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Method for positioning reading position for detecting radial pressure of piston ring

A technology for reading position and radial pressure, applied in elastic deformation meter type fluid pressure measurement, measuring device, force/torque/power measuring instrument, etc., can solve the problems of poor reliability, manual adjustment, poor measurement repeatability, etc. problem, to achieve the effect of improving the accuracy of the reading position

Inactive Publication Date: 2008-07-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. Measure the flatness of the piston ring, so as to estimate the radial pressure distribution of the ring; 4. Measure the curvature radius of a specific point in the free shape of the piston ring, and calculate the radial pressure distribution of the ring accordingly; method 3 can only be roughly qualitative analysis; Method 4 is not a direct measurement, and the results are less reliable
The second is that manual adjustment is required during the detection process, which is highly skilled and only professionals can do it
Moreover, too many human errors are introduced in the measurement process, and the repeatability of the measurement is very poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Take a thin-walled sleeve whose inner diameter corresponds to the outer diameter of the piston ring to be tested, set up a strain window on the peripheral surface of the thin-walled sleeve, and stick a sticker on the strain window for reading the piston ring. The strain gauge of the radial pressure value, and then move the piston ring down the axial direction of the thin-walled sleeve to the first reading position. The first reading position is the position where the radial pressure value changes from small to large and then starts to become small again;

[0023] Step 2: Move the piston ring from the first reading position upwards along the axial direction of the thin-walled sleeve to the second reading position. The second reading position is that the radial pressure value changes from small to large during the upward movement of the piston ring. The position where it starts to become smaller again;

[0024] Step 3: Move the piston ring down from the second rea...

Embodiment 2

[0026] Step 1: Take a thin-walled sleeve whose inner diameter corresponds to the outer diameter of the piston ring to be tested, set up a strain window on the peripheral surface of the thin-walled sleeve, and stick a sticker on the strain window for reading the piston ring. The strain gauge of the radial pressure value, and then move the piston ring down the axial direction of the thin-walled sleeve to the first reading position. The first reading position is the position where the radial pressure value changes from small to large and then starts to become small again;

[0027] Step 2: Move the piston ring from the first reading position upwards along the axial direction of the thin-walled sleeve to the second reading position. The second reading position is that the radial pressure value changes from small to large during the upward movement of the piston ring. The position where it starts to become smaller again;

[0028] Step 3: Move the piston ring down from the second rea...

Embodiment 3

[0035] Step 1: Take a thin-walled sleeve whose inner diameter corresponds to the outer diameter of the piston ring to be tested, set up a strain window on the peripheral surface of the thin-walled sleeve, and stick a sticker on the strain window for reading the piston ring. The strain gauge of the radial pressure value, and then move the piston ring down the axial direction of the thin-walled sleeve to the first reading position. The first reading position is the position where the radial pressure value changes from small to large and then starts to become small again;

[0036] Step 2: Move the piston ring from the first reading position upwards along the axial direction of the thin-walled sleeve to the second reading position. The second reading position is that the radial pressure value changes from small to large during the upward movement of the piston ring. The position where it starts to become smaller again;

[0037] Step 3: Move the piston ring down from the second rea...

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Abstract

A method for positioning a reading position in radial pressure detection of piston ring includes carrying out said detection repeatedly till accurate value is obtained in order to decrease error caused by deformation of strain window to raise detection accuracy. In said method, reading position is position that radial pressure value is changed from small to big and then changed to small again in following course of moving piston ring downwards, the moving height is decreased in following increase of moving frequency for raising operation efficiency.

Description

technical field [0001] The invention relates to a method for determining the reading position of piston ring radial pressure detection, in particular to a method for locating the reading position of piston ring radial pressure detection. Background technique [0002] Existing methods for detecting the radial pressure distribution of piston rings include: 1. using a single-point radial pressure measuring instrument to directly measure the pressure distribution of the ring; 2. using a multi-point radial pressure measuring instrument to directly measure the pressure distribution of the ring. 3. Measure the flatness of the piston ring, so as to estimate the radial pressure distribution of the ring; 4. Measure the curvature radius of a specific point in the free shape of the piston ring, and calculate the radial pressure distribution of the ring accordingly; method 3 can only be roughly qualitative Analysis; method 4 is not a direct measurement, and the reliability of the results...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L7/08G01L1/04G01L5/00
Inventor 王兴松
Owner SOUTHEAST UNIV
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