From Cutting Data for Turning of Steel


Turning is a machining process for generating external surfaces by the action of a cutting tool on a rotating workpiece, usually in a lathe (Ref 3, p.135). Among various basic operations performed on turning equipment (boring, facing, cutoff, and threading), only straight turning is discussed in this chapter, because this operation is characterized by higher metal removal rate and, subsequently, by higher power consumption. The value of required machining power is the key element for maximizing productivity of cutting.

For almost three decades, the Machining Data Handbook (Ref 1 and Ref 2) has remained a reliable source of technical information on the cutting speed data versus depth of cut, feed rate, cutting tool material, and the workpiece materials.

The speeds and feeds for the various operations presented in Machining Data Handbook were obtained from the many sources and represent a tool life of 30 60 minutes applicable for carbide indexable inserts (Ref 1, p. XV). This handbook provides machining data when turning of steel with HSS, cemented carbide, cermet, and ceramic cutting tools. Unfortunately, machining data for turning of hardened tool steels with polycrystalline cubic boron nitride cutting tools were not included in this handbook.

Machining parameters for turning of steel with coated carbide, cermet, and ceramic cutting tools were adopted from this handbook and analyzed.

The machining recommendations (Ref 1, pp.1.3 1.33; 1.59 1.78) should be considered only as starting cutting parameters that require certain adjustments in accordance with today s metalcutting technology. It means that the final selection of cutting speeds...

Products & Services
Cutting Tool Inserts
Cutting tool inserts are replaceable attachments for cutting tools. They typically contain the actual cutting edge.
Turning Tools
Turning tools are used on lathes for cutting or finishing the outside diameter of a workpiece.
Tool Blanks
Tool blanks are ungrounded rods or inserts for subsequent grinding, geometry, and edge design and fabrication.
Lathes and Turning Centers
Lathes and turning centers cut a rotating part with a stationary cutting tool. The tool moves parallel and perpendicular to the workpiece axis to provide the desired finished shape.
Production Machining
Production machining services providers have the capability to output large production runs using a variety of machining services.

Topics of Interest

Calculating the required power at selected machining parameters is an essential step in managing the productivity of cutting. The calculation is based on the metal removal rate and the Unit Power.

Four different types of drilling tools are used in metalcutting applications: solid HSS (high speed steel) twist drills, solid carbide fluted drills, spade drills with inserted HSS and carbide blades,...

Unit 1: Measurement Fundamentals Table 1-1-1: Comparison of the Decimal and Binary Systems Unit 5: CNC Components Table 3-5-1 Unit 6: CNC Functions Character Purpose Unit 16: Tooling and...

Machining is one of the most important manufacturing processes, which remove unwanted material in the form of chips from a workpiece. Material removal operations are among the most expensive; in the...

OVERVIEW A wide diversity of tools are in fact gathered under the words 'cutting tools', such as turning tools, drills, threading taps and dies, shaping, planing tools, scrappers, shaving tools and...

Product Announcements
WhizCut of Sweden AB
Sandvik Coromant Co.
Wiseman Threading Tools Ltd.