Visual detection tool for qualification of hole depth of workpiece

Abstract

The invention discloses a visual detection tool for detecting whether a hole depth of a workpiece is within an allowable tolerance. The tool comprises a cylindrical tool body which comprises an inner hole stretching part, a tolerance part, a limiting part, an exposed part, and a moving rod. The stretching part, the tolerance part and the exposed tail part are sequentially and concentrically connected through a shaft, and the limiting part is an annular piece and is connected to the joint of the tolerance part and the exposed part in a sleeving mode; the part, connected with the tolerance part, of the exposed part is a solid part, and the other part is a hollow part; the solid parts of the stretching part, the tolerance part and the exposed part are respectively provided with a through hole along the central axis, the moving rod penetrates into the through hole, and two ends of the moving rod are respectively exposed at the outer end of the stretching part and the outer end of the solid part; a connecting rod is arranged at the tail end of the hollow part of the exposed part, and conductive metal sheets are arranged on the opposite surfaces of the connecting rod and the moving rod; and an LED lamp is arranged outside the hollow part, and circuit connection of the LED lamp is controlled by the metal sheet. The tool extends into the inner hole so that whether the inner hole reaches the bottom or not can be intuitively judged, and whether the length of the inner hole is within a tolerance allowable range or not can be intuitively observed. Therefore, whether the value is a qualified value or not can be detected through visual inspection by only inserting the tool into the hole, complicated reading cannot be carried out, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to a tool for visually detecting qualified workpiece hole depth, which belongs to the technical field of mechanical measurement. Background technique [0002] In the prior art, the measurement of the hole depth is relatively complicated. Insert the measuring stick into the hole and read the reading to determine whether it is qualified. However, there are many problems in such an operation. First, it is impossible to judge whether the measuring stick is completely in the bottom and whether it fits with the bottom of the hole. If not, there will be a large error in the measured value; Making judgments consumes artificial brainpower. Therefore, there is a need for a visual inspection tool for the qualified and qualified hole depth of a workpiece. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention discloses a qualified visual inspection tool for workpiece hole depth....

AI Technical Summary

Problems solved by technology

However, there are many problems in such an operation. First, it is impossible to judge whether the measuring stick is completely in the bottom and whether it fits with the bottom of the hole. If not, there will be a large error in the measured value; Make judgments, consume artificial brainpower

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