JPS6023922B2 - Multi-axis processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-axis processing device for drilling a large number of holes in a workpiece such as a printed circuit board.

The closest example to this device is a multi-spindle drilling machine, but the conventional Tato drilling machine was as follows. That is, one spindle drive motor is installed in a frame that can be lowered quickly, and a large number of spindles are rotationally driven by the drive motor via a universal joint, and the position of each spindle can be adjusted via an attachment or the like. Then, the drill is chucked onto a desired spindle, and each spindle is adjusted to the desired position to drill a hole, so that multiple holes can be drilled simultaneously at one time. However, although this conventional multi-spindle drilling machine can drill many holes at the same time, it can only drill a certain number of holes in a certain position, and if the coordinates of the holes change, the There are inconveniences such as having to re-set the drill and requiring a great deal of time and effort to set the drill. The present invention provides a completely new multi-axis processing device that eliminates the above-mentioned disadvantages, and is characterized by being supported slidably in the vertical direction on a support plate provided on a support frame. and a plurality of hole-drilling means facing the processing table, a push-down shaft standing up on each hole-drilling means, a movable plate that can be raised and lowered by a predetermined stroke in the vertical direction with respect to the support plate, and a movable plate that is driven to raise and lower the movable plate. a driving means for moving up and down together with the movable plate and a connecting means capable of being connected to each of the push-down shafts;
An electromagnetic selective driving means is provided for connecting or uncoupling each connecting means to the pressing shaft, and the connecting means corresponding to the hole-drilling means at the desired position is connected to the pressing koji. In this way, the electromagnetic selection drive means is controlled via an external drive signal, and by lowering the movable plate, the drilling means at the position where the hole is to be drilled is lowered to perform a desired process such as drilling. It's located where I left it.

An embodiment of the present invention will be described below.

In FIGS. 1, 2, and 3, reference numeral 1 indicates a fixed guide rail, and a support frame 2 having a box-shaped structure is mounted on the guide rail so as to be vertically movable.

On the back side of the support frame 2, an elevating drive means 3 for driving the support frame up and down is disposed on a skirting frame (not shown). As shown in the third diagram, the elevating drive means 3 includes a drive motor 3a, a reduction gear device 3C that decelerates the rotation of its output gear 3b, a feed screw 3e rotated by a gear 3d of the reduction gear device 3C, and a feed screw 3e. It consists of a feed plate 3f fixed to the support frame 2 and having a female thread (not shown) that engages with a screw. A support plate 4 is fixed to the lower end of the support frame 2, and a large number (120 holes in this embodiment) of hole-drilling means 5 are supported on the support plate so as to be slidable in the vertical direction. It is urged upward by a spring 6.

The perforating means 5 are regularly arranged in a staggered matrix (see FIG. 7) in the plane direction. Each hole drilling means 5
A push-down shaft 7 having a substantially rectangular cross section is fixed to the center of the upper surface and extends upward. In this embodiment, each drilling means 5 includes a drive motor 5a, a spindle 5b thereof, and a drill 5d attached to the spindle via a collet chuck 5C.
It is composed of. As shown in FIGS. 2 and 3, four guide posts 8 are installed in the center step of the support frame 2, and a movable plate 9 is attached to the guide posts.
is slidable.

Therefore, the first elevating drive means for elevating and lowering the movable plate 9 will be explained. IDa is a drive motor, and 10b is a transmission device incorporating a drive cam 10C that rotates by the outside of this drive motor.

The transmission device 10b is fixed to the back side of the support frame, and the drive motor oa is fixed to the back side of the transmission device 10b. Inside the transmission device 10b is an L-shaped drive lever 10d.
is swingably supported, and the follower 1 of the drive lever 10d
0e is engaged with the drive cam 10c. 10f is a connecting rod whose lower end is connected to the drive lever 10d, and the upper end of this connecting rod 10f is connected to one 10g of the swing levers 10g and 10h forming the toggle link mechanism.

One end of each swing lever 10g, 10h is connected to the support frame 2.
It is fixed to rotating shafts 10j, 10j which can be freely rotated. A transmission lever 10k is attached to the rotating shafts 10j and 10J.
The upper ends of the press links 101 are rotatably connected to the distal ends of the transmission levers 10k. The lower end of each pressing link 101... is a connecting pin 10m attached to the plate 9.
It is rotatably connected to... Further, on the lower surface of the movable plate 9, there is a connecting means 11 that corresponds to the push-down shaft 7 (that is, the hole-drilling means 5) and that moves up and down together with the movable plate 9.
is installed.

A support plate 13 fixed to the support frame 2 via a mounting plate 12 is located above the movable plate 9. Mounting angles 14, 1 arranged on the upper surface of the support plate 13
An electromagnetic selection driving means 15 for operating each connecting means 11 is installed between the four connecting means 11. Therefore, a more detailed configuration and positional relationship of the push-down shaft 7 of each hole punching means 5, the connecting means 11, and the electromagnetic selection drive means 15 will be explained.

Since all of these configurations are the same, one of them will be explained. As shown in FIGS. 4 and 5, the connecting means 11 is composed of a connecting lever 11a and its rotating shaft 11b.

The connecting lever 11a is arranged between two holding plates 16, 16 which are arranged parallel to the lower surface of the movable plate 9, and the rotating shaft 11b is rotatably supported by the movable plate 9.
The electromagnetic selection drive means 15 consists of two rotary solenoids 15a, 15b and their operating shaft 15c.
I7 is a coupling provided at the upper end of the rotating shaft 11b, and this coupling controls the rotation of the operating shaft 15c from the rotating shaft 1.
1b, but it is freely movable in the axial direction with respect to the operating shaft 15c. As shown in FIG. 6, a connecting groove 7a is formed at the upper end of the push-down shaft 7, in which a connecting lever 11a can be locked, and the connecting bar 11a is connected to a rotary solenoid 15a.
As shown by the solid line, the connecting groove 7a is filled with iron by the operation of
When the rotary solenoid 15b is actuated, it is removed from the connecting groove 7a as shown by the chain line. Further, as shown in FIG. 5, the movable plate 9 is provided with a through hole 9a into which the push-down shaft 7 can be inserted. Further, in FIG. 1, 18 is a workpiece, 19 is a processing table on which this workpiece is reloaded, 20 is a gripping device provided on the XY table 20a and grips the front end of the workpiece, and 21 is a front row This is a release means for pulling only the hole-drilling means 5 upward by a certain amount.

Before explaining the structure of the relief means 21, the arrangement of the hole-drilling means 5 and the feeding of the workpiece 18, that is, the XY table 20a, to the hole-drilling means 5 will be explained. The arrangement of the perforating means 5 has been briefly mentioned in the above description, but will be described in detail here again. As shown in the seventh diagram, the hole-drilling means 5 are arranged in a row in the Y direction with 1 bar at an interval of 5 sterns, and in a row of brackets in the X direction at 42.5 sq.
They are lined up in two rows, and each row is a staggered matrix arrangement in which each row is shifted by a half pitch. The workpiece 18 is moved by the XY table 20a with respect to the hole-drilling means 5 arranged in this manner in the following manner. FIG. 7 shows the relative positional relationship between the workpiece 18 at the start position and the drilling means 5, and the chain line 18a is the area to be drilled. From this state, in this embodiment, the workpiece 18 is first fed in the Y direction intermittently at a pitch of 2.5 pitches, and when the feed in the Y direction reaches 47.5 pitches, the workpiece 18 is fed in the -X direction at a pitch of 2.5 pitches. 5 skin feed, this time 47 interludes at 2.5 rib pitch in the 10Y direction
．． Send up to 5 skins. Similarly, the feed in the X direction is 40.
．． Continue until you reach the end of Misaki. This covers the entire processing area 18a of the workpiece 18.

By the way, the first row a of the even numbered columns. ,2,a,,4...
... When the hole-drilling means 5 at the position a,,,2 processes the lower side of the processing area 18a of the workpiece 18, the first row a,,,,a,,3 of the odd-numbered column...・a. ,,． The position drilling means 5 is located outside the processing area I8a of the workpiece 18. That is, it is located at a position facing the gripping device 20 that grips the front end portion of the workpiece 18. In such a state, the relief means 21 shown in the first figure
...a,,,. This is a mechanism for retracting the hole punching means 5 at the position (hereinafter referred to as the front row) upward to a position where the two gripping devices do not come into contact with each other, and its configuration will be described below with reference to FIGS. I will explain about it. As shown in FIG. 8, a block 22 is disposed at the inner bottom of the support frame 2 and extends horizontally in parallel between the drilling means 5.

This block 22 regulates the retreating position of the drilling means 5 on its lower surface, but the drilling means is placed sideways at the position facing the drilling means 5 in the front row, as shown in FIG. 9. An escape hole 22a is provided to allow for a release. Escape hole 22
A spacer 21a is disposed inside a so as to be slidable left and right,
The retracted position of the hole punching means 5 in the front row is normally regulated by the spacer 21a. A support plate 23 is arranged at a predetermined height on the upper part of the block 22, and a plunger 21b is installed on this support slope. A bracket 21c is attached to the lower surface of the support plate 23, and an L-shaped release lever 21d is swingably supported on this bracket.
One end of the relief lever 21d faces the operating shaft 21e of the plunger 21b, and the other end faces the window hole 21 of the spacer 21a.
It is engaged with f. In addition, 21g has the subesa 21a as the eighth
This is a spring that pulls to the right in the figure, and the same spring is also provided at the pond end of the subesa 21a. Therefore, when the plunger 21b operates, its operating shaft 21e
protrudes and pushes the release lever 21d, causing the release lever 21a to
moves to the left in FIG. 9 against the spring 21g. By shifting the spacer 21a, the drilling means 5 is fitted into the relief hole 22a by the return spring 6 shown in the first figure. In this return state, the drill 5d of the drilling means 5 in the front row is in a position where it does not come into contact with the gripping device 20' of the workpiece 18. Next, the return means 2 returns the relief means 21 to its original state.
4 will be explained.

In FIG. 1 and FIG. 3, the mounting ankle 14...
A support plate 25 fixed to the support plate 13 is installed above the support plate 13, and a plunger 24a of the return means 24 is installed on the upper surface of this support plate. On the lower surface of the support plate 25,
A bracket 24b is fixed, and one end of a swing lever 24c is rotatably supported by this bracket. The operating shaft 2 of the plunger 24a is located at the center of the swing lever 24c.
4d are opposed to each other, and a pressing shaft 24e is connected to the other end. The pressing shaft 24e passes through the mounting angles 14, 14 and the support plate 13, and reaches into the through hole 9a of the movable plate 9 as shown by the chain line in FIG. It engages with the upper surface of the presser kettle 7. When the first hole punching means 5 is located in the relief hole 22a due to the operation of the relief means 21, the hole is released. When the J plunger 24a is operated, its operating shaft 24d protrudes and the swing lever 24c swings. The pressing shaft 24e is lowered by the swinging of the swinging lever 24c, and the pressing shaft 7 of the drilling means 5 is pressed down by the lower end surface of the pressing shaft 24e. When the upper surface of the drilling means 5 is lower than the lower surface of the base plate 21a shown in FIG. 9 J,
The spacer 21a enters the upper surface of the drive motor 5a by the spring force of the spring 21g, and
is again held at the same height as the other drilling means by this spacer 21a. In FIGS. 1, 2, and 8, reference numerals 26, . . . indicate electrical wiring (not shown) connected to the drive motor 5a of each drilling means 5.

), and 27... is a pipe that passes through the drive motor 5.
This is an air pipe that sends cooling air to a, and both are made of flexible tubes. air pipe 2
7... are collectively connected to the common ventilation duct 28... installed on the flock 22 for each row. Next, the structure and attachment state of the workpiece pressing plate 29 below the support plate 4 will be explained. As shown in the second figure, an air cylinder 31 is fixedly installed on the movable plate 9 via a bracket 30, and a rod 31a of this cylinder slidably passes through the support frame 2 and the support plate 4 and extends from the bottom surface thereof. It stands out. Rod 31a
A holding plate 32 is attached to the lower end of the holding plate 32, and this holding plate holds both sides of the workpiece holding plate 29. Holding plate 32
is freely slidable upward relative to the rod 31a, and is urged downward by a spring 33. As will be described in the operation description below, the air cylinder 31 is used only when attaching and detaching the drill 5d, and normally only moves up and down together with the movable plate 9. Further, as shown in the first figure, a sealing plate 34 is fixed to the lower surface of the support plate 9. A sealing material 35 such as a sponge that is in contact with the outer surface of the workpiece holding plate 29 is attached to the inner surface of the sealing plate 34, and a space 36 between the lower surface of the support plate 4 and the workpiece holding plate 29 is sealed. . 10th
As shown in the drawings and FIG. 11, a hole 37 is bored in the workpiece holding plate 29 in correspondence with the hole-drilling means 5, and a holding piece 38 is slidably moved upward into this hole. It matches. The presser piece 38 has a hole 39 through which the drill 5d penetrates, and an air release groove 40 extending on both sides is formed at the lower end of the hole 39, and an air release groove 40 on the lower surface of the workpiece holding plate 29 is formed. It is being carried to 29a. Note that 41 is a coil spring that springs the presser piece 38 downward, and 42 is a spring presser fixed to the upper surface of the workpiece presser plate 29. The spring force of the spring 41 is set to be weaker than that of the spring 33 in FIG. Next, the operation will be explained. The workpiece 18 is sent intermittently in the Y direction and the X direction by the xY table 20a shown in the first figure, and the relative position of the workpiece 18 with respect to the drilling means 5 is displaced. .

On the other hand, the central processing unit that controls this apparatus stores coordinate data of holes to be drilled in the workpiece 18 in advance, and the drive motor 5a of the drilling means 5 is constantly driven. ×Y
A drive signal is sent from the central processing unit to the electromagnetic selection drive means 15 every time the table 20a is moved one step. That is, a drive signal is sent to the upper plunger 15a of the electromagnetic selection drive means 15 of the drilling means 5 that matches the coordinate data, and a drive signal is sent to the lower plunger 5b of the remaining electromagnetic selection drive means. and each operates. The connecting means 11 operated by the plunger 5a rotates to the solid line position in FIG. 6 via the coupling 17 shown in FIG.
They are rotated to the dashed line position and held in that position.
In other words, only the connecting means 11 corresponding to the drilling means 5 that matches the given coordinate data fits into the connecting groove 7a of the push-down shaft 7, and the remaining connecting means 11 come off from the connecting groove 7a of the push-down shaft 7. is held in the correct position.

Next, when a drive signal is sent from the central processing unit to the drive motor 10a of the first drive means 10, the drive cam 10c, drive lever 10d, connecting rod 10f, and drive lever 10g are activated.
, 10h, rotating shafts 10i, 10j, transmission lever 10k.
. . . The movable plate 9 descends along the guide post 8 via the pressing link 101 . When the movable plate 9 descends, the cylinder 31 fixedly installed on the movable plate and its rod 31a also descend together.

Therefore, the workpiece holding plate 29 rests on the upper surface of the workpiece 18 as shown in the twelfth figure. Since the rod 31a is still lowered, the workpiece holding plate 29 presses the workpiece 18 evenly over the entire surface by the force of the spring 33, and the workpiece 18 is pressed evenly over the entire surface.
8. Correct the warp. At this time, the presser piece 38 is lifted slightly upward against the spring 41. Furthermore, as the movable plate 9 descends, the connecting means 11 on its lower surface simultaneously descends, so that the push-down shaft 7 is in the connected state shown in solid lines in FIG.
Only the drilling means 5 connected to this push-down shaft is the return spring 6.
It descends by a predetermined stroke against the

The remaining drilling means 5 remain in the position shown in the first illustration. That is, only the drilling means 5 at a position matching the given coordinate data is lowered, and the drill 5d penetrates the workpiece 18 to make a predetermined hole. During this drilling process, the cooling air sent from the air pipe 27 to the drive motor 5a is
It passes through the interior and is discharged from its lower end into the space 36 shown in the first diagram. The air sent into the space 36 flows through the hole 39 of the presser piece 38 of the workpiece presser plate 29 as shown in Figure 12.
through which the air is ejected toward the air release groove 40, and the drill 5d
The chips 43 generated by the rotation of the machine are blown away. The chips 43 are then discharged to the outside together with the air through the air escape groove 29a. Therefore, the attachment of chips to the drill 5d, that is, clogging, will not occur, and the drive motor 5a will not be overloaded and the drill 5d will not break. When the movable plate 9 descends to the lowest position and the predetermined drilling process is completed, the movable plate 9 begins to rise, and when it returns to its original position, the drive motor 10a stops.

As the movable plate 9 rises, all mechanisms such as the drilling means 5 and the workpiece holding plate 29 return to their original positions as shown in the first figure. Thereafter, the same operation as described above is repeated every time the workpiece 18 is fed one step by the XY table 20a, and holes are drilled at predetermined positions in the workpiece 18 one after another. In addition, in the above-mentioned drilling operation, a., 2'a, '4 shown in FIG.
．． ．． ...a,,, the drilling means 5 at the 2 position is the workpiece 18
When machining the lower side of the machining area 18a, a drive signal is sent from the central processing unit to the plunger 21a of the relief means 21 shown in FIGS. pulls you deeper. Therefore, even if the movable plate 9 is lowered, the drill 5 of the hole-drilling means 5 in the first row
d does not come into contact with the gripping device 20'.

When attaching or detaching the drill 5d, follow the steps below.

First, the drive motor 3a shown in the third figure is started, and the feed screw 3 is
e to raise the support frame 2 along the guide rail to a desired height. When the air cylinder 31 is then operated, the rod 31a extends downward and the workpiece holding plate 29 descends. As a result, the drill 5d is exposed and there is sufficient free space below the drill 5d, so that the drill 5d can be attached or removed.

Note that the cutter set on the chuck 5c of the hole-drilling means 5 may be an end mill instead of the drill 5d.

If the workpiece 18 is a multi-chip original plate on which a large number of printed circuit boards are simultaneously printed, an end mill can be used to cut the original plate into predetermined printed circuit boards. Furthermore, the hole-drilling means 5 referred to in the present invention includes not only a type that performs the hole-drilling process using a rotating blade such as a drill, but also a type that performs the hole-drilling process using a punching pin by applying press technology, for example. . According to the multi-axis drilling device of the present invention described in detail above, some of the numerous drilling means are movable with the electromagnetic selective driving means and the connecting means operated by the electromagnetic selective driving means. Since we have made it possible to drill holes by selectively descending with a plate, etc., all you have to do is input the coordinate data for drilling holes into the central processing unit, and the rest will be fully automated, allowing a large number of machines to drill holes. Drilling can be completed in an extremely short time.

In particular, with this device, even if the shape, size, hole position, etc. of the workpiece changes, there is no need to reset the position of the drill unlike with conventional multi-spindle drilling machines, and the operator is free to use it. The burden is significantly reduced. In addition, since each hole-drilling means is arranged in a staggered matrix, each mechanism can be organized in a space-efficient manner, making the entire device more compact, and making it possible to cover the entire machining area of the workpiece with less movement of the XY table. can.

Further, since the electromagnetic selection drive means is fixed on the support frame, the load on the movable plate elevating and lowering drive means is reduced, and the movable plate can be quickly moved up and down.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which "Figure 1 is a side sectional view thereof, Figure 2 is a front sectional view thereof, Figure 3 is a plan sectional view thereof, and Figure 4 is an electromagnetic selective drive. 5 is a sectional view taken along line V-V in FIG. 4, FIG. 6 is a sectional view taken along line W- in FIG. 8 is an enlarged plan view of the drilling means and relief means, FIG. 9 is an enlarged side view of the relief means, FIG. 10 is an enlarged sectional view of section A in FIG. 1, and FIG. Fig. 10 is a sectional view taken along line M-X, and Fig. 12 is an enlarged sectional view of main parts in the state of drilling. 1... Guide rail, 2... Support frame, 3... ...Lifting drive means, 4...Support plate, 5...Drilling means, 7...Pushing shaft, 9...Movable plate, 10... Lifting drive means , 11... Connection means, 15... Electromagnetic selection drive means, 18... Workpiece material, 19... Machining table, 20... Gripping device, 20a... ...XY
Tefle. Figure 4 Figure 5 Figure 6 Figure 12 Ship chart N Boat chart ship Figure 7 Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] 1. A support frame disposed above the processing table;
a support plate provided on the support frame; a large number of hole-drilling means supported vertically slidably on the support plate and facing the workpiece on the processing table; a push-down shaft that stands up; a movable plate that can be raised and lowered by a predetermined stroke in the vertical direction above the support plate; a lifting drive means that is supported by the support plate and drives the movable plate up and down; a connecting means that moves up and down and can be connected to each of the push-down shafts; and an electromagnetic device that is electromagnetically actuated by an external drive signal to selectively connect or disconnect the connecting means with respect to the push-down shaft. A multi-axis processing device having a selection drive means. 2. The multi-axis processing device according to claim 1, wherein the drilling means are arranged in a staggered matrix. 3. The multi-axis processing device according to claim 1, wherein a rotary solenoid is used as the electromagnetic selection drive means. 4. The multi-axis type machining according to claim 1, wherein the drilling means comprises a drive motor, a spindle rotated by the drive motor, and a drill attached to the spindle via a chuck. Device. 5. The multi-axis processing device according to claim 1, wherein the support plate is movable up and down.