Anti-vibration boring head with rotating and fixed cutter head

Abstract

The invention discloses an anti-oscillation boring head with a rotationally-fixed cutterhead. The anti-oscillation boring head comprises the rotationally-fixed cutterhead, a mandrel, a retainer and a plane bearing, wherein the middle of the mandrel is provided with an annular boss a; the cutterhead is fixedly connected to a head disc of the mandrel; the retainer slidably sleeves the annular boss a in the middle of the mandrel; the plane bearing is clamped between the retainer and a screw thread on the outer circumference of the tail end of the mandrel; a spigot which is a cylindrical through hole is also formed in the circle center of a tool rest; a limiting shaft is arranged on a position corresponding to the circle center of the end surface of the mandrel and is inserted to the spigot; and the tool rest is also provided with two locating grooves. According to the anti-oscillation boring head with the rotationally-fixed cutterhead, through changing the fixing way of the cutterhead and the mounting way of a pin roller arranged on the retainer, not only the cutterhead dismounting and mounting time and steps are reduced, but also the retainer is prevented from oscillating in the rotating process, the equipment overhaul and replacement costs of enterprises are reduced, and meanwhile the work efficiency and safety coefficient are increased, so that the anti-oscillation boring head is worthy of popularizing in the industry.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to an anti-vibration boring head for a rotating fixed cutter head. Background technique [0002] In the prior art, the fixing method of installing the cutter head on the front end of the boring head used for processing the inner wall of the tube blank is to fix the cutter head on the mandrel with a square stop and an even number of bolts. When installing and dismounting, it is necessary to first It is time-consuming and labor-intensive to remove the bolts, and then forcefully remove the cutter head horizontally outwards. After the square seam has been used for a period of time, due to wear and tear, it will cause a deviation in the positioning of the cutter head, and this deviation will directly lead to The effect of the cutter head on the cutter head on the inner wall of the tube blank. [0003] The boring head used to process the inner wall of the tube blank generally incl...

AI Technical Summary

Problems solved by technology

If it is necessary to overhaul or replace the rollers during the use of the boring head, it is necessary to remove the entire boring head from the lathe first, then disassemble the open mandrel and cage, and then take out the damaged roller from the inner side of the cage. The whole process is very cumbersome

[0005] When the cage on the boring head drives the roller to rotate, it receives a backward friction force from the inner wall of the tube blank. There is a tolerance between the roller hole and the roller. When the mandrel rotates fast enough, the roller will Vibration occurs in the roller hole, which will cause the roller and the inner wall of the roller hole to collide with each other and damage the smooth roller surface, thereby shortening the service life of the cage and affecting the rolling and polishing of the inner wall of the tube billet by the cage Effect

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