Two-dimensional vibrating table for precision ultrasonic machining

A technology of ultrasonic machining and two-dimensional vibration, which is applied in the direction of metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of large grinding force, low workpiece surface processing accuracy, low material removal rate, etc., to improve the applicable sexual effect

Pending Publication Date: 2019-01-18
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI-Extracted Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of low surface machining accuracy, large grinding force, and low material removal rate i...
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Method used

The characteristics of this kind of structure are: the single support plate of vibrating table bracing frame contacts with the bottom surface of vibrating table, while vibrating table realizes ultrasonic vibration, vibrating table bracing frame does not vibrate...
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Abstract

The invention relates to a two-dimensional vibrating table for precision ultrasonic machining. The two-dimensional vibrating table comprises two ultrasonic vibration devices, a vibration table and a clamp, wherein the two adjacent sides of the vibration table are both provided with the ultrasonic vibration devices, the two ultrasonic vibration devices are perpendicular to each other and are supported through vibration device supporting frames, the bottoms of the two vibration device supporting frames are fixedly mounted on a base, clamps are fixedly mounted on the crisscross wave node faces ofultrasonic waves emitted by the two ultrasonic vibration devices on the top face of the vibration table, a groups of clamps are adopted, and the sizes of the clamps are not too big. The vibration table achieves elliptic motion under the stimulation of the two ultrasonic vibration devices. The two-dimensional vibrating table is designed by utilizing a transducer adopting quarter-wave length, performs supporting by adopting two different supporting modes of thin-plate supporting and point supporting. The vibrating table simultaneously carries out ultrasonic vibration in two directions and performs the motion of an elliptic trajectory on the vibration table top.

Application Domain

Large fixed members

Technology Topic

Ultrasonic machiningUltrasound +4

Image

  • Two-dimensional vibrating table for precision ultrasonic machining
  • Two-dimensional vibrating table for precision ultrasonic machining
  • Two-dimensional vibrating table for precision ultrasonic machining

Examples

  • Experimental program(2)

Example Embodiment

[0028] Example 1
[0029] Such as figure 1 As shown, a vibrating table support frame is installed at the center of the bottom surface of the vibrating table. The vibrating table support frame is composed of a column 7 and a support ball 6. The support ball is fixed on the top surface of the column, and the bottom surface of the column is fixed to the base. The supporting ball is only in contact with the bottom surface of the vibrating table but not fixedly connected. The column does not press the vibrating table to move upwards, but only provides support in the Z direction.
[0030] The characteristic of this structure is that the vibrating table support frame and the vibrating table are supported by points. Since the contact surface of the vibrating table support frame and the vibrating table is very close to one point, the energy transmitted to the vibrating table support frame will be greatly reduced. It will be concentrated in the processing of the workpiece and will not cause unnecessary loss.

Example Embodiment

[0031] Example 2
[0032] Such as image 3 As shown, the vibration table support frame is fixed on the bottom side of the vibration table. The vibration table support frame is a support plate 8. The bottom surface of the support plate is fixed to the base, and the top surface of the support plate only contacts the bottom surface of the vibration table. But the connection is not fixed.
[0033] The feature of this structure is that the single support plate of the vibrating table support frame is in contact with the bottom surface of the vibrating table, and the vibrating table supports ultrasonic vibration without vibration. The Z-direction load of the vibration table is supported by a single support plate of the vibration table support frame. This structure is beneficial to reduce the influence of the vibration table support frame on the overall vibration shape of the vibration table.
[0034] The support plate supporting the vibrating table should be as thin or narrow as possible to prevent the ultrasonic wave from being transmitted downward with the support, making the amplitude less than expected and affecting the processing of the workpiece.
[0035] Comparing Example 2 with Example 1, the support is the mechanism. The point support scheme of Example 1 Because the contact surface of the support and the vibrating table is very close to one point, the energy transmitted by the ultrasonic wave to the support will be greatly reduced, and the energy will be concentrated During the processing of the workpiece, unnecessary loss will not occur, but the case 2 sheet support is completely different. The contact surface between the support and the vibrating table is a rectangle. When the vibrating table vibrates, the energy will be transferred with the support. When going to the bottom plate, a part of the ultrasonic energy will be lost, making the vibration table's amplitude less than expected, and the processing efficiency and processing accuracy of the workpiece will be affected.

PUM

no PUM

Description & Claims & Application Information

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