Machine vision-guided laser gear chamfering contour measurement apparatus and measurement method thereof

Abstract

The present invention provides a machine vision-guided laser gear chamfering contour measurement apparatus, which comprises a machine vision calibration device, a measurement workbench, a gear chamfering contour measurement device and a data acquiring and processing device. The machine vision calibration device comprises a light source module. The light source module is arranged on the measurement workbench. A Z-axis adjustment mechanism is arranged at one side of the measurement workbench. One end of the Z-axis adjustment mechanism is provided with an industrial camera. The industrial camera is connected with the data acquiring and processing device through a USB data line interface. The gear chamfering contour measurement device comprises an X-Y movement platform at one side of the measurement workbench. The Z-axis measurement workbench arranged on the X-Y movement platform is connected with the X-Y movement platform. The Z-axis measurement workbench is provided with a laser displacement sensor. The laser displacement sensor is connected with the data acquiring and processing device through a data line. The apparatus enables the non-contact type measurement, and is accurate in measurement result and low in manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of gear chamfering profile measurement, in particular to a laser gear chamfering profile measuring instrument based on machine vision guidance. Background technique [0002] Chamfered gears are one of the essential core components in gearboxes such as automobiles and construction machinery. They are components that realize shift guidance and motion transmission, and can reduce impact and vibration. At present, the shapes of chamfers mainly include: plane sharp corners, arc surface chamfers, pointed arch rounded corners and asymmetric chamfers, etc. Automobile gearboxes need to switch gears to achieve speed change according to different working conditions. Each switch is a process of disengagement and re-engagement of paired gears. When gears without chamfering are switched, impacts and collisions between paired gears are prone to occur. And re-engagement is difficult. The machining accuracy of the chamfer ...

AI Technical Summary

Problems solved by technology

The patent number is: 2011102364117, and the name is: Gear Chamfering Laser Measuring Instrument The technical solution disclosed in the patent can measure multiple sections of a tooth, but the corresponding mandrel must be selected according to the diameter of the inner hole of the gear, and rely on the turntable and positioning Only the fixture can realize the positioning of the gear; after the measurement of multiple sections of a tooth is completed, the fixture needs to be adjusted according to the odd or even number of gear teeth, so that the measured tooth can be positioned under the measurement sensor, and then multiple sections of the next tooth can be carried out During the measurement of the chamfer profile, in the process of workpiece reloading, human factors will affect the measurement accuracy, and at the same time, the stability of the measured value will also be affected during the repeated measurement process

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