Originally Posted by
bevinp
I thought the rapid traverse rate was 65 ipm for the 1100, so did some searching on the Tormach website. I found some confusion there.
1. The current User Manual for the 1100 Series II states "Rapid traverse X Y Z - 65 ipm".
2. A machine comparison table states for the 1100 "Maximum feed rate" is 90 ipm and confirms it with the mm/m conversion.
3. On ther 1100 Specifications webpage it states "Feed rate" 90 ipm.
Is "Rapid traverse" the same function as "Max feed rate"? I assume so.
Whatever, the 1100 "Design Whitepaper" discusses the machining time difference between a machine with rapid traverse of 65 ipm versus a machine with much higher rapid traverse. The Paper argues that the difference in times is not significant enough to warrant the expense of greater speed and power. The following is a quote from the Whitepaper.
"A 1.5 hp CNC mill with 65 IPM rapids and no tool changer is ludicrous in a production environment, where minutes per piece are crucial. However, in prototype development, where run time is a tiny fraction of setup time, those extra minutes are simply not relevant. What is extremely relevant is the substantial cost saving afforded by that design."
The Whitepaper was last updated in 2006 and obviously the Series II mill and new accessories are pushing the 1100 suitability towards longer job runs. So it is simply a case of the buyer deciding on the priorities of applications and machining time versus reliability, support and price.
Bevin