Relevant bibliographies by topics / Straightening machines

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Straightening machines'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Straightening machines"

1

Adil Kadyrov, Akbope Karsakov, Bakytzhan Donenbayev, and Kyrmyzy Balabekova. "Establishing the Strength Characteristics of the Lifting-Leveling Device Structures of the VPO-3-3000 Machines for the Track Straightening." Communications - Scientific letters of the University of Zilina 22, no. 4 (October 1, 2020): 70–79. http://dx.doi.org/10.26552/com.c.2020.4.70-79.

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This article deals with replacement of the magnetic grippers on the VPO-3-3000 machines with roller grippers. The novelty lies in establishment of dependences characterizing stress and strain in elements of the lifting and straightening devices and in rails during the operation. Reliability of the program for calculating the structural parameters of the lifting and straightening device for the VPO-3-3000 track renewal machine is shown. The developed design of the lifting and straightening device makes it possible to select the rational parameters of technology and the operating mode of the device. This design is recommended for use when developing working bodies for the straightening machines. The article presents calculation of the lifting and straightening device structural elements' strength during operation, in the Ansys WB software package.
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Kadyrov, A. S., V. V. Grachev, B. S. Donenbaev, and A. Zh Kаrsakova. "ESTABLISHMENT OF STRENGTH CHARACTERISTICS OF STRUCTURES OF THE LIFTING AND GRINDING DEVICE OF ROAD REPAIR MACHINES VPO-3-3000." Bulletin of the National Engineering Academy of the Republic of Kazakhstan 1, no. 79 (February 15, 2021): 22–31. http://dx.doi.org/10.47533/2020.1606-146x.57.

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The This article deals with the replacement of the magnetic grippers on the VPO-3-3000 machines with roller grippers. The novelty lies in the establishment of dependences characterizing stress and strain in the elements of the lifting and straightening devices and in the rails during the operation. Reliability of the program for calculating the structural parameters of the lifting and straightening device for the VPO-3-3000 track renewal machine is shown. The developed design of the lifting and straightening device makes it possible to select the rational parameters of the technology and the operating mode of the device. It This design is recommended to for use it when developing working bodies for the straightening machines. The article presents the calculation of the lifting and straightening device structural elements' strength during its operation, in the Ansys WB software package.
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Li, Jun, and Guo Liang Xiong. "Study on Calculation Method of Press Straightening Stroke Based on Straightening Process Model." Key Engineering Materials 340-341 (June 2007): 1345–50. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.1345.

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It is difficult to determine straightening stroke precisely for automatic straightening machines. The existing calculation method of straightening stroke is based on straightening curvature equation. Because the initial curvature is obtained by curve fitting method, the method is inconvenient to use and its accuracy is not well. In this paper, a method to calculate straightening stroke based on straightening process model is put forward. So the mathematic load-deflection model of straightening process must be established at first. The straightening process model for shafts is developed according to the elastic-plastic mechanics theory. By using the model, the straightening stroke can be calculated directly according to the initial deflection of the bent part. It is advantageous to use and to decrease errors. Comparing with FEM results and experimental results, the calculation results by the model are exact and the errors are small. So the validity and the accuracy of the method are verified. It will be helpful to the development of automatic straightening machines.
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Sevostyanov, Petr A. "STATISTICAL SIMULATION OF FIBRE STRAIGHTENING DYNAMICS IN CARDING ON ROLLER MACHINE." Technologies & Quality 51, no. 1 (April 29, 2021): 28–32. http://dx.doi.org/10.34216/2587-6147-2021-1-51-28-32.

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The article analyses the straightening of fibres in the working areas of roller carding machines. The initial assumptions and parameters are given, which were used to develop a computer model for statistical simulation of the process, taking into account the elastic-viscous properties of fibres and their interaction with neighbouring fibres, based on the methods of statistical dynamics. The dynamics of changes in the straightening of the fibres depending on their initial straightening and the number of passes of the fibres through the working zones are studied. It is established that the partial restoration of the tortuosity of the fibres due to their elasticity does not allow for their complete straightening, regardless of the number of repeated passes of the working areas of the machine.
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Chen, Min, X. M. Jiang, Zu Xin Zhao, and X. B. Huang. "A New Calculation System for Straightening Force." Materials Science Forum 628-629 (August 2009): 113–18. http://dx.doi.org/10.4028/www.scientific.net/msf.628-629.113.

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Based on the thorough analysis of the disadvantage of the traditional calculation system for straightening force, the new calculation system for straightening force is built according to the analysis of roller-shaped curve, flattening straightening and bend straightening with the application of mechanics of materials and bend beam theory. It is testified by practical use that the calculating accuracy of the new calculation system for straightening force satisfies the actual engineering requirement. New six-rollers straightening machines are designed and manufactured according to the new calculation system, which obtain notable economical and social benefits.
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Lee, Hau Wei, Po Er Hsu, Shan Peng Pan, Tze An Liu, and Huay Chung Liou. "Applying Structured Light on Cylinder Straightness Detection Using Break Line Method." Applied Mechanics and Materials 764-765 (May 2015): 1298–303. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.1298.

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Generally after a cylindrical steel bar is made from hot forming process, its contour will look like ‘U’ or ‘wavy’ topography. The preformed steel bar after steelmaking process needs to remove the outside oxide layer by lathe or peeling machine (commonly known as stripping). As a consequence, the deformation of steel bar will cause subsequent problems, such as eccentric rotating of steel bar as the lathe is running. Although it is necessary to remove the oxide layer, the deformation will increase waste materials. To prevent the problems, a straightening machine is usually used to straighten the cylindrical steel bar before the pickling process. However, most current straightening machines cannot measure cylindrical steel bar contour on-line instantly. This study proposed a test method for measure the contour of a large cylindrical steel bar based on multi-line structured light and machine vision. Break line method were performed to measure the contour of the cylindrical steel bar. The experimental result shows that the measurement error is in the range of ±0.4 mm after calibration. The study result concludes that the proposed method can be applied to straightening machine for real-time online measurement to improve straightening efficiency.
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Sáenz de Argandoña, Eneko, Elena Silvestre, Daniel Garcia, Joseba Mendiguren, and Lander Galdos. "Energy Efficient Servo Controlled Roll Levelling Machines." Key Engineering Materials 716 (October 2016): 413–19. http://dx.doi.org/10.4028/www.scientific.net/kem.716.413.

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The roll levelling and coil straightening facilities are becoming one of the most important process steps when forming Ultra High Strength Steels. The correct levelling and straightening of these materials are the main responsible for the stabilization of the residual stresses through the thickness and post forming springback of sheet metal formed components.Due to the arrangement of the rolls in roll levellers, micro-sliding occurs between the rolls and the sheet and the first rolls are subjected to high torques and high forces since they are responsible for the plastification of the material to a high extent. In order to reduce these drawbacks and optimize the energy consumption avoiding energy loses due to friction, the use of servo technology in levelling processes is studied in this paper.A wide range of materials are levelled using the conventional and the new servo controlled strategy that uses two servo motors and the process improvements are quantified.
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Okumoto, Yasuhisa, Hideharu Yanai, and Shin-ich Matsuzaki. "Angular Distortion Due to Fillet Welding and Its Straightening." Journal of Ship Production 16, no. 02 (May 1, 2000): 90–96. http://dx.doi.org/10.5957/jsp.2000.16.2.90.

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In order to increase the productivity of shipbuilding to respond to current situations such as decreasing numbers of skilled workers and aging of workers in the shipyard, mechanization and robotization have been accelerated. To apply them effectively, the current fabrication and assembling system of ship hull has to be reviewed so that the dimensional accuracy of the hull block and its components increase particularly. Accordingly, the authors had developed an "accurate production system" for the fabrication and assembly of flat block, which was based on advanced accuracy technology and modem automated machines. This report concerns the deformation due to the filet welding of longitudinals on a skin plate and its straightening; the estimation of welding deformation, especially angular distortion, and its straightening method using a press roller which was developed newly in this automated production line. In order to clarify the power of the straightening machine, non-linear FEM analysis was carried out.
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Zhou, Juan, Yuhang Huang, and Zhonghua Yu. "Research on the Design of a Hexagonal Shaft Straightening Machine Based on Quality Function Development and Evidence Theory." Symmetry 13, no. 4 (April 17, 2021): 707. http://dx.doi.org/10.3390/sym13040707.

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In response to the problem that weights in product planning and design are difficult to accurately reflect the real needs of users, a design method for hexagonal shaft straightening machines based on quality function configuration and evidence theory is proposed. First, based on the method of quality function deployment and evidence theory, the demand indicator and its importance are determined by market research and the Kano model. Second, to solve the conflict problem in the process of expert opinion aggregation, combined with evidence theory, taking expert knowledge as evidence, the possible value space of causal strength among nodes constitutes the recognition framework, which is used to synthesize the knowledge of multiple experts. The indicator correlation degree is reflected by using a correlation weight matrix, and effective solutions to the relevant theoretical problems and algorithms, such as those for competitive indicator evaluation, weight calculation and planning target value cases, are proposed. Finally, according to the analysis results for the various structural elements of the house of quality, a hexagonal shaft straightening machine function for master planning house of quality was constructed, and propose a design and build the main experimental platform. The relevant test results show that the technical specifications of the hexagonal shaft straightening machine basically meet the requirements of the overall planning target values, verifying the effectiveness and feasibility of the proposed method.
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Galvis Salazar, Juan Camilo, Heriberto Enrique Maury Ramírez, and Roque Julio Hernández Donado. "Elasto-plastic model to determine the maximum force for shaft straightening process." Ingeniería e Investigación 37, no. 2 (May 1, 2017): 107–10. http://dx.doi.org/10.15446/ing.investig.v37n2.61064.

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This paper shows the development of a mathematical model based on elasto-plastic behavior of materials in order to determine the bending moment and the maximum straightening force required to repair a bent shaft. The importance of this work is because many machines use shafts to transmit power and movement, and these elements can suffer permanent deflections during operation cycles. An appropriate reparation process can increase the life of these elements significantly. Knowing the mechanics for a straightening process is essential for design, processes and maintenance engineers in charge of systems that use these elements (shafts).
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Dissertations / Theses on the topic "Straightening machines"

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Bona, Melissa Ellen. "The effect of straightening and grinding of welds on track roughness." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16180/.

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Rail is a very expensive component of the railway track. Therefore, research methods extending rail life have great economic importance. During the past thirty years and, particularly during the past ten years there has been an increasing awareness throughout most rail networks in the world of the need to introduce improved design criteria, better construction techniques and higher standard track generally. This implies that quality control at all levels is mandatory if these objectives are to be achieved. With the improved understanding of degradation of track, a more complete comprehension of the costs associated with different operating and infrastructure conditions should also be developed, aiding in the determination of efficient maintenance costs and their contribution to access charges. Track and structures together account for 60% of maintenance costs, with 50% of the total being track. The UIC has done a lot of work on comparative performance indicators, and these show what potential savings much be out there for the taking, just by adopting current best practice. The old wisdom is that it's not enough o do things rights; we have to make sure that we do the right things. These developments have largely resulted from the demand for higher speeds particularly in passenger services and the demand to accept heavier axle loads of freight traffic. Whilst the conventional railway track structure is not likely to change significantly over the next ten years there will be a requirement over that period for better quality track infrastructure. This means less rail surface defects, less internal defects and less wheels irregularities. The presence of rail surface defects generally increases the roughness of the track leading to a poor passenger ride and increased safety risk with freight traffic. In addition, rail surface defects will generally increase the degradation rate of other track components; however, not all defects will produce visible track deterioration. Dynamic impacts produced by the rollingstock running over rail surface defects, such as poor welds, will, over time, create continuous rail defects, loosening of fastenings, abrasion and skewing of sleepers, crushing of ballast and loss of formation geometry. It is only in the recent years that the importance of poor welds in track has been identified. Dips and peaks must be recognised as a severe track irregularity that needs to be addressed and removed. Current maintenance activities have little effect on removing misaligned welds in track and the improvement obtained after the maintenance works is generally short lived. On the other hand, straightening operations have proven to solve the problem and maintain the results following 7 months of traffic. As part of this project, a six kilometre test section was selected on the Mt Isa Line and all welds located in this region were monitored for over 9 months to increase the understanding of the effect of individual maintenance activities on the track roughness. Three 2km Divisions were established; each Division had different maintenance activities and levels of intervention completed over the duration of the project. Over 15,000 readings were recorded and analysed. The following conclusions were drawn. The effect of cycle tamping was clearly identified when comparing the means of weld located in Division 1, 2 to the mean of welds in Division 3. Cycle tamping showed to have a significant positive effect on the dipped welds geometry and an increase in severity of peaked welds prior to their correction. Straightening operations completed in Division 1 and 2 reduced the overall mean of weld misalignments. These Divisions were subjected to different levels of straightening intervention however they produced similar results. Division 1 all dips were straightened and Division 2 only dips >0.3mm were straightened. This means that no additional benefit, in terms of overall misalignment of welds, can be gained when straightening operations target dips with a misalignment smaller than 0.3mm. Cycle grinding proved to have little effect on the removal of both dips and peaks. In fact, due to the configuration of the grinding machine, grinding operation produced a slight worsening of the dips misalignments and only a minor improvement of peaks. Although long term monitoring of the site may show minor variations in weld geometry performance, after approximately 3.9 Mgt of traffic the mean of dipped welds in Division 1 and 2 appeared to remain unaltered, as Division 3 showed a minor worsening. Furthermore, the mean of peaked welds in Division 1 and 2 appeared to remain unaltered, as Division 3 showed a minor worsening.
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Hasík, Dávid. "Podávací válce kruhových tyčí pro kosoúhlou rovnačku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444283.

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The diploma thesis consists of two main parts. First part contains analysis of general knowledge of bar feeding machines in the straightening industry. Second part of the thesis follows with three designs of feeding roller devices. One of the designs is chosen and deeply described with drawings included.
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Pruša, Lubomír. "Konstrukční návrh manipulátoru obrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230427.

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This master’s thesis deals with design of manipulator which manipulate the types of shift forks 1/5, 2/4, 3/7 and 6/R. The machine takes parts from the belt, which transports them from mark station. Parts are moved to the straightening machine by manipulator. Straightened parts are transported on the storage place, from which are sorted into the boxes and palletized by robot. As a part of work is the proposal of alternativ solutions, selecting the best solution, the design of the chosen variant and technical calculations of the main parts of the manipulator. The work includes the accompanying drawings, assembly drawings and 3D model.
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Hudeček, Josef. "Návrh rovnačky XRK 9-50." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231137.

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The objective of this master´s thesis is to design machines for straightening rods of circular cross section with a diameter of 10 mm to 50 mm, length 6 m to 9 m. Machine concept is as the simplest as possible with a large proportion of welded elements
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Jheng, Huei-Jhuan, and 鄭惠專. "Research and Development of the Automatic Sheet Metal Straightening Machine." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/97223913682770101054.

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碩士
國立雲林科技大學
機械工程系碩士班
97
This research introduces the concept of mechatronics into traditional sheet metal straightening machine. Using data acquisition card and Lab-VIEW software enables the user not only to adjust the straightening speed and interference between rollers, but also to detect the outcome of the straightening operation via a set of AC induction motor, stepping motor, and LVDT, respectively. In addition to speed control, the functions of monitoring the voltage, electric current, and the loading are implemented, facilitating the following computation of the power consumption. As for the control of the roller interference, a novel mechanism has been designed in order to level the roller up/down accurately with single stepping motor, attributed to its high stability and superior rotational precision. Moreover, more than one LVDT can be installed in the exit to measure the final straightness of the metal sheet. The high sensitivity and precision of LVDT render accurate readouts of the sheet deformation, which is then stored for the subsequent calculation. The interfacial panel, which is complied with Lab-VIEW, allows the user to assign the roller interference and straightening speed; meanwhile the parameters related to the process are also displayed through four waveform windows. From these windows, one may monitor the real-time information of straightening and its comparison with the preset target. Finally, this automatic rig has successfully been applied to sheet metal straightening in a series of preliminary tests.
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Chen, Ying-Jen, and 陳英任. "The study of the 630 Stainless Steel surface hardness influence by the straightening machine." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/24411470399486330323.

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碩士
建國科技大學
自動化工程系暨機電光系統研究所
97
Abstract This research is to study the effect of surface hardness、straightness and roughness of AISI 630(HH1150) Duplex Stainless Steel produced by the two-roll polishing machine. The optimal machine manufacturing parameters can be therefore obtained according to the experimental results. According to the experimental results, the surface hardness increases with the straightening process, peeling process and polishing process due to the work hardening, while the influence of hardness in the polishing process is more serious than two others. By the experimental results, the straightness and surface roughness is controlled in the standard range. If the surface hardness wants to be controlled precisely less than 1 HRC, the cross angle difference between upper and lower roller of polishing machine needs to set up according to the standard value after experiment and the equipment load doesn’t exceed 50%. The surface hardness is higher than the central hardness three HRC. The experiment proves that the cause is the material hardness after heat treatment, not the finishing process. In addition to adjust the polishing parameter, the control of R/2 hardness after heat treatment is also an important factor to control surface hardness well.
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Books on the topic "Straightening machines"

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Jiao zhi ji shu yu li lun de xin tan suo. Beijing: Ye jin gong ye chu ban she, 2010.

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Thiel, Stefan. Automatisierung des Biegerichtens. Berlin: Springer, 1988.

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Parker, Philip M. The World Market for Machines for Bending, Folding, Straightening, or Flattening Metal Excluding Numerically Controlled Machines: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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The World Market for Machines for Bending, Folding, Straightening, or Flattening Metal Excluding Numerically Controlled Machines: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Parker, Philip M. The World Market for Numerically Controlled Machines for Bending, Folding, Straightening, or Flattening Metal: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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The World Market for Numerically Controlled Machines for Bending, Folding, Straightening, or Flattening Metal: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Book chapters on the topic "Straightening machines"

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Sun, Yacan. "Application of the Infrared Sensitive Technology in Hot Straightening Machines Based on Data Analysis." In Advances in Intelligent Systems and Computing, 305–9. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-33-4572-0_45.

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Bader, Fabian, Lukas Bathelt, Eugen Djakow, Werner Homberg, Christian Henke, and Ansgar Trächtler. "Self-optimized, Intelligent Open-Loop-Controlled Steel Strip Straightening Machine for Advanced Formability." In Forming the Future, 3–11. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75381-8_1.

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Conference papers on the topic "Straightening machines"

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Zajcev, A. V. "Models of indicators of operation of straightening-tamping-straightening machines continuous cyclic action." In Scientific trends: Questions of exact and technical sciences. L-Journal, 2020. http://dx.doi.org/10.18411/sciencepublic-12-08-2020-04.

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Rostek, Tim, and Werner Homberg. "Improved set up strategies for steel strip straightening machines." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112734.

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Petruška, Jindřich, Tomáš Návrat, František Šebek, and Marek Benešovský. "Optimal intermeshing of multi roller cross roll straightening machine." In ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. Author(s), 2016. http://dx.doi.org/10.1063/1.4963517.

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Zhu, Yongxiang, Jinming Leng, and Shidong Tang. "Technology for Straightening the Bent GT Rotor." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55423.

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The GT rotor is composed of a plurality of discs and two shafts. The GT gas turbine rotor may be bent after assembled because of each part has its geometric tolerance.The scheme must be carry out to straight the bend rotor. In oder to get well high speed balance, the surface of each disc excircle, torque tube and disc adaptor can’t be remachine on lath after assemble. We can machine the journal of the shaft on horizontal lathe to straight the slightly bended rotor. For the serious bended rotor, we must disassemble the rotor and change the parallelism of two side of the disc flange on vertical lathe to get a straight rotor. This attic detailed analysis these two schemes and proposed specific actions measures, then the problem of how to straight a bent GT rotor get well solution.
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Zhang, Yongquan, Hong Lu, Wei Fan, Shaojun Wang, Qinyu Wei, and He Ling. "The Pressure Straightening Technology of Linear Guide Rails Using Dual Indenter-Dual Clamp System." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2699.

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To improve the compressive capacity and straightening efficiency of straightening process, the stroke-deflection model (SDM) using dual indenter and dual clamp system (DIDCS) for linear guide rails is developed in this paper. The DIDCS is actually simplified as a symmetrically supported beam with two symmetrical concentrated forces on the top surface of workpiece, so the straightening process is regarded as pure bending process. To explore the deflection variation during the whole process with DIDCS, the curvature-deflection model (CDM) considering the span control of dual indenter and dual clamp is firstly analyzed based on elastic-plastic deformation theory and small deformation principle. The geometrical features and material properties of linear guide rails, which are the main factors influencing bending characteristics, are then mathematically modeled for the further analysis of stress and strain distributions in straightening process. Besides, to obtain the actual bending moment model (BMM) of different model parameters, the distribution regulations of elastic and plastic regions are analyzed followed by pure bending assumptions. The bending rebound model (BRM) is established with bending moment, geometrical features and material properties, and the SDM is finally calculated by initial deflection, rebound deflection and span parameters of the DIDCS. On basis of the DIDCS, the straightening process is simulated with the established finite element analysis model (FEM) to demonstrate the longitudinal stress distribution and the reflection of different straightening stages. The proposed SDM is also experimentally validated on the ROSE-JZ50 straightening machine with different materials.
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Peng, Xiang-rong. "The High-Precision Control of the Large Hydraulic Straightening Machine." In 2013 Fourth International Conference on Digital Manufacturing & Automation (ICDMA). IEEE, 2013. http://dx.doi.org/10.1109/icdma.2013.350.

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Zheng, Yu-Hang, Guo-Dong Sun, and Shu-Zheng Mei. "The design of pin straightening machine for abnormal electronic components." In The 2015 International Conference on Mechanics and Mechanical Engineering (MME 2015). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813145603_0121.

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Luk'yanov, S. I., A. E. Vasil'ev, and O. S. Logunova. "Improvement of electric drive of withdrawal and straightening unit in continuous casting machine." In 2016 2nd International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2016. http://dx.doi.org/10.1109/icieam.2016.7911516.

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Wenang, Liu, Chen Li, and Xu Zhiliang. "The design of automatic straightening machine system for high precision elevator guide rails." In 2014 33rd Chinese Control Conference (CCC). IEEE, 2014. http://dx.doi.org/10.1109/chicc.2014.6897112.

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Jinggang, Yi, Wang Zehe, Liu Jiangtao, and Jiang Haiyong. "Study on On-line Intelligent Measurement and Control System of Shaft Parts' Precision Straightening Machine." In 2007 8th International Conference on Electronic Measurement and Instruments. IEEE, 2007. http://dx.doi.org/10.1109/icemi.2007.4350763.

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