CN207921130U - High-precision low-noise vibrating machine bearing - Google Patents

Abstract

The utility model discloses high-precision low-noise vibrating machine bearings, are related to mechanical bearing field.High-precision low-noise vibrating machine bearing includes bearing outer ring, cylindrical roller, retainer and bearing inner race, which is used for and cylindrical roller is used cooperatively, and the end face of the cylindrical roller is ball basal plane, it is characterised in that：The bearing inner race includes keeping off outside two inner rings of outer race end and being kept off in the inner ring in the middle part of bearing inner race outer shroud, gear and inner ring form the roller storage tank for accommodating cylindrical roller in the inner ring between keeping off outside, and the matched middle retaining inner wall in end face of gear and cylindrical roller is planar wall in the inner ring.The shape of retaining inner wall, planar wall is changed to by arcwall before in the optimization of this bearing inner race so that the contact area of the end face of cylindrical roller and middle retaining inner wall reduces, and to reduce the friction coefficient of Bearing inner, reduces the noise in bearing working, it is poor to improve bearing accuracy.

Description

High-precision low-noise vibrating machine bearing

Technical field

The utility model is related to mechanical bearing field, especially a kind of high-precision low-noise, vibration rolling universal bearing.

Background technology

Bearing is the part of a support shaft, has the rotation of leading axle or bears the purposes of idle running part on axis, generally For bearing refer to rolling bearing.

Taking it by and large the basic structure of rolling bearing is generally made of inner ring, outer ring, rolling element and retainer, wherein inner ring Effect be to be matched with axis, and rotate together with the axis, outer ring effect be to be matched with bearing block, play a supportive role, rolling element It is between rolling element is uniformly distributed in inner ring and outer ring by means of retainer, shape size and quantity directly affect rolling The performance of dynamic bearing and service life, retainer can be such that rolling element is uniformly distributed, prevent rolling element from falling off, guiding rolling element rotation Play lubricating action.

Bearing in the prior art is because vibrate high-precision low-noise vibrating machine bearing in the process of work, due to shaking It is dynamic to will produce Wen Sheng.

Utility model content

To solve the above problems, this practical information provides a kind of bearing inner race, which passes through inner ring storage tank side The optimization of wall and the optimization of rolling element and raceway solve bearing because generation bearing heating of vibrating, rub, vibrating noise are excessive The problem of.In addition, the utility model also provides a kind of high-precision low-noise vibrating machine bearing using inner bearing inner ring.

To achieve the above object, the technical solution adopted in the utility model is：

High-precision low-noise vibrating machine bearing, which includes bearing outer ring, cylinder Roller, retainer and bearing inner race, which is used for and cylindrical roller is used cooperatively, and the end face of the cylindrical roller is ball Basal plane, it is characterised in that：The bearing inner race includes that bearing inner race is kept off and be located at outside two inner rings of outer race end It is kept off in inner ring in the middle part of outer shroud, the roller that gear and inner ring are formed between keeping off outside for accommodating cylindrical roller in the inner ring is accommodating Slot, the matched middle retaining inner wall in end face of gear and cylindrical roller is planar wall in the inner ring.

Preferably, it is planar wall to keep off the inner wall opposite with roller storage tank outside the inner ring.

Preferably, the roller storage tank is leaned outward on the basis of the radial center plane of symmetry of the bearing inner race Tiltedly.

Preferably, the angle formed between the middle retaining inner wall and the radial center plane of symmetry of the bearing inner race is Angle A, angle A are more than 0 °, are less than 9 °.

Preferably, the thickness for keeping off root outside the inner ring is more than the thickness on top.

Preferably, the junction of the bottom wall of the roller storage tank and the middle retaining inner wall forms the of arc angling One slot；The junction of the inner wall kept off outside the bottom wall and the inner ring of the roller storage tank forms the first slot of arc angling.

Preferably, the annular surface of the cylindrical roller and the contact rate of raceway are 0.95%；The cylindrical roller The contact rate of end face and middle retaining inner wall is 0.89%.

In addition, the utility model proposes a kind of high-precision low-noise vibrating machine bearing, the high-precision low-noise bobbing machine Tool bearing includes bearing outer ring, cylindrical roller, retainer and any one of them bearing inner race as above.

Using the utility model has the beneficial effects that：

In this high-precision low-noise vibrating machine bearing, the shape of retaining inner wall in bearing inner race optimization, by arc before Wall is changed to planar wall so that the contact area of the end face of cylindrical roller and middle retaining inner wall reduces, to reduce rubbing for Bearing inner Coefficient is wiped, the noise in bearing working is reduced, it is poor to improve bearing accuracy.The inner wall opposite with roller storage tank is kept off outside inner ring to be changed to Planar wall also has the advantages that same.

Roller storage tank is inclined outwardly on the basis of the radial center plane of symmetry of the bearing inner race, while by middle retaining inner wall The angle that is formed between the radial center plane of symmetry of the bearing inner race is idle within limits so that middle retaining inner wall and When the state that cylindrical roller end face contact area reduces, middle retaining inner wall not support cylindrical roller.

The junction of the bottom wall of roller storage tank and the middle retaining inner wall forms the first slot of arc angling, roller storage tank Bottom wall and the inner ring outside keep off inner wall junction formed arc angling the first slot.First slot is accommodating in processing roller Play the role of withdrawing when slot；Play the role of eliminating internal stress in heat treatment；It is played when cylindrical roller is installed convenient for holding Set the effect of cylindrical roller；When using bearing, which can also play the role of accommodating lubricating oil.

Description of the drawings

Fig. 1 is the schematic diagram of the utility model high-precision low-noise vibrating machine bearing application.

Fig. 2 is the schematic diagram of the corresponding bearing outer ring of the utility model high-precision low-noise vibrating machine bearing.

Fig. 3 is the utility model high-precision low-noise vibrating machine bearing schematic diagram.

Fig. 4 is the corresponding roller schematic diagram of the utility model high-precision low-noise vibrating machine bearing.

Reference numeral includes：

100- bearing outer rings；200- bearing inner races；It is kept off in 210- inner rings；Retaining inner wall in 211-；It is kept off outside 220- inner rings；230- Roller storage tank；240- raceways；The first slots of 250-；300- cylindrical rollers；310- annular surfaces；The end faces 320-；400- retainers.

Specific implementation mode

The utility model is described in detail below in conjunction with attached drawing.

As Figure 1-Figure 4, the present embodiment provides a kind of high-precision low-noise vibrating machine bearings, wherein bearing inner race 200, which is used for and cylindrical roller 300 is used cooperatively, and the roller end face 320 of cylindrical roller 300 is ball basal plane, Bearing inner race 200 include positioned at outer race end two inner rings outside keep off 220 and in the middle part of 200 outer shroud of bearing inner race in 210 are kept off in circle, and the roller storage tank 230 for keeping off and being formed between 220 for accommodating cylindrical roller 300 outside 210 and inner ring is kept off in inner ring, The matched middle retaining inner wall 211 in end face of gear 210 and cylindrical roller 300 is planar wall in inner ring.

Specifically, as shown in Fig. 2, the in-between columned space of bearing inner race 200 in the present embodiment is installation column The excessive angle of the mounting portion of body, bearing inner race 200 and inner ring surface is rounded corner, with convenient for assembly, in the outer shroud of bearing inner race 200 Have on face in inner ring and keep off 220 outside gear 210 and inner ring, wherein keeping off 220 outside inner ring is arranged at the end of the outer ring surface of bearing inner race 200 Portion position, the lateral surface that inner ring keeps off 220 outside is concordant with the end face of bearing inner race 200, and 220 top rounded corner and mistake are kept off outside inner ring It spends outside inner ring and keeps off 220 inner wall, the inner wall and raceway 240 that 220 are kept off outside inner ring connect.

The top surface of gear 210 is plane in inner ring, and the top surface that 210 are kept off in inner ring is horizontal plane, and the side wall that 210 are kept off in inner ring is The inside of middle retaining inner wall 211, each roller storage tank 230 corresponds to a middle retaining inner wall 211.It is interior from longitudinal sectional drawing The shape of gear 210 is inverted triangular structure in circle, and gear 210, inner ring keep off 220 and roller storage tank 230 outside in inner ring It is arranged symmetrically.

In the present embodiment, the matched middle retaining inner wall 211 in end face of gear 210 and cylindrical roller 300 is planar wall in inner ring, The end face of cylindrical roller 300 is ball basal plane, i.e., the end face of cylindrical roller 300 is arcwall face, the end face of cylindrical roller 300 and middle gear The contact of inner wall 211 is linear contact so that the contact area of the end face of cylindrical roller 300 and middle retaining inner wall 211 reduces, to The friction coefficient of Bearing inner is reduced, the noise in bearing working is reduced, it is poor to improve bearing accuracy.220 and roller are kept off outside inner ring The opposite inner wall of storage tank 230 is changed to planar wall also and has the advantages that same, repeats no more.

In some embodiments, not the case where not playing the lateral pressure that the offer of cylindrical roller 300 is provided as kept off 220 outside inner ring Under, it is planar wall that 220 inner walls opposite with roller storage tank 230 are kept off outside inner ring.Its advantage and middle retaining inner wall 211 are planar wall class Seemingly.It should be understood that the inner wall for keeping off 220 outside middle retaining inner wall 211 and inner ring is annular wall.

As shown in Fig. 2, roller storage tank 230 is inclined outwardly on the basis of the radial center plane of symmetry of bearing inner race 200.Two The groove body of a roller storage tank 230, the opening of roller storage tank 230 think outer unlimited offset setting.In this state, outside inner ring Gear 220 plays the role of the component of the offer of support cylindrical roller 300.The radial center pair of middle retaining inner wall 211 and bearing inner race 200 The angle formed between face is referred to as angle A, and angle A is more than 0 °, is less than 9 °, i.e. 0 ° of 9 ° of ＜ A ＜.The angle of angle A do not answer it is excessive, in order to avoid Make to keep off 220 component for bearing bigger outside inner ring so that keep off the 220 tired deformations of compression outside inner ring.

Preferably, the thickness for keeping off 220 roots outside inner ring is more than the thickness on top.Inner ring to keep off 220 outside to hold By the pressure of bigger.

Roller storage tank 230 is inclined outwardly on the basis of the radial center plane of symmetry of bearing inner race 200, while will be in middle gear The angle formed between wall 211 and the radial center plane of symmetry of bearing inner race 200 is idle within limits so that in middle gear When the state that wall 211 and 300 end face contact area of cylindrical roller reduce, the not support cylindrical roller 300 of middle retaining inner wall 211.

The junction of the bottom wall of roller storage tank 230 and middle retaining inner wall 211 forms the first slot 250 of arc angling；Roller The junction that 220 inner wall is kept off outside the bottom wall and inner ring of storage tank 230 forms the first slot 250 of arc angling.

The junction of the bottom wall of roller storage tank 230 and middle retaining inner wall 211 forms the first slot 250 of arc angling, roller The junction that 220 inner wall is kept off outside the bottom wall and inner ring of storage tank 230 forms the first slot 250 of arc angling.First slot 250 Play the role of withdrawing when processing roller storage tank 230；Play the role of eliminating internal stress in heat treatment；In cylindrical roller Play the role of when 300 installation convenient for accommodating cylindrical roller 300；When using bearing, which can also play receiving The effect of lubricating oil.

The roller annular surface 310 of cylindrical roller 300 and the contact rate of raceway 240 are 0.95%；The roller of cylindrical roller 300 The contact rate of end face 320 and middle retaining inner wall 211 is 0.89%.

The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality It, in specific embodiments and applications can be with many changes may be made, as long as these variations are without departing from this with novel thought The design of utility model, belongs to the scope of protection of the utility model.

Claims (7)

1. high-precision low-noise vibrating machine bearing, which includes bearing outer ring, cylinder rolling Son, retainer and bearing inner race, which is used for and cylindrical roller is used cooperatively, and the end face of the cylindrical roller is ball base Face, it is characterised in that：The bearing inner race includes being kept off outside two inner rings of outer race end and outside bearing inner race It being kept off in inner ring in the middle part of ring, gear and inner ring form the roller storage tank for accommodating cylindrical roller in the inner ring between keeping off outside, The matched middle retaining inner wall in end face of gear and cylindrical roller is planar wall in the inner ring.

2. high-precision low-noise vibrating machine bearing according to claim 1, it is characterised in that：It keeps off and rolls outside the inner ring The opposite inner wall of sub- storage tank is planar wall.

3. high-precision low-noise vibrating machine bearing according to claim 1, it is characterised in that：The roller storage tank with It is inclined outwardly on the basis of the radial center plane of symmetry of the bearing inner race.

4. high-precision low-noise vibrating machine bearing according to claim 3, it is characterised in that：The middle retaining inner wall and institute It is angle A to state the angle formed between the radial center plane of symmetry of bearing inner race, and angle A is more than 0 °, is less than 9 °.

5. high-precision low-noise vibrating machine bearing according to claim 3, it is characterised in that：Root is kept off outside the inner ring Thickness be more than top thickness.

6. high-precision low-noise vibrating machine bearing according to claim 1, it is characterised in that：The roller storage tank The junction of bottom wall and the middle retaining inner wall forms the first slot of arc angling；The bottom wall and the inner ring of the roller storage tank The junction of the inner wall of outer gear forms the first slot of arc angling.

7. high-precision low-noise vibrating machine bearing according to claim 1, it is characterised in that：The ring of the cylindrical roller The contact rate of shape face and raceway is 0.95%；The contact rate of the end face of the cylindrical roller and middle retaining inner wall is 0.89%.