On-line three-dimensional shape-surface detection system for numerical control machining centre

A machining center and surface detection technology, applied in the field of measurement, can solve the problems that it is difficult to meet the batch production needs of complex and precise workpieces, and achieve the effects of shortening the processing cycle, changing motion parameters, and increasing flexibility

Inactive Publication Date: 2011-02-09
DALIAN MARITIME UNIVERSITY
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AI Technical Summary

Problems solved by technology

Undoubtedly, this offline or manual detection mode is difficult to meet the mass production needs of complex and precise workpieces, and the solution to the on-machine detection problem is imminent

Method used

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  • On-line three-dimensional shape-surface detection system for numerical control machining centre
  • On-line three-dimensional shape-surface detection system for numerical control machining centre
  • On-line three-dimensional shape-surface detection system for numerical control machining centre

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Embodiment Construction

[0053] Through the CNC machining center, the data detection of the workpiece with complex curved surface is carried out by using the contact probe probe and the non-contact laser scanning head. First, according to the processing model of the workpiece to be measured, the adaptive distribution of measuring points and the automatic planning of measuring paths are realized. Then, using the five degrees of freedom of the CNC machining center, the machining spindle drives the compound shape and surface information extraction device to complete the entire measurement process. Through the coordination of different measurement methods, the data conversion between different measurement coordinate systems and the reconstruction of measurement models are realized. Through contact measurement, the system obtains a small number of local key measurement point information with higher reliability, and corrects the overall measurement model. Finally, the corrected measurement model is compare...

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Abstract

The invention discloses a complicated workpiece on-line detection system for a numerical control machining centre, and aims to monitor and control the quality in the machining process, shorten the machining and manufacturing period of a large-scale complicated workpiece and change the current situation of a manual detection mode or an off-line spot check mode in the conventional field of machining and manufacturing. On-line detection equipment mainly comprises a numerical control machining centre, a combined measuring head, a wireless signal transceiver, a control computer and measuring software thereof. The on-line detection technical scheme is that: the numerical control machining centre is used as a measurement movement driving mechanism; a spindle of the numerical control machining centre drives the combined measuring head to measure the workpiece and transmits the measured result to the control computer through the wireless signal transceiver, the result is subjected to model reversion and data fusion postprocessing, and a workpiece machining quality report is provided on line in real time, so the qualification rate of finished products and the machining efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of measurement, relates to an on-machine detection method for complex workpiece surfaces of a numerical control machining center, and is an on-machine three-dimensional surface detection system of a numerical control machining center Background technique [0002] In the field of advanced manufacturing technology, the manufacturing and processing level of complex precision parts plays an important role. The overall performance of equipment depends on the overall processing level of key important components. The implementation of process quality monitoring and control is the key to ensure and improve the processing level of complex precision parts. [0003] The precision machining of some complex workpieces can only be done in advanced CNC machining centers. In recent years, foreign countries have carried out some exploration and research work in the field of on-machine inspection technology of CNC machine t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
Inventor 马孜陈余庆胡英黄进李鹏
Owner DALIAN MARITIME UNIVERSITY
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