Video: Retention Knob Tightening And Toolholder Deflection
This footage illustrates how the toolholder taper is measured in a test designed to capture the retention knob’s effect on the shape of the toolholder taper.
In a tapered toolholder, tightening the retention knob can produce deformation of the toolholder that can prevent the holder from seating properly in the spindle. J&M Machine offers a “high-torque” retention knob design that attempts to address this problem. This knob has threads that grip deeper into the holder, where the holder has more mass to resist deformation. This video, which the company produced, shows the toolholder deformation being measured for the high-torque and standard knob designs. The article under “Editor Picks” at right provides more detail.
Related Content
-
Toolpath Improves Chip Management for Swiss-Type Lathes
This simple change to a Swiss-type turning machine’s toolpath can dramatically improve its ability to manage chips.
-
How to Troubleshoot Issues With Tool Life
Diagnosing when a tool is failing is important because it sets an expectation and a benchmark for improvements. Finding out why gives us a clue for how to fix it.
-
Grooving Attachment Streamlines Operation by 75%
A grooving attachment enabled Keselowski Advanced Manufacturing to reduce cycle times by over 45 minutes on a high-value, high-nickel part feature.
