SE8007945L - SELF-BORING SCREW - Google Patents
SELF-BORING SCREWInfo
- Publication number
- SE8007945L SE8007945L SE8007945A SE8007945A SE8007945L SE 8007945 L SE8007945 L SE 8007945L SE 8007945 A SE8007945 A SE 8007945A SE 8007945 A SE8007945 A SE 8007945A SE 8007945 L SE8007945 L SE 8007945L
- Authority
- SE
- Sweden
- Prior art keywords
- flutes
- self
- screw
- heels
- flute
- Prior art date
Links
- 238000003801 milling Methods 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
-
- 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
- B23C5/12—Cutters specially designed for producing particular profiles
- B23C5/14—Cutters specially designed for producing particular profiles essentially comprising curves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
Abstract
A self-drilling and self-tapping screw has a compound flute configuration. Each flute (16, 18) has, in cross-section, a straight portion (28, 30) including at least part of the cutting edge and a curved portion (32, 34) defining the drag edge. The screw has a convex point configuration produced by a profiled toothed milling cutter (66) having uniformly radiused heels or, alternatively, heels which are formed by two planar surfaces (62, 64) intersecting to enclose an obtuse angle less than 180 DEG . Fluting milling cutters are introduced by movement not radial to produce the straight portions of the flutes the flutes being at an angle to the screw axis. Special milling cutters with arcuate portions and ribs formed by teeth produce chip breaking grooves int the flutes. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9746079A | 1979-11-26 | 1979-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE8007945L true SE8007945L (en) | 1981-05-27 |
Family
ID=22263470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8007945A SE8007945L (en) | 1979-11-26 | 1980-11-12 | SELF-BORING SCREW |
Country Status (24)
| Country | Link |
|---|---|
| JP (1) | JPS5686217A (en) |
| AR (1) | AR224552A1 (en) |
| AT (1) | AT380733B (en) |
| AU (1) | AU539311B2 (en) |
| BE (1) | BE886331A (en) |
| BR (1) | BR8007606A (en) |
| CA (1) | CA1175688A (en) |
| CH (1) | CH640318A5 (en) |
| DE (1) | DE3044001A1 (en) |
| DK (1) | DK151590C (en) |
| ES (1) | ES263215Y (en) |
| FI (1) | FI77094C (en) |
| FR (1) | FR2470281B1 (en) |
| GB (3) | GB2063731B (en) |
| IE (1) | IE51184B1 (en) |
| IT (1) | IT1134443B (en) |
| LU (1) | LU82954A1 (en) |
| MX (2) | MX171209B (en) |
| NL (1) | NL8006295A (en) |
| NO (1) | NO158554C (en) |
| NZ (1) | NZ195635A (en) |
| PT (1) | PT72081B (en) |
| SE (1) | SE8007945L (en) |
| ZA (1) | ZA806860B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565475A (en) * | 1979-11-26 | 1986-01-21 | Illinois Tool Works Inc. | Drill point milling machine and method |
| GB2100628B (en) * | 1981-06-25 | 1985-04-11 | Shinjo Seisakusho Yk | A drill screw |
| US4395173A (en) * | 1981-06-30 | 1983-07-26 | Illinois Tool Works Inc. | Drill screw with protective burrs |
| JP2865823B2 (en) * | 1990-07-23 | 1999-03-08 | 国分化学工業株式会社 | Drill screw |
| CH686637A5 (en) * | 1992-06-18 | 1996-05-15 | Mungo Befestigungstech Ag | Schraubhulse. |
| DE102016222937A1 (en) | 2016-11-21 | 2018-05-24 | Swg Schraubenwerk Gaisbach Gmbh | Wood screw and method of making a wood screw |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1294268A (en) * | 1915-08-26 | 1919-02-11 | Edward C Holmes | Screw-spike. |
| US2479730A (en) * | 1944-05-10 | 1949-08-23 | Lockheed Aircraft Corp | Screw |
| GB788745A (en) * | 1955-05-18 | 1958-01-08 | Ronald Fredrick Cox | Improved twist drill |
| GB911025A (en) * | 1959-10-30 | 1962-11-21 | Gunther Claas | Method for the production of cutting tools |
| US3463045A (en) * | 1966-05-10 | 1969-08-26 | Illinois Tool Works | Drilling screw |
| GB1283834A (en) * | 1970-04-23 | 1972-08-02 | Le Metallichesky Zd Im Xxii Si | Milling cutters |
| US3789725A (en) * | 1971-10-06 | 1974-02-05 | B Lindstrom | Self-drilling and self-tapping fastener and method of manufacture thereof |
| US3786713A (en) * | 1971-10-15 | 1974-01-22 | Illinois Tool Works | Chip breaker drill screw |
| FR2174350A5 (en) * | 1972-02-29 | 1973-10-12 | Gresset Andre | |
| US3933075A (en) * | 1973-08-08 | 1976-01-20 | Elco Industries, Inc. | Self-drilling fastener and method of making same |
| GB1574126A (en) * | 1977-02-21 | 1980-09-03 | Grinding Aids Ltd | Cutting tool for a mchine tool |
| US4147088A (en) * | 1977-03-16 | 1979-04-03 | Nl Industries, Inc. | Drill screw |
| JPS61567Y2 (en) * | 1978-01-18 | 1986-01-10 | ||
| JPS6128886Y2 (en) * | 1978-02-20 | 1986-08-27 | ||
| US4295768A (en) * | 1979-09-21 | 1981-10-20 | Usm Corporation | Chip breaker screws |
-
1980
- 1980-11-04 CA CA000363978A patent/CA1175688A/en not_active Expired
- 1980-11-06 ZA ZA00806860A patent/ZA806860B/en unknown
- 1980-11-10 AU AU64220/80A patent/AU539311B2/en not_active Ceased
- 1980-11-12 SE SE8007945A patent/SE8007945L/en unknown
- 1980-11-17 MX MX203144A patent/MX171209B/en unknown
- 1980-11-17 MX MX184800A patent/MX152777A/en unknown
- 1980-11-18 NL NL8006295A patent/NL8006295A/en not_active Application Discontinuation
- 1980-11-20 FR FR8024643A patent/FR2470281B1/en not_active Expired
- 1980-11-20 PT PT72081A patent/PT72081B/en not_active IP Right Cessation
- 1980-11-20 DE DE19803044001 patent/DE3044001A1/en active Granted
- 1980-11-21 BR BR8007606A patent/BR8007606A/en not_active IP Right Cessation
- 1980-11-24 AT AT0572880A patent/AT380733B/en not_active IP Right Cessation
- 1980-11-25 NO NO803548A patent/NO158554C/en unknown
- 1980-11-25 ES ES1980263215U patent/ES263215Y/en not_active Expired
- 1980-11-25 CH CH871880A patent/CH640318A5/en not_active IP Right Cessation
- 1980-11-25 IE IE2443/80A patent/IE51184B1/en not_active IP Right Cessation
- 1980-11-25 FI FI803666A patent/FI77094C/en not_active IP Right Cessation
- 1980-11-25 LU LU82954A patent/LU82954A1/en unknown
- 1980-11-25 IT IT26206/80A patent/IT1134443B/en active
- 1980-11-25 BE BE2/58871A patent/BE886331A/en not_active IP Right Cessation
- 1980-11-25 AR AR283359A patent/AR224552A1/en active
- 1980-11-25 NZ NZ195635A patent/NZ195635A/en unknown
- 1980-11-26 GB GB8037945A patent/GB2063731B/en not_active Expired
- 1980-11-26 JP JP16543980A patent/JPS5686217A/en active Granted
- 1980-11-26 GB GB8223181A patent/GB2100157B/en not_active Expired
- 1980-11-26 DK DK502480A patent/DK151590C/en active
- 1980-11-26 GB GB08223182A patent/GB2101022B/en not_active Expired
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR870003839A (en) | Face Milling Cutter | |
| CA2020498A1 (en) | Winged drill screw | |
| RU93050070A (en) | MILLING CUTTING PLATE | |
| SE7707808L (en) | DRILL OF THE TYPE WITH EXCHANGEABLE AND / OR REVERSIBLE HAPPENS AND SUCH HAPPENS | |
| ATE144932T1 (en) | CUTTING INSERT FOR A MILLING CUTTER | |
| KR860008822A (en) | Positive Slowaway Tip | |
| SE8202671L (en) | SAID AS WELL MANUFACTURED | |
| DE59500656D1 (en) | Reamer | |
| SE8007945L (en) | SELF-BORING SCREW | |
| GB1438326A (en) | Milling cutting tools | |
| ES2158696T3 (en) | THREAD CUTTING PLATE. | |
| MX160763A (en) | IMPROVEMENTS TO FLAT DIE OF DIE CUT THREADS WITH CUTTING STYLE ROLLERS TO PRODUCE SCREW TIP SCREWS OR DRILL BOLTS AND THE LIKE | |
| SE8304896D0 (en) | ANNUAL COLLAPSE DEVICE | |
| JPS5590212A (en) | Drill | |
| ES2001149B3 (en) | ROTARY CUTTING ELEMENT | |
| ES269447Y (en) | SINGLE EDGE READER. | |
| ATE34328T1 (en) | REBATE OR FLOOVE CUTTERS FOR WOOD OR PLASTIC PROCESSING. | |
| JPS57211406A (en) | Drill | |
| SU1181641A1 (en) | Bone cutter | |
| GB1485742A (en) | Milling cutter | |
| SU642092A1 (en) | Countersinking tool with mechanical fastening of cutting bits | |
| GB2002661A (en) | Improvements in cutting edges of rotary drills and drill bits | |
| KR890011665A (en) | Thread cutting tool | |
| JPS623101Y2 (en) | ||
| GB1306248A (en) |