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Method for measuring profile tolerance of large-size mortise on small-diameter projector

A technology of projector and profile, which is applied in the field of mechanical processing, can solve the problems of affecting the detection efficiency and high cost of parts

Inactive Publication Date: 2011-05-25
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
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Problems solved by technology

[0002] At present, to detect the profile of the tongue and groove of aero-engine disk parts, it is usually used to enlarge the projection of the profile of the tongue and groove by 20 times or 50 times, and then compare it with the same enlarged tolerance zone diagram of the profile of the tongue and groove; for those with high profile requirements Parts, when performing projection inspection on the contour of a large-sized tenon and groove, after the projection of the contour of the tenon and groove is enlarged, the entire contour projection will be larger than the screen size of an ordinary projector, see figure 1 , so it is impossible to complete the full-shaped profile inspection of the tongue and groove, which affects the efficiency of part inspection; if a large-screen projector is equipped to realize the full-shaped profile inspection, the cost is relatively high

Method used

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  • Method for measuring profile tolerance of large-size mortise on small-diameter projector
  • Method for measuring profile tolerance of large-size mortise on small-diameter projector
  • Method for measuring profile tolerance of large-size mortise on small-diameter projector

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail;

[0024] The projector in the embodiment adopts the Cyclop type projector of Italian LTF company, and the projector screen is a circular screen with a diameter of Φ1000mm; the maximum external dimension of the tenon groove: 24mm×14mm, after the projection of the tenon and groove is enlarged by 50 times, the projection image of the tenon and groove The size is 1200mm×700mm, which exceeds the screen size of the projector, so it is necessary to adopt the method of the present invention for measuring the profile of a large-sized tongue and groove on a small-diameter projector, and measure according to the method of partitioning, and specifically follow the following steps:

[0025] Step 1. Set the tolerance zone of the tongue and groove profile image 3 Double contour line 4 in the tongue and groove face part, see figure 2 , the compression tolerance becomes...

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Abstract

The invention provides a method for measuring the profile tolerance of a large-size mortise on a small-diameter projector. The method is characterized by changing the double-profile lines into single-profile lines through compression of datum and profile tolerance of the working surface of the mortise in an amplified drawing of profile tolerance range, rapidly aligning the projected images of the mortise with the drawing of tolerance range and utilizing the accurate positioning capability of the projector to realize the detection of the profile tolerance of the large-size mortise by adopting a subarea detection method, thus realizing detecting the complete-type profile tolerance of the large-size mortise on the small-diameter projector. The measuring efficiency is improved by adopting the method.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for measuring the profile degree of a large-size tongue and groove on a small-diameter projector. Background technique [0002] At present, to detect the profile of the tongue and groove of aero-engine disk parts, it is usually used to enlarge the projection of the profile of the tongue and groove by 20 times or 50 times, and then compare it with the same enlarged tolerance zone diagram of the profile of the tongue and groove; for those with high profile requirements Parts, when performing projection inspection on the contour of a large-sized tenon and groove, after the projection of the contour of the tenon and groove is enlarged, the entire contour projection will be larger than the screen size of an ordinary projector, see figure 1 , so it is impossible to complete the full-shaped profile inspection of the tongue and groove, which affects the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 隋景丛史前凯徐新发闫沙林王策民
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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