Smarty AT-300 - tests скачать в хорошем качестве

Smarty AT-300 - tests

I did some basic tests to find out the "performance envelope" I could get from the setup. Mainly interested to see if I really needed to swop belt position to the spindle as this is more of a hassle.. Turned a 25mm steel thick wall pipe with an infeed of 1.5mm at 500rpm, which it seemed to handle well (although at the limit with respect to infeed?) followed by turning a 10mm diameter rod at 1120 and 940rpm and 3mm infeed, which both performed OK. I then tested a somewhat larger cast iron piece, same infeed ie. at 3mm with no problem at 500rpm. Lastly I swopped the chuck to one with external jaws and tried a ca. 125mm steel piece (I wrote 100mm in the video, but see that is is actually larger). With a belt setting so I got the most torque, offering 175rpm at 50Hz, I could face with almost 4mm wide section of the tool engaged. I also managed to cut lengthwise with an infeed of 1mm. To be able to cut a 4mm slot (nearly) should mean that I can at least use a 2 or 3mm parting tool. All in all, not so bad for a "non-geared" machine! PS! I used a CCGT 09T302 AK101 insert bought from APT in the UK. https://www.shop-apt.co.uk/carbide-in... These are so called "aluminium inserts and have a positive cutting angle, hence is desirable to use on "weaker" machines (like this as well as the Myfords I have..). As is evident from the video there wasn't much of "chip-breaking". Not sure if this is because of the speeds/feeds involved or that the tool geometry of these inserts really do this at all. Maybe others know and can comment? PS! I need to make another adapter for the tool holder so I can manage turning these larger diameters in a better way (more "normal" setup). PS! The reason for not using the compound is that it is no longer needed for taper turning when you have a 2 axis Rocketronics ELS system and using a block adapter like I have used should be somewhat stiffer (one slide less hence can push harder ie. further room until chatter sets in).