国产无码在线播放列表,久久久伦鲁鲁鲁免费高清,天天躁日日躁xxxxaa,毛片无遮挡A片免费无码网站,人妻就是爽 - ThePorn

Jiangmen hardware accessories factory analyzes its hardware molds according to the combination of processes, which are divided into?

2019-12-29 1436

  Life often see mold, then hardware mold according to the combination of processes, which can be divided into several?

  1. Single process module

  In one stroke of the press, only one stamping process is completed.

  2. Compound module

  There is only one working position. In one stroke of the press, two or more stamping processes are completed on the same working position hardware mold at the same time.

  3. Progressive die (also called continuous die)

  In the feeding direction of the blank, there are two or more stations. In one stroke of the press, two or more stamping processes are completed in different stations one by one. Continuous die (progressive die), press in a stamping stroke, using strip stamping raw materials, in a pair of die with several different stations at the same time to complete multiple stamping process of cold stamping die, die every time the completion of a stamping, the strip fixed distance movement once, until the completion of the product. In the process of continuous die stamping, the material strip always moves in one direction; the progressive die moves in two or more directions after the material strip inside the die is cut off; the automatic continuous die completes the material strip feeding inside the die; the mechanical hand or other automatic facilities of stamping die with different processes are used in a stamping production chain to complete the work piece by using the die or part movement Stamping rated die is called multi position die.

  Finally, let's popularize one of the key parts in the mold accessories - mold spring.

  Mold spring includes: Japanese standard mold spring, German standard mold spring, spring, polyurethane spring, usually mold spring refers to rectangular mold spring. Die spring is widely used in stamping die, metal die-casting die, plastic mold and other elastic motion precision mechanical equipment, automobile and other fields. The die spring is generally made of chromium alloy steel. Chromium alloy spring steel has the characteristics of high temperature resistance, high rigidity and long service life. The rectangular die spring has the characteristics of small volume, good elasticity, large rigidity, high precision, rectangular material, color separation spraying (plating) on the surface to distinguish different loads, beautiful appearance, etc.

  Jiangmen hardware accessories factory http://www.uvcloud.cn//


亚洲中文字幕色情网凹凸视频 | 国产欧美一级A片无码免费下 | 牛牛精品一区二区三区免费视频 | 国产欧美一区二区三区特黄手机版 | 一级A片成人久久免费U盾 | 欧美一级婬片A片无码潘金莲直播 | 爽 躁多水 快 88AV | 6080亚洲精品免费 | 国产无遮挡裸体免费视频 | 中文字幕无乱码人妻丝袜 | 无码人妻一区二区三区蜜臀免费 | 国产精品21一区二区 | 几人强行糟蹋人妻HD | 又粗又深又猛又爽无遮挡的歇后语 | 人妻系列中文无码一区二区 | 91人妻人人爽人人添夜夜爽直软件播 | 中国AV毛片内谢美女一二三区 | 国产一级久久毛片扣扣 | 久久综合婷婷国产二区高清 | 波多野结衣一区二区三区在线观看 | 清纯导购员白虎妹子 | 亚洲AV无码区国产乱 | 91人人爽人人爽人人精 | 91人妻互换一区二区 | 激情视频激情图片激情小说 | 欧美成人无码片免费看A片秀色 | 成人在线免费观看视频 | 人人澡人人爽人人人妻少妇 | 国产又粗又猛又爽又黄的视频先 | 国产三级片在线观看一区二区 | 精品人妻一区二区三区阅读全文 | 艳妇乳肉豪妇荡乳Aⅴ东京热糸列 | 一级a免一级a做免费 | 日本一木道无码人妻精品 | 韩国一级婬片A片AAA视频软件 | 成人精品一区二区三区电影 | 91在线精品无码秘入口九色 | …免费看`美女黄色视频 | 18 午夜精品福利啪啪 | 久久久伦鲁鲁鲁免费高清 | 成人午夜做爰高潮片免费吸气 |