• Title/Summary/Keyword: normal crimping

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A study on waveforms with press conditions of Harness terminal (단자(Terminal) 압착조건에 따른 파형의 고찰)

  • Shin, Young-Lok;Yang, Yun-Suk;Kim, Chul-Han;SaGong, Geon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.04b
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    • pp.172-175
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    • 2000
  • The crimping connection is a permanent connection that maintains mechanical and electrical property for a long time by crimping two conductors. In this paper, we have done a basic study to decide normal or abnormal condition depending on crimping. Using PZT piezo-sensor, we have analyzed crimping waveforms according to the crimping height. And hence the normal or abnormal condition of crimping connections in real time could be decided by comparison of crimping waveforms in the cases of normal crimping, over crimping, under crimping and core omitting.

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A study and analysis of waveforms with press conditions of terminal (단자(Terminal) 압착 조건에 따른 파형의 고찰 및 분석)

  • Shin, Young-Lok;Yang, Yun-Suk;Kim, Chul-Han;SaGong, Geon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.05b
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    • pp.65-69
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    • 2000
  • The crimping connection is a permanent connection that maintains mechanical and electrical property for a long time by crimping two conductors. In this paper, we have done a basic study to make a decision the normal or abnormal condition depending on crimping. By using PZT piezo-sensor, we have compared and analyzed crimping waveforms of abnormal conditions(core ommiting, cover biting) at the normal crimping height. And hence the normal or abnormal condition of crimping connections in real time could be determined by comparison of crimping waveforms in the cases of normal crimping, core omitting and cover biting.

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Applications of a Quadrant plane Amorphous Silicon Photo Position Sensor (4분면 아몰퍼스 실리콘 Photo 위치센서의 응용)

  • 김철한;신영록;사공건
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.11a
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    • pp.445-447
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    • 2000
  • The terminal and core(wire conductor) in a Harness processing is connected by putting them in a applicator by virtue of a manual operation. A normal or abnormal condition of crimping connections is nearly determined by a skilled worker. In general, a skilled worker operates a press motor with a foot switch by pressing on foot and puts a wire conductor into a press with one hand. By doing so, sufficient efficiency is not obtained by a worker. In this paper, a basic study has done to make improve an efficiency by finding the normal arrangement out as to whether a terminal and wire conductor in Harness are placed on the right position or not with a quadrant plane photo position sensor.

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Research on the Decrease of Dud Ammunition Rate of Grenade Fuzes of Remote Controlled Munition System(For practice) through Quality Improvement (연습용 회로지령탄약 발사통 신관 불발율 감소에 관한 연구)

  • Lee, Jong Hyeon;Jung, Hee Chur;Park, Jun Sung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.3
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    • pp.328-334
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    • 2020
  • At the recent practice test of the Remote Controlled Munition system (for practice), nine out of 125 samples were generated. Although 7.2 % misfires occurred, the acceptance test met the defense standards. Minimizing the probability of broken fuses is essential to reducing the number of samples and improving the AQL according to the process quality. In addition, it is necessary to increase military training and ensure user safety. In the case of practical grenades, hit-type detonators are applied. Unlike the normal design, which takes a hit by strikers, a different design of a hit by pressure from a pressure generator was used. This study analyzed the detonator surface through computational fluid dynamics. The results showed that the probability of functional weakness and retraction increased with increasing slope of the detonator surface. To overcome this, design changes were made to improve the fuse crimping process and increase the detonator holder seat. A performance test with the same number of samples from the whole quantity was operated. The probability of broken fuses was 0 %. Therefore, the reliability and performance of the ammunition can be improved and is expected to contribute to the drawing and process design when developing similar ammunition.