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Method for utilizing regular surface for transmitting datum reference

A positioning datum and rule technology, which is applied in the field of transferring positioning datum by using regular surface, can solve the problems of difficulty in alignment, affecting the machining accuracy of edge trimming of special-shaped space sheet metal parts, and low scribing accuracy, so as to ensure the quality of edge trimming and improve the The effect of scribing accuracy and short cycle time

Active Publication Date: 2018-05-01
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the special-shaped space sheet metal part is a revolving body and is irregularly shaped, when it is necessary to draw a line along the surface of the special-shaped space sheet metal part, it is necessary to equip a template for different positions, and the number of templates required is very large. Alignment between these templates is extremely difficult, resulting in low scribing accuracy, which affects the trimming accuracy of sheet metal parts with special-shaped spaces

Method used

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  • Method for utilizing regular surface for transmitting datum reference
  • Method for utilizing regular surface for transmitting datum reference
  • Method for utilizing regular surface for transmitting datum reference

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 with figure 2 As shown, the present invention provides a method for using a regular surface to transfer positioning references for processing special-shaped space sheet metal parts 5, including the following steps:

[0024] Step 1. Add a cylindrical barrel with a regular cylindrical surface 3 at the lower end of the special-shaped space sheet metal part 5, and the lower end of the cylindrical barrel has an end face 9 (such as image 3 shown);

[0025] Step 2, processing at least three center holes 8 on the end surface 9, and the at least three center holes 8 are not distributed on the same straight line;

[0026] Step 3: Set at least three height-adjustable supports 2 on a flat plate 1 placed horizontally, a...

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Abstract

The invention discloses a method for utilizing a regular surface for transmitting a datum reference. The method is used for processing a sheet metal component with an irregular space, and comprises the steps of (1) additionally arranging a cylindrical barrel with a regular cylindrical surface on the lower end of the sheet metal component with the irregular space, wherein the lower end of the cylindrical barrel is provided with an end surface; (2) processing at least three center holes in the end surface; (3) arranging at least three support pieces with adjustable heights on a horizontally-placed flat plate, wherein each support piece is supported under the corresponding center hole; adjusting the heights of the at least three support pieces, and enabling the regular cylindrical surface tobe perpendicular to the flat plate; (4) enabling one side edge of a sample plate to get close to an outer side wall of the sheet metal component with the irregular space; and (5) determining an extreme lower position enabling one side edge of the sample plate to make contact with the outer side wall of the sheet metal component with the irregular space, measuring the height from the extreme lowerposition to the flat plate, and marking out according to the height. According to the method provided by the invention, the datum reference is transmitted through the regular cylindrical surface, so that the marking-out precision is improved, and the trimming quality is ensured.

Description

technical field [0001] The invention belongs to the positioning and processing technology of special-shaped thin-walled components, and in particular relates to a method for transmitting a positioning reference by using a regular surface. Background technique [0002] Special-shaped space thin-walled components (that is, special-shaped space sheet metal parts) are widely used in aerospace and rail transportation and other fields. Such special-shaped space sheet metal parts have high requirements on appearance, generally lack the regular shape required for positioning, and it is difficult to repeat positioning, and it is difficult to achieve high positioning accuracy. [0003] At present, the more common marking method of sheet metal parts is to completely use the template marking method. Since the special-shaped space sheet metal part is a revolving body and is irregularly revolving, when it is necessary to draw a line along the surface of the special-shaped space sheet met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
CPCB23Q3/065
Inventor 张树科张素敏何艳涛王波秦中环李保永闫寒
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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