JP5314778B2 - Work tools - Google Patents

Description

  The present invention relates to a work tool used for adjusting an object to be adjusted, such as a boring tool that can be adjusted to a desired machining diameter.

  As a work tool used to adjust the machining diameter of a boring tool to a desired value, for example, a work tool described in JP 2010-131686 A (Patent Document 1) has been known. The work tool described in Patent Document 1 includes a spanner part that fits a position adjusting screw (also called a dial ring) of a boring tool and rotates the position adjusting screw to a desired scale, and a clamp screw of the boring tool. And a shaft portion that is fitted into the shaft and rotates the clamp screw in a loosening direction or a tightening direction.

JP 2010-131686 A

  However, the present inventor has found that there are further points to be improved in the conventional work tool. That is, the scale stamped on the position adjusting screw has a small step width, and the rotation adjustment of the position adjusting screw is a delicate operation. For this reason, the scale of the position adjusting screw may not be clearly visible depending on the visual acuity of the worker and the working environment.

  In view of the above circumstances, an object of the present invention is to provide a work tool capable of clearly recognizing a dial ring scale and efficiently performing a rotation adjustment work.

  For this purpose, the present invention has an outer peripheral edge and an engaged part provided on the inner diameter side of the outer peripheral edge, and the first screw element rotatably attached to the fixing part is provided with the fixing part and the first engaging part. It is assumed that the work tool is used to rotate a desired scale amount by comparing a scale provided on one of the outer peripheral edges of one screw element with a mark provided on the other peripheral edge. The work tool includes a grip part gripped by an operator, an engagement part connected to the grip part and engaged with an engaged part to transmit rotational torque, and a scale and a mark visually connected to the grip part. And a magnifying glass.

  According to the present invention, since the grip portion is provided with the magnifying portion, the operator can perform delicate rotation adjustment work while grasping the grip portion with one hand and enlarging and observing the scale and the mark. . Therefore, the worker can efficiently perform delicate rotation adjustment work. In addition, even an operator with weak visual acuity can easily adjust the rotation with one hand. The engaged portion of the first screw element may be polygonal or other specific shape, for example, a plus shape or a star shape.

  In order to visually enlarge the scale and the mark in the loupe portion, as a preferred embodiment, the engaged portion of the first screw element is a polygonal convex portion, and the engaging portion is a polygonal through hole. The convex portion is received from the one side opening end, and the loupe portion is arranged to face the other side opening end of the through hole. The shape of the engaging portion is not particularly limited. For example, the engaging portion may be a socket type that receives the engaged portion. Alternatively, as another embodiment, the engaging portion may be C-shaped or U-shaped.

  The attachment posture of the loupe part with respect to the grip part is not particularly limited. As one embodiment, the engaging portion has a frame shape, and the loupe portion includes a lens that faces the frame-shaped engaging portion substantially in parallel, and a frame body that holds the outer edge of the lens. As another embodiment, the loupe portion may be arranged to be inclined with respect to the engaging portion.

  The dimension of the loupe portion is not particularly limited. As an embodiment, the inner size of the frame body of the loupe portion may be formed larger than the outer size of the frame-shaped engaging portion, and the lens of the loupe portion may cover the entire frame-shaped engaging portion. . According to this embodiment, when the engaging portion is engaged with the engaged portion, the entire engaged portion is visually enlarged, so that the visibility is good.

  By the way, depending on the environment of the work location, it may be dark and difficult to visually recognize the scale. Therefore, as an embodiment, a light source that illuminates the scale and the mark may be further provided. The arrangement of the light source is not particularly limited. In a preferred embodiment, the light source is disposed on the frame of the loupe unit. According to this embodiment, since the loupe portion and the engaging portion are adjacent to each other, the scale and the mark can be suitably illuminated. In a more preferred embodiment, the light source is arranged on the side farther from the grip portion of the loupe frame. In another embodiment, the light source is disposed on the grip.

  As a further preferred embodiment of the present invention, the work tool further includes a power source part of the light source and a switch for energizing or shutting off between the light source and the power source part. As another embodiment, the power source unit of the light source and the work tool are separated, and both are connected by lead wires.

  Although the present invention is not limited to one embodiment, the power supply unit and the switch are arranged in the grip unit. According to this embodiment, the operator can operate the switch while grasping the grip portion, and the work efficiency is improved. As another embodiment, the switch may be in the frame of the loupe part or in the engaging part.

  As a preferred embodiment of the present invention, the work tool is engaged with the head of the second screw element to rotate the second screw element that is screwed into the fixing portion and prohibits the movement of the first screw element. And a wrench portion. According to this embodiment, since one work tool has two types of tool functions, if one work tool is prepared in the adjustment work of an adjustment target having two types of screw elements, That is, the operator can proceed with the adjustment work with one work tool without changing the tool.

  As one embodiment, the loupe portion and the engaging portion are disposed on one end side of the grip portion, and the wrench portion is disposed on the other end side of the grip portion. In another embodiment, the wrench portion is disposed at the center portion of the grip portion.

  As described above, by using the work tool of the present invention, the operator can hold the grip portion of the work tool with one hand and perform a delicate rotation adjustment work while magnifying and observing the scale and the mark. Therefore, the operator can efficiently perform delicate rotation adjustment work, and work efficiency is improved.

It is a perspective view which shows the working tool which becomes one Embodiment of this invention. It is a figure which shows the adjustment operation | work using the working tool of the embodiment. It is a perspective view which shows an example of the tool for boring which can adjust a process diameter. FIG. 4 is a cross-sectional view of the boring tool shown in FIG. 3. It is a perspective view which shows the work tool which becomes other embodiment.

  Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.

  FIG. 1 is a perspective view showing a work tool according to an embodiment of the present invention. FIG. 2 is a diagram showing an adjustment work using the work tool of the embodiment. FIG. 3 is a perspective view showing an example of a boring tool capable of adjusting the machining diameter. 4 is a cross-sectional view of the boring tool shown in FIG.

  First, an outline of a boring tool capable of adjusting a machining diameter will be described with reference to FIGS. 3 and 4.

  A cylindrical boring bar 101 as an adjustment object includes a tool body 102, a tip holder 103 attached to the front end portion of the tool body 102, a cutting tip 104 attached to the tip portion of the tip holder 103, and a tip holder. A dial ring 106 that is screwed into the end portion of 103 and a clamp screw 111 that fixes the tip holder 103 are provided. The rear end portion of the tool main body 102 is connected to a shank member (not shown) directly or via an extension member, and this shank member is attached to a spindle of a machine tool, and the tool main body 102 is advanced by rotating the spindle. . As a result, the boring bar 101 rotates at high speed around the axis, and the cutting tip 104 performs boring cutting on the workpiece (workpiece).

  The chip holder 103 has a round bar-like leg portion 103b and a square head portion 103a that is coupled to the tip side of the leg portion 103b and has a larger cross-sectional shape than the leg portion 103b. An attachment hole 102 h that passes through the front end of the tool body 102 perpendicular to the axis of the tool body 102 is formed at the front end of the tool body 102. The leg portion 103b of the tip holder 103 passes through the mounting hole 102h, whereby the tip holder 103 is held so as to be able to advance and retract in the extending direction of the mounting hole 102h, that is, the radial direction of the tool body 102. An anti-rotation key for preventing the tip holder 103 from rotating in the mounting hole 102h is provided on the outer periphery of the leg 103b closer to the head 103a than the male screw 103c. As a result, the tip holder 103 is prevented from rotating.

  A cutting tip 104 is detachably fixed to the square head 103a protruding from the mounting hole 102h by a countersunk screw 105. Further, a male screw 103c is formed on the outer periphery of the end of the leg 103b protruding from the mounting hole 102h, and this male screw 103c is formed on the inner periphery of the cylindrical body 106a that forms the body of the dial ring 106. And screw fit. Thus, the dial ring 106 is a first screw element that is rotatably attached to the tool body 102 via the tip holder 103.

  An engaged portion 106b is formed on the outer periphery of the distal end portion of the cylindrical body 106a on the side far from the tool body 102. The engaged portion 106b has a hexagonal nut shape and is a head exposed from the mounting hole 102h of the boring bar 101. A flange 106c protruding in the outer diameter direction is formed on the outer periphery of the intermediate portion of the cylindrical body 106a, and a scale 106d is engraved on the outer peripheral edge of the flange 106c. The end face of the flange 106c on which the scale 106d is engraved is a tapered surface that is inclined so that the axial thickness of the flange becomes thinner toward the outer diameter direction. The flange end surface 106e opposite to the scale 106d is a flat surface perpendicular to the axis of the dial ring 106.

  An annular lock flange 107 is provided on the outer periphery of the cylindrical body 106a in contact with the flange end face 106e. The lock flange 107 and the tool body 102 are fixed portions with respect to the tip holder 103 and the cutting tip 104 that can move forward and backward. A plurality of halved cutouts 107k are formed at the outer peripheral edge of the lock flange 107, and a bottomed screw whose opening side is formed in a semicircular shape at a position corresponding to the cutout 107k of the tool body 102. The lock flange 107 is detachably fixed to the tool body 102 by screwing the screw 110 into the screw hole 102k formed with the hole 102k and aligned with the notch 107k. A mark 107 m is engraved on one end face of the lock flange 107. The mark 107m is located on the outer peripheral side of the tool main body 102 and faces the scale 106d. Thereby, the rotational position of the dial ring 106 is displayed.

  A male screw 106g is formed on the outer periphery of the end of the cylindrical body 106a that is closer to the tool body 102, and an annular preload nut 108 is screwed onto the male screw 106g. An annular wave spring 109 is fitted on the outer periphery of the cylindrical body 106a located between the preload nut 108 and the lock flange 107 described above. By tightening the preload nut 108, the wave spring 109 is compressed between the preload nut 108 and the lock flange 107 to apply the preload. As a result, the flange end surface 106e of the flange 106c comes into close contact with the one end surface of the lock flange 107.

  The front end of the tool body 102 is formed with a screw hole 102b that is connected perpendicularly to the mounting hole 102h. A clamp screw 111 is screwed into the screw hole 102b. The clamp screw 111 has a hexagonal recess on the top surface and a screw on the leg. When the clamp screw 111 is tightened, the tip end of the leg of the clamp screw 111 presses the leg 103b of the tip holder 103, and the tip holder 103 is fixed to the tool body 102 so as not to advance or retreat. As described above, the clamp screw 111 is a second screw element that is screwed into the tool body 102 and prohibits the movement of the tip holder 103 and the dial ring 106.

  The adjustment of the boring bar 101 will be described. First, the wrench portion of the work tool is fitted on the top surface of the clamp screw 111 and is rotated to loosen the clamp screw 111. Thereby, the fixation of the chip holder 103 is released. Next, as shown in FIG. 2, the engagement portion 12 of the work tool 11 is fitted to the engaged portion 106b (hexagon nut) of the dial ring 106, and the dial ring 106 is desired while comparing the mark 107m and the scale 106d. Rotate by the amount of scale. As a result, the tip holder 103 moves back and forth in accordance with the scale amount of the turning operation, and the distance from the lock flange 107 to the cutting tip 104, that is, the machining diameter of the boring bar 101 is adjusted. After setting the cutting tip 104 to a position corresponding to a desired machining diameter, the wrench portion of the work tool is fitted on the top surface of the clamp screw 111 and is rotated to tighten the clamp screw 111. As a result, the tip holder 103 is again fixed so that it cannot move forward and backward, and the adjustment operation is completed.

  Next, the work tool which becomes one Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the work tool 11 is gripped by a worker 12 and an engaging portion 13 that is connected to the grip 12 and engages with an engaged portion 106 b of the dial ring 106 to transmit rotational torque. And a loupe portion 16 connected to the grip portion 12 and visually expanding the scale 106c of the dial ring 106 and the mark 107m of the lock flange 107.

  The grip portion 12 is a metallic long plate extending in a straight line, and is integrally formed with a metal engagement portion 13. The engaging portion 13 has a hexagonal frame shape and defines a through hole 14. And the to-be-engaged part 106b which is a hexagonal nut-shaped convex part is received from one side opening end. The frame-shaped engaging portion 13 and one end of the grip portion 12 are integrally connected by a connecting portion 13c which is a long plate extending in a crank shape.

  The loupe portion 16 is disposed so as to face the other opening end of the through hole 14. The loupe portion 16 includes a transparent convex lens 17 that faces the frame-shaped engaging portion 13 substantially in parallel, and a frame body 18 that holds the outer edge of the convex lens 17. The frame body 18 is an annular body that extends along the outer edge of the convex lens 17, and an attachment portion 18 b that is connected to one end of the grip portion 12 is formed at one circumferential direction of the frame body 18.

  FIG. 2 is a diagram showing a state in which the engaging portion 13 is engaged with the engaged portion 106b. Since the outer peripheral shape of the engaged portion 106b is a regular hexagon and the inner peripheral shape of the engaging portion 13 is also a regular hexagon, the engaging portion 13 engages with the engaged portion 106b in a relatively non-rotatable manner. Further, since the thickness of the hexagonal frame portion of the engaging portion 13 (thickness from the inner edge to the outer edge) is formed smaller than the radial dimension of the flange 106c as shown in FIG. 2, the scale 106d is in the engaged state. Appears outside the outer edge of the engaging portion 13.

  Returning to FIG. 1, the inner dimension of the frame 18 of the loupe portion 16 is formed larger than the outer dimension of the frame-shaped engaging portion 13. And the convex lens 17 covers the whole frame-shaped engaging part 13 seeing from the other side opening end of the through-hole 14. As a result, the scale 106d and the mark 107m outside the engaging portion 13 are visually enlarged by the loupe portion 16.

  As described above, according to the present embodiment, the operator who grips the grip portion 12 of the work tool 11, engages the engaging portion 13 with the engaged portion 106 b, and rotates the dial ring 106, Thus, the visually enlarged mark 107m and scale 106d can be visually recognized. Therefore, the operator can clearly read the numerical value of the scale pointed by the mark 107m, and can suitably perform a delicate work of adjusting the processing diameter of the boring bar 101.

  The work tool 11 further includes a wrench portion 19 that engages with the head of the clamp screw 111. The wrench portion 19 is a linear rod-like body extending from the other end of the grip portion 12. The wrench portion 19 has a regular hexagonal cross-sectional shape, and can engage with a hexagonal recess formed on the top surface of the clamp screw 111 so as not to be relatively rotatable, and transmits rotational torque to the clamp screw 111. be able to. The wrench portion 19 is attached and fixed to one surface of the long plate-like grip portion 12.

  According to this embodiment, in the work of adjusting the working diameter of the boring bar 101, the rotation operation of the clamp screw 111 and the rotation operation of the dial ring 106 can be performed with one work tool 11. Therefore, the operator does not have to bother to prepare two work tools for the clamp screw 111 and the dial ring 106, and the work diameter of the boring bar 101 can be adjusted efficiently.

  Next, another embodiment of the present invention will be described. FIG. 5 is a perspective view showing another embodiment of the present invention. Regarding the other embodiments, the same components as those described above are denoted by the same reference numerals, description thereof is omitted, and different configurations will be described below. The work tool 21 according to another embodiment further includes a light source 22 that illuminates the scale 106d and the mark 107m. The light source 22 is disposed on the frame 18 of the loupe unit 16 and irradiates light toward the entire engaging unit 13 facing the loupe unit 16.

  The frame 18 is made of resin and is integrally formed with a semi-cylindrical power source 23 that protrudes from the frame 18 and extends. The power supply unit 23 is attached and fixed to the other surface of the long plate-like grip portion 12. Thereby, the power supply part 23 comprises the grip part grasped by the operator together with the metal grip part 12. The power supply unit 23 incorporates a battery 24. The battery 24 supplies power to the light source 22. The light source 22 is disposed on the side of the frame 18 far from the grip portion 12 and is connected to a power source portion 23 disposed adjacent to the grip portion 12 by a lead wire (not shown).

  The power supply unit 23 is provided with a switch 25 that energizes or shuts off the battery 24 and the light source 22. The switch 25 is turned on (energized) when pushed once, and turned off (cut off) when pushed twice. The switch 25 is arranged on the power supply unit 23 on the side close to the frame 18. The switch 25 is disposed on the surface of the power supply unit opposite to the engagement unit 13 side. Thus, the operator can easily turn on / off the switch 25 with the thumb of the hand gripping the power supply unit 23 and the grip unit 12.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The work tool according to the present invention is advantageously used in a cutting tool that requires fine adjustment, such as a scale of a boring bar.

  DESCRIPTION OF SYMBOLS 11 Work tool, 12 Grip part, 13 Engagement part, 14 Through-hole, 16 Loupe part, 17 Convex lens, 18 Frame, 19 Wrench part, 21 Work tool, 22 Light source, 23 Power supply part, 24 Battery, 25 Switch, 101 Boring bar, 102 Tool body, 102h Mounting hole, 102k Screw hole, 103 Tip holder, 103a Head, 103b Leg, 103c Male thread, 104 Cutting tip, 106 Dial ring, 106b Engagement part (hex nut), 106c Flange, 106d scale, 106f female thread, 106g male thread, 107 lock flange, 107k notch, 108 preload nut, 109 wave spring, 110 screw, 111 clamp screw.

Claims (11)

A first screw element having an outer peripheral edge and an engaged portion provided on an inner diameter side of the outer peripheral edge, and rotatably attached to the fixing part. A work tool for rotating a desired scale amount by comparing the scale provided on one of the outer peripheral edges with the mark provided on the other,
A gripping part gripped by the worker,
An engagement portion coupled to the grip portion and engaged with the engaged portion to transmit rotational torque;
A work tool, comprising: a magnifying part connected to the grip part and visually expanding the scale and the mark. The engaged portion of the first screw element is a polygonal convex portion,
The engaging portion is a polygonal through-hole and receives the convex portion from one side opening end,
The work tool according to claim 1, wherein the loupe portion is disposed so as to face the other opening end of the through hole. The engagement portion is frame-shaped,
The work tool according to claim 2, wherein the loupe portion includes a lens that faces the frame-shaped engagement portion substantially in parallel to the lens, and a frame that holds an outer edge of the lens.   The inner dimension of the frame body of the loupe part is formed larger than the outer dimension of the frame-shaped engaging part, and the lens of the loupe part covers the entire frame-shaped engaging part. Work tools.   The work tool according to claim 1, further comprising a light source that illuminates the scale and the mark.   The work tool according to claim 5, wherein the light source is disposed on a frame of the loupe unit.   The work tool according to claim 6, wherein the light source is disposed on a side farther from the grip portion of the frame of the loupe portion.   The work tool according to claim 5, further comprising a power source unit of the light source, and a switch for energizing or interrupting between the light source and the power source unit.   The work tool according to claim 8, wherein the power supply unit and the switch are arranged in the grip portion.   A wrench portion that engages with a head portion of the second screw element to rotate the second screw element that is screwed into the fixing portion and prohibits movement of the first screw element. Item 10. The work tool according to any one of Items 1 to 9. The loupe part and the engaging part are arranged on one end side of the grip part,
The work tool according to claim 10, wherein the wrench portion is disposed on the other end side of the grip portion.

Images