KR101157323B1 - Belt type tool turret - Google Patents

Abstract

The present invention relates to a turret tool bench for use in machine tools such as automatic lathes, machining centers, and more particularly, a timing belt formed between a motor pulley 12 and a shaft pulley 15 for powering a motor for driving a tool. The power transmitted to the shaft 14 through the 13 and the power transmitted to the shaft 14 is transmitted to the tool driving shaft of the tool holder for driving the tool, but the shaft 14 has a key groove 14a for driving the tool. ) Is formed and supported by the bearing 17, the other side is in a free state that is not coupled with the other configuration in which the shaft pulley 15 is coupled to power the belt with easy replacement when the timing belt 13 is broken. It is a turret tool bench to transmit.

Turret Tool Stand, Disc, Timing Belt, Automatic Lathe

Description

Turret tool bench that transmits power to the belt {Belt type tool turret}

The present invention relates to a turret tool bench used in a machine tool such as an automatic lathe, a machining center, and more particularly, transmits power of a motor for driving a tool to a shaft through a timing belt formed between the motor pulley and the shaft pulley. The power transmitted to the shaft is transmitted to the tool drive shaft for driving the tool, but the shaft is supported by a bearing on which one side is formed with a key groove for driving the tool, and the other side is not coupled with another configuration in which the shaft pulley is coupled. It is a turret tool that transmits power to the belt which is easy to replace when the timing belt is damaged because it is not free.

In general, the turret tool stand is the type in which the side for processing the workpiece and the side in which the tool is fastened are vertical, that is, the direction of the workpiece is called the front, and a disk is formed on the side opposite to the front, and the tool holder is mounted on the side of the disk. In order to use the rotational power of the motor as the driving tool, the power switching structure such as the bevel gear is required in the turret tool bench. Therefore, when it is used for a long time, the thermal deformation of the shaft occurs due to the heat generated by the gear contact. Wear due to contact shortens the lifespan and causes noise.

In order to solve this problem, Korean Patent No. 655919 proposes a belt type turret tool and is shown in FIGS. 1 and 2.

The conventional belt type turret tool bench has the advantage of preventing heat generation by gear contact and reducing noise by driving the drive shaft using a belt instead of a bevel gear, but when replacing the belt after a certain period of time, the nameplate ( Cover) from the disc, disassemble the gearbox again, disassemble the shaft in the gearbox, put the belt on the pulley, assemble the shaft, assemble the gearbox, assemble the nameplate and then readjust the tension of the belt. It is inconvenient to go through a complicated process.

In particular, in the case of the turret tool, a large number of components, flow paths, cutting flow paths, etc. are intricately intertwined, and thus, the belt replacement work is not easy and the work space is also narrow, resulting in a lot of time and cost for belt replacement.

Accordingly, the present invention provides a turret tool stand, but is formed on the turret tool stand to configure the power transmission system for driving the tool to prevent heat deformation caused by heat generated by the gear contact and to prevent noise at the same time The shaft pulley, in which the belt is in contact with the power transmission, is coupled by a lock nut formed on one side of the shaft, and the shaft is supported by one or more bearings for power transmission to the rotary tool. It is an object of the present invention to provide a turret tool that transmits power to a belt that can be replaced by a simple process without removing the nut and shaft pulley.

The present invention provides a turret tool platform for transmitting power to the belt, the turret tool platform is a main motor for driving the tool, a servo motor for indexing the disk for tool replacement is formed, the power of the main motor is coupled to the motor shaft It is transmitted to the motor pulley which is transmitted by the timing belt to the shaft pulley which is a certain distance from the motor pulley, the shaft coupled to the shaft pulley transmits power to the tool drive shaft for rotating tool drive, the shaft pulley It is coupled between the lock nut formed at one end of the shaft and the dog penetrated by the shaft, so that the belt can be replaced without removing the cover, the lock nut and the shaft pulley.

The turret tool stand for transmitting power to the belt according to the present invention is formed in the turret tool stand to configure the power transmission method for driving the tool to prevent heat deformation caused by heat generated by the gear contact and to prevent noise.

In addition, when the belt is replaced by a shaft pulley in which the belt is in contact with the power transmission is coupled by a lock nut formed on one side of the shaft and the shaft is supported by one or more bearings for power transmission to the rotary tool. The belt can be changed in a simple process without removing the cover, locknut and shaft pulley.

The present invention relates to a turret tool bench used in a machine tool such as an automatic lathe, a machining center, and more particularly, transmits power of a motor for driving a tool to a shaft through a timing belt formed between the motor pulley and the shaft pulley. The power transmitted to the shaft is transmitted to the tool drive shaft for driving the tool, but the shaft is supported by a bearing on which one side is formed with a key groove for driving the tool, and the other side is not coupled with another configuration in which the shaft pulley is coupled. It is a turret tool that transmits power to the belt which is easy to replace when the timing belt is damaged because it is not free.

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

Figure 3 is a schematic view of the configuration of the present invention, Figure 4 is a AA section view of Figure 3, Figure 5 is a partially enlarged view of Figure 4, Figure 6 is a partial structural view of the present invention, the belt according to the present invention The turret tool bench for transmitting power to the turret tool bench is provided with a main motor 10 for driving a tool and a servo motor 20 for indexing a disk for tool change. The power of the main motor 10 is driven by a motor shaft ( 11 is transmitted to the motor pulley 12 is coupled to the shaft pulley 15 is a predetermined distance away from the motor pulley 12 is transmitted by the timing belt 13, coupled to the shaft pulley 15 The shaft 14 is transferred to the tool driving shaft of the tool holder for driving the rotary tool, and the shaft pulley 15 is formed through the lock nut 16 and the shaft 14 formed at one end of the shaft 14. Do not separate the cover, locknut, shaft pulley, etc. It is a feature that the timing belt 13 can be easily replaced without being necessary.

First, the main motor 10 is a motor for generating power for driving a tool, and the servo motor 20 is a disk indexing motor for rotating a disk for tool change.

A motor pulley 12 and a shaft pulley 15 are formed on the motor shaft 11 and the shaft 14 of the main motor 10, respectively, and the motor pulley 12 and the shaft pulley 15 are timing belts 13. Power is transmitted by). The shaft pulley 15 is coupled to the shaft 14 and the shaft 14 is supported by the bearing 17 on one side and the shaft pulley 15 on the other side. One side of the shaft 14, that is, the side where the key groove 14a is formed for driving the tool, is supported by the bearing 17, and the bearing 17 is fixed by the flange 18 and the dog 19. do. In addition, the motor pulley 12 is coupled to the other side of the shaft 14 and the motor pulley 12 is coupled to the shaft 14 by the lock nut 16.

As a result, one side of the shaft 14, i.e., the side in which the key groove 14a is formed for driving the tool, is supported by the bearing 17, but the other side is any configuration other than the motor pulley 12 and the lock nut 16. Free state not combined. Here, the free state is not a state of being movable, but a state of being uncoupled with any configuration.

The biggest feature of the present invention is that one side of the shaft 14 is freely supported in any configuration, as compared to the conventional belt type turret tool bench, and the timing belt is a consumable item when the turret tool bench is used for a long time. It is necessary to replace it after time use and it is easy to replace such a belt.

That is, when the timing belt 13 is replaced, one side of the timing belt is inserted into the motor pulley 12 without removing the cover, lock nut and shaft pulley after removing the timing belt that needs to be replaced for a long time. The other side is inserted into the shaft pulley 15 and pulled and fixed to the motor pulley 12 away from the disk 3 to adjust the tension applied to the timing belt 13 and then the main motor 10 to the motor base ( Belt replacement is completed by a simple process to fix in 2).

In other words, the timing belt 13 may adjust the tension as the motor shaft 11 moves. That is, a long hole (not shown) is formed in the motor base 2 to change the coupling position of the main motor 10 and the motor base 2 by the distance of the long hole, resulting in the motor pulley 12 and the shaft pulley. Since the distance between the parts 15 can be changed, the tension of the timing belt 13 can be adjusted.

Therefore, if it is difficult to insert the timing belt 13 into the shaft pulley 15 in the absence of movement of the motor shaft 11, the main motor 10 may be moved toward the shaft 14 by the tension of the timing belt 13. After the tension is lowered, the timing belt 13 is inserted, and then the main motor 10 is moved to the original position to adjust the tension of the timing belt 13.

Another feature of the present invention is to couple the dog 19 to one side of the shaft 14, the dog 19 to form a dog groove (19a) and the one side of the dog 19 to form a proximity switch 36 The position of the shaft 14 can be grasped. That is, the key groove 14a formed in the shaft 14 is coupled to the key formed on the tool driving shaft of the tool holder to which the tool is fastened. In general, the shape of the key is a plate shape of a rectangular parallelepiped, and the position of the key groove 14a is the key. Since the disk 3 rotates in the horizontal state with respect to the tool, the position change of the shaft 14 is a prerequisite for the rotation of the disk 3.

As a result, a dog 19 having a dog groove 19a is coupled to one side of the shaft 14 to accurately determine the rotational position of the shaft 14 to secure stability for tool replacement. If the tool exchange is performed in a state in which the rotational position of the shaft 14 is not accurately determined, the key groove 14a formed in the shaft 14 and the key of the tool driving shaft collide with each other, thereby causing breakage of the key.

The bearing 17 formed on the shaft 14 is supported by the engaging jaw and the flange 18 formed on the shaft 14 itself. In the illustrated embodiment, the inner ring of the bearing 17 is engaged by the shaft 14. It is supported by the jaw and the outer ring is supported by the flange 18 to adjust the preload of the bearing 17 by the amount of tightening of the flange 18. If the position of the flange is fixed, the preload of the bearing 17 can be adjusted by the tightening amount of the lock nut 16.

In addition, a complex bending hole 37 may be formed between the flange 18 and the shaft 14 to prevent foreign foreign matter from penetrating, and the bending hole 37 may be bent at least twice. It is desirable to have a structure.

Then, the disk indexing operation for tool change, the power of the servo motor 20 is transmitted to the shaft 14 gear via the coupling 22, the gear is formed on one side of the shaft 14 gear is pivoting It meshes with the cubic coupling 33. At this time, the turning cubic coupling 33 is fixedly coupled to the disk 3 to rotate the disk 3, so that the disk rotation, that is, a tool change operation.

At this time, when cutting the workpiece with a rotary tool or the like, the disk 3 should be fixed to the body, and this role is formed on the pivotal coupling 33 and the fixed cubic coupling 32 formed on one side of the holders 30 and 31. ) And the piston cubic coupling 34 is performed.

First, the turning cubic coupling 33 is formed not only on the outer circumferential surface that meshes with the gear shaft 14, but also on the cross section that engages with the piston cubic coupling 34, and the fixed cubic coupling 32 is a piston cubic coupler. The gear teeth are formed only in the end face engaged with the ring 34, and the piston cubic coupling 34 has a gear tooth formed in the end face that engages with the fixed curb coupling 32 and the pivotal coupling 33.

In addition, the fixed cubic coupling 32 is fixed to the body as a set screw 35 does not rotate, so the piston cubic coupling 34 is advanced toward the fixed cubic coupling 32, turning the cubic coupling 33 When the mesh is engaged with the fixed cubic coupling 32 at the same time, the turning cubic coupling 33 is in a fixed state that cannot rotate in the end.

In other words, since the turning cubic coupling 33 is fixed in position and cannot be moved by being geared by the fixed cubic coupling 32 and the turning cubic coupling 33, the turning cubic coupling 33 and The bolted disk is also fixed against rotation, so that the cutting load can withstand the processing load.

On the contrary, when the piston cubic coupling 34 is separated from the fixed cubic coupling 32 and the turning cubic coupling 33, the gear teeth are released and the above-mentioned tool exchange operation is performed.

The operation of the piston cubic coupling 34 may be moved by applying hydraulic pressure to a flow path formed at one side of the holders 30 and 31, and the holders 30 and 31 may be moved. It serves as a stopper to guide the movement and limit the stroke.

1 is a configuration diagram of a conventional belt type turret tool

2 is an enlarged view of a portion of FIG. 1;

3 is a structural example of the present invention

4 is a section A-A of FIG.

5 is an enlarged view of a portion of FIG. 4;

Figure 6 is a partial configuration example of the present invention

7 is a model diagram of FIG. 4.

Description of the Related Art

1. Base 2. Motor Base 3. Disc

4. Cover

10. Main motor 11. Motor shaft 12. Motor pulley

13. Timing belt 14. Shaft 14a. Keyway

15. Shaft pulley 16. Locknut 17. Bearing

18. Flange 19. Dog 19a. Dog Home

20. Servo motor 21. Motor shaft 22. Coupling

23. Shaft Gear 24. Spur Gear 25. Bearing

30, 31. Holder 32. Fixed Cubic Coupling 33. Swivel Cubic Coupling

34. Piston civic coupling 35. Set screw 36. Proximity switch

37. Bending Hole

Claims (5)

In the turret tool platform is provided with a main motor 10 for driving a tool, and a servo motor 20 for indexing a disk for tool replacement, Power of the main motor 10 is transmitted to the motor pulley 12 coupled with the motor shaft 11 and transmitted by the timing belt 13 to the shaft pulley 15 which is spaced apart from the motor pulley 12 by a predetermined distance. The shaft 14 coupled to the shaft pulley 15 is transferred to the tool driving shaft of the tool holder for driving the rotary tool, and the shaft pulley 15 is a lock nut 16 formed at one end of the shaft 14. ) Is a belt that is coupled between the dog (19) penetrated by the shaft (14) to facilitate replacement of the timing belt (13) without removing the cover, locknut, shaft pulley, etc. Turret Tool Platform The method of claim 1, One side of the shaft 14 is supported by a bearing 17 formed between the flange 18 and the dog 19 and prevents foreign matter from penetrating into the interior between the flange 18 and the shaft 14. Turret tool for transmitting power to the belt characterized in that the bending hole 37 is bent more than two times to form The method of claim 1, Fixing the disk 3 to the body during the cutting process by the tool is a fixed cubic coupling 32 formed on one side of the holder (30, 31) that is fixedly coupled to the body, the turning cubic coupling 33 and The turret tool performs an operation by the piston cubic coupling 34, wherein the holders 30 and 31 guide the movement of the piston cubic coupling 34 and transmit power to the belt, which is characterized by acting as a stopper. versus The method of claim 1, Since the position of the motor pulley 12 can be adjusted by adjusting the position at which the main motor 10 is coupled to the motor base 2, the power is transmitted to the belt, which can adjust the tension of the timing belt 13. Turret Tool Bench The method of claim 1, A dog groove 19a for position sensing is formed in the dog 19, and a proximity switch 36 is formed at one side of the dog 19 to detect the position of the dog 19 as a signal detected by the proximity switch 36. Turret tool for transmitting power to the belt characterized by grasping the rotational position of the shaft 14 by grasping the

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