Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem
Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem
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In our eReader you can find the full English version of the book. Read Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem
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Since this sliding causes friction it is desirable to reduce it to a minimum. Decreasing the length of teeth lessens the angle of action and the length of the path of contact, and therefore reduces the sliding. For con- tinuous action, one pair of teeth must come into contact before the preceding pair quits contact ; therefore, the angle of action cannot be less than the angle subtended by the pitch arc; or the arc of action aPa' (or bPb') must at least equal the dis- tance between similar poin...ts (on the pitch line) of two adjacent teeth of either wheel. This condition fixes the minimum length of the teeth. If the given pitch of the two wheels (Fig. Ill) is aa r W, this determines the minimum arc of action. This arc may be distributed in any way between the approach and recess arcs, though these are commonly nearly equal. Lay off Pa = Pb = Pg, and Pa' = Pb' = Pg r equal to the desired arcs of approach and recess, respectively; then g and g' are the extreme points in the faces of B and A, respectively ; or circles drawn with the radii O'g and Og' are the boundaries of the teeth of the two wheels.
What to read after Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem?
You can find similar books in the "Read Also" column, or choose other free books by John Henry Barr to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Since this sliding causes friction it is desirable to reduce it to a minimum. Decreasing the length of teeth lessens the angle of action and the length of the path of contact, and therefore reduces the sliding. For con- tinuous action, one pair of teeth must come into contact before the preceding pair quits contact ; therefore, the angle of action cannot be less than the angle subtended by the pitch arc; or the arc of action aPa' (or bPb') must at least equal the dis- tance between similar poin...ts (on the pitch line) of two adjacent teeth of either wheel. This condition fixes the minimum length of the teeth. If the given pitch of the two wheels (Fig. Ill) is aa r W, this determines the minimum arc of action. This arc may be distributed in any way between the approach and recess arcs, though these are commonly nearly equal. Lay off Pa = Pb = Pg, and Pa' = Pb' = Pg r equal to the desired arcs of approach and recess, respectively; then g and g' are the extreme points in the faces of B and A, respectively ; or circles drawn with the radii O'g and Og' are the boundaries of the teeth of the two wheels.
What to read after Kinematics of Machinery a Brief Treatise On Constrained Motions of Machine Elem?
You can find similar books in the "Read Also" column, or choose other free books by John Henry Barr to read onlineMoreLess
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