CN218254196U

CN218254196U - Ultrasonic knife handle

Info

Publication number: CN218254196U
Application number: CN202222529702.1U
Authority: CN
Inventors: 赵学奇; 马原; 许超
Original assignee: Shenzhen Qingding Equipment Co ltd
Current assignee: Shenzhen Qingding Equipment Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-10
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses an ultrasonic wave handle of a knife, including ultrasonic vibration unit, handle of a knife and fastening unit, wherein the front end of handle of a knife is equipped with the cavity, the rear end of ultrasonic vibration unit is passed through fastening unit fixed connection is in the cavity, the ultrasonic vibration unit includes ultrasonic vibration module, amplitude transformer and cutter, ultrasonic vibration module fixed connection be in the rear end of amplitude transformer, cutter fixed connection be in the front end of amplitude transformer, wherein the ultrasonic vibration unit is under the ultrasonic vibration state have two at least amplitudes for the nodal of zero on the amplitude transformer. The utility model discloses an ultrasonic wave handle of a knife also can set up the required frequency of ultrasonic vibration unit resonance more than 20KHz when the ultrasonic vibration module of adoption major diameter, has ensured ultrasonic vibration unit during operation noiselessness.

Description

Ultrasonic knife handle

Technical Field

The utility model relates to an ultrasonic machining technical field especially relates to an ultrasonic wave handle of a knife.

Background

Ultrasonic machining is a special machining technology for gradually crushing the surface of a workpiece material, the ultrasonic machining utilizes high-frequency small-amplitude vibration generated by an ultrasonic knife handle to drive a machining cutter to vibrate, the cutter continuously hammers the surface of the workpiece through high-frequency vibration when a part is machined, so that the surface material of the part is gradually crushed, and crushed particle materials are taken away through circulating flow of cooling liquid and are commonly used for milling, drilling, turning and polishing.

The ultrasonic knife handle mainly comprises an ultrasonic vibration unit and a knife handle part; the conventional ultrasonic knife handle mostly adopts specially-made parts to fix the ultrasonic vibration unit on the knife handle part, so that the ultrasonic vibration unit has the hidden trouble of circumferential rotation relative to the knife handle when the ultrasonic knife handle works. When the ultrasonic vibration unit adopts piezoelectric ceramics with large diameter, the frequency required by the resonance of the ultrasonic vibration unit is difficult to be kept above 20KHz, so that the ultrasonic vibration unit generates noise audible by human ears when working.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses an ultrasonic wave handle of a knife also can set up the required frequency of ultrasonic vibration unit resonance more than 20KHz when the ultrasonic vibration module of adoption major diameter, has ensured ultrasonic vibration unit during operation noiselessness.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses an ultrasonic wave handle of a knife, including ultrasonic vibration unit, handle of a knife and fastening unit, wherein the front end of handle of a knife is equipped with the cavity, the rear end of ultrasonic vibration unit is passed through fastening unit fixed connection is in the cavity, the ultrasonic vibration unit includes ultrasonic vibration module, amplitude transformer and cutter, ultrasonic vibration module fixed connection be in the rear end of amplitude transformer, cutter fixed connection be in the front end of amplitude transformer, wherein the ultrasonic vibration unit is under the ultrasonic vibration state have two at least amplitudes for the node of zero on the amplitude transformer.

Preferably, a flange is arranged at the outer circumference of the horn and fixedly connected between the handle and the fastening unit so that the rear end of the horn is fixedly connected in the cavity through the fastening unit, wherein the flange is located at one node with zero amplitude.

Preferably, a plurality of uniformly distributed spiral grooves are formed in the outer circumference of the amplitude transformer on the front side of the flange.

Preferably, the number of the spiral grooves is 4 to 8.

Preferably, be located on the width of cloth pole flange front side is equipped with first outer circumference portion and second outer circumference portion respectively from the back to the front, the diameter of first outer circumference portion is greater than the diameter of second outer circumference portion, just first outer circumference portion with be equipped with the first transition portion of constituteing by two at least circular arcs between the second outer circumference portion, the front end of first transition portion with form the step portion between the rear end of second circumference portion, step portion department is equipped with the second transition portion of constituteing by two at least circular arcs.

Preferably, the radius of the circular arc constituting the second transition portion is 0.5mm to 1.5mm.

Preferably, the ultrasonic knife handle further comprises a sealing ring, a sealing groove is formed in the contact surface of the knife handle and the flange, and the sealing ring is arranged in the sealing groove.

Preferably, the ultrasonic knife handle further comprises a pin, a pin blind hole is formed in the contact surface of the knife handle and the flange, a pin through hole is formed in the flange, and the pin penetrates through the pin through hole and then is matched with the pin blind hole to circumferentially fix the amplitude transformer and the knife handle.

Preferably, the ultrasonic vibration unit still includes back shroud and screw, the ultrasonic vibration module includes a plurality of electrode slices and a plurality of piezoceramics piece, and is a plurality of electrode slice and a plurality of piezoceramics piece are coaxial and along axial NULL at the back shroud with between the amplitude transformer, the screw passes back shroud, a plurality of electrode slice and a plurality of behind the piezoceramics piece with the screw hole fixed connection that the rear end of amplitude transformer set up, in order to be a plurality of electrode slice and a plurality of piezoceramics piece fixed connection be in the rear end of amplitude transformer.

Preferably, the ultrasonic vibration unit further comprises a collet chuck and a nut, and the cutter is fixedly connected to the front end of the horn through the collet chuck and the nut.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses an ultrasonic wave handle of a knife, ultrasonic vibration unit wherein has two at least amplitudes for zero node under the ultrasonic vibration state on the amplitude transformer, can reduce the influence of amplitude transformer front end spiral groove undercutting quality to amplitude transformer own rigidity, increase the rigidity of amplitude transformer to can make also can set up ultrasonic vibration unit resonance required frequency more than 20KHz when the ultrasonic vibration module of adoption major diameter, ensure ultrasonic vibration unit during operation noiselessness.

In a further scheme, the utility model discloses still have following beneficial effect:

(1) The flange of the amplitude transformer is positioned at a node with zero amplitude, so that the ultrasonic vibration can be prevented from being transmitted to a machine tool main shaft connected behind the flange through the tool holder.

(2) A plurality of spiral grooves can be arranged on the outer circumferential surface of the front part of an amplitude transformer flange in the ultrasonic vibration unit, and the ultrasonic vibration unit can generate different longitudinal-torsional vibration amplitude ratios by adjusting the parameters of the spiral grooves; or the spiral groove is cancelled, so that the ultrasonic vibration unit outputs single longitudinal vibration.

(3) The large diameter and the small diameter of the front end of the amplitude transformer are gradually transited through a first transition part consisting of at least two sections of circular arcs and a second transition part consisting of at least two sections of circular arcs, so that stress concentration at the amplitude transformer can be reduced when the ultrasonic vibration unit is subjected to ultrasonic vibration, and energy loss of ultrasonic waves in the transmission process of the amplitude transformer is reduced.

(4) The sealing groove is formed in the contact surface of the cutter handle and the flange, and the sealing ring is arranged in the sealing groove, so that the inner waterproof performance of the cutter handle is more excellent.

(5) The connection position of the tool handle and the flange is fixedly connected in a matched mode through the pin, and the problem that the ultrasonic vibration unit rotates relative to the tool handle in the circumferential direction can be solved.

Drawings

FIG. 1 is a schematic structural diagram of an ultrasonic scalpel handle disclosed in a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of the ultrasonic vibration unit in fig. 1;

FIG. 3 is a schematic view of the construction of the horn of FIG. 2;

fig. 4 is a partial schematic view of the ultrasonic scalpel handle of fig. 1.

Detailed Description

The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed function or a circuit/signal communication function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings to facilitate description of the embodiments of the invention and to simplify description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular manner of operation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in figure 1, the utility model discloses an ultrasonic wave handle of a knife, by ultrasonic vibration unit 1, handle of a knife 2, gland 3, sealing washer 4 and pin 5 constitute. Referring to fig. 2, the ultrasonic vibration unit 1 is composed of a screw 100, a back cover plate 101, a piezoelectric ceramic 102, electrode pads 103, a horn 104, a collet chuck 105, a nut 106, and a cutter 107, wherein a plurality of electrode pads 103 and a plurality of piezoelectric ceramic plates 102 are coaxially and axially and alternately arranged between the back cover plate 101 and the horn 104, the screw 100 penetrates through the back cover plate 101, the plurality of electrode pads 103, and the plurality of piezoelectric ceramic plates 102 and then is fixedly connected with a rear end threaded hole of the horn 104, and the plurality of electrode pads 103 (copper electrodes) and the plurality of piezoelectric ceramic plates 102 are fastened between the back cover plate 101 and the horn 104. The gland 3 is in threaded fit with the handle 2 to fix the flange 1041 of the horn 104 on the handle 2, and the cutter 107 is connected to the front end of the horn 104 through the collet chuck 105 and the nut 106. Specifically, the front end of the tool shank 2 is provided with a cavity, and the screw 100, the back cover plate 101, the piezoelectric ceramic 102, the electrode plate 103, and the flange 1041 of the horn 104 in the ultrasonic vibration unit 1 are all fixed in the cavity through the gland 3.

As shown in fig. 3, a plurality of uniformly distributed spiral grooves are formed on the outer circumferential surface of the front portion of the flange 1041 of the horn 104, wherein the ultrasonic vibration unit 1 (ultrasonic transducer) can generate different longitudinal-torsional vibration amplitude ratios by adjusting parameters of the spiral grooves; or the spiral groove is eliminated, so that the ultrasonic vibration unit 1 outputs single longitudinal vibration. Specifically, the number of the spiral grooves may be plural, preferably 4 to 8. Become width of cloth pole 104 for adding the edition width of cloth pole (wherein add the edition width of cloth pole and be for the width of cloth pole of the ultrasonic transducer single node among the prior art that adds, the utility model discloses the extension width of cloth pole that indicates ultrasonic transducer has the width of cloth pole of two at least vibrations for the node of zero), be equipped with external screw thread 1042 on the outer circumference of width of cloth pole 104 front end path, the big footpath of flange 1041 front end of width of cloth pole 104 passes through the transition of two big circular arcs of R1 and R2, will become width of cloth pole 104 diameter and progressively reduce to become width of cloth pole 104 front end little step and stop, become width of cloth pole 104 front end little step and be equipped with two small fillet of R3 and R4 (the radius scope of two small fillet is 0.5mm ~ 1.5mm respectively), can prevent corner stress concentration through setting up two small fillet of R3 and R4.

The lengthening structure of the amplitude transformer 104 enables the ultrasonic vibration unit 1 to have two nodes with zero amplitude in an ultrasonic vibration state, reduces the influence of the hollowing quality of the spiral groove at the front end of the amplitude transformer on the rigidity of the amplitude transformer, and increases the rigidity of the amplitude transformer. The node of the ultrasonic vibration unit 1, which is located at the front in the ultrasonic vibration state and has zero amplitude, is designed at the position of the fixed flange 1041 of the horn 104, so that the ultrasonic vibration can be prevented from being transmitted to the machine tool spindle connected behind through the tool shank via the flange 1041. When the ultrasonic vibration unit 1 has two wave sections with zero amplitude in the ultrasonic vibration state, the frequency required by the resonance of the ultrasonic vibration unit 1 is maintained above 20KHz, and the working of the ultrasonic vibration unit 1 is further ensured to be free of noise. The large diameter and the small diameter at the front end of the amplitude transformer 104 are gradually transited through an arc (wherein the purpose of R1 and R2 is that the large diameter and the small diameter at the front end of the amplitude transformer 104 are gradually transited through an arc, and the radius ranges of R3 and R4 are required to be 0.5 mm-1.5 mm), so that the stress concentration at the position of the amplitude transformer 104 is reduced when the ultrasonic vibration unit 1 vibrates ultrasonically, and the energy loss of ultrasonic waves in the transmission process through the amplitude transformer 104 is reduced.

As shown in fig. 4, a sealing groove 201 is provided on the contact surface between the tool shank 2 and the flange 1041 of the horn 104, so as to embed the sealing ring 4, thereby enhancing the waterproof performance inside the tool shank 2. A pin blind hole 202 is further formed in the contact surface between the tool shank 2 and the flange 1041 of the horn 104, and a pin through hole 10411 is formed in the flange 1041 of the horn 104. The pin 5 penetrates through the pin through hole 10411 of the amplitude transformer 104 to be matched with the pin blind hole 202 of the tool shank 2, so that the amplitude transformer 104 and the tool shank 2 are circumferentially fixed, and the problem of circumferential rotation of the ultrasonic vibration unit 1 relative to the tool shank 2 is solved.

The utility model discloses the ultrasonic wave handle of a knife that preferred embodiment discloses also can set up the required frequency of ultrasonic vibration unit resonance more than 20KHz when the piezoceramics piece of adoption major diameter to ultrasonic vibration unit during operation noiselessness has been ensured. And meanwhile, the hidden danger that the ultrasonic vibration unit rotates circumferentially relative to the tool handle when the ultrasonic tool handle works is eliminated.

Wherein, "preceding" among the technical scheme of the utility model is the direction at cutter place among the integrated device, "back" indicates the direction at handle place among the integrated device.

The background section of the present invention may contain background information about the problems or environments of the present invention rather than describing the prior art by others. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific/preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, a plurality of alternatives or modifications can be made to the described embodiments without departing from the concept of the invention, and these alternatives or modifications should be considered as belonging to the protection scope of the invention. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "preferred embodiments," "example," "specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. Although embodiments of the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an ultrasonic wave handle of a knife, its characterized in that includes ultrasonic vibration unit, handle of a knife and fastening unit, wherein the front end of handle of a knife is equipped with the cavity, the rear end of ultrasonic vibration unit is passed through fastening unit fixed connection is in the cavity, the ultrasonic vibration unit includes ultrasonic vibration module, amplitude transformer and cutter, ultrasonic vibration module fixed connection be in the rear end of amplitude transformer, cutter fixed connection be in the front end of amplitude transformer, wherein the ultrasonic vibration unit is under the ultrasonic vibration state have two at least amplitudes for zero's nodal on the amplitude transformer.

2. An ultrasonic handle according to claim 1 in which the horn has a flange at its outer circumference, the flange being fixedly connected between the handle and the fastening unit so that the rear end of the horn is fixedly connected in the cavity by the fastening unit, wherein the flange is located at one of the nodes where the amplitude is zero.

3. An ultrasonic scalpel handle as defined in claim 2 wherein the horn has a plurality of uniformly distributed helical grooves in the outer circumference of the horn forward of the flange.

4. An ultrasonic scalpel handle as defined in claim 3 wherein the number of helical flutes is 4-8.

5. The ultrasonic knife handle according to claim 2, wherein the horn is provided with a first outer circumference part and a second outer circumference part from back to front on the front side of the flange, the diameter of the first outer circumference part is larger than that of the second outer circumference part, a first transition part consisting of at least two circular arcs is arranged between the first outer circumference part and the second outer circumference part, a step part is formed between the front end of the first transition part and the rear end of the second outer circumference part, and a second transition part consisting of at least two circular arcs is arranged at the step part.

6. An ultrasonic tool shank according to claim 5 wherein the radius of the circular arc making up the second transition is 0.5mm to 1.5mm.

7. The ultrasonic knife handle according to claim 2, further comprising a sealing ring, wherein a sealing groove is formed in a contact surface of the knife handle and the flange, and the sealing ring is arranged in the sealing groove.

8. The ultrasonic knife handle according to claim 2, further comprising a pin, a pin blind hole is formed in the contact surface of the knife handle and the flange, a pin through hole is formed in the flange, and the pin penetrates through the pin through hole and then is matched with the pin blind hole to circumferentially fix the amplitude transformer and the knife handle.

9. The ultrasonic knife handle according to any one of claims 1 to 8, wherein the ultrasonic vibration unit further comprises a back cover plate and a screw, the ultrasonic vibration module comprises a plurality of electrode plates and a plurality of piezoelectric ceramic plates, the electrode plates and the piezoelectric ceramic plates are coaxial and are alternately arranged between the back cover plate and the amplitude transformer along the axial direction, and the screw penetrates through the back cover plate, the electrode plates and the piezoelectric ceramic plates and then is fixedly connected with a threaded hole formed in the rear end of the amplitude transformer, so that the electrode plates and the piezoelectric ceramic plates are fixedly connected to the rear end of the amplitude transformer.

10. An ultrasonic knife handle according to any one of claims 1 to 8 in which the ultrasonic vibration unit further comprises a collet and a nut, the knife being fixedly attached to the forward end of the horn by the collet and the nut.