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Position-independent error detection method for five-axis gear making machine tool based on small cutting amount test piece

A technology of error detection and cutting amount, which is applied in the direction of manufacturing tools, measuring/indicating equipment, metal processing machinery parts, etc., can solve the problem of less research on rotary/oscillating machine tools, so as to avoid the influence of detection results, high detection efficiency, Effect of reducing tool wear

Active Publication Date: 2018-04-24
NANJING TECH UNIV +1
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Problems solved by technology

The general five-axis linkage machine tool is a cradle type or a double swing head type, and there are relatively few studies on the rotary / swing type machine tool

Method used

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  • Position-independent error detection method for five-axis gear making machine tool based on small cutting amount test piece
  • Position-independent error detection method for five-axis gear making machine tool based on small cutting amount test piece
  • Position-independent error detection method for five-axis gear making machine tool based on small cutting amount test piece

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Embodiment Construction

[0053] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0054] The present invention mainly uses the linear mapping relationship between the mismatched characteristic value of the cutting test piece and the position-independent error to inversely calculate the position-independent error of the machine tool, thereby obtaining the position-independent error value of the machine tool, which reflects the assembly level and mechanical stability of the machine tool. It is mainly ac...

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Abstract

The invention relates to the technical field of machine tool geometric error measuring and calibration, in particular to a five-axis gear making machine tool position independent error detection method based on a small-cutting-amount test piece. The detection method comprises the following steps that firstly, a track is compiled according to the shape of a designed test piece, a processing code is generated, small-amount cutting is conducted on the designed test piece, and a cutting test piece with a specific to-be-tested object is obtained; secondly, sensitive direction coordinates of the cutting surface of the specific to-be-tested object on the cutting test piece are detected and acquired by utilization of an on-line measuring head, and coordinate mismatching values corresponding to the cutting surface are calculated; thirdly, a homogeneous kinematic equation containing a position independent error is established, and the mapping relation between the coordinate mismatching values corresponding to the cutting surface, and the position independent error is determined; and fourthly, a position independent error item is obtained according to the mapping relation between the coordinate mismatching values corresponding to the cutting surface, and the position independent error. The fixe-axis gear making machine tool position independent error detecting and identifying method is efficient and easy to operate.

Description

technical field [0001] The invention relates to the technical field of geometric error measurement and calibration of machine tools, in particular to a position-independent error detection method for a rotary / oscillating five-axis linkage numerical control machine tool, and more specifically to a position-independent error detection method for a five-axis gear machine tool. Background technique [0002] There is a huge gap between domestic machine tools and foreign countries in terms of efficiency, precision, automation and reliability, especially the problems of poor machining accuracy and large errors cannot be effectively resolved. The geometric error of the machine tool is one of the main factors that produce machining errors. As a systematic error, the geometric error has good repeatability. Offline compensation technology can be used to reduce the influence of geometric error on machining accuracy. Geometric error can be divided into position-related error and position...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/22
CPCB23Q17/2241
Inventor 黄筱调丁爽于春建
Owner NANJING TECH UNIV
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