JP3623910B2 - Corner processing machine for plate material and its control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a corner processing machine for a thin plate material, for example, a plate material for forming a corner portion of a printed board having a copper foil stretched on its surface in an arc shape in a plan view.
[0002]
[Prior art]
There has been a conventional technique described in Japanese Patent Publication No. 2-8844. That is, a movable base is disposed at a corner portion of a square plate material to be transferred and positioned, and a drive mechanism is provided for moving the movable base in the direction of substantially bisector of two sides of the plate material forming the corner. Are provided with a pair of copying pins facing each other across the moving axis and a cutter positioned outside each copying pin, and the cutter is centered on a point located on the moving axis and inward of the cutter. There is a thing provided with a turning mechanism for turning at a predetermined angle.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional one, the movable base is moved in the substantially bisector direction of the two sides of the plate material, and the pair of copying pins are brought into contact with the two sides of the corner portion of the plate material, or the cutter is rotated. When the plate is thin and its rigidity is low, the plate is deformed by being pushed by the copying pin, and the turning axis of the cutter is out of order and high-precision corner machining cannot be performed. there were. An object of the present invention is to obtain a novel plate material corner processing machine that solves the above-mentioned problems by moving a cutter in a circular arc without contacting the plate material.
[0004]
[Means for Solving the Problems]
The present invention is configured as follows to achieve the above object. That is, according to the first aspect of the present invention, the operating body and the movable base having the tool head are provided on the machine base so as to be movable in the X-axis direction orthogonal to the feeding direction of the plate material, and the operating body is moved in the X-axis direction. A servo motor to be controlled and an X-axis cylinder that urges the movable table in the X-axis direction with a predetermined force are provided, and the slider can be moved in the Y-axis direction perpendicular to the moving direction of the operating body on the machine table. A scanning cam that controls the amount of movement of the movable base in the plate material direction, and a conversion device that converts the X-axis movement of the operating body in the Y-axis direction and transmits it to the slider. It is a thing.
Further, the invention according to claim 2 is provided with a Z-axis moving body that supports the tool head so that the tool head can be moved up and down on the movable base, and a braking device that brakes the vertical movement of the Z-axis moving body. A support tool that is moved up and down by the apparatus is provided, and a height adjustment cam having an inclined cam surface that is high and low in the X-axis direction is provided on the support tool, and the Z-axis movable body can slide along the inclined cam surface. A locking tool is provided.
According to a third aspect of the present invention, an operating body and a movable base having a tool head are provided on the machine base so as to be movable in the X-axis direction perpendicular to the feed direction of the plate material, and the operating body is moved in the X-axis direction. A servo motor to be controlled and an X-axis cylinder that urges the movable table in the X-axis direction with a predetermined force are provided, and the slider can be moved in the Y-axis direction perpendicular to the moving direction of the operating body on the machine table. A scanning cam that controls the amount of movement of the movable base in the plate material direction is provided on the slider, and a conversion device that converts the X-axis movement of the operating body in the Y-axis direction and transmits it to the slider is provided. The movable base is provided with a Z-axis moving body that supports the tool head so that the tool head can be moved up and down, and a braking device that brakes the vertical movement of the Z-axis moving body. An inclined cam provided in the X-axis direction on the support The Z-axis moving body is provided with a locking tool that can slide along the adjustment cam, and processing processes such as corner processing and mark processing, cutter height adjustment process, etc. are selected. The process selection unit and the drive command unit that issues a drive command in a predetermined order to the drive unit such as the servo motor, the X-axis cylinder, the transfer motor, the braking device, and the lifting device are provided by the process selection unit. Is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic plan view showing an overall view of a processing machine according to the present invention, FIG. 2 is a side view showing one of the processing machines, and FIG. 3 is a plan view of a main part showing an initial position.
[0006]
In FIG. 1, reference numeral 1 denotes a transfer device for transferring a plate material W. A rectangular plate material W, for example, a printed board having copper foil on both sides, is placed on a pair of transfer belts 2 arranged in parallel. The plate material W is driven by a transfer motor 3 comprising a servo motor to transfer the plate material W to the right (Y-axis direction) in FIG. 4 is a guide provided on both sides of the transfer belt 2 and is moved in the contact / separation direction by the guide cylinder 4a. Reference numeral 5a denotes a front sensor, which detects when the plate material W has arrived at the guide 4 portion, extends the guide cylinder 4a, moves the guides 4 in the approaching direction, and moves the plate material W on the transfer belt. Prevent lateral slippage. Reference numeral 5b denotes a position sensor for detecting arrival of the front end and the rear end of the plate material on the transfer belt 2. At the processing position of the transfer belt 2, a pressure device (not shown) made up of a number of rollers is provided on the upper side, and the plate material W that has arrived at the processing position is pressed and held by the pressure device.
[0007]
A pair of corner processing machines 10 and 10 having substantially the same structure are disposed oppositely on both sides of the processing position of the transfer belt 2. One of them will be described as a representative. First, as shown in FIG. 3, an X-axis rail 12 extending in the X-axis (front-rear) direction orthogonal to the feeding direction of the plate material W is formed on the machine base 11 so as to be described later on the rear side of the X-axis rail 12. The operating body 13 for moving the cam 21 is slidably attached to the front side of the X-axis rail 12 with a movable base 16 supporting a cutter 27 described later spaced apart in the front-rear direction.
[0008]
The actuating body 13 is connected to a feed screw 15 extended in the X-axis direction, and the feed screw 15 is rotated forward and backward by a servo motor 14 attached to the rear side of the machine base 11 in the X-axis (front-rear) direction ( It is reciprocated in the vertical direction in FIG. The movable base 16 is urged to move in the X-axis direction with a predetermined force by an X-axis cylinder 17 attached to the machine base 11 side. A stopper 28 capable of colliding with the front surface of the actuating body 13 is screwed onto the rear surface of the movable base 16, and the movable base 16 is moved rearward by the X-axis cylinder 17 by adjusting the rearward projection amount of the stopper 28. When this is done, the initial interval between the movable table 16 and the operating body 13 is adjusted.
[0009]
Further, as shown in FIG. 3, a Y-axis rail 18 extending in the Y-axis (left-right) direction is attached to the front portion of the machine base 11, and a slider 19 is slidably attached to the Y-axis rail 18. Between the slider 19 and the operating body 13, there is provided a conversion device 20 that converts the X-axis movement of the operating body 13 in the Y-axis direction and transmits it to the slider 19. That is, the slider 19 is formed with a groove-shaped conversion cam 20a inclined at an angle of about 45 degrees to the left from the rear side toward the front side, and is attached to the front end portion of the operating body 13 on the conversion cam 20a. The 1st cam follower 20b is fitted so that rolling is possible. The conversion cam 20a may be provided on the operating body 13 side, and the first cam follower 20b may be provided on the slider 19.
[0010]
Further, a copying cam 21 for controlling the amount of movement of the movable table 16 in the plate material W direction is attached to the slider 19, and a second cam follower 22 that rolls along the copying cam 21 is attached to the front portion of the movable table 16. . As shown in FIG. 3, the scanning cam 21 is formed in a trapezoidal concave shape in plan view adjacent to the left side of the conversion cam 20a, and moves to the left (X-axis direction) from the right part toward the left part. A front stopper portion 21a that extends linearly, an arc portion 21b that curves from the front stopper portion 21a in the left-rear (XY axis) direction, and a rear stopper portion 21c that extends linearly from the arc portion 21b to the left. Form continuously.
[0011]
The front stopper portion 21a of the copying cam 21 determines an initial processing position of the movable table 16 via the second cam follower 22, that is, a position where the cutter 27 attached to the movable table 16 approaches the side surface of the workpiece W. The arc portion 21b controls the forward speed at the time of machining of the cutter 27 via the second cam follower 22, and the rear stopper portion 21c is a cutter at the end of corner machining of the plate material W via the second cam follower 22. 27 final forward positions are determined.
[0012]
As shown in FIG. 2, a Z-axis moving body 25 is attached to the above-described movable table 16 via a Z-axis rail 24 extending in the up-down direction so as to move up and down, and a tool head 26 is mounted on the Z-axis moving body 25. Install. The tool head 26 has a main shaft rotating around a vertical axis at the lower portion, and a disk-shaped cutter 27 having a V-shaped blade is detachably attached to the main shaft.
[0013]
An adjusting device for adjusting the height position of the Z-axis moving body 25 and hence the cutter 27 is provided. That is, as shown in FIG. 2, a lifting device 30 composed of a cylinder is erected on the side of the machine base 11, a support tool 31 is attached to the rod 30 a of the lifting device 30, and a height adjustment cam is attached to the support tool 31. 32 is attached. The height adjusting cam 32 is formed with an inclined cam surface 32b that gradually increases from the rear side toward the front side on the upper surface of the metal plate 32a arranged in the front-rear (X-axis) direction. On the other hand, the arm 33 is protruded from the Z-axis moving body 25 toward the adjustment cam 32, and a locking tool 34 slidable along the inclined cam surface 32b is attached to the protruding end of the arm 33. The height of the Z-axis moving body 25, and hence the cutter 27, is changed by moving the latch 34 relative to the height adjustment cam 32 in the front-rear (X-axis) direction.
[0014]
Further, a braking device 40 that brakes the vertical movement of the Z-axis moving body 25 is provided. That is, as shown in FIG. 2, the brake plate 41 is erected and fixed upward on the movable base 16, and a pair of front and rear clamping plates 42 are rotated around the Z-axis moving body 25 about the upper and lower axial centers via the hinge 43. The brake plate 41 is clamped by the clamping plate 42 so as to be movable. Then, a clamping cylinder 44 is attached to the protruding end (right end in FIG. 2) of the clamping plate 42, and both clamping plates 42 are rotated in the contact / separation direction by the clamping cylinder 44 to clamp / release the braking plate 41. To do.
[0015]
In FIG. 1, reference numeral 50 denotes a control device, a process selection unit 51 that selects a processing process such as corner processing and mark processing, a cutter height adjustment process, and the like. A drive command unit 52 is provided for instructing each drive unit such as the cylinder 17, the transfer motor 3, the guide cylinder 4 a, the clamping cylinder 44 of the braking device 40, and the lifting device 30, and a predetermined drive and drive order.
[0016]
13 to 15 show flowcharts of the control device, and FIG. 13 shows a flowchart when corner processing and mark processing are selected by the process selection unit 51. In FIG. 13, S1 to S29 are corner processing steps. In FIG. 13, when starting in S1, the transfer motor 3 is activated (high-speed rotation) in S2, and the plate material W is fed to the right in FIG. Further, in step S3, the X-axis cylinder 17 is extended to move the movable base 16, and the second cam follower 22 collides with the front stopper portion 21a of the copying cam 21 as shown in FIG. Close to W1.
[0017]
Next, in S4, the servo motor 14 is rotated forward by a predetermined number, and the slider 19 is moved rightward in FIG. 4 via the conversion cam 20a of the conversion device 20. As shown in FIG. The cam follower 22 is positioned at the rear stopper portion 21c of the copying cam 21, so that the cutter 27 protrudes so as to face the front end W2 of the plate member W as shown in FIG. On the other hand, when the plate material W is fed to the right in FIG. 1 and the front sensor 5a detects the arrival of the plate material W in S5 (ON), the guide cylinder 4a is extended in S6 to advance the guide 4, The horizontal position perpendicular to the direction of transport of the plate material W is accurately maintained.
[0018]
When the plate material W further advances, and the position sensor 5b detects (turns on) the front end W2 of the plate material in S7, the transfer motor 3 rotates at a specified speed at S8 and S9, and the servo motor 14 rotates backward by a specified number. . As a result, the plate member W is advanced at a low speed, and the slider 19 is moved to the left via the conversion cam 20a to move along the arc portion 21b of the cam 21 along the second cam follower 22 as shown in FIG. Let Then, the cutter 27 moves relative to the plate material W in an arc shape, and the front corner C1 of the plate material W is processed into an arc shape as shown in FIG. When the corner C1 is processed, the second cam follower 22 collides with the front stopper portion 21a of the copying cam 21 as shown in FIG. 6, and the cutter 27 is positioned at a position close to the side surface W1 of the workpiece W. (FIG. 8).
[0019]
Next, at S10, the servo motor 14 is stopped, the transfer motor 3 is returned to high speed rotation, and the plate material W is transferred to the right in FIG. 1 at a predetermined speed. Next, in S11, the presence / absence of mark processing is determined. If yes, the process proceeds to S22 in FIG. 14, and if not, the process proceeds to S12. Proceeding to S12, when the position sensor 5b detects (off) the passage of the rear end W3 of the plate member W, the corner processing of the rear portion is started. That is, in S13 and S14, the transfer motor 3 rotates at a specified number of low speeds, and the servo motor 14 rotates forward by a specified number. As a result, the plate material W is advanced at a low speed, and the slider 19 is moved to the right via the conversion cam 20a to move the second cam follower 22 along the arc portion 21b of the cam 21 in the opposite direction. . Then, the cutter 27 moves relative to the plate material W in an arc shape, and the rear corner C2 of the plate material W is processed into an arc shape as shown in FIG.
[0020]
When the rear corner C2 is finished, the servo motor 14 is stopped in S15 so that the cutter 27 protrudes in the direction of the plate material W. After the guide 16 is retracted in S16, the transfer motor 3 is rotated at a high speed in S17. Then, the processed plate material is taken out. Next, in S18, it is determined whether or not the corner machining process is completed. If the corner machining process is to be continued, the process jumps to S2, repeats S2 to S18, and if the above process is completed, the process proceeds to S19 and the X-axis cylinder 17 is turned on. The movable table 16 is retracted and the cutter 27 is retracted from the plate material W. At S20, the transfer motor 3 is stopped and the servo motor 14 is rotated backward to return to the original position. At S22, the corner machining is finished.
[0021]
When mark processing is selected in S11, the transfer motor 3 is rotated at a predetermined number of high speeds in S22 and S23, and then the transfer motor 3 is stopped in S24, so that a predetermined portion of the side surface W1 of the plate material W is removed. It faces the cutter 27. Next, after the servo motor 14 is rotated forward by a specified number in S25 and S26, the servo motor 14 is rotated backward by a specified number in S27 and S28 to return to the initial position for processing, and the servo motor 14 is stopped in S29. Proceed to S12.
[0022]
FIG. 15 is a flowchart when the cutter height adjustment process is selected by the process selection unit 51. In FIG. 15, S40 to S50 are each step of the height adjustment process. In FIG. 15, when starting at S40, the X-axis cylinder 17 is shortened and the movable base 16 is moved backward at S41, and the stopper 28 provided on the rear surface of the movable base 16 is connected to the front surface of the operating body 13 as shown in FIG. Collide with. Next, in step S42, the elevating cylinder 30 is extended, and the height adjusting cam 32 rises as shown in FIG. 2 and approaches the lower surface of the locking tool 34 of the Z-axis moving body 25.
[0023]
Next, in S43, the clamping cylinder 44 is released (extension operation), the Z-axis moving body 25 is detached from the brake plate 41 and descends due to its own weight, and the locking tool 34 is the inclined cam surface 32b of the height adjusting cam 32. Abut. Next, in S44, the servo motor 14 is rotated forward to advance the operating body 13, and the movable base 16 is advanced against the reaction force of the X-axis cylinder 17 via the stopper 28. As a result, the locking tool 34 slides on the upper surface of the height adjusting cam 32, and the movable table 16 is raised while moving forward. In S45, the rotation speed of the servo motor 14 is counted, and when this reaches the specified rotation speed, the servo motor 14 is stopped in S46. The prescribed rotational speed of the servo motor 14 is set in advance corresponding to the thickness of the plate material W. As a result, the height of the Z-axis moving body 25, and hence the height of the cutter 27, is adjusted so as to be the center position of the thickness of the plate material W.
[0024]
Next, in S47, the clamping cylinder 44 is actuated to clamp the brake plate 41, and the Z-axis moving body 25 is fixed to the movable table 16 side via the brake plate 41. Next, in step S48, the elevating cylinder 30 is shortened to move the adjustment cam 32 down and away from the locking tool 34. In step S49, the servo motor 14 is rotated backward to return to the original position. In step S50, the height adjustment process is completed. To do.
[0025]
【The invention's effect】
As is clear from the above description, the invention according to claim 1 is provided with an operating body and a movable base having a tool head on the machine base so as to be movable in the X-axis direction perpendicular to the feed direction of the plate material. The movement is controlled by a servo motor, the movable base is moved and urged in the X-axis direction by the X-axis cylinder, the slider is moved in the Y-axis direction by the operating body via the conversion device, and the slider is moved to the plate direction of the movable base. Since the scanning cam for controlling the amount of movement to is provided, it is possible to perform curved corner processing with high accuracy by a simple control device. Further, since the movement control of the carter can be performed without contacting the plate material, even a thin plate material can perform curved corner processing with high accuracy.
According to a second aspect of the present invention, there is provided a Z-axis moving body that supports the tool head to be movable up and down on the movable base, and a braking device that brakes the vertical movement of the Z-axis moving body. Since an adjustment cam for adjusting the vertical movement of the Z-axis moving body by moving the moving body in the X-axis direction is provided, a single servo motor is used for high-precision curved surface machining and high-precision tool head height adjustment. Can be performed.
Further, the invention according to claim 3 can automatically perform these by selecting each process such as a corner process, a mark process, a cutter height adjusting process, etc., and has high productivity. Become.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an overall view of a processing machine according to the present invention.
FIG. 2 is a side view showing one processing machine according to the present invention.
FIG. 3 is a plan view of a principal part showing an initial position.
FIG. 4 is a plan view of relevant parts showing a state at the start of machining.
FIG. 5 is a plan view of a main part in a state in which a second cam follower is in contact with a rear stopper of the copying cam.
FIG. 6 is a plan view of a main part in a state in which a second cam follower is in contact just before the arc portion of the copying cam.
FIG. 7 is an explanatory plan view showing a cutter position at the start of front corner machining.
FIG. 8 is an explanatory plan view showing a cutter position at the end of front corner machining.
FIG. 9 is an explanatory plan view showing a cutter position at the start of rear corner machining.
FIG. 10 is an explanatory plan view showing the cutter position at the end of rear corner machining.
FIG. 11 is a plan view of a main part showing a state when the height of the cutter is adjusted.
FIG. 12 is an explanatory plan view showing a cutter moving state during mark processing.
FIG. 13 is a flowchart of a corner processing step.
FIG. 14 is a flowchart of a mark processing step.
FIG. 15 is a flowchart of a height adjustment process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Transfer apparatus 2 Transfer belt 3 Transfer motor 4 Guide 4a Guide cylinder 5a Front sensor 5b Position sensor 10 Corner processing machine 11 Machine stand 12 X axis rail 13 Actuator 14 Servo motor 15 Feed screw 16 Movable stand 17 X axis cylinder 18 Y Shaft rail 19 Slider 20 Conversion device 20a Conversion cam 20b First cam follower 21 Follow cam 21a Front stopper portion 21b Arc portion 21c Rear stopper portion 22 Second cam follower 24 Z-axis rail 25 Z-axis moving body 26 Tool head 27 Cutter 28 Stopper 30 Lift Equipment (lifting cylinder)
30a Rod 31 Supporting tool 32 Height adjusting cam 32a Metal plate 32b Inclined cam surface 33 Arm 34 Locking tool 40 Braking device 41 Braking plate 42 Holding plate 43 Hinge 44 Holding cylinder 50 Control device 51 Process selection unit 52 Driving command unit

Claims (3)

An operating body (13) and a movable base (16) having a tool head (26) are provided on the machine base (11) so as to be movable in the X-axis direction perpendicular to the feeding direction of the plate material, and the operating body (13) is provided. A servo motor (14) that controls movement in the X-axis direction and an X-axis cylinder (17) that moves and urges the movable table (16) in the X-axis direction with a predetermined force are provided on the machine base (11). The slider (19) is provided so as to be movable in the Y-axis direction orthogonal to the moving direction of the operating body (13), and the slider (19) is adapted to control the amount of movement of the movable base (16) in the plate material direction. Corner processing of a plate material provided with a cam (21) and a conversion device (20) for converting the X-axis movement of the operating body (13) in the Y-axis direction and transmitting it to the slider (19) Machine. A Z-axis moving body (25) that supports the tool head (26) so as to be movable up and down on the movable base (16), and a braking device (40) that brakes the vertical movement of the Z-axis moving body (25) are provided. A height adjusting cam having a support tool (31) that is moved up and down by an elevating device (30) on the machine base (11), and having an inclined cam surface (32b) that is high and low in the X-axis direction. The plate material according to claim 1, wherein the Z-axis moving body (25) is provided with a locking tool (34) slidable along the inclined cam surface (32b). Corner processing machine. An operating body (13) and a movable base (16) having a tool head (26) are provided on the machine base (11) so as to be movable in the X-axis direction perpendicular to the feeding direction of the plate material, and the operating body (13) is provided. A servo motor (14) that controls movement in the X-axis direction and an X-axis cylinder (17) that moves and urges the movable table (16) in the X-axis direction with a predetermined force are provided on the machine base (11). The slider (19) is provided so as to be movable in the Y-axis direction orthogonal to the moving direction of the operating body (13), and the slider (19) is adapted to control the amount of movement of the movable base (16) in the plate material direction. A cam (21) is provided, a conversion device (20) for converting the X-axis movement of the operating body (13) in the Y-axis direction and transmitting it to the slider (19) is provided, and a tool head is provided on the movable base (16). A Z-axis moving body (25) that supports (26) in a vertically movable manner; A brake device (40) that brakes the vertical movement of the Z-axis moving body (25), and a support tool (31) that is moved up and down by the lifting device (30) on the machine base (11) side. (31) is provided with a height adjustment cam (32) having an inclined cam surface (32b) that is high and low in the X-axis direction, and the Z-axis moving body (25) is slidable along the adjustment cam. (34), a process selection section (51) for selecting a processing process such as corner processing and mark processing, a cutter height adjustment process, and the like, and the servo motor (14), X by the process selection section (51) A drive command unit (52) that issues a drive command in a predetermined order is provided in the drive unit such as the shaft cylinder (17), the transfer motor (3), the braking device (40), and the lifting device (30). Control device for corner processing machine for plate material.

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