精品国产产一区二区三区久久,丰满少妇大力进入av亚洲,国产下药迷倒白嫩美女,粗大浓稠硕大噗嗤噗嗤h

歡迎進(jìn)入深圳市錦鴻宇實(shí)業(yè)有限公司官網(wǎng)!
News
NewsNews

Four principles of machining jinhongyu precision mechanical parts

時(shí)間:2023-03-31瀏覽次數(shù):3763

What are the general principles of fine mechanical parts processing? What is the order of processing? I believe this is a topic that all fine processing companies are very concerned about. In simple terms, it can be divided into four principles: benchmark first, division of processing stages, first face and then hole, and smooth processing.


1. Benchmark first


That is, the reference surface is processed first. During the machining process of the part, the surface as the positioning reference should be processed first, so as to provide a precise reference for the subsequent processing as soon as possible.


2. Divide the processing stages


Surfaces with high mechanical processing quality requirements are divided into processing stages, which can generally be divided into three stages: rough processing, semi-finishing and finishing. Mainly to ensure the processing quality of fine mechanical parts; facilitate the scientific application of equipment; facilitate the installation of heat treatment procedures; and facilitate the discovery of blank defects.


3. Face before hole


For parts such as box body, bracket and connecting rod, the plane should be processed first and then the hole should be processed. In this way, the holes can be positioned on the plane to ensure the accuracy of the plane and the position of the hole, and the processing of the holes on the plane is convenient.


4. Finishing


Finishing processing of the main surface, such as grinding, honing, fine grinding, rolling processing, etc., should be placed at the end of the process road. The general guidelines for drawing up fine parts processing technology roads and the formulation of fine parts processing technology regulations can be roughly divided into two links. The first is to draw up the process path of parts processing, and then confirm the process size of each process, the equipment and process equipment used, the cutting standards, and the quota of working hours.

服務(wù)熱線:13631565136
手機(jī):18926579610
電話:0755-26740010
郵箱:senyuanmoju@126.com
地址:廣東省深圳市寶安區(qū)石巖街道水田工業(yè)區(qū)寶石東路123號(hào)7棟1樓

掃一掃關(guān)注我們

老bwbwbwbwbwbwbw| 精品人伦一区二区三区蜜桃小说| 老汉的性生生活1一7| av无码免费岛国动作片| 好姑娘在线观看完整视频高清| 纯爱无遮挡h肉动漫在线播放| 摸进她的内裤里疯狂揉她| 男生把手放进我内裤揉摸好爽| av网站在线观看| 97人妻精品一区二区三区| 公交车被cao到合不拢腿| 亚洲av永久无码精品| 四虎影视免费观看高清视频| 无码精品人妻一区二区三区影院| 蜜臀av在线播放| 老太熟妇性bbwbbwbbw| 被男狂揉吃奶胸60分钟视频| 97国产av传媒视频在线观看| 欧美与黑人午夜性猛交久久久| 草莓视频免费观看| 手机电影在线观看| 亚洲av综合色区无码另类小说| 医生边走边吮男男h| 最美情侣免费观看完整版高清| 欧美性xxxxx极品少妇小说| 国产精品久久久久久久久久妞妞| 娇小w搡bbbb搡bbb| 日本高清视频www| 亚洲gv猛男gv无码男同网站| 人善交videos欧美| 老头在厨房添下面很舒服| 一性一交一伦一片a片庆| 欧美日韩人妻精品一区二区三区| 国产最猛性xxxx69交| 亚洲爆乳无码一区二区三区 | 丰满少妇a级毛片露出偷拍| 男男肠道灌水失禁play| 久久这里只有精品| 人善交videos欧美| 成全动漫视频在线观看免费高清| 日韩一卡2卡3卡4卡|