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Herringbones 101By Charles D. Schultz
I try to avoid technical matters here in the blog on the grounds that we have an entire magazine to cover the "hard stuff." Besides, very few topics can be adequately handled in just a few hundred words. My last posting mentioned herringbone gears though and it occurred to me that many of our younger readers may be completely unfamiliar with this once dominant gearing system. So if you think fabric patterns or deck planking when you hear the word "herringbone" — this week's blogs are for you.
Herringbones 102By Charles D. Schultz
Imagine for a moment that your boss invented the herringbone tooth form and tasked you with building machines to cut them. This was the situation Percy C. Day found himself in when he arrived in Milwaukee in 1913. Others were making them using shaping technology, so this well-understood machining method was leveraged with two horizontal-acting shapers timed together so the pinion-shaped cutters converged on the apex and clipped off the shaved chips at a common point. This became the typical machine design.
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