HeyJaredTony Schmitz
- Indexed articles, last 90 days
- 3
- Latest publication
- Oct 1, 2026
- Outlet visibility, for Modern Machine Shop
- Top 5M sites
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- Aug 1, 2026
Latest articles
Why Milling Force Isn't Constant — And How to Predict It (opens the original)
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The cutting force in milling can be modeled using the process geometry. The milling force varies because the chip thickness varies, even in the absence of tool or workpiece vibrations. Figure 1 shows this variation for both conventional (up) and climb (down) milling operations. Note that the chip thickness increases with tool rotation during up milling and decreases during down milling. For the latter, we refer to this as chip thinning. The entry, or start, angle for up milling is Øs = 0, while
Chatter in Turning: How Tool Vibration Affects Machining Stability (opens the original)
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In turning, the cutting tool is not rigid, so the cutting force causes tool vibration. When the tool is vibrating as it removes material, these vibrations are imprinted on the workpiece surface as a wavy profile. Figure 1 shows an exaggerated view, where the initial impact with the workpiece surface causes the tool to begin vibrating and the oscillations in the normal direction to be copied onto the workpiece. When the workpiece begins its second revolution, the vibrating tool encounters the wav
How Sample Partitioning Optimizes Milling Stability Predictions (opens the original)
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For discrete part production by milling, the optimum combination of spindle speed and axial depth is desired to maximize material removal rate (MRR) and minimize cost. To identify the optimal spindle speed and axial depth combination that provides maximum MRR without chatter, models are available to predict stability maps, which separate spindle speed and axial depth combinations that are stable from those that result in chatter. These models have two primary inputs: 1) the tool tip frequency re
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