JPH1110434A - Throw-away type rotary cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely fix a chip by a wedge member to prevent the chip from being moved to the outside or shifting by centrifugal force by forming saw teeth engaged with each other on a setting surface of a throw-away chip and a chip fitting seat of a fitting groove. SOLUTION: With a chip 22 fixed to each fitting groove 19, a tool main body 18 is rotated at high speed to perform intermittent cutting, whereby even if strong centrifugal force works on the ship 22, the chip 22 is pressed by a wedge member 29 so that saw teeth are engaged with each other at the setting surface 23 and the chip fitting surface 20. Accordingly, the chip 22 can be surely inhibited from being moved in the working direction of centrifugal force. Even in the case where a cutting blade 27 of the throw-away chip 22 wears away and is again polished, the engagement position to the saw teeth 24, 28 and the projecting amount of the chip 22 by an adjust screw are adjusted. Thus, run-out of the outer peripheral cutting blade 27a and the front cutting blade is adjusted to reuse the chip, so that the cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling tool such as a face mill having a throw-away tip mounted thereon, and more particularly to a structure for mounting a throw-away tip and a cartridge.

[0002]

2. Description of the Related Art When a soft material such as an aluminum alloy is rotationally cut using a throw-away type face mill or the like, the rotation speed exceeds several thousand to 10,000 rpm in order to realize good machining accuracy and high productivity. Cutting is performed at such a high speed rotation. FIG. 13 shows an example of a structure for mounting a throwaway tip in such a throwaway type face milling machine. That is, FIG.
A mounting groove 2 for a chip is provided in a circumferential direction on an outer peripheral portion of a tip end of a tool body 1 of the face mill shown in FIG. The mounting groove 2 has two opposing side walls tapered so that the cross-sectional area gradually decreases from the opening toward the depth direction, that is, radially inward of the tool body 1. One of the side walls is formed with a concave chip mounting seat 3 facing the rotation direction of the mounting groove 2, and a parallel plate-like throw-away chip 4 having a cutting edge is seated thereon. A substantially tapered wedge member 5 having a small cross-sectional area on the distal end side is inserted into the mounting groove 2 so as to press the rake face 4a of the chip 4 with one side surface.
Reverse screw 7 is screwed. When the first screw 7a of the reverse screw 7 is rotated while being screwed into the screw hole 8 of the tool body 1, the wedge member 5 is screwed into the second screw 7b and pushed into the mounting groove 2, and the chip 4 is inserted. It is pressed and fixed.

However, in such a tip mounting structure, when the tool main body is rotated at a high speed, a strong centrifugal force acts on the throw-away tip 4, and the tip 4 moves outward even if it does not protrude, resulting in displacement. And the processing accuracy may be reduced. Japanese Utility Model Application Laid-Open No. 62-68712 proposes a face milling machine which solves such a problem. As shown in FIGS. 14 and 15, the front milling tool is pressed by a wedge member 13 tightened by a clamp bolt 12 against a parallel-plate-shaped indexable insert 11 inserted into a mounting groove 10 of a tool body 9 of the front milling cutter. Fixed. A pin 14 is implanted on the side wall 10a of the mounting groove 10 where the chip 11 is pressed, and the chip 1
A concave portion 15 with which the pin 14 engages is formed on the bottom surface of the device 1. Therefore, when the tool body 9 is rotated at a high speed, the pin 1
1 is prevented from jumping out.

[0004]

However, in the structure for mounting the throw-away tip 11, since the pin 14 protrudes from the wall surface of the mounting groove 10, the wedge member 13 is required when attaching and detaching the throw-away tip 11. Between the insert and the side wall 10a of the mounting groove 10
It is necessary to set a gap exceeding the sum of the thickness of the pin 1 and the amount of protrusion of the pin 14. However, since the inclination angle of the side surface of the wedge member 13 with respect to the wall surface of the mounting groove 10 is reduced to ensure the pressing strength of the chip 11 by the wedge member 13, when the depth of the mounting groove 10 is increased, There is a disadvantage that the amount of advance and retreat movement of the wedge member 13 is large. If such an operation is performed for all of the plurality of mounting grooves 10, there is a problem that the operation time is significantly increased.

The present invention has been made in view of such circumstances, and provides a throw-away type milling tool which can surely prevent the movement and displacement of the throw-away tip during rotation and can easily attach and detach the throw-away tip. The purpose is to: Another object of the present invention is to provide a throw-away type milling tool which can surely prevent the movement and displacement of the cartridge during rotation and can easily perform the attachment / detachment operation of the cartridge.

[0006]

According to the present invention, there is provided a tip mounting structure for a throw-away type milling tool, in which a throw-away tip is pressed by a wedge member into a mounting groove formed in a tool body which rotates about an axis. In a throw-away type milling tool which is mounted by mounting, a sawtooth engaging with each other is formed on a seating surface of a throw-away tip and a tip mounting seat of a mounting groove.
The indexable insert pressed and fixed in the mounting groove by a wedge member is fixed to the chip mounting seat by saw teeth engaging with each other, so that even if centrifugal force acts during rotation of the tool body, the chip moves. Rotation cutting can be performed with high precision without causing any slippage or displacement. In addition, when the cutting edge of the tip is worn, the cutting edge is polished and the position of engagement with the saw tooth of the tip mounting seat is shifted radially outward when mounted on the tip mounting seat, thereby accurately positioning and fixing the tip. can do. The saw tooth in the present invention is not limited to the V-shaped cross-section, but may be a U-shaped cross-section, or any other shape that engages with each other to prevent the tip from shifting or moving.

On the side of the throw-away tip,
An adjusting member for projecting the throw-away tip in the direction in which the saw teeth extend may be provided. When the indexable insert cutting edge is worn and polished and reused, the total length of the insert becomes shorter than the original one, but among the cutting edges, the engagement position of the saw tooth is shifted for the outer peripheral cutting edge. Thus, the protrusion amount can be adjusted, and the protrusion amount can be adjusted by operating the adjusting member for the front cutting blade. Therefore, the runout of the cutting blade can be adjusted, and the cost is low.

A throw-away type milling tool according to the present invention is a throw-in type rolling tool in which a cartridge having a throw-away tip attached thereto is mounted by being pressed by a wedge member into a mounting groove formed in a tool body which rotates about an axis. In the away type milling tool, the seating surface of the cartridge and the mounting seat of the mounting groove are formed with saw teeth that engage with each other. Even if a centrifugal force acts during the rotation of the tool body, the cartridge does not move or shift, and the rotary cutting can be performed with high precision. Moreover,
If the cutting edge of the chip becomes worn, the chip is accurately positioned and fixed by grinding the cutting edge and shifting the engagement position with the saw tooth of the mounting seat radially outward when mounting the cartridge on the mounting seat. it can.

Further, an adjustment member for adjusting the amount of protrusion of the cartridge in the direction in which the saw teeth extend may be provided on the side surface of the cartridge of the tool body. When the indexable insert cutting edge is worn and polished and reused, the total length of the insert becomes shorter than the original one, but among the cutting edges, the engagement position of the saw tooth is shifted for the outer peripheral cutting edge. Thus, the protrusion amount can be adjusted, and for the front cutting blade, the protrusion amount can be adjusted by operating the adjusting member, so that the run-out of the cutting blade can be adjusted.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a view showing a partial cross section of a face mill according to an embodiment, FIG. 2 is a front end view of the face mill shown in FIG. 1, and FIG. 3 is an axis of a tool body showing a mounting structure of a throw-away tip in a mounting groove. 4 is a partial side view of the tip mounting structure shown in FIG. 3 as viewed from the outer peripheral direction of the tool body, FIG. 5 is a plan view of the throwaway tip, and FIG. 6 is a throwaway shown in FIG. FIG. 7 is a perspective view of the chip viewed from the bottom direction, and FIG.
It is a line sectional view. In FIGS. 1 and 2, a plurality of mounting grooves 19 are provided at predetermined intervals in the circumferential direction on an outer peripheral portion of a tip end of a tool main body 18 that rotates about the axis L of the front milling cutter 17. 3 and 4, the mounting groove 19 extends from the opening 19a on the outer peripheral side as viewed in the radial direction of the tool body 18 to the bottom 19.
b, two wall surfaces 19c, 1
9d is formed in a tapered shape in which the interval gradually increases, and a concave portion is formed on one wall surface 19c facing the rotation direction of the mounting groove 19 to form a chip mounting seat 20. Further, a tip pocket 21 is provided at the front in the rotation direction following the mounting groove 19 on the outer peripheral surface of the tool body 18.

As shown in FIGS. 5 and 6, the throw-away tip 22 mounted on the tip mounting seat 20 has a substantially polygonal plate shape (pentagonal plate shape in the drawing).
The seating surface 23, which is seated on the bottom surface 20a of the
And sawtooth teeth 24 having a linear shape are arranged.
When the tip 22 is mounted on the tip mounting seat 20, the tip 22 extends in a direction intersecting the radial direction of the tool body 18 and is formed in parallel. In the chip 22, the upper surface facing the seating surface 23 is a rake face 25, and the corner of the tip is notched, and a cutting edge chip 26 having, for example, a substantially triangular plate shape is brazed. The cutting edge tip 26 is made of, for example, CBN or Diamond Compax, and its ridge line is a cutting edge 27. The cutting edge 27 is located on the outer peripheral side of the tool body 18.
a, the front cutting edge 27b is located on the front end side. Moreover, a plurality of saw teeth 28 having the same cross-sectional shape as the saw teeth 24 of the tip 22 are also arranged on the bottom surface 20a of the tip mounting seat 20 on which the seating surface 23 of the throw-away tip 22 is seated.
The saw teeth 24 of the tip 22 are engaged with each other. The positioning side surface 22a of the throw-away tip 22 can be seated on the side wall 20b of the tip mounting seat 20.

A wedge member 29 for fixing the chip 22 in the mounting groove 19 is provided between the opening 19 a of the mounting groove 19 and the bottom surface 19.
The distance between the two side surfaces 29a and 29b facing each other in the direction b, that is, the thickness, gradually increases, and the cross-sectional area increases. The upper surface 29c of the wedge member 29 has a concave curved surface shape so as to form a part of the chip pocket 21,
The screw hole 30 penetrates substantially the center of the upper surface 29c and the lower surface 29d.
Are formed. In this case, the side surface 29a and the screw hole 30
Are preferably parallel. The locking bolt 32 screwed into the screw hole 30 of the wedge member 29 has a locking portion 33 on the tip end side, the diameter of which is increased via a relatively small diameter shaft portion 32a. 7, a substantially keyhole-shaped hole 34 having a large diameter portion 34a and a small diameter portion 34b is formed in the bottom surface 19b of the mounting groove 19, and the shaft portion 32a of the locking bolt 32 is provided in the small diameter portion 34a of the hole 34. The locking portion 33 is located in the engagement groove 35.
The locking portion 33 has an outer diameter slightly smaller than the inner diameter of the large diameter portion 34a and larger than the inner diameter of the small diameter portion 34b. for that reason,
The locking bolt 32 is rotatable in the mounting groove 19, but the axial movement of the locking bolt 32 is restricted to a small extent within the gap between the wall surface of the engaging groove 35 and the locking portion 33.

For this reason, the locking bolt 32 is connected to the wedge member 2.
9 is screwed into the screw hole 30, the locking portion 33 is inserted from the large diameter portion 34 a of the hole 34, moved to the position of the small diameter portion 34 b, and the locking bolt 32 is tightened. Since the movement is restricted, the wedge member 29 moves in the direction of the opening 19a of the mounting groove 19 to press and fix the chip 22. The side surface 29a of the wedge member 29 facing rearward in the rotation direction abuts against the wall surface 19d of the mounting groove 19, and the other side surface 29b (pressing surface) presses the rake face 25 of the chip 22. Also, in FIG.
An opening 38 through which the head 37a of the adjusting screw 37 is exposed is connected to the mounting groove 19 at the distal end portion of the outer peripheral surface. The adjusting screw 37 (adjusting member) is disposed in a threaded state in the axial direction of the tool body 18, and the head 37 a is located on the distal end side, and presses the side surface 22 b of the throw-away tip 22. The adjusting screw 37 is rotated by rotating the head 37a with a wrench hole 37b formed in the head 37a.
7a is advanced and retracted, and the throw-away tip 22 is pushed toward the tip end surface side of the tool main body 18 so that the protrusion amount of the front cutting edge 27b can be adjusted.

Since the face mill 17 according to the present embodiment is configured as described above, when the indexable tip 22 is mounted in the mounting groove 19 of the tool body 18, first, the face mill 17 is engaged with the screw hole 30 of the wedge member 29. The bolt 32 is screwed in, and the locking portion 33 is attached to the large-diameter portion 3 of the hole 34 in the mounting groove bottom surface 19b.
4a, the wedge member 29 is inserted into the small-diameter portion 34b until it comes into contact with the bottom surface 19b in the mounting groove 19. Then, the throw-away tip 22 is inserted into the tip mounting seat 20 of the mounting groove 19, the positioning side surface 22a is brought into contact with the positioning side wall 20b and positioned, and the saw tooth 24 of the seating surface 23 is sawtooth of the chip mounting seat bottom surface 20a. 28 and seated. In this state, when the locking bolt 32 is tightened, the locking portion 33 of the locking bolt 32 is restricted from moving forward and backward in the locking groove 35, so that the wedge member 29 is moved to the opening of the mounting groove 19. The chip 22 is relatively moved in the direction 19a, and the rake face 25 of the chip 22 is pressed by the side wall 29b to fix the chip 22 tightly. In the mounted state, the outer peripheral cutting edge 27a of the throw-away tip 22 protrudes outward from the outer peripheral surface of the tool main body 18, and the front cutting edge 27b protrudes from the distal end surface of the tool main body 18 to the distal end side.

In this manner, the tip 22 is inserted into each mounting groove 19.
Even if a strong centrifugal force acts on the tip 22 by rotating the tool body 18 at high speed and performing intermittent cutting in a state where the tip 22 is fixed, the tip 22 is pressed by the wedge member 29 and the seating surface 2.
Since the saw teeth 24 and 28 are engaged with each other at the tip 3 and the tip mounting seat 20, the movement of the tip 22 in the direction (radial direction) where centrifugal force acts is reliably prevented. Moreover, the opening 19a of the mounting groove 19 is narrower in the rotation direction than the bottom surface 19b, and the wedge member 29 is similarly formed on the upper surface 29 more than the bottom surface 29d.
c is narrower, and the opening 19a of the mounting groove 19 is smaller.
Is smaller than the sum of the positioning side surface 22a of the chip 22 and the bottom surface 29d of the wedge member 29. Therefore, from this point, the chip 22 does not move to the outer peripheral side due to the centrifugal force and does not shift. Next, when the throw-away tip 22 is to be removed, the locking bolt 32 is rotated in the reverse direction, and the wedge member 29 is pushed into the wedge member 2.
Since the 9 moves to the bottom surface 19 b side in the mounting groove 19, the pressing of the chip 22 by the wedge member 29 is relaxed, and the chip 22 can be removed.

Further, the cutting blade 2 of the throw-away tip 22
In the case where 7 is worn, if it is polished and reused, the overall length of the throw-away tip 22 is shortened, so that the positioning side surface 22a cannot abut against the side wall 20b of the tip mounting seat 20 as described above. In such a case,
As for the outer peripheral cutting edge 27a of the cutting blade 27, the run-out of the outer peripheral cutting blade 27a is adjusted by shifting the saw tooth 24 of the seating surface 23 toward the outer peripheral side with the saw tooth 28 of the chip mounting seat bottom surface 20a. For the front cutting edge 27b, the adjusting screw 3
The wrench is inserted into the wrench hole 37b of the head 37a of the No. 7 and rotated to make the adjustment screw 37 protrude toward the tip end of the tool body 18. Then, the indexable insert 22 is pushed to the distal end side while being guided by the saw teeth 24 and 28, and the protrusion amount of the front cutting edge 27b can be adjusted. By adjusting the position of the indexable insert 22 in this manner, the runout of the outer peripheral cutting edge 27a and the front cutting edge 27b can be adjusted.

As described above, according to the present embodiment, the chip 22 is pressed by the wedge member 29 and securely pressed and fixed without the chip 22 being moved outward by centrifugal force or being displaced. In addition, the protrusions such as pins are not used for fixing the chip 22, and the chip 22 can be easily and easily attached and detached using the relatively narrow mounting groove 19 having a small depth. In addition, even when the cutting edge 27 of the throw-away tip 22 is worn and polished again, by adjusting the engagement position of the saw teeth 24 and 28 and the amount of protrusion of the tip 22 by the adjusting screw 37, the outer peripheral cutting edge 27a
In addition, the deflection of the front cutting edge 27b can be adjusted and reused, and the cost can be reduced.

FIG. 8 shows a modification of the above embodiment, and the same parts as those in the above embodiment will be described using the same reference numerals. In this mounting structure, two wall surfaces 19c 'and 19d' that face each other in the rotation direction of the mounting groove 19 'are formed in a tapered shape such that the distance gradually increases from the bottom surface 19b' toward the opening 19a '. Therefore, the wedge member 29 ′ also has a side surface 29 b ′ pressing the rake face 25 of the throw-away tip 22 and a side surface 29 abutting against the wall surface 19 d ′.
a 'is tapered so that the interval gradually increases from the bottom surface 29d' to the upper surface 29c '. The wedge member 29 'is screwed with the same reverse screw 7 as in the prior art. Even with such a configuration, the indexable insert 22 can be reliably pressed and fixed.

The bolts to be screwed into the wedge member 29 need not be the locking bolts 32 or the reverse screws 7, but may be rod-like bolts 40 which can contact the bottom surface 19b of the mounting groove 19 as shown in FIG. . Further, the throw-away tip 22 is not limited to the brazing type, but may be another type.

FIGS. 10 to 12 show a second embodiment of the present invention. The same or similar members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. I do. 10 is a view of the mounting structure of the cartridge viewed from the outer peripheral side of the tool body, FIG. 11 is a cross-sectional view taken along the line BB of FIG.
FIG. 12 is a sectional view taken along line CC of FIG. In FIG. 10, a throw-away tip 40 having an outer peripheral cutting edge 27a and a front cutting edge 27b is a cartridge 41 having a substantially rectangular parallelepiped shape.
It is attached to the corner of the tip of the (supporter) with screws or the like. The cartridge 41 is attached to the mounting groove 1 together with the wedge member 29.
9, the surface 41 a of the cartridge 41 on which the chip 40 is mounted is pressed by the side surface 29 b of the wedge member 29 which is detachably attached with, for example, a rod-shaped bolt 40, and the seating surface 41 b facing the surface 41 a is attached to the mounting groove 19. Is pressed against the bottom surface 42a of the mounting seat 42 formed on the wall surface 19c that faces the rotation direction of FIG.

In the radial cross section of the tool main body 18 shown in FIG.
(Bottom surface 42a of mounting seat 42) and 19d gradually decrease in width from bottom surface 19b toward opening 19a. The wedge member 29 also has two side surfaces 29a and 29b facing in the rotation direction, the width of which gradually decreases from the bottom surface 19b toward the opening 19a. The tool body 1 is provided on the seating surface 41b of the cartridge 41.
For example, a plurality of saw teeth 43 having a substantially V-shaped cross section are provided in a direction intersecting with the radial direction of FIG. 8 (see FIG. 11). A plurality of saw teeth 44 having a substantially V-shaped cross section are also formed on the bottom surface 42 a of the mounting seat 42 in a direction intersecting the radial direction of the tool body 18, and the saw tooth 43 of the cartridge 41 and the saw tooth 4 of the mounting seat 42 are formed.
4 are engaged with each other.

In FIG. 10 and FIG.
9 and the cartridge 4
An adjustment screw 45 as an adjustment member is provided between the tool body 18 and the side surface 41c (facing the tip end surface of the tool body 18).
In the radial direction, and can advance and retreat along the wall surface 19e. The side surface 41c of the cartridge 41 is the tool body 1
8 is formed so as to be inclined so as to approach the adjustment screw 45 as it proceeds inward in the radial direction of the tool 8. It protrudes to the side. In this case, the projecting direction of the cartridge 41 is the extending direction of the sawtooth 43, 44, so that the engaging
3, 44 do not hinder the movement of the cartridge 41,
Guided.

Therefore, even in this embodiment, even if a strong centrifugal force acts on the cartridge 41 by rotating the tool body 18 at high speed and performing intermittent cutting, the
Is pressed by the wedge member 29 so that the seating surface 41b and the mounting seat 4
Since the saw teeth 43 and 44 are engaged with each other, the movement of the cartridge 41 in the direction (radial direction) where centrifugal force acts is reliably prevented. In addition, when attaching and detaching the cartridge 41, the cartridge 41 may be pulled out to the distal end side where the saw teeth 43 and 44 extend in a state where the bolt 39 is loosened. for that reason,
The cartridge 41 can be easily and easily attached / detached using the relatively narrow mounting groove 19 having a small depth. Moreover, even when the cutting blades 27a and 27b of the throw-away tip 40 are worn and polished again, by adjusting the engagement position of the saw teeth 43 and 44 and the protrusion amount of the cartridge 41 and the tip 40 by the adjusting screw 45, The run-out of the outer peripheral cutting edge 27a and the front cutting edge 27b can be adjusted and reused, and the cost can be reduced.

In the chip mounting structure according to each embodiment, only one of the side surfaces 29a of the wedge member 29 facing the side surface 29b of pressing the chip 22 and the cartridge 41 is inclined (with respect to the bottom surface 29d). Or both may be inclined surfaces. In addition, chip 2
2 and the saw teeth 2 of the seating surfaces 23 and 41b of the cartridge 41
4, 43 and chip mounting seat bottom surface 20a and mounting seat bottom surface 42a
In the embodiment, the saw teeth 28 and 44 have substantially V-shaped (triangular) irregularities in cross section, but may have irregular shapes such as substantially square shapes in cross section. The present invention can be applied not only to the face milling but also to various throw-away type rolling tools such as an end mill.

[0025]

As described above, in the insert mounting structure for a throw-away type rolling tool according to the present invention, saw teeth are formed on the seating surface of the indexable insert and the chip mounting seat of the mounting groove. Therefore, the chip can be reliably fixed by pressing the chip with the wedge member without moving the chip outward due to centrifugal force or causing a position shift.
Further, in the insert mounting structure of the throw-away type milling tool according to the present invention, the adjusting member for projecting the throw-away tip in the direction in which the saw tooth extends is brought into contact with the side surface of the throw-away insert. Even when the cutting edge of the indexable insert is worn out and polished again, by adjusting the engagement position of the saw tooth and the amount of protrusion of the insert by the adjusting member, the runout of the outer peripheral cutting edge and the front cutting edge is adjusted. The chip can be precisely mounted and fixed for reuse, and the cost is low.

Further, in the throw-away type rolling tool according to the present invention, since the serrations engaging with each other are formed on the seating surface of the cartridge and the mounting seat of the mounting groove, the cartridge may be moved by centrifugal force. Rotation cutting can be performed with high precision without causing positional deviation. Further, since an adjusting member for adjusting the amount of protrusion of the cartridge in the direction in which the saw teeth extend is provided on the side surface of the cartridge of the tool main body, when the cutting blade is worn, it is polished and reused. Is
For the outer peripheral cutting edge, the protruding amount can be adjusted by shifting the engagement position of the saw tooth, and for the front cutting edge, the protruding amount can be adjusted by operating the adjusting member, so that the runout of the cutting blade can be adjusted and the cost is low. is there.

[Brief description of the drawings]

FIG. 1 is a side view showing a partial cross section of a face milling machine according to an embodiment of the present invention.

FIG. 2 is a front view of the front milling machine shown in FIG.

FIG. 3 shows a mounting structure of the indexable insert in the mounting groove, in a direction (radial direction) orthogonal to the axis of the tool body.
It is principal part sectional drawing of.

4 is a partial side view of the tip mounting structure shown in FIG. 3 as viewed from an outer peripheral direction of a tool main body.

FIG. 5 is a plan view of the throw-away tip according to the embodiment.

FIG. 6 is a perspective view of the throw-away tip shown in FIG. 5 as viewed from a bottom surface direction.

FIG. 7 is a cross-sectional view taken along line AA of the chip mounting structure in FIG. 3;

FIG. 8 is a cross-sectional view of a main part in a direction (radial direction) orthogonal to the axis of the tool main body, showing a modification of the tip mounting structure according to the embodiment.

FIG. 9 is a fragmentary cross-sectional view showing another modified example of the chip mounting structure according to the embodiment.

FIG. 10 is a view of a cartridge mounting structure according to a second embodiment of the present invention as viewed from the outer peripheral side of a tool main body.

FIG. 11 is a sectional view taken along line BB of FIG. 10;

FIG. 12 is a sectional view taken along line CC of FIG. 10;

FIG. 13 is a sectional view of a tip mounting structure in a conventional face milling machine.

FIG. 14 is a perspective view of a tip mounting structure in a conventional face mill different from FIG.

15 is a cross-sectional view of the tip mounting structure in FIG. 14 in a direction perpendicular to the axis of the tool main body.

[Explanation of symbols]

 17 face milling 18 tool body 19, 19 'mounting groove 20 tip mounting seat 22, 40 throw-away tip 23, 41b seating surface 24, 28, 43, 44 sawtooth 29, 29' wedge member 37, 45 adjusting screw 41 cartridge 42 mounting seat

Claims (4)

[Claims] 1. A throw-away type milling tool in which a throw-away tip is pressed by a wedge member into a mounting groove formed in a tool body that rotates about an axis, and a seating surface of the throw-away tip. And a saw-tooth that engages with each other at the tip mounting seat of the mounting groove. 2. An adjusting member for adjusting an amount of protrusion of the throw-away tip in a direction in which the saw tooth extends in a side surface of the throw-away tip of the tool body. 1. The indexable milling tool according to 1. 3. A throw-away type milling tool in which a cartridge having a throw-away tip attached thereto is mounted by being pressed by a wedge member into a mounting groove formed in a tool body that rotates about an axis. A throw-away type milling tool, characterized in that the seating surface and the mounting seat of the mounting groove are formed with saw teeth that engage with each other. 4. The thrower according to claim 3, wherein an adjusting member for adjusting a projecting amount of the cartridge in a direction in which the saw teeth extend is provided on a side surface of the cartridge of the tool main body. Away type milling tool.