JP4094191B2 - Punch press control method and control apparatus therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punch press control method and a control apparatus therefor.
[0002]
[Prior art]
The punch press includes a controller, a die drive mechanism for mounting and moving the punch die and die die up and down, an XY table for supporting the workpiece and moving it in a horizontal plane, and a punch die and die die. A plurality of mold sets (hereinafter simply referred to as molds) formed of combinations are provided. The mold may include a stripper for pressing the workpiece from the upper surface during processing.
The controller selects a mold based on a preset machining program, attaches to the mold drive mechanism, and molds the workpiece (plate material) carried between the punch mold and the die mold. Punching or forming is performed by moving the drive mechanism up and down. After machining, the punch die is raised to a predetermined punch standby position so as not to interfere with the workpiece, and the die die is lowered to a predetermined lower die standby position so as not to interfere with the workpiece. Is moved to a new machining position.
[0003]
At this time, several punch standby positions are set in advance in the controller, and one of these punch standby positions is selected according to the workpiece forming height in the machining program, and the punch die is punched. There is known a technique for raising the standby position to avoid interference.
[0004]
In a punch press, a technique for setting a standby position of a punch die based on a forming height of a processed workpiece so that the punch die does not interfere with the workpiece has been conventionally known. For example, Japanese Patent Laid-Open No. 11-123472. It is shown in the gazette.
FIG. 9 shows a flowchart for setting the punch standby height (standby position) described in the publication, and the prior art will be described below with reference to FIG.
First, the controller calculates a molding height that is a reference for calculating the punch standby height according to a predetermined calculation formula (S91). This molding height is based on the lower end surface of the workpiece. For example, the height of the part that is molded from the upper surface of the workpiece (actual molding height), the plate thickness of the workpiece, and the part from the molding process upward A value obtained by adding a separation height, which is a safe value for releasing the punch die.
[0005]
Then, it is determined whether or not processing by a molding die has been performed at the time of the current processing (S92). If the die is not a molding die, the process proceeds to S93, and the molding height obtained in S91 or slightly higher than this. A large value is set as a punch standby height. In addition, when processing with a molding die is performed in S92, the current molding height calculated in S91 in S95 is greater than the maximum molding height up to the previous time (this is called the maximum molding height). It is determined whether or not it is small. The maximum molding height is stored in a storage device (not shown) inside the controller.
If the current molding height is smaller, in S93, the maximum molding height so far or a value slightly larger than this is set as the punch standby height. If the current molding height is larger, the maximum molding height is updated to the current molding height in S96, and then the updated maximum molding height or a value slightly larger than this is punched in S93. The waiting height is assumed.
[0006]
Next, in S94, the punch standby height determined in S93 is compared with a predetermined value (allowable value). If the punch standby height does not exceed the predetermined value, this processing flow is terminated and the above determination is made. The standby position control of the punch die is performed based on the punch standby height. If the punch standby height exceeds a predetermined value in S94, a PMC (programmable machine controller) (not shown) is notified in S97, and the PMC changes the die die height by a predetermined processing means (not shown). A predetermined process such as performing is performed.
In this way, the punch standby height is determined, and in subsequent processing, after the lower end surface of the punch die is raised to the punch standby height after processing, the workpiece is moved, and interference between the punch die and the workpiece occurs. Is avoiding.
[0007]
[Problems to be solved by the invention]
However, the prior art disclosed in the Japanese Patent Laid-Open No. 11-123472 has the following problems.
That is, according to the prior art, the maximum value of the molding height so far is stored as the maximum molding height, and the subsequent punch standby height (hereinafter referred to as the standby position) is the maximum molding height or this. It is set at a slightly higher position. Therefore, when machining a flat part without a forming part of the workpiece, the punch die must be raised to the punch standby position based on the maximum forming height every time punching is performed. Moreover, the punch standby position gradually increases each time the processing progresses and a molding process with a higher molding height is performed, so that there is a problem that the wasteful operation time of the punch die during the standby operation increases. .
[0008]
Such a problem becomes particularly noticeable in the case of continuous punching that continuously punches adjacent processing points.
An example of continuous punching is shown in FIG. That is, in the figure, a workpiece 26 is continuously punched along a predetermined path from a starting point 48 by a square punch die and a die die, and a large square opening 44 is provided. In the figure, for the sake of explanation, the end of the previously opened hole and the end of the next opened hole are shown to be exactly adjacent to each other. Processing is performed while overlapping the parts slightly. In addition to the above, continuous punching is also used for processing straight or arcuate long holes using circular punch dies and die dies. Then, it is performed at a place where there is no unevenness due to molding.
[0009]
FIG. 11 shows a locus of movement of the punch die when continuous punching is performed after forming. In the drawing, the punch die is shown as if it moves from left to right in the figure, but in reality, the workpiece 26 moves from right to left.
As shown in the figure, in the continuous punching process, (1) after the punch die is lowered and the i-th punching process is finished, the setting is set to (2) despite the fact that the periphery is flat. Rises to the punch standby position W. Then, after (3) the workpiece 26 is moved, (4) the punch die is lowered from the punch standby position W and the (i + 1) th punching process is performed. Next, (5) the sequence in which the punch die is raised to the punch standby position W is repeated. That is, in the prior art, even when the flat portion of the workpiece 26 is continuously punched in this way, the punch die is raised to the punch standby position W based on the maximum forming height by the processing so far after the processing. Then, the workpiece 26 is moved. Therefore, since it takes a longer time than necessary to raise and lower the punch die during continuous punching, there is a problem that the processing time is prolonged and the productivity is low.
[0010]
The present invention has been made paying attention to the above-mentioned problems, and controls the punch press that can shorten the waiting time of the mold during continuous punching without interfering the mold with the molding part of the workpiece. It is an object to provide a method and a control device thereof.
[0011]
[Means, actions and effects for solving the problems]
In order to achieve the above object, the first invention processes a workpiece between a punch die and a die die that move up and down opposite to each other, and sets a standby position of the punch die when moving the workpiece after processing. In the punch press control method, the machining program is updated to the normal standby position that is set so as to avoid interference between the punch die and the workpiece in accordance with the workpiece forming height on the punch die path when the workpiece is moved. The die data of the punch mold used for the continuous punching process or the continuous molding process by using the normal standby position by the continuous punching process command or the continuous molding process command. The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by This is a method of temporarily replacing the standby position for continuous machining set based on the above.
[0012]
Further, the fifth invention provides a punch mold and a die mold provided so as to be movable up and down facing each other, and a workpiece carried between the punch mold and the die mold by controlling the vertical movement of the punch mold and the die mold. The standby position of the punch mold when machining and moving the workpiece after machining is set so that interference between the punch mold and the workpiece can be avoided sequentially according to the workpiece molding height on the punch mold path when moving the workpiece. In a punch press control device having a controller for updating to a normal standby position, the controller sets the normal standby position in accordance with a continuous punching processing command or a continuous molding processing command in the processing program. Die data for punch dies used for punching or continuous forming The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is configured to temporarily replace the standby position for continuous machining set based on the above.
[0013]
According to the first and fifth inventions, in normal processing, the past maximum is taken into account the processed shape (molding height) of the workpiece in the previous processing so as to avoid interference between the punch die and the workpiece. The standby position is sequentially set according to the molding height, and the punch die is set to standby at the set normal standby position. And at the time of continuous punching processing or continuous forming processing, according to the continuous punching processing command or continuous forming processing command in the processing program, the normal standby position is set to the die such as the shape and processing type of the punch mold to be used. data The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is temporarily replaced with a standby position for continuous machining set based on the above, and the punch die is raised to this standby position for continuous machining to perform continuous punching or continuous molding. That is, in the case of at least one of continuous punching and continuous forming, machining is generally performed in a flat range on the workpiece, and when the workpiece is moved, the punch die is moved up to that of the workpiece. It does not pass through the range that was molded. Therefore, continuous punching or continuous forming can be performed by setting an optimal standby position that can avoid interference with the flat workpiece, without taking into account the processed forming height of the workpiece. The punch standby position during processing can be made lower than the normal standby position. As a result, the time required for raising and lowering the punch die during continuous machining can be shortened and interference between the punch die and the workpiece can be prevented, so that the machining time can be shortened and the machining efficiency can be improved.
[0014]
Further, the second invention is to hold the work upper surface with a stripper provided so as to be movable in the same direction as the punch die between the punch die and the die die that move up and down facing each other, and the punch die and die die. The workpiece is processed between molds, and the stripper standby position when moving the workpiece after machining is set so that interference between the stripper and workpiece can be avoided in sequence according to the workpiece forming height on the stripper path during workpiece movement. In the punch press control method for updating to a normal standby position, a stripper that uses the normal standby position for the continuous punching process or continuous forming process according to a continuous punching process command or a continuous forming process command in the processing program. Mold data The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by This is a method of temporarily replacing the standby position for continuous machining set based on the above.
[0015]
Further, the sixth invention is provided between the punch mold and the die mold, which are provided so as to be movable up and down facing each other, and is provided between the punch mold and the die mold so as to be movable in the same direction as the punch mold. The stripper that presses the upper surface of the workpiece and the vertical and vertical movements of the punch and die dies are controlled to process the workpiece that is loaded between them. In a punch press control device comprising a controller for updating to a normal standby position which is set so as to avoid interference between the stripper and the workpiece in accordance with the workpiece forming height on the stripper path, the controller is a machining program Mold data of the stripper used for the continuous punching process or continuous forming process by using the normal standby position according to the continuous punching process command or continuous forming process command. The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is configured to temporarily replace the standby position for continuous machining set based on the above.
[0016]
According to the second and sixth inventions, in the normal processing, the past maximum forming in consideration of the processed shape (forming height) of the workpiece in the previous processing so as to avoid the interference between the stripper and the workpiece. The stripper is made to wait at a normal standby position sequentially set according to the height. When continuous punching or continuous molding is performed, the normal standby position is used as the mold data such as the shape of the stripper used and the processing type. The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is temporarily replaced with a standby position for continuous machining set based on the above, and the continuous punching process or continuous molding process is performed by raising the stripper to the standby position for continuous machining. In other words, the stripper during continuous punching or continuous forming processing is set by setting an optimal standby position so that the stripper in use can avoid interference with a flat workpiece without considering the processed molding height. The standby position can be made lower than the normal standby position. As a result, the time required for raising and lowering the stripper during continuous machining can be shortened and interference between the stripper and the workpiece can be prevented, so that the machining time can be shortened and the machining efficiency can be improved.
[0017]
Further, the third aspect of the invention processes a workpiece between a punch die and a die die that move up and down opposite to each other, and sets the standby position of the die die when moving the workpiece after the processing as the die die when moving the workpiece. In the punch press control method, which is updated to the normal standby position that is set so as to avoid interference between the die mold and the workpiece in accordance with the workpiece forming height on the die path, continuous punching machining commands in the machining program Or the die data of the die mold used for the continuous punching process or the continuous molding process by using the normal standby position by the continuous molding process The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by This is a method of temporarily replacing the standby position for continuous machining set based on the above.
[0018]
According to a seventh aspect of the present invention, there is provided a punch die and a die die provided opposite to each other so as to be movable up and down, and a workpiece carried between the punch die and the die die by controlling the vertical movement of the punch die and the die die. The standby position of the die die when machining and moving the workpiece after machining is set so that interference between the die die and the workpiece can be sequentially avoided according to the workpiece molding height on the die die path when moving the workpiece. In a punch press control device having a controller for updating to a normal standby position, the controller sets the normal standby position in accordance with a continuous punching processing command or a continuous molding processing command in the processing program. Die mold data used for die cutting or continuous molding The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is configured to temporarily replace the standby position for continuous machining set based on the above.
[0019]
According to the third and seventh inventions, in normal processing, in order to avoid interference between the die mold and the workpiece, the processed shape (molding height) of the workpiece in the previous processing is taken into consideration in the past. The die mold is made to wait at a normal standby position that is sequentially set according to the maximum molding height. And at the time of continuous punching processing or continuous forming processing, the normal standby position is used as the die data such as the shape and processing type of the die mold to be used. The second standby position set to Standby position setting command in machining program The larger value of the first standby position set by It is temporarily replaced with a standby position for continuous machining set based on the above, and the die mold is lowered to this standby position for continuous machining to perform continuous punching or continuous molding. In other words, without considering the processed molding height, by setting the optimal standby position that can avoid interference with the flat workpiece, the die mold in use, during continuous punching processing or continuous molding processing The die mold standby position can be made closer to the work than the normal standby position (that is, the distance away from the work can be reduced). As a result, the time required for raising and lowering the die mold during continuous machining can be shortened and interference between the die mold and the workpiece can be prevented, so that the machining time can be shortened and the machining efficiency can be improved.
[0020]
The fourth invention is the first, second or third invention, Concerned Continuous punching Or After the continuous forming process is completed, the continuous process for Return the standby position to the original normal standby position. You It's a way.
[0021]
The eighth invention is the fifth, sixth or seventh invention, wherein the controller is Concerned Continuous punching Or After the continuous forming process is completed, the continuous process for Return the standby position to the original normal standby position. You It is configured.
[0022]
According to the fourth and eighth inventions, Concerned Continuous punching Or After the continuous forming process is completed, the continuous process for The standby position is returned to the normal standby position before continuous machining. Thus, after the continuous punching process or continuous forming process is completed, the normal standby position where the mold (punch mold, stripper and die mold) takes into account the molding height of the workpiece in the previous processing As a result, the interference between the mold and the workpiece can be reliably prevented even after the end of continuous machining. Therefore, machining is not interrupted and machining efficiency can be improved.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. Note that, in each embodiment, the same elements as those used in the description of the prior art are denoted by the same reference numerals, and redundant description is omitted.
[0024]
In FIG. 1, the block diagram of the punch press in this invention is shown. In the figure, the punch press includes a press unit 51, a controller 29, a mold magazine device (hereinafter referred to as a magazine 27), a mold exchanging device (hereinafter referred to as an ATC device) 28, and an XY table 30. .
The press portion 51 is provided so as to be movable up and down, and a punch shaft 52 that pressurizes the work 26 from above to below, and a lower die shaft 53 that is provided so as to be movable up and down and pressurizes the work 26 upward from below. And a stripper shaft 54 that is provided so as to be movable in the same direction as the punch shaft 52 and pressurizes the workpiece 26 downward from the top during punching to hold the workpiece position. The punch shaft 52, the stripper shaft 54, and the lower die shaft 53 are disposed so that the respective shaft centers coincide with each other.
[0025]
A punch shaft piston 1 is inserted into the punch shaft cylinder 6 of the punch shaft 52 so as to be movable up and down. The stripper shaft piston 10 of the stripper shaft 54 is fitted to the outer peripheral portion of the lower portion of the punch shaft piston 1 so as to be movable up and down, and the stripper shaft piston 10 is inserted into the stripper shaft cylinder 15 so as to be movable up and down.
A punch die 31 is detachably attached to the lower end portion of the punch shaft piston 1, and a stripper 32 is detachably attached to the lower end portion of the stripper shaft piston 10. The tip end portion of the punch die 31 is a stripper 32 when lowered. It can protrude from the through-hole provided in the lower end of.
[0026]
A solenoid-type punch shaft servo valve 4 is connected to the punch shaft pressurizing chamber 8 and the punch shaft pull-up chamber 9 of the punch shaft cylinder 6. The punch shaft servo valve 4 controls the flow direction and speed of the punch shaft piston 1 by controlling the flow rate of the pressure oil discharged from a hydraulic pump (not shown) to the punch shaft pressurizing chamber 8 and the punch shaft pulling chamber 9. is doing.
A punch shaft position detector 5 for detecting the position of the punch shaft piston 1 is attached between the punch shaft cylinder 6 and the punch shaft piston 1.
[0027]
Similarly, a solenoid type stripper shaft servo valve 13 is connected to the stripper shaft pressurizing chamber 17 and the stripper shaft pulling upper chamber 18 of the stripper shaft cylinder 15. The stripper shaft servo valve 13 controls the flow direction and speed of the stripper shaft piston 10 by controlling the flow rate of the pressure oil discharged from a hydraulic pump (not shown) to the stripper shaft pressurizing chamber 17 and the stripper shaft pulling chamber 18. is doing.
A stripper shaft position detector 14 that detects the position of the stripper shaft piston 10 is attached between the stripper shaft cylinder 15 and the stripper shaft piston 10.
[0028]
A lower die shaft piston 19 is inserted into the lower die shaft cylinder 22 of the lower die shaft 53 so as to be movable up and down. A die mold 33 is detachably attached to the upper end portion of the lower die shaft piston 19. It has been. Lower die shaft cylinder 22 Lower die shaft cylinder pressurizing chamber and lower die shaft cylinder pulling under A solenoid type lower die axis servo valve 20 is connected to the chamber. The lower die axis servo valve 20 controls the flow of the pressure oil discharged from a hydraulic pump (not shown) to the lower die axis pressurizing chamber 24 and the lower die axis pulling lower chamber 25 to move the lower die axis piston 19. Control direction and speed. A lower die axis position detector 21 for detecting the position of the lower die axis piston 19 is attached between the lower die axis cylinder 22 and the lower die axis piston 19.
[0029]
At the height between the punch die 31 and the stripper 32 and the die die 33, a pass line P representing the conveyance reference height position of the workpiece 26 is set. On the pass line P, a support member 30A such as a brush or a roller that supports the workpiece 26 and facilitates conveyance is disposed. The workpiece 26 is gripped by a clamp (not shown) and can be moved on the support member 30 </ b> A along the pass line P by the XY table 30.
[0030]
The controller 29 includes a computer device such as a microcomputer and a central processing unit (hereinafter referred to as CPU) such as a numerical processing device. The CPU inputs detection signals from the detectors 5, 14, and 21 via respective input I / F circuits (not shown), and the punch shaft 52 is based on predetermined arithmetic processing as will be described in detail later. The axis speed commands of the stripper shaft 54 and the lower die axis 53 are obtained, and the obtained speed commands are respectively corresponded to the press axes 52, 54 and 53, the punch axis servo amplifier 45, the stripper axis servo amplifier 47 and the lower die axis servo. The signal is output to the amplifier 46 via an output I / F circuit (not shown). At the time of mold replacement, control commands are output to the ATC device 28 and the magazine 27, respectively, and the mold replacement is controlled according to a preset processing sequence.
[0031]
Servo amplifiers 45, 47, 46 for each press axis convert each axis speed command from the controller 29 into a current command, and solenoids for the punch axis servo valve 4, stripper axis servo valve 13, and lower die axis servo valve 20. Output to the input section. Each servo valve 4, 13, 20 controls the flow rate to each cylinder 6, 15, 22 so that the flow rate is in accordance with the magnitude of the current command value.
[0032]
An ATC device 28 and a magazine 27 are disposed in the vicinity of the press unit 51. In the magazine 27, a plurality of sets of punch dies 31, strippers 32, and die dies 33 are accommodated as a single die. The magazine 27 controls the loading and unloading of each mold based on a control command from the controller 29. The ATC device 28 takes out a die used for processing from the magazine 27 in accordance with a die exchange command from the controller 29 and replaces it with a die attached to the press unit 51.
[0033]
FIG. 2 is a control block diagram of the punch press control apparatus according to the present invention.
The controller 29 includes a machining program 34, a die management information storage unit 35, an operation pattern storage unit 41, a machining command unit 36, a used mold information setting unit 37, a machining plate thickness information storage unit 38, and a standby position information storage unit 39. A punch command unit 40, an operation pattern setting unit 42, a continuous punching processing detection unit 49, a stroke control unit 43, an XY table command unit 55, and an XY axis control unit 56.
The machining program 34 is a machining program preset for each workpiece W, and various control commands and control data for punching are described in a predetermined machining program language. The machining program language is described in, for example, an NC command code and a control program language such as a PLC language. In the description of the present embodiment, an example using the NC command code is shown.
Now, it is assumed that the machining program is described by an NC program as shown in FIG. In the drawing, (T) code represents a plate thickness setting command of the workpiece W to be machined, and (P) code represents a standby position setting command for setting the respective standby positions of the punch shaft 52, the stripper shaft 54, and the lower die shaft 53. , T code represents the die selection command to be used, G00 code represents the machining command after completion of XY axis movement of the XY table, and X code and Y code represent movement to the movement target position of the XY axis of the XY table Indicates a directive. Further, the G72G90 code represents a command to move to the start position of the continuous punching process using the G66 code, and the G66 code represents a linear continuous punching process command here. Each data of the G66 code is, for example, a continuous process. The length (I), the inclination angle (J) in the linear continuous machining direction, the shape dimensions (P, Q) of the mold used, and the like are shown. Note that the continuous punching process is not limited to a linear process, and a rectangular (for example, G67 code), square, or arcuate process (such as arc nibbling or radius machining) is also possible.
The machining program 34 can be described in various program languages such as the NC language and the PLC language. In the following description, an example described in the NC language will be described.
[0034]
In the mold management information storage unit 35, data of a mold to be used as shown in FIG. 4 is registered in advance. That is, a die number is defined for a die composed of a punch die 31, a stripper 32, and a die die 33 used in the set, and die data such as each shape and diameter is stored. And the number of the operation pattern of each press axis when using the die is stored.
New registration and deletion of molds can be performed from outside the controller 29 by setting means (not shown) such as setting operation switches and data communication.
[0035]
As shown in FIG. 5, an operation pattern corresponding to a mold to be used is stored in the operation pattern storage unit 41 in advance. That is, for each operation pattern number indicating the pattern content, the processing type, the moving speed of each press axis, the standby position, etc. are stored as a data group. These data can be set via setting means (not shown). Since the type and number of data required for control vary depending on the processing type, the type and order of data are stored in advance as data management information, and data is stored and read based on this data management information. Is called.
The stripper shaft standby position in FIG. 5 at this time, that is, data 2 is referred to as a second standby position W2. The second standby position W2 indicates the standby position of the stripper shaft 54 corresponding to the operation pattern when using the mold.
[0036]
Next, a procedure for performing processing by such a controller 29 will be described.
In the following description, for the sake of simplicity, it is assumed that the stripper 32 is controlled to be at a position lower than the punch die 31 in the standby position, so that the stripper 32 is controlled so as not to interfere with the workpiece 26. explain.
[0037]
First, the pre-processing procedure will be described. The machining command unit 36 creates the following data based on the machining program 34 before starting machining.
First, a die designation command (T code in NC language) stored in the machining program 34 is searched. Then, the mold information corresponding to the mold number entered in the command is extracted from the mold management information storage unit 35 in the order of use, and the used mold order data as shown in FIG. 6 is created and used. Store in the mold information setting unit 37.
At this time, the molding height data entered in the radius (height) column of the molding die in FIG. 6 is referred to as a third standby position W3. The third standby position W3 indicates the molding height of the mold used.
[0038]
Second, the data of the plate thickness t set by the plate thickness setting command described in the processing program 34 is transferred to the processing plate thickness information storage unit 38 and stored therein. This is because the standby position data of the punch die 31 and the stripper 32 is set as the height from the upper surface of each workpiece 26 in order to be able to cope with the change of the plate thickness of the workpiece 26 to be processed. This is because the pass line P that is the coordinate origin of the target position of the vertical movement of the mold 31 and the stripper 32 is set on the lower end surface of the workpiece 26. That is, by adding the standby position data and the plate thickness t, the standby position target of each press axis is obtained as a position from the pass line P, and the obtained standby position target and the position detector 5 of each press axis are obtained. , 14 and 21 are controlled so as to reduce the deviation from the position data.
[0039]
Third, the standby position data set by the standby position setting command described in the machining program 34 is transferred to the standby position information storage unit 39 and stored therein. This standby position data is a stripper standby position where the stripper 32 waits, and this is referred to as a first standby position W1.
[0040]
Next, when machining is started, the operation pattern setting unit 42 performs the following process for each used mold selection command. That is, the mold data is sequentially read from the used mold order data of the used mold information setting unit 37 shown in FIG. Then, the operation pattern data corresponding to the operation pattern number of the read mold data is read from the operation pattern storage unit 41 and stored. Further, the operation pattern setting unit 42 reads the plate thickness t and the first standby position W1 from the processed plate thickness information storage unit 38 and the standby position information storage unit 39, respectively. Then, the operation pattern setting unit 42 performs an actual machining operation pattern for actual machining based on the stripper standby position W calculated by a predetermined procedure described later and the operation pattern data read from the operation pattern storage unit 41. Data is created, and data of the created actual machining operation pattern is transmitted to the stroke control unit 43.
The stroke control unit 43 controls each press axis based on the actual machining operation pattern data. That is, each press shaft is based on the target speed (lowering speed, molding speed, ascent speed, etc.) and target position (molding position, standby position, etc.) set by the actual machining operation pattern and the position data from the position detector. Are calculated and output to the servo amplifiers 45, 47, and 46 of the respective press axes. Thus, every time punching or molding is performed according to the actual machining operation pattern corresponding to each die, the punch die 31 and the stripper 32 are raised to the stripper standby position W and stand by. Avoid interference.
[0041]
When the machining command (G00 code, G66 code, G67 code, etc.) described in the machining program 34 is read, the XY table command unit 55 sets the XY table 30 at the position of the position data set by this machining command. A position control command to be moved is output to the XY axis control unit 56. Next, when this positioning control is completed, a machining command is output to the punch command unit 40, and then a machining completion signal from the punch command unit 40 is awaited. When the machining completion signal is received, the next positioning control is performed, and thereafter the same processing is repeated.
The XY axis control unit 56 controls the position of each drive motor (not shown) of the XY table 30 based on the position control command from the XY table command unit 55.
[0042]
When the machining command from the XY table command unit 55 is input, the punch command unit 40 sends a punch machining command to the stroke control unit so as to drive each press axis based on the actual machining operation pattern set by the operation pattern setting unit 42. Output to 43. When punching is completed at each position, a machining completion signal is output to the XY table command unit 55.
When the stroke control unit 43 receives a punch machining command from the punch command unit 40, the stroke control unit 43 applies the punch axis servo valve 4, the strip axis servo valve 13, and the lower die axis servo valve 20 based on the set actual machining operation pattern data. Each outputs a speed command to control the machining operation.
[0043]
7 and 8 are flowcharts for setting the stripper standby position in the punch press configured as described above.
In FIG. 7, the operation pattern setting unit 42 determines whether the current process is a punching process or a forming process based on the information from the used mold information setting unit 37 (S1). In the case of molding processing, the process proceeds to S4, and in the case of punching processing, the operation pattern corresponding to the first standby position W1 stored in the standby position information storage unit 39 and the mold number used at this time. The second standby position W2 in the data is read out (S2). Then, the first standby position W1 and the second standby position W2 are compared, the larger one is stored as the maximum standby position W4, and the process proceeds to S6.
[0044]
In S4, the first standby position W1 stored in the standby position information storage unit 39, the second standby position W2 in the operation pattern data corresponding to the used mold number at this time, and the used mold information The third standby position W3 (molding height) corresponding to the used mold number at this time in the used mold order data stored in the setting unit 37 is read out. In S5, the first to third standby positions W1 to W3 are compared, the maximum value is stored as the maximum standby position W4, and the process proceeds to S6.
[0045]
Next, in S6, the determined maximum standby position W4 and a predetermined safety value ΔW for preventing workpiece interference are added to determine and store the maximum molding height WM.
[0046]
Next, the operation pattern setting unit 42 determines whether punching or forming (that is, pre-processing) has been performed in the processing program before this (S7). If it is carried out, the pre-processed maximum forming height WM0 already stored at the time of pre-processing is compared with the maximum forming height WM stored in S1 to S6, and the larger value is set as the new maximum forming height. Is set and stored as WM (S8). This new maximum molding height WM is a standby position in normal processing.
[0047]
Next, based on the plate thickness t stored in the processed plate thickness information storage unit 38, the maximum forming height WM is corrected to a value with the pass line P as the coordinate origin, and this correction value is punched by the current mold. An actual machining operation pattern is set as the machining stripper standby position W (S9). Then, the data of the actual machining operation pattern in which the stripper standby position W is set is stored in the data storage unit 42a (S10).
[0048]
Then, for example, based on the description of the machining program 34 to be described later, it is determined whether or not the control for shortening the machining time at the time of continuous punching according to the present invention (this is called shortening control) is effective (S11). . If the shortening control is valid, the shortening control is performed in S14 and then the process proceeds to S15. If invalid, the data in the data storage unit 42a is transmitted to the stroke control unit 43. Thus, normal punching is performed, and the stroke control unit 43 controls the stripper 32 to move to the stripper standby position W before the workpiece 26 moves. In this case, the standby position of the punch die 31 is always set to be the same as the stripper standby position W or higher by a predetermined distance in order to avoid interference between the punch die 31 and the workpiece 26. It shall be. Thereafter, the process proceeds to S15.
[0049]
In S15, the presence / absence of the next processing is determined. If there is no next processing, the present processing flow ends. If the next machining still remains in S15, the current maximum molding height WM is stored as the previous maximum molding height WM0 (S16), and the above process is repeated after returning to S1.
[0050]
As described above, the processing when the shortening control is invalid in S11 is almost the same as the conventional technology, and is always set to the maximum forming height WM (normal standby position) in all processing including continuous punching. The punch mold 31 and the stripper 32 are controlled to be raised to the corresponding stripper standby position W.
[0051]
Next, the shortening control in S14 will be described with reference to FIG.
In the figure, the continuous punching process detection unit 49 first determines whether or not the command of the machining program 34 is a continuous punching process command (S31). Since this command is performed by the G66-68 code or the like in the NC language, if these codes are described, it is determined that the continuous punching process is started, and this is notified to the operation pattern setting unit 42, and then to S32 Transition. If it is not a continuous punching command, the process proceeds to S40.
[0052]
In S32, the operation pattern setting unit 42, the first standby position W1 stored in the standby position information storage unit 39, and the second standby position W2 in the data of the operation pattern corresponding to the mold number used at this time And the larger value is stored as the maximum standby position W4 (S32), and a safety value ΔW is added to the maximum standby position W4 to obtain a shortened maximum standby position Wtmp (standby position for continuous machining) ( S33). Then, the shortened maximum standby position Wtmp is corrected to the stripper standby position W with the pass line P as the coordinate origin based on the plate thickness t stored in the processed plate thickness information storage unit 38, and the corrected stripper standby position is corrected. An actual machining operation pattern is set based on the operation pattern data corresponding to W and the mold number used at this time (S34).
[0053]
The operation pattern setting unit 42 stores the data of the actual machining operation pattern in the continuous machining data storage unit 42b (S35). Next, the actual machining operation pattern data in the continuous machining data storage unit 42b is transferred to the stroke control unit 43 (S36), and continuous punching is performed based on the actual machining operation pattern (S37). Thereby, the stroke control part 43 raises the lower end surface of the punch die 31 and the stripper 32 to the stripper standby position W based on the shortened maximum standby position Wtmp after each punching during continuous punching. become. That is, the normal standby position is temporarily canceled, and the continuous machining standby position is waited for.
[0054]
Next, the operation pattern setting unit 42 determines whether or not the continuous punching process has been completed (S38). If not, the process returns to S37 and continues the continuous punching process. When the processing is completed, the data stored in the data storage unit 42a stored in S10 is transmitted to the stroke control unit 43, and the stroke control unit 43 starts continuous punching based on the stripper standby position W in the transferred data. The lower end surfaces of the punch die 31 and the stripper 32 are raised to the immediately preceding standby position (S39). Thereafter, the process proceeds to S42 to determine the presence or absence of the next machining command.
[0055]
On the other hand, in S <b> 40, the operation pattern setting unit 42 transfers the data in the data storage unit 42 a stored in S <b> 10 to the stroke control unit 43. Then, punching is performed based on the normal actual machining operation pattern (normal standby position) (S41), and the presence / absence of the next machining command is determined (S42). At this time, if there is a machining command, it is determined whether or not this is a continuous punching command (S43), and if it is not a continuous punching command, the process returns to the original flow and proceeds to S15 (see FIG. 7). To do. If it is a continuous punching process command in S43, the process returns to S36 and the following processing is repeated.
If there is no next machining command in S42, the shortening control is terminated and the process returns to the original S15 (see FIG. 7).
In S32 of the above flowchart, the maximum standby position W4 may always be set to the second standby position W2.
[0056]
Next, the flow of machining will be described in more detail according to an actual machining program example. An example of the NC program will be described with reference to FIG.
At the beginning of the program, the thickness t of the workpiece 26 to be machined, the first standby position W1 for setting the interval between the workpiece 26 before machining and the lower end surface of the stripper 32 (that is, the standby position), and during continuous punching A shortening control setting command for setting whether or not to enable the shortening control is described.
[0057]
In this example program, the thickness t of the workpiece 26 is set to 1.2 mm by the description (T 1.2), and the first standby position W1 is set to 3. by the description (P 3.5). It is set to 5mm.
Further, the shortening control setting command is described as, for example, (B1) when the shortening control is validated, as shown in the figure, and is described as (B2) when it is invalidated. For example, when (B3) is described, the validity / invalidity may be determined according to the state of a changeover switch or the like provided on an operation panel (not shown) of the controller 29. Enable / disable can be easily set at the discretion of the operator. Such shortening control valid / invalid setting is provided in order to cope with a confirmation work at the time of trial machining, a case where the warp of the workpiece 26 is large at the time of machining, and the like.
The safety value ΔW is not described in the program, but is assumed to be set to 1.0 mm in advance.
[0058]
The machining command unit 36 creates each data before starting machining according to the above-described pre-machining procedure, and then starts machining according to the machining program.
First, when T100 is read, the machining command unit 36 outputs a die replacement command to the ATC device 28, and the punching die corresponding to the die number T100 is mounted on the press unit 51.
Then, the operation pattern setting unit 42 reads the mold data of the use order 1, that is, the mold number of T100 from the use mold order data (see FIG. 6) stored in the use mold information setting unit 37. Since the operation pattern number of this mold is 1, a data group corresponding to the operation pattern number 1 is read with reference to the operation pattern stored in the operation pattern storage unit 41 as shown in FIG. In FIG. 5, the second standby position W2 (1.0 mm in this example) is set as the stripper shaft standby position.
[0059]
Next, the operation pattern setting unit 42 has a plate thickness t (1.2 mm in this example) stored in the processed plate thickness information storage unit 38 and a first standby position W1 (main book) stored in the standby position information storage unit 39. In the example, 3.5 mm) is read (S2 in FIG. 7).
Then, the first standby position W1 and the second standby position W2 are compared, and the larger 3.5 mm is set as the maximum standby position W4 (S3), and a safety value ΔW (= 1.0 mm) is added to the maximum standby position W4. Is set to the maximum molding height WM (S6). The stripper standby position W obtained by correcting this value with the plate thickness t is 5.7 mm (S9).
[0060]
The operation pattern setting unit 42 sets an actual machining operation pattern based on each of the data and transfers it to the stroke control unit 43 (S9, S10, S12, S40). The stroke control unit 43 positions the punch die 31, stripper 32, and die die 33 at predetermined positions. In this example, the punch die 31 and the stripper 32 are positioned at the upper limit position, and the die die 33 is positioned at the lower limit position.
When the positioning of the XY table 30 is finished at the machining position of the X coordinate 1000 and the Y coordinate 200 based on the G00 code, the stroke control unit 43 performs the punch command based on the actual machining operation pattern transmitted from the operation pattern setting unit 42. The workpiece 26 is punched in accordance with a machining command from the section 40 (S13, S41). When the machining is completed, the stripper 32 is raised to the stripper standby position W, and then the process proceeds to execution of the next command of the machining program.
[0061]
Next, when T280 is read (S15, S42), the final maximum molding height WM (here, 4.5 mm) is stored as the previous maximum molding height WM0. In the same manner as described above, the ATC device 28 mounts the upper cut and raised die corresponding to the die number T280 on the press unit 51.
The operation pattern setting unit 42 reads the mold data of the use order 2, that is, the mold number of T280, from the use mold order data (see FIG. 6) stored in the use mold information setting unit 37. In this mold data, the third standby position W3 (15.00 mm in this example) is set as the molding height (or radius).
Since the operation pattern number of this mold is 20, a data group corresponding to the operation pattern number 20 is read with reference to the operation pattern storage unit 41. In FIG. 5, the second standby position W2 (16.00 mm in this example) is set as the stripper shaft standby position.
[0062]
Next, since this is a forming process (S1 in FIG. 7), the operation pattern setting unit 42 processes the plate thickness t (= 1.2 mm) and the first standby position W1 (= 3.5 mm) as described above. The information is read from the plate thickness information storage unit 38 and the standby position information storage unit 39, respectively. Further, the second standby position W2 is read from the operation pattern data, and the third standby position W3 is read from the mold data (S4). Then, the first standby position W1, the second standby position W2, and the third standby position W3 are compared, and the maximum value is set as the maximum standby position W4 (S5). In this case, the maximum standby position W4 is 16.00 mm. The safety value ΔW (= 1.0 mm) is added to the maximum standby position W4, and the maximum molding height WM becomes 17.00 mm (S6).
[0063]
And since the processing is performed before the processing with the T280 mold (S7), the previous maximum molding height WM0 and the maximum molding height WM obtained so far are compared, and the larger one is renewed. The maximum molding height WM is set (S8). At this time, since the previous maximum molding height WM0 was 4.5 mm based on the processing with the mold T100 of the previous use order 1, the new maximum molding height WM is set to 17.00 mm. When the maximum forming height WM is corrected by the plate thickness t (S9), the stripper standby position W is 18.2 mm.
[0064]
The operation pattern setting unit 42 sets an actual machining operation pattern based on the above data (S9), and transfers it to the stroke control unit 43 (S10, S12, S40). The stroke control unit 43 positions the punch die 31, the stripper 32, and the die die 33 at predetermined positions as described above.
When the positioning of the XY table 30 is finished at the machining positions of the X coordinate 150 and the Y coordinate 1200 based on the G00 code, the stroke control unit 43 performs a punch command based on the actual machining operation pattern transmitted from the operation pattern setting unit 42. In accordance with the processing command from the section 40, the workpiece 26 is cut up and formed (S13, S41). When this processing is completed, the stripper 32 is raised to the stripper standby position W (= 18.2 mm), and then the next command is executed.
[0065]
Next, when T175 is read (S15, S42), the previous maximum molding height WM0 is updated to the final maximum molding height WM (= 17.00 mm). Next, in the same manner as described above, the ATC device 28 attaches a long-angle die corresponding to the die number T175 to the press unit 51.
The operation pattern setting unit 42 reads the mold data of the use order 3, that is, the mold number T175 from the use mold order data. Since the operation pattern number at this time is 1, refer to the operation pattern storage unit 41. Then, the data group corresponding to the operation pattern number 1 is read. At this time, in the mold data, the third standby position W3 (in this example, there is no data, 0 mm is set) is set as the molding height (or radius). In the operation pattern storage unit 41 shown in FIG. 5, the second standby position W2 (1.0 mm in this example) is set as the stripper shaft standby position.
[0066]
Next, the operation pattern setting unit 42 reads the plate thickness t (= 1.2 mm) and the first standby position W1 (= 3.5 mm) in the same manner as described above, and further determines the second standby position W2 from the operation pattern data. Read (S2). Then, the first standby position W1 and the second standby position W2 are compared, and the maximum value is set as the maximum standby position W4 (S3). In this case, the maximum standby position W4 is 3.5 mm. The safety value ΔW (= 1.0 mm) is added to the maximum standby position W4, and the maximum molding height WM becomes 4.5 mm (S6). Since the previous maximum molding height WM0 = 17.0 mm is compared with the maximum molding height WM, the larger one (= 17.0 mm) is newly set as the maximum standby position W4 (S8). When this is corrected by the plate thickness t (S9), the stripper standby position W is 18.2 mm.
[0067]
The operation pattern setting unit 42 sets an actual machining operation pattern based on the above data (S9). The created actual machining operation pattern data is temporarily stored in the data storage unit 42a (S10).
[0068]
Next, based on the G72G90 code, the XY table 30 is positioned at the X coordinate 50 and the Y coordinate 50 which are the start positions of the continuous punching process (G66).
[0069]
Next, since the shortening control is enabled (B1 command) as described above (S11), it is determined whether or not the command is continuous punching (S31). Here, since the G66 code indicates the continuous punching process, the continuous punching process detection unit 49 that has read the G66 code determines that the continuous punching process is started, and controls the operation pattern setting unit 42 to perform the shortening control. Is commanded. That is, the first standby position W1 (= 3.5 mm) is compared with the second standby position W2 (= 1.0 mm), and the larger data is set as the maximum standby position W4 (3.5 mm in this example) ( S32). A safety value ΔW is added to the maximum standby position W4 to set a shortened maximum standby position Wtmp (4.5 mm in this example) (S33). The shortened maximum standby position Wtmp is corrected by the plate thickness t, and the stripper standby position W becomes 5.7 mm (S34).
[0070]
The operation pattern setting unit 42 sets an actual machining operation pattern based on the stripper standby position W (S34) and transfers it to the stroke control unit 43 (S35, S36). Based on the actual machining operation pattern, the stroke controller 43 raises the punch die 31 and the stripper 32 from the pass line P to the stripper standby position W (= 5.7 mm) after continuous punching while continuing the continuous punching. The continuous punching is repeated in which the workpiece 26 is moved to the next machining position and moved to the next punching (S37).
And if the continuous punching process detection part 49 detects that the continuous punching process by G66 was complete | finished (S38), the data of the data storage part 42a will be transmitted to the stroke control part 43, and the stroke control part 43 was transferred. The lower end surfaces of the punch die 31 and the stripper 32 are raised to a new stripper standby position W (= 18.2 mm) based on the data (S39).
[0071]
When the next command is read, it is determined that there is next machining (S42), and when the next command is continuous driving (S43), the process returns to S36 and the above-described continuous driving processing is repeated. When it is not continuous driving machining, the process returns to S15 and the above processing is repeated based on the next machining command.
The subsequent processing is the same, and the description thereof is omitted.
[0072]
As described above, according to the present embodiment, the shape and height of the punch die 31 at this time are not considered during the continuous punching process without considering the molding height of the workpiece 26 in the previous molding process. Then, the punch die 31 and the stripper 32 are raised to the stripper standby position W determined based on the processing content, and continuous punching is performed.
In the case of continuous punching, the punch die 31 and the stripper 32 are moved when the workpiece 26 is moved in order to perform processing in a flat area on the workpiece, that is, in a plane having no protruding portion such as a molding portion. 26 does not pass through the range that has been molded in the past. Therefore, unlike the normal punching process, it is not necessary to set the stripper standby position W for avoiding the molded workpiece part, and the stripper standby position W during the continuous punching process can be set low. .
As a result, the time required for raising and lowering the punch die 31 and the stripper 32 during continuous punching can be shortened, and interference between the stripper 32 and the workpiece 26 can be prevented. Therefore, the processing time is shortened and the processing efficiency can be improved. Also, the work does not break off or damage due to the interference between the mold and the work, and the work is not interrupted, so the workability is good.
[0073]
In addition, after the continuous punching process is completed, the stripper standby position W at the time of continuous punching set without considering the maximum forming height of the previous process is returned to the stripper standby position W before the continuous punching process. Yes. As a result, after the continuous punching process is completed, the stripper 32 moves up to the stripper standby position W taking into account the maximum forming height in the process so far, so that the stripper 32 and the workpiece 26 are reliably interfered with each other. Can be prevented. Therefore, the machining is not interrupted by interference, and the machining efficiency can be improved.
[0074]
Further, it is possible to set so that the shortening control is not performed. Thereby, in the confirmation work at the time of trial processing or when the warpage of the workpiece 26 is large at the time of machining, the shortening control is not performed, and the interference between the stripper 32 and the workpiece 26 can be surely avoided. As a result, work interruption can be prevented and work efficiency can be improved.
[0075]
In the above embodiment, the case of performing the continuous punching process has been described, but it goes without saying that the control by the standby position setting according to the present invention can be applied even when the forming process is continuously performed within a flat range of the workpiece. Yes. At this time, based on the mold data of the mold used for continuous molding processing, it is sufficient to set a standby position for continuous processing that can avoid interference between the mold and the work part of molding by the mold. The standby position can be set low similarly to the form, and the same effect can be obtained.
[0076]
Further, the stripper 32 has been described as being used, but the present invention is not limited to this. For example, the present invention can also be applied to a punch press process in which only the punch die 31 and the die die 33 are used. In such a case, the punch axis standby position data in the operation pattern storage unit 41 shown in FIG. 5 can be used as the second standby position W2.
Further, the standby positions of the stripper 32 and the punch die 31 have been described. However, when the die die 33 below the workpiece 26 avoids a molding portion protruding below the workpiece 26, the die mold 33 is moved downward. The same applies to the standby position. However, since the movement position in the vertical direction with respect to the die mold 33 is originally set with reference to the pass line P (the lower surface position of the workpiece 26), the above-described correction by the plate thickness t is not necessary.
[0077]
Further, it has been described that the maximum molding height WM is obtained by adding the safety value ΔW to the maximum standby position W4. However, the present invention is not limited to this method. For example, the maximum standby position W4 is multiplied by a predetermined safety factor. Also good.
Further, for example, standby positions in a plurality of stages (for example, four stages) are determined in advance, and a standby position that is larger than the maximum standby position W4 and closest to the maximum standby position W4 is selected from these four stages of standby positions. This may be selected and set as the maximum molding height WM. In other words, in this case, when the plurality of stages where the standby position can be set is predetermined as 5 mm, 10 mm, 15 mm and 20 mm, and the maximum standby position W4 is 14 mm, the maximum molding height WM is set to 15 mm. It will be. The standby position may be determined based on the maximum molding height WM.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a punch press according to an embodiment.
FIG. 2 is a control block diagram of a punch press machining controller.
FIG. 3 shows an example of an NC program.
FIG. 4 is an explanatory diagram of a mold management information storage unit.
FIG. 5 is an explanatory diagram of an operation pattern storage unit.
FIG. 6 is an explanatory diagram of used mold order data.
FIG. 7 is a flowchart for setting a stripper standby position.
FIG. 8 is a flowchart of shortening control.
FIG. 9 is a flowchart for setting a punch standby position according to the prior art.
FIG. 10 is an explanatory view showing an example of continuous punching.
FIG. 11 is an explanatory diagram showing a locus during continuous punching of a punch die.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Punch shaft piston, 4 ... Punch shaft servo valve, 5 ... Punch shaft position detector, 6 ... Punch shaft cylinder, 8 ... Punch shaft pressurization chamber, 9 ... Punch shaft pulling chamber, 10 ... Stripper shaft piston, 13 ... stripper shaft servo valve, 14 ... stripper shaft position detector, 15 ... stripper shaft cylinder, 17 ... stripper shaft pressurizing chamber, 18 ... stripper shaft pulling chamber, 19 ... lower die shaft piston, 20 ... lower die shaft servo valve 21 ... Lower die axis position detector, 22 ... Lower die axis cylinder, 24 ... Lower die axis pressurizing chamber, 25 ... Lower die axis pulling lower chamber, 26, 27 ... Magazine, 28 ... ATC device, 29 ... Controller 30 ... XY table, 31 ... Punch die, 32 ... Stripper, 33 ... Die die, 34 ... Machining program, 35 ... Mold management information storage unit, 36 ... Machining command unit, 37 ... Used die information setting unit 38 ... Processed plate thickness information storage unit, 39 ... Standby position information storage unit, 40 ... Punch command unit, 41 ... Operation pattern storage unit, 42 ... Operation pattern setting unit, 43 ... Stroke control unit, 44 ... Opening, 45 ... Punch Axis servo amplifier, 46 ... lower die axis servo amplifier, 47 ... stripper axis servo amplifier, 48 ... starting point, 49 ... continuous punching processing detection part, 51 ... press part, 52 ... punch axis, 53 ... lower die axis, 54 ... Stripper shaft, 55... XY table command unit, 56.

Claims (8)

The workpiece (26) is machined between the punch die (31) and die die (33) that move up and down facing each other, and the standby position of the punch die (31) when the workpiece is moved after machining Punch press that is updated to the normal standby position that is set so as to avoid interference between the punch die (31) and the workpiece (26) sequentially according to the workpiece forming height on the punch die (31) path during movement In the control method of
The normal standby position is set in the die data of the punch die (31) used for the continuous punching process or continuous forming process by the continuous punching process command or continuous forming process command in the processing program . 2. Temporarily replacing a standby position for continuous machining set based on the larger value of the standby position and the first standby position set by the standby position setting command in the machining program. Punch press control method. The upper surface of the work (26) is pressed by a stripper (32) provided so as to be movable in the same direction as the punch die (31) between the punch die (31) and the die die (33) that move up and down facing each other. At the same time, the workpiece (26) is machined between the punch die (31) and the die die (33), and the standby position of the stripper (32) when moving the workpiece after machining is set as the stripper (32) when moving the workpiece. In the punch press control method of updating to the normal standby position set so as to avoid the interference between the stripper (32) and the work (26) sequentially according to the work forming height on the path,
The second standby set in the mold data of the stripper (32) used for the continuous punching process or continuous forming process by the continuous punching process command or continuous forming process command in the processing program. punch press and replaces temporarily at the standby position for continuous processing, which is set based on whichever is larger of the first standby position is set by the standby position setting command in the position and the machining program Control method. The workpiece (26) is machined between the punch die (31) and die die (33) that move up and down facing each other, and the standby position of the die die (33) when the workpiece is moved after machining Punch press that is updated to the normal standby position that is set so as to avoid interference between the die die (33) and the workpiece (26) in accordance with the workpiece molding height on the die die (33) path during movement In the control method of
The normal standby position is set in the die data of the die die (33) used for the continuous punching process or continuous forming process by the continuous punching process command or continuous forming process command in the processing program . 2. Temporarily replacing a standby position for continuous machining set based on the larger value of the standby position and the first standby position set by the standby position setting command in the machining program. Punch press control method. In the control method of the punch press according to claim 1, 2, or 3,
A punch press control method comprising: returning the standby position for continuous processing to the original normal standby position after completion of the continuous punching process or continuous forming process. The punch mold (31) and die mold (33) provided opposite to each other and freely movable up and down, and the vertical movement of the punch mold (31) and die mold (33) are controlled between them. The workpiece (26) that has been loaded is machined, and the standby position of the punch die (31) when moving the workpiece after machining is sequentially changed according to the workpiece molding height on the punch die (31) path when moving the workpiece. In a punch press control device comprising a controller for updating to a normal standby position set to avoid interference between the punch die (31) and the workpiece (26),
The controller (29) uses the normal standby position in accordance with a continuous punching process command or continuous molding process command in the processing program, and the die of the punch mold (31) used for the continuous punching process or continuous molding process. Temporarily set to the standby position for continuous machining set based on the larger one of the second standby position set in the data and the first standby position set by the standby position setting command in the machining program. A control device for a punch press, characterized in that Punch mold (31) and die mold (33) provided opposite to each other and movable up and down, and the same as the punch mold (31) between the punch mold (31) and die mold (33) A stripper (32) that is provided so as to be movable in the direction, and controls the vertical movement of the punch die (31) and die die (33) to hold the upper surface of the workpiece (26), and the workpiece carried between them ( 26), the stripper (32) standby position when moving the workpiece after machining, and the stripper (32) and workpiece (26) in order according to the workpiece forming height on the stripper (32) path when moving the workpiece In a punch press control device comprising a controller for updating to a normal standby position set to avoid interference with
The controller (29) converts the normal standby position into the die data of the stripper (32) used for the continuous punching process or continuous forming process according to the continuous punching process command or continuous forming process command in the processing program. Temporary replacement with the standby position for continuous machining set based on the larger value of the second standby position that has been set and the first standby position that has been set by the standby position setting command in the machining program This is a punch press control device. The punch mold (31) and die mold (33) provided opposite to each other and freely movable up and down, and the vertical movement of the punch mold (31) and die mold (33) are controlled between them. The workpiece (26) that has been loaded is machined, and the standby position of the die mold (33) when moving the workpiece after machining is sequentially changed according to the workpiece molding height on the die mold (33) path when moving the workpiece. In a punch press control device comprising a controller for updating to a normal standby position set to avoid interference between the die mold (33) and the workpiece (26),
The controller (29) is a die of the die mold (33) that uses the normal standby position for the continuous punching process or continuous forming process according to the continuous punching process command or continuous forming process command in the processing program. Temporarily set to the standby position for continuous machining set based on the larger one of the second standby position set in the data and the first standby position set by the standby position setting command in the machining program. A control device for a punch press, characterized in that The punch press control device according to claim 5, 6 or 7,
The controller (29) is a punch press control device, wherein after the continuous punching process or continuous forming process is completed, the standby position for continuous processing is returned to the original normal standby position.

Images