Introduction to Manufacturing

Learn turning on a lathe, a metal-removal process where a single-point tool cuts to depth as the work spins at rpm from original to final diameter.

Explore a turning problem on a lathe, using material removal rate, rpm, and diameter reduction from 80 mm to 60 mm to compute turning time in seconds.

Explore punching and blanking with a die and punch, calculating diameters, clearance, and blanking force.

Explores a punching or blanking example in sheet metal manufacturing, using the force formula F = S t C with shear strength, thickness, and perimeter.

Learners explore milling as a machining operation removing metal from a surface with a rotating cutter. It contrasts peripheral and face milling and outlines formulas for rpm, feed, and time.

Compute the face milling time for a six-tooth cutter with 8 mm radius at 50 m/min. Use a 0.2 mm/tooth chip load to yield 71,620 mm/min feed and 5.53 seconds.

Explore holding and drawing forces in cup formation, detailing punch diameter and inside diameter, blank holder distance, stock thickness, and material properties used to calculate forces.

Calculate holding force and drawing force in a joint operation forming a cylindrical stock, using inside diameter 20 mm, thickness 1 mm, and tensile strength 50 megapascals.

Determine the holding force by applying yield strength and die-punch geometry, and compute the resulting force in newtons to secure the stock.

Learn to test design feasibility using three ratios: drilling ratio ≤ 2, reduction ratio < 0.5, and thickness-to-diameter ratio > 0.01. If any fails, the design is not feasible.

Assess design feasibility by evaluating three ratios—join ratio, drawing ratio, and thickness-to-diameter ratio—and conclude feasibility when all tests are met.

Learn drilling basics and apply formulas to compute rotational speed, feed rate, and material removal rate for blind and through holes using drill diameter, stock thickness, depth, and point angle.

Identify the drilling problem, apply the correct formula, and compute the material removal rate for three 7 mm holes using proper unit conversions and feed rate from rpm.

Explore bending calculations for bending and edge bending, including neutral axis angles A and A′, bending allowance, bend radius, stock thickness, and bending force formulas.

Compute bending force and bend allowance for a 6 mm plate in edge bending, using 300 mm width, 400 mm height, 360 MPa tensile strength, and 150 degrees interior angle.

Centrifugal casting uses a spinning drum to form cylindrical metal and applies centrifugal force, mass, velocity, and radius, comparing to gravity with the g factor.

Demonstrates a centrifugal casting example by calculating rotational speed to produce steel tube sections, using inner diameter of the mold, inner radius, g factor, and unit conversions.

Learn to calculate production cycle time, determine cutting speeds for max production, and minimize cost per piece using handling time, tool change time, and tool life costs.

Calculate the production cycle time per piece by adding port handling time, turning time, and tool-change time, then determine tool life for maximum production.

Learn to use a tolerance table with ISO standards to determine hole and shaft tolerances. Convert table values to millimeters and read maximum and minimum tolerances for a given shaft.