Automatic advancing type polishing device for inner wall of pipe fitting

Abstract

The invention discloses an automatic advancing type polishing device for the inner wall of a pipe fitting, and relates to the technical field of polishing tools. The automatic advancing type polishingdevice comprises a polishing driving device, a plurality of rotary polishing parts and an advancing device. The polishing driving device comprises a driving motor, a driving bevel gear and a bracketdevice. The rotary polishing parts are uniformly distributed on the circumference taking the center shaft of the driving bevel gear as the axis. The advancing device comprises a screw and a screw through hole formed in the bracket device. According to the automatic advancing polishing device, the polishing driving device drives the rotary polishing parts simultaneously, the whole polishing deviceis driven to automatically advance on the screw under the action of friction force between the rotary polishing parts and the inner wall of a to-be-polished pipe fitting, so that the polishing efficiency of the inner wall of the pipe fitting is greatly improved, and moreover, the polishing precision of the inner wall of the pipe fitting can be improved by increasing the quantity of the rotary polishing parts. The driving motor adopts a single-phase asynchronous motor, the forward and negative rotation of the motor can be frequently controlled, and the high-precision polishing is realized.

Description

technical field [0001] The invention relates to the technical field of grinding tools, in particular to an automatic traveling grinding device for inner walls of pipe fittings. Background technique [0002] At present, one type of steel pipe inner wall grinding equipment at home and abroad is the inner hole boring and grinding machine, which needs to replace different grinding heads when processing steel pipes with different apertures, and the equipment has high cost, many grinding head spare parts, and low productivity; the other is only For the internal and external grinding equipment of the steel pipe end, these two types of steel pipe inner wall grinding equipment have their own limitations; [0003] At present, most manufacturers mainly use manual grinding for the internal grinding of the pipe mouth, that is, the workers use electric or pneumatic grinding machines to grind the outer wall of the pipe first and then the inner wall, so the traditional and backward processi...

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Problems solved by technology

[0007] The problem to be solved by the present invention is to solve the problem of automatic grinding of the inner wall of the pipe fitting by the grinding device in view of the defects of the prior art, and also solve the problems of low grinding efficiency and poor grinding accuracy existing in the prior art; and existing pipe fittings The inner wall grinding device has a large volume and is not convenient to use

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