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3D printing manufacturing method for surface micro-texture of friction pair

A production method and 3D printing technology, applied in the directions of additive manufacturing, process efficiency improvement, additive processing, etc., can solve the problems of insignificant anti-friction effect and high production cost, and achieve the effect of wide application range and high production efficiency.

Active Publication Date: 2021-01-29
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Analyzing the existing technology, the method of reducing friction and reducing wear by improving the precision of the contact surface will be limited by production conditions and machining accuracy, and the higher the machining accuracy, the higher the production cost, and the friction reduction effect is not obvious

Method used

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  • 3D printing manufacturing method for surface micro-texture of friction pair
  • 3D printing manufacturing method for surface micro-texture of friction pair
  • 3D printing manufacturing method for surface micro-texture of friction pair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The 3D printing method of implementing the micro-texture on the surface of the friction pair is applied to the vane of the vane pump or motor. The shape of the micro-texture is fish scale, see the attached figure 1 , 1 is a blade with fish scale microtexture, the surface of the blade is covered with fish scale microtexture, the depth is 0.04mm, the width (laser beam spot diameter) is 0.2mm, and the interval between two textures is 1.5mm. Use a CNC grinder to treat the surface of the friction pair, clean the oxide and rust on the surface of the raw material plate of the blade, and make the surface of the raw material plate of the blade smooth and bright; use the computer 3D CAD software to make the scale micro-texture required on the surface of the raw material plate of the blade. Draw to obtain the three-dimensional model of the fish scale micro-texture, and then use a series of small triangle planes to approximate the irregular surface on the model, so as to obtain the ...

Embodiment 2

[0030] The 3D printing method of implementing the microtexture on the surface of the friction pair is applied to the valve plate 2 with a cylindrical microtexture, the shape of the microtexture is cylindrical, see the attached figure 2 , the contact surface between the valve plate and the cylinder body is covered with cylindrical micro-textures, the depth is 0.02mm, and the area is 0.1mm 2 , occupying an area ratio of 15%. The cylindrical micro-texture on the surface of the valve plate stores a certain amount of oil to increase the thickness of the oil film and increase the supporting force of the oil film, thereby reducing friction and wear. The manufacturing method of the cylindrical micro-texture on the surface of the required friction pair Same as Example 1.

Embodiment 3

[0032] The 3D printing method of implementing the micro-texture on the surface of the friction pair is applied to the contact surface between the inner and outer ring of the roller (ball) bearing and the roller (ball). The shape of the micro-texture is rhombus, see the attached image 3 And attached Figure 4 , 3 is the inner ring of roller bearing with rhombic micro-texture, 4 is the outer ring of roller bearing with rhombic micro-texture. structure, the area ratio is 15%, and the area of ​​micro-texture is 0.2mm2 , the depth is 0.02mm, and the manufacturing method of the rhombic micro-texture on the surface of the desired friction pair is the same as that in Example 1.

[0033] In summary, this method provides a 3D printing manufacturing method for the surface micro-texture of the friction pair, which overcomes some deficiencies and limitations of the friction pair in the background technology, improves the lubrication performance of the friction pair, and improves the frict...

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Abstract

A 3D printing manufacturing method for the micro-texture of the surface of the friction pair, the method is to use a numerical control grinding machine to process the surface of the friction pair of the component to be processed, and draw the three-dimensional model of the micro-texture of the surface of the friction pair required by computer three-dimensional CAD software, The three-dimensional model is approximated by small triangles to obtain an approximate model; the approximate model is divided into a series of thin slices along the height direction, the contour information is extracted and processed, and the NC program is generated; then the NC program is imported into the robot control device and the clamping device Fix the component to be processed on the workbench, spread a certain thickness of metal powder on the surface of the component to be processed, and the laser device is driven by the manipulator control device to perform laser sintering on the component to be processed according to the predetermined trajectory to form the required micro-texture on the surface of the friction pair. Effectively improve the wear resistance and anti-friction performance of the friction surface.

Description

technical field [0001] The invention relates to a production method for friction reduction and anti-wear of a friction surface, in particular to a 3D printing production method for micro-texture on the surface of a friction pair. Background technique [0002] Hydraulic transmission technology is widely used in the industrial field. Vane pumps and vane motors are also frequently used hydraulic components. Among them, the friction pair between the vane and the rotor, as well as the friction pair of the valve plate of the plunger pump and the cylinder block are all hydraulic components. The key friction pair of the device is the most prone to wear and failure. Its quality directly affects the noise, flow and volumetric efficiency of hydraulic pumps and hydraulic motors. Under heavy load conditions, the friction pair formed by the inner and outer rings of the roller bearing and the roller is also a friction pair that is easy to wear and damage, and its quality also directly affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y10/00B22F5/00
CPCB22F5/00B33Y10/00B22F10/00B22F10/66B22F12/41B22F12/63B22F10/28B22F10/36B22F12/10B22F10/68Y02P10/25
Inventor 权龙秦涛谢学斌王波
Owner TAIYUAN UNIV OF TECH
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