摘要:
A cutting tool assembly (10) includes a tool body (16) having a major flare diameter portion (24) disposed adjacent the cutting end (22) of the cutting tool (12) and a puller groove (26) disposed below the major flare diameter portion (24). A compressible sleeve (34) is disposed about a shank portion (30) of the cutting tool (12), which is mounted in a tool holder (14). A washer (36) is fitted about the compressible sleeve (34), and acts as one of the sides of the puller groove (26). The location of the puller groove (26) below the major flare diameter portion (24) allows for the cutting tool (12) to be made by cold forming, or the like.
摘要:
Die Erfindung betrifft ein Werkzeug für die Montage eines Meißels (30) an einem Meißelhalter (40) mit einem Stellglied (70), das einen Abdrückabschnitt (74) aufweist, wobei das Stellglied (70) entlang einer Verfahrrichtung (V) versetzbar ist. Eine deutliche Vereinfachung beim Meißelwechsel kann dann erreicht werden, wenn vorgesehen ist, dass das Stellglied (70) mittels einer Stelleinheit (60) versetzbar ist, dass die Stelleinheit (60) einen Einziehabschnitt (73) aufweist, der im Abstand zu dem Abdrückabschnitt (74) steht und der quer zur Verfahrrichtung (V) der Stelleinheit angeordnet ist, und dass das Stellglied (70) in Verfahrrichtung mittels der Stelleinheit (60) bidirektional kraftbetätigbar ist.
摘要:
The present invention provides a holder for holding a tooth on a body of a cutting blade or grinding drum for cutting or grinding rock or hard earth formations. The body has an attachment surface for attaching the holder. The holder comprises a portion for holding the tooth in a manner such that a portion of the tooth projects from the holder. The holder also comprises a base surface for attaching the holder to the attachment surface of the body. The holder is positionable in a plurality of different orientations in which the base surface is attachable to the attachment surface and in which the received tooth projects from the body in a predetermined direction. When the holder is positioned in one of the plurality of orientations, the base surface has, within an area over the attachment surface, a shape which is profiled so that a region defined between the base surface and the attachment surface is, for at least one of the plurality of different orientations, smaller than a region that would be defined if the base surface would have a flat shape.
摘要:
A power rake attachment includes a rotary drum and a plurality of bit assemblies mounted on an outer surface of the drum. Each bit assembly includes a hollow holder affixed to the other surface, and a cutter bit disposed in the holder. The cutter bit includes a front cutting heat and a rear shank. The shank extends into the holder, and the cutting head projects longitudinally past a front end of the holder. A retainer retains the shank within the holder, and wear sleeve is disposed around an outer surface of the holder. The cutter bit includes a laterally outwardly projecting sleeve-retaining portion which extends laterally past the outer surface of the holder and into overlying relationship to a front end of the holder to retain the wear sleeve longitudinally on the holder.
摘要:
The invention relates to a fixture for a round shank chisel (10) to a road milling machine or the like. Said round shank chisel (10) has a chisel head (12) and a chisel shank (14). With a bearing surface said chisel head (12) rests upon a wearing protection disk (19) which in turn rests on a chisel holder (20) and is supported by it. Said chisel shank (14) is accommodated by a location bore (21) of the chisel holder (20). The aim of the invention is to prevent dirt from penetrating the area of the location bore (21) of such a fixture and a the same time to ensure that the free movability of the round shank chisel (10) is not impaired. To this end, the chisel holder (20) has a circumferential projection (23) or a circumferential depression which extends along the location bore (21). Also, the wearing protection disk (19) is provided with a circumferential receiving groove (19.6) or a circumferential shoulder and the projection (23) or the depression of the chisel holder (20) engages with the receiving groove (19.6) or the depression of the wearing protection disk (19) when the round shank chisel (10) is assembled.
摘要:
A cutting tool (20) for use in excavating an earth formation comprising an elongate tool body (22) having a hard tip (26) being affixed to the forward end thereof. The hard tip (26) has a plurality of integral, coaxial sections including an integral ribbed section which presents a plurality of longitudinal ribs (62) about the circumference thereof. The tip (26) further includes an integral lobed base section (94) which presents a plurality of radially extending lobes (96). An integral transition region provides a transition between the ribbed section and the base section (94).
摘要:
The invention pertains to a tool (30) for releasing a key (40) that axially secures a shank (22) of a cutter (20) in a bore of a cutter holder in a coal cutting machine, road grooving machine or the like. The key (40) can be controllably released when a coupling element (35) of the tool has at least one projection which is inserted into a tool holding fixture in the key and the coupling element is attached at a joint (33) to a lever (34) which can be supported on the cutter holder, the cutter or another machine component by means of a support element (39) which is situated at a distance from the joint.
摘要:
A cutting bit (10) including a conical nose (12) and an integral depending cylindrical shank (14). The conical nose (12) includes a tip (26) having a hard wear resistant insert (28) and a flange (24) positioned between the tip (26) and the shank (14) and having a diameter greater than the shank (14). The flange (24) has a planar underside (30) including at least one undercut (34) extending radially inward from the exterior peripheral surface of the flange (24) to provide in cooperation with the face (32) of a cutting bit block (20) a resistance surface for insertion of a tine of a cutting bit removal tool.
摘要:
The invention pertains to a tool (30) for releasing a key (40) that axially secures a shank (22) of a cutter (20) in a bore of a cutter holder in a coal cutting machine, road grooving machine or the like. The key (40) can be controllably released when a coupling element (35) of the tool has at least one projection which is inserted into a tool holding fixture in the key and the coupling element is attached at a joint (33) to a lever (34) which can be supported on the cutter holder, the cutter or another machine component by means of a support element (39) which is situated at a distance from the joint.
摘要:
A bit holder (10) for a cutting tool utilizes a non-rotatable sleeve (26) which is slit (36) its entire length axially and is force-fitted into the bore (20) of the bit holder (10). The sleeve (26) is removable in the field and provides protection for the bit holder (10). In an alternate embodiment the sleeve is provided with additional retaining means (44) in the form of a circumferential flange (46) which extends beyond the bit holder (10) and contacts the rearmost portion thereof.