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Longitudinal-torsional resonance ultrasonic vibration device

A technology of ultrasonic vibration and longitudinal vibration, applied in the direction of fluid using vibration, can solve the problems of small torsional amplitude and low energy utilization efficiency, and achieve the effects of large amplitude, simple power supply form, and easy and convenient use.

Inactive Publication Date: 2016-04-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of small torsional amplitude and low energy utilization efficiency caused by the internal friction loss of most of the energy in the torsional vibration of the existing torsional vibration device used in milling, and further provides a longitudinal torsional resonance ultrasonic vibration device

Method used

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine Figure 1-Figure 4 Explain that the longitudinal-torsional resonance ultrasonic vibration device of this embodiment includes a stepped hollow cylindrical cone complex, a longitudinal-torsion conversion hollow cylinder 2, a pre-tightening bolt 1, an even number of piezoelectric ceramic sheets 9 and a plurality of electrode sheets 10; The stepped hollow cone complex is mainly composed of an axial positioning shaft 14, a cylindrical longitudinal and torsional conversion body 5, a conical torsional vibration amplifier 12 and a cylindrical longitudinal vibration amplifier 6, which are coaxially arranged in sequence and integrated;

[0015] The large-diameter end of the conical torsional vibration amplifying body 12 is connected with the cylindrical longitudinal-torsion conversion body 5, and the small-diameter end of the conical torsional vibration amplifying body 12 is connected with the cylindrical longitudinal vibration amplifying ...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 1 and image 3 Note that the sum of the central angles corresponding to the plurality of first helical grooves 5 - 1 in this embodiment is 360°. Such setting maximizes the conversion efficiency of longitudinal torsion, makes the nodal surface of torsional vibration coincide with the nodal surface of longitudinal vibration, and balances the torsional momentum of the stepped hollow cylinder-cone complex and the hollow cylinder for longitudinal torsion conversion; it is installed at the end nodal surface, The torsional vibration of the structure does not affect the installation structure (such as the spindle of the machine tool); it is installed at the end section surface, so that the installation method will not affect the torsional vibration of the structure, and the torsional vibration mode of the structure can be used more efficiently. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 and Figure 4 Note that the sum of the central angles corresponding to the plurality of second helical grooves 2 - 1 in this embodiment is 360°. Such setting maximizes the conversion efficiency of longitudinal torsion, makes the nodal surface of torsional vibration coincide with the nodal surface of longitudinal vibration, and balances the torsional momentum of the stepped hollow cylinder-cone complex and the hollow cylinder for longitudinal torsion conversion; it is installed at the end nodal surface, The torsional vibration of the structure does not affect the installation structure (such as the spindle of the machine tool); it is installed at the end section surface, so that the installation method will not affect the torsional vibration of the structure, and the torsional vibration mode of the structure can be used more efficiently. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a longitudinal-torsional resonance ultrasonic vibration device, and relates to the field of ultrasonic processing and precise cutting. The problems that when an existing torsional vibration device applied to milling machining carries out torsional vibration, internal friction of a material loses most energy, and consequently, the torsional amplitude is small, and the energy utilization efficiency is low are solved. The device comprises a ladder type hollow cylinder cone composite body, a longitudinal-torsional conversion hollow cylinder, a pre-tightening bolt, the even number of piezoelectric ceramic pieces and a plurality of electrode pieces; the ladder type hollow cylinder cone composite body is mainly composed of an axial locating shaft, a cylindrical longitudinal-torsional conversion body, a conical torsional vibration amplifying body and a cylindrical longitudinal vibration amplifying body which are coaxially and sequentially arranged and are manufactured into a whole; and the ladder type hollow cone composite body, the longitudinal-torsional conversion hollow cylinder body, the even number of piezoelectric ceramic pieces and the electrode pieces are connected together through the pretightening bolt. The longitudinal-torsional resonance ultrasonic vibration device is used for ultrasonic vibration machining.

Description

technical field [0001] The invention relates to the fields of ultrasonic machining and precision cutting, in particular to ultrasonic vibration milling, drilling, grinding and other rotary ultrasonic machining devices. Background technique [0002] In recent years, many hard and brittle materials such as silicon-based materials, ceramic materials, composite materials, some high-strength metals and some weak stiffness structures, deep and small hole structures, etc. have been used more and more in the mechanical field, and it is very difficult to use traditional processing. The processing cost is very high or cannot be processed, and ultrasonic vibration processing can reduce cutting force and cutting temperature, reduce tool wear, and strengthen the rigidity of processed parts or tools, making it widely used in the processing of such materials and structures. The current research on ultrasonic machining is mainly applied in the form of bending vibration and longitudinal vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
CPCB06B1/06
Inventor 陈时锦吴陈军孙雪
Owner HARBIN INST OF TECH
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