JP6489626B1 - Control method of cutting device - Google Patents

Abstract

The present invention provides a control method of a cutting device capable of forming an inclined curved surface on a processing material using a cutting device having a flat blade-like cutting blade.
A control method for forming an inclined curved surface on a workpiece by a cutting blade S in a cutting device having a flat blade-like cutting blade S, wherein an α (inclination) direction moving means 7 is driven, The cutting blade tilting step is performed to tilt the cutting blade S in the tilting direction along the sloping curved surface, and then the X, Y direction moving means 4 and the θ direction moving means 6 are driven while driving the vibrating means 8 for cutting It is characterized in that an inclined curved surface forming step is performed to move the cutting blade S so that the extending surface of the cutting blade S follows the inclined curved surface at the cutting edge of the blade S.
[Selected figure] Figure 2

Description

  The present invention relates to a control method of a cutting device for forming an inclined curved surface on a workpiece in a cutting device having a cutting blade.

  The applicant of the present invention, as shown in Patent Document 1, proposes a cutting device capable of forming a V-groove in a workpiece using a flat blade-like cutting blade. In this cutting device, it is possible to incline the cutting blade at an arbitrary angle with respect to the thickness direction of the workpiece. Therefore, in the conventional device, the two inclined surfaces of the V-groove can be formed only at the same angle with respect to the thickness direction, but in this device, the angles of the two inclined surfaces are different with respect to the thickness direction. V-grooves can also be formed.

JP, 2014-237215, A

  By the way, the V-groove disclosed in Patent Document 1 is such that the inclined surface forming the V-groove is flat. On the other hand, there is a demand for making the inclined surface formed in the work material into a curved surface, and the correspondence has been required.

  This invention makes it a subject to implement | achieve such a request, and provides the technique which can form the inclined curved surface in a processed material using the cutting device which has a flat blade-like cutting blade. The purpose is to

  The present invention relates to a cutting device having a flat blade-like cutting blade for cutting a workpiece, and a control method for forming an inclined curved surface on the workpiece with the cutting blade, wherein the cutting device is the workpiece. And a base having a mounting surface parallel to the XY plane in the XYZ orthogonal coordinate system, and X capable of moving the cutting blade in the X-axis direction and the Y-axis direction with respect to the base Y-direction moving means, Z-direction moving means provided on the X, Y-direction moving means and capable of moving the cutting blade in the Z-axis direction, and Z-direction moving means provided on the cutting blade Direction moving means, and the α direction moving means provided on the θ direction moving means and capable of holding the cutting blade and rotating the cutting blade about an α axis orthogonal to the Z axis, and the cutting The blade is vibrated in the longitudinal direction of the cutting blade And driving the α-direction moving means to tilt the cutting blade in the inclination direction along the inclined curved surface, and performing the cutting blade tilting step, and then driving the vibration means. The X and Y direction moving means and the θ direction moving means are driven while moving the cutting blade so that the extending surface of the cutting blade follows the inclined curved surface at the cutting edge of the cutting blade. It is a control method of a cutting device which performs an inclined curved surface formation step.

  Further, while driving the vibration means between the cutting blade inclining step and the inclined curved surface forming step, the cutting blade is driven in the inclining direction by driving the X, Y direction moving means and the Z direction moving means. Preferably, a cutting blade invading step is performed which is moved along to move into the interior of the workpiece.

  Further, the cutting device is replaceable as a long cutting blade or a short cutting blade having different lengths to the cutting point as the cutting blade, and in the cutting blade entering step, in a state of being replaced with the long cutting blade. The position of the cutting tip of the long cutting blade intruding into the inside of the processing material and the position of the cutting tip of the short cutting blade intruding into the inside of the processing material in the state exchanged with the short cutting blade become identical Preferably, the X and Y direction moving means and the Z direction moving means are driven.

  In the control method of the cutting device according to the present invention, by performing the cutting blade tilting step, the cutting blade is tilted in the tilting direction along the sloped surface to be formed, and then the cutting surface is formed. The cutting blade is moved so that the extending surface of the cutting blade follows the inclined curved surface at the cutting edge. That is, since the cutting edge of the cutting blade inclined with respect to the thickness direction of the workpiece is moved in the tangential direction of the inclined curved surface, the inclined curved surface can be formed on the workpiece.

  Moreover, when performing a cutting blade entering step between the cutting blade inclining step and the inclined curved surface forming step, for example, when cutting out a block having an inclined curved surface from the workpiece, it is necessary to move the cutting blade from one end of the workpiece to the other end Since it is sufficient to move the cutting blade around the inside of the workpiece so as to form a block, there is no case where the workpiece is cut excessively, and the workpiece is not wasted.

  Moreover, it becomes possible to cut | disconnect the processing material of various thickness by comprising so that a cutting blade can be replaced | exchanged to what differs in length. Here, when it is possible to replace as a cutting blade with a long cutting blade or a short cutting blade having different lengths to the cutting tip, the cutting tip of the long cutting blade and the cutting tip of the long cutting blade can be used simply by configuring so as to be able to hold any cutting blade. Since the position of the cutting tip of the short cutting blade is different, the cutting depth to the workpiece will also be different. For this reason, when making such a long cutting blade and a short cutting blade exchangeable, in the cutting blade entering step, the cutting tip of the long cutting blade and the cutting tip of the short cutting blade which intrude into the inside of the workpiece. It is preferable to drive the X and Y direction moving means and the Z direction moving means so that the same position is obtained, whereby the same inclined curved surface is used even when using a long cutting blade or using a short cutting blade. Can be formed.

FIG. 1 is a plan view schematically illustrating an embodiment of a cutting device according to the present invention. It is a side view which shows the head part periphery in embodiment of FIG. It is a front view of the head part in embodiment of FIG. It is a side view of the head part in embodiment of FIG. It is the elements on larger scale of the cutting blade in embodiment of FIG. 1, Comprising: (a) is a front view, (b) is a side view. It is the perspective view which showed the condition which forms a truncated cone-like block from a workpiece by the cutting device of FIG. It is a figure for demonstrating the condition of FIG. 6 in more detail, Comprising: (a) is a top view, (b) is sectional drawing in a side view. It is a figure explaining the position of the (theta) rotation axis at the time of using the long cutting blade from which the length to a cutting tip differs, and a short cutting blade. It is a figure explaining the condition which forms the block which has a several inclined plane from a workpiece by the cutting device of FIG.

  Hereinafter, in describing a control method of a cutting device according to the present invention, an embodiment of the cutting device will be described first with reference to the drawings.

  The code | symbol 1 in FIG. 1 has shown one Embodiment of the cutting device. The cutting device 1 of the present embodiment includes a base 2 and a head 3. The base 2 is for mounting a processing material indicated by a symbol W. In addition, although the processed material W is a flat thing which becomes a rectangle in planar view in the example of illustration, a shape is not limited to this. Moreover, the material includes various products such as paper products such as cardboard, a thin plate-like synthetic resin plate or metal plate, polyethylene having a relatively large thickness, and a foam material. The head 3 holds a cutting blade S for cutting the workpiece W as shown in FIGS.

  In the base 2, the mounting surface on which the processing material W is mounted extends parallel to the XY plane in the XYZ orthogonal coordinate system. In the present embodiment, in the state where the cutting device 1 is installed on the floor surface, the mounting surface of the base 2 extends in the horizontal direction. Although not shown, suction holes for suctioning and holding the workpiece W by negative pressure are provided in the mounting surface of the base 2. Further, the base 2 is provided with a power supply for driving various means provided in the cutting device 1 and an incidental facility for connecting to an air source or the like.

  Further, between the base 2 and the head 3, an X, Y direction moving means 4 and a Z direction moving means 5 are provided, whereby the head 3 can move in the X axis direction, Y axis direction, It can move in the Z-axis direction.

  The X- and Y-direction moving means 4 of the present embodiment extends in the X-axis direction and is spaced apart from the base 2 in the Y-axis direction, and a pair of X-axis rails (not shown) And an Y-axis frame 4a held by the X-axis nut, and extending in the Y-axis direction as shown in FIG. 2 and in the Z-axis direction with respect to the Y-axis frame 4a And a Y-axis nut 4c sliding on the Y-axis rail 4b, and a Y-axis movement base 4d held by the Y-axis nut 4c. Although detailed description is omitted, the X and Y direction moving means 4 includes means for moving the Y axis frame 4a and the Y axis movement base 4d, and such as, for example, a motor In addition to using (servo motor, stepping motor, etc.), a mechanism using a timing belt and a pulley, a mechanism using a ball screw, and a mechanism using a rack and a pinion can be mentioned.

  The Z-direction moving means 5 slides the Z-axis rail 5a and a pair of Z-axis rails 5a which extend in the Z-axis direction and are spaced from the Y-axis movement base 4d in the Y-axis direction. It comprises Z-axis nut 5b and Z-axis movement base 5c held by Z-axis nut 5b. The Z-direction moving means 5 further includes a Z-axis motor 5d and a ball screw 5e for moving the Z-axis movement base 5c by rotation of the Z-axis motor 5d.

  The head 3 has a θ direction moving means 6 capable of rotating the cutting blade S around the Z axis, and an α direction moving means 7 rotatable about the α axis (see FIG. 6) orthogonal to the Z axis. The cutting blade S is provided with vibration means 8 for vibrating it in the longitudinal direction.

  The θ direction moving means 6 includes a θ rotation shaft 6b rotatably supported by a pair of bearings 6a provided at intervals in the Z axis direction, a right θ axis base 6c held by the θ rotation shaft 6b, and a left θ And an axis base 6d (see FIG. 3). Further, as shown in FIG. 2, the θ-direction moving means 6 includes a θ-axis pulley 6e attached to the θ-rotation shaft 6b, and a θ-axis motor 6f for rotating the θ-axis pulley 6e via a timing belt.

  Furthermore, as shown in FIG. 3, the θ direction moving means 6 is provided coaxially with the θ rotation shaft 6b, and engaged with the θ axis holder 6g having a spiral groove on the outer peripheral surface and the spiral groove of the θ axis holder 6g. Z-axis block 6h provided with movable projections and movable in the Z-axis direction, and the θ-axis capable of guiding the rotational position of θ-rotational axis 6b by detecting the position of Z-axis block 6h in the Z-axis direction And a sensor 6j. The means for guiding the rotational position of the θ rotation shaft 6b about the θ axis is not limited to the above-described means, for example, using the servomotor as the θ axis motor 6f to derive from the number of pulses applied to the servomotor Is also possible.

  The α direction moving means 7 is provided coaxially with the right α rotation shaft 7a rotatably supported by the right θ axis base 6c and the right α rotation shaft 7a as shown in FIG. The α-axis motor rotates the α-axis pulley 7c via the timing belt as shown in FIG. 2, as shown in FIG. 2, with the left α-rotation shaft 7b rotatably supported at 6d, the α-axis pulley 7c attached to the right α-rotation shaft 7a And 7d. Furthermore, as shown in FIG. 3, the α direction moving means 7 includes a spline case 7e located between the right α rotation shaft 7a and the left α rotation shaft 7b, and a spline shaft 7f provided to be able to advance and retract with respect to the spline case 7e. The holder 7g is provided at the tip of the spline shaft 7f and holds the cutting blade S.

  Further, as shown in FIG. 3, the α direction moving means 7 utilizes the notched shielding plate 7h attached to the left side α rotating shaft 7b and the notches of the notched shielding plate 7h to make the α of the left side α rotating shaft 7b. And an α-axis sensor 7 j for detecting the rotational position around the axis. That is, since the cutting blade S rotates around the α axis along with the left α rotating shaft 7b, the rotational position of the cutting blade S around the α axis can be detected by the α axis sensor 7j. When detecting the rotational position of the cutting blade S about the α axis, for example, it is possible to derive from the number of pulses applied to the servo motor using a servo motor as the α axis motor 7 d.

  As shown in FIG. 2, the vibration means 8 includes a crank 8a connected to the rear end of the spline shaft 7f, a shaft 8b rotatably supported by an eccentric cam for advancing and retracting the crank 8a, and a shaft 8b with an eccentric cam And a vibration applying motor 8d for rotating the vibration applying pulley 8c via a belt (timing belt). That is, when the shaft 8b with an eccentric cam rotates by the vibration applying motor 8d, the crank 8a vibrates with the amplitude of the eccentricity, thereby vibrating the spline shaft 7f to which the holder 7g is attached, so that it is held by the holder 7g The cutting blade S can be vibrated along the longitudinal direction.

  The cutting blade S has a flat blade shape as shown in FIGS. 2 to 5 and is provided removably with respect to the holder 7g. As shown in FIG. 5, at the side edge of the cutting blade S, a cutting edge S1 for cutting the workpiece W is provided. Further, the cutting device 1 of the present embodiment is a cutting blade S having a relatively long length from the portion held by the holder 7g to the cutting tip S2 of the tip (hereinafter referred to as a long cutting blade) Even short ones (hereinafter referred to as short cutting blades) can be attached. When attaching the cutting blade S to the holder 7g, for example, by providing positioning means between the holder 7g and the cutting blade S, the extension surface S3 of the cutting blade S is parallel to the α axis of the α direction moving means 7. I am trying to be

  In addition, the cutting device 1 controls the X, Y direction moving means 4, the Z direction moving means 5, the θ direction moving means 6, the α direction moving means 7, and the vibration means 8 as described above. Is equipped. The control board sends commands to the X- and Y-direction moving means 4, the Z-direction moving means 5, the θ-direction moving means 6, the α-direction moving means 7 and the vibrating means 8 to drive them individually or in conjunction. It can be done.

  Furthermore, as shown in FIG. 2, the cutting device 1 includes a processing material pressing means 9 for holding the processing material W when cutting the processing material W with the cutting blade S. The workpiece pressing means 9 of the present embodiment includes a pressing plate 9a provided in the vicinity of the cutting blade S, a guide 9b for supporting the pressing plate 9a movably in the Z-axis direction with respect to the head 3, and the pressing plate 9a. And an elastic body 9c for pressing the workpiece W.

  Next, a control method of the cutting device for forming the inclined curved surface on the workpiece W using the cutting device 1 having such a configuration will be described. Here, as shown in FIG. 6, the case where a frusto-conical block having a conical surface as an inclined curved surface is formed from a relatively thick work material W will be described.

  First, the cutting blade S is moved to a predetermined position by driving the X, Y direction moving means 4. At this time, the α-direction moving means 7 is also driven to rotate the cutting blade S around the α-axis, and as shown in FIG. 7B, the cutting blade S is inclined along the conical surface (direction along the generatrix) Direct (cutting blade tilting step).

  Next, the vibrating means 8 is driven to vibrate the cutting blade S in the longitudinal direction, and the X and Y direction moving means 4 and the Z direction moving means 5 are driven to incline the cutting blade S along the conical surface. It is moved along and penetrates into the inside of the workpiece W to a predetermined depth (cutting blade penetration step). Here, the back surface of the workpiece W is set to reach. A lower plate or the like may be disposed on the back of the workpiece W in order to avoid contact between the cutting blade S and the base 2. In addition, since the head 3 approaches the processing material W by the drive of the Z direction moving means 5, the lifting of the processing material W can be prevented by the pressing plate 9a.

  Thereafter, while driving the vibration means 8, the X, Y direction moving means 4 is driven to move the cutting blade S so as to draw a circle in a plan view as shown in FIG. 7A. Further, at this time, the θ direction moving means 6 is also driven together, and the cutting blade S is rotated around the θ rotation shaft 6b so that the extending surface S3 of the cutting blade S follows the conical surface at the cutting edge S1 of the cutting blade S Let it be (inclination curved surface formation step). That is, the cutting blade S moves with the cutting edge S1 oriented in the tangential direction of the conical surface.

  Then, by moving the cutting blade S around, a truncated cone-shaped block can be formed from the workpiece W. As shown in FIG. 7A, the cutting blade S moves around the θ rotation shaft 6b by the θ direction moving means 6 in accordance with movement of the cutting blade S by the drive of the X, Y direction moving means 4. Then, after the cutting blade S makes a round, the cutting blade S intruded into the interior of the workpiece W by driving the X and Y direction moving means 4 and the Z direction moving means 5 while driving the vibrating means 8. Is withdrawn along the inclination direction along the conical surface and pulled out of the workpiece W to complete the cutting operation.

  In the above description, the cutting blade entering step is performed between the cutting blade tilting step and the inclined curved surface forming step, but it is also possible to omit this. In this case, the cutting blade S inclined at a predetermined angle by the cutting blade inclination step may be made to enter from the outside in the length direction (width direction) of the workpiece W, and the above-described inclined curved surface forming step may be performed. In addition, since the site | part cut | disconnected by the processing material W becomes only a truncated cone-shaped block when performing a cutting blade penetration | invasion step, the processing material W does not become wasted.

  The cutting blade entering step is performed in consideration of the position of the cutting edge S2 of the cutting blade S. For example, when using a long cutting blade having a long length as shown in FIG. 8 (a) and using a short cutting blade having a short length as shown in FIG. 8 (b) as the cutting blade S, The position of the cutting edge S2 is different from the θ rotation axis 6b. For this reason, in the cutting apparatus 1 of this embodiment, the type and length of the cutting blade S to be used can be input, and the length up to the cutting tip S2 can be grasped. And, in the cutting blade entering step, even if it is a long cutting blade, it is a short cutting blade by changing the position of the θ rotation shaft 6b between the long cutting blade and the short cutting blade in consideration of the position of the cutting edge S2. The X and Y direction moving means 4 and the Z direction moving means 5 are driven so that the position of the cutting edge S2 becomes the same. Thereby, the same conical surface can be formed even when using a long cutting blade or using a short cutting blade.

  In addition, although the control method demonstrated until now formed the inclined curved surface in the workpiece W, it is also possible to form the inclined plane using the cutting device 1 mentioned above. For example, when forming a block having a plurality of inclined planes as shown in FIG. 9, the X, Y direction moving means 4 is driven to move the cutting blade S to a predetermined position, and the α direction moving means 7 is also The cutting blade S is driven to rotate around the α axis to orient the cutting blade S in the inclined direction along the inclined plane, and then the vibrating means 8 is driven to vibrate the cutting blade S in the longitudinal direction. , X and Y direction moving means 4 and Z direction moving means 5 to move the cutting blade S along the inclination direction along the inclined plane and to penetrate into the inside of the workpiece W to a predetermined depth, After that, the X- and Y-direction moving means 4 may be driven while the vibrating means 8 is driven to move the cutting blade S in a linear manner. As described above, in the cutting device 1, since it is possible to form an inclined plane on the workpiece W, it is possible to cut the workpiece W into various shapes by combining with the control method for forming the inclined curved surface described above. It is possible.

  The control method of the cutting device of the present invention is not limited to the embodiments described above, and includes those to which various modifications are added within the scope of the claims.

1: Cutting device 2: Base 3: Head 4: Y direction moving means 4a: Y axis frame 4b: Y axis rail 4c: Y axis nut 4d: Y axis moving base 5: Z direction moving means 5a: Z axis rail 5b: Z-axis nut 5c: Z-axis movement base 5d: Z-axis motor 5e: ball screw 6: θ-direction movement means 6a: bearing 6b: θ rotation axis 6c: right θ axis base 6d: left θ axis base 6e: θ axis pulley 6f : Θ axis motor 6g: θ axis holder 6h: Z axis block 6j: θ axis sensor 7: α direction moving means 7a: right side α rotating shaft 7b: left side α rotating shaft 7c: α axis pulley 7d: α axis motor 7e: spline Case 7f: Spline shaft 7g: Holder 7h: Notched shielding plate 7j: Alpha axis sensor 8: Vibration means 8a: Crank 8b: Shaft with eccentric cam 8c: Pulley for vibration application 8d: Motor for vibration application 9: processed material pressing means 9a: pressed plate 9b: guide 9c: elastic body S: cutting blade S1: cutting edge S2: cutting tip S3: extending surface W: processed material

Claims (3)

What is claimed is: 1. A control method for forming an inclined curved surface on a processing material by the cutting blade in a cutting device having a flat blade-like cutting blade for cutting a processing material,
The cutting device is
A base capable of mounting the workpiece and having a mounting surface parallel to an XY plane in an XYZ orthogonal coordinate system;
X, Y direction moving means capable of moving the cutting blade in the X axis direction and the Y axis direction with respect to the base;
Z direction moving means provided on the X, Y direction moving means and capable of moving the cutting blade in the Z axis direction;
? -Direction moving means provided on the Z-direction moving means and capable of rotating the cutting blade about the Z-axis;
An α-direction moving means provided in the θ-direction moving means, capable of holding the cutting blade and rotating the cutting blade about an α-axis orthogonal to the Z-axis;
Vibration means for vibrating the cutting blade in the longitudinal direction of the cutting blade,
Performing a cutting blade tilting step of driving the α direction moving means to tilt the cutting blade in a tilting direction along the sloping curved surface;
Then, while driving the vibration means, drive the X, Y direction moving means and the θ direction moving means so that the extending surface of the cutting blade follows the inclined curved surface at the cutting edge of the cutting blade. The control method of the cutting apparatus which performs the inclined curved surface formation step which moves the said cutting blade. Between the cutting blade inclining step and the inclining surface forming step,
A cutting blade which moves the cutting blade along the inclined direction to enter the inside of the processing material by driving the X and Y direction moving means and the Z direction moving means while driving the vibration means. The control method of the cutting apparatus according to claim 1, wherein the intrusion step is performed. The cutting device is replaceable as a long cutting blade or a short cutting blade having different lengths up to the cutting point, as the cutting blade,
In the cutting blade entering step, the position of the cutting tip of the long cutting blade that enters the inside of the workpiece in the state of being replaced with the long cutting blade and the inside of the workpiece in the state of being replaced with the short cutting blade 3. The control method of the cutting apparatus according to claim 2, wherein the X, Y direction moving means and the Z direction moving means are driven such that the positions of the cutting tips of the short cutting blades entering the same become the same.

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