KR20240047078A - Rotary table device - Google Patents

Abstract

The invention for a rotary table device is disclosed. The disclosed rotary table device includes: a rotary table frame unit, a motor unit installed on the rotary table frame unit, generating power, connected to the motor unit, a deceleration unit that reduces the rotation speed of the motor unit, and connected to the deceleration unit. , a first gear unit that rotates by receiving a rotational force from the reduction unit, a second gear unit that is engaged and coupled with the first gear unit and rotates by receiving a rotational force from the first gear unit, and a rotating table frame unit. Possibly coupled, connected to the second gear unit, installed on the rotary table unit and the rotary table frame unit to be rotated by the rotational force of the second gear unit, and operated depending on whether the rotary table unit rotates to rotate the rotary table frame unit and the rotary table frame unit. It is characterized in that it includes a table part and a clamp unit part that is clamped or unclamped.

Description

Rotary table device {ROTARY TABLE DEVICE}

The present invention relates to a rotary table device, and more specifically, to a rotary table device in which positional accuracy and rotation speed are improved, hydraulic leakage is prevented, production efficiency is increased, and overall length is reduced. will be.

In general, the table device is an important device that determines the processing precision of the workpiece in a machine tool, and is rotated so that the workpiece can be positioned at a set angle while it is placed.

The table device operates by receiving hydraulic pressure from a hydraulic unit, moves up and down, and includes a rotating or non-rotating shaft and a table connected to the shaft. At this time, the table is moved up and down by the operation of the axis and rotated or non-rotated.

The conventional table device receives hydraulic pressure from a hydraulic unit and moves in the vertical direction, and has a rotating or non-rotating structure, so not only does it generate noise, but there is a problem in that a deviation in positioning occurs when rotating at a set angle. In addition, there are problems in that the work time takes a long time, and if a hydraulic leak occurs, it can have a serious impact on environmental pollution. Therefore, there is a need to improve this.

The background technology for the present invention is disclosed in Republic of Korea Patent Publication No. 10-2022-0121305 (Title of the invention: Machine tool rotary table device, Publication date: 2022.09.01.).

The present invention was created in response to the above-mentioned need, and provides a rotary table device that improves positional accuracy and rotation speed, prevents hydraulic leakage, increases production efficiency, and reduces overall length. It has a purpose.

In order to achieve the above object, the rotary table device of the present invention includes: a rotary table frame unit; A motor unit installed on the rotary table frame and generating power; A deceleration unit connected to the motor unit and reducing the rotation speed of the motor unit; a first gear unit connected to the reduction unit and rotated by receiving rotational force from the reduction unit; a second gear unit engaged and coupled with the first gear unit and rotated by receiving a rotational force from the first gear unit; a rotary table unit rotatably coupled to the rotary table frame unit, connected to the second gear unit, and rotated by a rotational force of the second gear unit; and a clamp unit unit installed on the rotary table frame unit and operated depending on whether the rotary table unit rotates to clamp or unclamp the rotary table frame unit and the rotary table unit.

In addition, a position fixing unit part is installed on the rotary table frame part to be movable toward the rotary table part, and is coupled to the rotary table part to fix the rotary table part in the set position.

In addition, the clamp unit unit may include a clamp unit that is movably installed on the rotary table frame unit and moves toward the rotary table unit to clamp or unclamp the rotary table frame unit and the rotary table unit; and a clamp operating unit installed on the rotary table frame, having a variable length, and extending the length to pressurize the clamp unit and move the clamp unit toward the rotary table unit.

In addition, the rotary table frame unit includes: a rotary table frame on which the clamp unit is movably installed, the rotary table unit is rotatably coupled, and the position fixing unit unit is mounted; and a first curvature coupling connected to the rotary table frame and clamped or unclamped with the clamp portion.

In addition, the rotary table unit includes a rotating cylinder connected to the second gear unit and rotated by the rotational force of the second gear unit; a bearing portion connected to the rotary table frame and the rotary cylinder and supporting rotation of the rotary cylinder; a rotary table connected to the rotary cylinder and rotated together with the rotary cylinder; a second cubic coupling connected to the rotary table, disposed to face the first cubic coupling, and clamped or unclamped with the clamp unit portion; And a position fixing block connected to the rotating cylinder and coupled to the position fixing unit part.

In addition, a plurality of the position fixing blocks are arranged to be spaced apart from each other at the same rotation angle at the center of the rotating cylinder, and the position fixing unit unit is coupled to any one of the plurality of position fixing blocks.

In addition, the position fixing unit unit includes a position fixing unit coupled to the position fixing block; A position fixing operation that is connected to the position fixing part, rotatably coupled to the rotary table frame, has a variable length, and moves the position fixing part toward the position fixing block by increasing its length and coupling it to the position fixing block. wealth; And a position fixing folding part connected to the position fixing part, folded while moving on the moving guide part of the rotary table frame, and folded when the position fixing part and the position fixing block are combined to contact the moving guide part. It is characterized by:

In addition, the position fixing folding part includes a pair of rotatable arms coupled to the rotary table frame and capable of rotating; a pair of cam followers respectively connected to the pair of rotary arms and moving while rotating on the moving guide unit; and a pair of link parts located between the rotary arm and the position fixing unit, rotatably connected, and foldable, wherein the pair of link parts is folded when the position fixing part and the position fixing block are combined. It is characterized in that it contacts two points of the moving guide part.

In addition, the position fixing part includes a position fixing dog clutch coupled to the position fixing groove of the position fixing block; And a position fixing arm connected to the position fixing dog clutch, each of the link parts coupled to both ends, and a position fixing arm coupled to the position fixing operation unit.

In the rotary table device according to the present invention, the first gear part and the second gear part are engaged and rotated through the motor part and the reduction part, and the positioning accuracy and rotation speed are improved compared to the conventional technology operated through hydraulic pressure. , production efficiency can be increased by preventing hydraulic oil leaks, and the overall length is reduced, which has the effect of improving space utilization.

In addition, in the rotary table device according to the present invention, the rotary table portion is rotated through the clamp unit portion and the position fixing unit portion and is accurately positioned and fixed at the set position, which has the effect of further improving positional accuracy.

1 is a perspective view of a rotary table device according to an embodiment of the present invention.
Figure 2 is a bottom perspective view of a rotary table device according to an embodiment of the present invention.
Figure 3 is a perspective view of the rotary table device according to an embodiment of the present invention as seen from another direction.
Figure 4 is a cross-sectional view taken along line AA' of Figure 3.
Figure 5 is a cross-sectional view taken along line BB' of Figure 3.
Figure 6 is a diagram showing the operation of the clamp unit part of the rotary table device according to an embodiment of the present invention.
Figure 7 is a diagram showing a clamped state of the rotary table device according to an embodiment of the present invention.
Figure 8 is a diagram showing the operation of the position fixing unit of the rotary table device according to an embodiment of the present invention.

Hereinafter, a rotary table device according to an embodiment of the present invention will be described with reference to the attached drawings.

In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a perspective view of a rotary table device according to an embodiment of the present invention, Figure 2 is a bottom perspective view of a rotary table device according to an embodiment of the present invention, and Figure 3 is a rotary table according to an embodiment of the present invention. It is a perspective view of the device viewed from another direction, Figure 4 is a cross-sectional view A-A' of Figure 3, Figure 5 is a cross-sectional view B-B' of Figure 3, and Figure 6 shows the operation of the clamp unit portion of the rotary table device according to an embodiment of the present invention. Figure 7 is a diagram showing the clamped state of the rotary table device according to an embodiment of the present invention, and Figure 8 is a diagram showing the position fixing unit portion of the rotary table device according to an embodiment of the present invention in operation. This is a drawing showing this.

1 to 8, the rotary table device 1 according to an embodiment of the present invention includes a rotary table frame unit 100, a motor unit 200, a reduction unit 300, and a first gear unit 400. ), a second gear unit 500, a rotary table unit 600, and a clamp unit unit 700. A motor unit 200, a reduction unit 300, a rotary table unit 600, and a clamp unit unit 700 are installed in the rotary table frame unit 100.

The rotary table frame unit 100 includes a rotary table frame 110 and a first curvature coupling 120. In the rotary table frame 110, the clamp portion 710 of the clamp unit portion 700 described later is movably installed, the rotary table portion 600 is rotatably coupled, and the position fixing unit portion 800 described later is installed. is installed.

Specifically, the rotary table frame 110 includes a rotary table frame body 111 and a position fixing unit coupling portion 112. The rotary table frame body 111 has a rotary table portion 600 rotatably coupled to the central portion, and a clamp portion 710 is installed inside to be movable in the vertical direction. The rotary table frame body 111 guides the movement of the position fixing folding part 830 of the position fixing unit part 800 so that the position fixing folding part 830 of the position fixing unit part 800 moves while being folded. It is provided with a movement guide part (111a).

The position fixing unit coupling portion 112 is connected to the side of the rotary table frame body 111, and the position fixing operation portion 820 of the position fixing unit portion 800 is rotatably coupled.

The first curvature coupling 120 is connected to the rotary table frame 110 and is clamped or unclamped with the clamp portion 710 of the clamp unit portion 700. The first curvature coupling 120 may be bolted to the rotary table frame 110, and may be clamped with the clamp unit 710 or clamped to the clamp unit 710 when the clamp unit 710 of the clamp unit unit 700 moves upward. When moving downward, it is unclamped with the clamp part 710.

The motor unit 200 is installed in the rotary table frame unit 100 and generates power. The motor unit 200 is a servo motor and is installed inside the rotary table frame unit 100.

The reduction unit 300 is connected to the motor unit 200 and reduces the rotation speed of the motor unit 200. The reduction unit 300 reduces the rotational speed of the motor unit 200 to increase torque.

The first gear unit 400 is connected to the reduction unit 300 and rotates by receiving rotational force from the reduction unit 300. The first gear unit 400 is coupled to the shaft unit 310 of the reduction unit 300 using a pinion gear, and rotates by receiving rotational force from the reduction unit 300.

The second gear unit 500 is engaged and coupled with the first gear unit 400, and rotates by receiving rotational force from the first gear unit 400. The second gear unit 500 is coupled to the rotary cylinder 610 of the rotary table unit 600 with a spur gear.

The rotary table unit 600 is rotatably coupled to the rotary table frame unit 100, is connected to the second gear unit 500, and is rotated by the rotational force of the second gear unit 500.

The rotary table unit 600 includes a rotary cylinder 610, a bearing unit 620, a rotary table 630, a second curvature coupling 640, and a position fixing block 650. The rotating cylinder 610 is connected to the second gear unit 500 and is rotated by the rotational force of the second gear unit 500. The rotating cylinder 610 is connected to the second gear unit 500 on the outer circumference, and rotates together with the second gear unit 500, which is rotated by receiving rotational force from the first gear unit 400. The rotary cylinder 610 is located in the center of the rotary table frame 110.

The bearing unit 620 is connected to the rotary table frame 110 and the rotary cylinder 610, and supports the rotation of the rotary cylinder 610. Because of this, the rotary cylinder 610 can rotate stably and smoothly.

The rotary table 630 is connected to the rotary cylinder 610 and rotates together with the rotary cylinder 610. The rotary table 630 is coupled with a rotary cylinder 610 at the center and a second curvature coupling 640 described later at the bottom.

The second curvature coupling 640 is connected to the rotary table 630, is disposed to face the first curvature coupling 120, and is clamped or unclamped with the clamp unit portion 700. The second curvature coupling 640 is connected to the rotary table 630 and may be disposed inside the rotary table frame 110 and come into contact with the first curvature coupling 120. The second curvature coupling 640 may be bolted to the rotary table 630, and may be clamped to the clamp unit 710 or clamped to the lower side of the clamp unit 710 when the clamp unit 710 of the clamp unit unit 700 moves upward. When moving, it is unclamped with the clamp part 710.

The position fixing block 650 is connected to the rotating cylinder 610 and is coupled to the position fixing unit unit 800. A plurality of position fixing blocks 650 are arranged at the center of the rotating cylinder 610 and spaced apart at the same rotation angle. At this time, the rotation angle means the angle at which the position fixing block 650 is arranged to face the position fixing unit unit 800 when the rotary cylinder 610 rotates at the set angle.

That is, the position fixing blocks 650 may be arranged as a pair to be spaced apart from each other at the center of the rotating cylinder 610 at an angle of 180 degrees. That is, the position fixing blocks 650 may be arranged symmetrically with respect to the center of the rotating cylinder 610 in the left and right directions (based on FIGS. 7 and 8(b)).

The position fixing unit unit 800 is coupled to one of the plurality of position fixing blocks 650. Accordingly, when the rotary table unit 600 rotates at the set angle, the position fixing unit unit 800 is coupled to one of the plurality of position fixing blocks 650, so that the position of the rotary table unit 600 is firmly maintained at the set position. can be fixed.

The clamp unit unit 700 is installed on the rotary table frame unit 100 and operates depending on whether the rotary table unit 600 rotates to clamp or unclamp the rotary table frame unit 100 and the rotary table unit 600. do.

A plurality of clamp unit units 700 may be installed to be spaced apart from each other on the rotary table frame unit 100, and may be connected to the first curvature coupling 120 of the rotary table frame unit 100 and the first curvature coupling 120 of the rotary table unit 600. 2 Cubic couplings 640 may also be installed to be spaced apart in the same number as the clamp unit portion 700.

Specifically, when the rotary table unit 600 is not rotating, the clamp unit unit 700 operates to clamp the rotary table frame unit 100 and the rotary table unit 600. Conversely, when the rotary table unit 600 rotates, the clamp unit unit 700 operates to unclamp the rotary table frame unit 100 and the rotary table unit 600.

The clamp unit unit 700 includes a clamp unit 710 and a clamp operation unit 720. The clamp unit 710 is movably installed on the rotary table frame unit 100 and moves toward the rotary table unit 600 to be clamped or unclamped with the rotary table frame unit 100 and the rotary table unit 600.

The clamp unit 710 is provided inside the rotary table frame unit 100 by attaching the first curvic coupling 120 of the rotary table frame unit 100 and the second curvic coupling 640 of the rotary table unit 600. It is placed at the bottom and can move in the up and down directions.

When the rotary table unit 600 is not rotated or rotated at a set angle and stops, the clamp unit 710 is moved upward by the operation of the clamp operation unit 720, which will be described later, and the second part of the rotary table frame unit 100 is moved upward. It is clamped to the first curvature coupling 120 and the second curvature coupling 640 of the rotary table unit 600.

Conversely, when the rotary table unit 600 is rotated, the clamp unit 710 is moved downward by the operation of the clamp operation unit 720, which will be described later, and the first curvature coupling ( 120) and the second curvature coupling 640 of the rotary table unit 600.

The clamp operating unit 720 is installed on the rotary table frame unit 100 using an air cylinder, has a variable length, and increases in length to pressurize the clamp unit 710 to connect the clamp unit 710 to the rotary table unit 600. move to the side.

When the rotary table unit 600 does not rotate or rotates at a set angle and stops, the clamp operating unit 720 increases its own length and presses the clamp unit 710 to connect the clamp unit 710 to the rotary table unit 600. Move it to the side, that is, upward (see FIGS. 6 and 7). Due to this, the clamp unit 710 is clamped to the first curvic coupling 120 of the rotary table frame unit 100 and the second curvic coupling 640 of the rotary table unit 600.

Conversely, when the rotary table unit 600 is rotated, the clamp operating unit 720 shortens its own length, releases the pressure on the clamp unit 710, and moves the clamp unit 710 away from the rotary table unit 600. Move it in the direction, that is, downward. Due to this, the clamp unit 710 is unclamped to the first curvic coupling 120 of the rotary table frame unit 100 and the second curvic coupling 640 of the rotary table unit 600.

The rotary table device 1 may further include a position fixing unit unit 800. The position fixing unit unit 800 is installed on the rotary table frame unit 100 to be movable toward the rotary table unit 600, and is coupled to the rotary table unit 600 to fix the rotary table unit 600 in the set position. .

The position fixing unit unit 800 includes a position fixing unit 810, a position fixing operating unit 820, and a position fixing folding unit 830. The position fixing unit 810 is coupled to the position fixing block 650. The position fixing unit 810 includes a position fixing dog clutch 811 and a position fixing arm 812. The position fixing dog clutch 811 is coupled to the position fixing groove 651 of the position fixing block 650.

The position fixing arm 812 is connected to the position fixing dog clutch 811, and the link portion 833 of the position fixing folding part 830 described later is coupled to both ends, respectively, and is coupled to the position fixing operation part 820. . The position fixing arm 812 moves in the left and right directions (based on FIG. 8) when the position fixing operation unit 820 operates. At this time, the position fixing dog clutch 811 moves together with the position fixing arm 812 and is coupled to or disengaged from the position fixing groove 651 of the position fixing block 650.

The position fixing operation part 820 is connected to the position fixing part 810 by an air cylinder, is rotatably coupled to the position fixing unit coupling part 112 of the rotary table frame 110, and has a variable length. is stretched and the position fixing part 810 is moved to the position fixing block 650 and coupled to the position fixing block 650.

When the rotary table unit 600 is not rotated or rotated at a set angle and stops, the position fixing operation unit 820 increases its length, and the position fixing unit 810 connected to the position fixing operation unit 820 acts as a position fixing block. It is moved to the (650) side and combined with the position fixing block (650). At this time, the position fixing folding part 830, which will be described later, is folded and comes into contact with two points of the moving guide part 111a.

That is, the position fixing unit unit 800 is in contact with 1 point where the position fixing part 810 and the position fixing block 650 are combined, and 2 points where the position fixing folding part 830 is in contact with 2 points of the moving guide part 111a. As it is fixed at three points including the main point, the rotary table unit 600 can be more firmly fixed at the set position. That is, the rotary table unit 600 can be fixed at a set position, and positional accuracy can be improved.

When the rotary table unit 600 is rotated, the position fixing operation unit 820 reduces its own length, and the position fixing unit 810 connected to the position fixing operation unit 820 moves in a direction away from the position fixing block 650. It is moved to and disconnected from the position fixing block 650. At this time, the position fixing folding part 830, which will be described later, is unfolded and spaced apart from the moving guide part 111a.

The position fixing folding part 830 is connected to the position fixing part 810 and is folded while moving on the moving guide part 111a of the rotary table frame 110, and the position fixing part 810 and the position fixing block 650 When combined, it is folded and comes into contact with the movement guide portion (111a).

The position fixing folding part 830 includes a pair of rotating arms 831, a pair of cam followers 832, and a pair of link parts 833. A pair of rotary arms 831 are coupled to the rotary table frame 110 and are rotatable. The rotary arm 831 has one end rotatably coupled to the rotary table frame 110, a cam follower 832 coupled to the other end, and a link portion 833 rotatably coupled to be foldable.

A pair of cam followers 832 are respectively connected to a pair of rotary arms 831 and move while rotating on the movement guide unit 111a. The cam follower 832 rotates and moves on the movement guide portion 111a when the rotary arm 831 rotates, and can prevent excessive rotation of the rotary arm 831 by limiting the rotation of the rotary arm 831. At this time, the link portion 833 connected to the rotary arm 831 can also be folded or unfolded within a setting range. As a result, the position-fixing folding portion 830 can be operated to be stably folded.

A pair of link parts 833 are located between the rotary arm 831 and the position fixing part 810, are rotatably connected, and are foldable. The pair of link parts 833 are folded when the position fixing part 810 and the position fixing block 650 are combined and come into contact with two points of the moving guide part 111a.

When the rotary table unit 600 does not rotate or stops rotating at a set angle, the position fixing operation unit 820 operates to increase its length. The position fixing unit 810 connected to the position fixing operation unit 820 is moved toward the position fixing block 650 and is coupled to the position fixing block 650. At this time, the position fixing folding part 830 is folded and comes into contact with two points of the moving guide part 111a.

Specifically, the link part 833 of the position fixing folding part 830 is folded while rotating toward the position fixing part 810, and the rotation arm 831 of the position fixing folding part 830 connected to the link part 833 is folded. It is rotated. At this time, the cam follower 832 connected to the rotary arm 831 rotates and moves on the movement guide unit 111a and comes into contact with two points of the movement guide unit 111a.

When the rotary table unit 600 is rotated, the position fixing operation unit 820 is operated to reduce its length. The position fixing unit 810 connected to the position fixing operation unit 820 is moved in a direction away from the position fixing block 650 and is disconnected from the position fixing block 650. At this time, the position fixing folding part 830 may be unfolded and not in contact with the moving guide part 111a.

Specifically, the link part 833 of the position fixing folding part 830 rotates and unfolds in a direction away from the position fixing part 810, and the rotation arm 831 of the position fixing folding part 830 connected to the link part 833 ) is rotated. At this time, the cam follower 832 connected to the rotary arm 831 may be moved while rotating on the movement guide unit 111a and may not be in contact with the movement guide unit 111a.

As described above, in the rotary table device 1 according to the present invention, the first gear unit 400 and the second gear unit 500 are engaged and rotated through the motor unit 200 and the reduction unit 300 to operate. With this structure, not only can positional accuracy and rotational speed be improved compared to conventional technology operated through hydraulics, but hydraulic leakage can be prevented, thereby increasing production efficiency. Furthermore, the overall length of the rotary table device 1 can be reduced, and space utilization can be improved.

In addition, in the rotary table device (1) according to the present invention, the rotary table portion (600) is rotated through the clamp unit portion (700) and the position fixing unit portion (800) and is accurately positioned and fixed at the set position, thereby improving positional accuracy. can be improved further.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will recognize that various modifications and other equivalent embodiments are possible therefrom. You will understand.

Therefore, the true technical protection scope of the present invention should be determined by the scope of the patent claims below.

1: Rotating table device 100: Rotating table frame part
110: Rotating table frame 111: Rotating table frame body
111a: moving guide part 112: position fixing unit coupling part
120: First curb coupling 200: Motor part
300: reduction unit 310: shaft unit
400: first gear unit 500: second gear unit
600: Rotating table part 610: Rotating cylinder
620: bearing part 630: rotary table
640: 2nd curb coupling 650: Position fixing block
651: Position fixing groove 700: Clamp unit part
710: Clamp part 720: Clamp operating part
800: Position fixing unit 810: Position fixing unit
811: Position fixing dog clutch 812: Position fixing arm
820: Position fixing operation part 830: Position fixing folding part
831: Rotating arm 832: Cam follower
833: Link unit

Claims (9)

Rotating table frame part;
A motor unit installed on the rotary table frame and generating power;
A deceleration unit connected to the motor unit and reducing the rotation speed of the motor unit;
a first gear unit connected to the reduction unit and rotated by receiving rotational force from the reduction unit;
a second gear unit engaged and coupled with the first gear unit and rotated by receiving a rotational force from the first gear unit;
a rotary table unit rotatably coupled to the rotary table frame unit, connected to the second gear unit, and rotated by a rotational force of the second gear unit; and
A clamp unit unit installed on the rotary table frame unit and operated depending on whether the rotary table unit rotates to clamp or unclamp the rotary table frame unit and the rotary table unit.
According to clause 1,
A position fixing unit unit installed on the rotary table frame to be movable toward the rotary table unit and coupled to the rotary table unit to fix the rotary table unit at a set position.
According to clause 2,
The clamp unit part,
a clamp unit movably installed on the rotary table frame unit and moved toward the rotary table unit to clamp or unclamp the rotary table frame unit and the rotary table unit; and
A clamp operating unit that is installed on the rotary table frame, has a variable length, and extends to press the clamp unit to move the clamp unit toward the rotary table unit.
According to clause 3,
The rotary table frame part,
a rotary table frame in which the clamp portion is movably installed, the rotary table portion is rotatably coupled, and the position fixing unit portion is mounted; and
A rotary table device comprising a first curvature coupling connected to the rotary table frame and clamped or unclamped with the clamp portion.
According to clause 4,
The rotary table unit,
a rotating cylinder connected to the second gear unit and rotated by the rotational force of the second gear unit;
a bearing portion connected to the rotary table frame and the rotary cylinder and supporting rotation of the rotary cylinder;
a rotary table connected to the rotary cylinder and rotated together with the rotary cylinder;
a second cubic coupling connected to the rotary table, disposed to face the first cubic coupling, and clamped or unclamped with the clamp unit portion; and
A position fixing block connected to the rotary cylinder and coupled to the position fixing unit unit.
According to clause 5,
A plurality of position fixing blocks are arranged at the center of the rotating cylinder and spaced apart at the same rotation angle,
A rotary table device, characterized in that the position fixing unit unit is coupled to any one of the plurality of position fixing blocks.
According to clause 6,
The position fixing unit part,
A position fixing unit coupled to the position fixing block;
A position fixing operation that is connected to the position fixing part, rotatably coupled to the rotary table frame, has a variable length, and moves the position fixing part toward the position fixing block by increasing its length and coupling it to the position fixing block. wealth; and
A position fixing folding part connected to the position fixing part, folded while moving on the moving guide part of the rotary table frame, and folded when the position fixing part and the position fixing block are combined, and contacting the moving guide part; A rotary table device characterized in that.
According to clause 7,
The position fixing folding part,
A pair of rotary arms coupled to the rotary table frame and rotatable;
a pair of cam followers respectively connected to the pair of rotary arms and moving while rotating on the moving guide unit; and
It includes a pair of link parts located between the rotary arm and the position fixing part, rotatably connected, and foldable,
A rotary table device, wherein the pair of link parts are folded when the position fixing part and the position fixing block are combined and come into contact with two points of the moving guide part.
According to clause 8,
The position fixing part is,
A position fixing dog clutch coupled to the position fixing groove of the position fixing block; and
A rotary table device comprising: a position fixing arm connected to the position fixing dog clutch, each of the link parts coupled to both ends, and a position fixing arm coupled to the position fixing operation unit.

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