Engineering plastic bearing cage

A technology of engineering plastics and cages, which is applied to bearing components, shafts, shafts and bearings, etc., can solve the problems that it is difficult to adapt to high-precision bearings, thick-walled holes are prone to defects, and the accuracy of cages is difficult to guarantee. Hole defects, shorter molding cycle, no effect on strength

Pending Publication Date: 2020-04-17
北京隆轩橡塑有限公司
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Problems solved by technology

Based on the design of original metal products, the injection molded cage window beams are generally designed to be thicker, and the diameter of the inscribed circle is generally greater than 5mm. Such wall thickness leads to uneven shrinkage of the cage, making it difficult to guarantee the accuracy of the cage. The interior of the wall is prone to void defects
In the process of product design, the method of increasing the tolerance range is often adopted to avoid the defect of insufficient precision caused by the thick wall of the product, but it is difficult to meet the requirements of high-precision bearings

Method used

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  • Engineering plastic bearing cage
  • Engineering plastic bearing cage
  • Engineering plastic bearing cage

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0026] like Figure 1~3 As shown, the present invention provides an engineering plastic cage, which includes a cage main body 1, on the cage main body 1 and along its circumference, several window holes 11 for installing rollers are arranged at intervals, and two adjacent windows A window beam 12 is formed between the holes 11; a notch 13 is provided on the outer diameter side of each window beam 12 to reduce the wall thickness of the window beam 12 of the cage main body 1, so that the wall thickness of the cage main body 1 can be reduced during the injection molding process. More uniform and stable shrinkage in the middle, improve the precision of the ...

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Abstract

The invention discloses an engineering plastic bearing cage. The engineering plastic bearing cage is characterized by comprising a bearing cage body, a plurality of window openings used for installingrollers are formed in the bearing cage body at intervals in the circumferential direction of the bearing cage body, and a window beam is formed between every two adjacent window openings. Notches areformed in the outer-diameter sides of the window beams respectively. The wall thickness of the window beams of the bearing cage body can be reduced, the wall thickness of the bearing cage body is more uniformly and stably shrunk in the injection molding process, and the precision of the engineering plastic bearing cage is improved.

Description

technical field [0001] The invention relates to an engineering plastic cage, in particular to an engineering plastic cage applied to wheel axle bearings of railway locomotives. Background technique [0002] The existing railway locomotive wheel axle bearings generally use glass fiber reinforced engineering plastic cages to replace traditional steel cages and copper cages, and are formed by injection molding at one time. Based on the design of original metal products, the injection molded cage window beams are generally designed to be thicker, and the diameter of the inscribed circle is generally greater than 5mm. Such wall thickness leads to uneven shrinkage of the cage, making it difficult to guarantee the accuracy of the cage. The interior of the wall is prone to void defects. In the process of product design, the method of increasing the tolerance range is often adopted to avoid the defect of insufficient precision caused by the thick wall of the product, but it is diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/46F16C33/66
CPCF16C33/4635F16C33/6614F16C33/6629F16C2326/01
Inventor 陶国安刘凤山田少波戴福福
Owner 北京隆轩橡塑有限公司
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