JPH0852424A - Horn for ultrasonic processing - Google Patents

Abstract

PURPOSE:To make it possible to connect tool horns to a booster horn without rotating these tool horns. CONSTITUTION:The planar booster horn 2 is connected to the stationary horn 1. Four pieces of the planar tool horns 3 are lined up and placed at narrow spacings on the output side of the booster horn 2. These tool horns 3 and the booster horn 2 are connected by means of connecting screws 4 by inserting tools in operating holes 5. The upper parts 4a and lower threads 4b of the connecting screws 4 are formed as inverse screw threads from each other, by which the tool horns are connected to the booster born 2 without rotating tool horns 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic machining horn, and more particularly to an ultrasonic machining horn having a tool horn whose one side is close to a square having a dimension of ¼ wavelength or more of a used frequency.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a tool horn which is close to a square having one side having a size equal to or more than ¼ wavelength of a used frequency, a method of cutting out from a large metal block has been adopted.

[0003]

In the above-mentioned conventional manufacturing method, since the tool horn has to be cut out from a large metal block, the manufacturing is not easy and the cost is high, and at the same time, the output surface of a large area can be formed. There are problems that it is not easy to make the vibration displacement uniform and there is a risk of stress rupture.

The present invention has been made in view of the above circumstances, and provides an ultrasonic machining horn which is easy to manufacture, can homogenize the vibration displacement of the output surface, and is less likely to cause stress fracture. The purpose is to do.

Another object of the present invention is to provide an ultrasonic machining horn in which the driven-side horn can be easily attached and detached.

Another object of the present invention is to provide an ultrasonic machining horn which can easily and accurately perform relative positioning of the driven side horn around the connecting screw with respect to the driving side horn.

Another object of the present invention is to provide an ultrasonic machining horn in which the relative position around the connecting screw of the driven side horn with respect to the driving side horn is not displaced by an external force.

Still another object of the present invention is to provide an ultrasonic machining horn which can easily obtain a driven side horn having a wide output surface.

[0009]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a driving side horn having an input end to which ultrasonic vibration is applied; and a driven side horn having an input end facing an output end of the driving side horn. An upper screw is screwed on the driving side horn and a lower screw is screwed on the driven side horn, and a connecting screw for connecting the both horns to each other in a stationary state is respectively provided. To do.

The present invention is also characterized in that the driving side horn is constituted by a fixed horn or a booster horn, and the driven side horn is constituted by a booster horn or a tool horn.

The present invention is also characterized in that the upper screw and the lower screw of the connecting screw are reverse screws to each other.

The present invention is also characterized in that the pitches of the upper screw and the lower screw of the connecting screw are different from each other.

The present invention is also characterized in that a connecting screw operating portion is provided between the upper screw and the lower screw of the connecting screw.

The present invention is also characterized in that at least one of the driving side horn and the driven side horn is provided with an opening for operating a connecting screw.

The present invention is also characterized in that the opening is constituted by a hole drilled from the input end of the driving side horn or the output end of the driven side horn to the threaded portion of the connecting screw.

According to the present invention, at least one of the output end of the driving side horn and the input end of the driven side horn,
It is characterized in that an engaging portion for fixing the relative positions around the connecting screws of both horns is provided.

The present invention is further characterized in that a plurality of driven horns are arranged in parallel at a narrow interval including zero.

[0018]

In the present invention, the driving side horn and the driving side horn are connected to each other in a stationary state via the connecting screw.
Here, the driving side horn is a fixed horn or a booster horn, and the driven side horn is a booster horn or a tool horn.

By the way, when a booster horn is connected to a fixed horn, or when a tool horn is connected to a fixed horn, or when a tool horn is connected to a booster horn, conventionally, both male screws are provided on one horn. Since the method of connecting both horns by screwing the part to the female screw part provided on the other horn is adopted, it is necessary to rotate one horn around the screw part. Therefore, it is not easy to make the relative positional relationship between both horns at the time of completion of screwing into the planned positional relationship, and even if it is initially correct, the position can be improved by repeatedly attaching and detaching. There is also a possibility that the relationship will shift. In addition, for example, when two tool horns are connected close to each other with respect to the booster horn, the tool horns may not be able to rotate by hitting each other. In this case, the connection itself is impossible. Becomes

However, in the case of the present invention, since both horns can be connected to each other in a stationary state by using a connecting screw, it is possible to always connect both horns in an accurate relative positional relationship. Even when a plurality of driven side horns are brought close to each other and connected to the drive side horn, the driven side horn can be connected to the drive side horn without any trouble.

Further, in the present invention, a connecting screw in which the upper screw and the lower screw are reverse screws to each other is used.
Therefore, both horns can be attached and detached with a small amount of operation.

Further, in the present invention, a connecting screw in which the pitches of the upper screw and the lower screw are different from each other is used. Therefore, when the driven-side horn is removed from the drive-side horn, the connecting screw is always screwed to one of the horns, and the connecting screw is not lost.

In the present invention, the connecting screw operating portion is provided between the upper screw and the lower screw of the connecting screw. Therefore, it is not necessary to provide an opening for operating the connecting screw in any of the horns, and it is possible to further reduce the risk of stress rupture, and even when the horn is still attached to the processing device, the driven side The horn can be easily attached and detached.

Further, in the present invention, at least one of the driving side horn and the driven side horn is provided with an opening for operating the connecting screw. Therefore, the output end of the driving side horn and the input end of the driven side horn can be closely contacted and connected.

Further, in the present invention, the opening is formed by a hole drilled from the input end of the drive side horn or the output end of the driven side horn to the threaded portion of the connecting screw. Therefore, when the connecting screw is operated using a tool such as a hexagon wrench, the hole can be used as a tool guide, and the operability can be improved.

Further, in the present invention, at least one of the output end of the driving side horn and the input end of the driven side horn is provided with an engaging portion for fixing the relative positional relationship around the connecting screws of both horns. ing. Therefore, even if an external force is applied, there is no possibility that the relative positional relationship between the two horns will shift.

Further, in the present invention, a plurality of driven horns are arranged side by side at narrow intervals including zero. Therefore, the entire plurality of driven horns has the same function as a single driven horn having a large area, and it is possible to easily obtain a large driven horn in which one side has a dimension of ¼ wavelength or more of the operating frequency. In addition, the vibration displacement of the output surface can be made uniform. Also, there is little risk of stress rupture.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1A and 1B show an ultrasonic machining horn according to a first embodiment of the present invention. In the drawings, reference numeral 1 is a fixed horn, and an output end of the fixed horn 1 is , Male thread 1a
The male screw portion 1a is screwed to the female screw portion 2a provided at the input end of the plate-shaped booster horn 2 to integrally connect the horns 1 and 2. The input ends of the plurality of tool horns 3 are connected to the output end of the booster horn 2 via connecting screws 4.

Each of the tool horns 3 is shown in FIG.
As shown in (b), the tool horns 3 are arranged in parallel in a direction orthogonal to the booster horn 2 at a narrow interval, and these tool horns 3 are connected to the booster horn 2 only by rotating the connecting screw 4. It is like this.

That is, the connecting screw 4 is, as shown in FIG. 2, an upper screw 4a screwed to the booster horn 2.
And a lower screw 4b screwed to each tool horn 3 and a shaft portion 4c having a small diameter for connecting the two screws 4a and 4b. The upper screw 4a and the lower screw 4b are Reciprocal screws are formed, and an engaging hole for operating the connecting screw 4 with a tool such as a hexagon wrench (not shown) is provided at the top of the upper screw 4a through an operating hole 5 provided in the booster horn 2. 6 is provided.

As shown in FIGS. 1 (a) and 1 (b), the operation hole 5 is formed from the input end of the booster horn 2 to the threaded portion of the connecting screw 4, and the operation hole 5 is formed. It also serves as a tool guide when operating the connecting screw 4 with the tool.

Next, the operation of this embodiment will be described.
When connecting the booster horn 2 and each tool horn 3, the connecting screw 4 is first arrange | positioned between the booster horn 2 and the tool horn 3, and this connecting screw 4 is operated by hand,
Each screw 4a, 4b is slightly screwed into each horn 2, 3. Then, after that, a tool is attached to the engagement hole 6 through the operation hole 5,
The connecting screw 4 is tightened using this tool. This allows
Both horns 2 and 3 are integrally connected in a state where the output end of the booster horn 2 and the input end of the tool horn 3 are in close contact with each other.

Since the tool horns 3 can be connected to the booster horn 2 without rotating them, the tool horns 3 can be arranged side by side at a narrow interval including zero. . And, for example, in FIG.
As shown in (a), when four tool horns 3 are arranged side by side at a narrow interval, the same function as a single large tool horn having the total machined surface can be obtained. Moreover, unlike a single large tool horn, the vibration displacement of the machined surface can be made uniform, and the risk of stress rupture can be greatly reduced. Also, a tool horn 3 with a simple shape
Since a large machined surface can be obtained by combining, the manufacturing cost can be significantly reduced, and the shape and size of the machined surface can be flexibly changed. .

FIG. 3 shows a second embodiment of the present invention, in which a connecting screw 14 is used instead of the connecting screw 4 in the first embodiment.

That is, this connecting screw 14 is, as shown in FIG. 3, an upper screw 14 screwed to the booster horn 2.
a, a lower screw 14b screwed on each tool horn 3 and having a smaller diameter than the upper screw 14a, and both screws 14a, 1
4b connecting the shafts 4b and having a smaller diameter than the lower screw 14b.
c, and the top of the upper screw 14a is
An engaging hole 6 similar to the connecting screw 4 in the first embodiment is provided.

Further, as shown in FIG. 3, the upper screw 14a and the lower screw 14b are constituted by screws of the same direction (for example, both screws are right-hand screws), and the pitches of the screws are different from each other. For example, if the pitch of the upper screw 14a is P
a, and the pitch of the lower screw 14b is Pb, Pa <P
b is set. The other points are the same as those of the first embodiment.

Next, the operation of this embodiment will be described.
When connecting the booster horn 2 and each tool horn 3, first, the upper screw 14a of the connecting screw 14 is screwed into the booster horn 2. The screwing position is such that the upper end side of the lower screw 14b is inserted into the female screw of the booster horn 2 by a predetermined amount. Then, in this state, the tool horn 3 is attached to the lower side of the lower screw 14b to connect the connecting screw 14 to the booster horn 2.
Rotate in the direction to extract from.

Since the pitch Pb of the lower screw 14b is set to a value larger than the pitch Pa of the upper screw 14a, the lower screw 14b is faster than the speed at which the upper screw 14a of the connecting screw 14 comes out of the booster horn 2. Is screwed into the tool horn 3 at a higher speed, and finally, as shown in FIG.
The two horns 2 and 3 are integrally connected in a state where the output end of the tool horn and the input end of the tool horn 3 are in close contact with each other.

Even if this connecting screw 14 is used,
The same effect as that of the first embodiment can be expected, and when the tool horn 3 is removed from the booster horn 2, the connecting screw 14 is always screwed to the booster horn 2, so the connecting screw 14 is lost. There is no danger of
It is also easy to operate with tools.

FIG. 4 shows a third embodiment of the present invention. Instead of the operation hole 5 in both the embodiments, the slot 15 provided in the booster horn 2 serves as an opening for operating the connecting screws 4 and 14. It is intended to be used.

That is, as shown in FIG. 4, the booster horn 2 is provided with, for example, four slots 15 at predetermined intervals in order to equalize the vibration displacement at its output end, and each tool horn is provided. 3 is connected directly below these slots 15 via connecting screws 4 and 14. Each slot 15 is used as an operation opening when the connecting screws 4 and 14 are operated with a tool. In other respects, the configuration is the same as in the above embodiments, and the operation is the same.

Then, slot 1 of booster horn 2
Since 5 is used as the opening for operating the connecting screws 4 and 14, it is not necessary to provide a dedicated opening for operation.

FIG. 5 shows a fourth embodiment of the present invention. The operation hole 5 in the first and second embodiments.
Instead, an operation hole 25 is provided.

That is, as shown in FIG. 5, the operation hole 25 is formed from the output end of each tool horn 3 to the connecting screws 4, 1.
4 is drilled up to the threaded portion, and the connecting screws 4 and 14 are
A tool can be operated through the operation hole 25.

In other respects, the construction is the same as that of the first or second embodiment and the operation is also the same. However, since the connecting screws 4, 14 are operated from the tool horn 3 side, the connecting screws 4, 14
It goes without saying that it is necessary to screw the upper screws 4a and 14a of the above to the tool horn 3 and the lower screws 4b and 14b to the booster horn 2.

However, according to this embodiment, the first
The same effect as that of the embodiment or the second embodiment can be expected, and it can be dealt with even in the case where the tool horn 3 needs to be arranged directly below the fixed horn 1, for example.

6 and 7 show a fifth embodiment of the present invention, in which a connecting screw 34 is used in place of the connecting screw 4 in the first embodiment, and an operating hole 5 (see FIG. 1A) is used. ) Can be omitted.

That is, as shown in FIGS. 6 and 7, the connecting screw 34 includes an upper screw 34a screwed to the booster horn 2, a lower screw 34b screwed to each tool horn 3, and both of these screws. It is composed of a nut-shaped connecting screw operating portion 34c for connecting between the screws 34a and 34b. The upper screw 34a and the lower screw 34b are mutually reverse screws, and the connecting screw operating portion 34c is By attaching a tool such as a spanner (not shown), the connecting screw 34 can be operated between the booster horn 2 and the tool horn 3. In other respects, the structure is the same as that of the first embodiment and the operation is the same.

However, since it is not necessary to provide the operation holes 5 and 25 in the booster horn 2 or the tool horn 3,
In addition to being easy to process, the tool horn 3 can be attached and detached without any trouble even if there is not enough working space above the booster horn 2 or below the tool horn 3.

FIG. 8 shows a sixth embodiment of the present invention, in which the relative positional relationship around the connecting screw 4 of both horns 2 and 3 is fixed to the output end of the booster horn 2 in the first embodiment. The engaging portion 40 for this purpose is provided. In other respects, the structure is the same as that of the first embodiment and the operation is the same.

By connecting the input end of the tool horn 3 with the booster horn 2 by using the connecting screw 4 with the input end of the tool horn 3 fitted in the engaging portion 40, the connecting screw 4 of both horns 2 and 3 is rotated. The relative positional relationship between the horns 2 and 3 can be completely fixed, and there is no possibility that the positional relationship between the horns 2 and 3 will shift even if an external force is applied.

FIG. 9 shows a seventh embodiment of the present invention. The relative positional relationship around the connecting screw 34 of both horns 2 and 3 is fixed to the output end of the booster horn 2 in the fifth embodiment. Engaging portion 40 and connecting screw operating portion 34 for
Each of the operation openings 51 for operating c is provided,
When the two horns 2 and 3 are connected to each other via the connecting screw 34, the two horns 2 and 3 are directly contacted and connected. Regarding other points, the fifth
The structure is the same as that of the embodiment, and the operation is the same.

Since the engaging portion 40 is provided at the output end of the booster horn 2, the same effect as that of the sixth embodiment can be expected, and the operation opening 51 allows the connecting screw operating portion 34c. Since they are not in contact with both horns 2 and 3, even if the screwing state of the connecting screw 34 is slightly shifted up and down, both horns 2 and 3 can be brought into close contact with each other and the connection work becomes easy.

In each of the above-mentioned embodiments, the case where four tool horns 3 are connected to the booster horn 2 has been described, but the number is not limited, and the shape of each horn 2, 3 is a plate. It is not limited to the shape.

Further, in each of the above-mentioned embodiments, the case where the booster horn 2 and the tool horn 3 are connected has been described, but it is also applicable to the case where the fixed horn 1 and the booster horn 2 are connected and the fixed horn 1 is also used. It can also be applied to the case where the tool horn 3 is connected to

FIG. 10 shows a fixed horn 1 and a tool horn 3.
8 shows the eighth embodiment of the present invention applied to the case of connection with the fixed horn 1 and the tool horn 3 are connected to each other via connecting screws 4 and 14, and the tool horn 3 has An operation hole 25 similar to that of the fourth embodiment is formed, and the connecting screws 4 and 14 can be operated with a tool through the operation hole 25. The other points are the same as those of the fourth embodiment, and the operation is the same.

Then, the fixed horn 1 and the tool horn 3
Also in the case of connecting with, the same effect as in the case of connecting the booster horn 2 and the tool horn 3 can be expected.

The present invention is not limited to the above-mentioned respective embodiments, and for example, the engaging portion 40 and the operation opening 51 are provided on the tool horn 3 side, or the structures of the respective embodiments are appropriately combined. You may use it together.

[0059]

As described above, according to the present invention, the output end of the driving side horn and the input end of the driven side horn are opposed to each other, and both horns are connected to each other in a stationary state via a connecting screw. Therefore, relative positioning around the connecting screw of the driven side horn with respect to the driving side horn can be accurately performed, and even if a plurality of driven side horns are close to each other, the driving side horn is not hindered. Can be connected to.

Further, according to the present invention, since the driving horn is constituted by the fixed horn or the booster horn and the driven side horn is constituted by the booster horn or the tool horn, the booster horn and the tool horn are connected. The same effect can be obtained not only in the case of, but also in the case of connecting the fixed horn and the booster horn, and also in the case of connecting the fixed horn and the tool horn.

Further, in the present invention, since the upper screw and the lower screw of the connecting screw are mutually opposite screws, both horns can be attached and detached with a small amount of operation.

Further, according to the present invention, since the pitches of the upper screw and the lower screw of the connecting screw are different from each other, when the driven side horn is detached from the driving side horn, the connecting screw is always screwed to one of the horns. The connecting screw will not be lost.

Further, in the present invention, since the connecting screw operating portion is provided between the upper screw and the lower screw of the connecting screw, it is not necessary to provide any horn with an opening for operating the connecting screw. The risk of stress rupture can be further reduced, and the driven-side horn can be easily attached and detached even when there is not enough working space in the surroundings.

According to the present invention, since at least one of the driving side horn and the driven side horn is provided with an opening for operating the connecting screw, the output end of the driving side horn and the input end of the driven side horn. And can be closely contacted and connected.

Further, according to the present invention, since the opening is constituted by the hole drilled from the input end of the driving side horn or the output end of the driven side horn to the screwed part of the connecting screw, a hexagon wrench or the like is used. When operating the connecting screw with a tool, the hole can be used as a tool guide, and operability can be improved.

In the present invention, at least one of the output end of the driving side horn and the input end of the driven side horn,
Since the engaging portion for fixing the relative positional relationship around the connecting screws of both horns is provided, there is no possibility that the relative positional relationship of both horns will be displaced even if an external force is applied.

Further, in the present invention, since the plurality of driven horns are arranged in parallel at a narrow interval including zero, the plurality of driven horns have the same function as a single large driven horn, It is possible to easily obtain a large driven side horn whose one side has a dimension of ¼ wavelength or more of the used frequency,
Moreover, the vibration displacement of the output surface can be made uniform. Further, there is little risk of stress rupture, and a large output surface can be obtained by combining the driven horns having a simple shape, so that the processing is easy and the manufacturing cost can be greatly reduced. In addition, it is possible to flexibly deal with changes in the shape and size of the output surface.

[Brief description of drawings]

1A is a cross-sectional view showing an ultrasonic machining horn according to a first embodiment of the present invention, and FIG. 1B is a side view of FIG. 1A.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a view, corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 4 is a view corresponding to FIG. 1A showing a third embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 1A showing a fourth embodiment of the present invention.

FIG. 6 is a view, corresponding to FIG. 2, showing a fifth embodiment of the present invention.

7 is a perspective view showing details of the connecting screw of FIG. 6. FIG.

FIG. 8 is a view, corresponding to FIG. 2, showing a sixth embodiment of the present invention.

FIG. 9 is a view, corresponding to FIG. 2, showing a seventh embodiment of the present invention.

FIG. 10 is a view, corresponding to FIG. 1 (a), showing an eighth embodiment of the present invention.

[Explanation of symbols]

 1 Fixed horn 2 Booster horn 3 Tool horn 4,14,34 Connecting screw 4a, 14a, 34a Upper screw 4b, 14b, 34b Lower screw 4c, 14c Shaft part 5,25 Operation hole 6 Engagement hole 15 Slot 34c Connection screw operation Portion 40 Engagement portion 51 Operation opening

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigemasa Tsubone 2-2-1 Nishi-nippori, Arakawa-ku, Tokyo Seidensha Electronics Co., Ltd. Headquarters factory

Claims (9)

[Claims] 1. A driving-side horn to which ultrasonic vibration is applied to an input end; a driven-side horn whose input end faces an output end of the driving-side horn; an upper screw is screwed onto the driving-side horn and a lower screw And a connecting screw for screwing the driven horn to each other and connecting the two horns to each other in a stationary state. 2. The ultrasonic processing horn according to claim 1, wherein the driving side horn is a fixed horn or a booster horn, and the driven side horn is a booster horn or a tool horn. . 3. The ultrasonic processing horn according to claim 1, wherein the connecting screw has an upper screw and a lower screw which are reverse to each other. 4. The connecting screw, wherein the pitch of the upper screw and the lower screw are different from each other.
Alternatively, the ultrasonic processing horn according to 2. 5. The ultrasonic processing horn according to claim 1, wherein the connecting screw has a connecting screw operating portion between the upper screw and the lower screw. 6. The driving side horn or at least one of the driven side horn has an opening for operating a connecting screw.
The ultrasonic processing horn described. 7. The opening according to claim 6, wherein the opening is formed by a hole drilled from the input end of the driving side horn or the output end of the driven side horn to the threaded portion of the connecting screw. Ultrasonic processing horn. 8. At least one of the output end of the driving side horn and the input end of the driven side horn has an engaging portion for fixing the relative positional relationship around the connecting screws of both horns. Claims 1, 2, 3, 4, 5, characterized
The ultrasonic processing horn according to 6 or 7. 9. The plurality of driven horns are arranged side by side at a narrow interval including zero.
The ultrasonic processing horn according to 4, 5, 6, 7 or 8.