JPH1086076A - Pulling screw type tapered shank cutter pulling-out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tapered shank cutter pulling-out device of a pulling screw type with which it is possible to remove a tool holder from the tapered shank cutter without requiring a hammering operation by a hammer. SOLUTION: The construction of the captioned device is such that a holder securing plate 3 is provided upright on the base 2, a generally U-shaped holder to which a tool holder is secured is formed in the holder securing plate 3 while opening upward, the holder securing plate 3 is provided with shaft members 6 and 7 which extend reaward respectively from the right and left parts interposing the holder fitting groove 31, one shaft member is provided with a jack mounting plate 4 so as to be rotated in the right and left directions, the jack mounting plate 4 is provided with a jack 5 so as to allow a ram 51 to advance and retreat forward and backward, the jack mounting plate 4 is formed with a hanging groove 41 which is hung on the other shaft member by being rotated around one shaft member 7, and in a state in which the hanging groove 4 is hung on the other shaft member 6, the ram 51 is disposed at a position opposite the base end face of the tool holder 31 secured to the holder fitting groove 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a draw screw type taper shank cutter removing device used for removing a taper shank cutter from a tool holder.

[0002]

2. Description of the Related Art FIG. 7 is a longitudinal sectional view showing a state in which a taper shank cutter 11 is mounted on a tool holder 10. FIG. As shown in this figure, the tool holder 10 is formed with a tapered hole (generally a Morse taper) 10a whose diameter gradually increases toward the distal end side. The base end 11a of the cutter 11 is formed in the tapered hole 10a. Fit and attach. Furthermore, the cutter 11 is drawn into the tapered hole 10a by screwing the pull screw 12 into the base end 11a of the cutter 11 from the base end side of the tool holder 10, and the cutter 11 is securely fixed to the tool holder 10. In addition, a pull stud is attached to a screw hole 10b at the base end side opening of the tool holder 10 with a spanner.
On the other hand, in order to remove the cutter 11 from the tool holder 10, as shown by a two-dot chain line in FIG.
A hexagon wrench is fitted in a hexagon hole formed in the head 12a of the head, and the pull screw 12 is slightly unscrewed and loosened (distance L in FIG. 7). The cutter 11 was pulled out by hitting the base end of the punch rod 13 with a hammer.

[0003]

However, in the conventional method, the operation of removing the cutter from the tool holder requires skill. That is, even if the head of the punching rod is hit with a hammer, it may not be able to be pulled out well, or it may be dangerous to hit a different place. The present invention has been made to solve these problems.

[0004]

In order to solve the above-mentioned problems, a "pull screw type taper shank cutter removing device" according to the present invention does not hit the hammer with a hammer when removing the cutter from the tool holder. As a good alternative, the cutter is pulled out of the tool holder by pressing the head of the punch rod using the pressure of a hydraulic jack instead of the hammer. In addition, it is preferable that the removal device has a configuration that can be used when the cutter is attached to the tool holder.

[0005] More specifically, a puller used to remove a taper shank cutter from a tool holder having a flange portion on the outer periphery of a central portion and having a taper shank cutter formed in a tapered hole formed at the tip end surface. A screw-type taper shank cutter removing device, wherein a holder fixing plate is erected on a pedestal, and a substantially U-shaped holder fitting groove to which the tool holder is fixed is opened upward in the holder fixing plate. The holder fixing plate is provided with a shaft member extending rearward from both left and right portions sandwiching the holder fitting groove, and one of the shaft members allows the jack mounting plate to rotate in the left and right direction. A jack is provided on the jack mounting plate so that the ram can move forward and backward in the front-rear direction. The jack mounting plate is rotated around the one shaft member to thereby rotate the other shaft. A hook groove to be hooked on the member is formed, and in a state where the hook groove is hooked to the other shaft member, a jack ramger is arranged at a position facing the base end surface of the tool holder attached to the holder fitting groove. A pull screw type taper shank cutter removing device characterized in that: In addition, preferably, in addition to the above-described configuration, the holder fitting groove is formed with a large-diameter portion into which a flange portion of the tool holder is fitted, and a lower end portion of the large-diameter portion is provided with a tool holder. A pull screw type taper shank cutter removing device, wherein a key engaged with a notch formed in a flange portion is formed to protrude upward.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the pull-thread type taper shank cutter removing device 1 of the present invention will be described in more detail. The present invention is applied to a tool in which a tapered shank cutter 11 is detachably attached to a tool holder 10. FIG. 7 is a partial longitudinal sectional view showing an example of such a tool, and shows a state where the cutter 11 is attached to the tool holder 10. As shown in this figure, the tool holder 10 is formed with a tapered hole 10a whose diameter gradually increases toward the distal end side.
1a is fitted and attached. Further, by screwing the pull screw 12 into the base end 11a of the cutter 11 from the base end side of the tool holder 10, the cutter 11 is drawn to the tapered hole 10a and is securely fixed to the tool holder 10. In addition, a pull stud is used by being attached to a screw hole 10b at the base end side opening of the tool holder 10 with a spanner. Further, a substantially disk-shaped flange portion 10c is formed on the tool holder 10 so as to protrude radially outward, and a notch 1 is formed in a part of the flange portion 10c in the circumferential direction.
0d is formed.

FIG. 1 is a perspective view showing an embodiment of a pull-thread type taper shank cutter removing device 1 according to the present invention. FIG. 2 shows the cutter removing device 1 of FIG.
FIG. 3 is a perspective view showing a state where a tool holder 10 with a cutter 11 is attached. FIG. 3 is a plan view of FIG. 2, and FIG. 4 is a longitudinal sectional view of FIG. Further, FIG.
FIG. 6 is a rear view of the cutter removal device 1 of FIG.
FIG. 2 is a longitudinal sectional view of a front part cut in the front-rear direction and viewed from the front. The removal device 1 of this embodiment includes a tool holder 10
And a jack mounting plate 4 having a jack 5 capable of moving a receiving seat 51 along the axial direction of the tool holder 10 held by the holder fixing plate 3. It is provided on a pedestal 2.

The pedestal 2 is made of a substantially rectangular plate, and a holder fixing plate 3 is provided upright at the front end of the upper surface. That is, the holder fixing plate 3 is fixed along the front end of the pedestal 2 so as to project vertically upward with respect to the pedestal 2. Further, the holder fixing plate 3 is formed in a slightly wide plate shape, and a substantially U-shaped holder fitting groove 31 is formed at the center in the left-right direction. The holder fitting groove 31 is formed such that the rear part from the center part in the front-rear direction of the holder fixing plate 3 is slightly larger than the front part and is an enlarged diameter part 31a. The enlarged diameter portion 31a of the holder fitting groove 31 is formed to have a diameter compatible with the flange portion 10c of the tool holder 10. A notch 10 d formed in the flange 10 c of the tool holder 10 is provided below the enlarged diameter portion 31 a of the holder fitting groove 31.
Is protruded upward. The upper end of the holder fitting groove 31 is chamfered to form an inclined surface 31b whose width in the left-right direction increases as it goes upward, so that the tool holder 10 can be easily fitted.

As shown in FIG. 6, on the rear surface of the holder fixing plate 3, substantially rectangular plate-like pressing plates 33 are provided on both right and left sides of the holder fitting groove 31. The pressing plate 33 is provided so as to slightly extend inward in the left-right direction radially inward of the holder fitting groove 31. The distance between the front end face of the enlarged diameter portion 31a of the holder fitting groove 31 and the front end face of the holding plate 33 is determined by the tool holder 1.
The size is adapted to the axial thickness of the zero flange 10c. Therefore, the tool holder 10 can be attached to the holder fixing plate 3 by fitting the flange portion 10c of the tool holder 10 into the enlarged diameter portion 31a of the holder fitting groove 31.
Since the upper end of the holding plate 33 is chamfered to form an inclined surface 33a that expands upward, the flange portion 10c of the tool holder 10 to the enlarged diameter portion 31a of the holder fitting groove 31 is formed.
Can easily be fitted.

The holder fixing plate 3 has a holder fitting groove 3
Shaft members 6, 7 extending rearward are provided on both left and right portions with respect to 1. The first shaft member 6 provided on the left side of the holder fixing plate 3 and the second shaft member 7 provided on the right side have the same shape, respectively, and are perpendicular to the holder fixing plate 3 and the pedestal 2. From the same height. Each of the shaft members 6, 7 has reduced diameter portions 6a, 6b, 7a, 7b formed at both front and rear ends, and further has a threaded portion formed outside the reduced diameter portions 6a, 6b, 7a, 7b in the axial direction. I have. After each of the shaft members 6 and 7 has the front-side reduced diameter portions 6a and 7a inserted into the holder fixing plate 3,
Nuts 61 and 71 with flanges are screwed and fixed to front screw portions protruding from the front end surface of the holder fixing plate 3. Also, a nut with flange 62 is screwed and fixed to the rear thread portion of the first shaft member 6. On the other hand, a jack mounting plate 4 is rotatably provided on the rear reduced diameter portion 7 b of the second shaft member 7, and a nut 72 with a flange screwed to the rear screw portion of the second shaft member 7. This prevents the second shaft member 7 from falling off.

The jack mounting plate 4 is formed in a plate shape. As shown in FIG. 5, when the jack mounting plate 4 is rotated counterclockwise around the second shaft member 7 to the left, A catching groove 41 engaged with the rear reduced diameter portion 6b is formed so as to open downward in a substantially U-shape. In addition, this hook groove 41 is the first groove.
The size is adapted to the diameter of the rear reduced diameter portion 6b of the shaft member 6. Moreover, when the hook groove 41 is hooked on the rear reduced diameter portion 6b of the first shaft member 6, the front end surface of the rear reduced diameter portion 6b and the flange of the nut with flange 62 screwed to the rear screw portion are provided. , The jack mounting plate 4 is prevented from rattling. In a state where the hook groove 41 is hooked on the first shaft member 6, as shown in FIG. 5, the lower end surface 42 of the jack mounting plate 4 abuts on the upper surface of the pedestal 2, and the load of the jack mounting plate 4 is supported. Therefore, the bending of the shaft members 6 and 7 is prevented. The jack mounting plate 4
Is formed as an inclined surface 42a extending upward to form a gap between the pedestal 2 and the bottom surface. This is a hindrance when the jack mounting plate 4 is rotated around the second shaft member 7. This is so as not to be.

The jack mounting plate 4 is provided with a handle 43 protruding leftward from the left end surface in a state where the hook groove 41 is engaged with the first shaft member 6. The outer peripheral surface of the handle 43 is knurled, and serves as a slip stopper. In addition, on the upper end surface in this state,
A bar-shaped support shaft 4 is provided at the left-right direction position corresponding to the second shaft member.
4 is formed to protrude upward. As shown by a two-dot chain line in FIG. 5, when the jack mounting plate 4 is rotated clockwise to the right around the second shaft member 7 as shown by a two-dot chain line in FIG. Abuts on the upper surface of
It is configured to support the load of the jack mounting plate 5.

A jack 5 is provided on a front end face of the jack mounting plate 4. As the jack 5, a small hydraulic jack is preferably used, and the ram is provided so as to advance and retreat in the front-rear direction.
Is provided at a position concentric with the tool holder 10 fixed to the holder fixing plate 3. As shown in FIG. 2, the operation of the jack 5 is performed by attaching a rod-shaped handle 5 to a substantially cylindrical handle joint 52 provided at the base end of the jack 5.
3 is fitted. That is, the handle 53
Is detachable from the handle joint 52, and is used by being attached to the handle joint 52 as necessary.

Next, a description will be given of a use state of the pulling screw type taper shank cutter removing device 1 of the above embodiment. First, a method of removing the taper shank cutter 11 from the tool holder 10 will be described. This includes
It is performed by sequentially performing the following operations (1) to (10). (1) As shown in FIG. 1, the handle 43 of the jack mounting plate 4
, The jack mounting plate 43 is rotated clockwise around the second shaft member 7 and turned to the right. (2) The tool holder 10 having the cutter 11 attached to the tapered hole 10a on the tip side is attached to the holder fixing plate 3. This is performed by fitting the flange portion 10c of the tool holder 10 to the enlarged diameter portion 31a of the holder fitting groove 31 of the holder fixing plate 3 with the base end of the tool holder 10 on the rear side. At this time, the flange 10 of the tool holder 10
The notch 10d formed in c is directed downward, and this notch 10d is fitted to the key 32 formed to project from the lower part of the enlarged diameter portion 31a of the holder fixing plate 3. As a result, the tool holder 10 is stopped and fixed to the holder fixing plate 3. (3) Insert a hexagon wrench from the opening on the base end side of the tool holder 10, fit the hexagon wrench into the hexagon hole of the head 12 a of the pull screw 12 fixing the cutter 11 to the tool holder 10, and pull The screw 12 is slightly loosened and screwed back. An appropriate distance L for retraction is, for example, about 2 to 5 mm. If a pull stud is provided in the screw hole 10b at the base end side opening of the tool holder 10 before these operations, the pull stud is removed with a spanner. (4) Instead of a hexagon wrench, insert the pull-out bar 13
The distal end is engaged with the hexagonal hole of the head 12a of the pull screw 12 and is arranged horizontally. (5) Holding the handle 43 of the jack mounting plate 4, rotate the jack mounting plate 4 counterclockwise around the second shaft member 7 and return it to the left side. (6) The release stem of the hydraulic jack 5 is closed so that the ram of the hydraulic jack 5 can be raised. (7) By operating the handle joint 52 of the hydraulic jack 5, the seat 5 provided at the tip of the ram of the hydraulic jack 5
1 is moved until it comes into contact with the base end face of the punch rod 13. Thereafter, the handle 53 is attached to the handle joint portion 52 and operated, and the pull bar 13 is pressed toward the cutter 11 to pull out the cutter 11 from the tool holder 10. (8) After the cutter 11 comes off, open the release stem of the hydraulic jack 5 and lower the ram. (9) Holding the handle 43 of the jack mounting plate 4, rotate the jack mounting plate 4 clockwise around the second shaft member 7 and tilt it to the right. (10) After removing the removal rod 13, remove the pull screw 12 from the cutter 11 using a hexagon wrench. Thereby, the cutter 11 can be completely removed from the tool holder 10.

Further, as described above, the removal device 1 of the above embodiment can be used not only for removing the cutter 11 from the tool holder 10 but also for attaching the cutter 11 to the tool holder 10. Can be. Therefore, next, the taper shank cutter 11 is attached to the tool holder 10 by using the removal device 1 of the above embodiment.
A method for attaching the hologram will be described. This is performed by sequentially performing the following operations (1) to (3). (1) Holding the handle 43 of the jack mounting plate 4, rotate the jack mounting plate 4 to the right around the second shaft member 7 and lower it. (2) The tool holder 10 is fitted and fixed in the holder fitting groove 31 of the holder fixing plate 3. At this time, the flange 10c of the tool holder 10 is engaged with the holder fitting groove 31 so that the notch 10d formed in the flange 10c of the tool holder 10 is engaged with the key 32 projecting from the lower part of the holder fitting groove 31. To the enlarged diameter portion 10c. Thereby, rotation of the tool holder 10 with respect to the holder fixing plate 3 is prevented. After the cutter base end 11a is fitted into the taper hole 10a formed on the distal end side of the tool holder 10 in advance, the pulling screw 12 is inserted from the base end side of the tool holder 10 to the cutter base end. The cutter 11 is temporarily fixed by being screwed into a screw hole formed in 11a. (3) A hexagonal wrench is fitted into a hexagonal hole formed in the head 12a of the pulling screw 12, and the pulling screw 12 is tightened to securely fix the cutter 11 to the tool holder 10. Further, a pull stud is screwed into the base end side opening and tightened with a spanner.

[0016]

As described above in detail, according to the pull-thread type taper shank cutter removing device of the present invention, the cutter can be removed from the tool holder without using a hammer. Therefore, anyone can easily and safely attach and detach the cutter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a pull screw type taper shank cutter removing device of the present invention.

FIG. 2 is a perspective view showing a state in which a tool holder is fixed to the removal device of FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a longitudinal sectional view of FIG.

FIG. 5 is a rear view of the removal device of FIG. 1;

FIG. 6 is a longitudinal sectional view of the removal device of FIG. 1 cut at the center in the front-rear direction and viewed from the front.

FIG. 7 is a partial longitudinal sectional view showing an example of a tool to which the present invention is applied, and shows a state where a cutter is mounted on a tool holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pull-out type taper shank cutter removal device 2 Pedestal 3 Holder fixing plate 4 Jack mounting plate 5 Jack 6 First shaft member 7 Second shaft member 10 Tool holder 10a Taper hole 10b Screw hole 10c Flange portion 10d Notch 11 Cutter 11a Cutter base end part 12 Pull screw 12a Head part 13 Pull rod 31 Holder fitting groove 31a Large diameter part 32 Key 33 Holding plate 41 Hook groove 51 Receiving seat

Claims (2)

[Claims] 1. A threaded taper used to remove a taper shank cutter from a tool holder having a flange on the outer periphery of a central portion and having a taper shank cutter mounted in a tapered hole formed in a tip end surface. A shank cutter removal device, wherein a holder fixing plate is erected on a pedestal, and a substantially U-shaped holder fitting groove for fixing the tool holder is formed in the holder fixing plate so as to open upward. The holder fixing plate is provided with a shaft member extending rearward from both left and right portions sandwiching the holder fitting groove, and one of the shaft members is provided with a jack mounting plate rotatably in the left and right direction, A jack is provided on the jack mounting plate so as to advance and retreat the ram in the front-rear direction. The jack mounting plate is rotated around the one shaft member and pulled to the other shaft member. A hook groove to be hooked is formed, and in a state where the hook groove is hooked on the other shaft member, a jack ramger is arranged at a position facing a base end face of a tool holder attached to the holder fitting groove. A pull screw type taper shank cutter removal and removal device characterized by the above-mentioned. 2. The holder fitting groove is formed with an enlarged-diameter portion into which a flange of the tool holder is fitted, and is formed at a lower end of the enlarged-diameter portion on the flange of the tool holder. 2. The pull-thread type taper shank cutter removing device according to claim 1, wherein a key engaged with the notch is formed so as to protrude upward.