Test piece and test method for testing the surface processing capability of five-axis CNC machine tools
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 difficulty in realizing error factor decoupling, machine tool error traceability, lack of effective means of processing capability, etc., and achieve single geometric characteristics. , the effect of simple shape
Active Publication Date: 2018-03-02
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.
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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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The invention discloses a detection test piece and a detection method for detecting the curved surface processing ability of a five-axis numerical control machine tool. The test piece includes a base and a curved edge strip arranged on the base. Surface A is a surface spliced by arcs and straight lines, which has different curvature continuity under constant curvature; surface B is a cubic B-spline surface, and its curvature changes continuously. Compared with the prior art, the present invention reflects the strength of the impact resistance of the machine tool in complex curved surface processing by constructing curved surface contour test pieces with different curvature continuity, and can effectively solve the decoupling difficulty of the comprehensive test pieces at the same time. Contour error measurement directly realizes the judgment of important factors of machining error.
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...
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IPC IPC(8): B23Q17/00
CPCB23Q17/007
Inventor 宋智勇王伟陶文坚李晴朝李勇杜丽郭志平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA