JP3023217B2 - Processing machines for panels, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing machine for panels and the like, and more particularly to a processing machine for cutting a window opening or a passage opening from a wooden wall panel or the like.

[0002]

2. Description of the Related Art As a processing machine for chamfering, cutting or engraving a panel-like workpiece such as a wooden plywood, there is a woodworking milling machine known as a router. These processing machines position a work table for supporting a panel-shaped workpiece such as a wooden plywood, a bit for processing a workpiece placed on the table, and a bit at a predetermined position on the workpiece of the table. And a carriage movable horizontally along the support frame and vertically moving the bit toward and away from the workpiece.

[0003]

Generally, in a prefabricated house, an opening portion such as a window is formed in a factory by the above-described processing machine in a wooden plywood wall panel or the like. The above-mentioned processing machine is convenient because it can be processed automatically.
However, these processing machines require a pattern or data that serves as a fixed reference, regardless of whether the machine is a controlled machine or a numerically controlled machine, and a large number of reference patterns and data must be prepared according to the type of processing.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a machine for processing a panel-like workpiece such as a wooden plywood, which does not require a reference pattern or data, has a simple structure, and can perform desired processing accurately. is there.

[0005]

According to the present invention, there is provided a work table for supporting a panel-shaped work such as a wooden plywood, and an opening formed in a part of the work placed on the work table. A bit for cutting or forming a chamfer on the side surface of the workpiece to form a workpiece, a horizontal support frame for supporting the bit on the workpiece on the table, and supported by the support frame. A processing machine, such as a panel, having a carriage that is horizontally movable along a support frame and positions a bit with respect to a workpiece, and vertically moves so as to be separated from and approaching the workpiece. The frame is movably mounted on a pair of longitudinally extending rails on the side of the work table, and the carriage is movably mounted along rails provided on the support frame. A first support member, a second support member vertically movably attached to the first support member, and a third support member attached to the second support member to support the bit. Wherein the longitudinal position of the bit relative to the workpiece is determined by movement of the support frame, the bit position transverse to the workpiece is determined by movement of the first support member of the carriage, and the vertical movement of the bit is determined by movement of the second support member. The third support member supporting the bit can be displaced with respect to the second support member when the bit for processing the workpiece comes into contact with a hard part such as a bar in the workpiece and receives a reaction force therefrom. And a processing machine for a panel or the like, characterized by being provided with a sensor for detecting this displacement.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, a processing machine 1 for processing a panel-like workpiece such as a wooden plywood according to the present invention includes:
Work table 2 for supporting a work and a carriage 3 for supporting a bit for processing a work placed on the work table 2
And a horizontal support frame 5 that supports the carriage 3 so that the bit is positioned at a predetermined position on the work 4 on the work table 2. The work table 2 is preferably provided with a link mechanism 6 whose width can be changed according to the width of the workpiece 4 to be supported.

The support frame 5 is formed in a bridge shape by a horizontal girder portion and legs extending vertically from both ends of the girder portion. The lower ends of the legs are formed on a side surface of the work table 2 by a pair of rails extending in the longitudinal direction. 8 is attached so as to be movable in the longitudinal direction of the work table (the left-right direction in FIGS. 1 and 2). In order to perform this movement, a driving means such as a motor 9 is provided at the lower end of one leg of the support frame 5 and meshes with a rack provided on the work table 2. Accordingly, the support frame 5 can be moved in the longitudinal direction of the work table 2 by turning on / off the supply of electric power to the motor or by controlling the power transmission control means such as a clutch. The carriage 3 can be positioned in the longitudinal direction.

The details of the carriage 3 are shown in FIGS.
This will be described with reference to FIG. The carriage 3 is mounted movably in a direction crossing the work table along a pair of rails 12 provided on the side surface of the girder portion 11 of the support frame 5. For this movement, the carriage 3 is provided with a belt supporting pin 14 (FIG. 4) for supporting the drive belt 13 and moving the carriage 3 with the movement of the drive belt. The carriage 3 is composed of several members. That is, the carriage 3 has a first support member 16 movably attached to the rails 12, 12 through bearings 15, 15, and a lifting rail 17 provided on the first support member 16 via the guide 18. It comprises a second support member 19 mounted movably in the vertical direction along the rail 17, and a third support member 22 mounted on the second support member 19 and supporting the bit device 21. The third support member 22 is also movably attached to a rail 23 provided on the lower surface of the second support member 19 via a guide 24 (FIG. 5). The bit device 21
It has a bit 25 extending at its lower end, and this bit is rotationally driven by driving means such as a motor provided inside the apparatus. Since the bit device 21 is well known, further description will be omitted.

As described above, the first support member 16 can move in the direction traversing the work table along the rail 12 of the support frame girder 11, and this movement is performed by the belt 13 and the pin 14.
The driving of the belt 13 is performed by means such as a motor (not shown). The second support member 19 can move vertically along the rail 17 of the first support member 16, so that the pneumatic cylinder 27 is fixed below the first support member 16 as shown in FIG. The tip of the piston rod 28 is attached to the bracket 29 of the second support member 19, and the piston rod 28 is
The third support member 19 is lowered, the bit device 21 is lowered, and the bit 25 can process the workpiece at the imaginary line position. That is, the longitudinal position of the bit 25 with respect to the workpiece 4 (FIG. 1) is determined by the support frame 5 moving on the rail 8 of the table 2, and the position of the bit 25 in the direction across the workpiece on the work table 2 is The first support member 16 of the carriage 3 is determined by moving on the rail 12 of the support frame 5, and the pneumatic cylinder 27 is driven to move the bit 25 toward and away from the work 4 on the work table 2. Can be moved vertically.

As shown in FIGS. 3 to 5, the second support member 19 and the third support member 22 are provided with a rail 23 and a guide 24 at the ceiling portion of the third support member 19 so that both members are provided. The work table 2 is connected so as to be relatively movable in the longitudinal direction. Two pneumatic cylinders 31 and 32 are fixed to the lower surface of the ceiling 30 of the second support member 19 so as to absorb the shock due to the acceleration at the time of the relative movement and not to increase the amount of the movement. The distal ends of the piston rods 33 and 34 are always in contact with the upper bracket 36 of the ceiling 35 of the third support member 22. Therefore, the relative movement or displacement of the two members is limited by the presence of these cylinders. If the displacement can be limited, not only a pneumatic cylinder but also a means such as a coil spring or a dashpot may be used. As shown in FIG. 4, these pneumatic cylinders 31 and 32 are mounted in opposite directions so as to be able to cope with both left and right movements, that is, displacements. The third support member 22 supporting the bit device 21 is moved by the bit device, which has been moved together with the support frame 5 when the bit 25 for processing the workpiece comes into contact with a hard part such as a bar in the workpiece. When displaced by receiving a force, a sensor for detecting the displacement is provided on the lower surface of the ceiling 30 of the second support member 19 for each cylinder. This sensor is formed of, for example, a magnetic sensor, and detects displacement when a bracket 36 provided on the ceiling of the third support member 22 reaches the sensor position. These positions are indicated by points 3 in FIG.
Reference numerals 8 and 39 are used. The sensor for detecting such a displacement may be any other sensor such as a mechanical sensor such as an optical sensor or a limit switch.

The operation of cutting out an opening for a window on a workpiece 4 such as a wooden plywood wall panel placed on a work table 2 by using the processing machine 1 for a panel or the like having such a configuration will be described. FIG. 6 shows a locus 40 along which the first support member 16 moves when opening the window in the workpiece 4. A broken line 41 shown so as to substantially surround the trajectory 40 is a crosspiece provided in a workpiece forming an opening for a window.

First, the workpiece 4 is fixed to the work table 2, and the support frame 5 moves on the table rail 8,
The longitudinal position of the bit 25 is determined, and the first position of the carriage 3 is determined.
The support member 16 moves on the rail of the support frame spar 11 to determine the lateral position of the bit 25 and positions the bit at position A in FIG. After this positioning, the first support member 1
The bit device 21 is lowered by operating the pneumatic cylinder 27 of No. 6, and the bit 25 is made to penetrate the workpiece 4 to make a hole at the position A. Hold the carriage 3 as it is to the support frame girder 1
Then, the support frame 5 is moved to the position B from the position B, and the support frame 5 is moved to the point C from the position B on the table rail 8. During the movement to the point C, the bit 25 comes into contact with a crosspiece indicated by a broken line 41. By this contact, the bit 25 is stopped, whereas the carriage 3 is moved in the direction of the point C together with the support frame 5.
Therefore, the reaction force acts on the bit device 21, and the third support member 22 supporting the bit device 21 relatively moves with respect to the second support member 19, and resists the pressing force of the pneumatic cylinder 32. Then, the bracket 36 is moved to the sensor position 39, and the displacement thereof can be detected. This bit device 2
1 is a force obtained by adding the weight of not only the carriage 3 but also the support frame 5, for example, 500 k
Since there is a mass of g, the carriage 3 moves to the point C due to the inertial force even if it attempts to stop immediately after detecting the displacement.

Therefore, the bit 25 must release friction with a hard material such as a crosspiece. Therefore, as soon as the displacement is detected by contacting the crosspiece, the point C
The first support member 16 and the second support member 19 that have moved to are stopped there and then returned to the point D. This return can be obtained, for example, by reversing the motor 9 of the support frame 5 for a certain period of time, so that heating due to friction can be prevented. Next, the carriage 3 is moved laterally along the support frame 5 from the position of the point D toward the point E. During this movement, since the support frame 5 is stopped and the carriage 3 is only moved independently, the weight is about 30 kg at most, and the reaction force is small even if it comes into contact with the beam at the point E. Accordingly, the inertial force at this point is small, and if the movement of the carriage 3 is stopped by a signal from a sensor (for example, a torque limiter) that detects the reaction force received at the point E, the carriage 3 remains at the point E as it is. . The stop mechanism at this position can also be configured by detecting the stop of the pulse from the drive belt by the stop by a slip clutch or the like.

When the point E is detected, the support frame 5
Is moved toward the right point F in the longitudinal direction of FIG. At a position halfway to the point F, the bit 25 comes into contact with the crosspiece 41, and the reaction force due to the inertial force between the carriage 3 and the support frame 5 causes the bit device 21.
To move the bracket 36 to the sensor position 38 against the pressing force of the pneumatic cylinder 31 and detect the displacement thereof. The reaction force for displacing the bit device 21 is also large, and there is a fear that the bit may rub against the pier or the decorative surface at a high speed and burn that portion. Stop and return to point G. Next, the carriage 3 is moved laterally along the support frame 5 from the position of the point G toward the point H. The movement of the carriage 3 is stopped by a signal from a sensor that detects the reaction force received at the point H, and the support frame 5 is moved toward a point I which is the last stroke. In this case as well, at a position halfway to point I, the bit 25 abuts on the crosspiece 41, and the reaction force due to the inertial force of the carriage 3 and the support frame 5 acts on the bit device 21, and the pneumatic cylinder 32 Bracket 36 against the pressing force
Is moved to the sensor position 39 and its displacement is detected. The support frame 5 immediately moved to the point I by inertia force
Is stopped, and is largely moved in the return direction to a point J away from the crosspiece 41. Since the position of the point J is the end of the window opening cutout operation, the reverse rotation time of the motor is increased.

Although the above-described processing is for forming an opening for a window, the processing machine according to the present invention can also be used for processing for chamfering a side surface of a plywood panel. The bit 25 may be moved along the side of the plywood panel.

[0016]

According to the processing machine of the present invention, the support frame is movably mounted on a pair of rails extending in the longitudinal direction on the side surface of the work table, and the carriage is mounted on the rail provided on the support frame. A first support member movably mounted along the first support member, a second support member vertically movably mounted on the first support member, and a second support member mounted on the second support member to support the bit. A third support member, wherein the longitudinal position of the bit relative to the workpiece is by the movement of the support frame, the bit position in the direction across the workpiece is by the movement of the first support member of the carriage, and the vertical movement of the bit is the second movement. The third support member, which is determined by the movement of the support member and supports the bit, is configured to support the bit when the bit for processing the workpiece comes into contact with a hard part such as a bar in the workpiece and receives a reaction force therefrom. It is mounted so that it can be displaced with respect to the member, and a sensor that detects this displacement is provided, so the control of the bit is extremely simple, and it has a simple configuration that does not require reference patterns or data. However, desired processing can be accurately performed. In particular,
Since the relative displacement between the third support member supporting the bit and the second support member is detected, the processing operation can be performed extremely easily.

[Brief description of the drawings]

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

FIG. 2 is a front view of the processing machine according to the present invention.

FIG. 3 is a front view of the carriage according to the present invention.

FIG. 4 is a plan view of a part of the carriage according to the present invention, which is cut off.

FIG. 5 is a side view of the carriage according to the present invention.

FIG. 6 is a view showing the movement of a bit of the processing machine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing machine 2 Work table 3 Carriage 4 Workpiece 5 Support frame 8 Rail 9 Motor 11 Frame girder 12 Rail 13 Drive belt 14 Pin 15 Bearing 16 First support member 17 Elevating rail 18 Guide 19 Second support member 21 Bit device 22 Second device 3 support member 23 rail 24 guide 25 bit 27 pneumatic cylinder 28 piston rod 30 ceiling of second support member 31, 32 pneumatic cylinder 33, 34 piston rod 35 ceiling of third support member 38, 39 sensor position 40 first support Movement trajectory of members 41 Crosspiece

Claims (2)

(57) [Claims] 1. A work table for supporting a panel-like workpiece such as a wooden plywood, a bit for performing a cutting process for forming an opening in a part of the workpiece placed on the table, and the table. A horizontal support frame that supports the bit to be positioned on the workpiece, and is supported by the support frame and is horizontally movable along the support frame to position the bit relative to the workpiece. And a processing machine such as a panel provided with a carriage for vertically moving so as to be separated from and attached to the workpiece. The support frame is movably mounted on a pair of rails extending in a longitudinal direction on a side surface of the work table. The carriage has a first support member movably mounted along a rail provided on the support frame, and a vertical support member mounted on the first support member. A second support member mounted to be movable in the direction, mounted on said second support member,
A third support member for supporting the bit, wherein the longitudinal position of the bit relative to the workpiece is determined by the movement of the support frame, and the bit position in the direction transverse to the workpiece is determined by the movement of the first support member of the carriage. The directional movement is determined by the movement of the second support member, and the third support member, which supports the bit, receives the reaction force when the bit for processing the workpiece comes into contact with a hard part such as a bar in the workpiece. And a sensor mounted so as to be displaceable with respect to the second support member, and a sensor for detecting the displacement is provided. 2. The processing machine according to claim 1, wherein the third support member is moved relative to the second support member when the bit comes into contact with the crosspiece and receives a reaction force when opening the window on the workpiece. When the sensor is displaced and the displacement is detected by the sensor, the support frame and the first support are moved so that the displacement is eliminated.
A processing machine wherein the member and the second support member are moved.