Detection test piece and method for detecting curved surface processing capacity of five-axis numerical control machine tool

A technology for CNC machine tools and surface processing, applied in metal processing machinery parts, metal processing equipment, manufacturing tools, etc., can solve the problems of lack of effective means of processing capacity, difficulty in realizing error factor decoupling and machine tool error traceability, etc. Geometric properties of a single effect

Active Publication Date: 2016-01-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, the above-mentioned test pieces all have comprehensive geometric characteristics, which can only comprehensively evaluate the performance of the machine tool, and it is difficult to decouple the error factors and trace the source of the machine tool error.
Five-axis CNC machine tools are mainly used for complex curved surface processing. At present, there is still no effective means for testing the ability of machine tools to process complex curved surfaces.

Method used

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  • Detection test piece and method for detecting curved surface processing capacity of five-axis numerical control machine tool
  • Detection test piece and method for detecting curved surface processing capacity of five-axis numerical control machine tool
  • Detection test piece and method for detecting curved surface processing capacity of five-axis numerical control machine tool

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Experimental program
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Embodiment 1

[0044] The method for detecting the surface processing capability of a five-axis linkage CNC machine tool model V51030ABJ includes the following steps:

[0045] Step 1. Geometrically model the test piece by general-purpose CAD software. The thickness of the base 1 and the height of the curved edge 2 are both 40mm, and the angle between the A surface and the B surface of the curved edge 2 and the plane of the base 1 Both are 105°.

[0046] Step 2. In the specimen model established in step 1, set the milling path. The milling process is divided into rough machining, semi-finishing machining and finishing machining. Pre-commands (x, y, z, i, j , k), to generate the NC codes (X, Y, Z, A, B) of each coordinate axis during the processing of the specimen.

[0047] Step 3. The blank material is 7075-t7451 aluminum alloy, and the blank size is 300mm×200mm×80mm. Choose an end mill with a diameter of 20mm, and process it from top to bottom at a depth of 10mm per layer along the directio...

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Abstract

The invention discloses a detection test piece and method for detecting the curved surface processing capacity of a five-axis numerical control machine tool. The test piece comprises a base and a curved surface flange arranged on the base; the curved surface flange is provided with an S-shaped processing face A and an S-shaped processing face B; the face A is a curved surface formed by splicing arc sections and straight line sections and has different curvature continuities under the constant curvature; the face B is a cubic b-spline curved surface, and the curvature of the face B changes continuously. Compared with the prior art, the strength of the impact resistance of the machine tool in the complex curved surface processing is reflected by building the curved surface outline test piece with different curvature continuities; meanwhile, the decoupling difficulty of a composite test piece can be solved effectively, and judgment of important factors for processing errors is achieved directly through the error measurement of the processed outline.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to a test piece and a detection method for detecting the ability of a five-axis numerical control machine tool to process curved surfaces with different curvature continuity. Background technique [0002] With the development of the manufacturing industry, it is the general trend for enterprises to choose five-axis CNC machine tools for processing various complex surfaces. The accuracy of the machine tool directly determines the accuracy of the machined parts. How to judge whether the machining accuracy of the five-axis CNC machine tool meets the processing requirements has always been a hot topic of research at home and abroad. Commonly used CNC machine tool accuracy testing methods are mainly divided into two categories: one is to use instruments to directly test the accuracy of machine tools. The second is to process the test piece with specif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/00
CPCB23Q17/007
Inventor 宋智勇王伟陶文坚李晴朝李勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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