Quick cutter feeding/retreating and constant-pressure feeding mechanism

Abstract

The invention relates to the technical field of machining, in particular to a quick cutter feeding / retreating and constant-pressure feeding mechanism. The mechanism comprises a slideable feeding carriage, a screw speed reducer, a feeding hand wheel mechanism, a buffer device and an air-pressure transmission system; one end of the feeding carriage is connected with the air-pressure transmission system, and the other end of the feeding carriage is connected with a second buffer; the second buffer tightly presses a screw of the screw speed reducer when a cutter enters a machining station; the air-pressure transmission system includes a cylinder and an air-pressure transmission control system; a first buffer is arranged at the head part of a cylinder body of the cylinder; the outer end of a piston rod is rigidly connected with the feeding carriage; the air-pressure transmission control system includes an air compressor, a pressure relief valve, a two-position five-way valve and a one-way throttling valve module connected in sequence; and an input shaft of the screw speed reducer is connected with the feeding hand wheel mechanism. The quick cutter feeding / retreating and constant-pressure feeding mechanism adopts a mode of combining mechanical feeding with the air-pressure transmission system to realize quick cutter feeding and retreating, guarantees repeated positioning precision of quick movement of the feeding carriage, and meanwhile, realizes constant-pressure feeding in cutter machining.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering, in particular to a rapid advance and retreat knife and constant pressure feed mechanism. Background technique [0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinding machines use high-speed rotating grinding wheels for grinding, and a few use other abrasive tools such as oil stones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machine tools, abrasive belt grinders, grinding machines and polishing machine etc. The traditional tool grinding machine adopts the mechanical structure of the feed hand wheel and the feed screw to complete the process of the workbench and the tool from the measurement, the tool change position to the sharpening position and the tool feeding. Usually the tool measurement, the tool change position to the grinding position The distance between the tool po...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a mechanism of rapid advance and retreat and constant pressure feed, which is used to solve the problem that the existing tool grinder cannot realize the function of rapid advance and retreat with high repeat positioning accuracy, and also cannot realize the constant pressure feed during tool grinding

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