JP3003053B2 - Work clamp device for printed circuit board drilling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to drilling of a printed circuit board, and more particularly to a work clamp apparatus for a printed circuit board drilling machine suitable for improving the positional accuracy of a processed hole.

[0002]

2. Description of the Related Art In a conventional work clamp device of a printed circuit board drilling machine, a plurality of printed circuit boards, which are products, are placed on a table and positioned to protect the table. Stand up the fixing pins, insert the reference holes drilled at both ends of the printed circuit board,
At the time of drilling, the drilled portion of the printed circuit board was processed while being pressed by a pressure foot provided around the spindle.
That is, as shown in FIG. 5, the printed circuit board 1 has the fixing pins 8 inserted into the reference holes formed at both ends in the X direction, and is fixed to the upper surface of the table 2 via the lower plate.
Is moved in the X direction on the bed 5 by a feed shaft and a motor (not shown). The column 6 is mounted on the bed 5, and the slide frame 20 is moved in the Y direction by a motor 21 via a pole guide 25 fixed to the surface on the printed circuit board 1 side. The pole guide 25 is also fixed in the Z direction, and the saddle 2 attached to the side surface of the slide frame 20.
2 is moved in the Z direction by the motor 23. Saddle 22
The spindle 4 is mounted on the spindle 4 and a collet chuck is supported at the tip of the spindle 4 so that a tool for processing can be detachably held. Therefore, the tool is relatively moved in the X, Y and Z directions. Drilling of the printed circuit board 1 can be performed. When drilling, the pressure foot (not shown) around the spindle presses the periphery of the hole on the printed circuit board to perform the processing. When the processing is completed, the spindle moves up and the pressure foot moves away from the top surface of the printed circuit board. This operation was repeated several hundred to several thousand times per printed circuit board.

[0003]

In the conventional work clamp device for a printed circuit board, the printed circuit board moves with the pressing and separating of the pressure foot every time the spindle is moved up and down to make a hole. There is a problem that the reference hole inserted into the fixing pin is damaged, which adversely affects the positional accuracy and quality of the machined hole.

An object of the present invention is to provide a work clamp device for a printed circuit board drilling machine capable of performing high precision and high quality drilling of a printed circuit board.

[0005]

In order to achieve the above object, a work clamp apparatus for a printed circuit board drilling machine according to the present invention comprises: a table on which a printed circuit board is placed;
At least one that is mounted on a cable
And two slide units, and
When the slide unit is moved,
A stopper that abuts the end face of the plate, and the slide unit
And the stopper is provided on the printed circuit board end.
In the state of contact with the surface, the non-contact with the end face of the printed circuit board
Move vertically to lock the top edge of the printed circuit board
And a pressing member for releasing the locking .

[0006] The printed board is mounted on the table.
Two fixing pins to be inserted into the reference holes at both ends
And the stopper and the holding member are the two
It is configured to be arranged in a direction crossing a line connecting the fixing pins .

[0007]

[0008]

According to the present invention, by providing the work clamp device of the printed circuit board drilling machine with the press member and the stopper, the stopper moving in the horizontal direction abuts the end face of the printed circuit board to position the press member . Since the upper surface of the end portion of the printed circuit board is pressed by the pressing member moving downward, the printed circuit board does not move up and down during drilling. In addition, when the holding member moves up and down,
The printed circuit board is in non-contact with the end face of the printed circuit board.
The end surface of the substrate is not rubbed by the pressing member.

Since the stopper moves in the horizontal direction and comes into contact with the end surface of the printed circuit board, the pressing member is stopped at a position corresponding to the size of the printed circuit board.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 and 2, the printed circuit board drilling machine fixes both ends of the printed circuit board 1 in the X direction to the upper surface of the table 2 via fixing plates 8 via a lower plate. Is moved in the X direction on the bed 5 by a feed shaft (not shown) and a motor. The column 6 is mounted on the bed 5, and the slide frame 20 is connected to a motor 21 via a pole guide 25 fixed to a surface of the bed 5 on the printed circuit board 1 side.
To move in the Y direction. The pole guide 25 is also fixed in the Z direction, and the saddle 22 attached to the side surface of the slide frame 20 is moved in the Z direction by the motor 23. The spindle 4 is mounted on the saddle 22, and a collet chuck is supported at the tip of the spindle 4, so that a processing tool is detachably gripped.

The work clamping device is provided with a pressing member 3.
And a stopper 9. First, a plurality of slide units 10 are mounted inside the table 2 at both ends in the X direction so as to be slidable in the horizontal direction, facing each other via the printed circuit board 1. A cylinder 1 for moving the holding member 3 up and down is provided on the upper surface of each slide unit 10.
1 and a stopper 9 are provided. A bent portion is formed on the upper part of the holding member 3 so as to lock the upper surface of the printed circuit board 1, and the stopper 9 has a circular sectional shape and an upper surface of the printed circuit board 1 placed on the table 2. And have a length to reach.

Next, the operation of this embodiment will be described with reference to FIGS.

As shown in FIG. 2 to FIG.
Is placed on the table 2 and positioned in the X direction with the fixing pins 8, and then the slide unit 10 is moved in the direction of the arrow by a drive source (not shown) so that the stoppers 9 come into contact with the respective end faces of the printed circuit board 1, The holding member 3 is positioned. In this state, as the cylinder 11 descends, the pressing member 3 descends as shown by the broken line, and the upper surface of the printed circuit board 1 is pressed against the table 2 by the lower surface of the bent portion. By this operation, the lifting A on both end surfaces of the printed circuit board 1 is prevented.

According to this embodiment, the printed board does not move up or down due to the pressing or separating of the pressure foot, and the influence on the reference hole for inserting the fixing pin is prevented, so that the dimensional accuracy and quality of the machined hole are improved. I do.

Further, since the stopper moves in the horizontal direction to position the holding member, printed boards of various dimensions can be clamped.

[0017]

According to the work clamping device for a printed circuit board drilling machine of the present invention, a printed circuit board of various dimensions can be drilled while preventing vertical movement and floating, so that a printed circuit board with respect to a reference hole for inserting a fixing pin can be formed. There is no influence, and the dimensional accuracy and quality of the machined hole can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a present embodiment.

FIG. 2 is a transverse sectional view showing a main part of FIG.

FIG. 3 is a plan view illustrating the operation of the present embodiment.

FIG. 4 is a side view illustrating the operation of the present embodiment.

FIG. 5 is a diagram showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed circuit board 2 Table 3 Holding member 8 Fixing pin 9 Stopper 10 Slide unit

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-232840 (JP, A) JP-A-1-103209 (JP, A) JP-A-4-29332 (JP, U) JP-A-58 106200 (JP, U) Fully open 1987-205740 (JP, U) Fully open 1987-183-1 (JP, U) Fully open 1985-109834 (JP, U) Fully open 1986-134830 (JP, U) Japanese Patent Publication 2-55178 (JP, B2) Japanese Utility Model 60-40315 (JP, Y2) Japanese Utility Model 61-7848 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23Q 3/06 B23B 41/00 B26F 1/16 H05K 3/00

Claims (2)

(57) [Claims] A table on which a printed circuit board is placed;
A small, free-movable, horizontally-installed table
One slide unit and the slide unit
The slide unit is provided on the
A stopper that abuts the end surface of the printed circuit board and the slide
Provided on the unit, wherein the stopper is
While in contact with the end face of the printed circuit board,
Moves up and down by contact and moves to the top edge of the printed circuit board
A holding member for locking or releasing the locking;
A work clamp device for a printed circuit board drilling machine, comprising: 2. The table is provided on both sides of the printed circuit board.
Two fixing pins to be inserted into the reference holes at the end are provided
The stopper and the holding member are fixed to the two fixed members.
The work clamp device for a printed circuit board drilling machine according to claim 1, wherein the work clamp device is arranged in a direction crossing a line segment connecting the fixed pins .