摘要:
A method for producing an internally structured slide bearing bushing involves the following steps: a) providing a slide bearing bushing with at least one bearing region which is formed as a hollow cylinder with an internal surface and which has an external diameter and an internal diameter, b) providing an external tool with a through-opening, c) providing an internal tool which has an integral cylindrical operating region with an external surface with a structure, d) inserting the internal tool into the bearing region of the slide bearing bushing, e) introducing the slide bearing bushing and the internal tool into the conical widened portion of the through-opening of the external tool, f) pressing the slide bearing bushing into the through-opening of the external tool, g) removing the slide bearing bushing from the through-opening of the external tool, and h) radially widening the slide bearing bushing.
摘要:
There is provided a method for manufacturing ring-shaped members at a good yield and high production efficiency. To achieve this object, the following is performed. A single (a sequence of) forging produces a joined body formed by radially coupling four cylindrical portions with different inner diameter sizes. A cylindrical member that has the largest inner diameter size and a cylindrical member that has the third largest inner diameter size after the forging are employed as ring-shaped members without change. A rolling process is performed on respective cylindrical member that has the smallest inner diameter size and cylindrical member that has the second largest inner diameter size to obtain ring-shaped members. Thus, two sets of ring-shaped members are obtained as two sets of inner rings and outer rings.
摘要:
A method of manufacturing a recirculating ball nut for a ball screw drive, comprising a base body which includes at least one recirculating ball track, the method comprising the following manufacturing steps: manufacturing the base body by precision forging; and finishing the recirculating ball track by a cutting method subsequent to manufacturing the base body.
摘要:
In a recirculating ball nut for a ball screw drive, having a base body which includes at least one recirculating ball track, the base body is a forged component and the recirculating ball track is manufactured by a cutting manufacturing method. A further subject matter of the invention is an assembly for a ball screw drive of a power steering, having a belt pulley and a recirculating ball nut according to the invention, the belt pulley being connected to the recirculating ball nut so as to be non-rotatable relative thereto. A further subject matter of the invention is a method of manufacturing a recirculating ball nut.
摘要:
The invention relates to an axial bearing arrangement (1) and a method for the manufacture thereof, with a first bearing ring (3) forming a structural unit (16) with a radially inwardly directed axial projection (11) with a radially outwardly directed resilient element (13) and a first running surface (5), and a second bearing ring (2) with a radially outwardly arranged axial projection (10) with a radially inwardly directed resilient element (12), with a second running surface (4), and a single-piece rolling body cage (6) which receives distributed over the circumference rolling bodies (8) which roll on the running surfaces (4, 5), wherein the rolling body cage (6) radially engages over the two resilient elements (12, 13).In order to be able to manufacture the axial bearing arrangement (1) without post processing steps as a structural unit (16) with fixedly secured structural components arranged so that they cannot be lost, the invention proposes to receive the rolling body cage (6) between two retaining rings (18, 18) arranged radially over each other and axially supported between contact faces (19, 20) of the rolling body cage (6) and the resilient elements (12, 13).
摘要:
The invention refers to a bearing unit and a method for its manufacture incorporating an outer race ring (1), an inner race ring (4) having an inner envelope surface with an axially tapering saw-tooth profile (6), a thin-walled axially slotted sleeve (7), having a tapering saw-tooth profile (9) on its outer envelope surface, cooperating with the saw-tooth profile (6) in the inner race ring (4) for increasing and decreasing the grip of the thin-walled sleeve against a shaft, when inner race ring (4) and sleeve (7) are mutually displaced, a flange (10) connected to the sleeve (7) and having tightening means (11) operable to cause the displacement between sleeve (7) and inner race ring (4), rolling bodies (12) positioned between inner and outer race rings, wherein the surface of the inner race ring (4) presenting the tapering saw-tooth profile (6) has been subjected to a turning operation followed by hardening.
摘要:
In order to omit jostling caused between the adjacent rolling elements, a clearance is formed therebetween in a load region. A transfer path has a region that allows the rolling elements to contact only one of the transfer grooves of the transfer path, or a region that has a friction force acting between one of the transfer grooves of the transfer path and the rolling elements being greater than the friction force acting between another one of the transfer grooves of the transfer path and the roiling elements. The one of the transfer grooves in the region has a cross sectional shape taken in a direction perpendicular to the direction, in which the rolling elements are transferred, which cross sectional shape allowing two point contact with the rolling elements; and the rolling apparatus further has a contact-angle changing path that has a contact angle with the rolling elements that is greater than the contact angle of the other portion of the transfer path. Thus, the orbital motion speed of the rolling elements is changed.
摘要:
An inner race or and outer race, including: a first annular portion with a first radial surface at a first end of the race; and a second annular portion formed from a same piece of material as the first portion, at least partially in contact with the first portion, the second portion having a second radial surface at the first end of the race, the second radial surface separate from the first radial surface at the first end of the race. In one embodiment, the first and second radial surfaces are substantially orthogonal to a longitudinal axis for the race. The inner race includes a third annular portion disposed at a second end of the race, opposite the first end, and formed from the same piece of material. The first and second annular portions extend from the third annular portion to the first end of the race.
摘要:
An apparatus and a method for manufacturing an outer ring member for a constant velocity joint and an intermediate molded body. The apparatus includes a molding land formed in circular arc shape in cross section with a prescribed radius of curvature, a relief part continued with the molding land part, and a correcting land part continued with the relief part and larger than the outer diameter of the relief part formed at one end outer peripheral surface of a second punch for forming a hole in a shaft part drawn by a shaft part molding part. The entire part of the molding land part of the second punch is formed to be positioned between the upper end F1 and the lower end F2 of the shaft part molding part in the vertical direction of the through hole of a lower die.
摘要:
A manufacturing method of a raceway ring for a radial ball bearing, the radial ball bearing has the raceway ring has at least one of an outer ring formed with an outer ring raceway, of which sectional shape is arcuate, and which is formed entire of circumference on an axially intermediate portion of an inner circumferential face as a raceway surface; and an inner ring formed with an inner ring raceway, of which sectional shape is arcuate, and which is formed entire of circumference on an axially intermediate portion of an outer circumferential face as the raceway surface and plurality of balls rollably provided between the inner ring raceway and the outer ring raceway. The manufacturing method of the raceway ring has a high accurate material working process of preparing a high accurate material of which volume is substantially the same as that of the raceway ring of the radial ball bearing which is a finished product by cold working and a raceway ring working process of plastically deforming the high accurate material by cold working and forming the raceway surface on the axially intermediate portion of either outer or inner circumferential face wherein working for removing material is not conducted before a heat treatment.