Ultrasonic torsional vibration device

Abstract

The present invention discloses an ultrasonic torsional vibration device, comprising a first circular ring made of magnetostrictive material, a second circular ring made of metal material and a horn made of metal material, the second circular ring is sleeved on the outside of the horn and tightly fitted, the first circular ring is sleeved on the outside of the second circular ring and tightly fitted, the second circular ring is evenly provided with a plurality of radial inclined grooves with an angle with the radial direction in the circumferential direction, when the magnetostrictive material of the first circular ring is excited, radial waves are generated, the radial waves pass through the inclined grooves to generate new radial waves and transverse waves, the two waves synthesize a circumferential component wave to make the second circular ring perform an in-plane rotational motion, the circumferential wave component of the second circular ring is transmitted to the output end along the axial direction through the horn, so that the resonant mode of the entire torsional vibration device is a torsional mode. The present invention can achieve torsional output through the inclined groove structure.

Description

Technical Field

[0001] The invention relates to an ultrasonic machining device, in particular to an ultrasonic torsional vibration device. Background Art

[0002] Ultrasonic machining is a machining method that applies high-frequency vibration to the tool or workpiece. Due to its characteristics of low cutting force, high surface quality, and low tool wear, it has been widely used in the machining of hard and brittle materials and difficult-to-machine materials. Early rotary ultrasonic vibration machining generally used longitudinal ultrasonic vibration. Ordinary longitudinal ultrasonic motion has a large axial impact, and generally only diamond abrasive tools can be used, which has great limitations in application. Longitudinal-torsional ultrasonic vibration is not affected by the machining tool, and carbide tools and diamond abrasive tools can be used. However, the device that realizes longitudinal-torsional vibration in longitudinal-torsional ultrasonic vibration has problems such as difficult to control the longitudinal-torsional ratio, large axial vibration that easily causes tool breakage and wear, and low longitudinal-torsional conversion efficiency. Based on the above situation, in ultrasonic milling, ultrasonic grinding and other processes, it is hoped to eliminate or control the axial vibration of the tool. The torsional vibration device that realizes torsional output of the tool can solve the above problems.

[0003] However, there are currently two types of devices that achieve torsional output. One is to use tangentially polarized piezoelectric ceramics to achieve torsional vibration through shear deformation; the other is to use the Wiedemann effect to apply longitudinal and circumferential magnetic fields to magnetostrictive materials, causing them to expand and contract along the axial direction while exciting torsional waves. However, the polarization process of tangentially polarized ceramic sheets is complicated, the device stability is poor, and it is difficult to achieve high-power output; magnetostrictive devices using the Wiedemann effect must be excited by magnetic fields in two directions, and magnetostrictive materials also need to be oriented. In manufacturing, there are certain difficulties in controlling the magnetic field and orienting the material. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an ultrasonic torsional vibration device, which realizes the torsional output of the torsional vibration device by setting an inclined groove structure.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide an ultrasonic torsional vibration device, including a first ring made of magnetostrictive material, a second ring made of metal material and a horn made of metal material, the second ring is sleeved on the outside of the horn and tightly fitted, the first ring is sleeved on the outside of the second ring and tightly fitted, the second ring is evenly provided with a plurality of radial inclined grooves with an angle with the radial direction in the circumferential direction, when the magnetostrictive material of the first ring is excited, radial waves are generated, the radial waves pass through the inclined grooves to generate new radial waves and transverse waves, the two waves synthesize a circumferential wave component to make the second ring perform an in-plane rotational motion, the circumferential wave component of the second ring is transmitted to the output end along the axial direction through the horn, so that the resonant mode of the entire torsional vibration device is a torsional mode.

[0006] Preferably, the inclined groove is opened on the second circular ring, along the radial direction of the second circular ring and at the angle, and passes through the upper and lower surfaces of the second circular ring.

[0007] Preferably, the inclined groove also passes through the outer circumferential surface or the inner circumferential surface of the second circular ring.

[0008] Preferably, the inclined groove is opened on the second circular ring, along the radial direction of the second circular ring and at the angle, and passes through the inner and outer circumferential surfaces of the second circular ring.

[0009] Preferably, the inner circumferential surface or the outer circumferential surface of the second circular ring is further provided with a closed wall, so that the inclined groove becomes a blind hole leading to the inner circumferential surface or the outer circumferential surface of the second circular ring.

[0010] Preferably, the inclined groove extends from the second circular ring radially and at the angle to the amplitude transformer.

[0011] Preferably, a plurality of holes are punched on the first circular ring along the thickness direction of the first circular ring to serve as winding holes.

[0012] Preferably, the first circular ring is a circular ring with a quadrilateral cross section, and the circular ring is any one of a whole circular ring, a circular ring formed by gluing together a plurality of sectors, or a circular ring sheet.

[0013] Preferably, the second ring and the horn are made into a whole.

[0014] The present invention also proposes an ultrasonic torsional vibration device, comprising a first circular ring made of magnetostrictive material and a horn made of metal material, wherein the first circular ring is sleeved on the outside of the horn and is tightly fitted, and the horn is evenly provided with a plurality of radial oblique grooves with an angle to the radial direction in the mating part of the horn that is sleeved with the first circular ring, and when the magnetostrictive material of the first circular ring is excited, radial waves are generated, and the radial waves pass through the oblique grooves to generate new radial waves and transverse waves, and the two waves synthesize a circumferential wave component to make the horn perform an in-plane rotational motion in the mating part of the horn that is sleeved with the first circular ring, and the circumferential wave component is transmitted axially to the output end through the horn, so that the resonant mode of the entire torsional vibration device is a torsional mode.

[0015] The present invention has the following beneficial effects: when the first circular ring made of magnetostrictive material is excited, radial waves are generated, and the radial waves pass through the inclined grooves to generate new radial waves and transverse waves. The two waves synthesize the circumferential wave component to make the second circular ring perform in-plane rotational motion. The circumferential wave component on the second circular ring is transmitted axially to the output end through the amplitude transformer, and the resonant mode of the entire torsional vibration device is a torsional mode, thereby realizing torsional output.

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the first embodiment of the present invention;

[0018] Figure 2 It is a three-dimensional diagram of the first embodiment of the present invention;

[0019] Figure 3 A top view of the first embodiment of the present invention

[0020] Figure 4 A three-dimensional diagram of the second ring of the first embodiment of the present invention;

[0021] Figure 5 A top view of the second ring of the first embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the first ring in the first embodiment of the present invention, wherein Figure 6 (a) is a whole ring, Figure 6 (b) is a ring formed by gluing together multiple sectors. Figure 6 (c) a ring formed by gluing annular sheets together;

[0023] Figure 7 It is an exploded diagram of the second embodiment of the present invention;

[0024] Figure 8 It is a stereogram of the second embodiment of the present invention;

[0025] Fig. 9 A top view of the second embodiment of the present invention

[0026] Fig.10 is a three-dimensional diagram of the second circular ring of the second embodiment of the present invention;

[0027] Fig.11 is a top view of the second ring of the second embodiment of the present invention;

[0028] Fig.12 This is a schematic diagram of the winding holes on the first circular ring of the second embodiment of the present invention;

[0029] Fig.13 It is a three-dimensional diagram of the third embodiment of the present invention;

[0030] Fig.14 A top view of the second ring and the horn portion of the third embodiment of the present invention;

[0031] Fig.15 It is a three-dimensional diagram of the fourth embodiment of the present invention;

[0032] Fig.16 It is a top view of the second ring and the horn portion of the fourth embodiment of the present invention;

[0033] Fig.17 It is a three-dimensional diagram of the horn of the fifth embodiment of the present invention.

[0034] The codes of the main components in the figure are: first circular ring 1, second circular ring 2, amplitude rod 3, inclined groove 4, winding hole 5, and a whole body 6 composed of the second circular ring and the amplitude rod. DETAILED DESCRIPTION

[0035] The specific implementation scheme of the device of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the device of the present invention. Based on the device of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the device of the present invention, it is necessary to understand that the terms "radial inclined groove", "grooving method", "from top to bottom", "from outside to inside", "radial wave", "torsion wave", "torsion mode" and other descriptive parameters indicated are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the inherent name of the device shown, and therefore cannot be understood as limiting the present invention.

[0037] Embodiment 1

[0038] See also Figures 1 to 6As shown, it is the first embodiment of the present invention. An ultrasonic torsional vibration device of the present invention comprises a first ring 1 made of magnetostrictive material, a second ring 2 made of metal material and an amplitude transformer 3 made of metal material, the second ring 2 is sleeved on the outside of the amplitude transformer 3 and tightly fitted, the first ring 1 is sleeved on the outside of the second ring 2 and tightly fitted, the second ring 2 is evenly provided with a plurality of radial inclined grooves 4 with an angle with the radial direction around the circumferential direction, when the magnetostrictive material of the first ring 1 is excited, a radial wave M1 is generated, the radial wave M1 passes through the inclined groove 4 to generate a new radial wave M2 and a transverse wave M3, the two waves synthesize a circumferential wave component to make the second ring 2 rotate in a plane, the circumferential wave component of the second ring 2 is transmitted to the output end along the axial direction through the amplitude transformer 3, so that the resonant mode of the whole torsional vibration device is a torsional mode.

[0039] In this embodiment, the inclined groove 4 is formed on the second circular ring 2 from top to bottom along the radial direction of the second circular ring 2 and at the angle, and the inclined groove 4 penetrates the upper and lower surfaces of the second circular ring 2. The inclined groove 4 also penetrates the outer peripheral surface of the second circular ring 2 to form an opening 41. Figure 6 As shown, in this embodiment, the structure of the first circular ring 1 can be selected from any one of a whole circular ring, a circular ring formed by gluing together a plurality of sectors, or a circular ring formed by gluing together circular ring sheets.

[0040] Embodiment 2

[0041] See also Figures 7 to 12 As shown, it is the second embodiment of the present invention, which is different from the first embodiment in that the slotting method of the inclined groove 4 is to be opened on the second circular ring 2 from the outside to the inside along the radial direction of the second circular ring 2 and at the angle, and the inner and outer peripheral surfaces of the second circular ring are penetrated to form an inner opening 42 and an outer opening 43. In this embodiment, in order to facilitate the later winding, a hole can be punched on the first circular ring 1 as a winding hole 5.

[0042] Embodiment 3

[0043] See also Fig.13 and Fig.14 As shown, it is the third embodiment of the present invention, which is different from the first embodiment in that the second ring 2 and the amplitude transformer 3 are made into a whole 6.

[0044] Embodiment 4

[0045] See also Fig.15 and Fig.16 , which is a fourth embodiment of the present invention, which is different from the second embodiment in that the second ring 2 and the amplitude transformer 3 are made into a whole 6 , and the inclined groove 4 extends from the second ring 2 to the amplitude transformer 3 .

[0046] Furthermore, in the above embodiment, when the second ring 2 and the amplitude transformer 3 are two separate parts, the second ring 2 and the amplitude transformer 3 can be made of the same or different metal materials, and the material needs to meet the requirements of small acoustic impedance and certain strength, such as 6061Al, H85 brass, 45 steel, etc.

[0047] Furthermore, in the above embodiment, when the second ring 2 and the horn 3 are two separate parts, the second ring 2 and the horn 3 can be connected by a conical surface or a key.

[0048] Embodiment 5

[0049] See also Fig.17 As shown, it is a transformer rod of Example 5 of the present invention. The present invention also provides another ultrasonic torsional vibration device, including a first ring (not shown) made of magnetostrictive material and a transformer rod 3 made of metal material. The first ring is sleeved on the outside of the transformer rod 3 and is tightly fitted. The transformer rod 3 is evenly provided with a plurality of radial inclined grooves 4 with an angle to the radial direction in the matching part sleeved with the first ring around the circumferential direction. When the magnetostrictive material of the first ring is excited, radial waves are generated. The radial waves pass through the inclined grooves 4 to generate new radial waves and transverse waves. The two waves synthesize a circumferential wave component to make the transformer rod 3 rotate in the plane at the matching part sleeved with the first ring. The circumferential wave component is transmitted to the output end along the axial direction through the transformer rod, so that the resonant mode of the entire torsional vibration device is a torsional mode.

[0050] In this embodiment, the inclined groove 4 is directly opened on the amplitude transformer 3 ; the inclined groove 4 is opened from the outside to the inside along the radial direction of the amplitude transformer 3 .

[0051] Furthermore, the structures of the inclined grooves 4 in the above-mentioned embodiments 1 to 5 can be processed into a rectangle, a wedge or a composite shape (such as a rounded rectangle).

[0052] Furthermore, the horn 3 in the above-mentioned embodiments 1 to 5 may be solid or hollow.

[0053] It can be seen that the ultrasonic torsional vibration device proposed in the present invention generates new radial waves and transverse waves through the inclined groove structure. The two waves are combined into a circumferential wave to make the second ring rotate in a plane. The circumferential wave on the second ring is transmitted axially to the output end through the amplitude rod of the torsional mode. The resonant mode of the entire torsional vibration device is the torsional mode, thereby realizing torsional output.

[0054] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. An ultrasonic torsional vibration device, comprising a first ring made of magnetostrictive material, a second ring made of metal material and a horn made of metal material, wherein the second ring is sleeved on the outside of the horn and is tightly fitted, and the first ring is sleeved on the outside of the second ring and is tightly fitted, characterized in that: The second ring is evenly provided with a plurality of radial inclined grooves which are at an angle to the radial direction in the circumferential direction. When the magnetostrictive material of the first ring is excited, radial waves are generated. The radial waves pass through the inclined grooves to generate new radial waves and transverse waves. The two waves are combined into a circumferential wave component to make the second ring rotate in a plane. The circumferential wave component of the second ring is transmitted to the output end along the axial direction through the amplitude transformer, so that the resonant mode of the entire torsional vibration device is a pure torsional mode.

2. The ultrasonic torsional vibration device according to claim 1, characterized in that: The inclined groove is opened on the second circular ring, along the radial direction of the second circular ring and at the angle, and penetrates the upper and lower surfaces of the second circular ring.

3. An ultrasonic torsional vibration device according to claim 2, characterized in that: The inclined groove also passes through the outer circumferential surface or the inner circumferential surface of the second ring.

4. The ultrasonic torsional vibration device according to claim 1, characterized in that: The inclined groove is opened on the second circular ring, along the radial direction of the second circular ring and at the angle, and penetrates the inner and outer circumferential surfaces of the second circular ring.

5. The ultrasonic torsional vibration device according to claim 4, characterized in that: The inner circumferential surface or the outer circumferential surface of the second ring is further provided with a closed wall, so that the inclined groove becomes a blind hole leading to the inner circumferential surface or the outer circumferential surface of the second ring.

6. The ultrasonic torsional vibration device according to claim 4, characterized in that: The inclined groove extends from the second circular ring along the radial direction and at the angle to the horn.

7. An ultrasonic torsional vibration device according to claim 4, 5 or 6, characterized in that: A plurality of holes are punched on the first circular ring along the thickness direction of the first circular ring as winding holes.

8. The ultrasonic torsional vibration device according to claim 1, characterized in that: The first circular ring is a circular ring with a quadrilateral cross section, and the circular ring is any one of a whole circular ring, a circular ring formed by gluing together a plurality of sectors, or a circular ring slices.

9. The ultrasonic torsional vibration device according to claim 1, characterized in that: The second ring and the horn are manufactured as a whole.

10. An ultrasonic torsional vibration device, comprising a first ring made of magnetostrictive material and a horn made of metal material, wherein the first ring is sleeved on the outside of the horn to achieve a tight fit, and characterized in that: The horn is provided with a plurality of radial oblique grooves having an angle with the radial direction evenly around the circumferential direction at the mating part of the horn sleeved with the first circular ring. When the magnetostrictive material of the first circular ring is excited, radial waves are generated. The radial waves pass through the oblique grooves to generate new radial waves and transverse waves. The two waves are synthesized into a circumferential wave component to make the horn perform an in-plane rotational motion at the mating part of the horn sleeved with the first circular ring. The circumferential wave component is transmitted to the output end along the axial direction through the horn, so that the resonant mode of the entire torsional vibration device is a pure torsional mode.

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