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Device and method for measuring incomplete outer arc radius of rotary workpiece

A technology of radius measurement and outer arc, applied in the direction of measuring devices, instruments, etc., to achieve the effect of reducing calculation difficulty, accurate detection results, and improving inspection efficiency

Inactive Publication Date: 2019-02-19
AECC AVIATION POWER CO LTD
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Problems solved by technology

No relevant public literature was retrieved in China

Method used

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  • Device and method for measuring incomplete outer arc radius of rotary workpiece
  • Device and method for measuring incomplete outer arc radius of rotary workpiece
  • Device and method for measuring incomplete outer arc radius of rotary workpiece

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Embodiment 1

[0042] Such as figure 2 As shown, two detection cylinders with the same diameter are used, and the diameter is D; the calculation formula is:

[0043]

[0044] After finishing:

[0045]

[0046] During the measurement process, it can be measured as the distance M between the outer end surfaces of two detection cylinders, that is, the sum of the distance between the two centers and the diameter of a detection cylinder.

[0047] When the engine manufacturing industry encounters a large and incomplete circular arc outside the rotary body, the on-site measurement is often due to the large and incomplete external circular arc of the workpiece, and it is difficult to find the maximum true value of the external circular arc by direct measurement. Through the research of this detection method , which satisfies the detection method when the circular arc of the larger rotary body encountered in the engine manufacturing site is incomplete, solves the problem of detecting the circ...

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Abstract

The invention discloses a device and method for measuring an incomplete outer arc radius of a rotary workpiece. The method comprises the following steps of: placing an arc surface of an arc workpieceto be tested in a reference plane; respectively placing a detection cylinder at two sides of the arc workpiece to be tested; contacting the surfaces of two test cylinders with the surface of the workpiece to be tested; having the surfaces of the two detection cylinders on the same plane as the surface of the workpiece to be tested; measuring the distance between the two detection cylinders to obtain the distance from one of the detection cylinder centers and the arc workpiece center to be tested to a vertical line of a reference plane; and obtaining a radius value of a circular arc surface ofthe arc workpiece to be tested by using the Pythagorean theorem of the symmetrical triangle. The method is simple and fast, can obtain accurate data, solves the problem of the outer arc detection of the rotary body, and improves the detection efficiency, which is a measurement method with convenient operation and low cost, and has extremely fast reliability. In addition, the method can be widely used in the detection of the large incomplete arcs in other industries, and has the promotion value.

Description

technical field [0001] The invention relates to a measuring device and a measuring method for the radius of an incomplete outer arc of a rotary workpiece, belonging to the field of measuring the outer arc of a large workpiece. Background technique [0002] In the engine manufacturing industry, it is often encountered that the outer arc of a large workpiece is incomplete and large. When measuring, it is often difficult to find the largest true value of the outer arc due to the large and incomplete outer arc of the workpiece during measurement. Sometimes It is necessary to measure multiple outer arcs to obtain their average value, even if the measurement result deviates from the true value, the error is very large. In view of this situation, a method for measuring the outer arc of a large-scale rotary workpiece is proposed, and the true value of the outer arc of the measured workpiece can be approximated by indirect measurement and conversion. No relevant public literature ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/10
CPCG01B21/10
Inventor 晁欣赵亮李婷婷叶忠宇刘烈萍郝晓萍贺敏岐高林军
Owner AECC AVIATION POWER CO LTD
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