{"id":2010,"date":"2024-07-31T20:25:19","date_gmt":"2024-07-31T20:25:19","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=2010"},"modified":"2024-07-31T20:26:10","modified_gmt":"2024-07-31T20:26:10","slug":"gear-drive","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/07\/31\/gear-drive\/","title":{"rendered":"\u00a0GEAR DRIVE"},"content":{"rendered":"\n<p id=\"para-158\">All the important gear terminologies are shown in\u00a0Figure 15.14.<\/p>\n\n\n\n<p id=\"para-159\"><strong><em>Pitch Point:<\/em><\/strong>&nbsp;The point of contact between pitch circles of two gears is known as pitch point.<\/p>\n\n\n\n<p id=\"para-160\"><strong><em>Pitch Circle:<\/em><\/strong>&nbsp;The circle passing through point of contacts of two gears is known as pitch circle.<\/p>\n\n\n\n<p id=\"para-161\"><strong><em>Pitch Diameter, D:<\/em><\/strong>&nbsp;Diameter of pitch circle is known as pitch diameter.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page377b.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<p id=\"para-162\"><strong><em>Circular Pitch, P<\/em><sub>c<\/sub><em>:<\/em><\/strong>&nbsp;It is the distance measured along the circumference of the pitch circle from a point on one tooth of the corresponding point on the adjacent tooth.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page377c.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page378.png\" alt=\"Figure 15.14\"\/><\/figure>\n\n\n\n<p id=\"para-163\"><strong>Figure 15.14<\/strong>&nbsp;Nomenclature of Gear<\/p>\n\n\n\n<p id=\"para-164\"><strong><em>Diametral Pitch, P<\/em><sub>d<\/sub><em>:<\/em><\/strong>&nbsp;It is the number of teeth per unit length of the pitch circle diameter.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page378a.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<p id=\"para-165\"><strong><em>Module, m:<\/em><\/strong>&nbsp;It is ratio of pitch diameter to the number of teeth.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page378b.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<p id=\"para-166\"><strong><em>Gear Ratio:<\/em><\/strong>&nbsp;It is the ratio of number of teeth on gear and pinion.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page378c.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<p id=\"para-167\"><strong><em>Velocity Ratio:<\/em><\/strong>&nbsp;It is ratio of angular velocity of the driving gear to driven gear.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page378d.png\" alt=\"Equation\"\/><\/figure>\n\n\n\n<p id=\"para-168\">Here, subscripts 1 and 2 are used for driving and driven gears, respectively.<\/p>\n\n\n\n<p id=\"para-169\"><strong><em>Addendum Circle:<\/em><\/strong>&nbsp;It is a circle passing through the tips of the teeth.<\/p>\n\n\n\n<p id=\"para-170\"><strong><em>Addendum:<\/em><\/strong>&nbsp;It is the radial height of tooth above the pitch circle. Its standard value is one module.<\/p>\n\n\n\n<p id=\"para-171\"><strong><em>Dedendum Circle:<\/em><\/strong>&nbsp;It is a circle passing through roots of the teeth.<\/p>\n\n\n\n<p id=\"para-172\"><strong><em>Dedendum:<\/em><\/strong>&nbsp;It is a radial depth of a tooth below the pitch circle. Its standard value is 1.157 m.<\/p>\n\n\n\n<p id=\"para-173\"><strong><em>Full Depth of Teeth:<\/em><\/strong>&nbsp;It is the total depth of the tooth space, i.e., Full depth = Addendum + Dedendum = (1 + 1.157) \u00d7 Module = 2.157 \u00d7 Module.<\/p>\n\n\n\n<p id=\"para-174\"><strong><em>Working Depth of Teeth:<\/em><\/strong>&nbsp;The maximum depth at which a tooth penetrates into tooth space of the mating gear is known as working depth of teeth.<\/p>\n\n\n\n<p id=\"para-175\"><strong><em>Space Width:<\/em><\/strong>&nbsp;It is the width of the space between two consecutive teeth on pitch circle.<\/p>\n\n\n\n<p id=\"para-176\"><strong><em>Tooth Thickness:<\/em><\/strong>&nbsp;It is thickness of the tooth measured along the pitch circle.<\/p>\n\n\n\n<p id=\"para-177\"><a><\/a><strong><em>Backlash:<\/em><\/strong>&nbsp;It is difference between the space width and the tooth thickness along the pitch circle.<\/p>\n\n\n\n<p id=\"para-178\"><strong><em>Face Width:<\/em><\/strong>&nbsp;It is length of tooth parallel to the gear axis.<\/p>\n\n\n\n<p id=\"para-179\"><strong><em>Top Land:<\/em><\/strong>&nbsp;It is the surface of the top of the tooth.<\/p>\n\n\n\n<p id=\"para-180\"><strong><em>Bottom Land:<\/em><\/strong>&nbsp;The surface of the bottom of the tooth between the adjacent fillets.<\/p>\n\n\n\n<p id=\"para-181\"><strong><em>Face:<\/em><\/strong>&nbsp;It is the tooth surface between the pitch circle and the top land.<\/p>\n\n\n\n<p id=\"para-182\"><strong><em>Flank:<\/em><\/strong>&nbsp;It is the curved portion of the tooth flank at the root circle.<\/p>\n\n\n\n<p id=\"para-183\"><strong><em>Pressure Angle, \u03c6:<\/em><\/strong>&nbsp;The angle between the pressure line and the common tangent at the pitch point is known as the pressure angle or angle of obliquity.<\/p>\n\n\n\n<p id=\"para-184\"><strong><em>Path of Contact or Contact Length:<\/em><\/strong>&nbsp;Locus of the point of contact of teeth of two mating gears from beginning of engagement to end of engagement is known as path of contact or the contact length.<\/p>\n\n\n\n<p id=\"para-185\"><strong><em>Path of Approach:<\/em><\/strong>&nbsp;Portion of the path of contact from the beginning of engagement to the pitch point is known as path of approach.<\/p>\n\n\n\n<p id=\"para-186\"><strong><em>Path of Recess:<\/em><\/strong>&nbsp;Portion of the path of contact from the pitch point to the end of engagement is known as path of recess.<\/p>\n\n\n\n<p id=\"para-187\"><strong><em>Arc of Contact:<\/em><\/strong>&nbsp;Locus of points on the pitch circle from the beginning of engagement to the end of engagement of two mating gears is known as arc of contact.<\/p>\n\n\n\n<p id=\"para-188\"><strong><em>Arc of Approach:<\/em><\/strong>&nbsp;It is the portion of arc of contact from the beginning of engagement to the pitch point of two mating gears is known as arc of contact.<\/p>\n\n\n\n<p id=\"para-189\"><strong><em>Arc of Recess:<\/em><\/strong>&nbsp;It is the portion of arc of contact from the pitch point to the end of engagement of two mating gears is known as arc of recess.<\/p>\n\n\n\n<p id=\"para-190\"><strong><em>Contact Ratio:<\/em><\/strong>&nbsp;It is the ratio of the length of arc of contact to circular pitch.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332524415\/files\/images\/page379.png\" alt=\"Equation\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>All the important gear terminologies are shown in\u00a0Figure 15.14. Pitch Point:&nbsp;The point of contact between pitch circles of two gears is known as pitch point. Pitch Circle:&nbsp;The circle passing through point of contacts of two gears is known as pitch circle. Pitch Diameter, D:&nbsp;Diameter of pitch circle is known as pitch diameter. Circular Pitch, Pc:&nbsp;It [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[347],"tags":[],"class_list":["post-2010","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-power-transmission-devices"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/07\/gear-shift.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=2010"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2010\/revisions"}],"predecessor-version":[{"id":2012,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2010\/revisions\/2012"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/2011"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=2010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=2010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=2010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}