JP2011183410A - Press device and finish working mold used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press device capable of performing press working and finish working continuously with the satisfactory efficiency. <P>SOLUTION: The finish working mold 18 of the press device 2 includes a finish working tool 60, a rotation mechanism for axially rotating the finish working tool 60 and a pressing mechanism for pressing the finish working tool 60 against a surface to be worked of a workpiece 20. The workpiece 20 is conveyed through press working regions 11a, 11b, 11c and a finish working region 11d. In accordance with a fall of a slide 4, the workpiece 20 is subjected to press working by press working molds 12, 14, 16 in the press working regions 11a, 11b, 11c, and the finish working tool 60 is axially rotated while being pressed against the surface to be worked of the workpiece 20 by the pressing mechanism in the finish working tool 60, and the surface to be worked of the workpiece 20 is subjected to the finish working in the finish working region 11d. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a press apparatus for performing required processing on a workpiece and a finishing mold used for the press device.

  For example, in a manufacturing process for manufacturing a workpiece such as a reflector for LED, a press device for pressing the workpiece and a lap polishing device for polishing the workpiece surface are used. In the press device, the workpiece is sequentially conveyed to a plurality of machining dies arranged in parallel on the conveyance path, and the workpiece is sequentially pressed by the plurality of machining dies (see, for example, Patent Document 1). In the lapping machine, the lapping abrasive is interposed between the lapping disk and the workpiece, and both are rotated while pressing the workpiece on the lapping disk, so that the workpiece surface and lapping disk lapping surface are rotated. Are slid against each other, and finishing is performed on the work surface of the workpiece by such sliding (see, for example, Patent Document 2).

JP-A-6-304690 Japanese Patent Laid-Open No. 5-104434

  However, the above-described workpiece manufacturing process has the following problems. When a workpiece is pressed by a press device, the workpiece after pressing must be temporarily stocked, and the stocked workpiece must be transported to a lapping machine. There is a problem that the processing standby time between the processing steps becomes long and the manufacturing efficiency is lowered. In addition, since a lapping device must be installed on the downstream side of the press device, there is a problem that the manufacturing equipment becomes large and the manufacturing cost increases.

  The objective of this invention is providing the press apparatus which can perform a press work and a finishing process continuously and efficiently.

  Another object of the present invention is to provide a press apparatus capable of performing finishing such as mirror finishing.

  Furthermore, the other object of this invention is to provide the finishing die which can be used suitably when performing a finishing process using a press apparatus.

The press device according to claim 1 of the present invention is disposed between a bolster, a slide supported so as to be reciprocally movable in a direction approaching and separating from the bolster, and the slide and the bolster. A press working mold and a finish working mold provided corresponding to the press working area and the finishing work area, respectively, and a transport mechanism for transporting a work through the press working area and the finishing work area,
The press working die includes an upper die attached to the slide and a lower die attached to the bolster, and the finishing die includes a finishing tool attached to the slide; A rotating mechanism for axially rotating the finishing tool or the workpiece, and a pressing mechanism for pressing the finishing tool against a work surface of the workpiece,
When the slide is lowered toward the bolster, the workpiece is pressed by the upper die and the lower die of the press die in the press working region, and in the finishing region. The finishing tool is pressed against the workpiece surface of the workpiece by the pressing mechanism, and the finishing tool or the workpiece is axially rotated by the rotating mechanism in this pressed state to the workpiece surface of the workpiece. It is characterized by finishing.

In the press device according to claim 2 of the present invention, the press working die forms a recess to be processed in the workpiece, and the finishing die finishes the inner surface of the recess to be processed. Configured to apply,
When the slide is lowered toward the bolster, the workpiece recess is formed in the workpiece by the upper die and the lower die of the press die in the press working region, and the finish working region. In the above, the finishing tool is pressed against the inner surface of the workpiece recess of the workpiece by the pressing mechanism, and the finishing tool or the workpiece is axially rotated by the rotating mechanism in this pressing state. A finishing process is performed on the inner surface of the recess to be processed.

  Further, in the press device according to claim 3 of the present invention, the processing portion of the finishing tool is provided with a plurality of processing surfaces at intervals in the circumferential direction, and each of the plurality of processing surfaces is A finishing portion and a curved portion provided at a downstream end portion of the finishing portion as viewed in a rotation direction of the finishing tool, and the finishing portion includes the workpiece to be processed. It has a shape corresponding to the shape of the inner surface of the recess, and the curved portion is configured so that the radius of curvature gradually decreases toward the rotation direction of the finishing tool or has a predetermined radius of curvature. Features.

According to a fourth aspect of the present invention, there is provided a press apparatus according to the present invention, wherein the bolster, a slide supported so as to reciprocate in a direction approaching and separating from the bolster, and the slide and the bolster are disposed. And a finishing mold provided corresponding to the finished finishing area,
The finishing tool includes a finishing tool attached to the slide, a rotating mechanism for rotating the finishing tool or the work, and a pressing mechanism for pressing the finishing tool against a work surface of the work. And a pressing mechanism of
When the slide is lowered toward the bolster, the finishing tool is pressed against the work surface of the workpiece by the pressing mechanism in the finishing region, and the finishing tool is pressed by the rotating mechanism in this pressed state. Alternatively, the workpiece is axially rotated to finish the workpiece surface of the workpiece.

  In the press device according to claim 5 of the present invention, the pressing mechanism is constituted by a biasing means, and the finishing tool is pressed against the work surface of the workpiece by the biasing action of the biasing means. It is characterized by.

Further, the finishing die according to claim 6 of the present invention is a finishing die for finishing the inner surface of the processed recess formed in the workpiece,
A finishing tool, a rotation mechanism for rotating the finishing tool axis, and a pressing mechanism for pressing the finishing tool against the inner surface of the processed recess,
When finishing the inner surface of the recess to be processed of the workpiece, the finishing tool is pressed against the inner surface of the recess to be processed by the pressing mechanism, and the finishing tool is pressed by the rotating mechanism in this pressed state. The shaft is rotated.

  According to the press device of the first aspect of the present invention, the press working area and the finishing work area are disposed between the slide and the bolster, and the press working mold is provided corresponding to the press working area and the finishing work area. In addition, in the press work area, the work is pressed by the press work mold, and in the finish work area, the work surface of the work is finished by the finish work mold. Processing is applied. Thereby, press work and finishing can be continuously performed on the work transported by the transport mechanism, the manufacturing efficiency can be increased, and the entire press apparatus can be downsized. In finishing, the finishing tool is pressed against the work surface of the workpiece by the pressing mechanism, and the finishing tool or the workpiece is axially rotated by the rotating mechanism in this pressed state. The minute irregularities present on the machined surface are crushed and plastically deformed, so that the finish of the workpiece surface can be effectively processed. For example, a mirror surface (a surface close to the mirror surface) can be formed on the workpiece surface using a press device. Finishing (including roughness) can be applied.

  According to the press device of the second aspect of the present invention, in the press working area, the work recess is formed in the work by the press working mold, and in the finishing work area, the finishing tool is provided by the pressing mechanism. Pressed against the inner surface of the work recess of the workpiece, and in this pressed state, the finishing tool or the workpiece is pivoted by the rotating mechanism, so that the inner surface of the work recess of the work formed by pressing is efficiently finished. For example, it can be conveniently applied as a processing press device such as a reflector of a lighting device.

  According to the press device of the third aspect of the present invention, the finishing tool is provided with a plurality of processing surfaces at intervals in the circumferential direction, and each of the plurality of processing surfaces is covered with a workpiece. Since the finishing portion has a shape corresponding to the shape of the inner surface of the processing recess, the contact area between each finishing portion of the finishing tool and the inner surface of the processing recess of the workpiece is reduced. Thereby, the load at the time of each finishing part of a finishing tool pressing the inner surface of the to-be-processed recessed part of a workpiece | work becomes large, and finishing can be performed effectively. Each of the plurality of machining surfaces has a curved portion provided at the downstream end of the finishing portion as viewed in the rotational direction of the finishing tool, and the curved portion faces the rotational direction of the finishing tool. Since the radius of curvature gradually decreases or has a predetermined radius of curvature, the edge of each machining surface does not bite into the inner surface of the machining recess, and each finished machining portion is processed into the machining recess of the workpiece. Can be effectively pressed against the inner surface.

  According to the press device according to claim 4 of the present invention, since the finishing die is provided corresponding to the finishing region, when the slide is lowered toward the bolster, the finishing tool is moved by the pressing mechanism. Is pressed against the work surface of the workpiece, and the rotating tool rotates the finishing tool or workpiece in this pressed state, so that the fine irregularities formed on the work surface of the workpiece are crushed by the finishing tool. Thus, it is plastically deformed, and the finishing process for the work surface of the workpiece can be effectively performed.

  According to the press device of the fifth aspect of the present invention, since the pressing mechanism is constituted by the biasing means, the finishing tool is applied to the work surface of the workpiece with an appropriate load by the biasing action of the biasing means. Can be pressed. As the biasing means, for example, an elastic biasing means such as a coil spring may be used, or a pneumatic cylinder mechanism or a hydraulic cylinder mechanism may be used.

  According to the finishing die of claim 6 of the present invention, the finishing tool is pressed against the inner surface of the workpiece recess by the pressing mechanism, and the finishing tool or the workpiece is rotated by the rotating mechanism in this pressed state. Since the shaft is rotated, the required finishing process can be efficiently performed on the inner surface of the concave portion to be processed of the workpiece. For example, a mirror surface (including surface roughness close to the mirror surface) is applied to the inner surface of the concave portion to be processed by using a press device. Finish can be applied.

It is the schematic which shows a part of press apparatus by one Embodiment of this invention. It is sectional drawing which shows the finishing metal mold | die in the press apparatus of FIG. 1 in the state before finishing. FIG. 3 is a cross-sectional view showing the finishing die of FIG. 2 in a state during finishing. It is sectional drawing of the finishing tool and workpiece | work by the AA line in FIG. It is a perspective view which shows the finishing tool in the finishing metal mold | die of FIG. It is a figure for demonstrating the press work by the 1st-3rd press work metal mold | die in the press apparatus of FIG. It is a perspective view which shows the finishing tool of the finishing die by other embodiment of this invention. It is sectional drawing which shows the state which inserted the finishing tool of FIG. 7 in the to-be-processed recessed part of a workpiece | work.

  Hereinafter, an embodiment of a press device according to the present invention and a finishing die used for the press device will be described with reference to the accompanying drawings. FIG. 1 is a schematic view showing a part of a press apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a finish mold in the press apparatus of FIG. 3 is a cross-sectional view showing the finishing die of FIG. 2 in a state during finishing, and FIG. 4 is a cross-sectional view of the finishing tool and workpiece along the line AA in FIG. FIG. 6 is a perspective view showing a finishing tool in the finishing die of FIG. 2, and FIG. 6 is a diagram for explaining pressing by the first to third pressing dies in the pressing device of FIG. .

  Referring to FIG. 1, a press device 2 according to the present embodiment includes a bolster 8 and a slide 4 that is supported so as to reciprocate in a direction in which the bolster 8 approaches and separates from the bolster 8. A plunger 6 is attached to the upper surface of the slide 4, and this plunger 6 is connected to a crankshaft via a connecting rod and a link (not shown). The crankshaft is rotationally driven by, for example, a servo motor (not shown). When the crankshaft is rotated, the rotational motion is converted into a linear motion by the connecting rod, whereby the slide 4 is reciprocated between the top dead center and the bottom dead center.

  Between the slide 4 and the bolster 8, there is provided a transport path 10 through which the workpiece 20 is transported. The transport path 10 is spaced apart in the transport direction (from left to right in FIG. 1) by a first distance. A press working area 11a, a second press working area 11b, a third press working area 11c, and a finishing work area 11d are arranged in this order. A first press working die 12 is provided corresponding to the first press working region 11a, a second press working die 14 is provided corresponding to the second press working region 11b, and corresponds to the third press working region 11c. Then, a third press working mold 16 is provided, and a finishing work mold 18 is provided corresponding to the finishing work area 11d. In addition, the conveyance path 10 is provided with a conveyance mechanism (not shown) for sequentially conveying the workpiece 20 to each of the processing areas 11a, 11b, 11c, and 11d. A punch holder 19 is attached to the lower surface of the slide 4, and a die holder 21 is attached to the upper surface of the bolster 8, and the machining dies 12, 14, 16, and 18 are respectively attached to the punch holder 19 and the die holder 21. So that it is supported.

  The first press working die 12 includes a first upper die 22 attached to the lower surface of the punch holder 19, a first lower die 24 attached to the upper surface of the die holder 21, and a lower surface of the first upper die 22. And a first press working tool 26 having a substantially conical shape attached to the. The first upper mold 22 and the first lower mold 24 are disposed so as to face each other in the vertical direction, and a first press working area 11 a is provided between the first upper mold 22 and the first lower mold 24. In this first press working area 11a, press working by the first upper mold 22 and the first lower mold 24 is performed as described later.

  The second press working die 14 includes a second upper die 28 attached to the lower surface of the punch holder 19, a second lower die 30 attached to the upper surface of the die holder 21, and the lower surface of the second upper die 28. And a second press working tool 32 having a substantially spherical shape attached to the tip. The second upper mold 28 and the second lower mold 30 are disposed so as to face each other in the vertical direction, and a second press working region 11b is provided between the second upper mold 28 and the second lower mold 30. In the second press working area 11b, press working by the second upper mold 28 and the second lower mold 30 is performed as described later.

  The third press working die 16 includes a third upper die 34 attached to the lower surface of the punch holder 19, a third lower die 36 attached to the upper surface of the die holder 21, and a third upper die 34. And a third press working tool 38 having a small diameter and a columnar shape attached to the lower surface of the first press working tool 38. The third upper mold 34 and the third lower mold 36 are disposed so as to face each other in the vertical direction, and a third press working region 11 c is provided between the third upper mold 34 and the third lower mold 36. In the third press working area 11c, press working by the third upper mold 54 and the third lower mold 56 is performed as described later. In addition, on the upper surface of the third lower mold 36, an accommodation space 40 is provided for accommodating waste generated by machining in the third press working area 11c, in this embodiment, punching. A discharge hole 41 extending obliquely downward is communicated with the lower end portion of the accommodation space 40, and the lower end portion of the discharge hole 41 is opened on the side surface of the third lower mold 36.

  Corresponding to the first, second and third press working areas 11a, 11b and 11c, the workpiece 20 is positioned and held in the first, second and third press working areas 11a, 11b and 11c as required. Holding mechanisms 42, 44, 46 are provided. These holding mechanisms 42, 44, 46 are composed of a pair of holding plates 48, 50, 52 arranged at intervals. The pair of holding plates 48, 50, and 52 are reciprocated between a holding position that presses the upper surface of the work 20 and a release position that is spaced upward from the upper surface of the work 20. When the pair of holding plates 48, 50, 52 is positioned at the holding position, the workpiece 20 is brought into contact with the pair of holding plates 48, 50, 52 and the upper surfaces of the first, second and third lower molds 24, 30, 36. Sandwiched between. Thereby, the workpiece | work 20 is hold | maintained at the 1st, 2nd and 3rd press work area 11a, 11b, 11c, and it has a predetermined positional relationship with respect to the 1st, 2nd and 3rd press work tools 26, 32, 38. Positioned and held. Further, when the pair of holding plates 48, 50, 52 are positioned at the release position, the above-described holding of the workpiece 20 is released.

  The finishing mold 18 is rotatably supported by the upper mold body 54 attached to the lower surface of the punch holder 19, the lower mold body 56 attached to the upper surface of the die holder 21, and the upper mold body 54. A tool holder 58 and a finishing tool 60 mounted on the tool holder 58 so as to be movable up and down are provided. On the upper surface of the lower mold body 56, a recessed space 62 for allowing the tip of the finishing tool 60 to escape is provided. A through hole 63 extending obliquely downward is communicated with the lower end portion of the recessed space 62, and the lower end portion of the through hole 63 is opened on the side surface of the lower mold body 56.

  The tool holder 58 has a holder body 64 and a rotating shaft 66 extending in the axial direction (vertical direction in FIG. 2) from the upper surface of the holder body 64. A support housing space 68 having a circular cross section is provided inside the holder main body portion 64, and a lower end portion of the support housing space 68 is open to the lower surface of the holder main body portion 64. A coil spring 70 (which constitutes an elastic biasing means) is disposed in the support housing space 68 so as to be extendable and contractable. A guide recess 72 extending in the axial direction is provided on the inner surface of the support housing space 68. A driven pulley 74 is attached to the rotating shaft portion 66.

  A pair of bearings 76 are provided in the upper mold main body 54 so as to be spaced apart from each other in the vertical direction, and the rotary shaft portion 66 of the tool holder 58 is rotatably supported by the pair of bearings 76. Yes. An electric motor 78 is provided on the outer surface of the upper mold body 54, and a drive pulley 82 is attached to a drive shaft 80 of the electric motor 78. The drive pulley 82 and the driven pulley 74 are connected to each other via a drive belt 84.

  The finishing tool 60 is configured to be tapered so that the outer diameter gradually decreases from the base end portion toward the tip end portion, and the tip end portion is substantially corresponding to the shape of a workpiece recess 88 (described later) of the workpiece 20. It has a hemispherical shape. The finishing tool 60 is made of, for example, tool steel, and its surface is coated with, for example, TiN. A plurality of (four in the present embodiment) convex curved machining surfaces 86 are formed at intervals in the circumferential direction in the machining portion of the finishing tool 60 (see FIGS. 4 and 5). Each machining surface 86 includes a finish machining portion 87, a curved portion 89 provided at the downstream end of the finish machining portion 87 when viewed in the rotation direction of the finishing tool 60 (the direction indicated by the arrow in FIG. 4), have. The finishing portion 87 has a shape corresponding to the shape of the inner surface of the recess 88 to be processed of the workpiece 20, and the curved portion 89 has a radius of curvature that gradually decreases in the rotational direction of the finishing tool 60. It is configured.

  In addition, a cylindrical attachment shaft portion 90 extending in the axial direction is provided at the base end portion of the finishing tool 60, and the attachment shaft portion 90 is inserted into and supported by the support housing space 68 of the holder main body portion 64 so as to be movable up and down. Has been. The lower end portion of the coil spring 70 is supported by the upper end surface of the mounting shaft portion 90, and the finishing tool 60 is elastically biased downward by the coil spring 70. The coil spring 70 constitutes a pressing mechanism for pressing the finishing portion 87 of each processing surface 86 of the finishing tool 60 against the inner surface of the workpiece recess 88 of the workpiece 20 (which constitutes the processing surface). .

  A guide key member 92 is provided on the outer surface of the mounting shaft portion 90, and the guide key member 92 is movably inserted into the guide recess 72 of the support housing space 68. Thereby, the movement of the finishing tool 60 in the axial direction (vertical direction in FIGS. 2 and 3) relative to the holder main body 64 is allowed, but relative rotation with respect to the holder main body 64 is prevented, and the finishing tool 60 Detachment from the holder body 64 is prevented.

  The electric motor 78, the driving pulley 82, the driving belt 84, the driven pulley 74, and the tool holder 58 constitute a rotating mechanism for rotating the finishing tool 60. In this rotating mechanism, the electric motor 78 rotates. The tool holder 58 and the finishing tool 60 are integrally transmitted in a predetermined direction (direction indicated by an arrow in FIG. 4) together with the rotary shaft 66 together with the rotary shaft 66 through the drive belt 84. 100 to 1000 rpm).

  Further, a holding mechanism 94 for positioning and holding the workpiece 20 with respect to the finishing region 11d is provided corresponding to the finishing region 11d. The holding mechanism 94 is composed of a pair of holding plates 96 arranged at intervals. The pair of holding plates 96 are reciprocated between a holding position (shown by a solid line in FIG. 2) and a release position (shown by a two-dot chain line in FIG. 2), as described above. When the pair of holding plates 96 is positioned at the holding position, the workpiece 20 is sandwiched between the pair of holding plates 96 and the upper surface of the lower mold body 56, whereby the workpiece 20 is held in the finishing region 11d and finished. It is positioned and held in a predetermined positional relationship with respect to the processing tool 60. Further, when the pair of holding plates 96 is positioned at the release position, the holding of the workpiece 20 is released.

  Next, a method for processing the workpiece 20 using the press device 2 described above will be described with reference to FIG. This embodiment demonstrates the case where the reflector for LED is processed as the workpiece | work 20. FIG.

  When processing by the press device 2 is started, the workpiece 20 is sequentially transported through the first press processing region 11a, the second press processing region 11b, the third press processing region 11c, and the finishing processing region 11d by a transport mechanism (not shown). Is done. Further, the slide 4 was reciprocated between the top dead center and the bottom dead center, and was pressed to the workpiece 20 conveyed to the first to third press working areas 11a to 11c and conveyed to the finishing area 11d. The finishing process for the workpiece 20 is performed at the same time.

  In the first press working area 11a, the pair of holding plates 48 are moved from the release position to the holding position with respect to the work 20 conveyed to the first press working area 11a, and the work 20 is moved to the first press working area 11a. It is positioned and held at a predetermined position. Similarly, in the second press working area 11b (or the third press working area 11c, the finishing work area 11d), the workpiece 20 is similarly placed in the second press working area 11b (or the third press working area 11c, the finishing work area 11d). ) Is held at a predetermined position.

  Moreover, in the 2nd press work area 11b (or 3rd press work area 11c, finishing work area 11d), it is 2nd from the 1st press work area 11a (or 2nd press work area 11b, 3rd press work area 11c). The pair of holding plates 50 (or 52, 96) is moved from the release position to the holding position with respect to the workpiece 20 conveyed to the press working area 11b (or the third press working area 11c, finishing machining area 11d). 20 is positioned and held at a predetermined position in the second press working area 11b (third press working area 11c, finishing work area 11d).

  Thereafter, when the slide 4 is lowered from the top dead center to the bottom dead center, the work is performed by the first upper mold 22 and the first lower mold 24 of the first press working mold 12 in the first press working area 11a. 20 is pressed. As a result, the first press working tool 26 acts on the upper surface of the workpiece 20, and a substantially conical recess 100 is formed on the upper surface of the workpiece 20, as shown in FIG. When the press working by the first press working die 12 is completed, the pair of holding plates 48 are moved from the holding position to the release position, and the workpiece 20 processed in the first press working area 11a is transferred to a transport mechanism (not shown). ) To the second press working area 11b.

  Further, in the second press working area 11 b, the work 20 is pressed by the second upper mold 28 and the second lower mold 30 of the second press working mold 14. As a result, the second press working tool 32 acts on the concave portion 100 of the workpiece 20, and a substantially hemispherical concave portion 88 is formed on the upper surface of the workpiece 20, as shown in FIG. At this time, the surface roughness of the inner surface of the recess 88 to be processed is relatively rough, and therefore there are minute irregularities (not shown) on the inner surface of the recess 88 to be processed. When the press working by the second press working die 14 is completed, the pair of holding plates 50 are moved from the holding position to the release position, and the workpiece 20 processed in the first press working area 11b is transferred to a transport mechanism (not shown). ) To the third press working area 11c.

  In the third press working area 11 c, the work 20 is pressed by the third upper mold 34 and the third lower mold 36 of the third press working mold 16. As a result, the third press working tool 38 acts on the bottom of the processed recess 88 of the workpiece 20, and a through hole 98 having a substantially circular cross section is formed on the bottom of the processed recess 88, as shown in FIG. Is done. When the press working by the third press working mold 16 is completed, the pair of holding plates 52 is moved from the holding position to the release position, and the workpiece 20 processed in the third press working area 11c is transported (not shown). ) To the finishing area 11d.

  In the finishing area 11d, the tip of the finishing tool 60 is inserted into the processed recess 88 of the workpiece 20, and the finishing part 87 of each processing surface 86 of the finishing tool 60 is processed by the action of the coil spring 70. It is pressed against the inner surface of the recess 88 (see FIGS. 3 and 4). Then, in this pressed state, the finishing tool 60 is rotated in a predetermined direction by the rotating mechanism, and the finishing tool 60 acts on the inner surface of the processed recess 88 of the workpiece 20 and exists on the inner surface of the processed recess 88. The minute unevenness is crushed by the finishing portion 87 of each processing surface 86 of the finishing tool 60 and is plastically deformed, thereby finishing the inner surface of the processed recess 88 into a mirror surface (or surface roughness close to the mirror surface). it can. As described above, the curved portion 89 of each machining surface 86 is configured such that the radius of curvature gradually decreases in the rotational direction of the finishing tool 60, and therefore the edge of each machining surface 86 is formed into a recess to be machined. Each finishing portion 87 can be effectively pressed against the inner surface of the workpiece recess 88 without biting into the inner surface of the workpiece 88.

  In this embodiment, since the press device 2 is composed of a servo press, the bottom dead center holding time at which the slide 4 is positioned at or near the bottom dead center can be controlled, and this bottom dead center holding time is controlled. By doing so, the finishing time for finishing with the finishing tool 60 can be adjusted. The finishing time varies depending on the processing material, but can be set to, for example, about 1 to 10 seconds.

  In the processing by the press device 2 described above, a substantially hemispherical processed recess 88 is formed on the upper surface of the workpiece 20 by pressing (forging) using the first and second pressing dies 12 and 14. Further, a through hole 98 is formed at the bottom of the processed recess 88 of the workpiece 20 by press working (punching) using the third press working die 16. The through hole 98 functions as an insertion hole through which the terminal of the LED is inserted. Furthermore, by finishing with the finishing die 18, the inner surface of the processed recess 88 of the workpiece 20 is finished to a mirror surface (or surface roughness close to the mirror surface). The inner surface of the processed recess 88 functions as a reflecting surface that reflects light from the LED. As described above, in the press device 2 of the present embodiment, the work 20 can be continuously and efficiently subjected to press working and finishing.

  In the press working by the first to third press working dies 12, 14, 16 and the finishing work by the finishing working die 18, the working oil is supplied to the working tools 26, 32, 38, 60, respectively. The

  Next, with reference to FIG.7 and FIG.8, the press apparatus of other embodiment and the finishing metal mold | die used for this are demonstrated. FIG. 7 is a perspective view showing a finishing tool of a finishing die according to another embodiment of the present invention, and FIG. 8 is a cross-sectional view showing a state where the finishing tool of FIG. 7 is inserted into a workpiece recess. FIG. In the present embodiment, components that are substantially the same as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, the finishing tool 60A has a substantially cross-shaped cross section. The processed surface 86A is formed in a convex curved surface shape, and a plurality (four in this embodiment) are arranged at intervals in the circumferential direction. Further, each machining surface 86A is provided at each of an upstream end and a downstream end of the finishing part 101 as viewed in the direction of rotation of the finishing part 101 and the finishing tool 60A (indicated by an arrow in FIG. 8). And bend portions 103a and 103b. The finish processing portion 101 has a shape corresponding to the shape of the inner surface of the recessed portion 88 to be processed of the workpiece 20, and the curved portions 103a and 103b are formed in so-called round portions having a predetermined radius of curvature. . The curved portion 103a at the upstream end may be omitted.

  The holding mechanism 94A is composed of a pair of fingers 102 that are arranged on the left and right sides with an interval therebetween. The pair of fingers 102 is between a holding position (indicated by a two-dot chain line in FIG. 8) for clamping the workpiece 20 from both the left and right sides, and a release position (indicated by a solid line in FIG. 8) separated from the workpiece 20 to the left and right outside. Is reciprocated.

  Therefore, also in the finishing tool 60A of the present embodiment, the finishing process can be efficiently performed on the inner surface of the processed recess 88 of the workpiece 20 as in the above embodiment.

  In the present embodiment, the holding mechanism 94A is composed of a pair of fingers 102, but it can also be composed of, for example, a scroll chuck or a collect chuck. When configured in this way, for example, the circular workpiece 20 is held from the entire circumference of the outer peripheral surface thereof by the holding mechanism 94A.

  As mentioned above, although various embodiment of the press apparatus according to this invention and the finishing metal mold | die used for this was described, this invention is not limited to this embodiment, Various deformation | transformation is carried out, without deviating from the scope of the present invention. Or it can be modified.

  In each of the above embodiments, the finishing tool 60 (60A) is configured to rotate about the axis by the rotation mechanism. However, instead of such a configuration, the workpiece 20 may be configured to rotate about the axis.

  Moreover, in each said embodiment, although it comprised so that a finishing process might be given to the inner surface (concave curved surface) of the to-be-processed recessed part 88 of the workpiece | work 20, for example, a finishing process is carried out to the outer peripheral surface (convex curved surface) of the cylindrical workpiece | work 20. You may comprise so that it may give.

  Further, in each of the above embodiments, the biasing means of the pressing mechanism is configured by the coil spring 70 as the elastic biasing means, and the finishing tool 60 is elastically biased by the coil spring 70. You may comprise from the air spring using a pressure cylinder mechanism, the oil spring using a hydraulic cylinder mechanism, etc.

  In each of the above embodiments, the three press working areas 11a, 11b, and 11c are arranged on the upstream side of the finishing work area 11d. However, one, two, or four or more press working areas are provided. You may make it provide. Further, after the punching process by the third press working mold 16, the forging process by the first and second press working molds 12, 14 may be performed, or by the third press working mold 16. The punching process may be omitted.

  Further, in each of the above embodiments, the processed recess 88 of the workpiece 20 is configured in a substantially hemispherical shape, but may be configured, for example, from a through-hole having a circular cross section. In the present specification, “recessed portion to be processed” is used as a concept including a through hole. In such a case, the shape defined by each machining surface 86 (86A) is formed in a cylindrical shape corresponding to the shape of the machining recess 88, and the outer diameter of the finishing tool 60 (60A) is set to the machining recess. It is configured to be slightly smaller than the inner diameter of 88. Further, at the time of finishing, the tip of the finishing tool 60 (60 </ b> A) passes through the processed recess 88 of the workpiece 20 and escapes into the recess space 62 provided in the lower mold body 56.

  Moreover, in each said embodiment, although the press apparatus 2 was comprised from the crank press, it can also comprise from a hydraulic press etc., for example.

  Moreover, the shape of the finishing tool 60 (60A) can be set as appropriate. In each of the above embodiments, four processed surfaces 86 (86A) are provided, but may be two, three, or five or more, and the number can be set as appropriate. Further, the size in the circumferential direction of the finish processing portion 87 (101) can be appropriately set according to the processing conditions such as the material of the workpiece 20 and the size of the recessed portion 88 to be processed.

DESCRIPTION OF SYMBOLS 2 Press apparatus 4 Slide 8 Bolster 11a 1st press process area 11b 2nd press process area 11c 3rd press process area 11d Finishing process area 12 1st press process metal mold 14 2nd press process metal mold 16 3rd press process metal mold 18 Finishing mold 20 Workpiece 60, 60A Finishing tool 70 Coil spring 86, 86A Processing surface 88 Recessed part

Claims (6)

A bolster, a slide supported so as to be reciprocally movable in a direction approaching and separating from the bolster, and a press working area and a finishing working area disposed between the slide and the bolster are provided. A press working mold and a finishing working mold, and a transport mechanism for transporting a work through the press working area and the finishing work area,
The press working die includes an upper die attached to the slide and a lower die attached to the bolster, and the finishing die includes a finishing tool attached to the slide; A rotating mechanism for axially rotating the finishing tool or the workpiece, and a pressing mechanism for pressing the finishing tool against a work surface of the workpiece,
When the slide is lowered toward the bolster, the workpiece is pressed by the upper die and the lower die of the press die in the press working region, and in the finishing region. The finishing tool is pressed against the workpiece surface of the workpiece by the pressing mechanism, and the finishing tool or the workpiece is axially rotated by the rotating mechanism in this pressed state to the workpiece surface of the workpiece. A press apparatus characterized by being subjected to finishing. The press working mold is configured to form a processed recess in the workpiece, and the finishing mold is configured to finish the inner surface of the processed recess,
When the slide is lowered toward the bolster, the workpiece recess is formed in the workpiece by the upper die and the lower die of the press die in the press working region, and the finish working region. In the above, the finishing tool is pressed against the inner surface of the workpiece recess of the workpiece by the pressing mechanism, and the finishing tool or the workpiece is axially rotated by the rotating mechanism in this pressing state. The press apparatus according to claim 1, wherein a finishing process is performed on the inner surface of the recess to be processed.   The machining portion of the finishing tool is provided with a plurality of machining surfaces at intervals in the circumferential direction, and each of the plurality of machining surfaces is viewed in the rotation direction of the finishing machining portion and the finishing tool. A curved portion provided at a downstream end of the finishing portion, and the finishing portion has a shape corresponding to the shape of the inner surface of the workpiece recess of the workpiece, The press device according to claim 2, wherein the portion is configured such that the radius of curvature gradually decreases toward the rotation direction of the finishing tool or has a predetermined radius of curvature. A bolster, a slide supported so as to be reciprocally movable toward and away from the bolster, and a finishing metal provided corresponding to a finishing area disposed between the slide and the bolster A mold, and
The finishing tool includes a finishing tool attached to the slide, a rotating mechanism for rotating the finishing tool or the work, and a pressing mechanism for pressing the finishing tool against a work surface of the work. And a pressing mechanism of
When the slide is lowered toward the bolster, the finishing tool is pressed against the work surface of the workpiece by the pressing mechanism in the finishing region, and the finishing tool is pressed by the rotating mechanism in this pressed state. Or the said workpiece | work is axially rotated and a finishing process is given to the said to-be-processed surface of the said workpiece | work.   The said pressing mechanism is comprised from a biasing means, and the said finishing tool is pressed by the said to-be-processed surface of the said workpiece | work by the biasing effect | action of the said biasing means. Press device. A finishing mold for finishing the inner surface of a recess to be processed formed on a workpiece,
A finishing tool, a rotation mechanism for rotating the finishing tool axis, and a pressing mechanism for pressing the finishing tool against the inner surface of the processed recess,
When finishing the inner surface of the recess to be processed of the workpiece, the finishing tool is pressed against the inner surface of the recess to be processed by the pressing mechanism, and the finishing tool is pressed by the rotating mechanism in this pressed state. Finishing mold, characterized in that the shaft is rotated.

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