Dungarvan Precision Engineering have expertise in cutting a variety of gear types including spur, helical and sprockets, while cutting of internal and external splines, covering all standard D.I.N. Specifications, can be completed on-site.
Gear cutting is any machining process for creating a gear. The most common gear-cutting processes include hobbing, broaching, milling, and grinding. Such cutting operations may occur either after or instead of forming processes such as forging, extruding, investment casting, or sand casting.
Gears are commonly made from metal, plastic, and wood. Although gear cutting is a substantial industry, many metal and plastic gears are made without cutting, by processes such as die casting or injection molding. Some metal gears made with powder metallurgy require subsequent machining, whereas others are complete after sintering. Likewise, metal or plastic gears made with additive manufacturing may or may not require finishing by cutting, depending on application.
Splines are used in mechanical rotating drive systems. Any device that transfers rotary motion from an input shaft to an output shaft most likely uses splines of one form or another.
A splined shaft is one that has equally spaced teeth around the circumference parallel to the shaft’s axis of rotation. These teeth can be straight sided, serrations or involute form. The externally splined shaft mates with an internal spline that has slots, or spaces of a mating form to the shaft’s teeth. The rotation of the splined shaft is transferred to the internally splined member, such as a gear or other rotary device. The spline connection provides an equally distributed load along the sides of the teeth. This shared load provides a longer fatigue life verses a keyway drive.