JP2011031379A - Connecting member, tool, and chuck claw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and quickly connect other side member only by elastically deforming one side member and simply and quickly carry out exchanging by detaching only other side member. <P>SOLUTION: The connecting member is repeatably connected by two members. The one side member 1 has a fitting holding part 1a for holding the other side member 2, and the part of the fitting holding part 1a is elastically deformably composed to the direction to open the fitting holding part 1a by a pressurizing force from the outside. The other side member 2 cannot be normally inserted into the fitting holding part 1a, and has an outer peripheral contour part 2a having a fitting shape which can be slidably inserted to and extracted from the fitting holding part 1a only in a state that the fitting holding part 1a is opened by an elastic deformation. The other side member 2 is slidably inserted into the fitting holding part 1a under the state that the one side member is elastically deformed in a state that the fitting holding part 1a is opened by the pressurizing force, and the other side member 2 is connected to the fitting holding part 1a by an elastic restoring force of the one side member 1 by the release of the pressurizing force. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a coupling member, a tool, and a chuck claw formed by repeatedly coupling two members.

  For example, as a tool (tool) used for cutting such as a lathe or a planer, a tool that is formed of the same material with a tool body and a cutting edge part integrally formed, or a tool body and a tip (blade) are separated. There are those formed and brazed with a tip made of a super hard material at the tip of the bite body, and further one in which the tip is integrated with the bite body by screwing or the like.

  However, among the above-mentioned conventional tools, the tool body and the chip are inseparably integrated in the bulky tool with the tool body and the chip part formed integrally or with the brazed tool. There was a problem that it was uneconomical. In addition, for a tool that is integrated with the tool body by screw tightening, etc., only the tip part can be replaced.However, when replacing the tool, loosen the screw from the tool body and remove it from the tool body. After that, the screw was tightened and the tip was mounted on the bite body, so that the replacement work was very complicated and time-consuming.

  Therefore, according to the present invention, it is possible to easily and quickly couple the other member only by elastically deforming one member. When the other member is damaged or replaced with another member, the entire member is replaced. It is an object of the present invention to provide a coupling member, a tool, and a chuck claw that can be easily and quickly replaced by removing only the other member by elastically deforming one member, and can be replaced at low cost.

In order to solve the above problems, the invention according to claim 1 of the present application is a coupling member formed by repeatedly coupling two members, and one member has a fitting holding portion for holding the other member. In addition, the fitting holding portion is configured to be elastically deformable in the direction to open or close the fitting holding portion by external pressure, while the other member is always directed to the fitting holding portion. The fitting holding part has a fitting-shaped outer peripheral contour part that can be inserted into and removed from the fitting holding part only when the fitting holding part is opened or closed by elastic deformation. The other member is slid into the fitting holding portion under the state where the fitting holding portion is elastically deformed to the open or closed state by the applied pressure, and fitted by the elastic restoring force of the one member by releasing the applied pressure. The other member is connected to the joint holder. The features.
The fitting holding part is a concept including a fitting holding groove, a bottomed fitting holding hole, and a fitting holding hole penetrating therethrough.

  The invention according to claim 2 of the present application is a coupling member formed by repeatedly coupling two members, and one member has an elliptical fitting holding hole for holding the other member. At the same time, the fitting holding hole portion is formed to be elastically deformable so that the fitting holding hole becomes circular by external pressure, while the other member is normally inserted into the fitting holding hole. The fitting holding hole has a circular contour portion with a fitting shape that can be inserted into and removed from the fitting holding hole only when the fitting holding hole becomes circular due to elastic deformation. The other member is slid into the fitting holding hole under a state where the fitting holding hole is elastically deformed so as to have a circular shape, and the elastic holding force of the one member is released to the fitting holding hole by releasing the applied pressure. The other member is connected.

  Further, in the invention according to claim 3 of the present application, one member in the configuration according to claim 1 or 2 has a split groove for facilitating elastic deformation, while it can be inserted into and removed from the split groove, and the split groove portion by insertion And a wedge body that urges the fitting holding portion in a direction to close the fitting holding portion.

  In the invention according to claim 4 of the present application, the one member in the configuration according to claim 1 or 2 has a plate-like base portion whose both end portions protrude outward, and engages with both end portions of the plate-like base portion. A U-shaped jig body with a hook part, a fastening bolt screwed into the center part of the jig body so as to be able to advance and retreat, and a fastening plate rotatably supported at the tip of the fastening bolt And a jig for elastically deforming one of the members by tightening a tightening bolt in a state where the engagement hook portions of the jig main body are engaged with both end portions of the plate-like base portion.

Further, the invention according to claim 5 of the present application is a tool in which a tip member is repetitively coupled to the tip of the tool body, and the tool body is fitted with an open end that holds the tip member at the tip. While having a joint holding portion, the fitting holding portion portion is configured to be elastically deformable in the direction to open or close the fitting holding portion by external pressure, while the tip member is normally fitted and held. Fitting shape that cannot be inserted into the part, can be inserted into and removed from the fitting holding part only when the fitting holding part is opened or closed by elastic deformation, and cannot be rotated and pulled out from the open end. The tip member is slid and inserted into the fitting holding portion under the state where the tool main body is elastically deformed to the open or closed state by applying pressure. Tool body tip by releasing pressure Characterized by being adapted for coupling the tip member to the fitting holding portion by the elastic restoring force.
The fitting holding part is a concept including a fitting holding groove and a bottomed fitting holding hole.

  Furthermore, the invention according to claim 6 of the present application is a chuck claw in which a claw body is repetitively coupled to the tip end portion of the chuck arm, and the chuck arm holds the claw body extending in the width direction on the inner surface of the tip end portion. While having a fitting holding groove that is open at one end, the fitting holding groove portion is configured to be elastically deformable in the direction to open or close the fitting holding groove by external pressure, The claw body has a half-cylinder shape and cannot be inserted into the fitting holding groove at all times, and can only be inserted into and removed from the fitting holding groove when the fitting holding groove is opened or closed by elastic deformation. A fitting-shaped outer peripheral contour portion that can be rotated and cannot be removed from the open end is formed, and a clamping surface that matches the shape of the material is formed on the inner surface of the nail body, and the chuck Applying pressure to the arm tip The sliding outer surface of the claw body is slid into the fitting holding groove under the state where the fitting holding groove is elastically deformed in the opening or closing direction, and the fitting holding groove is fitted and held by the elastic restoring force of the tip of the chuck arm. The nail body is connected to the groove.

  According to the coupling member of the present invention, the one member is elastically deformed by inserting the other member into the fitting holding portion, and then the elastic member is released. Can be combined. Also, when the other member is damaged and replaced with a new one, or when it is replaced with a different shape, it is possible to remove only the other member by simply elastically deforming one member without replacing both members. Can be replaced easily and quickly. As a result, mounting and replacement work can be performed quickly and easily, and can be replaced at low cost.

  In addition, one of the members has a split groove for facilitating elastic deformation, and includes a wedge body that can be inserted into and removed from the split groove and biased in a direction to open the split groove portion by insertion and close the fitting holding portion. If this is the case, the elastic restoring force of the one member can be positively increased, and the connection between the one member and the other member can be further strengthened.

  In addition, one member has a plate-like base portion whose both ends protrude outwardly, while a U-shaped jig body having an engagement hook portion engaged with both ends of the plate-like base portion, and the center of the jig body A fastening bolt that is screwed forward and backward with a fastening portion, and a fastening plate that is rotatably supported at the tip of the fastening bolt, and engages an engaging hook portion of the jig body with both ends of the plate-like base portion. If the structure is provided with a jig that elastically deforms one member by tightening the tightening bolt in the combined state, the elastic deformation of the one member can be easily and easily performed by this jig. .

  Further, according to the tool of the present invention, with the above-described configuration, the tool main body is elastically deformed, a tip member such as a tip is inserted into the fitting holding portion, and then the elastic deformation is released. The tip member can be easily and quickly coupled to the main body. In addition, when replacing the tip member with a new one due to damage or the like, or when replacing the tip member with a different shape, the tool body can be elastically deformed by simply deforming the tip of the tool body without replacing the entire tool. Only the tip member can be removed from the fitting holding part of the main body and can be replaced easily and quickly. As a result, mounting and replacement work can be performed quickly and easily, and can be replaced at low cost.

  Furthermore, according to the chuck claw of the present invention, with the above-described configuration, the tip end portion of the chuck arm is elastically deformed, the claw body is inserted into the fitting holding groove, and then the elastic deformation is released, whereby the claw body is attached to the chuck arm. Can be easily and quickly combined. In addition, when replacing the claw part with a new one due to wear or the like, or when replacing the claw part with another shape, the fitting holding groove is in a state where the tip of the chuck arm is elastically deformed. After removing the claw body from the chuck arm, the new claw body is inserted along the fitting holding groove to release the elastically deformed state of the chuck arm tip. A nail body can be attached. As a result, since only the nail body can be directly removed from the tip of the chuck arm and replaced, the replacement cost can be reduced, and the chuck arm is not bothered to be removed from the support member. It is no longer necessary to adjust the centering of the part and the opening / closing timing, and the replacement work can be performed quickly and easily. Further, even if the length of the claw portion is longer than the thickness of the chuck arm depending on the dimensions of the material, the chuck arm and the claw body are manufactured separately. Are easy and easy to mass-produce and can be obtained at low cost. In addition, it is possible to freely select and use a claw body of a material that matches the material of the material to be used regardless of the material of the lower chuck arm, for example, from a material corresponding to a material made of a soft material By selecting and using the nail body, it is possible to prevent the material from being damaged.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a connecting member A formed by repeatedly connecting two members. As shown in FIGS. 1 and 2, one member 1 has a block shape and one end is open to the front surface. While having a groove-shaped fitting holding groove 1a, the fitting holding groove 1a is configured to be elastically deformable in a direction to open the fitting holding groove 1a to the outside by external pressure. As an elastically deformable configuration, a split groove 1b extending toward the fitting and holding groove 1a is formed in the middle portion in the longitudinal direction of the back surface facing the fitting and holding groove 1a, and on the left with the dividing groove 1b as a boundary. For example, the right outer surface is inclined inward by about 5 ° with respect to the outer surface, and screw holes 1c and 1c are formed on the left and right outer surfaces so as to sandwich the split groove 1b.

  On the other hand, the other member 2 cannot be inserted into the fitting holding groove 1a at all times, and the dovetail groove that can be slid into and out of the fitting holding groove 1a only when the fitting holding groove 1a is opened by elastic deformation. The outer peripheral contour portion 2a has a shape, and the inner surface has a semicircular holding surface 2b. In the embodiment shown in the figure, the inner surface of the other member 2 is provided with a semicircular holding surface 2b. However, other shapes may be used, and the holding surface 2b is not provided. It's okay.

  Further, in FIG. 3A, reference numeral 3 denotes a jig for elastically deforming the fitting holding groove 1a of the one member 1, and is a flat plate having insertion holes 4a and 4a that match the screw holes 1c and 1c. And the fastening bolts 5 and 5 that are inserted through the insertion holes 4a and 4a and screwed into the screw holes 1c and 1c.

  Next, the operation of the above-described coupling member A will be described.

  In use, as shown in FIG. 3B, the fastening body 4 of the jig 3 is placed along the outer surface of the one member 1 with the dividing groove 1b as a boundary, and the fastening bolt 5, 5 is screwed into the screw holes 1 and 1c through the insertion holes 4a and 4a. As a result, as shown in FIG. 3C, both of the outer surfaces of the one member 1 with the dividing groove 1b as a boundary are both elastically deformed so as to come into surface contact with the tightening body 4 and form a straight line. That is, the jig 3 is elastically deformed in the direction to open the fitting holding groove 1a with the dividing groove 1b as a boundary, and the state is held. As a result, the fitting holding groove 1a and the outer peripheral contour portion 2a of the other member 2 are held. A gap that allows the other member 2 to be inserted / removed is formed. Thereafter, the other member 2 is fitted into the fitting holding groove 1a in such a state, and is slid and inserted into a predetermined position. Thereafter, as shown in FIG. 3D, the fastening bolts 5 and 5 are loosened and removed from the screw holes 1c and 1c, and the jig 3 is removed from the one member 1. By removing the jig 3, the elastic deformation of the one member 1 is restored, so that the one member 1 and the other member 2 are integrally coupled by the elastic restoring force as shown in FIG. 1 and FIG. Is done.

  Also, when the other member 2 is worn away and replaced with a new one or when it is replaced with another shape, the operation opposite to the joining operation described above is performed to change the one member 1 to the other. What is necessary is just to remove the member 2 and attach the new other member 2 to the one member 1 again after that. Thereby, the attachment and exchange work of the shaft 12 to the boss 11 can be easily and easily performed.

  FIG. 4 shows a structure in which the wedge body 6 can be inserted into and removed from the innermost portion of the split groove 1b. The wedge groove 6 is inserted to open the split groove 1b, that is, in a direction to close the fitting holding groove 1a. By energizing, the elastic restoring force of the one member 1 is positively increased so that a stronger connection between the one member 1 and the other member 2 can be obtained. As the wedge body 6, a driving type having a C-shaped cross section shown in FIG. 4 may be used. For example, a screw type that opens the split groove 1 b by screwing into the split groove 1 b may be used.

  Moreover, in the above embodiment, the other member 2 is inserted in a state where the one member 1 is forcibly elastically deformed in the direction to open the fitting holding groove 1a with the dividing groove 1b as a boundary, and then the fitting holding groove 1a. Although the one member 1 and the other member 2 are coupled by the elastic restoring force in the closing direction, the one member 1 is forcibly elastically deformed in the closing direction of the fitting holding groove 1a with the dividing groove 1b as a boundary. In this state, the other member 2 may be inserted in close contact, and then the one member 1 and the other member 2 may be coupled by an elastic restoring force in the direction of opening the fitting holding groove 1a.

  FIGS. 5 to 7 show a coupling member B in which a shaft 12 as the other component member is coupled to the boss 11 as one component member in a repeatable manner. As shown in FIGS. The cylindrical portion 11 has an elliptical fitting holding hole 11a, and the cylindrical portion 11 can be elastically deformed so that the fitting holding hole 11a becomes a circular shape by external pressure. It is configured. As an elastically deformable configuration, a plate-like base portion 11b having both ends projecting outward is provided at one end of the fitting holding hole 11a of the tubular portion 11 on the long axis a side, and the middle of the plate-like base portion 11b. A split groove 11c extending in the length direction is formed in the portion, and the right outer surface is inclined inward by, for example, about 5 ° with respect to the left outer surface with the split groove 11c as a boundary. Screw holes 11d and 11d are formed in the left and right outer surfaces so as to sandwich the groove 11c.

  On the other hand, the shaft 12 cannot be normally inserted into the fitting holding hole 11a, and can be slid into and out of the fitting holding hole 11a only when the fitting holding hole 11a is circular due to elastic deformation. It has a mating circular contour 12a.

  Further, in FIG. 7A, reference numeral 13 denotes a jig for elastically deforming the fitting and holding hole 11a of the boss 11, and has a flat plate shape having insertion holes 14a and 14a that match the screw holes 11d and 11d. And tightening bolts 15 and 15 that are inserted through the insertion holes 14a and 14a and screwed into the screw holes 11d and 11d.

  Next, the operation of the above-described coupling member B will be described.

  In use, as shown in FIG. 7B, the fastening body 14 of the jig 13 is placed along the outer surface of the boss 11 with the dividing groove 11c as a boundary, and the fastening bolts 15, 15 are placed. Is screwed into the screw holes 11d and 11d through the insertion holes 14a and 14a. As a result, as shown in FIG. 7C, both the outer surfaces of the boss 1 with the dividing groove 1c as a boundary are elastically deformed so that both come into surface contact with the tightening body 14 and form a straight line. That is, the jig 13 is elastically deformed so that the fitting holding hole 11a becomes circular with the dividing groove 11c as a boundary, and the state thereof is held. As a result, the outer peripheral contour of the fitting holding hole 11a and the shaft 12 is maintained. A gap is formed between the portion 12a and the shaft 12 to allow insertion / extraction. Thereafter, the shaft 12 is fitted and inserted into the fitting holding hole 11a in this state, and set at a predetermined position. Thereafter, as shown in FIG. 7D, the tightening bolts 15 are loosened and removed from the screw holes 11d and 11d, and the jig 13 is removed from the boss 11. The elastic deformation of the boss 11 is restored by removing the jig 13, and the boss 11 and the shaft 12 are coupled by the elastic restoring force as shown in FIG. 5 and FIG.

  On the other hand, when the shaft 12 is worn away and replaced with a new one or when the shaft 12 is replaced with another shape, the shaft 12 is moved from the boss 11 by performing an operation opposite to the coupling operation described above. After removing, a new shaft 12 may be attached to the boss 11 again. Thereby, the attachment and exchange work of the shaft 12 to the boss 11 can be easily and easily performed.

  FIG. 8 shows an example in which another jig 16 is used in place of the jig 13, and this jig 16 is engaged with both ends of the plate-like base portion 11b as shown in FIG. A U-shaped jig body 17 provided with engaging hooks 17a, 17a, a fastening bolt 18 screwed to the central portion of the jig body 17 so as to be able to advance and retreat, and a tip of the fastening bolt 18 to freely rotate. And a supported clamping plate 19. In this case, the boss 11 does not need a screw hole as shown in FIG. Then, as shown in FIG. 8B, the tightening bolt 18 is tightened with the jig 16 set on the boss 11. As a result, as shown in FIG. 8C, both the outer surfaces of the boss 1 with the dividing groove 11c as a boundary can be elastically deformed so that both come into surface contact with the tightening body 19 and become a straight line. Similar to the case of the previous embodiment, the other member 2 may be attached or removed under this straight line state as shown in FIG. Of course, the elastic deformation means of the one member by the combination of the plate-like base portion whose both end portions protrude outward and the jig 16 can be applied not only to the coupling member B but also to the coupling member A. In addition, the wedge body 6 used in the coupling member A may be inserted into the split groove 11 c in the boss 11 of the coupling member B to increase the elastic restoring force of the boss 11.

  9 to 11 show a cutting tool (tool) C formed by repeatedly connecting a tip (tip member) 22 to the tip of the tool body 21 in a repeatable manner. As shown in FIGS. 9 and 10, the tool body 21 fixed to the tool post (not shown) has a flat diamond-shaped bottomed split fitting holding hole 21 a formed at the tip thereof, The fitting and holding hole 21a is configured to be elastically deformable so that the fitting and holding hole 21a is opened outward by external pressure. As the elastically deformable configuration, a split groove 21b that divides the fitting holding hole 21a in a diagonal direction is formed at the distal end portion of the tool main body 21, and the split groove 21b on one side of the distal end of the tool main body 21 is formed. A portion facing the innermost end is bent in a U-shape, and screw holes 21d and 21e are formed in the bent outer surface 21c so as to sandwich the innermost end of the split groove 21b.

  On the other hand, the chip 22 cannot be normally inserted into the fitting holding hole 21a, and has a rhombus shape that can be slid into and out of the fitting holding hole 21a only when the fitting holding hole 21a is opened by elastic deformation. It has an outer peripheral contour 22a. Note that when the tip 22 is coupled to the tool body 21, a part of the cutting edge portion of the tip 22 protrudes from the tool body 21.

  Further, in FIG. 11A, reference numeral 23 denotes a jig for elastically deforming the fitting and holding hole 21a of the tool body 21, and has insertion holes 24a and 24b that match the screw holes 21d and 21e. A character-shaped tightening body 24 and tightening bolts 25 and 26 that are inserted into the insertion holes 24a and 24b and screwed into the screw holes 21d and 21e are provided. When the tightening body 24 is directed along the bent outer surface 21c of the tool body 21, the inner surface of the front end side of the tightening body 24 and the tool as shown in FIG. A gap is formed between the main body 21 and the outer surface on the front end side. Reference numerals 27 and 28 are washers.

  Next, the operation of the above-described bite C will be described.

  In use, as shown in FIG. 11B, the tightening body 24 of the jig 23 is placed along the bent outer surface 21c of the tool body 21, and the tightening bolts 25 and 26 are inserted into the insertion holes. Screwed into the screw holes 21d and 21e via 24a and 24b. As a result, as shown in FIG. 11C, the bent outer surface 21c at one side of the tip of the tool main body 21 is elastically deformed so that the tightening body 24 comes into close contact with the inner surface and has the same inclination angle. In other words, the fitting holding hole 21a is elastically deformed in the opening direction and the state is held, and as a result, a gap that allows the insertion and removal of the chip 22 is provided between the fitting holding hole 21a and the outer peripheral contour portion 22a of the chip 22. It is formed. Thereafter, the chip 22 is fitted into the fitting holding hole 21a in such a state, is slid and set at a predetermined position. Thereafter, as shown in FIG. 11D, the fastening bolts 25 and 26 are loosened and removed from the screw holes 11d and 11e, and the jig 23 is removed from the tool body 21. By removing the jig 23, the elastic deformation of the tool body 21 is restored, and as a result, the tool body 21 and the tip 22 are integrally coupled by the elastic restoring force as shown in FIGS. The

  On the other hand, when the tip 22 is worn away by use and is replaced with a new one or when it is replaced with another shape, the tool body 21 is fixed to the tool rest as described above. The tip 22 is removed from the tool body 21 by performing an operation opposite to the joining operation, and then a new tip 22 is attached to the tool body 21 again. Thereby, the attachment and replacement work of the tip 22 to the tool body 21 can be performed easily and quickly.

  12 to 14 show a spanner (tool) D formed by repeatedly connecting a base (tip member) 32 to the tip head of the tool body 31 in a repeatable manner.

  As shown in FIGS. 12 and 13, the tool body 31 is formed with a polygonal holding groove 31 a having an opening at one end at the tip of the tool body 31, and the fitting holding groove 31 a portion is applied by external pressure. The fitting holding groove 31a is configured to be elastically deformable so as to open outward. As the elastically deformable configuration, a split groove 31b is formed in the innermost part of the fitting holding groove 31a, and one end head side and one body part side of the tool body 31 so as to sandwich the split groove 31b. Screw holes 31c and 31d are formed respectively.

  On the other hand, the base 32 cannot be inserted into the fitting and holding groove 31a at all times, and has a polygonal shape that allows sliding into and out of the fitting and holding groove 31a only when the fitting and holding groove 31a is opened by elastic deformation. While having the outer periphery outline part 32a, the inner surface is provided with the engagement groove part 32b of one end opening which can be fitted in a bolt head or a nut.

  Further, in FIG. 14A, reference numeral 33 denotes a jig for elastically deforming the fitting holding groove 31a of the tool body 31, and is provided with insertion holes 34a and 34b that match the screw holes 31c and 31d. The body 34 includes tightening bolts 35 and 36 that are inserted into the insertion holes 34a and 34b and screwed into the screw holes 31c and 31d. Reference numerals 37 and 38 are washers.

  Next, the operation of the spanner D described above will be described.

  In use, as shown in FIG. 14 (a), the fastening body 34 of the jig 33 is applied to the outer surface of the connection between the head and the body of the tool body 31, and the fastening bolts 35, 36 are used. Is screwed into the screw holes 31c and 31d through the insertion holes 34a and 34b. Thereby, as shown in FIG. 14B, the connecting outer surface portion of the tool body 31 is elastically deformed so as to be in contact with the inner surface of the tightening body 34. That is, the fitting holding groove 31a is elastically deformed in the opening direction and the state is held, and as a result, the gap that allows the base 32 to be inserted / removed between the fitting holding groove 31a and the outer peripheral contour portion 32a of the base 32. Is formed. Thereafter, the base 32 is fitted into the fitting holding groove 31a in such a state, and is slid and set at a predetermined position. Thereafter, the fastening bolts 35 and 36 are loosened and removed from the screw holes 31 c and 31 d, and the jig 33 is removed from the tool body 31. By removing the jig 33, the elastic deformation of the tool body 31 is restored, and as a result, the tool body 21 and the base 32 are integrally coupled by the elastic restoring force as shown in FIG.

  On the other hand, when the base 32 is worn away by use and is replaced with a new one or when it is replaced with another shape, the tool main body is operated in the opposite direction to the joining operation described above. The base 32 is removed from 21, and then a new base 32 is attached to the tool body 21 again.

  15 to 30 show a chuck claw E of a material transfer chuck device in which a claw body is repetitively coupled to the tip of a chuck arm according to the present invention.

  Here, as shown in FIG. 15, the material transfer chuck device 40 carries the material S in and out of the die A constituting the forging station together with a punch (not shown). A cassette type chuck main body 41 having a pair of rotating shafts 42 and 43 rotated in synchronization with the forward and backward movement of the punch, and the upper ends of the cassette type chuck bodies 41 and 43 are supported by the pair of rotating shafts 42 and 43. And a movable plate 44 that supports the chuck main body 41 and moves the chuck main body 41 in the left-right direction orthogonal to the axial direction of the die A. Then, the open / close rod 45 projecting upward from the chuck body 41 is moved up and down through an appropriate transmission mechanism (not shown) that synchronizes with the forward and backward movements of the punch, thereby via an interlocking mechanism (not shown). The pivot shafts 42 and 43 are pivoted so that the pair of chuck claws E and E open and close each other. Further, the left / right movement of the chuck body 41 accompanying the left / right movement of the movable plate 44 is performed in synchronism with the forward / backward movements of the punch, similarly to the opening / closing operation of the chuck claws E, E. Since the basic configuration of the entire material transfer chuck device 40 is already known, the description of the specific configuration and operation is omitted.

  Further, the chuck claws E, E shown in FIG. 15 have upper chuck arms 50, 50 whose upper ends are supported by the rotating shafts 42, 43, and upper ends of the upper chuck arms 50, 50 are fixed bolts. The lower chuck arms 51 and 51 are detachably attached by means of 53 and 53, and the claw bodies 52 and 52 are detachably coupled to the inner surfaces of the front end portions of the lower chuck arms 51 and 51.

  Then, as shown in FIGS. 16 to 23, a structure in which the pawl bodies 52 and 52 are repeatably coupled to the lower chuck arms 51 and 51 is configured as follows. Since the chuck claws E, E are symmetrical, only the structure for coupling the claw body 52 to the lower chuck arm 51 on one side will be described below.

  First, a fitting holding groove 51a is provided on the inner surface of the tip of the lower chuck arm 51 so as to open one end for holding the claw body extending in the axial direction of the die A, and the tip of the chuck arm 51 is provided. Is configured to be elastically deformable in a direction to open the fitting holding groove 51a. As the elastically deformable configuration, the fitting holding groove 51a has a semicircular arc shape, and engaging protrusions 51b and 51b for preventing the claw body 52 from being prevented from rotating and coming off are formed at both upper and lower ends thereof. Further, as shown in FIG. 20, the tip end portion of the lower chuck arm 51 is elastically deformed, and as shown in FIG. A split groove 51c extending in the axial direction is formed, while a lower outer surface is inclined inward, for example, about 5 ° with respect to the upper outer surface with the split groove 51c as a boundary, and the split groove 51c is sandwiched therebetween. In the upper and lower outer surfaces, screw holes 51d and 51e are respectively formed. Reference numeral 51 f denotes an insertion hole for the fixing bolt 53 formed at the upper end of the lower chuck arm 51.

  On the other hand, the claw body 52 has a semi-cylindrical shape as shown in FIGS. 17 and 19 and has a length that is more than twice the thickness x dimension of the lower chuck arm 51. 51a can not be inserted, can be slidably inserted into and removed from the fitting holding groove 51a opened by elastic deformation, and is engaged with the engaging protrusions 51b and 51b at both upper and lower ends to rotate and inward. A semi-cylindrical outer peripheral contour portion 52a having engagement groove portions 52b and 52b for preventing the slipping out is formed over the entire length in the longitudinal direction. In addition, a semi-cylindrical clamping surface 52c that matches the shape of the columnar material S is formed on the inner surface of the nail body 52 over the entire length in the length direction.

  In FIG. 20, reference numeral 60 denotes a jig for elastically deforming the tip of the lower chuck arm 51, and a flat plate-like fastening body 61 having insertion holes 61a and 61b that match the screw holes 51d and 51e. And fastening bolts 62 and 63 that are inserted through the insertion holes 61a and 61b and screwed into the screw holes 51d and 51e.

  Then, as shown in FIG. 21 (a), the fastening body 61 of the jig 60 is placed along the outer surface of the lower chuck arm 51 with the split groove 51c at the tip as a boundary, and tightened. The attached bolts 62 and 63 are screwed into the screw holes 51d and 51e through the insertion holes 61a and 61b. As a result, as shown in FIG. 21 (b), both the lower outer surface and the lower outer surface of the lower chuck arm 51 are in contact with the tightening body 11 at the front end of the split groove 51c. It is elastically deformed as follows. That is, the jig 60 is elastically deformed in the direction to open the fitting holding groove 51a with the dividing groove 51c as a boundary, and the state is held. At this time, as shown in FIG. 22, a gap is formed between the fitting holding groove 51a and the outer peripheral contour portion 52a to allow the claw body 52 to be inserted and removed. Thereafter, as shown in FIG. 22, the outer peripheral contour portion 52a of the claw body 52 is fitted into the fitting holding groove 51a in such a state, and is slid and inserted, and set at a predetermined position shown in FIG. Thereafter, as shown in FIG. 23, the fastening bolts 62 and 63 are loosened and removed from the screw holes 51 d and 51 e, and the jig 60 is removed from the lower chuck arm 51. By removing the jig 60, the elastic deformation of the tip end portion of the chuck arm 51 is restored, whereby the chuck arm 51 and the claw body 52 are integrally coupled by the elastic restoring force as shown in FIG.

  Next, the operation of the chuck claw E described above will be described.

  When the nail portion 52 is worn and replaced with a new one, or when the nail portion 52 is replaced with another nail portion 52, the jig 60 is first attached as shown in FIG. Then, by tightening the tightening screws 62 and 63, the tip of the lower chuck arm 51 is elastically deformed in the direction to open the fitting holding groove 51a with the dividing groove 51c as a boundary, as shown in FIG. Hold that state. At this time, as shown in FIG. 22, a gap is formed between the fitting holding groove 51a and the outer peripheral contour portion 52a so that the claw body 52 can be slidably inserted. Under such a state, the claw body 52 is slid along the groove 51a and taken out from the fitting holding groove 51a. Then, the new claw body 52 is slid into the fitting holding groove 51a with its one end face fitted, and set at a predetermined position shown in FIG. Thereafter, the tightening bolts 62, 63 are loosened and removed from the screw holes 51d, 51e, and the jig 60 is removed from the lower chuck arm 51. Thus, by restoring the elastic deformation of the tip portion of the chuck arm 51, the chuck arm 51 and the claw body 52 are integrally coupled by the elastic restoring force, and the replacement operation is completed.

  As described above, since only the claw body 52 can be directly removed and replaced from the tip of the lower chuck arm 51, the cost at the time of replacement can be reduced, and for example, the entire chuck arm or the lower chuck as in the prior art. Since the arm is not purposely removed from the chuck main body, it is not necessary to adjust the claw part centering and the opening / closing timing each time after replacement, and the replacement work can be performed quickly and easily. Further, even when the length of the claw body 52 is longer than the thickness of the lower chuck arm 51 depending on the size of the material S, the lower chuck arm 51 and the claw body 52 are individually manufactured. Therefore, the lower chuck arm 51 and the claw body 52 can be formed easily and easily, and can be mass-produced. In addition, regardless of the material of the lower chuck arm 51, it is possible to freely select and use the claw body 52 that matches the material of the material S to be used, so that the material S made of, for example, a soft material can be used. By selectively using the nail body 52 made of the corresponding material, it is possible to prevent the material S from being damaged.

  In the above embodiment, the claw body 52 is slid and set in a state where the tip of the lower chuck arm 51 is forcibly elastically deformed in the direction to open the fitting holding groove 51a with the dividing groove 51c as a boundary. Then, although the lower chuck arm 51 and the claw body 52 are integrated by the elastic restoring force in the closing direction of the fitting holding groove 51a, the tip of the lower chuck arm 51 is divided into the groove 51c. The claw body 52 is slid and set in a state in which the fitting holding groove 51a is forcibly elastically deformed in the closing direction as a boundary, and the lower chuck arm 51 is connected to the lower chuck arm 51 by the elastic restoring force in the opening direction of the fitting holding groove 51a. The nail body 52 may be integrated.

  In this case, as shown in FIGS. 24 and 25, in the lower chuck arm 51 having the same basic configuration as that of the previous embodiment, the lower outer surface is set to, for example, 5 with respect to the upper outer surface with the tip end portion as the dividing groove 51c. The screw holes 51d and 51e may be formed so as to be inclined outward and the upper and lower outer surfaces are screwed into the fastening screws 62 and 63 of the jig 60 described above.

  In such a configuration, when the claw body 52 is attached to or detached from the distal end portion of the lower chuck arm 51, the jig is attached to the outer surface of the distal end portion of the lower chuck arm 51 as in the previous embodiment. The 60 tightening bodies 61 are addressed, and the tightening bolts 62 and 63 are screwed into the screw holes 51d and 51e through the insertion holes 61a and 61b. As a result, the tip of the chuck arm 51 is forcibly elastically deformed in the direction of closing the fitting holding groove 51a with the dividing groove 51c as a boundary, and the same state as that shown in FIG. With the groove 51c as a boundary, the lower outer surface is held in a straight line. Then, the claw body 52 to be replaced is removed from the fitting holding groove 51a while maintaining the holding state, and a new claw body 52 is slid and set at a predetermined position. , 63 are loosened and the jig 60 is removed from the lower chuck arm 51, whereby the tip of the lower chuck arm 51 is elastically deformed to open the split groove 51c, and the lower chuck arm 51 is elastically restored by this elastic restoring force. And the claw body 52 are integrally coupled. Therefore, even in such a configuration, the same effect as in the previous embodiment can be obtained.

  Further, the shape of the clamping surface 52c in the nail body 52 is not limited to a semicircular shape, and a shape matching the cross-sectional shape of the material S may be selected. For example, as shown in FIG. 27, a semi-hexagonal shape as shown in FIG. 27, or a semi-polygonal shape or an irregular shape although not shown. Further, the length of the claw body 52 is not particularly limited, and may be, for example, the same dimension as the thickness x dimension of the lower chuck arm 51 or less.

  Further, the shape of the fitting holding groove 51a at the tip of the lower chuck arm 51 and the shape of the outer peripheral contour 52a of the claw body 52 corresponding thereto are also rotated and removed in the semicircular shape of the above-described embodiment. It is not limited to the one provided with the engaging projections 51b, 51b for stopping and the engaging recesses 52b, 52b. For example, a semi-oval shape as shown in FIG. 28 or a half-hexagon as shown in FIG. The shape may be a deformed semi-hexagonal shape having engagement portions and engagement grooves as shown in FIG. 30, or other semi-polygonal shapes (not shown). In that case, when the claw body 52 is attached to the fitting holding groove 51 a of the lower chuck arm 51, the fitting holding groove so as not to come out of the fitting holding groove 51 a in a non-rotatable fitting shape. The opening both ends of 51a are formed narrower than the upper and lower ends of the claw body 52, or one of the fitting holding groove 51a and the claw body 52 is engaged with a rotation and retaining engagement protrusion. A recess may be provided.

  Furthermore, in the above-described embodiments, the chuck arms each having a chuck arm divided into two parts have been described. However, it is needless to say that the present invention can also be applied to one consisting of one chuck arm. Further, as indicated by phantom lines in FIG. 22, a concave groove 51g may be formed at a position corresponding to the split groove 51c of the fitting holding groove 51a in the lower chuck arm 51. With this configuration, when the tip end portion of the lower chuck arm 51 is elastically deformed, it can be elastically deformed at a more accurate position and more easily in combination with the split groove 51c.

  It is a perspective view of the coupling member concerning the present invention.   It is a disassembled perspective view of the same coupling member.   It is explanatory drawing of the coupling | bonding operation | movement of the said coupling member.   It is a top view of the coupling member using the wedge body.   It is a perspective view of another coupling member.   It is a disassembled perspective view of the same coupling member.   It is explanatory drawing of the coupling | bonding operation | movement of the said coupling member.   It is coupling | bonding explanatory drawing of the coupling member at the time of using another jig | tool.   It is a front view of a bite.   It is an exploded front view of the byte.   It is explanatory drawing of the joint operation | movement of the byte.   It is a front view of a spanner.   It is an exploded front view of the spanner.   It is explanatory drawing of the coupling | bonding operation | movement of the spanner.   It is a schematic front view of the chuck | zipper apparatus for material conveyance provided with the chuck nail | claw which concerns on this invention.   It is a partially cutaway front view of the principal part of the chuck nail.   It is a side view of the principal part of the chuck nail.   It is a perspective view of the principal part of the chuck nail.   It is a disassembled perspective view of the principal part of the chuck nail.   It is a partially notched front view which shows the decomposition | disassembly state of the chuck nail | claw and a jig | tool.   It is explanatory drawing which shows the attachment state of the jig | tool to the chuck | zipper arm.   It is principal part sectional drawing at the time of slide insertion of the nail | claw body to the chuck | zipper arm.   It is explanatory drawing of the nail | claw body and chuck | zipper arm of the state which loosened the jig | tool.   It is a partially notched front view which shows another embodiment of a chuck nail | claw.   It is a perspective view of the principal part of the chuck nail.   It is a partially notched front view which shows another embodiment of the clamping surface of a nail | claw body.   It is a partially notched front view which shows another embodiment of the clamping surface of a nail | claw body.   It is a front view which shows another embodiment of a fitting holding groove and an outer periphery outline part.   It is a front view which shows another embodiment of a fitting holding groove and an outer periphery outline part.   It is a front view which shows another embodiment of a fitting holding groove and an outer periphery outline part.

A coupling member 1 one member 1a fitting holding portion 1b split groove 2 other member 2a outer peripheral contour portion 6 wedge body B connecting member 11 boss 11a fitting holding hole 11b split groove 12 shaft 12a outer peripheral contour portion 16 jig 17 jig body 17a engagement hook 18 tightening bolt 19 tightening body C tool 21 tool main body 21a fitting holding hole 22 tip 22a outer periphery contour D tool 31 tool main body 31a fitting holding groove 32 base 32a outer periphery contour E chuck claw 51 lower side Chuck arm (chuck arm)
51a Fitting holding groove 52 Claw body 52a Outer peripheral contour portion 52c Holding surface 60 Base

Claims (6)

  It is a connecting member formed by repeatedly connecting two members, and one member has a fitting holding portion for holding the other member, and the fitting holding portion portion is applied by external pressure. While the fitting holding part is configured to be elastically deformable in the opening direction or the closing direction, the other member cannot be inserted into the fitting holding part at all times, and the fitting holding part is opened by elastic deformation or The fitting holding part has a fitting-shaped outer peripheral contour part that can be inserted into and removed from the fitting holding part only in the closed state, and one member is elastically deformed by applying pressure to the fitting holding part opened or closed. The other member is slid and inserted into the fitting holding portion under the state where the fitting is held, and the other member is joined to the fitting holding portion by the elastic restoring force of the one member by releasing the applied pressure. Element.   It is a coupling member formed by repeatedly coupling two members, and one member has an elliptical fitting holding hole for holding the other member, and the fitting holding hole portion is provided from the outside. While the fitting holding hole is formed to be elastically deformable so as to be circular due to the applied pressure, the other member cannot normally be inserted into the fitting holding hole, and the fitting holding hole becomes circular due to elastic deformation. It has a mating-shaped circular contour that can be slid into and out of the fitting and holding hole only when it is in the shape, and one member is elastic so that the fitting and holding hole becomes circular when pressed The other member is slid into the fitting holding hole under the deformed state, and the other member is coupled to the fitting holding hole by the elastic restoring force of the one member by releasing the applied pressure. A connecting member to be used.   On the other hand, the member has a split groove for facilitating elastic deformation, and is provided with a wedge body that can be inserted into and removed from the split groove and urges in a direction to close the fitting holding portion by opening the split groove portion by insertion. The coupling member according to claim 1 or 2.   On the other hand, the member has a plate-like base part with both ends projecting outward, while a U-shaped jig body having an engagement hook part engaged with both ends of the plate-like base part, and a center part of the jig body. It consists of a tightening bolt screwed so as to be able to advance and retreat, and a tightening plate that is rotatably supported at the tip of the tightening bolt. Engage the engaging hooks of the jig body at both ends of the plate-like base. 3. The coupling member according to claim 1, further comprising a jig that elastically deforms one of the members by tightening the tightening bolt in a state where the bolt is tightened.   A tool formed by repeatedly connecting a tip member to a tip portion of a tool body, the tool body having a fitting holding portion with one end opened to hold the tip member at the tip portion, and the fitting holding portion The part is configured to be elastically deformable in the direction to open or close the fitting holding part by external pressure, while the tip member cannot be inserted into the fitting holding part at all times. The tool main body has a fitting-shaped outer peripheral contour portion that can be slidably inserted into and removed from the fitting holding portion only when it is opened or closed by elastic deformation and cannot be rotated and pulled out from the open end. The tip of the tool body is slid into the fitting holder under the condition that the fitting holder is elastically deformed in the open or closed state by applying pressure, and the elasticity of the tool body tip is released by releasing the pressure. It is ahead of the fitting holding part by restoring force Tool characterized by being adapted for coupling the members.   A chuck claw formed by repetitively coupling a claw body to a front end portion of a chuck arm, and the chuck arm has a fitting holding groove with one end opened for holding a claw body extending in the width direction on the inner surface of the front end portion. And the fitting holding groove part is configured to be elastically deformable in the direction to open or close the fitting holding groove by external pressure, while the claw body has a half-divided cylindrical shape, It is impossible to insert into the fitting holding groove at all times, and it is possible to slide into and out of the fitting holding groove only when the fitting holding groove is opened or closed by elastic deformation, and it cannot be rotated and pulled out from the open end. The outer peripheral contour portion of the fitting shape is formed, the holding surface is formed on the inner surface of the nail body according to the shape of the material, and the fitting holding groove is formed by applying pressure to the tip of the chuck arm. Open or close The sliding outer surface portion of the claw body is slid into the fitting holding groove under the state of being elastically deformed in the direction, and the claw body is coupled to the fitting holding groove by the elastic restoring force of the chuck arm tip. Chuck claw characterized by that.

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