CN201239916Y - Trimming device for miniature bearing forming roller - Google Patents

Abstract

The utility model discloses to current emery wheel finishing device, it packs into two sets of angular contact ball bearings in the base, and cooperate with the main shaft, withstand the bearing inner race by the end cover, make synchronous pulley pressurize in bearing pretension packing ring through lock nut, in the rethread bearing, the play is paird with the bearing in advance to the outer packing ring, thereby reach pretension bearing's purpose, for guaranteeing the life of bearing, pack into two oil sealings in the end cover, diamond shaping gyro wheel passes through the nut pretension, the shaping gyro wheel head is U font structure, it is full of diamond particles above, just like a single-point diamond finishing pen, therefore the great hidden danger of roughness fluctuation has been solved, can control roughness Ra at 0.16 ~ 0.28 mu m.

Description

The trimming device of miniature bearing shaping roller

Technical field

The utility model belongs to the bearing trimming device, the trimming device of a kind of miniature bearing shaping roller of more specifically saying so.

Background technology

Single-point finishing is adopted in the ditch grinding abrasive disk trimming of present domestic bearing industry Internal and external cycle, diamond pen finishing just.Because a single-point diamond nib very easily weares and teares, thereby cause curvature problem bigger than normal often, the diamond pen nib is difficult to be controlled at the positive center of matrix, the phenomenon that also has center of curvature off-centre often, add trimmer design in addition unreasonable cause curvature can only be controlled at ± 2.5si about, can't satisfy the requirement of bearing ring curvature precision at all, also brought simultaneously the bigger problem of roughness fluctuation, usually Ra is 0.35～0.58, and the requirement of the roughness of miniature bearing is less than 0.32, the Silk Road that its roughness requirement directly affects super Seiko preface reaches the requirement to super Seiko preface roughness, and remote-effects the service life of the decibel value and the bearing of bearing.

Summary of the invention

The utility model is at existing wheel dresser, provides a kind of emery wheel after guaranteeing to repair the curvature precision can be controlled at ± trimming device of miniature bearing shaping roller in the 1si.

The trimming device of miniature bearing shaping roller, its two cover angular contact ball bearings 8 of in pedestal 1, packing into, 11, and match with main shaft 4, by end cap 2,3 withstand bearing outer ring, make synchronous pulley 14 apply pressure to bearing pre-tightened packing ring 12 by locking nut 15, again by in the bearing, outer washer 9,10 prior and bearings 8,11 carried out the play pairing, thereby reach the purpose of preloaded bearing, for guaranteeing the service life of bearing, at end cap 2, pack 7 in 3 into, two on 13 oil sealings, diamond shaping roller 6 is by nut 5 pretensions, the shaping roller head is a U font structure, is covered with diamond particles above, and one just as same single-point diamond finishing pen, thereby solved the bigger hidden danger of roughness fluctuation, roughness Ra can be controlled at 0.16～0.28um.

The shaping roller machining bearing of the utility model finishing, can make and make inside and outside raceway groove maximum stress value close by the design of bearing enclose raceway groove disparity curvature, be controlled at ± 1si about, help reducing bearing friction like this, being convenient to bullet stream oil film forms, reduce vibration and noise, improve the performance of bearing.

Description of drawings

Fig. 1 is original diamond pen finishing schematic diagram.

Fig. 2 is the utility model structural representation.

1-pedestal among the figure, 2-drive end bearing bracket, 3-rear end cap, 4-main shaft, 5-nut, 6-shaping roller, 7-oil sealing, 8-bearing, 9-bearing inner washer, 10-bearing outer washer, 11-bearing, 12-bearing pre-tightened packing ring, 13-oil sealing, 14-synchronous pulley, 15-nut.

The specific embodiment

A kind of trimming device of miniature bearing shaping roller, its two cover angular contact ball bearings 8,11 of in pedestal 1, packing into, and match with main shaft 4, withstand bearing outer ring by end cap 2,3, make synchronous pulley 14 apply pressure to bearing pre-tightened packing ring 12 by locking nut 15, carrying out play with bearing 8,11 in advance by the inside and outside packing ring of bearing 9,10 again matches, thereby reach the purpose of preloaded bearing, for guaranteeing the service life of bearing, in end cap 2,3, pack into two on 7,13 oil sealings, shaping roller 6 heads are U font structure, are covered with diamond particles above.The emery wheel machining bearing of the utility model finishing, can make make by the design of bearing enclose raceway groove disparity curvature inside and outside the raceway groove maximum stress value close, be controlled at ± 1si about, help reducing bearing friction like this, be convenient to bullet stream oil film and form, reduce vibration and noise, improve the performance of bearing.

Claims (2)

1, the trimming device of miniature bearing shaping roller, it is by pedestal, drive end bearing bracket, rear end cap, main shaft, nut, shaping roller, oil sealing, bearing, bearing inner washer, bearing outer washer, bearing, bearing pre-tightened packing ring, oil sealing, synchronous pulley, nut is formed, and it is characterized in that: two cover angular contact ball bearings are arranged in pedestal, and match with main shaft, shaping roller is loaded on the main shaft, and inside and outside packing ring of bearing and bearing carried out the play pairing.

2, the trimming device of miniature bearing shaping roller according to claim 1 is characterized in that: the shaping roller head is a U font structure, is covered with diamond particles above.

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