The frame we increased the stiffness of the machine, yes is pretty heavy to install and move, but the weight is the key of less vibration during operation cutting ,we changed from pneumatic z axis of the generation 2 ,to lower the weight of axis z with a normal counter weight balance, so with this system the z axis is pretty basic but we see is the most reliable ,is even faster can reach 5.000 mm per minute, and the axis x can reach even 10.000 mm per minute in all axis interpolated but this was done for testing the maximum speed( with this speed we cut a bottom in 5 minutes (24 lines) and top in 12 minutes 936 lines ). we tested on many board cuts ,and we designed the best product for high quantity production cutting with this 3rd generation. so basically this to explain difference in open loop and close loop,in industrial machine is preferred the close loop controller. the machine still run and loosing the correct position because the other 2 axis still running correctly( can happen in case the electric failure from the grid, there is a drop of voltage ). Īnother example with open loop if there is a mechanical problem on 1 axis or electronic problem from a servo drive. so normal cnc machine with servo motor with encoders incremental every time you finish a board or maybe 5 boards ,need to go home.to find again the zero position and the zero position is given from the limit switch,so basically the precision of this type is lower compare to absolute servo encoders, but the incremental servo encoders can be used with simple controller from normal computer like match 3. the absolute encoder what is ?…is a rotation controller mounted on the servo motor,knowing every time the real position ,even if the machine is off… and there is any manually movement on some axis, the absolute encoder will be exactly know the new position.when you turn on the machine. if there is a mismatch of position on 1 axis the controller stop the machine,this bring higher precision,because check every movement in a loop. What is meaning ?,all the axis X Y Z are connect in a loop. New data controller and servo motors with absolute encoders with close loop. The new 2020 version of our production of cnc shaping machines, we did new improvement on this latest version.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |