JPS5916142Y2 - Ultrasonic processing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ultrasonic machining device, and includes forming a split groove portion into which a supporting portion of an ultrasonic machining tool is inserted at the tip of a horn for increasing vibration amplitude of the ultrasonic machining device; A fastening member for fastening the support portion of the ultrasonic machining tool inserted into the split groove is disposed at a position at a length shorter than the approximately wavelength of the applied ultrasonic wave from the tip of the vibration amplitude amplifying horn 4. , furthermore, when the support part of the ultrasonic machining tool is inserted into the groove part, the support part light ＼ is configured so that the gap on the base side is smaller than on the end side,
By tightening the ultrasonic machining tool with the fastening member in such a way that the insertion length of the support part of the ultrasonic machining tool inserted into the groove part of the vibration amplitude expansion horn is shorter than approximately + wavelength of the applied ultrasonic wave, the vibration amplitude expansion horn is tightened. Provides an ultrasonic machining device that can transmit vibration energy well from a horn to an ultrasonic machining tool, that can make ultrasonic machining tools at low cost, and that allows easy replacement of ultrasonic machining tools. The purpose is to

Conventionally, ultrasonic machining equipment has attached an ultrasonic machining tool to a horn for amplifying vibration amplitude, and this installation method involves forming a hole at the tip of the horn and supporting the ultrasonic machining tool in this hole. or by forming a threaded hole in the tip of the horn, forming a threaded groove in the tip of the support part of the ultrasonic machining tool, and screwing the two together. There is.

However, among these coupling methods, the former method is troublesome to attach and remove the ultrasonic machining tool, and the replacement work cannot be done quickly; It is difficult to set the orientation of the ultrasonic machining tool in the desired direction.

If an attempt is made to set the orientation of the ultrasonic machining tool in the desired direction, the degree of coupling between the ultrasonic machining tool and the horn will weaken, and not only will vibration energy not be transmitted well to the ultrasonic machining tool, but the screw Extra stress will be generated at the threaded part and there is a risk of damage to the threaded part.

The present invention eliminates the above drawbacks, and examples thereof will be described below.

FIG. 1 is an explanatory view of the first embodiment of the ultrasonic machining device according to the present invention. In the figure, 1 is a horn for increasing vibration amplitude, and 2 is a horn formed at the tip of the horn 1. It is a split groove.

A screw hole 3 for fastening an ultrasonic machining tool is formed at a length shorter than approximately + wavelength of the applied ultrasonic wave from the tip of the horn.

4 is a bolt for fastening an ultrasonic machining tool, 5 is an ultrasonic machining tool, 6 is a tapered support part of the ultrasonic machining tool, and 7 is a tapered support part for the ultrasonic machining tool even if the tip of this support part is long. This is a bolt through hole or notch formed at a position approximately at the wavelength of the sound wave.

FIG. 2 is an explanatory diagram of a second embodiment of the ultrasonic processing apparatus according to the present invention, and the configuration and main parts are the same as the first embodiment, but
The shape of the groove 12 formed in the horn 11 and the support part of the processing tool are slightly different.

That is, the groove 12 formed at the tip of the horn has a cylindrical center portion, and the support portion 16 of the ultrasonic machining tool 15 has a truncated cone shape.

By doing so, the ultrasonic machining tool is prevented from rotating about the bolt 14, and the ultrasonic machining tool is firmly coupled to the vibration amplitude amplifying horn 11.

Note that 13 is a tapped hole, and 17 is a notch for passing a bolt through.

In the ultrasonic machining apparatus configured as described above, when an ultrasonic machining tool is fastened to the vibration amplitude amplifying horn, the ultrasonic machining tool can be strongly fastened without considering the orientation of the machining tool at all.

In addition, since the ultrasonic machining tool can be set in a predetermined direction and the degree of coupling can be strengthened, it is easy to replace the machining tool, and vibration energy can be transmitted well to the machining tool. .

Furthermore, since there is no need to form a groove or the like in the support part of the processing tool, it can be manufactured at a lower cost.

Further, since the tightening position of the bolt or the like is a position shorter than the tip of the horn by approximately + the wavelength of the applied sound wave, the vibration energy is efficiently transmitted to the processing tool.

This tightening position is about + for the applied sound wave from the tip of the horn.
If the distance was longer than the wavelength, the vibration transmission efficiency deteriorated.

Furthermore, the shorter the distance from the tip of the horn to the tightening position than the +wavelength of the applied sound wave, the better the vibration transmission efficiency.
Even if the wavelength was shorter than the approximately □ wavelength of the applied sound wave, there was no difference from the case at the 20' longer position.

In addition, the width of the split groove part is constant, and the tip of the support part is tapered to become thinner, so that when the support part is inserted into the split groove part, the gap between the two at the tip of the horn is smaller than the inner part. Since it is made small, when tightening with bolts, the tightening pressure is maximum at the tip of the horn, reducing friction loss caused by relative movement due to the difference in vibration displacement distribution, and reducing the decrease in amplitude on the horn side. Vibration energy is efficiently transmitted to ultrasonic machining tools.

On the other hand, if the shapes of the split groove part and the support part are the same, friction loss caused by relative motion due to the difference in vibration displacement distribution will increase, and vibration energy will not be efficiently transmitted to the ultrasonic machining tool. Furthermore, by making the insertion length of the support part inserted into the split groove part shorter than approximately ÷ the wavelength of the applied sound wave, vibration energy can be well transmitted to the processing tool.

On the other hand, if the insertion length is made relatively long compared to the horn resonance length, a vibration displacement distribution will occur in the support part itself, and this vibration displacement distribution may be different from that of the horn, and this difference will cause Friction loss due to relative motion increases, and vibration energy is not properly transmitted to the machining tool.

As described above, the ultrasonic machining device according to the present invention includes a groove portion into which the support portion of the ultrasonic machining tool is inserted is formed at the tip of the horn for increasing vibration amplitude, and the support portion is fastened by the groove portion. A fastening member is provided on the horn for expanding the vibration amplitude, so
Vibration energy can be well transmitted from the vibration amplitude expansion horn to the ultrasonic machining tool, and in particular, the insertion length of the support part of the ultrasonic machining tool into the split groove is shorter than approximately ÷ wavelength of the applied ultrasonic wave, and The position of the fastening member is shorter than the tip of the horn by approximately ÷ the wavelength of the applied ultrasonic wave, and the supporting part of the ultrasonic machining tool is tightened more strongly toward the tip of the horn. Energy can be efficiently transmitted to the machining tool, and since there is no need to form grooves etc. on the support part of the ultrasonic machining tool, it can be manufactured at a lower cost. It can be firmly tightened without having to consider the orientation of the sonic machining tool.
It has features such as easy replacement of ultrasonic machining tools.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of an ultrasonic processing apparatus according to the present invention. 1.11...Horn, 2,12...Divide part, 4,14...Pol), 5.15...
...Processing tool, 6, 16...Support part.

Claims (1)

[Scope of utility model registration request] At the tip of the vibration amplitude amplifying horn of the ultrasonic machining device, a groove is formed into which the supporting part of the ultrasonic machining tool is inserted. A fastening member for fastening the support part of the ultrasonic machining tool inserted into the split groove part was disposed at the paddle length position, and the support part of the ultrasonic machining tool was further inserted into the split groove part. In this case, the support part is configured so that the gap is smaller on the root side than on the tip side, and the insertion length of the support part of the ultrasonic machining tool inserted into the groove part of the horn for vibration amplitude expansion is approximately equal to the wavelength of the applied ultrasonic wave. An ultrasonic processing device characterized in that the fastening member is fastened with a shorter length.