Hole diameter detection apparatus and method

Abstract

The invention embodiment provides a hole diameter detection apparatus and method. An embodiment of hole diameter detection apparatus comprises: a transmission part including a cylinder fixed on a cylinder fixing block for providing telescopic motion along the measurement shaft, and a coupling shaft connected with the cylinder and a fastening coupling block connected with the coupling shaft; an induction part including a sensor fixing bar fixed on the fastening coupling block, two sensors mounted on the top of the sensor fixing bar on adjustable positions, a spring shielding sheet mounted under the lower sensor, and a spring disposed between the spring shielding sheet and the limiting block in the measurement part; a measurement part including a limiting block, a measurement shaft guide rod fixed on the limiting block, and a measurement shaft which is connected with the measurement shaft guide rod and has a convergent lower end and a round cross section; and a base used for fixing bearing workpiece for measuring. The invention embodiment improves the stability and reliability of the hole diameter measurement, and reduces production cost.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to an aperture detection device and method. Background technique [0002] Bearings are highly versatile standard parts. We use bearings all the time in our lives, such as bicycles, cars, chairs, tables, bearings are used in rotating and sliding places. [0003] Bearings are standard parts, which have high precision requirements and installation versatility requirements for dimensions. The outer diameter, inner diameter, thickness, clearance, and vibration measurement are all mandatory inspection items, and the inspection of the inner diameter is particularly important. [0004] In the manufacturing process of bearings, it is inevitable to produce defective products with larger or smaller inner diameters. In order to prevent the outflow of defective products, the method of manual plug gauge detection is generally used to detect the inner diameter of bearings. However, when the ...

AI Technical Summary

Problems solved by technology

However, when the plug gauge is detected manually, the measuring force is not easy to control, and the misjudgment rate is high; and the plug gauge detection requires a special person to operate, and the production cost is high.

[0005] As can be seen from the above, the manual plug gauge detection misjudgment rate in the prior art is high and the production cost is high

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