Challenges with Long Overhangs, Vibration & Chatter
16.11.2020 · Kennametal ·
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In this webinar, our experts will discuss some common problems encountered in machining demanding applications in aerospace and general engineering and share best practices and solutions. Learn more about vibration free boring bars and how to overcome challenges with long overhangs, vibration and chatter.
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2:00 - What is vibration?
3:32 - What is the difference between vibration and chatter?
4:49 - Factors of vibration in machining dynamics
5:12 - Types of vibration (free, forced, and self-excited)
7:45 - Free or Natural vibration and machining dynamics
8:40 - Forced vibration and machining dynamics
9:22 - Self-Excited or chatter and machining dynamics
10:14 - Static stiffness, damping ratio, and dynamic stiffness
11:22 - Chatter theory & stability
12:12 - What does it mean to be in phase and out of phase?
14:46 - How does chip thickness cause chatter?
16:36 - How can you predict what vibration is going to be? And, how can you control it?
17:34 - What is the difference between stiffness and damping?
19:54 - Process damping
21:07 - Stability diagrams
23:47 - What do we mean by speed?
24:12 - What is our goal in dealing with chatter and vibration?
27:07 - The problems to be solved by boring bars
29:09 - Vibration free boring bars
32:14 - Numbering system
32:24 - Bolt-on head
33:14 - Dynamic absorber
35:42 - How are vibration free boring bars different from boring bars we’ve offered before?
36:56 - How to install these boring bars?
39:13 - Troubleshooting
41:31 - Why do carbide boring bars help against vibration problems?
42:45 - Recap
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