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Spindle rotates at 24,000 RPM and is attached to a carriage moved along a 3/8 -12 lead screw. Carriage should move linearly at 0.30 in/sec. a) How fast should the lead screw rotate to maintain and produce the linear speed?

Spindle rotates at 24,000 RPM and is attached to a carriage moved along a 3/8 -12 lead screw. Carriage should move linearly at 0.30 in/sec. a) How fast should the lead screw rotate to maintain and produce the linear speed?

Automotive Technology: A Systems Approach (MindTap Course List)
Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Jack Erjavec, Rob Thompson
Chapter38: Manual Transmissions And Transaxles
Section: Chapter Questions
Problem 5RQ: Explain the role of shift rails and shift forks in the operation of a transmission or transaxle.
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1. Spindle rotates at 24,000 RPM and is attached to a carriage moved along a 3/8 -12 lead screw. Carriage should move linearly at 0.30 in/sec. a) How fast should the lead screw rotate to maintain and produce the linear speed? 2. What is the gearbox reduction ratio that best reduces the high efficiency speed of a motor chosen to fit the operational speed of the lead screw from Part 1? What is the calculated output torque from this gearbox? 3. The motor is added prior to the gearbox. If a 14 in slot must be milled using an incremental rotary encoder with 200 pulses per rev, how many pulses should the motor be commanded to move?
Transcribed Image Text:1. Spindle rotates at 24,000 RPM and is attached to a carriage moved along a 3/8 -12 lead screw. Carriage should move linearly at 0.30 in/sec. a) How fast should the lead screw rotate to maintain and produce the linear speed? 2. What is the gearbox reduction ratio that best reduces the high efficiency speed of a motor chosen to fit the operational speed of the lead screw from Part 1? What is the calculated output torque from this gearbox? 3. The motor is added prior to the gearbox. If a 14 in slot must be milled using an incremental rotary encoder with 200 pulses per rev, how many pulses should the motor be commanded to move?
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