JPH01150499A - Punch press machine - Google Patents

Abstract

PURPOSE:To easily enable marking on a plate stock by outputting the speed command of a marking speed pattern to a hydraulic circuit via a control part from a marking speed pattern storing part and controlling a hydraulic cylinder. CONSTITUTION:The marking speed pattern corresponding to the variation of the various materials and plate stock in a plate stock W are stored in a marking speed pattern storing part 47. The marking can easily be executed by giving a command to a servocontrol part 45 via a Z axis command part 41 from a main control 37 on the selected marking speed pattern. The length adjustment in a marking die thus becomes unnecessary even if the plate thickness is varied and the work efficiency in marking can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial Field of Application) The present invention relates to a punch press machine capable of stamping a plate material.

(Prior Art) Conventionally, a punch press machine such as a turret punch press machine punches a plate material by reciprocating one of the upper die and the lower die. The reciprocating motion of either the upper mold or the lower mold is performed via a ram. The reciprocating motion of the ram was performed at high speed by a mechanical drive device such as a crank drive.

(Problems to be Solved by the Invention) By the way, when punching is performed at high speed using a mechanical drive device, extremely large vibrations or noises are generated during punching, which is a problem in terms of environmental regulations. In order to suppress the large-scale imaging and noise, it is necessary to attach a large-scale vibration isolating device.

In addition, punch press machines with mechanical drive devices,
Conventionally, it was not possible to engrave plate materials.

Therefore, recent efforts have been made to develop punch press machines that use a hydraulic system to perform high-speed processing and suppress noise.

In order to improve the above-mentioned problems, the present invention provides a punch press machine that uses a hydraulic type punch press machine to easily perform stamping on plate materials, which could not be done with conventional mechanical type punch press machines. It is in.

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the present invention provides a stamping die consisting of an upper die and a lower die for stamping a plate material, and the stamping die. A reciprocating ram that allows one side of the mold to reciprocate, a hydraulic cylinder provided on the ram, a hydraulic circuit that controls the hydraulic cylinder, a control section that gives control commands to the hydraulic circuit, and a control section for the control section. The punch press machine comprises a stamping speed pattern storage unit connected to provide a stamping speed pattern command to the ram.

(Function) By employing the punch press machine of the present invention, a speed command of the stamping speed pattern is issued from the stamping speed pattern storage section to the hydraulic circuit via the control section to control the hydraulic cylinder. Based on the control of the hydraulic cylinder, the reciprocating speed of one of the stamping molds, for example, the upper mold, is controlled via the ram, so that the plate material can be easily stamped.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Referring to FIG. 3, a turret punch press machine 1 as a punch press machine has a frame 3, and upper and lower inside of the frame 3 are an upper turret 1 that rotates around a vertical axis (Z axis). A lower turret is arranged at a predetermined interval. A large number of punches are attached to the plane (XY) position of the upper turret, and a number of dies are attached to the plane of the lower turret, facing the punches.

A cylinder device 5 equipped with a reciprocating ram is provided above the frame 3. A ram is positioned above the upper turret and presses a punch located below it toward the die. A Y-axis guide rail 7 is provided on the side surface of the frame 3. The Y-axis guide rail 7 is provided with a moving member guided in the Y-axis direction by a Y-axis servo motor, and a work table 9 equipped with a free bearing is fixed to the upper surface of the moving member.

A carriage 11 is provided at the Y-axis end of the work table 9 and is movable in the X-axis direction by an X-axis servo motor. The carriage 11 is provided with a plate clamping device that grips the plate W placed on the work table 9 and guides the plate W within the XY plane.

The turret punch press machine 1 having such a configuration guides the carriage 11 in the XY plane by the NC device 13 attached to the frame 3, and also drives the cylinder device 5 appropriately to form a predetermined hole in a predetermined position of the plate material W. Ming can perform processing.

FIG. 1 is a block diagram of a control system showing an overview of the NC device 13 and showing the main components of the cylinder device 5 and its hydraulic circuit.

In FIG. 1, the cylinder device 5 has a piston 5B inside the cylinder 5A, and the piston 5B has upper and lower (
A movable ram 5C extending in the downward direction of the Z-axis is integrated.

Below the ram 5C, a plurality of upper mold guides 17 are attached to the circumferential portion of the upper turret 15, each upper mold 19 is provided on the upper mold guide 17, and each upper mold 19 is provided with a plurality of upper mold guides 17. An upper die 19A of the stamping die is provided.

A lower turret 21 is provided below the upper turret 15, and a plurality of lower molds 23 are provided on the circumference of the lower turret 21 at positions corresponding to the upper mold 19. A lower die 23A of the stamping die corresponding to the upper die of the stamping die 19 is provided.

A plate material W is placed on the lower die 23A, and a plate material clamp device 25 for gripping the plate material W is provided on the side of the plate material W. The lower surface of the upper mold 19A of the stamping mold is formed with, for example, a base number 2, and the upper surface of the lower mold 23A is a blind plate. A pulse encoder 27 is attached to the lower surface of the cylinder 5A, which brings the rolling wheels into contact with the ram 5C and detects the movement of the ram 5C using a pulse signal PS.

The hydraulic circuit 29 includes a hydraulic pump OP and the cylinder 5A.
Upper cylinder chamber, lower cylinder chamber and piping OL+,
It is configured to include a servo 31 connected via OL2. The pipe OL+ is provided with a pressure detector 33 that detects the oil pressure of the pipe 01+ using an electrical signal.

The NCI device 3 includes an NC data input section 35 and a main control section 37.
, an XY wheel axle command 39, a two-axis command section 41, a position detection section 43, a servo valve control section 45, and a marking machining speed pattern storage section 47.

The NC data input unit 35 is connected offline or online with, for example, CAD and CAM, and the CAD and C
AM to N for control in turret punch press machine 1
The receiver receives the C data and sends this NC data to the main control unit 37.
is provided to.

A marking processing speed pattern storage section 47 connected to the main control section 37 stores various marking processing speed patterns corresponding to the material and thickness of the plate material W.

The main control unit 37 is operated by an operating system,
It receives NC data from the NG data input section 35 and mainly controls the position of the plate material W and the drive of the cylinder device @5. Further, the main control section 37 includes various sensors and a limit switch.

It is connected to various other actuators and controls the turret punch press machine 1 overall.

The XY wheel axle command 39 receives predetermined position control data from the main control section 37 and controls the positioning of the plate material W within the XY plane by driving the servo motors for the X and Y axes. There is.

The Z-axis command unit 41 receives Z-axis command data from the main control unit 37 and sets a position Zn for driving the servo valve.

Output data of speed ■n.

The position detection section 43 integrates the pulse signal PS output from the pulse encoder 27 and detects the current position Z of the ram 5C. The pulse encoder 27 is of a type that outputs two-phase pulse signals having a phase difference of 1/4, and the position detection unit 43 detects the ram 5C based on the two-phase pulse signals PS.
You can also know the direction of movement.

The servo valve control section 45 receives position data Zn and speed data Vn from the two-axis command section 41, and also receives the current position Z of the ram 5C from the position detection section 43. Based on these input values, the servo valve control section 45 controls the servo valve 31 to a predetermined position and to a predetermined opening degree.

The marking processing speed pattern storage section 47 includes, for example, a second
As shown in the figure, the stamp processing speed pattern is stored.

In FIG. 2, the horizontal axis represents time, and the vertical axis represents the tip position of the ram 5C, and a curve V, which is an example of a stamping speed pattern, is shown. The ram position Z1 indicates the rising end position of the ram 5C, and the ram 5C is at the ram position @z which is the rising end position.
1, the ram is accelerated downward at an acceleration α1, and reaches point V1 at the ram position Z2 at time T1. Ram 5C is point ■1
When reaching , the ram is decelerated to an acceleration α2 (α2<α1) and reaches a point v2 at the ram position @Z3 at a time T2. That is, the position of point V2 is called a contact point, and indicates the position where the lower surface of the upper mold guide 17 abuts the upper surface of the plate material W placed on the lower mold 23A.

Furthermore, when reaching point v2, the ram 5C has an acceleration α3
The ram is decelerated to (α3 × α2) and lowered to point 3 at ram position z4 at time T3. In other words, the plate material W is in a state of being stamped by the upper mold 19A before moving from point 2 to point V3.

Next, from time T3 to time T4, the upper mold 19A and the lower mold 23 are held on the plate material W by maintaining the ram position Z4 and applying a pressing force to the upper mold 19Δ.
The stamping process is performed by the operation of the stamping die consisting of A.

The marking process is performed at point V4, and the ram 5C from time T4 to time T5 is accelerated at an acceleration α4 (α4>α2), moves upward, and returns to the rising end position of the ram position Z1.

In addition, the plate thickness d of the plate material W is at the ram position Z4 in FIG.
This indicates that the state is approximately equal to the positional length from to ram position Z3.

Therefore, if the thickness d of the plate W to be engraved changes, the length from ram position Z3 to ram position Z4 must necessarily be changed, and the slope of acceleration α3 depends on the change in plate thickness d and the material. It can be adjusted as appropriate.

Incidentally, from point 3 to point V4, the position of the ram position z4 is substantially changed by only a small amount, for example, about 0.2 mm.

In this way, the stamping speed pattern storage section 47 stores stamping speed patterns corresponding to various materials of the plate material W and changes in the plate material, and allows specifying the material and thickness of the plate material to be stamped. Accordingly, it is possible to appropriately select a marking machining speed pattern suitable for the plate material W.

By giving a command to the servo control section 45 from the main control section 37 via the Z-axis command section 41 regarding the selected marking processing speed pattern, marking processing can be easily carried out.

Conventionally, when stamping a plate material W, it was necessary to adjust the length of the stamping die according to the thickness of the plate.
According to this invention, even if the plate thickness changes, there is no need to adjust the length of the stamping die, and the working efficiency of stamping processing is improved. Furthermore, marking can be performed in response to changes in plate thickness during unmanned operation.

Note that the present invention is not limited to the embodiments described above, and can be implemented in other embodiments by making appropriate changes.

[Effects of the Invention] As understood from the description of the embodiments above, according to the present invention, since the configuration is as described in the claims, the control unit can be controlled from the stamping speed pattern storage unit. A speed command for the marking machining speed pattern is sent to the hydraulic circuit via the hydraulic circuit to control the hydraulic cylinder. The reciprocating speed of one of the stamping molds is controlled via the ram based on the control of the hydraulic cylinder, so that stamping can be easily carried out in accordance with various materials and changes in plate thickness.

Moreover, even if there are changes in various materials and plate thicknesses, there is no need to adjust the length of the stamping die, improving the work efficiency of stamping.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a control system showing an overview of the NO device, which is the main part of the present invention, and also showing an overview of the cylinder device and its hydraulic circuit. FIG. 2 shows an example of the marking processing speed pattern stored in the marking processing speed pattern storage section. FIG. 3 is a perspective view of a turret punch press machine according to an embodiment of the present invention. 1... Turret punch press machine 5... Cylinder device 13... NG device 19A.
... Upper die 23A of the stamping die... Lower die 29 of the stamping die... Hydraulic circuit 37... Main control section 47.
...Patent attorney Yasuo Miyoshi, representative of the engraving processing speed pattern storage department

Claims (1)

[Claims] An engraving die consisting of an upper die and a lower die for engraving a plate material, a reciprocating ram that allows one of the engraving dies to reciprocate, a hydraulic cylinder installed in the ram, and the hydraulic pressure. A hydraulic circuit for controlling a cylinder, a control section for giving a control command to the hydraulic circuit, and a stamping speed pattern storage section connected to the control section for giving a command for a stamping speed pattern to the ram. A punch press machine that is characterized by the ability to