Double-end-face grinding machine

Abstract

The invention discloses a double-end-face grinding machine. The double-end-face grinding machine comprises a box body, wherein an upper grinding head part and a lower grinding head part are arranged in the box body, the two grinding head parts are connected with two grinding head feeding mechanisms, the grinding head parts are driven by an electric spindle, and the grinding head feeding mechanisms drive the grinding head parts to move vertically relative to the box body through ball screws and ball nuts, and a grinding wheel replacement window is arranged at the rear part of the box body. According to the double-end-face grinding machine, the high-rigidity large-torque electric spindle is adopted to replace a common mechanical spindle, a variable frequency motor and a synchronous belt structure, the rotating speed of a grinding wheel can be greatly increased, the mechanical structure is simplified, and space is saved; the grinding wheel replacement window is arranged on the rear portion of the box body, a hinge of a feeding seat in front of a machine tool is omitted, the feeding seat is fixedly installed, and automatic feeding is conveniently achieved; and a high-rigidity guide rail and a precision ball screw are adopted, so that a load borne by an original screw from the outside of the spindle is transferred to the high-rigidity guide rail, and the influence of screw abrasion on the feeding precision is reduced.

Description

technical field [0001] The invention relates to a grinding machine, in particular to a double-end surface grinding machine. Background technique [0002] The traditional double-face grinder adopts ordinary grinding head plus external frequency conversion motor driven by belt or synchronous belt, resulting in low speed of grinding wheel and poor dynamic balance. [0003] The frequency conversion motor of the upper and lower grinding heads of the traditional double-end grinding machine is installed at the rear of the machine tool box. The grinding wheel can only be replaced from the front door when the grinding machine is replaced. poor positional accuracy. [0004] The spindle feed drives the grinding head to move up and down through the hollow large-diameter ball screw concentric with the spindle and the worm gear structure. After continuous strong grinding, the screw wears and the spindle feed accuracy becomes poor. Contents of the invention [0005] The technical probl...

AI Technical Summary

Problems solved by technology

[0002] The traditional double-face grinder adopts ordinary grinding head plus external frequency conversion motor driven by belt or synchronous belt, resulting in low speed of grinding wheel and poor dynamic balance

[0003] The frequency conversion motor of the upper and lower grinding heads of the traditional double-end grinding machine is installed at the rear of the machine tool box. The grinding wheel can only be replaced from the front door when the grinding machine is replaced. poor positional accuracy

[0004] The spindle feed drives the grinding head to move up and down through the hollow large-diameter ball screw concentric with the spindle and the worm gear structure. After continuous strong grinding, the screw wears and the spindle feed accuracy becomes poor.

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