JP2018167311A - Cutting and separating method for processed products and processed products - Google Patents

Abstract

Disclosed is a cutting and separating method and a processed product for cutting and separating a processed product from a plate-shaped workpiece. A cutting / separating method for cutting and separating a workpiece from a plate-like workpiece, wherein the workpiece 15 is cut and separated from the plate-like workpiece W in a desired range along the contour of the workpiece. A step of performing laser cutting, and pressurization is performed on a plurality of locations on the workpiece W at positions close to the slits 17A and 17B formed by the laser cutting, and the cut surface of the workpiece is cut across the slits 17A and 17B. Laser cutting of the remaining contour portion 17C of the processed product 15 when the pressed surface 23 is pressed and the cut surface of the processed product 15 is pressed and held by the multiple pressed portions 23. And a process of performing processing. [Selection] Figure 2

Description

  The present invention relates to a cutting / separating method for cutting and separating a workpiece from a plate-shaped workpiece and the workpiece. More specifically, the present invention relates to a cutting / separating method and a processed product that can hold a workpiece cut and separated from a plate-shaped workpiece so as not to fall from the workpiece.

  Conventionally, when a workpiece is cut and separated from a plate-shaped workpiece, the separated workpiece may get on the upper surface of the workpiece or may enter the lower side of the workpiece. Therefore, it is difficult to continuously cut and separate a plurality of cut products (processed products) from the workpiece. Therefore, when cutting and separating a plurality of processed products from a plate-shaped workpiece one after another, the workpiece and the processed product are connected to each other via a minute connection part (micro joint) so that the processed products are not separated from the workpiece. May be disconnected in a connected state.

  As described above, when the workpiece and the processed product are connected to each other through the micro joint, a minute protrusion due to the micro joint is generated around the processed product. Therefore, in some cases, it is necessary to remove minute protrusions. Therefore, it has been proposed to process the workpiece and the processed product in a connected state without generating a minute protrusion due to the micro joint (see, for example, Patent Documents 1 and 2).

JP-A-5-245671 JP-A-6-238475

  In the configuration described in Patent Document 1, when a cut piece is cut and separated from a plate-shaped workpiece by laser processing, an adhesive is supplied to the position of a cutting line (slit) by laser processing so that the cut piece is removed from the workpiece. It is the structure which adhere | attaches so that it may not separate. Therefore, when the cut piece is separated from the workpiece, it is necessary to remove the adhesive attached to the cut piece.

  In the configuration described in Patent Document 2, when a product portion is cut and separated from a workpiece by laser processing, the product is melted when a part of the workpiece close to the cutting line cut by the laser beam is melted. The part is joined to the workpiece. Accordingly, the product part may be melted and integrated by the melt.

The present invention was made in view of the conventional problems as described above, and is a cutting and separating method for cutting and separating a workpiece from a plate-shaped workpiece,
(A) a step of performing laser cutting in a desired range along the contour of the workpiece in order to cut and separate the workpiece from the plate-like workpiece;
(B) performing a pressing process at a plurality of locations on the workpiece at a position close to the slit formed by the laser cutting process, and projecting and forming a pressing portion that presses the cut surface of the workpiece across the slit;
(C) a step of performing laser cutting of the remaining contour portion of the workpiece when the cut surface of the workpiece is pressed and held by a plurality of pressing portions;
It is characterized by having.

  In the method for cutting and separating a workpiece, the position where the pressing portion is formed is a position close to the remaining contour portion.

  Moreover, in the cutting / separating method for the processed product, the position where the pressing portion is formed is a position facing the processed product.

  In the method for cutting and separating a workpiece, the position where the pressing portion is formed is a position where the workpiece is restricted from rotating about a straight line connecting the pressing portions formed at two places.

  In the method for cutting and separating a processed product, the pressing portion presses and holds the cut surface of the processed product with a curved surface.

  In the method for cutting and separating a workpiece, the workpiece is cut and separated by a laser / punch combined processing machine having a laser cutting function and a punch press function.

  Moreover, it is a processed product cut and separated from the plate-like workpiece by laser cutting processing, and has indentations pressed by the pressing portion at a plurality of locations on the cut surface which is the outer peripheral surface of the processed product.

  According to the present invention, in order to cut and separate a workpiece from a plate-shaped workpiece, laser cutting is performed over a desired range along the contour of the workpiece. Then, pressure processing is performed at a plurality of locations close to the slit formed by the laser cutting process, and a pressing portion that presses the cut surface of the processed product across the slit is projected and formed by the pressure processing.

  Therefore, the processed product is pressed and held by the plurality of pressing portions without dropping from the workpiece. Therefore, it is easy to remove the processed product from the workpiece after cutting and separating the processed product, and no post-processing is necessary after the removal.

It is explanatory drawing which shows the whole structure of the laser punch composite machine which can be used for the cutting | disconnection separation processing method of this invention. It is explanatory drawing in the case of cut-separating a processed product. It is explanatory drawing of the form which pressurizes in the position close | similar to a slit, and presses a workpiece with a protrusion part. It is explanatory drawing of the various forms which form a protrusion part.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. To facilitate understanding, first, a laser / punch combined machine for carrying out the present invention will be described. The laser / punch combined processing machine is well known as described in, for example, Japanese Patent Application Laid-Open No. 2009-18334. Therefore, the configuration of the laser / punch combined processing machine will be schematically described.

  As shown in FIG. 1, the combined laser / punch machine 1 includes a frame 3 having an upper frame 3U and a lower frame 3L. The upper frame 3U is rotatably provided with an upper turret 5U provided with a plurality of punches P, and the lower frame 3L is provided with a lower turret 5L provided with a plurality of dies D corresponding to the punches P. It is provided freely. The upper frame 3U is provided with a striker (ram) 7 for striking and pressing the punch P indexed and positioned at the punching lowered position.

  The lower frame 3L is provided with a work table 9 for supporting a plate-like work W. On the lower frame 3L, there is provided a workpiece movement positioning device 11 capable of moving and positioning the workpiece W in the X-axis direction (direction perpendicular to the paper surface in FIG. 1) and the Y-axis direction (left-right direction in FIG. 1). It has been. Further, in order to perform laser processing of the workpiece W, the upper frame 3U is provided with a slider 15 having a laser processing head 13 that can be moved up and down so as to be movable in the Y-axis direction.

  With the above-described configuration, laser cutting and pressing with the punch P and die D (including punching and coining) are performed on the workpiece W that is moved and positioned in the X and Y axial directions by the workpiece movement positioning device 11. Processing).

  For example, as shown in FIG. 2A, for example, a rectangular workpiece 15 having a rectangular hole 15H therein is cut and separated from the plate-shaped workpiece W as follows. It is. That is, first, using the laser processing head 13, as shown in FIG. 2B, laser cutting is performed over a desired range along the contours of the processed product 15 and the hole 15H to process the slits 17A and 17B. I do.

  Next, the workpiece W is positioned at the punching processing position, and as shown in FIG. 2C, pressing is performed at a plurality of pressure processing positions 19A, 19B, and 19C on the workpiece W side close to the slit 17A. . Similarly, pressing or punching is performed at the pressure processing position 21A in the scrap portion 21 that becomes scrap when the hole 15H is formed. In this case, there are a plurality of pressure processing positions 21A, which may be positions shifted in the horizontal direction and / or the vertical direction in FIG. In the following description, the processing at the pressurizing positions 19A, 19B, 19C and 21A is referred to as pressing portion forming processing including punching processing.

  That is, as schematically and conceptually shown in FIG. 3, when the pressing portion forming process 19 </ b> A is performed at a position close to the slits 17 </ b> A and 17 </ b> B and a distance closer than the thickness of the workpiece W. The workpiece W and the scrap portion 21 are escaped so as to cross the slits 17A and 17B. And the protrusion part 23 which protruded and deformed so that a slit may be crossed arises. The curved surface of the projecting portion 23 resulting from this escape comes into contact with the cut surface 15F of the workpiece 15 and constitutes a pressing portion that presses the cut surface of the workpiece 15. Therefore, by forming the protrusions 23 at a plurality of locations around the workpiece 15 and pressing the workpiece 15 from the periphery, the workpiece 15 is pressed and held by the workpiece W without dropping. At this time, indentations pressed by the pressing portions (protruding portions) 23 are generated at a plurality of locations on the cut surface that is the outer peripheral surface of the processed product 15.

  As described above, when the pressing part forming process is performed at a plurality of locations around the processed product 15 and the processed product 15 is pressed and held by the protrusion 23, the remaining contour portion 17C of the processed product 15 The workpiece 15 and the scrap 21 can be cut and separated from the workpiece W by performing the laser cutting process. At this time, the processed product 15 is pressed by a plurality of surrounding protrusions 23. Accordingly, when the workpiece W is unloaded from the laser / punch combined processing machine 1, the workpiece 15 is not dropped from the workpiece W.

  When removing the workpiece 15 from the workpiece W, the workpiece 15 can be easily removed from the workpiece W by lightly hitting the workpiece 15 with, for example, a hammer or applying vibration to the workpiece W. It is something that can be done.

  In addition, as a structure which forms the said protrusion part 23, as shown in FIG. 4, it can also form by pressing the recessed part 25 of an appropriate shape on one side of the upper surface or lower surface of the workpiece | work W, or upper and lower surfaces. Is possible.

  By the way, the present invention is not limited to the embodiment as described above, and can be implemented in other forms by appropriately modifying the embodiment. That is, when the processed product has a triangular shape, for example, it is desirable to form protrusions at three locations corresponding to each side. In addition, when the processed product has a circular shape or the like, it is desirable to form a protrusion at an opposing position with the center position (center of gravity position) in between. In this case, it is desirable to form the protruding portion 23 at a position where rotation is restricted about a straight line connecting the two protruding portions (for example, the pressing processing position 19C in FIG. 2C corresponds). It is. That is, in this case, the protrusions 23 are formed at three locations.

  By the way, the position where the protruding portion 23 is formed is the position where the processed product 15 does not move when the protruding portion 23 is formed and the processed product 15 is pressed, that is, the position adjacent to the remaining contour portion or the remaining contour. It is desirable that the position be opposed to the portion 17C.

  Further, in FIGS. 1C and 1D, the case where the processing positions 19 </ b> A and 19 </ b> B are respectively set at the opposed positions of the processed product 15 has been described, but the number of pressurizing positions is set to a larger desired number. It is something that can be done.

  Furthermore, it is also possible to alternately repeat slit processing by laser cutting processing and punching processing to perform pressing portion forming processing.

DESCRIPTION OF SYMBOLS 1 Laser punch compound processing machine 3 Frame 3U, 3L Upper and lower frame 5U, 5L Turret 7 Striker 9 Work table 11 Work movement positioning device 13 Laser processing head 15 Workpiece 15F Cutting surface 15H Hole 17A, 17B Slit 17C Remaining outline 19A, 19B, 19C Pressure processing position 21 Scrap part 21A Pressure processing position 23 Protruding part (escape, pressing part)
25 recess

Claims (7)

A cutting and separating method for cutting and separating a workpiece from a plate-shaped workpiece,
(A) a step of performing laser cutting in a desired range along the contour of the workpiece in order to cut and separate the workpiece from the plate-like workpiece;
(B) performing a pressing process at a plurality of locations on the workpiece at a position close to the slit formed by the laser cutting process, and projecting and forming a pressing portion that presses the cut surface of the workpiece across the slit;
(C) a step of performing laser cutting of the remaining contour portion of the workpiece when the cut surface of the workpiece is pressed and held by a plurality of pressing portions;
A method for cutting and separating a processed product, comprising:   2. The cut / separated processing method for a processed product according to claim 1, wherein a position where the pressing portion is formed is a position close to a remaining contour portion.   2. The cut / separated processing method for a processed product according to claim 1, wherein a position where the pressing portion is formed is a position opposed to each other with the processed product interposed therebetween.   2. The cut and separation processing method for a workpiece according to claim 1, wherein the position where the pressing portion is formed is a position where the workpiece is restricted from rotating about a straight line connecting the pressing portions formed at two locations. A method for cutting and separating a processed product.   5. The cut / separation method for a processed product according to claim 1, wherein the pressing portion presses and holds the cut surface of the processed product with a curved surface. Processing method.   6. The method for cutting and separating a workpiece according to claim 1, wherein the workpiece is cut and separated by a laser / punch combined processing machine having a laser cutting function and a punch press function. A method for cutting and separating a processed product.   A processed product cut and separated from a plate-shaped workpiece by laser cutting processing, wherein the processed product is provided with indentations pressed by a pressing portion at a plurality of locations on a cut surface which is an outer peripheral surface of the processed product. Goods.

Images