Timing angle detecting device for crankshaft assembly chain wheel

Abstract

The invention discloses a timing angle detecting device for a crankshaft assembly chain wheel, which comprises a dial gauge, a gauge rod, a vertical rod, a base, a tapered mandril, a V-shaped iron, keys and a limiting rack. The base is fixedly connected with the vertical rod and the gauge rod which are oppositely arranged in a left-right symmetrical manner, the dial gauge with an inward gauge head is horizontally arranged at the top end of the gauge rod, the top end surface of the vertical rod is located under the gauge head, and the height difference between the top end surface of the vertical rod and the gauge head is the semi-diameter value of the middle segment of the tapered mandril. Bearings at the two ends of a crankshaft are directly supported by the V-shaped iron, the front end surface of the V-shaped iron is fixedly connected with the limiting rack, and the V-shaped iron and the limiting rack are connected with the base by the keys. An elastic limiting structure consisting of a spring and a positioning sliding block is arranged in the limiting rack, and a roller needle for positioning the chain wheel is arranged at the side face of the top end of the positioning sliding block. The tapered mandril is squeezed into a connecting rod of a crankshaft assembly; when the connecting rod is horizontally swung at 180 DEG, two dial gauges calibrated at zero are used to respectively measure the deviation value of the tapered mandril and then the difference value measured by the two dial gauges is converted into an angle.

Description

Technical field [0001] The invention relates to a detection device for mechanical parts, in particular to a device for detecting the timing angle of the sprocket of a crank wheel assembly. Background technique [0002] The sprocket timing angle of the crankshaft assembly of a low-power gasoline engine is an important quality index that affects the transmission performance of the engine. In the prior art, an "n"-shaped inspection tool is used for transposition comparative detection, and this detection is qualitative. Although the existing technology can be used for production site detection, it does not display the actual deviation value of the energy value, its detection accuracy is poor, and it cannot objectively reflect the actual product quality, and of course it is not conducive to quality statistics and quality analysis. Summary of the invention [0003] The present invention mainly aims at the shortcomings of the prior art, and proposes a crankshaft assembly sprocket timing...

AI Technical Summary

Problems solved by technology

Although the existing technology can be used for on-site production testing, the energy value cannot display the actual deviation value, the detection accuracy is poor, it cannot objectively reflect the actual quality of the product, and of course it is not conducive to quality statistics and quality analysis

Images