JPH091506A - Cutter spindle driving mechanism of turret working machine - Google Patents

Abstract

PURPOSE: To realize the simplification of power driving constitution and the cost down of a turret working machine by a method wherein the transmission and interruption of power to and from a cutter spindle are performed by means of a mechanical clutch. CONSTITUTION: On the top face of the fixed member 20 of a turret head, the running part 55 of a rotator consisting of a projecting part 55a, a planar part 55c and the like contacting with the rotator 52 is annularly formed. Under the state that the rotator 52 locates on the projecting part 55a, pushing-up energizing force develops in a spring 52 through a shaft 53, resulting in developing a gap between an outer ring part 30a and rollers 30c and consequently interrupting the power transmission. When a cutting driving motor is driven, power is transmitted from a driving gear to the gear 27 and the outer ring part 30a of mechanical clutch of each cutter. In this case, the power is transmitted to only the mechanical clutch, of which a rotator 52 locates on the planar part 55c. The transmission to the mechanical clutch, of which the rotator locates on the projecting part 55a, is interrupted, resulting in bringing only the outer ring part 30a under idling state. The power is transmitted to the mechanical clutch, of which the rotator locates on the planar part 55c so as to rotate a cutter through a shaft 26 and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter driving mechanism in a turret processing machine having several kinds of cutters.

[0002]

2. Description of the Related Art Conventionally, there is a cutter shaft drive mechanism (Japanese Patent Application No. 7-108182) filed by the present applicant. An electromagnetic clutch is used for each cutter as a power transmission means for transmitting the power from the cutter drive motor to the cutter, and the electromagnetic clutch of the cutter at a predetermined position (the cutter positioned on the work material placed on the table) during cutting. Only activated by energization,
The movable part and the fixed part of the electromagnetic clutch are attracted and magnetized, and the power from the cutter driving motor is transmitted. The power of the cutter drive motor is transmitted only to that cutter, and the electromagnetic clutches corresponding to other cutters not related to cutting are de-energized and the power transmission is cut off to rotate only one cutter. It was something that caused it.

[0003]

An electromagnetic clutch is used for the power transmission means of each cutter, and an electric circuit for controlling the electromagnetic clutch is required, resulting in a very expensive structure. An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a cutter shaft drive mechanism having an inexpensive structure.

[0004]

SUMMARY OF THE INVENTION The present invention provides a turret head that supports several types of processing cutters, a frame that supports the turret head, a motor that rotates the turret head, and a cutter drive that drives the cutter. In a turret processing machine in which each cutter is provided with a power transmission motor for transmitting the power of the cutter drive motor to the cutter, the power transmission means supplies power from the cutter drive motor to the cutter. A switching unit that uses a mechanical clutch that transmits and cuts off by moving the outer ring part or the outer ring part, and sets the mechanical clutch to the power transmission state at a predetermined position between the frame and the turret head and to the power cutoff state at other positions. It is achieved by providing.

[0005]

[Operation] When the cutter required for processing is in the specified position,
The outer ring portion and the inner ring portion of the mechanical clutch are forcibly brought into contact with each other at the switching portion, the mechanical clutch is coupled and fixed, and the rotation of the motor shaft is transmitted. At this time, because the other cutter shafts are not in the positions required for machining, the switching parts connected to these cutter shafts push up the inner ring part or outer ring part of the mechanical clutch to release the contact between the outer ring part and the inner ring part. , Cut off power transmission.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 5 is a front view of the turret processing machine, and FIG. 6 is a right side view of FIG. In FIGS. 5 and 6, a table 2 on which a processed material is placed is provided on a base 1, and a Z-axis frame 3 that moves in the front-rear direction (Z direction in FIG. 6) on Z-axis linear guides 4 provided on both sides of the base 1. Is supported. An X-axis frame support member 5 is horizontally fixed to the upper portion of the Z-axis frame 3, and an X-axis linear guide 6 fixed to the X-axis frame support member 5 moves in the left-right direction (X direction in FIG. 5). A frame 7 is supported. X-axis frame 7
A Y-axis frame 9 that moves in the up-down direction (Y direction in FIG. 6) is supported by the Y-axis linear guide 8, whereby the turret head 10 supported by the Y-axis frame 9 moves in the X and Y directions. , Can be moved in the Z direction. The turret head 10 is rotated by a turret head rotating motor 11 provided on the Y-axis frame 9, and as shown in FIG. 2, a gear 12 of the motor 11 and a gear 13 fixed to the lower end of the turret head 10 mesh with each other. The rotation of the motor 11 rotates the entire turret head 10.

The turret head 10 is provided with several types (four types in the embodiment) of cutters 14 to 17. The Z-axis frame 3, the X-axis frame 7, and the Y-axis frame 9
Are moved by motors (not shown).

Next, the cutter shaft drive mechanism will be described with reference to FIGS. 1 and 2. 1 is a vertical sectional view of the turret head, and FIG. 2 is a sectional view taken along the line AA of FIG. Motor shaft 1 of cutter driving motor 18 provided in Y-axis frame 9
9 is rotatably supported by a bearing 21 of a fixed member 20 fixed on the Y-axis frame 9 and a bearing 22 in the Y-axis frame 9, and a drive gear 23 is fixed to the upper end. Each cutter 14
1 to 17 are provided with power transmission means for transmitting power from the cutter driving motor 18 to each of the cutters 14 to 17.

From here, description will be made on the premise that the power transmission means having the same structure is configured for each cutter. The first gear 27 is meshed with the drive gear 23 so that the first gear 2
A mechanical clutch 30 is fixed in the hollow portion of 7.
The upper end of the first shaft 26 is supported by the bearing 24 above the turret head 10, and the lower end thereof penetrates the mechanical clutch 30 and is supported by the hollow portion of the first gear 27 with a clearance. A second shaft 31 is erected in parallel with the first shaft 26 and rotatably by bearings 28 and 29, and a second gear 32 provided above the first shaft 26 and a second shaft 31. A third gear 34 provided above the gear meshes with it. A bevel gear 37 is provided below the second shaft 31, and a bevel gear 38 that meshes with the bevel gear 37 is provided.
Is fixed to one end of a cutter shaft 40 rotatably supported by a bearing 39. The cutter shaft 40 is provided in a cutter mounting portion 10a formed so as to project from the side surface of the turret head 10. Further, in order to suppress the movement in the axial direction, a bearing 41 abutting against the step portion 40a of the cutter shaft 40 is attached to a nut 42.
And the bearing holder 43. Cutter 14-17
Is a collet chuck 4 provided on each cutter shaft 40.
It is provided detachably by 4.

FIG. 8 is an enlarged view of FIG. 6 showing the positional relationship between the turret head and the convex portions. As shown in FIG.
Various cutters 14 to 17 are provided on the outer circumference of the turret head 10.
Convex portions 45 to 48 for discriminating
A magnetic switch 49 which serves as a detector for detecting the convex portions 45 to 48 located below the turret head 10 is fixed to the shaft frame 9. As shown in FIG. 8, each of the convex portions 45 to 48 is provided on the turret head 10 while being shifted by the interval L, and the magnetic switch 49 detects the difference in the interval L.
It is determined which of the protrusions 45 to 48 is the protrusion, that is, the type of the cutters 14 to 17. When mounting the cutter, for example, the cutter mounting portion 10a corresponding to the convex portion 45 is determined in advance for the cutter 14. In the present embodiment, the convex portions 45 to 48 correspond to the cutters 14 to 17, respectively.

Next, the periphery of the mechanical clutch will be described in detail with reference to FIGS. 3 and 4 are enlarged views around the mechanical clutch. FIG. 3 shows a state in which the outer ring portion and the inner ring portion are connected and fixed, and FIG. 4 shows a state in which the outer ring portion and the inner ring portion are separated from each other. The mechanical clutch 30 includes an outer ring portion 30a and a truncated cone-shaped inner ring portion 30 provided in a truncated cone-shaped hollow portion formed in the outer ring portion 30a.
b, a roller 30c fixed to the outer circumference of the inner ring portion 30b and contactable with the inner surface of the outer ring portion 30a. Outer ring part 3
Either 0a or the inner ring portion 30b is fixed, and the other is slightly movable up and down. In this embodiment, the inner ring portion 30b is fixed and the outer ring portion 30a is movable. Normally, the outer ring portion 30a and the inner ring portion 30b are held at a position where the upper surfaces of the outer ring portion 30a and the inner ring portion 30b coincide with each other.
0a and the inner ring portion 30b are connected and fixed by a roller 30c. When the outer ring portion 30a is pushed up, as shown in FIG. 4, a clearance is generated between the outer ring portion 30a and the roller 30c, the fixed connection between the outer ring portion 30a and the inner ring portion 30b is released, and power is transferred from the outer ring portion 30a to the inner ring portion 30b. Is not transmitted, and only the outer ring portion 30a is rotated into a idling state.

The first gear 27 is supported via a bearing 50 by a sliding body 51 provided on the protrusions 10b, 10b in the turret head 10 so as to be vertically slidable. Rotating body 52
Is supported by a shaft 53, the shaft 53 is located below the sliding body 51, and is urged downward by a spring 54 provided between the sliding body 51 and the shaft 53.

FIG. 7 is a perspective view of the fixing member. As shown in FIG. 7, on the upper surface of the fixed member 20, a rotating body running portion 55 serving as a guide portion, which is composed of a convex portion 55a with which the rotating body 52 contacts, an inclined portion 55b, and a flat surface portion 55c, is formed in an annular shape. 55
a plane portion 55c through an inclined portion 55b that gradually decreases from a.
And then returns to the convex portion 55a via the inclined portion 55b which gradually rises from here. The flat surface portion 55c is formed at a position where it comes into contact with the rotary body 52 corresponding to the cutter when the cutter faces downward. The switching unit includes the rotating body traveling unit 55, the first gear 27, the rotating body 52, and the sliding body 5.
1 and the spring 54.

When the rotating body 52 is located on the flat surface 55c, the spring 54 has no biasing force, and the sliding body 51 is supported by the projections 10b and 10b. The gear 27 and the outer ring portion 30a of the mechanical clutch 30 are lowered. Therefore, the outer ring portion 30
The a and the inner ring portion 30b are in contact with each other, and the power from the outer ring portion 30a is transmitted to the inner ring portion 30b. On the contrary, when the rotating body 52 is located on the convex portion 55a, a biasing force that pushes up the spring 54 via the shaft 53 is generated, and the sliding body 51, the bearing 50, the first gear 27,
The outer ring portion 30a of the mechanical clutch 30 is pushed up. Therefore, a clearance is generated between the outer ring portion 30a and the roller 30c, and the power transmission from the outer ring portion 30a to the inner ring portion 30b is blocked.

In the above structure, when cutting the processed material into various processed shapes with the cutter 14, for example, first, the cutter 14 is used.
The turret head 10 is rotated through the gears 12 and 13 by the turret head rotation motor 11 so that the tip of the turret head faces downward as shown in FIG.

When the turret head 10 rotates, the rotating body 52 runs on the rotating body running portion 55. Assuming that the rotary body 52 travels from above the convex portion 55a, when the rotary body 52 moves from the convex portion 55a to the inclined portion 55b that is inclined downward, the positions of the rotary body 52 and the shaft 53 are gradually lowered by the biasing force of the spring 54. At this time, the sliding body 51 is still held in the same state when the sliding body 51 is positioned at the convex portion 55a of the rotating body 52 by the urging force of the spring 54 and the shaft 53. Further, the rotating body 52 descends the inclined portion 55b and reaches the flat surface portion 55c, that is,
When the cutter 14 reaches right below, the biasing force of the spring 54 disappears, and the spring 54 cannot hold the position of the sliding body 51.
supported on b, 10b. Along with this, the bearing 50, the first gear 27, the first shaft 26, and the outer ring portion 30a of the mechanical clutch 30 also lower. As a result, the outer ring portion 30a and the inner ring portion 30b of the mechanical clutch 30 are brought into contact with each other via the roller 30c, and the power from the outer ring portion 30a is transmitted to the inner ring portion 30b. At this time, since the rotary body 52 corresponding to the other cutter is located on the convex portion 55a and the sliding body 51 is pushed up by the urging force of the spring 54,
The outer ring portion 30a of the mechanical clutch 30 is also pushed upward (direction B in FIG. 4). Therefore, the outer ring portion 30a is the roller 3
The first shaft 26 does not rotate because it loses the function of transmitting the rotation to the inner ring portion 30b by moving away from 0c.

When the cutter 14 reaches the lower side, the magnetic switch 49 detects the convex portion 45 which is judged to be the cutter 14, and stops the rotation motor 11 by the output signal of the magnetic switch 49.

Next, when the cutter driving motor 18 is driven, the motor shaft 19 rotates, and power is transmitted from the drive gear 23 to the cutters 14 to 17, the first gear 27, and the outer ring portion 30a of the mechanical clutch 30. It From here, the rotating body 52
The power is transmitted only to the mechanical clutch 30 located on the plane portion 55c, and the mechanical clutch 30 located on the convex portion 55a is disconnected from the power transmission to the inner ring portion 30b and the motor shaft 19 and the outer ring. Only the portion 30a becomes idle.
In the mechanical clutch 30 located on the flat surface portion 55c,
Power is transmitted from the outer ring portion 30a to the inner ring portion 30b, and further through the first shaft 26, the second gear 32, the third gear 34, the second shaft 31, the bevel gear 37, the bevel gear 38, and the cutter shaft 40. The cutter 14 rotates.

Next, the Z-axis frame 3, the X-axis frame 7,
While the turret head 10 is moved in the X, Y, and Z directions by the Y-axis frame 9, the work material is cut into an arbitrary shape by the cutter 14.

When the turret head 10 is rotated in order to cut with another cutter after finishing the cutting process with the cutter 14, the rotary body 5 corresponding to the cutter 14 located immediately below is rotated.
2 moves from the flat surface portion 55c to the inclined portion 55b that is inclined upward. At the same time, the rotating body 52 and the shaft 53 gradually move upward, whereby the spring 54 is gradually compressed and an urging force is generated, and the sliding body 51, the bearing 50, the first gear 27,
The outer ring portion 30a of the mechanical clutch 30 is pushed up to
Power transmission from 0a to the inner ring portion 30b is cut off. When the rotating body 52 reaches the recess 55a, the shaft 53 contacts the lower surface of the sliding body 51, and the position of the sliding body 51 is held.

[0021]

According to the present invention, by changing the transmission and interruption of power to the cutter shaft to a mechanical clutch, the cutter shaft drive mechanism is less expensive than conventional electromagnetic clutches and electric circuits for controlling electromagnetic clutches. Could be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a turret head showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged view of the periphery of the mechanical clutch showing a state where the outer ring portion and the inner ring portion are connected and fixed.

FIG. 4 is an enlarged view of the periphery of the mechanical clutch showing a state where the outer ring portion and the inner ring portion are separated from each other.

FIG. 5 is a front view of a turret processing machine.

FIG. 6 is a right side view of FIG.

FIG. 7 is a perspective view of a fixing member.

FIG. 8 is a diagram showing the positional relationship between the turret head and the convex portion in the enlarged view of FIG.

[Explanation of symbols]

10 is a turret head, 10b is a protrusion, 11 is a turret head rotation motor, 14 to 17 are cutters, 18
Is a cutter driving motor, 20 is a fixed member, 23 is a drive gear, 26 is a first shaft, 27 is a first gear 27, 30 is a mechanical clutch, 30a is an outer ring portion, 30b is an inner ring portion, 30c.
Is a roller, 31 is a second shaft, 32 is a second gear, 34 is a third gear, 37 and 38 are bevel gears, 40 is a cutter shaft, 51 is a sliding body, 52 is a rotating body, 53 is a shaft, 54 Is a spring, 55 is a rotating body running portion, 55a is a convex portion, 55b
Is an inclined portion and 55c is a flat portion.

Claims (3)

[Claims] 1. A turret head that supports several types of machining cutters is provided, and a frame that supports the turret head is provided with a motor that rotates the turret head and a cutter drive motor that drives the cutter, and the cutter drive is provided. In a turret processing machine in which each cutter is provided with power transmission means for transmitting the power of the motor for the cutter to the cutter, the power transmission means moves the power from the cutter driving motor to the cutter between the inner ring portion and the outer ring portion. A mechanical clutch that transmits and cuts off by transmitting the mechanical clutch is provided, and a switching unit is provided between the frame and the turret head to set the mechanical clutch to the power transmission state at a predetermined position and to cut off the power at other positions. A cutter shaft drive mechanism for a turret processing machine. 2. The power transmission means comprises a drive gear fixed to a motor shaft of a motor, and a first gear which is constantly meshed with the drive gear.
Gear, a mechanical clutch having an outer ring portion mounted inside the first gear, a first shaft having one end fixed to the inner ring portion of the mechanical clutch, and a second gear fixed to the first shaft. A third gear that constantly meshes with the second gear, a rotatable second shaft that fixes the third gear and the bevel gear A, and a cutter shaft that fixes the bevel gear B that constantly meshes with the bevel gear A. The cutter shaft drive mechanism for a turret processing machine according to claim 1, wherein: 3. The switching unit is composed of a rotating body running section provided on the upper portion of the frame, the rotating body running section having an annular convex section and a flat section, and a rotating body running on the rotating body running section in the turret head. The sliding body is attached to the first gear through the bearing, and the outer ring portion is moved up and down through the sliding body and the first gear by the vertical movement of the rotating body by the convex portion and the flat surface portion. The cutter shaft drive mechanism of the turret processing machine according to claim 1, wherein transmission and interruption are performed.