JPH04112705U - Throwaway tool for cutting off - Google Patents
Throwaway tool for cutting offInfo
- Publication number
- JPH04112705U JPH04112705U JP1761091U JP1761091U JPH04112705U JP H04112705 U JPH04112705 U JP H04112705U JP 1761091 U JP1761091 U JP 1761091U JP 1761091 U JP1761091 U JP 1761091U JP H04112705 U JPH04112705 U JP H04112705U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- chip
- mounting seat
- holder
- cutting
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000003754 machining Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
(57)【要約】
【目的】 チップ刃先の芯高さを高精度に保ち、切削精
度を高めるとともに、チップ取付座の破損を防ぐ。ま
た、工具加工精度のばらつきによりチップ取付座による
チップ固定力が小さい場合にも、チップの脱落を防止す
る。
【構成】 ホルダと、このホルダの先端に形成されたチ
ップ取付座と、チップ取付座の内部に着脱可能にはめ込
まれたチップとを具備し、チップ取付座はその中心線と
ホルダ長手方向とのなす角が６０゜以上に設定されると
ともに、チップ取付座のホルダ先端側の端部は切り欠か
れてストッパ部とされ、さらにチップにはこのストッパ
部と当接する係合突部が形成されている。
(57) [Summary] [Purpose] To maintain the center height of the tip edge with high accuracy, improve cutting accuracy, and prevent damage to the tip mounting seat. Further, even if the chip fixing force by the chip mounting seat is small due to variations in tool machining accuracy, the chip is prevented from falling off. [Structure] It is equipped with a holder, a chip mounting seat formed at the tip of the holder, and a chip removably fitted inside the chip mounting seat. The angle formed by the tip is set to 60° or more, and the end of the tip mounting seat on the holder tip side is cut out to form a stopper portion, and the tip is further formed with an engaging protrusion that comes into contact with the stopper portion. There is.
Description
【０００１】0001
本考案は、鋼や鋳鉄等の被削材を着脱可能なチップにより突切り加工するスロ ーアウェイ工具に係わり、特にチップの脱落を防ぐとともに刃先の位置決め精度 を高めるための改良に関する。 This invention is a slot machine that cuts off workpiece materials such as steel and cast iron using a removable tip. - Related to away tools, especially preventing chips from falling off and positioning accuracy of the cutting edge. Regarding improvements to increase
【０００２】0002
図５および図６は、従来の突切り用スローアウェイ工具の一例を示す側面図お よび正面図である。 Figures 5 and 6 are side views and diagrams showing an example of a conventional indexable parting tool. and a front view.
【０００３】 図中符号１は矩形板状のホルダ、２はホルダ１の先端に形成されたチップ取付 座、３はこのチップ取付座２の内部にはめ込まれたチップである。チップ取付座 ２の奥には円弧状の盗み４が形成されるとともに、チップ取付座２の両側壁面に はそれぞれ断面Ｖ字状の突条部５が形成されている。また、チップ３の各突条部 ５と対応する両側面には、それぞれ突条部５がはまるＶ字状の溝６が形成されて いる。なお、従来品においては、チップ取付座２の楔角αは通常８〜１２゜程度 、チップ中心線と突切方向のなす角βは３５゜以下に設定されている。0003 In the figure, numeral 1 is a rectangular plate-shaped holder, and 2 is a chip attachment formed at the tip of holder 1. A seat 3 is a chip fitted inside this chip mounting seat 2. Chip mounting seat An arc-shaped groove 4 is formed at the back of the chip mounting seat 2, and a groove 4 is formed on both sides of the chip mounting seat 2. Each of the protrusions 5 has a V-shaped cross section. In addition, each protrusion of the chip 3 V-shaped grooves 6 into which the protrusions 5 fit are formed on both side surfaces corresponding to the grooves 5. There is. In addition, in conventional products, the wedge angle α of the chip mounting seat 2 is usually about 8 to 12 degrees. The angle β between the chip center line and the parting direction is set to 35° or less.
【０００４】 この突切り用スローアウェイ工具では、被削材Ｗを回転させつつホルダ１を被 削材Ｗに向けて送ることにより、チップ３の刃先３Ａを被削材Ｗに切り込ませて いき、被削材Ｗの外周面に溝等を形成する。その際、チップ３は切削力によりチ ップ取付座２の奥に沈み、チップ取付座２が弾性変型してチップ３を強固にクラ ンプする。0004 In this throw-away tool for parting, the holder 1 is rotated while the workpiece W is being rotated. By sending it toward the workpiece W, the cutting edge 3A of the tip 3 cuts into the workpiece W. Then, grooves and the like are formed on the outer circumferential surface of the workpiece W. At this time, the chip 3 is chipped by the cutting force. The chip mount sinks into the depths of the chip mount 2, and the chip mount 2 elastically deforms to firmly clamp the chip 3. sample.
【０００５】[0005]
しかしながら、上記の突切り用スローアウェイ工具では、切削力の大きさによ りチップ３の沈み量が変化するため、図６に示す芯高さｈが安定せず、その分切 削精度が低下する。また、チップ３に過大な切削力がかかった場合には、楔角α が開いてチップ取付座２が破損することがあった。 However, with the above-mentioned indexable parting tools, the amount of cutting force Since the sinking amount of the tip 3 changes, the center height h shown in Fig. 6 is not stable, and the cutting Cutting accuracy decreases. In addition, if excessive cutting force is applied to the insert 3, the wedge angle α could open and damage the chip mounting seat 2.
【０００６】 そこで、これらの問題を解決するため、図７および図８に示すような構造が既 に提案されている。図７に示す例では、チップ取付座２のホルダ後端側の開口端 が切り欠かれ、突切方向に対してほぼ垂直なストッパ面７が形成されるとともに 、チップ３にはこのストッパ面７に当接する突出部８が形成されている。また、 図８に示す例では、チップ取付座２の奥にチップ３の後端を支持するストッパ部 ９が形成される一方、チップ３の後端にそれと係合する係合部１０が形成されて いる。[0006] Therefore, in order to solve these problems, the structures shown in Figures 7 and 8 have already been developed. has been proposed. In the example shown in FIG. 7, the open end of the chip mounting seat 2 on the rear end side of the holder is cut out to form a stopper surface 7 that is substantially perpendicular to the parting direction. A protrusion 8 is formed on the chip 3 and comes into contact with the stopper surface 7. Also, In the example shown in FIG. 9 is formed, and an engaging part 10 is formed at the rear end of the chip 3 to engage with it. There is.
【０００７】 ところが、図７または図８に示す構造では、工具の加工精度のばらつきにより 、チップ３がチップ取付座２内に十分沈み込無まぬうちに、ストッパ７，９がチ ップ３に当たって十分なクランプ力が得られないことがあり、溝入れ切削後、チ ップ３が被削材Ｗに挟まれ、ホルダ１から抜け落ちる等の支障が生じることがあ った。[0007] However, in the structure shown in Fig. 7 or 8, due to variations in machining accuracy of the tool, , the stoppers 7 and 9 will stop before the chip 3 has fully sunk into the chip mounting seat 2. It may not be possible to obtain sufficient clamping force when the chip hits the tip 3. Otherwise, the tip 3 may get caught between the workpiece W and fall off from the holder 1. It was.
【０００８】[0008]
本考案は上記課題を解決するためになされたもので、ホルダと、このホルダの 先端に形成されたチップ取付座と、チップ取付座の内部に着脱可能にはめ込まれ たチップとを具備する突切り用スローアウェイ工具において、チップ取付座はそ の中心線とホルダ長手方向とのなす角が６０゜以上に設定されるとともに、チッ プ取付座のホルダ先端側の端部は切り欠かれてストッパ部とされ、さらに前記チ ップにはこのストッパ部と当接する係合突部が形成されていることを特徴とする This invention was devised to solve the above problems, and includes a holder and a A chip mounting seat is formed at the tip, and a chip is removably fitted inside the chip mounting seat. In indexable cut-off tools equipped with a tip, the tip mounting seat is The angle between the center line of the holder and the longitudinal direction of the holder is set to 60° or more, and the tip The end of the tip of the tip of the holder is cut out to serve as a stopper, and The stopper is characterized in that an engaging protrusion that comes into contact with the stopper is formed on the stopper.
【０００９】[0009]
本考案の突切り用スローアウェイ工具によれば、チップ取付座のホルダ先端側 の端部を切り欠いたストッパ部に、チップの刃先直下に形成された係合突部を当 接させてチップの位置決めを行っているため、チップ刃先にかかる切削力の大部 分がこのストッパ部で受けとめられる。したがって、チップ刃先の芯高さが高精 度に保たれ、高い切削精度が得られるうえ、チップが沈みすぎてチップ取付座を 破損させるおそれがない。 According to the indexable cut-off tool of the present invention, the holder tip side of the insert mounting seat Attach the engagement protrusion formed just below the cutting edge of the tip to the stopper section cut out at the end of the tip. Since the insert is positioned in contact with the insert, most of the cutting force applied to the insert edge is minute is received by this stopper part. Therefore, the center height of the tip edge is high precision. In addition to maintaining high cutting accuracy, the insert sinks too much and the insert mounting seat is removed. There is no risk of damage.
【００１０】 また、工具の加工精度のばらつきにより、チップ取付座によるチップ固定力が 小さい場合にも、チップ取付座の中心線すなわちチップ離脱方向が、ホルダ長手 方向すなわちホルダを後退させた際にチップを引き抜こうとする力の向きに対し て６０゜以上に設定されているから、ホルダ後退時に生じるチップ引抜力をチッ プ取付座の側壁面で支持して、チップの脱落を防止することができる。0010 In addition, due to variations in tool machining accuracy, the chip fixing force of the chip mounting seat may be reduced. Even if the chip is small, the center line of the chip mounting seat, that is, the chip removal direction, should be aligned with the longitudinal direction of the holder. direction, that is, the direction of the force that tries to pull out the chip when the holder is retreated. Since the tip is set at 60° or more, the tip pulling force generated when the holder retreats is reduced. The chip can be supported by the side wall surface of the chip mounting seat to prevent the chip from falling off.
【００１１】[0011]
図１は本考案に係わる突切り用スローアウェイ工具の一実施例を示す側面図で ある。図中符号１１は矩形板状のホルダであり、このホルダ１１は図中左右方向 に長く、その右端部（後端部）が図示しない切削盤に固定される。ホルダ１１の 先端部には、上下方向に向けて矩形状のチップ取付座１２が形成され、このチッ プ取付座１２内にはスローアウェイチップ１３が着脱可能にはめ込まれている。 FIG. 1 is a side view showing an embodiment of an indexable cut-off tool according to the present invention. be. Reference numeral 11 in the figure is a rectangular plate-shaped holder, and this holder 11 is arranged in the left and right direction in the figure. The right end (rear end) is fixed to a cutting machine (not shown). of holder 11 A rectangular chip mounting seat 12 is formed at the tip in the vertical direction. A throw-away tip 13 is removably fitted into the pull mounting seat 12.
【００１２】 チップ取付座１２の奥には、チップ取付座１２の中心線Ｏを挟んで対称に、一 対の円弧状をなす盗み１４が形成されている。また、チップ取付座１２の両側壁 面には、それぞれ断面Ｖ字状の突条１５が形成されるとともに、チップ１３のこ れら突条１５と対応する側壁面には、突条１５と嵌合する断面Ｖ字状の溝１６が 形成されている。0012 At the back of the chip mounting seat 12 are arranged symmetrically across the center line O of the chip mounting seat 12. A pair of arc-shaped gaps 14 are formed. In addition, both side walls of the chip mounting seat 12 Projections 15 each having a V-shaped cross section are formed on the surface, and the tip 13 is A groove 16 having a V-shaped cross section that fits with the protrusion 15 is provided on the side wall surface corresponding to the protrusion 15. It is formed.
【００１３】 チップ取付座１２の中心線Ｏと、ホルダ長手方向（すなわち工具送り方向）と がなす角度βは６０゜以上、好ましくは９０゜前後に設定されている。６０゜未 満では工具後退時にチップ１３が抜け落ちるおそれが大きくなる。また、チップ 取付座１２の楔角αは適正なクランプ力を得るために、８〜１２゜程度が好まし い。[0013] The center line O of the chip mounting seat 12 and the longitudinal direction of the holder (i.e. tool feeding direction) The angle β formed by the two is set at 60° or more, preferably around 90°. Less than 60° If it is full, there is a high possibility that the chip 13 will fall off when the tool is retracted. Also, chips The wedge angle α of the mounting seat 12 is preferably about 8 to 12 degrees in order to obtain an appropriate clamping force. stomach.
【００１４】 また、この実施例では、ストッパ部１７の幅がチップ１３の超硬合金片１３Ｂ の幅より若干小さめとされている。ストッパ部１７の端面には図２に示すように 断面Ｖ字状の突条１８が形成されている。[0014] Further, in this embodiment, the width of the stopper portion 17 is the width of the cemented carbide piece 13B of the tip 13. It is said to be slightly smaller than the width of As shown in FIG. 2, the end face of the stopper part 17 is A protrusion 18 having a V-shaped cross section is formed.
【００１５】 一方、チップ１３のストッパ部１７と対応する部分には、矩形状の係合突部１ ９が形成され、この係合突部１９の直上に前記超硬合金片１３Ｂが固定されると ともに、この係合突部１９の対向面には突条１８と嵌合する断面Ｖ字状の溝２０ が形成されている。[0015] On the other hand, a rectangular engagement protrusion 1 is provided in a portion of the chip 13 corresponding to the stopper portion 17. 9 is formed, and the cemented carbide piece 13B is fixed directly above the engaging protrusion 19. In both cases, a groove 20 having a V-shaped cross section and fitting into the protrusion 18 is provided on the opposing surface of the engagement protrusion 19. is formed.
【００１６】 上記構成からなる突切り用スローアウェイ工具によれば、チップ取付座１２の ホルダ先端側の端部を切り欠いてなるストッパ部１７に、チップ３の刃先直下に 形成された係合突部１９を当接させてチップ１３の位置決めを行っているため、 チップ刃先１３Ａにかかる切削力の大部分がこのストッパ部１７で受けとめられ る。したがって、チップ刃先１３Ａの芯高さｈが高精度に保たれ、高い切削精度 が得られるうえ、チップ１３が沈みすぎてチップ取付座１２を破損させるおそれ がない。[0016] According to the indexable cut-off tool having the above configuration, the tip mounting seat 12 A stopper portion 17 formed by cutting out the end of the tip of the holder is provided with a stopper portion 17 just below the cutting edge of the tip 3. Since the chip 13 is positioned by abutting the formed engagement protrusion 19, Most of the cutting force applied to the tip edge 13A is received by this stopper portion 17. Ru. Therefore, the center height h of the tip cutting edge 13A is maintained at high accuracy, resulting in high cutting accuracy. In addition, there is a risk that the tip 13 will sink too much and damage the tip mounting seat 12. There is no.
【００１７】 また、工具の加工精度のばらつきにより、チップ取付座１２によるチップ固定 力が小さい場合にも、チップ取付座１２の中心線Ｏすなわちチップ離脱方向が、 ホルダ長手方向すなわちホルダ１１を後退させた際にチップ１３にかかる引き抜 き力の向きに対して６０゜以上に設定されているから、チップ引抜力をチップ取 付座１２の側壁面で支持して、チップ１３の脱落を防止することができる。[0017] In addition, due to variations in machining accuracy of tools, the chip may be fixed by the chip mounting seat 12. Even when the force is small, the center line O of the chip mounting seat 12, that is, the chip removal direction, Pulling out on the tip 13 in the longitudinal direction of the holder, that is, when the holder 11 is retracted The chip removal force is set at 60° or more relative to the direction of the force, so the chip removal force is By supporting the side wall surface of the seat 12, the chip 13 can be prevented from falling off.
【００１８】 なお、本考案は上記実施例に限定されるものではなく、必要に応じて適宜構成 を変更してよい。例えば、ストッパ部１７の端面に突条１８を形成する代わりに 、図３に示すように溝を形成したり、あるいは図４に示すように平坦にすること も可能である。また、チップ取付座１２の奥にチップ１３の後端部に当接する別 のストッパ部を形成してもよい。[0018] Note that the present invention is not limited to the above embodiments, and can be configured as appropriate. may be changed. For example, instead of forming the protrusion 18 on the end surface of the stopper part 17, , forming grooves as shown in Figure 3 or flattening as shown in Figure 4. is also possible. In addition, there is a separate plate located at the back of the chip mounting seat 12 that abuts the rear end of the chip 13. A stopper portion may be formed.
【００１９】[0019]
【考案の効果】 以上説明したように、本考案に係わる突切り用スローアウェイ工具によれば、 チップ取付座のホルダ先端側の端部を切り欠いたストッパ部に、チップの刃先直 下に形成された係合突部を当接させてチップの位置決めを行っているため、チッ プ刃先にかかる切削力の大部分がこのストッパ部で受けとめられる。したがって 、チップ刃先の芯高さが高精度に保たれ、高い切削精度が得られるうえ、チップ が沈みすぎてチップ取付座を破損させるおそれがない。[Effect of the idea] As explained above, according to the indexable cut-off tool according to the present invention, Insert the cutting edge of the tip into the stopper that is cut out on the tip end of the holder of the tip mounting seat. The chip is positioned by making contact with the engagement protrusion formed below, so the chip Most of the cutting force applied to the cutting edge is received by this stopper. therefore , the center height of the tip of the tip is maintained at high accuracy, achieving high cutting accuracy, and the tip There is no risk of sinking too much and damaging the chip mounting seat.
【００２０】 また、工具の加工精度のばらつきにより、チップ取付座によるチップ固定力が 小さい場合にも、チップ取付座の中心線すなわちチップ離脱方向が、ホルダ長手 方向すなわちホルダを後退させた際にチップを引き抜こうとする力の向きに対し て６０゜以上に設定されているから、ホルダ後退時に生じるチップ引抜力をチッ プ取付座の側壁面で支持して、チップの脱落を防止することができる。[0020] In addition, due to variations in tool machining accuracy, the chip fixing force of the chip mounting seat may be reduced. Even if the chip is small, the center line of the chip mounting seat, that is, the chip removal direction, should be aligned with the longitudinal direction of the holder. direction, that is, the direction of the force that tries to pull out the chip when the holder is retreated. Since the tip is set at 60° or more, the tip pulling force generated when the holder retreats is reduced. The chip can be supported by the side wall surface of the chip mounting seat to prevent the chip from falling off.
【図１】本考案に係わる突切り用スローアウェイ工具の
一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of an indexable cut-off tool according to the present invention.
【図２】同工具のストッパ部の断面図である。FIG. 2 is a sectional view of a stopper portion of the same tool.
【図３】同工具のストッパ部の変型例を示す断面図であ
る。FIG. 3 is a sectional view showing a modification of the stopper portion of the same tool.
【図４】同工具のストッパ部の変型例を示す断面図であ
る。FIG. 4 is a sectional view showing a modification of the stopper portion of the same tool.
【図５】従来の突切り用スローアウェイ工具を示す側面
図である。FIG. 5 is a side view showing a conventional throw-away cutting tool.
【図６】同工具の正面図である。FIG. 6 is a front view of the same tool.
【図７】従来の別の突切り用スローアウェイ工具を示す
側面図である。FIG. 7 is a side view showing another conventional cutting-off indexable tool.
【図８】従来の別の突切り用スローアウェイ工具を示す
側面図である。FIG. 8 is a side view showing another conventional cutting-off indexable tool.
１１ ホルダ １２ チップ取付座 １３ スローアウェイチップ １３Ａ 刃先 １３Ｂ 超硬合金片 １４ 盗み １７ ストッパ部 １９ 係合突部 Ｏ チップ取付座の中心線 β チップ取付座中心線とホルダ長手方向のなす角 11 Holder 12 Chip mounting seat 13 Throwaway tip 13A cutting edge 13B Cemented carbide piece 14 Stealing 17 Stopper part 19 Engagement protrusion O Center line of chip mounting seat β Angle between the center line of the chip mounting seat and the longitudinal direction of the holder
Claims (1)
たチップ取付座と、チップ取付座の内部に着脱可能には
め込まれたチップとを具備する突切り用スローアウェイ
工具において、前記チップ取付座はその中心線とホルダ
長手方向とのなす角が６０゜以上に設定されるととも
に、チップ取付座のホルダ先端側の端部は切り欠かれて
ストッパ部とされ、さらに前記チップにはこのストッパ
部と当接する係合突部が形成されていることを特徴とす
る突切り用スローアウェイ工具。1. An indexable cut-off tool comprising: a holder; a tip mounting seat formed at the tip of the holder; and a tip removably fitted into the tip mounting seat; The angle between the center line and the longitudinal direction of the holder is set to be 60° or more, and the end of the tip mounting seat on the holder tip side is cut out to form a stopper portion, and the tip also has this stopper portion. A throw-away tool for cutting off, characterized in that an engaging protrusion that comes into contact with is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1761091U JPH04112705U (en) | 1991-03-22 | 1991-03-22 | Throwaway tool for cutting off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1761091U JPH04112705U (en) | 1991-03-22 | 1991-03-22 | Throwaway tool for cutting off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04112705U true JPH04112705U (en) | 1992-09-30 |
Family
ID=31904349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1761091U Pending JPH04112705U (en) | 1991-03-22 | 1991-03-22 | Throwaway tool for cutting off |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04112705U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015029009A1 (en) * | 2013-08-27 | 2015-03-05 | Iscar Ltd. | Hard metal cutting tool holder blade and cutting tool having such holder blade |
| JP2019521862A (en) * | 2016-06-20 | 2019-08-08 | イスカル リミテッド | Cutting tool and cutting insert with deep blind opening |
| EP3797909A1 (en) * | 2015-11-30 | 2021-03-31 | Iscar Ltd. | Cutting insert |
-
1991
- 1991-03-22 JP JP1761091U patent/JPH04112705U/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015029009A1 (en) * | 2013-08-27 | 2015-03-05 | Iscar Ltd. | Hard metal cutting tool holder blade and cutting tool having such holder blade |
| CN105473260A (en) * | 2013-08-27 | 2016-04-06 | 伊斯卡有限公司 | Hard metal cutting tool holder blade and cutting tool having such holder blade |
| KR20160045700A (en) * | 2013-08-27 | 2016-04-27 | 이스카 엘티디. | Hard metal cutting tool holder blade and cutting tool having such holder blade |
| US9403214B2 (en) | 2013-08-27 | 2016-08-02 | Iscar, Ltd. | Hard metal cutting tool holder blade and cutting tool having such holder blade |
| JP2016529125A (en) * | 2013-08-27 | 2016-09-23 | イスカル リミテッド | Hard alloy cutting tool holder blade and cutting tool having such a holder blade |
| EP3797909A1 (en) * | 2015-11-30 | 2021-03-31 | Iscar Ltd. | Cutting insert |
| JP2019521862A (en) * | 2016-06-20 | 2019-08-08 | イスカル リミテッド | Cutting tool and cutting insert with deep blind opening |
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