JPH01159149A - Nc type cutting work device - Google Patents

Abstract

PURPOSE:To increase the tool accommodating faculty without increasing the dimension of a column side and permit a work having a small number of used tools to be handled on the column side by replacing the tool magazines between the column and a magazine accommodating device outside the column. CONSTITUTION:When a magazine 7 is mounted onto a column 2, a preparatory tool magazine 17 is accommodated into one rack 24 of a magazine accommodating device 10, and no tool magazine is accommodated into the other rack 25. Therefore, when a tool which is not stored in the tool magazine 7 mounted onto the column 2 at present is necessary, the tool magazine 7 mounted onto the column 2 is transferred to the rack 25, and the preparatory tool magazine 17 is transferred to the column 2 side from the rack 24. After the toll magazine 17 sent to the column 2 side is locked, the column 2 is transferred and lock is released, and then the replacement of the tool magazines 7 and 17 between the column 2 and the magazine accommodating device 10 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an NC type cutting device equipped with an automatic tool changer.

Conventional technology and its problems In machine tools equipped with automatic tool changers.

Increasing the number of tools used is extremely effective in improving machining efficiency i, and for this reason, recent machine tools tend to have an increased number of stored tools. In this case, increasing the tool storage capacity means increasing the size of the tool magazine itself and increasing the number of tool storage holes, and therefore, taking into consideration the rigidity of the column, etc., it is necessary to increase the size of the entire machine.

On the other hand, if an attempt is made to process a workpiece that requires a relatively small number of tools by changing the workpiece, etc., the above structure will result in excessive equipment, and it will take time to select the necessary tools.

In this way, from the viewpoint of machine versatility, if the work requires a relatively small number of tools, the tool magazine attached to the column will be sufficient; conversely, if the work requires a large number of tools, It is desirable to have a structure in which the actual number of stored tools can be increased by replacing the tool magazine itself.

In order to meet the above demands, the present invention provides a magazine exchange function between the column and a magazine storage device outside the column, in addition to an automatic tool exchange function between the tool magazine attached to the column and the machining head. The present invention provides a device equipped with the following.

Means for Solving the Problems The NC-type cutting apparatus of the present invention is equipped with an automatic tool changer for exchanging tools between a machining head and a tool magazine provided in a column. The apparatus is characterized in that a magazine storage device for storing a spare tool magazine is provided near the column, and a magazine exchange device is provided for exchanging tool magazines between the column and the magazine storage device.

Operation According to this structure, as long as the required tool is in the tool magazine attached to the column, the automatic tool changer is used in a conventional manner to transfer the tool between the tool magazine and the machining head. Perform the swap. On the other hand, if the required tool is not in the tool magazine attached to the column, the tool magazine is exchanged between the column and the magazine storage device, and then the tool is exchanged in the same manner as above. This is K.

Embodiment FIGS. 1 to 4 are explanatory views of the overall configuration of an embodiment of the present invention, and illustrate a cutting device having a turret shop spindle head as a processing head.

In FIG. 1, 1 is an index table as a work table on which a work W is mounted, 2 is a column, and the column 2 can slide on a bed 3 in the x and z directions. A slide 6 equipped with a turret-type spindle head 4 and a retractable arm (hereinafter referred to as ATC arm) 5 of an automatic tool changer 1i (ATC) is attached to the column 2, and the slide 6 is attached to the column 2. In the Y direction along 2! ＋I can get off. In other words, the machine as a whole has degrees of freedom in three orthogonal axes in the X, Y, and Z directions.A cassette-type tool magazine 7 is removably attached to the side of the column 2, as is well known. Tools T are exchanged between the spindle head 4 and the tool magazine 7 by the ATC arm 5.

That is, the spindle head 4 includes two spindles 8 and 9 that are perpendicular to each other, and is configured to index and rotate around a fine point that bisects the angle formed by the spindles 8 and 9. ing. Therefore, as shown in FIGS. 1 and 2, for example, when one spindle 8 is directly facing the 7-w, the other spindle 9 is parallel to the center of rotation of the ATC arm 5, and in this state. The tool T is exchanged with the tool magazine 7. This means that while machining one spindle 8, the tool T is exchanged between the other spindle 9 and the tool magazine 7 at the same time.

IO is a magazine storage device located adjacent to the bed 3, and this magazine storage device fixo stores a spare tool magazine 17 (one in this embodiment) in an upright state. Column 2 and magazine storage device 10
The tool magazine 7.17 is exchanged between the two.

The tool magazine 7.17 has a rectangular base plate 11, as shown in FIGS. 5 and 6.

The chain sprocket 12 and chain wheel 13 are rotatably supported by a base plate 11, and an endless chain 14 is wound between the chain sprocket 12 and the chain wheel 13. The chain 14 has a large number of bots 1 as tool storage holes.
5 is formed, and a tool T is stored in this bot 15 (see FIGS. 1 and 4). The base plate ll has a pair of long and short guide rods 16 and 18 disposed on the side mK of the column 2. It is guided and supported in a slidable manner and is normally locked and positioned in a non-slidable manner by a locking device not shown. and bass play)
In the positioning state of 11, as shown in FIG.
meshes with the drive gear 20 on the column 2 side, and by rotating the chain 14 via both gears 19, 20, the required predetermined tool is indexed to the selected position.

Reference numeral 21 denotes a U-shaped engagement member provided on the end surface of the base plate 11. When carrying the tool magazine 7 into the magazine storage device 10 as shown in FIG.
A hook 29, which will be described later, engages with it.

Next, details of the magazine storage device [10] and the magazine exchange device will be explained.

As shown in FIGS. 1 and 3, the magazine storage device @10 is mainly composed of a slide base 22 equipped with two magazine storage areas K 1 e E *, and this slide base 22 is connected to a shift cylinder 23. can be moved by a predetermined amount in the X-axis direction. Magazine storage area El@E on slide base 22! As shown in FIGS. 7 and 8, the tool magazine 7.
Storage racks (hereinafter simply referred to as racks) 24 and 25 for storing the storage devices 17 are provided respectively (not shown in FIG. 1).

A pair of long and short guide rods 2 are installed above and below the racks 24 and 25.
6.28 are fixed and these guide rods 26
．． 28 is set parallel to and at the same height as the guide rod 16.18 on the column 2 side. In other words, by moving the column 2 using the X-axis and the two axes on the column 2 side, the guide rods 26, 28 of any rack 24, 25 can be moved as shown in FIGS. 2 and 7.
The guide rods 16 and 18 on the column 2 side can also be butted against each other.

Further, as shown in FIG. 9, in the center of the racks 24 and 25, a magazine change cylinder (hereinafter simply referred to as a cylinder) 27 of Rodless Steig is disposed as a magazine exchange device, and the output section of this cylinder 27 is Hook 2 that engages with the engagement member 21 on the tool magazine 7.17 side
9 is installed.

As shown in FIGS. 1 and 3, a tool magazine 7 is mounted on the column 2 side, and a rack 24.
25, one of the racks 24
Alternatively, the spare magazine 17 is stored only in 25.

Next, the operation of the cutting equipment configured as described in 5 above will be explained.

In FIGS. 1 to 4, it is assumed that the tool magazine 7 is attached to the column 2 on the metal plate.

One rack of the magazine storage device 10, for example, rack 2
A spare tool magazine 17 is stored in rack 4, and no tool magazine is stored in the other rack 25. Therefore, if a tool that is not currently stored in the tool magazine 7 mounted on the column 2 is required, the tool magazine 2 mounted on the column 2 is transferred to the rack 25 and the tool magazine 2 mounted on the column 2 is transferred to the rack 25 instead. It is then necessary to transfer the spare tool magazine 17 to the column 2 side.

Therefore, first, as shown in FIGS. 7 and 9.

Move the hook 29 of the cylinder 27 on the rack 25 side to the forward position t.
K is kept on standby, and in this state, the column 2 is moved using the X axis and the two axes, and as shown in FIGS. 21 is engaged with the hook 29 described above. By engaging the engaging portion 21 and the hook 29, the guide rod 16.18 on the column 2 side and the guide rod 26.28 on the rack 25 side are simultaneously butted against each other, and the guide rods 16 and 2
6, and guide rods 18 and 28 are molded on the same axis.

After this, the locking device (not shown) that had previously locked the tool magazine 7 on the column 2 side is released, and the cylinder 2
7, the tool magazine 7 is moved to the guide rod 1.
6. The magazine 7 is guided by 18, 26, and 28 and pulled into the rack 25 side (see Fig. 7), and the magazine 7 that is pulled into the rack 25 side remains engaged with the engaging portion 21 and the hook 29. Then, it waits on the rack 25 until the next selection command is received.

On the other hand, one of the racks 24 has an engaging portion 2 as described above.
1 and the hook 29 remain engaged, and the spare tool magazine 17 is on standby. Therefore.

Move column 2 again using the movement of the X axis and the 2nd axis,
The guide rod 16.18 on the column 2 side is butted against the guide rod 26.28 on the rack 24 side so that they are aligned on the same axis. When the cylinder 28 on the rack 24 side is operated in this state, the tool magazine 17, which had been supported on the rack 24 side, is moved by the guide rods 26, 28 and 16.
．． Guided by 18, I transferred to the column 2 side. At this time, feed the tool magazine 17 to a predetermined position.

As shown in FIG. 6, a driven gear 19 for driving the chain 14 meshes with a mating drive gear 20.

Then, the tool magazine 17 sent to the column 2 side
After locking with a locking device not shown.

Move column 2 again using the movement of the X axis and the 2nd axis,
By releasing the engagement between the engaging portion 21 and the hook 29, the exchange of the tool magazine 7.17 between the column 2 and the magazine storage device IO is completed.

Once the tool magazine 7.17 has been replaced in this way, the KATC arm 5 will be used as is well known.
Tools are exchanged between the tool magazine 17 newly mounted on the column 2 side and the spindle head 4.

Here, if the number of racks on the magazine storage device IO side increases to three or more, unless the stroke of the column 2 in the X direction is increased, the tool magazine 7#17 as described above
In that case, the shift cylinder 23 shown in FIGS. 1 and 2 is used to shift all the racks in the X direction.

Effects of the Invention As described above, the NC type cutting device of the present invention has the following advantages:
．． By making it possible to exchange tool magazines between the column and the magazine storage device installed outside the column, the tool storage capacity can be greatly increased without increasing the size of the column side. . In addition, in the case of workpieces that require a relatively small number of tools, the tool magazine attached to the column is sufficient to handle the work, which allows for quick tool changes, making it particularly useful as a cutting device for FMS lines. It is extremely versatile when used.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an embodiment of the present invention. Figure 2 is a front view of Figure 1, Figure 3 is a plan view of Figure 1, Figure 4 is a side view of the stone in Figure 1, Figure 5 is a front view of the tool magazine, and Figure 6 is a front view of the tool magazine. Vertical section of the figure. 7 is a front view of the storage rack in the magazine storage device, FIG. 8 is a left side view of FIG. 7, and FIG. 9 is a view taken in the direction of arrow A in FIG. 7. 2... Column, 4... Turret type spindle head as a processing head, 5... ATC arm, 6...
Slide, 7.17... Tool magazine, 10...
Magazine storage device, les1g...guide rod, 2
4゜25...Storage rack, 26.28...Guide rod, 27...Magazine change cylinder as a magazine exchange device, T...Tool. Figure 4 Figure 6

Claims (1)

[Claims] (1) In an NC type cutting machine equipped with an automatic tool changer that exchanges tools between the machining head and a tool magazine installed in the column, there is a
An NC type cutting device characterized by being provided with a magazine storage device for storing a spare tool magazine, and a magazine exchange device for exchanging tool magazines between the column and the magazine storage device.