JP5265956B2 - Grip jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gripping jig that can easily set a bar-like gripped member having a different diameter. <P>SOLUTION: The gripping jig 1 including a box-like case 3 therein comprises; two griping members 4 gripping a bar-like gripped member by inserting and holding the gripped member in the recess; two operation axes 5 slidable in the direction to keep the two gripping members 4 apart, the operation axes connecting to the gripping members 4; and an elastic member 6 moving the two gripping members 4 in the direction to bring the two gripping members close. When the distance between the gripping faces 4s, 4s of the gripping members 4 is narrowed by being biased by the elastic member 6, the gripping members slide in the direction to be kept apart by operation of the operation axes 5, and after the gripped member is inserted between the gripping members 4, 4, the gripping members can grip the gripped member by stopping the operation of axes 5 and by being biased by the elastic member 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a gripping jig that grips, for example, a rod-shaped tool such as a blade as a gripped member.

  A processing machine such as a machining center is provided with a movable spindle, and a tool such as a blade for processing a workpiece (workpiece) is attached to the tip of the processing machine, and the workpiece is processed into a predetermined shape by the tool. Yes. In recent years, high-speed machining and high-precision machining have been required, and conventional screw-type three-piece holders have problems of runout accuracy and allowable rotation speed. Therefore, the shrink-fitting holder is mounted on the main shaft and used (for example, see Patent Documents 1 to 3).

  Shrink fit holders are of high quality, stable runout accuracy, good closeness to the workpiece, little variation in quality by tool manufacturing operators, and suitable for removal of chips during processing, etc. For reasons, it is advantageous over conventional holders.

JP-A-9-131620 JP 2002-36051 A JP-A-2005-118888

  However, heat is required for removing and attaching the tool by shrink fitting or baking, and time is also required. For this reason, tools such as machining centers are separate from the shrink-fitting device, and tools are shrink-fitted and burned, but it takes time for shrink-fitting and quenching. It does not change.

  In addition, there are various tools that can be attached to and detached from the shrink-fit holder, and there is a need for improvement measures to efficiently perform the shrink-fit process and reduce the time of the shrink-fit process. There is a need for a jig that does not need to be used depending on the type, that is, a jig that can set a plurality of blades having different diameters.

  The subject of this invention is providing the holding jig which can set the rod-shaped to-be-held member from which a diameter differs easily.

  The present inventors urged at least one of the two gripping members arranged so as to be close to and away from each other in the radial direction, the two operation shafts slidable in the direction of separating the gripping members, and the gripping member and the operation shaft By doing so, it has been found that the above problem can be solved by providing an elastic member that moves the two gripping members closer to each other so that the gripping member is gripped by the two gripping members. That is, according to the present invention, the following gripping jig is provided.

[1] A gripping surface is formed as a recess in a box-shaped case, and the gripping surfaces can be opposed to each other in the radial direction so as to sandwich and hold a rod-shaped member to be gripped by the recess. At least one of the two gripping members and the operation shafts, the two gripping members that are connected to the gripping members, and that are slidable in the direction of separating the two gripping members. , And an elastic member that moves the two gripping members in the approaching direction so as to grip the gripped member by the two gripping members, and is biased by the elastic member. The gripping member whose gripping surface interval is narrowed is slid in a direction in which the gripping member is separated by sliding the operation shaft in a direction opposite to the urging direction by the elastic member. After holding the holding member into an insertable state and inserting the gripped member between the gripping members, the operation by the operation shaft is stopped, whereby the gripped member is urged by the gripping member by biasing by the elastic member. A gripping jig to grip.

[2] The gripping member is formed with a shaft insertion portion for inserting the operation shaft for connecting the gripping member and the operation shaft to slide the gripping member in conjunction with the operation of the operation shaft. The holding jig according to the above [1].

[3] One end of the operation shaft is inserted into the shaft insertion portion, and the other end is a knob for operation, and there is no difference between one end and the other end. The gripping jig according to [2], wherein the gripping jig is formed in a shape that is bent in between and is slidable by the knob portion in a direction opposite to a direction of urging by the elastic member.

[4] The gripping jig according to the above [3], wherein the operation shaft is slid in a direction in which the interval between the two knobs is made closer, and the member to be gripped is inserted.

[5] A gripping surface is formed as a recess at a depth different from the gripping member in the case, and the rod-shaped gripped member gripped by the gripping member is coaxially sandwiched by the recess and gripped. For this purpose, two second gripping members are arranged by urging each of the second gripping members and the two second gripping members disposed so as to be able to approach and separate in the radial direction with the gripping surfaces facing each other. An elastic member that moves the two gripping members closer to each other so as to grip the gripped member by the member, and the operation shaft is also connected to the second gripping member, By operating the shaft, the second gripping member is slid in the direction of separating from each other to make the gripped member insertable, and after inserting the gripped member between the second gripping members, the operation shaft Operation by By stopping, gripping tool according to any one of [1] to [4] for gripping the gripped member in the second gripping member.

[6] The second gripping member is formed with a groove in an oblique direction with respect to the approaching and separating directions, and the operation shaft is formed with an engagement protrusion that engages with the groove, and the operation shaft The gripping jig according to [5], wherein the engaging protrusion slides in the groove to separate the second gripping member.

[7] The gripping jig according to any one of [1] to [6], wherein a housing portion for housing the gripped member is provided in the case.

  According to the gripping jig of the present invention, it is possible to grip a member to be gripped with various diameters with the central axis at a predetermined position. The gripping can be easily performed by operating the operation shaft.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and changes, modifications, and improvements can be added without departing from the scope of the invention.

  FIG. 1 shows a perspective view of a gripping jig 1 of the present invention. 2 is a perspective view of the gripping jig 1 with the lid 2 removed, and FIG. 3 is a plan view of the gripping jig 1 with the lid 2 removed. The gripping jig 1 is connected to two gripping members 4 and the respective gripping members 4 in order to grip and hold a tool 15 such as a rod-shaped blade 15 as a gripped member in a recess in a box-shaped case 3. Two operating shafts 5 that are slidable in a direction in which the two gripping members 4 are separated from each other, and an elastic member 6 that is moved in a direction in which the two gripping members 4 are approached.

  The gripping member 4 whose gripping surfaces 4s and 4s are narrowed by being urged by the elastic member 6 is slid in the direction of separating by operating the operation shaft 5, and the tool 15 as the gripped member is moved. After being inserted between the gripping members 4, 4, by stopping the operation by the operation shaft 5, the gripping member 4 can be gripped by the gripping member 4 by urging by the elastic member 6 as shown in FIG. 1.

  The gripping member 4 is formed with a gripping surface 4s as a recess, and the two gripping members 4 are disposed so as to be able to approach and separate in the radial direction while facing the gripping surface 4s. In order to slide the gripping member 4 in conjunction with the operation of the operation shaft 5, a shaft insertion portion 4a for inserting the operation shaft 5 is formed. As shown in FIG. 5, the shaft insertion portion 4 a is formed as a groove portion, and is formed so that the end portion of the operation shaft 5 is inserted into the groove portion. Further, the gripping surface 4s is formed so that the center is inclined from the center of the recess toward both ends, and a parallelogram is formed by joining the two gripping surfaces 4s. For this reason, it is easy to reliably hold the rod-like member to be held by the holding surface 4s.

  One end of the operation shaft 5 is inserted into the shaft insertion portion 4a, and the other end is a knob 5a for operation, and the operation shaft 5 is bent between one end and the other end. It is formed in a shape and can be moved by the knob 5a in the same direction opposite to the urging direction by the elastic member 6. Specifically, as shown in FIG. 3, the shape is bent in a substantially L shape. For this reason, the operation shaft 5 can be slid in the direction in which the distance between the two knobs 5a is made closer, so that the member to be grasped can be inserted. That is, the operator can easily insert with one hand (see FIG. 5).

  The elastic member 6 is for gripping the gripped member by the two gripping members 4 by urging at least one of the gripping member 4 and the operation shaft 5. In the present embodiment, both the gripping member 4 and the operation shaft 5 are urged by using a spring as the elastic member 6. That is, the spring is provided so as to bias the surface of the gripping member 4 on the side opposite to the gripping surface 4 s and the surface of the operation shaft 5 on the side opposite to the knob portion 5 a. The holding member 4 can be moved closer by the spring, in other words, the holding surfaces 4s and 4s of the two holding members 4 can be moved closer to each other, and the held member can be held by the spring force.

  FIG. 4 shows a plan view with the gripping member 4, the operating shaft 5, and the elastic member 6 removed. The gripping jig 1 has two second gripping members 8 for gripping a rod-shaped gripped member gripped by the gripping member 4 at a different depth from that of the gripping member 4 in the case 3 on the same axis, sandwiched between the recesses. Then, by urging each of the second gripping members 8, the elastic member 9 moves the two second gripping members 8 toward each other so that the two gripping members 8 grip the gripped member. And further comprising.

  In order to explain the relationship between the gripping member 4, the second gripping member 8, and the operation shaft 5, FIG. 5 is a perspective view of the main part, and FIG. The case 3 includes a gripping member 4, an operation shaft 5 and the like at a position (first level) lowered from the upper surface on which the lid portion 2 is placed, and a second gripping member at a position (step 2) further lowered. 8 etc. The operation shaft 5 is also connected to the second gripping member 8, and when the operation shaft 5 is operated, the second gripping member 8 slides in a direction to move away from each other, and the gripped member is moved to the second gripping member 8. , 8, and the second gripping member 8 grips the member to be gripped by stopping the operation by the operating shaft 5.

  The second gripping member 8 is formed with a gripping surface 8s as a recess, and the two second gripping members 8 are disposed so as to be able to approach and separate in the radial direction while facing the gripping surface 8s. The second gripping member 8 is formed with a groove 8m in an oblique direction with respect to the approaching and separating directions, and the operation shaft 5 is formed with an engaging protrusion 5b that engages with the groove 8m. By operating, the engaging protrusion 5b slides in the groove 8m to separate the second gripping member 8.

  As described above, one end of the operation shaft 5 is coupled to the first level gripping member 4, and the engaging protrusion 5 b formed on the lower side is coupled to the second level second gripping member 8. Has been. Before the gripping jig 1 is used, the two gripping members 4 are biased by the first level elastic members 6 and the two second gripping members 8 are biased by the second level elastic members 9 so as to approach each other. When the operator operates the knob 5a of the two operation shafts 5 in the direction of approaching each other, the gripping members 4 and 4 and the second gripping members 8 and 8 are opened so that the gripped member can be inserted. It becomes. At this time, by inserting the member to be gripped and stopping the operation of the operation shaft 5, the elastic members 6 and 9 close again between the gripping members 4 and 4 and between the second gripping members 8 and 8, and the gripped member Can be gripped.

  Since the diameter between the gripping members 4 and 4 and between the second gripping members 8 and 8 can be changed by the operation shaft 8 and the elastic members 6 and 9, it is easy to use and grips gripped members having different diameters. Is possible. Further, since the diameter between the gripping members 4 and 4 and between the second gripping members 8 and 8 can be changed while maintaining the position of the central axis, the position of the central axis of the gripped member in the gripping jig 1 is It is constant and it is easy to automate the next process while being gripped by the gripping jig 1.

  For this reason, the gripping jig 1 of the present invention is configured such that the gripping member 4 and the second gripping member 8 provided in the central portion have a diameter between the gripping members 4, 4 and between the second gripping members 8, 8. 1 and the elastic members 6 and 9, for example, as shown in FIG. 1, the tool 15 such as a knife is sandwiched and used for transfer to a shrink fitting process line for shrink fitting to a shrink fit holder. Can do. Since the center axis of the tool 15 is maintained at a predetermined position, it is easy to automate the shrink fitting process.

  Further, as shown in FIG. 1, an accommodating portion 13 formed as a cylindrical hole is provided in the case 3 to accommodate a member to be grasped, such as a cutter used in a machine tool such as a machining center. After the tool 15 is removed from the shrink-fitting holder on which the tool 15 is shrink-fitted, the tool 15 can be inserted into the accommodating portion 13 and transferred. Since it is not necessary to maintain the central axis at a predetermined position after the tool 15 is used, the accommodating portion 13 of the gripping jig 1 can be used as a tool stand.

  Next, the shrink fitting process using the holding jig 1 will be described. As shown in FIG. 1, a gripping member such as a blade is inserted and gripped in the gripping jig 1, and is arranged in a predetermined order. The gripping jig 1 can grip tools 15 having different diameters with the central axis at a predetermined position, and the conveyance of the tool 15 gripped by the gripping jig 1 is easy to automate. .

  In the shrink fitting process, as shown in FIG. 7, a heating coil portion 41 that expands the diameter by thermal expansion by heating the holder 52 inserted therein, a power supply circuit portion 42 that causes a high-frequency current to flow through the heating coil portion 41, The shrink-fitting device 40 provided with the raising / lowering part 43 which puts / removes the front-end | tip of the holder 52 in and out of a coil by mounting and raising the holder 52 is used. The holder 52 is placed with the elevating part 43 of the shrink-fitting device 40 in the low position. The tool 15 held by the holding jig 1 is held by the transfer device and transferred to the shrink fitting device 40.

  As shown in FIG. 7, the elevating unit 43 is raised, the tip of the holder 52 is inserted into the heating coil unit 41, and the tip of the holder 52 is heated to thermally expand and expand the diameter. Insert the tool into the tool insertion hole and shrink fit.

  The gripping jig of the present invention can be used as a jig for gripping a rod-shaped tool (blade) or the like used in a processing machine such as a machining center. It can also be used to grip other rod-shaped gripped members of various diameters.

It is a perspective view which shows one Embodiment of the holding jig of this invention. It is a perspective view which shows the holding jig of the state which removed the cover part. It is a top view which shows the holding jig of the state which removed the cover part. It is a top view which shows the holding jig of the state which removed the holding member, the operating shaft, etc. It is a principal part perspective view of a holding jig. It is AA sectional drawing in FIG. It is a schematic diagram for demonstrating shrink fitting.

Explanation of symbols

1: gripping jig, 2: lid part, 3: case, 4: gripping member, 4a: shaft insertion part, 4s: gripping surface, 5: operation shaft, 5a: knob part, 5b: engagement protrusion part, 6: Elastic member, 8: second gripping member, 8m: groove portion, 8s: gripping surface, 9: elastic member, 13: accommodating portion, 15: tool.

Claims (7)

In a box-shaped case,
A gripping surface is formed as a recess, and two gripping members disposed so as to be able to approach and separate from each other in the radial direction facing the gripping surfaces to sandwich and hold a rod-shaped gripped member between the recesses,
Two operating shafts coupled to the respective gripping members and slidable in a direction to separate the two gripping members;
An elastic member that moves two gripping members in a direction approaching the gripping member so that the gripping member is gripped by the two gripping members by biasing at least one of the gripping member and the operation shaft; With
The gripping member whose gripping surface interval is narrowed by being biased by the elastic member is slid in a direction to be separated by sliding the operation shaft in the opposite direction to the biasing direction by the elastic member. The gripped member is made insertable, and after the gripped member is inserted between the gripped members, the operation by the operation shaft is stopped, so that the gripping member is biased by the elastic member. A gripping jig for gripping a member to be gripped.   The gripping member is formed with a shaft insertion portion for inserting the operation shaft for connecting the gripping member and the operation shaft to slide the gripping member in conjunction with the operation of the operation shaft. The gripping jig according to claim 1.   The operation shaft has one end inserted into the shaft insertion portion, and the other end is a knob for operation, and is bent between the one end and the other end. The holding jig according to claim 2, wherein the holding jig is slidable by the knob in a direction opposite to a direction of urging by the elastic member.   The gripping jig according to claim 3, wherein the operation shaft is slid in a direction in which the interval between the two knobs is made closer to allow the gripped member to be inserted. A gripping surface is formed as a recess at a different depth from the gripping member in the case, and the rod-shaped gripped member gripped by the gripping member is coaxially held between the recesses to hold each other. Two second gripping members disposed so as to be able to approach and separate in the radial direction while facing the gripping surfaces of
An elastic member that moves the two gripping members in a direction approaching the two gripping members so as to grip the gripped member by the two second gripping members by biasing each of the second gripping members. ,
The operation shaft is also connected to the second gripping member, and by operating the operation shaft, the second gripping member is slid in a direction to be separated from each other, and the gripped member can be inserted. 5. The gripping member is gripped by the second gripping member by stopping the operation by the operation shaft after the gripped member is inserted between the second gripping members. The holding jig according to the item. The second gripping member has a groove formed in an oblique direction with respect to the approaching and separating directions,
The operation shaft is formed with an engaging protrusion that engages with the groove,
The gripping jig according to claim 5, wherein by operating the operation shaft, the engaging protrusion slides in the groove to separate the second gripping member.   The gripping jig according to claim 1, wherein a housing portion for housing the gripped member is provided in the case.

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