Effect of Hob Sharpening Errors
Effect of Hob Sharpening Errors
Hobs resharpened on an arbor in resharpening machine that runs eccentrically will result in sharpening errors that give the same 11wandering 11profile characteristic to an involute profile as an eccentrically mounted properly sharpened hob in a hobbing machine. Other sharpening errors to the base rack that effect hob profile are
Hob cutting faces are sharpened with negative rake.
Hob cutting faces are sharpened with positive rake.
Hob cutting faces are sharpened by unequal amounts resulting in uneven flute spacing.
A hob sharpened with incorrect lead will result in one end of the hob being larger in diameter than the other. As the hob is shifted across its usable life in the hobbing machine, a change in the size of the work piece will be evident.
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Protuberance hobs
Protuberance hobsHobs with protuberance are roughing cutters whose profile differs from the standard... - PA20° PCD 180mm β15° Disk Type Gear Shavng Cutter with Module m1.25~m6
- ?PA20° PCD 38mm Shank Type Gear Shaper Cutter with Module m1~m3.75
- HSS M2, M35 Gear Hobbing Cutters with Protuberance
- ?PA30° PCD 38mm Shank Type Gear Shaper Cutter with Module m1.75~m4
- The Method of Hob Computation
- PA20° Profile DIN3972 Standard Gear Cutting Hob with Module m3.75
