CN206000870U - Inner wrap strip fore shaft bearing - Google Patents

Abstract

Utility model is related to mechanical field, is related to a kind of bearing, refers in particular to a kind of inner wrap strip fore shaft bearing.Inner wrap strip fore shaft bearing, including inner ring and outer ring, the quenching hardness of described outer ring and inner ring is 62 degree of HRC61, groove is provided with outer ring inner ring face and inner ring outer ring surface, side 4.06MM is enclosed in outer ring channel slot distance outer ring, inner ring groove is 4.00MM apart from inner ring circle side, described flute surfaces roughness is 0.02 μm, its radius of curvature is 1.746MM, inner ring inner ring side is fillet, cork cot is provided with inner ring outer ring surface, cork cot is in 2 ° ± 3 ' with horizontal direction, cork cot is mutually matched with the fore shaft of fixed retainer and is connected, retainer spin is positioned by retainer, it is then embedded in the groove of described outer ring and inner ring, while the two sides between inner ring and outer ring is provided with sealing ring.The advantage of utility model is：Inner wrap strip fore shaft, inner ring are stable difficult for drop-off, environmental protection, at a high speed, accurate.

Description

Inner wrap strip fore shaft bearing

Technical field

Utility model is related to mechanical field, is related to a kind of bearing, refers in particular to a kind of inner wrap strip fore shaft bearing.

Background technology

Bearing is a kind of important spare part in contemporary plant equipment.Its major function is supporting machinery rotary body, reduces Coefficient of friction in its motion process, and ensure its rotating accuracy, it is the complete sets of basic equipment part of modern machine, is machine finish The foundation stone that index ensures, therefore its performance can directly influence the rotating speed of lathe, rotating accuracy, rigidity, trembling vibration cutting ability, Noise, temperature rise and thermal deformation, and then have influence on the precision of processing part, surface quality.In tradition machinery or common mechanical, turn Speed mainly goes to thousand of rpms hundreds of.With the fast development of Numeric Control Technology, " compound, at a high speed, intelligence, precision, ring Protect " become the main trend that current machine tool industry technology develops, because High-speed machining can effectively improve the processing of lathe Efficiency, the process-cycle of shortening workpiece.Modern High-Speed machining tool, spindle speed require reach tens of thousands of go to ten tens of thousands of turns per point Clock.This requires that machine tool chief axis and its associated components will adapt to the demand of High-speed machining, and the requirement to bearing proposes brand-new Require.Especially there is higher requirement to the inner ring functional of bearing.

Utility model content

The purpose of utility model is for the problems referred to above, there is provided a kind of inner wrap strip fore shaft, inner ring is stable to be difficult to take off Fall, environmental protection, at a high speed, accurate band dense block buckle shaft is held.

For reaching above-mentioned purpose, utility model employs following technical proposal：Inner wrap strip fore shaft bearing, including inner ring and outward Circle, it is characterised in that the quenching hardness of described outer ring and inner ring is HRC61-62 degree, on outer ring inner ring face and inner ring outer ring surface It is provided with groove, side 4.06MM is enclosed in outer ring channel slot distance outer ring, inner ring groove is 4.00MM apart from inner ring circle side, described ditch Rooved face roughness is 0.02 μm, and its radius of curvature is 1.746MM, and inner ring inner ring side is fillet, arranges on inner ring outer ring surface There is cork cot, cork cot is in 2 ° ± 30 ' with horizontal direction, and cork cot is mutually matched with the fore shaft of fixed retainer and is connected, spin Positioned by retainer, be then embedded in the groove of described outer ring and inner ring, while the two sides peace between inner ring and outer ring Equipped with sealing ring.

In above-mentioned inner wrap strip fore shaft bearing, the hold depth of described fore shaft is 0.04MM.

In above-mentioned inner wrap strip fore shaft bearing, described spin is silicon nitride ceramic ball.

In above-mentioned inner wrap strip fore shaft bearing, the radius of curvature of described inner ring inner ring side fillet is 0.5MM.

In above-mentioned inner wrap strip fore shaft bearing, described spin is 15 ° with the contact angle of groove.

As spin replaces steel ball using silicon nitride ceramic ball, inertia can be reduced, therefore bearing start rapid or During stopping, the active force that retainer bears can be reduced, improve bearing stability, and outer ring inner ring face and inner ring outer ring surface On be provided with groove, side 4.06MM is enclosed in outer ring channel slot distance outer ring, and inner ring groove is 4.00MM apart from inner ring circle side, described Flute surfaces roughness is 0.02 μm, and its radius of curvature is 1.746MM, reduces the end-play of bearing, can improve bearing rotation Turn precision.The contact angle of spin and groove is 15 °, can bear radial load and axial load simultaneously, very big improves spin Rotating speed, greatly improve the rotating speed of spin, in high-speed rotation, retainer realize to spin guiding positioning, it is possible to reduce Collide and rub, so as to reduce bearing intensification, extend the working life of lubricant, the two sides between inner ring and outer ring is provided with close Seal, preventing in bearing working grease from departing from bearing, while also solving the phenomenon that grease pollutes environment, improving bearing The feature of environmental protection.Cork cot is provided with inner ring outer ring surface, and cork cot is in 2 ° ± 30 ' with horizontal direction, and cork cot is kept with fixing The fore shaft of frame is mutually matched connection, and the hold depth of fore shaft is 0.04MM, by the cork cot of setting and fore shaft phase on inner ring outer ring surface Mutually coupling connection, so that inner ring is locked together with retainer, it is therefore prevented that the phenomenon that inner ring is come off when running.Inner ring and outer ring The material for being adopted is bearing steel, improves its intensity, and quenching hardness is HRC61-62 degree, increases bearing stability.

Compared with prior art, the advantage of utility model is：1st, silicon nitride ceramic ball is adopted, spin product can be reduced Raw inertia, improves antiwhip.2nd, the flute surfaces roughness being respectively provided with outer ring inner ring face and inner ring outer ring surface It is 1.746MM for 0.02 μm of radius of curvature, and groove is 15 ° with the contact angle of spin, improves bearing rotation precision and speed. 3rd, the cork cot by arranging on inner ring outer ring surface is mutually matched for the fore shaft of 0.04MM with hold depth and is connected, and makes inner ring and retainer Lock together, make bearing inner race stable difficult for drop-off.

Description of the drawings

In order to be illustrated more clearly that utility model embodiment or technical scheme of the prior art, below to by embodiment or Needed for description of the prior art, accompanying drawing to be used is briefly described, it is therefore apparent that drawings in the following description are only real With some new embodiments, for those of ordinary skill in the art, without having to pay creative labor, go back Other accompanying drawings can be obtained according to these accompanying drawings.

Fig. 1 is inner ring structure schematic diagram of the present utility model.

Fig. 2 is rough schematic view of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in utility model embodiment, the technical scheme in utility model embodiment is carried out clearly Chu, complete description, it is clear that described embodiment is only to invent a part of embodiment, rather than whole embodiments.Base Embodiment in utility model, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made Other embodiment, belongs to the scope of utility model protection.

As shown in Figure 1, 2, inner wrap strip fore shaft bearing, including inner ring 1 and outer ring 2, it is characterised in that described 2 He of outer ring The quenching hardness of inner ring 1 is HRC61-62 degree, is provided with groove 3,2 groove of outer ring on 2 inner ring surface of outer ring and 1 outer ring surface of inner ring 3 enclose side 4.06MM apart from outer ring 2, and it is 4.00MM that 1 groove 3 of inner ring encloses side apart from inner ring 1, and described 3 surface roughness of groove is 0.02 μm, its radius of curvature is 1.746MM, and 1 inner ring side of inner ring is fillet, is provided with cork cot 4 on 1 outer ring surface of inner ring, lock Mouth side 4 is in 2 ° ± 30 ' with horizontal direction, and cork cot 4 is mutually matched with the fore shaft 6 of fixed retainer 5 and is connected, and spin 7 is by protecting Hold frame 5 to position, be then embedded in the groove 3 of described outer ring 2 and inner ring 1, while the two sides peace between inner ring 1 and outer ring 2 Equipped with sealing ring 8.

In the present embodiment, as spin 7 replaces steel ball using silicon nitride ceramic ball, inertia can be reduced, therefore axle Hold when starting or stoping rapidly, the active force that retainer 5 bears can be reduced, improve bearing stability, and in outer ring 2 Groove 3 is provided with anchor ring and 1 outer ring surface of inner ring, and 2 groove 3 of outer ring encloses side 4.06MM, 1 groove of inner ring, 3 distance apart from outer ring 2 It is 4.00MM that inner ring 1 encloses side, and described 3 surface roughness of groove is 0.02 μm, and its radius of curvature is 1.746MM, reduces bearing End-play, bearing rotation precision can be improved.

Spin 7 is 15 ° with the contact angle of groove 3, can bear radial load and axial load simultaneously, very big improves rolling The rotating speed of ball 7, greatly improves the rotating speed of spin 7, and in high-speed rotation, retainer 5 is realized to the guiding positioning of spin 7, can Collided with reducing and rub, so as to reduce bearing intensification, extend the working life of lubricant, the two sides between inner ring 1 and outer ring 2 Sealing ring 8 is installed, is prevented in bearing working grease from departing from bearing, while the phenomenon that grease pollutes environment is also solved, carries The feature of environmental protection of bearing is risen.

Be provided with cork cot 4 on 1 outer ring surface of inner ring, cork cot 4 is in 2 ° ± 30 ' with horizontal direction, cork cot 4 with fixing The fore shaft 6 of retainer 5 is mutually matched connection, and the hold depth of fore shaft 6 is 0.04MM, by the cork cot 4 arranged on 1 outer ring surface of inner ring It is mutually matched with fore shaft 6 and is connected, so that inner ring 1 is locked together with retainer 5, it is therefore prevented that what inner ring 1 was come off when running shows As.The material adopted by inner ring 1 and outer ring 2 is bearing steel, improves its intensity, and quenching hardness is HRC61-62 degree, makes bearing Stability increases.

Utility model preferred embodiment is the foregoing is only, not in order to limit utility model, all in utility model Spirit and principle within, any modification, equivalent substitution and improvement that is done etc., should be included in the protection domain of utility model Within.

Claims (5)

1. inner wrap strip fore shaft bearing, including inner ring and outer ring, it is characterised in that the quenching hardness of described outer ring and inner ring is Groove is provided with HRC61-62 degree, outer ring inner ring face and inner ring outer ring surface, and side 4.06MM is enclosed in outer ring channel slot distance outer ring, interior Circle groove is 4.00MM apart from inner ring circle side, and described flute surfaces roughness is 0.02 μm, and its radius of curvature is 1.746MM, Inner ring inner ring side is fillet, is provided with cork cot on inner ring outer ring surface, and cork cot is in 2 ° ± 30 ' with horizontal direction, cork cot It is mutually matched with the fore shaft of fixed retainer and is connected, spin is positioned by retainer, is then embedded into described outer ring and inner ring Groove in, while the two sides between inner ring and outer ring is provided with sealing ring.

2. inner wrap strip fore shaft bearing according to claim 1, it is characterised in that the hold depth of described fore shaft is 0.04MM.

3. inner wrap strip fore shaft bearing according to claim 1, it is characterised in that described spin is silicon nitride ceramic ball.

4. inner wrap strip fore shaft bearing according to claim 1, it is characterised in that the curvature of described inner ring inner ring side fillet Radius is 0.5MM.

5. inner wrap strip fore shaft bearing according to claim 1, it is characterised in that described spin with the contact angle of groove is 15°.