一区二区三区av这些免费观看-国内自拍成人福利视频-国产91精品清纯白嫩-在线女同免费观看网站

[Description] how precision machine tool positioning accuracy gear
    Precision Machine Tool gear a name you should know, the focus is precision CNC machine tool positioning accuracy, is the location accuracy of the machine axes to the NC device under control of the movement can be achieved. CNC machine tool positioning accuracy and can be understood as the movement accuracy of machine tools. General machine tools by a manual feed, positioning accuracy depends mainly on reading error, CNC machine tools is moved by a digital program instructions, so the positioning accuracy determined by the numerical control system and mechanical transmission errors. Sports all moving parts are under the control of the NC unit completed, all moving parts under program instruction control achievable precision machined parts directly reflect the achievable accuracy, so that the positioning accuracy is a very important test content.
    Repeat positioning accuracy of each axis is the most basic indicators reflect the accuracy of the shaft, which reflects the stability of the axis motion precision, accuracy can not imagine the difference the machine can be stably used in the production. Currently, the numerical control system function more and more for each sitting ejector mark motion accuracy of systematic errors such as pitch accumulated error, backlash error so the system can be compensated not only random error compensation, and repeatability it reflects the feed drive mechanism integrated random error, it can not be corrected with the numerical control system to compensate, when it is found out of tolerance, only to feed fine-tune the transmission chain correction. Therefore, the machining precision machine tools gear if you allow the machine to choose, you should choose high repeat positioning accuracy of machine tools as well.

Links:
Belt conveyor gear http://jyzdl.com/products-detail.asp?cpid=453
Universal gear gear http://jyzdl.com/products-detail.asp?cpid=442