CN106050933A

CN106050933A - Retainer and crossed roller bearing provided with same

Info

Publication number: CN106050933A
Application number: CN201610577206.XA
Authority: CN
Inventors: 周树洲; 秦红星; 邵秀华
Original assignee: LUOYANG HONGYUAN BEARING TECHNOLOGY Co Ltd
Current assignee: LUOYANG HONGYUAN BEARING TECHNOLOGY Co Ltd
Priority date: 2016-07-21
Filing date: 2016-07-21
Publication date: 2016-10-26

Abstract

The invention discloses a retainer. The retainer comprises a barrel-shaped retainer body. Multiple cylindrical containing holes are formed in the outer circumferential face of the retainer body in the circumferential direction. A 45-degree included angle is formed between the central axis of each containing hole and the central axis of the retainer body. The central axes of the adjacent containing holes are perpendicular to each other. A protrusion is arranged on the portion, between every two adjacent containing holes, of the outer circumferential face. The invention further discloses a crossed cylindrical roller bearing. The retainer is added to the portions among rollers of the bearing; the movement state of the rollers is adjusted; and the lubricating oil storage spaces inside roller paths are increased so that high-speed movement performance of the crossed roller bearing can be improved.

Description

A kind of retainer and there is its crossed roller bearing

Technical field

The invention belongs to crossed roller bearing, particularly relate to a kind of retainer and there is its crossed roller bearing.

Background technology

Crossed roller bearing is to be existed by outer ring, an inner ring with 90 ° of V-type rolling channels and a group with 90 ° of V-type rolling channels A kind of special construction types of bearings of the roller composition of square crossing arrangement in two V-type rolling channels, can increase between adjacent rollers Add spacing block interval, it is also possible to be not added with spacing block (roller is in full dress state)；It is mainly used in the revolution of numerical control machining center Workbench, industrial robot joint position or rotation portion, accurate measurement test equipment etc., under the conditions of general use, its Running accuracy is higher, and bearing capacity is relatively strong, and axis rigidity is preferable；But this bearing due to when roller moves in raceway roller and Between spacing block or roller and roller, mutually collision and roller displacement guided bone are bad, and bearing operates in fair speed Time will produce vibration or slide, send noise even raceway spot temperature and steeply rise, therefore this bearing is general only exists Operating under low-speed conditions, but be as machinery and add the development and progress of technology, existing market is in the urgent need to a kind of higher rotation speed Crossed roller bearing occurs.

Summary of the invention

In order to solve the problem that existing crossed roller bearing exists, it is an object of the invention to provide a kind of retainer and have Its crossed roller bearing, by increasing retainer between roller, lubricating oil in adjusting roller movement state and increasing raceway Storage area improves the high-speed motion performance of crossed roller bearing.

In order to realize foregoing invention purpose, the present invention uses technical scheme as described below:

A kind of retainer, including the support body of tubular, the most uniform on the periphery of support body offers some cylinders Pocket hole, the central axis in pocket hole and the central axis of support body are 45 ° of angles, and the central axis in adjacent pocket hole is mutually perpendicular to, It is provided with projection on periphery between adjacent pocket hole.

A kind of crossed roller bearing, including inner ring, outer ring and roller, also includes above-mentioned retainer, and described roller is corresponding In the pocket hole being installed on retainer.

Further, described inner ring is split-type structural or integral structure.

Further, described outer ring is split-type structural or integral structure.

Owing to using technique scheme, the present invention has a following superiority:

1, the roller in conventional cross roller bearing is full complement or roller is spaced apart with some independent spacing blocks, And the crossed cylindrical roller bearing of the present invention is by using the retainer of monolithic construction uniformly to be kept apart by roller so that rolling Sub-stable movement is orderly, makes loading ability of bearing evenly, and moment of friction change fluctuation reduces, and beneficially bearing rotation precision is long-term Stable.

2, the guidance quality when retainer of the present invention adds roller movement, roller will not produce in motor process topples over With the movement tendency slided, be conducive to improving the rotating speed of bearing.

3, the space storing lubricating oil in the raceway of the crossed roller bearing of the present invention is strengthened, and advantageously reduces bearing movable During heat produce and distribute, the motion rotating speed of bearing can be greatly improved.

Accompanying drawing explanation

Fig. 1 is the structural representation of crossed roller bearing of the present invention；

Fig. 2 is the perspective view of retainer of the present invention；

In figure: 1, outer ring；2, inner ring；3, roller；4, support body；5, protruding；6, pocket hole.

Detailed description of the invention

Below in conjunction with the accompanying drawings and technical scheme is described in further detail by embodiment.

As in figure 2 it is shown, a kind of retainer, including the support body 4 of tubular, the most uniform on the periphery of support body 4 Offering some cylindrical pocket holes 6, the central axis in pocket hole 6 is 45 ° of angles with the central axis of support body 4, and adjacent pocket hole 6 Central axis be mutually perpendicular to, the periphery between adjacent pocket hole 6 is provided with protruding 5.

As it is shown in figure 1, a kind of crossed roller bearing, including inner ring 2, outer ring 1 and roller 3, also include above-mentioned retainer, In the pocket hole 6 that described roller 3 correspondence is installed on retainer.

Accordingly, the profile of the projection 5 on retainer 6 is suitable with the shape of the raceway on inside and outside circle.

Described inner ring 2 is integral type structure or is to be connected, by two halves inner ring, the split-type structural formed, and described outer ring 1 is Integral structure or for being connected, by two semi outer rings, the split-type structural that forms.

It should be noted that split type two halves inner ring or two semi outer rings are all by screw, rivet or retaining ring Connect composition integral inner ring or outer ring.

The crossed roller bearing of the present invention is compared with traditional crossed roller bearing:

1, the crossed roller bearing of the present invention have employed all-in-one-piece retainer, is uniformly kept apart by roller, and roller movement is steady In order；And traditional crossed roller bearing includes that two kinds of structures, one are to arrange spacing block in raceway for by roller Keeping apart, another kind is the structure (i.e. roller is full dress) being not added with spacing block, and this will be all mutual because of spacing block and roller Opposition motion unit and cause between roller and spacing block inconsistent in movement time gap, roller movement state is inconsistent, can With mutual extrusion and collision, it is also possible to simple sliding.

2, conventional cross roller bearing uneven makes bearing load carrying capacity uneven because roller is arranged in raceway, causes axle Holding change in friction force in operation process uneven, affect stablizing of bearing rotation precision, the present invention keeps by using monoblock type Shelf structure makes loading ability of bearing evenly, and moment of friction change fluctuation reduces, and beneficially bearing rotation precision is steady in a long-term.

3, conventional cross roller bearing because of spacing block less than normal and separate, the motion guided bone effect to roller is inconspicuous And cause roller to have the movement tendency toppling over and doing simple sliding in motor process；The retainer of the present invention is by pocket pore structure on it Design and protruding design substantially increase roller movement guidance quality, roller will not produce in motor process topples over and pure cunning Dynamic movement tendency, is conducive to improving the rotating speed of bearing.

4, there is spacing block between conventional cross roller bearing adjacent rollers or there is no spacing block (roller is in full dress shape State), in raceway, the memory space of grease is less；The keeper of the present invention is only provided with projection on periphery, at keeper Inner headed face on do not design projection, therefore there are on circular direction in keeper between adjacent rollers and cut off the space opened, The space so storing lubricating oil in raceway is strengthened, and during advantageously reducing bearing movable, heat produces and distributes, Ke Yi great The big motion rotating speed improving bearing.

Claims

1. a retainer, including the support body of tubular, the most uniform on the periphery of support body offers some cylinders Shape pocket hole, is characterized in that: the central axis in pocket hole and the central axis of support body are 45 ° of angles, and the central shaft in adjacent pocket hole Line is mutually perpendicular to, and the periphery between adjacent pocket hole is provided with projection.

2. a crossed roller bearing, including inner ring, outer ring and roller, is characterized in that: also include above-mentioned retainer, described rolling In the pocket hole that sub-correspondence is installed on retainer.

Crossed roller bearing the most according to claim 2, is characterized in that: described inner ring is split-type structural or integral type knot Structure.

Crossed roller bearing the most according to claim 2, is characterized in that: described outer ring is split-type structural or integral type knot Structure.