JP7565071B2 - Ultrasonic Processing Equipment - Google Patents

Description

The present invention relates to an ultrasonic processing device that applies ultrasonic vibrations to a cutting blade to cut a workpiece, or to join or weld the workpiece, and relates to a structure for attaching a removable and replaceable attachment member to the tip of the horn.

As an example of an ultrasonic processing device that uses ultrasonic waves to perform processing, there is an ultrasonic cutting device that applies ultrasonic vibrations to a cutting blade that cuts an object to be cut (see Patent Document 1). In this type of cutting device, as shown in FIG. 27, for example, multiple bolt holes are formed on one side of the lower end of the horn 101 of the ultrasonic cutting device 100, and the cutting blade 103 is attached by screwing bolts 102 into these bolt holes.

In addition, in the past, in ultrasonic processing devices that join or weld workpieces in addition to the above-mentioned ultrasonic cutting, when it becomes necessary to replace the horn due to wear or damage, it has been proposed to configure the lower end portion of the horn as a removable and replaceable mounting member, since it would be too costly to replace the entire horn. In this case, a simple structure such as a bolt fastening structure is often used to connect the horn and mounting member, for example, the underside of the horn has an L-shaped cross section, the upper surface of the mounting member has the same L-shape as the L-shape of the underside of the horn, and the mounting member is fixed to the horn by a bolt on the side with the L-shapes of the horn and mounting member interlocked.

CD-ROM of Japanese Utility Model Application No. 61-200841 (Japanese Utility Model Application Publication No. 63-107595) (see specification, page 5, line 18 to page 6, line 1, Figure 3)

However, in the mounting structure of the cutting blade 103 as shown in Figure 17, the ultrasonic vibration of the horn 101 can cause the bolt 102 to loosen, loosening the fastening of the cutting blade 103, causing the cutting blade 103 to wobble, which can make it impossible to cut the object cleanly and accurately.

In addition, in the case of conventional ultrasonic processing equipment used for joining and welding, a simple fastening structure using bolts is used as described above, so ultrasonic vibrations can loosen the bolts, preventing the ultrasonic vibrations from being efficiently transmitted to the mounting member. Depending on the structure of the joining surface between the horn and the mounting member, when the horn ultrasonically vibrates, the mounting member does not become integrated with the horn, and the ultrasonic vibrations are not efficiently transmitted to the mounting member at the joint. As a result, the ultrasonic vibrations from the horn may not be efficiently applied to the workpiece sandwiched between the underside of the mounting member and the support. Therefore, a joining structure between the horn and the mounting member that is firmly integrated with the horn and can efficiently transmit the ultrasonic vibrations of the horn to the mounting member is desired.

The present invention was made in consideration of the above problems, and aims to provide an ultrasonic processing device that can efficiently transmit ultrasonic vibrations from a horn to a removable and replaceable mounting member, and can perform processes such as cutting, joining, and welding on workpieces with high precision.

In order to solve the above-mentioned problems, the ultrasonic processing device according to the present invention is an ultrasonic processing device for cutting, joining, welding, and other processing of a workpiece by ultrasonic vibration, comprising: a support on which the workpiece is placed; ultrasonic vibration means having a horn that is long in one direction perpendicular to the up-down direction and that applies ultrasonic vibration to the workpiece held between the support and the horn in resonance with ultrasonic vibrations generated by a vibrator; pressure means for applying a pressure to the horn by moving the ultrasonic vibration means in a direction approaching the support; It is characterized by comprising an attachment member that is long in the longitudinal direction of the horn and can be attached detachably and replaceably, and a fixing means for detachably fixing the attachment member to the tip surface of the horn, and when the attachment member is fixed to the horn, the tip surface of the horn and the opposing surface of the attachment member that faces it are in surface contact, and in a vertical cross section perpendicular to the longitudinal direction of the horn, a gap is provided in the center of the tip surface of the horn and the opposing surface of the attachment member so that the tip surface of the horn and the opposing surface of the attachment member do not come into contact with each other.

With this configuration, when the mounting member is fixed to the horn, the tip surface of the horn and the opposing surface of the mounting member that faces it are in surface contact, and in a longitudinal section perpendicular to the longitudinal direction of the horn, a gap is provided in the central portion of the tip surface of the horn and the opposing surface of the mounting member so that the tip surface of the horn and the opposing surface of the mounting member do not come into contact with each other. Therefore, when the fixing strength of the fixing means for the mounting member to the horn is increased, the gap between the tip surface of the horn and the opposing surface of the mounting member can absorb flexure and distortion, allowing the tip surface of the horn and the opposing surface of the mounting member, which are in surface contact, to be strongly pressed against each other. As a result, when ultrasonic vibrations from the ultrasonic vibration means are applied to the mounting member, the tip surface of the horn, which comes into surface contact with the horn with strong contact pressure, can prevent the end of the mounting member on the horn side in a cross section perpendicular to the longitudinal direction of the horn from spreading outward, and the mounting member can be ultrasonically vibrated while firmly integrated with the horn to efficiently transmit the ultrasonic vibrations of the horn to the mounting member. When processing (cutting, joining, welding, etc.) a workpiece held between the mounting member and the support, the ultrasonic vibration energy of the horn can be applied to the workpiece through the mounting member without leakage, and the workpiece can be processed with high precision. Moreover, when the mounting member wears out or is damaged, it is only necessary to replace the mounting member without replacing the entire horn, which is very inexpensive.

In this case, in a vertical section perpendicular to the longitudinal direction of the horn, the tip surface of the horn on both sides of the gap and the opposing surface of the mounting member may be in surface contact forming a downwardly inclined surface from the center toward the outside. Also, in a vertical section perpendicular to the longitudinal direction of the horn, the tip surface of the horn on both sides of the gap and the opposing surface of the mounting member may be in surface contact forming a horizontal surface.

The fixing means further comprises a bolt insertion hole formed at approximately the center of the tip surface of the mounting member, penetrating the mounting member in a direction from the mounting member toward the horn, a screw hole formed at approximately the center of the tip surface of the horn at a position continuous with the bolt insertion hole, and a bolt that is inserted into the bolt insertion hole from the end surface of the mounting member opposite the opposing surface and screwed into the screw hole to fix the mounting member to the horn, and it is preferable that the bolt penetrates the gap between the tip surface of the horn and the opposing surface of the mounting member.

With this configuration, when the tightening force of the bolt is increased to increase the strength of the attachment member to the horn, the gap between the tip surface of the horn and the opposing surface of the attachment member can absorb flexure and distortion, so the contact pressure between the surface-to-surface contact tip surface of the horn and the opposing surface of the attachment member can be increased to attach the attachment member in a state of pressure contact with the horn.

The ultrasonic processing device according to the present invention may also include a cutting blade that is fixed to the end face of the mounting member opposite the opposing face and cuts the workpiece.

With this configuration, when the workpiece, that is the object to be cut, is cut with a cutting blade, with the mounting member fixed to the horn, the tip surface of the horn and the opposing surface of the mounting member facing it are in surface contact, and in a longitudinal section perpendicular to the longitudinal direction of the horn, a gap is provided in the central portion of the tip surface of the horn and the opposing surface of the mounting member so that the tip surface of the horn and the opposing surface of the mounting member do not come into contact with each other. Therefore, when the fixing strength of the fixing means for the mounting member to the horn is increased, the gap between the tip surface of the horn and the opposing surface of the mounting member can absorb flexure and distortion, allowing the tip surface of the horn, which is in surface contact, to be strongly pressed against the opposing surface of the mounting member. As a result, when ultrasonic vibrations from the ultrasonic vibration means are applied to the mounting member, the tip surface of the horn, which comes into surface contact with a strong contact pressure, can prevent the end of the mounting member on the horn side in a cross section perpendicular to the longitudinal direction of the horn from spreading outward, and the mounting member can be integrated with the horn and ultrasonically vibrated. Even if ultrasonic vibrations are applied to the mounting member, the cutting blade attached to the end surface opposite the opposing surface of the mounting member can be reliably prevented from wobbling, making it possible to cut the object by holding the cutting blade firmly attached.

It is also preferable that a cutting blade having a cutting edge that forms a straight line parallel to the longitudinal direction of the horn is fixed to the end face of the mounting member opposite the opposing face at a position offset from the bolt.

With this configuration, when a bolt passes through the gap between the tip surface of the horn and the opposing surface of the mounting member to fasten the mounting member to the horn, the cutting blade can be fixed without interfering with the bolt.

The fixing means may also include a bolt insertion hole formed in at least one of both side surfaces of the tip of the horn parallel to the longitudinal direction of the horn, penetrating to the inclined tip surface of the horn, a screw hole formed in the inclined opposing surface of the mounting member at a position continuous with the bolt insertion hole, and a bolt inserted from the one side surface of the horn into the bolt insertion hole and screwed into the screw hole to fix the mounting member to the horn.

According to this configuration, the mounting member can be fixed to the horn by inserting a bolt into a bolt insertion hole formed on at least one of the two sides of the tip end of the horn parallel to the longitudinal direction of the horn or the horn side end of the mounting member, and screwing the inserted bolt into the screw hole on the mounting member side or the horn side. In this case, when the tightening force of the bolt is increased to increase the fixing strength of the mounting member to the horn, the deflection and distortion can be absorbed by the gap between the tip face of the horn and the opposing surface of the mounting member, so that the contact pressure between the tip face of the horn and the opposing surface of the mounting member, which are in surface contact, can be increased.

The cutting blade may have a cutting edge that is parallel to the longitudinal direction of the horn and is fixed to approximately the center of the end face of the mounting member opposite the opposing face.

The cutting blade may have a blade tip shape that forms a predetermined cutting pattern consisting of a combination of straight lines and curves, and may be fixed to the end face of the mounting member opposite the opposing face. In this case, the cutting blade can punch out the object to be cut into the predetermined cutting pattern.

According to the present invention, when ultrasonic vibrations from the ultrasonic vibration means are applied to the mounting member, the tip surface of the horn, which comes into surface contact with the mounting member with a strong contact pressure, can prevent the end of the mounting member on the horn side in a cross section perpendicular to the longitudinal direction of the horn from spreading outward. Therefore, the mounting member can be firmly integrated with the horn and ultrasonically vibrated to efficiently transmit the ultrasonic vibrations of the horn to the mounting member. When processing (cutting, joining, welding, etc.) a workpiece held between the mounting member and the support, the ultrasonic vibration energy of the horn can be applied to the workpiece through the mounting member without leakage, making it possible to process the workpiece with high precision. Furthermore, when the mounting member wears out or is damaged, only the mounting member can be removed and replaced with a new one, which is much cheaper than replacing the entire horn.

1 is a side view of a first embodiment of an ultrasonic processing device according to the present invention when used for cutting. FIG. FIG. 2 is a perspective view of a portion of FIG. 1; FIG. 3 is a cutaway front view of the exploded state of FIG. 2; FIG. 3 is a cutaway front view of FIG. 2; FIG. FIG. 11 is a cutaway front view of a portion of the second embodiment. FIG. 13 is a front view of a portion of the third embodiment. FIG. 13 is a front view of a portion of the fourth embodiment. FIG. 13 is a front view of a portion of the fifth embodiment. FIG. 13 is a front view of a portion of the sixth embodiment. FIG. 23 is a front view of a portion of the seventh embodiment. FIG. 23 is a perspective view of a portion of the eighth embodiment as viewed from below. FIG. 13 is a front view of a portion of a ninth embodiment of the ultrasonic processing device according to the present invention when used for welding. 13 is a front view in a partially disassembled state of a tenth embodiment of the ultrasonic processing device according to the present invention when used for joining. FIG. FIG. 23 is a front view of a portion of the tenth embodiment. FIG. 23 is a diagram showing a modified example of the tenth embodiment. FIG. 13 is a perspective view of a portion of a conventional example.

First Embodiment
A first embodiment in which an ultrasonic processing device according to the present invention is applied to cutting will be described with reference to FIGS.

The ultrasonic cutting device 1 shown in Figure 1 sandwiches the object to be cut between the support surface 21 of the support body 2 and the horn 35 that ultrasonically vibrates in the vertical direction (Z-axis direction in Figure 1) perpendicular to the support surface 21, and moves the object to be cut in its longitudinal direction, that is, the Y-axis direction in Figure 1, to move the pressing point of the object to be cut along the longitudinal direction (Y-axis direction) of the object to be cut, and applies ultrasonic vibrations while pressing the object to be cut in the Z direction, cutting the object to be cut with the long cutting blade 4 attached to the underside of the horn 35 in the X-axis direction in Figure 1, and then repeats the cutting by moving the object to be cut in the Y-axis direction.

The support 2 is disposed below the head portion 3, and the cutting blade 4 fixed to the mounting member 36 on the underside of the horn 35 and the horizontal support surface 21 of the support 2 sandwich the workpiece placed on the support 2, and in this sandwiched state, the cutting blade 4 applies ultrasonic vibrations while pressing the workpiece with a predetermined pressure against it, thereby cutting the workpiece. The support 2 may be formed from various materials as appropriate, such as various metal materials such as titanium, titanium alloys, iron, stainless steel, aluminum, and aluminum alloys such as duralumin, glass, ceramics, and resin. In addition, it is preferable to coat the cutting edge of the cutting blade 4 with a hard material such as titanium nitride, titanium carbonitride, titanium aluminum nitride, aluminum chromium nitride, and diamond-like carbon (DLC) by chemical vapor deposition (CVD) or physical vapor deposition (PVD).

The head unit 3 includes a vibrator 31 (corresponding to the "ultrasonic vibration means" in the present invention) that applies ultrasonic vibrations of so-called vertical vibrations in the Z-axis direction in FIG. 1, which is the vertical direction, a resonator 32 connected to one end of the vibrator 31, and a support means 33 that supports the vibrator 31 and the resonator 32 so that they can move freely in the vertical direction (Z-axis direction), which is the vibration direction. The vibrator 31 ultrasonically vibrates the resonator 32, which applies ultrasonic vibrations to the object to be cut, thereby cutting the object.

Specifically, the resonator 32 resonates with ultrasonic vibrations generated by the transducer 31 controlled by a control device (not shown) and ultrasonically vibrates in the vertical direction (Z-axis direction in FIG. 1), which is the direction of its central axis. It includes a booster 34 and a horn 35, and the lower end of the booster 34 and the upper end of the horn 35 are connected by a headless screw so that their central axes are coaxial. The booster 34 is formed to a length of one wavelength of the resonant frequency so that, for example, its approximate center position in the vertical direction (Z-axis direction) and both its upper and lower ends are maximum amplitude points. At this time, two positions 1/4 wavelength away from each maximum amplitude point in the vertical direction (Z-axis direction) correspond to the first and second minimum amplitude points of the booster 34, respectively. The booster 34 is also formed in a cylindrical shape with a circular cross section. The transducer 31 is connected to the upper end of the booster 34 by a headless screw so that it is coaxial with the central axis of the booster 34.

In addition, on the outer peripheral surface of the booster 34 at positions corresponding to the first and second minimum amplitude points, concave grooves are formed along the respective circumferential directions to form gripped portions for gripping the booster 34 to the support means 33. In this case, it is preferable to form the gripped portions so that the cross-sectional shape approximately perpendicular to the central axis of the booster 34 is a circle or other polygonal shape.

The resonator 32 (booster 34 and horn 35) may be made of various metal materials commonly used to make resonators, such as titanium, titanium alloys, iron, stainless steel, aluminum, and aluminum alloys such as duralumin. It is also desirable to configure the resonator 32 so that its resonance frequency is about 15 kHz to about 60 kHz, and its vibration amplitude (amplitude of expansion and contraction in the Z-axis direction in FIG. 1) is about 2 μm to about 300 μm.

The horn 35 has a long mounting member 36 removably attached to the underside thereof in the X-axis direction in FIG. 1, similar to the horn 35. The cutting blade 4 is fixed to the underside of the mounting member 36. The cutting object placed on the support surface 21 of the support body 2 is pressed with a predetermined pressure in the vertical direction (Z-axis direction) via the horn 35 by the support means described later. The horn 35 resonates with the vibrator 31 and vibrates ultrasonically, thereby applying ultrasonic vibration to the cutting blade 4. The horn 35 is formed to a length of half the wavelength of the resonant frequency so that both ends in the vertical direction (Z-axis direction) in FIG. 1 are maximum amplitude points. At this time, the position approximately in the center of the horn 35 in the vertical direction (Z-axis direction) corresponds to the third minimum amplitude point.

As shown in Figs. 2 and 3, the horn 35 is formed in a rectangular parallelepiped shape elongated in the X-axis direction in Fig. 3, and a horn-side protrusion 35a is formed in the center of the lower surface of the horn 35, with the X-axis direction as the length direction, in order to attach the mounting member 36, whose vertical cross section, which is a vertical cross section in the Z-axis direction perpendicular to the longitudinal direction of the horn 35 (the X-axis direction in Fig. 3), is substantially concave. A mounting member-side groove 36a is formed in the center of the upper surface of the mounting member 36, with the X-axis direction as the length direction, and the mounting member 36 is attached to the lower surface of the horn 35 by fitting the horn-side protrusion 35a and the mounting member-side groove 36a. As shown in Figs. 2 and 3, a long groove is formed in the X-axis direction on the lower surface of the mounting member 36 at a position shifted toward one end (left end) from the center position in the Y-axis direction in Fig. 3, for fixing the cutting blade 4. The upper end of the cutting blade 4 is fitted into this groove and bonded or welded with an adhesive, so that the cutting blade 4 is fixed to the mounting member 36.

As shown in FIG. 3, a plurality of bolt insertion holes 36b communicating with the mounting member side groove 36a are formed at a predetermined interval in the center of the underside of the mounting member 36, and a screw hole 35b communicating with each bolt insertion hole 36b is formed on the underside of the horn side ridge 35a of the horn 35. Each bolt insertion hole 36b also has a storage hole for storing the head of a bolt B. Then, as shown by the arrow in FIG. 3, with the mounting member side groove 36a fitted into the horn side ridge 35a, a bolt B is inserted from below into each of the bolt insertion holes 36b and screwed into each of the plurality of screw holes 35b of the horn side ridge 35a, so that the mounting member 36 is detachably fixed to the underside of the horn 35. At this time, the cutting blade 4 is replaced together with the mounting member 36.

At this time, as shown in Figures 3 and 4, when the bolt B inserted into the bolt insertion hole 36b formed in the mounting member side groove 36a screws into the screw hole 35b on the horn 35 side, the lower surface 35c of the horn 35 around the horn side ridge 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a come into surface contact, and the protruding length of the horn side ridge 35a and the mounting member side groove 36a are set so that the opposing surfaces of the horn side ridge 35a and the mounting member side groove 36a do not come into surface contact, creating a gap S (see Figure 4).

Furthermore, in a vertical cross section in the vertical direction (Z-axis direction) perpendicular to the longitudinal direction of the horn 35 (X-axis direction in FIG. 3), the lower surface 35c, which is the tip surface of the horn 35 on the periphery of the horn-side convex rib 35a with which it makes surface contact, and the upper surface 36c, which is the opposing surface of the mounting member 36 on the periphery of the mounting member-side concave groove 36a with respect to the horn 35, are machined to form a downward sloping surface from the center toward the outside.

Returning to FIG. 1, the support means 33 includes a base 37 and a clamp means 38, and supports the resonator 32 by gripping the gripped portion of the booster 34 with the clamp means 38. The base 37 has a screw hole formed in the vertical direction (Z-axis direction) that screws into the ball screw of the pressure means 5, which will be described in detail later.

In addition, the clamping means 38 is provided at two locations on the base 37 so as to be able to grip (clamp) the two gripped portions formed on the booster 34, and each of the clamping means 38 includes a first and a second member that clamps the gripped portion of the booster 34. Specifically, the first and second members of the clamping means 38 are each provided with a recess having a shape that can engage with the cross-sectional shape of the gripped portion, and the first and second members of the clamping means 38 supported on the base 37 are inserted into the concave grooves that form the gripped portion so that the gripped portion of the booster 34 is sandwiched between the recesses of the first and second members, and the first and second members are fixed with bolts, whereby the gripped portion of the booster 34 is gripped by the clamping means 38.

The configuration of the support means 33 that supports the resonator 32 is not limited to the clamp means 38 that is fixed by a bolt while gripping the gripped portion formed on the booster 34 as described above, but may be any configuration that can support the gripped portion of the booster 34, such as a mechanical clamp mechanism that can be electrically controlled or a clamp mechanism that can be attached with one touch.

The position of the gripped portion formed on the resonator 32 is not limited to the minimum amplitude point, and the gripped portion may be formed at any position on the resonator 32. The configuration of the gripped portion is not limited to a configuration in which a concave groove is formed along the circumferential direction on the outer peripheral surface of the resonator 32, and the gripped portion may be configured in any shape as long as it can be gripped by the support means 33, such as a configuration in which a convex flange is formed along the circumferential direction on the outer peripheral surface of the resonator 32. The gripped portion may also be supported by the support means 33 via an elastic member such as an O-ring or a diaphragm.

The pressure applying means 5 drives the resonator 32 supported by the support means 33 so that the cutting blade 4 attached to the horn 35 via the mounting member 36 faces the support surface 21 in the vertical direction (Z-axis direction in FIG. 1) to move it vertically toward or away from the support 2, and includes a drive motor 51 and a ball screw 52. In addition, a guide 53 is connected to a support (not shown) erected on a stand (not shown), and the pressure applying means 5 is connected to the support and the guide 53 via a frame 54.

Then, the drive motor 51 is controlled and rotated by a control device not shown in FIG. 1, so that the convex rail 53a provided on the guide 53 in the vertical direction (Z-axis direction in FIG. 1) and the guide (not shown) provided on the support means 33 slide against each other, and the support means 33 screwed to the ball screw 52 moves in the vertical direction (Z-axis direction), whereby the resonator 32 supported by the support means 33 approaches the support 2 or moves away from the support 2. At this time, the direction of the central axis of the resonator 32 is approximately the same as the direction of the screw hole formed in the base 37, that is, the direction of the central axis of the resonator 32 and the vertical direction (Z-axis direction), which is the movement direction of the resonator 32 by the pressure means 5, are approximately parallel, and the cutting blade 4 on the lower surface of the horn 35 faces the support 2. The vibrator 31 and the resonator 32 are supported by the support means 33 so that they can move up and down freely and the pressing force of the cutting blade 4 can be adjusted.

That is, the pressure means 5 is configured to adjust the drive torque of the drive motor 51 based on the control of the control device, so that the cutting blade 4 can be brought close to the support 2 with a predetermined pressure force. Specifically, a linear encoder (not shown) is provided on the support, which detects the height of the head unit 3 in the vertical direction (Z-axis direction), and the control device controls the drive motor 51 based on the detection signal from the linear encoder, thereby fine-tuning the height of the head unit 3 and adjusting the pressure applied by the cutting blade 4 to a predetermined value when cutting the object placed on the support 2.

The object to be cut is, for example, a thin foil-like metal such as copper or aluminum having a thickness of several hundred microns, or a resin sheet. For example, a long object to be cut (hereinafter simply referred to as a sheet) wound around a supply roller is nipped by a pair of pull-out rollers and unwound from the supply roller. The unwound sheet is sent between the support 2 and the cutting blade 4, and the sheet is cut by the cutting blade 4, which moves up and down.

The ultrasonic processing device 1 in the first embodiment shown in Figures 1 to 4 has a feature in the configuration of the mounting portion of the cutting blade 4. That is, when the horn side protrusion 35a and the mounting member side groove 36a are engaged and the bolt B is screwed into the screw hole 35b, the lower surface 35c of the horn 35 around the horn side protrusion 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a are in surface contact, and the opposing surfaces of the horn side protrusion 35a and the mounting member side groove 36a are not in surface contact, creating a gap S. Furthermore, in a vertical cross section in the up-down direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) of the horn 35, the lower surface 35c of the horn 35 around the horn side protrusion 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a that are in surface contact are formed to form a downward inclined surface from the center to the outside.

The technical effects brought about by the above-mentioned characteristic configuration will be described below. As shown in FIG. 5(a), in a vertical section in the vertical direction (Z-axis direction in FIG. 5) perpendicular to the longitudinal direction of the horn 35 (X-axis direction in FIG. 5), the lower surface 35c' of the horn 35 at the periphery of the horn-side ridge 35a and the upper surface 36c' of the mounting member 36 at the periphery of the mounting member-side groove 36a are horizontal surfaces, and when the horn-side ridge 35a and the mounting member-side groove 36a are engaged, the opposing surfaces of the horn-side ridge 35a and the mounting member-side groove 36a come into surface contact when a bolt is screwed into the screw hole 35b, and the lower surface 35c' of the horn 35 at the periphery of the horn-side ridge 35a of the horn 35 and the upper surface 36c' of the periphery of the mounting member-side groove 36a of the mounting member 36 do not come into contact with each other, and a gap S' is generated.

In the case of the configuration of FIG. 5(a), when ultrasonic vibrations are applied to the horn 35, as shown by the arrows in FIG. 5(b), in a vertical cross section in the up-down direction (Z-axis direction) perpendicular to the longitudinal direction of the horn 35 (X-axis direction in FIG. 5), the upper surfaces 36c' on both sides of the mounting member side groove 36a of the mounting member 36 are displaced so as to open outward, that is, in the direction of the arrows in FIG. 5(b), with the frequency of the ultrasonic vibrations. As a result, the cutting edge of the cutting blade 4 fixed to the underside of the mounting member 36 is displaced in the direction of the arrows in FIG. 5(b), and it was found that the object to be cut could not be cut cleanly.

In contrast, as shown in FIG. 4, when the horn side ridge 35a and the mounting member side groove 36a are engaged and the bolt B is screwed into the screw hole 35b, the lower surface 35c of the horn 35 around the horn side ridge 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a come into surface contact, and the lower surface 35c of the horn 35 around the horn side ridge 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a that come into surface contact are in a vertical direction perpendicular to the longitudinal direction of the horn 35 (the X-axis direction in FIG. 4). By forming the horn side protrusion 35a and the mounting member side recessed groove 36a so that the opposing surfaces do not come into surface contact and a gap S is generated, the gap S between the lower surface of the horn 35 and the upper surface of the mounting member 36 can absorb deflection and distortion when the mounting member 36 is fixed to the horn 35 by tightening the bolt B, and the lower surface 35c of the horn 35 and the upper surface 36c of the mounting member 36 can be strongly pressed against each other. Therefore, even if ultrasonic vibrations from the vibrator 31 are applied to the mounting member 36 through the resonator 32, it is possible to restrict the upper end of the mounting member 36 in the vertical section in the Z-axis direction perpendicular to the X-axis direction in FIG. 4, which is the longitudinal direction of the horn 35, from spreading outward, and it is possible to reliably prevent the cutting edge of the cutting blade 4 from becoming wobble.

Therefore, according to the first embodiment described above, even if ultrasonic vibrations from the vibrator 31, which is an ultrasonic vibration means, are applied to the mounting member 36 through the horn 35, the upper end of the mounting member 36 in the vertical cross section in the vertical direction (Z-axis direction) perpendicular to the length direction of the cutting blade 4 (X-axis direction in Figures 1, 3, and 4) can be restricted from spreading outward, so that the mounting member 36 can be integrated with the horn 35 and ultrasonically vibrated. When ultrasonic vibrations are applied to the mounting member 36, it is possible to reliably prevent the cutting edge of the cutting blade 4 fixed to the underside of the mounting member 36 from becoming distorted, and the cutting blade 4 can be held firmly fixed to cut the object cleanly and accurately. Moreover, when the cutting blade 4 wears out or is damaged, the cutting blade 4 can be replaced with a new one together with the mounting member 36 without replacing the entire horn.

In addition, by providing a gap S between the opposing surfaces of the horn side ridge 35a and the mounting member side groove 36a, when the bolt B is tightened, the gap S can absorb the deflection and distortion caused by strong tightening of the bolt B. Therefore, the lower surface 35c of the horn 35 around the horn side ridge 35a and the upper surface 36c of the mounting member 36 around the mounting member side groove 36a can be pressed together, and the outward spread of the upper end of the mounting member 36 when ultrasonic vibrations are applied can be more reliably restricted.

Second Embodiment
A second embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 6. The overall configuration of the device in the second embodiment is almost the same as that of the ultrasonic processing device 1 in the first embodiment described above, so that differences from the first embodiment will be mainly described below with reference to Figs. 1 to 4.

The horn 35 and mounting member 36 in the second embodiment differ from those in the first embodiment in that, instead of the horn side ridge 35a and mounting member side groove 36a, as shown in FIG. 6, a horn side groove 35d is formed in the center of the bottom surface of the horn 35 and a mounting member side ridge 36d is formed in the center of the top surface of the mounting member 36, and the horn side groove 35d and the mounting member side ridge 36d are fitted together.

Therefore, the second embodiment can achieve the same effects as the first embodiment described above.

Third Embodiment
A third embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 7. The overall configuration of the device in the second embodiment is almost the same as that of the ultrasonic processing device 1 in the second embodiment described above, so the following mainly describes the differences from the second embodiment.

The horn 35 and mounting member 36 in the third embodiment differ from the second embodiment described above in that, instead of the horn-side groove 35d and mounting member-side ridge 36d of the second embodiment, as shown in FIG. 7, in a vertical cross section in the up-down direction (Z-axis direction) perpendicular to the longitudinal direction of the horn 35 (X-axis direction in FIG. 7), a horn-side horizontal surface 35e and a mounting member-side horizontal surface 36e are formed in the center part, continuing from the downwardly sloping lower surface 35c of the horn 35 and the downwardly sloping upper surface 36c of the mounting member 36, which are in surface contact, and a gap S is provided between the horn-side horizontal surface 35e and the mounting member-side horizontal surface 36e.

Therefore, according to the third embodiment, similar to the second embodiment described above, it is possible to obtain the same effect as the first embodiment.

Fourth Embodiment
Next, a fourth embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 8. The overall configuration of the device in the fourth embodiment is almost the same as that of the ultrasonic processing device 1 in the first embodiment described above, so that differences from the first embodiment will be mainly described below with reference to Figs. 1 to 4.

The horn 35 and mounting member 36 in the fourth embodiment differ from those in the first embodiment in that, as shown in FIG. 8, in a vertical cross section in the up-down direction (Z-axis direction) perpendicular to the longitudinal direction of the horn 35 (X-axis direction in FIG. 12), the lower surface of the horn 35 around the horn side protrusion 35a and the upper surface of the mounting member 36 around the mounting member side recessed groove 36a in the first embodiment are horizontal surfaces 35f and 36f, respectively, with no inclination.

And when the horn side ridge 35a and the mounting member side groove 36a are engaged and the bolt B (see FIG. 3) is screwed into the screw hole 35b, the horizontal surface 35f of the horn 35 and the horizontal surface 36f of the mounting member 36 come into surface contact, and the opposing surfaces of the horn side ridge 35a and the mounting member side groove 36a do not come into surface contact, creating a gap S, which is the same as in the first embodiment described above.

Therefore, the fourth embodiment can achieve the same effect as the first embodiment described above.

Fifth Embodiment
A fifth embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 9. The overall configuration of the device in the fifth embodiment is almost the same as that of the ultrasonic processing device 1 in the fourth embodiment described above, so the following description will mainly focus on the differences from the fourth embodiment.

The horn 35 and mounting member 36 in the fifth embodiment differ from those in the fourth embodiment (see FIG. 8) in that, instead of the horn-side ridge 35a and mounting member-side groove 36a in the fourth embodiment, a horn-side groove 35g is formed on the horn 35 and a mounting member-side ridge 36g is formed on the mounting member 36, as shown in FIG. 9.

As in the fourth embodiment, when the horn side groove 35g and the mounting member side ridge 36g are fitted together and a bolt inserted from the underside of the mounting member 36 is screwed into the screw hole 35b formed in the horn 35, the opposing surfaces of the horn side groove 35g and the mounting member side ridge 36g are not in surface contact with each other, but are formed to create a gap S, as shown in FIG. 9.

Therefore, the fifth embodiment, like the fourth embodiment, can provide the same effects as the first embodiment described above.

Sixth Embodiment
A sixth embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 10. The overall configuration of the device in the sixth embodiment is almost the same as that of the ultrasonic processing device 1 in the third embodiment described above, so the following description will mainly focus on the differences from the third embodiment.

The sixth embodiment differs from the third embodiment (see FIG. 7) in that, as a fixing means for fixing the mounting member 36 to the horn 35, instead of screwing a bolt B into the screw hole 35b of the horn 35 from the underside of the mounting member 36 as shown in FIG. 3, as shown in FIG. 10, a plurality of bolt insertion holes 35h that penetrate to the downwardly sloping underside 35c of the horn 35 are formed at predetermined intervals on both side surfaces of the lower end of the horn 35 that is parallel to the longitudinal direction of the horn 35 (the X-axis direction in FIG. 10), and a plurality of screw holes 36h are formed on the downwardly sloping upper surface 36c of the mounting member 36 at positions continuous with each of the bolt insertion holes 35h on both side surfaces of the horn 35, and bolts B are inserted into the bolt insertion holes 35h from both side surfaces of the horn 35 and screwed into the screw holes 36h, thereby fixing the mounting member 36 to the horn 35 and attaching the cutting blade 4 to the center of the underside of the mounting member 36. Here, there is a gap S between the horn side horizontal surface 35e and the mounting member side horizontal surface 36e, just like in the third embodiment.

Because the mounting member 36 is fixed to the horn 35 by tightening the bolt B from the side of the horn 35, the cutting blade 4 can be fixed at any position on the underside of the mounting member 36, not just the center of the underside of the mounting member 36, as shown in FIG. 10.

Therefore, according to the sixth embodiment, as in the third embodiment, it is possible to obtain the same effect as the first embodiment described above. In addition, it becomes possible to fix the cutting blade 4 at any position on the underside of the mounting member 36, not just the center of the underside of the mounting member 36.

Seventh Embodiment
A seventh embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 11. The overall configuration of the device in the seventh embodiment is almost the same as that of the ultrasonic processing device 1 in the sixth embodiment (see Fig. 10) described above, and the difference from the sixth embodiment is that a plurality of bolt insertion holes 35h penetrating to the downwardly inclined lower surface 35c of the horn 35 are formed at a predetermined interval only on one of both side surfaces of the lower end of the horn 35 parallel to the longitudinal direction of the horn 35 (the X-axis direction in Fig. 11), and a plurality of screw holes 36h are formed in the downwardly inclined upper surface 36c of the mounting member 36 at positions continuous with the bolt insertion holes 35h, and a bolt B is inserted into the bolt insertion holes 35h from the one side surface of the horn 35 and screwed into the screw hole 36h to fix the mounting member 36 to the horn 35. Here, a gap S exists between the horn side horizontal surface 35e and the mounting member side horizontal surface 36e, as in the sixth embodiment.

Therefore, the seventh embodiment can achieve the same effect as the sixth embodiment.

Eighth Embodiment
An eighth embodiment of the ultrasonic processing device according to the present invention will be described with reference to Fig. 12. In the eighth embodiment, the basic device configuration is the same as that of the third embodiment, except that the shape of the cutting blade is different from that of the ultrasonic processing device 1 of the third embodiment (see Fig. 7).

As shown in FIG. 12, the cutting blade 41 in the eighth embodiment has a cutting edge shape with four rectangular corners smoothed into curved lines. Instead of the cutting blade 4 in the third embodiment, the cutting blade 41 is fixed to the lower surface of the mounting member 36 at a position close to the periphery away from the center where the bolts B are inserted, so as to surround the arrangement of the bolts B. Here, like the cutting blade 4 in the fourth embodiment, the upper end of the cutting blade 41 is fitted into a groove formed on the periphery of the lower surface of the mounting member 36, and is fixed by bonding with an adhesive or welding. Note that the cutting edge shape of the cutting blade 41 is not limited to the shape shown in FIG. 12, and the structure of the mounting member 36 and the horn 35 to which the cutting blade 41 is fixed is not limited to that shown in FIG. 12, and may be any of the above-mentioned embodiments. Here, there is a gap S between the horn side horizontal surface 35e and the mounting member side horizontal surface 36e, as in the third embodiment.

Therefore, according to the eighth embodiment, not only can the same effect as the first embodiment be obtained, as in the third embodiment described above, but the cutting blade 41 having a predetermined cutting edge shape makes it possible to punch out the object to be cut into a predetermined cutting pattern.

Ninth embodiment
A ninth embodiment in which the ultrasonic processing device according to the present invention is applied to welding of resin films, etc. will be described with reference to Fig. 13. In the ninth embodiment, the configuration is the same as that of the ultrasonic processing device 1 of the sixth embodiment (see Fig. 10) except for the cutting blade 4.

That is, in the ninth embodiment, in the case where a plurality of resin films, which are the workpieces, are laminated and welded by heat generated by ultrasonic vibration, as shown in FIG. 13, in the same manner as in the sixth embodiment (see FIG. 10), the downwardly inclined lower surface 35c of the horn 35 and the downwardly inclined upper surface 36c of the mounting member 36 are in surface contact with each other with the mounting member 36 fixed to the horn 35, and in a vertical section perpendicular to the longitudinal direction of the horn 35, a gap S is provided between the horn side horizontal surface 35e, which is the central portion of the lower surface 35c of the horn 35 and the upper surface 36c of the mounting member 36, and the mounting member side horizontal surface 36e. The mounting member 36 is fixed to the horn 35 on both sides by a plurality of bolts B so that it can be detached and replaced freely. The cutting blade 4 is not fixed to the mounting member 36, but two resin films, for example, are sandwiched in a laminated state between the support surface 21 of the support body 2 (see FIG. 1) and the lower surface of the mounting member 36, and ultrasonic vibration by the horn 35 is applied to both resin materials to weld them.

At this time, it is desirable to form protrusions at a predetermined interval on the underside of the mounting member 36, sandwich the resin film between each protrusion and the support surface 21 of the support body 2, and apply ultrasonic vibrations to the resin film through each protrusion. In this way, only the protrusions come into contact with the resin film on the underside of the mounting member 36, so ultrasonic vibration energy can be applied to the resin film through each protrusion to heat it in a concentrated manner, and the resin film can be welded efficiently.

Therefore, according to the ninth embodiment, when the mounting member 36 is fixed to the horn 35, the downwardly inclined lower surface 35c of the horn 35 and the downwardly inclined upper surface 36c of the mounting member 36 are in surface contact, and in a vertical section perpendicular to the longitudinal direction of the horn 35, a gap S is provided in the center of the lower surface 35c of the horn 35 and the upper surface 36c of the mounting member 36 where the lower surface 35c of the horn 35 and the upper surface 36c of the mounting member 36 do not come into contact with each other. Therefore, when the fixing strength of the mounting member 36 to the horn 35 by the bolt B is increased, the gap S between the horn side horizontal surface 35e of the horn 35 and the mounting member side horizontal surface 36e of the mounting member 36 can absorb deflection and distortion, so that the lower surface 35c of the horn 35 and the upper surface 36c of the mounting member 36, which are in surface contact, can be strongly pressed against each other.

Therefore, when ultrasonic vibrations from the vibrator 31 (see FIG. 1) are applied to the mounting member 36, the underside of the horn 35, which comes into surface contact with the mounting member 36 with a strong contact pressure, can prevent the upper end of the mounting member 36 in a cross section perpendicular to the longitudinal direction of the horn 35 from spreading outward. The mounting member 36 can be ultrasonically vibrated while firmly integrated with the horn 35, and the ultrasonic vibrations of the horn 35 can be efficiently transmitted to the mounting member 36. When welding the resin material, which is the workpiece sandwiched between the underside of the mounting member 36 and the support 2, to the resin material, the ultrasonic vibration energy of the horn 35 can be applied to the workpiece through the mounting member 36 without leakage, allowing for precise welding.

Moreover, if the mounting member 36 becomes worn or damaged, only the mounting member 36 needs to be replaced, which is much less expensive than replacing the entire horn.

The mounting structure of the mounting member 36 to the horn 35 may be the one shown in FIG. 13 or the one excluding the cutting blade 4 in the seventh embodiment (see FIG. 11), and it is preferable that the bolt B is not provided on the underside of the mounting member 36 that comes into contact with the workpiece.

In the ninth embodiment, an example was given in which the horn 35 and the mounting member 36 are long in the X-axis direction, but they do not necessarily have to be long.

Tenth Embodiment
A tenth embodiment in which the ultrasonic processing device according to the present invention is applied to joining metals or the like as workpieces will be described with reference to Figures 14 and 15. In the tenth embodiment, the cutting blade 4 in the first embodiment (see Figures 1 to 4) is eliminated, and in order to apply lateral vibration to the workpiece, the vibrator 31, resonator 32 and horn 35 are supported laterally by a support means 33 and are laterally vibrated in the Y-axis direction in Figures 14 and 15. Except for this, the other configurations are the same as those of the ultrasonic processing device 1 of the first embodiment.

As shown in Figures 14 and 15, the cutting blade 4 in the first embodiment is eliminated, and as in the first embodiment, a horn side ridge 35a with its length in the X-axis direction is formed in the center of the tip surface of the horn 35, and a mounting member side groove 36a with its length in the X-axis direction is formed in the center of the opposing surface of the mounting member 36 that faces the horn 35. When the mounting member 36 is fixed to the horn 35, the tip surface 35i of the periphery of the horn side ridge 35a of the horn 35 and the opposing surface 36i of the periphery of the mounting member side groove 36a of the mounting member 36 are in surface contact, and a gap S is provided between the opposing surfaces of the horn side ridge 35a and the mounting member side groove 36a.

As shown in FIG. 14, a plurality of bolt insertion holes 36b that communicate with the mounting member side groove 36a are formed at a predetermined interval in the center of the end face of the mounting member 36, and screw holes 35b that communicate with each bolt insertion hole 36b are formed in the end face of the horn side ridge 35a of the horn 35, and a storage hole for storing the head of a bolt B is also formed in each bolt insertion hole 36b. With the mounting member side groove 36a fitted into the horn side ridge 35a as shown by the arrow in FIG. 14, a bolt B is inserted into each bolt insertion hole 36b and screwed into each of the plurality of screw holes 35b of the horn side ridge 35a, thereby fixing the mounting member 36 to the underside of the horn 35 in a removable and replaceable manner, which is the same as in the first embodiment except for the difference in orientation.

Then, the workpieces to be joined, such as metal, are placed on the support surface 21 of the support body 2, and with the joining surface 36j, which is the surface of the mounting member 36 painted black in Figures 14 and 15, in contact with the workpieces, ultrasonic vibrations are applied to the workpieces in the Y-axis direction in Figures 14 and 15 to join the workpieces.

Therefore, according to the tenth embodiment, as in the ninth embodiment described above, by providing a gap S between the opposing surfaces of the horn side protrusion 35a and the mounting member side recessed groove 36a, this gap S can absorb deflection and distortion, so that the tip surface 35i of the horn 35, which is in surface contact with the opposing surface 36i of the mounting member 36, can be strongly pressed against each other.

Therefore, when ultrasonic vibrations in the lateral direction (Y-axis direction in Figures 14 and 15) by vibrator 31 (see Figure 1) are applied to mounting member 36, tip surface 35i of horn 35 and opposing surface 36i of mounting member 36, which are in surface contact with each other with strong contact pressure, can prevent the end of mounting member 36 on the horn 35 side in a vertical cross section perpendicular to the longitudinal direction of horn 35 from spreading outward. This allows mounting member 36 to be ultrasonically vibrated while firmly integrated with horn 35, and the ultrasonic vibration of horn 35 to be efficiently transmitted to mounting member 36. When a joining object to be joined, such as a metal, which is a workpiece held between joining surface 36j (black surface in Figures 14 and 15) of mounting member 36 and support body 2, is joined, the ultrasonic vibration energy of horn 35 can be applied without leakage to the workpiece via mounting member 36, thereby enabling joining with high precision. Furthermore, when the joint surface 36r of the mounting member 36 becomes worn or damaged, only the mounting member 36 can be replaced, which is much less expensive than replacing the entire horn.

The structure for attaching the mounting member 36 to the horn 35 may be the one shown in Figs. 14 and 15, or may be the one in which the cutting blade 4 is omitted in the first embodiment (see Figs. 1 to 4), second embodiment (see Fig. 6), or third embodiment (see Fig. 7) described above. It is preferable to use a structure in which the mounting member 36 is fixed to the horn 35 by bolts B from one side of the horn 35 or mounting member 36, as in the seventh embodiment (see Fig. 11), and to use the side of the mounting member 36 opposite the side on which the bolts B are arranged as the joint surface.

In the tenth embodiment, an example was given in which the horn 35 and the mounting member 36 are long in the X-axis direction, but they do not necessarily have to be long.

The present invention is not limited to the above-mentioned embodiment, and various modifications other than those described above can be made without departing from the spirit of the invention. For example, in the above-mentioned embodiment, the present invention is applied to a device that cuts, joins, and welds workpieces, but the processing is not limited to cutting, joining, and welding, and the present invention can be applied to anything that processes workpieces using ultrasonic waves.

In addition, the inclined lower surface 35c of the horn 35 and the inclined upper surface 36c of the mounting member 36 in the first to ninth embodiments described above, as well as the inclined tip surface 35i of the horn 35 and the inclined opposing surface 36i of the mounting member 36 in the tenth embodiment, may be processed to form curved surfaces with the same curvature rather than being flat.

In addition, in each of the above-mentioned embodiments, a general bolt B is used as the fixing means for fixing the mounting member 36 to the horn 35, but the fixing means is not limited to this type of bolt B and may include other fasteners. In short, any means capable of fixing the mounting member 36 to the horn 35 is acceptable, but it is preferable that the tightening force is at least adjustable.

As a modification of the tenth embodiment, as shown in FIG. 16, the end of the mounting member 36 opposite the horn 35 may be bulged in the Z-axis direction to form a shape that is approximately T-shaped in cross section, and one side of the bulging mounting member 36 may be used as a joining surface 36j.

The present invention can be widely applied to ultrasonic processing devices that use ultrasonic vibrations to process workpieces.

REFERENCE SIGNS LIST 1 ultrasonic processing device 2 support 4, 41 cutting blade 5 pressure means 31 vibrator (ultrasonic vibration means)
35 ... Horn 35b ... Screw hole 35c ... Lower surface (tip surface)
35e: horn side horizontal surface 35h: bolt insertion hole 35i: tip surface 36: mounting member 36b: bolt insertion hole 36c: upper surface (opposing surface)
36e ... Horizontal surface of mounting member 36h ... Screw hole 36i ... Opposite surface 36j ... Joint surface S ... Gap B ... Bolt

Claims (9)

In ultrasonic processing equipment that uses ultrasonic vibrations to perform processes such as cutting, joining, and welding on workpieces,
A support on which the workpiece is placed;
an ultrasonic vibration means having a horn that is long in one direction perpendicular to the up-down direction and that resonates with ultrasonic vibrations generated by a vibrator to apply ultrasonic vibrations to the workpiece held between the support and the horn;
a pressure applying means for applying a pressure to the horn by moving the ultrasonic vibration means in a direction approaching the support;
a mounting member elongated in a longitudinal direction of the horn, the mounting member being detachably and replaceably attached to a tip surface of the horn;
a fixing means for removably fixing the mounting member to the tip surface of the horn,
With the mounting member fixed to the horn, a tip surface of the horn and an opposing surface of the mounting member facing the tip surface are in surface contact with each other,
An ultrasonic processing device characterized in that, in a longitudinal section perpendicular to the longitudinal direction of the horn, a gap is provided in the central portion of the tip surface of the horn and the opposing surface of the mounting member, so that the tip surface of the horn and the opposing surface of the mounting member do not come into contact with each other. The ultrasonic processing device according to claim 1, characterized in that, in a vertical cross section perpendicular to the longitudinal direction of the horn, the tip surface of the horn on both sides of the gap and the opposing surface of the mounting member are in surface contact, forming a downwardly inclined surface that extends from the center to the outside. The ultrasonic processing device according to claim 1, characterized in that in a vertical cross section perpendicular to the longitudinal direction of the horn, the tip surface of the horn on both sides of the gap and the opposing surface of the mounting member are in surface contact forming a horizontal plane. The fixing means is
a bolt insertion hole formed at a substantially central position of the tip surface of the mounting member so as to penetrate from the mounting member toward the horn;
a screw hole formed at a position adjacent to the bolt insertion hole at approximately the center of the tip surface of the horn;
a bolt that is inserted into the bolt insertion hole from an end face side of the mounting member opposite to the opposing face and is screwed into the screw hole to fix the mounting member to the horn,
4. The ultrasonic machining device according to claim 1, wherein the bolt passes through the gap between the tip surface of the horn and the opposing surface of the mounting member. The ultrasonic processing device according to any one of claims 1 to 4, characterized in that it is provided with a cutting blade that is fixed to the end surface of the mounting member opposite to the opposing surface and cuts the workpiece. The ultrasonic machining device according to claim 5, which is dependent on claim 4, characterized in that the cutting blade has a cutting edge that forms a straight line parallel to the longitudinal direction of the horn, and is fixed to the end face opposite the opposing surface of the mounting member at a position offset from the bolt. The fixing means is
a bolt insertion hole formed in at least one of both side surfaces of the tip of the horn parallel to the longitudinal direction of the horn, the bolt insertion hole penetrating to the inclined tip surface of the horn;
a screw hole formed in the inclined opposing surface of the mounting member at a position continuous with the bolt insertion hole;
3. The ultrasonic machining device according to claim 2, further comprising a bolt that is inserted into the bolt insertion hole from the one side surface of the horn and screwed into the screw hole to fix the mounting member to the horn. The ultrasonic processing device according to claim 7, characterized in that a cutting blade having a cutting edge that forms a straight line parallel to the longitudinal direction of the horn is fixed to approximately the center of the end face of the mounting member opposite the opposing face. The ultrasonic processing device according to claim 5 or 8, characterized in that the cutting blade has a cutting edge shape that forms a predetermined cutting pattern consisting of a combination of straight lines and curves, and is fixed to the end face of the mounting member opposite the opposing face.

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