JP2000015516A - Milling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a milling device in which a cutter main body can be installed solidly without generating a play, as well as the cutter main body can be installed simply. SOLUTION: A second adaptor 20 provided with a through hole 21 for rotary member at the center, and plural through holes 22 for holding member at the periphery, is installed to form a space 23 between a first adaptor 10 which is installed to the front end surface of a main shaft spindle, and a rotary member 30 is housed to expose its tip end face in a central part of the space 23 through the through hole to the center part so as to be held to the second adapter 26. At the same time, the screw part 31 of the rotary member, and the screw hole 41 of at the center part of an elevation member are engaged to house the elevation member in the space, plural holding parts 50 are projected on the front end side through the through holes at the periphery provided to the second adapter, and a ring form cutter main body 60 is locked to the locking parts 51 at the front ends of the holding members 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling apparatus, and more particularly, to a cutter body having a plurality of tips mounted on the outer periphery of a tip thereof, which is firmly secured to an adapter attached to the tip of a spindle. The present invention relates to a milling device that can be easily attached to a milling device.

[0002]

2. Description of the Related Art Conventionally, in a milling apparatus, when a cutter main body having a plurality of tips mounted on a tip outer peripheral portion is attached to a rotating spindle spindle, an adapter is attached to the tip portion of the spindle spindle, and the adapter is attached to the adapter. In order to attach the cutter body to the adapter in this manner, various methods have conventionally been used.

In recent years, in such a milling apparatus as described above, in order to enable the cutter body to be easily attached to the adapter with one touch, it is disclosed in, for example, Japanese Utility Model Publication No. 61-198161. As described above, a plurality of notches extending in the axial direction are provided in the inner peripheral portion of the ring-shaped cutter body at required intervals in the circumferential direction, and the above-described notch is provided on the outer peripheral portion of the intermediate member attached to the adapter by the center bolt. A projection is provided to enter into the notch provided in the cutter body, and a key member is provided at a position corresponding to the notch of the cutter body on the distal end surface of the adapter, for pressing a side wall on the rotation direction side of the notch. ,
There has been developed an intermediate member provided with a key groove which engages with the key member at a position different from the projection on the outer peripheral portion of the adapter side end.

Here, in such a milling apparatus, when the above-mentioned intermediate member is attached to an adapter by a center bolt, and the projection of the intermediate member is aligned with the notch of the cutter body, the cutter body is cut. Into the adapter side, and then rotate the cutter body to lock it to the key member, thereby holding the cutter body on the protrusion of the intermediate member. In this state, tighten the center bolt. The intermediate member is fixed to the adapter, and the cutter main body is attached to the adapter by sandwiching the inner peripheral portion of the intermediate member where the notch is not provided between the protrusion of the intermediate member and the adapter.

However, when the cutter main body is attached to the adapter such that the inner peripheral portion of the cutter main body is sandwiched between the adapter and the projection of the intermediate member, the tip of the tip provided on the outer peripheral portion of the tip end of the cutter main body is not provided. The cutter body is held by the adapter and the intermediate member at a position away from the position.In this milling device, the cutter body is rotated, and the tip of the cutter body is provided with a tip provided on the outer peripheral portion of the tip of the cutter body. When cutting is performed, runout of the cutter body cannot be sufficiently suppressed, cutting accuracy decreases, the quality of the surface to be cut deteriorates, or the chip attached to the cutter body breaks. Or other problems.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in a milling apparatus in which an adapter is attached to the tip of a rotating main spindle and a cutter body is attached to the adapter. Is what you do.

That is, according to the present invention, in a milling apparatus in which the cutter main body is mounted on the adapter mounted on the tip of the rotating main spindle as described above, the cutter main body can be easily mounted. An object of the present invention is to make it possible to attach a cutter body firmly so that the cutter body does not rattle when rotating a cutter body to cut an object to be cut.

[0008]

In the milling apparatus according to the present invention, in order to solve the above-mentioned problems, the first adapter 10 is attached to the tip of the rotating main spindle, and the center is provided with a rotating member for the rotating member. The second adapter 20 provided with the through-hole 21 and a plurality of through-holes 22 for the holding member in the periphery is formed by forming the space 23 between the second adapter 20 and the first adapter 10. 1 adapter 1
0, the rotating member 30 provided with the screw portion 31 is housed in the center of the space 23, and the rotating member 3
0 is held by the second adapter 20, and the distal end surface of the rotating member 30 is exposed through the through-hole 21 for the rotating member. The lifting member 40 provided at the bottom is accommodated in the space 23 so as to be moved up and down by the rotation of the rotating member 30, and the plurality of holding members 50 provided with the locking portions 51 at the distal ends are connected to the above-mentioned holding members 50. A ring-shaped cutter body 60 having a plurality of tips 61 attached to the outer periphery of the tip is made to protrude from the elevating member 40 through the through hole 21 for the holding member provided in the second adapter 20, and to the above-described respective components. The lifting member 40 is raised by the rotation of the rotating member 30, and the locking portion 51 of the holding member 50 and the second adapter 2 are locked by the locking portion 51 of the holding member 50.
That is, the cutter body 60 is held between zero and zero.

Here, in the milling apparatus of the present invention, when attaching the cutter body 60, each holding member 50 is projected from each of the elevating member 40 through each of the holding member through holes 22 provided in the second adapter 20. The lifting member 40 housed in the space 23 between the first adapter 10 and the second adapter 20 is located at the tip side of the milling device, that is, at the lower side of the space 23, and as described above, The cutter body 60 is locked by a locking portion 51 provided at the tip end of each holding member 50 protruding from each through hole 22.

The rotating member 30 is rotated with the cutter body 60 locked to the locking portion 51 of each holding member 50 as described above, and the threaded portion 31 of the rotating member 30 is rotated.
The lifting member 40 is moved to the rear side of the milling device, that is, above the space 23 by the screw holes 41 meshed with the cutter body 60, and the cutter body 60 is moved between the locking portion 51 of each holding member 50 and the second adapter 20. To fix the cutter body 60.

Further, in the milling apparatus of the present invention, when removing the cutter body 60 fixed as described above, the above-mentioned rotating member 30 is rotated in a direction opposite to the direction of attachment, and the threaded portion of the rotating member 30 is removed. The lifting member 40 is moved to the tip side of the milling device, that is, below the space 23 by the screw hole 41 meshed with the 31, and the cutter body 60 is moved downward together with the holding members 50 extended from the lifting member 40. Then, the cutter main body 60 is separated from the second adapter 20, and in this state, the cutter main body 60 is detached from the locking portion 51 of the holding member 50.

As described above, in the milling apparatus of the present invention, the cutter main body 60 is locked by the locking portion 51 of the holding member 50, and only by rotating the rotary member 30, the cutter main body 60 is rotated. The cutter body 60 can be easily fixed and the fixed cutter body 60 can be easily removed.

Further, in the milling apparatus according to the present invention, each holding member 50 protruding through each through hole 21 for the holding member provided in the peripheral portion of the second adapter 20.
Of the cutter body 60 by the second adapter 20
The cutter main body 60 is fixed at a position close to the tip 61 provided on the outer peripheral portion of the distal end of the cutter main body 60, so that the cutter main body 60 is fixed. When the cutting is performed by rotating the main body 60, the vibration of the cutter main body 60 is suppressed, so that it is possible to perform a high-precision cutting process on the object to be cut, and the quality of the surface to be cut is deteriorated. Without
Further, breakage of the chip 61 provided on the cutter body 60 is also prevented.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a milling apparatus according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings.

In the milling apparatus according to this embodiment, as shown in FIG. 1, a ring-shaped first adapter 10 attached to a tip end of a spindle (not shown) of a machine body (not shown). The second adapter 20 is attached along the outer periphery with the screw 11.

Here, in the second adapter 20, as shown in FIGS. 1 and 2, a through hole 21 for a rotating member is provided at the center thereof, and a rotating member 30 is provided on the upper side of the through hole 21. Is provided, and a space 23b for accommodating the elevating member 40 is formed in a cross shape around the space 23a, and each space in the cross-shaped space 23b is formed around the space 23b. A through hole 22 for a holding member through which the holding member 50 is passed is provided.

On the other hand, in the portion where the above-mentioned cross-shaped space portion 23b is not provided, the thickness of the second adapter 20 is increased as shown in FIG. The second adapter is brought into contact with the first adapter 10 and the second
A mounting hole 7 for passing a mounting bolt 70 for mounting the adapter 20 or the first adapter 10 to the spindle.
1 and 72 are provided in the second adapter 20 and the first adapter 10.

Then, as shown in FIG. 4, the screw portion 3 is inserted into the space 23a at the center of the second adapter 20.
1 is accommodated, and the tip surface 32 of the rotating member 30 having the wrench hole 33 is exposed through the through-hole 21 for the rotating member.

As shown in FIG. 5, the elevating member 40 is formed in a cross shape corresponding to the space portion 23b having the cross shape, and the screw portion 31 of the rotating member 30 is formed at the center thereof. And a screw hole 41 that meshes with
A mounting hole 42 for mounting the holding member 50 is provided so as to correspond to each of the through holes 22 for the holding member provided in the cross-shaped space 23b.

With the screw portion 31 of the rotating member 30 screwed into the screw hole 41 of the elevating member 40, the elevating member 40 is housed in a cross-shaped space 23b provided in the second adapter 20, and The holding member 50 provided with the swelling locking portion 51 at the distal end is connected to the second adapter 20.
Through each through hole 22 for the holding member provided in the mounting member 42 provided in the elevating member 40, each holding member 50 is attached to the elevating member 40 by a nut 52,
Each through hole 2 for a holding member provided in the second adapter 20
2, a plurality of holding members 50 provided with locking portions 51 at the distal end are made to protrude toward the distal end.

With the rotating member 30 and the elevating member 40 housed in the spaces 23a and 23b provided in the second adapter 20, the first adapter 10 is screwed into the second adapter 20. As shown in FIG. 6, they are mounted on the main spindle by mounting bolts 70 through the mounting holes 71 and 72 provided in the second adapter 20 and the first adapter 10, respectively.

Here, when the second adapter 20 and the first adapter 10 are mounted on the main spindle by the mounting bolts 70 as described above, except for the space portions 23a and 23b for accommodating the rotating member 30 and the elevating member 40, FIG. 3
As shown in (2), since the thickness of the second adapter 20 is large and it is in contact with the first adapter 10, the second adapter 20 is not deformed even if the mounting bolt 70 is strongly tightened. Can be firmly attached to the spindle.

On the other hand, in the ring-shaped cutter body 60, as shown in FIG. 6, the cutter body 60 is swelled at each holding member 50 so as to correspond to each holding member 50 protruding from the second adapter 20. In addition to providing an insertion hole 62 into which the locking portion 51 is inserted, a guide hole 63 that is narrower than the locking portion 51 of the holding member 50 so as to be continuous with the insertion hole 62 is provided in the circumferential direction, A guide plate for providing a plurality of chips 61 at predetermined intervals along the circumferential direction in the outer peripheral portion of the tip end of the cutter body 60 and discharging chips to the outside so as to contact the rake face 61 a of each chip 61. 64 are provided.

Here, in the milling device of this embodiment, when attaching the cutter body 60 to the second adapter 20 attached to the tip of the spindle, the first adapter 10 and the second adapter 20 In a state where the elevating member 40 accommodated in the space 23 between the above and the lower part of the space 23 is positioned, the elevating member 40 is protruded to the distal end side through each through hole 22 for the holding member in the second adapter 20. Locking part 5 at tip of each holding member 50
1 and the insertion holes 62 provided in the cutter main body 60 are aligned with each other. In this state, the cutter main body 60 is lifted, and the locking portions of the holding members 50 are inserted into the respective insertion holes 62 provided in the cutter main body 60. The cutter 51 is inserted so that each locking portion 51 is guided to the distal end surface side of the cutter body 60 through each insertion hole 62.

Then, with each locking portion 51 being guided to the distal end surface side of the cutter body 60 through each insertion hole 62, the cutter body 60 is slightly rotated, and as shown in FIGS. The holding members 50 are guided to the guide holes 63 that are continuous with the insertion holes 62, and the locking portions 51 provided on the respective holding members 50 are locked around the guide holes 63 to hold the cutter body 60. .

Next, a wrench (not shown) is inserted into a wrench hole 33 provided on the distal end surface 32 of the rotating member 30 through the through hole 21 for the rotating member provided at the center of the second adapter 20. The lifting member 40 by a wrench
The rotating member 30 is rotated in the direction in which the lifting member 40 is lifted, and the lifting member 40 is moved through the screw hole 41 of the lifting member 40 meshed with the screw portion 31 of the rotating member 30 so that the space member 23b
Move up in

With this arrangement, as the elevating member 40 rises, the cutter body 60 locked by the locking portion 51 of each holding member 50 is also lifted together with the holding member 50, and further rotates the rotating member 30. Then, when the lifting member 40 is further moved upward, the cutter body 60 is
In this case, the cutter main body 60 is strongly clamped between the locking portion 51 of each holding member 50 and the second adapter 20, and the cutter main body 60 is firmly fixed.

As described above, in the milling apparatus of this embodiment, the cutter body 60 is
By rotating the rotating member 30 in a state where the cutter body 60 is locked at 1, the cutter body 60 can be easily fixed.

In the milling apparatus of this embodiment, the cutter body 60 is connected to the engaging portion 51 of the holding member 50 and the second adapter 20 at a position close to the outer peripheral portion of the cutter body 60 provided with the tip 61. When the cutter body 60 is rotated and cut by the milling device, the cutter body 6 is fixed.
0 is less likely to vibrate, the cutting accuracy is improved, the quality of the surface to be cut is improved, and the cutter body 6
It is less likely that each of the chips 61 provided at 0 will be damaged.

In the milling apparatus of this embodiment, when the cutter body 60 fixed as described above is removed, the rotating member is passed through the through-hole 21 for the rotating member provided at the center of the second adapter 20. Insert a wrench into a wrench hole 33 provided in the tip surface 32 of
The rotating member 30 is rotated in a direction opposite to the direction in which the cutter body 60 is fixed.

In this way, as the rotating member 30 rotates, the elevating member 40 moves downward in the space 23b through the elevating member 40 screw hole 41 meshed with the screw portion 31 of the rotating member 30. The cutter body 60, which has been held between the locking portion 51 of each holding member 50 and the second adapter 20, moves downward together with the holding member 50 as the elevating member 40 descends, The state is separated from the second adapter 20 and held by the locking portion 51 of the holding member 50.

Then, while the cutter body 60 is held by the locking portion 51 of the holding member 50 in this manner, the cutter body 60 is slightly rotated in a direction opposite to the above-described mounting direction, and each holding member 50 is moved along the guide hole 63. Then, at the position of the insertion hole 62, the locking portion 51 at the tip of each holding member 50 is pulled out through each insertion hole 62, and the cutter body 60 is removed.

In the milling apparatus according to this embodiment, the space 23b for accommodating the lifting member 40 in the second adapter 20 is formed in a cross shape, and the cross-shaped lifting member 40 is used. However, the shape of the space 23 provided in the second adapter 20 and the shape of the elevating member 40 housed in the space 23 are not particularly limited to such.

[0034]

As described in detail above, in the milling apparatus according to the present invention, the lifting and lowering member housed in the space between the first adapter and the second adapter is used for the holding member provided on the second adapter. Each of the holding members is protruded toward the distal end through each of the through holes, and in a state where the cutter body is locked by the locking portion provided at the distal end of each of the holding members, the rotating member is rotated to move the elevating member to the space. , Whereby the cutter body is sandwiched between the locking portion of each holding member and the second adapter, so that the cutter body can be easily attached.

Further, in the milling apparatus according to the present invention, the cutter body is connected to the second adapter by the locking portions of the respective holding members protruding through the respective through holes for the holding members provided in the peripheral portion of the second adapter. The cutter body is fixed at a position near the tip provided on the outer peripheral portion of the tip of the cutter body, and when the cutter body is rotated to perform cutting, the cutter body vibrates. So that cutting can be performed with high accuracy on the workpiece, the quality of the surface to be cut does not deteriorate, and the chip provided on the cutter body is also prevented from being damaged. became.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which a space is formed between a first adapter and a second adapter in a milling apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a second adapter used in the milling device according to the embodiment.

FIG. 3 is a cross-sectional view of a part of the milling device according to the embodiment in which a cross-shaped space is not formed between a first adapter and a second adapter.

FIG. 4 is a schematic sectional view of the milling device in the embodiment.

FIG. 5 is a plan view of a lifting member used in the milling device according to the embodiment.

FIG. 6 is a schematic front view of the milling device in the embodiment.

[Explanation of symbols]

 Reference Signs List 10 first adapter 20 second adapter 21 through hole for rotating member 22 through hole for holding member 23, 23a, 23b space 30 rotating member 31 screw portion 32 tip surface of rotating member 40 elevating member 41 screw hole 50 holding member 51 Locking part 60 Cutter body 61 Tip

Claims (1)

[Claims] A first spindle is provided at the tip of a rotating main spindle.
The adapter 10 is attached, and the second adapter 20 provided with a through-hole 21 for a rotating member at the center and a plurality of through-holes 22 for a holding member at the periphery is provided by the first adapter 20 described above.
The rotating member 30 provided with the screw portion 31 is housed in the center of the space 23 so that the space 23 is formed between the rotating member 30 and the adapter 10. Is held by the second adapter 20, and the distal end face 32 of the rotating member 30 is exposed through the through-hole 21 for the rotating member, and the screw hole 41 that meshes with the screw portion 31 of the rotating member 30 is located at the center. The lifting member 40 provided at the bottom is accommodated in the space 23 so as to be moved up and down by the rotation of the rotating member 30, and the plurality of holding members 50 provided with the locking portions 51 at the distal ends are connected to the above-mentioned holding members 50. A ring-shaped cutter having a plurality of tips 61 attached to the outer periphery of the distal end through the through-hole 21 for the holding member provided in the second adapter 20 from the elevating member 40 so as to protrude toward the distal end side. Holding the body 60 of the member 50
The raising / lowering member 40 is raised by the rotation of the rotating member 30 so that the cutter body 60 is held between the locking portion 51 of the holding member 50 and the second adapter 20. A milling device characterized in that: