On Sunday 02 February 2014 20:19:04 a k did opine: > Hi > i found that this and many other companies manufacture 3D printer > http://indimension3.com/our-3d-printers > They also manufacture head that attached to basically 3d CNC 3 axis > mill. So, question is why not just manufacture head as a another tool > to CNC mill on the CAT 40 or CAT 50 tool holder? > in this case every 3 axis CNC mill can be at the same times 3D > printer!!! With EMC2 possible to allocate up to 4 axis and 100 M code > to control only head and use 3 axis to move head in 3D area by 2.5 axis > motion/ ///////////// > Also i think it will be large manufacturing business - make 3D printing > head that work on regular CNC mill. > > thank you > aram
In theory it sounds great Aram, I even considered it myself. But the speed considerations involved in laying a consistent thickness of material, are highly dependent on the speed and accels of a print head that moves, and weighs perhaps a pound, often much less. Now, translate that motion into the table of a conventional mill whose x table probably weighs somewhere between 40 and 500 lbs. That level of instant turnaround performance while laying a continuously flowing layer of plastic, while also moving the y a large fraction of a bead diameter while the head, the x axis, is turning around at the end of its stroke with perhaps 50 thousandth of an inch to do all that while not building up a fence of too much material at that turn around point because the plastic keeps on flowing when the table is slowing to make the direction turnaround, simply is not within the reach of even my toy mill whose extended x table is likely close to 40 pounds. Now imagine trying to do that on an 12 x 54, $47,000 cnc mill where its table weighs perhaps 500 lbs. Common sense says it can't be done well enough to sell the product without finish rework. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
