KR100635256B1 - The turret - Google Patents

Abstract

A turret tool post in which a housing regulating the eccentricity is formed is provided to absorb the change of the distance due to regulation of the eccentricity by the housing by connecting a motor pulley and a gear shaft with a timing belt. A turret tool post in which a housing regulating the eccentricity is formed includes a rotary tool drive unit and a tool exchange drive unit. The rotary tool drive unit includes a shaft(22), a body(1), a gear box(30), a tool drive shaft(28), and a rotary tool(4,4a). The tool exchange drive unit includes a motor pulley(10a), a gear shaft(12), a housing(13), a spur gear(12a), a pivot curvic coupling(15), a fixing curvic coupling(16), and a piston curvic coupling(17). The piston is attached to or detached from the pivot curvic coupling and the fixing curvic coupling to interfere the rotation of a disc or release the interference.

Description

Turret tool with housing for adjusting eccentricity {The turret}

1 is a configuration example of the present invention

2 is a block diagram of a tool change drive unit according to the present invention;

Figure 3 is an exemplary view of the operating state of the proximity switch turret tool according to the present invention

4 is an enlarged view of a portion of the present invention;

Figure 5 is a flow chart of the tool exchange operation of the turret tool according to the present invention

<Description of Symbols for Major Parts of Drawings>

1. Body 2. Disc 3. Name plate

4, 4a. Rotary tool 10. Servo motor 10a. Motor pulley

11. Timing belt 12. Gear shaft 12a. Spur gear

12b. Timing Pulley 13. Housing

14. Bearing 15. Swivel Cubic Coupling 16. Fixed Cubic Coupling

17. Piston Cubic Coupling 18. First Inlet 19. Second Inlet

20. Main motor 21. Coupling 21a. hall

22. Shaft 23. Needle Bearing 24. Bearing

25, 25a. Key 26. Bevel Gear 27. Drive Shaft

28. Tool drive shaft 29. Flange 30. Gearbox

31. Proximity switch a 32. Proximity switch b 33. Proximity switch c

34. Sensing member 35. Dog 36. Set screw

40. Rotating tool drive unit 50. Tool change drive unit

The present invention relates to a turret tool stand (turret head device), and more particularly, to form a housing that is formed in the turret tool body to surround the outer surface of the gear shaft for transmitting power for the purpose of tool change, the housing is eccentric It is formed to be adjustable to eventually adjust the distance between the gear shaft and the cubic coupling, so as to reduce the noise and connected between the motor pulley and the gear shaft with a timing belt, absorbing the change in the distance by the control of the eccentricity of the housing At the same time, it is a turret tool stand that can improve the commerciality by eliminating friction noise caused by gear contact.

In general, the turret tool stand installed in the Numerically Controlled Lathe or Machining Center has a lot of noise caused by tool rotation by rotating the disk at high speed to shorten the tool change time as well as the noise caused by cutting. Due to the machining error of each part, there was a problem that the tool precision was not made at the correct position and the machining precision was lowered.

In addition, when assembling the turret tool, the gear shaft is fixed to one side of the body with little tolerance so that it is impossible to adjust the eccentricity, and it takes a lot of time to adjust the accuracy, even if the gear shaft and the cubic coupling are placed in the correct position. There are many cases where the meshing ratio of the spur gear formed on the gear shaft and the spur gear formed on the outer circumferential surface of the gear shaft does not become as desired.

Accordingly, the present invention comprises a housing surrounding the outer surface of the gear shaft formed in the turret tool, and to enable the eccentric adjustment of the housing to reduce the noise generated during tool change, timing the distance change caused by the eccentric adjustment Its purpose is to provide a turret tool bench that can be absorbed by pulleys and timing belts.

In addition, it is another object to provide a turret tool stand that is easy to assemble the parts can be adjusted the eccentricity of the housing.

The present invention relates to a turret tool stand (turret head device), and more particularly, the housing 13 is formed in the turret tool stand body (1) surrounding the outer surface of the gear shaft 12 for transmitting power for tool replacement purposes And the housing 13 is formed to control the amount of eccentricity, and thus, the distance between the gear shaft 12 and the turning civic coupling 15 can be adjusted, thereby adjusting the backlash to smooth the movement and at the same time making noise. It is a turret tool bench that can reduce the cost and improve the merchandise of the turret tool bench.

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

First, Figure 1 is an exemplary view of the configuration of the present invention, Figure 2 is a configuration diagram of the tool change drive unit of the present invention, the turret tool bench is formed with a housing for adjusting the amount of eccentricity according to the present invention is

In the turret tool bench provided with the main motor 20 for driving the rotary tools (4, 4a) and the servo motor 10 for generating power for tool change,

The shaft 22 connected to the main motor 20 and the coupling 21 to be rotated, the body 1 formed on the outer surface of the shaft 22, and the shaft 22 and the key 25 are coupled to each other. Gearbox 30, a tool drive shaft 28 connected to the gearbox 30 by another key 25a, and rotary tools 4, 4a driven by the tool drive shaft 28. Rotating tool drive unit 40 and configured,

A motor pulley 10a formed on the shaft of the servomotor 10, a gear shaft 12 which is powered by the motor pulley 10a and connected by a belt, and the gear shaft 12 are included. And a housing 13 having one or more bearings 14 formed therein, a spur gear 12a formed at one end of the gear shaft 12, and a pivotal coupling receiving rotational force by the spur gears 12a. 15) and a fixed curb coupling (16) for limiting the rotation of the turning cubic coupling, and the rotational cubic coupling (15) and the fixed cubic coupling (16) detached from the interference of the disk (2) Or a tool change driving part 50 composed of a piston curb coupling 17 for releasing interference.

The main motor 20 is a motor for driving the rotary tools (4, 4a), the servo motor 10 is a motor used for tool replacement purposes. Conventionally, the main motor 20 and the servo motor 10 have been used as one, but the present invention uses the main motor 20 and the two servo motors 10 due to delay in working time, difficulty in manufacturing, and the like.

Looking at the driving sequence of the rotary tool 4, the shaft of the shaft 22 and the main motor 20 is connected by a coupling 21, the hole 21a is formed on one side of the coupling 21 By operating the proximity switch a (31) to adjust the rotational position of the shaft 22, which will be described in detail in the operation of the proximity switch to be described later.

The shaft 22 and the gearbox 30 are coupled to the key 25 so that they can be separated if necessary. A drive shaft 27 having a key groove is formed in the gear box 30, and the tool driving shaft 28 is engaged with another key 25 a to the drive shaft 27 to be rotated.

That is, the drive shaft 27 can be rotated by the bevel gear in place, but does not move in the axial direction of the tool drive shaft 28, and the key groove is formed on only one side thereof, so that the rotary tools 4 and 4a are provided. Only one of the tool drive shafts 28 formed at the rear of the field is engaged with the drive shaft 27 to be rotated (only the left rotary tool 4 of FIG. 1 is activated).

The rotary tool drive unit 40 may be formed in a pair of bevel gears, or may not be formed. That is, when the tool drive shaft 28 and the rotary tool 4, 4a axis are in a straight line, the bevel gear is not necessary, and when the axis is vertical, the bevel gear is required.

The tool change operation is as follows.

The servo motor 10 can be rotated left and right by a desired angle. A motor pulley 10a is formed on an axis of the servo motor 10, and a belt 11 is connected between the motor pulley 10a and the gear shaft 12. The belt 11 is configured as a timing belt so that slip does not occur during driving, for precise control of the servomotor 10.

Of course, it is also possible to drive as a general pulley and belt, but slip may occur, so that if possible, a combination in which the slip does not occur, that is, a combination of the motor pulley 10a, the timing belt 11, the sprocket and the chain, as shown in this embodiment, desirable.

Outside the gear shaft 12 is formed a housing 13 that can adjust the amount of eccentricity. The position of the housing 13 fixed to the body 1 may vary by about 0.5 mm to move the center of the gear shaft 12.

The housing 13 is fixed to the most suitable position inside the body 1 and then fixed as a set screw 36, but it is preferable to use a pointed set screw for more precise position fixing.

A spur gear 12a is formed at one end of the gear shaft 12, and the spur gear 12a is engaged with the turning cubic coupling 15 to rotate.

After all, the biggest feature of the present invention is to adjust the bite rate between the spur gear 12a of the gear shaft 12 and the gear formed on the outer circumferential surface of the pivotal coupling 15 as the position adjustment of the housing 13 so that undercut does not occur. By increasing the bite rate in the range, it can reduce noise and make power transmission more smooth.

Since the pivotal cubic coupling 15 and the disk 2 are fixedly coupled by bolts, when power is transmitted to the pivotal coupling 15, the disk 2 is rotated to perform a tool change.

The piston cubic coupling 17 controls the operation of the turning cubic coupling 15. The piston cubic coupling 17 is not coupled to the turning cubic coupling 15 and the fixed cubic coupling 16. The tool change is performed in a non-rotating state, that is, in a state in which the turning civic coupling 15 can be freely rotated. In contrast, the piston civic coupling 17 is connected to the turning civic coupling 15 and the fixed civic coupling 16. When the state is coupled with the disk 2 is fixed.

The disk 2 must be firmly fixed to the body 1 to prevent the disk 2 from rotating due to the cutting force generated by the cutting.

Looking at the operation of the piston cubic coupling 17, when hydraulic pressure is applied toward the first inlet 18, the piston cubic coupling 17 is downward in the figure, that is, the fixed cubic coupling 16 and the turning cubic coupling ( 15, the pivotal coupling 15 is fixed to the rotational cubic coupling 15 is fixed, and conversely, when the hydraulic pressure is applied toward the second inlet 19, the piston cubic coupling 17 is moved in the upward direction of the drawing to pivotal coupling (15). ) Will release the interference. When the interference is released, the disk may be rotated by the servomotor 10. On the contrary, when the disk is coupled between the cubic couplings, the disk 2 is fixed.

The piston cubic coupling 17 is coupled to the dog to be described later.

Next, look at the operation of the proximity switch a, b, c (31, 32, 33) as follows.

Figure 3 is an exemplary view of the operation of the proximity switch turret tool according to the present invention, the proximity switch a (31) is formed a little away from the side of the coupling 21, the coupling 21 has a hole (21a) Is formed.

First, when the proximity switch a is turned on to set the initial position, that is, when an object is detected, the position is adjusted as the main motor 20 so that the proximity switch a is turned off, that is, the hole 21a formed in the coupling 21. ) Is the initial setting position when the object is not detected.

This is because the key 25a of the tool drive shaft 28 connected to the drive shaft 27 may be damaged if the disk 2 is rotated in a state not being the initial setting position. As a result, the proximity switch a (31) checks the position of the hole (21a) to determine the position where the key (25a) of the tool drive shaft 28 can be rotated without interference from the key groove of the drive shaft (27). Play a role.

4 is an enlarged view of a part of the present invention, wherein the piston cubic coupling 17 and the dog 35 are integrally coupled, and one end of the dog 35 has a sensing member 34 formed therein. Proximity switches b and c (32, 33) are formed on the side of the member (34).

When the hydraulic pressure is applied to the first inlet 18 to engage the piston curb coupling 17 with the fixed curb coupling 16 and the turning curb coupling 15, the proximity switch c is turned on. When the piston cubic coupling 17 is not engaged with the fixed cubic coupling 16 and the turning cubic coupling 15, the proximity switch b32 is turned on (the state in which the object is detected by the proximity switch) Turn the proximity switch ON).

Therefore, the first thing to check for the tool change is that the proximity switch a 31 is in an OFF state (no object is detected due to a hole), the proximity switch b 32 is in an ON state, and the proximity switch c 33 is in an OFF state. Only when the power is applied to the servo motor 10, the gear shaft 12 is rotated to make a tool change.

5 is a flow chart of the tool exchange operation of the turret tool according to the present invention, after giving a command for selecting a desired tool, checking whether an object is close to the proximity switch a31, and approaching the main motor 20 if it is close. The position is readjusted until the switch a is turned off, that is, until no object is detected due to the hole 21a.

Subsequently, when the hydraulic pressure flows into the second inlet 19, the coupling between the piston curb coupling 17, the fixed curb coupling 16, and the turning curb coupling 15 is released, and the proximity switch c 33 is closed. Check whether the sensing member 34 is detected, and whether the sensing member 34 is detected in the proximity switch b (32).

When the object is detected by the proximity switch b32, the coupling between the cubic couplings 21 is confirmed to be normally released, so the servomotor 10 is driven to rotate the disk 2 to perform a tool change.

Then, when the hydraulic pressure flows into the first inlet 18, the OFF state of the proximity switch b 32 is checked, and when the ON state of the proximity switch c 33 is confirmed, it is confirmed that the tool change is normally completed.

Thereafter, the cutting process is performed by the rotary tool 4, and when the cutting process is completed, the tool change operation as described above is repeated.

As described above, the present invention forms a housing surrounding the outer surface of the gear shaft formed in the turret tool bench to adjust the eccentric amount to reduce the noise generated during tool change, by connecting a timing belt between the motor pulley and the gear shaft In addition, by absorbing the change value of the distance by adjusting the eccentricity of the housing and removing the friction noise caused by the gear contact, the merchandise of the turret tool stand itself can be improved.

In addition, since the eccentricity of the housing can be adjusted, the assembly of the parts can be easily performed, thereby reducing the cost of the product.

Claims (6)

In the turret tool bench provided with the main motor 20 for driving the rotary tools (4, 4a) and the servo motor 10 for generating power for tool change, The shaft 22 connected to the main motor 20 and the coupling 21 to be rotated, the body 1 formed on the outer surface of the shaft 22, and the shaft 22 and the key 25 are coupled to each other. Gearbox 30, a tool drive shaft 28 connected to the gearbox 30 by another key 25a, and rotary tools 4, 4a driven by the tool drive shaft 28. Rotating tool drive unit 40 and configured, A motor pulley 10a formed on the shaft of the servomotor 10, a gear shaft 12 which is powered by the motor pulley 10a and connected by a belt, and the gear shaft 12 are included. And a housing 13 having one or more bearings 14 formed therein, a spur gear 12a formed at one end of the gear shaft 12, and a pivotal coupling receiving rotational force by the spur gears 12a. 15) and a fixed curb coupling (16) for limiting the rotation of the turning cubic coupling, and the rotational cubic coupling (15) and the fixed cubic coupling (16) detached from the interference of the disk (2) Or turret tool bench with a housing for adjusting the amount of eccentricity, characterized in that it comprises a tool exchange drive unit 50 composed of a piston curb coupling 17 for releasing or releasing interference The method of claim 1, The housing 13 can be adjusted in position in the body 1, the turret tool is formed a housing for adjusting the eccentricity, characterized in that the eccentricity between the gear shaft 12 and the turning cubic coupling 15 can be adjusted versus The method of claim 1, A first inlet 18 and a second inlet 19 are formed on the upper and lower surfaces of the piston cubic coupling 17, the housing for adjusting the amount of eccentricity, characterized in that for driving the piston cubic coupling 17 hydraulically Formed turret tool bench The method of claim 1, The belt is a timing belt 11, turret tool stand is formed a housing for adjusting the amount of eccentricity characterized in that no slip phenomenon occurs The method of claim 1, Turret tool having a housing for adjusting the eccentricity is characterized by absorbing the change value of the distance generated by the control of the eccentricity of the housing 13 as the timing belt 11 formed between the motor pulley 10a and the gear shaft 12. versus The method of claim 2, Turret tool bench is formed with a housing for adjusting the amount of eccentricity is characterized in that after adjusting the amount of eccentricity of the housing 13 is fixed to the set strip 36

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