JP2569268Y2 - Mounting jig for cutting tool holding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting jig for mounting an engaging member of a cutting tool holding device, which is mounted on a spindle of a cutting device and holds a cutting tool, to a spindle. is there.

[0002]

2. Description of the Related Art As one type of cutting tool holding device, there is a device which is attached to a spindle having a center hole opening at the tip to hold a cutting tool. For example, a cutting tool holding device described in Japanese Utility Model Publication No. 63-17601 developed by the present applicant includes an engaging member fixed in a center hole of a spindle by a fixing means, and a tool holding portion holding a cutting tool at one end. A tool holder having, at the other end, a mounting portion that can be undetachably engaged with the engagement member in a specific phase in the axial direction, and the tool holder is attached to the engagement member at the specific phase. It is configured to include relative rotation preventing means for preventing relative rotation between the tool holder and the spindle in the engaged state.

An engaging member mounting hole formed at the bottom of the center hole of the spindle and a mounting projection of the engaging member are eccentric with respect to the center line of the spindle and are formed asymmetrically in the left and right directions. In a state where these mounting holes and the mounting projections are fitted, the male screw member penetrates the engaging member and is tightened into the female screw hole formed on the bottom surface of the mounting hole, so that the relative position of the engaging member to the spindle is reduced. Rotation is blocked. These mounting holes, mounting projections, male screw members, female screw holes, etc., constitute the fixing means.

After the engaging member is fixed to the center hole of the spindle by the fixing means, a tool holder holding a cutting tool is inserted through the center hole of the tool holding portion, and the mounting portion is provided with a specific phase to the engaging member. , The axial movement of the tool holder is prevented. Then, relative rotation between the tool holder and the spindle is prevented by the relative rotation preventing means, so that the tool holder cannot move relative to the spindle in any direction.

However, in the cutting tool holding device, an eccentric mounting hole must be formed at the bottom of the center hole of the spindle, and a female screw hole must be formed at the bottom of the mounting hole. However, there is a problem that the cost increases. Therefore, the inventor of the present invention
Are relative to the tool holder and the engagement member.
In a cutting tool holding device including rotation prevention means, an engaging portion
Use a taper concentric with the center hole of the spindle.
For a collet with a hole and a tapered hole of the collet,
Corresponding taper shaft part and first thread part concentric with the taper shaft part
And an expanding member having a spindle or a collet.
And a second screw portion to be screwed with the first screw portion.
I thought about it.

[0006] In the cutting tool holding device of this configuration,
Spin with the engaging member held integrally by the collet
Inserted into the center hole of the dollar. And, the tape of the expanding member
The shaft part fits into the tapered hole of the collet and
The first thread of the open member is provided on the spindle or collet
The collet is screwed into the second thread part
It is expanded and its outer peripheral surface is brought into close contact with the inner peripheral surface of the center hole,
Engaging member firmly against the center hole of the spindle so that it cannot rotate
Fixed.

Thus, in the present cutting tool holding device,
Must form an eccentric hole at the bottom of the center hole of the spindle
And the engaging member can be firmly fixed in the center hole.
Therefore, processing becomes easy and cost can be reduced.
it can.

[0008] Particularly, when the second screw portion is provided on the collet
Does not require threading on the spindle,
Can be obtained. If the engaging member is
The collet is held in one piece with the
Is more firmly fixed to the spindle.
Even if the engaging member is not fixed to the spindle,
Rotation and axial movement of members can be prevented
It is.

However, this cutting tool holding device is assembled.
In order to screw the first threaded part into the second threaded part,
When rotating the material,
The engaging member that can take a desired relative phase is set to a predetermined relative position.
It must be kept in phase. However, in the center hole of the spindle
Both prevent rotation of the engaging member and rotate the expanding member.
It is not easy.

[0010]

[Problems to be solved by the invention] The present invention solves this problem.
In view of the rotation of the expanding member in the center hole of the spindle
Without disturbing operation, the engaging member can be
Keeping the relative phase determined
Mounting jig for cutting tool holding device that facilitates mounting to mounting
The task was to obtain

[0011]

[Means for Solving the Problems] And the gist of the first invention
(A) engaging part
Mounting part that can be engaged with the material in a specific phase and cannot be detached in the axial direction
And (b) the jig body has an engaging member.
The jig body and the spindle are engaged in the specific phase.
And stop the relative rotation.
Removable first relative rotation preventing means; and (c) the jig main body.
And the engaging member, both of which are in the specific phase.
To prevent relative rotation between the two in the engaged state.
First, the jig body is inserted into the spindle.
Second relative rotation preventing hand that can release relative rotation prevention at
And a step. In addition, the key to the second idea
The effect is that the mounting jig for the cutting tool holding device according to the first invention,
Further, release of the relative rotation prevention of the first relative rotation prevention means and
Release of relative rotation prevention by the second relative rotation prevention means
And release interlocking means.

[0012]

[Action] For mounting jig for cutting tool holding device according to the first invention
In this case, the jig body and the engagement member
In the state of rotation, the relative rotation of both
Is blocked. In this state, the jig body is
The jig body is inserted into the center hole and
And the spindle and the spindle are prevented from rotating relative to each other. As a result,
Relative rotation between the engaging member and the spindle via the
Is stopped, and the engaging member
Is positioned. In this state, the engaging member moves to the spindle.
After being fixed, the relative rotation prevention of the second relative rotation prevention means
When the jig body is released, the jig body is
It can rotate with respect to the jig, leaving the engaging member in the center hole.
The body can be withdrawn from the spindle. Also the second
The mounting jig for the cutting tool holding device according to the invention is a release interlocking means.
The first relative rotation preventing means
When the operation to release the stop is performed, the second relative rotation is blocked in conjunction
Release of the relative rotation inhibition of the means is also performed.

[0013]

[Effect of the invention] Therefore, according to the first invention,
Engaging member, jig body
Because the phase of the spindle and the spindle are adjusted,
Mounting holes and mounting with eccentric phase alignment between material and spindle
There is no need to do this by mating with protrusions, spindle and engagement
Processing of the member becomes easy. According to the second device,
An operation for releasing the relative rotation inhibition of the relative rotation inhibition means
Operation and release the relative rotation prevention of the second relative rotation prevention means.
It is no longer necessary to perform separate operations for
The effect of improving the usability of the mounting jig for the fixture holding device is obtained.
It is.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments common to the first invention and the second invention will be described in detail with reference to the drawings. 1 and 2, reference numeral 10 denotes a spindle of a machine tool. From the tip end surface 12 of the spindle 10, a bottomed center hole 14 extending toward the rear end side is formed concentrically with the axis thereof, and a cutting tool holding device 16 is attached to the center hole 14. The cutting tool holding device 16 includes the repetitive spindle 10
A main part 18 which is attached to and detached from the spindle, and an auxiliary part 20 which is permanently attached to the spindle 10 and assists in attaching and detaching the main part 18
And consists of

The main part 18 has a cylindrical tool holder 24, a large-diameter tool holding part 28 is provided at the front end, and a mounting part 30 is integrally formed at the rear end. A female screw hole 32 is formed in the tool holder 24 in the axial direction, and a pair of long holes 34 extending parallel to the axis of the female screw hole 32 are formed opposite to each other. A drive pin 38 press-fitted into the torque transmitting member 36 is inserted into the pair of elongated holes 34.
Are slidably fitted at both ends, and a torque transmitting member 36 is held movably in the axial direction via the drive pin 38. An engagement groove 40 capable of engaging with a tongue formed on a shaft-side end surface of a cutting tool (not shown) is formed on an end surface of the torque transmitting member 36 on the tool holding portion 28 side. A nut 42 is screwed into the female screw hole 32, and a tool is engaged with the hexagonal hole 44 of the nut 42 from the mounting portion 30 to rotate the nut 42.
The nut 42 and the torque transmitting member 36 move in the axial direction, and the amount of projection of the cutting tool from the tool holder 24 is adjusted.

The tool holder 28 has a collet 46 having a tapered outer peripheral surface corresponding to the tapered inner peripheral surface at the tip of the tool holder 24. A clamp nut 48 is screwed into a portion of the collet 46 protruding from the tool holder 24, and the clamp nut 48 is held only by a plurality of balls 50 provided between the collet 46 and the tool holder 24 so as to be rotatable only. Attached to body 24. Therefore, when the clamp nut 48 is rotated, the collet 46 is pushed into the tool holder 24 to reduce the diameter, and tightens and holds the shaft of the cutting tool.

On the other hand, the mounting portion 30 is projected from the rear end face 52 of the tool holder 24 and has a large diameter engaging head 54.
Are formed. The engaging head 54 has an oval shape as shown in FIG. 2 by flattening both sides.

A radially outward flange 58 is formed on the distal end side of the tool holder 24. Between the flange 58 and the clamp nut 48, the tool holder 24 and the spindle 10 are connected. A detent sleeve (hereinafter, simply referred to as a sleeve) 60 for preventing relative rotation is provided. From the rear end surface of the sleeve 60, a pair of engaging projections 6
2 is extended, and through a pair of engagement notches 64 formed in the flange 58, the distal end surface 12 of the spindle 10
Can be engaged with and disengaged from the engagement notch 70 formed in the groove. A spring 72 is disposed between the clamp nut 48 and the sleeve 60, and the sleeve 60 always comes into contact with the flange 58, and the engagement projection 62 engages with the engagement notch 64.
After that, the engagement state with the engagement notch 70 of the spindle 10 is maintained. Engagement projection 62 and engagement notch 6
In a state in which the tool holders 24 and 70 are engaged with each other, the relative rotation between the tool holder 24 and the spindle 10 is prevented via the sleeve 60 and the flange 58, and in a state where both are separated, the relative rotation is allowed. In this embodiment, the flange 5
8, sleeve 60, engagement projection 62, engagement notch 64, 7
The relative rotation preventing means is constituted by the 0, the spring 72 and the like.

At the bottom of the center hole 14 of the spindle 10,
The auxiliary part 20 is permanently attached. The auxiliary portion 20 has a collet 90, and the collet 90 is mounted on the bottom of the center hole 14 via a disc-shaped spacer 88. Spacer 8
8, a through hole 92 concentric with the center hole 14 is formed. The outer diameter of the collet 90 is slightly smaller than the inner diameter of the center hole 14, and a tapered hole 94 concentric with the center hole 14 is formed in the center of the collet 90 as shown in FIGS. At the same time, four slot grooves 96 extending in the axial direction are formed at equal angular intervals.

As shown in FIG. 5, a rectangular engaging notch 100 extending in the radial direction is provided on the distal end face 98 of the collet 90.
Are formed, and a fitting hole 102 extending in the axial direction concentrically with the tapered hole 94 is formed. Notch 1
The width of 00 is large enough to allow the engagement head 54 formed on the attachment portion 30 of the tool holder 24 and the engagement protrusion 152 of the first sleeve 150 of the attachment jig 119 to be described later to be fitted. I have. On the other hand, the fitting hole 102 is stepped, and communicates with the tapered hole 94 at the large diameter portion. FIG.
As shown in FIG. 7, the tool holder 24 is rotated 90 degrees in a state where the rear end face 52 of the tool holder 24 is in contact with the front end face 98 of the collet 90, so that the engagement head 54 is rotated.
Is also rotated by 90 degrees in the fitting hole 102 and engages with both shoulder surfaces 104 of the large-diameter portion, so that the mounting portion 30 is engaged with the collet 90 so that it cannot move in the axial direction.

In this embodiment, the periphery of the fitting hole 102 of the collet 90 functions as an engaging member integrally formed with the collet 90. Hereinafter, this portion is referred to as an engagement portion 106.

A screw member 110 as an expanding member is fitted in the tapered hole 94 of the collet 90. Screw member 110
Includes a tapered shaft portion 112 having a tapered surface corresponding to the tapered hole 94, and a male screw portion 114 as a first screw portion concentric with the tapered shaft portion 112. Taper shaft 112
A hexagonal hole 116 as a tool engagement portion
Are formed.

On the other hand, a female screw hole 118 as a second screw portion is formed concentrically on the bottom surface 117 of the center hole 14 of the spindle 10. With the spacer 88 and the collet 90 fitted in the center hole 14, the screw member 110 is inserted into the collet 90 and the spacer 88, and the hexagonal wrench 146 (see FIG. 9) is engaged with the hexagonal hole 116, and the screw member 11 is inserted.
By rotating 0, the collet 90 is pressed against the bottom surface 117 of the center hole 14 via the spacer 88, and the collet 90 is expanded so that the outer peripheral surface is brought into close contact with the inner peripheral surface of the central hole 14. . Therefore,
As shown in FIG. 3, the collet 90 is firmly fixed to the center hole 14 so as not to rotate relatively. In the present embodiment, the collet 90, the screw member 110, and the female screw hole 118 constitute a fixing means of the engaging portion 106.

FIGS. 7 to 10 show a mounting jig 119 for mounting the engaging portion 106 to the spindle 10. FIG. The mounting jig 119 includes a jig main body 120. The jig body 120 includes a stepped hollow shaft-shaped body portion 122 and a mounting portion 126 formed at the rear end. Main body 122
Has a large-diameter portion 124, and a pair of flattened portions 128 (see FIGS. 8 and 9) are formed in the large-diameter portion 124. The mounting portion 126 is provided on the rear end face 1 of the main body 122.
30 and a large-diameter engaging head 134 is formed. The engagement head 134 has an oval shape as shown in FIG. 10 by flattening both sides.

As shown in FIG. 8, the main body 122 has a through hole 136 penetrating the center and is generally cylindrical, but extends in the axial direction at two diametrically spaced locations on the peripheral wall thereof. An elongated hole 138 is formed. In addition, slot 138
90 degrees apart from the radial holes 14 shown in FIG.
0 is formed, and the pin 142 is erected. A hexagon wrench 146 indicated by a two-dot chain line in FIG. 9 is inserted into the through hole 136 of the jig main body 120 from the large diameter portion 124 side.

The first sleeve 1 is located outside the jig body 120.
50 are fitted so as to be relatively movable in the axial direction. A pair of engagement projections 152 extend from the rear end surface of the first sleeve 150. These engagement projections 152 are provided in FIG.
As is apparent from FIG.
4 are located on both sides of the chamfer. As shown in FIGS. 7 and 8, on the peripheral wall of the first sleeve 150,
Long holes 154 and 156 are formed at positions corresponding to the long holes 138 and the radial holes 140 of the jig body 120, respectively. The elongate hole 154 is shorter than the elongate hole 156, and as shown in FIG.
0 and the first sleeve 150 are prevented from rotating relative to each other.

A spring 162 is provided between the shoulder surface 160 of the jig body 120 and the distal end surface of the first sleeve 150.
2 is urged in a direction to protrude toward the mounting portion 126 of the jig main body 120.

A second sleeve 164 is fitted outside the first sleeve 150 so as to be relatively movable in the axial direction. A radial hole 165 is formed in the second sleeve 164, and as shown in FIG. 7, a pin 166 press-fitted into the radial hole 165 is inserted into the long hole 15 of the first sleeve 150.
6, and is fitted into the elongated hole 138 of the jig body 120. The jig body 120, the first sleeve 150 and the second sleeve 16 are moved by the pins 142 and 166.
4 is prevented from rotating.

A pair of engaging projections 168 extend from the rear end surface of the second sleeve 164, and
The engagement notch 70 can be engaged and disengaged.
A spring 180 is provided between the shoulder surface 178 of the jig main body 120 and the distal end surface of the second sleeve 164, and the engagement protrusion 168 of the second sleeve 164 always engages with the engagement notch 70 of the spindle 10. Are biased in a direction to engage with. When the engagement protrusion 168 and the engagement notch 70 are engaged, relative rotation between the jig main body 120 and the spindle 10 is prevented via the second sleeve 164, the first sleeve 150, and the pins 142 and 166, and both are stopped. In the state in which is released, relative rotation is allowed.

In this embodiment, the engagement protrusion 168, the engagement notch 70, the second sleeve 164, and the first sleeve 15
The first relative rotation preventing means is constituted by the pins 0, 142, 166, spring 180 and the like. Note that FIG.
As shown in the figure, the engagement projection 168 is in the same phase as the engagement projection 152 of the first sleeve 150, and both engagement projections 1
52,168 are simultaneously rotated by the same angle.

As shown in FIG. 7, when the mounting jig 119 is rotated 90 degrees with the rear end face 130 of the jig body 120 abutting against the front end face 98 of the collet 90, the engaging head is rotated. The portion 34 is also rotated 90 degrees in the fitting hole 102 to engage with the shoulder surface 104 of the large diameter portion, and the mounting portion 126 is engaged with the collet 90 so as not to move in the axial direction.

The operation of fixing the auxiliary portion 20 to the spindle 10 by the mounting jig 119 configured as described above will be described. First, the screw member 110 is inserted into the tapered hole 94 of the collet 90. Then, while holding the large-diameter portion 124 of the jig main body 120, the engaging head 134 of the mounting portion 126 is inserted into the fitting hole 102 through the engaging notch 100 of the collet 90. In this state, the engagement protrusion 152 of the first sleeve 150 abuts on the distal end face 98 of the collet 90, and the first sleeve 150 is advanced against the urging force of the spring 162.

Next, when the jig body 120 is rotated relative to the collet 90, the engaging head 134 is
At the same time as engaging with the shoulder surface 104 of the large diameter portion.
52 fits into the engagement notch 100. Thus, the engaging portion 106 is sandwiched between the engaging head 134 and the rear end surface 130, and the relative movement of the jig main body 120 and the collet 90 in the axial direction is prevented. In addition, the engagement protrusion 152 is
0, the first sleeve 150, the pin 1
The jig body 120 and the collet 90 are prevented from rotating relative to each other via the long holes 42 and the elongated holes 154.

After attaching the collet 90 to the jig main body 120 as described above, the male screw 11
4, the spacers 88 are inserted into the center hole 14 of the spindle 10 at an arbitrary phase, and the jig body 120 is rotated in the center hole 14. At first, the engagement notch 70 of the spindle 10 and the engagement protrusion 168 of the second sleeve 164 are out of phase, so that the engagement protrusion 168 is
The second sleeve 164 is advanced by a certain distance against the urging force of the spring 180,
The first sleeve 150 is not moved in the axial direction, and the engagement between the engagement protrusion 152 and the engagement notch 100 of the collet 90 is not released. The length of each slot 156 is so determined.

If the phases of the engagement notch 70 and the engagement protrusion 168 of the second sleeve 164 match during the rotation of the jig body 120, the second sleeve 164 is retracted by the urging force of the spring 180 to engage. The projection 168 has the engagement notch 70
And the relative rotation between the spindle 10 and the jig main body 120 is prevented.

Next, as shown in FIG.
The hex wrench 146 is inserted into the through hole 136 of the screw member 110 to engage with the hex hole 116 of the screw member 110. Then, if the screw member 110 is rotated by operating the hexagon wrench 146,
The collet 90 is pressed against the bottom surface 117 of the center hole 14 via the spacer 88, and the collet 90 is expanded so that its outer peripheral surface is brought into close contact with the inner peripheral surface of the center hole 14, so that the collet 90 is positioned at the center of the spindle 10. It is firmly fixed to the hole 14 so as not to be relatively rotatable and axially movable.

In this embodiment, the jig body 120 adjusts the relative phase between the auxiliary section 20 and the spindle 10.

When the mounting jig 119 is detached from the spindle 10, if the second sleeve 164 is advanced over a long distance against the urging force of the spring 180, the engagement projection 168 is formed.
Is released from the engagement notch 70 of the spindle 10 so that the jig main body 120 and the spindle 10 can rotate relative to each other, and the pin 166 abuts against the end of the elongated hole 156 of the first sleeve 150, so that the spring 162 The first sleeve 150 is advanced together with the second sleeve 164 against the urging force of the first sleeve 150. Therefore, the engagement protrusion 152 is disengaged from the engagement notch 100 of the collet 90, and the jig body 120 and the auxiliary portion 20 can be relatively rotated. In this embodiment
The pin 166 fixed to the second sleeve 164 and the first slot
The jig body 120 and the slot
Release of the relative rotation prevention with the pindle 10 and the jig body 12
0 and the release of the relative rotation inhibition of the auxiliary unit 20 are linked.
The release interlocking means is configured.

As described above, the jig body 120 and the spindle
Relative rotation with the tool 10, the jig body 120 and the auxiliary part 20
When the jig main body 120 is rotated by 90 degrees in a state where both of the relative rotation prevention and
06 is disengaged, and the engaging head 134 is
3, the auxiliary part 20 can be left inside the spindle 10 as shown in FIG. 3, and only the mounting jig 119 can be extracted. In this embodiment, the engagement protrusion 152, the engagement notch 100, the first sleeve 150, the second sleeve 164, the pins 142 and 166, and the spring 1
62, 180, etc., the jig main body 120 and the auxiliary portion 20 are prevented from rotating relative to each other when they are engaged in a specific phase, and the jig main body 120 is inserted into the center hole 14 of the spindle 10. , The second relative rotation preventing means capable of canceling the relative rotation prevention is configured.

After fixing the auxiliary part 20 to the spindle 10,
The attachment of the main part 18 to the spindle 10 is performed. A cutting tool such as a drill is held in the tool holder 24 of the main part 18 in advance with the amount of protrusion adjusted, and is inserted into the center hole 14 of the spindle 10 at an arbitrary phase. At first, the engaging head 54 of the mounting portion 30 of the tool holder 24 comes into contact with the distal end face 98 of the collet 90 to prevent the tool holder 24 from being inserted further. The projection 62 does not engage with the engagement notch 70 of the spindle 10, and the relative rotation between the tool holder 24 and the spindle 10 is allowed. If the tool holder 24 is rotated by an arbitrary amount in this state, the engaging head 54 fits into the engaging notch 100, the engaging head 54 fits into the fitting hole 102, and the engaging protrusion 62 Abuts on the distal end surface 12 of the spindle 10. Further, if the tool holder 24 is rotated 90 degrees while being pressed against the urging force of the spring 72, the phases of the engagement notch 70 and the engagement protrusion 62 match, and the urging force of the spring 72 causes the sleeve 60 to rotate. The engaging projection 62 engages with the engaging notch 70 to prevent the relative rotation between the spindle 10 and the tool holder 24, and the engaging head 54 is attached to the shoulder of the large diameter portion of the fitting hole 102 of the collet 90. Tool holder 2 engaged with surface 104
4 is prevented from coming off from the spindle 10, and the tool holder 24 is easily attached to the spindle 10.

When the tool holder 24 is to be removed from the spindle 10, the sleeve 60 is disengaged from the engagement notch 70 with the sleeve 60 against the urging force of the spring 72. Can be rotated 90 degrees, and the attachment and detachment of the cutting tool to and from the spindle 10 can be performed quickly and easily.

As described above, the auxiliary part 20 is permanently mounted on the bottom of the spindle 10 to prepare a plurality of main parts 18 and to provide the tool holders 24 of the respective main parts 18.
Hold the appropriate cutting tool, and if necessary,
It becomes possible to change the cutting tool every time.

During the cutting process, the rotational torque of the spindle 10 is transmitted from the rotation preventing sleeve 60 to the tool holder 24 and transmitted from the drive pin 38 to the cutting tool via the torque transmitting member 36.

In the tool holding device 16 of this embodiment,
Since the collet 90 has the same diameter and concentricity with the center hole 14 of the spindle 10, it is not necessary to provide an eccentric mounting hole or the like on the bottom surface 117 of the center hole 14 of the spindle 10. It can be carried out.

Further, in the tool holding device 16 of the present embodiment, since the engaging portion 106 is provided integrally with the collet 90, there is an advantage that the number of parts can be reduced. A composite member may be manufactured, and both may be fixed later.

Further, in the tool holding device 16 of this embodiment, the male screw portion 114 is
Although the female screw hole 118 is formed in the center hole 14 of the spindle 10, a female screw portion or a male screw portion may be provided in the collet, and the screw member provided with the male screw portion or the female screw portion may be screwed into the collet. Even in this case, the spindle 1 can be sufficiently extended by the expanding force of the collet.
This prevents relative rotation between the zero and the collet. In this case, since it is not necessary to provide the female screw hole 118 in the center hole 14, the processing of the center hole 14 is further facilitated.

On the other hand, in the mounting jig 119 of the present embodiment, the first sleeve 150 and the second sleeve 164 are separate bodies, but the integral jig having both the engagement projection 152 and the engagement projection 168 is provided. May be used. The engagement projection 152 may be made longer than the engagement projection 168 so that when the integral member is advanced against the urging force, the latter is first disengaged and then the former is disengaged.

Further, in the mounting jig 119 of this embodiment, since the phase of the auxiliary section 20 with respect to the spindle 10 is adjusted by the jig main body 120, the auxiliary section 20 does not need to have a phase adjusting means itself. , Collet 9
Various fixing means other than the combination of 0 and the screw member 110 can be employed.

In addition, the present invention can be carried out in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cutting tool holding device according to an embodiment of the present invention;
It is a front sectional view showing the state where the cutting tool holding device which is a use object of a jig was attached to the spindle.

FIG. 2 is a right side view of a main part of the cutting tool holding device.

FIG. 3 is a front sectional view showing a state in which an auxiliary part of the cutting tool holding device is attached to a spindle.

FIG. 4 is a front sectional view showing an auxiliary portion of the cutting tool holding device.

FIG. 5 is a left side view of the auxiliary unit of FIG. 4;

FIG. 6 is a right side view of the auxiliary unit shown in FIG. 4;

FIG. 7 is a front sectional view showing a state in which the engaging member is mounted on the spindle by the mounting jig for the cutting tool holding device according to the embodiment of the present invention;

FIG. 8 is a front sectional view of the mounting jig.

FIG. 9 is a front view of the mounting jig.

FIG. 10 is a right side view of the mounting jig of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Spindle 14 Center hole 16 Cutting tool holding device 18 Main part 20 Auxiliary part 24 Tool holder 28 Tool holding part 30 Attachment part 60 Detent sleeve 62 Engagement projection 64 Engagement notch 70 Engagement notch 90 Collet 94 Taper hole 100 Mating notch 102 Fitting hole 106 Engagement part 110 Screw member 112 Tapered shaft part 114 Male screw part 118 Female screw hole 119 Mounting jig 120 Jig body 126 Mounting part 134 Engagement head 142 Pin 150 First sleeve 152 Engagement protrusion 164 Second sleeve 166 Pin 168 Engagement protrusion

Claims (2)

(57) [Scope of request for utility model registration] 1. A tool holder for holding a cutting tool at one end.
And a mounting part at the other end, and
Tool holder spindle inserted into center hole of handle
The mounting part and a specific position to prevent
Phase can be undetachably engaged and spin
An engaging member that can be fixed in any phase is inserted into the center hole of the dollar.
A mounting jig for mounting to a pindle , wherein the mounting jig can be engaged with the engaging member in a specific phase so that it cannot be detached in the axial direction.
Jig body having a functional mounting portion, and a state in which the jig body is engaged with an engagement member in the specific phase.
The relative rotation between the jig body and the spindle
The first relative rotation preventing hand that can release the relative rotation prevention
Between the step and the jig body and the engagement member,
In the state of engagement in a specific phase, relative rotation of both
While the jig body is inserted into the spindle.
Second phase that can release relative rotation inhibition when inserted
Switching, characterized in that it has to include a pair rotation preventing means
Mounting jig for cutting tool holding device. 2. The phase of said first relative rotation preventing means.
Release of anti-rotation prevention and relative rotation of the second relative rotation prevention means
Including a release interlocking means for interlocking the release of
The mounting jig for a cutting tool holding device according to claim 1, wherein
Utensils.