JP2011230167A - Machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machining device capable of being miniaturized and enhancing an operating ratio of a line.SOLUTION: The machining device 10, which applies curl molding and seam molding to a workpiece W from the same direction, includes: an installation base 30 which is provided with a mold M for placing the workpiece W; a support 32 which is erected on the installation base 30 and elongated in one direction; a machining head 34 which is provided on the support 32; and a hoisting/lowering mechanism 36 for hoisting/lowering the machining head 34. The machining head 34 comprises a curling punch 58 for applying the curl molding to the workpiece W, a seaming punch 62 which is positioned above and ahead of the curling punch 58 and which applies the seam molding to the workpiece W, and a common base 48 which is provided with the curling punch 58 and the seaming punch 62.

Description

  The present invention relates to a machining apparatus that performs two types of machining on a workpiece from the same direction.

  Conventionally, as a method of fastening the edges of a plurality of workpieces, the end of each workpiece is formed into a substantially arc-shaped cross section with a winding punch (curled), and then the arc-shaped portion is formed with a main bending punch. A method of deforming flatly (performing seam forming) is known (see Non-Patent Document 1).

  In FIGS. 2 and 4 of Non-Patent Document 1, curl molding is first performed with a winding punch in a state where the work is placed on a winding mold (curling mold), and then curl molding is performed. It is described that curl molding and seam molding are performed from the same direction by replacing the performed workpiece with a bending mold (seam molding mold) and performing seam molding with a bending punch.

Japan Society for Invention and Innovation Technical Report No. 2004-502296

  Non-Patent Document 1 described above requires the preparation of a press machine (pressure source) for driving a winding punch and a pressure source for driving a bending punch, and two types such as a winding die and a bending die. Since it is necessary to prepare a mold, the apparatus becomes large.

  In addition, since the mold exchange setup is required every time the workpiece shape changes, the operation rate of the line may decrease.

  The present invention has been made in consideration of such a problem, and an object of the present invention is to provide a processing apparatus capable of reducing the size of the apparatus and improving the operation rate of the line.

  The processing apparatus according to the present invention is a processing apparatus that performs two types of processing on a workpiece from the same direction, and includes a first processing unit that performs a first processing on the workpiece, and the first processing unit. A second processing means for performing a second processing on the workpiece, a common base provided with the first processing means and the second processing means, and the common base. And elevating means for elevating and lowering.

  According to such a configuration, after the workpiece is installed at a predetermined position, the common base is lowered by the elevating means, and the first machining is performed on the workpiece by the first machining means. By adjusting the relative position of the common base and the workpiece and lowering the common base by the lifting means, the second machining means can perform the second machining on the workpiece. That is, two types of processing can be performed from the same direction using one lifting means (pressure source). Further, since the first machining and the second machining can be switched only by adjusting the relative position between the workpiece and the common base, the molds for placing the workpiece are combined into one. be able to. Thereby, a processing apparatus can be reduced in size compared with the case where a workpiece | work is processed using two types of metal mold | dies and two pressurization sources. Furthermore, by combining the molds into one, there is no need to transfer the workpiece to another mold, so that the operating rate of the line can be improved.

  In the processing apparatus according to the present invention, since the second processing means is positioned above and ahead of the first processing means, when the second processing is performed on the workpiece, the first processing means is the workpiece or Never hit the mold.

  A first pad that holds the workpiece during the first machining; a second pad that is positioned above and forward of the first pad and that holds the workpiece during the second machining; and the first pad The second pad may be provided, and a common slider provided to be slidable in the ascending / descending direction of the common base with respect to the common base.

  Then, since the first pad and the second pad are provided on a common base, an elevating means can be used as a pressure source for the first pad and the second pad. In other words, the pressurizing sources for the first processing means and the second processing means and the pressurizing sources for the first pad and the second pad can be shared by the lifting means. Thereby, a processing apparatus can be further reduced in size. In addition, since the first pad and the second pad are provided on a common slider, the processing apparatus has a simpler configuration than the case where the first pad and the second pad are provided on separate sliders. .

  Furthermore, you may further provide the drive means which drives the said common base to the front-back direction. Thereby, after performing the 1st process, the relative position of a workpiece | work and a common base can be easily adjusted by driving a common base with a drive means.

  According to the present invention, the first processing means and the second processing means are provided on a common base, and the common base is lifted / lowered by the lifting / lowering means. Therefore, two types using one lifting / lowering means (pressure source) are provided. Can be processed from the same direction. Further, since the first machining and the second machining can be switched only by adjusting the relative position between the workpiece and the common base, the molds for placing the workpiece are combined into one. be able to. Thereby, compared with the case where a workpiece | work is processed using two types of metal mold | dies and two pressurization sources, an apparatus can be reduced in size. Furthermore, by combining the molds into one, there is no need to transfer the workpiece to another mold, so that the operating rate of the line can be improved.

It is a perspective view of the processing apparatus which concerns on this embodiment. It is a partial exploded perspective view of a processing head. It is a perspective view which shows the state which assembled the process head of FIG. It is the flowchart which showed the procedure which winds the edge part of a workpiece | work using the processing apparatus which concerns on this embodiment. It is a side view which shows the state which stopped the process head in the initial position. It is a side view which shows the state which is performing the curl molding. It is an expanded sectional view which shows the state which is performing the said curl molding. It is a side view which shows the state which retracted the processing apparatus main body. It is a side view which shows the state which is performing seam shaping | molding. It is an expanded sectional view which shows the state which is performing the said seam shaping | molding.

  Hereinafter, a processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  The processing apparatus which concerns on this embodiment is an apparatus for performing a winding process with respect to the bonnet, trunk, and door edge part of a motor vehicle, for example.

  Specifically, the processing apparatus includes a curl forming that forms an edge portion of two stacked plate members (workpieces) into a substantially circular cross section, and a seam that flatly forms a curled portion of the work piece. It is an apparatus that performs molding from the same direction.

  As shown in FIG. 1, the processing apparatus 10 has a mounting table 12 mounted on a floor surface of a factory or the like, a processing apparatus main body 14 provided on the upper surface of the mounting table 12, and the processing apparatus main body 14 in one direction ( A moving mechanism 16 that moves in the X direction) and a control unit 18 are provided.

  The moving mechanism 16 includes a pair of first guide rails 20 and 20 extending in the X direction, a plurality of first sliders 22 for guiding the processing apparatus main body 14 along the first guide rails 20 and 20, and a first guide rail. 20, a first ball screw shaft 24 that extends between the first ball screw shaft 24 and extends in the X direction; a first nut 26 that is provided in the processing apparatus main body 14 and is screwed into the first ball screw shaft 24; And a driving motor 28 as a driving means for rotating the shaft 24.

  The processing apparatus main body 14 includes an installation base 30 on which a mold M (see FIG. 5) on which the workpiece W is placed, a support 32 that is erected on the installation base 30 and extends in one direction (Y direction), and a support The machining head 34 is provided with a machining head 34 and a lifting mechanism 36 as a lifting means for lifting the machining head 34. Note that the plurality of first sliders 22 and the first nuts 26 described above are fixed to the installation base 30.

  As shown in FIG. 5, as the workpiece W, an outer panel 100 and an inner panel 102 made of a metal material punched into a predetermined shape are used. The work W has a flange 104 formed by bending an edge of the work W at a predetermined angle. The bending angle of the flange 104 can be set arbitrarily, but is set to 90 degrees in this embodiment.

  In the following description, the outer panel 100 and the inner panel 102 may be collectively referred to as a workpiece W. In addition, the mold M is supported by the mounting table 12 so as to be movable relative to the installation table 30.

  As shown in FIG. 1, the elevating mechanism 36 includes a second guide rail 38 that is provided on the support column 32 and extends in the Y direction, and a second slider 40 that guides the machining head 34 along the second guide rail 38. A second ball screw shaft 42 extending in the Y direction and positioned on the opposite side of the machining head 34 so as to sandwich the column 32, a second nut 44 screwed into the second ball screw shaft 42, and a second ball screw An elevating motor 46 that rotates the shaft 42 is provided.

  In the following description, the direction in which the machining head 34 is located is the front, the direction in which the second ball screw shaft 42 is located is the rear, the direction in which the installation base 30 is located is the downward, downward opposite direction when viewed from the support column 32. May be referred to as “upper” respectively. In the present embodiment, the lower part is a vertically lower part.

  As shown in FIGS. 1 to 3, the processing head 34 includes a base 48 to which the second slider 40 and the second nut 44 are fixed, and a processing tool 50 provided on the base 48 for processing the workpiece W. A holding mechanism 52 that is provided on the base 48 and holds the workpiece W is provided.

  As shown in FIG. 2, the base 48 includes a base body 54 formed in a plate shape, and an overhanging portion 56 that projects from a substantially central front surface of the base body 54.

  The processing tool 50 includes a curl punch 58 as a first processing means provided on the lower front surface of the overhanging portion 56 and capable of curling with respect to the workpiece W, and an intermediate member provided on a substantially central front surface of the overhanging portion 56. 60 and a seam punch 62 as second processing means provided on the front surface of the intermediate member 60 and capable of seam forming with respect to the workpiece W.

  As a result, the seam punch 62 is positioned above and forward of the curl punch 58. Further, the curl punch 58 and the seam punch 62 are provided on the common base 48.

  The curl punch 58 and the seam punch 62 are set so that the lengths of the base body 54 in the width direction (Z direction) are substantially the same. Further, the curl punch 58 is formed with a curl forming blade 58a that contacts the workpiece W, and the seam punch 62 is formed with a seam forming blade 62a that contacts the workpiece W.

  The holding mechanism 52 connects the first pad 64 that holds the work W when performing curl forming, the second pad 66 that holds the work W when performing seam forming, and the first pad 64 and the second pad 66. A pair of connecting members 68, 68, a slide mechanism 70 provided on the overhanging portion 56 to support the connecting members 68, 68 slidably in the Y direction, and a pressing mechanism 72 provided above the overhanging portion 56 Is included.

  The length of the first pad 64 in the Z direction is set to substantially match the length of the curl forming blade 58a in the Z direction, and the length of the second pad 66 in the Z direction is the Z length of the seam forming blade 62a. It is set to approximately match the length of the direction. Thereby, when processing the workpiece W with the curl punch 58 or the seam punch 62, the workpiece W can be held in a well-balanced manner.

  The connecting members 68 and 68 are formed in a plate shape, and include a lower portion 68a to which the first pad 64 is attached, an intermediate portion 68b that extends forward from the lower portion 68a and to which the second pad 66 is attached, and an intermediate portion. And an upper portion 68c extending forward from 68b. As a result, the second pad 66 is positioned forward and upward from the first pad 64.

  The slide mechanism 70 is provided on both side surfaces of the projecting portion 56 and extends in the Y direction, and the third guide rails 74 and 74 guide the connecting members 68 and 68 along the third guide rails 74 and 74. Sliders 76 and 76. The third sliders 76 and 76 are fixed to the inner surfaces of the connecting members 68 and 68. That is, as can be understood from FIG. 3, the first pad 64 and the second pad 66 are arranged so as to cover the processing tool 50 from the front surface.

  Further, as shown in FIG. 3, the first pad 64 is disposed in front of the curl forming blade 58a, and the second pad 66 is disposed in front of the seam forming blade 62a.

  As shown in FIGS. 2 and 3, the pressing mechanism 72 is provided on the upper front surface of the base body 54 and on the upper surface of the support plate 78, and a gas such as nitrogen is injected therein. A plurality (four in the figure) of cylinders 80, piston rods 82 (see FIG. 2) slidably inserted into the respective cylinders 80, and provided on upper upper surfaces of the connecting members 68 and 68, project from the cylinders 80. And a plurality of abutting members 84 with which the tip ends of the piston rods 82 abut. That is, the pressing mechanism 72 has a configuration in which a so-called gas spring is provided on the support plate 78.

  As shown in FIG. 1, the control unit 18 includes a drive motor control unit 86 that controls the drive motor 28, a lift motor control unit 88 that controls the lift motor 46, and a storage unit 90. Yes.

  The storage unit 90 stores longitudinal movement distance data, curl forming descent distance data, and seam forming descent distance data.

  As the longitudinal movement distance data, an offset distance in the X direction between the curl forming blade 58a and the seam forming blade 62a is set.

  As the curl forming descent distance data, a value obtained by adding the machining allowance to the distance between the curl forming blade 58a and the workpiece W when the machining head 34 is stopped at the initial position (the state shown in FIG. 1) is set. Yes.

  As the seam forming descent distance data, a value obtained by adding the machining allowance to the interval between the seam forming blade 62a and the workpiece W in a state where the machining head 34 is stopped at the initial position is set.

  A procedure for winding and tightening the edge portion of the workpiece W using the processing apparatus 10 configured as described above will be described with reference to FIGS.

  First, as shown in FIG. 5, the inner panel 102 is placed on the outer panel 100 so as to overlap the mold M provided on the installation table 30 using a robot (not shown) (step S1 in FIG. 4). . At this time, the robot places the workpiece W such that the bent portion of the flange 104 is positioned at the end of the mold M. Then, the drive motor control unit 86 controls the drive motor 28 to move the processing apparatus main body 14, thereby arranging the curl forming blade 58 a above the edge (flange 104) of the workpiece W.

  Next, the elevating motor control unit 88 controls the elevating motor 46 to lower the machining head 34 based on the curl forming descent distance data (step S2). At this time, since the machining head 34 is guided along the second guide rail 38 by the second slider 40, the machining head 34 moves down smoothly.

  When the machining head 34 is lowered, the first pad 64 comes into contact with the upper surface of the inner panel 102 (the flat portion of the inner panel 102), and then the inner panel 102 is pressed downward by the pressure of the gas in the cylinder 80. . As a result, the work W sandwiched between the first pad 64 and the mold M is held (step S3).

  Subsequently, as shown in FIG. 6, when the machining head 34 is lowered by the amount of descent distance for curl forming, curling is performed on the edge of the workpiece W by the curl punch 58 (step S4). Thereby, the edge part of the workpiece | work W comes to be formed in a cross-sectional substantially circular shape (refer FIG. 7).

  Thereafter, the lifting motor control unit 88 controls the lifting motor 46 to raise the machining head 34 based on the curl forming descent distance data and return the machining head 34 to the initial position (step S5). At this time, the holding of the workpiece W by the first pad 64 is released.

  As shown in FIG. 8, after the holding of the workpiece W by the first pad 64 is released, the drive motor control unit 86 controls the drive motor 28 to move the processing apparatus main body 14 based on the longitudinal movement distance data. Retreat (step S6). As a result, the seam forming blade 62a is positioned above the portion of the workpiece W where the curl forming has been performed.

  Next, the elevating motor control unit 88 controls the elevating motor 46 to lower the machining head 34 based on the seam forming descent distance data (step S7).

  When the machining head 34 is lowered, the second pad 66 comes into contact with the upper surface of the inner panel 102, and then the inner panel 102 is pressed downward by the gas pressure in the cylinder 80. As a result, the workpiece W sandwiched between the second pad 66 and the mold M is held (step S8). At this time, since the first pad 64 and the curl punch 58 are located behind the seam punch 62, they do not hit the workpiece W or the mold M.

  Subsequently, as shown in FIG. 9, when the machining head 34 is lowered by the seam forming descent distance data, the seam punch 62 performs seam forming on the portion of the workpiece W where the curl forming has been performed (step S9). ). Thereby, the site | part in which the curl shaping | molding was performed among the workpiece | work W comes to be shape | molded flatly (refer FIG. 10).

  Thereafter, the elevating motor control unit 88 controls the elevating motor 46 to raise the machining head 34 based on the seam forming descent distance data and return it to the initial position (step S10). At this time, the holding of the workpiece W by the second pad 66 is released.

  Thereafter, the workpiece W is removed from the mold M by the robot (step S11). At this stage, the procedure for winding the workpiece W according to the present embodiment is completed.

  According to the processing apparatus 10 according to the present embodiment, since the curl punch 58 and the seam punch 62 are provided on the common base 48, only one raising / lowering motor (pressure source) 46 for raising and lowering the processing head 34 is provided. Thus, two types of processing (curl molding and seam molding) can be performed on the workpiece W from the same direction.

  In the processing apparatus 10 according to the present embodiment, since the processing head 34 is moved with respect to the workpiece W by the driving motor 28, the curl punch 58 and the seam punch 62 can be easily switched, and The molds M can be combined into one. Thereby, compared with the case where the workpiece | work W is processed using two types of metal mold | dies and two pressurization sources, an apparatus can be reduced in size. Furthermore, by combining the molds M into one, there is no need to replace the workpiece with another mold, and therefore the line operating rate can be improved.

  In the processing apparatus 10 according to the present embodiment, since the first pad 64 and the second pad 66 are provided on the common base 48, the lifting motor 46 is used as a pressure source for the first pad 64 and the second pad 66. be able to. In other words, the pressurization source for the curl punch 58 and the seam punch 62 and the pressurization source for the first pad 64 and the second pad 66 can be shared by the lifting / lowering motor 46. Thereby, the processing apparatus 10 can be further reduced in size.

  Further, since the first pad 64 and the second pad 66 are connected by connecting members 68 and 68 provided with a pressing mechanism 72, and the connecting members 68 and 68 are provided on the third sliders 76 and 76, the pressing mechanism. 72 can be combined into one. That is, it is not necessary to prepare a pressing mechanism for the first pad 64 and a pressing mechanism for the second pad 66 separately. Thereby, the processing apparatus 10 becomes a simple structure.

  The present embodiment is not limited to the configuration described above. For example, in the above embodiment, a so-called gas spring is used as the pressing mechanism. For example, the first pad and the second pad are provided by interposing an elastic member such as a compression spring between the support plate and the connecting member. You may press downward.

  Further, the switching mechanism between the curl punch and the seam punch is not limited to the configuration in which the processing apparatus main body is moved in the front-rear direction by the drive motor. In short, it is only necessary that the workpiece and the machining head can be moved relative to each other. Therefore, the mold may be movable in the front-rear direction while the processing apparatus main body is fixed to the mounting table.

  The present invention is not limited to the above-described embodiment, and can be implemented in various forms. For example, the processing apparatus according to the present invention may be used in a state where the processing apparatus of the above-described embodiment is tilted by a predetermined angle (for example, 90 degrees) in the front-rear direction.

DESCRIPTION OF SYMBOLS 10 ... Processing apparatus 12 ... Mounting stand 14 ... Processing apparatus main body 16 ... Movement mechanism 28 ... Drive motor 30 ... Installation stand 32 ... Supporting column 34 ... Processing head 36 ... Lifting mechanism 46 ... Lifting motor 48 ... Base 58 ... Curl punch 62 ... Seam punch 64 ... First pad 66 ... Second pad 68 ... Connecting member 70 ... Slide mechanism W ... Work M ... Mold

Claims (3)

A processing apparatus that performs two types of processing on a workpiece from the same direction,
First machining means for performing first machining on the workpiece;
Second machining means that is positioned forward and above the first machining means and that performs a second machining on the workpiece;
A common base on which the first processing means and the second processing means are provided;
And a driving means for driving the common base. The processing apparatus according to claim 1,
A first pad for holding the workpiece during the first machining;
A second pad that is positioned forward and above the first pad and that holds the workpiece during the second machining;
A processing apparatus comprising: a common slider provided with the first pad and the second pad and slidable in the ascending / descending direction of the common base with respect to the common base. The processing apparatus according to claim 1 or 2,
A processing apparatus, further comprising a driving means for driving the common base in the front-rear direction.

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