Low-frictional-characteristic air cylinder with piezoelectrically actuated cylinder barrel vertically vibrating

A longitudinal vibration, low friction technology, applied in the direction of fluid pressure actuating device, etc., can solve the problems of oil pollution, increase in volume, etc., and achieve the effects of easy processing, wide application prospects, and simple structure

Inactive Publication Date: 2013-07-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system tends to increase in v

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  • Low-frictional-characteristic air cylinder with piezoelectrically actuated cylinder barrel vertically vibrating
  • Low-frictional-characteristic air cylinder with piezoelectrically actuated cylinder barrel vertically vibrating

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specific Embodiment approach 1

[0010] Specific implementation mode one: see figure 1 , figure 2 To illustrate, this specific embodiment is composed of a cylinder assembly 1 and a plurality of piezoelectric stretchable sheets 2;

[0011] On the outer circular surface of the cylinder barrel of the cylinder assembly 1, a plurality of planes 1-1 are arranged around the circumferential direction, and the number of planes 1-1 on the same circumference is ≥ 2, and each plane 1-1 is provided with One or more piezoelectric stretchable sheets 2, and the number of piezoelectric stretchable sheets 2 on each plane 1-1 is equal, and one plane of each piezoelectric stretchable sheet 2 is connected to the plane 1-1, When a plurality of piezoelectric stretch sheets 2 are arranged on each plane 1-1, all piezoelectric stretch sheets 2 on this surface are arranged along the axial direction of the cylinder barrel of the cylinder assembly 1; the piezoelectric stretch sheets 2 The expansion and contraction direction of the c...

specific Embodiment approach 2

[0016] Specific implementation mode two: see figure 1 , figure 2 To illustrate, the difference between this specific embodiment and specific embodiment 1 is that when multiple piezoelectric stretch sheets 2 are arranged on each plane 1-1, all piezoelectric stretch sheets 2 on this plane are aligned along the cylinder. The axial directions of the cylinder barrels of the assembly 1 are uniformly arranged. Other compositions and connections are the same as in the first embodiment.

[0017] Working principle: It drives the piezoelectric expansion plate 2 to make the cylinder of the cylinder assembly 1 in a state of high-frequency longitudinal vibration, and uses the anti-friction effect produced by the high-frequency longitudinal vibration of the cylinder to reduce the friction between the piston and the cylinder coefficient, so that the cylinder has low friction characteristics.

[0018] Give all piezoelectric stretchable sheets 2 a sinusoidal alternating current that is th...

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Abstract

The invention discloses a low-frictional-characteristic air cylinder with a piezoelectrically actuated cylinder barrel vertically vibrating, and belongs to the technical field of pneumatics, particularly the technical field for lowering a frictional coefficient of an air cylinder. In order to realize reduction of the frictional coefficient of the air cylinder conveniently, quickly and flexibly, a plurality of planes are arranged around the periphery of an outer circular face of a cylinder barrel of an air cylinder assembly, at least two planes are arranged on a same circle, one or more piezoelectric extension pieces are arranged on each of the planes, the numbers of the piezoelectric extension pieces are identical on each of the planes, one plane of each piezoelectric extension piece is enabled to be connected with the plane, when a plurality of piezoelectric extension pieces are arranged on each of the planes, all the piezoelectric extension pieces arranged on the plane are arranged along the axial direction of the cylinder barrel of the air cylinder assembly, and extension direction of the piezoelectric extension pieces is parallel to an axis of the cylinder barrel of the air cylinder assembly. By the low-frictional-characteristic air cylinder with the piezoelectrically actuated cylinder barrel vertically vibrating, when the piezoelectric extension pieces input a driving signal, the frictional coefficient of a piston and the cylinder barrel can be lowered.

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): F15B15/14F15B15/20
Inventor 包钢肖承丰程廷海高焓陈兴隆张宏宇
Owner HARBIN INST OF TECH
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