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A kind of bearing seal skeleton and preparation method thereof
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A technology of bearing seals and seals, which is applied in the field of mechanical parts processing, can solve the problems of high processing cost, large mold loss, and easy glue leakage, etc., to avoid edge burrs, improve material utilization, and reduce processing costs. Effect
Active Publication Date: 2022-03-18
山东中煤工矿物资集团有限公司
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Problems solved by technology
The skeletons of the bearing seals currently used are all stamped parts, which have many shortcomings: First, there are burrs on the edges of the stamped parts. When the seals are injected with glue, problems such as glue leakage and dimensional deviation are prone to occur, resulting in the scrapping of the seals.
Second, there will be a lot of punching allowance during stamping, resulting in waste of materials
The third is that the die loss in the punching process is relatively large, and the processing cost is relatively high
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preparation example Construction
[0025] as attached Figures 1 to 9 The preparation method of a skeleton of a bearing seal comprises the following steps:
[0026] S1 takes the annealed round steel wire as the raw material, and rolls it into a rectangular cross-section steel wire with a transition fillet r;
[0027] The S2 rectangular steel wire is bent to form an open ring, and beveled into a certain groove 23 when cutting;
[0028] S3 is at the opening of the ring, through a cold welding machine, using low-carbon steel wire as the solder for cold welding to form a closed ring;
[0029] S4 The welded ring is placed on a weld point flat grinder to grind excess welding material to form a seal skeleton with a flat end face.
[0030] The invention adopts pressure forming and grinding to remove solder joints to process the skeleton of the sealing member. Compared with the existing punching process, no punching allowance will be generated, thereby improving the material utilization rate and reducing the cost.
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specific Embodiment
[0047] The skeleton of the bearing seal uses low-carbon steel wire as the raw material, and the material composition weight percentage is: C% 0.12%, Mn0.30%, S≤0.045%, P≤0.045%. Firstly, it is rolled continuously through multiple passes to form a rectangular cross-section steel wire. Then it is wound into a split ring by a spring winding machine, and the bevel is cut, as attached figure 2 As shown, after cold welding, and the welding point is polished, with image 3 As shown, the final bearing seal skeleton was obtained.
[0048] The formed bearing seal skeleton has a diameter d of 29.4 mm, a radial thickness a of 1.65 mm, a ring height h of 1 mm, and a fillet r of 0.3 mm.
[0049] The specific bearing seal skeleton preparation process includes the following steps:
[0050] Selection of raw materials: select low-carbon steel wire with a diameter of φ1.5mm, and the raw material is annealed;
[0051] Rolling and forming: through a round of flattening to form a flat wire with...
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Abstract
The invention discloses a method for preparing a skeleton of a bearing seal, which comprises the following steps: taking annealed round steel wire as a raw material, forming it into a steel wire with a rectangular cross-section with a transition fillet r through rolling; bending the rectangular steel wire to form an opening When cutting the ring, cut it obliquely to a certain groove; at the opening of the ring, through a cold welding machine, use low-carbon steel wire as the solder for cold welding to form a closed ring; place the welded ring on the welding Grinding excess welding consumables on a spot grinder to form a skeleton of a seal with a flat end face. The invention can improve the service performance of the skeleton of the sealing element, improve the production stability of the skeleton of the sealing element, simplify the processing flow, and thereby reduce the production cost.
Description
technical field [0001] The invention relates to the field of mechanical parts processing, in particular to a skeleton of a bearing seal and a preparation method thereof. Background technique [0002] The skeleton of the bearing seal is used as a support for the sealing rubber to improve the service strength of the seal and ensure the stable operation of the bearing. The skeletons of the bearing seals currently used are all stamped parts, which have many disadvantages: First, there are burrs on the edges of the stamped parts. When the seals are injected with glue, problems such as glue leakage and dimensional deviation are prone to occur, resulting in the scrapping of the seals. The second is that a lot of punching allowance will be generated during stamping, resulting in waste of materials. The third is that the die loss in the punching process is relatively large, and the processing cost is relatively high. In order to improve the quality of bearing seal skeleton products...
Claims
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