JPH04294949A - Work clamp device for print base punch - Google Patents

Abstract

PURPOSE:To conduct the punching processing of a print base with high precision and also in high quality. CONSTITUTION:A plurality of slide units 10 are fitted to the inside of a table 3 slidably in a horizontal direction through a print base 1, and a cylinder and in mutual opposition through a print base 1, and a cylinder 11 moving a pressor member 3 up and down and a stopper 9 are provided at each slide unit 10 upper surface. A bended portion is formed at the upper part of the pressor member 3 so as to engage stoppingly with the upper surface of the print base 1, and the stopper 9 is constituted that it may possess a circular section shape and a length that reaches the upper surface of the print base 1 mounted on the table 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to drilling holes in printed circuit boards, and more particularly to a workpiece clamping device for a printed circuit board drilling machine suitable for improving the positional accuracy of holes to be machined.

0002

[Prior Art] In a work clamping device of a conventional printed circuit board drilling machine, a plurality of printed circuit boards, which are products, are placed and positioned on a table, and in order to protect the table, two Raise the fixing pin of the book, insert the reference holes drilled at both ends of the printed circuit board, and
During drilling, the printed circuit board was pressed down with a pressure foot placed around the spindle. That is, as shown in FIG. 5, the printed circuit board 1 is fixed to the upper surface of the table 2 via the lower plate by inserting fixing pins 8 into reference holes drilled at both ends in the X direction.
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 a 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 22 attached to the side of the slide frame 20
is moved in the Z direction by the motor 23. A spindle 4 is mounted on the saddle 22, and a collet chuck is supported at the tip of the spindle 4 to detachably hold a machining tool.
Holes can be drilled in the printed circuit board 1 by relative movement in the direction. During drilling, a pressure foot (not shown) around the spindle presses the area around the printed circuit board during drilling, and when the drilling is completed, the spindle rises and the pressure foot moves away from the top surface of the printed circuit board. This operation was repeated hundreds to thousands of times for each printed circuit board.

0003

[Problems to be Solved by the Invention] In the conventional printed circuit board work clamp device, each time the spindle is moved up and down to drill a hole, the printed circuit board moves as the pressure foot presses and separates. There was a problem in that the reference hole inserted into the fixing pin was damaged, which adversely affected the positional accuracy and quality of the machined hole.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work clamp device for a printed circuit board drilling machine that can drill holes in printed circuit boards with high accuracy and high quality.

[0005]

[Means for Solving the Problems] In order to achieve the above object, a work clamping device for a printed circuit board drilling machine according to the present invention is a printed circuit board drilling machine for drilling a printed circuit board placed on a table and positioned. At least one stopper that is provided on the table of the machine and moves horizontally to abut the end surface of the printed circuit board, and at least one presser that is positioned at each stopper and moves vertically to lock the top surface of the printed circuit board. The configuration includes a member.

[0006] The respective stoppers and holding members are provided via the printed circuit board in a direction perpendicular to the direction of the fixing pins positioned at the respective ends of the printed circuit board.

[0007] Furthermore, each stopper and pressing member may be mounted on at least one slide unit.

[0008]

[Operation] According to the present invention, the work clamping device of the printed circuit board drilling machine is equipped with a holding member and a stopper, so that the stopper moving in the horizontal direction abuts the end face of the printed circuit board to position the holding member, Since the upper surface of the end of the printed circuit board is held down by the presser member that moves in the vertical direction, there is no vertical movement of the printed circuit board during drilling.

Furthermore, since the stopper moves horizontally and comes into contact with the end surface of the printed circuit board, the holding member is stopped at a position that matches the size of the printed circuit board.

0010

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the printed circuit board drilling machine fixes both ends of the printed circuit board 1 in the , 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 connected to the motor 21 via a pole guide 25 fixed to the surface 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 a saddle 22 attached to the side surface of the slide frame 20 is moved in the Z direction by a motor 23. A spindle 4 is mounted on the saddle 22, and a collet chuck is supported at the tip of the spindle 4, and is adapted to detachably hold a processing tool.

[0012]The work clamp device includes a holding member 3.
and a stopper 9, first, a plurality of slide units 10 are mounted inside the table 2, facing each other via the printed circuit board 1, at both ends in the X direction so as to be slidable in the horizontal direction, A cylinder 1 for vertically moving the presser member 3 is provided on the upper surface of each slide unit 10.
1 and a stopper 9 are provided. The upper part of the holding member 3 is formed with a bent portion so as to lock the top surface of the printed circuit board 1, and the stopper 9 has a circular cross-sectional shape and a bent portion that locks the top surface of the printed circuit board 1 placed on the table 2. It is configured to have a length that reaches .

Next, the operation of this embodiment will be explained with reference to FIGS. 2 to 4.

As shown in FIGS. 2 to 4, a printed circuit board 1
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 each end surface of the printed circuit board 1, Position the presser member 3. In this state, the cylinder 11 is lowered, and the presser member 3 is lowered as shown by the broken line, and presses the upper surface of the printed circuit board 1 against the table 2 with the lower surface of its bent portion. This operation prevents the both end faces of the printed circuit board 1 from rising A.

According to this embodiment, vertical movement and lifting of the printed circuit board due to pressure and separation of the pressure foot are eliminated, and influence on the reference hole into which the fixing pin is inserted is prevented, improving the dimensional accuracy and quality of the machined hole. do.

Furthermore, since the stopper moves horizontally to position the holding member, printed circuit boards of various sizes can be clamped.

[0017]

[Effects of the Invention] According to the work clamping device of the printed circuit board drilling machine of the present invention, it is possible to drill printed circuit boards of various sizes while preventing vertical movement or lifting. This eliminates the influence and improves the dimensional accuracy and quality of the machined hole.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing this embodiment.

FIG. 2 is a cross-sectional view showing the main part of FIG. 1;

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

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

FIG. 5 is a diagram showing a conventional technique.

[Explanation of symbols]

1 Printed circuit board 2 Table 3 Pressing member 8 Fixed pin 9 Stopper 10 Slide unit

Claims (3)

[Claims] 1. At least one stopper, which is provided on the table of a printed circuit board drilling machine for drilling a printed circuit board placed and positioned on a table, and which moves in a horizontal direction and comes into contact with an end surface of the printed circuit board. , and at least one holding member positioned by each stopper and movable in the vertical direction to lock the upper surface of the printed circuit board. 2. Each of the stoppers and the holding member is provided through the printed circuit board in a direction perpendicular to the direction of the fixing pin positioned at each end of the printed circuit board. Work clamp device of the printed circuit board drilling machine described. 3. The workpiece clamping device for a printed circuit board drilling machine according to claim 1, wherein each stopper and holding member are mounted on at least one slide unit.