JPH038401Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is achieved by selectively connecting various types of heads, each with its own processing, to the machine.
This invention relates to a machine tool that can perform peripheral machining, drilling, cutting, grooving, etc. using this machine, and particularly relates to its head support device. As one of the prior art, the Utility Application filed by the applicant in 1982-
There are ideas described in No. 39906 and Utility Model Application Publication No. 171304/1983. The gist of this idea is as follows. That is, a plurality of heads are mounted in parallel on a cross column installed horizontally on the machine base in a removable and horizontally movable manner, and any one of the heads is selectively connected to the drive system. , a divided column is provided by partially dividing the horizontal center of the cross column, the divided column is attached to the machine base so as to be tiltable in the longitudinal and horizontal directions, and the head supported by the divided column is connected to the drive system. This is a head support device for a woodworking machine that is connected to the head of a woodworking machine.

However, in this device, the center of swing in the front-back direction of the tilting device is shifted to the rear of the head.
When the head is swung back and forth, there is an inconvenience that the amount of displacement of the head becomes large.

The present invention is a tilting mechanism for a head support device that eliminates this inconvenience, and is constructed as follows. That is, a plurality of heads are mounted in parallel on a cross column installed horizontally on the machine base in a removable and horizontally movable manner, and any one of the heads is selectively connected to the drive system. , a divided column is provided by partially dividing the horizontal center of the cross column, the divided column is attached to the machine base, and a tilting mechanism is provided to rotate and tilt the divided column with respect to the machine base, and the tilting mechanism is provided. The mechanism is equipped with a disc gear that rotates around a vertical shaft located directly above the center of the head that is connected to the drive system, and a long hole is formed through the shaft center of the disc gear. This is a tilting mechanism for a head support device in a woodworking machine, in which the upper end of a split column is pivotally mounted directly above the center of the head, and the head supported by the split column is connected to a drive system.

An embodiment in which the above configuration is embodied will be described below based on the drawings.

First, in FIGS. 1 and 2, FIG. 1 is a front view of a woodworking machine to which the present invention is applied, that is, a woodworking router, and FIG. 2 is a side view thereof.

An overview of the woodworking router will be explained with reference to FIGS. 1 and 2. On the machine base 1 are a Y-axis table 2 that moves in the front-back direction and an X-axis table 3 that moves in the left-right direction.
Place them one after another facing upward.

The Y-axis table 2, as shown in FIG.
It is driven in the front-rear direction by a Y-axis servo motor 2a via a Y-axis feed screw 2b provided in the machine base 1.

Further, the X-axis table 3 is driven in the left-right direction by an X-axis servo motor 3a via an X-axis feed screw (not shown).

The Y-axis servo motor 2a and the X-axis servo motor 3a are driven and controlled by an external NC, that is, a numerical control device (not shown).

A column 4 is fixed in an upright position at the center of the rear part of the machine base 1 described above.

A Z-axis rail 4a extending in the vertical direction is formed on the upper front surface of the column 4, and a Z-axis rail 5 is formed on this.
is installed so that it can slide vertically. This Z-axis relay 5 is moved up and down by a Z-axis servo motor 5a arranged upright on the top of the column 4 via a Z-axis feed screw (not shown). This Z-axis servo motor 5a
The drive is also controlled by an external NC.

A cross column 6 extending in the left-right direction is attached to the upper part of the column 4.

The cross column 6 is divided at its longitudinal center and spaced apart from each other in the left-right direction, and the divided column 7, which is a feature of the present invention, is disposed in this spaced gap.

The divided column 7 is attached to the Z-axis relay 5 described above. As shown in FIG. 3, this divided column 7 can be tilted in the front-rear and left-right directions with respect to the X-axis table 3 by a tilting mechanism A.

Next, the tilting mechanism A will be described in detail. Third
As shown in the figure, an arm 8 that protrudes forward is integrally provided on the upper part of the Z-axis relay 5, and a circular shaft hole 8a centered on the vertical shaft A is formed through the front part of the arm 8. do. The vertical axis A shall be directly above the center of the head connected to the drive system.

Then, a disk gear 9 having teeth 9a on its outer periphery is rotatably placed in the shaft hole 8a. Further, an elongated hole 9b is formed through the axial center of the disc gear 9, and the upper part of the split column 7 is fitted into the elongated hole 9b so as to be able to swing.

At the upper end of the split column 7, a shaft 10 that projects horizontally (in the left-right direction in FIG. 3) directly above the head is fixed, and the shaft 10 is placed on the upper surface of the disk gear 9 mentioned above. Fixed support case 11
Rotatably connects to.

As a result, the divided column 7 is swingably suspended from the disc gear 9 and therefore the arm 8 via its shaft 10.

Then, at the right end in FIG. 3 of the shaft 10,
While fixing the fan-shaped gear 12 extending upward, the first servo motor 1 is attached to the support case 11.
A drive gear 13a attached to its output shaft is connected to the sector gear 12 described above via a reduction gear 13b and a pinion gear 13c also attached to the support case 11.

As a result, when the first servo motor 13 starts, its output is transferred to the drive gear 13a and the reduction gear 13.
b. It is transmitted to the shaft 10 via the pinion gear 13c and the sector gear 12, and the divided column 7 swings about the horizontal axis relative to the disk gear 9 and arm 8. On the other hand, a second servo motor 14 is placed and fixed at the base of the arm 8, that is, at the right end in FIG. 3, and a drive gear 14a is attached to its output shaft.
The reduction gear 14 is also fixedly supported on the arm 8.
b. It is connected to the teeth 9a of the disc gear 9 mentioned above via the pinion gear 14c.

As a result, when the second servo motor 14 starts, its output is transmitted to the drive gear 14a and the reduction gear 14.
b, the pinion gear 14c, and the disk gear 9, and the divided column 7 rotates about the vertical axis relative to the arm 8.

Next, a rail 15 extending in the left-right direction is fixed to the lower front surface (left side in FIG. 3) of the divided column 7. Further, at the upper part of the center part in the left and right direction, a locking tube 16 for locking the upper part of the head 19a, which will be described later, is provided.
A locking pin 17 for locking the lower part of the head 19a is provided at the lower part of the central portion.

The locking pin 17 is integrally fixed to a piston 18 that moves up and down with compressed air.

On the other hand, a head bracket 20 is fixed to the back surface of the head 19a. This head bracket 20
As shown in Fig. 3, it has a U-shape in side view,
At the upper and lower parts of the rear part thereof, there are rollers 21 and 22 that rotate about horizontal and vertical axes, and a roller 23 that also rotates about vertical axes. roller 2
1 and 22 roll on the upper edge 15a of the rail 15 provided on the divided column 7, and the roller 23 rolls on the front surface of the lower edge 15b of the rail 15.

Further, on the upper surface of the center part of the head bracket 20, there is a locking pin 24 that locks with the locking tube 16 of the split column 7, and on the lower surface of the center part, a locking pin 24 that locks with the locking pin 17 of the split column 7 is provided. A tube 25 is provided respectively.
A stopper 26 is fixed to the lower rear end of the head bracket 20 and engages with the back surface of the rail 15 to prevent the head bracket 20 from falling off.

As shown in FIG. 1, the above-mentioned cross column 6 has rails 6a and 6b at the top and bottom of its front side corresponding to the rails 15 on the side of the divided column 7, and a plurality of types of heads 19b to 19e are mounted on these. Installed so that it can be moved left and right.

In addition, each head 19 is attached to the cross column 6.
A pair of left and right hydraulic cylinder mechanisms 27 and 28 for moving a to 19e in the left and right direction are mounted oppositely.
Each of these hydraulic cylinder mechanisms 27, 28 has a hook 27a, 28a at the end of its piston rod, the hook 27a is attached to the bracket of the rightmost head 19e, and the hook 28a is attached to the leftmost head 19e.
9b from the outside.

Furthermore, as shown in FIG. 1, stopper plungers 29 are attached to the cross column 6 at predetermined pitches in the left-right direction.

This stopper plunger 29 is moved forward and backward by an air cylinder, and when it protrudes forward, it interferes with a locking piece (not shown) provided on each head bracket 20, and the position that sets the left and right movement of this stopper plunger 29 is Positioning is now possible.

By the way, the first and second servo motors 1 mentioned above
3, 14, piston 18, hydraulic cylinder mechanism 2
7, 28 and the stopper plunger 29 are controlled and actuated by a preprogrammed NC.

Next, the operation of the above embodiment will be explained.

When machining a workpiece, the hydraulic cylinder mechanisms 27 and 28 are first activated according to a command from the NC that has been programmed in advance, and each head 19
a to 19e are moved left and right along the cross column 6, and when a particular head 19a, for example, reaches a predetermined position on the divided column 7, the piston 18 provided at the bottom of the divided column 7 is moved upward, and the locking pin 17 is moved upward. At the same time as engaging with the locking cylinder 25, the head bracket 20 is moved slightly upward so that the locking pin 24 provided at the upper part of the head bracket 20 engages with the locking cylinder 16 of the split column 7.

As a result, the head 19a is locked to the dividing column 7.

Next, the Z-axis servo motor 5a is started,
The head 19a is moved down to a predetermined position via the Z-axis servo 5, and then the first and second servo motors 1
3 and 14 are activated.

First, by starting the first servo motor 13, the sector gear 12 is rotated via the drive gear 13a, reduction gear 13b, and pinion gear 13c, and the shaft 10 is rotated.
will be rotated around its axis.

As a result, the dividing column 7 is rotated around the axis of the shaft 10, that is, the horizontal axis, and in the state shown in FIG. (The state shown by the imaginary line in Figure 4).

Further, by starting the second servo motor 14, the disk gear 9 is rotated via the drive gear 14a, reduction gear 14b, and pinion gear 14c.

As a result, the support case 11 and first servo motor 13 placed on the disk gear 9 and the divided column 7 suspended from the support case 11 are rotated around the rotation axis of the disk gear 9, that is, the vertical axis. The head 19a is rotated, and the above-mentioned tilting state of the head 19a in the left-right direction when viewed from the front with respect to the X-axis table 3 is changed to a tilting state in the front-rear direction.

Next, the head 19a is energized, the spindle is rotated, and the cutter I attached to the lower part of the head 19a is rotated.

After that, in addition to the Z-axis servo motor 5a and the first and second servo motors 13 and 14 mentioned above, the X-axis and
The Y-axis servo motors 3a, 2a are activated upon receiving appropriate commands from the NC, and the cutter I processes the workpiece placed on the X-axis table.

When the head 19a is replaced with the head 19b, for example, the power to the head 19a is turned off, and the first and second servo motors 13, 1
4, the head 19a is controlled to a vertical position, and then the Z-axis servo motor 5a moves the head 19a upward to control it to the same height position as the other heads 19b to 19e. 15a, 15b and the rail 6a of the cross column 6,
6b at the same horizontal position.

Next, the hydraulic cylinder mechanisms 27, 28 and the stopper flange 29 are controlled to move the head 19b to be replaced to the split column 7.
Thereafter, the control is performed in the same manner as the control of the head 19a described above.

In the above embodiment, the divided column 7 is tilted in the longitudinal direction and the left-right direction with respect to the machine base 1, but it may be tilted only in either the longitudinal direction or the left-right direction.

The present invention is constructed in this manner so that the divided column provided at the center of the cross column can swing freely in both the front, rear, left and right directions, and the center of rotation of both swing movements is set directly above the center of the head. Therefore, when the head is oscillated, the amount of vertical deviation of the head is smaller than in the conventional device. Since the rocking motion is symmetrical in the left and right directions, the program of the NC device can be easily configured.

[Brief explanation of the drawing]

Fig. 1 is a front view of a machine tool to which the head support device according to the present invention is applied, Fig. 2 is a side view thereof, Fig. 3 is an enlarged cross-sectional side view of the main part of the head part of Fig. 2,
FIG. 4 is an explanatory front view showing the tilting state of the head section. 1...Machine base, 2...Y-axis table, 3...X-axis table, 4...Column, 5...Z-axis relay, 5
a...Z-axis servo motor, 6...cross column,
7...Divided column, A...Tilt mechanism, 8...Arm, 8a...Shaft hole, 9...Disc gear, 9a...
Teeth, 9b...Elongated hole, 10...Shaft, 11...Support case, 12...Sector gear, 13...First servo motor, 13a...Drive gear, 13b...Reduction gear, 13c...Pinion gear, 14... Second servo motor, 14a... Drive gear, 14b... Reduction gear, 14c... Pinion gear, 15... Rail, 16... Locking tube, 17... Locking pin, 18...
...Piston, 19a-19e...Head, 20...
...Head bracket, 21-23...Roller, 2
4... Locking pin, 25... Locking tube, 26... Stopper, 27, 28... Hydraulic cylinder mechanism, 29...
…Stotupa plungeya.

Claims (1)

[Scope of utility model registration request] Multiple heads are mounted in parallel on a cross column installed horizontally on the machine base, allowing them to be removably hooked up and moved laterally.
In the apparatus in which any one of the heads is selectively connected to the drive system, the horizontal center of the cross column is partially divided to provide a divided column, and the divided column is attached to the machine base. At the same time, a tilting mechanism is provided to rotate and tilt the divided column relative to the machine base, and the tilting mechanism includes a disc gear that rotates around a vertical shaft provided directly above the center of the head connected to the drive system. A long hole is formed through the axial center of the disk gear, and the upper end of the split column is pivotally mounted within the long hole and directly above the center of the head, and the head is supported by the split column. A tilting mechanism for a head support device in a woodworking machine, which is connected to a drive system.