WO2013073690A1 - Outil de coupe et élément rotatif pour mécanisme de serrage de plaquette de coupe utilisé dans ledit outil de coupe - Google Patents

Outil de coupe et élément rotatif pour mécanisme de serrage de plaquette de coupe utilisé dans ledit outil de coupe Download PDF

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Publication number
WO2013073690A1
WO2013073690A1 PCT/JP2012/079861 JP2012079861W WO2013073690A1 WO 2013073690 A1 WO2013073690 A1 WO 2013073690A1 JP 2012079861 W JP2012079861 W JP 2012079861W WO 2013073690 A1 WO2013073690 A1 WO 2013073690A1
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WO
WIPO (PCT)
Prior art keywords
pin
lever
cutting tool
rotating member
hole
Prior art date
Application number
PCT/JP2012/079861
Other languages
English (en)
Japanese (ja)
Inventor
亮 比留川
Original Assignee
株式会社タンガロイ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社タンガロイ filed Critical 株式会社タンガロイ
Priority to JP2013544353A priority Critical patent/JP5660230B2/ja
Publication of WO2013073690A1 publication Critical patent/WO2013073690A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1662—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the cutting insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/02—Cams

Definitions

  • the present invention relates to a cutting tool, and more particularly to a cutting tool having a clamping mechanism for a cutting insert and a rotating member for the clamping mechanism.
  • a clamp mechanism that can easily attach and detach the cutting insert.
  • machine tools such as small automatic lathes that automatically and continuously process small articles by moving a plurality of cutting tools in parallel and relatively moving the cutting tool and the work material are very narrow inside the machine.
  • the clamp mechanism is required to be able to easily attach and detach the cutting insert even in a narrow space.
  • the clamp mechanism includes a locking pin that presses and fixes the cutting insert against the chip seat, a connecting pin that presses the locking pin, and a rotating member that moves the connecting pin with respect to the locking pin.
  • the rotating member basically has a substantially cylindrical shape and includes a side surface portion having an outer periphery whose radius from the rotating shaft gradually changes in a cross section perpendicular to the rotating shaft direction. Therefore, by rotating the rotating member around the rotating shaft, a portion having a large radius from the rotating shaft and a portion having a small radius can be brought into contact with the connecting pin.
  • the above-described clamp mechanism of Patent Document 1 has a problem that the locking pin for fixing the cutting insert is easily detached from the cutting tool. That is, when the cutting insert is not unclamped (that is, when the connecting pin is retracted from the position where the locking pin is pressed), not only the cutting insert but also the locking pin and the machine Thus, the locking pin is easily detached from the cutting tool. Therefore, during the work of replacing the cutting insert, the operator must work carefully so that the locking pin does not fall off, and in the event of dropping, the operator may lose the locking pin. .
  • the present invention has been made in view of the above problems, and includes a clamp mechanism that can easily attach and detach the cutting insert even in a narrow space, and can prevent the member that fixes the cutting insert to the cutting tool from falling off during the attaching and detaching operation. It aims at providing the provided cutting tool.
  • Another object of the present invention is to provide a cutting tool having a clamp mechanism capable of selectively removing a component member and a rotating member suitable for constituting the clamp mechanism.
  • the present invention provides a cutting tool having a tip seat (7) to which a cutting insert (2) can be detachably attached, A lever hole (8) drilled toward the inside of the cutting tool; A lever (6) received in the lever hole (8) and fixed to the tip seat (7) by contacting the cutting insert (2); A pin hole (9) drilled toward the inside of the cutting tool and intersecting the lever hole (8); A pin (5) housed in the pin hole (9) and having one end (51) for pressing the lever (6) to contact the cutting insert (2) and the other end (53) When, Rotating member holding hole (10) drilled in the cutting tool so as to be connected to the pin hole (9) at the portion of the pin hole (9) where the other end (53) of the pin (5) is located.
  • a rotating member (4) rotatably held in the rotating member holding hole (10), which engages with the other end (53) of the pin (5), and the pin hole according to a rotation position.
  • a pin engaging part (41) for changing the position of the one end part (51) of the pin (5) relative to the lever (6) by changing the position of the pin (5) in (9) is provided.
  • a rotating member (4), With The lever (6) has a fitting portion (14) fitted to the fitting portion of the one end portion (51) of the pin (5), The pin engaging portion (41) of the rotating member (4) is recessed relatively large toward the rotating shaft (A) in a cross section perpendicular to the rotating shaft (A) of the rotating member (4).
  • this invention is a rotating member (4) used for the said cutting tool, Comprising: The said deep groove part (15), the said shallow groove part (16), and the said groove-less part (43) were formed.
  • the pin engaging portion (41) is provided in the rotating member.
  • the rotating groove (4) has the shallow groove portion (16) and the deep groove portion (15)
  • the cutting insert (2) can be removed from the cutting tool (1), but the lever (6 ) Can be selectively switched between a state where it cannot be removed and a state where the lever (6) can be completely removed. Therefore, it is possible to prevent the lever (6) from falling off when the cutting insert (2) is attached to and detached from the cutting tool (1). Further, when a member (for example, the lever (6)) constituting the clamp mechanism is damaged, it can be exchanged independently of another member (for example, the pin (5)).
  • FIG. 4 is a longitudinal sectional view showing an embodiment of the cutting tool of the present invention in a state where a cutting insert is mounted, corresponding to a cross section taken along line II in FIG. 4B. It is a longitudinal cross-sectional view which shows one Embodiment of the cutting tool of this invention in the state which has removed the cutting insert but not the lever. It is a longitudinal cross-sectional view which shows one Embodiment of the cutting tool of this invention in the state in which the lever is not restrained. It is a perspective view showing one embodiment of a cutting tool of the present invention in the state where a cutting insert is removed. It is a perspective view which shows one Embodiment of the cutting tool of this invention in the state with which the cutting insert is mounted
  • FIG. 5B is a side view of the lever shown in FIG. 5A. It is a perspective view which shows one Embodiment of the pin applicable to the cutting tool of this invention.
  • FIG. 6B is a side view of the pin shown in FIG. 6A. It is a perspective view which shows one Embodiment of the rotation member applicable to the cutting tool of this invention.
  • FIG. 7B is a front view of the rotating member shown in FIG. 7A.
  • FIG. 7B is a cross-sectional view taken along the line VIIC-VIIC of the rotating member shown in FIG. 7B.
  • FIG. 7B is a cross-sectional view taken along the line VIIC-VIIC of the rotating member shown in FIG. 7B, showing the rotating member housed in a holding hole. It is a longitudinal cross-sectional view which shows the modification of the cutting tool concerning one Embodiment of this invention.
  • the cutting tool 1 of the present embodiment is disposed within a cutting tool body 3 to which a cutting insert 2 can be attached and the cutting tool body 3.
  • the rotating member 4, the pin 5 that engages with the rotating member 4, and the lever 6 that fixes the cutting insert 2 by being pressed by the pin 5, are basically provided.
  • the rotating member 4 constitutes a clamping mechanism for the cutting insert 2.
  • a tip seat for attaching the cutting insert 2 to the cutting tool body 3 is provided on the top surface of the cutting tool body 3 (on the side facing the workpiece not shown). 7 is provided.
  • the tip seat 7 is formed of a bottom surface that is lowered in a step shape from the top surface of the cutting tool body 3 and two side surfaces that are in contact with the bottom surface.
  • the lever hole 8 is drilled from the bottom surface of the tip seat 7 toward the lower surface of the cutting tool, and the lever 6 can be inserted into the lever hole 8 through the opening of the lever hole 8 located on the bottom surface. Furthermore, a pin hole 9 that intersects with the lever hole 8 and a rotating member holding hole 10 that is connected to the innermost end of the pin hole 9 are formed toward the inside of the cutting tool body 3. . More specifically, when the lever hole 8 is viewed in a longitudinal sectional view (FIGS.
  • a vertical hole is formed from the bottom surface of the tip seat 7 toward the inside of the cutting tool body 3, and a lever 6 for fixing the cutting insert 2 is housed therein.
  • the pin hole 9 is formed from the distal end side to the proximal end side of the cutting tool body 3 along the longitudinal direction of the cutting tool body 3 when the longitudinal sectional view along the longitudinal direction of the cutting tool body 3 is viewed. Which intersects the lever hole 8.
  • the pin hole 5 accommodates a pin 5 for pressing the lever 6.
  • the rotating member holding hole 10 is a horizontal hole extending in a direction substantially perpendicular to the longitudinal direction of the cutting tool body 3, and is connected to an end portion on the proximal end side of the pin hole 9.
  • the rotating member 4 is accommodated in the rotating member holding hole 10.
  • the lever 6 is a substantially cylindrical member, and generally includes an upper portion 11 that contacts the cutting insert 2 and a lower portion 12 that contacts the pin 5. Yes. At the upper end on the upper part 11 side, at least one projecting portion 13 projecting radially from the outer periphery is provided. This protrusion 13 abuts against the inner wall of the mounting hole of the cutting insert 2.
  • the lower portion 12 is provided with a recessed portion 14 for receiving and fitting the pin 5.
  • the recess 14 and the protrusion 13 are formed on the outer periphery of the lever 6 so as to be aligned in a direction parallel to the longitudinal axis of the lever 6.
  • the lever 6 has a portion having a maximum diameter near the connection portion between the upper portion 11 and the lower portion 12.
  • This maximum diameter portion is a portion that contacts the inner wall of the lever hole 8 on the tip side of the cutting tool.
  • the maximum diameter portion is a fulcrum
  • the protruding portion 13 of the upper portion 11 is an action point
  • the recessed portion 14 of the lower portion 12 is a power point. That is, the pressing force of the pin 5 against the recessed portion 14 of the lower portion 12 is transmitted to the protruding portion 13 of the upper portion 11 through the maximum diameter portion which is a fulcrum, and the cutting insert 2 is strongly pressed against the wall surface of the tip seat 7. It is fixed by that.
  • the shape of the lever 6 is not limited to the above, and any shape that can fix the cutting insert 2 to the wall surface of the tip seat 7 using the lever principle may be used.
  • the pin 5 is a substantially rod-shaped member as shown in FIGS. 6A and 6B.
  • the one end portion 51 has a portion whose diameter is larger than that of the body portion 52, and the other end portion 53 is formed so that the diameter gradually decreases toward the tip.
  • the one end portion 51 is a portion that enters the recessed portion 14 of the lever 6.
  • the one end portion 51 itself forms the fitting portion of the pin 5, and the recessed portion 14 forms the fitting portion of the lever 6.
  • the other end 53 of the pin 5 is a part that engages with the rotating member 4.
  • the shape of the pin 5 is not limited to the above, and any shape may be used as long as it can properly contact the lever 6 and the rotating member 4.
  • the rotating member 4 has a pin engaging portion 41 having a shape partially cut out along the circumferential direction at the center in the longitudinal direction of the substantially cylindrical member. Is provided.
  • the substantially cylindrical rotating member 4 has a rotation axis A that is a central axis in the longitudinal direction, and the pin engaging portion 41 is perpendicular to the rotation axis A.
  • the distance from the rotation axis A that is, the radius
  • the pin engaging portion 41 is a portion greatly depressed to the rotation axis A (that is, a portion having a large reduction ratio of the diameter from the rotation axis A.
  • a deep groove portion (Referred to by reference numeral 15) and a portion that is depressed to approximately the middle between the central axis A and the original outer periphery of the rotating member 4 (that is, a portion with a small reduction ratio from the rotating shaft A.
  • a shallow groove portion, 16 a portion between these portions where a groove is not substantially formed
  • a fastening tool such as a wrench is connected to the concave portion 42 provided on the end surface of the rotating member 4 and rotated to change the engaging position of the pin engaging portion 41 with respect to the other end portion 53 of the pin 4.
  • the position of the pin 5 in the hole 9, that is, the position where the one end 51 of the pin 5 enters the concave portion 14 of the lever 6 can be changed.
  • the deep groove portion 15 and the shallow groove portion 16 are disposed at positions opposite to each other by 180 ° across the rotation axis, and are symmetrical to each other.
  • the present invention is not limited to such an arrangement, and the deep groove portion 15 and the shallow groove portion 16 may be in a positional relationship other than 180 °, or each may be asymmetrical. Further, the number of deep groove portions 15 and shallow groove portions 16 can also be determined as appropriate.
  • the groove-less portion 43 of the pin engaging portion 41 is preferably a position connected to the shallow groove portion 16 in a cross section perpendicular to the rotation axis A (that is, the outermost peripheral side of the shallow groove portion). From the position) to the position connected to the deep groove portion 15 (that is, the outermost peripheral side position of the deep groove portion).
  • the radius of the outer peripheral end of the deep groove 15 is the maximum radius of the rotating member 4.
  • the lever 6, the pin 5 and the rotating member 4 described above are accommodated in the lever hole 8, the pin hole 9 and the rotating member holding hole 10, respectively.
  • the lever 6 is housed in the lever hole 8 with the recessed portion 14 facing the cutting tool base end side
  • the pin 5 is housed in the pin hole 9 so that the one end portion 51 having an enlarged diameter faces the lever direction. Is done.
  • an elastic body 17 such as a spring is provided on the tip side of the cutting tool in the lever hole 8, and comes into contact with the lower portion 12 of the lever 6 in a direction toward the rotating member 4. It is preferable to energize.
  • the rotating member holding hole 10 is provided perpendicular to the lever hole 8 so that the rotating member 4 is held therein, but the direction of the rotating member holding hole 10 or the rotating member 4 is the same. Is not limited to this.
  • the rotating member holding hole 10 is provided in parallel to the lever hole 8 from the upper surface or the lower surface of the cutting tool body 3 so as to hold the rotating member 4, and the rotating member 4 is disposed on the upper surface side or the lower surface side of the cutting tool body 3. It is also possible to perform a rotation operation with a tightening tool such as a wrench.
  • the rotating member 4 is formed of a harder material than the material of the pin 5.
  • the cutting insert 2 is fixed to the chip seat 7 by rotating the rotating member 4 from the side surface of the cutting tool 1 using a tightening tool such as a wrench.
  • a tightening tool such as a wrench.
  • the rotating member holding hole 10 is provided through the cutting tool body 3 and the concave portions 42 are provided on both end faces of the substantially cylindrical rotary member 4, the tightening tool can be applied from either side of the cutting tool 1. Is also applicable to the rotating member 4.
  • the rotating member 4 is rotated so that the groove-less portion 43 of the rotating member 4 contacts the pin 5 as shown in FIG. It is done. Thereby, the rotating member 4 reliably pushes the pin 5 to the left in FIG. Therefore, the lower part 12 of the lever 6 is displaced to the left, and the lever 6 can fix the cutting insert 2 to the chip seat 7 with a strong force by the above-described principle.
  • the rotating member 4 When removing the cutting insert 2 from the cutting tool 1, the rotating member 4 is rotated so that the shallow groove portion 16 of the rotating member 4 contacts the pin 5 as shown in FIG. 2.
  • the pin 5 In a state where the shallow groove portion 16 of the rotating member 4 is in contact with the pin 5 (FIG. 2), the pin 5 is slightly pulled toward the rotating member 4 side. Therefore, the pin 5 is only caught lightly on the recessed portion 14 of the lever 6 and does not press the lower portion 12 of the lever 6. Therefore, the lever 6 does not press the cutting insert 2 against the chip seat 7 by the lever principle. Therefore, the cutting insert 2 can be easily removed from the cutting tool 1. Further, at this time, since the pin 5 and the recessed portion 14 of the lever 6 are still in the engaged state, the lever 6 is not dropped from the cutting tool body 3. That is, the state that the cutting insert 2 can be removed but the lever 6 does not come off is achieved.
  • the cutting insert 2 and the lever 6 are removable.
  • the lever 6 does not come off the cutting tool body 3 when the cutting insert 2 is being removed. Therefore, it is possible to reduce the burden on the operator during the attachment / detachment work of the cutting insert 2 and to prevent the lever 6 from being lost.
  • the lever 6 can be freely attached and detached. Therefore, when the lever 6 is damaged and needs to be replaced, only the lever 6 can be detached from the cutting tool body 3 independently of the pin 5.
  • the deep groove portion 15 and the shallow groove portion 16 of the rotating member 4 are disposed at positions opposite to each other by 180 ° with the rotation axis A interposed therebetween. In the case of rotating in any direction, the same rotation operation amount can be obtained. Further, by making each of the deep groove portion 15 and the shallow groove portion 16 symmetric in the cross-sectional shape, the same rotational operation force can be obtained regardless of whether the rotating member 4 is rotated clockwise or counterclockwise. It is possible to eliminate direction restrictions. Further, the rotary member holding hole 10 is provided through the cutting tool main body 3, and the concave member 42 is provided on both end faces of the substantially cylindrical rotary member 4, thereby rotating the rotary member 4 from any of the side surfaces of the cutting tool 1. It is possible to make it. From the above, even in a machine tool that needs to attach and detach the cutting insert 2 or the lever 6 in a small space such as a small automatic lathe, the workability related to attachment and detachment is good.
  • the radius gradually increases from the end of the shallow groove portion 16 to the end of the deep groove portion 15.
  • the rotating member 4 is formed of a harder material than the pin 5, the end of the deep groove portion 15 or the end of the shallow groove portion 16 of the rotating member 4 is deformed by the pressing force by the pin 5. Can be prevented. Therefore, the effect according to the present invention can be maintained over a long period of time.
  • a turning tool is described as a cutting tool, but the present invention is not limited to this. That is, the present invention can also be applied to a tool for turning.
  • the concave portion 14 is provided in the lever 6 and the one end portion 51 of the pin 5 enters and fits there, but other configurations may be employed.
  • the lever 6 is provided with a convex portion, while the one end portion 51 of the pin 6 is provided with a concave portion that can be fitted to the convex portion, and the other end portion 53 of the pin 5 is engaged with the groove-less portion 43.
  • the concave portion provided in the portion 51 covers the convex portion of the lever 6 to press the lever 6 and the other end portion 53 of the pin 5 is engaged with the shallow groove portion 16
  • the concave portion provided in the one end portion 51 is the lever. Although it covers the 6 convex portions, the lever 6 may not be pressed.
  • the entire rotating member 4 may not be formed of a material harder than the material of the pin 5. That is, if the end of the deep groove 15 or the end of the shallow groove 16 of the rotating member 4 can be effectively prevented from being deformed by the pressing force of the pin 5, the rotating member 4 is at least the pin engaging portion 41. As long as the surface is formed harder than the material of the pin 5, it is sufficient.
  • the pin engaging portion 41 that engages with the other end 53 of the pin 5 may be formed of a material harder than the material of the pin 5, or at least the surface of the pin engaging portion 41 is surface hardened. It may be formed harder than the material of the pin 5 by processing.
  • the position of the pin engaging portion 41 in the rotating member 4 can be appropriately determined in relation to the arrangement position of the pin 5 or the pin hole 9, and the rotating member 4 perpendicular to the rotation axis A as described above. It is not limited to the central part in the longitudinal direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

L'invention concerne un outil de coupe équipé d'un mécanisme de serrage grâce auquel une plaquette de coupe peut être facilement fixée ou désolidarisée même dans un espace étroit et la chute de l'élément qui fixe la plaquette de coupe à l'outil de coupe pendant ladite tâche de fixation ou de désolidarisation peut être évitée. L'outil de coupe est muni : d'un levier (6) destiné à fixer la plaquette de coupe (2) ; d'une cheville (5) qui peut se déplacer jusqu'à une première position dans laquelle la cheville presse le levier (6) et fixe la plaquette de coupe (2), une deuxième position dans laquelle la cheville vient en prise avec le levier (6) mais ne le presse pas, et une troisième position dans laquelle la cheville est retirée du levier (6) ; et d'un élément rotatif (4) qui possède une partie de mise en prise (41), qui vient en prise avec la cheville (5) et peut placer la cheville (5) sélectivement dans différentes positions en fonction de la rotation de celui-ci. Lors de la fixation ou de la désolidarisation de la plaquette de coupe (2), la cheville (5) est placée dans la deuxième position.
PCT/JP2012/079861 2011-11-18 2012-11-16 Outil de coupe et élément rotatif pour mécanisme de serrage de plaquette de coupe utilisé dans ledit outil de coupe WO2013073690A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013544353A JP5660230B2 (ja) 2011-11-18 2012-11-16 切削工具及び該切削工具に用いられる切削インサートのクランプ機構のための回転部材

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011253170 2011-11-18
JP2011-253170 2011-11-18

Publications (1)

Publication Number Publication Date
WO2013073690A1 true WO2013073690A1 (fr) 2013-05-23

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PCT/JP2012/079861 WO2013073690A1 (fr) 2011-11-18 2012-11-16 Outil de coupe et élément rotatif pour mécanisme de serrage de plaquette de coupe utilisé dans ledit outil de coupe

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JP (1) JP5660230B2 (fr)
WO (1) WO2013073690A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110640170A (zh) * 2018-06-26 2020-01-03 南京梅山冶金发展有限公司 一种数控刀具
JP6838674B1 (ja) * 2020-05-29 2021-03-03 株式会社タンガロイ 切削工具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137381U (fr) * 1976-04-14 1977-10-18
JP2007223013A (ja) * 2006-02-27 2007-09-06 Kyocera Corp クランプ部材およびそれを具備した切削工具用ホルダ
JP2008207269A (ja) * 2007-02-26 2008-09-11 Kyocera Corp 切削工具及び切削方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316616A (en) * 1966-07-19 1967-05-02 Valeron Corp Elbow tilt pin retainer
BR112014002411B1 (pt) * 2011-08-02 2020-10-13 Iscar Ltd pastilha e ferramenta de corte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137381U (fr) * 1976-04-14 1977-10-18
JP2007223013A (ja) * 2006-02-27 2007-09-06 Kyocera Corp クランプ部材およびそれを具備した切削工具用ホルダ
JP2008207269A (ja) * 2007-02-26 2008-09-11 Kyocera Corp 切削工具及び切削方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110640170A (zh) * 2018-06-26 2020-01-03 南京梅山冶金发展有限公司 一种数控刀具
JP6838674B1 (ja) * 2020-05-29 2021-03-03 株式会社タンガロイ 切削工具
CN113732327A (zh) * 2020-05-29 2021-12-03 株式会社泰珂洛 切削工具
US11541463B2 (en) 2020-05-29 2023-01-03 Tungaloy Corporation Cutting tool
CN113732327B (zh) * 2020-05-29 2023-09-08 株式会社泰珂洛 切削工具

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