Simple large hole chamfering measurement tool

Abstract

The invention discloses a simple large hole chamfering measurement tool. The tool comprises a measurement set and a measurement mandrel, wherein the measurement mandrel is arranged in a guide hole ofthe measurement set in the manner of sliding, the measurement mandrel is a ladder-shaped shaft body, an upper part of the measurement mandrel is a small shaft for guiding while a lower part thereof isa big shaft with a conical surface, a conical surface angle is consistent with the conical surface of a to-be-measured orifice chamfering, and a limit face is formed at a connection part between thebig shaft and the small shaft; the guide hole of the measurement set is a countersink and is in clearance fit with the measurement mandrel; the upper end of the measurement set is provided with a bracket, the upper part of the bracket is provided with a measurement mechanism, a spring is fixed at the lower part of the bracket, and the bracket is connected with the measurement mandrel through the spring; the bracket also comprises a pressing shaft, a middle part of the bracket is provided with a through hole, and the pressing shaft penetrates through the through hole and is fixed at the upper end of the measurement mandrel. The simple large hole chamfering measurement tool has the advantages of compact structure, high measurement precision, efficient measurement, and so on.

Description

technical field [0001] The invention relates to the technical field of hole processing, in particular to a simple chamfering measuring tool for large holes. Background technique [0002] During the machining process of engine parts, three checks must be carried out to ensure that the dimensions meet the requirements of the drawings. In order to accurately and quickly measure the depth and diameter of the chamfer of the large hole during the three checks, it is necessary to be simple and suitable. If there are no simple and suitable measuring tools on the production site, but rely on traditional vernier calipers, depth gauges, angle gauges, etc. to measure and then manually calculate, it will easily cause measurement errors and low efficiency to affect production. The batch processing is unqualified due to misjudgment, thereby affecting the assembly quality and safety hazards of the engine. [0003] The disclosure of the above background technical content is only used to ass...

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Problems solved by technology

[0002] During the machining process of engine parts, three checks must be carried out to ensure that the dimensions meet the requirements of the drawings. In order to accurately and quickly measure the depth and diameter of the chamfer of the large hole during the three checks, it is necessary to be simple and suitable. If there are no simple and suitable measuring tools on the production site, but rely on traditional vernier calipers, depth gauges, angle gauges, etc. to measure and then manually calculate, it will easily cause measurement errors and low efficiency to affect production. Unqualified batch processing due to misjudgment, thus affecting the assembly quality and safety hazards of the engine

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