FR2623114A2 - Tap with improved guidance - Google Patents
Tap with improved guidance Download PDFInfo
- Publication number
- FR2623114A2 FR2623114A2 FR8715661A FR8715661A FR2623114A2 FR 2623114 A2 FR2623114 A2 FR 2623114A2 FR 8715661 A FR8715661 A FR 8715661A FR 8715661 A FR8715661 A FR 8715661A FR 2623114 A2 FR2623114 A2 FR 2623114A2
- Authority
- FR
- France
- Prior art keywords
- tap
- counter
- calibration
- point
- comb
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
- B23G5/06—Taps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
Abstract
Description
Le brevet principal et l'additif NO f prévoient de réaliser sur la " longueur filetée l " des contre-détalonrages " m 1 " à proximité de la face de coupe " et " m 2 " à proximité du " talon " dans des parties du filetage qui ont un rle de guidage pour gérer des zones-de frottement. The main patent and the additive NO f provide for carrying out counter-calibrations on the "threaded length l" "m 1" near the cutting face "and" m 2 "near the" heel "in parts of the threads which have a guiding role to manage zones of friction.
L'addition NO 2, décrite cidessous, a pour but d'étendre l'amélioration de l'effet auto-guidage en prévoyant de réaliser le ou les contredétalonnages en un endroit quelconque du peigne " P " - La figure 1-2 montre un contre-détalonnage " m 3 " réalisé vers le milieu du peigne. On peut envisager de créer sur un peigne plusieurs contre-détalonnages de type " m 3
Les contre-détalonnages " m 3 " peuvent être réalisés sur une portion quelconque ou sur la totalité du profil des filets du taraud, sur une portion quelconque ou sur la totalité de la longueur filetée " l ",sur un nombre quelconque ou sur la totalité des peignes du taraud.The addition NO 2, described below, is intended to extend the improvement of the self-guiding effect by providing for carrying out the counter-calibration (s) at any point of the comb "P" - Figure 1-2 shows a "m 3" counter-calibration performed towards the middle of the comb. We can consider creating on a comb several "m 3" counter-calibrations
The "m 3" counter-calibrations can be carried out on any portion or on the entire profile of the threads of the tap, on any portion or over the entire threaded length "l", on any number or all tap combs.
La réalisation du cor.tre-détalonnage dans la partie centrale du peigne crée une zone de frottement en A' . La distance OA' peut etre maftrisêe puur être égale, plus grande ou plus petite que OA. Le point A peut entre un point de frottement ou un point de coupe. Dans la théorie il suffit de créer en A' un point de frottement sur le même # que A. Dans la pratique, les parties coupantes d'un taraud réalisent un taraudage légèrement différent du diamètre du taraud. La différence peut être négative ou positive. Le diamètre du point de frottement A' peut etre supérieur à celui du point A ; sa détermination est du ressort de l'expérience de l inventeur ; toutes les valeurs possibles font partie de l'invention. The realization of the cor.tre-calibration in the central part of the comb creates a friction zone in A '. The distance OA 'can be maftrisêe can be equal, greater or less than OA. Point A can be between a friction point or a cutting point. In theory, it suffices to create a friction point at A 'on the same # as A. In practice, the cutting parts of a tap tap slightly different from the diameter of the tap. The difference can be negative or positive. The diameter of the friction point A 'can be greater than that of the point A; its determination is a matter for the experience of the inventor; all possible values are part of the invention.
La réalisation du contre-détalonnage dans la partie centrale du peigne peut être grandement favorisée par un dégagement G qui constitue en plus une réserve de lubrifiant ( fig. 2-2 j. Cette opération fait partie de l'invention, que le contre-détalonnage soit réalisé sur tout ou partie du profil des filets du taraud, sur tout ou partie de la longueur filetée, sur un nombre quelconque ou sur la totalité des peignes du taraud. The realization of counter-calibration in the central part of the comb can be greatly helped by a clearance G which also constitutes a reserve of lubricant (fig. 2-2 j. This operation is part of the invention, that counter-calibration is carried out on all or part of the profile of the threads of the tap, on all or part of the threaded length, on any number or on all of the combs of the tap.
Dans une configuration particulière le dégagement G peut être une ou plusieurs des goujures du taraud. In a particular configuration, the clearance G may be one or more of the flutes of the tap.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8715661A FR2623114A2 (en) | 1987-11-13 | 1987-11-13 | Tap with improved guidance |
DE8888400652T DE3864058D1 (en) | 1987-03-20 | 1988-03-18 | TAP DRILL. |
EP19880400652 EP0286485B1 (en) | 1987-03-20 | 1988-03-18 | Thread-cutting taps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8715661A FR2623114A2 (en) | 1987-11-13 | 1987-11-13 | Tap with improved guidance |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2623114A2 true FR2623114A2 (en) | 1989-05-19 |
Family
ID=9356728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8715661A Pending FR2623114A2 (en) | 1987-03-20 | 1987-11-13 | Tap with improved guidance |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2623114A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10155979A1 (en) * | 2001-11-14 | 2003-05-22 | Sandvik Ab | Thread cutting tool has groups of teeth which have at least in part a radial under cut section on free surface behind cutting edge for longer service life |
US20130236260A1 (en) * | 2012-03-07 | 2013-09-12 | Kennametal Inc. | Chip-resistant cutting tap |
US20150375356A1 (en) * | 2013-02-18 | 2015-12-31 | Kennametal Incl | Method for producing an axially extending tool tip and tool tip |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE132151C (en) * | ||||
FR692457A (en) * | 1929-06-19 | 1930-11-06 | Cie Europ Des Metaux | Improvements to taps |
FR735564A (en) * | 1932-04-19 | 1932-11-10 | Method and device for manufacturing cylindrical-conical nuts | |
US1908575A (en) * | 1930-11-11 | 1933-05-09 | Tucker Gilmore Mfg Company | Tap |
DE1120845B (en) * | 1957-08-01 | 1961-12-28 | Rolf Lieb | Thread cutting tool with a conically ground thread |
US3113330A (en) * | 1960-06-27 | 1963-12-10 | Vermont American Corp | Tap having a leading rough cutting portion followed by a finish cutting portion on each cutting tooth |
-
1987
- 1987-11-13 FR FR8715661A patent/FR2623114A2/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE132151C (en) * | ||||
FR692457A (en) * | 1929-06-19 | 1930-11-06 | Cie Europ Des Metaux | Improvements to taps |
US1908575A (en) * | 1930-11-11 | 1933-05-09 | Tucker Gilmore Mfg Company | Tap |
FR735564A (en) * | 1932-04-19 | 1932-11-10 | Method and device for manufacturing cylindrical-conical nuts | |
DE1120845B (en) * | 1957-08-01 | 1961-12-28 | Rolf Lieb | Thread cutting tool with a conically ground thread |
US3113330A (en) * | 1960-06-27 | 1963-12-10 | Vermont American Corp | Tap having a leading rough cutting portion followed by a finish cutting portion on each cutting tooth |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10155979A1 (en) * | 2001-11-14 | 2003-05-22 | Sandvik Ab | Thread cutting tool has groups of teeth which have at least in part a radial under cut section on free surface behind cutting edge for longer service life |
EP1314506A2 (en) * | 2001-11-14 | 2003-05-28 | Sandvik AB | Thread cutting tool |
EP1314506A3 (en) * | 2001-11-14 | 2004-03-24 | Sandvik AB | Thread cutting tool |
US6918718B2 (en) | 2001-11-14 | 2005-07-19 | Sandvik Ab | Thread cutting tool having cutting teeth with stepped undercut flanks |
CN100379514C (en) * | 2001-11-14 | 2008-04-09 | 山特维克知识产权股份公司 | Thread cutting tool |
US20130236260A1 (en) * | 2012-03-07 | 2013-09-12 | Kennametal Inc. | Chip-resistant cutting tap |
US9011050B2 (en) * | 2012-03-07 | 2015-04-21 | Kennametal Inc | Chip-resistant cutting tap |
US20150375356A1 (en) * | 2013-02-18 | 2015-12-31 | Kennametal Incl | Method for producing an axially extending tool tip and tool tip |
US10144104B2 (en) * | 2013-02-18 | 2018-12-04 | Kennametal Inc. | Method for producing an axially extending tool tip and tool tip |
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