JPS6013604Y2 - Processed material fixing device for multi-head drilling machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a workpiece fixing device installed in a multi-head drilling machine having a vertical head, a horizontal head, and a table.

Conventionally, when assembling a box as shown in Fig. 1, for example, a dowel hole H was used to fix the top plate T to the end W of the side plate S.
When opening, the center position is determined by how many millimeters from the inner surface I of the side plate S, that is, the surface on which the shelf board B is fixed.

The reason for this is that if, on the contrary, the outer side O is used as a reference for positioning, if there are variations in the thickness d of the side plates S, the spacing between the side plates will be inconsistent, and the shelf B of a constant width will not fit. This is because it disappears.

For the above reasons, when drilling into the side panels of box objects using a drilling machine with a vertical head with the drill protruding downward and a horizontal head with the drill protruding horizontally,
The center position of the dowel hole to be drilled in the end of the processed material must be determined based on the surface of the processed material on which the shelf board will be attached.

For this reason, when drilling a hole on the top surface of a workpiece with a downward-facing vertical head and at the end of the workpiece with a horizontal head, the workpiece is placed on a table and tightened from above, as in the past, using a workpiece fixing device. Since the bottom surface of the processed material is used as a reference, if there are variations in the thickness of the material, the position of the holes drilled in the end of the wood will be misaligned, and this will cause errors in the spacing between the side panels when assembled into a box. There were some drawbacks.

To avoid this, there is a device, for example, Japanese Utility Model Publication No. 46-35503, in which a vertical head is placed under the workpiece, but this has other drawbacks such as a complicated structure.

This invention relates to a workpiece fixing device proposed to solve the above-mentioned problems in multi-head drilling machines.

Examples thereof will be described below based on the drawings.

In FIGS. 2 and 3, a column 2 is established from the rear of the bed 1, and a vertical body 4 is disposed at the tip thereof to be raised and lowered by an air cylinder 3.

On the front surface of the upper and lower bodies 4, vertical heads 5 and 6 to which the drill D is mounted downward, and horizontal heads 7 to which the drill D is mounted to the left and right are mounted so that they can be moved up and down separately.

Among these, the vertical head 6 is a small one with five axes, but the vertical head 5 is a long head that can mount 20 drills D and can rotate 90 degrees in the horizontal direction.

That is, as shown in FIGS. 4 and 5, an air cylinder 53 is attached to the outside of a connecting portion 52 that connects the head 5 and the motor 51.
A rack 54 is connected to the piston rod of the air cylinder 53, and is engaged with a gear portion 55 provided on the outer periphery of the connecting portion 52.

By moving the rack 54 forward and backward, the connecting portion 5
2 and the following head 5 are rotated 900 times in the horizontal direction.

Note that, prior to rotation, the head 5 is set so as to be sure to descend and not collide with the adjacent head 6.

The horizontal head 7 is a new type with spindles protruding to both sides and drills D can be attached to the left and right sides.

Above the bed 1 is a movable table 8 that slides in the front-rear direction (X direction).
A table 9 that slides in the left-right direction (Y direction) is arranged thereon.

A workpiece fixing device A is installed on the table 9 to push up and fix the workpiece W from below.

That is, as shown in FIG. 6 and FIGS. 2 and 3, air cylinders 10 that support and push up the workpiece W from below are provided opposite to each other at the front and rear of one side of the table 9. Pressing piece 11 brought into contact with the lower surface of workpiece W
will be established.

Supports 12 are erected on the front and rear cylinders 10 and 10, and an upper reference bar 13 is installed between the upper ends of both branches 12 to regulate the upper surface position of the workpiece W.

A plurality of such fixing members for the workpiece W are provided at intervals on the left and right sides of the table 9.

On opposite sides of both cylinders 10, rollers 14 and 14 are provided to support the lower surface of the workpiece W and to feed it in the left-right direction.

A plurality of regulating roller stands 15 are provided on the front surface of the table 9, and a roller 16 for regulating the front position of the workpiece W with its circumferential surface is protruded from a slit 151 formed in the upper part thereof.

The position of the roller 16 in the longitudinal direction within the slit 151 is adjustable.

On the left side of the table 9 is an air cylinder 17 that is long in the left and right direction.
is provided, and a rail 19 is arranged on the right front surface of the rail 19, which extends in the left-right direction and whose right side protrudes from the table 9 to the right.

A bushing 20 is mounted on the rail 19 so as to be slidable in the left-right direction, and the tip of the iron 18 of the air cylinder 17 is connected to the bushing 20.

At the right end of the rail 19, there is a stopper 21 of the bushing 20.
A stop table 22 for stopping the movement of the workpiece W is provided at the left end of the table 9.

Next, the operation of this device will be explained.

First, to set the workpiece W, the cylinder 17 is driven to extend the iron 18 to the right in the Y direction, and the bushing 20 is moved until it hits the stopper 21.

Next, the workpiece W is placed on the roller 14, and this time the pusher 20 is moved to the left in the opposite Y direction, and the workpiece W is moved until its tip touches the stop table 22.

After the workpiece W has been moved, the iron 18 is extended and the bushing 20 is returned to its original position.

Note that, prior to this, it is necessary to move the regulating roller 16 back and forth to match the distance between it and the support column 12 on the back side to the width of the workpiece W.

When the workpiece W is placed in a fixed position, each cylinder 10 is actuated to raise the pressing piece 11, and the workpiece W is pushed up until its upper surface touches the upper reference bar 13, and the pressing piece 11 and bar 13 push the workpiece W up. Fix the workpiece W by sandwiching it therebetween.

When the setting of the workpiece W is completed, move the moving table 8 and the table 9.
Move them back and forth, left and right, respectively, to align the positions, and lower the head to be used so that it faces the processing position.

These operations are the same as with conventional multi-spindle drilling machines.

It goes without saying that if an NC machine is attached to this apparatus, each of the above operations can be performed fully automatically according to the commands of the NC machine.

The fixing device for a workpiece according to this invention is configured as described above, and the upper surface position of the workpiece is regulated and the workpiece is pushed up from below and fixed.

For this reason, if this fixing device is used in a multi-head drilling machine that has a vertical head and a horizontal head and drills into the side plate of a box object, even if the vertical head is placed above the workpiece like the conventional device, it will not work on the butt end side. This has the effect of preventing the position of the dowel hole from being distorted due to variations in the thickness of the processed material.

Furthermore, since the vertical head can be installed above the workpiece, it is possible to create a structure in which the table on which the workpiece is placed can be moved back and forth and left and right.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the relationship between the top plate and side plate of the box, Figure 2
The figure is a front view showing the multi-head drilling machine according to this invention, Fig. 3 is a side view of the same, Fig. 4 is a front view showing the rotating part of the vertical head, Fig. 5 is a plan view of the same, and Fig. 6 is a processed material. FIG. 3 is a perspective view showing the fixing device of FIG. 1...Bed, 2...Column, 4...
... Upper and lower body, 5.6 ... Vertical head, 7.
...Horizontal head, 9...Table, 10...
... Air cylinder that pushes up the workpiece, 1 1 ... Pressing piece, 13 ... Top reference bar, ... Workpiece fixing device, W ... ...Processed materials.

Claims (1)

[Scope of utility model registration request] The upper and lower bodies are attached to the tip of a column erected from the rear of the bed so as to be able to rise and fall freely, and a vertical head with a drill protruding downward and a horizontal head with a drill protruding horizontally in the left and right directions are attached to the upper and lower bodies. In this multi-head drilling machine, which is equipped with a table that slides back and forth and left and right, a pair of air cylinders are installed at the front and back of the table to support and push up the workpiece from below, and air cylinders are installed upright on the front and rear cylinders. A workpiece fixing device for a multi-head drilling machine, comprising a plurality of workpiece fixing members arranged at intervals on the left and right sides of a table, each of which has an upper surface reference bar installed between the supports to regulate the upper surface position of the workpiece.