JP2003170310A - Indexable milling tool and cartridge used therefor - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To finely adjust the runout of a cutting blade stably and accurately without securing a large width of a tool body. SOLUTION: A cartridge 40 on which a chip 30 having a cutting edge 33 is mounted is inserted into a concave portion 20 formed on the outer peripheral side of one substantially circular side surface 12 of a tool main body 11, and a clamp wedge 44 is used. Attach. A recess 50 for inserting the adjustment wedge 60 is formed in the rear end surface 42 of the cartridge 40 located on the side opposite to the cutting blade 33 in the direction of the axis O. By inserting the adjustment wedge 60 into the recess 50, the cartridge 40 is pressed in the X direction and
3 is adjusted in the X direction. Adjustment wedge 6
0 is inserted into the rear end face 4 of the cartridge 40.
2 at a substantially central portion in the rotation direction T.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a cartridge having a cutting blade detachably attached to a recess formed in a tool body, and an adjusting wedge for adjusting the deflection of the cutting blade of the cartridge. The present invention also relates to a throw-away type rolling tool and a cartridge used for the same.

[0002]

2. Description of the Related Art As a throw-away type milling tool of this type, there is, for example, one shown in an enlarged view of a main part of FIG. 15, which is a substantially disk-shaped tool rotated about an axis. On the outer peripheral side of the one side surface 102 of the main body 101 having a substantially circular shape, one side surface 102 and the outer peripheral surface 10 of the tool main body 101
4 is formed with a plurality of recesses 105 opening to 4,
A cartridge 120 in which a throw-away tip 110 (hereinafter, referred to as a tip) having a cutting edge 111 is mounted in the concave portion 105 has one of the cutting edges 111 of the tip 110 from the other side surface 103 in the axial direction. It is attached by being pressed to the rear side in the tool rotation direction T by the clamp screw 130 so as to protrude in the direction toward the side surface 102 side (X direction in the drawing).

In the throw-away type cutting tool, the tip 11 mounted on the cartridge 120 is used.
The amount of protrusion of the cutting edge 111 of 0 in the X direction, that is,
As an adjusting mechanism for adjusting the runout (front runout) of the cutting blade 111, an adjusting screw 140 whose tip can abut against the rear end face 121 of the cartridge 120 is provided from the other side surface 103 of the tool body 101 in the X direction. Screw it in,
By rotating the adjusting screw 140 and projecting it in the X direction, the cartridge 120 is pushed out in the X direction, and the deflection of the cutting blade 111 can be adjusted.

As another throw-away type rolling tool, for example, there is one shown in an enlarged view of a main part of FIG. 16, which has a substantially disk-shaped tool body rotated about an axis. One side surface 202 and the outer peripheral surface 20 of the tool body 201 are provided on the outer peripheral side of the one side surface 202 which is substantially circular.
4, a plurality of concave portions 205 are formed so as to open at 4,
The cartridge 220 in which the chip 210 having the cutting edge 211 is mounted in the recess 205 is
10 cutting blades 211 are projected in the X direction,
It is attached by being pressed to the rear side in the tool rotation direction T by the clamp wedge 230.

In this throw-away type rolling tool, the recess 240 is formed as a step in the wall surface of the recess 205 facing the X direction as an adjusting mechanism for adjusting the runout (front runout) of the cutting edge 211. Incidentally, the adjustment wedge 2 capable of contacting the rear end surface 221 of the cartridge 220 and the wall surface of the recess 240 facing the X direction in the recess 240.
50 is inserted by adjusting the wedge wedge mounting screw 251 toward the inner diameter side in the radial direction, and the cartridge 220 is pushed out in the X direction according to the screwing amount, and the cutting blade 211
The shake of is adjustable.

[0006]

By the way, when high-precision machining is performed using the above-mentioned throw-away type cutting tool, it is necessary to more strictly control the run-out of the cutting edge. However, in the former throw-away type cutting tool shown in FIG. 15, the cutting blade 111 is adjusted by using the adjusting screw 140.
There is a problem that it is difficult to precisely perform the fine adjustment of the shake of the cutting edge 111 in order to adjust the shake of the cutting edge 111.
On the other hand, in the latter throw-away type cutting tool shown in FIG. 16, since the runout of the cutting edge 211 is adjusted by using the adjustment wedge 250, the fine adjustment can be stably performed. , Such adjustment wedge 250
Is inserted into the recess 240 formed on the tool body 201 side, so that a wide space for forming the recess 240 must be secured in the tool body 201. Therefore, the width of the tool body 201, that is, the distance between the one side surface 202 and the other side surface 203 is inevitably set to be large, and the width of the tool body 201 is set to a sufficient value depending on the type of work. If there is a situation that cannot be secured, there is a possibility that machining with this throw-away type rolling tool may become impossible.

The present invention has been made in view of the above-mentioned problems, and it is a throw-away type milling that can stably and accurately finely adjust the runout of the cutting edge without securing a large width of the tool body. An object is to provide a tool and a cartridge used for the tool.

[0008]

[Means for Solving the Problems] By solving the above problems,
In order to achieve such an object, the rolling tool of the present invention has a recess formed on the outer peripheral side of one side surface of a substantially circular disk-shaped tool body that is rotated around the axis line, and is provided with an axis line. A cartridge having a cutting blade protruding to one side surface in the direction is detachably attached, and the cartridge is pressed to the one side surface by an adjusting wedge to prevent the cutting blade from swinging to the one side surface. In the throw-away type turning tool to be adjusted, the adjustment wedge is
It is characterized in that the cartridge is inserted into a recess formed in a rear end surface of the cartridge, which is located on the opposite side to the cutting edge in the axial direction. In addition, the cartridge of the present invention,
A cutting edge is provided, and a recess for inserting the adjusting wedge is formed on the rear end surface located on the side opposite to the cutting edge. According to the present invention, by adopting the adjusting wedge, the shake of the cutting edge can be stably finely adjusted, and the adjusting wedge is inserted into the recess formed on the cartridge side. Therefore, unlike the conventional case, it is not necessary to secure a wide space for forming the recess for inserting the adjustment wedge in the tool main body, and the width of the tool main body can be made smaller than in the conventional case.

Further, in the present invention, if the recess into which the adjusting wedge is inserted is located substantially at the center of the rear end surface of the cartridge in the rotational direction of the tool body, the pressing force of the adjusting wedge is exerted. Can be reliably and uniformly applied to the cartridge, whereby the deflection of the cutting edge can be adjusted more stably. At this time, in the cartridge, a recess for inserting the adjustment wedge may be formed in a substantially central portion in the thickness direction of the cartridge on the rear end face located on the side opposite to the cutting blade. .

Further, in the present invention, if the recess into which the adjusting wedge is inserted is located at the end of the rear end surface of the cartridge in the rotational direction of the tool body, the rear end surface of the cartridge is This has the advantage that the step of forming the recess can be easily performed. At this time, in the cartridge, the recess for inserting the adjustment wedge may be formed at the end portion in the thickness direction of the cartridge on the rear end surface located on the side opposite to the cutting blade.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION First, the first embodiment of the present invention will be described.
This will be described with reference to FIGS. The throw-away type rolling tool 10 according to the first embodiment has a tool body 11 thereof.
However, it has a substantially disc shape that rotates about the rotation axis O (direction of rotation T), has a mounting hole 11A for mounting on a machine tool near the axis O, and has a substantially circular shape (to be exact, substantially A plurality of recesses 20 are formed on the outer peripheral side of the one side surface 12 forming a donut shape and open to the one side surface 12 and the outer peripheral surface 14 of the tool body 11 at substantially equal intervals in the circumferential direction (rotation direction T). There is.

The recess 20 has a pair of wall surfaces 21 and 22 facing the circumferential direction (rotational direction T), a wall surface 23 facing the radially outer peripheral side, and the other side surface 13 in the axis O direction from the one side surface 12 side. Wall surface 24 facing the direction (X direction in the figure)
Of these, the wall surface 22 facing the rear side in the rotation direction T is a direction from one side surface 12 toward the other side surface 13 in the direction of the axis O (Y direction in the drawing).
An insert portion 25 into which a clamp wedge 44 for clamping the cartridge 40, which will be described later, is inserted is formed in the side portion, while a tool pocket 11 is formed by smoothly cutting out the tool body 11 in the X direction side portion. 26 is formed. Further, the wall surface 24 of the recess 20 facing the X direction has a through hole 27 formed so as to penetrate from the other side surface 13.
The positioning screw 28 is screwed into the through hole 27 so that the tip of the positioning screw 28 protrudes from the wall surface 24 in the X direction by a predetermined amount.

Then, for each such recess 20,
The cartridge 40 having a substantially rectangular parallelepiped shape is provided with the chip mounting seat 4
With the surface 41 on which 1A is formed facing the front side in the rotational direction T, it is housed in close contact with the wall surface 23 facing the radially outer side and the wall surface 21 facing the front side in the rotational direction T. Insert portion 25 formed on the wall surface 22 facing the T rear side
The clamp wedge 44 to the clamp wedge mounting screw 45
By being screwed in toward the inner peripheral side in the radial direction, the cartridge 40 is pressed rearward in the rotational direction T and mounted in the recess 20.

In the tip mounting seat 41A, the tip 3 having a cutting edge 33 is provided via a sheet 35 having a substantially rectangular flat plate shape.
No. 0 is mounted by the chip clamp screw 34. In the chip 30, the chip body 31 is formed in a substantially rectangular flat plate shape made of a hard material such as cemented carbide and the upper surface serving as a rake surface. A total of four cutting edges 33 are formed on the ridgeline of each corner portion of 32.

When the chip 30 is mounted on the chip mounting seat 41A of the cartridge 40, the chip body 3
The upper surface 32 of No. 1 is directed toward the front side in the rotation direction T and is inclined toward the rear side in the rotation direction T as it goes toward the Y direction side, and one cutting edge 33 is provided on one side of the tool body 11. It is in a state of protruding from the side surface 12 toward the X direction side by a predetermined amount.

In the present embodiment, the rear end surface 42 of the cartridge 40 which faces the Y direction, that is,
A portion of the rear end surface 42 located on the opposite side of the cutting edge 33 in the direction of the axis O in the radial outer peripheral side is recessed one step in the X direction from the rear end surface 42, and the rear end surface 42 and the surface 43 facing the radial outer peripheral side. A recess 50 for inserting the adjusting wedge 60 is formed so as to open.

The recess 50 is composed of a wall surface 51 facing the Y direction, a pair of wall surfaces 52 and 53 facing the circumferential direction (rotational direction T), and a wall surface 54 facing the radially outer side, and the cartridge 40. On the rear end face 42, the cartridge 40 is positioned in the thickness direction, that is, in the approximate center of the rotation direction T. In such a recess 50, an adjusting wedge 60 is provided with a double screw adjusting wedge mounting screw 63.
Is screwed toward the inner peripheral side in the radial direction, and the surface 61 of the adjusting wedge 60 facing the X direction is the Y of the recess 50.
A surface 62 that is in contact with the surface 51 facing the direction and is inclined so that the distance from the surface 61 of the adjustment wedge 60 toward the radially inner side becomes smaller toward the Y direction is a surface facing the X direction of the recess 20. When the cartridge 40 comes into contact with the
It is pressed in the direction.

When mounting the cartridge 40 in the recess 20, first, the cartridge 40 having the chip 30 mounted therein is inserted into the recess 20 of the tool body 11 until the rear end surface 42 contacts the tip of the positioning screw 28. After that, the cartridge 40 is mounted by being pressed rearward in the rotational direction T by the clamp wedge 44. Then, the adjusting wedge 60 is screwed into the recess 50 formed in the rear end surface 42 of the cartridge 40 with the adjusting wedge mounting screw 63, and the cartridge 40 is pushed out in the X direction according to the screwing amount. By doing so, the deflection of the cutting edge 33 is adjusted.

Further, in the first embodiment, a hole 70 penetrating from one side surface 12 to the other side surface 13 is formed on the radially inner side of the recess 20 formed in the tool body 11. At the same time, a cartridge 73 having a chamfering tip 71 mounted therein is housed and attached in the hole 70, and one cutting edge 7 of the chamfering tip 71 is attached.
2 is projected from one side surface 12 in the X direction by a predetermined amount.

As shown in FIG. 2, the throw-away type rolling tool 10 as described above is rotated about the axis O while the cutting edge 33 is projected from the one side surface 12 in the X direction by a predetermined amount. While the side surface of the work W is processed, the corners of the work W are chamfered by the cutting edge 72 of the chamfering tip 71.

According to the throw-away type rolling tool 10 having such a structure, the tip 30 is adjusted for the deflection of the cutting edge 33 of the tip 30 which is projected from the one side surface 12 in the X direction by a predetermined amount. Since the adjustment wedge 60 presses the rear end surface 42 of the mounted cartridge 40 in the X direction, the shake of the cutting blade 33 can be stably and accurately finely adjusted.

Further, since the recess 50 for inserting the adjusting wedge 60 is formed in the rear end surface 42 of the cartridge 40 mounted in the recess 20 of the tool body 11, it is adjusted as a deflection adjusting mechanism of the cutting blade. Compared with a throw-away type rolling tool that uses wedges, it is not necessary to secure a large space for forming a recess for inserting an adjustment wedge in the tool body 11, and the width of the tool body 11 is accordingly increased. , That is, one side surface 12 and the other side surface 13
The distance between and can be set small. Therefore, even if the width of the tool body 11 has to be set small due to the work W, it is possible to reduce the possibility that the machining cannot be performed.

Further, since the recess 50 into which the adjusting wedge 60 is inserted is located in the rear end surface 42 of the cartridge 40 in the substantially central portion in the rotational direction T, the adjusting wedge 60 is moved to the rear of the cartridge 40. The pressing force applied to the end surface 42 can be made even and reliable, and the deflection of the cutting edge 33 can be adjusted more stably.

Next, a second embodiment of the present invention will be described with reference to FIGS. 8 to 14. The same parts as those of the above-mentioned first embodiment are designated by the same reference numerals and the description thereof will be omitted. . First of the throw-away type cutting tool 10 according to the second embodiment
The main difference from the embodiment is the cartridge 40.
In the portion on the X direction side of the surface 46 facing the rotation direction T rear side of
On this rear end surface 42, the cartridge 47 has a flange 47 projecting rearward in the rotational direction T from this surface 46 and a recess 50 formed on the rear end surface 42 of the cartridge 40. A wall surface 51 located at the thickness direction of 40, that is, an end portion located on the rear side in the rotation direction T and facing the Y direction, a wall surface 53 facing the rear side in the rotation direction T, and a radial outer peripheral side. The point is that it is composed of the wall surface 54.

In mounting the cartridge 40 in the recess 20 in the second embodiment as described above, first, the cartridge 40 on which the chip 30 is mounted is mounted on the tool body 11.
After the flange portion 47 for positioning the cartridge 40 is inserted into the recess 20 of the tool body 11 until it comes into contact with the one side surface 12 of the tool body 11, the cartridge wedge 40 is pressed to attach the cartridge 40 rearward in the rotational direction T. . Then, the recess 5 formed in the rear end surface 42 of the cartridge 40.
For 0, adjust wedge 60 to adjust wedge mounting screw 63
The cartridge 40 is screwed in and inserted, and the cartridge 40 is pushed out in the X direction in accordance with the screwing amount to adjust the deflection of the cutting blade 33.

According to the throw-away type rolling tool 10 having such a structure, the cutting edge 3 can be formed without securing a large width of the tool body 10 as in the first embodiment described above.
In addition to the effect that the shake of 3 can be finely adjusted stably and accurately, the recess 50 into which the adjustment wedge 60 is inserted is
Since it is located at the end of the rear end surface 42 of the cartridge 40 in the rotational direction T, there is an effect that the step of forming the recess 50 in the rear end surface 42 of the cartridge 40 can be easily performed.

[0027]

As described above, according to the present invention, by adopting the adjusting wedge as the shake adjusting mechanism, the shake of the cutting edge can be stably finely adjusted, and the adjusting wedge is provided on the cartridge side. Since it is inserted in the formed recess, it is not necessary to secure a wide space for forming the recess for inserting the adjustment wedge in the tool body as in the past, and the width of the tool body can be made wider than before. Can be made smaller, and machining of various shapes of works can be enabled.

[Brief description of drawings]

FIG. 1 is a plan view of a throw-away type rolling tool according to a first embodiment of the present invention.

FIG. 2 is a virtual cross-sectional view along the axial direction of the throw-away type rolling cutting tool according to the first embodiment of the present invention.

FIG. 3 is a view on arrow A in FIG.

FIG. 4 is a plan view of a cartridge used in the throw-away type rolling tool according to the first embodiment of the present invention.

5 is a view in the direction of arrow B in FIG.

FIG. 6 is a view in the direction of arrow C in FIG.

FIG. 7 is a view on arrow D in FIG.

FIG. 8 is a plan view of a throw-away rolling tool according to a second embodiment of the present invention.

FIG. 9 is a virtual cross-sectional view along the axial direction of a throw-away type rolling cutting tool according to a second embodiment of the present invention.

10 is a view on arrow E in FIG. 7. FIG.

FIG. 11 is a plan view of a cartridge used in a throw-away type rolling tool according to a second embodiment of the present invention.

FIG. 12 is a view on arrow F in FIG.

13 is a view in the direction of arrow G in FIG.

FIG. 14 is a view in the direction of arrow H in FIG.

FIG. 15 is an enlarged view of a main part of a conventional throw-away type rolling tool.

FIG. 16 is an enlarged view of a main part of a conventional throw-away type rolling tool.

[Explanation of symbols]

10 Throw-away type rolling tool 11 Tool body 12 One side surface 20 Recess 30 Tip 33 Cutting blade 40 Cartridge 42 Rear end surface 50 Recess 60 Adjusting wedge O Axis T Rotating direction X From one side surface to one side surface side Direction from Y side direction from one side to the other side

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroo Torii             1528, Nakashinden, Yokoi, Kobe-cho, Anpachi-gun, Gifu Prefecture             Address Mitsubishi Materials Corporation Gifu Factory             Within F term (reference) 3C022 HH01 HH06 HH12 HH18

Claims (6)

[Claims] 1. A cutting blade protruding to one side surface side in an axial direction is provided in a recess formed on the outer peripheral side of one side surface forming a substantially circular shape of a substantially disk-shaped tool body rotated about an axis line. In a throw-away type cutting tool in which a cartridge is removably attached and the adjustment wedge pushes the cartridge to the one side surface side to adjust the runout of the cutting blade to the one side surface side, the adjustment wedge Is inserted into a recess formed in a rear end surface of the cartridge, which is located on the opposite side of the cutting edge from the axial direction, in the throw-away type rolling tool. 2. The throw-away type milling tool according to claim 1, wherein the recess into which the adjustment wedge is inserted is located at a substantially central portion of the rear end surface of the cartridge in the rotational direction of the tool body. Throw-away type milling tool characterized by this. 3. The throw-away type milling tool according to claim 1, wherein the recess into which the adjustment wedge is inserted is located at the end of the cartridge body in the rotation direction on the rear end face of the cartridge. A throwaway type cutting tool characterized by. 4. A cartridge used in the throw-away type rolling tool according to claim 1, further comprising a cutting edge, and a rear end surface located on the opposite side of the cutting edge. A cartridge characterized in that a recess for inserting the adjusting wedge is formed. 5. The cartridge according to claim 4, wherein a recess for inserting the adjustment wedge is formed in a substantially central portion in a thickness direction of the cartridge on a rear end surface located on the side opposite to the cutting blade. Cartridge characterized by having. 6. The cartridge according to claim 4, wherein a recess for inserting the adjustment wedge is formed at an end portion in the thickness direction of the cartridge on a rear end surface located on the side opposite to the cutting blade. Cartridge characterized in that