Tool & Die Making
Articles
Bend Radius
Deep Drawn
Fine Blanking
Formular
Progression strip layout
Slug pulling prevention
Tool die Design
Tool die design book
Technical Book Store

Jig and Fixture
Jigs and Fixture Design

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

Material
Aluminum
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

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

Geometric Tolerancing
GDT
Tolerance chart ISO
Surface Roughness
Surface Texture

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

Cutting machining time Calculation

Cutting machining time inclusive of setting up the machine, getting the tools, study of drawing. The actual Machining time taken and measuring & checking.

Drilling operation

Machine time = length of tool traveled / Feed rate Machine time ( Known rpm ) L = length of tool travel ( l + 0.3 d ) S = Feed rate Sr = Feed per revolution n = rpm d = Diameter of drill Machine Time = L / Sr x n Machine time - ( rpm unknown ) L = length of tool travel ( l + 0.3 d ) V = cutting speed Sr = Feed per revolution n = rpm d = Diameter of drill V= pi x d x n / 1000 n=Vx1000/Pi x d Machine time = l x pi x d / Sr x v x1000

Milling operation

Machine time = length of tool traveled / Feed rate machine time = L / s