JPS63188431A - Turret punch press - Google Patents

Abstract

PURPOSE:To prevent the generation of a defective product due to the die fitted by mistake and the breakdown of a die and machine by starting a work after identifying a changed die as to whether normal or not by a die recognizing device. CONSTITUTION:The station number and die number inputted into a NC program input part C1 is compared at a comparison part C3 with the currently fitted die list inputted into a die list memory part C2 prior to starting work. In the case of fitting no specified die a specified die fitting is commanded by the command of a command part C4. On performing of the fitting an automatic identification is performed by a die identifying device and a work command is placed by a die fitting confirming part C6 when it is identified as a normal one. Consequently no defective product is caused with an erroneous die and the breakdown of die and machine can be prevented.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) This invention relates to a turret punch press.

(Prior Art) For example, in a turret punch press, designation of a mold on an NC program is performed not by designating the mold itself but by designating the station number of the turret to which the mold is attached. Therefore, at the beginning of processing, it is necessary to confirm that a predetermined mold is attached to a predetermined station. Conventionally, this confirmation work was performed exclusively manually.

(Problem to be solved by the invention) However, when performing mold confirmation work as described above, due to the fact that the ceiling of the frame is close to directly above the turret, it is necessary to take a fairly careless posture. However, since the turret has a large number of stations, it takes a lot of work time.

Furthermore, in the mold mounted on the turret, there are a plurality of dies for one punch due to differences in clearance, but it is difficult to visually distinguish these differences in clearance.

Furthermore, punches and dies come in various shapes, and punches and dies must be installed at a predetermined angle to the upper and lower turrets; There was a risk that the confirmation of whether the mounting angle of the die attached to the mold was correct would be incomplete due to the difference in the visual posture of the two molds.

Therefore, an object of the present invention is to provide a turret punch press that can automatically check whether or not a predetermined mold is attached to the turret and perform punching work with a regular mold attached to the turret. purpose.

[114 features of the invention] (Means for solving the problem) In order to achieve the above object, this invention has the m
As shown in u, turret punch press, turret
To the mold mounting part of the station, the number T of the mold to be picked up (44) in correspondence with the station number S, No.
an NC program manual section C1 that inputs a one-C program PRG in which No. is written; a mold list storage section C2 that stores a list of molds currently attached to each station of the turret; Comparison section C3 compares the station numbers S and NO and the mold numbers T and No written in the NG program P RG, and the comparison section shows that the specified mold is not attached to the station to be used for processing. When a predetermined mold is to be installed at the station, the number of molds 4 = J command section C4 outputs a command, and all mold installation numbers are executed according to the commands of the command section C4. after the mold has been installed at the station, a mold identification device automatically identifies whether or not a predetermined mold has been installed at the station, updates the mold list to a regular one, and outputs a machining command to the machining means C5. The mold confirmation section C6 was configured.

(Operation) In this invention, the station numbers S, No. and mold numbers "r, No." written in the NG program PRG are compared with the list of molds currently attached to the turret station, and a predetermined A mold identification device confirms whether the mold is attached or not, and then processing begins.

(Example) Hereinafter, an example of the present invention will be described using an example in which a mold identification device using an optical fiber is used.

FIG. 2 is an overall view of a turret punch press according to an embodiment of the present invention.

As illustrated, the turret punch press 1 has an upper turret 3 and a lower turret 5. The upper turret 3 includes a plurality of punch mounting portions (punch stations) on the circumference to which a plurality of upper molds (punch) can be mounted. Further, the lower turret 5 includes a plurality of die mounting portions (die stages) to which dies used as a pair with the punch can be attached to the upper turret.

The upper turret 3 and the lower turret 5 are rotated synchronously to provide punches and dies for processing to a processing section (pan center) located on the right side of the figure.

A striker 7 is provided above the processing section. The striker 7 is quickly lowered at a predetermined timing, and by pressing the head of the punch, a predetermined hole punching process is performed between the punch and the die at a predetermined position on a workpiece (not shown). It is something that is given.

A clamp device 9 located to the right of the turrets 3 and 5 grips one end of a plate-shaped workpiece (not shown) and positions the workpiece at a predetermined position in the processing section. For this purpose, the clamping device 9 is fixed to a ridge 11 moving in the XY plane, and the clamping device 9 is fixed to a ridge 11 that moves in the
The ridge 11 is connected to the turret punch press 1
It is designed to be driven by a C device δ13.

The NC device 13 includes each means 01 to C5 shown in the WSi2 diagram.
After confirming the metal as described later, when the carriage 11 is driven and controlled via the X@ and Y-axis drive servo motors (not shown), a predetermined mark is added to The rotation of turrets 3 and 5 is controlled so that the mold comes.

The operation surface of NCHi+''713 is equipped with a plurality of key devices 15 for inputting various commands and data, and a CRT capable of displaying the contents of the list.
17 are set up.

The station number S written in the NO program PRG, No. and the mold number corresponding to the station, NO.
corresponds to the station number common to the upper and lower turrets 3.5, and indicates the punch number and die number.

In addition, if there is a specified mounting angle for these punches and dies, the angle will also be described.

The mold list corresponds to the station numbers S and No. common to the upper and lower turrets 3.5, and describes the mold numbers and mounting angles of the currently installed punches and dies for each station.

On the other hand, the tallest van f-press 1 shown in this example is provided with a mold identification device 21 that allows the detecting section 19 to be seen in the processing section.

FIG. 3 is a detailed view of the mold identification [7] showing the mold identification device 21 in an enlarged manner together with the turret 3.5 equipped with punches and dies.

The mold identification device 21 is suspended from the upper frame of the turret punch press 1, and extends in an arc along the outer circumference of the turret 3°5 from the processing section to the mold mounting section (positive 1^1 in Fig. 1). It is supported by guide rails 23 arranged therein.

A rack 25 is provided on one side of the guide rail 23 in the longitudinal direction, and two arcs of a movable body 27 movable along the guide rail 23 are engaged with the rack 25. The binion 29 is driven by a motor (not shown), and by rotating the two binions, the movable body 27 can be moved from the processing section to the mold mounting section. For this reason, a plurality of rollers 31 are appropriately installed between the guide rail 23 and the arc moving body 27.

The two-arc moving body 27 is provided with an elevating member 33 that can be moved up and down by driving the heptad M1.

A slide guide 35 having a cover 37 is provided on the lower surface of the elevating part 33.

A horizontal moving body 39 is provided on the slide guide 35 so as to be movable along the longitudinal direction.

The horizontal moving body 39 is equipped with a motor M2. The motor M2 is connected to a pinion 41 that meshes with the rack 37, and by rotationally driving the pinion 41, it is possible to move the horizontal moving body 39 in the radial direction of the turret 3.5.

A pulse motor M3 having a ball screw 43 inserted therethrough is provided on the base plate 39a of the horizontal moving body 39.
By rotating the ball screw 3.3, the ball screw 43 can be moved in the radial direction of the turret 3.5.

The detection section 19 is provided on the turret side of the ball screw 43.
is installed.

The detecting section 19 is configured to have a thickness of 1.5 to 2 CI1+1 so that it can be inserted into the gap 0 between the two turrets 3 and 5.

Note that FIG. 3 shows a state in which the punch 47 is attached to the upper turret 3 and the die 49 is attached to the lower turret 5.

FIG. 4 is an enlarged front view of the water 1V moving body 39 and the detecting section 19, and FIG. 4 is a plan view of the horizontal moving body 39 and the detecting section 19.

A side plate 51 is fixed to the base plate 39a, and rails 53 are attached above and below the side plate 51 toward the turret side. Through holes 55 are formed above and below between the rails.

The inside of the through hole 55 is guided by the rail 53).
A fiber support 57 is guided by the rail 53 at the tip of the ball screw 43.

On the turret-side surface of the fiber support 57, a tip portion 61 of a fiber group 59 is fixed, the end surface of which is distributed toward the end surfaces of the punch 47 and the die 49.

As the model of the fiber group 59 is shown in FIG.
Three fiber rows 59a each above and below the reinforcing cloth 63
, 59b, 59c, 59d, 59e, and 59r. Each fiber row is 50μ~0.111f
i! It consists of optical fibers arranged in an orderly manner.

In this example, the optical fibers in adjacent rows are arranged in a staggered arrangement. Optical fiber 5 located in the center row
9b and 59-e are fiber arrays for receiving light on the punch and die sides, and the others are fiber arrays for transmitting light on the punch and die sides.

Among the fiber groups, a laser beam [65 is provided at the other end of the fiber array for light projection. Each fiber row 5 for light reception
At the other ends of 9b and 59e, a camera shown in figure m7 is arranged.

In the mold identification device having the above configuration, the detection unit 19 can freely move forward and backward in the direction of the turret 3 with respect to the board 39a by appropriately sending a command signal to the pulse motor M3.
．． Detailed in units of 11111 or less! /1111 is possible.

In addition, with the detection rA19 pulled out to the outside of the turret 3.5, the elevating member 33 is raised to the upper limit, and the arc moving body 27
By moving the detection part 19 around the turret 3.5, the detection part 19 can be moved to either the processing part or the mold attachment part.

Therefore, from the state in which the detection unit 19 is placed, for example, in the processing area, and the tip end 61 of the fiber ar 59 is positioned at the outer circumferential position of each mold 47, 49 shown in FIG.
By operating according to the following steps (1) to (2), it is possible to image the shapes of the punch 47 and die 49 attached to a predetermined stay and John.

■ In FIG. 6, the light source 65 is turned on.

(2) In FIGS. 4 and 5, the tip 61 of the fiber group 59 is pushed toward the turret by the pulse motor M3.

■ Then, the light emitting fiber array 59a shown in FIG.
, 590, 59d, and 59f emit laser beams directly above and below, and the reflected beams of these laser beams are returned to the light receiving fiber arrays 59b and 59e.

(2) Therefore, by performing the processing shown in FIG.
7 and die 49 are obtained.

(2) The processes (2) and (2) are performed at predetermined stations as the turret rotates.

FIG. 7 is a block diagram of the signal processing circuit of the mold identification device.

As shown in the figure, the processing circuit includes an am command unit 69, a synchronization signal generation circuit 71, and a power supply circuit 73 for the light source 65, which are connected to the am command unit 69.

The power supply circuit 73 turns on the light gi 65, causes the light emitting fiber arrays 59a, 590, 59d, and 59t to output a predetermined amount of laser light, and causes the tip portion 61 to continuously emit parallel light rays toward the upper and lower surfaces. .

The synchronization signal generation circuit 71 has an internal clock and has an internal clock of 1 m.
A synchronization signal SS of a predetermined period is output in units of sec to 10 m5 ec.

A scan circuit 73a, a pulse motor drive circuit 75, and a display drive circuit 91 are connected to the synchronization signal generation circuit 71.

The pulse motor drive circuit 75 is connected to the pulse motor M3, receives the synchronization signal SS, and moves the fiber support 57 toward the inside of the turret at a predetermined pitch of about 0.05 to o, im+u. .

On the other hand, the scan circuit 73a is connected to a camera 79 equipped with a linear CCU 77. C0D77 connects the detection end 67 of the light receiving fiber array 59b (59e) to J
It is arranged at a predetermined distance 4r from the detection end 67 so as to have an image a.

The camera 79 images the amount of light output from each optical fiber of the detection end 67 arranged on the - straight line at a predetermined timing based on the signal SS.

For instantaneous imaging, a light receiving tube is placed on the linear C0D77.
A direction perpendicular to the traveling direction of the fiber support 57 toward the end face of the mold (bump and die) and the mold holder surface corresponding to the current position of the fiber rows 59b and 59c (hereinafter, this line direction is referred to as the α direction). A linear image on the upper surface (referred to as 1) is obtained, and this increase is output as a signal S1, as shown in FIG. 8(a). The signal @S+ is a voltage signal that has a low potential portion between the mold (punch or die) and the mold holder. The low potential part reflected less laser light, that is,
This means a hollow part or an inclined part of a mold.

A differentiation circuit 81 is connected to the seven cameras.

The differentiation circuit 81 differentiates the signal S+ on the α axis, emphasizes the slope at both ends of the low potential portion, and outputs a differential signal S2, as shown in FIG. 8(b).

A discrimination circuit 83 is connected to the differentiating circuit 81, and the circuit 83
Contour enhancement 913 L! One circuit 85 is connected. As shown in FIG. 8(b), the discrimination circuit 83 has a positive (
Comparison potential Vt h 1 with two levels on the +) and (-) sides
, Vlh2 is 1, and both potentials V thl and V t
At t)2, the differential 7h position S2 is compared, and the intersection α1. α2
．． Detect α1 and α4. The contour enhancement processing unit 85 processes the detected position α1. α2. α3. α4 is emphasized by performing line differentiation processing.

A σ calculation circuit 87 and a window processing circuit 89 are connected to the contour processing section 85 . The arithmetic circuit 87 includes
The mold identification part 87a and the display drive circuit 91 connected to the CF<T 17 are connected. The display drive circuit 91 is connected to the window processing circuit 89 and the synchronization signal generation circuit 71.

The arithmetic circuit 87 calculates the position α1. α2. α3. α4 corresponds to the α axis and the moving direction of the fiber support 57, and the binary value α2 on the center side. Calculate the mold shape and mounting posture to the turrets 3 and 5 from α3. The function of the gold plate 11 identification portion 87a will be explained in the section of the overall function of the turret punch press 1.

The window processing unit 89 performs window processing.
It performs coordinate enlargement processing.

The display drive circuit 91 adds the detection calculation signal α2. of the calculation circuit 87 to the synchronization signal SS. α3 is input, coordinate processing is performed on this, and the end face shape of the mold is displayed on the CRT 17.

FIG. 9 shows an example of display on the CRT 17.

In FIG. 9, the two vertical columns on the left are a diagram showing the shape of the end face of the bump 47 at the top, and a diagram showing the shape of the end face of the die 49 at the bottom.

FIG. 9 is a diagram showing the end surfaces of both molds at the same time.

The left diagram in FIG. 9 is a diagram obtained by applying window processing to the central diagram.

Each means C1 to C5 and mold identification device 21 shown in FIG.
The overall operation of the turret punch press 1 is as follows.

First, the NC program R is sent to the NC device 13 shown in FIG.
When RG is sent by, for example, an NC tape, the NC device 13 determines the station number S used for processing from the command part of this NC tape.

Read the No. and the number-r of the bevel mold (bump and die) attached to the station controller in correspondence with each other.

Save this information as 1 gram information.

Here, the comparison section C3 shown in FIG. Regarding No., all model numbers are T', N.
o extracts the mismatched part, and from all molds A-1 command section C4, the mismatched station numbers S and NO and the corresponding f
JG Correspond to the mold number T and No., then CR
Display on T17.

Alternatively, a mold exchange command is output to an ATCO pot (not shown).

The Aberator or ATC robot appropriately replaces the mold according to this mold replacement command.

Next, the mold replaced in this way is identified by the mold identification device 21'C.

The identification is made by the signal processing circuit shown in Figure 7, and the mounting mold is 1G! According to the imaged shape, the mold identification section 8
7a identifies whether or not the mold is a regular mold.

In the identification process, mold data is associated with each mold, a mold number for a mold of a predetermined shape is determined, and it is confirmed that the determined number matches the designated mold.

Through the above processing, the program information and the actual turret 3
, 5 matches the mold installed in turret 3.5, the list written in the mold list storage section C2 is rewritten to the regular one, and the current list of turret 3.5 matches the one shown in the figure. It will be done. Then, the processing means C5 is activated based on the confirmation completion signal from the mounting mold confirmation section C6, and punching is started.

In the above explanation of the overall operation of the turret bounce brace 1, we did not recognize the mold taking position. However, in an actual turret punch press, the number of molds for the turrets 3 and 5 (= Since this becomes a problem, it is possible to normalize the mold orientation by incorporating information on the mold orientation (mounting angle) into the program information and mold list.

The mold replacement command includes mold removal and addition.

As a result of the above, in this example, the mold after replacement is
1, it is identified whether it is genuine or not, and then the processing Ui! This prevents punching caused by incorrectly installed mold 1, resulting in defective products or
No damage to molds or machines.

In the embodiment shown below, a mold identification device! 121 is shown using an optical fiber as an example, the mold identification device is not limited to this, but may be of the type that irradiates the end face of the mold with a scanning laser "light through a prism, etc.6. A camera or the like may be used to view the top surface from the scrap outlet of the mold and convey an image of the end surface shapes of both molds.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate design changes.

[Effects of the Invention] As described above, according to the turret punch press according to the present invention, processing is started after the replaced mold is identified by the mold recognition device, so there is no possibility of failure due to incorrectly installed molds. It does not produce non-defective products or damage molds or machines.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the approximate numbers of this invention, Fig. 2 and the following show examples, Fig. 2 is a front view of the turret punch press, and Fig. 3
The figure is a 1m view showing the details of the mold identification device, Figure 4 is a front sectional view without enlarging the detection part of the mold identification device, and Figure 5 is a flat RFJ diagram of the moving body and detection part. FIG. 6 is an explanatory diagram showing a model of a fiber group, FIG. 7 is a block diagram of a signal processing circuit, FIG. is an explanatory diagram of a display example. C1...NC program containing horn part C2...Mold list storage part C3...Comparison part C4...Mold installation command part C5...Processing means C6...Mounting mold confirmation part 17. ...CRT 19...detection section 21...mold identification Vt position 23...arc moving body 33...Vt ridge (5ri 39...horizontal moving body 43...ball screw 59 ...Fiber group 598 to 59f...Fiber row 61...Optical fiber tip 67...Optical fiber detection end M3...Pulse motor representative Patent attorney Yasuo Miyoshi Figure 8 (a) ) Figure 8 (b) Figure 9

Claims (2)

[Claims] (1) An NC program input section for inputting an NC program in which the number of the mold to be attached to the station corresponds to the station number of the mold attachment section of the turret, and the number of the mold currently attached to each station of the turret. a mold list storage unit that stores a list of molds that are currently in operation; a comparison unit that compares the list with station numbers and mold numbers written in the NC program; a mold installation command unit that outputs a mold installation command to the effect that a specified mold should be installed at the station when the specified mold is not installed at the station; and the mold installation is performed according to the command from the command unit. an installed mold confirmation unit that automatically identifies whether or not a predetermined mold has been installed at the station using a mold identification device, updates the mold list to a regular one, and outputs a processing command to a processing means; A turret punch press characterized by being equipped with. (2) The turret punch press according to claim 1, wherein the die confirmation section also confirms the mounting angles of punches and dies attached to the upper and lower turrets.