国产精品一区二区三区在线播放,开心激情网站,白洁少妇陈三52章,伊甸园精品99久久久久久

Online Service
Scan it
Support hotline
18681482740
Service Hotline:
18681482740
中文  |   English
Industry knowledge
Contact

Address: Floor 1, Building 2, Quanshengchang Industrial Park, Buyong Shajing Road, Shajing Street, Shenzhen

Contact: Mr. Li 18681482740

Email: lilinhan1314@126.com

Website: f4wow.cn

Industry knowledge
Processing requirements for precision stretching and stamping parts
07-26 / 2024

Precision stretch stamping parts are common accessories in hardware tools, so what are the processing requirements for them?


1. The shape of precision stretching and stamping parts should be as simple and symmetrical as possible: in the circumferential direction, axisymmetric stretching parts will undergo uniform deformation, and the mold used at this time is also relatively easy to process, and the processability is also the best. For stretched parts of other shapes, try to avoid sharp contour changes as much as possible. For example, the rear cover of a car muffler, while ensuring usage requirements, will simplify its shape and transform the production process from multiple processes to one to two processes, reducing material consumption by half.


2. The size ratio of each part of precision stretching and stamping parts should be appropriate: it should be avoided to design flanges and deep stretching parts as much as possible, as such parts require more stretching times. For example, the difference between the upper and lower dimensions of the workpiece is too large, which does not meet the requirements of the stretching process. To make it composite, it can be divided into two parts, processed and manufactured separately, and then connected. If the workpiece cavity is not deep, but the flange diameter is large, the manufacturing difficulty is also great, and annealing treatment is needed in the middle. If the flange diameter is reduced, intermediate annealing can be avoided. The contour of the workpiece flange should preferably be similar to the contour shape of the deep drawn part. If the width of the flange is not consistent, it will not only be difficult to stretch, but also require additional processes. It is also necessary to relax the edge cutting allowance and increase metal consumption.


3. The fillet radius of precision stretching and stamping parts should be appropriate: in order to facilitate forming and reduce the number of drawing times, the fillet radius of the stretching part should be increased as much as possible. The fillet radius between the bottom and wall of the stretched part, the flange and wall, and the four walls of the rectangular part must meet the requirements.


4. The uneven thickness phenomenon of precision stretching stamping parts should be considered: the inner and outer walls of the workpiece that has been stretched multiple times or the flange surface of the stretched parts with flanges should allow for imprints generated during the stretching process. Unless there are special requirements for the workpiece, shaping or shaping methods can be used to eliminate these marks.


5. The hole positions on precision stretching and stamping parts should be reasonably arranged: set the hole positions on the main structural surface of the stretching part to maintain it in a plane, or make the hole wall perpendicular to the plane, so that punching and trimming can be completed simultaneously in one process.




6. Selection of stretching oil: In addition to considering the lubricity and cooling properties of stretching oil, the rust resistance, cost, and ease of maintenance of stretching oil should also be considered in the selection of stretching oil. Stretch oil is easy to use base oil with relatively low viscosity and add wear reducing additives, which can achieve lubrication and friction reduction, as well as good cooling and easy filtration. However, the problem with stretching oil is its low flash point, high temperature during stamping forming, easy deformation, high risk factor, and fast volatilization, resulting in higher user usage costs. Therefore, it is recommended to choose stretching oil with high compressive and wear resistance when conditions permit.





7. The dimensional accuracy of precision stretching and stamping parts should not be too high: the manufacturing accuracy of stretching parts includes the accuracy in the diameter direction and the accuracy in the height direction. In general, the accuracy of precision stretching and stamping parts should not exceed the specified values. The dimensions on the product drawing need to be indicated to ensure external or internal dimensions, and cannot be marked with both internal and external dimensions.


Links:Zibo CNC machine tool automatic car washing machine Qingdao refrigeration equipment grinder equipment steel grit fire inspection cabinet sweeper motor desulfurization denitrification equipment drawing mold washing machine automatic soldering machine server repair HART475 hand operator dust-free cloth dust-free paper stack screw type Sludge dehydration machine, precision repair welding machine, Shandong motor repair, rotary hot pot equipment, integrated ultrasonic cleaning machine, Zhongjie radial drilling machine, beer equipment, Shenzhen brass manufacturer, welcome lamp, lens digging, drilling rig, aluminum housing manufacturer, automatic dispensing machine, automatic screwing machine neodymium Iron boron magnet 4g router wireless bridge
We provide you with high quality products
日韩影院中文字幕| 欧美日韩欧美日韩性生活视频| 午夜亚洲一区二区观看| 日韩 麻豆 一区| 国产一三五六七八九区| 亚洲欧美日本怡红院| 95熟妇精品在线视频| 亚洲大片一区二区三区跳转| 日韩喷奶少妇| 铁力市| 中文字幕影音先锋啪啪视频| 爽歪歪在线综合网| 欧美视频网在线观看| 丝袜黄片国产一牛| 肉棒插入抽出视频在线观看| 日韩精品一区二区AV片在线观看| 护士制服内射| 狠狠干 人妻| 波多野结衣搜索2区| 在线视频福利日韩UC| 开心色999XXX| 天天操小屄视频| 亚洲综合色欲欧美国产一区四季| 木下凛凛子国产AV二区| 插逼网站免费播放| 亚洲精品在线二区三区| www女插| 正在播放操美女| 好想被操,大逼好舒服动态视频| 视频一区在线观看中文字幕视频| 色五月色婷婷姐姐| 日韩精品一区二区三区99| 美国A一区二四| 国产一区二区三区女人碰水网站| 操插人妻av| 男人操女生大鸡巴网站在线观看| 操小骚逼的视频| 嗯免费观看视频嗯嗯| 景谷| 男的操女的操到爽的视频| 欧美精品一区 熟女|