KR20140141893A

KR20140141893A - Index table and a powerful high-speed Wedge clamp device

Info

Publication number: KR20140141893A
Application number: KR20130063202A
Authority: KR
Inventors: 박동수
Original assignee: 박동수
Priority date: 2013-06-03
Filing date: 2013-06-03
Publication date: 2014-12-11
Also published as: TW201446399A; KR101522456B1

Abstract

The present invention greatly improves an automatic clamp (= brake) device as a key element of rotation control among the functions of an index table capable of high-speed and ultra-precise driving, thereby enabling more powerful and precise rapid braking and minimizing malfunction and malfunction, And a new clamp device that can contribute to safety and reliability as well as excellent functionality.
That is, in the braking and releasing operation of the clamping device installed in the high-speed index table, the clamping force is increased more strongly as it is pushed by a straight line (forward movement) Type automatic brake device 300 that is greatly advantageous for ensuring reliability of the brake pedal 320. This is because when the constant oil pressure or pneumatic pressure is input to one side of the rotating shaft 102 provided below the rotation driving portion The brake pads 310 can be rapidly braked effectively by the strong clamping action of the pressurizing type presser holder and the pressurization is automatically released when the brake operation is finished.

Description

[0001] The present invention relates to an index table and a high-speed wedge clamp device,

The present invention greatly improves an automatic clamp (= brake) device as a key element of rotation control among the functions of an index table capable of high-speed and ultra-precise driving, thereby enabling more powerful and precise rapid braking and minimizing malfunction and malfunction, And a new clamp device that can contribute to safety and reliability as well as excellent functionality.

The general index table installed on various machine tools has been applied to the worm gear type rotary drive means in which the worm of SCM440 and the worm wheel of phosphor bronze material are interlocked with each other,

This is because there is an excessive backlash over the allowable range of abrasion between gears during the rotation drive, and there is a problem that the rotation accuracy is greatly reduced. In addition, not only high speed rotation is inhibited due to an excessive reduction ratio according to the characteristics of the worm gear, It is confirmed that there is a limit to the productivity improvement,

In recent years, gear type index tables equipped with gears, which are particularly advantageous for high-speed rotation as well as rotational drive precision, have attracted considerable attention.

Meanwhile, the index table is basically capable of not only work (machining) while rotating a heavy workpiece at a high speed, but also precise rotation and control such as precise multi-step step as well as sudden braking and acceleration of rotation, Operation is required, which is a very important factor because it directly influences the performance of the index table.

However, conventional automatic clamping devices (brakes) equipped on the index table have reached considerable levels of funding through considerable transition, but there is still a considerable lack of even more precise and reliable clamping action required by modern times It is true.

That is, since the past automatic clamping device (brake) is an operating system based on a simple pressing brake method, a pressurizing power source of a considerable size is required in a brake (clamping) operation which requires twice the working torque, The use of the brake has been rapidly decreasing since a considerable problem such as a brake reaction and a slow response speed has been confirmed due to frequent occurrence of slip phenomenon, which is an obstacle during braking.

To solve this problem, the applicant of the present application has constructed a brake pad between a lower portion of a lower portion of the index and a fixed support adjacent to the index, the one side being bolted to the lower portion and the other portion being adjacent to the fixed portion. When a predetermined oil pressure or air pressure is input between the piston operating groove and the brake pad, the brake pad is strongly contacted (brakes) while being pushed according to the pressing force, and when the pressing force is stopped A thrust generating interstice space is formed between the brake piston and the piston mounting block for generating a rapid braking thrust when hydraulic or pneumatic pressure for braking operation is input At the same time, A pad having a pressing force inducing groove and a pneumatic pressure hose coupling groove into which a constant hydraulic pressure or a pressurizing force of oil or air pressure for braking operation is input is provided in a lower portion of the space, Patent No. 10309 has been filed.

However, the pad-type automatic braking device applied to the index table of the above-mentioned prior art has a problem in that when the cylinder piston applies vertical pressure to the disk pad as described above and the surface contact (breaking action) Therefore, it is not enough to expect high braking function by perfect surface contact and friction force.

In the present invention, in the braking and releasing operation of the clamp device installed on the high-speed index table, the clamping is performed more strongly as it is pushed linearly (forward movement) Type clamping operation system, which is greatly advantageous for ensuring reliability, as well as providing additional high-efficiency sliding means for preventing the clamping of the clamp and the increase of the original activity and the driving precision thereof.

According to an aspect of the present invention, there is provided a gear device capable of performing durability, high rigidity, and high-speed split rotation between a lower portion of an index rotary table and a servo motor without any backlash or slim phenomenon during rotation And; When a predetermined oil pressure or air pressure is input between the rotary table lower spindle and the fixed support on one side thereof, the brake piston is finely moved up and down, and the brake pad is pressed or released to thereby realize the brake control A pressure type brake device is provided; A high-efficiency brake automatic releasing device that ensures that the output of the brake is maximized at the lower portion of the pad-type brake device and that there is no problem in the returning force required for brake release; .

The high-strength chain type clamping apparatus of the high-speed index table according to the present invention is characterized in that the breaking-type automatic braking apparatus (300) (Pushing forward), it becomes possible to perform high-precision and high-precision rotation control for sudden stop, rapid acceleration and multi-step high-speed rotation which are required during rotation operation, The bar is an invention for all things.

1 is a perspective view showing a preferred embodiment of the present invention;
Fig. 2 is a plan view of the present invention as viewed from the index plane
3 is an enlarged cross-sectional view of the index fracture section of the present invention
Fig. 4 is an exploded assembly example of the automatic brake apparatus of the present invention
Figure 5 is an exploded assembly example of the rolling means of the present invention
Fig. 6 is a partial sectional view of the broken-type automatic braking device of the present invention. Fig.
Fig. 7 is a partial enlarged view of a wedge type automatic braking device of the present invention

The high-strength chain type clamping apparatus of the high-speed index table according to the present invention will be described in more detail with reference to the accompanying drawings.

1, a rotary table 101 is provided on an upper side of the rotary table 101, and a rotary shaft 102 coupled to the rotary table 101 for simultaneous rotation is provided on a lower side of the rotary table 101, And a rotary drive servomotor (not shown) is provided on the outer side of the fixed support 100,

When the rotational power of the servo motor (not shown) is transmitted to the rotary table 101 between the axis of the servo motor for rotation drive (not shown) and the rotary shaft 102 below the rotary table 101, (Not shown) capable of achieving high durability and strength while at the same time providing low noise (quiet) and precise high-speed division operation,

When a predetermined oil pressure or pneumatic pressure is applied to one side of the rotary shaft 102 provided below the rotary drive unit (not shown), if the brake piston 320 performs a fine upward / downward motion, Type automatic brake device 300 in which the automatic braking device 310 can be rapidly braked effectively and the pressure is automatically released when the braking operation is completed.

The automatic brake releasing apparatus 140 may be installed at any one side of the automatic brake apparatus 300 so that the thrust of the brake is maximized and the return force required when the brake is released is not a problem at all.

Particularly, the wedge-shaped automatic braking device 300 includes the lower part of the rotating shaft 102 and the other part constitutes a brake pad 310 which is not in contact with the stationary body 100 but is very close to the stationary body 100;

A piston operating groove 331 is formed at a lower portion of the brake piston 310 which is spaced apart from the brake pad 310. The piston operating groove 331 is provided with a brake piston (320);

A guide block 340 for driving a worm wheel having an upper pressing output surface 341 inclined upward so that the output of the upward and downward motions can be transmitted in a direction perpendicular to the brake piston 320;

The wedge-driving guide block 340 has a lower pressing input surface 351 corresponding to the upper pressing output surface 341 and has a tapered wedge-shaped pressing portion 351 which is wider on one side and narrower on the other side Shaped pressurizing holder 350 having a plurality of press-fittings 352;

When the press-type pressure holder is operated on the upper and lower sides of the pressure-type presser holder 350, one of the presser-like holders is extended to both the upper and lower sides in accordance with the breaking action, The pad friction piece 360 and the fixed friction piece 370 are in close contact with the lower fixture 100, respectively.

At this time, friction surfaces 361 and 371 are formed on the outer sides of the pad friction piece 360 and the fixed friction piece 370, respectively, and on the opposite surface thereof, Photo engaging surfaces 362 and 372 are formed.

An automatic withdrawal spring 390 may be further coupled to the inner end of the pressure-type pusher holder 350 so that it can be easily released according to a predetermined tension when the brake is released.

In addition, the interlocking type pressing portion 352, which is tapered on the upper and lower sides of one side of the interlocking pressurizing holder 350, minimizes the frictional resistance due to the braking operation and its disengaging urging action, An additional enabling means 380 may be further configured,

This is because the inner tongue 381 having a predetermined depth is engraved in the tapered chelating pressurizing portion 352 and then one or more roller rods 383 having a predetermined diameter and length in the inner tongue 381, And one or more ball arrays 384 arranged in a predetermined length by balls 384b are inserted into the ball array 384a.

At this time, the roller bar 383 or the ball array 384 can be formed of a plurality of at least one each, as described above. If any one of the roller rods 383 or the ball array 384 has a diameter smaller than that of the others, It may be more advantageous for the efficiency of operation.

The rolling means which can be constituted as described above is characterized in that, between one of the tapered pressing portion and the pad friction piece tapered upward and downward to one side of the pressure-applied type pressing holder, or between the opposite side wedge-shaped pressing portion and the fixed friction piece,

As the rolling or rolling movement (minimization of the frictional resistance) is provided, the wedge-shaped pressure holder for braking operation can advance deeper than the same force, thus enabling a more robust braking operation.

Of course, it is a very useful invention that, when exiting for releasing the brake, an easy and simple operation is possible according to the advantage of the rolling or rolling motion of the rolling means.

Between the brake piston 320 and the lower fixture 100 (the member fixed to the body of the index table 100), a thrust force is generated to generate a rapid braking force when hydraulic pressure or pneumatic pressure for brake operation is input. A pressure force induction groove 135 and a pneumatic pressure hose coupling groove 136 for inputting a constant hydraulic pressure or pressurizing force of oil or air for braking operation are formed in the lower part of the thrust generating interstice space 132, .

The high-efficiency brake automatic canceling apparatus 140 is installed between the brake piston 320 and the fixture 100 to automatically return the brake piston 320 to the home position when the brake operation is released,

Since the bolt 141a is formed on one side and the coil spring 142 having a predetermined compressive force is fastened to the compression pin 141 on which the jaw coupling head 141b is formed,

When the braking force applied for releasing the brake operation is stopped after the brake piston 320 is attached to the upper brake pad 310 to realize the brake operation, the brake piston 320 is automatically returned to the home position Since the appropriate repulsive force is automatically given,

A quick accurate brake release operation (brake piston return to home position)) can be realized if a brake release signal is applied without significantly affecting the thrust during brake operation.

It is needless to say that sealing members 171 and 172 such as O-rings can be further inserted in the inside and outside of the brake piston 320 to prevent leakage of the pneumatic pressure.

3, which is not shown, is the body, and No. 500 in FIG.

100: Fixture 101: Rotating table
102: rotating shaft 103: servo motor
140: Brake automatic release device 141a: Bolt
141b: chin gripping head 141: compression pin
[0001] The present invention relates to a brake device, and more particularly, to a brake device for a vehicle, which comprises a brake spring, a brake spring, a piston, The present invention relates to a ball bearing and a ball bearing, and more particularly, to a ball bearing,

Claims

A rotary table 101 is provided on the upper side and a rotary shaft 102 is coupled to the rotary table 101 to be rotated at the same time and a fixing body 100 is installed on the outer side of the rotary shaft 102 A rotary drive servomotor (not shown) is provided on the outer side of the fixture 100,
When the rotational power of the servo motor (not shown) is transmitted to the rotary table 101 between the axis of the servo motor for rotation drive (not shown) and the rotary shaft 102 below the rotary table 101, (Not shown) capable of achieving high durability and strength while at the same time providing low noise (quiet) and precise high-speed division operation,

When a predetermined oil pressure or pneumatic pressure is applied to one side of the rotary shaft 102 provided below the rotary drive unit (not shown), if the brake piston 320 performs a fine upward / downward motion, Type automatic braking device (300) capable of rapidly braking the braking device (310) effectively and releasing the pressure automatically when the braking operation is completed.

The method according to claim 1,
The breakable type automatic brake device 350 is constituted by the lower portion of the rotating shaft 102 and the other side is constituted by the brake pad 310 which is not in contact with the stationary body 100 but is very close to the stationary body 100;
A piston operating groove 331 is formed at a lower portion of the brake piston 310 which is spaced apart from the brake pad 310. The piston operating groove 331 is provided with a brake piston (320);
A guide block 340 for driving the worm driving device is provided on the upper side of the brake piston 320 and has an upper pressing output surface 341 inclined upward so that the thrust of the upward and downward motions can be transmitted in a perpendicular direction;
The wedge-driving guide block 340 has a lower pressing input surface 351 corresponding to the upper pressing output surface 341 and has a tapered wedge-shaped pressing portion 351 which is wider on one side and narrower on the other side Shaped pressurizing holder 350 having a plurality of press-fittings 352;
When the press-type pressure holder is operated on the upper and lower sides of the pressure-type presser holder 350, one of the presser-like holders is extended to both the upper and lower sides in accordance with the breaking action, Wherein the pad friction piece (360) and the fixed friction piece (370) are closely attached to the lower fixture (100).

The method according to claim 2, wherein
The worm gear driving guide block (340) and the brake piston (320) may be separately assembled and then assembled, or may be integrally formed if necessary.

3. The method of claim 2,
Friction surfaces 361 and 371 are formed on the outer side of each of the pad friction piece 360 and the fixed friction piece 370 and on the opposite side of the pad friction piece 360 and the fixed friction piece 370 is formed a tapered pawl- And fastening surfaces (362) and (372) are formed on the fastening table (362).

3. The method of claim 2,
And an automatic withdrawal spring 390 may be further attached to the inner end of the pressure-based pressure holder 350 so as to be able to escape more easily according to a predetermined tension when the brake is released. High-strength chain clamping device of high-speed index table.

3. The method of claim 2,
In the pressurizing portion 352 having a tapered shape formed on the upper and lower sides of the one side of the pressure-applying type pressure holder 350,
Wherein a rolling means (380) capable of applying a pressing force to a more powerful frictional force can be additionally constructed by minimizing the frictional resistance due to the braking operation and its unscrewing operation. &Lt; Desc / Clms Page number 19 >

3. The method of claim 2,
The rolling means (380)
The inner tongue 381 having a predetermined depth is engraved on the tapered chelating press portion 352 and then one or more roller rods 383 having a predetermined diameter and a predetermined length are inserted into the inner tongue 381, 384a are arranged in a predetermined length by a ball 384b, and one or more selected ones of the ball arrays 384 are inserted.

3. The method of claim 2,
The roller bar 383 or the ball array 384 may have one or more of a plurality of roller rods 383 or a plurality of the ball arrays 384, Strong wedge type clamp device.

3. The method according to claim 1 or 2, wherein
The automatic brake releasing apparatus 140 may be provided at any one side of the automatic brake apparatus 300 so that the brake output is maximized while the return force required when the brake is released is not a problem at all High-strength chain clamping device of high-speed index table.

The method of claim 8, wherein
The automatic brake releasing device (140)
The brake piston 320 is installed between the brake piston 320 and the fixture 100 to automatically return to the home position when the brake operation is released,
And a coil spring 142 having a predetermined compression force is fastened to the compression pin 141 having the bolt 141a on one side and the tangling head 141b on the other side. Strong wedge type clamp device.