In the design process of transmissions, one major criterion is the
resulting noise emission of the powertrain due to gear excitation.
Within the past years, much investigation has shown that the
noise emission can be attributed to quasi-static transmission error.
Therefore, the transmission error can be used for a tooth contact
analysis in the design process, as well as a characteristic value for
quality assurance by experimental inspections.
Excessive machine tool vibration during a precision grinding operation can result in poor workpiece quality in the form of chatter, rough finishes, burn, etc. One possible reason for
excessive vibration is directly associated with the relationship
between natural frequencies of a machine tool system and the
operating speed of the grinding wheel spindle.
Attached photos (Figs. 1-2) show a
bushing to locate one single bore. This
will be used to locate one single bore
diameter of a gear wheel. What is (the
latest) technology for common clamping a
bushing to locate multiple bore diameters
in hobbing?
No, not that president! I mean Matt Croson, the new president
of the American Gear Manufacturers Association, who
started in June and has been busy getting to know the gear
industry and AGMA's members.