JP2015174158A - Tool holder - Google Patents

Abstract

Provided is a tool holder that can stably hold a tool and does not require a large force when the tool is attached to or detached from a tool magazine. A tool holder according to the present invention holds one side surface portion of a columnar tool and the other side surface portion located on the opposite side of the one side surface portion, along the one side surface portion and the other side surface portion. Two holding portions having a semi-cylindrical shape, a connecting portion for rotatably connecting side edges of the two holding portions, and a handle portion protruding from each of the two holding portions. And [Selection] Figure 1

Description

  The present invention relates to a tool holder that is used when a tool is attached to or detached from a tool magazine of a machine tool and holds the tool.

  A machine tool holds a work on a table and performs various processes such as milling and tapping with a tool mounted on a spindle. The machine tool is provided with a tool magazine for storing a plurality of tools, and a predetermined tool is selected from the tool magazine and mounted on the spindle (for example, Patent Document 1).

  The operator removes an unnecessary tool from the tool magazine and installs a desired tool before operating the machine tool. Installation and installation of tools to the tool magazine is done by hand.

JP 2012-210681 A

  However, it is difficult to grab a small tool by hand, and an operator may drop the tool. When the tool is damaged by dropping, the machining accuracy of the workpiece by the tool may be lowered.

  This invention is made | formed in view of such a situation, and it aims at providing the tool holder which can hold | maintain a tool stably and can attach or detach a tool to a tool magazine easily.

  The tool holder according to the present invention holds a side surface portion of a columnar tool and the other side surface portion located on the opposite side of the one side surface portion, and has a semi-tubular shape along the one side surface portion and the other side surface portion Two holding portions, a connecting portion that rotatably connects side edges of the two holding portions, and a handle portion that protrudes from each of the two holding portions.

  In the present invention, the operator grasps the handle portion provided in each of the two holding portions with both hands. The operator releases the two holding parts. The two holding portions rotate around the connecting portion and are separated from each other. The tool holder opens. The operator places a tool between the two holding portions and brings the two holding portions close to each other. The two holding portions rotate around the connecting portion and approach each other. The tool holder closes and holds the tool. The operator brings the tool holder close to the tool magazine, and attaches the tool to the tool magazine while being held by the tool holder, or removes the tool from the tool magazine while being held by the tool holder.

  The tool holder according to the present invention is characterized in that an abutting portion to be abutted against the tool is provided on the side edge portion of the holding portion so as to be separated from the connecting portion.

  In the present invention, when a tool is mounted on the tool magazine, the abutting portion abuts on the tool to prevent the tool from moving in the direction opposite to the mounting direction.

  The tool holder according to the present invention is characterized in that a protective member for protecting one side surface portion and the other side surface portion of the tool is detachably provided inside each of the two holding portions.

  In the present invention, a protective member is provided inside the holding portion. The protective member is proximate to the peripheral surface of the tool and protects the tool from damage.

  The tool holder according to the present invention is characterized in that a key that engages with a key groove formed in the tool is provided on the side edge of the holding portion.

  In the present invention, the key provided in the holding portion engages with the key groove of the tool to position the tool. The key is in a posture that allows the tool to be mounted in the tool magazine. The operator only needs to engage the key with the key groove, and the efficiency of the work of attaching the tool to the tool magazine is improved.

  The tool holder according to the present invention is characterized in that a latching portion for latching the tool is provided at an end of each of the two holding portions opposite to the handle portion.

  In this invention, a latching part latches a tool. Since the tool cannot be removed from the tool holder, the tool holder securely holds the tool.

  In the present invention, the operator grasps the handle portion provided in each of the two holding portions with both hands. The operator releases the two holding parts. The two holding portions rotate around the connecting portion and are separated from each other. The tool holder opens. The operator places a tool between the two holding portions and brings the two holding portions close to each other. The two holding portions rotate around the connecting portion and approach each other. The tool holder closes and holds the tool. The operator brings the tool holder close to the tool magazine, and attaches the tool to the tool magazine while being held by the tool holder, or removes the tool from the tool magazine while being held by the tool holder. Since the holding part has a semi-cylindrical shape and the handle part protrudes from the holding part, the holding part is separated from the tool. The operator can attach / detach the tool to / from the tool magazine at a position away from the tool, so that the tool is not dropped.

FIG. 3 is a perspective view schematically showing the tool holder in an open state according to the first embodiment. It is a perspective view which briefly shows the tool holder in the closed state. FIG. 3 is a perspective view schematically showing a tool holder holding a tool in an opened state. FIG. 3 is a perspective view schematically showing a tool holder holding a tool in a closed state. FIG. 5 is a schematic cross-sectional view taken along line VV shown in FIG. 4. It is explanatory drawing explaining the attachment or detachment of the tool using a tool holder. It is an enlarged plan view which outlines an example of the protrusion board which changed a part of structure. It is an enlarged plan view which briefly shows the other example of the protrusion board which changed a part of structure. FIG. 9 is a perspective view schematically showing a tool holder in an open state according to a second embodiment. It is a perspective view which briefly shows the tool holder in the closed state. FIG. 3 is a perspective view schematically showing a tool holder holding a tool in an opened state. FIG. 3 is a perspective view schematically showing a tool holder holding a tool in a closed state.

(Embodiment 1)
Hereinafter, the present invention will be described based on the drawings showing a tool holder according to Embodiment 1. FIG. FIG. 1 is a perspective view schematically showing the tool holder in an open state, and FIG. 2 is a perspective view schematically showing the tool holder in a closed state. In the following description, up and down, left and right, and front and rear indicated by arrows in the figure are used. The front corresponds to the front and the back corresponds to the rear.

  The tool holder 1 includes a first holding part 10 and a second holding part 20 that are located on the right side and the left side, respectively. Each of the first holding unit 10 and the second holding unit 20 has a semicylindrical shape that is long in the vertical direction. The first holding unit 10 includes a central trunk body 11, a holding frame 15, and a handle connecting plate 14.

  The central trunk 11 has an L-shaped bar shape that extends vertically. The central trunk 11 has a rectangular first plate portion 12 and a second plate portion 13 that are long in the vertical direction. The right edge portion of the first plate portion 12 and the left edge portion of the second plate portion 13 are connected at a right angle.

  A concave portion 12 a is provided in the central portion in the vertical direction of the left edge portion of the first plate portion 12. An extension piece 12b parallel to the first plate portion 12 is provided above the recess 12a. The extending piece 12 b extends from the left edge portion of the first plate portion 12. The extension piece 12b is provided with a key 12c that fits in a key groove 53b (see FIG. 3) described later. The key 12c has a horizontally long plate shape parallel to the extending piece 12b.

  A handle connecting plate 14 parallel to the second plate portion 13 is provided at the lower end portion of the second plate portion 13. The handle connecting plate 14 extends from the right edge portion of the second plate portion 13. An L-shaped handle 18 is connected to the outer surface of the handle connecting plate 14 (the surface on the opposite side of the first plate portion 12). The other end of the handle 18 is connected to the handle connecting plate 14 so that one end is located on the lower side. The handle 18 protrudes in a direction parallel to the handle connecting plate 14 and extends downward from the protruding end.

  A holding frame 15 is provided at the upper end of the central trunk 11. The holding frame 15 has a semi-cylindrical shape that is U-shaped when viewed from above. A protection member 16 that protects the tool 50 (see FIG. 3) is detachably attached to the inside of the holding frame 15 by a screw 35. The protection member 16 has a semicylindrical shape that is long in the vertical direction. The inner peripheral surface of the protection member 16 has a semi-conical trapezoidal shape and corresponds to the shape of a truncated cone portion 52 (see FIG. 3) of the tool 50 described later. The protection member 16 is made of a resin member.

  A protruding plate 17 (hanging portion) protrudes upward from the central portion of the upper edge portion of the holding frame 15. The protruding plate 17 has a reverse L shape in side view. The protruding plate 17 includes a side plate portion 17a protruding upward from the holding frame 15 and an upper plate portion 17b protruding from the upper end portion of the side plate portion 17a toward the inside (second holding portion 20 side). A V-shaped latching recess 17c is provided on the protruding edge of the upper plate portion 17b.

  The second holding unit 20 includes a central trunk body 21, a holding frame 25, and a handle connecting plate 24. The central trunk 21 has an L-shaped bar shape that extends vertically. The central trunk 21 has a rectangular first plate portion 22 and a second plate portion 23 that are long in the vertical direction. The left edge portion of the first plate portion 22 and the right edge portion of the second plate portion 23 are connected at a right angle.

  A concave portion 22 b is provided in the central portion in the vertical direction of the right edge portion of the first plate portion 22. The recess 22b is located above the recess 12a of the first holding unit 10 and is in a position corresponding to the extended piece 12b and the key 12c of the first holding unit 10. The recess 22b accommodates the extended piece 12b and the key 12c of the first holding part 10. An extending piece 22a (contact portion) parallel to the first plate portion 22 is provided below the recess 22b. The extension piece 22 a extends from the right edge portion of the first plate portion 22. The recess 12a of the first holding unit 10 accommodates the extending piece 22a.

  A handle connecting plate 24 parallel to the second plate portion 23 is provided at the lower end portion of the second plate portion 23. The handle connecting plate 24 extends from the left edge portion of the second plate portion 23. An L-shaped handle 28 is connected to the outer surface of the handle connecting plate 24 (the surface on the opposite side of the first plate portion 22). The other end of the handle 28 is connected to the handle connecting plate 24 so that one end is located on the lower side. The handle 28 protrudes in a direction parallel to the handle connecting plate 24 and extends downward from its protruding end.

  A holding frame 25 is provided at the upper end of the central trunk 21. The holding frame 25 has a semi-cylindrical shape that is U-shaped when viewed from above. A protection member 26 that protects the tool 50 is detachably attached to the inside of the holding frame 25 by a screw 35. The protection member 26 has a semi-cylindrical shape that is long in the vertical direction. The inner peripheral surface of the protection member 26 has a semi-conical trapezoidal shape, and corresponds to the shape of the truncated cone portion 52 of the tool 50 described later. The protection member 26 is made of a resin member.

  A protruding plate 27 protrudes upward from the central portion of the upper edge of the holding frame 25. The protruding plate 27 is L-shaped when viewed from the side. The protruding plate 27 includes a side plate portion 27a that protrudes upward from the holding frame 25, and an upper plate portion 27b that protrudes from the upper end portion of the side plate portion 27a toward the inside (the first holding portion 10 side). A V-shaped latching recess 27c is provided at the protruding end edge of the upper plate portion 27b.

  The 1st board parts 12 and 22 of each of the 1st holding part 10 and the 2nd holding part 20 are facing left and right. The left edge portion of the first plate portion 12 and the right edge portion of the first plate portion 22 are rotatably connected by hinges 30 (connection portions) at the upper end portion and the lower end portion, respectively. When the operator grasps the handle and moves it to the left and right, the first holding unit 10 and the second holding unit 20 rotate to the left and right. The tool holder 1 is opened and closed by the left and right movement of the operator.

  In addition, you may provide the other connection part which can replace with the hinge 30 and can be rotated. For example, hooks may be provided on the first plate portions 12 and 22, and the hooks may be pivotably connected. Alternatively, a hook may be provided on one first plate portion, a shaft member may be provided on the other first plate portion, and the shaft member may be rotatably connected to the hook.

  3 is a perspective view schematically showing the tool holder 1 holding the tool 50 in an opened state, FIG. 4 is a perspective view schematically showing the tool holder 1 holding the tool 50 in a closed state, and FIG. 5 is a schematic cross-sectional view taken along line VV shown in FIG. The tool 50 is a small small diameter tool.

  The tool 50 includes a tool body 55 and a tool holder 51. The tool holder 51 supports the tool body 55. The tool holder 51 includes a truncated cone part 52, a cylindrical part 53, and a pull stud 54. The truncated cone portion 52 is formed so that the upper side is reduced in diameter. The cylindrical portion 53 is provided coaxially at the lower end portion of the truncated cone portion 52. A groove 53 a along the circumferential direction is provided at the center in the vertical direction of the circumferential surface of the cylindrical portion 53. A key groove 53b is provided in each of the one side surface portion and the other side surface portion of the cylindrical portion 53.

  The other side surface portion is located on the opposite side of the one side surface portion by approximately 180 degrees. The pull stud 54 has a cylindrical shape and protrudes upward from the upper surface of the truncated cone part 52. The upper end portion of the pull stud 54 has a larger diameter than the lower portion. A hole (not shown) is provided on the lower surface of the cylindrical portion 53. The tool body 55 has a cylindrical shape, and the diameter thereof is smaller than that of the cylindrical portion 53. The tool body 55 is fitted into the hole described above.

  As shown in FIG. 3, when holding the tool 50 on the tool holder 1, the operator opens the tool holder 1 and the truncated cone portion 52 so that the two key grooves 53 b are positioned on the front side and the rear side, respectively. Is arranged between the two protective members 16, 26. As shown in FIG. 4, the operator closes the tool holder 1 and holds the circumferential surface of the truncated cone portion 52 by the two protection members 16 and 26.

  As shown in FIG. 5, when closing the tool holder 1, the operator adjusts the circumferential position of the tool 50 so that the key 12c is positioned inside the rear keyway 53b. When the key 12 c is engaged with the rear key groove 53 b, the position of the tool 50 with respect to the tool holder 1 is determined. The front keyway 53 b is exposed below the holding frames 15 and 25. When the positions of the key groove 53b and the key 12c are not aligned, the tool 50 rides on the key 12c and assumes an oblique posture. Therefore, the operator easily recognizes that the positions of the key groove 53b and the key 12c are not aligned.

  The lower portion of the pull stud 54 is located between the two latching recesses 17c and 27c. The upper end of the pull stud 54 is located above the latching recesses 17c and 27c. The upper end part (large diameter part) of the pull stud 54 is hooked on the edge part of the latching recessed parts 17c and 27c. Since the holding frames 15 and 25, the protection members 16 and 26, and the latching recesses 17 c and 27 c hold the tool 50, the tool 50 does not fall from the tool holder 1.

  FIG. 6 is an explanatory diagram for explaining the attachment / detachment of the tool 50 using the tool holder 1. The machine tool includes a spindle 60, a tool magazine 61, and the like. The tool magazine 61 includes a disk 62 and a cover 63. The disk 62 is disposed on the front side, and its central part is connected to a rotating shaft (not shown). The cover 63 protrudes rearward from the entire outer peripheral edge of the disk 62. A plurality of recesses 64 are juxtaposed in the circumferential direction at the rear edge of the cover 63. An arm (not shown) for holding the tool 50 is provided inside the recess 64.

  As shown by the solid line arrow in FIG. 6, when attaching the tool 50 to the arm, the operator grasps the handles 18 and 28 in the closed state and brings the tool holder 1 holding the tool 50 close to the recess 64. When the tool holder 1 is closed, the distance between the handles 18 and 28 is short, so that the operator can hold the handles 18 and 28 with one hand. The operator fits the groove 53a of the cylindrical portion 53 into the claw of the arm and pushes it in the direction of the solid line arrow in FIG. The extension piece 22a of the second holding part 20 abuts on the cylindrical part 53 of the tool 50, and prevents the tool 50 from moving in the direction opposite to the pushing direction.

  The cylindrical portion 53 enters the concave portion 64. The arm is fitted in the groove 53 a of the cylindrical portion 53 and holds the tool 50. The operator opens the tool holder 1 and pulls it later. The tool 50 leaves the tool holder 1. The tool magazine 61 holds the tool 50.

  The two key grooves 53b of the tool 50 are positioned on the front side and the rear side while being held by the arm. Keys 12c that fit into the key grooves 53b are provided on the front and rear sides of the lower end of the main shaft 60, respectively. Since the key groove 53b is in a position corresponding to a key (not shown) provided before and after the lower end of the main shaft 60, when the tool 50 is mounted on the main shaft 60, the key of the main shaft 60 is fitted into the key groove 53b. The tool 50 is smoothly mounted on the main shaft 60 in a predetermined posture.

  6, when the tool 50 is removed from the arm, the operator holds the handles 18 and 28 to open the tool holder 1, and the truncated cone portion 52 of the tool 50 has two protective members 16 and 26. It approaches the recessed part 64 so that it may be located between. The operator closes the tool holder 1 and holds the truncated cone portion 52 with the two protection members 16 and 26. The operator adjusts the circumferential position of the tool 50 so that the key 12c is fitted in the key groove 53b.

  The operator moves the tool holder 1 backward (in the direction of the broken line arrow in FIG. 6). The front portions of the two protection members 16 and 26 press the truncated cone portion 52 rearward and push the tool 50 rearward. The tool 50 leaves the arm and recess 64. The tool holder 1 holds the tool 50 and leaves the tool magazine 61. The tool holder 1 removes the tool 50 from the tool magazine 61.

  The first holding part 10 and the second holding part 20 have a semi-cylindrical shape, and the handles 18 and 28 protrude from the first holding part 10 and the second holding part 20, so that they are separated from the tool 50. The operator attaches / detaches the tool 50 to / from the tool magazine 61 at a position away from the tool 50.

  Depending on the work, it may be easier to work with one hand than with both hands. When the hands 18 and 28 are grasped with one hand, the force applied to the handles 18 and 28 is smaller than when working with both hands, but the force is amplified so that the tool 50 can be attached and detached reliably.

  Since the tool 50 is made of metal and the protection members 16 and 26 are made of a resin member, the protection members 16 and 26 are softer than the tool 50. The protection members 16 and 26 are close to the peripheral surface of the tool 50 and protect the tool 50 from damage. In addition, only the part which contacts the surrounding surface of the tool 50 of the protection members 16 and 26 may be comprised with a resin member, and another part may be comprised with a metal. Further, an elastic member such as rubber may be used for the protection members 16 and 26 instead of the resin member. When the elastic member is used, the protection members 16 and 26 can absorb the dimensional error of the tool 50 and the holding frames 15 and 25 by elastic deformation.

  The protection members 16 and 26 are designed according to the specifications of the tool 50. Therefore, when using a tool 50 having a different specification, the operator replaces the protection member 16 or 26 according to the specification of the tool 50. The operator removes the screw 35 and removes the protection members 16 and 26 from the holding frames 15 and 25, and attaches the protection members 16 and 26 according to the specifications of the tool 50 to the holding frames 15 and 25 with the screws 35.

  The key 12c engages with the key groove 53b of the tool 50, and positions the tool 50 in the circumferential direction (left-right direction or front-rear direction). The key 12c puts the tool 50 in a posture where it can be mounted on the tool magazine 61. The operator can efficiently attach the tool 50 to the tool magazine 61 simply by engaging the key 12c with the key groove 53b.

  The latching recesses 17 c and 27 c and the upper plate latch the tool 50. Since the tool 50 cannot be removed from the tool holder 1, the tool holder 1 holds the tool 50 securely.

  FIG. 7 is an enlarged plan view schematically showing an example of the projecting plates 17 and 27 with a part of the configuration changed, and FIG. 8 is an enlarged plan view schematically showing another example of the projecting plates 17 and 27 with a part of the configuration changed. It is. The shape of the latching recesses 17c and 27c is not limited to the V shape. For example, as shown in FIG. 7, the shape of the latching recesses 17c and 27c may be semicircular or rectangular. Further, as shown in FIG. 8, the pull stud 54 may be latched at the line-shaped protruding end edges of the upper plate portions 17b and 27b without forming the latching recesses 17c and 27c.

(Embodiment 2)
Hereinafter, the present invention will be described with reference to the drawings showing a tool holder 1 according to a second embodiment. 9 is a perspective view schematically showing the tool holder 1 in an open state, and FIG. 10 is a perspective view schematically showing the tool holder 1 in a closed state.

  The first holding unit 10 includes a holding frame 15. The holding frame 15 has a semi-cylindrical shape that is U-shaped when viewed from above. A protection member 16 that protects the tool 50 is detachably attached to the inside of the holding frame 15 by a screw 35. The protection member 16 has a semicylindrical shape that is long in the vertical direction. The inner peripheral surface of the protection member 16 has a semi-conical trapezoidal shape and corresponds to the shape of the truncated cone portion 52 of the tool 50. A protruding plate 17 protrudes upward from the central portion of the upper edge of the holding frame 15.

  A handle 18 is connected to the right side surface portion of the holding frame 15 in FIG. The spacer 19 protrudes rightward from the right side surface portion of the holding frame 15 and extends downward. A handle 18 is connected to the lower end of the spacer 19. The handle 18 is curved so as to protrude rightward from the lower end of the spacer 19 and extends forward, and extends downward from the tip of the portion extending forward.

  The second holding unit 20 includes a holding frame 25. The holding frame 25 has a semi-cylindrical shape that is U-shaped when viewed from above. An extending piece 25 a (abutting portion) extends downward from the rear surface portion of the holding frame 25. The extending piece 25a is positioned below the holding frame 15 and does not interfere with the holding frame 15 when the second holding unit 20 rotates. When the tool 50 held by the tool holder 1 is attached to the tool magazine 61, the extending piece 25a contacts the tool 50 and pushes the tool 50 forward.

  A protection member 26 that protects the tool 50 is detachably attached to the inside of the holding frame 25 by a screw 35. The protection member 26 has a semi-cylindrical shape that is long in the vertical direction. The inner peripheral surface of the protection member 26 has a semi-conical trapezoidal shape and corresponds to the shape of the truncated cone portion 52 of the tool 50. A protruding plate 27 protrudes upward from the central portion of the upper edge of the holding frame 25.

  A handle 28 is connected to the left side surface portion of the holding frame 25 in FIG. The spacer 29 protrudes leftward from the left side surface portion of the holding frame 25 and extends downward. A handle 28 is connected to the lower end of the spacer 29. The handle 28 is curved so as to protrude leftward from the lower end of the spacer 29 and extends forward, and extends downward from the tip of the portion extending forward.

  The left edge portion of the holding frame 15 of the first holding portion 10 and the right edge portion of the holding frame 25 of the second holding portion 20 face left and right, and are connected by a hinge 30 so as to be rotatable. When the operator grasps the handles 18 and 28 and moves them to the left and right, the first holding unit 10 and the second holding unit 20 rotate to the left and right. The tool holder 1 is opened and closed by the left and right movement of the operator.

  11 is a perspective view schematically showing the tool holder 1 holding the tool 50 in an opened state, and FIG. 12 is a perspective view schematically showing the tool holder 1 holding the tool 50 in a closed state. The tool 50 is a large large-diameter tool.

  The tool 50 includes a tool body 56 and a tool holder 51. The tool holder 51 supports the tool body 56. The tool holder 51 includes a truncated cone part 52, a cylindrical part 53, and a pull stud 54. The truncated cone portion 52 is formed so that the upper side is reduced in diameter. The cylindrical portion 53 is provided coaxially at the lower end portion of the truncated cone portion 52. A groove 53 a along the circumferential direction is provided at the center in the vertical direction of the circumferential surface of the cylindrical portion 53. A key groove 53b is provided in each of the one side surface portion and the other side surface portion of the cylindrical portion 53.

  The other side surface portion is located on the opposite side of the one side surface portion by approximately 180 degrees. The pull stud 54 has a cylindrical shape and protrudes upward from the upper surface of the truncated cone part 52. The upper end portion of the pull stud 54 has a larger diameter than the lower portion. The tool body 56 has a cylindrical shape, and its diameter is larger than that of the cylindrical portion 53. The tool body 56 is connected to the lower end portion of the cylindrical portion 53.

  As shown in FIG. 11, when holding the tool 50 on the tool holder 1, the operator opens the tool holder 1 and the truncated cone portion 52 so that the two key grooves 53 b are positioned on the front side and the rear side, respectively. Is arranged between the two protective members 16, 26. As shown in FIG. 12, the operator closes the tool holder 1 and holds the circumferential surface of the truncated cone portion 52 by the two protective members 16 and 26.

  Compared to the tool holder 1 of the first embodiment, the tool holder 1 of the second embodiment has a shorter vertical dimension. Further, the handles 18 and 28 are connected to the holding frames 15 and 25 through the spacers 19 and 29, and the handles 18 and 28 are curved so as to protrude left and right. Therefore, even if the tool 50 is a large diameter tool, the tool holder 1 does not interfere with the tool 50 and can hold the large diameter tool.

  Among the configurations of the tool holder 1 according to the second embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and detailed description thereof is omitted.

1 Tool holder 10 First holding part (holding part)
12c Key 16, 26 Protection member 17, 27 Protruding plate (holding part)
17c, 27c Latching recess 18, 28 Handle (handle part)
20 Second holding part (holding part)
30 Hinge (connecting part)
50 tools 53b keyway

Claims (5)

Holding one side part of the columnar tool and the other side part located on the opposite side of the one side part, two holding parts forming a semi-cylindrical shape along the one side part and the other side part;
A connecting portion that rotatably connects the side edge portions of the two holding portions;
A tool holder, comprising: a handle portion protruding from each of the two holding portions. 2. The tool holder according to claim 1, wherein an abutting portion that should abut on the tool is provided on the side edge portion of the holding portion so as to be separated from the connecting portion. The tool holder according to claim 1 or 2, wherein a protective member that protects one side surface portion and the other side surface portion of the tool is detachably provided inside each of the two holding portions. The tool holder according to any one of claims 1 to 3, wherein a key that engages with a key groove formed in the tool is provided on the side edge of the holding portion. The tool according to any one of claims 1 to 4, wherein a hooking part for hooking the tool is provided at an end of each of the two holding parts opposite to the handle part. Retaining tool.

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