Engine front end wheel train coplanarity detection device and calibration method

Abstract

The invention provides an engine front end wheel train coplanarity detection device which comprises two sets of limiting support units, two mounting shafts and a coplanarity correction instrument. The bottom of a limiting support is mounted in a groove of a wedge wheel. The mounting shaft penetrates through the positioning holes of the two limiting supports, so that the positioning accuracy of the central surface of the wedge wheel is ensured; the laser transmitter and the laser receiver are connected through bolts and installed on the circular sections of the two shafts respectively, and the laser transmitter and the laser receiver are aligned and can be manually adjusted. According to the invention, the central surface of the wedge wheel is positioned by the at least two wedge grooves, so that the accuracy of coplanarity detection is improved; wedge wheels with different tooth forms and the same diameter can also be measured; the coplanarity corrector is arranged on the outer side of the wedge wheel and cannot be blocked by the belt, so that the belt does not need to be detached during measurement; the limiting support is light, thin and easy to machine, detection of coplanarity between wheels with different wedge-shaped sections of different wheel trains can be completed only by changing one limiting support, and the device reduces manufacturing time and cost of tools and has high detection efficiency and precision.

Description

technical field [0001] The invention relates to the technical field of auto parts detection, in particular to a detection device and a calibration method for the coplanarity of an engine front wheel train. Background technique [0002] With the continuous development of technology in the automotive field, the structure of the front-end accessory system of the engine is becoming more and more compact. The arrangement of the front-end accessory wheel train of the engine has a great influence on the power transmission of the crankshaft by the engine to the accessories such as the fan, air-conditioning compressor, generator, water pump and power steering pump, and also affects the vibration, noise and sound vibration of the car Roughness properties. When assembling the powertrain of an automobile, it is necessary to check the coplanarity of the front wheel train of the engine to ensure the parallelism between the pulleys. When the coplanarity is not up to the standard, the V-r...

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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