JP2003001594A - Processing apparatus and printed board processing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed board processing machine which processes a hole with a high accuracy and which provides a processing at a lower cost. SOLUTION: A sub-plate 15 supported so as to be movable along the Y axis is provided between a clamp plate 8 and a side face 5b provided behind a hole 5. When the clamp plate 8 locates a reference pin 3 fixed on a printed board 2, then the sub-plate 15 is located at the intermediate point between the clamp plate 8 and a side face 5b provided at the right inner side of the hole 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board processing machine such as a printed circuit board boring machine for processing holes in a printed circuit board or a printed circuit board contour processing machine for processing the outer shape of a printed circuit board, and a processing device for processing thin plates. Regarding

[0002]

2. Description of the Related Art FIG. 3 is a perspective view of a conventional printed circuit board drilling machine, FIG. 4 is a front view showing a cross section of a spindle of the printed circuit board drilling machine shown in FIG. 3, and FIG. FIG. 3 is a plan view of a table of the printed circuit board boring machine.

In FIG. 3, the table 1 is supported by a guide (not shown) and is movable on the bed 20 in the X-axis direction. A cross rail 21 is fixed to the bed 20 so as to straddle the table 1. A guide 23 is provided on the front surface of the cross rail 21, and the guide 23
A cross slide 22 is supported by the. The cross slide 22 is movable in the Y-axis direction along the guide 23 by a motor 24. A guide 31 is provided on the front surface of the cross slide 22, and the base 30 is supported by the guide 31. The guide 31 is movable in the Z-axis direction by a motor 32. A saddle 33 is fixed to the front surface of the base 30, and a spindle 40 is attached to the saddle 33.
Is fixed.

As shown in FIG. 4, a drill 41 is rotatably held at the tip of the spindle 40. The pressure foot 42 fitted to the tip of the spindle 40 is movably supported in the Z-axis direction and is urged downward in the figure by an air cylinder (not shown).

A plurality of printed circuit boards 2a to be processed are placed on the lower plate 2b and mounted on the surface 1a of the table 1 in a state of being fixed integrally by two reference pins 3. Hereinafter, the printed board 2a to be processed and the lower plate 2b are collectively referred to as a printed board 2.

As shown in FIG. 5, holes (here, notched shapes) 4 and 5 are formed on the surface side of the table 1. In the hole 4 having the V-shaped groove 6 formed on one side surface,
A rectangular first clamping plate 7 is arranged. The length of the side of the clamp plate 7 in the X direction is substantially equal to the length of the side of the hole 4 in the X axis direction, and the length of the side in the Y axis direction is the clamp of the first reference pin 3a in contact with the groove 6. The length is shorter than the length from the end (right end in the figure) on the plate 7 side to the surface 4b of the hole 4 facing the groove 6 (side surface on the right side of the hole 4 in the drawing).

A second square clamp plate 8 is arranged in the square hole 5. The length of the side of the clamp plate 8 in the X-axis direction is substantially equal to the length of the side of the hole 5 in the X-axis direction, and the length of the side of the Y-axis direction is determined from the length of the hole 5 in the Y-axis direction. It is shorter than the length obtained by subtracting the diameter of the second reference pin 3b. The first and second reference pins 3a,
The diameter of 3b is the same. The clamp plates 7 and 8 are
As shown in FIG. 4, the upper surface is the surface 1 of the table 1.
It is supported by a linear guide device 9 composed of a bearing 9a and a track 9b arranged at the bottoms of the holes 4 and 5 so as to be flush with a, and is movable in the Y-axis direction by drive means (not shown). is there.

Next, the processing procedure of the conventional printed circuit board boring machine constructed as described above will be described.

First, as shown by solid lines in FIG. 5, the right side surfaces (hereinafter referred to as right side surfaces) 7b, 8b of the clamp plates 7, 8 are brought into contact with the inner side surfaces 4b, 5b of the holes 4, 5. As a result, the distance between the left side surface (hereinafter referred to as the left side surface) 7a, 8a and the groove 6 and the left inner side surface 5a of the hole 5 is maximized. Next, after placing the printed circuit board 2 on the table 1, the clamp plates 7 and 8 are moved to the left in the drawing, the first reference pin 3a is in the groove 6, and the second reference pin 3b is in the right side surface. 8a. Then, the printed circuit board 2 is positioned in the Y-axis direction while the line O connecting the centers of the two reference pins 3a and 3b is parallel to the X-axis, and is positioned in the X-axis direction by the groove 6.

In this state, the table 1 is moved in the X-axis direction and the cross slide 22 is moved in the Y-axis direction to position the drill 41 on the processed portion of the printed circuit board 2. Then, the base 30 is moved in the Z-axis direction, the drill 41 is cut into the printed circuit board 2 while the printed circuit board 2 is being pressed by the pressure foot 42, and the drilling process is performed on the printed circuit board 2.

[0011]

In the printed circuit board boring machine configured as described above, when the clamp plate 8 is moved as shown in FIG. 6 (a), the right side surface 8b of the clamp plate 8 is A gap 10 having a distance L is formed between the hole 5 and the right inner surface 5b. Note that FIG. 6 (a)
FIG. 4 is a diagram showing a state in which a printed board is being punched. When the processed portion is present on the gap 10 as described above, the printed circuit board 2 is bent by the pressing force or cutting force of the pressure foot 41 and sinks into the gap 10 as can be seen from FIG. 6A. For this reason, even if the drill 41 is cut to a predetermined depth, the depth of the hole 12 at the relevant portion is the depth of the hole 11 machined in the gapless portion of the table 1 as shown in FIG. In some cases, the drill 41 may be shallower than the above, the drill 41 may be broken during machining, or the axis of the machined hole 12 may be inclined as shown in FIG.

Therefore, conventionally, the lower plate 2b having a large plate thickness is used to increase the rigidity of the printed circuit board 2 to prevent the printed circuit board 2 from bending in the gap 10.

However, when the lower plate 2b having such a large plate thickness is adopted and subjected to drilling, the lower plate 2b used once is used.
Must be discarded, so the running cost becomes high, and the printed circuit board 2 must be expensive accordingly.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a processing apparatus and a printed circuit board processing machine which have high processing accuracy and can be processed at low cost.

[0015]

In order to achieve the above object, a first means is to provide an opening in a table on which a member to be processed is placed, and a reference pin provided in the member to be processed is provided in the opening. In a processing device that inserts and positions the reference pin on a preset inner surface of the opening to process the workpiece, a first moving member that presses the reference pin against the inner surface to perform the positioning. And a second movement for restricting a space formed between the first moving member and the inner side surface facing the preset inner side surface of the opening to a predetermined width when the positioning is performed. And a member.

In this case, the second moving member is connected to the first moving member.
Means for moving the moving member may be provided. At that time, the means for moving in conjunction with the first
It is preferable to include means for urging the moving member away from the moving member, and means for restricting the moving position when moved by the urging force of the urging means. It should be noted that the regulating means may be constituted by a member extended from the first moving member.

In the embodiment described later, the first
Of the moving member is the clamp plate 8, the second moving member is the sub plate 15, and the biasing means is the spring 18.
In addition, the restricting means corresponds to the stopper 17, and the extended member corresponds to the support portion 16 having the stopper 17 formed at the tip.

In order to achieve the above-mentioned object, the second means is a table having a substantially rectangular hole on a mounting surface on which a printed circuit board is mounted, and a table which is arranged in the hole and has a long side length. The length of the long side of the hole is substantially equal to the length of the short side, and the length of the short side is a length that is movable in the short side direction when the reference pin fixed to the printed circuit board is engaged with the hole. Equipped with a plate,
In the printed circuit board processing machine, which moves the first plate to sandwich the hole between one side surface of the hole and one side surface of the first plate to position the reference pin. The length of the side is approximately equal to the length of the long side of the hole, and the length of the short side is greater than the length obtained by subtracting the sum of the length of the plate and the diameter of the reference pin from the length of the short side of the hole. Means for supporting a short second plate between the other side of the hole and the other side of the plate;
When the first plate is moved to perform the positioning of the reference pin, the second plate is positioned so as to be located between the other side surface of the hole and the other side surface of the first plate. Means for positioning the second plate.

In the embodiment described later, the first
Plate is the clamp plate 8, the second plate is the sub plate 15, and the means for supporting the second plate between the other side surface of the hole and the other side surface of the plate is the support portion 16. The means for positioning the second plate so as to be located between the other side surface of the hole and the other side surface of the first plate correspond to the spring 18 and the stopper 17, respectively.

[0020]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a table according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
The same reference numerals are given to the respective units equivalent to the respective units of to 5, and the description thereof will be omitted.

In FIG. 2, on the right end side of the clamp plate 8 in the drawing, a support portion 16 having a stopper 17 protruding upward is integrally extended from the clamp plate 8. A sub plate 15 having a hook-shaped cross section is supported on the support portion 16 so as to be movable in the Y-axis direction. The length of the side of the sub-plate 15 in the X-axis direction is the hole 5
Is approximately equal to the length of the side in the X-axis direction, and the length of the side in the Y-axis direction is from the length of the side in the Y-axis direction of the hole 5 to the length (thickness) of the side in the Y-axis direction of the clamp plate 8. Is shorter than the length obtained by subtracting the sum of the diameters of the second reference pins 3b and, and the upper surface is flush with the surface 1a of the table. A plurality of springs 18 are arranged between the clamp plate 8 and the sub-plate 15, and urge the sub-plate 15 in a direction away from the clamp plate 8.

Next, the operation of this embodiment will be described.

When the printed circuit board 2 is placed on the table 1, the clamp plates 7 and 8 are moved to the right in the figure, and the left side surface 7a of the clamp plate 7 and the groove 6, and the left side surface 8a of the clamp plate 8 and the hole. The distance between the left inner side surfaces 5a of 5 is maximized. When the printed circuit board 2 is placed on the table 1 and the clamp plates 7 and 8 are moved to the left in the drawing, the sub-plate 15 is moved to the right in the drawing by the spring 18 and comes into contact with the stopper 17 to stop. When the clamp plate 8 positions the second reference pin 3b, the gap 10a between the clamp plate 8 and the sub plate 15 and the right inner surface 5 of the sub plate 15 and the hole 5 are formed.
The interval 10b between b becomes substantially the same value.

That is, when the moving distance of the clamp plate 8 is set to the same L as in FIG.
The distances of b are L / 2, respectively. As a result, the bending amount of the printed circuit board 2 is about 1/8 of the conventional pressing force of the pressure foot 42 or the cutting force of the drill 41.
Therefore, even if the thickness of the lower plate 2b is reduced, the printed circuit board 2 is hardly bent, and a hole having excellent straightness can be formed in the printed circuit board 2.

In this embodiment, the sub plate 15 is provided only on the hole 5 side, but it may be provided on the hole 4 side.

Although the sub-table 15 is held by the clamp plate 8, the sub-table 15 may be arranged on the rear side surface 5b of the hole 5 so as to be biased toward the clamp plate 8. .

Further, the present invention can be applied not only to the printed circuit board punching machine but also to a printed circuit board outer shape processing machine for processing the outer shape of the printed circuit board. Further, the present invention is not limited to the printed circuit board, and can be applied to all processing devices that perform predetermined processing on a thin plate with a tool.

[0029]

As described above, according to the present invention,
Since the area of the space under the tool can be reduced when machining is performed after positioning, it is possible to eliminate the influence of the space and provide a processing device with high processing accuracy and low cost can do. Further, since the thickness of the lower plate can be reduced, it is possible to provide a printed circuit board processing machine that has high processing accuracy and can be processed at low cost.

[Brief description of drawings]

FIG. 1 is a plan view of a table according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a printed circuit board boring machine.

FIG. 4 is a front sectional view in the vicinity of a conventional spindle.

FIG. 5 is a plan view of a conventional table.

FIG. 6 is a diagram illustrating a problem of the conventional technique.

[Explanation of symbols]

2 printed circuit boards 3a First reference pin 3b Second reference pin 5 holes 5a Left inner surface 5b Right inner surface 8 Clamp plate 8a Left side 8b right side 15 sub plate 16 Support 17 Stopper 18 springs

Claims (5)

[Claims] 1. A table on which a member to be processed is placed is provided with an opening, a reference pin provided on the member to be processed is inserted into the opening, and the reference pin is provided on a preset inner surface of the opening. A processing device for positioning and processing the workpiece, comprising: a first moving member that presses the reference pin against the inner surface to perform the positioning; and a first moving member that performs the positioning when the positioning is performed. A second moving member configured to regulate a space formed between the preset inner side surface and the opposing inner side surface of the opening to a predetermined width, the processing apparatus. 2. The processing apparatus according to claim 1, further comprising means for moving the second moving member in association with the movement of the first moving member. 3. A means for urging the interlocking means to move in a direction away from the first moving member, and a means for restricting a moving position when moved by an urging force of the urging means. 3. The processing apparatus according to claim 2, comprising: 4. The regulating means comprises a member extending from the first moving member.
The processing device described. 5. A table having a substantially rectangular hole formed on a mounting surface on which a printed circuit board is mounted, and a table arranged in the hole, in which a long side length is substantially equal to a long side length of the hole and a short side length is short. A first plate whose side length is movable in the direction of the shorter side when the reference pin fixed to the printed circuit board is engaged with the hole; and the first plate is moved. By
In the printed circuit board processing machine, wherein the reference pin is positioned by sandwiching it between one side surface of the hole and one side surface of the first plate, a long side of the hole is longer than a long side of the hole. A second plate having a length substantially equal to the length and having a shorter side shorter than the length of the shorter side of the hole minus the sum of the length of the plate and the diameter of the reference pin is provided on the other side of the hole. Means for supporting between the side surface and the other side surface of the plate; and when the first plate is moved to perform the positioning of the reference pin, the second plate causes the other side surface of the hole to move. A means for positioning the second plate so as to be positioned in the middle of the other side surface of the first plate, the printed circuit board processing machine.