JPH0223367Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention enables one
This product relates to a woodworking router that can be used for peripheral machining, drilling, cutting, and groove machining using this machine, and particularly relates to a head support device.

<Prior Art> The following devices are available as woodworking routers. In other words, a cross column extending in the horizontal direction is attached to the machine base, and a plurality of heads are attached to this cross column so that they can be hooked on and removed and moved laterally, and one of the heads is connected to the drive system. (Patent Application No. 56-52135).

However, in this woodworking router, since the head selectively connected to the drive system does not tilt in the front-rear or left-right direction, the blade does not intersect perpendicularly to the work surface, especially when processing a curved workpiece. For this reason, there was a drawback that the machining accuracy was lost or an incorrect cutting load was applied to the blade, which easily caused damage to the blade.

Therefore, in order to eliminate this drawback, if we try to tilt the cross column in the front and back and left and right directions with respect to the machine base, not only will the tilting mechanism become large because the cross column is large, but the longitudinal end of the cross column will This also causes the inconvenience that the parts collide with the bed. Furthermore, if each head is tilted back and forth and left and right with respect to the cross column, a tilting mechanism must be provided for each head, which is uneconomical.

Therefore, the applicant proposed the following device in the application of Utility Model Application No. 59-039906. In other words, the horizontal center of the cross column is partially divided to form a divided column, the divided column is attached to the machine base, and the divided column is tilted at least in the front-back direction or left-right direction with respect to the machine base. This head support device in a woodworking router is provided with a mechanism and selectively connects the head supported by the split column to a drive system.

However, with this tilting mechanism, the center of swing in the front-back direction is shifted to the rear of the head, so when the head swings back-and-forth, the amount of vertical deviation of the head becomes large. .

<Problems to be Solved by the Invention and Means for Solving the Problems> The present invention is a head support device that eliminates the above-mentioned disadvantages, and is constructed as follows.

In other words, a cross column on which a plurality of heads are detachably and laterally movably mounted is installed horizontally on the machine base, and the horizontal center of this cross column is partially separated to form a divided column. In a woodworking router in which a head supported by a split column is connected to a drive system and the split column is swingable in both directions, front and back and left and right relative to the machine base, the center of swing in the front and back and left and right directions is set at the head. This is a support device for the head of a woodworking router, which is installed directly above the center of the router.

<Example> An example of this invention will be described below based on the drawings. Y-axis rail 2 extending in the front and back direction on the machine base 1
a, and a Y-axis table 2 is slidably disposed on the rail. An X-axis rail 3a extending in the left-right direction is provided on the Y-axis table 2, and the X-axis table 3 is slidably disposed on the rail. The Y-axis table 2 connects the X-axis table 3 to the Y-axis feed screw 4 provided inside the machine base 1.
is screwed into an X-axis feed screw (not shown). The Y-axis feed screw 4 is driven by a Y-axis servo motor 5, and the X-axis feed screw is driven by an X-axis servo motor 6.

A column 7 is established at the rear central part of the machine stand 1, and a Z-axis rail 8a extending in the vertical direction is provided on the upper front surface of the column 7, and a Z-axis rail 8 is disposed on the rail so as to be movable up and down. The Z-axis servo motor 9 disposed at the top of the column 7 moves the Z-axis relay 8 up and down via a Z-axis feed screw (not shown). Column 7
A pair of left and right arms (not shown) extending forward is provided on the upper front surface of the vehicle, and a cross column 10 extending left and right is disposed between the two arms. The cross column 10 is divided at its center in the left and right direction and separated into left and right parts, and a divided column 11 is provided in this spaced gap.

The divided column 11 is configured as follows. That is, a support shaft 12 is rotatably provided at the center of the lower part of the Z-axis relay 8, and a swinging body 13 in the left-right direction is integrally attached to the front end of the support shaft 12. Oscillator 13
A worm gear part 131 is provided at the lower part of the worm gear part 131, a worm 14 is screwed into the worm gear part 131, and the worm 14 is attached to the rotating shaft of a servo motor 15 for left-right swinging attached to the Z-axis shiray 8. As a result, when the servo motor 15 is rotated, the swinging body 13 swings in the left-right direction when viewed from the front, with the support shaft 12 as the center of rotation. Supports 1 are installed on the left and right front surfaces of the rocking body 13.
6 and 16 are provided, opposing rollers 17 and 17 are attached to the top and bottom of this support body 16, and a sliding body 18 having a fan shape in side view is sandwiched between these opposing rollers 17 and 17. In front of the sliding body 18 are upper and lower support parts 18a,
18b is provided protrudingly. A worm gear 19 for swinging the sliding body 18 in the forward and backward directions, which is fan-shaped when viewed from the side, is integrally provided in the center of the sliding body 18 . This worm gear 19 is a sliding part 181 of the sliding body 18.
The center of rotation 0 is the same as the center of rotation of the sliding body 18, that is, the center of the head 20, that is, directly above the cutter 21. Worm for back and forth rocking
The gear 19 is a servo motor 22 for swinging back and forth.
It engages with a worm 23 attached to the lower end of the rotating shaft. As a result, when the servo motor 22 is rotated, the oscillator 18 rotates the rollers 17 and 17 of the support 16.
It swings in the direction of arrow A around the rotation center 0 while being held between the two.

On the other hand, a bracket 24 having a U-shape in side view is attached to the back of the head 20, and an upper roller 25a rotating on a horizontal axis and a lower roller 25b rotating on a vertical axis are provided above and below the rear of the bracket 24. The upper roller 25a rolls on the upper surface of the rail 18c of the sliding body 18, and the lower roller 25b also rolls on the upper surface of the rail 18c.
Roll on the front of 8d. At the upper part of the bracket 24, there is a locking pin 27 that engages with the locking cylinder 26 of the support part 18a, and at the lower part, a locking pin 28 of the support part 18b is installed.
A locking tube 29 that engages with the locking tube 29 is provided respectively.

A sliding body 1 is installed on the front side of the cross column 10 described above.
Rail 10 with the same width as rails 18c and 18d of 8
A rail body 10b having a plurality of heads 20a and 10a is provided so as to be slidable in the left and right direction, and a plurality of heads 20a and 20a are mounted thereon.
0b, 20c, 20d, and 20e are arranged so as to be swingable in the left-right direction. On both sides of the rail body 10b,
A cylinder 30 for the rail body is provided to move the rail body 10b from side to side. Above the cross column 10, rodless cylinders 31, 31 for moving each head 20 left and right are disposed facing each other on the left and right, and the wire 311 is connected to moving bodies 32, 32 that move left and right along rods 321. Link. The left and right moving bodies 32 each have a rodless cylinder 31.
, the head 20a moves to the right and the head 2
Move 0e to the left. This causes all the heads 20 to move left and right. A plurality of stop plungers 33 are attached to the cross column 10 at predetermined intervals in the left-right direction, and each stop plunger 33 is moved forward and backward by an air cylinder 331. The stop plunger 33, which projects forward, collides with the head 20 and stops the head 20 at the set position.

Note that each of the above-mentioned servo motors is controlled and driven by an external NC device.

Next, the operation of the above embodiment will be explained. First, a workpiece is set on the X-axis table 3. Based on commands from a pre-programmed NC device,
Driven by wireless cylinder 31, moving body 32
The heads 20a to 20e are moved left and right along the cross column 10 via the cross column 10. When the head to be used, for example, the head 20b, is at a predetermined position on the split column 11, move the locking pin 28 provided on the support portion 18b upward to engage the locking tube 29, and at the same time, move the bracket 24 slightly. By moving it upward, the locking pin 27 provided at the upper part engages with the locking cylinder 26 of the support portion 18a. This fixes the head 20b on the dividing column 11.

Next, the Z-axis servo motor 9 is started, and the head 20b is moved down to a predetermined position via the Z-axis relay 8 to the working position. Next, the head 20b is energized, the spindle is rotated, and the cutter 21 attached to the lower part thereof is rotated. From now on, the X-axis servo motor 6, the Y-axis servo motor 5, the Z-axis servo motor 9,
servo motor 15 for swinging in the left-right direction and front-back direction;
22 is driven by a command from the NC device, and the workpiece is machined with a cutter.

When replacing the head 20, for example, the head 20
To replace head 20c with head 20c, first
Turn off the power to 0b, and turn off the servo motor 1 for both swings.
5 and 22, the head 20b is returned to the vertical position.
The head 20b is moved down by the Z-axis servo motor 9 to align the rails 18c, 18d of the swinging body 18 with the rail 10a of the cross column 10. Next, the left and right wireless cylinders 31 and stopper plungers 33 are controlled to identify the head 20 to be replaced.
c is moved onto the dividing column 11, and the used head 20b is also moved onto the left cross column 10. Next, the cylinder 30 for the rail body
, the rod is shortened, the left and right rail bodies 10b, 10b are retreated outward, and the head 2
Create a space for swinging on both sides of 0c.

This invention is constructed as explained above, and allows the divided column provided at the center of the cross column to swing freely in both directions, front and back, left and right, and the center of rotation of both swing movements is set at the center of the head, that is, the center of the cutter. Directly above. For this reason, when the head is swung, the amount of vertical deviation of the head is smaller than that of conventional devices, and the swiveling motion is symmetrical in the left and right directions.
This has the effect that the program for the NC device can be easily configured.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a cross-sectional front view of main parts showing a swinging mechanism of the head in the left-right direction, and Fig. 4 is a plan view of the same. ,
FIG. 5 is a sectional left side view of a main part showing a swinging mechanism for the head in the front-rear direction, and FIG. 6 is a right side view of the same. 1...Machine base, 10...Cross column, 11...
Divided column, 13... Lateral rocking body, 19...
...Worm gear for front-back rocking, 20...Head.

Claims (1)

[Scope of utility model registration request] A cross column on which a plurality of heads are attached removably and laterally movably is installed horizontally on the machine base, and the horizontal center of this cross column is partially separated to form a divided column, and the divided column is In a woodworking router in which the supported head is connected to the drive system and the split column is swingable in both the front, back, left and right directions with respect to the machine base, the center of swing in the back and forth and left and right directions is set at the center of the head. A support device for the head of a woodworking router that is set directly above the head.