The development of the new type of rolling bearing joints

The development of new type of rolling bearing joints, 2019 - 05 - 07 Su Hanye ( West of the international medical co. , LTD. ) Belong to the sliding bearing, joint bearing is mainly composed of an outer sphere of inner ring and an inner spherical outer ring. Commonly used for low speed swinging motion, tilt motion and rotation motion. Relative to the rolling bearing, and its simple structure, small volume and large carrying capacity, widely used in industrial and agricultural machinery, aerospace, mining, metallurgy, printing, textile, railway, automobile and ship, etc. Joint bearing is working, relative sliding inside and outside the circle, how to effectively reduce the friction, reducing wear and prolong the service life is the key of the research. In this paper, a new type of rolling bearing joints, Hereinafter referred to as the 'new type of bearing) Can implement swing motion, instead of the traditional joint bearing adopts the needle roller bearing between the component parts of rolling movement for transmission, can significantly reduce the friction coefficient, reduce wear and prolong service life. 1 new type bearing structure of the new type bearing is mainly composed of main body, cage, shaft installation, drawn cup needle roller bearing and the shaft pin ( See figure 1) 。 The cylinder of the subject of the two concentric hole through the shaft pin coupling cage structure. Cage ( See figure 2) On the X axis and Y axis respectively has two concentric hole, used to install stamping outer ring needle roller bearing; To reduce the oscillation occurred in the process of dynamic and improve precision of the swing, four bearing mounting holes should be distributed in the same plane; Maintains a V groove design main consideration among installation axis swing avoid; Installed between shaft and cage through the shaft pin and stamping outer ring rolling bearing coupling. Figure 1 rolling joint bearing structure schematic 1. The main body; 2. Shaft pin; 3. Drawn cup needle roller bearing; 4. Cage; 5. Bracket will be installed shaft figure 2 2 working principle of the new type of bearing the workings of a new type of bearing for the swing movement, swinging principle as the main body with a fixed by screw parts ( As the base) Join together, install axis relative to the subject in a certain range can be arbitrary, its swing swing motion can be divided into single shaft and biaxial swing. As shown in figure 3, when installing shaft around the X axis swing in YOZ plane, two needle roller bearing rolling on the X axis, Y axis bearing static, two cage of body static; When installing axis around Y axis swing in XOZ plane, two needle roller bearing rolling on the Y axis, two on the X axis bearing static, cage and install axis relative static, cage shaft at the same time around the Y axis swing and installation. Above two situations is called single spindle swing, swing the only X or Y axis bearing rolling separately. Figure 3 single axle swinging sign for 1. The main body; 2. Cage; 3. Installed shaft as shown in figure 4, when the installation outside any axis around the X, Y axis axis swing in any plane, the X axis and Y axis 4 needle roller bearing at the same time corresponding rolling, cage and install axis relative to the subjects of corresponding oscillation respectively. When the above condition called biaxial swing, swing the X or Y axis and the bearing rolling at the same time. Figure 4 biaxial swinging sign for 1. The main body; 2. Cage; 3. Install 3 new bearing characteristics of new type bearing structure is simple, swinging motion process by needle bearing rolling line contact friction movement, rolling friction instead of sliding friction, low friction coefficient, long service life; Line contact instead of surface contact, the contact stress is large, the rated load is low. Relative to the traditional joint bearing, this new type of bearing which can realize high speed swinging motion, with low coefficient of friction and long service life and rated load is relatively low. Needle roller bearing for the swing movement of key support components, prices are cheap and popular on the market to buy, when needle roller bearing wear failure after replacement can be removed. 4 summary introduced a new type of the structure of the rolling bearing joints, has simple structure, low friction coefficient, long service life and replaceable parts, can replace traditional joint bearing achieve oscillating motion. Source: the metal processing ( Cold working) Magazine,