Measuring device for parameter of metal plate hole

Abstract

The invention discloses a measuring device for a parameter of a metal plate hole, relating to the technical field of measurement and being invented to measure the parameter of the metal plate hole precisely. The measuring device for the parameter of the metal plate hole comprises a limiting base, a slide block, a measuring head and a displacement sensor, wherein the limiting base is internally provided with a first hole and a second hole, both of which are mutually connected and coaxial; the aperture of the first hole is greater than that of the second hole; a lug boss which is contained in the first hole is arranged at the sidewall of the top part of the slide block; the sidewall below the lug boss of the slide block is matched with the inner wall of the second hole in a sliding manner; the measuring head with a round cross section is fixed at the bottom of the slide block; the intersecting line of the lengthways section of the measuring head and the side surface of the measuring head is a beeline; the included angle between the intersecting line and the bottom of the measuring head is less than or equal to 90 degrees, but grater than 0 degree; ad the displacement sensor is used for detecting the displacement of the slide block from a starting position to a measured position. The measuring device for the parameter of the metal plate hole, disclosed by the invention, is used for measuring the parameter of the metal plate hole.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a measuring device for sheet metal hole parameters. Background technique [0002] Many sheet metal parts are used in the automobile manufacturing process, and circular holes (called sheet metal holes) with different diameters need to be made on the sheet metal parts to suit different assembly needs. [0003] In order to know whether the fabricated sheet metal hole meets the requirements, it is usually necessary to measure the parameters of the sheet metal hole. The parameters of the sheet metal hole include the aperture and the surface difference (the distance between the surface where the hole is located and the opposite surface after installation and fixation). [0004] Among them, the measurement of the aperture usually uses a vernier caliper, that is, the measuring foot of the vernier caliper is clamped in the sheet metal hole, and then the value on the vernier caliper is...

AI Technical Summary

Problems solved by technology

[0005] Due to the need to manually place the measuring feet, the position of the measuring feet is likely to deviate from the diameter of the sheet metal hole, making the measurement accuracy low. At the same time, there is no tool in the prior art that can measure the surface difference of the sheet metal hole

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