Abstract:
A method to adjust a modal property of a material removal tool without changing a projection length of the material removal tool is disclosed. Adjusting substantially aligns a characteristic frequency of the material removal tool with a rotation speed of a spindle of a machine tool. A material removal tool employing the method and a method to machine metal are also disclosed.
Abstract:
The invention relates to an interface comprising a first assembly and a second assembly, wherein the first assembly on the one hand has a recess which has at least one section in the form of a truncated conical casing, and on the other hand has a contact surface, which acts in the axial direction, and wherein the second assembly on the one hand has a truncated-conical section for resting on the section of the first assembly which is in the form of a truncated conical casing, and secondly has at least one contact surface, which acts in the axial direction, for making contact with the contact surface of the first assembly. A switching lever element is arranged such that it can pivot in the recess in the first assembly. The switching lever element has at least one articulation element. The second assembly has at least one clasping element, which can be moved behind the articulation element of the switching lever element by a pivoting movement of the second assembly. With the present invention, an interface is developed which ensures simple handling whenever a tool change takes place, with high repetition accuracy with respect to the position of the assemblies which make contact.
Abstract:
L'invention concerne un procédé d'usinage d'alvéoles (3) périphériques d'un disque (2) d'une turbine d'une turbomachine, telle qu'un turboréacteur ou un turbopropulseur d'avion, consistant à usiner les alvéoles (3) par fraisage à l'aide d'une fraise (7) sensiblement cylindrique, de longueur (L) supérieure à l'épaisseur axiale (e) du disque (2), et s ' étendant sensiblement parallèlement à l'axe du disque (2), le contour (8) des alvéoles (3) étant usiné par déplacement de la fraise (7) perpendiculairement à son axe le long du profil de chaque alvéole (3). L'invention concerne aussi une turbine d'une turbomachine comprenant un disque usiné par exécution du procédé et une fraiseuse pour utilisation dans le procédé avec deux bras parallèles (6) dont les extrémités tiennent chacune une extrémité d'une fraise (7) cylindrique.
Abstract:
A coupling mechanism (12) for connecting a toolholder assembly (10) and a machine tool. The coupling mechanism (12) includes a first component (16) configured for removably securing the toolholder assembly (10) to the machine tool, wherein the first component (16) includes an axial forward end (18) defining a bore (20) that extends axially to an axial rearward end (22) of the first component (16) to form an inner surface (21) of the first component (16), the first component (16) having a plurality of apertures (24) disposed circumferentially thereabout that extend from an outer surface (26) of the first component (16) to the inner surface (21) of the first component (16). The coupling mechanism (12) further includes a second component (30) integrally formed with the first component (16) and configured for interacting with the machine tool to position the toolholder assembly (10) relative to the machine tool, wherein the second component (30) defines a positioning groove (34) on an outer surface (26) thereof.
Abstract:
The application describes a device for sealing a coolant and/or lubricant channel (107, 110), wherein the coolant and/or lubricant channel (107, 110) extends through a first tool part (106), a second tool part (101), and the device (109), wherein the device (109) comprises: a first section (602, 702), wherein the first section (602, 702) can be connected to the first tool part (106), a second section (604, 704), wherein the second section (604, 704) is arranged in such a way that the second section can protrude into the coolant and/or lubricant channel (110) of the second tool part (101), wherein the outer diameter of the second section (604, 704) is greater than or equal to the inner diameter of the coolant and/or lubricant channel (110) of the second tool part (101), and a center section (605, 705), wherein the center section (605, 705) is arranged between the first section (602, 702) and the second section (604, 704).
Abstract:
The application describes a device for sealing a coolant and/or lubricant channel (107, 110), wherein the coolant and/or lubricant channel (107, 110) extends through a first tool part (106), a second tool part (101), and the device (109), wherein the device (109) comprises: a first section (602, 702), wherein the first section (602, 702) can be connected to the first tool part (106), a second section (604, 704), wherein the second section (604, 704) is arranged in such a way that the second section can protrude into the coolant and/or lubricant channel (110) of the second tool part (101), wherein the outer diameter of the second section (604, 704) is greater than or equal to the inner diameter of the coolant and/or lubricant channel (110) of the second tool part (101), and a center section (605, 705), wherein the center section (605, 705) is arranged between the first section (602, 702) and the second section (604, 704).
Abstract:
A retention knob for use with a tool holder that is less prone to distorting a tapered tool holder surface, especially if it is over-tightened. The retention knob includes a knob head, a flange engageable with an end of a tool holder shank, a pilot segment receivable by the counter bore defined by said tool holder shank and a threaded segment spaced from said flange by an undercut segment. The threaded segment is configured so that it has a length that is substantially the minimum length required to achieve maximum thread holding strength. The undercut segment is configured to space the threaded segment from its head so that a distal end of the threaded segment is substantially near the bottom of the tapered bore forming part of the tool holder.
Abstract:
A method to adjust a modal property of a material removal tool without changing a projection length of the material removal tool is disclosed. Adjusting substantially aligns a characteristic frequency of the material removal tool with a rotation speed of a spindle of a machine tool. A material removal tool employing the method and a method to machine metal are also disclosed.
Abstract:
A tool holder (100, 200, 300, 400, 500) includes a shank (12) including a tool holder portion (12a) and a central bore (12d) for accommodating a cutting tool (14), and a first shrink fit sleeve (102, 202, 302, 402, 502) disposed about the tool holder portion (12a) of the shank (12). An application of heat to the tool holder causes the tool holder portion and the first shrink fit sleeve (102, 202, 302, 402, 502) to expand outwardly, and the removal of heat will cause the tool holder portion and the first shrink fit sleeve to contract inwardly to rigidly maintain the cutting tool (14) within the tool holder by shrink fit. The tool holder (400, 500) may also include a second shrink fit sleeve (404, 504) disposed about the first shrink fit sleeve (402, 502) to provide increased torque capability.
Abstract:
The present invention is directed to an insert, a slotting cutter assembly and a method for machining a plurality of slots in a metallic alloy part. The insert may comprise a cutting edge, at least one primary radius, at least two secondary radii and a clearance angle. The cutting edge may form a narrow outer end at a tip of the insert and a larger width region at a distance inward from the narrow outer end. The clearance angle may extend rearward from the cutting edge. The slotting cutter assembly may comprise a plurality of inserts and a cutter body. The cutter body may comprise a plurality of retaining slots and a plurality of support portions. The retaining slot may be configured to receive the insert. The support portion may provide support for the insert.