蜜臀av人妻久久无码精品麻豆,在床上拔萝卜又疼又叫什么病,在线亚洲人成电影网站色www ,国产精品美女久久久久av爽

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):4404
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

久久久婷婷综合五月色麻豆| 小秘书夹得真紧好爽h调视频 | 含着奶头搓揉深深挺进p漫画| 18禁免费吃奶摸下激烈视频| 亚洲b2b网站| 性直播视频在线观看| 艳鉧动漫1~6全集在线观看| 男生女生向前冲第六季| chinese农村老妓女| 廖承宇做受被c22分钟视频 | overflow樱花动漫| 国产99久一区二区三区a片| 人妻丝袜无码国产一区| 人妻 日韩 欧美 综合 制服| 无码无遮挡刺激喷水视频| 美女脱内衣让男生揉摸的视频| 自w到高c的25种方法带图| 奶头挺立呻吟高潮av全片| 交换俱乐部娇妻奶呻吟啊视频| csgo未满十八岁能玩多久| 亚洲国产av精品一区二区蜜芽| 唐舞桐灌满jing液h斗罗h| 老师好大好爽我要喷水了视频 | 欧美特黄A级高清免费大片A片| 中文字幕丰满孑伦无码精品| 杨思敏1一5集未删减| 人体张悠雨全身光一丝不| 日韩人妻精品无码久久上司| 野花香视频在线观看免费| 日本理论片| 亚洲蜜芽在线观看精品一区| 被夫の上司に犯波多野结衣| 国语精彩对白在线视频| 双性喂奶给室友八人攻| 年轻丰满的继牳理伦片中文| 成人亚洲精品777777| 成人午夜特黄aaaaa片男男| 男男惩罚羞耻双腿分打屁股小作文| 57歳の熟女セックス| 性猛交╳xxx乱大交| 清纯校花挨脔日常h|