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導(dǎo)軌絲杠的安裝的正確方式是什么?
來(lái)源:http://www.feicui77.cn/ 日期:2021-01-21 發(fā)布人:
數(shù)控機(jī)床的進(jìn)給系統(tǒng)要獲得較高的傳動(dòng)剛度,除了加強(qiáng)滾珠絲杠螺母本身的剛度之外,導(dǎo)軌絲杠正確的安裝及其支承的結(jié)構(gòu)剛度也是不可忽視的因素。
In order to obtain higher transmission stiffness for the feed system of CNC machine tools, in addition to strengthening the stiffness of the ball screw nut itself, the correct installation of the guide screw and the structural stiffness of its support are also factors that can not be ignored.
螺母座、絲杠端部的軸承及其支承加工的不精確性和它們?cè)谑芰χ蟮倪^(guò)量變形,都會(huì)對(duì)進(jìn)給系統(tǒng)的傳動(dòng)剛度帶來(lái)影響。因此,螺母座的孔與螺母之間必須保持良好的配合,并應(yīng)保證孔對(duì)端面的垂直度,在螺母座上應(yīng)當(dāng)增加適當(dāng)?shù)慕畎?,并加大螺母座和機(jī)床結(jié)合部件的接觸面積,以提高螺母座的局部剛度和接觸剛度。
The inaccuracy of the machining of the bearing and its support at the end of the nut seat and the lead screw and their excessive deformation after being forced will affect the transmission stiffness of the feed system. Therefore, it is necessary to keep a good fit between the hole of nut seat and the nut, and ensure the perpendicularity of the hole to the end face. Appropriate ribs should be added on the nut seat, and the contact area between the nut seat and the machine tool joint parts should be increased, so as to improve the local stiffness and contact stiffness of the nut seat.

導(dǎo)軌絲杠的不正確安裝以及支承結(jié)構(gòu)的剛度不足,還會(huì)使?jié)L珠絲杠的使用壽命大為下降。為了提高支承的軸向剛度,選擇合適的滾動(dòng)軸承。
The improper installation of the guide screw and the insufficient stiffness of the supporting structure will also greatly reduce the service life of the ball screw. In order to improve the axial stiffness of the support, the appropriate rolling bearing is selected.
導(dǎo)軌絲杠螺母副僅用于承受軸向負(fù)荷,徑向力、彎矩會(huì)使?jié)L珠絲杠螺母副附加表面接觸應(yīng)力等負(fù)荷,從而可能造成絲杠的性損壞。正確的安裝是有效維護(hù)的前提。
The guide screw nut pair is only used to bear axial load. Radial force and bending moment will cause additional surface contact stress and other loads on the ball screw nut pair, which may cause permanent damage to the screw. Correct installation is the premise of effective maintenance.
安裝時(shí)用芯軸和定位套將兩端支承軸承座及中間絲母座連接在一起校正、用百分表將芯軸軸線與機(jī)床導(dǎo)軌找正平行并芯軸傳動(dòng)自如輕快。
During the installation, the supporting bearing blocks at both ends and the intermediate screw block are connected together with the mandrel and positioning sleeve for correction, and the mandrel axis is aligned and parallel with the guide rail of the machine tool with the dial indicator, and the mandrel drives freely and quickly.
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