摘要:
An assembly such as a tool head for a spark erosion profiling machine tool comprises an elongate tool holding member having first and second opposed lengthwise bearing surfaces and third and fourth opposed lengthwise bearing surfaces. By way of example the member can be square, the bearing surfaces then being the four long sides of the member. The member is partly housed in a housing wherein there are mounted bearings which support the member for movement in the direction of its length with respect to the housing. The bearings can comprise discrete circulating roller bearing shoes and they are in abutting contact with the member at five positions in the region of each of two planes spaced apart along the length of the member by a calculated optimum distance. In each plane, two of the abutting contact positions are on the first bearing surface, one is on the second surface, and the other two are on respective ones of the third and fourth surfaces in the region of a plane which is about midway between the first and second surfaces. The housing can be in one piece or it can comprise a part having a base and side walls defining a channel, and a part forming a cover for the mouth of the channel.
摘要:
A rolling slide has a bearing body supported by rolling elements which roll both on a closed surface of the body and on an internal surface of an endless belt surrounding the body. The endless belt is made up of a number of resiliently interconnected shoes some of which rest directly on the surface over which the slide moves.
摘要:
The rollers of a recirculating roller way bearing are crowned convexly to distribute the loading on each roller more uniformly across the entire length thereof and thereby increase the loadbearing capacity of the roller and to reduce skewing caused by excessive and unequal loading on the ends of the roller. Straptype retainers hold the rollers in the race of the bearing without guiding the rollers as they circulate so as to leave the bearings free to align themselves in the race.
摘要:
A machine having relatively movable parts with antifriction bearing assemblies located between the moving parts. The antifriction bearing assemblies are adjustably mounted by double wedge means whereby the proper amount of preload on the bearing assemblies can be readily obtained. In addition to the double wedge adjustment, the bearing assemblies can also be mounted so as to rock or tilt, within limits, to then thereby adapt themselves between the relatively moving parts to accommodate any misalignment and to facilitate assembly of the relatively movable parts.
摘要:
The invention relates to a vehicle seat with a roller guide, wherein the roller guide has at least one at least partially laterally open guide rail and at least one running roller rolling in the guide rail and connected to parts of the vehicle seat by means of at least one axle, wherein the guide rail comprises a roller bottom-side inner wall arranged parallel to a central axis of the running roller, extending parallel thereto a roller top-side inner wall and a roller outer-side inner wall arranged perpendicularly to the central axis, wherein at least one lower transition inner wall is arranged between the roller bottom-side inner wall and the roller outer-side inner wall and at least one upper transition inner wall is arranged between the roller top-side inner wall and the roller outer-side inner wall, wherein the transition inner walls are configured free from a right-angled portion and in directions from the roller top-side inner wall and the roller bottom-side inner wall towards the roller outer-side inner wall are configured with a continuously reducing spacing from the central axis of the running roller, wherein on an axial loading of the roller guide in the direction of the central axis of the running roller, a lower portion of an outer end portion at a first end of the running roller configured to face the roller outer-side inner wall lies with contact against the lower transition inner wall.
摘要:
A support device for the support of conveyed objects, includes a roller body with a series of rollers, which run along a path and support the conveyed objects in a support region. The rollers roll in the support region on a support surface. Thereby, the following steps are carried out: relieving the rollers on entering into a part region of the support region; aligning the relieved rollers; renewed loading of the rollers on leaving the part region of the support device. For this, at least one recess of the support surface is present in the support region, wherein a roller which is located in the region of the recess, may be moved into the recess.
摘要:
A bearing element for a linear roll guide comprises a carrier body in which a channel (7) for load-bearing rolling elements (8), a return channel (4) for returning rolling elements (5) and two arc-shaped deflecting channels, that connect said channels to each other for accommodating rolling elements to be deflected, are incorporated. According to the invention, the carrier body is made in the form of a thin-walled housing bushing (1) in which a first plastic insert (3) that guides the rolling elements (5) is arranged.