SU1479008A3 - Roller support - Google Patents

Abstract

A recirculating roller bearing structure for the high-accuracy rectilinear guidance of constructional units moving on each other comprises a main body (1) with component parts forming straight-line sections of an endless closed roller guiding raceway, raceway sections for reversing the motion of the rollers and a train of load-bearing rolling elements with recirculatory motion. Side-guide clamping grooves and retaining insert clamping grooves are formed in the main body (1) for engaging said main body (1) with side-guides (2) to ensure linear guidance of the rolling elements (5). Retaining inserts (3), which prevent the rolling elements (5) from dropping out of the roller shoe structure are connected to the main body (1), without using any binding or coupling element. <IMAGE>

Description

Jigl

The invention relates to roller bearings and can be used in devices in which it is necessary to provide a straight-line movement, for example, sleds, tables, etc.

The purpose of the invention is to simplify the design and increase reliability by eliminating the rolling bodies from falling out.

foot section. The bearing surface 2 of the housing and the surface 3 for the fastening bolts are made at different levels, which allows them to be processed independently of one another, which makes it possible to increase the accuracy and service life of the support.

On the end part of the support on top

before the support was installed in place and ensured, the input 15 and the output

ability to process the surface; load bearing, with great accuracy.

FIG. 1 shows the roller bearing section; in fig. 2 is the same, top view, in FIG. 3 - the same, side view; in fig. 4 is a section A-A in FIG. 3; FIG. 5 is a section B — B in FIG. 3 in FIG. 6d - section BB in FIG. four; in fig. 7 - body, cross section; in fig. 8 shows the mutual arrangement of the housing parts, rolling elements and retaining elements; in fig. 9 shows the mutual arrangement of the housing parts, the rolling elements, the retaining element; in fig. 10 shows the relative position of the rolling bodies and the transition arcs connecting the housing with the inlet section; FIG. 11 - section GG in FIG. 3, in FIG. 12 shows an embodiment with a fully enclosed return roller.

The roller bearing comprises a housing t with a supporting surface 2 and a surface 3 under the bolts 4, a working 5 and return 6 sections, end elements 7, rolling tracks 8 in which rolling bodies 9 are installed, made in the form of rollers with trunnions 10, which are held by holding elements 11.

The housing has grooves 12 in which retaining elements are placed that prevent the rolling elements from falling out of the fully assembled, but not installed, roller support assembly. In the end elements 7, lubrication holes are made, closed by plugs 13, and cleaning inserts 14 are fixed, which serve to clean the rolling surface of the guide element and prevent ingress of contaminants inside the roller bearing. End elements 7 are fastened to housing 1 with screws. The retaining elements 11 are connected to the body along the entire length without any connecting elements by installing in the trapezoidal grooves 12 sections 16 connected to the central part of the body by transition arcs with radius R-.

FIG. 12 retaining element

 11 is expanded and serves not only to keep rolling bodies 9 in the return area, but also fully provides anti-dust protection. To eliminate unnecessary stresses, a gap is provided between the upper plane of the holding member and the contact surface. .

The body and the rolling elements are made of high strength bearing steel. The remaining parts, with the exception of fixing bolts, can be made of soft or light metal of different strength and hardness.

Claims (3)

1. Roller bearing for high precision straight-line movement, comprising a housing with a supporting surface and a surface for fasteners you, working and return sites, the end elements forming transitions with the ends of the body, raceways in which are installed rolling elements in the form of rollers with trunnions and retaining elements, characterized in that, in order to simplify the construction and increase reliability, grooves, and the retaining elements are placed in said grooves. 2. Roller bearing according to claim 1, that is, that supports on the surface of the case and the surface under the mounting bolts are made at different levels, 3. Roller bearing according to claim 1, characterized in that the inlet and outlet surfaces are made at the end portion of the support surface of the body. areas connected to the central part of the body with transitional arc. 4-h v e. FIG. 2 , /four Hh A 5-5 // 5 figure 1 I f Phage.Z fi Tszig.6 12 Compiled by I.Teravsk I.Gorn's editor Tehred A. Kravchuk Proofreader S.Cherni Order 2380/59 Circulation 700 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Fm.8 Fi.g.9 YY Yu Fi, g. 12 Subscription