Disc cam contour detecting method

Abstract

The invention discloses a disc cam contour detecting method which can be suitable for contour detection for different disc cams and particularly can be used for inner contour and outer contour detection for a plane conjugate cam. Cam processing and detecting equipment which is utilized comprises a control system, a machine body, a working platform mechanism, a cam rotation mechanism and a detection grinding device. The control system controls action of the working platform mechanism, the cam rotation mechanism and the detection grinding device. An on-line detecting device comprises a cam outer contour on-line detecting device and a cam inner contour on-line detecting device. The cam outer contour on-line detecting device is controlled by the control system through an actuator of a first linear motor, and an active cell of the first linear motor drives a first laser measuring head to carry out X-direction movement to measure the outer contour size of the plane conjugate cam. The cam inner contour on-line detecting device is controlled by the control system through an actuator of a second linear motor, and an active cell of the second linear motor drives a second laser measuring head to carry out X-direction movement to measure the inner contour size of the plane conjugate cam.

Description

technical field [0001] The invention relates to a method for detecting the profile of a disc cam. Background technique [0002] The cam mechanism is a transmission mechanism mainly composed of a cam, a follower and a frame. According to different forms, cams are usually divided into three types: disc cams, moving cams and cylindrical cams. Disc cams are further divided into disc-shaped inner cams and disc-shaped outer cams. Because disc-shaped inner cams are rarely used, the disc-shaped cams usually referred to as disc-shaped cams refer to disc-shaped outer cams. According to the difference of the movement trajectory of the follower, the cam is divided into a plane cam and a space cam. Plane cam means that the motion plane of the cam and the motion plane of the follower are parallel or coincident with each other. Disc cams and moving cams belong to plane cams, while space cams mean that the movement track of the follower is a space curve, and cylindrical cams belong to spa...

AI Technical Summary

Problems solved by technology

Although the test in this document is an online automatic test, it also belongs to point detection when it works, and the measurement accuracy is still low

[0006] Chinese patent documents CN101434053B (patent application number 20081020397.4) and CN101561250B (patent application number 200910052043.3) respectively disclose a kind of "automatic positioning and on-line measurement method and device for cam noncircular grinding" and "intelligent search for large size cam noncircular grinding". Position and on-line measurement method”, said in the first article, the on-line measurement belongs to the contact measurement, the measurement accuracy is low, the surface of the processed cam may be damaged during the contact measurement process, and the measuring head is easy to wear

In the second document, the online measurement belongs to laser image measurement, the detection device is complicated, and the manufacturing and maintenance costs are high

Although the detection device of the plane conjugate cam involved in this document can measure the inner and outer contours of the plane conjugate cam at the same time, it belongs to contact measurement, and the measurement accuracy needs to be further improved.

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