JP5013807B2 - Punch, die, press method, press machine processing program creation device and press machine processing program - Google Patents

Description

  The present invention relates to a punch, die, press method, press machine processing program creation device for punching a workpiece continuously along a planned cutting line, and cutting the workpiece into a molded product of a predetermined shape, and The present invention relates to a processing program for a press machine.

  A nibbling process (an overtaking process) is known in which a punching portion is partially overlapped by a press machine while the workpiece is moved and punched continuously, and the workpiece is cut into a molded product having a predetermined shape. For example, a punching method of a conventional press machine includes a first punching process in which punching is performed with a punch and a die slightly shifted from the final shape of a molded product, and a final shape after the first punching process. And a second punching process in which a punching process is performed with a punch and a die (see, for example, Patent Document 1). In such a conventional punching method of a press machine, since the outer side of the final shape is cut by the first punching process, the punching load is reduced when cutting by the second punching process. Shapes larger than machine capabilities can be punched out.

  FIG. 14 is an external view schematically showing a conventional punch, FIG. 14 (A) is a front view, and FIG. 14 (B) is a bottom view. FIG. 15 is an external view schematically showing a conventional die, FIG. 15 (A) is a front view, and FIG. 15 (B) is a plan view. FIG. 16 is a cross-sectional view schematically showing a conventional nibbling operation by a punch and die. FIG. 17 is a plan view schematically showing a conventional nibbling process using a punch and a die, FIG. 17 (A) is a plan view when a straight part is nibbled, and FIG. 17 (B) is a curved line. It is a top view when carrying out the nibbling process of the part.

The punch 101 shown in FIG. 14 is a male die for punching with a cutting edge portion 101a having a circular cutting edge shape and a small outer diameter. A die 102 shown in FIG. 15 is a female die for punching in which the cutting edge portion 102a has a circular cutting edge shape and a small inner diameter. In the nibbling process, as shown in FIG. 17, the workpiece W is continuously fed by the feed amounts Δ ₁₀ and Δ ₂₀ , and the punch 101 and the die 102 are used to cut the workpiece W along the planned cutting line L as shown in FIG. Punch continuously. As a result, the straight line portion L ₁ shown in FIG. 17A or the curved portion L ₂ shown in FIG. 17B is sheared, and the workpiece W is punched into a molded product W ₁ having a predetermined final shape. Scrap (waste) W ₂ is discharged.

Japanese Patent Laid-Open No. 2001-79621

In such a punching process of a conventional press machine, the scraps may not be pulled down below the die 102 and may rise up on the surface of the workpiece W. When such a haze occurs, punching is performed with the scrap W ₂ riding on the surface of the workpiece W, and a depression mark is generated on the surface of the molded product W ₁ , which requires rework or rework. There is a problem that becomes. In particular, when nibbling processing the curved portion L ₂ of the planned cutting line L, dregs rise there is likely a problem occurs.

  An object of the present invention is to provide a punch, a die, a pressing method, a processing program creation device for a press machine, and a processing program for a press machine that can improve the quality of a molded product by suppressing the occurrence of scumming. .

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
In the invention of claim 1, as shown in FIGS. 2 and 4, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( W ₁ ) is a punch for cutting, and a curvature larger than the radius of curvature (R ₁₀ ) of the planned cutting line in order to punch the outer shape of the molded product into a convex curve portion (L ₂ ) A punch (1A) having a concave cutting edge shape with a radius (R ₁₁ ).

  According to a second aspect of the present invention, in the punch according to the first aspect, as shown in FIG. 2, the shape of the cutting edge is substantially rectangular, and at least one long side is a circular arc. is there.

As shown in FIGS. 5 and 7, the invention of claim 3 continuously punches the workpiece (W) along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( W ₁ ) is a punch for cutting, and a radius of curvature smaller than the radius of curvature (R ₂₀ ) of the planned cutting line for punching the outer shape of the molded product into a concave curved portion (L ₂ ) It has a convex cutting edge shape (R _21), wherein the cutting edge shape is substantially rectangular and is punch (1B), wherein at least one of the long sides is arcuate.

In the invention of claim 4, as shown in FIGS. 3 and 4, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( A die for cutting to W ₁ ), and a curvature larger than the radius of curvature (R ₁₀ ) of the planned cutting line in order to punch the outer shape of the molded product into a convex curve portion (L ₂ ) A die (2A) having a concave cutting edge shape with a radius (R ₁₁ ).

  According to a fifth aspect of the present invention, in the die according to the fourth aspect, as shown in FIG. 3, the cutting edge shape is a substantially rectangular shape, and at least one long side is a circular arc. is there.

In the invention of claim 6, as shown in FIGS. 6 and 7, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( A die for cutting into W ₁ ), and a radius of curvature smaller than the radius of curvature (R ₂₀ ) of the planned cutting line in order to punch the outer shape of the molded product into a concave curved portion (L ₂ ) It has a convex cutting edge shape (R _21), wherein the cutting edge shape is substantially rectangular and is die (2B), wherein at least one of the long sides is arcuate.

In the invention of claim 7, as shown in FIGS. 4 and 13, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( a press method for cutting the W _1), said punch having a concave cutting edge shape of the curvature radius of the cutting line (curvature greater than R ₁₀₎ radius (R ₁₁₎ and (1A) and the die (2A) Is a pressing method characterized by including a curve processing step (S240) for punching the outer shape of the molded product into a convex curve portion (L ₂ ).

According to an eighth aspect of the present invention, in the pressing method according to the seventh aspect, as shown in FIGS. 2 and 3, in the curving process, the cutting edge shape is substantially rectangular and at least one long side is an arc. A pressing method comprising a step of punching with the punch and the die.

As shown in FIGS . 5 to 7 and 13, the invention of claim 9 continuously punches the workpiece (W) along the planned cutting line (L), and the workpiece is shaped into a predetermined shape. A punch method (1B) and die having a convex cutting edge shape with a radius of curvature (R ₂₁ ) smaller than the radius of curvature (R ₂₀ ) of the planned cutting line, which is a pressing method for cutting into a molded product (W ₁ ). by the (2B), said saw including a contour of the concave curved portion of the molded article (L ₂₎ stamped on the curve processing step (S240), the curve processing step, the cutting edge shape is substantially rectangular, It is a press method characterized by including the process of punching with the said punch and die | dye whose at least 1 long side is a circular arc .

In the invention of claim 10, as shown in FIGS. 4 and 11, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( W ₁ ) is a machining program creation device of the press machine (3) for creating a machining program for cutting, and has a concave shape with a radius of curvature (R ₁₁ ) larger than the radius of curvature (R ₁₀ ) of the planned cutting line. A curve machining program creation unit for creating a curve machining program for punching the outer shape of the molded product into a convex curve portion (L ₂ ) with a punch (1A) and a die (2A) having a cutting edge shape ( 18b) is a machining program creation device (18) for a press machine.

The invention of claim 11 is the machining program creating device of a press machine according to claim 10, as shown in FIGS. 2 and 3, the curve machining program creation unit, the cutting edge shape is substantially rectangular, It is a processing program creation device for a press machine for creating the curve machining program for punching with the punch and the die having at least one long side of an arc.

In the invention of claim 12, as shown in FIGS . 5 to 7 and 11, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is shaped into a predetermined shape. A machining program creation device for a press machine (3) for creating a machining program for cutting into a molded product (W ₁ ), wherein the curvature radius (R ₂₁ ) is larger than the curvature radius (R ₂₀ ) of the planned cutting line. Curve machining program for creating a curve machining program for punching the outer shape of the molded product into a concave curved portion (L ₂ ) with a punch (1B) having a convex cutting edge shape and a die (2B) The curve machining program creation unit includes a creation unit (18b), and the curve machining program creation unit has the cutting edge shape substantially rectangular and at least one long side is a circular arc, and the curve machining for punching with the punch and the die Program A machining program creating device for a press machine, characterized by creating (18).

In the invention of claim 13, as shown in FIGS. 4 and 12, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is molded into a predetermined shape ( A punching machine having a concave cutting edge shape with a radius of curvature (R ₁₁ ) that is larger than the radius of curvature (R ₁₀ ) of the planned cutting line (W ₁ ) A press machine characterized by causing a computer (21) to execute a curve processing procedure (S120) for punching the outer shape of the molded product into a convex curve portion (L ₂ ) by means of 1A) and a die (2A). This is a machining program.

According to a fourteenth aspect of the present invention, in the machining program for a press machine according to the thirteenth aspect, as shown in FIGS. 2 and 3, the curving processing procedure is such that the cutting edge shape is substantially rectangular and at least one long A press machine processing program characterized by including a punching process with the punch and the die whose sides are arcs.

In the invention of claim 15, as shown in FIGS . 5 to 7 and 12, the workpiece (W) is continuously punched along the planned cutting line (L), and the workpiece is shaped into a predetermined shape. A processing program of the press machine (3) for cutting into a molded product (W ₁ ), which has a convex cutting edge shape having a radius of curvature (R ₂₁ ) larger than the radius of curvature (R ₂₀ ) of the planned cutting line by a punch (1B) and the die (2B) having, to execute curve machining steps to punching the outer shape of the molded article in a concave curved portion (L ₂₎ to (S120) to the computer (21), said curve machining The procedure is a processing program for a press machine including a procedure for punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc .

  According to the present invention, it is possible to improve the quality of a molded product by suppressing the occurrence of scumming.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing as an example a workpiece to be punched by a punch and die according to an embodiment of the present invention.
A workpiece W shown in FIG. 1 is a material (work) to be punched and is, for example, a rectangular stainless steel plate, and a protective sheet made of synthetic resin is attached to the surface of the stainless steel plate. The molded product W ₁ is a product after punching, and is, for example, an outer plate (wife plate) that constitutes the end of the end (wife) of the vehicle body of the railway vehicle. The scrap W ₂ is an outer portion of the molded product W ₁ after the punching process. The planned cutting line L is an outline that becomes the final shape of the molded product W ₁ when the workpiece W is punched and cut. The planned cutting line L is composed of a straight line portion L ₁ and a curved line portion L ₂ which are the final shape of the molded product W ₁ .

  FIG. 2 is an external view schematically showing a punch (concave shape) according to an embodiment of the present invention, FIG. 2 (A) is a front view, FIG. 2 (B) is a side view, and FIG. C) is a bottom view. FIG. 3 is an external view schematically showing a die (concave shape) according to an embodiment of the present invention, FIG. 3 (A) is a front view, FIG. 3 (B) is a side view, and FIG. C) is a plan view. FIG. 4 is a plan view schematically showing nibbling processing by a punch (concave) and a die (concave) according to an embodiment of the present invention. FIG. 5 is an external view schematically showing a punch (convex shape) according to an embodiment of the present invention, FIG. 5 (A) is a front view, FIG. 5 (B) is a side view, and FIG. (C) is a bottom view. 6 is an external view schematically showing a die (convex shape) according to an embodiment of the present invention, FIG. 6 (A) is a front view, FIG. 6 (B) is a side view, and FIG. (C) is a plan view. FIG. 7 is a plan view schematically showing nibbling processing by a punch (convex shape) and a die (convex shape) according to an embodiment of the present invention.

2 and punch (male) shown in FIG. 4 1A, 1B is continuously punched workpiece W along the cutting line L, cutting the workpiece W to the molded article W ₁ having a predetermined shape It is a tool for press working (die part) to do. The punches 1A and 1B are provided with cutting edge portions 1a and 1b for cutting the workpiece W, respectively. Punch 1A, 1B are a plurality of types prepared in accordance with the magnitude of the curvature of the curved portion L ₂ radius R _10, R _20.

The cutting edge portion 1a shown in FIGS. 2 and 4 has a radius of curvature R ₁₁ larger than the radius of curvature R ₁₀ of the planned cutting line L in order to punch the outer shape of the molded product W ₁ into a convex curved portion L _2. It has a concave cutting edge shape. As shown in FIG. 2C, the cutting edge portion 1a has a substantially rectangular cutting edge shape, and one long side is a concave arc. Cutting edge 1b shown in FIGS. 5 and 7, in order to punching the outer shape of the molded product W ₁ concavely curved portion L _2, cutting line curvature radius R ₂₀ of the small radius of curvature R ₂₁ than the L It has a convex cutting edge shape. As shown in FIG. 5C, the cutting edge portion 1b has a substantially rectangular cutting edge shape, and one long side is a convex arc.

3 and the die (female) shown in FIG. 5 2A, 2B are continuously punched workpiece W along the cutting line L, cutting the workpiece W to the molded article W ₁ having a predetermined shape This is a press working tool (mold part) for forming the mold together with the punches 1A and 1B. The dies 2A and 2B include cutting edge portions 2a and 2b for cutting the workpiece W, respectively. Die 2A, 2B are a plurality of types prepared in accordance with the magnitude of the curvature of the curved portion L ₂ radius R _10, R _20.

Cutting edge 2a as shown in FIG. 3, as shown in FIG. 4, for stamping the external form of the molded article W ₁ convexly curved portion L _2, larger than the radius of curvature R ₁₀ of the cutting line L It has a concave cutting edge shape of the curvature radius R _11. The cutting blade portion 2a is provided with an appropriate clearance so that a slight gap is formed between the cutting blade portion 2a and the cutting blade portion 1a on the punch 1A side during punching. As shown in FIG. 3C, the cutting edge portion 2a has a substantially rectangular shape (substantially long-angle shape) as in the cutting edge portion 1a shown in FIG. It is a concave arc. Cutting edge 2b shown in FIG. 6, as shown in FIG. 7, for stamping the external form of the molded article W ₁ concavely curved portion L _2, smaller curvature than the radius of curvature R ₂₀ of the cutting line L having a convex cutting edge shape of radius R _21. The cutting blade portion 2b is provided with an appropriate clearance so that a slight gap is formed between the cutting blade portion 2b and the cutting blade portion 1b on the punch 1B side during punching. As shown in FIG. 5 (C), the cutting edge portion 2b has a substantially rectangular shape (substantially long-angle shape) as in the cutting edge portion 1b shown in FIG. 3 (C). It is a convex arc.

  FIG. 8 is a plan view schematically showing a press machine in which the punch and die according to the embodiment of the present invention are used. FIG. 9 is a plan view schematically showing a press machine in which the punch and die according to the embodiment of the present invention are used. FIG. 10 is an enlarged cross-sectional view of a portion X in FIG. FIG. 11 is a block diagram of a press machine according to an embodiment of the present invention.

The press machine 3 shown in FIGS. 8 to 11 is an apparatus for continuously punching a workpiece W along a planned cutting line L and cutting the workpiece W into a molded product W ₁ having a predetermined shape. The press machine 3 includes a punch holder 4 shown in FIG. 10, a die holder 5, a stripper 6, a press drive device 7 shown in FIG. 11, an upper turret 8 shown in FIGS. 8, 9 and 11, and FIGS. The lower turret 9 shown in FIG. 11, the turret drive device 10 shown in FIG. 11, the turret rotation position detection device 11, the processing table 12, the table drive device 13, the table position detection device 14, and the information input device 15 The machining information storage device 16, the mold information storage device 17, the machining program creation device 18, the machining program storage device 19, the operation device 20, and the control device 21 are provided. The press machine 3 shown in FIGS. 8 to 11 rotates the upper turret 8 and the lower turret 9 in synchronization with the turret driving device 10 and indexes arbitrary punches 1A and 1B and dies 2A and 2B to the punching positions. The turret punch press performs punching while moving the workpiece W by the processing table 12.

  The punch holder 4 shown in FIG. 10 is a member for fixing the punches 1A and 1B, the die holder 5 is a member for fixing the dies 2A and 2B, and the stripper 6 is a workpiece to be machined when the workpiece W is punched out. It is a member that suppresses the workpiece W so that W does not deform. The press drive device 7 is a device that drives the punches 1A and 1B. When the press machine 3 is a mechanical press, the press drive device 7 rotates the flywheel by the main motor, transmits the rotational energy of the flywheel to the punches 1A and 1B through the drive mechanism, and moves the punches 1A and 1B in the vertical direction. Reciprocate. When the press machine 3 is a hydraulic press, the press drive device 7 supplies hydraulic oil to the hydraulic cylinder by a hydraulic pump, and reciprocates the punches 1A and 1B in the vertical direction in conjunction with the reciprocating motion of the piston rod.

  The upper turret 8 is a member that detachably mounts a plurality of punches 1A, 1B having different shapes in the circumferential direction at predetermined intervals, and the lower turret 9 has a plurality of dies 2A, 2B in the circumferential direction. This is a member that is detachably mounted with an interval of. The turret driving device 10 is a device that rotationally drives the upper turret 8 and the lower turret 9. The turret rotation position detection device 11 is a device that detects the rotation positions of the upper turret 8 and the lower turret 9, and outputs these detection results to the control device 21 as rotation position signals (rotation position information).

  The processing table 12 is a device that holds and moves the workpiece W. The table driving device 13 is a device that drives the machining table 12, horizontally moves the machining table 12 in the X-axis direction and the Y-axis direction, and rotates the machining table 12 around the Z-axis. The table position detection device 14 is a device that detects the position of the machining table 12, detects the current position of the machining table 12 in the X-axis direction and the Y-axis direction, and detects the rotational position of the machining table 12 around the Z-axis. These detection results are output to the control device 21 as position detection signals (position detection information).

  The information input device 15 is a device for inputting various information. The information input device 15 reads, for example, various information provided through a telecommunication line or reads various information recorded on an information recording medium. The information input device 15 outputs information read from an electric communication line or an information recording medium to the control device 21.

The machining information storage device 16 is a device that stores machining information necessary for punching the workpiece W. The machining information storage device 16 includes, for example, the length of the straight line portion L ₁ of the planned cutting line L, the length of the curved portion L ₂ and the curvature radii R ₁₀ and R ₂₀ , the machining accuracy, the machining time required for punching, and the machining target This is a memory for storing machining information related to the feed amounts Δ ₁ and Δ _{2 of the} object W.

The mold information storage device 17 is a device that stores mold information related to a mold used for punching. The mold information storage device 17 is, for example, the cutting blade shapes of the punches 1A and 1B and the dies 2A and 2B that can be used for punching the workpiece W, the radii of curvature R ₁₁ and R ₂₁ , the cutting blade portion 2a, This is a memory for storing mold information relating to the dimensions of 2b, the position of the upper turret 8 to which the punches 1A and 1B are mounted, the position of the lower turret 9 to which the dies 2A and 2B are mounted, and the like.

The machining program creation device 18 is a device that creates a machining program for continuously punching a workpiece W along a planned cutting line L and cutting the workpiece W into a molded product W ₁ having a predetermined shape. is there. Machining program creating device 18 creates a series of machining program for forming a molded article W ₁ of the workpiece W is punched along the cutting line L shown in FIG. 1, the control device of this machining program To 21. As shown in FIG. 11, the machining program creation device 18 includes a linear machining program creation unit 18a, a curved machining program creation unit 18b, a program synthesis unit 18c, and the like. The machining program creation device 18 is, for example, an NC program creation device that creates an NC program for numerically controlling the selection of the punches 1A and 1B and the dies 2A and 2B and the positioning of the workpiece W.

The straight line machining program creation unit 18a is a means for creating a straight line machining program for punching the outer shape of the molded product W ₁ into the straight line portion L ₁ . Linear machining program creating unit 18a, for example, by a punch 101 and a die 102 having a circular cutting edge shape as shown in FIGS. 14 and 15, the linear processing for punching the straight line portion L ₁ shown in FIG. 1 A program is created based on the machining information and mold information, and this linear machining program is output to the program synthesis unit 18c.

Curve machining program creating unit 18b is a means for creating a curve machining program for stamping the external form of the molded article W ₁ to convex or concave curved portion L _2. The curved machining program creation unit 18b uses, for example, a punch 1A having a concave cutting edge shape shown in FIG. 2 and a die 2A having a concave cutting edge shape shown in FIG. A curve machining program for punching L ₂ is created based on the machining information and mold information, and this curve machining program is output to the program synthesis unit 18c. Moreover, the curve machining program creation unit 18b has a concave shape shown in FIG. 7 by, for example, a punch 1B having a convex cutting edge shape shown in FIG. 5 and a die 2B having a convex cutting edge shape shown in FIG. of the curved portion L ₂ prepared in accordance with curve machining program for stamping on the processing information and mold information, and outputs the curve machining program in the program combining unit 18c.

The program synthesizing unit 18c is a unit that synthesizes the linear machining program created by the linear machining program creation unit 18a and the curved machining program created by the curved machining program creation unit 18b into a continuous machining program. Program synthesizing unit 18c combines the linear machining program and curved machining program one continuous machining program for forming a molded article W ₁ and stamping the workpiece W to machining end position from the machining start position .

The machining program storage device 19 is a device that stores a machining program. Machining program storage device 19, the machining program is a memory creation device 18 stores the machining program created, for example, the final shape different each molded article W ₁ in in correspondence machining program was stored.

  The operating device 20 is a device that operates the press machine 3. The operation device 20 is, for example, an operation switch that is operated by an operator when causing the press machine 3 to perform a predetermined operation, and stops an operation start switch that is operated when a punching process is started or a punching process. An operation stop switch that is sometimes operated is provided.

Next, machining program creation processing by the machining program creation device for a press machine according to the embodiment of the present invention will be described.
FIG. 12 is a flowchart for explaining a machining program creation process by the machining program creation device for a press machine according to the embodiment of the present invention.
In a step (hereinafter referred to as S) 100 shown in FIG. 12, the machining program creation device 18 executes machining information reading processing. The control device 21 reads the machining information from the machining information storage device 16 and outputs the machining information to the machining program creation device 18, and the machining program creation device 18 reads the machining information.

  In S110, the machining program creation device 18 executes a mold information reading process. The control device 21 reads out the die information from the die information storage device 17 and outputs the die information to the machining program creation device 18, and the machining program creation device 18 reads this die information.

In S120, the straight line machining program creation unit 18a executes a straight line machining program creation process. Linear machining program creating unit 18a is by referring to the processing information, the length of the linear portion L ₁ shown in FIG. 1, the processing time to identify and machining accuracy. Next, the line machining program creating unit 18a is with reference to the mold information, selects a mold optimum cutting geometry for punching straight portions L _1. For example, as shown in FIG. 17A, when the outer shape of the molded product W ₁ is punched into the straight line portion L ₁ , the straight line machining program creation unit 18a forms the punch 101 and the die 102 as shown in FIGS. Select. As a result, a linear machining program in which the length of the straight line portion L ₁ , the feed amount Δ ₁₀ , the position of the upper turret 8 where the punch 101 is mounted, the position of the lower turret 9 where the die 102 is mounted, and the like are programmed. The linear machining program creation unit 18a creates and outputs the program to the program synthesis unit 18c.

In S130, the curve machining program creation unit 18b executes a curve machining program creation process. Curve machining program creating unit 18b is with reference to the processing information, the length of the curved portion L ₂ shown in FIG. 1, the radius of curvature R _10, R _20, processing time, to identify and machining accuracy. Then, the curve machining program creating unit 18b is with reference to the mold information, selects a mold optimum cutting geometry for punching a curved portion L _2. For example, as shown in FIG. 4, when the outer shape of the molded product W ₁ is punched into a convex curved portion L ₂ , the radius of curvature R ₁₀ of the curved portion L ₂ is larger than that shown in FIGS. concave punch 1A and the die 2A curves machining program creating unit 18b of slightly larger radius of curvature R ₁₁ is selected. On the other hand, as shown in FIG. 7, when the outer shape of the molded product W ₁ is punched into a concave curved portion L ₂ , it is slightly smaller than the radius of curvature R ₂₀ of the curved portion L ₂ as shown in FIGS. convex punch 1B and die 2B curves machining program creating unit 18b of with a smaller radius of curvature R ₂₁ is selected. As a result, the length of the curved portion L ₂ , the curvature radii R ₁₀ and R ₂₀ , the feed amounts Δ ₁ and Δ ₂ , the position of the upper turret 8 on which the punches 1A and 1B are mounted, and the dies 2A and 2B are mounted. The curve machining program creation unit 18b creates a curve machining program in which the position of the lower turret 9 is programmed and outputs the program to the program synthesis unit 18c.

  In S140, the program synthesis unit 18c executes a program synthesis process. The program synthesis unit 18c synthesizes the linear machining program and the curve machining program, and the program synthesis unit 18c creates a series of machining programs for continuously punching the workpiece W from the machining start point to the machining end point. To do.

  In S150, the machining program creation device 18 executes machining program transmission processing. When the program synthesis unit 18 c creates a machining program, the machining program creation device 18 outputs the machining program to the control device 21. As a result, the control device 21 outputs the machining program to the machining program storage device 19, and the machining program is stored in the machining program storage device 19.

Next, a pressing method according to an embodiment of the present invention will be described.
FIG. 13 is a flowchart for explaining the pressing method according to the embodiment of the present invention. Hereinafter, the operation of the control device 21 will be mainly described.
In S200, the control device 21 reads the machining program from the machining program storage device 19, and the control device 21 instructs a series of punching (nibbling) to the press machine 3 according to the machining program. When the control device 21 instructs the table driving device 13 to start operation, the table is based on the output signal of the table position detecting device 14 so that the processing start point of the workpiece W is positioned at the punching processing position of the press machine 3. The control device 21 performs feedback control on the driving device 13.

In S210, the control device 21 determines whether or not the linear machining is performed. Based on the machining program, the control device 21 determines whether the planned cutting line L is the straight line portion L ₁ or the curved line portion L ₂ , and proceeds to S220 when it is linear machining, and proceeds to S230 when it is not linear machining.

In S220, the press machine 3 starts linear processing. When the control device 21 executes the linear machining process according to the linear machining program among the machining programs, the control device 21 commands the press drive device 7, the turret drive device 10 and the table drive device 13 to start operation. As a result, the turret driving device 10 is controlled based on the output signal of the turret rotation position detecting device 11 so that the punch 101 and the die 102 as shown in FIGS. 14 and 15 are positioned at the punching position of the press machine 3. The device 21 performs feedback control. Next, the press drive device 7 to reciprocate the punch 101, the table driving unit 13 moves the processing table 12 at a feed amount delta _10, the punch 101 and the die 102 as shown in FIGS. 16 and 17 (A) As shown in FIG. 17A, the workpiece W is continuously punched to form a linear portion L ₁ having a predetermined length on the outer shape of the molded product W ₁ .

In S230, the control device 21 determines whether or not it is curve processing. Based on the machining program, the control device 21 determines whether the planned cutting line L is the straight line portion L ₁ or the curved portion L ₂ , and proceeds to S240 when it is curved processing, and proceeds to S250 when it is not curved processing.

In S240, the press machine 3 starts curve processing. When the control device 21 executes the curve machining process according to the curve machining program among the machining programs, the control device 21 commands the press drive device 7, the turret drive device 10 and the table drive device 13 to start operation. As a result, the output signals of the turret rotation position detection device 11 are set so that the punches 1A and 1B and the dies 2A and 2B shown in FIGS. 2, 3, 5 and 6 are positioned at the punching positions of the press machine 3. Based on this, the control device 21 performs feedback control of the turret driving device 10. Next, when the press driving device 7 reciprocates the punches 1A and 1B and the table driving device 13 moves the processing table 12 by the feed amounts Δ ₁ and Δ ₂ , as shown in FIG. 10, the punches 1A and 1B and the die The workpiece W is continuously punched between 2A and 2B, and as shown in FIGS. 4 and 7, the outer shape of the molded product W ₁ has curved portions L ₂ with predetermined radii of curvature R ₁₀ and R _20. Is formed.

  In S250, the control device 21 determines whether or not the processing is finished. Based on the machining program, the control device 21 determines whether or not the punching has been completed up to the machining end point. As a result, when the control device 21 determines that all the punching processes have been completed, the control device 21 commands the table driving device 13 to end the operation, and the processing table 12 is driven to the discharge position where the workpiece W is discharged. As described above, the control device 21 controls the table driving device 13 to complete a series of punching processes. On the other hand, when the control device 21 determines that all the punching processes have not been completed, the process returns to S210, and the processes after S210 are repeated until all the punching processes are completed.

The punch, die, press method, press machine processing program creation device, and press machine processing program according to the embodiment of the present invention have the following effects.
(1) In this embodiment, the outer shape of the molded product W ₁ is convex by the punch 1A having a concave cutting edge shape having a radius of curvature R ₁₁ larger than the radius of curvature R ₁₀ of the planned cutting line L and the die 2A. punching in the curved portion L _2. Further, in this embodiment, the outer shape of the molded product W ₁ is formed into a concave curved portion by the punch 1B and the die 2B having a convex cutting edge shape having a curvature radius R ₂₁ smaller than the curvature radius R ₂₀ of the planned cutting line L. punching to L _2. For this reason, it is possible to suppress the occurrence of scum and the quality of the molded product W ₁ by improving the scum generated during the punching process.

(2) In this embodiment, the cutting edges of the punches 1A and 1B and the dies 2A and 2B are substantially rectangular, and at least one long side is an arc. Therefore, the length of the cutting edge portions 1a and 2a is smaller than the cutting edges 101a and 102a having a circular cutting edge shape like the conventional punch 101 and die 102 shown in FIGS. become longer. As a result, compared to the feed amounts Δ ₁₀ and Δ ₂₀ shown in FIG. 17, the feed amounts Δ ₁ and Δ ₂ become longer as shown in FIGS. 4 and 7, and the time required for punching can be shortened. .

The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the case where the molded product W ₁ is a faceplate of a railway vehicle has been described as an example. However, the present invention is also applied to a case where a molded product having a shape other than the faceplate is punched. be able to. In this embodiment, the case where one long side of the cutting edges 1a and 2a of the punches 1A and 1B and the dies 2A and 2B is formed in an arc shape has been described as an example. It can also be formed in an arc shape.

(2) In this embodiment, the case where the machining table 12 is rotated around the Z axis to change the posture of the workpiece W and punched is described as an example. However, the machining table 12 is rotated around the Z axis. Without punching, the punches 1A and 1B and the dies 2A and 2B can be rotated and punched. In this embodiment, the case where the planned cutting line L is configured by the straight line portion L ₁ and the curved portion L ₂ has been described as an example. However, the planned cutting line L is configured by only the curved portion L _2. The present invention can be applied to cases.

It is a top view which shows as an example the to-be-processed object punched by the punch and die which concern on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows schematically the punch (concave shape) which concerns on embodiment of this invention, (A) is a front view, (B) is a side view, (C) is a bottom view. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows the die | dye (concave shape) which concerns on embodiment of this invention roughly, (A) is a front view, (B) is a side view, (C) is a top view. It is a top view which shows typically the nibbling process by the punch (concave shape) and die | dye (concave shape) which concern on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows schematically the punch (convex shape) which concerns on embodiment of this invention, (A) is a front view, (B) is a side view, (C) is a bottom view. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows roughly the die | dye (convex shape) which concerns on embodiment of this invention, (A) is a front view, (B) is a side view, (C) is a top view. It is a top view which shows typically the nibbling process by the punch (convex shape) and die | dye (convex shape) which concern on embodiment of this invention. It is a top view which shows roughly the press machine with which the punch and die | dye which concern on embodiment of this invention are used. It is a top view which shows roughly the press machine with which the punch and die | dye which concern on embodiment of this invention are used. It is sectional drawing which expands and shows the X section of FIG. 1 is a block diagram of a press machine according to an embodiment of the present invention. It is a flowchart for demonstrating the production | generation process of the machining program by the machining program creation apparatus of the press machine which concerns on embodiment of this invention. It is a flowchart for demonstrating the press method which concerns on embodiment of this invention. It is an external view which shows the conventional punch schematically, (A) is a front view, (B) is a bottom view. It is an external view which shows the conventional die | dye schematically, (A) is a front view, (B) is a top view. It is sectional drawing which shows roughly the nibbling process operation by the conventional punch and die | dye. It is a top view which shows typically the nibbling process by the conventional punch and die, (A) is a top view when carrying out the nibbling process of a linear part, (B) When carrying out the nibbling process of a curve part FIG.

Explanation of symbols

1A, 1B Punch 2A, 2B Die 1a, 1b, 2a, 2b Cutting edge 3 Press machine 4 Punch holder 5 Die holder 6 Stripper 7 Press drive device 8 Upper turret 9 Lower turret 10 Turret drive device 11 Turret rotation position detection device 12 Processing Table 13 Table drive device 14 Table position detection device 15 Information input device 16 Machining information storage device 17 Mold information storage device 18 Machining program creation device 18a Straight line machining program creation unit 18b Curve machining program creation unit 18c Program synthesis unit 19 Machining program storage Device 20 Operating device 21 Control device W Workpiece W ₁ Molded product W ₂ Scrap L Planned cutting line L ₁ Straight line portion L ₂ Curve portion R ₁₀ , R ₁₁ , R ₂₀ , R ₂₁ Curvature radius Δ ₁ , Δ ₂ Feed amount

Claims (15)

A punch for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
In order to punch out the outer shape of the molded product into a convex curve portion, it has a concave cutting edge shape with a radius of curvature larger than the radius of curvature of the planned cutting line,
A punch characterized by The punch according to claim 1,
The cutting edge shape is substantially rectangular, and at least one long side is an arc.
A punch characterized by A punch for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
Wherein in order to punching the outer shape of the molded article in a concave curved portion, have a convex cutting edge shape of radius of curvature smaller than the radius of curvature of the cutting line,
The cutting edge shape is substantially rectangular, and at least one long side is an arc.
A punch characterized by A die for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
In order to punch out the outer shape of the molded product into a convex curve portion, it has a concave cutting edge shape with a radius of curvature larger than the radius of curvature of the planned cutting line,
Die characterized by. A die according to claim 4,
The cutting edge shape is substantially rectangular, and at least one long side is an arc.
Die characterized by. A die for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
Wherein in order to punching the outer shape of the molded article in a concave curved portion, have a convex cutting edge shape of radius of curvature smaller than the radius of curvature of the cutting line,
The cutting edge shape is substantially rectangular, and at least one long side is an arc.
Die characterized by. A press method for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
Including a curve processing step of punching the outer shape of the molded product into a convex curve portion by a punch and a die having a concave cutting edge shape having a radius of curvature larger than the curvature radius of the planned cutting line,
A press method characterized by the above. The pressing method according to claim 7,
The curve processing step includes a step of punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc,
A press method characterized by the above. A press method for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product having a predetermined shape,
By a punch and a die having a small radius of curvature of the convex cutting edge shape than the radius of curvature of the cutting line, seen including a curve machining step of punching the outer shape of the molded article in a concave curved portion,
The curve processing step includes a step of punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc,
A press method characterized by the above. A processing program creation device for a press machine that continuously punches a processing object along a planned cutting line and creates a processing program for cutting the processing object into a molded product of a predetermined shape,
A curve for creating a curve machining program for punching the outer shape of the molded product into a convex curved portion by a punch and a die having a concave cutting edge shape having a radius of curvature larger than the radius of curvature of the planned cutting line Having a machining program creation unit;
An apparatus for creating a machining program for a press machine. In the processing program preparation apparatus of the press machine of Claim 10,
The curve machining program creation unit creating the curve machining program for punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc;
An apparatus for creating a machining program for a press machine. A processing program creation device for a press machine that continuously punches a processing object along a planned cutting line and creates a processing program for cutting the processing object into a molded product of a predetermined shape,
A curve for creating a curve machining program for punching an outer shape of the molded product into a concave curved portion by a punch and a die having a convex cutting edge shape having a curvature radius larger than the curvature radius of the planned cutting line It has a machining program creation part,
The curve machining program creation unit creating the curve machining program for punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc;
An apparatus for creating a machining program for a press machine. A processing program of a press machine for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product of a predetermined shape,
Causing a computer to execute a curve processing procedure for punching an outer shape of the molded product into a convex curve portion by using a punch and a die having a concave cutting edge shape having a radius of curvature larger than the radius of curvature of the planned cutting line. ,
A processing program for a press machine. In the processing program of the press machine according to claim 13,
The curve processing procedure includes a procedure of punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc;
A processing program for a press machine. A processing program of a press machine for continuously punching a workpiece along a planned cutting line and cutting the workpiece into a molded product of a predetermined shape,
By causing a computer to execute a curve processing procedure for punching the outer shape of the molded product into a concave curved portion by a punch and a die having a convex cutting edge shape having a radius of curvature larger than the radius of curvature of the planned cutting line,
The curve processing procedure includes a procedure of punching with the punch and the die, wherein the cutting edge shape is substantially rectangular and at least one long side is an arc;
A processing program for a press machine.

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