- A Latching Mechanism Has Steel Mating Surfaces Of 100 And 300 Bhn Rubbing Back And Forth Over A Distance Of 30 Mm Each T 1 (67.4 KiB) Viewed 59 times
A latching mechanism has steel mating surfaces of 100 and 300 Bhn rubbing back and forth over a distance of 30 mm each time the latch is operated. Lubrication is questionable (the surfaces are supposed to get a drop of oil every few months). The latch is operated an average of 30 times per day, every day (see Figure P9.19). a. Estimate the volume of the softer and harder material that will wear away after 6 months. The vertical load is (150+ YZ/10) Newtons. Latch closed B FIGURE P9.19 -30 mm Latch open Steel, 100 Bhn Steel, 300 Bhn b. A new design has been released. Estimate the volume of the softer and harder material that will wear away after 6 months if a softer steel pawl is used in the latch (use 75 Bhn instead of 100 Bhn, with only 25 mm of travel). The vertical load is still (150 + YZ/10) Newtons.