High-precision belt pulley run-out testing fixture

Abstract

The invention relates to a high-precision belt pulley run-out testing fixture which comprises a mounting seat; a workpiece mounting block rotationally mounted on the mounting seat; an abutting mechanism which comprises a plurality of groups of fixing holes formed in the workpiece mounting block, wherein two fixing holes are arranged in one group, the bottoms of the fixing holes are inclined inwards, the upper parts of the fixing holes are vertically arranged upwards, and two corresponding abutting balls are movably mounted in the fixing holes respectively; an expansion silica gel ring sleeved with the sleeving groove of the mounting hole of the workpiece mounting block, wherein an abutting ball located at the bottom of the fixing hole abuts against the expansion silica gel ring; a glue pressing sleeve, wherein a sleeve convex edge for axially pressing the expansion silica gel ring is arranged on the outer side of the glue pressing sleeve; a sleeve locking piece used for fixing and locking the glue pressing sleeve; and a dial indicator, wherein a measuring head directly face the side wall of the workpiece mounting block. The testing fixture is simple in structure, convenient in measurement operation, high in measurement result precision, high in detection efficiency and low in detection cost.

Description

technical field [0001] The invention belongs to the technical field of belt pulley detection, and specifically refers to a high-precision belt pulley runout inspection tool. Background technique [0002] After the key processes of the existing pulley, such as stamping, spinning and other processes, the contact surface of the pulley and the belt has a runout size requirement relative to the inner hole of the bearing, and the detection reference is the central axis of the bearing. When the runout size is routinely measured, it is necessary to use a tapered mandrel to contact and cooperate with the taper line of the bearing hole, and combine it with a runout measuring instrument that occupies a large area to complete the measurement. First of all, due to the high space occupation requirements, the measurement adaptability is relatively low, that is, it cannot be used in the production site with small space; The impact is large, resulting in poor repeatability of the beating re...

AI Technical Summary

Problems solved by technology

First of all, due to the high space occupation requirements, the measurement adaptability is relatively low, that is, it cannot be used in the production site with small space; The impact is large, resulting in poor repeatability of the beating results. When the size tolerance of the inner hole of the pulley is large, it is necessary to match the tapered mandrels of different specifications to ensure the accuracy of the measurement. The cost of the inspection tool is high, the management cost is large, and the detection cost is high.

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