PowerPoint Template Machining Processes Turning & Hold making Company LOGO Turning and hold making CK14KSTN Nhom5 Contents Tapping Reaming Boring Drilling Reaming Reaming is an operation used to + Mak[.]
Company LOGO Machining Processes Turning & Hold making Contents CK14KSTN-Nhom5 Drilling Boring Reaming Tapping Turning and hold making CK14KSTN-Nhom5 Reaming Reaming is an operation used to: + Make an existing hole dimensionally more accurate than can be achieved by drilling alone + Improve its surface finish Turning and hold making Reamer CK14KSTN-Nhom5 A multiple-cutting-edge tool Straight edges Helically fluted edges Turning and hold making Reamer CK14KSTN-Nhom5 Remove material on the diameter of a drilled hole Soft metal 0.2mm Hard metal 0.13mm remove very little material Turning and hold making Reamer CK14KSTN-Nhom5 The type of reamer Machine reamers Hand reamers Rose reamers Fluted reamers Turning and hold making CK14KSTN-Nhom5 Reamer Hand reamers are straight or have a tapered end in the first third of their length Rose reamers have cutting edges with Wide margins and no relief Fluted reamers have small margins and relief, with a rake angle of about 5° Turning and hold making CK14KSTN-Nhom5 Reamer Besides: Shell reamers generally are used for holes larger than 20 mm Expansion reamers are adjustable for small variations in hole size and also to compensate for wear of the reamer’s cutting edges Adjustable reamers can be set for specific hole diameters and therefore are versatile Turning and hold making CK14KSTN-Nhom5 Reamer Terminology for a helical reamer Turning and hold making CK14KSTN-Nhom5 Reamer Terminology for a helical reamer Turning and hold making Reamer CK14KSTN-Nhom5 Reamers may be held rigidly (as in a chuck) Holder Reamers may float in their holdingfixtures Turning and hold making CK14KSTN-Nhom5 Reamer High-speed steels (Ml, MZ, and M7) materials Solid carbides (K2O; C2) Carbide cutting edges Turning and hold making CK14KSTN-Nhom5 Tapping A tap is a chip-producing threading tool with multiple cutting teeth + Internal and external threads in workpieces can be produced by tapping + Taps generally are available with two, three, or four flutes Tapping & taps Tapping CK14KSTN-Nhom5 The type of tapping Machine tapping Hand tapping Drilling machines Automatic screw machines vertical CNC milling machines Tapping & taps CK14KSTN-Nhom5 Tapping Hand tapping Tapping & taps CK14KSTN-Nhom5 Tapping Machine tapping Tapping & taps CK14KSTN-Nhom5 Tapping Some other type: Tapered taps are designed to reduce the torque required for the tapping of through holes Bottoming taps are for tapping blind holes to their full depth Collapsible taps are used in large-diameter holes Tapping & taps CK14KSTN-Nhom5 Tapping Terminology for a tap CK14KSTN-Nhom5 Tapping Tapping of steel nuts in production Tapping & taps CK14KSTN-Nhom5 Tapping Materials: High-speed steels (Ml, M2, M7 & M10) Productivity in tapping operations can be improved by high-speed tapping Self-reversing tapping systems also have been improved significantly Operating speeds can be as high as 5000 rpm Tapping & taps