CN1962196A - Method for controlling constant linear speed grinding of grinding machine - Google Patents
Method for controlling constant linear speed grinding of grinding machine Download PDFInfo
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- CN1962196A CN1962196A CN 200510110331 CN200510110331A CN1962196A CN 1962196 A CN1962196 A CN 1962196A CN 200510110331 CN200510110331 CN 200510110331 CN 200510110331 A CN200510110331 A CN 200510110331A CN 1962196 A CN1962196 A CN 1962196A
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- grinding
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- emery wheel
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Abstract
The invention relates to a method for controlling the constant-speed abrasion of grinder, wherein it comprises fixing the linear speed of abrasive wheel and inputting it into PLC; fixing the feeding zero position n1; adjusting the distance between diamond pen sharp and axle of abrasive wheel and inputting it into PLC; adjusting the feeding distance n2 of abrasive wheel; adjusting the distance between diamond pen sharp with contacted surface of abrasive wheel, and inputting it into PLC; PLC reduces n2 from n1 to obtain the radius of abrasive wheel, and via formula n=v/2 pir, fixing the adjusted rotation speed of abrasive wheel; via n=60f/p, calculating out the frequency of frequency changer, while f means operation frequency, p means polar number as constant; inputting said frequency into the frequency changer to control the rotation speed of abrasive wheel. The invention can control the abrasion and improve abrasion efficiency, without increasing cost.
Description
Technical field
The present invention relates to a kind of grinding machine wheel grinding device, relate in particular to the method for this grinding machine with control emery wheel constant linear speed grinding in the wheel grinding device.
Background technology
Grinding machine uses the emery wheel of rotation that workpiece is carried out grinding, and the rotating speed of emery wheel calculates according to the diameter of emery wheel, and emery wheel is turned round under the constant high linear speed state that allows, and this is desirable grinding state.
It is to adopt PLC control that present self-acting grinding machine has many, they can satisfy required precision, but in continuous grinding, emery wheel diminishes because of finishing, rotating speed but can not get adjusting, and therefore linear velocity reduces, and this relation from linear velocity and rotating speed and emery wheel just can be seen: (wherein: r is a radius to n=v/2 π r, n is a grinding wheel speed, and v is a linear velocity).The grinding state is changed, influence grinding performance, thereby influence grinding accuracy and grinding efficiency, make the precision stability variation of workpiece, defective work increases.
How on existing self-acting grinding machine basis, make after emery wheel is because of finishing, can also realize that constant linear speed grinding is a pendulum in the science and technology personnel technical issues that need to address in front.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of method of controlling constant linear speed grinding of grinding machine, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention realizes by following steps:
Determine grinding speed and the result is input among the PLC;
Determine machine tool feed zero-bit n1: the Buddha's warrior attendant nib on the trimmer and the distance in emery wheel axle center also are input to the result among the PLC;
Repair emery wheel feeding distance n2: the Buddha's warrior attendant nib on the trimmer is in the surperficial contact distance of each and emery wheel, and the result is input among the PLC;
PLC deducts the emery wheel axle center and repaiies emery wheel feeding distance n2 and calculate grinding wheel radius apart from n1, and determines the grinding wheel speed of required adjustment according to formula n=v/2 π r;
With the grinding wheel speed of required adjustment, calculate the frequency converter running frequency according to formula n=60f/p; Wherein: f is a running frequency, and p is a number of pole-pairs, and p is a constant input;
Required frequency is input to the rotating speed of frequency converter in order to the control emery wheel;
Compared with prior art, the invention has the beneficial effects as follows: under the prerequisite that increases cost hardly, control emery wheel constant linear speed grinding has improved grinding efficiency, both can be used for the large scale wheel grinding, also is applicable to the grinding of small size emery wheel.
Description of drawings
Fig. 1 is that grinding wheel radius calculates schematic diagram;
Fig. 2 realizes structural representation of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
By Fig. 1, Fig. 2 as seen: the determining of machine tool feed zero-bit by such realization: with support be installed on the lathe bed near switch 14, feed mechanism 13, be installed in the sensor block 15 on the feed mechanism, servomotor 17 and screw mandrel 16 are formed the feeding zero-bit and are determined device.
After starting the initial point function of search, servomotor 17 drives screw mandrels 16 and rotates, and the rotation of screw mandrel 16 drives feed mechanism 13 through the feed screw nut and does the straight line that leaves emery wheel 9 move on guide rail 12; Servomotor runs slowly after sensing sensor block 15 near switch 14, and after throwing off sensor block 15 near switch 14, servomotor moves with extremely low speed, stops when servomotor sends the pulse of Z phase.
The position that stops is exactly the zero-bit of determining, its precision can reach in 3 microns; After the feeding zero-bit is determined to finish, measure Buddha's warrior attendant nib 11 on the axle center of emery wheel 9 and the trimmer 10 apart from n1, and n1 input PLC, because trimmer 10 is fixedly mounted on the feed mechanism 13, so, the feeding zero-bit determines that the precision that can reach can embody on n1, promptly the precision of n1 also can reach in 3 microns; Feed mechanism 13 is with the direction feeding of trimmer 10 to emery wheel 9 during normal process; Emery wheel 9 is owing to the finishing of trimmer 10 diminishes, being recorded in the PLC apart from n2 of trimmer 10 feedings; Machine tool feed zero-bit and emery wheel axle center deducted apart from n1 repair emery wheel feeding distance n2 and just calculate grinding wheel radius, and, adopting the PLC calculation function, grinding wheel radius is computing at any time.
Formula n=v/2 π r and formula n=60f/p are write PLC with the PLC programming language, and grinding wheel radius generation is advanced formula, just can calculate the running frequency of frequency converter; Frequency is write frequency converter or with analog quantity control frequency converter rotating speed, just finishes constant linear speed grinding of grinding machine control.In each finishing circulation,, minimum for linear velocity affects because the waste of emery wheel in grinding is very little, this error can be ignored to the influence of grinding, after can being set in each trimming wheel, PLC calculates the running frequency of the frequency converter that makes new advances automatically, and news speed refreshes frequency converter frequency.
Claims (1)
1. method of controlling constant linear speed grinding of grinding machine, realize by following steps:
Determine grinding speed and the result is input among the PLC;
Determine machine tool feed zero-bit n1: the Buddha's warrior attendant nib on the trimmer and the distance in emery wheel axle center also are input to the result among the PLC;
Repair emery wheel feeding distance n2: the Buddha's warrior attendant nib on the trimmer is in the surperficial contact distance of each and emery wheel, and the result is input among the PLC;
PLC deducts the emery wheel axle center and repaiies emery wheel feeding distance n2 and calculate grinding wheel radius apart from n1, and determines the grinding wheel speed of required adjustment according to formula n=v/2 π r;
With the grinding wheel speed of required adjustment, calculate the frequency converter running frequency according to formula n=60f/p; Wherein: f is a running frequency, and p is a number of pole-pairs, and p is a constant input;
Required frequency is input to the rotating speed of frequency converter in order to the control emery wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510110331 CN1962196A (en) | 2005-11-11 | 2005-11-11 | Method for controlling constant linear speed grinding of grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510110331 CN1962196A (en) | 2005-11-11 | 2005-11-11 | Method for controlling constant linear speed grinding of grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1962196A true CN1962196A (en) | 2007-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510110331 Pending CN1962196A (en) | 2005-11-11 | 2005-11-11 | Method for controlling constant linear speed grinding of grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1962196A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218703A (en) * | 2011-04-08 | 2011-10-19 | 广州遂联自动化设备有限公司 | Constant intelligent polishing wheel wear compensation control method |
| CN104889888A (en) * | 2015-05-21 | 2015-09-09 | 新乡学院 | Grinding wheel constant linear speed control system and method |
-
2005
- 2005-11-11 CN CN 200510110331 patent/CN1962196A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218703A (en) * | 2011-04-08 | 2011-10-19 | 广州遂联自动化设备有限公司 | Constant intelligent polishing wheel wear compensation control method |
| CN102218703B (en) * | 2011-04-08 | 2014-11-05 | 广州遂联自动化设备有限公司 | Constant intelligent polishing wheel wear compensation control method |
| CN104889888A (en) * | 2015-05-21 | 2015-09-09 | 新乡学院 | Grinding wheel constant linear speed control system and method |
| CN104889888B (en) * | 2015-05-21 | 2017-10-03 | 新乡学院 | A kind of grinder wheel control by permanent velocity system and control method |
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