So the theory of high-speed machining is that you keep spindle speeds as high as you can, so you can remove chips the fastest, as long as you have the power to do it. Since this is a constant-torque spindle between its operating range of 8,000 and 24,000 RPM, that means at 12,000 RPM it is a 1.5HP spindle. But that horsepower only comes at the maximum speed of 24,000 RPM. My Avid Benchtop Pro has a 2.2kW spindle, about 3 HP. He said that was the way to make money, big cuts taken fast and you can beat the other shops. I watched one fellow run up the feedrate and cut depth on a lathe job until it seemed the machine was groaning. When I was a consultant in California, my office was in a building that had a half-dozen machine shops, so I got to learn a little. I hope some of my pals will look and listen to the video to see if I am getting tool chatter, and if they think I am pushing the machine too hard. The results seem excellent, but I am not a machinist. The previous owner did not spring the 120 bucks-a-gallon for Trico MD-7. The MD-1200 has two separate lines, but I broke the anti-siphon valve on one side trying to get all the gummed up old lubricant out of it. I used Trico MD-7 cutting fluid in an MD-1200 micro-drop dispenser I got on eBay used. The other flange I set the speeds and feeds manually, and tried to make the operation as fast as possible. One flange had speeds and feeds as set by the Solidworks CAM Technology Database. I load the G-code into my Avid Benchtop Pro and made test cuts. I believe the material is 6063, so a little more gummy than 6061. I made a 3/4" hole and an ellipse in a piece of Home Depot aluminum angle. Rako Studios » Media » Suffering-with-software » Solidworks CAM, CAMWorks first chips Solidworks CAM, CAMWorks first chips I use SolidWorks CAM by CAMWorks to make some test cuts in aluminum angle, using my Avid Benchtop Pro milling machine.
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