JP2016049551A - Height adjustment member and die holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily and reliably position an opening with respect to a recess of a die loading part thereby achieving easy installation of a die.SOLUTION: A height adjustment member 4 for adjusting a height of a die 3 is disposed between the die 3 equipped with a pin 11 projecting downwards and a die loading part 13 equipped with plural positioning recesses 14a to 14f which are provided on a die holder 5 and in which the pin 11 can be inserted. The height adjustment member has a first adjustment member 20 equipped with: piece parts 23a, 23b which are formed in an annular and tabular shape, and can be inserted into the recesses 14a to 14f; and first openings 24a to 24d which expose other recesses in the state that the piece part is inserted into any one of the recesses.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a height adjusting member and a die holder.

  A punch press such as a turret punch press performs punching of a plate material (workpiece) with a punch and a die. The die has an opening on the upper surface, and an edge of the opening is used as a blade portion. The die is placed on a die placement portion provided in the die holder, and is held by the die holder with an upper surface having an opening facing the punch. In addition, the die includes a pin protruding downward, and the circumferential direction with respect to the die holder is positioned by inserting the pin into any of a plurality of recesses formed in the die mounting portion.

  In the punch press, the die blade portion (edge) is worn by repeating the punching process, and the amount of burrs generated in the plate material during processing increases. The die is appropriately removed from the die holder as the wear progresses, the upper surface is polished, and again held by the die holder for use. The polished die has a top surface adjusted to a desired height by disposing a height adjusting member such as a shim between the die and the die mounting portion (see, for example, Patent Document 1). The height adjusting member of Patent Document 1 employs a configuration in which a plurality of locking portions are inserted into a die hole formed on the lower surface side of the die and held by the die.

Japanese Patent No. 2659656

  Since the height adjustment member of Patent Document 1 is limited to a dedicated member in which the dimension between the locking parts matches the dimension of the die hole, it is restricted in use. On the other hand, a height adjusting member of a type that is not easily restricted by use, for example, a type that is not held by a die has been proposed. The height adjusting member is installed on the die placement portion of the die holder, and the die is placed on the die placement portion from above. Accordingly, the height adjusting member has an opening (or a notch) for exposing the recess of the die installation portion, and the opening is aligned with the recess so that the die pin can be inserted. Is required. However, the operation of aligning the openings with the recesses is cumbersome, and in particular, when a plurality of height adjustment members are stacked and placed on the die mounting portion, the positions of the respective openings are likely to be displaced, It is not easy to position. As a result, not only does it take time to install the die in the die holder, but there is a problem that the work of installing the die is troublesome and troublesome for the operator.

  The present invention has been made in view of the above-described circumstances, and is a height adjustment member that can easily and reliably position an opening with respect to a concave portion of a die mounting portion to facilitate the installation of a die. And it aims at providing the die holder which can adjust the height of die | dye easily by providing such a height adjustment member.

  The height adjusting member of the present invention is disposed between a die having a pin projecting downward and a die placing portion provided on the die holder and having a plurality of positioning recesses into which the pin can be inserted. A height adjusting member for adjusting the height, which is provided in an annular and plate shape, a first part that can be inserted into the concave part, and a first part that exposes the other concave part in a state where the one part is inserted into one of the concave parts. And a first adjustment member having an opening.

  Further, the height adjusting member is provided in an annular and plate shape and can be disposed between the first adjusting member and the die mounting portion, and a notch portion into which the piece portion can be inserted, and a piece on the notch portion. You may have a 2nd adjustment member provided with the 2nd opening part connected with a 1st opening part in the state which inserted the part. The first adjustment member may include a plurality of pieces. In addition, at least one of the plurality of pieces may include a locking portion that locks a part of the second adjustment member and holds the second adjustment member. Moreover, the latching | locking part may be formed in the position which can hold | maintain several 2nd adjustment member.

  A die holder according to the present invention is a die holder that has a die mounting portion that holds a die including a pin protruding downward and includes a plurality of recesses into which the pin can be inserted, wherein the height adjusting member is the die and the die mounting. It is arrange | positioned between mounting parts and the height of die | dye is adjusted with a height adjustment member.

  According to the present invention, since the opening is positioned in the recess when the one part is inserted into the recess, the height adjusting member can be easily and reliably disposed on the die mounting part. Thereby, the worker can shorten the time for installing the die in the die holder, and the troublesome work such as the alignment of the opening and the recess is not required, and the burden on the worker can be reduced.

  In addition, the height adjusting member is provided in an annular and plate shape and can be disposed between the first adjusting member and the die mounting portion, and a notch portion into which the piece portion can be inserted, and a piece on the notch portion. In the case of having a second adjustment member including a second opening communicating with the first opening in a state where the portion is inserted, the first adjustment member and the second adjustment member are inserted by inserting the one part into the notch. Can be easily aligned, and the respective openings can be easily overlapped. Moreover, when a 1st adjustment member is provided with a some piece part, position alignment with a 1st adjustment member and a 2nd adjustment member can be performed more reliably. In addition, when at least one of the plurality of pieces includes a locking portion that locks a part of the second adjustment member and holds the second adjustment member, the second adjustment member is attached to the first adjustment member in advance. After being held, it can be placed on the die placement portion, and a plurality of height adjustment members can be easily placed on the die placement portion. In addition, when the locking portion is formed at a position where the plurality of second adjustment members can be held, the plurality of second adjustment members can be reliably held by the first adjustment member by the locking portion.

  Moreover, according to the die holder of the present invention, since the above-described height adjusting member is provided, the height of the die can be easily and reliably adjusted.

It is a perspective view which shows an example of the height adjustment member which concerns on embodiment. (A) is the top view which looked at die | dye from the upper surface side, (B) is the top view of the die mounting part of a die holder. An example of a 1st adjustment member is shown, (A) is a perspective view, (B) is a top view, (C) is a side view. An example of a 2nd adjustment member is shown, (A) is a perspective view, (B) is a top view. The one part of a 1st adjustment member is shown, (A) is the figure seen from X direction, (B) is the figure seen from the Y direction, (C) is the figure seen from the Z direction. The other example of a part is shown, (A) is the figure seen from X direction, (B) is the figure seen from the Y direction. (A) is the figure which looked at the other example of the one part from the X direction, (B) is the figure which looked at the other example of the one part from the X direction. (A) is a side view which shows an example of a turret punch press, (B) is a perspective view which shows an example of a die holder.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to this. Further, in the drawings, in order to describe the embodiment, the scale is appropriately changed and expressed by partially enlarging or emphasizing the description. In the following drawings, directions in the drawings will be described using an XYZ coordinate system. In this XYZ coordinate system, the vertical direction is the Z direction, and the horizontal direction is the X direction and the Y direction. In each of the X direction, the Y direction, and the Z direction, the direction of the arrow in the figure is the + direction, and the direction opposite to the arrow direction is the − direction.

  FIG. 1 is a perspective view showing an example of a height adjusting member 4 according to the present embodiment. In FIG. 1, a part of the turret punch press 1 is shown in an exploded manner. The punch press 1 includes a punch 2, a die 3, a height adjusting member 4, and a die holder 5. The punch press 1 performs, for example, punching or the like on a plate material (workpiece) disposed between the punch 2 and the die 3.

  The punch 2 may be called an upper die, an upper die, or the like. The punch 2 is held by, for example, an upper turret (see FIG. 8) and driven in the vertical direction. The punch 2 has an end surface 2a facing downward, and an edge of the end surface 2a functions as a blade portion. The shape of the end surface 2a is selected according to the shape of an opening or the like formed in the plate material. The shape of the end face 2a is, for example, a rectangular shape in FIG. 1, but may be a polygonal shape or a star shape other than a rectangular shape, or a shape that includes a curve in the outline, such as an elliptical shape or an oval shape. May be.

  The die 3 may be called a lower mold, a lower mold, or the like. The die 3 is held by the die holder 5 and disposed below the punch 2. The die 3 is a cylindrical member whose axial direction is, for example, the Z direction. The die 3 has an upper surface 3a and a lower surface 3b perpendicular to the Z direction, and an outer peripheral surface 3c around an axis parallel to the Z direction.

  The upper surface 3a of the die 3 is in contact with the plate material. The upper surface 3a of the die 3 has an opening 10 into which the tip of the punch 2 can be inserted. The opening shape and opening dimension of the opening 10 are set according to the shape and outer dimension of the end surface 2a of the punch 2, respectively. The edge of the opening 10 functions as a blade part for cutting the plate material together with the edge of the end surface 2 a of the punch 2. The lower part of the opening 10 is connected to a circular hole and penetrates to the lower surface of the die 3. Thereby, the chips cut by the punch 2 and the die 3 fall through the opening 10 and the hole and are discharged from the die 3.

  The die 3 includes a pin 11 protruding downward from the lower surface 3b. The pin 11 is used for positioning with the die holder 5. The pin 11 is formed in, for example, a substantially cylindrical shape, and the tip is rounded into a hemisphere. However, the pin 11 may have a prismatic shape, or its tip may be rounded. The number of pins 11 provided on the die 3 is one, for example, but may be two or more. When two or more pins 11 are provided, the pins 11 are formed at intervals according to the arrangement of the concave portions 14 described later. FIG. 2A is a plan view of the die 3 as viewed from the upper surface 3a side. As shown in FIG. 2A, the pin 11 is disposed in the −Y direction, for example. In the following description, the rotation position around the Z direction is represented by a counterclockwise rotation angle with respect to the −Y direction. For example, the rotational position of the pin 11 is represented by 0 °.

  As shown in FIG. 1, the die holder 5 has a side wall 12 into which the die 3 can be inserted without rattling. The side wall 12 is opened to the upper side of the die holder 5, and the opening shape and opening size are set to be substantially the same as the outer shape (circular in FIG. 1) and the outer size of the die 3 on the XY plane, respectively. The side wall 12 is in contact with the outer peripheral surface 3c of the die 3, and restricts movement of the die 3 in the X direction and movement in the Y direction. Thereby, the die 3 is positioned with respect to the die holder 5 in the X direction and the Y direction.

  The die holder 5 has a die placement portion 13 on which the die 3 can be placed. The die mounting portion 13 is connected to the lower end of the side wall 12 and is formed in an annular shape (frame shape) having the Z direction as an axial direction. The die 3 is placed directly in contact with the upper surface of the die placing portion 13 or indirectly through the height adjusting member 4. The die 3 is positioned with respect to the die holder 5 in the Z direction by the lower surface 3b of the die 3 coming into contact with the die mounting portion 13. For example, the height of the upper surface 3 a of the die 3 is set so as to partially protrude from the upper surface of the die holder 5.

  The die placement unit 13 includes a plurality of positioning recesses 14a to 14f into which the pins 11 can be inserted. In the present embodiment, each of the recesses 14 a to 14 f has a groove shape, and is formed on the inner peripheral surface of the annular die mounting portion 13 from the upper surface downward. In addition, when the recessed parts 14a-14f are seen from a Z direction, it is formed in the state extended in the radial direction from the internal peripheral surface of the die mounting part 13. FIG. FIG. 2B is a plan view of the die placement unit 13 as viewed from above. As shown in FIG. 2B, the die mounting portion 13 includes a plurality of recesses 14a to 14f. The recess 14a is disposed at 0 °, the recess 14b is 45 °, the recess 14c is 90 °, the recess 14d is 180 °, the recess 14e is −90 ° (270 °), and the recess 14f is −45 ° (315 °). ). In addition, the number and position of the concave portions 14 for position adjustment provided in the die placement unit 13 are arbitrary and are not limited to the illustrated form.

  Each of the plurality of recesses 14a to 14f extends radially outward from the inner peripheral surface of the annular die mounting portion 13, and the tip portion of the inner surface is curved in a semicircular shape. In each of the recesses 14a to 14f, the width of the groove and the semicircular shape of the tip end portion are set in accordance with the shape of the pin 11 of the die 3, and the pin 11 can be inserted into any of the recesses 14a to 14f. The die 3 is positioned in the rotational direction with respect to the die holder 5 by restricting the rotation around the axis parallel to the Z direction by inserting the pin 11 into any of the recesses 14 a to 14 f.

  Of the recesses 14a to 14f, the recess into which the pin 11 of the die 3 is inserted is selected so that the rotational positions of the punch 2 and the die 3 are aligned. For example, in FIG. 1, the end surface 2 a of the punch 2 has a rectangular shape having a side parallel to the X direction, and the side of the opening 10 of the upper surface 3 a of the die 3 is parallel to the X direction. The position is set to 0 °, and the insertion destination of the pin 11 is set to the concave portion 14a arranged at the 0 ° position. Further, when a rectangular hole having a side inclined by 45 ° with respect to the X direction is formed in the plate material, the punch 2 and the die 3 are held in a state rotated ± 45 ° from the state of FIG. The insertion destination is set to the concave portion 14b or the concave portion 14f arranged at a position of ± 45 °.

  Thus, when the number of positioning pins 11 provided on the die 3 is one, the number of the concave portions used for positioning the die 3 is one among the plurality of concave portions 14a to 14f. For example, when the insertion destination of the pin 11 is set to the recess 14a, the pin 11 is not inserted into the recesses 14b to 14f other than the recess 14a. In addition, the recessed parts 14a-14f are not limited to being groove shape. For example, a hole shape into which the pin 11 can be inserted may be used.

  Generally, as the punching process of the plate material is repeated, the edge of the opening 10 of the die 3 is worn. When the edge of the opening 10 is rounded due to wear, the amount of burrs generated during punching increases. Therefore, for example, when the burr exceeds an allowable amount, the die 3 is reused in a state where the upper surface 3a is polished and the corner of the edge of the opening 10 is left. When the worn die 3 is reused by polishing, a reduction amount (polishing amount) of the thickness (height or dimension in the Z direction) of the die 3 by polishing is, for example, about 0.2 mm. It is appropriately set according to the degree of edge wear. When the die 3 whose thickness is reduced by polishing is directly placed on the die placing portion 13, the height of the upper surface 3a of the die 3 is lowered. In order to process the plate material, the upper surface 3a of the die 3 is adjusted to a preset height. When the thickness of the die 3 decreases, it is necessary to adjust the height of the die 3 by the height adjusting member 4.

  The height adjusting member 4 is disposed between the die 3 and the die placing portion 13. The height adjusting member 4 is arranged inside the side soldier 12 of the die holder 5 in a state where the die 3 is placed on the die placing portion 13. In this state, the upper surface of the height adjusting member 4 is in contact with the lower surface 3 b of the die 3, and the lower surface of the height adjusting member 4 is in contact with the upper surface of the die mounting portion 13. The height adjustment member 4 in FIG. 1 includes a first adjustment member 20 and a second adjustment member 21. The first adjustment member 20 is disposed on the uppermost side (side closer to the die 3) among the height adjustment members 4. Note that whether or not the second adjustment member 21 is used is arbitrary, and only the first adjustment member 20 may be used.

  The first adjustment member 20 includes a main body 22, a plurality of pieces 23a and 23b, and a plurality of first openings 24a. The main body portion 22 is formed in a plate shape and a ring shape (frame shape), and the outer diameter thereof is substantially the same as the outer diameter of the die placement portion 13 of the die holder 5 (the inner diameter of the region surrounded by the side wall 12). The first adjusting member 20 is positioned in the X direction and the Y direction with respect to the die holder 5 when the outer periphery of the main body portion 22 contacts the side wall 12. For example, a metal such as stainless steel is used for the first adjustment member 20, but a resin or the like may be used.

  The upper surface of the main body 22 is in contact with the lower surface 3 b of the die 3. The upper surface and the lower surface of the main body portion 22 may be formed smoothly or may be formed in a rough surface having irregularities. When only the first adjustment member 20 among the height adjustment members 4 is disposed between the die 3 and the die placement portion 13, the height of the die 3 is adjusted upward by the thickness of the main body portion 22. The thickness of the main body portion 22 is set according to the adjustment amount of the height of the die 3. For example, when the amount of decrease in the thickness of the die 3 by one polishing is 0.2 mm, the thickness of the main body portion 22 is set to 0.2 mm, for example. However, the thickness of the main body portion 22 may be larger or smaller than the amount of decrease in the thickness of the die 3 by one polishing, for example. Further, the thickness of the main body 22 may be set to a natural multiple of the amount of decrease in the thickness of the die 3 by one polishing, for example, may be set to 0.4 mm, 0.6 mm, or the like. For example, the die 3 is formed so as to withstand use even when the thickness reduction amount due to polishing reaches 2 mm, and the thickness of the main body 22 is set to be equal to or less than the upper limit (for example, 2 mm) of the thickness reduction amount due to polishing. The

  3A is a perspective view showing an example of the first adjustment member 20, FIG. 3B is a plan view of the first adjustment member 20 viewed from the Z direction, and FIG. 3C is the first adjustment member. It is the side view which looked at from the Y direction. As shown in FIG. 3, the first adjustment member 20 includes a plurality of pieces 23 a and pieces 23 b. The piece part 23a and the piece part 23b are symmetrically arranged with respect to the central axis of the first adjustment member 20, as shown in FIG. The pieces 23a and 23b are arranged so as to be inserted into any of the above-described recesses 14a to 14f. For example, the piece portion 23b is arranged in the −X direction (position of −90 °) in a state where the piece portion 23a is arranged in the X direction (position of 90 °). The pieces 23 a and 23 b are respectively disposed on the inner peripheral side of the main body 22.

  As shown in FIG. 3C, the pieces 23a and 23b protrude from the main body 22 in the thickness direction (−Z direction), respectively. The pieces 23 a and 23 b are formed integrally with the main body 22. For example, when forming the main body portion 22 by punching a metal plate that is a base material of the first adjustment member 20, the portions corresponding to the pieces 23 a and 23 b are also simultaneously cut and bent, 23a and 23b are formed. The pieces 23 a and the like may be formed separately from the main body 22 and joined to the main body 22.

  The pieces 23a and 23b can be inserted into the recesses 14 of the die mounting portion 13, respectively. For example, the piece 23a is inserted into the recess 14c, and in this state, the piece 23b is inserted into the recess 14e. The first adjusting member 20 is configured such that the rotation about the axis parallel to the Z direction is suppressed by inserting the piece 23 a or the like into the recess 14 c or the like, and the rotation direction around the Z direction with respect to the die mounting portion 13 is Positioned. Note that the number of pieces 23a and the like provided in the first adjustment member 20 may be one, or may be three or more.

  The plurality of first openings 24 a to 24 d are formed in a state in which the outer peripheral side of the main body 22 is opened by cutting out from the outer peripheral side of the main body 22. However, the first opening 24a and the like are not limited to the illustrated form. For example, the first opening 24a or the like may have a cutout shape in which the inner peripheral side of the main body 22 is opened, and the recess 14a and the like such as a through hole can be exposed. Any shape can be applied. Each of the first openings 24 a to 24 d is formed in a shape and a size capable of penetrating the pin 11 of the die 3. As shown in FIG. 3B, in the state where the piece 23a is disposed at 90 °, the first opening 24a is disposed at 0 °, the first opening 24b is 45 °, and the first opening 24c is 180 °, the first opening 24d is arranged at −45 °.

  As shown in FIG. 1, the first openings 24 a to 24 d are, for example, in a state where the pieces 23 a and 23 b are inserted into the recesses 14 c and 14 e of the die mounting portion 13 (hereinafter referred to as a piece inserted state). It arrange | positions so that the other recessed parts 14a, 14b, 14d, and 14f may be exposed. The first openings 24a to 24d are arranged so that at least the recesses into which the pins 11 are inserted are exposed among the plurality of recesses 14a to 14f in the one-part insertion state. Therefore, the pin 11 of the die 3 can be inserted into any of the recesses 14a, 14b, 14d, and 14f exposed in the first openings 24a to 24d in the one-piece insertion state.

  The first adjustment member 20 is positioned with respect to the die placement portion 13 by inserting the pieces 23 a and 23 b into any of the recesses 14 a to 14 f of the die placement portion 13. Thereby, the position shift of the 1st adjustment member 20 and the die mounting part 13 is suppressed, and it is 1st with respect to the recessed part of the insertion destination of the pin 11 of the die | dye 3 among the recessed parts 14a-14f of the die mounting part 13. FIG. The openings 24a to 24d are positioned. Therefore, it is avoided that the concave portion of the insertion destination of the pin 11 is inadvertently blocked by the first adjusting member 20, and the pin 11 of the die 3 can be easily inserted into the concave portion of the die mounting portion 13.

  When the height adjustment amount by the first adjustment member 20 is insufficient with respect to the target height value of the die 3, the second adjustment member 21 and the upper surface 13a of the die placement portion 13 It is arranged between. The second adjustment member 21 has a plate shape, and the upper surface thereof is in contact with the lower surface of the first adjustment member 20, and the lower surface thereof is in contact with the upper surface of the die placement unit 13. When the first adjustment member 20 and the second adjustment member 21 are disposed between the die 3 and the die placement portion 13, the height of the die 3 is determined so that the main body portion 22 of the first adjustment member 20 and the second adjustment member It is adjusted upward by a total thickness of 21. The thickness of the second adjustment member 21 may be set in accordance with, for example, the thickness of the die 3 that has been reduced by polishing. In this case, for example, the amount by which the thickness of the die 3 is reduced by the first polishing can be adjusted by the first adjusting member 20, and the amount by which the thickness of the die 3 is reduced by the second polishing can be adjusted by the second adjusting member 21. It becomes.

  For example, a metal such as stainless steel is used for the second adjustment member 21, but a resin or the like may be used. The second adjustment member 21 may be made of the same material as the first adjustment member 20 or may be made of a different material. Moreover, the 2nd adjustment member 21 may be formed in the same thickness as the 1st adjustment member 20, and may be formed in a different thickness.

  A plurality of second adjusting members 21 may be used. For example, when the adjustment amount by the first adjustment member 20 and the second adjustment member 21 is insufficient for the decrease in the thickness of the die 3 due to the third or more polishing, a plurality of second adjustment members 21 are used. Also good. Alternatively, a plurality of first adjustment members 20 having different thicknesses may be prepared, and the first adjustment member 20 having the optimum thickness may be selected and used. Alternatively, a plurality of second adjustment members 21 having different thicknesses may be prepared, and the second adjustment member 21 having the optimum thickness may be selected and used.

  FIG. 4A is a perspective view showing an example of the second adjustment member 21, and FIG. 4B is a plan view of the second adjustment member 21 seen from the thickness direction. The second adjustment member 21 is provided in an annular and plate shape like the first adjustment member 20, and includes a plurality of notches 30a and 30b and a plurality of second openings 31a to 31d.

  The cutout portions 30 a and 30 b are formed by cutting out so as to open to the inner peripheral side of the second adjustment member 21. The notches 30a and 30b are formed in a convex shape (or stepped shape) in plan view so as to be wide in the circumferential direction on the inner peripheral side and narrow in the circumferential direction on the outer peripheral side (FIG. 5C). The shape of the notches 30a and 30b may be the same, but may be different.If the shapes of the notches 30a and 30b are the same, the piece of the first adjustment member 20 is independent of the front and back of the second adjustment member 21. The notches 30a and 30b are not limited to those shown in the figure, and any shape can be used as long as the pieces 23a and 23b can be inserted. For example, instead of a shape in which the inner peripheral side of the second adjustment member 21 is cut out, a shape such as a through hole penetrating the second adjustment member 21 in the thickness direction may be used.

  The notch 30 a and the notch 30 b are arranged symmetrically with respect to the central axis of the second adjustment member 21. For example, the notch 30b is disposed in the −X direction (−90 ° position) in a state where the notch 30a is disposed in the X direction (90 ° position). The notches 30a and 30b are formed at positions where the pieces 23a and 23b of the first adjustment member 20 can be inserted. The second adjustment member 21 is positioned with respect to the first adjustment member 20 by inserting the pieces 23a, 23b of the first adjustment member 20 into the notches 30a, 30b. The pieces 23a and 23b of the first adjustment member 20 are inserted into the recesses 14c and 14e of the die mounting portion 13 through the notches 30a and 30b (see FIG. 1).

  The plurality of second openings 31a to 31d are arranged such that the second opening 31a is disposed at 0 °, the second opening 31b is disposed at 45 °, with the notch 30a disposed at 90 °, and the second opening 31b is disposed at 45 °. The part 31c is disposed at 180 °, and the second opening 31d is disposed at −45 °.

  The second openings 31a to 31d are respectively the first openings 24a to 24d of the first adjustment member 20 with the pieces 23a and 23b of the first adjustment member 20 inserted into the notches 30a and 30b. Each communicates. Therefore, even when both the first adjustment member 20 and the second adjustment member 21 are used, the recess 14a, the recess 14b, the recess 14d, and the recess 14f are formed in the first openings 24a to 24d and the second opening 31a. It is in the state exposed by ~ 31d. Thereby, the pin 11 of the die 3 can be inserted into the concave portion 14a of the die mounting portion 13 or the like via the first openings 24a to 24d and the second openings 31a to 31d (see FIG. 1).

  The second adjustment member 21 is positioned with respect to the first adjustment member 20 and the die placement portion 13 by inserting the pieces 23a and 23b of the first adjustment member 20 into the notches 30a and 30b. . Therefore, the positional deviation between the second adjustment member 21 and the die placement portion 13 is suppressed, and the recess 14a at the insertion destination of the pin 11 of the die 3 is prevented from being blocked by the second adjustment member 21. Therefore, even when both the first adjustment member 20 and the second adjustment member 21 are used, the pin 11 of the die 3 can be easily inserted into the concave portion 14a of the die mounting portion 13 or the like.

  Incidentally, as shown in FIG. 1, the adjustment member 4 is placed on the die placement unit 13 with the first adjustment member pieces 23 a and 23 b facing downward. At that time, by holding the second adjustment member 21 on the first adjustment member 20, the first adjustment member 20 and the second adjustment member 21 can be handled as a unit, which improves the handleability for the operator. Can do. In the present embodiment, locking portions 33 a and 33 b that hold the second adjusting member 21 by locking a part of the second adjusting member 21 are provided on the pieces 23 a and 23 b of the first adjusting member 20. The second adjustment member 21 is held by the first adjustment member 20 by the locking portion 33a and the like, and is prevented from being detached from the first adjustment member 20. Hereinafter, the locking portions 33a and 33b will be described.

  FIG. 5A is a view of the piece 23a (see FIG. 3A) of the first adjustment member 20 seen in the X direction, and FIG. 5B is a view of the piece 23a seen from the Y direction. FIG. 5C is a view of the piece 23a as viewed from the Z direction. As shown in FIG. 5A, the piece 23a is plate-shaped and is formed in a T-shape with the tip portion expanded. The piece portion 23a has a base portion 34a and a locking portion 33a. The base portion 34a is continuous with the main body portion 22 and extends in a straight strip shape. The locking portion 33a is disposed on the distal end side of the base portion 34a and is continuous with the base portion 34a. The locking portion 33a protrudes in the Y direction (the circumferential direction of the first adjustment member 20) from the base portion 34a.

  Further, as shown in FIG. 5B, for example, the piece portion 23 a has the same thickness in the base portion 34 a and the locking portion 33. The piece portion 23 a extends substantially vertically from the main body portion 22 of the first adjustment member 20. The locking portion 33 is slid from the −X direction with respect to the cutout portion 30 and is disposed in the cutout portion 30.

  As shown in FIG. 5C, the width L1 of the base portion 34a is set to be narrower than the width L2 of the first portion 30a1 located on the outer peripheral side of the cutout portion 30a of the second adjustment member 21. The width L3 of the locking portion 33a is set to be wider than the width L2 of the first portion 30a1 of the cutout portion 30a and narrower than the width L4 of the second portion 30a2 located on the inner peripheral side. The locking portion 33a is formed at a position where the plurality of second adjustment members 21 can be held. For example, the length from the main body portion 22 to the locking portion 33 (the length of the base portion 34a in the Z direction) is set to be equal to or greater than the total thickness of the plurality of second adjustment members 21 stacked. When the second adjustment member 21 moves in the −Z direction from the first adjustment member 20, the second adjustment member 21 is caught by a step portion between the base portion 34 a and the locking portion 33 a and is prevented from coming off from the first adjustment member 20. Thereby, for example, even when the operator holds the first adjustment member 20 with the part 23a or the like facing downward, the second adjustment member 21 does not fall, and installation on the die placement portion 13 is facilitated. .

  6A is a view of the piece 23b (see FIG. 3A) viewed from the X direction of the first adjustment member 20. FIG. FIG. 6B is a view of the piece 23b as seen from the Y direction. As shown in FIG. 6 (A), the piece portion 23b is a straight strip and is different from the piece portion 23a in FIG. 5 (A) in that the width L5 is substantially uniform. The width L5 of the piece 23b is set narrower than the width L6 of the notch 30b. In addition, since the notch part 30b is the same shape as the notch part 30a, the width L6 is the same as the width L2 or the width L4.

  The piece portion 23b has a base portion 34b and a locking portion 33b. The base portion 34 b extends substantially vertically from the main body portion 22 of the first adjustment member 20. The locking portion 33b is disposed on the distal end side of the base portion 34b, and is curved toward the opposite side (−X direction) of the notch portion 30b than the base portion 34b. The locking portion 33b is formed integrally with the base portion 34b, for example, and is a portion bent in the −X direction with respect to the base portion 34b. In addition, the point which the latching | locking part 33b is formed in the position which can hold | maintain the several 2nd adjustment member 21 is the same as the above-mentioned latching | locking part 33a. The engaging portion 33b may bend the tip portion in the −X direction instead of bending the tip portion of the piece portion 23b.

  FIG. 7A is a view of the locking portion 33c according to the first modification viewed from the Y direction. The locking portion 33c has a part of the piece portion 23c formed by a press or the like and protrudes in the −X direction from the base portion 34c. As described above, the locking portion 33c may be a portion of the piece portion 23c that protrudes from the base portion 34c toward the outside of the notch 30b with respect to the base portion 34c. In addition, the shape seen from the X direction is arbitrary, and the latching | locking part 33c may be a polygonal shape other than circular or elliptical shape.

  FIG. 7B is a view of the locking portion 33d according to the second modification viewed from the Y direction. The locking portion 33d is formed in the piece portion 23d with a metal material such as solder. The locking portion 33d is, for example, hemispherical, and protrudes toward the outside of the cutout portion 30b with respect to the base portion 34d. As described above, the engaging portion 33d may be a member formed separately from the base portion 34d and bonded or joined thereto.

  Next, a punch press in which the height adjusting member 4 as described above is used will be described. FIG. 8A is a side view showing an example of the punch press 1. This punch press 1 uses the die holder 5 according to the above-described embodiment. In the following description, components that are the same as or equivalent to those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified. A punch press 1 shown in FIG. 8A is a turret punch press. In the punch press 1, an upper turret 52 is held on an upper frame 50 via a rotation shaft 51, and a lower turret 55 is held on a lower frame 53 via a rotation shaft 54.

  The upper turret 52 and the lower turret 55 are both formed in a disc shape, and are formed so as to be rotatable about the rotation shaft 51 and the rotation shaft 54 by driving a driving device (not shown) such as a motor. The upper turret 52 and the lower turret 55 are arranged facing each other. A plurality of punches 2 are mounted on the upper turret 52 side by side in a circumferential direction around the rotation shaft 51. A plurality of dies 3 are mounted on the lower turret 55 side by side in a circumferential direction around the rotation shaft 54.

  The upper turret 52 and the lower turret 55 are rotated by a driving device (not shown), and a pair of punches 2 and dies 3 to be paired are selected as the punch position P. The punch 2 at the punch position P is lowered by the upper drive unit 56. The punch press 1 performs the forming process by placing the plate material W at the punch position P and sandwiching the plate material W between the punch 2 and the die 3.

  A rail 57 along the Y direction is formed on the upper surface of the lower frame 53, and a movable table 58 that can be moved by a driving device (not shown) is disposed along the rail 57. The movable table 58 is provided with a carriage 59 along the X direction. An X-direction guide (not shown) is formed on the carriage 59, and a cross slide 60 that can be moved by a driving device (not shown) along the X-direction guide is installed. The cross slide 60 is provided with two or more plate material holders 61 spaced in the X direction. The plate material W is held by the plate material holder 61 and is conveyed by movement in the X direction by the cross slide 60 and movement in the Y direction by the movable table 58, and the processing target position is positioned at the punch position P.

  Driving of each part of the punch press 1, for example, rotation of the upper turret 52 and lower turret 55, driving of the punch 2 and die 3, and movement of the cross slide 60 and movable table 58 may be controlled by a control unit (not shown). Alternatively, the operator may perform manual operation such as driving the cross slide 60 and the movable table 58 as appropriate.

  FIG. 8B is a perspective view showing an example of the lower turret 55. The lower turret 55 includes a disk-shaped base 65, a die holder 5 that can be attached to and detached from the base 65, and a die 3 that is held by the die holder 5. A plurality of die holders 5 can be attached to the base 65, and a through hole 65 a is provided for each attachment position of the die holder 5. The through-hole 65a is used for discharging slag (processing waste) generated by punching downward. The die holder 5 is attached to the base 65 with a bolt or the like while holding the die 3, for example.

  When the die 3 is maintained or replaced, the die holder 5 is removed from the base 65 by, for example, removing a bolt. The die 3 is removed from the die holder 5 and the other third is placed. Moreover, when mounting the die | dye 3 which the upper surface 3a was grind | polished and reduced in thickness, it mounts on the die | dye mounting part 13 of the die holder 5 via the height adjustment member 4 (refer FIG. 1). The height adjusting member 4 according to the above-described embodiment can be easily and accurately positioned with respect to the die holder 5, and the height of the die can be easily adjusted. Therefore, the time required for maintenance and replacement of the die 3, Time and effort can be reduced.

  The technical scope of the present invention is not limited to the above-described embodiment or modification. For example, one or more of the requirements described in the above embodiments or modifications may be omitted. In addition, the requirements described in the above embodiments or modifications can be combined as appropriate. For example, in the above-described embodiment, the locking portions 33a and 33b are provided on both of the pieces 23a and 23b of the first adjustment member 20, but a locking portion may be provided on either one of them. In the above-described embodiment, the locking portions 33a and 33b having different forms are formed on the pieces 23a and 23b. However, the same locking portion may be formed.

DESCRIPTION OF SYMBOLS 1 ... Punch press, 2 ... Punch, 3 ... Die, 4 ... Height adjustment member, 5 ... Die holder, 11 ... Pin, 13 ... Die mounting part, 14a -14f ... concave portion, 20 ... first adjustment member, 21 ... second adjustment member, 23a, 23b ... single piece, 24a-24d ... first opening, 30a, 30b ... -Notch part, 31a-31d ... 2nd opening part, 33a-33d ... Locking part

Claims (6)

A height for adjusting the height of the die, which is arranged between a die provided with a pin protruding downward and a die placement portion provided on a die holder and provided with a plurality of positioning recesses into which the pin can be inserted. An adjustment member,
A first adjustment that is provided in an annular and plate shape, and that can be inserted into the recess, and a first opening that exposes the other recess when the piece is inserted into any of the recesses. A height adjusting member having a member.   An annular and plate-like shape, which can be arranged between the first adjustment member and the die mounting portion, can be inserted into the cutout portion, and the piece can be inserted into the cutout portion. The height adjustment member according to claim 1, further comprising a second adjustment member including a second opening communicating with the first opening in a state where the first adjustment is performed.   The height adjusting member according to claim 1, wherein the first adjusting member includes a plurality of the pieces.   The height adjustment member according to claim 3, wherein at least one of the plurality of pieces includes a locking portion that locks a part of the second adjustment member and holds the second adjustment member.   The height adjusting member according to claim 4, wherein the locking portion is formed at a position where a plurality of the second adjusting members can be held. A die holder that holds a die including a pin protruding downward and has a die mounting portion including a plurality of recesses into which the pin can be inserted,
The height adjusting member according to any one of claims 1 to 5 is disposed between the die and the die mounting portion, and the height of the die is adjusted by the height adjusting member. Die holder.

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