Comparison of Conventional, Coherent-jet and High-pressure Coolant Delivery Systems for Profile Grinding
نویسندگان
چکیده
In this work, conventional (non-coherent), coherent-jet, and high pressure coolant delivery systems are compared for profile creep-feed grinding, under non-continuous dressing conditions. To facilitate this comparison, an analytical method of determining the available flow (coolant that hits the wheel or workpiece) was presented. The coolant delivery systems were compared for five different feed rates. At each feed rate the form error was measured using a coordinate measuring machine at five cross sections along the workpiece. The high-pressure coolant delivery system had the lowest form error and had an available flow of only 1.7 Llmin. The non-coherent jet had the second best form error and had an available flow of 17 Llmin. The coherent jet had the highest form error with an available flow of 39 Llmin. COMPARAISON ENTRE DES SYSTEMES DE REFROIDISSEMENT PAR JET CONVENTIONNEL, COHERENT ET DE HAUTE PRESSOIN POUR LA RECTIFICATION PAR MEULE DE FORME RESUME Dans ce travail, des systemes de refroidissement conventionnels (par jet non coherent), par jet coherent et par haute pression utilises lors de la rectification par meule de forme sont compares sous des conditions de dressage non continues. Pour faciliter la comparaison, une methode analytique permettant de determiner Ie debit reel (la quantite de liquide refroidissent impactant la roue ou la piece de fabrication) est presentee. Les systemes de refroidissement sont compares pour cinq vitesses d'avance differentes. Pour chaque vitesse d'avance, Ie defaut de profil a ete mesure en utilisant une machine de mesure coordonnee sur cinq sections Ie long de la piece de fabrication. Le systeme de refroidissement ahaute pression presente Ie defaut de profil Ie plus bas et un debit reel de seulement 1.7 Llmin. Le jet non coherent se classe second pour Ie defaut de profil avec un debit reel de 17 L/min. Le jet coherent a Ie defaut de profille plus e1eve avec un debit reel de 39 L/min. Transactions ofthe CSME Ide la SCGM Vol. 32, No.1, 2008 107
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