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On-machine detection measuring head and detection system for numerical control machine tool

A technology of numerical control machine tools and detection systems, applied in general control systems, control/adjustment systems, program control, etc., can solve the problems that cannot be eliminated, difficult to compensate for measurement errors, and low feed speed, etc., and achieve the improvement of measurement efficiency and measurement accuracy Effect

Active Publication Date: 2012-06-20
WUHAN HENGLI HUAZHEN TECH CO LTD
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AI Technical Summary

Problems solved by technology

Therefore, at present, the feed rate of the trigger probe used in the machine inspection is often low during the measurement process, which seriously affects the measurement efficiency.
[0011] Second, measurement errors are difficult to compensate
can only reduce this error but not eliminate it

Method used

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  • On-machine detection measuring head and detection system for numerical control machine tool
  • On-machine detection measuring head and detection system for numerical control machine tool
  • On-machine detection measuring head and detection system for numerical control machine tool

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Embodiment Construction

[0028] The invention first optimizes and transforms the original machine tool trigger probe, and uses multi-sensing fusion technology to solve the accuracy and efficiency problems of the machine tool probe in the actual measurement process. exist figure 1 Among them, the measuring rod 7 can do linear motion in the vertical direction under the constraint of the guide mechanism 6, and 4 is the installation bearing. 5 is a linear displacement sensor, one piece is fixed and one piece is movable during the installation process, and the installation distance between the two pieces is determined according to the measurement stroke. The spring 3 is wound on the stud 2 as an automatic reset mechanism. The probe can automatically return to its original position during the measurement process. Structure 1 is a tool handle, which is used to be installed on the spindle of the machine tool.

[0029] A linear displacement sensor is installed in the shell of the machine tool probe, which i...

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Abstract

The invention discloses an on-machine detection measuring head for a numerical control machine tool. The on-machine detection measuring head comprises a measuring bar and a guide mechanism for guiding the measuring bar to make the vertical linear motion. The top of the measuring bar is provided with an elastic reset mechanism. The on-machine detection measuring head is characterized in that a linear displacement sensor is arranged at the position close to the measuring bar. The invention also discloses a detection system applying the measuring head, and the detection system comprises the measuring head, a signal acquisition circuit and a control center which are sequentially electrically connected. A numerical control system executes a measuring program to control a servo system of the machine tool to drive the measuring head to carry out measurement; coordinates of a point which is measured each time are timely transmitted back to the detection system; after the model detection is completed, the detection system carries out error compensation on measurement data; a spatial position and shape information of a measured workpiece can be calculated by carrying out corresponding operation on the corrected data; and the positioning and processing correction of the workpiece are guided by utilizing an obtained result. Auxiliary processing time can be greatly saved and the rejection rate of the workpiece is reduced.

Description

technical field [0001] The invention belongs to the technical field of advanced measurement and detection, and in particular relates to a probe and a detection system for on-machine detection of a numerically controlled machine tool. Background technique [0002] With the continuous development of industrial automation, free-form surface workpieces are more and more widely used in aviation, automobile and other industrial fields, and the requirements for the machining accuracy and quality inspection accuracy of CNC machine tools are also increasing. [0003] At present, most of the inspection tools used in the industrial process are three-coordinate measuring machines, which are expensive and complicated to operate. Moreover, due to the problems of time-consuming and secondary positioning, the traditional manual measurement and offline measurement cannot combine processing and inspection. Effective combination has been unable to meet the growing detection needs. [0004] On...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/00G05B19/404
Inventor 李斌刘红奇李沨毛新勇彭芳瑜毛宽民
Owner WUHAN HENGLI HUAZHEN TECH CO LTD
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