A knife advance and retreat mechanism for end surface bevel processing equipment

Abstract

A tool feeding and relieving mechanism used for an end face groove preparation device comprises a cutter, a tool apron and a drive assembly for driving the tool apron to move in the radial direction of the cutter. The tool apron comprises a first tool apron body and a second tool apron body. The tool feeding and relieving mechanism further comprises an axial double-faced rack, a first gear, a second gear, a first radial rack and a second radial rack, wherein the axial double-faced rack extends forwards and backwards and penetrates the center position of the tool apron; the first gear and the second gear are fixed to the tool apron and are engaged with the two sides of the axial double-faced rack correspondingly; the first radial rack is connected with the first tool apron body and engaged with the first gear; and the second radial rack is connected with the second tool apron body and engaged with the second gear. The rear end of the axial double-faced rack is connected to the drive assembly and is driven by the drive assembly to move forwards and backwards so that the synchronous movement of the first tool apron body and the second tool apron body in the radial direction of the cutter can be driven. According to the tool feeding and relieving mechanism, the groove preparation efficiency is effectively improved through double-tool cutting, the feed speed of the tool apron can be controlled in real time, and the tool feeding and relieving mechanism is more suitable for groove preparation of pipes with thick pipe walls.

Description

technical field [0001] The invention relates to the technical field of pipe bevel processing equipment, in particular to an advancing and retreating knife mechanism of end face bevel processing equipment. Background technique [0002] The advance and retreat knife mechanism of the existing pipeline end face beveling machine includes a square guide mechanism, a bevel gear advance and retreat knife mechanism, and the like. Among them, the guide block of the square guide mechanism is difficult to manufacture, and the symmetry and parallelism are difficult to guarantee, which directly affects the accuracy of the knife advance and retreat; the bevel gear advance and retreat mechanism uses two bevel gears to achieve the function of right-angle reversing, and needs to be set. Connect the drive shaft to the coupling to realize the function of advancing and retreating the knife. However, during the cutting process, the universal coupling cannot perform rigid transmission, and the cu...

AI Technical Summary

Problems solved by technology

Among them, the guide block of the square guide mechanism is difficult to manufacture, and the symmetry and parallelism are difficult to guarantee, which directly affects the accuracy of the knife advance and retreat; the bevel gear advance and retreat mechanism uses two bevel gears to achieve the function of right-angle reversing, and needs to be set. Connect the drive shaft to the coupling to realize the function of advancing and retracting the knife

However, during the cutting process, the universal coupling cannot perform rigid transmission, and the cutting force repeatedly impacts the bevel gear. The bevel gear assembly is easily damaged, and the replacement and maintenance are more complicated, which affects production.

[0003] In addition, the Chinese patent CN104786088 A discloses a beveling machine advance and retreat mechanism, which uses a rack and pinion to cooperate to realize the advance and retreat knife, but the beveling machine using the above-mentioned advance and retreat mechanism can only use single-blade cutting. For pipes, the processing time is long and the efficiency is low

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