JPH09155288A - Method for mounting vibrator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate alignment by inserting an adjusting rod to be inserted into the adjusting hole of a different pitch connecting bolt from the lining plate side of the vibrator of a bolted Langevin type transducer for deflection vibration when the deflection vibration direction of this vibrator and the desired vibration direction of a horn are aligned. SOLUTION: The horn 19 is first fixed by a fixing means, such as vice, at the time of work and a wrench is inserted to the wrench seat 49 of the through-type BLT(bolted Langevin type transducer) vibrator 24. The vibrator 4 is then tightened to the horn 19 by adequate tightening torque. The horn 19 and the vibrator 24 are loosened by the wrench in this state when the vibration direction C of the vibrator 24 is not aligned to the desired vibration direction of the horn 19. The adjusting rod 42 is rotated to a suitable extent clockwise or counterclockwise by a handle 45 in the state of inserting the adjusting rod 42 from the lining plate 25 side of the vibrator 24 and, thereafter, both are tightened with the adequate torque by the wrench. Both vibration directions D, C are aligned by repeating the operation of this pitch alignment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a BLT vibrator for flexural vibration among ultrasonic vibrators, and in connection with a horn or the like corresponding to a tool part,
Since it is a flexural vibration, B is applied to the desired vibration direction of the horn.
The present invention relates to a method for connecting a BLT oscillator and a horn by adjusting the positional relationship between them so that the vibration directions of the LT oscillator itself match.

[0002]

2. Description of the Related Art Application fields utilizing high-speed mechanical vibration under ultrasonic frequencies include ultrasonic welding of plastic molded products, ultrasonic welding of metals, ultrasonic welding of gold wire welding of IC chips, and ultrasonic welding. Used in various fields such as industrial fields such as ultrasonic cleaners, ultrasonic aspirators for soft tissues such as cancer and tumors, ultrasonic surgical devices for cutting bone cutting, ultrasonic surgical devices for cataract treatment, etc. There is.

The mechanical vibration mode of ultrasonic waves which has been industrially put into practical use is longitudinal vibration, and is generated by a transducer for generating ultrasonic waves, that is, an ultrasonic oscillator which is one type of high frequency oscillator. An ultrasonic transducer that converts electrical energy in a high frequency region into mechanical energy called vibration is a so-called BLT (bolt) in which a plurality of piezoelectric elements are tightened with bolts in a sandwich structure with a front plate and a back plate made of metal. It has a clamped Langevin type transducer) type oscillator structure, and the piezoelectric element is PZT.
By imparting polarization to ceramics such as (lead zirconate titanate) or barium titanate, piezoelectricity, that is, when pressure is applied, a potential is generated, and conversely, when a potential is applied, pressure, that is, expansion or contraction of the piezoelectric element. When the electric potential is an alternating electric potential due to a high frequency, the piezoelectric element can expand and contract, that is, vibrate at a frequency corresponding to the frequency of the high frequency electric potential. This piezoelectric element usually takes the shape of a disk, and the center portion of the disk is hollowed out concentrically to form a 5-yen coin shape with a center hole. A thin film whose main component is copper that serves as electrodes before and after the piezoelectric element. A vibrator having a structure in which a front plate and a backing plate are tightened by passing a bolt through a center hole through a metal plate is a vertical vibration BLT type vibrator.

When high frequency power generated by an ultrasonic oscillator is supplied to this BLT vibrator for longitudinal vibration, a plurality of disc-shaped piezoelectric elements expand and contract under the resonance frequency of the BLT vibrator to change the vibration state. You can get it, but this vibration mode is B
Vibration in the axial direction of the LT oscillator is the main component, and this is a so-called longitudinal vibration mode in which weak vibration of the subcomponent is generated in the radial direction.

In recent years, technological development has been promoted in the flexural vibration mode as well as in the longitudinal vibration mode, and the BLT vibrator itself has reached a level at which it can be driven. However, compared with the longitudinal vibration mode, the flexural vibration mode is difficult to put into practical use due to the peculiarity of the vibration direction and the difficulty in the connection method with the horn that is the working unit.

The conventional flexural vibration system will be described in detail below with reference to FIGS. FIG. 5A shows a conventional method B.
1 shows an example of an LT-type flexural vibrator, in which a vibrating element 1 is composed of a piezoelectric element such as PZT or barium titanate, and has a shape obtained by dividing a two-sided five-circle coin shape into two. In this example, four sets are combined. The combination of these half-divided elements has a structure in which the polarities of the piezoelectric elements are mutually inverted. That is, in the drawing of the first vibrating element 1, the polarities of the upper half-divided elements on the right side are + (plus) and-(minus) on the right side. The polarity is − on the right side and + on the left side. In the drawing of the second vibration element 2, the polarity of the upper half-divided element is
The right side is the same as the left side of the upper half-divided element of the vibration element 1, and the left side of the upper half-divided element of the vibration element 2 is +.
Regarding the polarity of the half-divided element below the vibrating element 2, the right side is + and the left side is −. A hollow electrode plate 5 made of beryllium copper or the like is inserted between the vibrating element 1 and the vibrating element 2. The third vibrating element 3 and the fourth vibrating element 4 are also configured in the same arrangement as the vibrating elements 1 and 2, and the polarities of the half-divided elements facing each other via the electrode plates 5, 6, and 7 are the same. In addition, the polarities of the upper half-divided element and the lower half-divided element facing each other in the vertical direction are opposite polarities as shown in the figure. A gap 9 is provided between the upper half-divided element and the lower half-divided element.

In order to assemble these elements as a BLT vibrator, a round bar-shaped backing plate 10 made of metal is interposed on the right side of the vibrating element 1 in the drawing via the electrode plate 8 and the left side of the vibrating element 4 in the drawing. A round bar-shaped front plate 11 made of metal is provided on the. Although not shown, the backing plate 10 and the front plate 11 are said to tighten the vibrating elements 1, 2, 3, 4 and the electrode plates 5, 6, 7, 8 via bolts on their respective central axes. It has a so-called BLT structure. The outer diameter of the bolt may be an appropriate dimension that is smaller than both the inner diameter of the 5-yen coin shape and the inner diameter of the hollow electrode plate.

The front end side of the front plate 11, that is, the small-diameter portion 12 on the left side in the drawing, can have a larger amplitude, which will be described later, by making the outer diameter smaller than the outer diameter of the main body of the front plate 11. The small diameter portion 12 is provided with a female screw 13 so as to be connected to a working end side such as a horn. A cable 14 is connected to each of the electrode plates 5 and 7 by soldering or the like, and the ultrasonic oscillator 1
Connect to 5. On the other hand, the electrode plates 6 and 8 are connected to the cable 16 by soldering or the like and the ultrasonic oscillator 15 is connected.
Connect to. The ultrasonic oscillator 15 is a high-frequency oscillator that supplies electric power necessary to drive the BLT oscillator 17, and its frequency is the same as the resonance frequency of the BLT oscillator 17.

Next, the drive pattern of the BLT vibrator 17 will be described with reference to FIGS. 5 (a) and 5 (b). The high frequency power generated by the ultrasonic oscillator 15 is supplied to the electrode plates 5, 7 and the electrode plates 6, 8 by the cable 14 and the cable 16, and the high frequency power is generated by the electrode plates 5, 7 and the electrode plates 6, 8. The alternating electric field supplied to is + on the cable 14 side,
If the cable 16 side is-, it is on the upper side 4 in the drawing.
The four half-divided element sides on the lower side expand, and the four half-divided element sides on the lower side contract. Next, when the cable 14 side is − and the cable 16 side is +, the four half-divided element sides on the upper side are Shrinkage,
Since the four half-divided elements on the lower side extend, the expansion and contraction in the opposite directions are performed the number of times of the high frequency power.
The portion corresponding to the antinode of the amplitude mode of the LT oscillator generates so-called flexural vibration.

FIG. 5B is a pattern diagram showing the amplitude mode of the flexural vibration. The vibration direction is the vibration element 1,
It vibrates in a direction perpendicular to a plane formed by the gap 9 provided between the upper and lower half-divided elements 2, 3, and 4, that is, a gap surface, that is, a plane perpendicular to the paper surface in the drawing, that is, BLT vibration. 5 shows a vibration distribution in the vertical direction with respect to the axis center line of the child 17, and for example, the vertical amplitude of the connecting end 18 which is the tip of the small diameter portion 12 of the front plate 11 is 2v in FIG. If it is displayed as shown in FIG.
It can be expressed by v and -v. The BLT vibrator 17 shown in FIG. 5 has a resonance length of 3 times λ / 2 (λ: wavelength), and its vibration mode has an amplitude of 0 (amplitude 0) at the left end face of the vibrating element 4 in contact with the front plate 11 side. 0), the vibrating element 1 side adjacent to the backing plate 10 side is antinode, the longitudinal center point of the backing plate 10 is node, the right end of the backing plate 10 is antinode, and the front plate 1
1 near the center point in the longitudinal direction of the large diameter portion, the left end of the large diameter portion of the front plate 11 is a node, and the connecting end 1 of the small diameter portion 12 of the front plate 11 is 1.
8 is a vibration distribution with 8 as an antinode. Connection end 1 of small diameter part 12
The amplitude of No. 8 is expanded in inverse proportion to the square of the diameter with respect to the amplitude value of the abdomen of the large diameter portion of front plate 11.

Next, a conventional method in which a horn as a working end is connected to the BLT vibrator 17 will be described with reference to FIG. FIG. 6A is a front view in which the horn 19 is connected to the BLT oscillator 17 described in FIG. 5, and FIG. 6B is a left side view. In the case of this example, the horn 19
Has a rectangular shape, and is a working end 20 that is the tip of the horn 19.
Is flexed and vibrated in the direction of the arrow on the left side of FIG. The horn 19 and the BLT vibrator 17 are connected to each other by the female screw 13 provided on the small diameter portion 12 of the BLT vibrator 17 and the horn 19 side, and the horn side female screw 21 having the same pitch as the horn side female screw 13.
And are connected with a set screw 22. The connection direction of the rectangular horn 19 should be such that the plane of the horn 19 is located in a plane defined by the gap 9 provided between the half-divided vibrating elements of the BLT oscillator 17, that is, the plane of the horn 19 is parallel to the gap plane. is important. That is, the desired vibration direction of the horn 19 is B
It is an indispensable condition in the case of the flexural vibration system that the horn 19 is installed so as to be in a direction perpendicular to the clearance surface of the LT vibrator. However, alignment by this conventional method is extremely difficult as described below.

The BLT vibrator 17 and the horn 19 are connected by a female screw on the BLT vibrator 17 side and a female screw 21 on the horn side.
Since it is a method of simply connecting and with
When the LT oscillator 17 and the horn 19 are tightened up, the gap surface of the half-divided oscillator of the BLT oscillator 17 and the upper surface of the rectangular horn 19 do not always come to be in parallel positions. Therefore, a method has been attempted in which a metal flat washer 23 having different thicknesses is sandwiched between the connecting portions to adjust the pitch, but the alignment is difficult and the flat washer 2
By inserting 3 in between, the vibration amplitude of the connecting end 18 of the small diameter portion 12 of the BLT vibrator 17 is attenuated by this flat washer 23 and does not propagate to the horn 19 side, and the working end 20 of the horn 19 vibrates. Otherwise, there is a drawback that the loss is large even if it propagates and the desired amplitude cannot be obtained, and this connection method is difficult, so that there is a big drawback that the flexural vibrator is industrially difficult to put into practical use.

[0013]

SUMMARY OF THE INVENTION The present invention relates to a method for attaching a BLT vibrator for flexural vibration to a horn or the like corresponding to a tool section. As described above, the conventional method is BLT.
It is extremely difficult to match the flexural vibration direction of the vibrator with the desired vibration direction of the horn, and the positioning method by inserting a flat washer, etc., has a large propagation loss of vibration amplitude and cannot be practically used. To have
The flexural vibrator has a problem that it is difficult to put it into practical use industrially. The present invention has been made as a result of various studies in order to solve such a problem, and an object of the present invention is to determine a positional relationship between a BLT oscillator and a horn with respect to a desired vibration direction of the horn. Another object of the present invention is to provide a novel method by which the vibration directions of the vibrator itself can be easily matched.

[0014]

SUMMARY OF THE INVENTION The present invention provides a flexural vibration BLT vibrator connecting method.
A through hole is provided in the axis of the vibrator, and the connection with a horn or the like that serves as a tool part is temporarily connected with connecting bolts with different pitches and adjustment holes, and then the through hole is provided from the backing plate side of the BLT vibrator.
By inserting the adjusting rod into the through hole of the LT oscillator (hereinafter referred to as the through type BLT oscillator), reaching the adjusting hole of the stepped bolt, and freely aligning the different pitch connecting bolts, the horn is desired. The vibration direction of the BLT vibrator itself can be easily matched with the vibration direction.

The present invention will be described in detail below with reference to the drawings. FIG.
1A is a through-type BLT vibrator for flexural vibration in the mounting method of the present invention, FIG. 1A is a partially cut front view thereof, and FIG. 1B is a BB ′ cross section of FIG. 1A. Figure, Figure 1
1C is a right side view of FIG. 1A. The through-type BLT vibrator 24 includes a backing plate 25 and a front plate 2.
6, 4 sets of half-divided vibrating elements 27, 4 electrode plates 2
8 and these vibrating elements 27 and electrode plate 28 are backing plates 25
The center bolt 29, which is a bolt tightened by the front plate 26 and the front plate 26, may have the same material and outer shape as the BLT vibrator described above with reference to FIG. Backing board 2
5, the center bolt 29 and the front plate 26 are provided with through holes 30 on their respective axial cores, that is, the central axis in the horizontal direction in FIG. 1 (a), and then the electrode plate 28 and the vibration element 27 are sandwiched. Or a BLT structure, and then a through hole 30 is provided from the backing plate 25 side or the small diameter portion 31 side of the front plate 26 by a suitable drilling means such as a long drill. Good.

In FIG. 1B, the oscillating elements 27 divided into two parts are opposed to each other with a gap 9 provided therebetween. The outer diameter of the center bolt 29 is made smaller than the inner diameter of the vibrating element 27 to electrically insulate. The outer diameter and inner diameter of the electrode plate 28 are usually adjusted to the outer diameter and inner diameter of the vibrating element 27, respectively. The through hole 30 may be installed on the axis of the center bolt 29. In FIG. 1C, the through hole 30 may be installed in the axis of the backing plate 25. The inner diameter of the through hole 30 may be any size larger than the outer diameter of the adjusting rod (42 in FIG. 2) in the present invention described later, as long as the required tightening torque applied to the center bolt 29 is not impaired. In FIG. 1A, the vibration direction of the small diameter portion 31 of the through-type BLT vibrator 24 is the direction of the double-headed arrow C.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, one embodiment of the method of the present invention will be described in detail with reference to FIGS. 2 shows the horn 1
The present invention for making the vibration direction of the penetrating BLT vibrator 24 itself, that is, the direction of the double-headed arrow C in FIGS. 1A and 2 and the direction of the double-headed arrow D in FIG. 3 specifically shows the connection method by. The horn 19 of this embodiment has the same rectangular shape as the horn in the conventional technique, and the desired vibration direction of the horn 19 is the direction of the double-headed arrow D in the drawing. Through-type BLT oscillator 2 for obtaining this vibration direction D
The mounting direction of 4 is the clearance surface 33 formed by the clearance 9 of the through-type BLT vibrator 24, that is, the clearance surface 33 shown in FIG.
Is parallel to the position perpendicular to the desired vibration direction D, that is, the upper surface portion 32 of the rectangular horn 19 and the gap surface 33 formed by the gap 9 between the vibration elements 27, that is, the gap surface 33 shown in FIG. 1B. At the position where
It is an essential condition to tighten it.

It is an essential condition that the connecting bolt used in the method of the present invention for connecting the horn 19 and the through-type BLT oscillator 24 is the different pitch connecting bolt 34 with an adjusting hole.
For details of the different pitch connection bolt 34 with an adjustment hole, see FIG.
It will be described according to the following. FIG. 3A is a front view of a different pitch connection bolt 36 with an adjusting hole in which the adjusting hole is a hexagonal hole 35, and FIG.
3B is a right side view of the different-pitch connecting bolt 36 with an adjusting hole, FIG. 3C is a front view of the different-pitch connecting bolt 38 with an adjusting hole in which the adjusting hole is the slit 37, and FIG. Is
The right side view of the different pitch connection bolt 38 with an adjustment hole is shown, respectively. The different-pitch connection bolts 36 with adjustment holes shown in FIGS. 3A and 3B have a male thread shape with a coarse pitch portion 39 on the left side and a fine pitch portion 40 on the right side in the drawing, and a middle portion is a step without a male thread. The attachment part 41. The different pitch connection bolts 38 with adjustment holes shown in FIGS. 3 (c) and 3 (d) are shown in FIGS. 3 (a) and 3 (b).
Similarly, the left side in the drawing is a male pitch shape having a coarse pitch portion 39 and the right side is a fine pitch portion 40, and the middle portion is a stepped portion 41 having no male thread.

Different pitch connection bolts 36 with these adjusting holes
And 38 are different pitch connection bolts 3 with adjustment holes shown in FIG.
4, the coarse pitch portion 39 is provided on the horn 19 side, which is the tool-side connecting portion, and the fine pitch portion 40 having the hexagonal hole 35 or the slit 37 is provided.
It is used on the small diameter portion 31 side which is the transducer side connecting portion of No. 4. 2 and 3, first, the coarse pitch portion 39 of the different pitch connection bolt 34 with an adjusting hole is screwed into the female thread portion of the horn up to the vicinity of the intermediate portion of the stepped portion 41, and then the through-type BLT vibrator 2
The small pitch portion 40 of the connection bolt 34 with the adjusting hole is screwed into the small diameter portion 31 of No. 4 so that the horn 19 and the small diameter portion 31 are in light contact with each other.

Next, an adjusting rod for making the desired vibration direction D of the horn 19 and the vibration direction C of the penetrating BLT vibrator 24 coincide will be described with reference to FIGS. 2, 3 and 4.
FIG. 4A shows an adjusting rod 46 having a hexagonal wrench portion 44 having a hexagonal rod shape at the left end in the drawing of the shaft 43 and a handle 45 at the right end in the drawing.
FIG. 4B is a left side view of the hexagonal wrench portion 44 of FIG. Further, in FIG. 4C, the left end of the shaft 43 in the drawing has a minus driver portion 48 in the shape of a bar, and the adjusting rod 47 has a handle 45 at the right end of the drawing.
4D is a left side view of the flat-blade screwdriver portion 48 of FIG. 4C.

Different pitch connection bolts 3 with adjusting holes shown in FIG.
4 is a different pitch connection bolt 36 with an adjustment hole having the hexagonal hole 35 shown in FIGS. 3 (a) and 3 (b),
The adjusting rod 46 of (b) is used. Further, the different-pitch connection bolt with adjustment hole 34 shown in FIG. 2 is different from the different-pitch connection bolt with adjustment hole 38 having the slits 37 in FIGS. 3C and 3D.
In this case, the adjusting rod 47 shown in FIGS. 4 (c) and 4 (d) is used.

In FIG. 2, the horn 19 is fixed by a fixing means such as a vise, and the spanner seat 4 of the penetration type BLT vibrator 24 is fixed.
Insert a wrench into 9 and put through type B with proper tightening torque.
The LT oscillator 24 is fastened to the horn 19. In this state, the penetration type BL with respect to the desired vibration direction D of the horn 19.
When the vibration directions C of the T oscillators 24 do not match,
The horn 19 and the penetrating BLT vibrator 24 are loosened with a spanner inserted in the spanner seat 49, and the adjusting rod 42 is inserted into the penetrating BLT.
Inserted from the backing plate 25 side of the oscillator 24, the different pitch connection bolts 34 with adjusting holes are the hexagonal holes 3 shown in FIGS. 3 (a) and 3 (b).
In the case of the connecting bolt 36 with an adjusting hole having 5, the hexagon wrench portion 44 of the adjusting rod 46 is inserted into the hexagonal hole 35, and the different pitch connecting bolt 34 with an adjusting hole is shown in FIGS. 3 (c) and 3 (d). In the case of the connecting bolt 38 with the adjusting hole having the slit 37, the adjusting rod 42 is rotated by the handle 45 to the right or left while the minus driver portion 48 of the adjusting rod 47 is inserted into the slit 37 (FIG. 2). Rear spanner 4
Tighten to the proper torque with a spanner inserted in 9. By repeating this pitch matching operation, the desired vibration direction D of the horn 19 is changed to the vibration direction C of the penetration BLT vibrator 24.
And can be matched exactly. This is the horn 19
This is possible because the different pitch connection bolts 34 with adjusting holes for connecting the through type BLT vibrator 24 and the through type BLT vibrator 24 have different pitches.

In the lower part of FIG. 2, the desired vibration direction D of the horn 19 and the penetrating BLT vibrator 24 are connected to the horn 19 and the penetrating BLT vibrator 24 by the method of the present invention using the different pitch connecting bolts 34 with adjusting holes. 5 shows a flexural vibration amplitude pattern when the vibration direction C of the small-diameter portion 31 of FIG.
The pattern is the same as the pattern shown in FIG.
The connecting portion of the T oscillator 24 with the small-diameter portion 31 shows flexural vibration in which the antinode of the vibration amplitude and the intermediate position 50 of the horn 19 is the antinode of the tip 51 of the knot horn 19.

In the above embodiment, the coarse pitch portion 39 of the different pitch connecting bolts 36 to 38 with the adjusting holes is provided on the horn 19 side.
Although the fine pitch portions 40 of the different pitch connection bolts 36 with adjusting holes are used on the small diameter portion 31 side of the through-type BLT vibrator 24, the coarse pitch portion and the fine pitch portion may have opposite pitch configurations. The hexagonal hole 35 or the slit 37 has been described as the shape of the adjustment hole, but the shape is not particularly limited as long as it is a means capable of rotating the connection bolt. Further, although not shown between the through-type BLT oscillator 24 and the horn 19, when a booster for amplitude amplification or joints for length adjustment are joined, the booster or the joints and the through-type BLT vibration are also joined. It is within the scope of the present invention to use the different pitch connection bolt system with adjusting holes according to the method of the present invention for the connection portion between the sub-elements 24.

[0025]

According to the method of the present invention, the BLT for flexure is used.
The flexural vibration direction of the vibrator and the desired vibration direction of the horn are
It can be matched easily and completely, which is one of the conventional defects.
Since it is possible to prevent the propagation loss of the vibration amplitude due to the insertion of the flat washer, which is also a problem, it is possible to provide a technique useful for the practical application of the flexural vibrator.

[Brief description of the drawings]

FIG. 1 is a through-type BLT vibrator for flexural vibration according to the present invention, in which (a) is a partially cut front view and (b) is (a).
BB 'sectional drawing, (c) is a right side view of (a).

FIG. 2 is an example of a method of mounting a through-type BLT oscillator according to the present invention, in which the upper stage shows a perspective view and the lower stage shows a flexural vibration amplitude pattern.

FIG. 3 is an example of a different pitch connection bolt with an adjustment hole used in the present invention, (a) and (b) are front views, (c) and (d) are right side views.

FIG. 4 is an example of an adjusting rod used in the present invention, in which (a),
(B) is a front view, (c), (d) is a left side view.

FIG. 5 shows a conventional bending BLT oscillator, in which the upper part shows a partially cut front view and the lower part shows a pattern of the amplitude of the flexural vibration.

6A and 6B show a conventional BLT transducer for bending with a horn attached, in which FIG. 6A is a partially cut front view thereof, and FIG.
Is a right side view of (a).

[Explanation of symbols]

 1,2,3,4 Vibrating element 5,6,7,8 Electrode plate 9 Gap 10 Backing plate 11 Front plate 12 Small diameter part 13 Female screw 14,16 Cable 15 Ultrasonic oscillator 17 BLT transducer 18 Connection part 19 Horn 20 Work End 21 Female screw on horn side 22 Implant screw 23 Flat washer 24 Penetration type BLT vibrator 25 Backing plate 26 Front plate 27 Vibrating element 28 Electrode plate 29 Center bolt 30 Through hole 31 Small diameter part 32 Upper surface part 33 Gap surface 34 Different pitch connection with adjusting hole Bolt 35 Hexagon socket 36 Different pitch connection bolt with adjustment hole 37 Slit 38 Different pitch connection bolt with adjustment hole 39 Coarse pitch part 40 Fine pitch part 41 Stepped part 42 Adjustment rod 43 Shaft 44 Hexagon wrench part 45 Handle 46 Adjustment rod 47 Adjustment Rod 48 Slotted screwdriver 49 Spanner seat 50 Intermediate position 51 Tip Part

Claims (1)

[Claims] 1. A method for making a flexural vibration direction of a flexural vibration BLT vibrator and a desired vibration direction of a horn corresponding to a tool part coincident with each other, a through hole is provided in a shaft core of the flexural vibration BLT vibrator, The connecting portion of the BLT vibrator having a through hole and the connecting portion of the tool such as a horn, booster, or join are connected with different pitch connection bolts with adjusting holes, and the backing plate side of the BLT vibrator is connected. From this, insert an adjustment rod that can be inserted into the adjustment hole of the different pitch connection bolt with an adjustment hole, and adjust the pitch with this adjustment rod while connecting the tool side connection part such as horn, booster, joint, etc. and the penetration type BLT vibrator. A method for mounting a BLT vibrator for flexural vibration, characterized by tightening.