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Lab talk, the good, the bad, and the ugly
Dental-CAM
Zirkon Zahn M1 wet heavy - for CoCr and Titan?
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<blockquote data-quote="DMC" data-source="post: 135919" data-attributes="member: 430"><p>Almost word for word same from most Ti machining literature I've seen.</p><p> </p><p>Vaiable helix tool geometry and variable spindle RPMs help. HAAS has this feature of spindle rpm variations.</p><p> </p><p>Never heard the bit about each layer needing to be different depth? What makes any One layer different from the last?</p><p>Did you read this from a credibal source, or new friends make this One up? Maybe true, but I have just never read this anywhere...?</p><p> </p><p>We just plunge @ 1-3 degrees using sum3d setting this in tool parameters...also never seen an arc into Ti as a rule. Where did you find that..??</p><p> </p><p>Why would this help I am wondering? 1-3 degrees gradually introduces the tool into the stock just fine.</p><p> </p><p>We have gone lower and lower RPMs and keeping feeds kinda high. The tool sounds much happier!</p><p> </p><p>Mucho vibrations required me to re-desing my fixture. Now, all is happy happy.</p><p> </p><p>Roughing w/4mm @ 8000rpms or less now...feeds over 1000mm/min. Tool life is not that bad.</p><p> </p><p>Ti is very flexible and springy. Grab a long spiral chip and bend it some. "BOING" it is very much like a spring. Aluminum....no.</p></blockquote><p></p>
[QUOTE="DMC, post: 135919, member: 430"] Almost word for word same from most Ti machining literature I've seen. Vaiable helix tool geometry and variable spindle RPMs help. HAAS has this feature of spindle rpm variations. Never heard the bit about each layer needing to be different depth? What makes any One layer different from the last? Did you read this from a credibal source, or new friends make this One up? Maybe true, but I have just never read this anywhere...? We just plunge @ 1-3 degrees using sum3d setting this in tool parameters...also never seen an arc into Ti as a rule. Where did you find that..?? Why would this help I am wondering? 1-3 degrees gradually introduces the tool into the stock just fine. We have gone lower and lower RPMs and keeping feeds kinda high. The tool sounds much happier! Mucho vibrations required me to re-desing my fixture. Now, all is happy happy. Roughing w/4mm @ 8000rpms or less now...feeds over 1000mm/min. Tool life is not that bad. Ti is very flexible and springy. Grab a long spiral chip and bend it some. "BOING" it is very much like a spring. Aluminum....no. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAM
Zirkon Zahn M1 wet heavy - for CoCr and Titan?
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