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Journal articles on the topic 'Control fixture'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Lee, Jinkoo, S. Jack Hu, and Allen C. Ward. "Workspace Synthesis for Flexible Fixturing of Stampings." Journal of Manufacturing Science and Engineering 121, no. 3 (1999): 478–84. http://dx.doi.org/10.1115/1.2832706.

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Fixtures are used to position and hold parts for a series of assembly operations. In automotive body assembly, these fixtures conventionally have been dedicated, therefore they must be replaced whenever there are model changes in an auto body assembly plant. In recent years, however, the automotive industry has been changing from high volume to small-to-medium volume production per model with an increasing number of models because customer tastes are diversifying. To cope with this change, auto companies need to be capable of producing a variety of models in small-to-medium volume, and they re

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2

Rong, Yiming (Kevin), and Yong Bai. "Automated Generation of Fixture Configuration Design." Journal of Manufacturing Science and Engineering 119, no. 2 (1997): 208–19. http://dx.doi.org/10.1115/1.2831097.

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Flexible fixturing is a necessary aspect of Flexible Manufacturing Systems (FMS) and Computer-Integrated Manufacturing Systems (CIMS). Modular fixtures are most widely used in industry for job and batch production. Computer-Aided Fixture Design (CAFD) has become a research focus in implementing FMS and CIMS. Fixture configuration design is an important issue in the domain of CAFD. A review of the current research in CAFD indicates that a major problem impeding the automated generation of fixture configurations is the lack of studies on fixture structures. This paper investigates fundamental st

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3

Semjon, Ján, Mikuláš Hajduk, Rudolf Jánoš, and Marek Vagaš. "Modular Welding Fixtures for Robotic Cells." Applied Mechanics and Materials 309 (February 2013): 80–87. http://dx.doi.org/10.4028/www.scientific.net/amm.309.80.

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This paper describes the proposal of welding fixtures which achieves pre-arrangement of individual parts of fixture based on suitable modules. Also is focused on methodological process of their design using modularity principle and reconfigurability. Describe procedure of designing fixture with emphasis to specific requirements for welding fixtures in robotic welding. Take advantages of simple substitution of individual modules welding fixtures by database compatible with modules in 3D environment. Optimization and control of collision status is realized in simulation environment ABB Robot Stu

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4

He, Yucheng, Ying Hu, Peng Zhang, Baoliang Zhao, Xiaozhi Qi, and Jianwei Zhang. "Human–Robot Cooperative Control Based on Virtual Fixture in Robot-Assisted Endoscopic Sinus Surgery." Applied Sciences 9, no. 8 (2019): 1659. http://dx.doi.org/10.3390/app9081659.

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In endoscopic sinus surgery, the robot assists the surgeon in holding the endoscope and acts as the surgeon’s third hand, which helps to reduce the surgeon’s operating burden and improve the quality of the operation. This paper proposes a human–robot cooperative control method based on virtual fixture to realize accurate and safe human–robot interaction in endoscopic sinus surgery. Firstly, through endoscopic trajectory analysis, the endoscopic motion constraint requirements of different surgical stages are obtained, and three typical virtual fixtures suitable for endoscopic sinus surgery are

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5

Chitariu, Dragoş-Florin, and Adriana Munteanu. "Research on 3D printed fixture components." MATEC Web of Conferences 178 (2018): 02008. http://dx.doi.org/10.1051/matecconf/201817802008.

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Fixtures are used for orientation, positioning and tightening of the workpiece during machining, control and assembly. The main fixture requirements are: orientation, positioning and tightening precision in accordance with the machining requirements. The materials used for fixture components, especially, supports and clamping mechanism are, usually, alloy steel with HRC hardness up to 55-60 HRC. These components are machined to high level of precision thus assuring the overall precision of the fixture. In order to achieve high stiffness and a good dampening capacity the fixture become, usually

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6

Kasie, Fentahun Moges, and Glen Bright. "Integrating fuzzy case-based reasoning and discrete-event simulation to develop a decision support system for part-fixture assignment and fixture flow control." Journal of Modelling in Management 14, no. 2 (2019): 312–38. http://dx.doi.org/10.1108/jm2-07-2018-0096.

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Purpose This study aims to propose a decision support system (DSS) that performs a decision-based part-fixture assignment and fixture flow control in planned production periods. Design/methodology/approach The principal approaches were fuzzy case-based reasoning (FCBR) and discrete-event simulation (DES). Besides, the fuzzy analytic hierarchy process (FAHP), an object-oriented (OO) method and a fuzzy weighted Euclidean distance were used to support the decision-making process. Findings It shows that integrating FCBR and DES systems is a promising approach to address part-fixture planning probl

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7

Zhao, Xuesen, Rongkai Tan, Zhe Wang, Xicong Zou, Zhenjiang Hu, and Tao Sun. "The Design and Implementation of a High-Precision Positioner Fixture." Micromachines 12, no. 10 (2021): 1227. http://dx.doi.org/10.3390/mi12101227.

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In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are analyzed. The allowable tolerance values of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-t

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8

MÖHRING, H. Christian, Werner GESSLER, Alexander KÖNIG, Le Trung NGUYEN, and Q. Phuc NGUYEN. "Modular intelligent fixture system for flexible clamping of large parts." Journal of Machine Engineering 4, no. 17 (2017): 29–39. http://dx.doi.org/10.5604/01.3001.0010.7003.

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In this work a modular intelligent fixture system for flexible clamping of large parts is presented. The fixture modules consist of a hybrid material structure involving metal frame elements and mineral casting. These modules can be combined and connected to realize fixtures adapted to the geometry of the workpiece and requirements of the machining processes. By integrated pipes and interfaces, an internal hydraulic supply and active cooling is possible even for combined modules. Temperature and acceleration sensors allow for an active thermal control and process monitoring. The modules and fi

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9

Vidoni, M., S. Sarkar, H. Farivar, J. Sims, M. Jordan, and D. Münter. "Simulation of Fixture Hardening for Tool and Process Design Optimization." HTM Journal of Heat Treatment and Materials 76, no. 5 (2021): 356–69. http://dx.doi.org/10.1515/htm-2021-0013.

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Abstract Fixture hardening is the process of choice when thin-walled, carburized gears need to be heat treated with minimal distortion. Only a few publications have studied and described the phenomena taking place in carburized gears during a fixture hardening process. An integrated approach is proposed to improve the design of hardening fixtures and introduce new strategies and instrumentation to better understand and control the process. The proposed approach is to tightly integrate the knowledge in metallurgy, numerical simulation, process control, and machine design areas to mutually compe

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10

Abbott, Jake J., and Allison M. Okamura. "Stable Forbidden-Region Virtual Fixtures for Bilateral Telemanipulation." Journal of Dynamic Systems, Measurement, and Control 128, no. 1 (2005): 53–64. http://dx.doi.org/10.1115/1.2168163.

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There has been recent interest in novel human-machine collaborative control laws, called “virtual fixtures,” which provide operator assistance for telemanipulation tasks. A forbidden-region virtual fixture is a constraint, implemented in software, that seeks to prevent the slave manipulator of a master/slave telemanipulation system from entering into a forbidden region of the workspace. In this paper, we consider the problem of unstable vibrations of the slave and/or master against forbidden-region virtual fixtures for a general class of telemanipulator control architectures, including those w

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11

Wang, Michael Yu, Tong Liu, and Diana M. Pelinescu. "Fixture Kinematic Analysis Based on the Full Contact Model of Rigid Bodies." Journal of Manufacturing Science and Engineering 125, no. 2 (2003): 316–24. http://dx.doi.org/10.1115/1.1557293.

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The conventional point-kinematic model of fixtures has only treated point geometry of the contacts between locators and workpiece. However, this model, which ignores the underlying surface properties of the locators-plus-workpiece system, is inherently incapable of capturing the effects of the geometric properties important to accurate positioning of the workpiece. In this paper, we present a fixture kinematic analysis based on the full kinematics of locator-workpiece contact. This model incorporates a “virtual” kinematic chain with meshing parameters of contact kinematics in a velocity formul

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12

Zhong, Weiping, and S. Jack Hu. "Modeling Machining Geometric Variation in a N-2-1 Fixturing Scheme." Journal of Manufacturing Science and Engineering 128, no. 1 (2005): 213–19. http://dx.doi.org/10.1115/1.2114927.

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Fixtures are used to locate and constrain workpieces in machining. Fixture properties, such as accuracy and locator layout schemes, directly affect the resultant geometric variation on the machined workpiece surfaces. N-2-1 fixturing schemes (N>3) are often used for large or compliant workpieces in machining. However, the impact of N-2-1 fixturing on product geometric variation is not well understood because of the uncertainty of contact under the overconstraint condition. This paper presents a modeling methodology to study the machining geometric variation in a 4-2-1 fixturing scheme. The

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13

Bond, Arthur, Brent Bottenfield, Mark L. Adams, and Robert N. Dean. "The Advantages of using 3D Printed MEMS Devices." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2019, DPC (2019): 001050–63. http://dx.doi.org/10.4071/2380-4491-2019-dpc-presentation_wp3_023.

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The purpose of this study will be to discuss the potential benefits of 3D printed components when used in MEMS testing applications. The serving example for this study will be a critical component that is used in a transmissibility test of a mechanical isolator when subjected to a range of frequencies. The critical component is called a fixture. The fixture is the interface between the isolator and the shaker. The fixture is what allows the shaker to transmit mechanical vibrations to the isolator. It will also serve as a reference point for the laser vibrometer that will be a used in the test.

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14

Scafati, Simone, Enza Pellegrino, Francesco de Paulis, Carlo Olivieri, James Drewniak, and Antonio Orlandi. "Single Step 2-Port Device De-Embedding Algorithm for Fixture-DUT-Fixture Network Assembly." Electronics 10, no. 11 (2021): 1275. http://dx.doi.org/10.3390/electronics10111275.

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The de-embedding of measurement fixtures is relevant for an accurate experimental characterization of radio frequency and digital electronic devices. The standard technique consists in removing the effects of the measurement fixtures by the calculation of the transfer scattering parameters (T-parameters) from the available measured (or simulated) global scattering parameters (S-parameters). The standard de-embedding is achieved by a multiple steps process, involving the S-to-T and subsequent T-to-S parameter conversion. In a typical measurement setup, two fixtures are usually placed before and

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15

Kampker, A. Prof, K. Kreisköther, J. Wagner, and R. Förstmann. "Automatisierung der Betriebsmittelgestaltung*/Automation of production equipment design - Additively manufactured elements and a construction kit approach as enabler for automated design processes." wt Werkstattstechnik online 107, no. 04 (2017): 247–52. http://dx.doi.org/10.37544/1436-4980-2017-04-51.

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Kurze Produktlebenszyklen und damit notwendigerweise beschleunigte Produktentstehungsprozesse erzeugen auch auf die Betriebsmittelplanung erheblichen Zeitdruck. Das in diesem Artikel präsentierte Konzept „Rapid Fixture“ zielt darauf ab, die Bereitstellung von Betriebsmitteln – beispielsweise Montagevorrichtungen – durch automatisierte Gestaltungsprozesse zu beschleunigen. Als grundlegende Befähiger dienen dafür additiv hergestellte Elemente, ein Baukastensystem und ein Steckprinzip. &nbsp; Short product life cycles lead to accelerated product development processes and also put pressure on

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16

Minetola, Paolo, and Luca Iuliano. "The reverse guillotine tribometer for evaluation of sliding wear of additive manufactured fixtures." Rapid Prototyping Journal 20, no. 2 (2014): 105–14. http://dx.doi.org/10.1108/rpj-06-2012-0051.

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Purpose – The purpose of this paper is to present a custom-built tribometer that mimics the wear of additive manufactured fixtures used in inspection of sheet metal components. Design/methodology/approach – Referring to the inspection of sheet metal parts, the fixture undergoes sliding wear during loading and unloading phases of the quality control operation. A new wear test is proposed to mimic the actual wearing conditions of the fixtures because the standards are deemed insufficient. In the tribometer, a cylindrical Alumide cantilever beam is made to slide back and forth inside a slightly b

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17

Shen, Xing Dong. "The Study on Accuracy Control System with the Three Datum Planes in Fixture Design." Applied Mechanics and Materials 602-605 (August 2014): 1027–30. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.1027.

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The fixture accuracy is controlled on the three datum planes with fixture or compound body used as design object, with structure of parts and the machine accuracy used as the target required, with cutting tool and the machine datum plane mounted fixture used as viewed body. The assistance datum plane is towards the machine locating planes mounted fixture, and it is parallel to the cutting speed of tools; the assistance datum plane (or line) is perpendicular to the assistance datum plane, and it is passing through center line of tool (or fixture);the assistance datum plane is through the single

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18

Ivanov, Vitalii, František Botko, Ivan Dehtiarov, et al. "Development of Flexible Fixtures with Incomplete Locating: Connecting Rods Machining Case Study." Machines 10, no. 7 (2022): 493. http://dx.doi.org/10.3390/machines10070493.

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The rapid development of manufacturing in recent years has led to a significant expansion of the technological capabilities of modern metal-cutting equipment. Therefore, the modern approach to intensifying production requires an advanced fixture design. Design and manufacture of flexible fixtures capable of machining similar shapes and sizes of complex geometry parts reduce setup time. The article aims to design flexible fixtures for parts such as one-piece connecting rods under incomplete locating conditions. The advantages are the minimum number of parts and tool availability for multi-axis

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19

Zhang, Xutang, Gaoliang Peng, Xin Hou, and Ting Zhuang. "A knowledge reuse-based computer-aided fixture design framework." Assembly Automation 34, no. 2 (2014): 169–81. http://dx.doi.org/10.1108/aa-04-2013-033.

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Purpose – Fixture design is a complicated task requiring both intensive knowledge and experience. This paper aims to present a computer-aided fixture design (CAFD) system framework based on design reuse technology. Design/methodology/approach – Fixture design domain ontology is constructed by analyzing fixture design document corpus. A design reuse engine is proposed to realize fixture design knowledge retrieval and fixture model retrieval based on ontology and find fixture design cases similar to fixture design problem, and then use evolutionary methods to modify the retrieved model to meet t

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20

Huang, Wenzhen, Jijun Lin, Michelle Bezdecny, Zhenyu Kong, and Dariusz Ceglarek. "Stream-of-Variation Modeling—Part I: A Generic Three-Dimensional Variation Model for Rigid-Body Assembly in Single Station Assembly Processes." Journal of Manufacturing Science and Engineering 129, no. 4 (2007): 821–31. http://dx.doi.org/10.1115/1.2738117.

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A stream-of-variation analysis (SOVA) model for three-dimensional (3D) rigid-body assemblies in a single station is developed. Both product and process information, such as part and fixture locating errors, are integrated in the model. The model represents a linear relationship of the variations between key product characteristics and key control characteristics. The generic modeling procedure and framework are provided, which involve: (1) an assembly graph (AG) to represent the kinematical constraints among parts and fixtures, (2) an unified method to transform all constraints (mating interfa

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21

Kasie, Fentahun Moges, Glen Bright, and Anthony Walker. "An intelligent decision support system for on-demand fixture retrieval, adaptation and manufacture." Journal of Manufacturing Technology Management 28, no. 2 (2017): 189–211. http://dx.doi.org/10.1108/jmtm-08-2016-0116.

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Purpose The purpose of this paper is to propose a decision support system (DSS) that stabilizes the flow of fixtures in manufacturing systems. The proposed DSS assists decision-makers to reuse or adapt the available fixtures or to manufacture new fixtures depending upon the similarity between the past and new cases. It considers the cost effectiveness of the proposed decision when an adaptation decision is passed. Design/methodology/approach The research problem is addressed by integrating case-based reasoning, rule-based reasoning and fuzzy set theory. Cases are represented using an object-or

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22

Zhao, Kang, Hong Hua Su, Lin Jiang He, and Ying Zhi Liu. "Vibration Control of HSM of Thin-Wall Titanium Alloy Components Based on Finite Element Simulation." Materials Science Forum 836-837 (January 2016): 304–9. http://dx.doi.org/10.4028/www.scientific.net/msf.836-837.304.

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During high-speed machining, the vibration will result in poor workpiece surface and damage the cutting tool as well as the machine tool. It will limit the productivity and lower the quality of thin-wall titanium alloy components. Moreover, vibration occurrence is strongly affected by the dynamic response of the whole system, particularly the stiffness of workpiece-fixture system. Improper fixture layout is prone to generate vibration, especially for the flexible workpiece. Hence, it’s necessary to suppress the vibration and improve the fixture design. In this work, a finite element model of t

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23

Öhl, Christian, Marian Rus, Denis-Florin Mădroane, Iuliana Duma, Sergiu Valentin Galatanu, and Emanoil Linul. "The Influence of Thread Length and Tightening Torque of the M8/M12 Bolts on the Vibration Fixture Response." Advanced Engineering Forum 53 (December 16, 2024): 113–18. https://doi.org/10.4028/p-dhl3yh.

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The paper presents an experimental investigation of the influence of thread length and tightening torque of the M8 and M12 bolts on the vibration fixture response. To perform the tests electromagnetic vibration exciter with amplifier (LDS V8900), controller (M+P), single-axis control and measurement accelerometer (PCB), and calibrated dynamometric key (Hazet) were used. As vibration profile was used sinusoidal on a linear scale amplitude (g2) versus time (Hertz) according to the IEC 60068-2-6 standard. To investigate the length and diameter of the bolts aluminum 7075 T6 fixtures with dimension

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24

WANG, Zheng. "Design and Research of Intelligent Fixture for Drawing Machine." Frontiers of Chinese Mechanical Engineering and Technology 3, no. 2 (2024): 41–52. http://dx.doi.org/10.48014/fcmet.20231129001.

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Tensile machine is a very sophisticated test equipment, which can test the mechanical properties of some materials. In the drawing machine, the clamping device is to prevent the relative displacement and vibration phenomenon in the process of tensile test. The clamping device is the most important part of the structure of the test machine, and the main task of the clamping device is to control the degree of freedom of the specimen needs to be clamped, so as to further add loads to the various specimens to be held, and finally complete the mechanical property test of the material. But at presen

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25

Feng, Junping, Jiawei Wang, Zhuang Mu, et al. "Optimization Method of Floating Fixture Layout for Distortion Control of Low-Stiffness Thin-Walled Beams." Materials 17, no. 17 (2024): 4226. http://dx.doi.org/10.3390/ma17174226.

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The aim is to reduce the elastic deformation of the web and side walls of low-stiffness thin-walled beams when the floating fixture method is used. This paper takes the number and position of fixture points as the optimization variables, establishes a calculation model of elastic deformation, and constructs the objective function of maximum total elastic deformation. An optimized solution utilizing the augmented multiplier method is employed, which forms the basis for the fixture layout optimization method to reduce the elastic deformation of low-stiffness thin-walled beams. A theoretical calc

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26

Yacob, Filmon, Daniel Semere, and Nabil Anwer. "Variation propagation modeling in multistage machining processes considering form errors and N-2-1 fixture layouts." International Journal of Advanced Manufacturing Technology 116, no. 1-2 (2021): 507–22. http://dx.doi.org/10.1007/s00170-021-07195-z.

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AbstractVariation propagation modeling of multistage machining processes enables variation reduction by making an accurate prediction on the quality of a part. Part quality prediction through variation propagation models, such as stream of variation and Jacobian-Torsor models, often focus on a 3-2-1 fixture layout and do not consider form errors. This paper derives a mathematical model based on dual quaternion for part quality prediction given parts with form errors and fixtures with N-2-1 (N>3) layout. The method uses techniques of Skin Model Shapes and dual quaternions for a virtual assem

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Liu, J. J. X., and D. R. Strong. "Machining Fixture Verification for Nonlinear Fixture Systems." International Journal of Advanced Manufacturing Technology 21, no. 6 (2003): 426–37. http://dx.doi.org/10.1007/s001700300050.

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Park, Jun-Beom, Sung-Hoon Lee, NamRyang Kim, et al. "Instrumentation With Ultrasonic Scalers Facilitates Cleaning of the Sandblasted and Acid-Etched Titanium Implants." Journal of Oral Implantology 41, no. 4 (2015): 419–28. http://dx.doi.org/10.1563/aaid-joi-d-13-00078.

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Mechanical instrumentation is widely used to debride dental implants, but this may alter the surface properties of titanium, which in turn may influence bacterial adhesion and make it more difficult to remove the biofilm. This in vitro study was performed (1) to assess the amount of biofilm formation on a sand-blasted and acid-etched titanium fixture treated with ultrasonic scalers with metal, plastic, and carbon tips and (2) to evaluate how this treatment of titanium surfaces affects implant cleaning by brushing with dentifrice. The titanium fixtures were treated with various ultrasonic scale

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Shen, Xing Dong. "Application and Research on Fixture Accuracy Control with the Three Datum Planes." Applied Mechanics and Materials 602-605 (August 2014): 1031–33. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.1031.

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The application accuracy control system with the three datum planes in machining fixture accuracy design can be used to be integrity for the item, index sign reasonable, to be easily for the criterion design and be advantageous to the computer assistance fixture design.

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Townes, Maryanne. "Jigs and Fixtures: Design Review Guidelines for the Ergonomics Engineer." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 38, no. 15 (1994): 960. http://dx.doi.org/10.1177/154193129403801532.

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Traditionally, the ergonomics engineer has not played an active role in the design of jigs and fixtures used to manually assemble parts. This is problematic, since tool redesigns are often infeasible due to cost and production constraints. Therefore, less effective measures must be used to control ergonomic hazards, since the hazard(s) cannot be engineered out during the design process. References, guidelines and checklists used by many tool designers do not include ergonomic engineering principles and methods. In addition, many ergonomics engineers may not be schooled in the elements of jig a

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Nsengiyumva, Gabriel, and Yong-Rak Kim. "Effect of Testing Configuration in Semi-Circular Bending Fracture of Asphalt Mixtures: Experiments and Statistical Analyses." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 5 (2019): 320–28. http://dx.doi.org/10.1177/0361198119839343.

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The semi-circular bending (SCB) test is a simple, efficient, and easily applicable method in the pavement community to characterize fracture behavior. This makes it widely used as a quality control (QC) and quality assurance (QA) approach at several transportation agencies. However, public–private testing laboratories have implemented SCB test methods using different load-support fixture conditions with an insufficient understanding of how the conditions affect the results and testing variability. This could be particularly problematic when using SCB test results obtained from different load-s

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Kong, Zhenyu, Wenzhen Huang, and Dariusz Ceglarek. "Visibility Analysis for Assembly Fixture Calibration Using Screen Space Transformation." Journal of Manufacturing Science and Engineering 127, no. 3 (2004): 622–34. http://dx.doi.org/10.1115/1.1947209.

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In a number of manufacturing processes—tooling installation, calibration, and maintenance—guarantee the precision of fixtures and play important roles toward the overall quality of products. Recently, a new type of measurement equipment called a “laser tracker” was developed and utilized for assembly fixture calibration to shorten calibration time and improve the accuracy of the currently used theodolite systems. Though calibration of the assembly fixture is critical for product quality, as such, calibration time creates a significant burden for productivity of multistation assembly processes.

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Zhao, Can, Dan Dan Liu, and C. R. Tang. "Flexible Fixture Based on Magneto-Rheological Fluid." Key Engineering Materials 392-394 (October 2008): 518–22. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.518.

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This paper brings forward a flexible fixture system based on magneto-rheological fluid. It is a holding and positioning device that has flexible surface of change rigidity by using current and magneto-rheological fluid valve to control variety of rigidity. It can adapt all kinds of rigidity and shape holding objects, the stress is adapted to object surface of any shape. Flexible fixture based on magneto-rheological fluid has simple structure and faster execution action and lower cost relative to pure mechanical control system. The simulation results are shown that the fixture system has better

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Shi, Yao, Yu He, Jun Zha, Bohao Chen, Chaoyu Shi, and Ming Wu. "Design and Manufacture of a Flexible Adaptive Fixture for Precision Grinding of Thin-Walled Bearing Rings." Journal of Manufacturing and Materials Processing 9, no. 5 (2025): 139. https://doi.org/10.3390/jmmp9050139.

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Addressing the issues of easy deformation and difficult-to-control machining accuracy of thin-walled bearing rings during precision grinding due to clamping forces, existing research mainly employs methods such as elastic clamping, hydraulic control, pneumatic control, and vacuum adsorption to tackle the clamping problem. However, these methods still suffer from problems such as uneven clamping force, insufficient adaptability, and limited machining accuracy. In this paper, a novel fixture suitable for precision grinding of thin-walled bearing rings is designed. By analyzing the working princi

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35

Raghu, Anand, and Shreyes N. Melkote. "Modeling of Workpiece Location Error Due to Fixture Geometric Error and Fixture-Workpiece Compliance." Journal of Manufacturing Science and Engineering 127, no. 1 (2005): 75–83. http://dx.doi.org/10.1115/1.1828052.

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Several fixture-related error sources contribute to workpiece location error in a machining system. Inaccurate part placement in the fixture relative to the cutting tool, for example, can negatively affect the quality of the part. In this paper, the following major sources of error are considered: fixture geometric error and elastic deformation of the fixture and workpiece due to fixturing forces. The workpiece location error is predicted by modeling the process of part loading (given fixture geometric variations) and clamping (given deformations at the contact points) in a machining fixture.

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Xu, Shi Kun, Xin Gao, Tao Zhang, Han Xu Sun, and Qing Xuan Jia. "The Research of Robot Teleoperation Technology Based on Virtual Fixture." Applied Mechanics and Materials 571-572 (June 2014): 1097–101. http://dx.doi.org/10.4028/www.scientific.net/amm.571-572.1097.

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In robot teleoperation, safety and operational performance are two important indicators. This paper presents a way to use virtual fixture to assist robot teleoperation and studies the realization method of virtual fixture assisting teleoperation in trajectory tracking, motion navigation and obstacle avoidance. The simulation experimental results indicate that virtual fixture method improves security and control performance of teleoperation system.

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Nee, A. Y. C., A. Senthil Kumar, and Z. J. Tao. "An intelligent fixture with a dynamic clamping scheme." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 214, no. 3 (2000): 183–96. http://dx.doi.org/10.1243/0954405001517577.

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Both proper fixture design and optimum fixturing execution are crucial to workpiece quality assurance in manufacturing. This paper deals with an integrated approach to fixturing problems and, in particular, a ‘live’ fixture with sensory feedback and on-line fixturing control strategy to perform an optimal fixturing operation. The framework of an integrated fixture design procedure is first presented. The functions and structure of an intelligent fixture are proposed. The prototype intelligent fixture with dynamic clamps capable of delivering accurate but varying clamping intensity is developed

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Hunt, K. H. "Special configurations of robot-arms via screw theory." Robotica 5, no. 1 (1987): 17–22. http://dx.doi.org/10.1017/s0263574700009590.

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SUMMARYPart 1 of the paper* was concerned with the Jacobian of serial robot-arms and its matrix of cofactors; part 2 emphasizes the end-effector's velocity characteristics as affected at special configurations. The displacement about a ‘fixture-point’ is extended dually to a ‘fixture-plane’, and then to a ‘fixture-line’. These fixture-elements serve to highlight the prolixity of special configurations. Reciprocal screws lead to a complete survey of how the end-effector can ‘twist’ when one freedom is lost; extension to loss of more freedoms is explained. Then the fixture-elements are given ele

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Sallese, Lorenzo, Niccolò Grossi, Antonio Scippa, and Gianni Campatelli. "Numerical investigation of chatter suppression in milling using active fixtures in open-loop control." Journal of Vibration and Control 24, no. 9 (2016): 1757–73. http://dx.doi.org/10.1177/1077546316668686.

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Among the chatter suppression techniques in milling, active fixtures seem to be the most industrially oriented, mainly because these devices could be directly retrofittable to a variety of machine tools. The actual performances strongly depend on fixture design and the control logic employed. The usual approach in the literature, derived from general active vibration control applications, is based on the employment of adaptive closed-loop controls aimed at mitigating the amplitude of chatter frequencies with targeted counteracting vibrations. Whilst this approach has proven its effectiveness,

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Zhao, Lili, and Bo Qi. "Research on Temperature Field Characteristics of Lithium Battery Vacuum Drying Furnace." Advances in Engineering Technology Research 11, no. 1 (2024): 63. http://dx.doi.org/10.56028/aetr.11.1.63.2024.

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The temperature distribution of the vacuum contact drying oven fixture is a crucial factor that affects the moisture characteristics of the electric core. This paper presents a study on the temperature characteristics of the vacuum oven fixture, which combines theoretical analysis, numerical calculation, and experimental research. The results indicate that during the temperature rise process, the fixture temperature center intersects elliptically with the surrounding diffusion, while the temperature center of the insulation process is circular to the surrounding diffusion. Additionally, the te

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Zhao, Xuesen, Xiangwu Cui, Zhenjiang Hu, Qiang Zhang, and Tao Sun. "Development of an End-Toothed Disc-Based Quick-Change Fixture for Ultra-Precision Diamond Cutting." Machines 9, no. 11 (2021): 257. http://dx.doi.org/10.3390/machines9110257.

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With its standardized and unified interface, the quick-change fixture is an important part for maintaining high efficiency without compensation of precision in the metal-turning process because it can conveniently realize high-precision repeated clamping and multi-station conversion without complex positioning and adjustment steps. However, the existing quick-change fixture products and related research cannot fully meet the needs of repeatability and applicability raised from ultra-precision, single-point diamond turning with ultra-high accuracy and ultra-small depth of cut. In this paper, we

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Wattanutchariya, Wassanai, and Brian K. Paul. "Effect of Fixture Compliance on Thermally Enhanced Edge Registration in Microlamination." Journal of Manufacturing Science and Engineering 126, no. 4 (2004): 845–48. http://dx.doi.org/10.1115/1.1811112.

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Microlamination involves the patterning, registration, and bonding of thin layers of material, called laminae, to produce highly paralleled, spatially intensified microchannel systems for the bulk processing of mass and energy. A Thermally Enhanced Edge Registration (TEER) technique has been developed for precision aligning large numbers of laminae in diffusion-bonding processes based on the differential thermal expansion between the laminae and bonding fixture. However, fixture tolerances necessary to promote buckle-free TEER bonding have been found to be very small (below 10 μm). This resear

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DING, SHENGLAN, and XIULAN BAO. "A 3D PRINTING PRACTICE FOR PREOPERATIVE REHEARSAL BASED ON THE ADDITIVE AND SUBTRACTIVE MANUFACTURING." Journal of Mechanics in Medicine and Biology 16, no. 08 (2016): 1640031. http://dx.doi.org/10.1142/s0219519416400315.

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Preoperative rehearsal is very important before the operation, because of its particularity and difficulty, traditional printing can hardly achieve it, and thus a new kind of fixture for the 3D printing of pelvis model is critical. Fixture design in manufacturing system is very important and directly affects the processing quality, production efficiency and manufacturing costs. As a new method of manufacturing, the alternative style of additive and subtractive manufacturing is potential in market prospect. New requirements on the performance and structure of the fixture were put forward due to

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Li, Bin, Shi Rong Yin, Tian Hong Luo, and De Shan Li. "The Optimization of Grasping Ability for Three-Fingered Flexible Fixture." Advanced Materials Research 538-541 (June 2012): 2829–33. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2829.

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By means of analyzing the structure kinematic of the three-fingered flexible fixture, the optimization method of the grasping ability of the flexible fixture was proposed. The best configuration was attained on the basis of expressing the contact force as a general solution. And then, the grasping force was optimized by converting it into the optimization of grasping torque. Not only was the optimization of the grasping ability realized, but also the relative carrying capacity of the fixture was improved. The feasibility of the method was verified by calculating the example. This method provid

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Rouhani, Hossein, Alireza Fazlirad, Babak N. Araabi, and Caro Lucas. "Optimal design of a flexible transferring system in press automation using fuzzy clustering." Assembly Automation 25, no. 1 (2005): 53–58. http://dx.doi.org/10.1108/01445150510579003.

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PurposeModern day manufacturing has seen the replacement of manual transfer of parts between press machines with automatic transfer systems. Higher automation productivity demands greater flexibility of transfer devices. This paper deals with methods to improve the flexibility of fixtures designed to transfer parts between press machines.Design/methodology/approachDescribes methods to improve the flexibility of fixtures designed to transfer parts between press machines in Press Shop 3 at Iran Khodro Company (IKCO). A fuzzy C means clustering‐based method is developed to optimize the number and

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Li, B., and S. N. Melkote. "An Elastic Contact Model for the Prediction of Workpiece-Fixture Contact Forces in Clamping." Journal of Manufacturing Science and Engineering 121, no. 3 (1999): 485–93. http://dx.doi.org/10.1115/1.2832707.

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The design and evaluation of machining fixture performance requires accurate knowledge of workpiece-fixture contact forces since they strongly impact workpiece accuracy during clamping and machining. This paper presents an elastic contact model for the prediction of workpiece-fixture contact forces due to clamping. The fixture and workpiece are considered to be elastic bodies in the vicinity of the contact region. The model is formulated as a constrained quadratic program by applying the principle of minimum total complementary energy. The model predicts the normal force, and the magnitude and

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Zhang, Ke, Yan Ze Long, Jian Ping Chen, and Xiao Zheng Huang. "Error Analysis and Control of Standard Mast Section Used in Mast-Climbing Work Platform." Advanced Materials Research 314-316 (August 2011): 2552–55. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.2552.

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By controlling the integrated error of standard mast section, achieve requirement interchangeability for assembling.Through calculating and controlling the target of error, determined,so that provide the basis for determining the target value of manufacturing error controlling. And through special welding fixture and gauge and measuring instruments for controlling and detecting.By analyzing the qualitatively and quantitatively,applying the special welding fixture, so that the error of the manufacturing for the standard mast section is controllable.

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Willy, A., J. P. Sadler, and R. D. Schraft. "Automated fixture design." International Journal of Advanced Manufacturing Technology 10, no. 1 (1995): 27–35. http://dx.doi.org/10.1007/bf01184275.

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Komara, Asep Indra, Muhammad Fadhlan Afif, and Dedy Ariefijanto. "Perancangan dan Validasi Fixture Pemesinan Komponen Utama Produk Ragum Meja." JTERA (Jurnal Teknologi Rekayasa) 5, no. 1 (2020): 11. http://dx.doi.org/10.31544/jtera.v5.i1.2019.11-24.

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Ragum meja adalah salah satu produk Politeknik Manufaktur Bandung yang terdiri atas dua komponen utama yaitu rahang gerak dan rahang tetap. Pemesinan kedua komponen ini sebelumnya dilakukan menggunakan mesin konvensional dengan menggunakan beberapa fixture. Permasalahannya adalah kuantitas dan kualitas produk masih belum memenuhi harapan. Proses pemesinan diputuskan diganti menggunakan mesin Computer Numerical Control (CNC) sehingga memerlukan fixture baru. Penelitian ini bertujuan untuk merancang fixture pemesinan komponen utama produk ragum meja. Perancangan dilakukan menggunakan metode yang

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Zheng,, Y., Y. Rong, and, and Z. Hou. "A Finite Element Analysis For Stiffness of Fixture Units." Journal of Manufacturing Science and Engineering 127, no. 2 (2005): 429–32. http://dx.doi.org/10.1115/1.1871183.

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This paper presents a systematic finite element model to predict the fixture unit stiffness by introducing nonlinear contact elements on the contact surface between fixture components. The contact element includes three independent springs: two in tangential directions and one in the normal direction of the contact surface. Strong nonlinearity is caused by possible separation and sliding between two fixture components. The problem is formulated by the penalty function method and is solved by the Newton-Raphson procedure. The model was validated by two cases of analysis of a linear cantilever b

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