Transcription of POWER SCREW EXAMPLE PROBLEM - Kettering University
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POWER SCREW EXAMPLE PROBLEM - Kettering University
POWER SCREW Joyce worm-gearScrew JackPOWER SCREW EXAMPLE PROBLEMR eference: Shigley/page square thread POWER SCREW has a major diameter of 32-mm and a pitch of 4-mm with doublethreads, and it is to be used in an application similar to that of the figure below. Applicable data arethread and collar coefficient of friction equal to , collar diameter of 40-mm, and a load of SCREW . depth, thread width, mean or pitch diameter, minor diameter, and required to rotate the SCREW against the required to rotate the SCREW with the And Acme Threads with Preferred Pitches for Acme ThreadsScrew thread with Thrust CollarddPmmddPmmlnPmmmr= = == = === =232423032428248()()()()TFdlddlFdTTNmRmm mccRR=+ += + + =+=2264000030200080080030003000800086400 0080040215941024262.
threa ds, and it is to be used in an application similar to that of the figure below. Applicable data are thread and collar coefficient of friction equal to 0.08, collar diameter of 40-mm, and a load of 6.4-kN per screw. Determine: a. Thread depth, thread width, mean or pitch diameter, minor diameter, and lead. b.
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