Super-finishing machining method for inner holes of outer cylinder work-pieces

A technology of shape processing and workpiece, which is applied in the field of superfinishing the inner hole of the outer cylinder workpiece, can solve the problems of low efficiency, difficulty in ensuring product quality, and inappropriate processing of holes with larger diameters, so as to achieve easy manufacturing, reduce production costs, The effect of improving productivity

Inactive Publication Date: 2016-04-27
SHAANXI YIPINDA PETROCHEM CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The rate is low, it is not suitable for processing holes ...

Method used

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Embodiment Construction

[0014] The method for superfinishing the inner hole of the outer cylinder workpiece of the present invention comprises the following steps:

[0015] The first step is to process the shape of the workpiece first, and leave a 0.03mm-0.06mm allowance for finishing after rough turning and fine boring of the inner hole, with a roughness of Ra0.8-0.4um;

[0016] The second step is to screw the external thread of the connecting rod of the super-precision head with the internal thread of the connecting sleeve of the super-precision machine tool;

[0017] In the third step, the outer circle of the small end of the workpiece is positioned and clamped on the three-jaw chuck with the bushing, the outer circle of the large end is supported by the center frame, and the runout of the outer circle of the workpiece is corrected by the dial indicator to less than 0.02mm;

[0018] The fourth step is to rotate the main shaft of the machine tool, and the workpiece will rotate accordingly. Pull the...

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Abstract

The invention relates to the machining field, in particular to a super-finishing machining method for inner holes of outer cylinder work-pieces. The super-finishing machining method comprises the steps of machining the contours of the work-pieces and preserving the super-finishing machining allowance of 0.03-0.06 mm after rough turning and fine boring of the inner holes are completed, wherein the roughness Ra is 0.4-0.8 um; screwing outer threads of a connecting rod of a super-finishing head and inner threads of a connecting sleeve of a super-finishing machine tool; locating and clamping outer circles of the small ends of the work-pieces on a three-jaw chuck through a lining, bearing the outer circles of the large ends of the work-pieces through a center frame, and correcting the jerk value of the outer circles of the work-pieces to be smaller than 0.02 mm through a dial indicator; rotating a main shaft of the machine tool, driving the work-pieces to rotate along with the main shaft and pulling an automatic handle for driving the super-finishing head to move leftwards, wherein a guide sleeve stops moving when touching the end surfaces of the work-pieces, an oilstone strip enters the inner holes of the work-pieces in the advancing direction, the walls of the inner holes are ground peripherally, thick nuts are screwed through a spanner and a cylindrical spring is pressed to push a cylindrical pin. According to the invention, the machining process is simple, manufacturing is easy, the machining quality and the dimensional accuracy of the work-pieces can be guaranteed, the production efficiency can be improved, and the production cost can be lowered.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a superfinishing method for the inner hole of an outer cylinder workpiece. Background technique [0002] In the hydraulic system of a certain military product, there is a self-supply pressurized oil tank, which supplies oil to the hydraulic pump, which can ensure the initial starting inlet pressure of the pump. In order to eliminate the air suffocation of the pump, after the hydraulic pump works, the oil tank is pressurized again, so that the hydraulic pump can obtain a good inlet pressure. The inner hole of the outer cylinder workpiece requires high dimensional accuracy and low surface roughness. If it is processed according to the conventional process, that is, the inner hole of the rough car - the fine boring - the manual grinding hole, this method requires a lot of labor intensity for the workers and a high production efficiency. [0003] The rate is low, it is not suit...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 李长英
Owner SHAANXI YIPINDA PETROCHEM CO LTD
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