Piezoelectric ceramic drive micro feeding tool rest
A technology of piezoelectric ceramic drive and micro-feed tool holder, which is applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problem of reducing the repeat positioning accuracy and displacement resolution of the micro-feed tool holder system, and the system Low stiffness and natural frequency, affecting machining accuracy and other issues, to achieve excellent cutting performance, improve system stiffness and natural frequency, and low manufacturing cost
Active Publication Date: 2020-08-18
DALIAN NATIONALITIES UNIVERSITY
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Problems solved by technology
However, this double parallel four-bar structure makes the system stiffness and natural frequency of the micro-feed tool post lower, which reduces the repeat positioning accuracy and displacement resolution of the micro-feed tool post system, and is prone to resonance during processing, which affects Precision
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[0017] It can be seen from the drawings that the structure adopted by the present invention is that the flat-head self-sensing piezoelectric ceramic driver serves as an excitation source to provide output displacement, and the ultra-precision cutting process is realized by transferring displacement through a symmetrical cross-type flexible hinge mechanism. The leads of the piezoelectric ceramic driver are arranged on the side near the bottom, which can provide different output displacements according to the requirements. This piezoelectric ceramic micro-feed tool holder includes a diamond tool 2 in a tool base 4 with a notch at the front end of the tool holder substrate 1. In this case, the diamond tool 2 is fastened to the tool holder by two bolts i-3 In the recess of the tool base 4 at the front end of the base body 1. The diamond cutter 2 is installed in an embedded manner to reduce the mass of the moving part and improve the cutting performance. The rear end of the tool b...
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A piezoelectric ceramic drive micro feeding tool rest comprises a tool rest base body, a diamond tool is fastened in the front end of a tool base, a notch is formed in the middle portion of the tool rest base body, and a piezoelectric ceramic driver is arranged in the notch and pre-tightened through a bolt at the tail of the tool rest. Rectangular grooves are formed in the left and right of the tool rest base body, the left side is provided with a through hole, and a capacitance displacement sensor is placed and fastened through a bolt on the left side face of the tool rest base body. Symmetrically-arranged installing holes are formed in the two side edges of the tool rest base body. Symmetric crossed flexible hinges are arranged on the front side of the tool rest base body. The piezoelectric ceramic drive micro feeding tool rest is characterized in that the crossed flexible hinges are symmetrically arranged on the front side of the tool rest base body. Due to application of the technical scheme, the structure rigidity and inherent frequency of the tool rest can be improved, and the tool has the characteristics of being high in resolution, positioning precision and inherent frequency. The tool rest cutting machining performance is excellent, the structure is simple and compact, the manufacturing cost is low, and the piezoelectric ceramic drive micro feeding tool rest is suitable for being popularized in the ultraprecision machining field and can also be used for error compensation, complex hook face machining and other purposes.
Description
technical field [0001] The invention relates to a micro-feed tool holder. Background technique [0002] With the rapid development of modern science and technology, microelectronics technology, aerospace technology, optical technology, biomedical technology and other technical fields have put forward higher requirements for the processing accuracy, surface quality and processing efficiency of products. Precision and ultra-precision processing Technology has become an important pillar for the development and manufacture of high-tech products, which are widely used. Traditional processing methods cannot meet the needs of ultra-precision machining, and adding a micro-feed mechanism to the design of ultra-precision machine tools to improve the accuracy and rigidity of the machine tool feeding system is one of the effective methods to achieve ultra-precision machining. Piezoelectric driven micro-feed tool holders have the advantages of large cutting force, low cutting heat, high...
Claims
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Login to View More IPC IPC(8): B23Q1/26B23B21/00
CPCB23Q1/26
Inventor 李东明高天一胡红英谢新鹏
Owner DALIAN NATIONALITIES UNIVERSITY