JP2005297010A - Transfer press operating method and transfer press machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a press machine to fully exhibit its characteristics while ensuring the smooth and sure transferring operation of a transfer device. <P>SOLUTION: A designated information storing means, a process progression controlling means, a present designated slide position extracting means, an input signal switch controlling means for a slide, a present designated transfer position extracting means and an input signal switch controlling means for transfer are provided. In this way, process numbers are progressed to a fixed direction at a fixed rate; a present designated slide position corresponding to the present process number read during the progression can be extracted; also, an input signal to a slide controlling device can be switched to a signal equivalent to the extracted present designated slide position; further, the present designated transfer position corresponding to the present process number can be extracted; also, an input signal to a transfer controlling device can be switched to a signal equivalent to the extracted present designated transfer position; and, every time a process progression starting command is emitted, operation from the reading of the present process number to the input for switching the signal can be repeatedly practiced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention controls a slide to a position corresponding to an input target slide position signal while driving a slide raising / lowering motor by a slide control device, and inputs a conveyance member to an input target conveyance while driving a conveyance motor by a conveyance control device. The present invention relates to a transfer press operation method and a transfer press machine which perform conveyance control to a position corresponding to a position signal and perform predetermined press processing on the processed material transferred (transferred).

  2. Description of the Related Art A transfer press machine is known in which a processing material conveyance (transfer) device is combined with a press machine. The press machine is roughly classified into a stored energy drive system using a flywheel effect and a servo motor drive system. In addition, the transport device has a simple structure, versatility, adaptability, equipment cost, space saving, and adjustment work compared to a mechanical synchronous coupling system (a system that is mechanically connected to a press machine so that it can be synchronized). In many cases, an electrical synchronous coupling method that is advantageous in terms of the above is employed.

  The stored energy drive type press machine 10W has a slide 15 (upper die) stationary by a crank mechanism 11 (crankshaft 12, connecting rod 14) constituting a slide drive mechanism as shown in FIG. The bolster 18 (lower mold) on the side is formed so that it can be driven up and down (see Patent Document 1). 13 is a main gear, 24 is a gear, 23 is a rotating shaft, and 20 is a clutch / brake device (brake plate 21 and clutch plate 22). A flywheel 25 is rotationally driven by a motor 30I (motor shaft 31) connected via a drive belt 26 and a pulley 32H. The induction motor (30I) is started and stopped by the driver 35.

  In such a press machine 10W, the rotational energy accumulated in the flywheel 25 is selectively transmitted to and disconnected from the crankshaft 12 via the clutch / brake device 20 (21, 22) to perform press operation / stop. It is. The rotational energy of the flywheel 25 is released in the processing region where the press processing (molding) is performed, and the rotational speed decreases. Then, the rotational energy is accumulated (recovered) in the non-processed region, and the rotational speed is restored. By repeating this, pressing can be performed continuously.

  As shown in FIG. 10 corresponding to FIG. 9, the servo motor drive type press machine 10 </ b> S utilizes the advantages of the crank mechanism 11 (generation of a large load value, simple structure, robustness, low cost, etc.) and the crankshaft 12. The servomotor 30S can be directly driven to rotate (see Patent Document 2).

  That is, in FIG. 10 expressed in a simplified manner for convenience of comparison, the press machine 10S controls the rotation of the servo motor 30S connected to the crank mechanism 11 (12, 13, 14) via the drive gear 32G (motor shaft 31). Thus, the slide 15 is driven up and down while the rotation of the crankshaft 12 is controlled.

  The press machine 10S can selectively adjust the change in rotational speed by reversible rotation of the crankshaft 12 (switchable between forward rotation and reverse rotation) as compared with the stored energy drive system. Further, the slide speed can be reduced, fixed, or temporarily stopped (see FIG. 13) in the press working area. Furthermore, the press operation (see FIG. 14) can be performed without necessarily rotating the crankshaft 12 360 degrees. That is, various slide motions can be selected and switched, and the applicability to the press working mode is wide.

  Here, in any press machine (10W or 10S), when the combined synchronous transfer type transfer device (transfer device) is, for example, a three-dimensional transfer type, each dedicated servo motor is independently controlled for rotation. By doing so, the three drive shafts can be transported separately.

  That is, as shown in FIG. 11B, the pair of feed bars are reciprocated in the X (advance / return operation) direction, the Y (clamp / unclamp operation) direction, and the Z (lift / down operation) direction. Thereby, the processing material (workpiece) can be sequentially transferred (transferred) in the X direction (advance direction... Feed direction). Each feed bar is provided with a plurality of fingers and a vacuum cup for clamping the work inward. Note that FIG. 11A shows a case of a two-dimensional transport type.

  The operation start timing and operation end timing of each transport operation are generated and output based on, for example, the rotation angle (crank angle θ) of the crankshaft 12 that rotates clockwise as shown in FIG. This is a crank angle setting (following) method. For example, the advance operation region has a crank angle of 300 to 0 to 60 degrees, the operation start timing is 300 degrees, and the operation end timing is 60 degrees. Similarly, the down operation area is 60 to 90 degrees, the unclamping operation area is crank angle 90 to 120 degrees, the lean operation area is 120 to 180 to 210 degrees, the clamping operation area is 210 to 270 degrees, and the lift operation area is 270. ~ 300 degrees.

Examples of the crank angle setting method include Patent Document 3 and Patent Document 4. Patent Document 3 makes it possible to follow the control of each axis of the feeder very well with the crank angle. Patent Document 4 discloses a crankshaft rotation angle value setting means for starting / ending timing, a motion curve setting calculating means, and the like. It relates to the improvement of safety adequacy with respect to mold dimensions.
Japanese Patent Laid-Open No. 10-277784 JP 2003-205395 A Japanese Patent Publication No.7-73750 Japanese Patent Publication No. 7-75741

  By the way, in the case of the press machine 10W, since the crankshaft 12 rotates in one direction and the slide motion is determined, once the transport motion (including each operation start timing and operation end timing) is set, Can ensure a smooth and reliable transporting operation by simply making a simple adjustment according to the SPM (rotational speed).

  However, in the case of the servo motor drive type press machine 10S, various slide motions are selectively switched in order to perform a press operation that fully exhibits its characteristics (performance). Naturally, even if the transport motion is once set, it is necessary to reset the transport motion so that it matches the current slide motion each time the slide motion is selected and switched. In addition, if there is a possibility of inconsistency between the reset transport motion and the slide motion that has been selectively switched, a review and reexamination are necessary.

  In general, the cycle speed on the conveyor side is slower than the cycle speed on the press machine side. Therefore, the characteristics on the press machine 10S side can be accommodated within the performance of the conveyor (moving speed, withstandable impact). There is a tendency for operations to limit (performance). Moreover, each time (slide motion ⇔ transport motion) needs to be repeatedly reviewed (examined) each time, and careful selection (setting) is forced. It is very troublesome for operators (or operators), takes a long time, and is difficult to handle.

  For this reason, an alternate operation method may be used in practice. In this operation method, the crankshaft 12 is forcibly stopped at a set position (for example, top dead center), and a conveying operation is performed during the stop. After this transport operation is completed, the crankshaft is re-rotated to return to slide up / down control. However, the constant adoption of this method hinders the widespread use of the servo motor drive type press machine 10S, which boasts high speed and slide motion selectability.

  In particular, when a slide motion unique to the press machine 10S as described below is selected, there is a fatal defect that makes it difficult or impossible for the transport apparatus to follow.

  That is, in the case where the slide motion of the press machine 10W can be represented by, for example, the continuous movement locus Rcnt shown by the dotted line in FIG. 13, for the current operation of the press machine 10S, for example, the slide motion shown by the solid line in FIG. A temporary ascending operation is entered at the location “A”.) When Rs is selected, a situation occurs in which the transport device temporarily reverses at the location “A” and returns to the normal operation again. This is wasteful of energy and reduces productivity due to wasted time. In addition, an excessive impact may be applied to the control system including the servo motor 30S and the transport device, which may cause failure or damage.

  Next, in the press machine 10S, the slide motion (trajectory Rstp) indicated by the solid line in FIG. 13 is selected. The generation output of the transport operation start timing signal is based on the crank angle θ21 as in the press machine 10W. Let us consider a case where a crank angle setting method for generating and outputting is adopted. In this case, the crankshaft 12 enters a temporary stop (for example, material heating) state at a crank angle θ2 that is before the crank angle θ21. The slide 15 is held at a certain height (position H2). Then, after a predetermined time (heating time) has elapsed, the crankshaft 12 rotates again and the slide 15 descends. Therefore, the conveyance operation start timing signal cannot be generated and output during the heating time. After a certain period of time has elapsed, the crank angle θ becomes the crank angle θ22 (equivalent to the angle θ21) for convenience of illustration, and a transport operation start timing signal can be generated and output only.

  In other words, during the temporary stop period, it becomes a waste time during which the carrying operation cannot be performed. Moreover, in order to start and end the transfer operation within a short time excluding this pause time (dead time), the transfer device (large inertia) needs to be further accelerated, moved at high speed, and rapidly decelerated. In practice, it is hard to be allowed. That is, the characteristic (temporary stop operation) of the press machine 10S cannot be executed due to the relationship with the conveying device side.

  Further, in the press machine 10W adopting the crank angle setting method, when the slide motion can be represented by a locus Rw indicated by a dotted line in FIG. 14 (having the same sine wave shape as the above-mentioned Rcnt), the crank angle θ13 is conveyed. In many cases, the transfer operation is performed with the start timing and the crank angle θ34 set as the transfer operation end timing. However, with the same setting as in this case, it is not possible to execute the repetitive (reciprocating) half-rotation operation of the press machine 10S.

  That is, the slide motion in the case of causing the press machine 10S to perform a half-rotation operation has a locus Rs indicated by a solid line in FIG. The actual slide stroke is 1/2 (H / 2) of the slide stroke (Hst) when the crankshaft 12 is rotated once. That is, it is selected when the crankshaft 12 is reversed within half a rotation (angle θ1 → θ4 → θ1) to shorten time (speed up) and improve productivity. However, since the detection order [angle θ13 (θ34) → angle θ34 (θ13)] is different for each press processing cycle, it is impossible to generate and output an appropriate operation start / end timing signal by adopting the crank angle setting method. .

  Thus, it is pointed out that press operation with forward / reverse rotation, temporary rotation stop, and repetitive half rotation in the middle cannot be realized due to the crank angle setting method and the reason on the conveying device side. These problems must be solved by all means in order to fully exhibit the characteristics of the servo motor drive type press machine 10S.

  An object of the present invention is to provide a transfer press operating method and a transfer press machine that can fully exhibit the characteristics of a servo motor driven press machine while ensuring a smooth and reliable transfer operation of the transfer device. Is to do

  Conventionally, in an electric synchronous coupling type conveying apparatus, it is assumed that the press machine 10W is slid up and down by a crankshaft rotated at a constant speed in one direction, and a crank angle that is convenient when the slide motion is constant Of course, he was looking at adopting the setting method. Specifically, based on the crank angle, one or two specified crank angles (operation start angle or / and operation end angle) are detected to cover each conveyance operation region. That is, the start / end timing of each transport operation is regarded as one or two “points” on the slide motion. Thus, the appearance of a timing signal that appears to be reversed and a phenomenon in which a plurality of identical timing signals are generated and output, a phenomenon in which a timing signal is not generated and output even though a slide motion is in progress have occurred. Judged to be. Introducing an electrically synchronous coupling type transport device and a crank angle setting type timing generation output means to the servo motor drive type press machine 10S characterized by the selectability of slide motion in this way is also logical. There are contradictions and inconsistencies remain.

  Here, the present invention relates to a novel concept that allows the conveyance device side to be followed regardless of the type (trajectory) of the selected slide motion in view of the slide motion selectability of the press machine 10S. In other words, it is not a crankshaft setting method in which the start / end timing of the transport operation is considered as “points”, but a synchronous operation based on the progression of process numbers that can be handled as “lines”.

  Specifically, according to the present invention, ideal slide position information having a common process number ("line") and conveyance position information are stored as designation information associated with each process number, and one press is performed. By moving the process numbers in order of the process numbers at a constant speed (continuous movement) within the machining cycle, the slide position can be aligned with the specified slide position (specified current information) and the transfer position can be set to the specified transfer position (specified current information). It is formed so that it can be matched. As long as the process number is in progress, the transfer operation can be continued regardless of the selected slide motion.

  Specifically, the transfer press operation method according to the first aspect of the present invention controls the raising / lowering of the slide to the position corresponding to the input target slide position signal while driving the slide raising / lowering motor by the slide control device, and the transfer control device. A transfer press operation method in which a conveyance member is controlled to be conveyed to a position corresponding to an input target conveyance position signal while a conveyance motor is driven, and a predetermined pressing process is performed on the conveyed processing material. Is the specified slide trajectory information where the vertical axis is the specified slide position and the specified transport trajectory information which is the specified transport position, and the process number is changed from the first process number to the last process number based on the process progress start command. The current process number is read while the process is progressing with reference to the specified slide trajectory information. The current designated slide position corresponding to is extracted and the target slide position signal is switched to the signal corresponding to the extracted current designated slide position, and the current designation corresponding to the read current process number is referenced with reference to the designated conveyance path information. Extract the transfer position and switch the target transfer position signal to the signal corresponding to the extracted current specified transfer position, and the process number is set to the first process number based on the process progress start command issued again after reaching the last process number. From the current process number to the switching of the target slide position signal and the target transport position signal is repeatedly executed.

  In the transfer press machine according to the second aspect of the present invention, the slide control device drives and controls the slide lift motor, and the slide can be controlled to move up and down to a position corresponding to the target slide position signal inputted and transported by the transport control device. Press machine that is capable of controlling the conveyance of the conveying member to the position corresponding to the inputted target conveying position signal while driving the motor for driving, and capable of performing a predetermined pressing process on the conveyed processing material , The designated information storage means capable of storing the designated slide trajectory information whose horizontal axis is the process number and the vertical axis is the designated slide position and the designated transport locus information which is the designated transport position, and the first based on the process progress start command A process progress control means for progressing the process from the process number to the last process number at a constant speed, and the stored designated scan The current designated slide position extracting means for extracting the current designated slide position corresponding to the current process number read in progress with reference to the id locus information, and the current designated slide from which the target slide position signal to be input to the slide control device is extracted A slide input signal switching control means for switching to a signal corresponding to the position, and a current designated conveyance position extraction for extracting a current designated conveyance position corresponding to the current process number read during the progress with reference to the stored designated conveyance locus information And a transfer input signal switching control means for switching the target transfer position signal input to the transfer control device to a signal corresponding to the extracted current specified transfer position, and a process progress control means, a currently specified slide position extraction means, Slide input signal switching control means, current designated transport position extracting means and transport input signal switching control means are opened. Repeat every time the command is issued is executable form.

  According to a third aspect of the present invention, there is provided a transfer press machine in which the rotational movement of the slide lifting motor can be converted into the vertical movement of the slide via a crank mechanism, and one reverse position detection means and the other reverse position detection means; The process progress control means is configured to automatically output a process progress start command on condition that each inversion position is detected.

  According to a fourth aspect of the present invention, there is provided a transfer press machine comprising a single drive switching control means, wherein when the slide control is selected using the single drive target selection means, the currently designated slide position extracting means and the slide input signal switching are selected. The control means is switched so that it can be driven independently, and when the transport control is selected, the currently designated transport position extracting means and the transport input signal switching control means are switched so that they can be driven independently.

  According to the transfer press operation method of the first aspect of the present invention, the characteristics of the servo motor driven press machine can be fully exhibited while ensuring a smooth and reliable transport operation.

  Further, according to the transfer press machine according to the invention of claim 2, the characteristics of the press machine of the servo motor drive system are ensured while ensuring the smooth and reliable transfer operation of the transfer device as in the case of the invention of claim 1. It can be fully demonstrated, and it is easy to implement and easy to handle.

  Further, according to the transfer press machine of the invention of claim 3, since a process progress start command can be automatically output, the same effect as in the case of the invention of claim 2 can be obtained, and further handling is possible. It is much simpler.

  Further, according to the transfer press machine of the invention of claim 4, since it is formed so as to be able to be driven independently, in addition to being able to achieve the same effect as the invention of claim 2 and claim 3, Adjustment and confirmation of the die height when changing the die on the press machine side and adjustment and confirmation of the clamping state when changing the processing material on the conveying device side can be done quickly and easily, which is also effective for saving energy.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
This transfer press machine (10S, 40) is suitable for carrying out this transfer press operation method. As shown in FIG. 1 to FIG. 3, designated information storage means 64M and process progress control means (61, 62). Current designated slide position extracting means (61, 62), slide input signal switching control means (61, 62), current designated transport position extracting means (61, 62), and transport input signal switching control means (61, 62) The slide lift control and the transport operation control are executed in synchronization with the progress of the process number N, which is common.

  That is, the transfer press machine (10S, 40) can advance the process number Ni at a constant speed in one direction from the first process number N1 to the last process number Nn based on the process progress start command Sst. The current designated slide position Hpr corresponding to the current process number Npr read in progress with reference to the information SLD can be extracted, and the target slide position signal Sh input to the slide control device 37 is extracted to the extracted current designated slide position equivalent signal. It is possible to switch, and it is possible to extract the current designated transport position (Xpr, Ypr, Zpr) corresponding to the current process number Npr read in progress with reference to the designated transport locus information TRD and input it to the transport controllers 45AR, 45CU, 45LD. Target transport position signals Sar, Scu, Sld to be extracted to the currently designated transport position equivalent signal Based on the process start instruction Sst that is reissued after reaching the last process number Nn, the process number is advanced again at a constant speed in one direction from the first process number to the last process number and It is configured so that it can be repeatedly executed from reading of the process number to switching of the target slide position signal and the target transport position signal.

  First, the basic configuration / function of the press machine 10S is as shown in FIG. 1 schematically shown and FIG. 2 (block diagram) mainly showing the operation control device 60. While controlling the drive of the motor (servo motor 30S), the slide 15 can be controlled to move up and down to a position corresponding to the input target slide position signal Sh, and the transport motor (servo motor 46) is driven and controlled by the transport controller (45). In addition, the conveyance member (feed bar 41) constituting a part of the conveyance device 40 can be conveyed to a position corresponding to the input target conveyance position signal, and a predetermined pressing process can be performed on the conveyed processing material. Is formed.

  The mechanical structure of the press machine 10S will be described mainly with reference to FIG. 1 (and FIG. 10). A slide 15 is mounted on a main body (including a crown, a column, a frame, a bed, etc.) 11 so as to be reciprocally movable in the vertical direction. The lifting power for the slide 15 is supplied from the servo motor 30S via the crank mechanism (crankshaft 12, connecting rod 14) and gear train (13, 32G). In other words, the rotary motion of the slide lifting motor 30S can be converted into the vertical (lifting ... straight) motion of the slide 15 via the crank mechanism.

  The servo motor 30 </ b> S is formed from an AC servo motor whose rotation is controlled by the slide control device 37. The slide control device 37 includes a controller (CNTR) 37C that forms a position / speed control unit and the like shown in FIG. 1 and a servo amplifier 37A that forms a current control unit. A target slide position signal Sh is input to the controller 37C. The speed / position signal corresponding to the motor rotation angle equivalent signal θm detected by the encoder 30E is fed back. In the present invention, an electrical signal corresponding to the extraction current slide position Hpr described later in detail is input to the controller 37C instead of the target slide position signal Sh during the process.

  The servo amplifier 37A receives a speed signal from the controller 37C, feeds back a speed signal corresponding to a change in the motor rotation angle equivalent signal θm, and outputs a current signal (torque equivalent signal) Si for driving the motor. Thus, the vertical position of the slide 15 can be accurately controlled to a position corresponding to the target slide position signal Hpr (Sh) by rotation control (torque control) of the servo motor 30S.

  The encoder 12E attached to the crank mechanism (crankshaft 12) outputs a rotation angle equivalent signal θk of the crankshaft 12. By converting this signal θk, the vertical position H of the slide 15 can be known. In this embodiment, the slide position Hi is displayed on the display unit 66.

  The conveyance device 40 has a three-dimensional conveyance (conveyance) type structure and corresponds to each of a conveyance mechanism including a pair of feed bars 41 (one of which is not shown in FIG. 1) and three orthogonal axes. 3 types of servo motors 46 (advance / return 46AR, clamp / unclamp 46CU, lift / down 46LD) and corresponding transfer control devices 45AR, 45CU, 45LD, and servo motors 46AR, 46CU, It is formed so as to be able to carry by the rotation control of 46LD.

  Each of the transport control devices 45AR, 45CU, 45LD is formed of a controller (CNTR) 45C and a servo amplifier 45A shown in FIG. 1 as in the case of the slide control device 37 (37C, 37A), and a feedback signal (corresponding to the motor rotation angle). The signals θmar, θmcu, θmld) are obtained from the encoders 47AR, 47CU, 47LD. Siar, Sic, and Sild are current (torque equivalent) signals for driving the motor.

  In addition, although it demonstrates as a three-dimensional direction conveyance type which can convey the processing material to a three-dimensional direction, a two-dimensional direction conveyance type [refer FIG. 11 (A). ], The present invention can be implemented.

  In FIG. 2, a computer 60 constituting the operation control device includes a CPU (including a clock function) 61, a ROM 62, a RAM 63, a memory (ferroelectric memory) 64, an operation unit (PNL) 65, a display unit (IND) 66, and It includes a plurality of interfaces (I / F) 67A, 67B, 67C, 69, and has functions such as setting, selection, command, and control, and controls the operation of the entire transfer press machine (10S, 40).

  The interface 67A outputs the target slide position signal Sh (or Hpr) to the slide control device 37 (37C), the interface 67B outputs the brake Sb to the mechanical brake 29, and the interface 67C receives a crank angle equivalent signal from the encoder 12E. θk is input.

  Further, the interface 69 outputs an advance / return operation command signal Sar (Sa for advance, Sr for return) to the transport controller 45AR (controller 45C, servo amplifier 45A) for advance / return operation, and clamp / un A clamp / unclamp operation command signal Scu (Sc is used for clamping and Su is used for unclamping) is output to the conveyance control device 45CU (45C, 45A) for clamping operation. Further, a lift / down operation command signal Sld (Sl for lift and Sd for down) is output to the transport control device 45LD (45C, 45A) for lift / down operation.

  In each of the operation signals Sar (Sa, Sr), Scu (Sc, Su), Sld (Sl, Sd), the rotation mode designation information (acceleration, maximum speed, deceleration, etc.) of the servo motors 46AR, 46CU, 46LD is included. Movement amount). That is, a predetermined amount (distance) in accordance with a trapezoidal trajectory that gradually increases (accelerates) the rotation speed of the servo motor 46 to smoothly start, moves at a maximum speed, and gradually decreases (decelerates) the rotation speed to stop smooth. Only one pair of feed bars 41L can be moved in each movement direction.

  In the first embodiment, the process progress control means (61, 62), the currently designated slide position extracting means (61, 62), the slide input signal switching control means (61, 62), the current designated transport position extracting means ( 61, 62), the input signal switching control means for transport (61, 62) and the repeated execution control means (61, 62), the means annotated with (61, 62) after the item, respectively, It is assumed that the control program is stored in a ROM 62 and a CPU 61 having a program execution function. In other words, the components are constructed mainly by software.

  The same applies to the one inversion position detection means (61, 62) and the other inversion position detection means (61, 62) in the second (and third) embodiment. The same applies to the single drive switching control means (61, 62) in the fourth embodiment.

  Each control program such as the process progress control means may be downloaded from the outside through a data communication line, either in a form stored in a memory 64 that can be stored or stored in a hard disk device (not shown). It can also be implemented as an operational format.

  As shown in FIG. 1, the designation information storage means 64M is in a table format (displayed in two areas 64MP and 64MT for convenience of explanation), the horizontal axis is the process number N, and the vertical axis is the designated slide. The designated slide trajectory information SLD which is the position H and the designated transport trajectory information TRD whose horizontal axis is the process number N and whose vertical axis is the designated transport positions X, Y and Z can be stored. The designated slide track information SLD and the designated transport track information TRD having the same process number Ni are designated information.

  A plurality of types of designation information can be stored in the designation information storage means 64M, and one designation information (SLD, TRD) used this time can be selected using the information selection means (65). Setting (creation) of the designation information is performed by referring to the information input screen displayed on the display unit 66 and performing key input using the information setting unit (operation unit 65).

  The designation information (SLD and TRD) may be created in another place and installed in the operation control device (60) via a medium or online.

  Here, the process number Ni is defined as specifying the combination of the designated slide position Hi and the designated transport positions Xi, Yi, Zi, and the horizontal axis used when defining the slide motion (curve) in the conventional example. This is a new concept (“line”) different from the crank angle θ as a “point”.

  In other words, a series of changes in the slide position Hi necessary for carrying out a certain press working (press operation) cycle is regarded as one slide locus (for example, “Rs” in FIG. 1), and the slide locus Rs for one cycle. If the concept of process number Ni that divides (numbers) a plurality of press processes is introduced, the designated slide trajectory information SLD can be created by designating each slide position Hi corresponding to each press process number Ni. it can.

  Similarly, a series of changes in the transport positions Xi, Yi, and Zi when performing a certain pressing (press operation) cycle is regarded as one transport locus (for example, “Rar1, Rcu1, Rld1” in FIG. 1). In addition, the same process number Ni as in the case of the slide track is introduced to divide (number) the transfer track within one cycle, and specify each transfer position Xi, Yi, Zi corresponding to each process number Ni. Thus, the designated transport locus information TRD can be created.

  The designated slide locus information SLD and the designated conveyance locus information TRD need not take the form of a motion (curve) because the horizontal axis is not determined as the crank angle θ as in the conventional example. The storage form of information (data) is not limited.

  However, for the convenience of displaying on the display unit 66 in order to reconfirm the authenticity of the input slide position and transport position when setting the slide position Hi and transport position Xi, Yi, and Zi, the assumed horizontal axis ( For example, a motion (curve) corresponding to time) may be edited and displayed.

Now, the process progress control means (61, 62) selects selected information (designated slide track information SLD, specified transport track information) based on a process progress start command (Sst, see FIG. 3) issued automatically or manually. TRD) is a means for proceeding at a constant speed (ST12 in FIG. 3) all processes (for one press machining cycle) from the first process number N0 to the last process number Nn. Although the value of n can be selected as an arbitrary number, in the first embodiment, description will be made assuming that n = 2 ¹³ (= 8192). That is, the value of n can be set and changed in light of the control characteristics, press working mode, transport operation mode, and the like.

  “Process progression” refers to advancing (moving) the horizontal axis (process number N) in the left-to-right direction at a predetermined fixed speed in FIG. For example, the process number Ni is counted up (incremented) at regular time intervals. In other words, by advancing the process numbers one by one in the order of the process numbers at a constant speed, the horizontal axis constituting the designated slide trajectory information SLD and the designated transport trajectory information TRD is changed from a qualitative one to a quantitative one called time. can do.

  Therefore, during the press operation (process progress), the designated slide trajectory information SLD can be grasped as a slide motion (curve Rs) in which the horizontal axis shown in FIG. 1 is written in parentheses and the vertical axis is the slide position Hi. It can be done. Similarly, in the case of the designated transport trajectory information TRD, it is grasped as a transport motion (curves Rar1, Rcu1, Rld1) in which the horizontal axis shown in FIG. 1 is the parenthesized time and the vertical axis is the transport positions Xi, Yi, Zi. It is possible. Note that the slide motion (curve Rs) and the like can be displayed on the display unit 66.

  When the process progress start command Sst is issued immediately before entering the cycle (YES in ST10 of FIG. 3), the selection information reading means (61, 62) is the designated slide locus information SLD, The designated transport information TRD and the selected and set traveling speed Ssp are read (ST11).

  Then, the process progress control means (61, 62) creates the slide motion (curve Rs) and the transport motion (curves Rar1, Rcu1, Rld1) and the process number (corresponding to each management time scale corresponding to the selected progress speed) Ni Thus, the respective motions (curves Rs, Rac1, Rcu1, Rld1) are specifically promoted (moved) (ST12). In this sense, the process progress control means can be referred to as slide / conveyance motion creation / promotion promotion control means.

  The progress (movement) speed of the process number Ni is constant, but the absolute value can be changed according to the press working mode (and / or the transport mode). That is, the absolute value (advance speed) may not be constant. Such technical matters can be introduced for the first time on the premise that the press machine 10S is driven by a servo motor. That is, since the follow-up speed of the actual slide position Hi with respect to the target slide position signal Hpr (Sh) is high, if the process number (time scale) is specified, the slide position Hi can always be accurately positioned and controlled to the target slide position. Because it can. The same applies to the transport device 40.

  In other words, in the press machine 10W having the flywheel (25) in which the motor (30I) rotates in one direction at a constant speed and the slide position is uniquely determined by the crank angle θ of the eccentrically rotated crankshaft, It cannot be introduced.

  The current process number reading means (61, 62) reads the current process number Ni during the progress (ST13). Subsequently, the current designated slide position extracting means (61, 62) and the current designated transport position extracting means (61, 62) operate (ST14, ST15).

  The current designated slide position extracting means (61, 62) refers to one designated slide locus information selected from the designated slide locus information SLD stored in the designated information storage means 64M, and corresponds to the current process number Npr. The currently designated slide position Hpr to be extracted is extracted (ST14). The current process number Npr is the process number at the time of extraction (current time), that is, the current time Tpr.

  The current designated slide position Hpr extracted in this way is converted into an electric signal in a form corresponding to the target slide position signal Sh by the signal conversion means (61, 62) and the slide input signal switching control means (61, 62). ) Is input to the slide control device 37 (37C) instead of the target slide position signal Sh (ST16).

  That is, every time the process number N (i-1) advances to the next process number Ni, the target slide position signal Sh is switched and input to a signal corresponding to the extracted current designated slide position Hi (Hpr) The position control of the slide 15 is executed. From this point of view, it is understood that it is preferable in terms of control that the smaller the change in slide motion (curve Rs), the smaller the number of process numbers N to be set, and the greater the change, the greater the number of press process numbers N to be set. Is done.

  The currently designated transport position extracting means (61, 62) refers to one designated transport locus information selected from the designated transport locus information TRD stored in the designated information storage means 64M, and corresponds to the current process number Npr. The currently designated transport positions Xpr, Ypr and Zpr to be extracted are extracted (ST15).

  The current designated transport positions Xpr, Ypr, Zpr extracted in this way are converted into electrical signals in a form corresponding to the target slide position signals Sar, Scu, Sld by the signal conversion means (61, 62) and input for transport. By the function of the signal switching control means (61, 62), the target slide position signals Sar, Scu, Sld are input to the transport control devices 45AR, 45CU, 45LD, respectively (ST17).

  That is, every time the process number N (i-1) advances to the next process number Ni, the target transport position signals Sar, Scu, Sld are switched to signals corresponding to the currently designated transport positions Xpr, Ypr, Zpr extracted. 3 position conveyance control of the feed bar 41 is executed.

The above series of operations is managed by the process number counting function (ST18) and executed for each process number Ni (YES in ST18, ST12-). After the last process number Nn (= N2 ¹³ ) is executed, the operation ends (YES in ST18), and the standby state is entered until there is another command (YES in ST10) (NO in ST19, NO in ST10, NO in ST19, …).

  The repetitive execution control means (CPU 61, ROM 62), each time the process progress start command Sst is issued again (YES in ST10), the process progress control means, the currently designated slide position extracting means, the slide input signal switching control means, The designated transfer position extracting unit and the transfer input signal switching control unit are repeatedly executed (ST11 to ST18). If there is an operation stop command (YES in ST19), the operation is stopped.

  In the first embodiment having such a configuration, the transfer press operation method can be implemented as follows.

  Based on the process progress start command (YES in ST10 in FIG. 3), the designated slide trajectory information SLD, the designated transport trajectory information TRD, and the speed Ssp that are stored in the designated information storage means 64M and selected prior to the transfer press operation are read. (ST11).

Then, the process progress control means (61, 62) advances the process number Ni at a constant speed in one direction from the first press process number N0 to the last press process number Nn (= N2 ¹³ ) (ST12). While this process is in progress, the current process number Ni (Npr) is read (ST13).

  Subsequently, the current designated slide position extraction means (61, 62) refers to the designated slide trajectory information SLD in FIG. 1, and the current designated slide position Hi (Hpr) corresponding to the read current press process number Ni (Npr). Is extracted (ST14). An electric signal corresponding to the currently designated slide position Hi (Hpr) is generated.

  At the same time, the current designated transport position extracting means (61, 62) refers to the designated transport trajectory information TRD in FIG. 1, and the current designated transport position Xpr corresponding to the read current process number Ni (Npr). , Ypr, Zpr are extracted (ST15). Each electric signal corresponding to each currently designated slide position Xpr, Ypr, Zpr is generated.

  Then, the slide input signal switching control means (61, 62) switches and inputs the current designated slide position (Hpr) equivalent signal to the slide control device 37 instead of the target slide position signal Sh (ST16). The slide control device 37 (37C, 37A) controls the rotation of the servo motor 30S based on the currently designated slide position equivalent signal.

  The slide position Hi during the rotation control is increased or decreased by a minute position around the designated slide position as the process number N continues. As a result, the slide position H is quickly and accurately positioned at a predetermined position Hi for each process number Ni defined by the designated slide locus information SLD.

  At the same time, the transport input signal switching control means (61, 62) replaces the current designated transport position (Xpr, Ypr, Zpr) equivalent signal with the target transport position signals Sar, Scu, Sld, and transport control devices 45AR, 45CU. , 45LD and input (ST17). Each transport control device 45 (45C, 45A) controls the rotation of the servo motors 46AR, 46CU, 46LD based on the currently designated transport position equivalent signal.

  Each conveyance position Xi, Yi, Zi during the rotation control is raised or lowered by a minute position with each designated conveyance position as the center as the process number N continues. As a result, each transfer position is quickly and accurately positioned at a predetermined position Xi, Yi, Zi for each process number Ni defined by the specified transfer locus information TRD.

  That is, the designated slide trajectory information SLD (Rs) includes a temporary ascending process in the portion “A” where the slide is descending. Therefore, it is impossible to adopt the slide motion (curve Rs) in the press machine 10W that always has a sine wave-shaped slide motion (curve Rcnt) indicated by a dotted line in FIG.

  Also, the designated transport locus information TRD is a locus Rar1, Rcu1 in which the progress in one direction (increase direction) of the process number N is regarded as a “line” and corresponding to this “line”, as in the case of the designated slide locus information SLD. , Rld1 is carried out, the conventional problems related to the carrying operation (temporary reverse carrying operation is performed) can be eliminated.

  Since the process number N proceeds in one direction at a constant speed, each process number (Npr) can pass only once in one press cycle even if there are a plurality of places where the slide positions are the same. The operations other than the corresponding transport operations corresponding to the respective process numbers Npr are never performed. That is, the processing material can be reliably conveyed by the conveyance (transfer) motion (curves Rar1, Rcu1, and Rld1) that is optimal for the press processing according to the selected slide motion (curve Rs).

When one press working cycle is completed, that is, after reaching the last press process number Nn, when the press process progress start instruction Sst is automatically issued again (or manually), the repeated execution control means ( 61, 62) proceed again at a constant speed in one direction from the first press process number N0 to the last press process number Nn (= N2 ¹³ ) while activating each means according to the program procedure. The process from reading the current process number Npr (Npr) (ST13) to each signal switching (ST17) is repeatedly executed (NO in ST18, NO in ST19, YES in ST10).

  Thus, according to the first embodiment, the characteristic (correct) of the servo motor drive type press machine 10S is ensured while ensuring a smooth and reliable transfer operation of the transfer device 40 (41) of the electric synchronous coupling method. Rotation, reverse rotation, speed change, and rotation stop are free, and the slide speed can be lowered, stabilized, or bottom dead center stopping operation etc.). For example, press working such as punching, bending and drawing can be produced with high efficiency while saving space.

  In addition, it is possible to ensure good operation consistency between the press machine 10S and the transport device 40 and ideal operation (efficient and smooth operation) of the transport device 40. That is, it is possible to avoid the problem of reversely conveying the processed material back to the previous process side, which causes unnecessary driving energy consumption and mechanical life reduction due to unnecessary rapid acceleration / deceleration and reversing operation of the feed bar 41. There is nothing.

  Moreover, it is easy to implement, simple in structure and easy to handle. That is, it can greatly contribute to the spread of the transfer press machine (10S, 40) employing the servo motor drive type press machine 10S.

  Uncertainty that relies solely on intuition and empirical rules at the manufacturing site, does not require repeated examination of slide motion and transport motion for each change in press operation mode, and forces operators to make very troublesome and careful selection and setting operations There is nothing.

  In the middle ("A") shown in FIG. 1, designated slide trajectory information SLD which is a slide motion (Rs) including a temporary rising period, and designated transport trajectory information TRD which is a corresponding transport motion (Rar1, Rcu1, Rld1). Is selected.

  The slide 15 is continuously positioned at a position Hi corresponding to the process number Ni. Since the process number Ni is large, there is no time delay between the current designated slide position Hi corresponding to the switching input signal and the actual slide position (currently designated slide position) as a result of the elevation drive control. That is, the slide 15 is controlled to move up and down according to the slide motion (curve Rs).

  When the process number N progresses in one direction (left to right in FIG. 1) at a selected constant speed (Ssp), the actual slide position is indicated on the designated slide trajectory information SLD (curve Rs) at any process number Ni. It is equal to the specified slide position Hi.

  Similarly, since the feed bar 41 is continuously positioned at the positions Xi, Yi, Zi corresponding to the process number Ni, the feed bar 41 is transported and controlled according to the transport motion (curves Rar1, Rcu1, Rld1). Since the process number Ni is large, there is a time delay between the current designated conveyance position Xi, Yi, Zi corresponding to the switching input signal and the actual conveyance position (currently designated conveyance position) as a result of the conveyance drive control. Absent.

  Thus, even when a slide motion (curve Rs) having a position ("A") where the position Hi of the slide 15 being lowered toward the bottom dead center temporarily rises is selected, the transport device 40 (41) is moved. Thus, the transport operation can be performed according to the curve (Rar1, Rcu1, Rld1) based on the transport trajectory information TRD. There is no temporary reversal and no temporary interruption. Incidentally, in the case of the conventional crank angle setting method, the conveyance operation in the reverse direction is caused at the location (“A”).

  Therefore, it is possible to completely avoid a situation in which the transport device 40 temporarily reverses and returns to the normal operation again. That is, waste of energy and time can be eliminated and productivity can be improved. In addition, since the control system including the servo motor 30S and the conveying device 40 are not subjected to excessive impact, there is no failure or damage, and maintenance is free.

  When the designated slide trajectory information SLD that is the slide motion (Rstp) including the pause period shown in FIG. 4 and the designated transport trajectory information TRD that is the corresponding transport motion (Rar2, Rcu2, Rld2) are selected. is there.

  This slide motion (curve Rstp) is a continuous movement method indicated by a dotted line in the press machine 10W, and slide 15 within a certain region before a bottom dead center (180 degrees) with respect to a sine wave-shaped slide motion (curve Rcnt). Is a discontinuous movement method in which the slide 15 is lowered to a certain height (position H2) and the slide 15 is lowered again after a certain time (heating time) has elapsed. For example, it is used when a processing prerequisite (material heating) of a certain metal is satisfied, that is, when a difficult-to-process material is pressed with high efficiency.

  Even when the slide position H is temporarily stopped at a certain position H2, each transfer operation of the transfer device 40 is continuously (continuously) executed according to the selected locus (Rar2, Rcu2, Rld2) without interruption or stop. Be made. In addition, in a short period of time excluding the temporary stop period, it is possible to avoid an emergency situation in which the transport operation must be terminated by rapidly accelerating, moving at high speed, or rapidly decelerating a large inertia transport mechanism (feed bar 41, etc.). Can do.

  That is, although the slide 15 is temporarily stopped, the transport operation can be performed reliably and smoothly in a continuous state, and wasteful transport operation and time can be eliminated. Further, mechanical vibration and energy consumption due to unnecessary conveyance stop operation can be eliminated. Furthermore, it is possible to avoid an excessive increase in the speed of the transport device 40 and to avoid an increase in cost of the transport control device 45 and the like.

(Second Embodiment)
The second embodiment has the same basic configuration and function as the first embodiment (FIGS. 1 to 3), but the first inversion position detection means (61, 62) and The second reverse position detection means (61, 62) is provided, and the process progress control means (61, 62) is provided on the condition that each reverse position is detected by each reverse position detection means (61, 62). The process progress start instruction Sst shown in FIG. 3 is automatically output.

  FIG. 5 shows a case where the selected designated slide trajectory information SLD is a slide motion (curve Rhf) and the corresponding designated transport trajectory information TRD is a transport motion (trapezoidal curves Rar3, Rcu3, Rld3).

  That is, while the slide stroke when the crankshaft 12 is rotated once is Hst, the actual slide stroke is half that [= Hst × (1/2)] and the crankshaft 12 is rotated halfway back and forth. Press operation. That is, the forward / reverse rotation operation is performed around the bottom dead center (θ180 = 180 degrees) at a position lower than the top dead center (θ0 = 0 degrees). In other words, the reciprocating rotation (swing) between the first reversal position (≈θ90) and the second reversal position (≈θ270) sandwiching the press working region allows the processing cycle time to be minimized. Realize shortening. Therefore, the processing speed can be further increased.

Here, the first inversion position detecting means (61, 62) of the process number monitoring method has the process number N last when the crankshaft 12 rotates in the direction opposite to the clockwise direction (left rotation). The first inversion position [Nn = N2 ¹³ (≈θ90)] is detected on the condition that the process number is Nn or more (YES in ST40 and ST41 in FIG. 6).

The second reverse position detection means (61, 62) has a process number N that is equal to or greater than the last process number Nn when the crankshaft 12 rotates in the same direction as the clockwise direction (clockwise rotation). On the condition (YES in ST40 and ST41), the second inversion position [Nn = N2 ¹³ (≈θ270)] is detected.

  Thus, the process progress control means (61, 62) automatically outputs the process progress start command Sst on condition that each reversal position (Nn) is detected by each reversal position detection means (YES in ST41). (ST42).

  According to the second embodiment having such a configuration, the process progress start command Sst can be automatically output while detecting the reverse position using the reverse position detection means (61, 62) of the process number monitoring method. The process number Nn can be instantly switched to the first process number N0.

  Then, as shown in FIG. 5, the press operation for reciprocating half rotation of the crankshaft 12 can be performed quickly and accurately, and the slide 15 can be moved up and down in accordance with the slide motion (curve Rhf) (YES in ST10 in FIG. 3). ST11-).

  Thus, according to the second embodiment, one characteristic of the press machine 10S based on the servo motor drive system [because the servo motor 30S can freely rotate in the forward and reverse directions, the crankshaft 12 is not necessarily required for each press processing cycle. Is not required to rotate once (0 to 360 degrees). ], The press operation of the new mode by the reciprocating half-rotation method skillfully utilized can be easily and reliably executed, so that the press speed can be further improved and the handling is further simplified compared to the case of the first embodiment. It is.

  Moreover, since the process number N is advanced from the first process number N0 to Nn at a constant set speed (Ssp) in any half-rotation direction, the transport operation (curve Rar3) is performed based on the designated transport trajectory information TRD. , Rcu3, Rld3).

  Incidentally, in the case of the press machine 10W, since the detection order [angle θ90 (θ270) → angle θ270 (θ90)] is alternately changed for each press processing cycle, an appropriate timing signal cannot be generated and output. That is, the transport device 40 becomes inoperable.

(Third embodiment)
In the third embodiment, the basic configuration and function are the same as those in the case of the second embodiment (FIGS. 1 to 3 and FIG. 5), and the first inversion position detecting means (61, 62) and The second reverse position detection means (61, 62) is formed as a crank angle monitoring system.

  That is, the first reverse position detecting means (61, 62) is formed so as to be able to detect the first reverse position when the crank angle θ is 90 degrees or less (YES in ST45 and ST46 in FIG. 7). Yes. The second reverse position detection means (61, 62) is formed so as to be able to detect the second reverse position when the crank angle θ is 270 degrees or more (NO in ST45, YES in ST47). . The values of the first and second inversion positions (θ) can be changed. The crank angle θ is detected using an output signal (rotation angle equivalent signal θk) of the encoder 12E connected to the crankshaft 12 shown in FIG.

  Further, the process progress control means (61, 62) automatically outputs a process progress start command Sst on the condition that each reversal position (90 degrees, 270 degrees) is detected by each reversal position detection means ( ST48).

  Thus, according to the third embodiment, the same operational effects as in the case of the second embodiment can be obtained, and furthermore, each reversing position detecting means is a system for monitoring two crank angles. The electronic position detection processing load can be reduced.

(Fourth embodiment)
In the fourth embodiment, the basic configuration and function are the same as those in the first (or second or third) embodiment, but the single drive target selection means (65) and the single drive are used. Switching control means (61, 62) is provided, and either one of the slide control and the conveyance control can be selectively driven independently.

  The single drive switching control means is formed from the operation unit 65 shown in FIG. 2, and can select one of slide control and conveyance control as a single drive target. The selected single drive target is temporarily stored in the work area of the RAM 63.

  The single drive switching control means (61, 62) is a currently designated slide position extraction means when the slide control is selected using the single drive target selection means (65) (YES in ST20 of FIG. 8, NO in ST22). (61, 62) and the slide input signal switching control means (61, 62) are switched to the single drive (ST28 to ST32), and the transfer control is selected (YES in ST20, YES in ST22). The currently designated transport position extracting means (61, 62) and the transport input signal switching control means (61, 62) can be switched to single drive (ST23 to ST27).

  Any single drive can be executed when the process progress start command Sst is automatically or manually output ("H") (YES in ST21), and is ended by an operation stop command (YES in ST33). Note that the case where the single drive is not selected (NO in ST20) is the same as the case of FIG. 3 (ST10 to ST19) (ST50).

  Thus, according to the fourth embodiment, it is possible to accurately confirm the state of press working and the quality of the product by trial hitting of the press machine 10S regardless of the transport device 40. Die height adjustment when changing dies can be done easily and safely.

  Moreover, the clamp state and conveyance operation | movement of the novel processing material by the conveying apparatus 40 can be confirmed accurately and safely irrespective of the press machine 10S.

  In the above first to fourth embodiments, the process progress control means, the currently designated slide position extracting means, the slide input signal switching control means, the current designated transport position extracting means, the transport input signal switching control means, etc. Is mainly a software structure (61, 62). However, all or a part of the structure may be implemented as a hardware structure (for example, a profiler circuit, a FIFO buffer, etc.). For example, each part of the slide motion based on the designated slide trajectory information SLD created by the profiler circuit and the transport (transfer) motion based on the designated transport trajectory information TRD is used as FIFO (previous information) as the process number Ni advances. It is only necessary to form the slide ascending / descending and transporting operations in synchronism with the process number N by outputting to the buffer.

  The present invention is a servomotor-driven press machine 10S that can freely rotate forward / reversely and change in speed, and that can reduce, stabilize, or temporarily stop a slide speed, and a conveying device 40 for automatically conveying a processing material. Can greatly contribute to the spread of transfer press machines.

It is a schematic diagram for demonstrating the whole structure which concerns on the 1st Embodiment of this invention. Similarly, it is a block diagram for mainly explaining an operation control device (computer). Similarly, it is a flow chart for explaining slide up-and-down operation and three-dimensional conveyance operation. Similarly, it is a timing chart for explaining Example 1 (a slide motion including a temporary stop and a three-dimensional transport motion). Similarly, it is a timing chart for explaining Example 2 (a slide motion including a reversing operation and a three-dimensional conveyance motion). It is a flowchart for demonstrating the inversion position detection operation | movement of the process number monitoring system which concerns on the 2nd Embodiment of this invention. It is a flowchart for demonstrating the inversion position detection operation | movement of the crank angle monitoring system which concerns on the 3rd Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the single drive which concerns on the 4th Embodiment of this invention is selected. It is a figure for demonstrating the press machine 10W of a stored energy drive system. It is a figure for demonstrating the press machine 10S of a servomotor drive system. It is a figure for demonstrating conveyance (transfer) operation | movement. It is a figure for demonstrating the conventional cranking angle for conveyance operations. It is a figure for demonstrating the conventional problem 1 at the time of employ | adopting an allocation crank angle. It is a figure for demonstrating the conventional problem 2 at the time of employ | adopting an allocation crank angle.

Explanation of symbols

10S press machine (transfer press machine)
11 Body 12 Crankshaft 12E Encoder 15 Slide 30S Servo motor (Slide lift motor)
30E Encoder 37 Slide control device 40 Conveyance device (transfer press machine)
41 Feed bar (conveying member)
45 Conveyance control device 46 Servo motor (conveyance motor)
47 Encoder 60 Computer (Operation control device)
61 CPU (process progress control means, current designated slide position extraction means, slide input signal switching control means, current designated conveyance position extraction means, conveyance input signal switching control means, first inversion position detection means, second inversion Position detection means, single drive switching control means)
62 ROM (process progress control means, current designated slide position extracting means, slide input signal switching control means, current designated transport position extracting means, transport input signal switching control means, first inversion position detecting means, second inversion Position detection means, single drive switching control means)
64M designation information storage means 65 operation unit (single drive target selection means)
N Process number SLD Designated slide track information TRD Designated transport track information

Claims (4)

While the slide controller drives the slide lift motor, the slide is controlled to move up and down to a position corresponding to the input target slide position signal, and the transport controller drives the transport motor and the target transport is input. A transfer press operation method in which conveyance control is performed to a position corresponding to the position signal, and a predetermined pressing process is performed on the conveyed processing material,
The specified slide trajectory information whose horizontal axis is the process number and the vertical axis is the specified slide position and the specified transport trajectory information which is the specified transport position are stored.
Based on the process progress start command, the process number is advanced at a constant speed in one direction from the first process number to the last process number,
With reference to the designated slide trajectory information, the current designated slide position corresponding to the current process number read in progress is extracted and the target slide position signal is switched to the signal corresponding to the extracted current designated slide position,
With reference to the designated conveyance path information, a current designated conveyance position corresponding to the read current process number is extracted, and the target conveyance position signal is switched to a signal corresponding to the extracted current designated conveyance position,
Based on the process progress start command issued again after reaching the last process number, the process number is made to advance again at a constant speed in one direction from the first process number to the last process number, and the current process number is read from the target. A transfer press operation method characterized by repeatedly executing the slide position signal and the target conveyance position signal. The slide controller can drive the slide lift motor and control the lift to a position corresponding to the target slide position signal to which the slide has been input, and the transport controller can drive the transport motor and input the transport member. In a transfer press machine that can be controlled to be transported to a position corresponding to a target transport position signal and can perform predetermined pressing on the transported processing material.
Designated information storage means capable of storing designated slide trajectory information in which the horizontal axis is the process number and the vertical axis is the designated slide position and the designated transport locus information which is the designated transport position, and the last from the first process number based on the process progress start command And a process progress control means for proceeding the process up to the process number at a constant speed,
With reference to the stored designated slide trajectory information, a currently designated slide position extracting means for extracting a currently designated slide position corresponding to the current process number read during the progress, and a target slide position signal input to the slide control device A slide input signal switching control means for switching to a signal corresponding to the extracted current designated slide position;
With reference to the stored designated conveyance path information, a currently designated conveyance position extracting means for extracting a currently designated conveyance position corresponding to the current process number read during the progress, and a target conveyance position signal input to the conveyance control device A transfer input signal switching control means for switching to a signal corresponding to the extracted current designated transfer position; and
The process progress control means, the currently designated slide position extracting means, the slide input signal switching control means, the current designated transport position extracting means and the transport input signal switching control means are formed so that they can be repeatedly executed every time a process progress start command is issued. Transfer press machine.   The reversing movement of the slide lifting motor is formed so as to be converted to the vertical movement of the slide via a crank mechanism, and one reversing position detecting means for detecting one reversing position across the press working region and the other reversing position are detected. And the other inversion position detecting means is provided so that the process progress control means can automatically output the process progress start command on condition that each inversion position is detected by each inversion position detecting means. The transfer press machine according to claim 2.   Single drive target selection means for selecting one of slide control and conveyance control as a single drive target, and when the slide control is selected using this single drive target selection means, the current designated slide position extraction means and slide An input signal switching control means is switched so that it can be driven independently, and a single drive switching control means for switching the current designated transport position extracting means and the transport input signal switching control means so that they can be driven independently when the transport control is selected. A transfer press machine according to claim 2 or claim 3.

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