JP2003291076A - Pipe mounting/removing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe mounting/removing tool capable of setting the protruding length of each engaging pawl from the body simply to the initial value even in case the tip of the engaging pawl is broken by any cause. <P>SOLUTION: The pipe mounting/removing tool includes a body 2 having a hole 3 to admit insertion of a cooling pipe and also a pair of engaging holes 4 provided at the peripheral edge of the hole 3 and the engaging pawls 10 which are inserted into the respective holes 4, where male threads 11 provided on part of the peripheral surface are fitted in female threads 5 provided on part of the inside surface of each hole 4, and whose forefront parts protrude for a certain length from the body 2 to be engaged with engaging grooves on the cooling pipe side. Even in case the tip of each pawl 10 is broken, the protruding length of the pawl 10 from the body 2 can be adjusted easily by changing the relative screwing position of the male threads 11 on the pawl 10 with respect to the female threads 5 in the hole 4. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe holding jig, and more particularly to a jig for attaching and detaching a pipe (for example, a cooling pipe) to a tool holder (for example, an arbor holding a milling blade). The present invention relates to a pipe attaching / detaching jig.

[0002]

2. Description of the Related Art An example of a tool holder for holding a cutting tool such as a milling blade is shown in FIG. That is, the tool holder 15 has a thin-walled cylindrical portion 16 having an outer peripheral surface at one end that is gradually increased in diameter from one end to the other end, and a tapered surface 17 of the cylindrical portion 16. And a flange 18 that is provided continuously to the maximum diameter portion of the
A cutting tool (not shown) such as a milling blade is attached to the other end.

A hole 19 for the cooling liquid is provided in the central portion of the tool holder 15 in a state of penetrating in the axial direction, and the boundary portion of the hole 19 for the cooling liquid with the cylindrical portion 16 is more than the other portion. Is also formed on the large-diameter pipe mounting portion 20, and an appropriate female screw 21 is screwed onto the inner peripheral surface of the pipe mounting portion 20.

As shown in FIG. 4 and FIG. 5, the cooling pipe 25 has a cylindrical pipe body 26 integrally provided with a flange 27 protruding outward in the radial direction at one end, and one end of the pipe body 26. It is composed of a pipe set screw 28 mounted on the outer peripheral side of the part, and is attached to the pipe mounting part 20 of the tool holder 15 via the pipe set screw 28.

The pipe set screw 28 has an annular shape. A male screw 29 which is screwed into the female screw 21 of the pipe mounting portion 20 is screwed on the outer peripheral surface of the pipe main body 26. Is designed to be inserted. In this case, the pipe body 26 is attached to the locking portion 30 on the inner peripheral side of the pipe set screw 28.
The flange 27 is locked.

[0006] A pair of engagement grooves 31, 31 are provided on one end face of the pipe set screw 28 in the axial direction at positions facing each other with the center of the pipe set screw 28 as the center.
Engaging claws of a pipe attaching / detaching jig 35 described later can be engaged in the insides of the pipes 1, 31.

As shown in FIG. 3, the pipe attaching / detaching jig 35 comprises a rod-shaped handle 36 and a cylindrical main body 37 integrally connected to the central portion of the handle 36. A hole 38 for a pipe for inserting the pipe body 26 of the cooling pipe 25 is provided at the center of the
On the end surface of the main body 37, a pair of engaging claws 39, 39 are integrally provided in a position facing each other with the center of the hole 38 for the pipe as a center so as to project in the axial direction.

To attach the cooling pipe 25 to the tool holder 15 by using the pipe attaching / detaching jig 35 having the above-described structure, the pipe attaching / detaching jig 35 is provided in the pipe hole 38 of the main body 37. The pipe body 26 of the cooling pipe 25 is inserted, and in this state, the engaging claws 39, 39 of the body 37 of the pipe attaching / detaching jig 35 are engaged with the engaging groove 31 of the pipe set screw 28,
31 to engage. Then, the pipe attaching / detaching jig 35 is rotated in a predetermined direction, and the male screw 29 of the pipe fixing screw 28 is screwed into the female screw 21 of the coolant hole 19 of the tool holder 15 and tightened with a predetermined torque. In this case, an O-ring 40 is interposed between the pipe set screw 28 and the tool holding jig 15 to seal the two. In this way, the cooling pipe 25 can be attached to the tool holder 15.

On the other hand, from the tool holder 15 to the cooling pipe 25
To remove, the pipe main body 26 of the cooling pipe 25 is inserted into the pipe hole 38 of the main body 37 of the pipe attaching / detaching jig 35, and in this state, the engaging claws 3 of the pipe attaching / detaching jig 35 are inserted.
9, 39 are engaged in the engagement grooves 31, 31 of the pipe set screw 28. Then, the pipe attaching / detaching jig 35 is rotated in the opposite direction to that at the time of attachment, and the male screw 29 of the pipe fixing screw 28 is
Loosen the tightening of the hole 19 for the cooling liquid of FIG. In this way, from the tool holding portion 15 to the cooling pipe 2
5 can be removed.

[0010]

However, in the pipe attaching / detaching jig 35 having the above-described structure, when the engaging claw 39 is broken for some reason, the engaging claw 39 is formed.
Is integrally formed with the main body 37 of the pipe attaching / detaching jig 35, the tip end of the main body 37 of the pipe attaching / detaching jig 35 is re-machined using a milling machine or the like, and the engaging claw 39 is again formed.
And the hole 38 for the pipe must be reopened. In addition, the pipe attaching / detaching jig 35 including the engaging claws 39
Since the tip of the main body 37 is subjected to heat treatment such as quenching in order to prevent abrasion, after heat treatment such as tempering, it is re-cut using a milling machine, and then heat treated such as quenching again. Must be given.

The present invention has been made in view of the conventional problems as described above, and even if the engaging claws are broken for some reason, there is no need for machining with a milling machine or the like, and baking is not necessary. An object of the present invention is to provide a pipe attachment / detachment jig that can be easily reused without requiring heat treatment such as tempering and quenching.

[0012]

The present invention employs the following means in order to solve the above problems. That is, the invention according to claim 1 is a pipe attaching / detaching jig used for attaching / detaching a pipe to / from a tool holding tool, wherein a pipe hole for inserting the pipe is provided and a hole for the pipe is provided. A main body having at least a pair of holes for engaging claws at the peripheral edge of the pipe, and being inserted into the holes for the engaging claws, and having a tip portion protruding from the main body and provided in a part of the pipe. Can be engaged with the
In addition, an engaging claw capable of adjusting a protruding length from the main body is provided. According to the pipe attaching / detaching jig of the present invention, when the engaging claw portion protruding from the main body is broken for some reason, by adjusting the protruding length of the engaging claw from the main body, The engaging claw can be set to the initial protruding length.

According to a second aspect of the present invention, there is provided the pipe attaching / detaching jig according to the first aspect, wherein the engaging claw has a hexagonal rod shape. According to the pipe attaching / detaching jig of the present invention, the engaging claw can be easily formed by using a commercially available hexagonal rod.

The invention according to claim 3 is the jig for attaching and detaching a pipe according to claim 1 or 2, wherein a male screw is screwed on a part of a peripheral surface of the engaging claw and the engaging claw is engaged. A female screw that can be mutually screwed with the male screw is screwed on a part of the inner peripheral surface of the hole, and the relative screwing position of the engaging claw with respect to the engaging hole is adjusted. It is characterized in that the projection length of the compound claw from the main body is adjusted. According to the pipe attachment / detachment jig of the present invention, when the portion of the engaging claw protruding from the main body is broken for some reason, the male screw of the engaging claw is relatively moved with respect to the female screw of the engaging hole. By adjusting the screwing position, the initial protrusion length can be set.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention shown in the drawings will be described below. 1 and 2 show an embodiment of a pipe attaching / detaching jig according to the present invention. The pipe attaching / detaching jig 1 includes a main body 2 and an engaging claw inserted into the main body 2. 10 and 10.

The main body 2 has a cylindrical shape, and a hole 3 for a pipe having a predetermined depth is provided in the central portion from one end surface to the other end surface. The pipe body 26 of the cooling pipe 25 shown in FIGS. 4 and 5 is inserted.

At the peripheral portion of the pipe hole 3 of the main body 2, a pair of engaging claw holes 4 and 4 are provided in a portion facing each other with the pipe hole 3 as a center, and penetrated in the axial direction. The engaging claws 10 are inserted into the respective engaging claw holes 4. A predetermined female screw 5 is screwed on the inner peripheral surface of the other end of each engaging claw hole 4, and the female screw 5 and a male screw 11 of an engaging claw 10 described later are screwed together. It is supposed to do.

At a predetermined position on the outer peripheral surface of the main body 2, the main body 2
A screw hole (not shown) which penetrates through the hole from the direction orthogonal to the axis and communicates with the hole 4 for each engagement claw, and the engagement claw 10 is provided in the screw hole. A fixing screw 7 for fixing inside 4 is screwed.

A cylindrical projection 8 is integrally provided at the other end of the main body 2, and the tip of the projection 8 is formed in a quadrangular prism shape, and a box wrench 9 or the like is fitted to the quadrangular prism part. By doing so, the main body 2 can be rotated via the box wrench 9 or the like.

The engaging claws 10 are hexagonal rod-shaped and are inserted into the holes 4 for the engaging claws of the main body 2. On the peripheral surface of the other end of the engaging claw 10, a male screw 11 matching the female screw 5 of the hole 4 for the engaging claw of the main body 2 is screwed, and this male screw 11 is used for the engaging claw of the main body 2. By engaging the female screw 5 of the hole 4 with the engaging claw 10, the engaging claw 10 is inserted into the hole 4 for the engaging claw of the main body 2.

In this case, by changing the screwing position of the male screw 11 of the engaging claw 10 relative to the female screw 5 of the hole 4 for the engaging claw, the tip portion of the engaging claw 10 of the main body 2 of the engaging claw 10 is changed. The length of protrusion from one end surface can be adjusted. A hexagonal hole (not shown) having a predetermined depth is provided on the other end surface of the engaging claw 10, and a commercially available hexagonal wrench or the like (not shown) is engaged in the hexagonal hole. The engaging claw 10 can be rotated via a hexagon wrench or the like.

The engaging claw 10 is inserted into the engaging claw hole 4 of the main body 2, and the tip portion is projected from the one end surface of the main body 2 by a predetermined length, and then fixed to the screw hole of the main body 2. By screwing and tightening the screw 7, the hole 4 for the engaging claw is held at a predetermined position, and the protruding length of the tip portion from the one end surface of the main body 2 is held at a predetermined value. .

A part of the peripheral surface of the tip of the engaging claw 10 is chamfered to have a predetermined length and depth, and the chamfered part provides a predetermined distance between the engaging claw 10 and the inner peripheral surface of the hole 4 for the engaging claw. Gaps are formed.

Next, the operation of the pipe attaching / detaching jig 1 according to this embodiment having the above-described structure will be described.
In this embodiment, a tool holder that holds a cutting tool such as a milling blade, and a cooling pipe attached to the tool holder have the same structure as that described in the conventional example. Therefore, the same reference numerals are given and detailed description thereof will be omitted.

First, in order to attach the cooling pipe 25 shown in FIG. 5 to the tool holder 15 shown in FIG. 4 by the pipe attaching / detaching jig 1 according to this embodiment, the pipe attaching / detaching jig 1 is used.
The pipe main body 26 of the cooling pipe 25 is inserted into the pipe hole 3 of the main body 2, and the tip ends of the engaging claws 10 and 10 projecting from one end surface of the main body 2 in this state are inserted into the pipe set screw 28. Engage into the engagement grooves 31, 31 on the end face. Then, a box wrench 9 or the like is fitted on the rectangular columnar protrusion 8 of the pipe holding jig 1, and the box wrench 9 or the like is rotated in a predetermined direction to form a male screw 29 on the outer peripheral surface of the pipe set screw 28.
Is screwed onto the female screw 21 of the hole 19 for the cooling liquid of the tool holder 15, and is tightened with a predetermined torque. In this way
The cooling pipe 25 can be attached to a predetermined position of the tool holder 15.

Next, in order to remove the cooling pipe 25 from the tool holder 15 by the pipe attaching / detaching jig 1 according to this embodiment, the pipe of the cooling pipe 25 is inserted into the pipe hole 3 of the pipe attaching / detaching jig 1. The main body 26 is inserted, and the engaging claws 10 and 10 projecting from one end surface of the main body 3 in this state.
The front end of the engaging groove 31 on one end surface of the pipe set screw 28,
31 to engage. Then, a box wrench 9 or the like is fitted on the rectangular column-shaped projection 8 of the pipe holding jig 1, and the box wrench 9 or the like is rotated in the opposite direction to when the pipe wrench 9 is attached. Tool holder 15
Loosen the tightening of the hole 19 for the cooling liquid of FIG. In this way, the cooling pipe 25 is attached to the tool holder 15
It can be removed from.

If the tip of the engaging claw 10 protruding from the one end surface of the main body 2 of the pipe attaching / detaching jig 1 is broken for some reason, the fixing screws 7, 7 are loosened and engaged. The pawl 10 is made rotatable, a hexagon wrench or the like (not shown) is engaged in the hexagonal hole on the other end surface of the engagement pawl 10, and the engagement pawl 10 is rotated via the hexagon wrench or the like. The relative screwing position of the male screw 11 of the engaging claw 10 to the female screw 5 of the hole 4 for the engaging claw is changed so that the tip of the engaging claw 10 is projected from the one end surface of the main body 2 by a predetermined length. . Then, the fixing screws 7, 7 are tightened to fix the engaging claw 10 in the hole 4 for the engaging claw, and the tip portion of the engaging claw 10 is held in a state of protruding by a predetermined length from the one end surface of the main body 2. To do. In this way, by projecting the tip end portion of the engaging claw 10 from the one end surface of the main body 2, it is possible to make it ready for use again.

In the pipe attaching / detaching jig 1 according to this embodiment having the above-described structure, the tip of the engaging claw 10 protruding from the one end surface of the main body 2 is broken for some reason. In addition, the relative screwing position of the male screw 11 of the engaging claw 10 to the female screw 5 of the hole 4 for the engaging claw is changed so that the tip end of the engaging claw 10 is projected from one end surface of the main body 2. Then, it becomes possible to make it ready for use again. Therefore, unlike the conventional one, it is not necessary to re-process one end of the main body with a milling machine or the like to form the engaging claws, and heat treatment such as tempering and quenching is not required, and workability is greatly improved. It will be possible to improve.

Furthermore, in this embodiment, since the engaging claw 10 is formed separately from the main body 2, the engaging claw 1 is formed.
0 and the main body 2 can be formed of materials different in hardness. Therefore, by forming only the engaging claw 10 from a hard material, damage and wear of the engaging claw 10 can be prevented.

In the above description, the engaging claw 10
Is formed in a hexagonal rod shape, but it may be formed in another prismatic shape, a cylindrical shape, or the like, and in that case, the same effect can be obtained. Further, the engaging claw 10
Although the hexagonal hole is provided on the other end surface of the and the engaging claw 10 is rotated by engaging a commercially available hexagonal wrench or the like in the hole, the engaging claw 10 can be rotated by other known means.
May be rotated.

[0031]

As described above, according to the pipe attaching / detaching jig of the present invention according to the first aspect, when the engaging claw portion protruding from the main body is broken for some reason. By adjusting the protruding length of the engaging claw from the main body, the engaging claw can be set to the initial protruding length. Therefore, when the tip of the engaging claw is broken, the work of re-machining the tip of the main body with a milling machine or the like to re-form the engaging claw, unlike the conventional one, becomes unnecessary and tempered, No heat treatment such as quenching is required. Further, since the engaging claw is formed separately from the main body, the engaging claw and the main body can be formed of materials having different materials and hardness, so that the wear resistance of the engaging claw can be improved. It will also be possible to improve durability.

According to the pipe attaching / detaching jig of the second aspect, since the engaging claws have a hexagonal bar shape, the engaging claws can be formed by using a commercially available hexagonal bar. . Therefore, it is easy to replace the engaging claws.

Further, according to the pipe attaching / detaching jig of the third aspect, when the engaging claw portion projecting from the main body is broken for some reason, the engaging screw of the engaging claw is engaged. By changing the screwing position of the dowel hole relative to the female screw, the projection length of the engaging claw from the main body can be set to an initial value. Therefore, when the tip of the engaging claw is broken, the work of re-machining the tip of the main body with a milling machine or the like to re-form the engaging claw, unlike the conventional one, becomes unnecessary and tempered,
No heat treatment such as quenching is required. Further, since the engaging claw is formed separately from the main body, the engaging claw and the main body can be formed of materials having different materials and hardness, so that the wear resistance of the engaging claw can be improved. It will also be possible to improve durability.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a pipe attaching / detaching jig according to the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a schematic view showing an example of a conventional pipe attaching / detaching jig.

FIG. 4 is a schematic view showing an example of a tool holder.

FIG. 5 is a schematic view showing a cooling pipe attached to the tool holder.

[Explanation of symbols]

1 Pipe attachment / detachment jig 2 body 3 Pipe holes 4 Holes for engaging claws 5 female screw 10 engaging claws 11 male screw 15 Tool holder 25 cooling pipe 31 engagement groove

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Daizo Ogatsu             1528, Nakashinden, Yokoi, Kobe-cho, Anpachi-gun, Gifu Prefecture             Address Mitsubishi Materials Corporation Gifu Factory             Within F term (reference) 3C031 EE00 EE59

Claims (3)

[Claims] 1. A pipe attachment / detachment jig used when attaching / detaching a pipe to / from a tool holder, wherein a pipe hole for inserting the pipe is provided, and at least a peripheral portion of the pipe hole is provided. A body provided with a pair of holes for engaging claws, and inserted into the holes for each of the engaging claws,
A tip portion protruding from the main body, engageable with an engaging portion provided on a part of the pipe, and an engaging claw capable of adjusting a protruding length from the main body. Jig for pipe installation and removal. 2. The pipe attaching / detaching jig according to claim 1, wherein the engaging claw has a hexagonal rod shape. 3. The pipe attaching / detaching jig according to claim 1, wherein a male screw is screwed on a part of a peripheral surface of the engaging claw, and an inner peripheral surface of the engaging hole is formed. By screwing a female screw that can be mutually screwed with the male screw in a part, and adjusting the relative screwing position of the engaging claw to the engaging hole,
A pipe attachment / detachment jig, wherein a length of protrusion of the engaging claw from the main body is adjusted.