亚洲第一网色综合久久红第一,玩弄人妻少妇500系列视频,proxxon是国产,人妻大战黑人白浆狂泄

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):4385
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

麻花豆传媒剧国产mv的特点| 一边摸一边脱一边吃胸亲| 最近中文2019字幕第二页| 国产农村又大又粗A片| 成品网站W灬源码三叶草下载| 日本熟妇毛茸茸| 国产精品户外野外| 精品无码AV一区二区三区| 337P日本欧洲亚洲大胆张筱雨| 故意穿暴露被强好爽H漫画| 久久国产精久久精产国| 超碰97久久国产精品牛牛| 精品亚洲AV无码国产一区在线| 成A人片亚洲日本久久| 欧美大胆a级视频免费| 国产永久免费CRM系统| 狠狠躁夜夜躁人人爽野战天天| 精品无码国产一区二区三区51安| 久久99久久99精品中文字幕| 粉嫩小泬无遮挡久久久久久| 奶头被民工吸的又大又黑| 日本又色又爽又黄的A片吻戏| 全免费A级毛片免费看网站| 国自产拍偷拍精品啪啪| 国产精品H片在线播放| 久久精品国产亚洲AV麻豆蜜芽| SM调教室虐男受调教H打开腿| 国产精品多P对白交换绿帽| 18款禁用免费安装的软件app| 欧美性XXXXX极品少妇小说| 精品国偷自产在线视频| 和子发生了性关系的免费视频| 夜鲁鲁鲁夜夜综合视频欧美| 无码粉嫩小泬无套在线观看A片| 色五月丁香六月欧美综合| 娇妻当着我的面被4P| 欧美mv日韩mv国产网站| 不断作死后我成了白月光| 亚洲av久久无码| 欧美日韩中文国产一区发布| 小SAO货水好多真紧H无码视频|