A kind of detection device and calibration method for coplanarity of front-end gear train of engine

Abstract

The invention provides a coplanarity detection device for the front end of the engine wheel train, which includes two sets of limit support units, two installation shafts and a coplanarity corrector. The bottom of the limit support is installed in the groove of the wedge wheel; Through the positioning holes of the two limit supports, the accuracy of the positioning of the center plane of the wedge wheel is ensured; the laser transmitter and receiver are respectively installed at the circular sections of the two shafts through bolt connections, aligned with each other, and can be adjusted manually. The invention uses at least two wedge grooves to locate the center plane of the wedge wheel, which improves the accuracy of coplanarity detection; it can also measure wedge wheels with different tooth shapes and the same diameter; the coplanarity corrector is located outside the wedge wheel, It will not be blocked by the belt, so there is no need to remove the belt during measurement; the limit support is thin and easy to process, and for the detection of coplanarity between wheels with different wedge-shaped cross-sections of different wheel trains, it is only necessary to change a limit support Complete the measurement, this device reduces the manufacturing time and cost of tooling, and has high detection efficiency and accuracy.

Description

technical field [0001] The invention designs the technical field of automobile parts detection, and particularly relates to a detection device and a calibration method for the coplanarity of an engine front-end wheel train. Background technique [0002] With the continuous development of technology in the automotive field, the structure of the front-end attachment system of the engine is becoming more and more compact. The arrangement of the engine front-end accessory gear train has a great influence on the engine's transmission of the power of the crankshaft to the fans, air conditioner compressors, generators, water pumps and power steering pumps and other accessories, and also affects the vibration, noise and acoustic vibration of the vehicle. Roughness characteristics. When assembling the automotive powertrain, it is necessary to check the coplanarity of the front-end wheel train of the engine to ensure the parallelism between the pulleys. When the coplanarity is not u...

AI Technical Summary

Problems solved by technology

In this method, the positioning of the center plane of the wedge wheel is relatively accurate and the detection efficiency is high. However, in this patent, the laser transmitter and laser receiver are fixed on the tooling by bolts, and the quality of the laser transmitter, laser receiver and tooling has a great influence on the actual gear train. The coplanarity has a great influence, and the tooling is difficult to fix on the wedge wheel. In fact, the V-ribbed belt in the front-end wheel train will also block the laser transmission between the laser transmitter and the laser receiver. For different wheel diameters and wrap angles Wedge wheels need to re-manufacture the tooling, its structure is more complicated, the tooling processing time is long, and the production cost is high

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