MechanismLongmans, Green, and Company, 1905 - 408 страници |
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Страница 38
... Rack . If , in the case of spur wheels , the radius of one of the cylinders is made infinite , the corresponding ... rack . As the remaining cylinder rotates about its axis , the rack slides between guides ( Fig . 49 ) , and , barring ...
... Rack . If , in the case of spur wheels , the radius of one of the cylinders is made infinite , the corresponding ... rack . As the remaining cylinder rotates about its axis , the rack slides between guides ( Fig . 49 ) , and , barring ...
Страница 43
... rack is an example of one turning , one sliding , and one higher pair . Very frequently the pair of wheels is repeated over and over again , and we then get a " train of wheels . " On each spindle , except the first and the last , there ...
... rack is an example of one turning , one sliding , and one higher pair . Very frequently the pair of wheels is repeated over and over again , and we then get a " train of wheels . " On each spindle , except the first and the last , there ...
Страница 46
... rack on the turret having a pitch - circle diameter of 17 feet 2 inches nearly . Find the time to make one complete revolution of the turret . The arrangement is as sketched in Fig . 58. The circumference of the pitch circle on the ...
... rack on the turret having a pitch - circle diameter of 17 feet 2 inches nearly . Find the time to make one complete revolution of the turret . The arrangement is as sketched in Fig . 58. The circumference of the pitch circle on the ...
Страница 52
... Rack . -In the arrangements just described the uniform speed of the table will be precisely the same ( neglecting any slipping of the belt ) in the two strokes ; and , unless the tool is reversed at each end of the stroke , valuable ...
... Rack . -In the arrangements just described the uniform speed of the table will be precisely the same ( neglecting any slipping of the belt ) in the two strokes ; and , unless the tool is reversed at each end of the stroke , valuable ...
Страница 53
... rack attached to the underside of the table A. On the return stroke , the belt is on M , and the motion is transmitted direct from K , through G1 and G2 , to the rack . The direction of motion of the rack is thus reversed , and , by ...
... rack attached to the underside of the table A. On the return stroke , the belt is on M , and the motion is transmitted direct from K , through G1 and G2 , to the rack . The direction of motion of the rack is thus reversed , and , by ...
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actuating addendum circle angle angular velocity angular-velocity ratio arc of approach attached axis B.Sc belt bevel wheel block centripetal acceleration circular arc common normal connecting rod connecting-rod coupler crank arm crank pin crank radius crank shaft crosshead Crown 8vo curve cutter cutting cycloidal cylinder described diameter direction displacement distance draw driving ELEMENTARY ellipse engine equal equivalent crank fixed centre gear horizontal Illustrations intersect involute keyed kinematic lathe leading screw length lever line of centres line of stroke machine mandrel mean position meshes move number of teeth obliquity obtained oscillating P₁ P₁A P₂ parallel motion perpendicular pinion piston pitch circle pitch point plane pulley rack radii reciprocating piece relative represent the velocity revolution revolutions per minute roller rolling circle shape shown in Fig sliding slot spindle spur wheel straight line tool tooth trace transmitted turning pairs valve velocity diagram velocity ratio vertical whilst worm wheel
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