Diameter measurement device and measurement method of inner groove

A technology of diameter measurement and inner diameter, applied in the field of machining, can solve the problems of insufficient range, insufficient precision, and difficult to complete, and achieve the effect of large contact area, stable measurement value, and error reduction.

Inactive Publication Date: 2020-01-07
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, the diameter of the inner groove on the market is mainly measured by general methods, such as direct measurement by vernier calipers, inner diameter dial indicators, inner diameter dial gauges, inner calipers, calipers with meters, inner diameter dial indicators, and three-jaw inner diameter micrometers. However, according to the different structural sizes of the tested products, the general measurement method has the following deficiencies in applicability, such as the measurement accuracy and resolution ...
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Abstract

The invention relates to a diameter measurement device and measurement method of an inner groove, and particularly to a diameter measurement device and measurement method of an inner groove with larger depth, higher size accuracy and a deeper position, and belongs to the technical field of machinery machining. According to the device and method, reference pad pieces are used to reduce the inner groove, and a diameter of the inner groove is further indirectly measured through a measurement instrument, thus the problem that the diameter cannot be measured due to that a measurement claw cannot bein contact with the measured inner groove is solved, and measurement instruments with different accuracy levels can realize diameter measurement of the inner groove with different accuracy. Further,the reference pad pieces of a multi-segment tile-shaped structure are used to be in contact with measurement heads of the measurement instrument, a contact area is large, a measurement value is stable, and measurement errors of different operators are reduced.

Application Domain

Mechanical diameter measurements

Technology Topic

PhysicsMeasurement device +3

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  • Diameter measurement device and measurement method of inner groove
  • Diameter measurement device and measurement method of inner groove
  • Diameter measurement device and measurement method of inner groove

Examples

  • Experimental program(1)

Example Embodiment

[0024] Hereinafter, the present invention will be further described in detail through specific embodiments.
[0025] An inner groove diameter measuring device, which is characterized by comprising a reference gasket 03, a diameter detection instrument 01, and a measuring instrument probe 04; the reference gasket 03 has a tile-like structure, and the reference gasket 03 has at least two sections It is placed on the side wall of the inner groove of the tested part and can be closely attached to the side wall of the inner groove. The outer diameter is the same as the diameter of the inner groove of the part. The number of the reference spacer 03 is the same as that of the measuring claw of the measuring instrument probe 04 In the same quantity, the measuring instrument probe 04 is installed on the measuring end of the diameter detecting instrument 01, and the measuring instrument probe 04 is in contact with the reference gasket 03; preferably corresponding to the center point of the reference gasket 03; the diameter detection Appliance 01 is an inner diameter dial indicator, an inner diameter dial indicator, and a three-jaw inner diameter micrometer.
[0026] 1 According to the diameter of the inner groove 02, select the appropriate size of the pair of meter ring 05 and the reference gasket 03;
[0027] 2 Select the type of measuring instrument 01 according to the diameter accuracy of the inner groove 02;
[0028] 3 Select the probe 04 of the measuring instrument 01 according to the width and depth of the inner groove 02;
[0029] 4 Calibrate the zero position of the measuring instrument 01;
[0030] 5 Place the meter ring 05 on the measuring platform, place the reference gasket 03 on the inner side of the meter ring, touch the measuring instrument probe 04 to the inner side of the reference gasket 03, and adjust the diameter Adjust the detection instrument 01 to the 0 position, and set the 0 position size as the reference size; the drawing size of the inner groove inner diameter of the tested part is the same as the inner diameter of the sample ring 05.
[0031] 6 Take out the measuring instrument 01 correctly, and take out the reference gasket 03;
[0032] 7 Place the reference gasket 3 in the inner groove of the measured part, contact the measuring instrument probe 04 with the inside of the reference gasket 03, adjust the diameter detection instrument 01, read the measured value and judge the Whether the value is within the tolerance range of the groove diameter in the drawing; the measuring claw of the measuring instrument probe 04 corresponds to the center point of the reference gasket 03.
[0033] The inner groove diameter measuring device and method provided by the present invention use a reference gasket to make the inner groove smaller, and further measure the inner groove diameter indirectly through a measuring instrument, thereby solving the problem of inability to measure the diameter caused by the inability of the measuring claw to contact the measured inner groove. The measuring instrument of the accuracy grade can realize the measurement of the inner groove diameter with different accuracy. Further, the reference pad with a multi-section tile-like structure is in contact with the probe of the measuring instrument, the contact area is large, the measurement value is stable, and the measurement error of different operators is reduced.

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