• Title/Summary/Keyword: Forming Machine

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Domestic Development of Vibrational Film Forming Machine and Die in the High Speed Production(II) - Multi-production forming machine - (고속 생산형 필름 진동판 성형기 및 금형 국산화 개발(II) - 다량 생산 진동판 성형기 -)

  • Kim, Jungl-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.13 no.1
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    • pp.52-58
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    • 2014
  • This study consists of two parts. The first discusses the development of a single production forming machine which was reported in earlier papers. The second outlines the development of a multi-production forming machine, which consists primarily of a film feeding unit, an unwinding unit, and a heating block unit. The heating block unit of the multi-production forming machine has 30 members per die. An analysis of the stress deformation and temperature deviation of this machine is carried out using ANSYS Workbench and CFX-11 under the design conditions. According to this analysis, the maximum deflection in the Z-direction is $0.05104{\mu}m$ and the maximum temperature deviation is $0.7^{\circ}C$ when the temperature of the heating block unit is $175^{\circ}C$. It was also found that these values are structurally safe. The advantage of the developed multi-production forming machine is demonstrated to be in its offering of a proper voice test.

Domestic Development of Vibrational Film Forming Machine and Die and Mold in the High Speed Production(I) - Single production forming machine - (고속 생산형 필름 진동판 성형기 및 금형 국산화 개발(I) - 단수 생산 진동판 성형기 -)

  • Kim, Jung-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.11 no.6
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    • pp.9-15
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    • 2012
  • Vibrational film has been more employed in ear-phones or small type of speakers along with a wide use of portable multi-media equipments such as MP3 and MP4. However, the current hand work production process of diaphragms is inefficient. In this study, a die-and-mold and a single production forming machine are developed, and they result in a multi-production forming machine. The multi-production forming machine consists primarily of a film feeding unit and an unwinding unit. A vacuum suction device provides the film feeding unit, while the unwinding unit is obtained using an appropriate damper. The advantage of the developed single production forming machine is shown according to a proper voice test.

A study on Press Forming Machine of Titanium and Aluminium Plates Formability (프레스 포밍 머신의 티타늄과 알루미늄 판재 성형성에 관한 연구)

  • Jung, Won-Jae;Kang, Han-Bin;Lee, Dong-Wook;Park, Min-Hyeok;Song, Ju-Han;Lee, Seok-Soon
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.12 no.5
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    • pp.86-93
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    • 2013
  • Main function of the Press forming Machine is the forming for plates. The head of the Press forming machine consist of several parts. It was named Press forming-contraction and Press forming_expansion according to formability of plates. Aluminium and Titanum plates are forming by using the Press forming machine. In this study, we analyzed sheet metal forming including plastic deformation and the contact pressure in the bearing. Finite element analysis results of Press forming-contraction and Press forming_expansion show the similar results of the actual specimen plates and the bearing contact pressures show the acceptable level of stress in both aluminum and titanium specimens.

Design of Roll Forming Machine for Fail Safe Chord Forming Process (페일 세이프 코드의 성형가공 롤 포밍 머신의 설계)

  • Jung, Won-Jae;Park, Min-Hyeok;Choi, Jin-Kyu;Nam, Kwang-Sik;Shang, Zhao;Lee, Jae-Hyung;Lee, Seok-Soon
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.13 no.4
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    • pp.44-49
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    • 2014
  • Roll forming technology has a problem in that it depends only on experience without accurate data in the actual field. To solve this problem, it is necessary to procure accurate data during the roll forming process. To this end, we determined the operating force and the material thickness by implementing several changes to those variables during an experiment. This study compares the FEA results and experimental results. Experimental results were used for the basic data of the design. The FEA results show that the roll forming machine is operating accurately and safely. And, a comparison of the results shows that the design of the automatic roll forming machine is operating in the right way. This design of an automatic roll forming machine will be helpful for many areas of the industry.

Development of Power Train for Feeding Box of CNC Wire Forming Machine (CNC 와이어 성형기의 피딩박스 구동장치 개발)

  • Cho, Hyun-Deog
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.16 no.2
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    • pp.50-56
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    • 2007
  • Wire forming machine is widely used in industries to make a variety of wire products such as coil springs and links. Along with the rapid development of CNC technologies, the usage of wire forming machine varies from single-purpose machinery to universal CNC machinery. Rotating the wires while feeding them simultaneously, we can improve the performance of the machines with aspects of efficient tooling and complicated geometric forming. In this study, a new gear train is developed for the control of both feeding and rotating wires independently at the same time. The developed mechanism has many benefits as following, making more complicated geometric and precision products, easier tooling, and simpler programming.

A Development of Wet-based Virtual Press (웹 기반의 가상 프레스 개발)

  • 정완진;장동영;이학림;최석우;나경환
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2002.05a
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    • pp.121-124
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    • 2002
  • This paper resents a virtual forming system to simulate deep drawing process for stress-strain information by utilizing virtual system designed using Virtual Reality Modeling Language (VRML) and computer aided analysis (CAE) tool. The CAE tool to calculate stress, strain, and deformation is designed using Finite Element Method. Stress distributions and deformation profiles as well as the operation of forming machine can be simulated and visualized in the web. The developed system consists of three modules, input module, virtual forming machine module, and output module. The input nodule was designed using HTML and ASP. The input data for FEM calculation is directed to the forming machine module for calculation. The results from the forming machine module can be visualized through output module as well as the forming process simulation.

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Deformation analysis of copper pipe for hair pin under the bending forming using the Mandrel (맨드릴을 사용한 굽힘 성형시 헤어핀용 동관의 변형 해석)

  • 김광영;윤두표
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1630-1633
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    • 2003
  • Hair pin bending machine is pipe forming machine consisting of heat exchanger product system. Hair pin produced by these machine is pathway of refrigerant and play a important role improving the performance and productivity of heat exchanger. The core technology of hair pin bending machine is forming the straight pipe into U-type without any defaults. Therefore, this paper study the relation between the pipe bending forming and the shape and position of mandrel using the elastic-plastic finite element analysis and provide a foundation technology for which developing the hair pin bending machine. The results are followed 1. Mandrel located in front of rotating center of bending die minimized the circular shape variation of copper pipe. 2. Diameter change of mandrel hardly effect the pipe shape.

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Production of CO2 Laser Forming Machine for Bending of Sheet Metal Using the FE-Analysis (유한요소해석을 이용한 박판 벤딩용 CO2 레이저 성형기 제작)

  • Ko D.C.;Lee C.J.;Kim B.M.
    • Transactions of Materials Processing
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    • v.15 no.4 s.85
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    • pp.319-325
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    • 2006
  • The laser forming process is a new flexible forming process without forming tools and external force, which is applied to various fields of industry. Especially, applications of the laser forming process focused on cutting, welding and marking process. In this paper, the laser bending process of sheet metal which is heated by laser beam and formed by internal stress is simulated by using thermo elastic-plastic analysis model. Based on the result of FE-analysis, the laser bending machine is made to obtain reliable data for sheet bending. Under the same condition as FE-analysis, the laser bending experiment has been performed to ver 펴 the result of FE-analysis and good agreement has been obtained between FE-analysis and experiments. Additional laser bending experiments have been performed to evaluate the laser bending machine.

A study of Double Sheet Multi-forming Equipment (2겹 판재 멀티포밍 장치에 관한 연구)

  • Yun, Jae-Woong;Son, Ok-Jong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.3
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    • pp.49-55
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    • 2017
  • Most motor cases adopt deep drawing products, which are excellent in waterproof functions, concentricity, right angle, and quality. In addition, the blower motor and seat motor, which are installed in the car interior and do not require waterproof function, adopts a multi-forming manufacturing method. The deep drawing process requires an expensive transfer press that can digest approximately 12 processes, such as drawing, trimming and piercing. On the other hand, products can be produced with low investment because the multi-forming method is composed of one multi-forming machine or one multi-forming machine and one press. The multi-forming machine is a high-priced facility that is mostly imported and a bending / shearing process multi-foaming machine, which was developed by domestic small and medium-sized enterprises, is not enough to reduce the production cost. An integral multi - forming machine is used as a limited working method for thin material and small products. A large product and thick material has a high shear load. A large product and thick material has a high shear load and uses a single crank press. After blanking, the worker manually feeds the material to a multi-forming machine. When the bending operation is performed in the multi-forming machine, it is transferred to the press again to calibrate the dimensions. This variance in work processes has resulted in lower cost competitiveness due to the lower productivity, quality issues, and excessive operator input. The aim of this study was to establish a stable and cost - effective production system through bending / shearing process separation and facility automation.

Development of Roll Forming Machine Using TRIZ (TRIZ를 이용한 롤 포밍 머신의 개발)

  • Song, Joon-Ho;Oh, Dae-Jin;Yoo, Seung-Hyun;Choi, Myung-Soo
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.1548-1552
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    • 2007
  • The roll forming machines currently used in industries require manual change of individual rolls taking 30 to 60 minutes of operation shutdown, This in turn reduces the operational efficiency by considerable margin and has one of the major negative effect on the overall productivity. To improve the operational efficiency of the existing roll forming machine, current manual roll changing process needs automatation to save considerable amount of time. In this study, TRIZ is adopted in the development of new roll forming machine. The Ideal Final Result (IFR) was set up initially and the fundamental causes were examined by Root Cause Analysis. The final proposed concept was drawn from the application of 40 invention principles of TRIZ.

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