Spindle feeding device of double-plane grinding machine

Abstract

The invention relates to the technical field of mechanical processing, in particular to a spindle feed device of a double-surface grinding machine. The spindle feeding device of the double-surface grinding machine includes a spindle box, a spindle located in the spindle box, a trapezoidal screw supporting the rotation of the spindle, and a trapezoidal nut that cooperates with the external thread of the trapezoidal screw. The end of the upper bearing is provided with an upper shaft. The end of the lower bearing is provided with a lower axial locking piece, so that the main shaft and the trapezoidal screw are relatively fixed in the axial direction; a trapezoidal nut is provided on the outside of the trapezoidal screw, and since the outer side of the trapezoidal screw is provided with a guide key , the fixed seat is provided with a guide keyway matching with the guide key, and the trapezoidal screw rod moves up and down under the control of the guide key under the drive of the trapezoidal nut, so as to realize the grinding and feeding movement of the spindle when the headstock is fixed , its compact structure, stable operation, high motion accuracy and positioning accuracy.

Description

Technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a spindle feed device of a double-surface grinder. Background technique [0002] At present, most of the feed devices on CNC machine tools use ball screw and linear guide device. The two ends of the screw are fixed and supported on the box body, the headstock is fixedly connected with the nut, and the headstock is fixed with the slider in the linear guide. The motor drives the screw rod to rotate, the nut makes a linear motion, and the spindle box follows the nut to make a linear feed motion along the slider, so that the rotary motion is converted into a linear motion. [0003] However, for the double-surface grinder, the diameter of the grinding wheel is large, the angle of the grinding wheel needs to be adjusted during grinding, and the box space is limited, so it is not suitable for the ball screw and linear guide device. How to fix the spindle box and enable the spindl...

AI Technical Summary

Problems solved by technology

[0003] However, for the double-surface grinder, the diameter of the grinding wheel is large, and the angle of the grinding wheel needs to be adjusted during grinding, and the space of the box is limited, so it is not suitable for the ball screw and linear guide device. How to fix the headstock so that the spindle can Rotation and linear movement with the screw have become the difficulty and focus of the development of double-surface grinders

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