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A high-power multi-stage stepped horn

A horn and step-type technology, applied in the field of mechanical vibration, can solve problems such as increased processing difficulty, increased processing cost, and complex design, and achieve the effects of reducing processing difficulty, reducing processing cost, and increasing mechanical strength

Active Publication Date: 2022-05-24
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual loading process, the stepped horn is difficult to adapt to the high-power working state, and problems such as breakage of the connection between the input rod and the output rod are prone to occur during the loading process.
[0003] In order to prevent the stepped horn from breaking during the loading process, there are also horns with conical, exponential, catenary, arc and other structures, but their design is more complicated than the original one, and the processing cost has increased. Some shapes For example, the index, catenary, arc, etc. must be processed by CNC, and the processing difficulty increases, and the amplification factor is lower than that of the stepped horn. Therefore, there are deficiencies in practical applications.

Method used

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  • A high-power multi-stage stepped horn
  • A high-power multi-stage stepped horn
  • A high-power multi-stage stepped horn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, the length L of the horn is 130mm, the number of stages of the transition section 2 is n=2, and the total length of the transition section 2 is 1 / 20 of the length L of the horn, that is, the total length of the transition section 2 is 6.5mm, the length of a single step is 3.25mm, the length of input rod 1 and output rod 3 are both equal to 61.75mm, and the diameter of input rod 1 is D r Take 0.4 times the length L of the horn, which is 52mm, and the diameter D of the section 3 of the output rod e Take 16mm, the diameter D of the two steps in the middle transition section 2 1 , D 2 The uniform changes are taken as 40mm and 28mm respectively.

[0040] The material for making the horn is 45# steel. Calculated by analytical method, the longitudinal vibration frequency is 20.6kHz, the amplification factor M p = 10.5.

[0041] Using ANSYS finite element calculation, the longitudinal vibration frequency is 19.2kHz, the amplification factor is 9.9, and ...

Embodiment 2

[0044] In this embodiment, the length L of the horn is unchanged at 130 mm, and the cross-sectional diameters of the input rod 1 and the output rod 3 are not changed to 26 mm and 8 mm. The number of steps in the transition section 2 is n=5, and the total length of the transition section 2 is 1 / 13 of the horn length L, which is 10mm, then the length of a single step is 2mm, and the lengths of the input rod 1 and the output rod 3 are both equal to 60mm , the steps of the intermediate transition section 2 change uniformly, and the cross-sectional diameter D of the five steps of the intermediate transition section 2 1 , D 2 , D 3 , D 4 , D 5They are 46mm, 40mm, 34mm, 28mm, and 22mm in turn.

[0045] The material for making the horn is 45# steel. Calculated by the analytical method, the longitudinal vibration frequency is 20.8kHz, and the amplification factor M p = 10.4.

[0046] Using finite element calculation, the longitudinal vibration frequency is 19.5kHz, the amplifica...

Embodiment 3

[0049] In this embodiment, the length L of the horn is unchanged at 130 mm, and the cross-sectional diameters of the input rod 1 and the output rod 3 are not changed to 26 mm and 8 mm. The number of 2 stages in the transition section is n=8, and the total length of the transition section 2 is 1 / 10 of the horn length L, which is 13mm, then the length of a single stage is 1.625mm, and the lengths of input rod 1 and output rod 3 are both equal to 58.5 mm, the 2 steps in the middle transition section change evenly, the diameter D of the 28 steps in the middle transition section 1 , D 2 , D 3 , D 4 , D 5 , D 6 , D 7 , D 8 They are 48mm, 44mm, 40mm, 36mm, 32mm, 28mm, 24mm, 20mm, respectively.

[0050] The material for making the horn is 45# steel. Calculated by analytical method, the longitudinal vibration frequency is 21.0kHz, the amplification factor M p = 10.3.

[0051] Using finite element calculation, the longitudinal vibration frequency is 19.8kHz, the amplification ...

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Abstract

The invention relates to a high-power multi-stage stepped horn, which includes an input rod and an output rod. The rod, the transition section, and the output rod are coaxially arranged, and the diameter of the transition section decreases step by step; the present invention uses multi-level step gradient transition to reduce the stress gradient peak value between the input rod and the output rod, and has a high amplification factor and a long service life. Long, the design of adding a transition section greatly increases the mechanical strength that can be tolerated under high-power working conditions, and can withstand high-power input. Moreover, the invention does not require precision processing equipment, reduces processing difficulty, and greatly reduces processing costs.

Description

technical field [0001] The invention belongs to the technical field of mechanical vibration, and particularly relates to an ultrasonic horn of an ultrasonic transducer, in particular to a high-power multi-stage stepped horn. Background technique [0002] The ultrasonic vibration system is mainly composed of transducer, horn and processing tool. Ultrasonic horn is also known as ultrasonic gear lever and ultrasonic concentrator. In actual use, there are different requirements for the shape design of the horn due to different applications. In the ultrasonic vibration drilling of deep small holes and deep cavity parts and the processing of large-area workpieces, the stepped horn is the most commonly used. , because of its largest amplification factor, it is widely used in ultrasonic processing and ultrasonic processing. However, in the actual loading process, it is difficult for the stepped horn to adapt to the high-power working state, and the connection between the input rod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B3/02B06B3/04
CPCB06B3/02B06B3/04B06B2201/73
Inventor 贺西平武婷婷
Owner SHAANXI NORMAL UNIV
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