KR200468660Y1 - Index drive device - Google Patents

Abstract

The present invention relates to an index drive device, the outer cylinder portion 100 is formed in a cylindrical space on the inside, and the worm wheel 220 which is provided inside the outer cylinder portion 100 and receives power from the motor (M) is fixed to the outer periphery It is configured to include a cylindrical rotating part 200 and the fixing part 300 which is provided at one end of the rotating part 200 to selectively fix the rotating part 200, the fixing part 300, the inner side is the A cylindrical tapered sleeve 310 which is interviewed on the outer surface of the rotating part 200 and is formed in a tapered shape and one side is cut in the axial direction, and a taper hole corresponding to the outer shape of the tapered sleeve 310 is formed inside. It is characterized by consisting of a locking piston 320 which slides in the axial direction. The index drive device according to the present invention has an advantage that the rotation angle can be finely adjusted and the rotation fixing force is excellent.

Description

Index Drive Device {INDEX DRIVE DEVICE}

The present invention relates to an index drive device, and more particularly, after a workpiece is rotated at a desired angle using an index drive, a fixing part is provided to prevent rotation of the index drive when machining the workpiece with a tool. It relates to an index drive device.

Various machine tools use an index drive device that can be processed while rotating the workpiece at various angles while the workpiece is fixed.

In general, the index drive device is installed on the shaft to support the table and the jig to secure the workpiece on one side to support the bearing inside the outer cylinder, the drive motor and the worm shaft and the worm wheel to be configured to be driven, the rotating shaft The upper part is fixed to the inside of the outer cylinder part, and the fixing part which operates by hydraulic pressure, pneumatic, etc. is combined so that the rotating part may be prevented from rotating arbitrarily.

In such an index drive device, the fixing portion plays an important role in preventing the rotating portion from rotating arbitrarily for precision machining of the workpiece.

However, the index drive device has the following problems.

When the structure of the fixing part is configured to fix the rotating table body as necessary by attaching and detaching the rod by a piston movement to a plurality of insertion grooves formed on the lower surface of the table on which the workpiece is fixed, the table is divided in accordance with the insertion groove. Since only the angle should be adjusted, the fixing angle of the workpiece cannot be finely adjusted, and there is a problem in that the fixing failure occurs when the table is not rotated according to the precisely divided angle.

In addition, when the structure of the fixing part has a planar contact structure in which the fixing part applies a radial force from the outside of the rotating part to press the outer surface of the rotating part, the contact force of the fixing part in contact with the outer surface of the rotating part is weak. When machining a workpiece in a state in which the workpiece is fixed to the slip phenomenon occurs between the fixed portion and the rotating portion has a problem that it is difficult to precise machining of the workpiece.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide an index drive device having a finely adjustable rotation angle.

Another object of the present invention is to provide an index drive device having an excellent contact force of a fixing part in contact with a rotating part.

According to a feature of the present invention for achieving the object as described above, the index drive device according to the present invention, the outer cylinder portion is formed in a cylindrical space on the inside, and the worm wheel is provided on the inner cylinder portion inside the power transmission from the motor And a fixing part provided at one end of the rotating part to fix the rotating part selectively, wherein the fixing part has an inner side in contact with an outer surface of the rotating part and an outer side formed in a tapered shape. The cylindrical tapered sleeve cut in the axial direction, and a taper hole corresponding to the outer shape of the tapered sleeve is formed on the inside, characterized in that consisting of a locking piston that slides in the axial direction.

Inside the outer cylinder portion, a bearing for supporting one end of the rotating portion is characterized in that it is further provided.

A ring-shaped groove is formed in the tapered sleeve along a circumference of the tapered sleeve so that the tapered sleeve easily adheres to the outer surface of the rotating part.

Between the tapered sleeve and the tapered surface in contact with the locking piston, a plurality of balls are provided to reduce the friction when the locking piston slides along the inclined surface of the tapered sleeve.

One side of the locking piston, characterized in that the return means for forcing the locking piston apart from the tapered sleeve is further provided.

The index drive device according to the present invention has the following effects.

In the present invention, the inner side is interviewed with the outer surface of the rotating part, the outer side is formed in a tapered shape, one side is a cylindrical tapered sleeve cut in the axial direction, and a taper hole corresponding to the outer shape of the tapered sleeve is formed inside, A fixing portion made of a locking piston that slides in the axial direction is provided.

The fixing portion, the inner surface of the tapered sleeve of the fixing portion is in contact with the outer surface of the fixing portion to hold the rotating portion so that the fixing portion is fixed at the angle of rotation of the rotating portion.

Therefore, the fixed portion does not affect the rotation angle of the rotating portion, the rotation angle can be finely adjusted, there is an effect that can be processed precisely of the workpiece.

A ring-shaped groove is formed along the circumference of the tapered sleeve so that the tapered sleeve is easily in close contact with the outer surface of the rotating part. In addition, between the tapered sleeve of the fixing portion and the tapered surface in contact with the locking piston, a plurality of balls are provided to reduce friction when the locking piston slides along the inclined surface of the tapered sleeve.

Therefore, when the locking piston of the fixed portion slides along the inclination of the tapered sleeve, the locking piston is easily moved toward the taper sleeve by the ball.

In addition, the inner surface of the tapered sleeve is easily in close contact with the outer surface of the rotating portion by the incision and the inner groove of one side of the tapered sleeve, so that the contact force of the fixing portion in contact with the rotating portion is excellent, and the rotating portion is firmly fixed. have.

1 is a cross-sectional view showing an embodiment of an index drive device according to the present invention.
2 is a view showing an embodiment of a fixing part of the index drive device according to the present invention.
3 is a cross-sectional view showing another embodiment of the index drive device according to the present invention.
Figure 4 is a cross-sectional view showing another embodiment of the index drive device according to the present invention.

Hereinafter, a preferred embodiment of an index drive device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing an embodiment of an index drive device according to the present invention, Figure 2 is a view showing an embodiment of a fixing part of the index drive device according to the present invention, Figure 3 is an index drive according to the present invention 4 is a cross-sectional view showing another embodiment of the device, Figure 4 is a cross-sectional view showing another embodiment of the index drive device according to the present invention.

As shown in Figure 1, the index drive device according to the present invention, the outer cylinder portion constituting the outer appearance, the rotating portion 200 is provided on the inner side of the outer cylinder portion 100, and the rotating portion 200 to selectively It consists of a fixing part 300 to be fixed by.

The outer cylinder portion 100 is formed by forming a cylindrical space therein. Inside the outer cylinder portion 100 is provided with a rotating portion 200, a fixing portion 300 to be described below, and serves to support and protect the components provided therein.

The inner space of the outer cylinder portion 100 is provided with a rotating portion 200. The rotating part 200 is formed in a cylindrical shape, the worm wheel 220 is fixed to the outer circumference. The rotating part 200 is integrally coupled with the worm wheel 220 and rotated by a worm wheel 220 that receives power from the motor M and rotates.

More specifically, as shown in Figure 1, the rotating part 200, the worm wheel 220 is integrally coupled to the outer periphery, the worm wheel 220 is meshed with the worm shaft, the worm shaft is a reduced spur gear And the spur gear are connected to the motor (M).

Accordingly, the power of the motor M is sequentially transmitted to the spur gear, the worm shaft, and the worm wheel 220, and the rotation part 200 integrally coupled to the worm wheel 220 rotates while the worm wheel 220 rotates. do.

The rotating part 200 serves to hold the position for processing the workpiece. That is, it rotates the workpiece to hold the position for machining.

In addition, a fixing part 300 is provided at one end of the rotating part 200. The fixing part 300, the inner side of the tapered sleeve 310 and the outer surface of the rotating portion 200, the tapered sleeve 310 tightens the tapered sleeve 310 so that the tapered sleeve 310 is in close contact with the rotating portion 200 Is made of a locking piston 320 or the like. The fixing part 300 serves to selectively fix the rotating part 200 so as not to rotate.

The tapered sleeve 310 is formed in a cylindrical shape in which the outer side is tapered and one side is cut in the axial direction. More specifically, as shown in FIG. 2, the tapered sleeve 310 has a tapered shape on one side of the tapered sleeve, one side of which is formed in a cylindrical shape partially cut in the axial direction, and the other end extends in a radial manner. The jaw 312 is formed.

In addition, an inner side of the tapered sleeve 310 is formed to correspond to the outer shape of the rotating part 200. That is, a cylindrical through hole corresponding to the cylindrical shape of the rotating part 200 is formed.

An inner surface of the tapered sleeve 310 is in contact with an outer surface of the rotating part 200. The inner surface of the tapered sleeve 310 is in close contact with the outer surface of the rotating part 200 by the locking piston 320.

A ring-shaped groove 314 is formed along the circumference of the tapered sleeve 310 inside the tapered sleeve 310. The groove 314 allows the tapered sleeve 310 to be in close contact with the outer surface of the rotating part 200. That is, the thickness of the tapered sleeve 310 is reduced by the groove 314 so that the inner surface of the tapered sleeve 310 is easily in close contact with the outer surface of the rotating part 200.

The locking piston 320 has a tapered hole 322 corresponding to the outer shape of the tapered sleeve 310 is formed inside. More specifically, as shown in FIG. 2, the locking piston 320 has a tapered hole 322 corresponding to the outer shape of the tapered sleeve 310 formed therein, and an outer middle portion thereof extends radially to protrude. The jaw 322 is formed.

The locking piston 320 slides toward the tapered sleeve 310 to tighten the tapered sleeve 310 to closely contact the outer side of the rotating part 200. The locking piston 320 is preferably moved to the tapered sleeve 310 side by hydraulic pressure.

One side of the locking piston 320, the return means 324 is further provided. In more detail, the return means 324 is provided on one side of the protruding jaw 322 of the locking piston 320 is preferably formed of an elastic spring. The return means 324 serves to force the locking piston 320 to be spaced apart from the tapered sleeve 310.

A plurality of balls 330 are provided between the tapered sleeve 310 and the inclined surface that the locking piston 320 is in contact with. The ball 330 reduces friction when the locking piston 320 slides along the inclined surface of the tapered sleeve 310, thereby preventing wear of the locking piston 320 and the tapered sleeve 310. Do it. In addition, the locking piston 320 adds cloudiness to the maximum movement to the tapered sleeve 310 side.

In addition, one end of the rotating part 200 is provided with a bearing 400. That is, as shown in FIG. 1, the bearing 400 is provided inside the outer cylinder part 100 and supports one end of the rotating part 200. The bearing 400 adds a rolling property to the rotation of the rotating part 200, and reduces the vibration by supporting one end of the rotating part 200.

On the other hand, one side of the rotating part 200, a table 500 or a tilting shaft 600 may be provided.

First, as shown in FIG. 1, a table 500 and a jig 510 for fixing a workpiece may be provided at one side of the rotating part 200. The table is formed in a plate shape, jig is provided on one side of the table 500, the workpiece to be processed is fixed. The table 500 is integrally coupled with the rotary part 200 and rotated by the rotation of the rotary part 200.

Alternatively, as shown in FIG. 3, one side of the rotating part 200 may be provided with a tilting shaft 600 for extending and transmitting the rotating force of the rotating part 200. As shown in FIG. 2, the tilting shaft 600 is inserted into the central axis of the rotating part 200 and is formed to extend to the outside.

As shown in FIG. 4, another index drive device may be connected to one side of the tilting shaft 600. The tilting shaft 600 serves to rotate another index drive device connected to the tilting shaft 600.

Hereinafter, the operation of the index drive device according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

As shown in FIG. 4, a tilting shaft 600 is coupled to one side of the rotating part 200 of the index drive device of the present invention to extend and transmit the rotating force of the rotating part 200. Then, one side of the rotating part 200 of the other index drive device, the table 500 and the jig 510 for rotating the workpiece is coupled.

Hereinafter, the index drive device combined with the tilting shaft 600 will be referred to as a 'tilting index 1000', and the index drive device combined with the table 500 and the jig 510 will be referred to as a 'table index 2000'. This will be described.

The tilting indexes 1000 are provided in pairs symmetrically on both sides. That is, as shown in FIG. 4, the tilting shaft 600 faces each other, and is spaced apart from each other.

A plurality of table indexes 2000 are connected between the tilting indexes 1000. That is, one end of the table index 2000 is coupled to the tilting axis 600 of the tilting index 1000.

The plurality of table indexes 2000 connected to each other are connected to one motor M. FIG. That is, as shown in Figure 4, one motor (M) is connected to one side, the connecting gear 720 is provided between the worm shaft 710 of the adjacent table index 2000.

Therefore, when the motor (M) is operated, power is transmitted to the adjacent index drive through the connecting gear 720, the rotating portion 200 of all connected index drive is rotated.

The workpiece is fixed with the jig 510 on the table 500 of the table index 2000. The jig 510 is preferably operated hydraulically. That is, after the workpiece is placed on the table 500, the hydraulic pressure is operated to fix the jig 510 so that the workpiece does not flow.

When the motor M of the table index 2000 is operated, power is sequentially transmitted to the reduced spur gear 730, the worm shaft 710, and the worm wheel 220 engaged with the motor M, so that the worm wheel 220 is rotated.

When the worm wheel 220 rotates, the rotating part 200 fixedly coupled to the worm wheel 220 rotates, and the table 500 fixedly coupled to the rotating part 200 rotates to a position where the workpiece is to be processed. At this time, both the table 500 and the workpiece of the table index 2000 interlocked through the coupling gear 720 are rotated to the same position. That is, as shown in Figure 4, the table 500 is horizontally horizontally rotated in the direction A-A '.

Then, hydraulic pressure is applied to the fixing part 300 of the table index 2000 so that the fixing part 300 fixes the rotating part 200. As the fixing part 300 fixes the rotating part 200, the workpiece is processed in a fixed state.

When hydraulic pressure is applied to the fixed part 300, the locking piston 320 of the fixed part 300 moves to the tapered sleeve 310, and tightens the tapered sleeve 310 so that the tapered sleeve 310 is closed. To be in close contact with the outer surface of the rotating part 200. Hydraulic pressure is applied on the opposite side of the tapered sleeve 310.

When the locking piston 320 moves toward the tapered sleeve 310, the inclined surface of the locking piston 320 pushes the outer inclined surface of the tapered sleeve 310, and the tapered sleeve 310 moves on the rotating part 200. It is in close contact with the outside.

In this case, the ball 330 between the tapered sleeve 310 and the tapered surface in which the locking piston 320 is in contact with the locking piston 320 adds cloudiness to the locking piston 320 so that the locking piston 320 is tapered sleeve 310. Help to move easily to the side.

When the locking piston 320 is completely moved until the locking jaw 312 of the tapered sleeve 310 can no longer move, the tapered sleeve 310 is bent by the inner groove 314. , The gap between the incision becomes narrow and close to the rotating part 200.

Therefore, the rotation of the rotating unit 200 can be strongly fixed, and the workpiece is prevented from the occurrence of defects due to the rolling phenomenon or flow due to the processing load and accurate and fine machining is possible.

While the workpiece is being processed, hydraulic pressure is continuously applied to the locking piston 320. When the workpiece is to be rotated to machine another part of the workpiece, the hydraulic pressure is removed.

When the hydraulic pressure applied to the locking piston 320 is removed, the locking piston 320 is spaced apart from the tapered sleeve 310 by a return means 324 provided on one side of the locking piston 320, and a rotating part The fixing of 200 is to be released.

Then, the workpiece may be rotated in various directions through the tilting index 1000.

When the motor M of the tilting index 1000 is operated, power is sequentially transmitted to the reduced spur gear 730, the worm shaft 710, and the worm wheel 220 engaged with the motor M, so that the worm wheel 220 is rotated.

When the worm wheel 220 rotates, the rotating part 200 fixedly coupled to the worm wheel 220 rotates, and the table index 2000 fixedly coupled to the rotating part 200 rotates to a position where the workpiece is to be processed. . That is, as shown in FIG. 4, the table index 2000 is vertically rotated in the direction B-B '.

Therefore, the workpiece can be rotated and processed at various axes and angles, so that the machining can be completed at once without removing the workpiece.

The tilting index 1000 is provided in pairs on both sides. This is to prevent vibration by balancing both sides when the table index 2000 is rotated and the workpiece is fixed.

In addition, the motor M is provided in only one tilting index 1000 of the pair of tilting indexes 1000. This is because, when the tilting index 1000 on which the motor M is mounted rotates, the rotational force is transmitted to the other tilting index 1000 through the plurality of table indexes 2000.

Then, hydraulic pressure is applied to the fixing part 300 of the tilting index 1000 so that the fixing part 300 fixes the rotating part 200. The configuration and operation of the fixing part 300 of the tilting index 1000 are the same as the fixing part 300 of the table index 2000.

On the other hand, the fixing part 300, in order to maintain the hydraulic pressure on the locking piston 320, a plurality of sealing members 750 for preventing leakage is provided.

The index drive device according to the present invention is fixed in such a manner that the fixing part interviews the rotating part, so that the fine angle can be adjusted regardless of the angle of rotation during the machining of the workpiece, and the rotating part 200 can be firmly fixed.

The rights of the present invention are not limited to the embodiments described above, but are defined by what is stated in the claims, and those skilled in the art can make various modifications and adaptations within the scope of the rights described in the claims. It is self-evident.

100: outer cylinder 200: rotating part
220: worm wheel 300: fixed part
310: tapered sleeve 312: locking jaw
314: groove 320: locking piston
322: protruding jaw 324: return means
330: ball 400: bearing
500: table 510: jig
600: tilting shaft 710: warm shaft
720: Connection Gear 730: Spur Gear
M: Motor 1000: Tilting Index
2000: table index

Claims (2)

An outer cylinder portion 100 having a cylindrical space formed therein;
A cylindrical rotating part 200 provided inside the outer cylinder part 100 and having a worm wheel 220 that receives power from the motor M, the outer circumferential part 100 being fixed to an outer circumference thereof;
It is provided at one end of the rotating part 200, and is in close contact with one surface of the rotating part 200 to fix the rotating part 200 so as not to rotate, or is spaced apart from one surface of the rotating part 200 is fixed to the rotating part 200 It includes a fixing portion 300 for releasing;
The fixing part 300,
A cylindrical tapered sleeve 310 of which an inner side is interviewed with an outer surface of the rotating part 200 and an outer side is formed in a tapered shape, and one side is cut in an axial direction;
A taper hole corresponding to an outer shape of the tapered sleeve 310 is formed inside, and includes a locking piston 320 that tightens the tapered sleeve 310 while sliding in an axial direction;
Inside the outer cylinder portion 100, a bearing 400 for supporting one end of the rotating part 200 is further provided;
Between the tapered sleeve 310 and the tapered surface where the locking piston 320 is in contact, a plurality of balls 330 to reduce friction when the locking piston 320 slides along the inclined surface of the tapered sleeve 310 Is provided;
On one side of the locking piston (320), there is provided a return means (324) for forcing the locking piston (320) to be spaced apart from the tapered sleeve (310);
A ring-shaped groove is formed along the circumference of the tapered sleeve 310 so that one end of the tapered sleeve 310 is easily bent inward and closely adhered to the outer surface of the rotating part 200 inside the tapered sleeve 310. 314 is formed. delete

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