WO2016203843A1 - 工具ボデーおよび切削工具 - Google Patents
工具ボデーおよび切削工具 Download PDFInfo
- Publication number
- WO2016203843A1 WO2016203843A1 PCT/JP2016/062598 JP2016062598W WO2016203843A1 WO 2016203843 A1 WO2016203843 A1 WO 2016203843A1 JP 2016062598 W JP2016062598 W JP 2016062598W WO 2016203843 A1 WO2016203843 A1 WO 2016203843A1
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- WO
- WIPO (PCT)
- Prior art keywords
- contact
- cutting
- tool
- cutting insert
- ridge line
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/109—Shank-type cutters, i.e. with an integral shaft with removable cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts
- B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts having a special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2226—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/0494—Rectangular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/16—Supporting or bottom surfaces
- B23C2200/164—Supporting or bottom surfaces discontinuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/08—Side or top views of the cutting edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
- B23C2210/168—Seats for cutting inserts, supports for replacable cutting bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/202—Plate-like cutting inserts with special form
Definitions
- the present invention relates to a tool body on which a cutting insert is detachably mounted, and a cutting tool including the tool body.
- Patent document 1 is an example of the rotary cutting tool using the cutting insert which has a cutting blade on both surfaces.
- the cutting insert has a seating surface that is recessed inward with respect to the cutting edge.
- the seating surface is formed in a flat shape.
- wearing with this cutting insert is illustrated.
- the base surface (sitting surface) of the chip seat has a flat surface that comes into contact with the cutting insert.
- An object of the present invention is to provide a tool body and a cutting tool having a tip seat that can stably hold a cutting insert.
- the tool body of the present invention is a tool body having a tip seat for mounting a cutting insert, and the tip seat has a base surface and a side wall surface extending so as to intersect the base surface.
- the base surface has a contact surface that contacts the cutting insert and a contact convex portion.
- the abutting portion of the abutting surface is planar, and the abutting portion of the abutting convex portion is linear or dot-shaped.
- the cutting tool of the present invention includes the tool body of the present invention.
- FIG. 1 is a perspective view of a cutting tool according to an embodiment of the present invention.
- FIG. 2 is a partially enlarged perspective view of the periphery of the chip seat from which the cutting insert is removed from the cutting tool of FIG. 3 is a perspective view of a cutting insert attached to the cutting tool of FIG.
- FIG. 4 is a plan view of the cutting insert of FIG.
- FIG. 5 is a right side view of the cutting insert of FIG.
- FIG. 6 is a front view of the cutting insert of FIG.
- FIG. 7 is an enlarged perspective view of the cutting tool of FIG. 1 as viewed from the direction facing the cutting insert.
- FIG. 8 is a schematic cross-sectional view taken along the line VIII-VIII in FIG.
- FIG. 9 is a schematic cross-sectional view taken along the line IX-IX in FIG.
- the cutting tool 1 in this embodiment is a rotary cutting tool using three cutting inserts 20, including a tool body 2, and having a tool rotation axis O defined.
- the tool body 2 has the same three chip seats 6 as the number of cutting inserts 20 in order to mount the cutting inserts 20.
- the cutting insert 20 of this embodiment includes first and second end faces 21, 22 that are substantially opposite, i.e., substantially opposite to each other, as shown in FIGS. And a peripheral side surface 23 connecting between the end surfaces of the two.
- the first end face 21 is formed in a substantially rectangular shape in plan view.
- the cutting insert 20 has a hole 26 that passes through substantially the center of the first and second end faces 21 and 22.
- a first cutting edge 24 a that acts as a cutting edge 24 is formed at the intersecting ridge line portion between the first end surface 21 and the peripheral side surface 23.
- a second cutting edge 24 b is formed at the intersecting ridge line portion between the second end surface 22 and the peripheral side surface 23.
- a plurality of cutting edges 24 are formed for each of the first and second end faces 21, 22, but these cutting edges 24 are 180 ° rotationally symmetric with respect to the central axis C of the hole 26. And is supposed to be placed. Therefore, when each of the first and second end faces 21, 22 is damaged by using one cutting edge 24, the cutting insert 20 is removed and rotated around the central axis C, and another cutting edge 24 is removed. It is economical because it can be used multiple times.
- the 2nd cutting edge 24b of the cutting insert 20 of this embodiment is the 1st cutting edge 24a with respect to the rotating shaft at the time of reversing the 1st end surface 21 and the 2nd end surface 22 of the cutting insert 20.
- the first end face 21 and the second end face 22 can be interchanged, and the cutting insert 20 is more economical.
- the bottom view, left side view, and rear view of the cutting insert 20 are the same as the plan view, right side view, and front view, respectively, and are therefore omitted.
- the first end surface 21 includes a first seating surface 25a that acts as a seating surface 25 when the cutting insert 20 is attached to the chip seat 6 so that the second cutting edge 24b can be used.
- the second end surface 22 includes a second seating surface 25b that acts as a seating surface 25 when the cutting insert 20 is attached to the tip seat 6 so that the first cutting edge 24a can be used.
- the seating surface 25 is a surface for contacting the tip seat 6 when the cutting insert 20 is mounted on the cutting tool 1.
- Each of the seating surfaces 25 is a substantially flat surface. More specifically, each seating surface 25a, 25b is a plane here.
- the seating surface 25 is formed around the hole 26 so as to surround it.
- an intermediate surface M is defined between the first end surface 21 and the second end surface 22.
- the intermediate surface M is defined at the center between the first end surface 21 and the second end surface 22 and parallel to the first seating surface 25 a on the first end surface 21.
- the first seating surface 25a is disposed on the intermediate surface M side with respect to the first cutting edge 24a
- the second seating surface 25b is disposed on the intermediate surface M side with respect to the second cutting edge 24b. That is, at least a part of the first cutting edge 24a is further away from the intermediate surface M than the first seating surface 25a, and at least a part of the second cutting edge 24b is intermediate to the second seating surface 25b. It is separated from the surface M.
- the line perpendicular to the intermediate surface M is a line parallel to the central axis C of the hole 26 and also a line along the thickness direction of the cutting insert 20. Therefore, at least a part of the first cutting edge 24a is spaced outward from the first seating surface 25a in the thickness direction of the cutting insert 20, and at least a part of the second cutting edge 24b is a second seating. It can also be said that the cutting insert 20 is separated from the surface 25b in the thickness direction outside.
- a hard material such as cemented carbide, cermet, ceramics, and sintered body containing cubic boron nitride, or the surface of these hard materials is subjected to PVD or CVD coating. Or a sintered body containing diamond or single crystal diamond. In addition, it is preferable that the material of parts other than the cutting edge 24 vicinity is also used as the same hard material.
- the cutting insert 20 having the above-described configuration is detachably attached to the tip seat 6 of the tool body 2 of the cutting tool 1 of this embodiment by using a clamp member 30 that is mechanical attachment means.
- the cutting tool 1 and the tool body 2 to which the cutting insert 20 is attached will be further described with reference to FIGS. 1, 2, and 7 to 9.
- the cutting tool 1 of this embodiment uses a tightening screw 30 as the clamp member 30.
- the cutting tool 1 includes a tool body 2 provided with a plurality (three in this case) of chip seats 6.
- One cutting insert 20 can be detachably attached to each chip seat 6.
- this invention is not shown in figure, it does not exclude the cutting tool provided with the tool body provided with only one chip seat.
- the tool body 2 is configured to rotate around a tool rotation axis O determined so as to pass through the tool body 2 from the distal end portion 3 to the proximal end portion 5 side. That is, the tool body 2 is formed in a substantially cylindrical shape as a whole. Three tip seats 6 are arranged around the tool rotation axis O at equal angular intervals around the tip 3 of the tool body 2.
- the plurality of cutting inserts 20 used in the cutting tool 1 all have the same configuration and the same shape. Therefore, all of the plurality of chip seats 6 disposed on the tool body 2 have the same shape.
- the cutting tool 1 of this embodiment is a rotary cutting tool. More specifically, the cutting tool 1 of this embodiment is an end mill capable of shoulder cutting using the cutting insert 20 described above.
- the cutting insert 20 is mounted on each tip seat 6 of the tool body 2 so that the first end face 21 or the second end face 22 faces forward in the tool rotation direction around the tool rotation axis O.
- Each chip seat 6 has a base surface 7 and a side wall surface 8 and is open toward the tip 3 side and the outer periphery 4 side of the tool body 2. That is, the side wall surface 8 of the chip seat 6 has an opening 12 that opens, and the opening 12 opens toward the tip 3 side and the outer periphery 4 side.
- the surface with which the first or second end surface 21, 22 of the cutting insert 20 contacts is referred to as the base surface 7 of the tip seat 6, and the surface with which the peripheral side surface 23 of the cutting insert 20 contacts is referred to as the side wall surface 8. .
- the base surface 7 faces forward in the tool rotation direction around the tool rotation axis O.
- the side wall surface 8 extends so as to intersect the base surface 7 and has a shape corresponding to the peripheral side surface 23 of the cutting insert 20. Since the cutting insert 20 in this embodiment is a substantially rectangular plate shape, the side wall surface 8 is comprised from the wall surface which faces the outer periphery 4 side, and the wall surface which faces the front-end
- the cutting insert 20 is arranged on the chip seat 6 so that one cutting edge 24 of the cutting insert 20 can be used, that is, a working cutting edge, and is fixed by a fastening screw 30.
- the configuration of the tip seat 6 will be specifically described by taking as an example a case where the cutting insert 20 is attached to the tip seat 6 so that the first cutting edge 24a can be used.
- the cutting insert 20 is mounted on the chip seat 6 with the first cutting edge 24 a as the working cutting edge.
- the base surface 7 of the chip seat 6 is formed with a contact surface 9, a contact protrusion 10, and a screw hole 13.
- the contact surface 9 is formed in a substantially flat shape. More specifically, the contact surface 9 of the cutting tool 1 of this embodiment is a flat surface.
- the contact protrusion 10 includes first and second planes 11b and 11c, and a contact ridge line 11a formed linearly at the intersecting ridge line portion of these planes.
- the contact ridge line 11 a is disposed on the opposite side of the contact surface 9 with the screw hole 13 interposed therebetween.
- the contact ridge line 11 a is disposed on the same plane as the contact surface 9.
- FIG. 8 schematically shows a contact state between the cutting insert 20 and the contact surface 9.
- FIG. 8 is a schematic cross-sectional view taken along the line VIII-VIII in FIG. Since the seating surface 25 of the cutting insert 20 and the contact surface 9 are each formed in a plane, they are in surface contact with each other.
- FIG. 9 schematically shows a contact state between the cutting insert 20 and the contact ridge line 11a.
- FIG. 9 is a schematic cross-sectional view taken along the line IX-IX in FIG. Since the contact ridgelines 11a are substantially linear, they are in line contact with each other. That is, in the schematic diagram of the cross section, the contact is made at one point.
- the first seating surface 25a of the cutting insert 20 is disposed on the intermediate surface M side with respect to the first cutting edge 24a, and the second seating surface 25b is disposed on the intermediate surface M side with respect to the second cutting edge 24b.
- the first and second seating surfaces 25a and 25b are each formed in a substantially flat surface shape, they can be easily brought into contact with the chip seat 6.
- the contact surface 9 of the tool body 2 is formed in a substantially flat surface shape, and is formed on the tip 3 side of the cutting tool 1. Therefore, the contact surface 9 can be brought into surface contact with the second seating surface 25b in the vicinity of the working cutting edge of the cutting insert 20. For this reason, the cutting insert 20 can be reliably supported stably.
- the contact ridge line 11a of the tool body 2 is formed on the same plane as the contact surface 9 and in a straight line. For this reason, the contact ridge line 11 a can be in line contact with the second seating surface 25 b of the cutting insert 20 in cooperation with the contact surface 9. That is, as the contact portion, the contact surface 9 is mainly operated, and the contact ridgeline 11a is auxiliaryly operated and the cutting insert 20 is inclined while supporting the vicinity of the cutting edge 24 reliably and stably. Can be prevented.
- the tool body 2 and the cutting tool 1 have the abutting convex portion 10 in addition to the abutting surface 9 on the base surface 7 of the chip seat 6, and therefore the cutting insert 20 of the cutting seat 20 is subjected to the cutting process. Increased stability. Thereby, the abnormal damage of the cutting insert 20 can be prevented, or the processing accuracy of the workpiece can be improved.
- the cutting insert 20 in this embodiment is suitable for an end mill capable of shoulder cutting. However, it is not limited to this.
- the present invention can be used as a method for fixing a cutting insert in various forms and applications.
- the present invention is not necessarily effective when the seating surface of the cutting insert can be a flat surface with high accuracy over a wide range by grinding or the like, such as when the cutting edge is formed only on one end surface. This is because if the seating surface of the cutting insert is a flat surface with high accuracy, it is preferable that the base surface of the chip seat is also a flat surface with high accuracy.
- the present invention is particularly effective when the cutting edge 24 is formed on both of the two end faces 21 and 22 and the seating surface 25 is closer to the intermediate surface M than the cutting edge 24 as in the cutting insert 20 in this embodiment. It is valid.
- the seating surface is formed in such a shape, it is difficult to grind the seating surface. Therefore, the seating surface is often left in a state where it is pressed and sintered with powder, or is further coated. In that case, the flatness of the seating surface is not necessarily high, and even if the base surface of the chip seat is a highly accurate flat surface, it is difficult to make the entire surface contact. Therefore, it is effective to selectively limit the base surface of the chip seat as in the present invention in a portion to be brought into contact with.
- the seating surface 25 of the cutting insert 20 in this embodiment is formed in a substantially flat shape, but is not limited to this.
- the seating surface may have any shape as long as it can be brought into contact with the base surface of the chip seat.
- the seating surface can be a curved surface.
- the seating surface is preferably formed in a substantially flat shape.
- the cutting edge 24 is formed on the tip 3 and the outer periphery 4. Therefore, in order to counter the cutting resistance applied to the cutting edge 24, it is preferable that the contact surface 9 that contacts the seating surface 25 be as close as possible to the tip 3 and the outer periphery 4. That is, like the chip seat 6 in this embodiment, the contact surface 9 is preferably formed close to the tip 3 side and the outer periphery 4 side. Moreover, it is preferable that the contact ridge line 11 a cooperating with the contact surface 9 is formed at a position as far as possible from the contact surface 9 as long as it can contact the seating surface 25 of the cutting insert 20.
- the contact ridge line 11a is preferably formed at a position separated on the proximal end portion 5 side.
- the contact ridge line 11a is preferably formed at a position spaced apart on the tool rotation axis O side. That is, it is most preferable that the contact ridge line 11a is formed at a position spaced from the contact surface 9 toward the base end 5 side and the tool rotation axis O side.
- the first and second end faces 21 and 22 of the cutting insert 20 in this embodiment are formed in a substantially rectangular shape in plan view. Therefore, the longitudinal direction and the short direction are also determined for the seating surface 25.
- the base surface 7 of the chip seat 6 is also formed in a substantially rectangular shape corresponding to the shape of the cutting insert 20. Accordingly, the base surface 7 also has a longitudinal direction and a short direction.
- the longitudinal direction substantially corresponds to the axial direction of the tool rotation axis O.
- the short direction substantially corresponds to the radial direction of the cutting tool 1.
- the contact ridge line 11a is preferably formed at a position spaced apart from the contact surface 9 in the longitudinal direction. That is, the contact ridge line 11a is preferably formed on the base end portion 5 side.
- the contact surface 9 of the tool body 2 in this embodiment is formed in a substantially flat shape, but is not limited to this.
- the contact surface 9 may have any shape as long as it can contact the seating surface 25 of the cutting insert 20.
- the seating surface of the cutting insert may be a curved surface. Therefore, the contact surface may be a curved surface corresponding to the seating surface.
- the contact surface is also preferably formed in a substantially flat shape.
- the contact protrusion 9 of the tool body 2 in this embodiment is formed so as to have a linear contact ridge line 11a, but is not limited thereto.
- the abutment convex portion may have any shape as long as it can abut against the seating surface of the cutting insert in cooperation with the abutment surface. Although not shown, for example, the shape may be such that only one point of the apex of the abutting convex portion comes into contact with the seating surface. However, it is more preferable that the contact convex portion is in contact with the seating surface at a linear (ridge-shaped) contact ridge line. When the contact is made at only one vertex of the contact protrusion, the contact protrusion is easily damaged by the cutting resistance.
- the abutment convex portion abuts on the seating surface at a linear ridgeline instead of a dot shape.
- the shape of the contact ridge line is not limited to a straight line, and any shape may be used as long as it can contact the seating surface.
- the contact ridge line is preferably formed on the same plane as the contact surface. More preferably, the contact ridge line is formed in a straight line.
- the contact ridge line 11a is in line contact with the seating surface 25, strictly speaking, it is in surface contact with a slight width. This is because even if the intersecting ridge line portion is formed at a perfect corner, it undergoes plastic deformation due to cutting resistance or the like. Therefore, here, the case where the width of the abutting surface is 0.5 mm or less is called line contact.
- the contact surface 9 mainly acts as the contact portion, and the contact ridgeline 11a acts as an auxiliary while the support near the cutting edge 24 is reliably and stably supported. It is a feature of the present invention to prevent tilting.
- the contact ridge line 11a acts in an auxiliary manner.
- the contact area of the contact surface 9 is preferably 10 times or more the contact area of the contact ridge line 11a.
- the contact ridge line 11a can also be expressed by a ratio between its width and length.
- the width of the contact ridge line is preferably 20% or less of the length of the contact ridge line.
- the tip seat 6 of the tool body 2 has one contact surface 9 and one contact protrusion 10, but the present invention is not limited to this.
- a plurality of contact surfaces 9 and contact protrusions 10 may be formed.
- the abutting surface 9 it is effective to clarify the portion to be abutted, and therefore it is preferable not to increase the abutting surface 9 so much. That is, it is preferable that only one contact surface 9 is formed.
- the number of the contact protrusions 10 is not limited. However, even if the contact protrusion 10 is increased, consideration is given so as not to prevent the contact surface 9 from acting on its own. Therefore, it is more preferable that only one contact protrusion 10 and one contact ridge line 11a are formed.
- the cutting insert 20 in this embodiment has a substantially rectangular plate shape, but is not limited thereto.
- the present invention can be applied to various types of cutting inserts such as substantially parallelograms and triangles.
- the cutting insert has a substantially quadrangular plate shape.
- the cutting insert is more preferably a substantially parallelogram plate shape whose longitudinal direction is defined.
- the base surface of the chip seat corresponding to the cutting insert is also preferably a substantially quadrangular plate shape.
- the base surface is more preferably a substantially parallelogram plate shape whose longitudinal direction is defined.
- the present invention can achieve the maximum effect when the abutting surface and the abutting ridge line cooperate with each other with respect to the cutting insert defined in the longitudinal direction.
- the cutting tool 1 of the present invention uses the clamping screw 30 as the clamp member 30.
- the present invention is not limited to this, and various known techniques such as a wedge and a pressing piece can be applied to the clamp member.
- various known techniques such as a wedge and a pressing piece can be applied to the clamp member.
- the tool diameter that can be used is limited, and a small-diameter rotary cutting tool may be preferred.
- the cutting tool 1 of the present invention preferably uses a tightening screw 30.
- These cutting tools can be used for cutting steel materials by being mounted on machine tools.
- the embodiment of the cutting insert, tool body, and cutting tool of the present invention has been described as an example, but the embodiment of the present invention is not limited to the above.
- the present invention is not limited to an end mill, and can be applied to a face mill or a disk-shaped side cutter.
- the present invention can be applied not only to the rolling tool as in the above embodiment, but also to other types of cutting tools such as a turning tool and a drilling tool.
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Abstract
Description
2 工具ボデー
3 先端部
4 外周
5 基端部
6 チップ座
7 ベース面
8 側壁面
9 当接面(第1の当接部)
10 当接凸部(第2の当接部)
11a 当接稜線
11b 当接凸部の第1の平面
11c 当接凸部の第2の平面
12 開口部
13 ねじ穴
20 切削インサート
21 第1の端面
22 第2の端面
23 周側面
24 切れ刃
24a 第1の切れ刃
24b 第2の切れ刃
25 着座面
25a 第1の着座面
25b 第2の着座面
26 穴
30 クランプ部材(締め付けねじ)
C 切削インサートの穴の中心軸線
M 中間面
O 工具回転軸線
Claims (15)
- 切削インサート(20)を装着するためのチップ座(6)を有する工具ボデー(2)であって、
前記チップ座(6)は、ベース面(7)と、該ベース面(7)に交差するように延在する側壁面(8)とを有し、
前記ベース面(7)は、前記切削インサート(20)と当接する当接面(9)および当接凸部(10)を有し、
前記当接面(9)の当接部は面状とされ、
前記当接凸部(10)の当接部は線状または点状とされる工具ボデー。 - 前記当接面(9)は、略平坦面状とされる請求項1に記載の工具ボデー。
- 前記当接凸部(10)は、当接稜線(11a)を有し、
前記当接稜線(11a)は、前記当接面(9)と同一平面上に配置される請求項2に記載の工具ボデー。 - 前記当接凸部(10)は、互いに交差する2つの平面(11b、11c)を有し、
該2つの平面(11b、11c)の交差稜線部に前記当接稜線(11a)を有し、
該当接稜線(11a)は、略直線状とされる請求項3に記載の工具ボデー。 - 前記チップ座(6)は、前記側壁面(8)が開く開口部(12)を有し、
前記当接稜線(11a)は、前記当接面(9)よりも前記開口部(12)から離れて位置する請求項3または4に記載の工具ボデー。 - 前記ベース面(7)は、長手方向が定められ、
前記当接面(9)と前記当接凸部(10)とは、前記長手方向において離間して配置される請求項1から5のいずれか一項に記載の工具ボデー。 - 前記ベース面(7)は、略四辺形とされる請求項1から6のいずれか一項に記載の工具ボデー。
- 請求項1から7のいずれか一項に記載の工具ボデーを備える切削工具。
- 工具回転軸線(O)を有する回転切削工具とされる請求項8に記載の切削工具。
- 少なくとも1つの前記チップ座(6)は、前記側壁面(8)が開く開口部(12)を有し、
該開口部(12)は、前記工具回転軸線(O)から離間した外周部(4)に少なくとも開口する請求項9に記載の切削工具。 - 前記当接面(9)と前記当接凸部(10)とは、前記工具回転軸線(O)の延びる方向に離間して配置される請求項9または10に記載の切削工具。
- 前記当接面(9)は、前記当接凸部(10)よりも該切削工具(1)の先端側に配置される請求項8から11のいずれか一項に記載の切削工具。
- 略平行四辺形板状の前記切削インサート(20)を用いる請求項8から12のいずれか一項に記載の切削工具。
- 前記切削インサート(20)は、略平行四辺形の第1および第2の端面(21、22)と、該第1および第2の端面(21、22)の間をつなぐ周側面(23)と、を有し、
前記第1の端面(21)と前記周側面(23)との交差稜線に第1の切れ刃(24a)を有し、
前記第2の端面(22)と前記周側面(23)との交差稜線に第2の切れ刃(24b)を有する請求項8から13のいずれか一項に記載の切削工具。 - 前記切削インサート(20)は、前記第1および第2の端面(21、22)のそれぞれに第1および第2の着座面(25a、25b)を有し、
前記第1の切れ刃(24a)の少なくとも一部は、前記第1の端面(21)の前記第1の着座面(25a)よりも前記切削インサート(20)の厚さ方向外側に離間し、
前記第2の切れ刃(24b)の少なくとも一部は、前記第2の端面(22)の前記第2の着座面(25b)よりも前記切削インサート(20)の厚さ方向外側に離間する請求項14に記載の切削工具。
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EP16811318.1A EP3311946B1 (en) | 2015-06-19 | 2016-04-21 | Tool body in combination with a cutting insert and cutting tool |
US15/536,412 US10384277B2 (en) | 2015-06-19 | 2016-04-21 | Tool body and cutting tool |
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EP (1) | EP3311946B1 (ja) |
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EP3311946B1 (en) | 2020-02-19 |
JPWO2016203843A1 (ja) | 2017-06-29 |
EP3311946A1 (en) | 2018-04-25 |
CN107635704A (zh) | 2018-01-26 |
JP6066391B1 (ja) | 2017-01-25 |
CN107635704B (zh) | 2020-01-07 |
CN110253063B (zh) | 2021-11-19 |
CN110253063A (zh) | 2019-09-20 |
EP3311946A4 (en) | 2019-01-09 |
US10384277B2 (en) | 2019-08-20 |
US20170326658A1 (en) | 2017-11-16 |
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