Authors: Claude Gosselin and Qimi Jiang, Laval University, Kevin Jenski and Jack Masseth,<\/p>\n
American Axle and Manufacturing<\/p>\n
Because of the large volume ofmanufactured sets, hypoid gears are usually hard finishedafter heat treatment<\/p>\n
using the lapping process. In the lapping process, a gear set is run at varying operating positions and under a<\/p>\n
light load in order to lap the tooth surface. An abrasive lapping compound is used as ametal removal media.<\/p>\n
Because of the rolling and slidingmotion inherent to hypoid gears, the lapping compound abrades and refines<\/p>\n
the tooth surface to achieve smoothness in rolling action and produce high quality gear sets. The pinions and<\/p>\n
gears are lapped in pairs and must therefore remain as coordinated pairs for the rest of their lives.<\/p>\n
However, heat treatment distortion can vary significantly from batch to batch, and even within one batch if the<\/p>\n
temperature is not consistent throughout the heat treatment furnace. Thus, developing alapping sequencefor<\/p>\n
manufacturing requires both time and experienced technicians who can establish lapping operating positions<\/p>\n
and sequence times to produce quality gear sets both in terms of performance and cost. This development is<\/p>\n
generally trial and error as past operator experiences factor heavily into the process.<\/p>\n
In this paper, the lapping process is simulated using advanced modelling tools such as gear vectorial<\/p>\n
simulation for the tooth surfaces and path of contact and reverse engineering to analyze the tooth contact<\/p>\n
pattern of existing gear sets under load (static LTCA). Test gear sets are measured using a CMM prior to a<\/p>\n
special lapping cycle where the position of the gear sets on the lapper does not change, and then<\/p>\n
re–measured after lapping in order to establish how much, and where, material was removed. A wear<\/p>\n
constant named "wear coefficient" specific to the lapping compound composition is then calculated.<\/p>\n
Based on the obtained wear coefficient value, an algorithm for simulating the lapping process is presented.<\/p>\n
Gear sets lapped on the production line at American Axle and Manufacturing are used for simulation case<\/p>\n
studies. Results show that it is possible to predict how much and wherematerial will be removed on the tooth<\/p>\n
surface, thereby opening the door to better understanding of the lapping process.<\/p>\n","protected":false},"excerpt":{"rendered":"
Hypoid Gear Lapping Wear Coefficient and Simulation<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n AGMA<\/b><\/a><\/td>\n 2005<\/td>\n 18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":485821,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2659],"product_tag":[],"class_list":{"0":"post-485813","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-agma","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/485813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/485821"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=485813"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=485813"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=485813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}