ASME B5.60b-2009 pdf download
ASME B5.60b-2009 pdf download.WORKHOLDING CHUCKS: JAW TYPE CHUCKS.
1 INTRODUCTION This American National Standard establishes techni- cal requirements for workholding chucks used primarily in turning operations. It covers jaw type chucks whether manual or power operated. 2 SCOPE This Part of the ASME B5.60 Standard covers the interface of two-piece chuck jaws. 3 DEFINITIONS OF TERMS fasteners: accessory devices (usually threaded) that are used to secure the top jaw onto the master jaw (see Fig. 1). groove (slot): a recessed geometric form that receives a tongue, key, or jaw nut for positioning the top jaw with the master jaw. hard top jaw: a top jaw that is made to its final size of hardenable steel. It is not intended to be machined in use. jaw interface: geometric forms with fastening ele- ments that position and secure top jaws to master jaws (see Fig. 2). 4.2 jaw nut: the fastener used in the master jaw for securing and, in some designs, positioning the top jaw with the master jaw. jaw-nut slot: a T-slot in the master jaw for receiving a jaw nut. master jaw (base jaw): radial-moving part within the chuck body to which the top jaw is mounted. master jaw pins: precision pins that position the top jaw with the master jaw. master key: a serrated positioning key, secured in the top jaw. monoblock (solid style jaw): a one-piece combination master and top jaw. serration: a repetitive geometric form for radial posi- tioning the top jaw with the master jaw. soft top jaw (blank jaw): a top jaw that is not heat- treated and is formed prior to usage. tongue: the projected geometric form that aligns the top jaw with the master jaw. top jaw: component that clamps the workpiece and is mounted on a master jaw. 4 CHUCK JAW INTERFACE TYPES See Table 1 for top jaw features.
