Machining Method of Tapered Rolling Elements with Pillar Holes in Extra-Large Bearings
A processing method and pillar hole technology, which is applied to the processing field of super-large bearings with pillar holes and tapered rolling elements, can solve the problems of inability to meet the quality requirements of bearing users, unstable rolling outer diameters, and inconsistent circular chamfers at large and small ends, etc. problems, to achieve the effect of saving production and material consumption, reducing turning steps, improving product quality and production efficiency
Active Publication Date: 2017-10-31
BAOTA IND CO LTD
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Problems solved by technology
In addition, this type of rolling body is processed by a single person and a single machine. Due to the influence of the machine tool and the skill level of the operator, the outer diameter of each rolling body is unstable, the spherical surface of the large end cannot meet the requirements, and the arc chamfering of the large and small ends is not uniform. It affects the appearance quality of the entire batch of bearing products, and cannot meet the increasing quality requirements of bearing users
Method used
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Embodiment 1
[0019] The applicant changed the post-drilling process of such rolling elements to a C620 (universal) lathe with a double top clamp to process the small end outer diameter and the end face as the clamping reference, and then the modified C630 CNC lathe completed the internal clamping once. , outer diameter conical surface, large end spherical surface, height and chamfering of each R part. That is to say, the work of multiple clamping of the rolling body on the C620 lathe is completed by one clamping of the C630 CNC lathe transformed into a numerical control.
[0020] The improved process of the present invention is: use C620 lathe to rough-machine the outer diameter end face benchmark → turn around the flat width allowance, punch the center hole → turn the drilling machine to drill the inner hole (such as figure 1 Shown)→Back to the lathe with two pointed tops to make small end finishing datum (such as figure 2 Shown)→Use the CNC lathe to clamp the large end spherical surfac...
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The invention relates to a machining method of extra-large bearing cone rolling bodies with supporting column holes. The machining method is characterized by comprising the steps of adopting a lathe for turning the standard of the external diameter end surface in a rough machining mode; turning full width and allowance around and punching center holes; rotating a drilling machine for drilling inner holes; returning to the lathe for turning the finish machining standard of small ends through two centres; adopting a digitally-controlled lathe for turning large-end-surface spherical surfaces, internal-diameter and external-diameter conical surfaces and arc chamfers through one-time clamping; turning precise-leveling panel height, the internal-diameter and external-diameter conical surfaces of the small ends and the arc chamfers around. The machining method has the advantages that the machining steps of the extra-large bearing cone rolling bodies with the supporting column holes are simplified, the occupancy rate of machine tools and operating personnel is lowered by 50%, the product quality and the production efficiency are improved integrally, the labor intensity of processes of the lathe is lowered, the machining amount of processes of a grinding machine is lowered, cylindrical mandrels are avoided, manufacturing and material consuming of the cylindrical mandrels are avoided, and the production cost is lowered.
Description
technical field [0001] The invention relates to a processing method of a tapered rolling body with a pillar hole of an extra-large bearing. Background technique [0002] Due to the large product size, heavy single grain weight (14kg-18kg), large difference in the outer diameter of the large and small ends, and difficult processing, the rolling elements of extra-large bearings with pillars are difficult to process. Professional machine tools for rolling element processing are not capable of processing. Machining on the lathe C620, the lathe processing process is: roughing the outer diameter, using the end face as the reference plane → turning the flat width allowance, drilling the center hole → turning to the drilling machine for drilling (see figure 1 Shown) → Return to the lathe and use the two top flat cars to produce one end face and the outer diameter as the clamping reference (see figure 2 Shown) → U-turn clamping reference, flat width and inner hole cone surface, arc...
Claims
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IPC IPC(8): B23P15/00F16C33/34
CPCB23P15/00F16C33/34
Inventor 吕国新许建业胡兴吴义强吴征唐玉环吴俊杰李国庆刘永静吴兴平
Owner BAOTA IND CO LTD