HOBBING A SPUR GEAR, PT 1, SETTING UP THE CHANGE

Duration: 15 min

Creator: Office of Education (Department of Health, Education, and Welfare)

Color: B&W

Sound: Optical sound

Description: Describes selection of the hob, tells how to select change-gear combinations for speed, feed, and index. Tells how to identify the correct gears, mount the change gears, adjust for backlash, and how the changegear trains are interrelated. From the MACHINE SHOP WORK series. Operations on the Gear Hobbing Machine, No. 1