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Cylinder with low friction characteristic by piezoelectricity induced piston vibration

A technology of piston vibration and low friction, which is applied in the field of reducing the friction coefficient of the cylinder and in the field of pneumatics, can solve the problems of oil pollution, volume increase, etc., and achieve the effects of easy processing, wide application prospects, and easy control

Inactive Publication Date: 2013-06-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system tends to increase in volume and is easy to introduce oil pollution

Method used

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  • Cylinder with low friction characteristic by piezoelectricity induced piston vibration
  • Cylinder with low friction characteristic by piezoelectricity induced piston vibration
  • Cylinder with low friction characteristic by piezoelectricity induced piston vibration

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0013] Specific implementation mode one: see figure 1 , figure 2 , image 3 To illustrate, this specific embodiment is composed of a cylinder assembly 1 and a plurality of piezoelectric stretchable sheets 2;

[0014] On a plane 1-1 of the piston of the cylinder assembly 1, a plurality of piezoelectric expansion sheets 2 are evenly arranged around the circumference, and the number of piezoelectric expansion sheets 2 on this plane 1-1 is ≥ 2, and each piece One plane of the piezoelectric stretch sheet 2 is connected to this plane 1-1, and on another plane 1-2 of the piston of the cylinder assembly 1, a plurality of piezoelectric stretch sheets 2 are evenly arranged around the circumference, and this plane 1- The number of the piezoelectric stretchable sheets 2 on the 2 is more than or equal to 2, and a plane of each piezoelectric stretchable sheet 2 is connected with this plane 1-2, and a plane 1-1 of the piston of the cylinder assembly 1 The positions of the multiple piez...

specific Embodiment approach 2

[0019] Specific implementation mode two: see figure 1 , figure 2 , image 3 For illustration, the difference between this specific embodiment and specific embodiment 1 is that the number of multiple piezoelectric stretchable sheets 2 set on a plane 1-1 of the piston of the cylinder assembly 1 is different from that of the cylinder assembly 1. The number of the multiple piezoelectric stretchable sheets 2 arranged on the other plane 1-2 of the piston is equal. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: see figure 1 , figure 2 , image 3 To illustrate, the difference between this specific embodiment and the first specific embodiment is that the positions of the multiple piezoelectric stretchable sheets 2 set on a plane 1-1 of the piston of the cylinder assembly 1 are relative to the position of the cylinder assembly 1. There is a circumferential misalignment angle between the positions of the plurality of piezoelectric stretchable sheets 2 arranged on another plane 1-2 of the piston, and the circumferential misalignment angle is 0 degree or π / n degree, where n is on the plane 1-1 The number of piezoelectric stretchable sheets 2. Other compositions and connections are the same as in the first embodiment.

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Abstract

The invention provides a cylinder with a low friction characteristic by piezoelectricity induced piston vibration, belonging to the technical field of pneumatics and in particular belonging to the technical field of reducing friction coefficients of cylinders. The friction coefficient of the cylinder can be reduced conveniently, quickly and flexibly. The cylinder is characterized in that a plurality of piezoelectric telescopic pieces are uniformly arranged around the periphery on one plane of a piston of a cylinder assembly, and one plane of each piezoelectric telescopic piece is connected with the corresponding plane; a plurality of piezoelectric telescopic pieces are uniformly arranged around the periphery on the other plane of the piston of the cylinder assembly, and one plane of each piezoelectric telescopic piece is connected with the corresponding plane; the telescoping directions of the piezoelectric telescopic pieces on the two planes of the piston of the cylinder assembly and the diameter of the piston of the cylinder assembly are parallel or perpendicular or form included angles alpha; and all the piezoelectric telescopic pieces are driven by alternating current. When the piezoelectric telescopic pieces input driving signals, the coefficient of friction between the piston and a cylinder barrel can be reduced.

Description

technical field [0001] The invention belongs to the technical field of pneumatics, in particular to the technical field of reducing the friction coefficient of a cylinder. Background technique [0002] The phenomenon of cylinder crawling seriously affects the smoothness of cylinder movement. In order to effectively eliminate the crawling phenomenon and improve the low-speed operation characteristics of the cylinder, a well-known method is to compensate the friction force of the cylinder by superimposing the chatter signal on the control signal, eliminating the directionality of the cylinder friction force, thereby reducing the cylinder crawling phenomenon . However, it is difficult to properly grasp the frequency and amplitude of the flutter signal in practical applications, which often brings side effects such as noise and jitter. [0003] Another method is to introduce a layer of air film between the cylinder friction pairs by using the air floating effect. The piston a...

Claims

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Application Information

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IPC IPC(8): F15B15/20
Inventor 包钢程廷海肖承丰高焓陈兴隆王维
Owner HARBIN INST OF TECH
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