WO1996005009A1 - An indexable insert - Google Patents
An indexable insert Download PDFInfo
- Publication number
- WO1996005009A1 WO1996005009A1 PCT/US1995/008669 US9508669W WO9605009A1 WO 1996005009 A1 WO1996005009 A1 WO 1996005009A1 US 9508669 W US9508669 W US 9508669W WO 9605009 A1 WO9605009 A1 WO 9605009A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indexable insert
- top surface
- circular arc
- center line
- approximately
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/32—Chip breaking or chip evacuation
- B23B2200/321—Chip breaking or chip evacuation by chip breaking projections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Definitions
- the invention relates to an indexable insert having two parallel cutting edges formed on opposite sides of an indexable insert body at the same level, between which a top surface is provided with a chipbreaking structure formed by projections and recesses.
- Indexable inserts exist in various different basic forms and in numerous customized designs, which by dint of their geometry and composition are adapted for different purposes and materials to be machined.
- the invention makes available an indexable insert which is amenable to use in high performance applications while at the same time producing short, smooth and readily controlled chips at a lower power requirement.
- the mutually alternating projections and recesses of the chipbreaking structure define a continuous undulating line, the crests of such undulating line rising above the cutting edges and the troughs being below the cutting edges; in a section athwart the center line the top surface has extending inward from each cutting edge part, a descending top surface part, which rises toward the center line and merges with the chipbreaking structure.
- the chipbreaking structure is defined by a row of at least generally part-spherical chipbreaking bodies, said row being parallel to the cutting edges and being centered about the center line with concave chip guiding faces being formed between the said bodies.
- Figure 1 is a diagrammatic perspective representation of the indexable insert, whose top surface is indicated by intersecting grid lines.
- Figure 2 is a plan view of the indexable insert.
- Figure 3 is a sectional view taken on the line III in Figure 2.
- Figure 4 is a partially sectioned side elevation of one cutting edge of the indexable insert.
- the indexable insert illustrated in Figure 1 comprises an indexable insert body 10 of a generally rectangular block having a flat base surface, four side surfaces extending perpendicularly to such base surface and a top surface, which possesses inwardly descending top surface parts and a chipbreaking structure arranged along the center line M of the indexable insert body 10.
- Two cutting edges 12 and 14 are formed at the same level and are parallel to one another between the top surface and the two longer side surfaces.
- the chipbreaking structure comprises generally part-spherical projections 16 in a row centered on the center line M of the cover surface, such projections alternating with concave recesses.
- the projection 16 and the recesses 18, and as apparent from Figure 4 define a continuous undulating line, whose crests rise above the cutting edges 12 and 14 and whose troughs are lower than such cutting edges 12 and 14.
- the top surface respectively has, extending inward from a cutting edge part in the direction of the center line M, a descending top surface part 20, which, rising again toward the center line M, merges with the projections 16 and the recesses 18.
- the clearance angle at the side surface 10a is 0°.
- a rising cutting edge land 22 which has a negative rake angle ⁇ of approximately 15".
- the cutting edge land 22 is radiused to merge with a flat part of the descending top surface part 20.
- This radiused zone has a radius Ri of less than 1 mm, as for instance, 0.8 mm.
- the width b of the cutting edge land 22 is less than 1 mm and amounts to, for example, 0.6 mm.
- the flat part of the descending top surface 20 possesses a positive rake angle ⁇ of approximately 14°.
- the descending top surface part 20 merges here with a flat intermediate part 24, which is adjoined, in an inward direction toward the center line M, by a concavely rising part with a radius R5, which may be the same as the radius R5 and, for example, amounts to 8 mm.
- This concavely ascending part finally runs into a convex apical part, whose radius R 6 of curvature is somewhat less than the radius R4 of curvature and, for instance, amounts to 6 mm.
- the flat intermediate part 24 of the top surface is approximately half way up in relation to the common plane of the cutting edges 12 and 14.
- the apical point S of the projection 16 extends by an amount h past the level of the cutting edges 12 and 14; this amount h is equal to approximately 1/3 (33%) of the amount 5, by which the lowest point T is lower than the height of the cutting edges 12 and 14.
- This amount t is equal to, for example, 1.5 mm so that h is equal to approximately 0.5 mm.
- the crest of the convex part of the recesses 18 is generally at the crest of the convex part of the recesses 18 is generally at the same level as the flat intermediate part 24.
- the undulating line indicated in Figure 4 which is defined by the projections 16 and the recesses 18 along the center line M, consists of alternating convex circular arc sections with a radius R7 of, for instance, 5.5 mm and concave circular arc sections with a somewhat smaller radius RQ of approximately 5 mm.
- Figure 4 will be seen to indicate one of several threaded holes 26, which extend perpendicularly through the base surface of the indexable insert body 10 and serve for attachment of the indexable insert on a cutting tool.
- the indexable insert is manufactured from conventional sintered carbide material. It is suitable for use in high performance applications.
- the projections 16 act as chipbreaking bodies, which in conjunction with the recesses 18 placed in between, serve to ensure the production of short, smooth chips without furrows and marginal tears. All in all, the flow of chips may be readily controlled.
- the chipbreaking structure does not involve providing additional drive power and, owing to the even flow of chips, the indexable insert has a long working life.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Cable Accessories (AREA)
- Food-Manufacturing Devices (AREA)
- Road Signs Or Road Markings (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/727,622 US5788427A (en) | 1994-08-11 | 1995-07-12 | Indexable insert |
CA002184722A CA2184722C (en) | 1994-08-11 | 1995-07-12 | An indexable insert |
EP95926239A EP0775032B1 (en) | 1994-08-11 | 1995-07-12 | An indexable insert |
JP8507313A JP2865877B2 (en) | 1994-08-11 | 1995-07-12 | Indexable insert |
DE69502106T DE69502106T2 (en) | 1994-08-11 | 1995-07-12 | A REVERSE INSERT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4428514.0 | 1994-08-11 | ||
DE4428514A DE4428514A1 (en) | 1994-08-11 | 1994-08-11 | Indexable insert |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996005009A1 true WO1996005009A1 (en) | 1996-02-22 |
Family
ID=6525486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/008669 WO1996005009A1 (en) | 1994-08-11 | 1995-07-12 | An indexable insert |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0775032B1 (en) |
JP (1) | JP2865877B2 (en) |
AT (1) | ATE165032T1 (en) |
CA (1) | CA2184722C (en) |
DE (2) | DE4428514A1 (en) |
ES (1) | ES2116097T3 (en) |
WO (1) | WO1996005009A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002254214A (en) * | 2001-02-27 | 2002-09-10 | Mitsubishi Materials Corp | Throwaway tip |
SE523617C2 (en) * | 2001-10-01 | 2004-05-04 | Sandvik Ab | Cuts for chip separating machining with chip breaking geometry |
SE523620C2 (en) * | 2001-10-01 | 2004-05-04 | Sandvik Ab | Cut for chip separating machining with surface wiping egg segments. |
DE10346790A1 (en) * | 2003-10-08 | 2005-05-04 | Kennametal Widia Gmbh & Co Kg | cutting insert |
DE202006018992U1 (en) | 2006-12-16 | 2007-04-05 | Kennametal Inc. | Cutting insert for processing one-sided cover surface, has chip-shaped units formed at wall sections and arranged at same distance to one another, where chip-shaped units have roof area and flanks that are inclined to chip-shaped base |
DE102010026947B3 (en) | 2010-07-12 | 2011-12-08 | Gottfried Wilhelm Leibniz Universität Hannover | Drilling tool, use of this drilling tool and drilling method performed with the drilling tool |
DE102013114124A1 (en) * | 2013-12-16 | 2015-06-18 | Hegenscheidt-Mfd Gmbh & Co. Kg | Cutting insert for profile turning and cassette for holding a cutting insert |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4214846A (en) * | 1978-09-26 | 1980-07-29 | Fansteel Inc. | Heavy duty insert |
EP0143758A1 (en) * | 1983-10-31 | 1985-06-05 | Seco Tools Ab | Cutting insert |
-
1994
- 1994-08-11 DE DE4428514A patent/DE4428514A1/en not_active Ceased
-
1995
- 1995-07-12 CA CA002184722A patent/CA2184722C/en not_active Expired - Fee Related
- 1995-07-12 DE DE69502106T patent/DE69502106T2/en not_active Expired - Fee Related
- 1995-07-12 EP EP95926239A patent/EP0775032B1/en not_active Expired - Lifetime
- 1995-07-12 ES ES95926239T patent/ES2116097T3/en not_active Expired - Lifetime
- 1995-07-12 WO PCT/US1995/008669 patent/WO1996005009A1/en active IP Right Grant
- 1995-07-12 JP JP8507313A patent/JP2865877B2/en not_active Expired - Lifetime
- 1995-07-12 AT AT95926239T patent/ATE165032T1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4214846A (en) * | 1978-09-26 | 1980-07-29 | Fansteel Inc. | Heavy duty insert |
EP0143758A1 (en) * | 1983-10-31 | 1985-06-05 | Seco Tools Ab | Cutting insert |
Also Published As
Publication number | Publication date |
---|---|
DE69502106T2 (en) | 1998-10-22 |
JP2865877B2 (en) | 1999-03-08 |
CA2184722A1 (en) | 1996-02-22 |
ATE165032T1 (en) | 1998-05-15 |
EP0775032A1 (en) | 1997-05-28 |
EP0775032B1 (en) | 1998-04-15 |
ES2116097T3 (en) | 1998-07-01 |
DE4428514A1 (en) | 1996-02-22 |
DE69502106D1 (en) | 1998-05-20 |
CA2184722C (en) | 1999-09-07 |
JPH10500909A (en) | 1998-01-27 |
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