## Machining Forces and Merchant’s Circle Diagram (MCD) | Mechanics of Machining

Benefit of knowing and purpose of determining cutting forces The aspects of the cutting forces concerned : • Magnitude of the cutting forces and their components • Directions and locations of action of those forces • Pattern of the forces : static and / or dynamic. Knowing or determination of the cutting forces facilitate or are required for : • Estimation of cutting power consumption, which also enables selection of the power source(s) during design of the machine tools • Structural design of the machine – fixture – tool system…

## Use of Chip Breaker in Machining | Mechanics of Machining

Need and purpose of chip-breaking Continuous machining like turning of ductile metals, unlike brittle metals like grey cast iron, produce continuous chips, which leads to their handling and disposal problems. The problems become acute when ductile but strong metals like steels are machined at high cutting velocity for high MRR by flat rake face type carbide or ceramic inserts. The sharp edged hot continuous chip that comes out at very high speed • becomes dangerous to the operator and the other people working in the vicinity • may impair the…

## Orthogonal and Oblique Cutting | Mechanics of Machining

Orthogonal and oblique cutting It is appears from the diagram in Fig. Ideal direction of chip flow in turning that while turning ductile material by a sharp tool, the continuous chip would flow over the tool’s rake surface and in the direction apparently perpendicular to the principal cutting edge, i.e., along orthogonal plane which is normal to the cutting plane containing the principal cutting edge. But practically, the chip may not flow along the orthogonal plane for several factors like presence of inclination angle, λ, etc. Figure: Ideal direction of chip…

## Conversion of tool angles from one system to another: Mechanics of Machining

Purposes of conversion of tool angles from one system to another • To understand the actual tool geometry in any system of choice or convenience from the geometry of a tool expressed in any other systems • To derive the benefits of the various systems of tool designation as and when required • Communication of the same tool geometry between people following different tool designation systems. Methods of conversion of tool angles from one system to another • Analytical (geometrical) method: simple but tedious • Graphical method – Master line…

## Machine Tool Basics – Lathe Workholding

Work holding devices on a lathe As we know the lathe is one of the oldest and highly important machine tool. There is vast number of applications of this machine tool. So for facilitating the easy machining of the work piece it should be held tightly and securely. For this purpose many types of accessories are being used for facilitating easy holding of the work piece. Some of the work holding devices are 1) Carriers and catch plates 2) Face plates 3) Angle plates 4) Mandrels 5) Rests

## Machine Tool Basics – Lathe Cutting Tools

Cut-Off Blade, 1/16″ T-15 High Speed Steel Width: .062″, Height: .218″, Length: 3″ Used on 5106, 5107, and 5130 grooving & cut-off tools \$12.95 Cut-Off Blade, 1/32″ T-15 High Speed Steel Width: .032″, Height: .218″, Length: 3.0″ Used on 5106, 5107, and 5130 grooving & cut-off tools \$12.95 Cut-Off Blade, P1 This blade is size P1. \$7.95 Cut-Off Blade, P1 Carbide Tipped This blade is size P1 Two micro grain carbide tips brazed on \$59.95 Cut-Off Blade, P1 Indexable This blade is size P1 Fits 0XA and AXA cut-off holders…

## Installation Instructions for Taper Attachment on Lathe Machine

As there are innumerable variations in the design and construction of the engine lathes in use today, it is evident that no one accessory can be made to fit them all. So it is with taper attachments. Consequently, only very general instructions can be given, and these may have to be modified somewhat to fit a particular situation. This particular taper attachment is designed primarily for use with a telescoping cross slide screw, but it can be used with the regular non-telescoping type screw, though not without considerable inconvenience. Determine…

## Definition and Classification of Taper Turning

In order to understand taper turning, first you have to understand the general meaning of TAPER. Meaning of Taper A gradual decrease in thickness or width of an elongated object Diminish or reduce in thickness towards one end धीरे धीरे कम हो जाना to become or cause to become narrower towards one end Now you have a general idea what taper is. So, you can better understand the Taper Turning now. Taper Turning When the diameter of a piece changes uniformly, from one end to the other, the job is said…