摘要:
A roller casing for a pulley is comprised of coaxial ring halves mounted one over the other. The diameter of the running surface can be varied without varying the bearing size by employing corrugations in the circumferential direction, or by providing lateral radially outwardly directed rims on the inner ring part. Alternatively the iner ring may be comprised of two ring halves having their central parts directed toward one another.
摘要:
Sealing ring for radial rolling bearings with an outer race and an inner race and rolling bodies in the gap between them, consisting of a ring body of elastic material bridging the gap with, at one radial end, at least one sealing lip or the like sliding along a contact surface of the outer race or inner race and with, at its opposite end, a hub section supported on a seating surface of the inner or outer race and a stiffening plate incorporated into the ring body with a radial web section and, in the hub section, a collar section connected to the outer edge of the web section facing the hub, characterized in that the collar section of the stiffening plate is formed both by axially inward-bent and axially outward-bent tabs of the outer edge of the stiffening plate.
摘要:
In a clutch throwout, particularly for automotive clutches, a self-centering clutch bearing is arranged on or in a sliding sleeve. The stationary bearing ring of the clutch bearing is connected with the sliding sleeve via an intermediate element, which features guides for the radial sliding, in two mutually crossing radial directions, of the clutch bearing in relation to the sliding sleeve.To enable the clutch bearing to slide in any radial direction and to position itself precisely centered in relation to the tongue ends of the clutch diaphragm spring, without great constraining forces, while, regardless of position, damping the relative movements of clutch bearing in relation to sliding sleeve, intermediate element is radially interlocked with the stationary bearing ring and with the sliding sleeve, in two mutually crossing directions.
摘要:
A bearing assembly includes two rolling-element bearings having inner and outer rings and rolling elements between the rings, the rolling-element bearings being configured to be axially preloaded, at least one of the inner and outer rings including an axially adjustable flange ring forming a flange for the rolling elements, the flange ring having a first section axially slidably mounted on one of the bearing rings and a second section axially adjacent to the first section, the second section including a thread, and the thread being configured to threadably engage a counterthread of a separate component at a location axially spaced from the bearing ring.
摘要:
A crankshaft or connecting-rod bearing assembly of an internal combustion engine includes a bearing journal configured to function as a bearing inner ring, and a bearing outer ring surrounds the bearing journal. At least one row of rolling elements is disposed between the bearing journal and the bearing outer ring, the rolling elements are held by a cage, and the cage includes at least two cage segments, each of which extends around a circumferential section of the bearing journal. Furthermore, the at least two cage segments are connected to each other in a materially-bonded manner at at least one joint lying in the circumferential direction.
摘要:
An electric actuator (13) comprises a housing (17) which contains a screw mechanism (11) and an electric motor (5) which is driveably connected to the screw mechanism (11) which provides a linear movement in response to a rotational movement of the electric motor (5), said screw mechanism (11) comprising a screw (12) and a nut (33) one of which is supported rotatably with respect to the housing (7) by means of an angular contact ball bearing (31), said screw (12) by means of an intermediate coupling element (18) engaging an actuating member (16) for transferring axial forces. The intermediate coupling element (18) engages the screw (12) by means of an axial connection (53, 54) which allows radial movements.
摘要:
A bearing assembly includes at least one outer ring and an inner ring unit including first and second inner rings, the inner ring unit having a central, axial bore extending through the first and second inner rings, and a plurality of attachment bores for attaching the bearing assembly to a bearing carrier. A first plurality of roller bodies is disposed between the at least one outer ring and the first inner ring and a second plurality of roller bodies is disposed between the at least one outer ring and the second inner ring. A pin extends through the central axial bore of the first inner ring and through the central axial bore of the second inner ring, and the pin maintains a predetermined preload on the bearing assembly by holding the first inner ring in a fixed position relative to the second inner ring.
摘要:
The invention relates to a method for activating a workpiece manipulator (4) of a machine tool (1), comprising a control device which prescribes machining paths (6) for a workpiece by means of a computing unit, which machining paths are travelled by the workpiece manipulator (4) from a machine starting position (A), wherein the workpiece (5) which can be moved by the workpiece manipulator (4) in a multi-axially translatory and preferably also rotating manner is passed to a plurality of tools (3) one after the other for the step-by-step machining. In order to provide advantageous conditions it is proposed that in the case of termination of machining the workpiece manipulator (4) is made to move with the workpiece (5) back over the path of movement (7) assigned to the respective machining step into a position (8) prior to this machining step, in which the workpiece manipulator is optionally stopped or from which the workpiece manipulator is moved into the machine starting position (A).
摘要:
A crankshaft or connecting-rod bearing assembly of an internal combustion engine includes a bearing journal configured to function as a bearing inner ring, and a bearing outer ring surrounds the bearing journal. At least one row of rolling elements is disposed between the bearing journal and the bearing outer ring, the rolling elements are held by a cage, and the cage includes at least two cage segments, each of which extends around a circumferential section of the bearing journal. Furthermore, the at least two cage segments are connected to each other in a materially-bonded manner at at least one joint lying in the circumferential direction.
摘要:
The invention relates to a machine tool (1), comprising a plurality of fixed tool spindles (3) and such that can optionally be displaced from a retracted idle position to an extended working position and can be positioned at different positions in a frame-like rack (2), and a workpiece carrier (4) with at least one workpiece holder (5), with the workpiece (4) carrier being movable at least in several axes in a translational manner and preferably also in a rotational manner. In order to provide advantageous constructional conditions it is proposed that at least one of the tool spindles (3) is associated with a tool magazine (7) plus tool changer (8).