Using helical interpolation to open holes is common practice. And in shallow holes or one-off projects, it’s a fine choice. But when production levels and volume increase, or when holes get deeper, rough boring will deliver higher productivity and repeatability.
Comparing Processes
Helical interpolation relies on the machine tool axes to produce output. A milling cutter, smaller than the desired bore size, is run along a helical path to open up the bore. In this approach, radial forces are constantly CNC Inserts exerted on the spindle, so increased wear on the bearings can be a concern, as well as tool stability for longer tools.
With a twin rough boring approach, the tool is only plunging axially, creating a more stable operation. The radial cutting forces are balanced, and the result is axial force back into the machine spindle. This is also the case when deeper bores require longer tool lengths. As tool length increases, the deflection of a milling cutter will decrease its productivity much faster than if using a boring tool. And when that productivity difference is amortized over a long production run, boring becomes increasingly valuable.
Related Economy
When looking at productivity and tool life, the main concern is typically the associated costs. Evaluating related tooling costs requires a look at the Surface Milling Inserts cost of perishable tooling, and the cost savings tied to a decrease in setup time and an increase in machine utilization. While the initial investment in precision boring tools may seem off-putting, below are a few key points to justify the investment and payback of boring versus milling:
Our?Series 319 ‘SW’ twin cutter boring heads?are designed for ultimate performance and versatility. A unique design feature allows the 319 to perform balanced or stepped cutting without additional accessories or adjustments simply by switching the mounting locations of the insert holders that have varied heights. This gives our system one more distinguishing feature – less components than our competition when switching between different roughing methods.
Watch this video?to learn more about KAISER 319 twin cutter boring heads.
For more detailed information,?click here?to view the product page for the SW twin cutter boring heads.
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