JPS64163B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a turret head is attached to a head holder supported by a machine tool main body equipped with a three-axis orthogonal coordinate type movement mechanism, and a hole is drilled in a workpiece on a set table in front by moving the main body. This invention relates to a head exchange device for a turret type machine tool that performs machining.

As a conventional device of this type, according to Japanese Patent Publication No. 52-6789, a head magazine for supporting a plurality of turret heads is arranged on one side of a machine tool, and a moving table for transporting the turret heads is provided between the machine tool and the magazine. However, in this method, a moving table is provided between the machine tool and the magazine, which increases the size of the turret head exchange device, and requires manual movement of the moving table, which places a burden on the operator. It's inconvenient.

In order to eliminate such inconveniences, the present invention aims to provide a head exchanger that utilizes the movement of the machine tool body that supports the head holder to enable head exchange without using a moving table or the like for transporting the turret head. The purpose of this machine is to attach the turret head to a head holder supported by a machine tool body equipped with a 3-axis orthogonal coordinate movement mechanism, and to operate the body to drill a hole in a workpiece on a set table in front of it. The turret type machine tool has a turret head removably attached to one side in the lateral direction of the head holder, and a plurality of radial support arms each removably gripping the turret head on one side in the lateral direction of the arrangement part of the main body. A head magazine is arranged, and any one of these support arms can be freely selected to a replacement position facing within the lateral movement locus of the holder by means of an index mechanism provided in the magazine, and the lateral movement of the holder to one side in the lateral direction is made possible. Accordingly, the turret head can be exchanged between the holder and the support arm selected in the exchange position.

The present invention will be explained below with reference to illustrated embodiments.
Referring to FIGS. 1 and 2, 1 is a machine base, 2 is a work set table provided at the front position on the machine base 1, and 3
indicates a machine tool main body equipped with a three-axis orthogonal coordinate type moving mechanism provided at a rear position, and the main body 3 has an X-axis in the direction of advancing and retreating toward the setting table 2, a Y-axis in the horizontal direction, and a vertical direction. A movable frame 4 is provided which is movable in the three axes of the orthogonal coordinate system, with Z axis being the Z axis, and a turret head 7 having a plurality of spindles 6 around the periphery is attached to the movable frame 4 via a head holder 5. To explain this in more detail, in the illustrated case, the main body 3 is a guide rail 8a on the machine base 1.
The movable frame 4 is provided with a table 8 that is slidable in the Y-axis direction along a guide rail 9a on the table 8, and a column 9 that is slidable in the X-axis direction along a guide rail 9a on the table 8. It is configured to be slidable in the Z-axis direction along a guide rail 4a, and the movable frame 4, the table 8, and the column 9 are each guided by separate drive sources 10, 11, and 12 each comprising a servo motor. The movable frame 4 is connected via the screws 10a, 11a, and 12a, and the movable frame 4 is moved in the Z-axis direction by the operation of the Z-axis drive source 10 connected thereto, and the Y-axis drive connected to the table 8. Movement in the Y-axis direction via the table 8 due to the operation of the power source 11 and movement in the X-axis direction via the column 9 due to the operation of the X-axis drive source 12 connected to the column 9 are given. I made it possible to do so. The head holder 5 also has an index shaft 13 in the Y-axis direction within a machine frame 5a fixed to the movable frame 4, and a drive shaft 14 inserted into the index shaft 13, as shown in FIGS. 3 and 4. The index shaft 13 is connected to a drive source 16 such as a servo motor through a worm gear mechanism 15, and the drive shaft 14 is connected to a spindle motor 18 through a gear train 17. An input shaft 20 connected to a plurality of spindles 6 via respective bevel gears 19 is installed on the side surface of the turret head 7, and when the index shaft 13 of the turret head 7 is attached to a mounting seat (described later), the input shaft 20 is connected to the turret head 7. The drive shaft 14 is non-rotatably engaged so that each spindle 6 is provided with rotation by the spindle motor 18, and the turret head 7 is provided with index rotation by the drive source 16, so that each spindle 6 is provided with index rotation by the drive source 16.
Either one of them is oriented in the X-axis direction.

According to the present invention, the turret head 7 is removably attached to one side in the lateral direction of the head holder 5, that is, one side in the Y-axis direction, and
A head magazine 22 having a plurality of radial support arms 21 that detachably grip the turret heads 7 in the axial direction is arranged, and any one of these support arms 21 is indexed by an index mechanism 23 provided in the magazine 22. The exchange position 24 facing the lateral movement locus of the holder 5 is freely selectable, and the holder 5
The turret head 7 can be freely exchanged between the holder 5 and the support arm 21 selected at the exchange position 24 by lateral movement to one side in the Y-axis direction.
To explain this in detail based on the illustrated one, the head magazine 22 is mounted on a pedestal 25 provided on one side of the machine tool main body 3 in the Y-axis direction on the machine stand 1, as shown in FIGS. 5 and 6. An index shaft 23a is provided approximately parallel to the Y-axis, and a gear train 2 is connected to the index shaft 23a.
Drive source 2 such as a servo motor connected via 3b
3c, and a plurality of radially extending support arms 21 fixed to the index shaft 23a, each of the support arms 21
The turret head 7 is detachably gripped by a clamp portion 21a provided at the tip of the support arm 21 at a protrusion 26 provided on the opposite side of the input shaft 20, and any one of these support arms 21 is moved by the drive source 23c. It is now possible to selectively move to exchange position 24.

Also, the index shaft 13 of the head holder 5
The turret head 7 is provided with a mounting seat provided with a positioning pin 27 and a clamp member 28 on the flange of the shaft end, and the turret head 7 is mounted on the mounting seat.
can be removably positioned and fixed in the Y-axis direction.

In the illustrated example, each support arm 21 is
The index axis 2 is tilted outward in the axial direction, and
The axis of 3a is tilted backward in the X-axis direction,
At the exchange position 24, the input shaft 20 of the turret head 7 on the support arm 21 is oriented in the Y-axis direction, but at other positions, the turret head 7 is moved backward so that the movement of the machine tool body 3 is not hindered. did.

Next, its operation will be explained.

The used turret head 7 of a turret type machine tool is moved laterally in the Y-axis direction toward the replacement position 24 by the operation of the Y-axis drive source 11 while attached to the head holder 5. The protrusion 2 of the head 7 is attached to the clamp portion 21a of the empty support arm 21 waiting at the exchange position 24.
6 to grip the head 7, then release the clamp of the clamp member 28 of the head holder 7, move the holder 7 slightly away from the exchange position 24, and activate the drive source 23c of the head magazine 22. After selectively moving one of the turret heads 7 stored in the magazine 22 to the exchange position 24, the head holder 7 is advanced to the exchange position 24, and the turret head 7 is clamped by the clamp member 28, The clamp of the clamp portion 21a of the support arm 21 is released, and the head holder 5 is returned to the old position by the Y-axis drive source 11, and is ready for the next machining operation.

As described above, according to the present invention, a head magazine is provided which has a plurality of support arms for detachably holding turret heads on one side in the lateral direction of the arrangement part of a machine tool main body equipped with a three-axis orthogonal coordinate type movement mechanism. , any one of these support arms can be selected by an index mechanism to a replacement position facing the lateral movement locus of the head holder on the main body, and the holder and the replacement position can be selected by the lateral movement of the head holder. The turret head can be exchanged between the support arm and the turret head, and the turret head can be exchanged without using a separate conveyance device.
Not only can the head replacement device be made smaller, but since the replacement work is performed using the movement mechanism of the main body, the work efficiency is improved and the burden on the worker can be reduced.

[Brief explanation of drawings]

Fig. 1 is a side view of an example of the embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a plan view taken along the - line of Fig. 1, Fig. 4 is a side view taken along the - line of Fig. FIG. 6 is a front view of the head magazine as seen from the index axis direction, and FIG. 6 is a partially cutaway side view thereof. 2... Work setting table, 3... Machine tool body, 5
...Head holder, 7...Turret head, 2
1...Support arm, 22...Head magazine, 2
3... Index mechanism, 24... Exchange position.

Claims (1)

[Claims] 1. A turret-type machine in which a turret head is attached to a head holder supported by a machine tool body equipped with a 3-axis orthogonal coordinate type movement mechanism, and the operation of the body rotates the drilling process into a workpiece on a set table in front. In the machine, a turret head is removably attached to one side in the lateral direction of the head holder, and a head magazine having a plurality of radial support arms for removably gripping the turret heads is arranged on one side in the lateral direction of the arrangement part of the main body. do,
Any one of these support arms can be freely selected to an exchange position facing the lateral movement locus of the holder by an index mechanism provided in the magazine, and by lateral movement of the holder to one side in the lateral direction, the holder is moved to the exchange position. 1. A head exchange device for a turret type machine tool, characterized in that the turret head can be freely exchanged between the support arm selected by the support arm.