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Grinding method for excircle of inner hole of ultraprecise thin-wall shaft sleeve part

A thin-walled shaft, ultra-precision technology, applied in the direction of grinding workpiece supports, grinding/polishing equipment, machine tools designed for grinding workpiece rotating surfaces, etc., can solve problems such as clamping deformation, and solve the problem of clamping deformation Effect

Inactive Publication Date: 2017-05-10
北京实验工厂有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of clamping deformation during the inner hole / cylindrical grinding of ultra-precision thin-walled bushing parts, which is used for the inner hole of ultra-precision thin-walled bushing parts. Cylindrical Grinding Method

Method used

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  • Grinding method for excircle of inner hole of ultraprecise thin-wall shaft sleeve part
  • Grinding method for excircle of inner hole of ultraprecise thin-wall shaft sleeve part
  • Grinding method for excircle of inner hole of ultraprecise thin-wall shaft sleeve part

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Experimental program
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Effect test

Embodiment

[0051] Tooling design for precision grinding of thin-walled bushing parts with stepped holes (typical parts bearing outer ring)

[0052] 1) Tooling body

[0053] Such as Figure four As shown, the ФA circle is the clamping part of the machine tool, which is connected to the machine tool spindle through the three-jaw chuck. The length of L1 is about 25-30mm; the circle ФC is the part of the grinding wheel, and the length of L2 is about 3-5mm; the circle ФB is the grinding inner hole When the parts are positioned, the specific dimensions of ФA, ФB, ФC, L3 and the two threads need to be determined according to the actual size of the parts.

[0054] The main material of the tooling is made of 45# steel, and the processing is completed by one-time clamping on a precision lathe to ensure the coaxiality of the structure of each part of the main body of the tooling, thereby ensuring the grinding accuracy of the parts.

[0055] 2) threaded quilt female

[0056] Cooperate with the ex...

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Abstract

The invention belongs to the technical field of machining, and particularly relates to a grinding method for the excircle of an inner hole of an ultraprecise thin-wall shaft sleeve part. The grinding method comprises the following steps that 1, a main tool body is connected to a grinding machine through a three-jaw chuck; 2, a threaded nut for the part is fixed to the main tool body; 3, the inner hole of the part is aligned through a lever indicator and accurately ground to reach the drawing size; 4, an existing clamping mode is kept consistent, and the part and the main tool body are fixed with a countersunk bolt and a gasket; 5, the threaded nut is screwed off, and the excircle of the part is accurately ground to reach the drawing size; and 6, the countersunk bolt and the gasket are disassembled, the part is taken down, and accurate grinding machining is completed.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for grinding the inner hole and the outer circle of ultra-precision thin-walled shaft sleeve parts. Background technique [0002] Thin-walled shaft sleeve parts are common structural components in servo mechanisms, typical parts such as bearing outer rings, bearing inner rings, shaft sleeves, etc. Due to the requirements of assembly and transmission stability, the inner / outer ring outer circle and the inner hole of the bearing are required to have extremely high dimensional accuracy, shape and position tolerance and surface roughness. The main dimensional parameters of the parts are shown in the figure. [0003] As shown in the figure, the size of the outer circle of the bearing outer ring is Ф17, the cylindricity is 0.005, and the roughness is Ra0.4. 05, wall thickness 1.4mm; inner hole size of bearing inner ring is Ф15, cylindricity 0.005, ro...

Claims

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Application Information

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IPC IPC(8): B24B5/48B24B5/04B24B41/06
CPCB24B5/48B24B5/04B24B41/067
Inventor 张红英张中王晓晨王德志高嘉
Owner 北京实验工厂有限责任公司