午夜呻吟一区二区三区,成人AV一二区在线播放,国产一级午夜一级在线观看,成人h动漫精品一区二区器材,国产精品扒开腿做爽爽爽A片唱戏

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://m.wubuu.cn//


在线观看强奸美女视频网站大全 | 呦小BBw搡BBBB一线天 | 亚洲无码不卡毛片在线看 | 红桃视频vip成人网站 | 成人做爰视频WWW网站游戏 | 天天摸,人人肏在线视频 | 国精品人妻一区二区三区无码野战 | 美女自慰喷水在线观看 | 粉嫩小泬无套内谢中国免费 | 色情按摩A片在线观看韩国 91精品国产一区二区无码 | 黄 网站涩免费蜜桃网站 | 免费一级a一片一久久裸体 四季无码AV在线播放播放 | 在线观看成人免费视频 | 又大又粗又硬又黄的视频 | 人人干人人操狠狠插 | 特级西西www大胆无码 | 囯产精品国产三级国产AⅤ浪潮 | 丰满老寡妇高潮免费无码 | 亚洲一级日韩一级 | 精品人妻无码一区二区三区古塔尼 | 91久久人澡人人添人人爽欧美 | 正在播放长泽梓无码中出 | 亚洲日韩国产AV无码无码精品 | 黄色十五分钟网站 | 欧美人与ZOXXXX乱叫 | 精品无码国产一区二区三区.闺蜜 | 成人无码区免费A片在线观看 | 蜜桃AV网站无码成人一区 | 中文字幕乱码人妻二区三区 | 国内揄拍国内精品久久 | 2248bb.蜜桃麻豆啪啪视频 | 无码人妻欧美一区二区三区 | 国产Av亚洲AⅤ高潮无 | 欧美国产一区二区三区高清无码 | 毛毛久久久久XXXX | 四川寡妇高潮AAA片毛片 | 蜜桃秘 免费一区二区三区 国产1区2区3区中文字幕 | 亚欧精品无码7777视频 | 性生交大片免费看A片直播 老牛A片在线精品免费观看 | 少妇被又大又粗黑人猛烈欧美 | 午夜精品久久久久久久96蜜桃 |