CN103770005B - New asymptotic convergence curve race bearing dresser - Google Patents
New asymptotic convergence curve race bearing dresser Download PDFInfo
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- CN103770005B CN103770005B CN201310685674.5A CN201310685674A CN103770005B CN 103770005 B CN103770005 B CN 103770005B CN 201310685674 A CN201310685674 A CN 201310685674A CN 103770005 B CN103770005 B CN 103770005B
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- dresser
- finishing
- shaft
- bearing
- eccentric shaft
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The present invention discloses a kind of new asymptotic convergence curve race bearing dresser, it is therefore an objective to which the emery wheel for ensureing to be trimmed disclosure satisfy that the technical requirements of bearing gradual change convergence curve ball race grinding.The frame mode that trimmer is swung using dresser shaft and eccentric shaft combination, dresser shaft set drives finishing support while around eccentric shaft pivot, eccentric shaft is with faster speed around dresser shaft pivot, and the diamond pen on finishing support is become eccentric shaft radius and offset δ synthesis radiuses around the pendulum radius of finishing axis center, the track continuously swung is gradual change convergence curve.The beneficial effects of the invention are as follows：Assembling by adjusting part realizes that gapless is rotated and slided, realize the grinding to emery wheel convergence curved surface, ensure rigidity, stability and the continuity of dresser overall work, solve the technical barrier to the processing of ball bearing gradual change convergence curve raceway, and process easily operated.
Description
Technical field
The present invention relates to the equipment for grinding of finishing emery wheel, more particularly to a kind of new asymptotic convergence curve race bearing emery wheel
Trimmer, it is the equipment for grinding using diamond pen i.e. diamond roller by raceway shape emery wheel.
Background technology
Existing ball-bearing groove cross sectional shape is circular arc type, and the arc radius of raceway arc radius and steel ball exists certain
Proportionate relationship, raceway arc radius are bigger than normal.But for the raceway shape of bearing itself, if bearing is in non-homogeneous stressing conditions
Under, i.e., circumferentially stress is heterogeneous, the actual contact point of rolling element to bearing（Contact angle）Can deviation theory design point（Connect
Feeler）, the bias of the big steel ball of stress and raceway contact point can be obvious, then the contact point of steel ball and raceway is in circumference
Distribution is in non-circular, and bearing is detected in the case of by tilting moment, it finds that the inside and outside circle of bearing occurs in circumferencial direction
Different degrees of axially opposing movement, load is bigger, and bearing deformation is bigger, and Internal and external cycle relative movement is more obvious.If steel ball exists
Stress is retrodeviated from theoretical contact point meanwhile, it is capable to make the contact angle of steel ball and raceway quickly increase, and reduces the deflection of bearing, then
The embroidery of the contact point of steel ball and raceway distribution can diminish, therefore especially necessary using the convergence curve raceway of gradual change.
If lasso raceway uses convergence curve raceway, the contact point of steel ball and raceway is when by load deviation theory position, in axle
Hold deformation it is less in the case of, the increase of the contact angle of steel ball and raceway can be obvious, meets the requirement of bearing load, bearing exists
Under the conditions of identical deflection, become apparent from using the contact point increase of convergence curve raceway steel ball, the comprehensive carrying energy of bearing can be made
Power significantly improves, and resistant to tipping performance substantially increases, and operation stability is more preferable.But gradual change convergence curve raceway difficulty of processing compared with
Greatly, reason mainly has two：
1. elliptic roller track belongs to the raceway of circular curve radius gradual change, simulation difficulty is larger, even if using servo-drive system etc.
Electric control method, it is also difficult to realize and uniformly repair the whole curved surface of emery wheel without node；
2. as dresser itself, the rigidity of operation, stability are to ensure emery wheel curve form
Key, traditional simple and mechanical finishing action is the emery wheel camber correction that can not complete arc radius gradual change.
Therefore, design bearing processing at present still uses fixed arc raceway, causes the running precision and product of bearing
Quality is greatly affected, and especially in the case where load is uneven, the probability of the damage of bearing can substantially increase, and reduction makes
Use the life-span.
The content of the invention
The present invention discloses a kind of new asymptotic convergence curve race bearing dresser, it is therefore an objective to ensures the sand being trimmed
Wheel disclosure satisfy that the technical requirements of bearing gradual change convergence curve ball race grinding, so as to improve the running accuracy of bearing, resistant to tipping
Can, extend bearing service life.To solve the gradual change convergence curve shape processing problems of raceway, first have to consider that emery wheel is repaiied
Rigidity, stability and the continuity of whole device, it is also contemplated that the accuracy for the emery wheel asymptotic convergence curved surface being trimmed and grinding axle
Hold the validity of gradual change convergence curve raceway.
New gradual change convergence curve race bearing dresser mentality of designing：Using the theoretical contact of steel ball and raceway point as
Benchmark, the raceway arc radius of theoretical contact point both sides is set to be slightly less than the arc radius of contact point, but it is bent not less than raceway
The minimum parameter of line requirement, the finishing point of trimmer diamond pen is presented in two side directions of theoretical arc contact point and gradually receive
Trend is held back, so as to form the convergence curve raceway of a gradual change.The structure that trimmer is swung using dresser shaft and eccentric shaft combination
Mode, in trimmer swings dressing process, repair axle sleeve（Drive finishing support）While being swung around eccentric axis center Op,
Eccentric shaft is swung around finishing axis center Ox, and eccentric shaft repairs axle sleeve in eccentric shaft around finishing axis center Ox swing speed ratio
Heart Op swing speed is fast, becomes so that being fixed on diamond pen on finishing support around finishing axis center Ox pendulum radius around inclined
Spindle center Op pendulum radiuses and the synthesis radius around finishing axis center Ox pendulum radiuses δ, form the pendulum radius of consecutive variations
（The track of consecutive variations is gradual change convergence curve）, realize to stone camber correction to be gradual change convergence curve shape curved surface, from
And ensure raceway wearing into gradual change convergence curve raceway during wheel grinding raceway.
In order to achieve the above object, the present invention takes following technical scheme：(2) trimmer is fixed entirely through principal saddle
In the correct position of grinding machine body (1), trimmer agent structure is by the support shaft main shaft that the swings (3) dresser shaft with swing（21）With
(20) the eccentric shaft of swing combines composition.
(2) (3) middle part is fixedly connected principal saddle with main shaft, (6) edge assembles the oil cylinder I that rack I can be driven (7) to move up and down
With guide rail I (5).
(3) (4) main shaft is relatively rotated with the collar bush of outside by bearing is coupled；(4) (8) collar bush is equipped with gear I and is coupled
Plate (9), gear I (8) with；(7) rack I engages；(4) (10) end adjusts pressing plate to collar bush equipped with eccentric, the (10) fixed finishing of adjustment pressing plate
Axle（21）, adjustment pressing plate (10) with dresser shaft（21）Connected by chute guide frame；Finishing axis center Ox and alignment of shafts Ow is deposited
In an offset A.
Joint cover (9) with finishing seat board be (11) fixedly connected, finishing seat board (11) assemble oil cylinder II (14) with guide rail II (17), rack II
(12) with rack III (15), rack III (15) rear side groove built with spring mechanism (18)；
(20) eccentric shaft is the uneven hollow cavity of wall thickness, and loaded on the dresser shaft in chamber（21）Assembled using bearing,
Offset δ be present with finishing axis center Ox in eccentric axis center Op；(13) (12) the eccentric shaft gear II that (20) one end is assembled is nibbled with rack II
Close；(20) using bearing to be assemblied in finishing axle sleeve (19) interior for the other end and middle part for eccentric shaft；(19) gear III that finishing axle sleeve is installed outside is (16)
(15) engaged with rack III；(19) end is provided with curvature adjustment pressing plate to finishing axle sleeve（22）；Curvature adjusts pressing plate（22）Fixed maintenance
Support（24）, fixed maintaining support（24）Equipped with diamond pen（25）.
The beneficial effects of the invention are as follows：Assembling of the dresser by adjusting part realizes that gapless is rotated and slided,
Ensure rigidity, stability and the continuity of dresser overall work, dresser is realized to emery wheel convergence curved surface
Grinding, solve the technical barrier to the processing of ball bearing gradual change convergence curve raceway, and process easily operated；Increase substantially
The combination property and service life of rolling bearing.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description.
Fig. 1 is trimmer overall structure diagram；
Fig. 2 is dresser shaft and spindle eccentricity stationary horizontal position schematic diagram；
Fig. 3 is that dresser shaft is rocked to positive and negative 45 ° of position views；
Fig. 4 is finishing axis center, the conllinear schematic diagram of eccentric axis center and alignment of shafts position；
Fig. 5 is finishing axis center, the not conllinear schematic diagram of eccentric axis center and alignment of shafts position；
Fig. 6 is the actual crushing asymptotic convergence curve raceway schematic diagram of simulation；
Fig. 7 is the actual crushing gradual change convergence curve enlarged drawing of simulation.
Icon explanation：Grinding machine body 1, principal saddle 2, main shaft 3, collar bush 4, guide rail I 5, oil cylinder I 6, rack I 7, gear I 8,
Connecting plate 9, eccentric adjustment pressing plate 10, finishing seat board 11, rack II 12, gear II 13, oil cylinder II 14, rack III 15, gear III
16th, guide rail II 17, spring mechanism 18, finishing axle sleeve 19, eccentric shaft 20, dresser shaft 21, curvature adjust pressing plate 22, emery wheel 23, repaiied
Whole support 24, diamond pen 25.
In figure：
Zw-main spindle's
Zo、Z1、Z2- finishing shaft position
Ow-the alignment of shafts
Ox、O1、O2、O3, Oa, Ob, Oc, Od-finishing axis center
A-dresser shaft and spindle eccentricity amount
Op、Op1、Op2、Op3、Op4- eccentric shaft external diameter center
α-position offset
L1、L2- circular curve
R1、R2- with O1、O2Centered on radius
ROp-eccentric shaft external diameter
Rs、 Rs1- always repair radius Rs
Po2、Po3- finishing support is in orientation
P0、P1、P2、P3、P4- diamond pen position
Dw-steel ball
Embodiment
As shown in figure 1,
The correct position that grinding machine body 1 is fixed on entirely through principal saddle 2 of trimmer, trimmer agent structure is by main shaft
3 with and swing dresser shaft 21, swing eccentric shaft 20 and finishing support 24 combine composition.
Principal saddle 2 assembles oil cylinder I 6, guide rail I 5；Oil cylinder I 6 drive rack I 7 move up and down, the drive shaft of rack I 7 set 4 around
Alignment of shafts Ow is rotated, and I 5 pairs of racks I 7 of guide rail play the guiding role.
Main shaft 3 is fixedly connected with principal saddle 2, and main shaft 3 plays main supporting role；Main shaft 3 passes through axle with outside collar bush 4
Hold cooperation；Collar bush 4 is equipped with gear I 8 and joint cover 9, and gear I 8 engages with rack I 7；The end of collar bush 4 adjusts equipped with eccentric
Pressing plate 10；Because angular contact ball bearing raceway feature is peach-shaped raceway, it is therefore necessary to adjustment finishing axis center Ox and the alignment of shafts
Ow forms an offset A（See Fig. 2）, the size of A values is determined according to the size of steel ball size, then (10) pressing plate is adjusted by bias
With dresser shaft（21）It is fixedly connected by chute guide frame；Dresser shaft 21 i.e. with the synchronous axial system of collar bush 4, and along chute from
Turn.
Joint cover 9 is fixedly connected with finishing seat board 11, and finishing seat board 11 assembles oil cylinder II 14 and guide rail II 17, rack II 12
With rack III 15；The rear side groove of rack III 15 is hinged one end spring pre-tightening built with spring mechanism 18, spring mechanism 18 by one end
Mode eliminate because gear drive in bias caused by gap.Eccentric shaft 20 is the uneven hollow cavity of wall thickness, with
Assembled loaded on the dresser shaft 21 in chamber by bearing, eccentric axis center Op has offset δ with finishing axis center Ox；Eccentric shaft 20
The gear II 13 of one end assembling engages with rack II 12；The middle part of eccentric shaft 20 and the other end are assemblied in finishing axle sleeve 19 by bearing
It is interior；The gear III 16 installed outside finishing axle sleeve 19 engages with rack III 15；Finishing axle sleeve 19 end is provided with curvature adjustment pressing plate
22；Curvature adjustment pressing plate 22 fixes the maintaining support 24 equipped with diamond pen 25.
As shown in Fig. 2 finishing axis center Ox and the alignment of shafts Ow eccentric actions realization, are to swing to realize by oil cylinder I 6
's；The action of oil cylinder I 6 starts to be horizontal alignment of shafts Ow and finishing axis center Ox, and offset A is maximum, finishing
Axle 21 is in Z0Position.When the band carry-over bar I 7 up or down action of oil cylinder I 6, drive gear I 8 is put clockwise or counterclockwise around Ow
It is dynamic.
As shown in figure 3, the position of proper angle can be rested on according to the requirement of raceway（Such as 45 ° of negative or positive）, then
Dresser shaft 21 is rocked to Z1Or Z2During position, the corresponding axis center Ox that repairs rotates to O1、O2Position, then trimmer is respectively with O1、
O2Centered on, with R1、R2（R1=R2）Radius swings and draws circular curve L1And L2And position offset α, rolled with bearing standard circular arc
The status requirement in road is consistent；Now finishing axis center Ox rotates to O1、O2Position is kept just（It is or negative）45 ° of positions are constant, fixing axle
The main eccentric position of raceway is held, the main obliquely intersected of raceway can determine by adjusting the offset A of dresser shaft 21.
As shown in figure 4, when finishing seat board 11 and the part that is connected and the main body of support 24 is repaired with being fixed on collar bush 4
Joint cover 9 swing to the positions of 45 ° of lines, that is, repair axis center Ox and rotate to O2Position, the position of dresser shaft 21 are by Zo to Z2, this
The external diameter center Op of the lucky eccentric shaft 20 in position（Offset with repairing axis center Ox is δ）Positioned at O245 ° of lines being connected with Ow
On, i.e. O2, Op and Ow positions it is conllinear, finishing support 23 be in Po2（45°）Position；Total finishing radius Rs=δ+ROp.
As shown in figure 5, when finishing seat board 11 and the part that is connected and the main body of support 24 is repaired with being fixed on collar bush 4
Joint cover 9 swing is returned since the position of 45 ° of lines, that is, repair axis center Ox by O2When position is rotated back, oil cylinder II 14
Band carry-over bar II 12 and rack III 15 act, while drive gear II 13 and gear III 16 rotate clockwise, and gear II 13 is around Ox
Rotate, gear III 16 rotates around Op.Repaired and required according to emery wheel 23, the diameter of design gear II 13 is less than the straight of gear III 16
Footpath, i other words, the rotating speed of gear II 13 is faster than the rotating speed of gear III 16, then eccentric shaft 20 is with the speed higher than finishing axle sleeve 19（Such as 2
Times）Rotate, O3、Op3, tri- centers of Ow go to non-colinear position, finishing support 24 is by Po2Go to Po3Position, always repair radius
Rs is changed into Rs1, Rs1It is offset δ, eccentric shaft 20 radius ROp and Rs1Composition (with O3、Op、Po2For summit) triangle one
Individual side, Rs1Less than Rs.Thus, swung with the combination of dresser shaft 21 and eccentric shaft 20, dresser repairs out emery wheel 23
Arc radius will diminish with the increase of the swing angle of eccentric shaft 20, so as in the emery wheel 23 formed below of 45 ° of lines
Circular curve is gradually convergent, and the correction of the circular curve of emery wheel 23 is determined by adjusting the offset δ of eccentric shaft 20, is ensured
Circular curve shape is so as to ensureing that raceway shape meets the load parameter requirement of bearing.
Similarly, finishing axis center Ox is adjusted to O1Fixed during position, by the action of oil cylinder II 14,0 ° can be repaired out
The circular curve of the lower part gradual change of~-45 ° of emery wheels 23.
As shown in fig. 6, according to Fig. 2~Fig. 5 action process, the simulation of steel ball Dw raceways is taken a little, finishing axis center is put
In O2Position, the swing angle for taking finishing support 24 respectively are 10 °（P1）、20°（P2）、30°（P3）、40°（P4）, i.e., in dresser shaft
Heart position is correspondingly swung to Oa, Ob, Oc, Od position by O2, and eccentric shaft pivot angle corresponds to 20 °（Op1）、40°（Op2）、
60°（Op3）、80°（Op4）, connection finishing support 24 swings the point of each circular curve of above-mentioned each angle, to P4 since P0 points
Gradual change convergence curve is gradually reduced into point curve radius,（Amplification such as Fig. 7,）.The gradual change convergence curve shape just with ball bearing
Requirement of the raceway under the conditions of non-uniform load is consistent.
Steel ball (Dw) a diameter of 45mm 4 angular contact bearing raceways, by 45 ° of contact angle respectively with 5 ° of swing angle,
10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 ° swing when, each point line makees circular arc, then takes from top to bottom at 5 points（0 ° of point, 10 ° of points,
20 ° of points, 30 ° of points, 40 ° of points）, radius is respectively R23.625mm（Ideal position P0）、R23.625mm（P1Position）、
R23.2195mm (P2Position), R23.1973mm (P3Position), R22.9842mm (P4Position), close to P0During position, arc
Line restrains unobvious, and swing angle is bigger, and camber line is gradually restrained more obvious, is formed as gradual change convergence curve raceway.
Claims (2)
- A kind of 1. new asymptotic convergence curve race bearing dresser, it is characterised in that:The trimmer entirely through Principal saddle (2) is fixed on the correct position of grinding machine body (1), and trimmer agent structure is by the support shaft main shaft (3) and pendulum that swing Dynamic dresser shaft (21) and the eccentric shaft (20) swung combine；The main shaft (3) is relatively rotated with the collar bush (4) of outside by bearing to be coupled；Collar bush (4) equipped with gear I (8) and Joint cover (9)；Gear I (8) engages with rack I (7)；Joint cover (9) is fixedly connected with finishing seat board (11), finishing seat board (11) Oil cylinder II (14) and guide rail II (17), rack II (12) and rack III (15) are assembled, groove is built with spring on rear side of rack III (15) Mechanism (18)；Collar bush (4) end is equipped with eccentric adjustment pressing plate (10)；The dresser shaft (21) is connected with adjustment pressing plate (10) by chute guide frame；Repair axis center Ox and alignment of shafts Ow In the presence of a deviator A；The eccentric shaft (20) is the uneven hollow cavity of wall thickness, with being filled loaded on the dresser shaft (21) in chamber using bearing Match somebody with somebody, eccentric axis center Op has offset δ with finishing axis center Ox；The gear II (13) and rack of eccentric shaft (20) one end assembling Engage II (12)；Eccentric shaft (20) other end and middle part are assemblied in finishing axle sleeve (19) using bearing.
- 2. new asymptotic convergence curve race bearing dresser according to claim 1, it is characterised in that:The finishing The gear III (16) that axle sleeve (19) is installed outside engages with rack III (15)；Finishing axle sleeve (19) end is provided with curvature adjustment pressing plate (22)；The fixed maintaining support (24) equipped with diamond pen (25) of curvature adjustment pressing plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685674.5A CN103770005B (en) | 2013-12-16 | 2013-12-16 | New asymptotic convergence curve race bearing dresser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685674.5A CN103770005B (en) | 2013-12-16 | 2013-12-16 | New asymptotic convergence curve race bearing dresser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103770005A CN103770005A (en) | 2014-05-07 |
| CN103770005B true CN103770005B (en) | 2018-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685674.5A Active CN103770005B (en) | 2013-12-16 | 2013-12-16 | New asymptotic convergence curve race bearing dresser |
Country Status (1)
| Country | Link |
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| CN (1) | CN103770005B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296866A (en) * | 2019-08-02 | 2021-02-02 | 青岛泰德汽车轴承股份有限公司 | Main shaft channel grinding device in shaft-connected bearing |
| CN111941153A (en) * | 2020-07-17 | 2020-11-17 | 杭州人本轴承有限公司 | Grinding and finishing method for four-point angular contact bearing |
| CN115194653B (en) * | 2022-05-30 | 2023-12-22 | 首钢京唐钢铁联合有限责任公司 | Simulator and simulation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827420A (en) * | 1972-02-28 | 1974-08-06 | Hoglund Eng And Mfg Co Inc | Grinding wheel dressing apparatus |
| EP0177131A2 (en) * | 1984-08-29 | 1986-04-09 | Ex-Cell-O Corporation | Orthogonal dressing of grinding wheels |
| CN2566983Y (en) * | 2002-09-10 | 2003-08-20 | 无锡机床股份有限公司 | Automatic high-speed dressing mechanism for grinding machine of processing bearing inner surface groove |
| CN201175858Y (en) * | 2008-01-02 | 2009-01-07 | 文宇 | Oversize ball bearing double-groove high precision diamond grinding wheel dressing device |
| CN102554786A (en) * | 2012-02-09 | 2012-07-11 | 江苏迪邦三星轴承有限公司 | Arc dresser for dressing grinding wheels of groove grinders for deep-groove balls |
| CN202846364U (en) * | 2012-09-11 | 2013-04-03 | 宁波欧易液压有限公司 | Convex spherical surface grinding wheel dresser device |
| CN203765467U (en) * | 2013-12-16 | 2014-08-13 | 大连联合风电轴承有限公司 | Novel dresser for grinding wheel for bearing for asymptotic convergence curve raceway |
-
2013
- 2013-12-16 CN CN201310685674.5A patent/CN103770005B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827420A (en) * | 1972-02-28 | 1974-08-06 | Hoglund Eng And Mfg Co Inc | Grinding wheel dressing apparatus |
| EP0177131A2 (en) * | 1984-08-29 | 1986-04-09 | Ex-Cell-O Corporation | Orthogonal dressing of grinding wheels |
| CN2566983Y (en) * | 2002-09-10 | 2003-08-20 | 无锡机床股份有限公司 | Automatic high-speed dressing mechanism for grinding machine of processing bearing inner surface groove |
| CN201175858Y (en) * | 2008-01-02 | 2009-01-07 | 文宇 | Oversize ball bearing double-groove high precision diamond grinding wheel dressing device |
| CN102554786A (en) * | 2012-02-09 | 2012-07-11 | 江苏迪邦三星轴承有限公司 | Arc dresser for dressing grinding wheels of groove grinders for deep-groove balls |
| CN202846364U (en) * | 2012-09-11 | 2013-04-03 | 宁波欧易液压有限公司 | Convex spherical surface grinding wheel dresser device |
| CN203765467U (en) * | 2013-12-16 | 2014-08-13 | 大连联合风电轴承有限公司 | Novel dresser for grinding wheel for bearing for asymptotic convergence curve raceway |
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| Publication number | Publication date |
|---|---|
| CN103770005A (en) | 2014-05-07 |
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