JP2012232367A - Method of cutting wide and thick plate by circular saw cutting machine, and circular saw cutting machine suitable for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and efficiently cut out a blank with a width which is smaller than the overall length and the overall width of a work from a wide and thick plate using a circular saw cutting machine.SOLUTION: A work W is clamped by a conveying vice device 15, moved forward to a cutting line CL and positioned, fixedly clamped by a primary vice device 13, and cut out by a circular saw blade (primary finished product cutout step). The primary finished product W1 cut out through the primary finished product cutout step is taken out, and the conveying vice device 15 is moved back while the work W is being clamped (secondary machining preparation step). The primary finished product which is taken out is set in such a manner that the lateral one end face thereof abuts on the front end face of the uncut portion of the work W clamped by the conveying vice device 15 after the secondary machining preparation step, clamped by the primary vice device 15, and cut out by the circular saw blade (secondary finished product cutout step).

Description

  The present invention relates to a circular saw cutter for cutting a plate material into a fixed size.

  2. Description of the Related Art Conventionally, a circular saw cutting machine equipped with a constant-size feeding device has been used to manufacture a blank for processing by cutting a steel material.

  There is a desire to obtain a blank by further cutting the cut piece after cutting a wide thick steel plate into a certain length with this type of circular saw cutting machine.

  In response to such a demand, as shown in FIG. 8A, the horizontal table 5 on which the panels 3a and 3b are placed is provided, and the panel is moved forward and backward by a cross beam-like pusher 6 having a pick-up element 16 for grasping the rear edge of the panel. This is a device that moves in the direction and cuts by the saw device 7 at the front end of the table, and has a function of rotating and re-gripping the panel by the rotating device R, and cutting the panel vertically and horizontally and dividing it into small plates. A plate material cutting device that can be used has been proposed (Patent Document 1).

  As shown in FIG. 8B, the device of Patent Document 1 cuts a wooden panel to a small size to obtain a small panel (FIG. 4j → 4k), and then rotates the original material and moves the small panel. Uses a processing method with the procedure of vertically clamping with the right gripping tool (FIG. 4l) and positioning operation (FIG.4m → 4o) to cut the vertically oriented small panel further smaller. It is.

Japanese translation of PCT publication No. 2001-513040 (FIG. 1, 2, 4j to 4o)

  According to the apparatus of Patent Document 1, since the original material is unclamped in order to subdivide a small panel, it is necessary to re-clamp the original material again after the subdivision operation is completed. become.

  In addition, when a blank with a width smaller than the full width is cut from a thick steel plate instead of a lightweight material such as a panel, a rotating device for rotating the original material becomes a large scale, and the cost of the device increases significantly. Resulting in.

  Accordingly, a first object of the present invention is to use a circular saw cutter to accurately and efficiently cut a blank having a width shorter than the entire length of a workpiece and smaller than the entire width from a wide thick plate. The second object of the present invention is to provide an apparatus capable of executing the first object without increasing the apparatus cost.

In order to achieve the first object, a method for cutting a wide and thick plate by a circular saw cutting machine according to the present invention comprises a main vice device for clamping a workpiece in the vicinity of a cutting position by a circular saw blade, A cutting method for cutting a blank having a width that is shorter than the entire length of the workpiece and smaller than the entire width, using a circular saw cutting machine having a conveying vise device for performing a back-and-forth movement for positioning, The following processes are performed in order.
(A) A primary work product cutting step in which a workpiece is clamped by the conveying vice device, moved forward toward the cutting line, positioned, clamped by the main vice device, and then cut by the circular saw blade.
(B) A secondary processing preparation step in which the primary processed product cut out after the primary processed product cutout step is taken out, and the transfer vice apparatus is moved backward while the workpiece is clamped.
(C) The one end face in the width direction of the taken out primary processed product is made to abut against the front end face of the uncut portion of the work that has been clamped by the conveying vice apparatus after the secondary processing preparation step. A secondary product cut-out step for setting and clamping the main vice device and cutting with the circular saw blade.

  According to the method for cutting a wide thick plate by the circular saw cutting machine of the present invention, after the wide thick plate is cut in the width direction with a circular saw blade to obtain a primary processed product, the remaining workpiece is clamped. By retreating the conveying vise device, positioning for subdividing the primary processed product in the length direction of the original material can be accurately executed.

The circular saw cutting machine of the present invention made to achieve the second object executes a main vice device for clamping a workpiece in the vicinity of a cutting position by the circular saw blade, and a longitudinal movement for positioning the workpiece. And a conveying vise apparatus for carrying out, and further comprising the following configuration.
(1) The main vice device has a front end at a position near the rear of the cutting line so that a workpiece can be clamped at two positions, a front position and a rear position, which are centered on a cutting line by the circular saw blade. And a rear vise installed so that the position immediately in front of the cutting line is a fixed position at the time of cutting, each of the rear vice and the front vise is an independent clamp In addition to being configured to be able to perform an unclamping operation, it is also configured to be independently movable in the front-rear direction, and when the circular saw blade is returned to the standby position after the cutting operation, the cutting piece is It must be configured so that a retracting operation can be performed to widen the gap between the cut surfaces in the clamped state.
(2) The conveying vise device advances and retracts along the front-rear direction orthogonal to the cutting line in a state where the workpiece is clamped, thereby performing retraction during positioning and cutting operation of the circular saw blade. Be configured to run.
(3) As a control system, an operation panel for inputting various machining conditions and commands, a fluid cylinder for clamping and a servomotor for forward and backward movement of the transfer vice device, a fluid cylinder for clamping the rear vise, and a front cylinder A fluid cylinder for clamping and a servo motor for back and forth movement, a circular saw motor to which the circular saw blade is mounted, and a headstock for moving the headstock in which the circular saw motor is installed in a direction along the cutting line. Provide a control device that controls the servo motor and these devices to input and output signals and execute the cutting operation according to the control program.
(4) A control program for executing the following processing procedure is installed in the control device as the control program.
(4-1) Positioning of the workpiece when cutting the primary workpiece by determining the advance amount from the input primary workpiece cutting dimension and outputting a command to advance the conveying vice device based on the advance amount It has processing steps to execute the operation.
(4-2) A retraction amount is determined from the input secondary workpiece cutting dimension, and a command for cutting the secondary workpiece is output by outputting a command to retreat the conveying vice device based on the retraction amount. A processing step for executing the positioning operation is provided.
(4-3) When causing the headstock to perform a return operation to the original position after completion of cutting, in the primary processing, the rear vice of the main vice apparatus is unclamped, and the main vice apparatus A command for executing a retracting operation to increase the gap between the cut surfaces of the workpiece by the forward movement of the front vice and the backward movement of the conveying vice apparatus, and in the secondary processing, the conveying vice apparatus And a command for executing a retracting operation to increase the gap between the cut surfaces of the workpiece by the forward movement of the front vice and the rearward movement of the rear vice of the main vice device. It has processing steps to output.

  According to the circular saw cutting machine of the present invention, the primary processing for cutting the wide thick plate in the width direction by the processing step (4-1) can be performed with high accuracy, and the primary processed product thus manufactured is Set one end face in the width direction so that it abuts against the front end face of the uncut portion of the workpiece that is still clamped by the conveying vise apparatus that has been retracted in the direction away from the cutting line by the processing step (4-2). By clamping to the main vice apparatus, the positioning of the secondary processed product can be executed accurately and efficiently. In addition, by performing the retracting operation according to the processing step (4-3), the cut surface of the blank of the final product manufactured through the primary processing and the secondary processing may be damaged unnecessarily, or a circular saw blade Will not be damaged.

  In addition, the retracting operation in the primary processing and the secondary processing can be achieved by a small amount of forward movement and backward movement, for example, 5 mm forward and 5 mm backward. Here, the rearward movement amount of the conveying vice apparatus in the secondary processing is, for example, when the rearward movement amount of the rear vice in the retraction operation is 5 mm, a retraction amount larger than 5 mm is commanded, and the rear vice retraction operation is performed. It should be set so that it does not disturb.

Here, in the circular saw cutting machine of the present invention, the processing step (4-2) can be configured as either (4-2-1) or (4-2-2).
(4-2-1) for determining the secondary work product cutting dimension itself as the retraction amount, and outputting a command to retreat the conveying vice device based on the retraction amount to cut the secondary work product. It is configured as a step to execute the workpiece positioning operation.
(4-2-2) “Whole work width” − “Secondary workpiece cutting dimension” is determined as the retraction amount, and a command for retreating the conveying vice device based on the retraction amount is output to perform the secondary operation. It is configured as a step for executing a positioning operation of a workpiece for cutting a workpiece.

  When the processing step (4-2-1) is employed, the rear side of the cutting line is a secondary processed product, and when the processing step (4-2-2) is employed, the front side of the cutting line is a secondary processed product. It becomes.

Furthermore, in the circular saw cutting machine of the present invention, when the processing step (4-2) is configured as the processing step (4-2-2), by providing the following processing steps, the accuracy can be improved. Good secondary processed products can be manufactured with good yield.
(4-4) When a command to execute the secondary machining is input again after the first secondary machining is performed, the secondary workpiece cutting dimension is determined as the advance amount, and based on the advance amount A step of outputting a command to advance the conveying vice device and executing a workpiece positioning operation for cutting the second and subsequent secondary workpieces.

  When the processing step (4-2) is configured as the processing step (4-2-1), the secondary processed product on the rear side of the cutting line is taken out and the remaining primary processed product is clamped again to the conveying vise device. By setting it so as to abut the front end surface of the uncut portion of the workpiece as it is and clamping it to the main vice device, it is possible to manufacture highly accurate secondary processed products one after another.

  According to the present invention, a blank having a width shorter than the entire length of the workpiece and smaller than the entire width can be accurately and efficiently cut out from the wide thick plate using a circular saw cutter, and the cost of the apparatus is increased accordingly. Will not be invited.

The cutting device of Example 1 is shown, (A) is the schematic of a mechanical structure, (B) is a block diagram of a control system. It is a flowchart of the primary process control routine which the cutting device of Example 1 performs. It is a flowchart of the secondary process control routine which the cutting device of Example 1 performs. FIG. 3 is a schematic diagram showing a blank manufacturing procedure by the cutting apparatus of Example 1. It is a flowchart of the secondary process control routine which the cutting device of Example 2 performs. 10 is a flowchart of a machining control routine as a first modification. 10 is a flowchart of a machining control routine as a second modification. It is explanatory drawing of a prior art.

  Hereinafter, embodiments of a circular saw cutter suitable for carrying out the cutting method of the present invention will be described.

  Embodiment 1 of the present invention will be specifically described below with reference to the drawings.

  As shown in FIG. 1A, the cutting device according to the first embodiment includes a main vice device 13 for clamping and fixing a workpiece in the vicinity of a cutting position by a circular saw blade, and a constant-size feed of the workpiece. A transport vise device 15.

  The main vice device 13 is for performing a clamping / unclamping operation by a clamping cylinder, and clamps a workpiece at two positions, a nearest front position and a nearest rear position around a cutting line CL by a circular saw blade. It is configured to be able to. Specifically, the main vice device 13 is installed so that the rear vise 30 installed with the position immediately behind the cutting line CL as the front end and the position immediately before the cutting line CL set as the fixed position for cutting. The front vise 40 is provided.

  The rear vise 30 includes a fixed jaw 31 and a movable jaw 32, and has a structure in which the workpiece is clamped by moving the movable jaw 32 toward the fixed jaw 31 by a hydraulic cylinder. Similarly, the front vise 40 includes a fixed jaw 41 and a movable jaw 42, and has a structure in which the workpiece is clamped by moving the movable jaw 42 toward the fixed jaw 41 with a hydraulic cylinder.

  As a feature of the present embodiment, the rear vice 30 and the front vice 40 are configured to be able to execute independent clamping and unclamping operations. Further, as a further feature, the rear vise 30 and the front vice 40 are configured to be independently movable in the front-rear direction, and the cutting piece is clamped when the circular saw blade is returned to the standby position after the cutting operation. The rear vice 30 can move 5 mm backward, and the front vice 40 can move 5 mm forward to perform a retraction operation to widen the gap between the cut surfaces.

  The conveying vise device 15 includes a fixed jaw 51 and a movable jaw 52, and has a structure in which the workpiece is clamped by moving the movable jaw 52 toward the fixed jaw 51 by a hydraulic cylinder. Moreover, the conveyance vice apparatus 15 is configured so as to be able to execute a constant-size feeding operation along a guide bar extending in the front-rear direction.

  The forward and backward movements of the conveying vice device 15 and the front vice 40 are controlled by a servo motor and a screw feed mechanism, respectively.

  The cutting apparatus according to the first embodiment has a configuration as shown in FIG. 1B as a control system. The control device 100 is configured to receive a signal from the operation panel 80. The control device 100 also clamps the hydraulic cylinder 53 and the forward / backward movement servo motor M15 for the conveying vice device 15, the hydraulic cylinder 33 for clamping the rear vice 30, the hydraulic cylinder 34 for moving in the front and rear direction, and the front vise 40. The control signal is output to the hydraulic cylinder 43 for moving, the hydraulic cylinder 44 for moving in the front-rear direction, the circular saw motor 11 for the circular saw cutter, and the servo motor M11 for moving the headstock. An encoder signal is input from each servo motor M15, M11, and a stroke signal is input from each hydraulic cylinder 33, 34 or the like.

  The operation panel 80 is used for inputting various setting conditions and the like, and is provided with an input keyboard 82 for inputting various information.

  The control device 100 includes a control circuit 110 and a storage device 120. The control circuit 110 is configured by a computer, and the storage device 120 is configured by a hard disk or the like. The computer constituting the control circuit 110 executes processing based on a control program for controlling the sizing cutting operation, an arithmetic processing program for calculating the sizing feed amount based on information input from the input keyboard 82, and the like. .

  Next, the case where the blank of the fixed mass for forging is manufactured from a workpiece | work (thick steel plate) using the cutting device of an Example is demonstrated.

  First, preparation work will be described. This work is executed by the operator operating the operation panel 80.

  First, the workpiece is set on the conveying vice device 15 and the clamping cylinder 53 is caused to perform a rod protruding operation. As a result, the workpiece is clamped by the transfer vice device 15 and can be transferred in the front-rear direction with an accurate amount of movement.

  Next, the servo motor M15 for conveying vise performs a forward movement, and the front end portion of the work is moved to the end cutting position. Further, the cylinders for clamping 33 and 43 of the main vice device 13 are caused to perform a rod protruding operation, and the front end portion of the workpiece at the end cutting position is clamped. Thereafter, the circular saw motor 11 is driven, and the headstock servo motor M11 is caused to start advancing operation to perform end cutting.

  When the end cutting is thus completed, only the rear vice 30 of the main vice device 13 is unclamped, and the front vise 40 is slightly advanced with the workpiece front end clamped, and the transfer vice device 15 is also slightly clamped with the workpiece clamped. The retracting operation is performed to increase the gap between the cut surfaces of the workpiece by retreating only by the distance. When the retracting operation is completed, the headstock is returned to the original position.

  When the headstock returns to the original position, the front vice 40 is moved back to the position immediately after cutting, and the conveying vice device 15 is also moved forward to the position immediately after cutting. Then, the front vice 40 is caused to perform an unclamping operation, and the end material cut from the workpiece by the end cutting is removed.

  When the end cutting is thus completed, the operator inputs the cutting dimension of the primary workpiece from the keyboard 82 and operates the operation panel 80 to start machining. Thereby, the control apparatus 100 performs the control process shown in the flowchart of FIG. 2, and the cutting operation of the primary workpiece is executed.

  The control device 100 stores the primary workpiece cutting dimension input from the keyboard 82 in the storage device 120 (S100) and then advances the conveying vice device 15 by using the primary workpiece cutting dimension as an advance amount. A command is output to M15 (S110). When it is determined that the forward movement is completed by the encoder signal from the servo motor M15 (S120: YES), the control device 100 outputs a command to stop the servo motor M15 and clamps the hydraulic cylinders 33 and 43 for clamping the main vice device 13. A command for executing the clamping operation is output (S130).

  Next, the control device 100 waits for a signal indicating the completion of clamping from the hydraulic cylinders 33 and 34 (S140: YES), drives the circular saw motor 11 and sends it to the servomotor M11 for the headstock. A command is output so as to start the forward movement (S150). When the encoder signal indicating completion of the forward movement operation is input from the servo motor M11 (S160: YES), the control device 100 unclamps only the rear vice 30 of the main vice device 13, and the front vise 40 includes the front end of the workpiece. Advancing only a little (5 mm) while clamping the part, and also moving the conveying vice device 15 slightly (5 mm) with the workpiece clamped to execute a retracting operation to increase the gap between the cut surfaces of the workpiece. A command is output (S170).

  Further, when the control device 100 determines that the retracting operation has been completed based on the stroke signal from the hydraulic cylinder 44 and the encoder signal from the servo motor M15 (S180: YES), it outputs a stop command to the servo motor M15. A command to start the backward movement is commanded to the servomotor M11 for moving the headstock (S190).

  When the control device 100 determines that the headstock has returned to the original position based on the encoder signal from the servo motor M11 (S200: YES), it outputs a stop command to the circular saw motor 11 and the servo motor M11. A return command is issued to the hydraulic cylinder 44 and the servo motor M15 to retract the front vice 40 to the position immediately after cutting and to move the transport vice device 15 to the position immediately after cutting (S210).

  Then, when the control device 100 determines that the front vice 40 and the conveyance vice device 15 have returned to the positions immediately after cutting by the stroke signal from the hydraulic cylinder 44 and the encoder signal from the servo motor M15 (S220: YES)) A stop command is output to the servo motor M15, and a command for causing the front vice 40 to execute an unclamping operation is output to the hydraulic cylinder 43 for clamping (S230).

  When it is determined that the unclamping is completed upon receiving a stroke signal from the hydraulic cylinder 43 for clamping (S240), a standby state is waited for a command to be input from the operation panel 80 (S250).

  When the primary processed product having a predetermined length is obtained from the wide thick steel plate by the above series of operations, the operator takes out the primary processed product, inputs the cutting dimension of the secondary processed product from the keyboard 82, and operates the operation panel 80. To prepare for secondary processing.

  As a result, the control device 100 shifts to the secondary processing control routine of FIG. 3, stores the secondary workpiece cutting dimension input from the keyboard 82 in the storage device 120 (S300), and then executes the secondary processing control routine. A command is output to the servo motor M15 so as to retract the conveyance vice apparatus 15 with the workpiece cutting dimension as the retraction amount (S310). If the controller 100 determines that the backward movement has been completed based on the encoder signal from the servo motor M15 (S320: YES), the controller 100 outputs a command to stop the servo motor M15 (S330). Wait for input (S340).

  The operator rotates the primary workpiece taken earlier by 90 degrees, abuts the rear end surface against the front end surface of the material clamped by the conveying vice device 15, and then operates the operation panel 80 to start secondary processing. Is commanded.

  When the secondary machining start is thus commanded (S340: YES), the control device 100 outputs a command for causing the hydraulic cylinders 33 and 43 for clamping of the main vice device 13 to perform a clamping operation (S350). ) Waiting for a signal indicating clamping completion to be input from the hydraulic cylinders 33 and 34 (S360: YES), the circular saw motor 11 is driven and the headstock servo motor M11 starts a forward operation. A command is output to (S370). Then, when an encoder signal indicating completion of the forward movement operation is input from the servo motor M11 (S380: YES), the control device 100 clamps the rear vise 30 and the front vice 40 of the main vice device 13 and the transport vice device 15. In this state, the servo motor M15 of the transfer vice device 15 outputs a reverse command with a reverse amount larger than the reverse amount of 5 mm at the time of the retraction operation. A forward command and a 5 mm backward command are output to the forward / backward hydraulic cylinder 34 of the rear vice 30 (S390). As a result, the retraction operation for preventing the interference with the cut surface when the circular saw is restored is smoothly executed without the retraction operation of the rear vice 40 being obstructed by the workpiece W clamped to the conveying vise device 15. The

  Further, when the control device 100 determines that the retracting operation has been completed based on the stroke signal from the hydraulic cylinders 34 and 44 and the encoder signal from the servo motor M15 (S400: YES), a stop command is issued to the servo motor M15. At the same time, the servo motor M11 for moving the headstock is commanded to start the backward movement (S410).

  When the control device 100 determines that the headstock has returned to the original position by the encoder signal from the servo motor M11 (S420: YES), the front device 40, the rear device 30 and the transport device 15 are immediately after cutting. A command for advancing to the position is output to the hydraulic cylinders 34 and 44 and the servo motor M15 (S430).

  Then, the control device 100 determines that the rear vice 30, the front vice 40, and the conveyance vice device 15 have returned to the positions immediately after cutting by the stroke signals from the hydraulic cylinders 34 and 44 and the encoder signal from the servo motor M15 ( (S440: YES), a command for causing the rear vice 30 and the front vice 40 to perform the unclamping operation is output to the respective clamping hydraulic cylinders 33 and 43 (S450).

  When it is determined that the unclamping is completed by receiving a signal indicating the completion of the backward movement from the clamping hydraulic cylinders 33 and 43 (S460), a standby state is waited for a command to be input from the operation panel 80 (S470).

  By the series of operations described above, the rear end side of the primary processed product is cut out as a secondary processed product. The operator takes out both the front part and the part of the secondary processed product. If the front portion is still long enough to cut out the secondary processed product, the rear end surface is abutted against the front end surface of the material clamped by the conveying vice device 15 and then the operation panel 80 is operated. Then, command to resume secondary machining. On the other hand, when the extracted front portion has a length that is insufficient to cut out the secondary processed product again, the operation panel 80 is operated to instruct the end of the secondary processing.

  When the secondary processing restart is instructed (S470: secondary processing restart), the control device 100 executes the processing from S350 onward. On the other hand, when the end of secondary machining is commanded (S470: completion of secondary machining), the process returns to S250 and enters a standby state.

  When machining is commanded in the standby state of S250 (S250: machining command), it is determined whether the machining command is primary machining or secondary machining (S260). If it is determined that the command is for primary processing (S260: primary processing), the control processing from S110 onward is executed again. On the other hand, when it is determined that the machining command is a secondary machining command (S260: secondary machining), the process proceeds to S310. On the other hand, when the end of processing is instructed (S260: end of processing), a command for retracting the conveying vice device 15 to the origin position and unclamping the workpiece is output (S270). As a result, the remaining material can be taken out from the conveying vise device 15.

  By using the cutting apparatus of the present embodiment having the above control processing capability, the work W1 is cut out from the workpiece W, and the work W2 that is the final product is cut out from the work W1. The procedure shown in the schematic diagram of FIG. 4 can be performed.

  The operator sets the workpiece W on the transfer vice device 15 and operates the operation panel 80 to cause the clamping cylinder 53 to execute the rod protruding operation to prepare. Next, the conveying vice 15 is advanced so that the front end of the workpiece W is in an end cutting state that protrudes slightly forward from the cutting line CL. This operation is executed by the operator performing operations such as operating the operation panel 80 and inputting the advance amount. In addition to the numerical value input, the setting to the end cutting position may be an apparatus configuration in which the front end of the workpiece W is detected by a photoelectric sensor or the like and can be automatically executed.

  When the front end portion of the workpiece W is moved to the end cutting position in this way, the operator operates the operation panel 80 to cause the clamping cylinders 33 and 43 of the main vice apparatus 13 to perform the rod protruding operation. Accordingly, the workpiece W can be set in a state where the front end portion protrudes slightly forward from the cutting line CL.

  When the workpiece W is set in the end cutting position in this way, the operator operates the operation panel 80 again to drive the circular saw motor 11 and start the headstock servo motor M11 to move forward to execute end cutting. To do.

  When the end cutting is completed in this way, the operator operates the operation panel 80 to unclamp only the rear vice 30 of the main vice apparatus 13 and advances the front vice 40 slightly while keeping the front end of the work clamped. The conveying vice device 15 also retracts a little while keeping the workpiece clamped, and executes a retracting operation to increase the gap between the cut surfaces of the workpiece. When the retracting operation is completed, the headstock is returned to the original position.

  When the headstock returns to the original position, the operator operates the operation panel 80 to move the front vice 40 back to the position just after cutting, and the transport vice device 15 also moves forward to the position just after cutting. Furthermore, the unclamping operation is executed by the front vice 40, and the end material cut from the workpiece W by the end cutting is removed.

  As described above, the operation during this time may be a method of inputting a procedure from the operation panel 80 step by step as described above. For example, the operation similar to the control processing from S110 to S230 in the primary machining control routine is performed. An operation panel 80 may be provided with a “cut-off command switch”.

  When the end cutting is thus completed, the operator inputs the cutting dimension of the primary workpiece from the keyboard 82 and operates the operation panel 80 to start machining. As a result, the control device 100 executes the control process shown in the flowchart of FIG. 2, the conveying vice device 15 conveys the workpiece W forward by the cutting dimension of the primary workpiece, and stops, and the main vice device 13 moves the workpiece W. A series of operations including clamp fixing, cutting with a circular saw, retraction, return of the circular saw, and release of the clamp with the main vice device 13 are automatically executed, and the primary workpiece W1 is manufactured (see FIG. 4A). .

  In this way, when the primary processed product W1 having a predetermined length is obtained from the wide thick steel plate, the operator takes out the primary processed product W1, inputs the cutting dimension of the secondary processed product from the keyboard 82, and operates the operation panel. 80 is commanded to prepare for secondary processing. As a result, the control device 100 executes the operations of S300 to S330 of the secondary machining control routine, and, contrary to the primary machining, the conveyance vice device 15 conveys the workpiece W backward by the cutting dimension of the secondary workpiece. The secondary machining preparation operation is automatically executed in which the front end of the workpiece W clamped on the conveying vise apparatus 1 is moved to a position retracted from the cutting line CL by the size of the secondary workpiece. Therefore, the operator rotates the primary processed product taken out 90 degrees, and sets the rear end face so as to abut against the front end face of the workpiece W clamped by the conveying vice device 15 (see FIG. 4B). .

  When the primary workpiece W1 has been set on the front end surface of the material in this way, the operator operates the operation panel 80 to instruct the start of secondary processing. Then, the control apparatus 100 performs the control process of S350-S450, and a cutting operation is performed so that the rear end side of the primary workpiece W1 becomes the secondary workpiece W2 (see FIG. 4C).

  The secondary processed product W2 manufactured in this way has the width of the cutting dimension input for the primary processing, and is accurately cut out as a blank having the length of the cutting dimension input for the secondary processing. .

  In this embodiment, after obtaining the first secondary processed product W2 in this way, the secondary processed product W2 in an unclamped state and the remaining W3 of the primary processed product are temporarily taken out, and the primary processed product remaining W3 is used as a workpiece. The second secondary processed product W2 can be cut out from the remaining portion W3 by setting so as to abut against the front end face of W. At this time, when the operator gives an instruction to resume the secondary machining from the operation panel 80, the control device 100 executes the control process of S350 and below without executing the secondary machining preparation operation (S310 to S330). . Thereafter, the same work is repeated until the primary processed product remaining portion W3 becomes shorter than the secondary processed product W2, and the secondary processed product W2 is cut out.

  After the secondary processed product W2 can no longer be cut out from the remaining portion W3, the operator commands the primary processing from the operation panel 80, so that the operations after S110 of the primary processing control routine are executed, and the next primary processed product W1. Is cut out. Hereinafter, by repeating the above-described operation until the primary processed product W1 cannot be cut out from the workpiece W, it is possible to continue manufacturing the blank with high accuracy.

  As described above, according to the first embodiment, the cutting dimensions of the primary processing and the cutting dimensions of the secondary processing are input at the beginning of the work, and the operation of the operation panel 80, the setting of the material, and the product By executing the removal, a blank having a width smaller than the full width can be accurately and efficiently manufactured from the thick steel plate without increasing the apparatus cost.

  Next, a second embodiment of the present invention will be described. The cutting device of the second embodiment is the same as that of the first embodiment in the device configuration including the control system. Further, the primary machining control routine is configured in the same manner as in the first embodiment. In the secondary processing in the second embodiment, a program for performing control processing as described below is provided in consideration of the width of the workpiece W.

  As shown in FIG. 5, the control device 100 stores the secondary workpiece cut dimensions inputted by the operator from the keyboard 82 in the storage device 120 (S500), and then performs secondary machining from the width B of the workpiece W. A length X obtained by subtracting the product cutting dimension L2 is calculated (S510). Here, the width B of the workpiece W may be given by keyboard input, or may be automatically measured from the stroke amount of the clamping cylinder 53 when the workpiece W is clamped by the conveying vise device 15. Also good.

  The control device 100 outputs a command to the servo motor M15 so as to retract the transport vice device 15 using the length X calculated in S510 as the retraction amount (S520). If the controller 100 determines that the backward movement has been completed based on the encoder signal from the servo motor M15 (S520: YES), the controller 100 outputs a command to stop the servo motor M15 (S530). Wait for input (S540).

  The operator rotates the primary workpiece taken earlier by 90 degrees, abuts the rear end surface against the front end surface of the material clamped by the conveying vice device 15, and then operates the operation panel 80 to start secondary processing. Is commanded.

  When the secondary machining start is instructed in this way (S540: YES), the control device 100 executes the secondary machining product cutout control (S550) similar to S340 to S460 in the first embodiment, and enters a command waiting state ( S560).

  When the secondary processing restart is instructed (S560: secondary processing restart), the control device 100 causes the transport vice 15 to advance the transport vice device 15 with the secondary workpiece cutting dimension L2 as an advance amount. A command is output to M15 (S570). When it is determined that the forward movement is completed based on the encoder signal from the servo motor M15 (S580: YES), the control device 100 returns to S550, waits for a secondary processing start command, and cuts out the secondary processed product. On the other hand, when the end of secondary machining is commanded (S560: completion of secondary machining), the process returns to S250 of the primary machining control routine and enters a standby state as in the first embodiment.

  By using the cutting apparatus according to the second embodiment having the above control processing capability, the cutting operation is performed so that the front end side of the primary workpiece W1 is the secondary workpiece W2. Without increasing the thickness, a blank having a width smaller than the entire width can be accurately and efficiently manufactured from a thick steel plate.

  Although several embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment, an explanation has been given so that, when one primary processed product W1 is cut out, the process proceeds to secondary processing. However, the primary processed product W1 is cut out from the workpiece W one after another and stocked, and the primary processed product W1 is stored. The apparatus may be used in such a manner that secondary processing is performed after it cannot be cut out.

  Further, as shown in FIGS. 6 (A) and 6 (B), after the primary processing and secondary processing are performed in the same manner as in Examples 1 and 2, the secondary processed product W2 is obtained. Small tertiary products can also be cut out. In this case, as shown in FIG. 6C, when the tertiary processing is started, the conveying vice device 15 is advanced to the position at the time when the primary processing is completed (S710, S720), and the subsequent tertiary processing is performed. The control can be configured similarly to the secondary machining control routine of the first and second embodiments. In addition, you may perform the return operation | movement to the position at the time of completion | finish of the primary process at the time of the completion | finish of a secondary process at the time of a tertiary process start.

  Further, as a configuration in which the tertiary processing is added to the first embodiment, as shown in FIG. 7, the advance amount Y = (secondary processing cutting dimension is maintained with the return position after the retraction operation of the transport vice 15 at the end of the secondary processing being performed. L2) − (tertiary machining cutting dimension L3) is calculated (and the conveying vice device 15 is advanced by this advance amount Y, then the same control as the secondary machining control routine of the first embodiment is executed to perform the tertiary machining. It can also be set as the structure to implement.

  The blank can be obtained by applying to a circular saw cutting machine for cutting a plate material into a fixed size, cutting a wide and thick plate steel plate to a certain length, and further cutting the cut piece.

DESCRIPTION OF SYMBOLS 11 ... Circular saw motor 13 ... Main vice apparatus 15 ... Conveyance vice apparatus 30 ... Rear vice 31 ... Fixed jaw 32 ... Moving jaw 33 ... Hydraulic cylinder 34 ... Hydraulic pressure Cylinder 40: Front vise 41: Fixed jaw 42 ... Moving jaw 43 ... Hydraulic cylinder 44 ... Hydraulic cylinder 51 ... Fixed jaw 52 ... Moving jaw 53 ... Hydraulic cylinder 80 ... Operation panel 82 ... Input keyboard 100 ... Control device 110 ... Control circuit 120 ... Storage device M11 ... Servo motor M15 ... Servo motor W ... Workpiece W1 ... Primary processed product W2 ... Secondary processed product W3 ... Remainder

Claims (5)

Using a circular saw cutting machine equipped with a main vice device for clamping a workpiece in the vicinity of a cutting position by a circular saw blade and a conveying vise device for performing a back and forth movement for positioning the workpiece, A cutting method for cutting a blank having a width shorter than the entire length and smaller than the entire width, wherein the following steps are performed in order, and the method for cutting a wide thick plate by a circular saw cutting machine.
(A) A primary work product cutting step in which a workpiece is clamped by the conveying vice device, moved forward toward the cutting line, positioned, clamped by the main vice device, and then cut by the circular saw blade.
(B) A secondary processing preparation step in which the primary processed product cut out after the primary processed product cutout step is taken out, and the transfer vice apparatus is moved backward while the workpiece is clamped.
(C) The one end face in the width direction of the taken out primary processed product is made to abut against the front end face of the uncut portion of the work that has been clamped by the conveying vice apparatus after the secondary processing preparation step. A secondary product cut-out step for setting and clamping the main vice device and cutting with the circular saw blade. A main vise device for clamping and fixing a workpiece in the vicinity of a cutting position by a circular saw blade, a conveying vise device for performing a back and forth movement for positioning the workpiece, and further comprising the following configuration A circular saw cutting machine characterized by.
(1) The main vice device has a front end at a position near the rear of the cutting line so that a workpiece can be clamped at two positions, a front position and a rear position, which are centered on a cutting line by the circular saw blade. And a rear vise installed so that the position immediately in front of the cutting line is a fixed position at the time of cutting, each of the rear vice and the front vise is an independent clamp In addition to being configured to be able to perform an unclamping operation, it is also configured to be independently movable in the front-rear direction, and when the circular saw blade is returned to the standby position after the cutting operation, the cutting piece is It must be configured so that a retracting operation can be performed to widen the gap between the cut surfaces in the clamped state.
(2) The conveying vise device advances and retracts along the front-rear direction orthogonal to the cutting line in a state where the workpiece is clamped, thereby performing retraction during positioning and cutting operation of the circular saw blade. Be configured to run.
(3) As a control system, an operation panel for inputting various machining conditions and commands, a fluid cylinder for clamping and a servomotor for forward and backward movement of the transfer vice device, a fluid cylinder for clamping the rear vise, and a front cylinder A fluid cylinder for clamping and a servo motor for back and forth movement, a circular saw motor to which the circular saw blade is mounted, and a headstock for moving the headstock in which the circular saw motor is installed in a direction along the cutting line. Provide a control device that controls the servo motor and these devices to input and output signals and execute the cutting operation according to the control program.
(4) A control program for executing the following processing procedure is installed in the control device as the control program.
(4-1) Positioning of the workpiece when cutting the primary workpiece by determining the advance amount from the input primary workpiece cutting dimension and outputting a command to advance the conveying vice device based on the advance amount It has processing steps to execute the operation.
(4-2) A retraction amount is determined from the input secondary workpiece cutting dimension, and a command for cutting the secondary workpiece is output by outputting a command to retreat the conveying vice device based on the retraction amount. A processing step for executing the positioning operation is provided.
(4-3) When causing the headstock to perform a return operation to the original position after completion of cutting, in the primary processing, the rear vice of the main vice apparatus is unclamped, and the main vice apparatus A command for executing a retracting operation to increase the gap between the cut surfaces of the workpiece by the forward movement of the front vice and the backward movement of the conveying vice apparatus, and in the secondary processing, the conveying vice apparatus And a command for executing a retracting operation to increase the gap between the cut surfaces of the workpiece by the forward movement of the front vice and the rearward movement of the rear vice of the main vice device. It has processing steps to output. 3. The circular saw cutting machine according to claim 2, wherein the step (4-2) is configured as follows.
(4-2-1) for determining the secondary work product cutting dimension itself as the retraction amount, and outputting a command to retreat the conveying vice device based on the retraction amount to cut the secondary work product. It is configured as a step to execute the workpiece positioning operation. 3. The circular saw cutting machine according to claim 2, wherein the step (4-2) is configured as follows.
(4-2-2) “Whole work width” − “Secondary workpiece cutting dimension” is determined as the retraction amount, and a command for retreating the conveying vice device based on the retraction amount is output to perform secondary processing. It is configured as a step to execute the positioning operation of the workpiece for cutting the product. The circular saw cutter according to claim 4, further comprising the following steps.
(4-4) When a command to execute the secondary machining is input again after the first secondary machining is performed, the secondary workpiece cutting dimension is determined as the advance amount, and based on the advance amount A step of outputting a command to advance the conveying vice device and executing a workpiece positioning operation for cutting the second and subsequent secondary workpieces.