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Positioning fixture for high-precision honing of inner hole of valve pocket

A technology for honing processing and positioning fixtures, which can be used in honing machine tools, manufacturing tools, metal processing equipment, etc., and can solve problems such as low efficiency

Inactive Publication Date: 2013-05-01
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

[0006] 3. The final processing of the hole is carried out manually, which is inefficient

Method used

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  • Positioning fixture for high-precision honing of inner hole of valve pocket

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0018] The present invention includes a base 1, a pair of uprights 2, a pair of positioning sleeve pins 3, a pair of pins 11 of the clamping body, a pair of handwheels 4, a positioning sleeve 7, four roller nail bearings 10, a clamping body 9, a positioning pallet 14, Fastening screw 12 and valve sleeve positioning pin 13.

[0019] The bottom of clamp body 9 is fixedly connected with positioning pallet 14 by screws 15 . The positioning sleeve 7 is uniformly provided with four radially extending through-holes along the circumferential direction, and the four nail bearings 10 are respectively pressed into the four through-holes to be fixed with the positioning sleeve 7 . The positioning sleeve 7 is set outside the clamp body 9, and a pair of clamp body pins 11 are respectively inserted into the two roller nail bearings 10 oppositely arranged am...

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Abstract

The invention relates to a positioning fixture for high-precision honing of the inner hole of a valve pocket. A positioning sleeve is sheathed outside a fixture body. The positioning sleeve is circumferentially and evenly provided with four through holes which extend along the radial direction. Four needle bearings are respectively fixed in the four through holes. A pair of fixture body pins are respectively inserted into two oppositely arranged needle bearings of the four needle bearings, stretch into the fixture body and are fixed with the fixture body. A pair of hand wheels are respectively inserted into a pair of stand columns and are fixed with the stand columns. A pair of positioning sleeve pins are respectively inserted into the pair of hand wheels, are fixed with the hand wheels and stretch into the other two oppositely arranged needle bearings of the four needle bearings. The bottom of the fixture body is fixedly connected with a positioning supporting plate. The pair of stand columns are fixedly arranged on a base. The positioning fixture additionally comprises a fastening screw and valve pocket positioning pins, wherein the fastening screw stretches into the fixture body, is fixed with the fixture body and is axially provided with through holes; and the valve pocket positioning pins are arranged in the through holes in a penetrating way. The positioning fixture has the advantages that the accurate positioning effect can be realized and the application scope is very wide.

Description

technical field [0001] The invention relates to a positioning fixture for high-precision honing of the inner hole of a valve sleeve, in particular to a positioning fixture for high-precision honing of the inner hole of a valve sleeve, which can realize accurate positioning and has a wide application range. Background technique [0002] At present, the processing of the inner hole of the valve sleeve can be roughly divided into the following processes: 1. Processing of the bottom hole of the valve sleeve, using gun drilling to drill the bottom hole of the valve sleeve and leaving a semi-finishing and finishing allowance; 2. Bottom hole of the valve sleeve Semi-finishing, the method of reaming the hole with a reamer is used to improve the cylindricity and smoothness of the hole, and prepare for the subsequent finishing work; 3. Heat treatment of the valve sleeve to increase the hardness; 4. Finishing of the bottom hole of the valve sleeve, using grinding or expanding The metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B33/10
Inventor 杨增辉丁忠军田丽君徐迅
Owner 北京实验工厂有限责任公司
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