The application of synchronous belt is very extensive, from the machine tool, automobile, detector, printer, copier, electric tools, household appliances can see its figure, it integrated belt drive, chain drive and gear drive their respective advantages. So how accurate is its transmission? Jinan annai special industrial belt company and you discuss the transmission precision of synchronous belt.
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The synchronization belt (wheel) itself has no precision to speak of, only before the motor after the load, it has a precision.
Once the equipment has a clear precision requirement, then the problem will come. Aner company puts forward three questions for you and yourself to think about:
1. What accuracy can the synchronous belt drive achieve in the case of open loop? What does precision have to do with?
2. What accuracy can the synchronous belt drive achieve in semi-closed loop? What does precision have to do with?
3. What accuracy can the synchronous belt drive achieve in closed loop? What does precision have to do with?
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1. The synchronous pulley and synchronous belt of single-stage or multistage transmission, only from the device itself, not high accuracy and repeatability is very poor, why because a synchronous belt is elastic deformation, the other is the accuracy of synchronous belt wheel is not like gear, rack, seven, eight, precision and no testing gear many project to control the machining accuracy, generally pulley pitch cumulative deviation will have + / - 0.10 ~ 0.15, so there is no feedback of pulley drive its repeatability can think of. In general, the transmission accuracy can be significantly improved by selecting excellent quality synchronous belt, properly tensioning synchronous belt and improving the precision of synchronous wheel. There are two sub-questions: if you want to improve the precision of the synchronous wheel, is there any other way besides buying the imported one? How many inspection items are there for wheels? Of course, if it is a multistage reducer, the transmission accuracy decreases due to the transmission ratio I.
2. The so-called semi-closed loop refers to that the feedback unit is installed on the motor, while the transmission unit has no feedback, so the accuracy achieved by the equipment depends on the accuracy of the transmission itself and the accuracy of the control system.
3. Equipped with synchronous belt transmission grating ruler: light theoretically, grating precision and control precision can achieve much, is how many driving accuracy and can achieve high precision equipment, but in fact, because of the synchronous belt is a elastomer after all, it must be in high speed up, stop, reverse "serpentine movement" phenomenon, cause the system speed fluctuation, if a lighter belt, the machine is twitching. Like a printer with synchronous belt transmission, but the print job, it is to avoid the acceleration and deceleration phase, in uniform phase inkjet, only so can print very good effect, form, character will not dislocation, this need how many or repetitive positioning accuracy, really need precision, synchronous belt is just as the first level transmission, followed by screw. Gear rack, turbine worm to achieve the drive of the load.
