If the flutes are regularly spaced, it can still generate periodic vibrations, causing chatter, regardless whether the number of flutes is even or odd. Irregular spacing can help.
@KyoceraPrecisionTools
3 ай бұрын
You're right that irregular spacing of flutes, also referred by some as variable pitch, can help reduce chatter. Another effective strategy is using a variable helix angle. A variable helix angle can be either variable up and down the flute or alternating helix angles per flute (such as 35/38 degrees, like in our ZAP series). This variation in helix angles spreads the cutting forces more unevenly, which can significantly reduce vibrations and improve surface finish. Both variable pitch and variable helix tools are designed to address the same problem-reducing chatter by breaking up the regularity of the cutting forces. Depending on the specific machining scenario, combining both strategies can often yield the best results.
@ChainLightningbolts
3 ай бұрын
Really like this style of video.
@KyoceraPrecisionTools
3 ай бұрын
Thanks so much for the awesome feedback! We're super happy to hear you liked the video style. If there are any specific topics you like to see in a future videos, just let us know. Thanks for being part of our community!
@agg42
3 ай бұрын
Awesome video. Can you do one about helix angles?
@KyoceraPrecisionTools
3 ай бұрын
Thank you for your awesome feedback! We're glad you enjoyed the video. We appreciate your suggestion about helix angles and have added it to our list of topics to cover. While we have a few topics lined up for our upcoming videos, we look forward to addressing helix angles in the future. Stay tuned for more content, and thanks for your support!
@misupercooner
3 ай бұрын
So would you suggest roughing with say a 4 flute and finish with a 5,7,9 flute?
@KyoceraPrecisionTools
3 ай бұрын
Yes, the material you're machining is a critical variable in selecting the number of flutes. For instance, softer materials like aluminum typically benefit from fewer flutes (such as 3 or 4) for both roughing and finishing to allow for better chip evacuation. Harder materials like steel might use more flutes (like 4 for roughing and higher for finishing) because they can handle the increased cutting forces and benefit from the additional cutting edges. While you can achieve a good quality finish with a lower flute count, it's generally preferable to use more flutes when possible. Higher flute counts can achieve the same or better finish in a shorter amount of time due to the increased number of cutting edges engaging the material. In summary, while a 4-flute tool is often used for roughing in a variety of materials, and higher flute counts are used for finishing, the specific material you're working with should always be a key consideration in your tool selection.
@treyroman7170
3 ай бұрын
Can you give more info on the parameters of the cuts you did please? Tool diameter, axial and radial doc, tool holder?
@KyoceraPrecisionTools
3 ай бұрын
Material: Inconel 718 ~ 28 HRc Engagements: Radial (Ap) 1.25” - 250% Depth to Diameter and Axial (Ae) .035” - 7% Width to Diameter Total Linear Inches Milled: 324” Diameter: 0.5 5 Flute High Performance End Mill 126 SFM / 963 RPM / .003 Chip Load per Tooth / 14.5 IPM 22.3 Minutes in Cut to Complete Above 7 Flute High Performance End Mill 140 SFM / 1070 RPM / .0022 Chip Load per Tooth / 16.4 IPM 19.8 Minutes in Cut to Complete Above Multi-Carb End Mill 140 SFM / 1070 RPM / .0027 Chip Load per Tooth / 26 IPM 12.5 Minutes in Cut to Complete Above
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