Transcription of SOLUTION (10.1) Known: Schematic and Given Data
{{id}} {{{paragraph}}}
Example: tourism industry
SOLUTION (10.1) Known: Schematic and Given Data
10-1 SOLUTION ( ) Known: A special C-clamp uses a diameter Acme thread and a collar of effective mean diameter. Find: Estimate the force required at the end of a 5-in. handle to develop a 200 lb clamping force. Schematic and Given Data: 6 in. Acme threadd = 5/8 Assumptions: 1. Coefficients of running friction are estimated as for both the collar and the screw. 2. The screw has a single thread. Analysis: 1. From section , and considering that service conditions may be conducive to relatively high friction, estimate f = f c (for running friction). 2. From Table , p = in., and with a single thread, L = in. 3. From Fig. (a), = and dm = d p2 = = in.
Schematic and Given Data: Load 3,500 lb Double-threaded Acme stub screw d = 2 in. dc = f = 0.11 f f = 0.10 c dc fc dm 2.75 in. Assumptions: 1. The starting friction is about 1/3 higher than running friction. 2. The screw is not exposed to vibration. Analysis: 1. From Table 10.3, there are 4 threads per inch. p = 1/4 = 0.25 in.
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: