Series conical bearing outer ring one-piece flow lathing process

Abstract

The invention discloses a series conical bearing outer ring one-piece flow lathing process, belongs to the technical field of bearing outer ring lathing, and mainly solves the problems that an existing machining method is long in production procedure, low in production efficiency, high in labor intensity and the like. The process is mainly characterized in that a clamping system popup mechanism connects popup claws into a whole by means of an outer circular ring, more than one corresponding mounting hole is formed in each popup claw in the radius direction, the clamping end face of each clamping claw is consistent with a chamfering part of a workpiece in shape, the clamping claws are mounted on the popup claws, a conical bearing outer ring blank forge piece is sent to a first numerical control lathe by means of the clamping system popup mechanism to sequentially complete roller path lathing, inner chamfering lathing, back end face lathing and assembly chamfering lathing in a first sequence, and an outer ring machined part is taken out and sent to a second numerical control lathe to sequentially complete outer diameter lathing, outer chamfering lathing and inner chamfering lathing in a second sequence. The process is mainly used for mass production of series conical bearing outer rings with outer diameters phi of 40 mm to 200 mm, heights of 10 mm to 50 mm and inner holes phi of20 mm to 150 mm.

Description

technical field [0001] The invention belongs to the technical field of bearing outer ring turning, and in particular relates to a one-piece flow turning process of a series of tapered bearing outer rings. Background technique [0002] At present, the outer ring of this type of tapered bearing is mainly processed by conventional technology, and the technological process of processing the outer ring by conventional technology is: the blank is a forging, the outer diameter is φ40-200mm, the height is 10-50mm, the inner hole (raceway) is φ20- 150 mm, inner hole taper: first sequence (profiling hydraulic lathe), turning raceway, inner chamfering, rear end face → second sequence (copying lathe), outer diameter of turning, outer chamfering, inner chamfering →Third sequence (double end surface grinder), soft grinding of double end faces→fourth sequence (centerless grinder), soft grinding of outer diameter→five sequence (profile hydraulic lathe), fine imitation raceway, inner chamfer...

AI Technical Summary

Problems solved by technology

The disadvantages are firstly that due to the long process flow, manual loading and unloading, and many times of trolley handling, resulting in long production cycle, low production efficiency, high personal labor intensity, and prone to work-related injuries; Large mechanical stress and large deformation after heat treatment; when profiling hydraulic lathes process products, oil cooling is used, which pollutes the environment and is prone to process leakage

[0004] The currently equipped clamping system includes ejection claw 1, clamping claw 2 and ejection rod 5, wherein the ejection claw 1 is a three-claw structure with interactive middle and open outer ends, and guide holes are provided on the concentric circles only on the outside of the three claws 3. The pop-up lever 5 is installed on the guide hole 3, such as figure 1 As shown, the adjustment range of the collet is limited, and the minimum clamping range is the outer ring product 4 with an inner diameter of 120mm or more

Clamping jaws 2 such as figure 2 , image 3 As shown, it is not suitable to clamp the series of tapered bearing outer ring rough forgings. When clamping the series of tapered bearing outer ring rough forgings with large chamfers, the force-bearing area is often small, the clamping force is not enough, resulting in failure to clamp, or during operation There are safety hazards such as dumping

However, a large part of the forgings of the series of tapered bearing outer rings have an inner diameter below 120mm, so they cannot be used for automatic on-line processing of trusses on CNC lathes.

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