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Device and method for measuring edge equivalent fillet of inner ring groove

A technology of measuring device and measuring method, applied in the direction of measuring device, using fluid device, instrument, etc., can solve the problem of inability to quantitatively measure the functional edge equivalent fillet of inner ring groove and so on

Active Publication Date: 2019-09-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the functional edge equivalent fillet of the inner ring groove cannot be quantitatively measured at present, and propose a measuring device and method for the edge equivalent fillet of the inner ring groove

Method used

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  • Device and method for measuring edge equivalent fillet of inner ring groove
  • Device and method for measuring edge equivalent fillet of inner ring groove
  • Device and method for measuring edge equivalent fillet of inner ring groove

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0027] Specific implementation mode one: as figure 1 As shown, an inner ring groove edge equivalent fillet measuring device includes:

[0028] Air supply equipment 1, manual ball valve 2, air filter 3, pressure reducing valve 4, pneumatic regulator 5, first pressure sensor 6, solenoid valve 7, pneumatic valve 8, pre-throttle nozzle 9, second pressure sensor 10. Special measuring fixture 11;

[0029] The output air flow end of air supply equipment 1 is connected to the air flow input end of manual ball valve 2, the air flow output end of manual ball valve 2 is connected to the air flow input end of air filter 3, and the air flow output end of air filter 3 is connected to the air flow input end of pressure reducing valve 4 end, the airflow output end of the pressure reducing valve 4 is respectively connected to the airflow input end of the pneumatic constant value device 5 and the air inlet end of the solenoid valve 7; the air outlet end of the solenoid valve 7 is connected to ...

specific Embodiment approach 2

[0034] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: if figure 2 As shown, the measurement special fixture 11 includes a spherical probe micro-feeding device 12, a test piece 13, a probe 14, a weight 15, a top pin 16, a spring 17, and an air circuit manifold 18;

[0035] The probe 14 is a slender cylinder (an end connected with a spherical probe) on the left, and a short and thick cylinder (an end fixed on the gas circuit manifold 18) on the right;

[0036] The measuring head 14 is fixed on the gas circuit integrated block 18 by screws, and the tested piece 13 is installed on the measuring head 14 through clearance fit (0-0.034mm); the tension provided by the weight 15 makes the tested piece 13 and the measuring head 14 In close contact; the diameter of the tested piece 13 is greater than the diameter of the probe 14; the tested piece 13 is set outside the cylinder of the scanning probe 14;

[0037]...

specific Embodiment approach 3

[0048] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: an O-ring 19 is provided between the measuring head 14 and the gas circuit manifold 18 .

[0049] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

An inner ring groove edge equivalent round angle measurement device and a measurement method are disclosed. The invention relates to the inner ring groove edge equivalent round angle measurement device and the measurement method. The device and the method are used to solve a problem that an inner ring-groove functional edge equivalent round angle can not be quantitatively measured at present. Thedevice comprises air feed equipment, a manual ball valve, an air filter, a pressure reducing valve, a pneumatic setter, a first pressure sensor, a solenoid valve, a pneumatic valve, a front throttle nozzle, a second pressure sensor and a special measurement fixture. By using the device, according to Q1 and Q2, a single point narrow slit opening degree zi of an ith measuring point of an inner ringgroove working edge is acquired; an intermediate variable Yi is introduced, and a curve in which the zi is taken as an abscissa and the Yi is taken as an ordinate is drawn; and a least square method is adopted to carry out linear fitting on the zi and the Yi, and finally a measured edge equivalent round angle radius r1 is acquired, wherein the r1 satisfies the following equation: r1=L-r2. The device and the method are used for the electro-hydraulic servo valve manufacturing field.

Description

technical field [0001] The invention relates to a measuring device and a measuring method for the edge equivalent fillet of an inner ring groove. Background technique [0002] In the manufacturing process of the electro-hydraulic servo valve, the matching grinding of the valve core and valve sleeve is a key process in the servo valve manufacturing process. Aerospace servo valves have very strict requirements on the overlapping amount (also known as "lapping amount", "covering amount" or "covering amount") of the spool valve pair, usually 2-4 μm, and the tolerance is ±1 μm. The process of blending and grinding is actually to repeatedly measure the blending amount and grind the valve core until the design requirements are met. The functional edge of the high-flow servo valve sleeve is in the form of an inner ring groove, which requires sharp edges. However, after the edge deburring operation, local collapse and rounded corners will appear, which has a great impact on the stac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B13/16G01B13/18
Inventor 张翔潘旭东李跃峰杨增辉王广林王慧峰邵东向
Owner HARBIN INST OF TECH