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Inner hole groove diameter gauge

A technology of inner hole grooves and measuring tools, which is applied in the direction of mechanical diameter measurement, etc., and can solve problems such as difficult measurement

Inactive Publication Date: 2008-02-13
陈焕春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now there are ring grooves in the holes of some mechanical parts, and the measurement of the diameter of the grooves cannot be completed with ordinary measuring tools, especially for grooves with small widths. It is even more difficult to measure the diameters accurately.

Method used

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  • Inner hole groove diameter gauge

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Embodiment Construction

[0014] As shown in the figure, the measuring tool is composed of dial indicator 1, lower bracket 2, upper bracket 3, pin 4, probe 5, locking stud 7, knurled high nut 8, open sleeve 9 and measuring stud 10. The pin 4 passes through the hole between the lower bracket 2 and the upper bracket 3 and connects them with flat washers, spring washers and nuts, so that they can rotate relatively flexibly around the axis of the pin 4 and the gap between the pin 4 and the hole should be small. Optional H7 / g6. In the axial direction where the pin 4 and the hole fit, the flat washer is pressed against the end face of the small cylinder used for the pin 4 to fit, and the lower bracket 2 and the upper bracket 3 are abutted against the small cylinder end face by the large cylindrical end face of the pin 4 and the flat washer. It is tightly packed, and the matching gap should be small. H7 / g6 can also be selected; in order to make the lower bracket 2 and the upper bracket 3 of the measuring tool rot...

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Abstract

A diameter measure tool for a groove of an inner hole is provided. A pin pierces through middle holes of an upper stent and a lower stent and is linked with the upper stent and the lower stent through a flat washer, a spring washer and a nut. A locking stud pierces through a ring groove which centers on the axis of a pin hole on the upper stent and is installed in a thread hole of the lower stent to be locked through a nut. The end of the locking stud exposing out of the upper stent is equipped with a knurl high nut for locking the upper stent and the lower stent. Two probes are respectively fixed in the screw holes on the same ends of the upper stent and the lower stent. A percent meter is fixed in a hole on the other end of the lower stent. A measuring stud is fixed in the screw hole on the other end of the upper stent. The two probes are put into a groove of a work piece hole by holding the upper stent and the lower stent with hands. Under the elastic function of the percent meter probe, the two probes of the measure tool are arranged on the diameter position of the groove. With the match of a percent scale or a standard hole, the diameter of groove of the inner hole can be measured rapidly and precisely according to the number indicated by the pointer of the percent meter. The measure tool also can substitute a common inner diameter scale to measure the inner hole of a common part.

Description

Technical field [0001] The invention relates to a measuring instrument for mechanical parts, in particular to a measuring instrument for the diameter of an inner hole slot. Background technique [0002] Nowadays, some mechanical parts are designed with ring grooves in the holes. The measurement of the diameter of the groove cannot be done with ordinary measuring tools, especially for the groove with small width. It is more difficult to accurately measure the diameter of the groove. Summary of the invention [0003] The purpose of the present invention is to provide a diameter measuring tool for the inner hole groove, which can conveniently and reliably measure the precise size of the diameter of the inner hole groove. [0004] The technical solution adopted by the present invention to solve its technical problem is: using the principle of lever to record the diameter of the inner hole groove reflected by the two probes at one end of the lever on the dial indicator at the other e...

Claims

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Application Information

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IPC IPC(8): G01B5/12
Inventor 陈焕春吴淼东
Owner 陈焕春
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