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

What is precision machining?

時(shí)間:2021-07-01瀏覽次數(shù):4409
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(hào)7棟1樓

掃一掃關(guān)注我們

欧美日韩国产| 与亲女洗澡时伦了| 男男开小嫩苞好深啊h窑子开| 无码gogo大胆啪啪艺术| 女人和公豬交内谢| 国产成人精品三上悠亚久久| 荫蒂每天被三个男人添小说| 开丫头小嫩苞疼死了| 亚洲午夜无码久久久久| 成av人片一区二区三区久久| 欧美一区二区三区成人片在线| 偷看各类wc女厕嘘嘘近距离| 诱人的大乳bd在线观看| 99久久蜜av毛片毛片正在| 欧洲尺码日本尺码专线美国特价| 99精品欧美一区二区三区| 国产国语老龄妇女a片| 国产麻豆精品一区二区三区V视界| 国产成人无码av片在线观看| 粗大挺进粉嫩紧窄女朋友小说| 国产亲妺妺乱的性视频播放| 全球欧美hd极品4k| 国产精品污www在线观看| 含着奶头搓揉深深挺进| 国产aⅴ激情无码久久久无码| 免费网禁拗女资源网视频| 国产精品99久久久久久擦边| cekc妇女毛多啊bn| 97人人爽人人爽人人人片av| 国产艳妇av在线观看果冻传媒| 久久av色欲av久久蜜桃麻豆| 疯狂做受xxxx国产| 人妻小慧办公室沉伦全文番外篇| 里番本子纯肉侵犯肉全彩无码| 女技师强制高潮xxxx按摩| 学生姝被内谢出白浆| 岳的大肥坹视频hd| 国产特黄a片aaaa毛片| 久久久久成人精品免费播放动漫 | 精品欧美一区二区三区成人片在线 | 男男色情gay浴室激情|