JPH06155202A - Cutting tool unit for punch press - Google Patents

Abstract

(57) [Summary] [Purpose] The motor mechanism is downsized, the mounting space is reduced, and handling is easy. [Structure] A tool guide 17 is provided so as to be movable up and down with respect to the inner circumference of the turret, a cylindrical case 19 is integrally provided at an upper end of the tool guide 17, and an upper end of the cylindrical case 19 is integrally provided. A tool head 13 is provided, and the tool guide 17 and the cylinder case are provided.
A tool shaft 21 that is rotatable inside the tool 19 and the tool head 13 and holds the cutting tool detachably at the lower end is provided between the cylindrical case 19 and the tool shaft 21 and rotates to the tool shaft 21. Is provided with a motor mechanism 23 for transmitting the electric power, and a refrigerant passage is provided on the outer circumference of the cylindrical case 19 so that the end of the refrigerant passage is directed to the tool provided at the lower end of the tool guide 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool unit for a punch press, which is equipped with a turret of a turret punch press and a cutting tool such as an end mill, a reamer, and a drill, which enables contour cutting and punching. .

[0002]

2. Description of the Related Art Conventionally, a turret of a hydraulic turret punch press is provided with a cutting tool unit for holding a cutting tool such as an end mill, a reamer, a drill, etc., in place of a die, to perform contour cutting, drilling, etc. I have something to do. At this time, by lowering the ram cylinder in the punch press, the tool head of the cutting tool unit is pushed down through the striker, the tool shaft is rotated and lowered, and the work is contour cut, punched, etc. Is to do.

[0003]

By the way, such a cutting tool unit for punch press requires a rotation transmission mechanism (motor mechanism) for rotating the tool,
If such a motor mechanism is separately installed, it becomes large in size and the mounting space becomes large.

In order to solve the above problems, an object of the present invention is to provide a cutting tool unit for a punch press in which the rotation transmission mechanism is downsized, the mounting space is reduced, and the handling is easy. is there.

[0005]

In order to achieve the above object, the present invention is a cutting tool unit mounted on a turret of a turret punch press, and is provided so as to be vertically movable relative to the inner circumference of the turret. A tool guide, a cylindrical case provided at the upper end of the tool guide, a tool head provided at the upper end of the cylindrical case, and a cutting tool at the lower end rotatably provided between the tool guide. A cutting tool unit for a punch press, comprising: a tool shaft that removably holds a tool, and a rotation transmission mechanism that is provided between the cylindrical case and the tool shaft and that transmits rotation to the tool shaft. is there.

Further, according to one embodiment of the present invention, the cylindrical case is provided with a refrigerant passage on its outer circumference, and the end of the refrigerant passage is directed to the tool provided at the lower end of the tool guide.

[0007]

By using the cutting tool unit for punch press of the present invention, a tool guide is provided so as to be vertically movable with respect to the inner circumference of the turret, and a cylindrical case is provided at the upper end of the tool guide. -A tool head is provided at the upper end of the tool, a tool shaft is provided between the tool guide and the tool guide for freely holding the cutting tool in a removable manner, and the tool shaft is provided between the cylindrical case and the tool shaft. A rotation transmission mechanism that transmits rotation to
In addition, by providing a coolant passage on the outer circumference of the cylindrical case and directing the end of this coolant passage to the tool provided at the lower end of the tool guide, the rotation transmission mechanism is downsized and the mounting space is reduced.
Space is reduced and handling is easy.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 is a schematic diagram of a hydraulic turret punch press suitable for implementing the present invention. In the figure, an upper turret 3 and a lower turret 5 are rotatably mounted on a frame 1 of a hydraulic turret punch press. In the upper turret 3, a cutting tool unit 7 holding a cutting tool such as an end mill, a reamer, and a drill is mounted instead of the mold.

By lowering the ram cylinder 9 in the frame 1, the striker 11 pushes down the tool head 13 of the cutting tool 7, and the rotary drive mechanism 23 shown in FIG. , The work W is subjected to contour cutting, drilling and the like. In addition,
The clamp 15 holds the work W and positions it so as to be axially movable in the front-back direction and the left-right direction (perpendicular to the paper surface in the drawing).

FIG. 1 shows a front sectional view of an embodiment of the present invention. In the drawing, the cutting tool unit 7 is mainly composed of a tool guide 17 which is vertically slidable with respect to the inner circumference of the upper turret 3, a tube case 19 provided at an upper end of the tool guide 17, and a tube case 19. The tool head 13 provided on the upper end of the case 19, the tool guide 17 and the tool head 13
And a tool shaft 21 that is rotatably provided between the cylinder case 19 and the tool shaft 21 and has a lower end that detachably holds a cutting tool (not shown), and is rotated by the tool shaft 21. A rotation transmission mechanism for transmitting power, in this embodiment, the motor mechanism 2
3 and 3.

At the upper end of the tool guide 17, an outer flange 2 is provided.
5 is formed, the lower surface of the outer flange 25 is supported by the upper turret 3 via the lifter spring 27, and the entire cutting tool unit 7 is held vertically movable with respect to the upper turret 3.

The outer flange 25 of the tool guide 17
An upper case 19 and a tool head 13 are integrally mounted on the upper case 19. Bearings 29, 29 are mounted on the tool head 13 and the tool guide 17, respectively, and rotatably support the tool shaft 21. The bearing 29 is preferably capable of receiving loads in both radial and thrust directions. A chuck 31 for holding a tool such as an end mill is attached to the lower end of the tool shaft 21.

Further, the rotary drive mechanism 23 includes a tool shaft 21.
It is composed of a rotor 33 fixed slightly above the middle of the above, a fixed coil 35 housed inside the tool head 13, the cylindrical case 19 and the outer flange 25 of the tool guide 17. Therefore, the tool guide 17 also serves as the motor flange of the rotary drive mechanism 23.

Further, an oil mist hole 37 is formed in the center of the tool head 13 for receiving the oil mist which ejects the cutting oil, which is the refrigerant from the striker 11 of the turret punch press, in the form of mist. It communicates with an oil mist passage 39 formed through the center of the tool shaft 21.

The oil mist hole 3 of the tool head 13
7 is provided with an oil mist passage 41 which is embedded in a cylindrical case 19 with a copper pipe or an aluminum pipe to form a spiral groove for cooling the rotary drive mechanism 23.

The oil mist passage 41 communicates with the oil mist passage 43 of the tool guide 17, and the oil mist passage 43 is connected to the ejection nozzle 45 provided at the lower end of the tool guide 19 to allow the oil of the tool shaft 21 to be connected. Along with the ejection nozzle 49 connected to the end of the mist passage 39, it is directed to the tool and has a cooling effect.

An oil seal 47 is provided below the bearing mounting seat 17A in the tool guide 17 to prevent the lubricating oil from flowing out. Although electrical wiring to the main cutting tool unit 7 is not shown in the drawing, wiring is provided on the upper turret 3 to provide contacts, and the main cutting tool unit 7 is rotated directly below the ram cylinder 9 and the striker 11 by rotation of the upper turret 3. When it is located at the machining position, the contact may be connectable with the contact on the frame 1 side.

With the above construction, the fixed coil 35 is excited to rotate the tool shaft 21 corresponding to the output side rotor shaft of the motor mechanism 23. When the striker 11 of the turret punch press is lowered, the entire cutting tool unit 7 is pushed and lowered, the tool reaches the work W, and the cutting process is performed.

At this time, the hydraulic ram cylinder 9 capable of controlling the position and speed, which is the drive source of the turret punch press,
When the tool head 13 is moved up and down with a stroke corresponding to the length dimension of a tool (not shown), it can be used evenly over the entire length of the tool, and its life is extended, which is extremely effective.

The present invention is not limited to the above embodiment, but can be carried out in other modes by making appropriate design changes. For example, the cutting tool unit 7 can be replaced by the upper turret. 3, the cutting tool unit 7 may be mounted upside down on the lower turret 5.

At this time, it is possible to remove the burr generated on the back of the work W by punching. Further, the scrap support hole and the cylinder may be provided in parallel on the disk support that supports the lower side of the lower turret 5, and the processing position may be switched to. Alternatively, the cutting tool unit 7 may be attached to the position of the repositioning cylinder.

[0023]

As is apparent from the above description, the cutting tool unit for punch press of the present invention is provided with a tool guide which is movable up and down with respect to the inner circumference of the turret, and is integrated with the upper end of the tool guide. A cylindrical case is provided, and a tool head is integrally provided at the upper end of the cylindrical case, and the cutting tool can be freely attached to and detached from the lower end of the tool guide, the cylindrical case and the tool head. A tool shaft for holding is provided, and the cylinder case
A motor mechanism is provided between the tool shaft and the tool shaft to transmit rotation to the tool shaft, and a refrigerant passage is provided on the outer periphery of the cylindrical case. The end of the refrigerant passage is provided at the lower end of the tool guide. By pointing the tool toward a different tool, the problems of the prior art are effectively solved, the motor mechanism is downsized, the mounting space is reduced, and the handling is easy.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a hydraulic turret punch press suitable for implementing the present invention.

[Explanation of symbols]

 7 Cutting Tool Unit 11 Striker 13 Tool Head 17 Tool Guide 19 Tube Case 21 Tool Axis 23 Motor Mechanism 45,49 Jet Nozzle

Claims (2)

[Claims] 1. A cutting tool unit mounted on a turret of a turret punch press, wherein a tool guide is provided so as to be movable up and down with respect to the inner circumference of the turret, and a tube case provided at the upper end of the tool guide. And a tool head provided on the upper end of the tubular case, a tool shaft rotatably provided between the tool guide and the tool head for detachably holding a cutting tool at the lower end, and the tubular case. A cutting tool unit for a punch press, comprising: a rotation transmission mechanism that is provided between the tool shaft and the tool shaft and that transmits rotation to the tool shaft. 2. The cutting tool unit for punch press according to claim 1, wherein the cylindrical case has a refrigerant passage on an outer periphery thereof and directs an end of the refrigerant passage to a tool provided at a lower end of the tool guide. A cutting tool unit for punch presses.