Displacement sensor type piezoceramic driver based on flexible mechanism

A technology of displacement sensor and piezoelectric ceramics, which is applied in the direction of metal processing machinery parts, metal processing equipment, feeding devices, etc., can solve the problems of small output displacement, inability to withstand large tension and torque, hysteresis and nonlinearity, etc., to achieve Eliminate hysteresis nonlinearity, improve overall stiffness and bandwidth, and expand the application range

Inactive Publication Date: 2013-06-12
TIANJIN UNIV
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Problems solved by technology

Piezoelectric ceramic actuators have been widely used due to their small size, fast response, low friction, and no need for lubrication. However, they also have the following disadvantages: small output displacement, inability to withstand large tension and torque, and hysteresis nonlinearity. features

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  • Displacement sensor type piezoceramic driver based on flexible mechanism
  • Displacement sensor type piezoceramic driver based on flexible mechanism
  • Displacement sensor type piezoceramic driver based on flexible mechanism

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Embodiment Construction

[0015] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0016] see Figure 1 ~ Figure 4 , a displacement sensor piezoelectric ceramic driver based on a flexible mechanism, including a flexible mechanism 2, a connecting body 3, a substrate 4, a displacement sensor 5, a tubular piezoelectric ceramic 6 and a piezoelectric ceramic sleeve 7, the flexible mechanism consists of Two parallel four-bar mechanisms 21 and 23 perpendicular to each other are composed, and the two double parallel four-bar mechanisms 21 and 23 share a central rod 22. Between adjacent rods of each of the double parallel four-bar mechanisms They are all connected by a flexible hinge 24; one end of the central rod 22 is provided with the installation position of the knife holder 1, and the other end of the central rod 22 is connecte...

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Abstract

The invention discloses a displacement sensor type piezoceramic driver based on a flexible mechanism. The piezoceramic driver comprises a flexible mechanism, connection bodies, a matrix, a displacement sensor, a tube type piezoceramic and a piezoceramic sleeve, wherein the flexible mechanism consists of two-double parallel-four bar mechanisms which are mutually vertical; the two double-parallel four-bar mechanisms share a center rod; adjacent bars of each double parallel four bar mechanism are connected through flexible hinges; one end of the center rod is provided with an installation position of a tool rest; the other end of the center rod is connected with the matrix through the piezoceramic sleeve; the tube type piezoceramic is installed in the piezoceramic sleeve; the displacement sensor installed on the matrix is arranged on inside the piezoceramic sleeve and is used for sensing a displacement signal of the center rod; the tube type piezoceramic drives the center rod; and four side bars, parallel to the center rod, in the flexible mechanism are connected with the matrix through a connecting body respectively. The displacement sensor type piezoceramic driver based on the flexible mechanism has higher rigidity, output displacement and inherent frequency.

Description

technical field [0001] The invention relates to a piezoelectric ceramic driver, in particular to a displacement sensor type piezoelectric ceramic driver based on a flexible mechanism. Background technique [0002] The micro-feed tool post system has been widely used in the field of ultra-precision machining due to its high resolution, high bandwidth and fast response. With the development of science and technology and the increasing demand in the industrial field, in recent years, The micro-feed tool holder system has also been used in the motion error compensation of precision machine tools and in the field of non-axisymmetric optical instrument processing. For a micro-feed tool post system, the research and development of the drive components has been the focus of research in recent years. The positioning accuracy and motion accuracy of the drive directly determine the performance of the micro-feed tool post system. Piezoelectric ceramic actuators have been widely used du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B21/00B23Q5/34
Inventor 李晓辰田延岭
Owner TIANJIN UNIV
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