CUTTING AN EXTERNAL ACME THREAD

Series: Machine Shop Work Series - Operations on the Engine Lathe

Duration: 15 min

Year Published: 1942

Creator: West Coast Sound Studios; U.S. Office of Education

Format: 16mm

Color: B&W

Sound: sound

Description: Produced by US Office of education. Description of the acme thread, giving its shape and emphasizing that the broad surfaces on the thread provide for the transmission of power and motion with the least amount of friction. "The operator is shown studying a drawing and a table showing the dimensions of acme threads are used by him to get the dimensions of the thread he is to cut." "The method used when setting the cross-feed index for the roughing cut is clearly shown as is also the manner in which the operator sets the stocking tool to the work and checks this setting after a preliminary cut has been taken." A magnified closeup gives the viewer a stocking tool, an instrument that is used to discuss its shape and the necessity for using such a tool. The various steps followed when taking the roughing cut are described in detail from the beginning of the cut to the finish.

Complete Record: Instructional lathe film explaining acme thread form and step-by-step cutting: dimension lookup, crossfeed indexing, stocking tool, finishing tool/setting gage, threading dial use, gauging and correcting oversize.

Metadata Source:University of Georgia Brown Media Archives