中文无码一区二区不卡ΑV,欧美人与动性XXXXBBBB,我和公发生了性关系视频,体育生小鲜肉勃起VIDEOS

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

What is precision machining?

時(shí)間:2021-07-01瀏覽次數(shù):4024
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(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7棟1樓

掃一掃關(guān)注我們

色综合久久久久综合99| 999国产精品999久久久久久| 亚洲AV永久纯肉无码精品动漫| 婷婷五月六月激情综合色中文字幕 | 东北妇女肥胖BBWBBWBBW| 男人10处有痣是富贵痣| 凌晨三点看的片WWW高清| 97久人人做人人妻人人玩精品| 久久久久99精品国产片| 啊灬啊别停灬用力啊老师| 亚洲国产一区二区A毛片| 久久久久久综合网天天| 花蜜花液汁水野战高H| 被部长玩的漂亮人妻| 久久99久久99精品中文字幕 | 97精品超碰一区二区三区| 麻豆人妻无码性色AV专区| 人人妻人人澡人人爽精品日本| gogo亚洲肉体艺术欣赏图片| 天干天干天干天干日天干| 人人爽人人澡人人高潮| 夫妇当面交换作爱| 无码色情一区二区在线看| 被黑人扒开双腿猛进| 蜜桃成人毛片免费看视频| 少妇激情出轨100篇| YELLOW日本高清免费中文| 色综合久久中文字幕无码 | 和女H做愛又长又粗| 偷拍中国熟妇乱XXXXX| 最近2019手机中文字幕7| 深灬深灬深灬深灬一点| 国产动作大片中文字幕| 果冻传媒AV毛片无码蜜桃| 色综合久久久久久久久五月| JZZIJZZIJ亚洲成熟少妇| 欧美成人一区二免费视频| 三级黄色视频| 色综合AV综合无码综合网站| 日本熟妇厨房BBW| 少妇久久久久久久久久|