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Method and apparatus for determining center of casting impeller

An impeller and theoretical center technology, applied in the field of machining and manufacturing parts in the mechanical field, can solve problems such as product scrap, impeller dynamic balance cannot meet requirements, and it is difficult to accurately determine the actual center of the impeller, etc., to improve accuracy and improve yield. Effect

Inactive Publication Date: 2014-06-04
NANJING AUTOMOBILE GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the impeller casting is completed, it is often difficult to accurately determine the actual center of the impeller during finishing machining, and the dynamic balance of the processed impeller cannot meet the requirements, resulting in a large number of scrapped products

Method used

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  • Method and apparatus for determining center of casting impeller
  • Method and apparatus for determining center of casting impeller

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Embodiment Construction

[0011] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] A method for determining the center of a casting impeller, select a movable wedge with the same shape and angle as the blade of the impeller; the movable wedge is installed on an adjustable and movable support frame; manually adjust the adjusting screw so that the position of the movable wedge is in line with the The impeller fits completely and the workpiece is clamped; the stylus slides left and right in the center reference groove to draw a theoretical center line on the workpiece; loosen the workpiece and turn the workpiece so that the workpiece rotates at an angle and fits closely with the movable wedge. Clamp the workpiece, draw another theoretical center line on the workpiece, and the two theoretical center lines intersect at one point; repeat the above steps of rotating the workpiece angle to draw the theoretical center line; t...

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Abstract

The invention discloses a method and an apparatus for determining the center of a casting impeller. The apparatus comprises two supports (1), and guide bars (2) horizontally penetrate through the two supports (1). An adjustment screw (3) is arranged to pass through the supports (1) in the middle. A movable wedge block (4) cooperating with a work piece (8) is disposed on the upper part of each support (1), and a cross bar (6) horizontally passing through the two supports is arranged above the wedge blocks (4). A central reference slot (5) is arranged in the cross bar (6), and a marking needle (7) can slide to the left and the right in the central reference slot (5). A plurality of theoretical central lines are marked on a casting impeller by means of the marking needle. Intersection points of the plurality of theoretical central lines form an intersection point zone, and a point in the zone is picked as the center of the casting impeller for carrying out subsequent finishing. According to the technical scheme, the number of unqualified products can be minimized, and the yield is maximized.

Description

technical field [0001] The invention relates to the field of processing and manufacturing parts in the mechanical field, in particular to a method and a device for determining the center of cast impellers. Background technique [0002] Some high-speed impellers require stable operation, low vibration, and high dynamic balance requirements. These impeller blanks are generally casting blanks, which can only be put into use after finishing and passing the dynamic balance test. After the impeller casting is completed, it is often difficult to accurately determine the actual center of the impeller during finishing machining, and the dynamic balance of the processed impeller cannot meet the requirements, resulting in a large number of scrapped products. Therefore, the actual center of the impeller casting must be accurately marked before processing for finishing use, minimizing unqualified products and increasing the yield. Contents of the invention [0003] The invention p...

Claims

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Application Information

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IPC IPC(8): G01B5/00
Inventor 王志毅
Owner NANJING AUTOMOBILE GROUP CORP
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