免费a级毛片出奶水,一本一道波多野结衣AV中文,熟女少妇精品一区二区 ,丰满人妻熟妇乱又伦精品

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

What is precision machining?

時間:2021-07-01瀏覽次數(shù):4345
Fine machining is a kind of machining, which is a machining process in which the workpiece meets the position tolerance required by the drawing. When the workpiece undergoes this process, its performance characteristics and appearance structure will change to a certain extent.


With mechanical processing, there will naturally be corresponding parts. As a discipline of mechanical majors, mechanical parts design is one of the most sought-after majors for liberal arts students, and it is also one of the most representative engineering disciplines; at present, this major Not only good science and engineering knowledge is required, but also excellent drawing ability and spatial imagination ability. And due to the development of domestic industry and the changing demand from time to time, the requirements for personnel in the machining industry are also increasing from time to time. The employment rate of mechanical majors can be improved. Reach 95%.


With the development and progress of domestic industries, machining has changed a lot, and fine machining technology has also emerged. Many industries such as home appliances, automobiles, hardware, and products used in medical manufacturing more or less use fine parts. It may be just a component, or it may be a central component of a mechanical device. All in all, it is very important and plays an irreplaceable role.


There are two processes for fine mechanical processing and manufacturing of these fine parts, one is hot processing and the other is cold processing, and hot processing involves heat treatment and other methods to make the parts undergo chemical or physical changes under very warm conditions to meet the requirements of shape changes. . For cold working, there is no chemical and physical change at room temperature to meet the requirements of shape change, and cutting technology is generally used. In the future, under the premise of satisfying processing and environmental protection, fine mechanical processing will be separated from technology and become an important and sustainable science.


Can you really understand what the finely machined non-standard parts are?


Non-standard parts, I believe that the machinery manufacturing industry has the most contact and demand. Most of the specifications and parameters of the parts in the automation equipment or the jigs used in processing and inspection tools are controlled by the enterprise. Therefore, such companies will hand over the drawings of the required parts to the corresponding fine machining manufacturers for processing to meet the geometric tolerances required by the drawings.


From the above text, we can draw a vague concept. Non-standard parts are related to standard parts. It does not have the standardized structure, size, logo and drawing method like standard parts. Non-standard parts mainly The country has not set strict standard specifications, there are no relevant parameter rules, and the accessories are freely controlled by enterprises according to their own needs. Therefore, at a certain level, the processing cost is higher than the standard parts.


At present, there is no standard classification of non-standard parts. They are roughly classified into metal non-standard parts and non-metal non-standard parts according to their materials. Metal parts are the original materials of metals, such as brass, aluminum, etc., and tolerance requirements and brightness are determined by Customer rules, complicated procedures, non-metal parts, that is, the original materials are plastic, wood, stone, etc.

服務(wù)熱線:13631565136
手機: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7棟1樓

掃一掃關(guān)注我們

丁香花视频在线观看| 97免费人妻在线视频| 最近中文字幕视频高清在线看| 久久久久久综合网天天| 亚洲一久久久久久久久| 国产亚洲精品久久久久久久| 亚洲欧美综合在线一区| 全免费A级毛片免费看视频| 亚洲综合色丁香婷婷六月图片| 88国产精品欧美一区二区三区| 国产精品嫩草影院av| 小雪被老外黑人撑破了视频| 中文字幕人妻中文av不卡专区| 国产精品亚洲精品日韩已方| 久久婷婷五月综合色奶水99啪 | 激情五月色综合国产精品| 精品一区二区三区在线视频| 欧洲人妻丰满AV无码久久不卡| 吸咬奶头狂揉60分钟视频| 一本色道久久hezyo无码| 亚洲线精品一区二区三区影音先锋| 久久er99热精品一区二区| 国产在线国偷精品产拍| 久久久国产精品免费a片分环卫| 17岁日本高清免费观看完整版| 男男做爰猛烈高潮在线观看| 日本一本午夜在线播放| 免费国产黄网站在线观看视频| 女人18毛片a片久久18软件| 欧美成人精品A∨在线观看| 电梯里吸乳挺进我的身体视频| 亚洲国产综合久久久精品| 人妻体内射精一区二区三区| 国产一区二区三区成人欧美日韩在线观看 | 亚洲av激情无码专区在线播放| 日产乱码一二三区别免费一| 亚洲va国产va天堂va久久| 丰满人妻被中出中文字幕| 欧美老妇牲交videos| 一本久道久久综合狠狠爱| 欧美又大又粗无码视频|