JP2007038278A - X-axis moving stage and press equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-axis moving stage, which reduces as much as possible the influence of pitching or yawing caused by a pair of X-axis guide rails without raising the finishing accuracy of the pair of X-axis guide rails, and also to provide a press equipped with the same. <P>SOLUTION: The X-axis moving stage is provided with: a work table 31 for placing a work W; an X-axis motor (an X-axis linear motor 32) for moving the work table 31; a pair of X-axis guide rails 34, which slidably support the work table 31 and further guide the moving of the work table 31 in the X-axis direction; and an X-axis base plate 35 for supporting the X-axis guide rails 34. The work table 31 has an X-axis table 43, which is guided by the pair of X-axis guide rails 34, and a work placing part (a set table 41), which places the work W in such a manner that the treatment surface of the work W has approximately the same height as that of the upper edge surface of the X-axis guide rails 34. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an X-axis moving stage that moves the workpiece placed in accordance with the workpiece processing in the X-axis direction within a horizontal plane, and a press apparatus including the X-axis moving stage.

Conventionally, a press apparatus equipped with an XY stage including this type of X-axis moving stage is known (for example, Patent Document 1). The press machine is equipped with a turntable that rotates around the center axis of the punch and die, and an XY stage is mounted on the turntable to place the workpiece and move it in the X-axis and Y-axis directions. ing. The XY stage includes a pair of Y-axis guide rails (LM guides) fixed on the turntable, a Y-axis table slidably provided on the pair of Y-axis guide rails, and the Y-axis table as a pair of Y-axis. A Y-axis motor and Y-axis lead screw that moves in the Y-axis direction using the guide rail as a guide, a pair of X-axis guide rails (LM guides) fixed on the Y-axis table, and slides on the pair of X-axis guide rails An X-axis table that is freely provided, and an X-axis motor and an X-axis lead screw that move the X-axis table in the X-axis direction using a pair of X-axis guide rails as a guide are provided.
The X-axis table and the Y-axis table are formed in a frame shape with an opening facing the die at the center, while the X-axis table is provided with a clamper for fixing a workpiece on the upper surface thereof. By driving the X-axis motor with the workpiece placed and fixed on the X-axis table, the workpiece moves in the X-axis direction via the X-axis table, and by driving the Y-axis motor, the Y-axis The workpiece moves in the Y-axis direction via the table (X-axis moving stage).
JP 2001-96320 A

  For example, when the workpiece is moved in the X-axis direction via the X-axis table, if the guide surfaces of the pair of X-axis guide rails are not formed with high accuracy, the workpiece is not moved accurately, and the press It is assumed that machining accuracy will be affected. Specifically, in a pair of X-axis guide rails, when the flatness of the upper surface (guide surface) is sweet and slightly wavy, so-called pitching occurs in the moving X-axis table, and the side surface (guide surface) ) Is wavy, yawing occurs. In such a case, if the Y-axis table and the turntable that support the pair of X-axis guide rails are sufficiently formed with respect to the processing accuracy of the press processing, the problem can be solved. However, the X / Y stage and the turntable thus configured are extremely expensive.

  The present invention provides an X-axis moving stage capable of reducing the effects of pitching and yawing caused by a pair of X-axis guide rails as much as possible without increasing the finishing accuracy of the pair of X-axis guide rails, and a press apparatus including the same The challenge is to provide

  The X-axis movement stage of the present invention is mounted on a workpiece processing apparatus that processes a workpiece, and the workpiece is placed on the X-axis movement stage that moves the workpiece placed in accordance with the workpiece processing in the X-axis direction in the horizontal plane. A work table, an X-axis motor for moving the work table, a pair of X-axis guide rails that slidably support the work table and guide the work table in the X-axis direction, and a pair of X-axis An X-axis base plate that supports the guide rail, the work table is guided by the pair of X-axis guide rails, and the work surface of the work table is substantially the same as the upper end surfaces of the pair of X-axis guide rails. And a work placement portion that is placed so as to have the same height.

By the way, the pitching of the work table based on the accuracy of the pair of X-axis guide rails, that is, the pitching of the workpiece, increases as the distance between the upper end surfaces of the pair of X-axis guide rails causing the pitching increases in the vertical direction. Become.
According to this configuration, the work placement unit of the work table places the work so that the processing surface thereof is substantially the same height as the upper end surfaces of the pair of X-axis guide rails. Even if pitching occurs due to the X-axis guide rail, the up and down deflection width of the workpiece can be minimized. That is, the effect of pitching by the pair of X-axis guide rails can be reduced as much as possible without increasing the finishing accuracy of the pair of X-axis guide rails. Therefore, it is possible to eliminate the influence of pitching to the maximum while suppressing the cost.

  In this case, it is preferable that the workpiece placing unit is configured to be able to place the workpiece such that the center line between the pair of X-axis guide rails matches the center line of the workpiece.

Similarly, the yawing of the work table based on the accuracy of the pair of X-axis guide rails, that is, the yawing of the workpiece, increases as the distance from the pair of X-axis guide rails or one of the X-axis guide rails increases.
According to this configuration, the workpiece placing unit places the workpiece so that the center line between the pair of X-axis guide rails matches the center line of the workpiece. Even if yawing occurs, the lateral deflection of the workpiece can be minimized. That is, the influence of yawing by the pair of X-axis guide rails can be reduced as much as possible without increasing the finishing accuracy of the pair of X-axis guide rails. Therefore, the influence of yawing can be eliminated to the maximum while the cost is suppressed.

  In these cases, it is preferable that the workpiece placing unit is configured by recessing the central portion of the X-axis table.

  According to this configuration, it is possible to easily form the workpiece placement portion and not increase the number of parts.

  Similarly, it is preferable that an opening is formed in the center portion of the X-axis table, and the workpiece mounting portion is configured by a mounting jig that is suspended from the opening and mounts the workpiece on the bottom surface. .

  According to this configuration, by forming the mounting jig in accordance with the workpiece, it is possible to deal with various workpieces having different thicknesses and shapes while making the X-axis table common.

  In these cases, the moving position detecting means includes a linear scale provided on one of the work table and the X-axis base plate and an optical sensor provided on the other, and further includes moving position detecting means for detecting the moving position of the work table, and the moving position detecting means. Is preferably disposed between the pair of X-axis guide rails.

Due to yawing or the like, there are cases where the movement of the work table on the left and right of the pair of X-axis guide rails is not constant.
According to this configuration, since the movement position detection means is disposed between the pair of X-axis guide rails, the movement position detection means detects the average value of the left and right movements on the work table. become. Therefore, even when the movement of the work table is not constant on the left and right, the movement position detecting means can absorb this and make the movement of the work constant.

  The press device according to the present invention is the press device provided with a punch and a die for processing a workpiece, wherein the X axis processing opening in which the punch and the die face each other is formed on the workpiece mounting portion and the X axis base plate. A moving stage is provided.

  According to this configuration, since the effects of pitching and yawing due to the pair of X-axis guide rails can be reduced as much as possible without increasing the finishing accuracy of the pair of X-axis guide rails, the overall cost is suppressed. However, the processing accuracy of press working can be increased. In addition, since the punch and the die can directly face the workpiece placement portion through the X-axis processing opening, the processing accuracy of the press working can be increased also in this respect.

  In this case, the apparatus further includes a Y-axis stage that moves the X-axis movement stage in the Y-axis direction. The Y-axis stage is a Y-axis table that also serves as an X-axis base plate; a Y-axis motor that moves the Y-axis table; A Y-axis table is slidably supported, and includes a pair of Y-axis guide rails that guide the movement of the Y-axis table in the Y-axis direction, and a Y-axis base plate that supports the pair of Y-axis guide rails. The shaft table preferably has a Y-axis processing opening that communicates with the X-axis processing opening and that faces the punch and die.

  According to this configuration, the X-axis moving stage can be moved in the Y-axis direction, so that the workpiece can be positioned in the Y-axis direction. In addition, since the punch and the die can directly face the work placement portion through the Y-axis processing opening, the processing accuracy of the press working can be increased also in this respect.

  Hereinafter, a press apparatus to which the present invention is applied will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the press device 1 is mounted on a pedestal 2 installed on the floor, a support base 3 (surface plate) supported by the pedestal 2, and the support base 3. A press device main body 4 that presses the workpiece W.

  The gantry 2 is configured by assembling angle members into a square. A support leg 5 with an adjuster is fixed to the bottom of the gantry 2 so that the parallelism of the press device 1 can be adjusted. The support base 3 is made of a casting having a plurality of hollow portions 233, and the upper surface thereof has high flatness in order to increase the installation accuracy of the press device body 4.

  The press device main body 4 includes a workpiece moving stage 11 for moving the workpiece W in the Y-axis direction and the X-axis direction orthogonal thereto, and a punch P1 (upper die) and a die D1 (lower die) for press working. A pair of molds are mounted, and a press mechanism 21 that presses the workpiece W by cooperating the punch P1 and the die D1 is provided.

  As shown in FIGS. 1 to 4, the workpiece moving stage 11 has a set table 41 (work placement unit) on which the workpiece W is set, and the workpiece W can be slid in the X-axis direction via the set table 41. The X-axis moving stage 22 is supported, and the Y-axis moving stage 23 is slidably supported via the X-axis moving stage 22 so as to be slidable in the Y-axis direction.

  As shown in FIGS. 3 and 4, the X-axis movement stage 22 extends in the X-axis direction with the work table 31 for setting the work W, and moves the work W in the X-axis direction via the work table 31. A pair of X-axis linear motors 32, a pair of (two sets of four) X-axis sliders 33 that support the work table 31, and a pair of X-axis linear motors 32 are arranged in parallel. A pair of (two) X-axis guide rails 34 for supporting the movement of the pair of X-axis sliders 33 and an X-axis base plate 35 for supporting them are provided.

  As shown in FIGS. 3 and 4, the work table 31 includes a set table 41 for setting the work W, a suspension member 42 for supporting the set table 41 so as to be suspended, and a pair of suspension members 42 via the suspension member 42. The X axis table 43 is supported by the X axis slider 33 and supports the set table 41.

  The set table 41 is composed of a thick plate having a substantially square shape in plan view, and a square set opening 51 is formed at the center thereof. The workpiece W is positioned on the set table 41 so as to face the set opening 51, and faces the punch P1 and the die D1 through the set opening 51. The set table 41 has two sets of four set members 52 (clampers) for setting (fixing) the workpieces W positioned along a pair of edges of the set opening 51 (extending in the X-axis direction). Is arranged. The set member 52 is configured by using an air cylinder, and fixes the positioned work W (edge) to the set table 41 so as to be pressed from above.

  As shown in FIGS. 3 and 4, in this embodiment, the workpiece W is positioned and set on the set table 41 via the workpiece setting jig 61. The work setting jig 61 is formed in a frame shape having a square opening, and is composed of a pair of a lower frame 62 and an upper frame 63. The lower frame 62 is formed of a thick plate that is square in plan view. The both ends of the lower frame 62 extending in the Y-axis direction are formed thick, and the lower frame 62 is formed with set recesses 64 in which the workpiece W is set. An opening 65 a is formed in the set recess 64, and the edges of the four sides of the (square) workpiece W are placed on the set recess 64. Also, six positioning pins 66 for positioning the workpiece W with respect to the lower frame 62 are projected from the set recess 64 by abutting the end (side end surface) of the placed workpiece W. . In this case, the lower frame 62 is positioned and fixed with accuracy with respect to the set table 41 in advance. By positioning the workpiece W with respect to the lower frame 62, the workpiece W is also accurately positioned with respect to the set table 41. It can be positioned.

  The upper frame 63 is also composed of a thick plate having a square shape in plan view, and an opening 65b is formed at the center thereof. The upper frame 63 is formed with six fitting holes 67 that fit into the six positioning pins 66 formed in the lower frame 62.

  In the workpiece setting jig 61, after positioning the workpiece W on the lower frame 62, the upper frame 63 is superimposed on the lower frame 62 via the workpiece W, and the positioned workpiece W is placed between the upper frame 63 and the lower frame 62. It is supposed to be pinched. After the workpiece W is sandwiched between the upper frame 63 and the lower frame 62, the workpiece W is pressed against the set table 41 by the above-described two sets of four set members 52. Can be fixed to the set table 41 in a state of positioning.

  The suspension member 42 includes a suspension support member 71 supported by the X-axis table 43, and four columnar members 72 that cause the suspension support member 71 to support the set table 41. The X-axis table 43 is formed with a planar view insertion opening (not shown: described later), and the suspension support member 71 is formed in a planar view tubular shape following the opening shape of the insertion opening, It has an insertion part 81 inserted through the insertion opening, and a bowl-shaped frame part 82 that is connected to the upper side of the insertion part 81 and is fixed to the X-axis table 43. The punch P1 can be made to face the workpiece W set on the set table 41 through the punch opening 65 (X-axis processing opening) formed by the insertion portion 81 and the frame-like portion 82. .

  The four columnar members 72 are respectively disposed corresponding to the four corners of the set table 41, and the lower ends thereof support the set table 41 so as to be slidable in the vertical direction. Further, the upper ends of the four columnar members 72 are fixed to the frame-shaped portion 82 two by two along a pair of sides of the punch opening parallel to the Y-axis direction.

  The X-axis table 43 is formed of a thick plate having a square shape in plan view, and an insertion opening (not shown) through which the suspending member 42 is inserted so that the set table 41 protrudes downward in the center. Is formed. Then, when the suspension member 42 is inserted into the insertion opening and the suspension member 42 (frame-like portion 82) is fixed to the upper surface of the X-axis table 43, the height position at which the workpiece W is pressed is set to the X-axis table 43. The set table 41 is supported so as to be at a predetermined height position that is lower than the upper surface.

  The pair of X-axis linear motors 32 are directly installed on the X-axis base plate 35. A square X-axis base opening 65 is formed in the X-axis base plate 35, and the pair of X-axis linear motors 32 are spaced apart in the Y-axis direction so as to sandwich the X-axis base opening 65. Yes. The mover 32 a of each X-axis linear motor 32 is fixed to the X-axis table 43, and the pair of X-axis linear motors 32 moves the set table 41 (work W) through the X-axis table 43 in the X-axis direction. It is supposed to move to.

  As shown in FIGS. 3 and 4, the X-axis linear scale 101 is provided on the work table 31 (more specifically, one of the pair of side portions of the insertion portion 81 parallel to the X-axis direction). It is installed vertically. On the other hand, the X-axis base plate 35 is provided with an X-axis linear sensor 102 (light sensor) that engages with the X-axis linear scale 101 and counts up detection lines (not shown) of the X-axis linear scale 101. With the cooperation of the X-axis linear scale 101 and the X-axis linear sensor 102, the position of the work table 31 (work W) in the X-axis direction can be grasped. In addition, the X-axis linear sensor 102 is engaged with the X-axis linear scale 101 to detect the left and right positions when the work table 31 is moved in the X-axis, and thus a pair of X-axis guide rails that guide the movement of the work table 31. Between the two.

  A pair (two sets of four) of X-axis sliders 33 support both ends of the X-axis table 43 parallel to the X-axis direction. That is, each end of the X-axis table 43 parallel to the X-axis direction is supported by two X-axis sliders 33 that are spaced apart from each other. Each X-axis slider 33 has a concave portion (not shown) that engages with the X-axis guide rail 34, and moves the X-axis table 43 in the X-axis direction while using the X-axis guide rail 34 as a guide. To guide. Thus, by guiding the movement of both ends parallel to the X-axis direction of the X-axis table 43 by the pair of X-axis sliders 33, the X-axis table 43 can be stably moved in the X-axis direction. It is like that.

  As shown in FIGS. 1, 3, and 4, the X-axis base plate 35 has a pair of thick end portions parallel to the X-axis direction. The thick-walled portion 92 extends in the X-axis direction. A pair of existing X-axis guide rails 34 is installed. Each X-axis guide rail 34 has a ridge 34 a that engages with the concave portion 33 a of the X-axis slider 33, and the movement of each X-axis slider 33 is guided by this ridge 34 a. Yes. Each X-axis guide rail 34 supports two X-axis sliders 33 slidably, and guides the movement of the work table 31 via these X-axis sliders 33. In the present embodiment, the height position of the set table 41 is set so that the height position at which the workpiece W is pressed is substantially the same height as the upper surface of the ridge 34a.

  As shown in FIGS. 1 to 3 and 7, the Y-axis movement stage 23 is configured in substantially the same manner as the X-axis movement stage 22, and a frame-shaped Y-axis table on which the X-axis movement stage 22 is placed. 111, a pair of Y-axis linear motors 112 extending in the Y-axis direction and moving the X-axis moving stage 22 (work W) in the Y-axis direction via the Y-axis table 111, and the Y-axis table 111 are supported. A pair of (two sets of four) Y-axis sliders 113 and a pair of Y-axis linear motors 112 are juxtaposed to support the pair of Y-axis sliders 113 slidably in the Y-axis direction, and the pair of Y-axis sliders 113. A pair of Y-axis guide rails 114 that guide the movement of the frame, and a frame-shaped Y-axis base plate 115 that supports these and is installed directly on the support base 3 described above.

  When the pair of Y-axis linear motors 112 are driven synchronously, the Y-axis table 111 moves in the Y-axis direction, and the pair of Y-axis sliders 113 and the pair of Y-axis guide rails 114 cooperate to form the Y-axis. The movement of the table 111 in the Y-axis direction is guided. Although not shown, the Y-axis table 111 is provided with a Y-axis linear scale, and the Y-axis base plate 115 is provided with a Y-axis linear sensor. The position of the workpiece W in the Y-axis direction can also be grasped.

  Next, the press mechanism 21 will be described. As shown in FIGS. 1 and 2, the press mechanism 21 has a gate-shaped support disposed on the rear side of the support base 3 so as to straddle the workpiece moving stage 11 (Y-axis moving stage 23) in the X-axis direction. A frame 121, a punch unit 122 that holds the punch P1, and is supported on the center portion of the portal support frame 121, and a die D1 that is installed on the support base 3 so that the die D1 faces the punch P1. Die unit 123.

  The gate-shaped support frame 121 is spaced apart in the X-axis direction so as to sandwich the workpiece moving stage 11 and spans a pair of leg members 131 erected on the support base 3 and the pair of leg members 131. Unit support member 132. The unit support member 132 supports the punch unit 122 at the center thereof, and supports the punch unit 122 so that the punch P1 faces the Y-axis base opening 65 surrounded by the frame-shaped Y-axis base plate 115. Yes.

  The punch unit 122 includes a slide 141 that supports the punch P1 and a motor-driven slide moving mechanism 142 that is supported by the portal support frame 121 and supports the punch P1 up and down via the slide 141.

  The slide 141 detachably supports the punch P1 via the punch holder P2. The slide moving mechanism 142 moves the punch P1 between a punch press position where the punch P1 presses the workpiece W (in cooperation with the die D1) and a punch standby position where the punch P1 is separated from the workpiece W. While raising and lowering vertically, power for pressing is supplied. That is, when the punch P1 is lowered from the punch standby position to the punch press position, the slide moving mechanism 142 presses the workpiece W via the punch P1 so that a predetermined load acts on the workpiece P, and at the same time, In cooperation with D1, press work is performed.

  The die unit 123 includes a bolster 151 that supports the die D1 and a motor-driven bolster lifting mechanism 152 that supports the bolster 151 so that the bolster 151 can be lifted and lowered.

  The bolster 151 detachably supports the die D1 via the die holder D2. The bolster elevating mechanism 152 is installed on the support base 3 and positioned in the Y-axis base opening 65 so that the die D1 faces the punch P1. The bolster raising / lowering mechanism 152 raises and lowers the die D1 and the bolster 151 so that they do not interfere with the Y-axis table 111 when the Y-axis moving stage 23 is driven. The die D1 cooperates with the punch P1. The bolster 151 is moved up and down between a die press position where press working is performed and a die standby position where the upper surface of the die D1 is lower than the lower surface of the Y-axis table 111 (see FIG. 4). In this case, the bolster elevating mechanism 152 has four guide posts (not shown), and the four columnar members 72 described above are configured by guide bushes that engage with the respective guide posts. The bolster elevating mechanism 152 can move the bolster 151 up and down stably while using the four columnar members 72 as guides.

  Here, a series of operations of the press apparatus 1 performed when press-working the workpiece W will be described. In the present embodiment, the workpiece W is carried in and out at a position on the near side in the drawing in FIG. 1, and when performing press working, first, the workpiece moving stage 11 (Y-axis moving stage 23) is driven. Then, the set table 41 is moved to a predetermined position (work loading / unloading position) on the near side of the figure. When the workpiece W is set on the set table 41, the workpiece moving stage 11 (Y-axis moving stage 23) is driven again to move the set table 41 to a predetermined position (press start position) on the rear side in the figure. A predetermined area (first area) of W is made to face the press working area where the punch P1 and the die D1 face.

  Thereafter, after the bolster raising / lowering mechanism 152 is driven to move the die D1 to the die press position, the slide moving mechanism 142 is continuously driven to lower the punch P1 to the punch press position. As a result, the punch P1 presses the work W, and the die D1 and the punch P1 cooperate to press the first region of the work W. In this case, the above-mentioned punch holder P2 has four guide rods P3 projecting downward, and the above-mentioned die holder D2 has four guide holes D3 corresponding to each guide rod P3. At the time of press working, each guide rod P3 is engaged with each corresponding guide hole D3 so that press working can be performed with high accuracy.

  When the press processing for the first processing region is completed, the slide moving mechanism 142 is driven to raise the punch P1 to the punch standby position. Next, the workpiece moving stage 11 (X-axis moving stage 22) is driven to send the first machining area, which is a press-processed portion, in the X-axis direction, and at the same time, the unmachined portion of the workpiece W (the next machining region). The second machining area) is exposed to the press machining area. Then, the slide moving mechanism 142 is driven to lower the punch P1 to the punch press position, and press processing is performed on the second processing region. As described above, in this embodiment, the workpiece W is subjected to predetermined press working while repeating the lowering of the punch P1 by the slide moving mechanism 142 and the feeding of the workpiece W in the X-axis direction. Yes.

  When all the press work on the workpiece W is completed, the slide moving mechanism 142 and the bolster lifting mechanism 152 are driven to raise the punch P1 to the punch standby position and move the die D1 to the die standby position. Thereafter, the workpiece moving stage 11 (Y-axis moving stage 23) is driven to move the set table 41 to the workpiece loading / unloading position. Thereby, the processed workpiece W and the unprocessed workpiece W can be switched.

By the way, the above-described pair of X-axis guide rails 34 (projection strips 34a) has a slight vertical undulation or an X-axis direction due to variations in mounting accuracy with respect to the X-axis base plate 35 and processing accuracy. May cause meandering.
The minute undulation and meandering of the X-axis guide rail 34 cause pitching and yawing in the X-axis table 43 moving in the X-axis direction.
That is, the minute vertical undulations on the upper end surfaces of the ridges 34a of the pair of X-axis guide rails 34 cause the vertical deflection or pitching of the X-axis table 43 (work W) guided thereby.
On the other hand, meandering in the Y-axis direction on the end surfaces of the pair of X-axis guide rails 34 on the convex strip 34a side causes the X-axis table 43 (work W) to shake or yaw in the Y-axis direction.
As described above, the press device of the present embodiment is designed with high accuracy, and the press work of the work W is performed by synchronizing the press operation and the work W feed in the X-axis direction. There is a possibility that the machining accuracy of the workpiece W may be adversely affected by pitching and yawing that occurs when the X-axis table is moved. That is, due to pitching or yawing, the actual press processing position of the workpiece W is deviated from a preset press processing position.

Therefore, the press device 1 of the present embodiment is configured to reduce the influence of pitching and yawing on the press work as much as possible.
Here, in the press apparatus 1, the structure for reducing the influence of pitching and yawing is demonstrated in order.
The pitching (vertical deflection) of the workpiece W increases as the workpiece W moves away from the upper end surface of the above-described protruding portion 34a. In order to reduce the influence of pitching, in the press apparatus 1 of the present embodiment, the workpiece W is supported at a position lower than the upper surface of the X-axis table 43, and the workpiece W has the height of the upper end surface of the ridge 34a. They are set at approximately the same height. Thus, by holding the workpiece W at a height position substantially the same as the height of the upper end surface of the ridge 34a, the pitching of the workpiece W can be reduced.
Note that the pitching of the workpiece W is such that the height position of the workpiece W (set table 41) is substantially the same as the height position of the upper end surface of the X-axis guide rail 34 (projection strip 34a). Can be reduced. Accordingly, in the drawing, the workpiece W (set table 41) is supported at a position lower than the guide surfaces of the pair of X-axis guide rails 34, but is higher than the height of the guide surfaces of the pair of X-axis guide rails 34. However, pitching can be reduced.

  Further, yawing (swing in the Y-axis direction) of the workpiece W increases as the workpiece W moves away from the pair of X-axis guide rails 34 or one X-axis guide rail 34 to the side. In order to reduce the influence of this yawing, in the press device 1 of this embodiment, the center line Lb of the separation distance between the pair of two X-axis guide rails 34 and the center line La of the workpiece W are matched. The workpiece W is positioned and set on the set table 41. By adopting this configuration, it is possible to suppress the workpiece W from moving laterally away from the pair of X-axis guide rails 34 or one X-axis guide rail 34, and the pitching of the workpiece W can be reduced.

  With the configuration described above, it is possible to reduce the pitching and yawing generated by the pair of X-axis guide rails 34 to the level of the finishing accuracy and press the workpiece W. Further, as a whole, it is possible to increase the processing accuracy of press processing while suppressing costs. Further, since the punch P1 and the die D1 can directly face the set table 41 through the punch opening 65, the processing accuracy of the press working can be increased.

Next, a second embodiment of the press apparatus of the present invention will be described with reference to FIG.
Note that the description of the same parts as the first embodiment (other configurations other than the work table 200) is omitted.
In the press device 210 of the second embodiment, the work setting jig 61 is not provided, but a recess having a recess shape (hereinafter referred to as a recess 208) is formed in the center of the work table 200, and the workpiece W is formed in the recess 208. Is set.
The work table 200 is supported at both ends by a pair of (two sets of four) X-axis sliders 33 and guided by the pair of X-axis guide rails 34 in the X-axis direction. In addition, the work table 200 is provided with a work placement unit 205 on which the bottom surface of the central recess 208 is positioned and set.
A square opening (set opening 206: X-axis processing opening) that is slightly smaller than the (square) work W is formed in the work mounting portion 205, and the work W is placed so that the work W faces the set opening 206. Placement unit 205 is set. At this time, the work W is supported via the work table 200 so as to be substantially at the same height as the upper end surface (projected strip portion 34a) of the X-axis guide rail 34, and is centered with the pair of X-axis guide rails 34. Positioning and setting are performed so that the line Lb and the center line La of the workpiece W coincide. The workpiece W faces the punch P1 and the die D1 through the set opening 206 when punching.

As described above, in the second embodiment as well, as in the first embodiment, the workpiece W is supported so as to be at substantially the same height as the upper end surface (projected strip portion 34a) of the X-axis guide rail 34. Thus, the influence of pitching by the X-axis guide rail 34 can be reduced.
Further, since the workpiece W is positioned and set so that the pair of X-axis guide rails 34, the center line Lb, and the center line La of the workpiece W coincide with each other, the influence of yawing by the pair of X-axis guide rails 34 is reduced. Be able to.
According to this configuration, the number of parts can be reduced.

It is an external appearance perspective view of a press apparatus. It is a front view of a press apparatus. It is an external appearance perspective view of the workpiece movement stage which concerns on embodiment of this invention. It is sectional drawing of the workpiece movement stage which concerns on 1st Embodiment. It is an external appearance perspective view of the work setting jig concerning a 1st embodiment. It is a top view of the press apparatus concerning a 1st embodiment. It is a right view of the press apparatus which concerns on 1st Embodiment. It is sectional drawing of the worktable which concerns on 2nd Embodiment, and its periphery.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Press apparatus 2 ... Base 3 ... Support base 22 ... X-axis movement stage 23 ... Y-axis movement stage 31 ... Work table 32 ... X-axis linear motor 33 ... X-axis slider 34 ... X-axis guide rail 34a ... Projection part 35 ... X-axis base plate 41 ... Set table 42 ... Hanging member 43 ... X-axis table 51 ... Set opening 61 ... Work setting jig 62 ... Lower frame 63 ... Upper frame 71 ... Hanging support member 91 ... X-axis base opening 101 ... X-axis linear scale 102 ... X-axis linear sensor 111 ... Y-axis table 112 ... Y-axis linear motor 113 ... Y-axis slider 114 ... Y-axis guide rail 115 ... Y-axis base plate 116 ... Y-axis base opening La, Lb ... Center line

Claims (7)

In an X-axis moving stage that is mounted on a workpiece processing apparatus that processes a workpiece and moves the workpiece placed with the workpiece processing in the X-axis direction in a horizontal plane,
A work table on which the work is placed;
An X-axis motor for moving the work table;
A pair of X-axis guide rails that slidably support the work table and guide movement of the work table in the X-axis direction;
An X-axis base plate that supports the pair of X-axis guide rails,
The work table includes an X-axis table guided by the pair of X-axis guide rails, and the work so that a processing surface of the work is substantially flush with an upper end surface of the pair of X-axis guide rails. An X-axis movement stage comprising: a work placement unit to be placed.   The workpiece mounting portion is configured to be capable of mounting the workpiece such that a center line between the pair of X-axis guide rails matches a center line of the workpiece. Item 2. The X-axis moving stage according to Item 1.   The X-axis movement stage according to claim 1, wherein the work placement unit is configured by forming a recess in a central part of the X-axis table. An opening is formed at the center of the X-axis table,
The X-axis moving stage according to claim 1, wherein the work placing unit is configured by a placing jig that is suspended from the opening and places the work on a bottom surface. A linear position provided on one of the work table and the X-axis base plate and an optical sensor provided on the other, further comprising a movement position detecting means for detecting the movement position of the work table;
The X-axis moving stage according to any one of claims 1 to 4, wherein the moving position detecting means is disposed between the pair of X-axis guide rails. In a press device provided with a punch and a die for processing the workpiece,
The X-axis moving stage according to any one of claims 1 to 5, wherein X-axis processing openings that face the punch and the die are formed in the workpiece mounting portion and the X-axis base plate, respectively. Press machine. A Y-axis stage for moving the X-axis moving stage in the Y-axis direction;
The Y-axis stage includes a Y-axis table that also serves as the X-axis base plate;
A Y-axis motor for moving the Y-axis table;
A pair of Y-axis guide rails that slidably support the Y-axis table and guide the movement of the Y-axis table in the Y-axis direction;
A Y-axis base plate that supports the pair of Y-axis guide rails,
The press apparatus according to claim 6, wherein the Y-axis table is formed with a Y-axis processing opening that communicates with the X-axis processing opening and that faces the punch and the die.

Images