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摘 要
數(shù)控機(jī)床進(jìn)給傳動系統(tǒng)是數(shù)控機(jī)床的重要的組成部分，本次設(shè)計(jì)的數(shù)控機(jī)床進(jìn)給傳動系統(tǒng)主要由升降臺傳動系統(tǒng)、床鞍傳動系統(tǒng)、工作臺傳動系統(tǒng)部分三部分組成。升降臺運(yùn)動由伺服電機(jī)驅(qū)動，電機(jī)置于升降臺內(nèi)，電機(jī)通過一對圓弧齒形皮帶輪及皮帶傳遞動力。床鞍運(yùn)動由伺服電機(jī)通過一對圓弧齒形皮帶輪、皮帶、一對消隙齒輪和滾珠絲杠副降速傳動；工作臺運(yùn)動由伺服電機(jī)通過兩個圓弧齒形皮帶輪，和圓弧齒形皮帶降速傳動。
在本次設(shè)計(jì)的進(jìn)給傳動系統(tǒng)中，伺服電機(jī)通過同步齒形皮帶和滾珠絲杠相聯(lián)，編碼器將工作臺的實(shí)際位移信號傳遞給控制系統(tǒng)，屬于開環(huán)控制。數(shù)控機(jī)床的進(jìn)給傳動系統(tǒng)是通過伺服進(jìn)給系統(tǒng)來控制工作。伺服進(jìn)給系統(tǒng)的作用是根據(jù)數(shù)控系統(tǒng)傳來的指令信息，進(jìn)行放大以后控制執(zhí)行部件的運(yùn)動，不僅控制進(jìn)給運(yùn)動的速度，同時還要精確控制刀具相對于工件的移動位置和軌跡。
關(guān)鍵詞：進(jìn)給系統(tǒng)，伺服系統(tǒng)，齒形皮帶輪，滾珠絲杠，伺服電機(jī)
ABSTRACT
CNC machine tool for CNC machine drive system is an important component of the design of the NC machine tool to the main transmission system from the transmission lifts, saddle-drive system, Stage three of transmission components. Movement by lifting platform servo motor, motor placed lifts, Electrical arc through a tooth belt and pulley transmission power. - On the campaign servo motor through a pair of circular tooth pulleys, belts, one pair of anti-backlash gear and ball screw deceleration drive; worktable campaign by servo motor through two circular tooth pulleys and belts velocity profile circular drive.
In the current design of the feed drive system, servo motor through the synchronous belt and ball screw associates, Encoder will table the actual displacement signal transmitted to the control system is open-loop control. NC Machine Tool Feed transmission is through feed servo control system to work. Servo system of up to the role of the NC system came under the command of information, Click for control of the implementation of parts after the campaign, not only controlling the feed of the speed, while precision control tool in relation to the movement of the workpiece location and trajectory.
Key words : feed system, servo system, Profile Pulley, Ball Screws, Servo motor
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