Numerical control machine tool spindle box system with indexing mechanism

Abstract

The invention discloses a numerical control machine tool spindle box system with an indexing mechanism. The numerical control machine tool spindle box system comprises a box body and a main shaft andfurther comprises a main shaft indexing device, a bearing sealing system, a bearing pre-tightening and anti-backlash device and a bearing lubricating system. According to the spindle box system, a driving friction wheel with the position capable of being adjusted up and down is used for driving a driven friction wheel to rotate, and the rotation angle of the main shaft is controlled through a stepping motor or an angle sensor, so that indexing is accurate, the indexing operation is simple and convenient, and the cost of an indexing device is low; the bearing sealing system of the spindle box system can play dustproof and anti-fouling roles on a bearing and also can play a role in cooling the inner ring on the bearing and the main shaft, the rigidity of the main shaft and the inner ring ofthe bearing can be improved, and the rotating precision of the main shaft can be kept; and the bearing pre-tightening and anti-backlash device can automatically eliminate a gap generated by bearing abrasion so that the rigidity of a first deep groove ball bearing and the rigidity of a second deep groove ball bearing can be greatly enhanced, the rigidity of the main shaft system can be greatly improved, and the rotating precision of the main shaft and the machining precision of machine tools can be improved.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to a spindle box of a numerically controlled machine tool. Background technique [0002] The spindle box is an important part of the machine tool, which includes a box body, a spindle component, and the like. Main shaft components are usually composed of main shaft, bearings and transmission parts (gears or pulleys). In the machine tool, the main shaft is mainly used to support transmission parts such as gears and pulleys, to transmit motion and torque, to drive the workpiece or tool to rotate, etc. It is used as a CNC machine tool for high-precision machining, and the quality requirements for the main shaft components are very high. [0003] During the processing of the machine tool, the radial force of the spindle is large, but the axial force is relatively small, so the radial bearing supporting the spindle is very critical. In the prior art, deep groove ball bearings are...

AI Technical Summary

Problems solved by technology

[0009] In view of this, the purpose of the present invention is to provide a CNC machine tool headstock system with an indexing mechanism, to solve the technical problems of high cost and complicated operation of the mechanical indexing device used for the existing spindle indexing, and to solve the problem of bearing clearance , Bearing wear, bearing and spindle temperature rise and other technical problems that lead to reduced machining accuracy of machine tools

Images