JPS6222650Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device, and more particularly, to a connecting device for connecting rod-like members or rod-like handles each having a cylindrical end or the like.

In machining, electrical processing, and even mechanical and electrical equipment, it is common to connect rod-shaped members to each other, such as connecting a tool or a tool handle with an electrode to a rotating or servo spindle main shaft, and the connection means is Various types are also known. for example,
Those described in Japanese Utility Model Publication No. 38-6246 (hereinafter referred to as conventional example 1) and Japanese Utility Model Publication No. 45-5320 (hereinafter referred to as conventional example 2) are known. In conventional example 1, the tip of the sawtooth is only in pressure contact with the inner wall of the pipe,
Mechanical strength was not sufficient, and current conduction and vibration transmission characteristics were still insufficient. Conventional example 2
In this type, an annular locking plate is tightly fitted and fixed to a nut, and when it is screwed into a bolt by a nut, it bends elastically to match the pitch of the bolt. , one pitch twist, which prevents the nut from loosening. However, the locking plate in Conventional Example 2 is not pressed and fixed to the bolt by external force, but merely acts elastically on the bolt to restrict the movement of the nut. A swash plate in the present invention, which is interposed between two connected members and fixed by pressure, for the purpose of breaking or breaking a mechanical connection, connecting to provide electrical conduction, or transmitting vibrations. They are completely different. in this way,
Conventionally, there are relatively few devices that have not only mechanical connections but also electrical connections that have sufficient electrical conductivity and excellent vibration transmission properties, and that can also adjust the degree of connection, that is, the strength and weakness. However, it has drawbacks such as a complicated structure.

In view of the above-mentioned conventional circumstances, the purpose of the present invention is to provide a core that has a simple structure, has sufficient mechanical and electrical connection performance, has excellent vibration transmission characteristics, and can be installed quickly and reliably. To provide a connecting device with high delivery accuracy. In order to achieve such an object, the present invention includes a first member having a columnar end;
The end portion is cylindrical with a bottom, and the inner diameter thereof is equal to the first diameter.
A coupling device for connecting a second member having a diameter larger than the outer diameter of the top of the end of the member, the disc-shaped member having an inner hole in the center, the diameter being larger than the outer diameter end and the inner circumference end. having a plurality of notches formed in the direction,
At least one swash plate is provided, the disc part of which is inclined in a shade shape at a predetermined angle to one side with respect to the center part, and the swash plate is placed inside the cylindrical part of the second member with the other side facing outward. The ends of the columnar members of the first member are fitted into the inner holes of the swash plate, and the swash plate is pressed and fixed from the other side. The first member and the second member are connected to each other.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

The coupling device of the present invention shown in FIG. It is connected to a second rod-shaped member 2 having a cylindrical shape. A bottomed cylindrical member 3 is fixed to the lower end of the second rod-like member 2.
A plurality of plate-shaped or ring-shaped laminated swash plates 4 are inserted into the cylindrical portion of the cylindrical member 3. This swash plate 4 is shaped like a spring, for example, a hollow truncated cone-shaped piece punched out of a clockwork strip material, and is relatively thin and has an inner hole 4a in the center, as shown in detail in FIGS. 2a and 2b. A plurality of notches 4b having relatively small gaps are formed in substantially the same shape in the radial direction from the outer periphery and the inner periphery. Further, as can be seen from the cross section shown in FIG. 2b, this swash plate 4 is formed into a hat shape with a disk portion inclined at a predetermined angle to one side with respect to the center portion. After inserting and arranging the swash plate 4 inclined to one side so that its inclined outer side faces the inside of the cylindrical portion of the cylindrical member 3, the inner hole 4 of the swash plate 4 is inserted.
Although the rod-shaped member 1 and the swash plate 4 may be configured to be inserted and removed as appropriate, such as by inserting the end of the first rod-shaped member 1 into the inside of the rod-shaped member 1 includes an insertion portion 1a such as a small diameter portion of the swash plate 4.
is provided, and the swash plate 4 is configured to be movable in the axial direction by a small length in the insertion portion 1a, and is normally held on the rod-shaped member 1 side as a rotatable or rotatable locking connection (sply connection). ing. Then, a short cylindrical ring-shaped member 5 with a flange is screwed onto a threaded portion formed at the open end of the inner wall in the cylindrical portion of the cylindrical member 3, and the swash plate 4 is being pushed upward.

In this structure, unless the swash plate 4 is pressed from below by the ring-shaped member 5, that is, before it is pressed, the swash plate 4 does not touch the inside of the cylindrical portion of the cylindrical member 3 or the first It also fits into the insertion portion 1a of the rod-shaped member 1 relatively loosely with a gap, and the two are not strongly connected. However, as mentioned above, when the ring-shaped member 5 is screwed in from below and the swash plate 4 is pressed upward,
The outer peripheral end disposed at the top of the swash plate 4 comes into contact with the bottom outer periphery of the cylindrical portion, that is, the upper end. If this is pressed further, the swash plate 4 is provided with a plurality of notches 4b, which makes it flexible, and the ring-shaped member 5 moves closer to the inner circumference of the swash plate 4. Since it is pressed, the swash plate 4 is tilted at a predetermined angle in a shade shape.
The inclination angle decreases from the cap-like state, and the disk portion deforms in the direction of becoming horizontally flat. This is because as the pressing force by the ring-shaped member 5 becomes stronger, the opening at the outer peripheral end of the notch 4b of the swash plate 4 widens, but the opening at the inner peripheral end becomes narrower, and as a result, the swash plate 4 becomes flat in the horizontal direction. As a result, the outer peripheral end diameter of the swash plate 4 increases and the inner peripheral end diameter decreases, and the inner peripheral wall of the cylindrical member 3 and the first
The insertion portion 1a of the rod-shaped member 1 strongly contacts and bites into the outer periphery of the rod-shaped member 1, and as a result, both members 1,
3 are mechanically connected with sufficient strength through the swash plate 4. Such a connection is performed in such a way that the diameters of the inner peripheral end and the peripheral end of the swash plate 4 decrease and increase, and strongly bite into the outer and inner peripheral surfaces of the members 1 and 3 in the radial direction and in a radially uniform manner. Therefore, the degree of coupling is strong, and the first rod-shaped member 1 and the second rod-shaped member 2
and are firmly connected in a centered state. Furthermore, when each of the above members is made of a conductive material, the conductivity is good, and the electrical connection is made from the first rod-shaped member 1 through the swash plate 4, and further to the cylindrical member 3.
This is done through the second rod-shaped member 2 via the 2nd rod-shaped member 2, so that contact failure does not occur and a large current capacity can be achieved.

In addition, in the inner hole 4a of the swash plate 4 shown in FIG. 2a,
In order to prevent mutual rotation, two slots 4e are formed, which are fitted into a spline (not shown) formed on the outer periphery of the insertion portion 1a of the first rod-shaped member 1, and rotationally locked to prevent rotational direction. Can be positioned.

FIG. 3 shows a structure that is almost the same as that shown in FIG.
In addition, recesses 4d and 4e are formed, respectively, and the recesses 4d and 4e are formed in the rod-shaped member 1 that fits on the inner periphery and the cylindrical member 3 that fits on the outer periphery, respectively.
forming convex portions 4f and 4g that engage with each other, and determining the rotational position and direction between each member by fitting them together;
This prevents it from shifting easily.

Figure 4 shows the application of the coupling device of the present invention to an ultrasonic vibrator system used in ultrasonic processing, etc. In Figure 3, a horn is used to magnify the ultrasonic vibrations generated from the ultrasonic vibrator. A tool 12 for ultrasonic machining is connected to the lower end of the tool 10 using the same plurality of swash plates 4 as shown in FIGS. 2a and 2b. Further, in detail, the swash plate 4 is fitted into a hole formed at the lower end of the horn 10, and is formed at the upper part of the tool 12 within an inner hole 4a formed at the center of the swash plate 4. The swash plate 4 is shaped like a cap in the same way as described above by inserting the narrow diameter part formed at the upper end of the narrow diameter part and screwing the threaded part formed at the upper end of the narrow diameter part into the threaded part of the horn 10 and tightening it. The angle of inclination decreases from the state shown in FIG. 2, and the disk portion is deformed to become horizontally flat, and the outer peripheral end and the inner peripheral end of the swash plate 4 are strongly bitten into the horn 10 and the tool 12, respectively. The tool 12 is connected to the tool 12. In general, in order to efficiently transmit ultrasonic vibrations, connecting only by the threaded portion is insufficient because it may break due to fatigue, so the swash plate 4 is used in this way and is forced into the two parts. Therefore, it is necessary to connect them in a strong elastic state, and the connecting device of the present invention can be connected with sufficient mechanical strength even in such cases, has excellent vibration transmission characteristics, and is an excellent product that can withstand long-term use. It provides a connection and can efficiently transmit ultrasonic vibrations.

As explained above, according to the present invention, the swash plate is pressed in the direction of flattening and fixed between the two members to be connected, so that the two members are connected. It is extremely strong, has sufficient mechanical and electrical connection performance, has excellent vibration transmission characteristics, can be installed quickly and reliably, has high centering accuracy, and has a simple structure. It has become a thing.

[Brief explanation of the drawing]

1 is a sectional view of a coupling device showing an embodiment of the present invention, FIGS. 2a and 2b are a plan view and a sectional view taken along line B-B of a swash plate used in the coupling device of FIG. 1, respectively; FIG. 3 is a cross-sectional view of a connecting device showing another embodiment of the present invention, and FIG. 4 is a cross-sectional view of a connecting device showing still another embodiment of the present invention. 1...First rod-shaped member, 2...Second rod-shaped member, 3...Cylindrical member, 4...Swash plate.

Claims (1)

[Claims for Utility Model Registration] A first member having a columnar end, and a cylindrical end with a bottom, the inner diameter of which is larger than the outer diameter of the columnar end of the first member. A connecting device for connecting a second member which is a disc-shaped member having an inner hole in the center, a plurality of cuts formed in the radial direction from the outer peripheral end and the inner peripheral end, and At least one or more swash plate is provided with a disk portion inclined at a predetermined angle in the shape of a shade on one side with respect to the second member, and the swash plate is placed inside the cylindrical portion of the second member with the other side facing the outside. The ends of the columnar members of the first member are fitted into the inner holes of the swash plate, and by pressing and fixing the swash plate from the other side, the first A connecting device for connecting a member and a second member.