摘要:
The present invention relates to a thread milling cutting tool for metal cutting comprising an elongated main body, which main body (1) comprises a cutting section (5) which extends axially rearward from a front end (2) and comprises a plurality of teeth (7). The plurality of teeth (7, 22) comprises at least a first set (6) of circumferentially spaced teeth (7), wherein each tooth (7) of the at least first set has a same, first axial distance (8) to the front end, and a clearance surface (14) of each tooth (7) has a radial clearance angle. The clearance surface (14) of each tooth (7) of the at least first set (6) of teeth comprises a rotationally leading portion (16) and a rotationally trailing portion (17), wherein the leading portion (16) extends from and rotationally behind the cutting edge (15), and the radial clearance angle (α) of the leading portion (16) is smaller than the radial clearance angle (β) of the trailing portion (17).
摘要:
In a screw thread cutter, a screw thread-cutting edge is formed on an outer periphery of a tip portion of a cutter body. Finishing edge-thread ridge height from a tangent line passing through valley bottoms of second and third valley portions to outer peripheral ends of first and second finishing edges are equal to each other. A preceding edge-thread ridge height from the tangent line to an outer peripheral end of a preceding edge is lower than each of the finishing edge-thread ridge height. A first valley portion-depth from the outer peripheral end of the first finishing edge to the valley bottom of the first valley portion is deeper than a second valley portion-depth from the outer peripheral end of the second finishing edge to the valley bottom of the second valley portion.
摘要:
Die Erfindung betrifft einen Bohrgewindefräser (1) zur Herstellung einer Bohrung und anschließendem Fräsen eines Gewindes in die Bohrung, der einen Arbeitsbereich (2) aufweist, an dessen Umfang (3) eine Anzahl Bohr-bzw. Frässchneiden angeordnet sind, wobei axial zur Achse (4) im Anschluss an wenigstens eine Bohrschncidc (17, 18, 27, 28) des Bohrbcrcichs (40) jeweils wenigstens eine zugehörige Frässchneide (8, 10) des Gewindefräsbereichs (30) an einem zugehörigen gemeinsamen Bohrspanraum (11, 12) zum Abführen der von der Bohrschneide erzeugten Bohrspäne und vorzugsweise auch zum Abführen der von diesen Frässchneiden erzeugten Frässpäne angeordnet sind und der Durchmesser (d min1 ) jedes Bohrspanraumes (11, 12) am der Achse (4) am nächsten liegenden Punkt in axialer Erstreckung von dem Bohrbereich (40) über den Gewindefräsbereich (30) abnimmt oder das Volumen jedes Bohrspanraumes (11, 12) in axialer Erstreckung von dem Bohrbereich (40) über den Gewindefräsbereich (30) zunimmt.
摘要:
The invention relates to a whirling tool (10) for the metal-cutting machining of a workpiece, comprising three, or a plurality of three cutting plates (14a, 14b), wherein each of the cutting plates (14a, 14b) has at least one cutting edge (42a, 42b); a cutting plate carrier (12) having a plurality of cutting-plate receptacles (26) for respectively receiving one of the cutting plates (14a, 14b), wherein the cutting-plate receptacles (26) are arranged distributed over the cutting plate carrier (12) in the circumferential direction (20); and a plurality of fastening elements (16) for detachably fastening the cutting plates (14a, 14b) in the cutting-plate receptacles (26) of the cutting-plate carrier (12). The cutting plates (14a, 14b) comprise at least two different kinds of cutting plates (14a, 14b), wherein at least one cutting plate (14a) of a first kind and one cutting plate (14b) of a second kind, each a group of three adjacently arranged cutting plates (14a, 14b) are provided on the cutting-plate carrier (12). The cutting plate (14a) of the first kind differs from the cutting plate (14b) of the second kind by the overall geometry of the cutting plate (14a) of the first kind, by a dimension of the at least one cutting edge (42a, 42b), and/or by a shape of the at least one cutting edge (42a, 42b).
摘要:
The invention relates to a die stock (10) having: • - a substantially cylindrical holder (12) having a plurality of receiving grooves (24) for receiving a detachably arranged cutting insert (26) and each detachably arranged clamping wedge (28), wherein each of these receiving grooves (24) extends in the axial direction (20) from a first end face (32) of the holder (12) extending transversely to the axial direction (20), and in the radial direction (30) from an inner side (22) of the holder (12) facing the longitudinal axis (18) of the holder, wherein each cutting insert (26) has at least one cutting edge (54) on a front side (62) substantially facing the longitudinal axis (18) of the holder, wherein the clamping wedges (28) are arranged in the respective receiving groove (24) laterally next to the cutting inserts (26) in the circumferential direction (34) transverse to the axial direction (20) and the radial direction (30); and • - a retaining means (36) for each receiving groove (24) for fixing the clamping wedges (28) and the cutting inserts (26) in the receiving groove (24) concerned.
摘要:
Gemäß der Erfindung werden zur Erzeugung eines Gewindes in einem Werkstück in wenigstens einem ersten Arbeitsschritt in dem Werkstück (50) durch Abtragen von Material des Werkstücks ein Vorgewinde erzeugt, dessen Vorgewindeprofil (1) zwei Vorgewindeflanken (1A, 1B) und einen die beiden Vorgewindeflanken verbindenden Vorgewindegrund (1C) aufweist, in wenigstens einem zweiten Arbeitsschritt durch plastisches Eindrücken des Materials des Werkstücks wenigstens in einem Teilbereich wenigstens einer der beiden Vorgewindeflanken (1A, 1B) um ein vorgegebenes oder vorgebbares Eindrückvolumen (ΔVA, ΔVB) ein Endgewinde mit einem Endgewindeprofil (3) erzeugt, wobei, bezogen auf eine gleiche Profillänge des Vorgewindeprofils (1), das Eindrückvolumen (ΔVC) am Vorgewindegrund (1C) kleiner ist als das Eindrückvolumen (ΔVA, ΔVB) an der oder den Vorgewindeflanke(n) (1A, 1B).
摘要:
Method for milling a threading of a screw or tapped hole, said threading having a cross section in the shape of a triangle with a truncated crest, comprising: milling a first flank (V1) of at least one spire of said thread by means of a first comb (A) of a milling tool (F), wherein the teeth of said first comb (A) are spaced in relation to one another by a first pitch (P1); milling a second flank (V2) of at least one other spire of said thread by means of a second comb (B) of said milling tool (F), wherein the teeth of the second comb (B) are spaced in relation to one another by a second pitch (P2) equal to the first pitch (P1) and offset from the teeth of the first comb (A) by a phase displacement (DP); milling a truncated portion (V3) of said crest by means of a third comb (C) of said milling tool (F).