摘要:
A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of Al x Ti 1-x , the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of Al y Ti 1-y , the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7, the Al-rich layer exhibiting a maximum peak in the (220) plane when the Al-rich layer is analyzed through X-ray diffraction in a direction normal to a surface of the coating.
摘要:
A cutting tool includes a substrate and a coating film provided on the substrate, wherein the substrate is a cBN sintered material including more than or equal to 30 volume % and less than 80 volume % of cBN and a binder, the coating film includes a compound layer constituted of a composition of Ti 1-x Al x C 1-a N a , where 0.70≤X≤0.95 and 0
摘要:
A surface-coated cutting tool has a rake face and a flank face, and includes a base material and a coating formed on the base material. The base material has a cutting edge face connecting the rake face to the flank face, and an oxygen concentration of less than or equal to 1 at.% at a depth position of 0.4 µm from the cutting edge face. The coating includes an aluminum oxide layer containing a plurality of aluminum oxide crystal grains. The aluminum oxide layer includes: a first region made up of a region A on the rake face and a region B on the flank face; a second region on the rake face except for the region A; and a third region on the flank face except for the region B. The aluminum oxide layer satisfies a relation: b-a > 0.5, where a is an average value of TC(006) in the first region in texture coefficient TC(hkl), and b is an average value of TC(006) in the second or third region in texture coefficient TC(hkl).
摘要:
Provided is a taper thread-cutting spiral pipe tap for which the occurrence, in the female thread, of gouges and cutting edge marks when tap rotation is stopped is limited. The taper thread-cutting spiral pipe tap 10 has four helical grooves 20. The cutting edge 24 located every specified number of the multiple cutting edges 24, which are located successively along the succession of thread crests 18 of the complete thread portion 14, is removed. As a result, it is possible to obtain a taper thread-cutting spiral pipe tap 10 for which the occurrence of gouges of the inner circumferential surface of a tapered female pipe thread, the occurrence of chip clogging, and the occurrence of cutting edge 24 marks when tap rotation is stopped are limited.
摘要:
A surface-coated cutting tool includes a base material and a coating film formed on a surface of the base material. The coating film includes a first alternating layer and a second alternating layer formed on the first alternating layer. The first alternating layer includes first and second layers. The second alternating layer includes third and fourth layers. One or a plurality of the first layers and one or a plurality of the second layers are layered alternately, and one or a plurality of the third layers and one or a plurality of the fourth layers are layered alternately. Each of the one or plurality of the first layers is composed of a nitride or carbonitride of Al a Cr b M1 1 - a-b . Each of the one or plurality of the second layers is composed of a nitride or carbonitride of Al c Ti d M2 1-c-d . Each of the one or plurality of the third layers is composed of a nitride or carbonitride of Al e Ti f M3 1-e-f . Each of the one or plurality of the fourth layers is composed of a nitride or carbonitride of Al g Ti h M4 1-g-h . Each of the M1, the M2, the M3, and the M4 is one or more elements selected from a group consisting of a group 4 element, a group 5 element, a group 6 element except Cr and Ti in a periodic table, Si, and B.
摘要:
A cutting tap is provided which can form an internal thread with high accuracy even when a prepared hole for the internal thread has an inner periphery of which the dimensional accuracy is low. The cutting tap includes thread ridges (5), roots (8) formed between the respective axially adjacent pairs of thread ridges (5), and a plurality of deburring thread grooves (10) arranged at a constant pitch toward the axial front side of the cutting tap from the rearmost ones of the roots (8) in which the deburring thread grooves (10) are formed, and formed such that a groove bottom diameter (d 3 ) of the deburring thread grooves (10) gradually decreases toward the axial front side of the cutting tap. The respective deburring thread grooves (10) have groove bottom diameter (d 3 ) reliefs by which the groove bottom dimeter (d 3 ) gradually decreases from the front side toward the rear side of each deburring thread groove (10) in the rotation direction of the cutting tap, the groove bottom diameter (d 3 ) reliefs being set to be larger than effective diameter (d 1 ) reliefs of the thread grooves (5).
摘要:
Die Erfindung betrifft einen Gewindeformer oder -bohrer, umfassend einen Schaftkörper, der an seinem einen Ende einen Einspannabschnitt und an seinem anderen Ende einen Profilkörper zum Formen oder Schneiden eines Gewindes aufweist, wobei zumindest der Profilkörper schichtweise in einem 3D-Druckverfahren aufgebaut worden ist, wobei mindestens zwei aus unterschiedlichen Materialien (16, 18, 20, 26, 28) bestehende Abschnitte (26, 28) des Profilkörpers erzeugt worden sind. Die Erfindung betrifft außerdem ein Verfahren zur Herstellung eines solchen Gewindeformers oder -bohrers.
摘要:
Die Erfindung betrifft einen Gewindeformer oder -bohrer, umfassend einen Schaftkörper (10), der an seinem einen Ende einen Einspannabschnitt (12) und an seinem anderen Ende einen Halteabschnitt (14) aufweist, weiter umfassend einen separat von dem Schaftkörper (10) ausgebildeten Profilkörper (16') mit Gewindedrückkanten (45) oder Gewindeschneiden zum Formen oder Schneiden eines Gewindes an einem Werkstück, wobei der Profilkörper (16') an seinem einen Ende einen Anschlussabschnitt (20) aufweist, mit dem der Profilkörper (16') an dem Halteabschnitt (14) des Schaftkörpers (10) befestigbar ist, wobei zumindest der Profilkörper (16') schichtweise in einem 3D-Druckverfahren aufgebaut worden ist, wobei innerhalb des Profilkörpers (16') eine bei an dem Schaftkörper (10) befestigtem Profilkörper (16') mit einer innerhalb des Schaftkörpers (10) ausgebildeten Kühlmittelversorgungsleitung (32) fluchtende Kühlmittelzuführleitung (40) ausgebildet ist,die mit mehreren innerhalb des Profilkörpers (16') ausgebildeten Kühlmittelverteilleitungen (44, 44', 44", 44"') verbunden ist, wobei die Kühlmittelverteilleitungen (44, 44', 44", 44'") jeweils eine Austrittsöffnung im Bereich der Gewindedrückkanten (45) oder Gewindeschneiden besitzen.Die Erfindung betrifft außerdem ein Verfahren zur Herstellung eines solchen Gewindeformers oder -bohrers.