CN1579707A - Method for grinding logarithmiccurve convexity of bearing ball track and its special apparatus - Google Patents
Method for grinding logarithmiccurve convexity of bearing ball track and its special apparatus Download PDFInfo
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- CN1579707A CN1579707A CN 200410018486 CN200410018486A CN1579707A CN 1579707 A CN1579707 A CN 1579707A CN 200410018486 CN200410018486 CN 200410018486 CN 200410018486 A CN200410018486 A CN 200410018486A CN 1579707 A CN1579707 A CN 1579707A
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- convexity
- logarithmic curve
- servo
- trimmer
- grinding
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Abstract
The invention discloses a method and a special device in which the convexity of logarithmic curve of bearing rollaway nest can be grinded. It adopts a suit of autonomous system, which sets the parameters of logarithmic curve by man-machine conversational touched-screen so as to control the trimmer of serving the convexity, and gain abrasive wheel with logarithmic curve concavity, then the convexity of bearing rollaway nest will be grinded by this abrasive wheel. The special device includes setting the data and parameters of touched-screen, the PLC engineering numerical control system, the servo-system for moving abrasive wheel carriage, the controller for dressing the convexity and the job of three systems. The controller for dressing the convexity includes the trimmer carriage, the trimmer staff, the trimmer pen, the servo-actuator, the jaw with linear convexity and abrasive wheel. The invention applies to the bearing productions which have cone or column rollaway nests with logarithmic curve convexity in the grinding technic. The invention has some virtues as follows: resolving the rotational resistance of the cone or column bearings, obviously improving the life and precision, changing our country history that we couldn't process the grinding logarithmic curve of the cone or column rollaway nest in the past, resolving technical difficulties for the export and the domestic large clients, so that our cone bearings and column bearings have reached the international advanced level.
Description
One, technical field:
The present invention relates to the control technology of grinding machine trace convexity product, particularly disclose a kind of method and isolated plant thereof of grinding bearing raceway logarithmic curve convexity, be applied to the grinding of the logarithmic curve convexity product processing technique of bearing circular cone, cylindrical raceway.
Two, background technology:
At present, the domestic bearing grinding of China, the grinding on the tapered cylindrical raceway owing to do not have good equipment and a manufacturing process, can only grinding goes out the raceway of straight line raceway and hyperbola convexity face.Along with the adding of China WTO, outlet and domestic joint, Sole Proprietorship's requirement of client to circular cone, cylindrical bearing must have the logarithmic curve raceway.In this case, bearing industry adopts the technology that a finishing planker is moved diagonally before, can only repair and be with hyp concavity emery wheel, the bearing products that processes is the hyperbola crowned raceway, and so the technology that falls behind can not satisfy the requirement of circular cone, cylindrical bearing raceway quality
China adopts two kinds of old-fashioned technologies at present in the bearing industry, a kind ofly dial an angular movement for the relative grinding wheel spindle of dresser shaft moving carriage, because of the finishing planker still is a rectilinear motion, then repairing out and repairing emery wheel is the hyperbola face, another kind method, the grinding wheel spindle planker is dialled an angle with respect to workpiece spindle, and then the workpiece that goes out of grinding still is the hyperbola face.Certainly the grinding of not adopting whatever then can grinding goes out the working face bearing of straight line.
Three, summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, a kind of method and isolated plant thereof of grinding bearing raceway logarithmic curve convexity are disclosed, use numerical control method, the device of controlling servo convexity trimmer is repaired out the concavity emery wheel of band logarithmic curve, thereby grinding goes out the raceway with the logarithmic curve convexity.
The present invention is achieved in that a kind of method of grinding bearing raceway logarithmic curve convexity, adopts the numerical control fully automatic system, it is characterized in that adopting the servo convexity trimmer device of design voluntarily; Adopt the interpolation computing method numerical control programming.When servo grinding wheel spindle planker entered the trimming wheel position, according to programming, digital control system calculated logarithmic curve convexity amount, controls servo convexity trimmer, repairs out the emery wheel of band logarithmic curve, thereby grinding goes out to have the tapered cylindrical raceway of logarithmic curve.The isolated plant that a kind of method of grinding bearing raceway logarithmic curve convexity is used, it is characterized in that: isolated plant comprises the setting of touch screen data parameter, PLC engineering digital control system, emery wheel planker shift servo system, servo convexity finishing controller, digital control system, servo-drive system is controlled the work of servo convexity finishing controller, servo convexity finishing controller comprises the trimmer planker again, stick, the finishing pen, servomotor, linear convexity cam and emery wheel, stick is installed on the trimmer planker, the fulcrum of stick can move up and down, servo motor shaft and linear convexity cam link, can drive cam rotates, when cam rotates, contact with the convexity contact point on the stick, move up and down thereby drive stick and be installed in the finishing pen that trimming wheel is used on the stick.
The invention has the beneficial effects as follows: owing to adopt the concavity emery wheel that to repair out logarithmic curve, thereby grinding goes out circular cone, cylindrical raceway with logarithmic curve, solved self rotational resistance of circular cone, cylindrical bearing, life-span and precision have been improved greatly, filled up the blank that China can not process at circular cone, cylindrical raceway grinding logarithmic curve, the supporting technological difficulties that solved for China's outlet and domestic marquee account make circular cone, cylindrical bearing reach international most advanced level.
Four, description of drawings:
Fig. 1 is a convexity trimmer digital control system principle schematic;
Fig. 2 is servo convexity finishing controller schematic diagram;
Fig. 3 is the schematic diagram that concerns of a finishing position and crushing amount;
Fig. 4 is the Matlab Presentation Graphics (amplification of Y direction) of bearing convexity logarithmic curve.
In Fig. 2: 1, emery wheel; 2, finishing pen; 3, fulcrum (point of rotation); 4, trimmer planker; 5, linear convexity cam; 6, servomotor; 7, convexity contact point; 8, stick.
Five, the specific embodiment:
According to Fig. 2, stick 8 is installed on the trimmer planker 4, and the fulcrum 3 of stick can move up and down, 6 of servomotors connect with linear convexity cam 5, can drive cam and rotate, when cam rotates, contact with convexity contact point 7, thereby driving stick 8 moves up and down, stick 8 moves up and down, and drives finishing pen 2 and moves up and down, and finishing pen 2 moves up and down, then during trimming wheel, can repair required curve according to programming.
According to Fig. 3, the relational expression of a finishing position and crushing amount is:
Wherein, convexity amount: OB-OA; Finishing pen servo displacement: AB.
Bearing convexity curve equation is:
Y=(2.447/1000) ln[1/1-(2X/44.383)
2] ... formula (1)
If make b=2.447/1000, a=44.383/2 is Y=b ln[1/1-(x/a) then
2].
If the width of raceway is W, the convexity amount is H, then makes yardstick and direction transformation rear bearing track convex degree curvilinear equation is:
Y=H-bw/ (2a) ln[1/ (1-(2x/w)
2)] ... formula (2)
Interpolation computing method:
From x=0 to x=W/2, X-axis is divided into 8 section 9 point (x
0, y
0), (x
1, y
1) ... (x
8, y
8), get y
8=0, all the other each y values by formula (2) are calculated.
Store calculating 9 good y values, from x=0, the x value of x=W/2 can be calculated by following quadratic interpolation formula for arbitrarily:
y＝p2(x)＝y
0+(y
1-y
0)/(x
1-x
0)(x-x
0)+((y
2-y
0)/(x
2-x
0)-(y
1-y
0)/(x
1-x
0))/(x
2-x
1)(x-x
0)(x-x
1)
Formula (3)
For from x
0To x
7Any x get (x by more preceding back principle at 2
0, y
0), (x
1, y
1), (x
2, y
2), for final stage, interval (x
7, x
8) on x can by the first two the point after a bit get (x
0, y
0), (x
1, y
1), (x
2, y
2).
Note that y
0To y
8Must calculate in advance, and when calculating arbitrarily y,, thereby can finish automatically by program controller because formula is only used arithmetic with interpolation formula.
In addition because whole section curve is all very smooth, only very just having rapid decline (the aforementioned calculation method has comprised to its processing) near edge, therefore the value of convexity amount H is to the almost not influence of shape of curve, it is for the convenience of calculating and illustrating, general desirable H=0.01 that H is introduced and be made as a small positive number.
For above computational methods are described, see an object lesson below:
If the wide W=20mm of bearing establishes convexity amount H=0.01mm 0-W/2 is divided into 8 five equilibrium (x
0x
1... x
8), try to achieve easily: x
0, x
1, x
2... x
8For: 0,1.2500,2.5000,3.7500,5.0000,6.2500,7.5000,8.7500,10.000 can be in the hope of y according to above computing rule and formula
0, y
1, y
2... y
8For: 0.01.., 0.01.., 0.0099,0.0098,0.0097,0.0095,0.0091,0.0084,0 visible curve is very smooth.
If known x=5.9925 asks corresponding curve y value;
Because x is at interval (5.000,6.2500), i.e. (x
4, x
5), therefore, get (x according to the principle of " more preceding, back 2 points "
3, x
4, x
5), (y
3, y
4, y
5) 3 (x as interpolation formula
0, x
1, x
2), (y
0, y
1, y
2) three interpolation point, i.e. x
0=3.7500, y
0=0.0098; x
1=5.0000, y
1=0.0097; x
2=6.2500, y
2=0.0095 substitution formula (3),
y＝y
0+(y
1-y
0)/(x
1-x
0)(x-x
0)+((y
2-y
0)/(x
2-x
0)-(y
1-y
0)/(x
1-x
0))/(x
2-x
1)(x-x
0)(x-x
1)＝0.0095
So when x=5.9925, y=0.0095.
The emery wheel planker is done servo moving under digital control system control, enter the crushing position to watch the absorption high-speed mobile earlier, is transformed into immediately with servo finishing translational speed in trim locations and moves, and this moment, emery wheel contacted with the finishing pen, a finishing beginning trimming wheel.In a finishing beginning trimming wheel, repair pen under the control of digital control system, servo moving up.
Digital control system by interpolation computing method, is constantly sent servo direction and the speed of finishing pen by the requirement of bearing convexity curve equation.After having repaired emery wheel, emery wheel planker and trimmer return initial point.Emery wheel is repaired out the concavity emery wheel of a band logarithmic curve under digital control system control.The grinding area that the concavity emery wheel planker of band logarithmic curve enters the bearing workpiece is carried out grinding to raceway, forms a band logarithmic curve crowned raceway face at raceway.
Claims (5)
1. the method for a grinding bearing raceway logarithmic curve convexity, it is characterized in that: adopt a cover robot control system(RCS), set the logarithmic curve parameter instruction by the human-computer dialogue touch-screen and control servo convexity trimmer, repair out the concavity emery wheel of band logarithmic curve, then by this wheel grinding raceway convexity.
2. the method for grinding bearing raceway logarithmic curve convexity according to claim 1 is characterized in that: described logarithmic curve parameter by formula
y＝p2(x)＝y
0+(y
1-y
0)/(x
1-x
0)(x-x
0)+((y
2-y
0)/(x
2-x
0)-(y
1-y
0)/(x
1-x
0))/(x
2-x
1)(x-x
0)(x-x
1)
Numerical control programming, application interpolation calculation method calculates logarithmic curve convexity amount by digital control system and controls servo convexity trimmer.
3. the method for grinding bearing raceway logarithmic curve convexity according to claim 1 and 2, it is characterized in that: when servo grinding wheel spindle planker enters the trimming wheel position, according to programming, digital control system calculates logarithmic curve convexity amount, control servo convexity trimmer, repair out the emery wheel of band logarithmic curve concavity.
4. isolated plant that uses by the method for the described grinding bearing raceway of claim 1 logarithmic curve convexity, it is characterized in that: isolated plant comprises the setting of touch screen data parameter, PLC engineering digital control system, emery wheel planker shift servo system, servo convexity finishing controller, digital control system, servo-drive system is controlled the work of servo convexity finishing controller, servo convexity finishing controller comprises the trimmer planker again, stick, the finishing pen, servomotor, linear convexity cam and emery wheel, stick is installed on the trimmer planker, the fulcrum of stick can move up and down, servo motor shaft and linear convexity cam link, can drive cam rotates, when cam rotates, contact with the convexity contact point on the stick, move up and down thereby drive stick and be installed in the finishing pen that trimming wheel is used on the stick.
5. the isolated plant that the method for grinding bearing raceway logarithmic curve convexity according to claim 4 is used, it is characterized in that: the cam track trace of the linear convexity cam of the linear trimmer of described servo convexity trimmer is a raceway logarithmic curve convexity curve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100184868A CN100462201C (en) | 2004-05-20 | 2004-05-20 | Method for grinding logarithmiccurve convexity of bearing ball track and its special apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100184868A CN100462201C (en) | 2004-05-20 | 2004-05-20 | Method for grinding logarithmiccurve convexity of bearing ball track and its special apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1579707A true CN1579707A (en) | 2005-02-16 |
| CN100462201C CN100462201C (en) | 2009-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100184868A Expired - Fee Related CN100462201C (en) | 2004-05-20 | 2004-05-20 | Method for grinding logarithmiccurve convexity of bearing ball track and its special apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430849C (en) * | 2005-12-14 | 2008-11-05 | 东方电气集团东方汽轮机有限公司 | Control system and method for economical NC machine tool |
| CN104526502A (en) * | 2014-12-23 | 2015-04-22 | 展彩娜 | Continuous automatic multi-grinding-head plate cambered surface slotting device |
| CN104589186A (en) * | 2014-12-23 | 2015-05-06 | 展彩娜 | Continuous and automatic curved groove slotting device for multi-grinding-head panel |
| CN110209170A (en) * | 2019-06-21 | 2019-09-06 | 珠海丽亭智能科技有限公司 | A kind of travel track antidote for the robot that stops |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285445C (en) * | 2003-11-19 | 2006-11-22 | 石家庄轴承设备股份有限公司 | Numerical control system and method for logarithmic curve convexity race grinding machine |
-
2004
- 2004-05-20 CN CNB2004100184868A patent/CN100462201C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430849C (en) * | 2005-12-14 | 2008-11-05 | 东方电气集团东方汽轮机有限公司 | Control system and method for economical NC machine tool |
| CN104526502A (en) * | 2014-12-23 | 2015-04-22 | 展彩娜 | Continuous automatic multi-grinding-head plate cambered surface slotting device |
| CN104589186A (en) * | 2014-12-23 | 2015-05-06 | 展彩娜 | Continuous and automatic curved groove slotting device for multi-grinding-head panel |
| CN104526502B (en) * | 2014-12-23 | 2016-09-14 | 南通东海机床制造集团有限公司 | Many grinding head boards automatic arch groove fluting apparatus continuously |
| CN110209170A (en) * | 2019-06-21 | 2019-09-06 | 珠海丽亭智能科技有限公司 | A kind of travel track antidote for the robot that stops |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100462201C (en) | 2009-02-18 |
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