CN103770005A - Novel bearing grinding wheel dresser of asymptotic convergence curve roller path - Google Patents
Novel bearing grinding wheel dresser of asymptotic convergence curve roller path Download PDFInfo
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- CN103770005A CN103770005A CN201310685674.5A CN201310685674A CN103770005A CN 103770005 A CN103770005 A CN 103770005A CN 201310685674 A CN201310685674 A CN 201310685674A CN 103770005 A CN103770005 A CN 103770005A
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- dresser
- shaft
- convergence curve
- bearing
- eccentric shaft
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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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- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a novel bearing grinding wheel dresser of an asymptotic convergence curve roller path. The novel bearing grinding wheel dresser of the asymptotic convergence curve roller path aims to ensure that dressed grinding wheels can meet the technical requirements of grinding of the bearing asymptotic convergence curve roller path, and adopts the structural mode that a dressing shaft and an eccentric shaft swing in a combined mode. A dressing shaft sleeve drives a dressing support to swing around the center of the eccentric shaft, at the same time, the eccentric shaft swings around the center of the dressing shaft at a higher speed, the swing radius of a diamond pen on the dressing support around the center of the eccentric shaft is changed to be the sum of the radius of the eccentric shaft and offset delta, and the continuous swing track is an asymptotic convergence curve. The novel bearing grinding wheel dresser of the asymptotic convergence curve roller path has the advantages that gapless rotation and sliding are achieved by assembly of adjustment components, the convergence curved surfaces of the grinding wheels can be grinded, the overall operation rigidity, stability and continuity of the grinding wheel dresser are guaranteed, the technical aim of machining of the ball bearing asymptotic convergence curve roller path is achieved, and machining operation is easy.
Description
Technical field
The present invention relates to the equipment for grinding of trimming wheel, relate in particular to a kind of novel asymptotic convergence curve race bearing dresser, is that use diamond pen is that diamond roller is by the equipment for grinding of raceway shape trimming 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, and raceway arc radius is bigger than normal.But with regard to the raceway shape of bearing self, if bearing is under non-homogeneous stressing conditions, be bearing stressed on circumference be heterogeneous, actual contact point (contact angle) the meeting deviation theory design point (contact angle) of rolling element, the bias meeting of stressed large steel ball and raceway contact point is obvious, the contact point of steel ball and raceway is non-circular in the distribution of circumference, in the situation that being subject to tilting moment, detect bearing, will find in bearing, there is axially relatively moving in various degree at circumferencial direction in outer ring, load is larger, bearing deformation is larger, Internal and external cycle relatively moves more obvious.If steel ball at stressed rear deviation theory contact point simultaneously, can make the contact angle of steel ball and raceway increase fast, reduce the deflection of bearing, the embroidery that contact point of steel ball and raceway distributes can diminish, and therefore adopts the convergence curve raceway of gradual change especially necessary.If lasso raceway adopts convergence curve raceway, the contact point of steel ball and raceway is in the time being subject to load deviation theory position, in the situation that bearing deformation is less, the contact angle of steel ball and raceway increases can be obvious, meets the requirement of bearing load, and bearing is under identical deflection condition, adopt the contact point increase of convergence curve raceway steel ball more obvious, can make the comprehensive load capacity of bearing obviously improve, anti-rollover performance obviously increases, and operation stability is better.But gradual change convergence curve raceway difficulty of processing is larger, reason mainly contains two:
1. elliptic roller track belongs to the raceway of circular curve radius gradual change, and simulation difficulty is larger, even if adopt the electric control methods such as servo-drive system, is also difficult to realize even without the whole curved surface of node trimming wheel;
2. as dresser itself, the rigidity of operation, stability are the keys that guarantees emery wheel curve form, and traditional simple and mechanical finishing action is to complete the finishing of the emery wheel curved surface of arc radius gradual change.
Therefore, design bearing processing at present still adopts fixing arc raceway, causes the running precision of bearing and product quality to be greatly affected, and especially, in the situation that load is inhomogeneous, the probability of the damage of bearing can obviously increase, and reduces service life.
Summary of the invention
The present invention discloses a kind of novel asymptotic convergence curve race bearing dresser, object is to guarantee that the emery wheel being trimmed can meet the technical requirement of bearing gradual change convergence curve ball race grinding, thereby improve running accuracy, the anti-rollover performance of bearing, extend bearing service life.For solving the gradual change convergence curve shape processing problems of raceway, first rigidity, stability and the continuity of dresser be to consider, the accuracy of the emery wheel asymptotic convergence curved surface being trimmed and the validity of grinding bearing gradual change convergence curve raceway also will be considered.
Novel gradual change convergence curve race bearing dresser mentality of designing: take the theoretical contact point of steel ball and raceway as benchmark, make the raceway arc radius of theoretical contact point both sides be slightly less than the arc radius of contact point, but be not less than the minimum parameter of raceway curve requirement, make the finishing point of trimmer diamond pen present convergent tendency gradually on two side directions of theoretical circular arc contact point, thereby form the convergence curve raceway of a gradual change.The frame mode that trimmer adopts dresser shaft and eccentric shaft combination to swing, swing in dressing process at trimmer, finishing axle sleeve (driving finishing support) is when eccentric shaft center O p swings, eccentric shaft is swinging around dresser shaft center O x, and eccentric shaft is faster around the swing speed of eccentric shaft center O p than finishing axle sleeve around dresser shaft center O x swing speed, thereby making to be fixed on diamond pen on finishing support becomes around eccentric shaft center O p pendulum radius with around the synthetic radius of dresser shaft center O x pendulum radius δ around the pendulum radius of dresser shaft center O x, form continually varying pendulum radius (continually varying track is gradual change convergence curve), realize emery wheel working curved surface is trimmed to gradual change convergence curve shape curved surface, thereby in wheel grinding raceway process, guarantee raceway to wear into gradual change convergence curve raceway.
In order to achieve the above object, the present invention takes following technical scheme: (2) the entirety of trimmer be fixed on grinding machine body correct position (1) by principal saddle, and (20) (3) trimmer agent structure constituted with the eccentric shaft of the dresser shaft (21) swinging and swing by the bolster main shaft swinging.
(3) principal saddle (2) middle part is fixedly connected with main shaft, limit portion assemble can drive oil cylinder I that (7) tooth bar I move up and down (6) with guide rail I (5).
(4) (3) main shaft relatively rotate connection by bearing with outside collar bush; Collar bush be (4) equipped with gear I (8) with joint cover (9), gear I (8) with; (7) tooth bar I engages; (10) collar bush (4) end is equipped with eccentric adjustment pressing plate, adjusts pressing plate and (10) fixes dresser shaft (21), adjusts pressing plate and is (10) connected by chute guide frame with dresser shaft (21); There is an offset A in dresser shaft center O x and alignment of shafts Ow.
(11) (9) joint cover be fixedly connected with finishing seat board, finishing seat board (11) assemble oil cylinder II (14) with guide rail II (17), tooth bar II (12) with tooth bar III (15), side channel is in-built after (15) has spring mechanism (18) for tooth bar III; (20) eccentric shaft is the inhomogeneous hollow cavity of wall thickness, utilizes bearing assemble with the dresser shaft (21) being loaded in chamber, and eccentric shaft center O p and dresser shaft center O x exist offset δ; (12) (13) the eccentric shaft (20) gear II of one end assembling engage with tooth bar II; Eccentric shaft (20) the other end and middle part utilize bearing assemble finishing axle sleeve (19) in; (15) (16) finishing axle sleeve (19) outer gear III of installing engage with tooth bar III; Finishing axle sleeve (19) end is provided with curvature adjustment pressing plate (22); Curvature is adjusted the fixing maintaining support (24) of pressing plate (22), and fixing maintaining support (24) is equipped with diamond pen (25).
The invention has the beneficial effects as follows: dresser is realized gapless by the assembling of adjustment component and rotated and slide, guarantee rigidity, stability and the continuity of dresser overall work, dresser has been realized the grinding to emery wheel convergence curved surface, solve the technical barrier to the processing of ball bearing gradual change convergence curve raceway, and processing easy operating; Increase substantially combination property and the service life of rolling bearing.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is trimmer overall structure schematic diagram;
Fig. 2 is dresser shaft and spindle eccentricity stationary water mean place schematic diagram;
Fig. 3 is that dresser shaft is rocked to positive and negative 45 ° of position views;
Fig. 4 is dresser shaft center, eccentric shaft center and alignment of shafts position conllinear schematic diagram;
Fig. 5 is not conllinear schematic diagram of dresser shaft center, eccentric shaft 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.
Illustration: grinding machine body 1, principal saddle 2, main shaft 3, collar bush 4, guide rail I 5, oil cylinder I 6, tooth bar I 7, gear I 8, connecting plate 9, eccentric pressing plate 10, finishing seat board 11, tooth bar II 12, gear II 13, oil cylinder II 14, tooth bar III 15, gear III 16, guide rail II 17, spring mechanism 18, finishing axle sleeve 19, eccentric shaft 20, dresser shaft 21, curvature adjustment pressing plate 22, emery wheel 23, finishing support 24, the diamond pen 25 adjusted.
In figure:
Zw-main spindle's
Zo, Z
1, Z
2-dresser shaft position
Ow-alignment of shafts
Ox, O
1, O
2, O
3, Oa, Ob, Oc, Od-dresser shaft center
A-dresser shaft and spindle eccentricity amount
Op, Op
1, Op
2, Op
3, Op
4-eccentric shaft external diameter center
α-position offset
L
1, L
2-circular curve
R
1, R
2-with O
1, O
2centered by radius
ROp-eccentric shaft external diameter
Rs, Rs
1-always repair radius R s
Po
2, Po
3-finishing support is in orientation
P
0, P
1, P
2, P
3, P
4-diamond pen position
Dw-steel ball.
The specific embodiment
As shown in Figure 1,
The entirety of trimmer is fixed on the correct position of grinding machine body 1 by principal saddle 2, trimmer agent structure constitutes by main shaft 3 and with the dresser shaft 21 swinging, the eccentric shaft 20 swinging and finishing support 24.
As shown in Figure 2, the realization of dresser shaft center O x and alignment of shafts Ow eccentric action, is swung and is realized by oil cylinder I 6; 6 actions of oil cylinder I start to make alignment of shafts Ow and dresser shaft center O x to be horizontal, and offset A is maximum, and dresser shaft 21 is in Z
0position.When oil cylinder I 6 is with in carry-over bar I 7 or when lower action, driven wheel I 8 is around Ow clockwise or counter-clockwise swing.
As shown in Figure 3, can rest on according to the requirement of raceway the position (for example 45 ° of negative or positives) of proper angle, dresser shaft 21 is rocked to Z
1or Z
2, corresponding dresser shaft center O x rotates to O when the position
1, O
2position, trimmer is respectively with O
1, O
2centered by, with R
1, R
2(R
1=R
2) radius swings and draw circular curve L
1and L
2and position offset α, conform to the status requirement of bearing standard arc raceway; Now dresser shaft center O x rotates to O
1, O
2position is just keeping (or negative) 45 ° of invariant positions, the main eccentric position of rigid bearing raceway, and the main eccentric parameter of raceway can be determined by the offset A that adjusts dresser shaft 21.
As shown in Figure 4, when finishing seat board 11 and the parts that are connected and repair support 24 main bodys with the position that is fixed on joint cover 9 on collar bush 4 and swings to 45 ° of lines, dresser shaft center O x rotates to O
2position, dresser shaft 21 positions by Zo to Z
2, the offset of the external diameter center O p(of the lucky eccentric shaft 20 in this position and dresser shaft center O x is δ) and be positioned at O
2on 45 ° of lines that are connected with Ow, i.e. O
2, Op and Ow position conllinear, finishing support 23 is in Po
2(45 °) position; Total finishing radius R s=δ+ROp.
As shown in Figure 5, when finishing seat board 11 returns to swing with the joint cover 9 being fixed on collar bush 4 since the position of 45 ° of lines with the parts that are connected and finishing support 24 main bodys, dresser shaft center O x is by O
2when position turns to convolution, oil cylinder II 14 is with carry-over bar II 12 and tooth bar III 15 to move, and driven wheel II 13 and gear III 16 clockwise rotate simultaneously, and gear II 13 is rotated around Ox, and gear III 16 is rotated around Op.Repair requirement according to emery wheel 23, the diameter of design gear II 13 is less than the diameter of gear III 16, that is to say, gear II 13 rotating speeds are faster than gear III 16 rotating speeds, and eccentric shaft 20 for example, with speed (2 times) rotation higher than finishing axle sleeve 19, O
3, Op
3, OwSan Ge center forwards non-colinear position to, finishing support 24 is by Po
2forward Po to
3position, always repairs radius R s and becomes Rs
1, Rs
1offset δ, eccentric shaft 20 radius R Op and Rs
1composition (with O
3, Op, Po
2for summit) a leg-of-mutton limit, Rs
1be less than Rs.Thus, along with the combination of dresser shaft 21 and eccentric shaft 20 swings, the arc radius that dresser is repaired out emery wheel 23 diminishes the increase along with eccentric shaft 20 pendulum angles, thereby, the circular curve of the emery wheel 23 forming below 45 ° of lines is restrained gradually, the correction of emery wheel 23 circular curves is determined by the offset δ that adjusts eccentric shaft 20, thereby has been guaranteed that circular curve shape guarantees that raceway shape meets the load parameter requirement of bearing.
In like manner, dresser shaft center O x is adjusted to O
1, fix when the position, by the action of oil cylinder II 14, can repair out the circular curve of the lower part gradual change of 0 °～-45 ° of emery wheels 23.
As shown in Figure 6, according to the course of action of Fig. 2～Fig. 5, to steel ball Dw raceway, simulation is got a little, and dresser shaft center is placed in to O
2position, the pendulum angle of getting respectively finishing support 24 is 10 ° of (P
1), 20 ° of (P
2), 30 ° of (P
3), 40 ° of (P
4), dresser shaft center swings to Oa, Ob, Oc, Od position by O2 correspondence, and eccentric shaft center pendulum angle corresponds to 20 ° of (Op
1), 40 ° of (Op
2), 60 ° of (Op
3), 80 ° of (Op
4), connection finishing support 24 swings the point of each circular curve of above-mentioned each angle, starts to dwindle into gradually gradual change convergence curve to P4 point curve radius (amplifying as Fig. 7) from P0 point.This gradual change convergence curve shape is just consistent with the requirement of ball-bearing groove under non-uniform load condition.
4 angular contact bearing raceways that steel ball (Dw) diameter is 45mm, while swing with 5 ° of pendulum angles, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 ° respectively by 45 ° of contact angles, each point line is made circular arc, get from top to bottom 5 points (0 ° of point, 10 ° of points, 20 ° of points, 30 ° of points, 40 ° of points), radius is respectively R23.625mm(ideal position P
0), R23.625mm(P
1position), R23.2195mm (P
2position), R23.1973mm (P
3position), R22.9842mm (P
4position), approaching P
0, camber line convergence is not obvious when the position, and pendulum angle is larger, and camber line is restrained more obviously gradually, is formed as gradual change convergence curve raceway.
Claims (6)
1. a novel asymptotic convergence curve race bearing dresser, it is characterized in that: (2) the entirety of described trimmer be fixed on grinding machine body correct position (1) by principal saddle, (20) (3) trimmer agent structure constituted with the eccentric shaft of the dresser shaft (21) swinging and swing by the bolster main shaft swinging.
2. novel asymptotic convergence curve race bearing dresser according to claim 1, is characterized in that: (3) described principal saddle (2) middle part is fixedly connected with main shaft, limit portion assemble can drive oil cylinder I that (7) tooth bar I move up and down (6) with guide rail I (5).
3. according to novel asymptotic convergence curve race bearing dresser described in claim 1 or 2, it is characterized in that: (4) (3) described main shaft relatively rotate connection by bearing with outside collar bush; Collar bush be (4) equipped with gear I (8) with joint cover (9), gear I (8) with; (7) tooth bar I engages; (10) collar bush (4) end is equipped with eccentric adjustment pressing plate, adjusts pressing plate and (10) fixes dresser shaft (21), adjusts pressing plate and is (10) connected by chute guide frame with dresser shaft (21); There is an offset A in dresser shaft center O x and alignment of shafts Ow.
4. novel asymptotic convergence curve race bearing dresser according to claim 3, it is characterized in that: (11) (9) described joint cover be fixedly connected with finishing seat board, finishing seat board (11) assemble oil cylinder II (14) with guide rail II (17), tooth bar II (12) with tooth bar III (15), side channel is in-built after (15) has spring mechanism (18) for tooth bar III.
5. novel asymptotic convergence curve race bearing dresser according to claim 1, it is characterized in that: (20) described eccentric shaft is the inhomogeneous hollow cavity of wall thickness, utilizing bearing assemble with the dresser shaft (21) being loaded in chamber, there is offset δ in eccentric shaft center O p and dresser shaft center O x; (12) (13) the eccentric shaft (20) gear II of one end assembling engage with tooth bar II; Eccentric shaft (20) the other end and middle part utilize bearing assemble finishing axle sleeve (19) in.
6. novel asymptotic convergence curve race bearing dresser according to claim 5, is characterized in that: (15) (16) described finishing axle sleeve (19) outer gear III of installing engage with tooth bar III; Finishing axle sleeve (19) end is provided with curvature adjustment pressing plate (22); Curvature is adjusted pressing plate (22) maintaining support (24) of diamond pen (25) is fixedly housed.
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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685674.5A CN103770005B (en) | 2013-12-16 | 2013-12-16 | New asymptotic convergence curve race bearing dresser |
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| Publication Number | Publication Date |
|---|---|
| CN103770005A true CN103770005A (en) | 2014-05-07 |
| CN103770005B CN103770005B (en) | 2018-02-27 |
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| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN115194653A (en) * | 2022-05-30 | 2022-10-18 | 首钢京唐钢铁联合有限责任公司 | Simulator and simulation method |
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|---|---|---|---|---|
| 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 |
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Cited By (4)
| 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 |
| CN115194653A (en) * | 2022-05-30 | 2022-10-18 | 首钢京唐钢铁联合有限责任公司 | Simulator and simulation method |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103770005B (en) | 2018-02-27 |
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