tool die design metal stamping


Tool & Die Making
Bend Radius
Deep Drawn
Fine Blanking
Progression strip layout

Slug pulling prevention
Tool die Design
Tool die design book

Jig and Fixture
Jigs and Fixture Design

Materials treatment
Annealing metal
Case hardening
Electrical Conductivity
heat treatment process
heat treating steel

Thermal Expansion

Alu comparison table
Aluminum Tempering
Carbon Steel
Copper alloy
Low alloys
Material nations & Equivalents
Nickel alloys

Stainless Steel

Stainless Steel comparison table
Tool Steel equivalent
Tungsten Carbide
Wrought stainless Steel

Conversion Charts
Drill Angle
Drill size
Energy Efficiency
Math Area
Machining Cutting Time
Technical articles
Work Done

Geometric Tolerancing
Tolerance chart ISO
Surface Roughness
Surface Texture

Quality Control
Process Capability CPK
Sampling plan
Level I, II, III

Engineering Plastic
Machining of plastic
Selection of plastic


Energy Efficiency

While transmitting power or changing energy from one form to another,part of the power or energy is lost due to friction, radiation, etc. Hence, the out put is always lesser than the input. As such, energy efficiency is measured as ;-

Efficiency = out put of work / input of work

Example : 100 Revolutions of the handle are required to raise a load of 1000 kgf to a height of 5 m. Calculate the efficiency.

energy efficency

Output work = G x h = 1000 kgf x 5 m = 5000 kgfm
Input work = F x S = 20kgf x pi x 1m x 100 = 6280 kgfm
Efficiency = 5000/6280 = 0.8 = 80%