US3281920A - Metal cutting tool with an adjustable unit serving as chip breaker and clamp - Google Patents
Metal cutting tool with an adjustable unit serving as chip breaker and clamp Download PDFInfo
- Publication number
- US3281920A US3281920A US349994A US34999464A US3281920A US 3281920 A US3281920 A US 3281920A US 349994 A US349994 A US 349994A US 34999464 A US34999464 A US 34999464A US 3281920 A US3281920 A US 3281920A
- Authority
- US
- United States
- Prior art keywords
- holder
- bit
- unit
- chip breaker
- clamping
- 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.)
- Expired - Lifetime
Links
Images
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
- B23B27/1603—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 specially shaped plate-like exchangeable cutting inserts, e.g. chip-breaking groove
-
- 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
- B23B27/1625—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 of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane
- B23B27/1633—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 of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane in which the chip-breaking clamping member is adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/12—Side or flank surfaces
- B23B2200/128—Side or flank surfaces with one or more grooves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/11—Cutters, for shaping including chip breaker, guide or deflector detachable from tool and tool holder
- Y10T407/112—Adjustable relative to cutting edge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/11—Cutters, for shaping including chip breaker, guide or deflector detachable from tool and tool holder
- Y10T407/116—Attached to or integral with tool clamping jaw
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
Definitions
- This invention relates to a tool for metal cutting, preferably for use in a copying lathe, comprising a holder, a tip of cemented carbide, high-speed steel, ceramic material or the like detachably mounted on the holder, and
- a unit acting as chip breaker and clamp mounted above the tip which unit may consist of one or several parts.
- the invention is characterized in that the unit acting as chip breaker and clamp is adapted to be clamped detachably to an intermediate portion mounted movably on the holder and adapted to be secured thereto by a lock means, so that the chip breaker width is changed only by displacing the said intermediate portion.
- FIG. 1 shows a vertical section through the tool along the line II in FIG. 3,
- FIG. 2 shows a vertical section along the line IIII in FIG. 1, and
- FIG. 3 shows a horizontal view of the tool seen from a ove.
- the embodiment of the tool according to the drawing comprises a holder 1 whereon a tip 2 is clamped between a support plate or sole 3 fastened to the holder by a screw 4 and a unit acting as chip breaker and clamp, which unit in the embodiment shown comprises a clamping plate 6 with wear protections 7 welded thereon.
- a lateral clamp iron 5 is provided for rendering additional hold of the tip 2, thereby preventing the tip from being turned or drawn out by the cutting forces.
- the said clamping plate 6 has a symmetric shape allowing it to be turned when one of the wear protections 7 is worn out, and is adapted to be clamped detachably by a first stop screw 8 to an intermediate portion in the form of a cube 9 disposed movably in an inverted T-groove 10 in holder 1.
- the said cube 9 can be secured in groove 10 by a second stop screw 11 in that the flanges 9a of said cube (see FIG. 2) upon tightening of screw 11 are pressed against the upper surfaces of said T-groove.
- the chip breaker width B is adjusted by first loosening stop screw 8 which is provided with a catch ring or rider 12 for lifting the clamping plate 6. Thereafter stop screw 11 is loosened through one of the two holes 11a, so that the cube 9 together with clamping plate 6 can be displaced in the longitudinal direction of the T-gr0ove for the setting of B. Thereafter stop screw 11 is tightened, whereby the cube 9 is rigidly anchored in T-groove 10. Upon tightening stop screw 8 the tip 2 is secured between the clamping plate 6 and the sole 3, and at the same time the anchoring of cube 9 in T-groove 10 is increased.
- tip 2 can be exchanged or turned without disturbing the chip breaker width B.
- stop screw 8 whereby the clamping plate 6 follows along with the screw, due to the rider 12, thus forming an opening between clamping plate 6 and tip 2 whereby the latter is entirely released.
- the hole for the stop screw 8 in the clamping plate 6 and/ or the countersink of said hole may be placed such, that upon tightening the screw 8 the clamping plate is not only pressed against the contact surfaces 13 and 14 on the upper surface of the holder, but also in lateral direction against a support face 15.
- the chip breaker edge of the clamping plate 6 always assumes the same angular position in relation to cutting edge 16.
- the bottom of he T-groove 10 is provided with a recess 17.
- the clamping plate 6 may also be made without holes 11a. In this case, however, the plate must be lifted off for setting the chip breaker width. Furthermore, both the holder 1 and the cube 9 must be provided in this case with a suitable graduation, because the plate 6 acting as chip breaker is removed during the setting operation.
- the invention is not restricted to the embodiment described above, but may be varied within the scope of the following claims. It is, for example, possible to construct the unit acting as chip breaker and clamp in two parts, i.e. with a loose chip breaker clamped between a separate clamp and the tip. It further is possible to arrange an eccentric mechanism or another suitable mechanism for a positive control of the setting movement which in the embodiment shown is effected manually. The above described details may be exchanged against details of equivalent function.
- the stop screw 11, for example, for clamping the cube 9 can be replaced by another clamping means, such as a jaw means or the like.
- the unit 6, 7, for example may be made entirely of cemented carbide.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said bit; an intermediate member adjustably mounted on the holder and arranged between said unit and said holder in the direction of adjustment behind said bit; securing means connecting said unit with said intermediate member for releasably fastening said unit to said intermediate member; and lock means connecting said intermediate member with said holder for releasably clamping said intermediate member into locking abutment with said holder.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said bit; an intermediate member adjustably mounted on the holder and arranged between said unit and said holder 3.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said'bit; an intermediate member comprising nut means adjustably mounted on the holder and arranged between said unit and said holder in the direction of adjustment behind said bit; a slot of inverted T-shape in said holder for the adjustment of said nut means; securing means connecting said unit with said nut means for releasably fastening said unit to said nut means; and lock means connecting said nut means with said holder for releasably clamping said nut means to said holder.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said bit; an intermediate member comprising nut means adjustably mounted on the holder and arranged between said unit and said holder in the direction of adjustment behind said bit; a slot of inverted T-shape in said holder for the adjustment of said nut means; securing means connecting said unit with said nut means for releasably fastening said unit to said nut means; a set screw connecting said nut means with said holder adapted upon its tightening to press shoulders of said nut means into locking abutment with corresponding shoulders of said T- shaped slot; and a hole through said unit provided for loosening said set screw without the need for said unit to be lifted off.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said bit; an intermediate member comprising a nut means adjustably mounted on the holder and arranged between said unit and said holder in the direction of adjustment behind said bit; a slot of inverted T-shape in said holder for the adjustment of said nut means, said slot being a through slot; securing means connecting said unit with saidnut means for releasably fastening said unit to said nut means; and lock means connecting said nut means with said holder for releasably clamping said nut means to said holder.
- a cutting tool comprising: a tool holder; a prismatic cutting bit mounted detachably on said holder and having cutting edges provided at intersections between the top and bottom surfaces and the side surfaces of the bit; a unit acting as a chip breaker and clamping member for clamping the bit onto said holder and mounted above said bit, said unit being turnable so that different surfaces can act as a chip breaker; an intermediate member comprising nut means adjustably mounted on the holder and arranged between said unit and said holder in the direction of adjustment behind said bit; a slot of inverted T-shape in said holder for the adjustment of said nut means; securing means connecting said unit with said nut means for releasably fastening said unit to said nut means.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE257863 | 1963-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3281920A true US3281920A (en) | 1966-11-01 |
Family
ID=20260211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US349994A Expired - Lifetime US3281920A (en) | 1963-03-08 | 1964-03-06 | Metal cutting tool with an adjustable unit serving as chip breaker and clamp |
Country Status (4)
Country | Link |
---|---|
US (1) | US3281920A (de) |
CH (1) | CH436918A (de) |
DE (1) | DE1477299A1 (de) |
GB (1) | GB990619A (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705801A1 (de) * | 1976-02-13 | 1977-08-25 | Ugine Aciers | Spanformende klemmvorrichtung fuer schneidplatten |
US4529339A (en) * | 1982-03-30 | 1985-07-16 | Mitsubishi Kinzoku Kabushiki Kaisha | Cutter insert |
US5947648A (en) * | 1996-08-05 | 1999-09-07 | Iscar Ltd. | Toolholder assembly |
US6988858B2 (en) * | 2001-02-28 | 2006-01-24 | Kennametal Inc. | Oxidation-resistant cutting assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113372A (en) * | 1961-01-16 | 1963-12-10 | Wickman Ltd | Cutting tools for use in lathes or other machines |
US3124866A (en) * | 1964-03-17 | novkov |
-
1964
- 1964-03-05 CH CH286664A patent/CH436918A/de unknown
- 1964-03-06 US US349994A patent/US3281920A/en not_active Expired - Lifetime
- 1964-03-06 DE DE19641477299 patent/DE1477299A1/de active Pending
- 1964-03-06 GB GB9673/64A patent/GB990619A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124866A (en) * | 1964-03-17 | novkov | ||
US3113372A (en) * | 1961-01-16 | 1963-12-10 | Wickman Ltd | Cutting tools for use in lathes or other machines |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705801A1 (de) * | 1976-02-13 | 1977-08-25 | Ugine Aciers | Spanformende klemmvorrichtung fuer schneidplatten |
US4529339A (en) * | 1982-03-30 | 1985-07-16 | Mitsubishi Kinzoku Kabushiki Kaisha | Cutter insert |
US5947648A (en) * | 1996-08-05 | 1999-09-07 | Iscar Ltd. | Toolholder assembly |
US6988858B2 (en) * | 2001-02-28 | 2006-01-24 | Kennametal Inc. | Oxidation-resistant cutting assembly |
Also Published As
Publication number | Publication date |
---|---|
DE1477299A1 (de) | 1969-03-13 |
CH436918A (de) | 1967-05-31 |
GB990619A (en) | 1965-04-28 |
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