KR101221401B1 - Turn table for machine tool - Google Patents

Abstract

The precision turntable for machine tools according to the present invention is a precision turntable for machine tools comprising rotating the table while adjusting the inclination angle of the table on which the workpiece is fixed, and having a large diameter by means of an angle adjusting motor provided inside the housing. A first shaft is rotated, and a manifold insertion portion is formed on one side of the first shaft so that a first manifold fixedly disposed inside the housing is disposed on a second axis having a small diameter, and the manifold insertion of the first shaft is performed. The second shaft is inserted into the unit and one end of the second shaft is fixedly coupled to the first shaft, and a tilting body is installed at the other end of the first shaft, and the air pressure passes through the air clamp plate installed in the housing. An air clamp for fixing the shaft is installed at the center of the second shaft, and an angle encoder for detecting the angle of the second shaft Table driving shaft is installed at one end, the table driving shaft is rotated by the table driving motor installed inside the tilting body, the table fixing the workpiece is installed on the upper end of the table driving shaft, and the table driving shaft encoder is installed on the lower table driving shaft And a second manifold disposed at the center of the table driving shaft is provided below the table driving motor.
Furthermore, the present invention forms a cooling water passage on the outer circumferential surface of the case of the angle adjusting motor and the case of the table driving motor, respectively, to cool the angle adjusting motor and the table driving motor with cooling water, and a plurality of first manifolds formed in the first manifold. An air passage communicates with a plurality of second air passages formed in the second shaft and a plurality of third air passages formed in the first shaft, and the third air passages of the first shaft are formed in the tilting body. A plurality of fifth air passages formed in the fourth air passage and the second manifold, and the fifth air passages of the second manifold are formed in the table driving shaft and the sixth air passages formed in the table driving shaft. It is connected to the seventh air passage of the high-pressure air introduced into the first air passage includes the discharge through the upper portion of the table, the electric power to apply the electric power to the table driving motor Passing through the second axis and the respective hollow part formed with the wire hole formed in the swivel body to the first axis and includes being connected to the table drive motor.
Therefore, in the present invention, since the table for installing the workpiece is installed on one side of the angle adjusting shaft, the space utilization can be easily improved by reducing unnecessary space, and the workpiece is cooled during the machining process while cooling the angle adjusting motor and the table driving motor. In addition, since the tilting angle of the table is accurately recognized and the angle adjusting shaft is stopped quickly, the life of the angle adjusting motor and the table driving motor included in the turntable of the present invention can be improved, thereby easily extending the life of the entire turntable. The worktable installed on the table can be accurately cooled and washed with high pressure air during processing, so that the degree of processing can be easily improved. Can be equipped on its own to complete machining of workpiece The effect is that the facility can be simplified.

Description

Precision turntable for machine tools {TURN TABLE FOR MACHINE TOOL}

The present invention relates to a precision turntable for a machine tool, and more particularly, to reduce the unnecessary space, to easily improve space utilization, to improve the life of the turntable and to improve the degree of machining of the workpiece easily Relates to a precision turntable.

In general, a machine tool is a machine that uses a tool to cut, cut, drill holes, cut a thread, or grind a metal. For example, a machine tool for rotating workpieces may be subjected to complex machining such as turning and milling. in need.

In the related art, there is an index table in a machine tool for which a rotating workpiece is to be processed, and this index table has been developed by the applicant of the patent application No. 10-2008-114372.

The prior art as described above is an index table body having a first support and a second support on both sides; A rotation body having both body rotation shafts arranged on the first support and the second support of the index table body to rotate; In constructing an index table with a rotating table in which a lower table rotating shaft is formed and rotated to the center of the rotating body, the index table body sequentially installs a DD motor and a brake device in the first support, thereby rotating the rotating body. The body rotation shaft of the side of the DD motor and the brake device to be installed in the center, and at the same time inserting the bearing into the second support body of the index table body to build the other body rotation axis of the rotating body to the rotating body of the index table body The rotating body is rotated between the first support and the second support, and the rotating body sequentially installs the DD motor and the brake device under the center thereof so that the table rotating shaft of the rotary table is constructed in the center of the DD motor and the brake device. The table is rotated in the circumferential direction.

This prior art is to drive the rotary table directly by a motor to simplify the structure and to smoothly drive the rotary table.

However, in the above-described conventional index table, a body rotating shaft for adjusting the angle of the rotating body is installed on both sides of the rotating body so that unnecessary space is formed, and there is no configuration to cool the motor. The disadvantage is that a failure may occur.

Moreover, when the workpiece is precisely worked, there is a disadvantage that it is difficult to precisely work the workpiece because there is no means for easily removing fine-sized foreign matters on the workpiece during the work.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention by reducing the unnecessary space by installing a table for installing the workpiece on one side of the angle adjustment shaft, and easily improve the space utilization, the angle Precise turntable for machine tools that cools the adjusting motor and table drive motor while cooling the workpiece in the process and removing fine foreign matter from the workpiece, improving the life of the turntable and improving the accuracy of the workpiece. To provide.

In order to achieve the above object, the present invention, in the turntable for a machine tool consisting of rotating the table while adjusting the inclination angle of the table to which the workpiece is fixed, a large diameter by an angle adjustment motor installed inside the housing The first axis of the manifold is rotated, and the manifold insertion portion is formed on one side of the first axis, the first manifold fixedly disposed inside the housing is disposed on the second axis of the small diameter while the manifold of the first axis In addition to being inserted into the insertion portion, one end of the second shaft is fixedly coupled to the first shaft, and a tilting body is installed at the other end of the first shaft, and the air is passed through the air clamp plate installed in the housing. An air clamp for fixing two axes is installed at the center of the second axis, and an angle encoder for detecting the angle of the second axis is different from the second axis. The table drive shaft is installed at one end, the table drive shaft is rotated by a table drive motor installed inside the tilting body, the table fixing the workpiece is installed on the upper end of the table drive shaft and the table drive shaft encoder for detecting the rotation angle of the table drive shaft The table driving shaft is provided at the lower end, and the second manifold disposed in the center portion of the table driving shaft is provided with a precision turntable for machine tools consisting of being installed below the table driving motor.

Furthermore, the present invention forms a cooling water passage on the outer circumferential surface of the case of the angle adjusting motor and the case of the table driving motor, respectively, to cool the angle adjusting motor and the table driving motor with the cooling water. An air passage communicates with a plurality of second air passages formed in the second shaft and a plurality of third air passages formed in the first shaft, and the third air passages of the first shaft are formed in the tilting body. A plurality of fifth air passages formed in the fourth air passage and the second manifold, and the fifth air passages of the second manifold are formed in the table driving shaft and the sixth air passages formed in the table driving shaft. And a high pressure air communicated with the seventh air passage of the first air passage and discharged through the upper portion of the table.

In another aspect, the present invention includes a wire for applying electricity to the table driving motor is connected to the table driving motor through the hollow portion formed in the second shaft and the first shaft and the wire hole formed in the tilting body.

In the precision turntable for machine tools according to the present invention, the table for installing the work is provided on one side of the angle adjusting shaft, so that unnecessary space can be reduced and space utilization can be easily improved.

In addition, since the workpiece is cooled and washed with air during machining while cooling the angle adjusting motor and the table driving motor, the lifespan of the angle adjusting motor and the table driving motor included in the turntable of the present invention can be improved, thereby improving the life of the entire turntable. Easily extended, the workpiece installed on the table can be accurately cooled and washed with high pressure air during processing, so that the workpiece can be easily improved, and the high pressure air means for cooling and washing the workpiece is the turntable itself of the present invention. There is an advantage that can be provided to simplify the entire equipment for processing the workpiece.

1 is a plan view of a precision turntable for a machine tool according to the present invention for explaining the air passage.
FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG. 1.
3 is a cross-sectional view taken along the line BB of FIG. 2.
Figure 4 is a plan view of a precision turntable for machine tools according to the present invention for explaining the cooling water passage.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 to 3 is a view showing a precision turntable for a machine tool according to the present invention, the workpiece is fixed by a jig (not shown) provided in the table 1, the inclination angle of the table (1) To adjust and rotate the table (1).

That is, in the precision turntable for machine tools according to the present invention, the first shaft 4 of the large diameter is rotated by the angle adjusting motor 3 in which the housing 2 is installed, and one side of the first shaft 4 is rotated. A first manifold 5 having a manifold insertion portion 4a formed therein and fixedly disposed inside the housing 2 is disposed on the second axis 6 having a small diameter. It is inserted into the manifold insertion portion 4a of one side, and one end of the second shaft 6 is fixedly coupled to the first shaft 4.

And a tilting body (7) is installed at the other end of the first shaft (4), the air clamp for fixing the second shaft (6) by the air pressure passing through the air clamp plate (8) installed in the housing (9) is provided at the center of the second shaft (6), the angle encoder 10 for detecting the angle of the second shaft (6) is provided at the other end of the second shaft (6).

The table driving shaft 12 is rotated by the table driving motor 11 installed inside the tilting body 7, and the table 1 for fixing the work is installed at the upper end of the table driving shaft 12, and the table driving shaft The encoder 13 is provided with the table driving shaft 12 at the lower end, and the second manifold 14 disposed at the center of the table driving shaft 12 is installed under the table driving motor 11.

In particular, the present invention, as shown in Figures 2 and 3, the cooling water passage (3b, 3b) on the outer peripheral surface of the case (3a) of the angle adjusting motor (3) and the case (11a) of the table driving motor 11 11b) are respectively formed so that the coolant flows to the circumferential surfaces of the cases 3a and 11a to cool the angle adjusting motor 3 and the table driving motor 11.

A plurality of first air passages 5a formed in the first manifold 5 are provided to clean and remove fine foreign matter from the workpiece during processing while cooling the workpiece installed on the table 1 with high pressure air. A plurality of second air passages 6a formed in the two shafts 6 and a plurality of third air passages 4b formed in the first shaft 4, and communicating with each other in the first shaft 4; The third air passage 4b communicates with the plurality of fourth air passages 7a formed in the tilting body 7 and the plurality of fifth air passages 14a formed in the second manifold 14.

The fifth air passage 14a of the second manifold 14 includes a plurality of sixth air passages 12a formed in the table driving shaft 12 and a plurality of seventh air cylinders formed in the table 1. It communicates with the furnace 1a.

Although not shown, it is obvious that a hose and a nozzle for injecting the high pressure air discharged from the seventh air passage 1a to the workpiece are connected to the seventh air passage 1a.

Then, the high pressure air introduced from the first air passage 5a is the second air passage 6a → the third air passage 4b → the fourth air passage 7a → the fifth air passage 14a → the sixth air passage. The air is discharged through the upper portion of the table 1 via the furnace 12a to the seventh air passage 1a.

In the present invention, in order to organize the wires connected to the table drive motor 11 in the lower portion of the tilting body (7), the wire 20 for applying electricity to the table drive motor 11 is the second shaft (6) And a hollow portion 6b and 4c formed on the first shaft 4 and a wire hole 7b formed in the tilting body 7 to be connected to the table driving motor 11.

Meanwhile, in the present invention, in order to smoothly supply and discharge the cooling water for cooling the table driving motor 11 rotated together with the tilting body 7, the first manifold 5 is formed as shown in FIG. 4. Two first cooling water passages 5b are formed in the first manifold 5 at positions not interfering with the plurality of first air passages 5a, and are formed in the second shaft 6, respectively. Two second cooling water passages 6b are formed in the second shaft 6 at positions not interfering with the two air passages 6a, and a plurality of third air passages formed in the first shaft 4 ( Two third cooling water passages 4c are formed at positions that do not interfere with 4b) so that the first, second, and third cooling water passages 5b, 6b, and 4c communicate with each other.

In addition, two fourth cooling water passages 7c are formed in the tilting body 7 at positions not interfering with the plurality of fourth air passages 7a formed in the tilting body 7. Each of the third cooling water passage (4c) is in communication with the cooling water passage (11b) formed on the circumferential surface of the case (11a) of the table driving motor 11, the cooling water introduced from the first manifold (5) On the circumferential surface of the case 11a of the table driving motor 11 via the first cooling water passage 5b, the second cooling water passage 6b, the third cooling water passage 4c, and the fourth cooling water passage 7c. After the formed cooling water passage 11b is circulated, it is discharged through the first manifold 5 in the reverse order as described above.

That is, one of the two first cooling water passage 5b, the second cooling water passage 6b, the third cooling water passage 4c, and the fourth cooling water passage 7c is a table drive motor (1) in the first manifold (5). 11 is used as a path introduced around the case 11a of the case 11, and the other is apparently flowing to the first manifold 5 around the case 11a of the table driving motor 11.

Of course, reference numeral 21 is a cover installed in the housing 2 to cover the angle encoder 10, 22 is a cover installed in the tilting body 7 to cover the table drive shaft encoder 13, 23 is A cover covering a hose (not shown), a connector (not shown), and an electric wire 20 for connecting the fourth air passage 7a and the fifth air passage 14a. Description of the description is omitted.

In particular, when the high-pressure air is introduced into the air clamp 9, the inside of the air clamp 9 expands, and the hub portion of the air clamp is spaced apart from the second shaft 6 to release the second shaft 6. When the air pressure is removed, the hub portion of the air clamp is in close contact with the second shaft 6 to fix the second shaft 6, and a known technique has been developed.

The turntable for a machine tool according to the present invention thus formed acts as follows.

First, the workpiece (not shown) is fixed to the upper part of the table 1, and the air pressure is introduced into the air clamp 9 so that the first and second shafts 4 and 6 can rotate, and then the workpiece The angle adjusting motor 3 and the table driving motor 11 are operated in accordance with the machining position.

Then, the angle adjusting motor 3 and the table driving motor 11 are rotated according to a program set for machining the workpiece located on the upper part of the table 1 to determine the inclination angle and the rotation angle of the table 1. Accordingly, a work such as cutting a workpiece with a tool (not shown) is performed.

Of course, it is necessary to stop the angle adjustment motor 3 according to the inclination angle of the table 1 or in order to maintain the current posture of the table 1 due to a sudden power failure, when the air injected into the air clamp 9 is discharged, The first and second shafts 4 and 6 are fixed by the clamp 9 to fix the posture of the table 1.

On the other hand, the coolant flows through the coolant passages 3b and 11b formed on the outer periphery of the case 3a of the angle adjusting motor 3 and the case 11a of the table driving motor 11. And the table driving motor 11 are cooled.

Of course, in the present invention, the cooling water is introduced through the first manifold (5), the first cooling water passage (5b) → the second cooling water passage (6b) → the third cooling water passage (4c) → the fourth cooling water passage (7c) After passing through the cooling water passage 11b formed on the circumferential surface of the case 11a of the table driving motor 11, it is discharged through the first manifold 5 in the reverse order as described above.

Furthermore, the high pressure air introduced into the first air passage 5a is the second air passage 6a → the third air passage 4b → the fourth air passage 7a → the fifth air passage 14a → the sixth air passage. (12a) → the workpiece is discharged through the upper portion of the table (1) via the seventh air passage (1a) in turn, and installed on the upper portion of the table (1) through a hose (not shown) and a nozzle (not shown) Can be easily cooled, or even fine particles can be cleaned and separated.

1: table 2: housing
3: angle adjusting motor 3a, 11a: case
3b, 11b: Cooling water passage 4,6: 1st, 2nd axis
4a: Manifold insertion part 5, 14: 1st, 2nd manifold
5a, 6a, 4b, 7a, 14a, 12a, 1a: first, second, third, fourth, fifth, sixth, seventh air passage
5b, 6b, 4c, 7c: 1st, 2nd, 3rd, 4th cooling water passage
7: tilting body 7b: wire hole
8: air clamp plate 9: air clamp
10: angle encoder 11: table drive motor
12: table drive shaft 13: table drive shaft encoder
20: wire 21,22,23: cover

Claims (3)

In the precision turntable for machine tools, which comprises rotating the table while adjusting the inclination angle of the table to which the work is fixed,
The first axis of large diameter is rotated by the angle adjusting motor installed inside the housing,
The manifold insertion portion is formed on one side of the first shaft, and the first manifold fixedly disposed inside the housing is inserted into the manifold insertion portion of the first shaft while being disposed on the second axis of the small diameter. One end of the two axes is fixedly coupled to the first axis,
The tilting body is installed at the other end of the first shaft,
An air clamp for fixing the second shaft by the air pressure passing through the air clamp plate installed in the housing is provided in the center of the second shaft,
An angle encoder for detecting the angle of the second axis is installed at the other end of the second axis,
The table driving shaft is rotated by a table driving motor installed inside the tilting body,
A table for fixing the workpiece is installed at the upper end of the table drive shaft, and a table drive shaft encoder is installed at the lower end of the table drive shaft,
A second manifold disposed at the center of the table driving shaft is installed below the table driving motor,
Cooling water passages are formed on the outer circumferential surface of the case of the angle adjusting motor and the case of the table driving motor to cool the angle adjusting motor and the table driving motor with coolant,
A plurality of first air passages formed in the first manifold communicate with a plurality of second air passages formed inside the second shaft and a plurality of third air passages formed inside the first shaft,
The third air passage of the first shaft is in communication with the plurality of fourth air passage formed in the tilting body and the plurality of fifth air passages formed in the second manifold,
The fifth air passage of the second manifold communicates with the plurality of sixth air passages formed inside the table driving shaft and the plurality of seventh air passages formed on the table, and the high-pressure air introduced into the table is introduced into the table. Precision turntable for machine tool which is discharged through the upper portion of the. delete The method of claim 1,
Precision turntable for machine tool comprising a wire for applying electricity to the table driving motor is connected to the table driving motor through the hollow portion formed in the second shaft and the first shaft and the wire hole formed in the tilting body, respectively .

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