tool design book
 
| Metal stamping| Tool die design book | Tool Design Techniques | Standard & equivalent | Geometric Dimensioning Tolerance | Contact Us |
| Tool & Die Makers forum |
 
 

Fundamental Tool & Die Making techniques


Free Articles
Bend Radius
Deep Drawn
Fine Blanking
Formula
Progression strip layout

Slug pulling prevention
Tool die Design



Downloadable Ebooks

Tool die design booknd Fixture
Strip layout

Jigs and Fixture Design Book



Geometric Tolerances


GDT
ISO tolerance for shafts
ISO tolerance for holes
Surface Roughness
Surface Texture


Quality Control Co

tAQL
Process Capability CPK
Sampling plan
AQL Level I, II, III


E
tool maker froum

Understanding the international engineering language of Geometric Dimensioning & Tolerancing (GDT), GDT symbols is essential for communicating in today's highly competitive global marketplace. This tutorial builds the ability to read and interpret GDT symbols, which provide detail information about the function and relationship of part features such as, dimensioning, tolerance, runout, datum, profile etc.

 

Part I : Introduction to
Dimensioning and tolerancing GDT
Dim

A dimension is a numerical value expressed in an appropriate unit of measure. It is indicated on a drawing along with line, arrow, symbols and notes to define the size and specification of an object.

GDT
(Fig. 1 )

eference dimension

Reference dimension is used only for information purposes. The definition REF shall be indicated immediately under or beside the dimension.
Normally it is either a duplication of a dimension or it is the accumulated value of other dimensions.


geometri tolerance

Tolerance

GDT Tolerance is the allowable variation of a dimension. It is the difference between the maximum and minimum limits. All dimensions except basic, reference, nominal, maximum or minimum shall have a tolerance.
See Fig. 1.

 

Next >> Part II . Maximum & Minimum metal condition

 

 

Mate

Materials & Tretment

Annealing metal
Case hardening
Material density
Electrical Conductivity
heat treating steel

Aluminum


Equivalent and standards

Comparision table

Alu comparison table
Carbide equivalent chart
Carbon Steel
Copper alloy
Low alloys
Nickel alloys
Stainless Steel
Steel comparison table
Tool Steel equivalent
Tungsten Carbide
Wrought stainless Steel
Inch - metri Conversion Charts


Manufacturing

Drill Angle
Drill size


ri


Wise Tool ™ all rights reserved