Academic literature on the topic 'Clamping jaw'

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Journal articles on the topic "Clamping jaw"

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Oravcova, Jarmila. "The Methodical Procedure for Designing of Clamping Jaws." Applied Mechanics and Materials 693 (December 2014): 44–49. http://dx.doi.org/10.4028/www.scientific.net/amm.693.44.

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The paper deals with the clamping fixture jaws procedure design. The clamping jaw design methodology developed summarizes complex factors. These factors affect the clamping jaws design for the workpiece. Methodical design procedure consists of three stages. Namely, there are input date summary, clamping fixture design and the last design verification. The ANSYS simulation was used for the verification developing methodology. The components model simulation aim has been studied impact of clamping force position change to the cutting force reactions change. Research was conducted with different positions of jaws.
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Ding, Wen Hua, Hua Deng, Yi Zhang, and Yao Qing Ren. "Optimum Design of the Jaw Clamping Mechanism of Forging Manipulators Based on Force Transmissibility." Applied Mechanics and Materials 157-158 (February 2012): 737–42. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.737.

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In this paper, the jaw clamping mechanism of a forging manipulator is regarded as a slider-crank mechanism. First, the force Jacobian matrix of the mechanism is obtained according to the dual relationship of velocity Jacobian matrix and force Jacobian matrix. Then, the performance atlases of the global force transmission index and the input space index that represents the motion range of the jaw are drawn with different inputs for the mechanisms of the nondimensional parameters. Furthermore, we research the effect of these structure parameters of the mechanism on the gripping force transmission and input space, and find an optimal range in the force transmission atlas. Finally, we synthesize a detail optimal flowchart of the jaw clamping mechanism of forging manipulators based on force transmissibility. A jaw clamping mechanism of a forging manipulator is studied as an example, and results show that the method presented in this paper is effective for finding an optimal gripper mechanism. The research in this paper can be served as fundamentals of design and optimization of the jaw clamping mechanism of forging manipulators.
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Görög, Augustín, and Ingrid Görögová. "Research of the Influence of Clamping Forces on the Roundness Deviations of the Pipes Turned Surface." Research Papers Faculty of Materials Science and Technology Slovak University of Technology 26, no. 42 (June 1, 2018): 47–54. http://dx.doi.org/10.2478/rput-2018-0005.

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Abstract In practice, pipe products are often produced. The surfaces of these components are often turned. The three-jaw chuck is often used to clamp the components for turning. It is a universal clamping fixture. The main advantage of three-jaw chuck is its high flexibility. However, its disadvantage is the inappropriate influence of the clamping forces on the geometrical accuracy of the produced components. This article deals with research of the influence of clamping forces on the roundness of turned pipes. A universal three-jaw chuck was used. The chuck was tightened using a torque wrench. The applied tighten torques were determined by monitoring the commonly used torques for a manually tightened chuck. The article presents the results of experimental research.
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Rezvani, Sina, Chang-Ju Kim, Simon S. Park, and Jihyun Lee. "Simultaneous Clamping and Cutting Force Measurements with Built-In Sensors." Sensors 20, no. 13 (July 3, 2020): 3736. http://dx.doi.org/10.3390/s20133736.

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The intensity of the clamping force during milling operations is very important, because an excessive clamping force can distort the workpiece, while inadequate clamping causes slippage of the workpiece. Since the overall clamping force can be affected by the cutting forces throughout machining, it is necessary to monitor the change of clamping and the cutting forces during the process. This paper proposes a hybrid system in the form of a vise with built-in strain gauges and in-house-developed piezoelectric sensors for simultaneous measurement of clamping and cutting forces. Lead zirconate titanate (PZT) sensors are fabricated and embedded in a layered jaw to measure the dynamic forces of the machine tool. A cross-shaped groove within the jaw is designed to embed strain gauges, which predominantly measure the static clamping forces. Sensor fusion technology combining the signals of the strain gauges and PZT piezoelectric sensors is used to investigate the interactions between cutting forces and clamping forces. The results show average errors of 11%, 17%, and 6% for milling forces in X, Y, and Z directions, respectively; and 19% error for clamping forces, confirming the capability of the setup to monitor the forces in milling.
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Han, Geun Jo, Seong Wook Lee, and Dong Seop Han. "A Study on the Relationship between Clamping Angle of a Locker and Initial Clamping Force in the Wedge Type Rail Clamp for a Container Crane." Key Engineering Materials 326-328 (December 2006): 1649–52. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1649.

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The rail clamp is the device to prevent that a container crane slips along rails due to the wind blast as well as to locate the crane in the set position through loading and unloading containers on a vessel in the quay. In order to design the rail clamp, we need to determine the proper wedge angle to minimize the sliding distance of a roller and the proper clamping angle of a locker to generate the initial clamping force of a jaw pad. The researches for the proper wedge angle have conducted. So in this study we look into the relationship between the clamping angle of a locker and the initial clamping force in the rail clamp with wedge angle of 10. The initial clamping force of the jaw pad was determined by the clamping angle of the locker. Therefore after we measured the locking force of a locker and the tensile stress of extension bar with respect to the clamping angle of a locker, such as 2.18, 3.05, 3.92, 4.80, we compared the results with the FEA results.
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Symons, Digby D., Jialiang Chen, and Padraig Alton. "Calculation of optimal jaw geometry for an electronic bond pull test." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 11 (November 13, 2013): 1847–58. http://dx.doi.org/10.1177/0954406213511963.

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A bond pull test is used to determine the strength of the bond of an electronic interconnect to a circuit board. A standard test consists of clamping and pulling the interconnect with a pair of microscopic jaws. In a successful test, the maximum pulling force registered by the jaws will be the failure load of the interconnect to circuit board bond. However, if the interconnect itself deforms before the bond has failed, then this would constitute an unsuccessful test. This paper reports on a theoretical analysis of the optimal geometry for gripping of a cylindrical interconnect. Upper and lower-bound plasticity models have been used to determine the jaw proportions that will maximize the load for the deformation of the interconnect and that should, therefore, be most likely to allow successful measurement of the bond strength. This theoretical analysis is compared to 2D and 3D non-linear finite element calculations. The 2D finite element models are axi-symmetric approximations of a pull test on a cylindrical interconnect. 3D finite element models take into account the actual jaw geometry and allow simulation of both clamping and pulling stages. The maximum calculated pull forces for both 2D and 3D simulations are in good agreement with the plasticity theory. Preliminary validation of the theory and finite element results has been accomplished through experimental clamping and pulling tests on cylindrical metal rods.
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Rothaupt, B., and J. Fleischer. "Sensorische Spannbacke für die Drehbearbeitung*/Sensory clamping jaw for turning operations. Topology optimization as an enabler for clamping force measurement with integrated evaluation electronics." wt Werkstattstechnik online 109, no. 07-08 (2019): 594–97. http://dx.doi.org/10.37544/1436-4980-2019-07-08-84.

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Für ein sicheres und deformationsarmes Spannen dünnwandiger Bauteile in der Drehbearbeitung existiert keine Lösung, welche Kraftmessung, Datenübertragung und Energieversorgung in eine Spannbacke unter Berücksichtigung der Nachrüstbarkeit im industriellen Umfeld integriert. Im Beitrag wird der Forschungsdemonstrator einer topologieoptimierten Monoblock-Spannbacke vorgestellt, welche eine werkstücknahe Spannkraftmessung mit integrierter Energieversorgung und Datenübertragung ermöglicht.   For a safe but low deforming clamping of thin walled parts in turning processes there is no solution integrating all force measurement, data transmission and energy supply in a jaw applicable in an industrial environment. In this paper, a new approach with a topology optimized monobloc clamping jaw is presented, enabling a clamping force measurement near the work piece.
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Bučányová, Marcela, Erika Hrušková, and Martina Kusá. "Design of shape and dimensions of exchangeable jaws for pneumatics chuck of CNC lathe EMCO Concept TURN 105." MATEC Web of Conferences 299 (2019): 03010. http://dx.doi.org/10.1051/matecconf/201929903010.

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The EMCO Concept Turn 105 CNC lathe is part of the iCIM3000 production system. Currently, only a narrow range of products is processed, which is caused by the small clamping range of the 3-jaw pneumatic chuck marked KFD 85/3. Based on the requirement to expand or change the range of manufactured components, new interchangeable jaws will be designed to clamp more diameters despite a small clamping range. The design of the replaceable jaws for the pneumatic chuck is based on the determination of the shapes and dimensions of the components produced on the lathe, as well as on the shape, dimensions and characteristics of the pneumatic chuck.
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Feng, Ping Fa, Ding Wen Yu, Zhi Jun Wu, and E. Uhlmann. "Clamping Behaviour of Modern Jaw-Chuck with Centrifugal Force Compensation during High Speed Turning." Key Engineering Materials 375-376 (March 2008): 636–42. http://dx.doi.org/10.4028/www.scientific.net/kem.375-376.636.

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In order to meet the requirements of high speed turning, modern power operated jaw-chucks with centrifugal force compensation (CFC) were developed by some chuck producers. Based on the force and deformation analysis of the clamping system, a new analytic computation model of dynamic clamping force for modern chuck with CFC was developed, and verified by means of experimental investigations. The clamping behaviours during high speed turning, such as the loss of dynamic clamping force, centrifugal force compensation efficiency and clamping force hysteresis are investigated. Some problems of design and application of modern chuck with CFC are discussed. The study results provide reliable theoretic and technical supports to reasonably utilize the potential of modern chucks at higher rotational speed and guarantee a safe high speed turning process.
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Fonger, James D., Xi Ming Yang, Richard A. Cohen, Christian C. Haudenschild, and Richard J. Shemin. "Human mammary artery endothelial sparing with fibrous jaw clamping." Annals of Thoracic Surgery 60, no. 3 (September 1995): 551–55. http://dx.doi.org/10.1016/0003-4975(95)00448-t.

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Dissertations / Theses on the topic "Clamping jaw"

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Horák, Jiří. "Návrh manipulačního stolu pro otáčení obrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229147.

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This master’s thesis deals with the design of the manipulator for rotating objects, especially workpieces, semifinished products, or complete products around horizontal axis. It’s the manipulator for objects where is needed change orientation during production process. This thesis describes step by step construction of individual components of the manipulator and calculations of propulsive units. At the beginning the conveyor roller with propulsive unit is designed. The next step is construction of scissor lift table and choice of the propulsive unit. There is also made FEM analysis for the scissor mechanism. The next unit is aimed to the construction and computation of rotating and telescopic jaw. Then hydraulic circuit with computation of the propulsive unit is designed. As the final step the appropriate type of sensors are chosen and the step diagram of the manipulator is made. The manipulator is designed in the 3D model program and there are also made some assembly drawings.
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Macháček, Kamil. "Konstrukční návrh přípravků pro změnu výrobního postupu tlakových zásobníků Common Rail." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230221.

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Práce se zabývá změnou výrobního procesu výroby tlakového zásobnku system Common Rail. Předmětem práce je take návrh a úprava upínacího přípravku pro výrobu kovaných tlakových zásobníků pro obráběcí centra ELHA.
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Mahel, Petr. "Bezpečnost zařízení pro upínání obrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382113.

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Master’s thesis is dealing with safety of workpiece clamping device. In the first part we are describing possibilities of clamping workpiece on different machines, legislative conditions in EU and CR in engineering devices, and general demands that refer to harmonized standards for different types of clamping devices. The main target of the thesis are the lists of requirements for hydraulic three-jaw chucks and proposal of two chosen safety applications. The first safety application refers to safety of clamping workpiece in hydraulic chuck. The second safety application is aimed at clamping of workpiece with the help of strap clamps. There is a description of the procedure of calculation of safe tightening moment during assembly of the nut.
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Beran, Pavel. "Modifikace upínací části zkušebního zařízení RUMUL Cracktronic 160." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227910.

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This diploma thesis deals with the structural design of the chucking jaws for RUMUL Cracktronic 160 testing machine. This apparatus is used in the fatigue laboratory of Institute of Machine Design FME BUT. Simplification, speed improvement and better test sample griping are expected gains of the new clamping system. Solidworks system is used to create 3D model of the jaws. Stress analysis is created by Finite element method in ANSYS Workbench software.
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LIN, SHIH-WEI, and 林仕維. "Combination of Three-joint Clamping jaw and Force Sensing to Intelligent Object Picking." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/20123468606713369076.

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碩士
南臺科技大學
電機工程系
105
The application of the robotic arm is mainly performed in a fixed repetitive procedure or a high-risk job. In recent years, combined with the sensor mechanical arm gradually been developed to suit the rapidly changing work items .This research uses three-joint mechanical clamping jaw with image processing to use grab and release action to the specific target. The grab power is defined as the power which proceeds with an action through the feedback method, and get to target the specific object by clamping hands which has been equipped with the small video camera. It could gauge entity size in accordance with image retrieval, analyzing the object color, a mechanical arm mounted six-axis force and torque sensor test moment grasping the object.
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Book chapters on the topic "Clamping jaw"

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Spur, Günter, and Udo Bahrke. "Flexible clamping jaws for circular sections." In Advancement of Intelligent Production, 277–82. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-444-81901-7.50060-8.

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Conference papers on the topic "Clamping jaw"

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Engelmann, Max, Adrian Albero Rojas, Joachim Regel, and Matthias Putz. "Investigation of the Standstill Clamping Force During Milling with Three-Jaw Chuck." In Proceedings of the 29th European Safety and Reliability Conference (ESREL). Singapore: Research Publishing Services, 2020. http://dx.doi.org/10.3850/978-981-14-8593-0_5705-cd.

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Jou, Rong-Yuan, and Tseng-Wei Li. "Deep Learning Automatic Inspections of Mushroom Substrate Packaging for PP-Bag Cultivations." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97011.

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Abstract The mushroom cultivation is an important smart agriculture in Taiwan. This study uses the deep learning object detection method to inspect the cap flaws or positional imperfection in the automatic production of the mushroom PP-bag packaging. This study uses the UR robotic arm and integrated 3D vision module, and uses the extra positioning axis to achieve the purpose of multi-positioning inspections by robot arm. Projecting the structured LED light sources to the object to be inspected has the advantages of a larger identification ranges and complex objects detection. A duallens CMOS industrial camera is used to capture images, and a 3D point cloud image of a basket of PP-bag packages is created by software calculation, which can obtain detailed information on the appearance of the whole basket of PP-bag packages. Deep learning is performed by the training set with labelling, and the image recognition such as the cap flaws in the PP-bag package or positional shift is performed after the training is completed. In this paper, the image data is divided into four sets of datasets, and the same training parameters are used for individual training. With images of dataset1 and the ambient illumination level of 200 lm to 800 lm, the matching score is up to 0.989. The clamping force and the opening degree are adjusted by the variable jaws. The clamping force of the jaws is maintained at 20 N to prevent the clamping force from damaging the dimensions of the PP-bag package and existing holes inside it, making the product unusable. Using the variable jaws and repeating 30 times of clamping experiments, the hole diameter inside the PP-bag package can still be maintained within around 25 mm, which can meet the needs of the mushroom PP-bag packaging.
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Byun, Jeongmin, and C. R. Liu. "Selection of Major Locating Surface for Improving Chucking Accuracy." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84315.

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Two different types of surfaces are available as a major locating surface for the chucking of a cylindrical workpiece in turning operation — a flat surface and a cylindrical surface. No systematic study on the selection of a major locating surface has been reported while an appropriate selection considering the geometry of jaws and workpieces results in the significant improvement in the positioning accuracy and repeatability of a range of chucked workpieces. This research covers the most common clamping situation where a cylindrical workpiece is overhung clamped and machined with more than one set-up for finishing. In general, a workpiece with a lower length to diameter ratio should be clamped using an end face as a major locator while using a cylindrical surface can produce better positioning accuracy and repeatability for workpieces with higher length to diameter ratio. Recent studies have demonstrated the benefits of hard turning over abrasive machining processes in terms of surface integrity. A strong need currently exists for improving chucking accuracy since it work a major bottleneck in the implement finish hard turning for the production of precision, load-carrying mechanical components, such as bearings and shafts. This paper presents part of a systematic study on improving chucking accuracy for the implementation of finish hard turning, focusing on the development of criteria on the selection of a major locating surface. First, an analysis on the factors affecting the positioning accuracy for each locating surface is carried out. Then the criteria and guidelines for the selection of a major locating surface were constructed. Finally, systematic experiments were carried out to test the criteria and guidelines. The results showed that the positioning accuracy of the chucked workpieces improved significantly when following the guidelines developed in this study.
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Etheridge, Michael, Harishankar Natesan, Radek Lopusnik, and Adam Cates. "Development and Validation of Numerical Model Simulation for RF Ablation Using the Isolator Synergy Clamp." In 2018 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dmd2018-6949.

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Thermal ablation is rapidly becoming a standard of care for the treatment of atrial fibrillation (AF), a cardiac disorder characterized by irregular heart rhythm and estimated to impact more than 33 million people worldwide [1]. AtriCure is a company that specializes in epicardial ablation for AF and here we describe the development of a numerical model to study the performance of the Isolator® Synergy™ Clamp bipolar radiofrequency (RF) device. The clamp device features two jaws with embedded electrode pairs, which are used to secure the tissue by clamping across the left atrium (as shown in Figure 1). Energy is applied between the bipolar electrodes at approximately 460 kHz through an impedance-based control algorithm and is additionally duty-cycled between the pairs to further distribute the heating. Patient anatomies vary greatly and measured impedance will depend on atrial wall thickness, epicardial fat, electrode-tissue engagement, and structural variations. Further, tissue conductivity (inversely related to impedance) increases as the tissue is heated, leading to a complicated process, where the heat generation depends on the impedance, which in turn is a strong function of temperature. Energy delivery continues until a phase change in the tissue’s water content occurs, producing a sharp increase in impedance and termination of the ablation. Therefore, since tissue impedance and heating drive the device’s performance, a majority of the effort described here focuses on the validation work done to ensure the model is based on an accurate description of the tissue properties and response. While previous modeling of RF ablation often does include temperature-dependence of tissue properties, the referenced values vary notably and rarely include direct validation of modeling results to benchtop data. Variations in anatomy and fat content can dramatically impact the energy delivery and patient-to-patient treatment efficacy, so an accurate description of the tissue response is critical to understanding the limitations of current energy delivery algorithms and provides an invaluable tool in designing more efficacious ablation devices and algorithms.
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