• Title/Summary/Keyword: Jig system

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Development of a Dedicated CAD System for Welding Jigs for Automotive Body Assembly (차체 조립용 용접 지그 설계 전용 CAD시스템 개발)

  • 조병철;이상헌;김형준;우윤환;이강수
    • Korean Journal of Computational Design and Engineering
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    • v.8 no.3
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    • pp.189-200
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    • 2003
  • This paper introduces the development of a three-dimensional jig design system for automotive body welding assembly. Recently, three-dimensional CAD systems have been introduced in the jig design area, because they reduce errors in design process and the design result can be used readily for virtual manufacturing simulation. However, to facilitate three-dimensional jig design, it is essential to customize three-dimensional CAD system for this specific design area. To accomplish this object, we first standardized the parts and units in a jig assembly, and then built the standard part library. We also developed the dedicated 3D design capabilities of jig units and a jig base. By using this system, design can be performed more intuitively, and verification and simulation of design results can be done more easily. The proposed system has been implemented using the UG/Open API of the Unigraphics system.

Development of Drilling Jig by Practical and Adaptive Tooling System(Part 1) - System Analysis of Part Drawing and Jig Design

  • Sim, Sung-bo;Lee, Sung-Taeg
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2000.04a
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    • pp.104-108
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    • 2000
  • Drilling Jig is the device according to industrial demand for multi manufacturing products on the growing at alarming rate. In the field of design and making for machine tool working, welding, assembling with jig and fixture for mass production is a specific division. In order to prevent the production defects the optimum design of product, fig and fixture putting in the field is very significant manufacturing method. They require analysis of many kinds of important factors, theory and practice of machine tool operating process and its phenomena, jig & fixture structure, machining condition for tool making tool materials, heat treatment of jig & fixture components, know-how and so on. In this study we designed and constructed a drilling jig of mass production and performed tryout under the Auto CAD, database, and window environment. Especially Part1 of this study is reveals with the analysis of part drawing, jig planning, jig design etc.

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Development of a Measurement System of Torsional and Conical Suspension Bushing Rates with the Flexible Jig (유연 지그를 이용한 서스펜션 부싱의 비틀림 및 원추 강성 측정기 개발)

  • 이재곤;박용국;김기대
    • Transactions of the Korean Society of Automotive Engineers
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    • v.11 no.1
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    • pp.121-127
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    • 2003
  • The stiffness of a bushing in a suspension is extremely important for the overall performance of the suspension system. A new measurement system including the flexible jig was developed to measure the multi-directional stiffness of bushings. To overcome the disadvantage of building each individual jig for each type and size of a bushing, we designed the flexible jig which can accommodate numerous bushings of similar shapes and sizes. Upon using the novel design of the flexible jig in the industry, we could successfully measure the torsional and conical stiffness of many bushings and apply the data for the prediction and evaluation of the performance of a suspension system, which would assist designing the optimal suspension system.

Development of Jig System to Improve the Weldability of Vehicle Seat Frame (자동차용 시트프레임의 용접성 향상을 위한 지그 시스템 개발)

  • Shin, Yun-Ho;Jeon, Euy-Sik
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.2
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    • pp.173-178
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    • 2007
  • Improvement of welding property of seat fiame is necessary for safety because seat frame is a unique connecting structural part between the rider and vehicle. Generally the robot and jig system for own use is used for welding of seat frame and unwelded zone can be inspected because of the geometrical interference between robot and jig system. In this study the unwelded zone of the conventional welding jig system is analysed and the 3D modeling and design change to solve the problem is discussed. As a result the weldability of system is improved and the manual welding jig is unnecessary because of the optimal jig system.

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Development of Design Capabilities for Cylinder and Jig Base in a 3-D Jig Design System for Automobile Body Assembly (차체 조립용 3차원 지그 설계 시스템에서의 실린더 및 베이스 설계 프로그램 개발)

  • 조병철;이상헌
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1475-1478
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    • 2003
  • This paper introduces the development of design capabilities for air cylinders and jig bases in a three-dimensional jig design system for automobile body assembly. We first built the standard part library for these parts, and then developed the dedicated 3D design capabilities based on the Unigraphics system. By using this 3-D jig design system, design can be performed more intuitively, and verification and simulation of design results can be done more easily as the 3-D design result can be used readily for virtual manufacturing simulation.

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Influence of luminous jig to catching of squid jigging in the Korean waters (오징어 채낚기 낚시의 야광이 어획에 미치는 영향)

  • RYU, Kyung-Jin;KIM, Hyung-Seok
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.55 no.4
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    • pp.303-309
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    • 2019
  • This study identified the characteristics of squid jig in korea waters by investigating the effect of color and luminous performance of squid jig on the catch of squid and experimenting the result of jig according to green jig or white jig, and whether using luminous or not were tested in the sea to improve the jig of squid jigging. For this purpose, a total of 13 sea experiments were conducted using T/S No. 2 Galmaegi. As a result, 341 squids were caught. Among them, 221 squids were caught by green jig (64.8%), 64 squids were caught by white jig (18.8%), 41 squids were caught by green luminous jig (13.8%), and nine squids were caught by white luminous jig (2.6%). The green jig commonly used in jigging vessel was most effective, and luminous jig was less effective than that non-luminous jig. The squids caught were Japanese flying squid (Todarodes pacificus), swordtip squid (Loligo edulis) and spear squid (Loligo bleekeri), and no significant characteristics were found according to the color of jig and the presence of luminous.

Design Guidance of Jig/Fixture for Flexible Manufacturing System (유연조립 시스템에서의 Jig/Fixture 설계에 관한 연구)

  • Shin, Chul-Kyun
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.31 no.1 s.256
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    • pp.1-10
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    • 2007
  • This paper presents a design guidance of jig/fixture for flexible manufacturing system based on the verification of a base assembly motion instability. In flexible assembly system, the base assembly needs to be maintained in its assembled state without being taken apart. This requires stability in motion while the base assembly is handled or tilted. Therefore, the instability of the base assembly motion should be considered when determining the guide line of designing jig/fixture by evaluating a degree of the motion instability of the base assembly. To derive the instability, first we inference collision free assembly directions by extracting separable directions for the mating parts and calculate the separability which gives informations as to how the parts can be easily separated. Using these results, we determine the instability evaluated by summing all the modified separabilities of each component part within base assembly.

Topology, Shape and Sizing Optimization of the Jig Supporting High Voltage Pothead (고전압 장비 지그의 동특성에 대한 위상, 형상 및 치수 최적화)

  • Choi, Bong-Kyun;Lee, Jae-Hwan;Kim, Young-Joong
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.26 no.5
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    • pp.351-358
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    • 2013
  • In the electric power supplying industry, outdoor sealing end (pothead) is used and sometimes it is necessary to check the seismic qualification analysis or test which is intended to demonstrate that the equipment have adequate integrity to withstand stress of the specified seismic event and still performs their function. And since the pothead is mounted on the supporting jig, the avoidance of resonance between the pothead and jig is required. In order to design jig, three types of optimization are performed to get the minimum weight while satisfying the natural frequency constraint using ANSYS. Optimal array, position and thickness of truss members of the jig are obtained through topology, shape and sizing optimization process, respectively. And seismic analysis of the pothead on the jig for given RRS acceleration computes the displacement and stress of the pothead which shows the safety of the pothead. The obtained natural frequency, mass, and member thickness of the jig are compared with those of the reference jig which was used for seismic experimental test. The numerical results of the jig in the research is more optimized than the jig used in the experimental test.

A study on wear damage of SKD11 steel material for a cutting mold jig (SKD11 절단금형치구용 소재의 마모손상에 관한 연구)

  • Nam, Ki-Woo;Kim, Cheol-Su;Ahn, Seok-Hwan
    • Journal of Power System Engineering
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    • v.20 no.5
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    • pp.5-13
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    • 2016
  • This study is on wear damage of the material for a molding machine that be used at finally cutting of metal beam made in roll forming process of vehicle bump beam process line. SKD11 steel was used with the material for cutting mold jig. In the cutting mold jig, Ti diffusion heat treatment after vacuum heat treatment was carried out for upgrade of surface hardness and anti-wear. Also, the heat treatments by various methods were performed to compare the wear damage degree against above the existing heat treatment. Wear loss and friction coefficient were obtained from wear test. And, micro Vickers hardness values were compared with damaged parts or not of cutting mold jig. Micro Vickers hardness value appeared higher at the undamaged part by Ti diffusion heat treatment. The micro Vickers hardness well followed a two-parameter Weibull probability distribution.