Jack Kerlin
Articles by Jack Kerlin
Increase Your Productivity with the Right Boring Head
The results speak for themselves when you give your boring head choices the amount of time and consideration they deserve.
How to Avoid Bending Moment
Equal cutting forces affect the spindle in different ways with different tools. Unless/until machine tool builders or tool simulation software integrate bending moment limits, it’s up to you to use your best judgment. BIG DAISHOWA’s Jack Kerlin explains in the second installation of a two-part series.
Why Machinists Should Take Bending Moment As Seriously As Vibration
Slowing down to what seems like a safe speed may not be enough to prevent damage to a spindle or tool, especially a fine boring tool. Different than cutting torque, bending moment can greatly affect machining performance. First in a two-part series.
Force Multiplier: How Dual Contact Improves Tool Rigidity
A conventional toolholder is supported only by the connection between toolholder taper and spindle taper. Adding a second connection – between the spindle face and toolholder’s larger-diameter flange face – resists deflection up to 40% in long toolholders.
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