This PPT solve your basic idea about the Absolute and incremental method which use in Computer aided Design and Computer adied manufacturing

1. ABSOLUTE AND INCREMENTAL
METHOD
L. J. POLYTECHNIC, AHMEDABAD
SUBMITTED BY:
1.ANSARI AZHAR 146330319501
2.BHALAKIYA UJJAVAL 146330319503
3.BHARAMBE VAIBHAV 146330319504
4.BHATT JAY 146330319505
5.CHAUHAN JAIMIN 146330319507
Mechanical Engineering Department
COMPUTER AIDED MANUFACTURING (3361901)

2. ABSOLUTE
• It is one type of Cartesian coordinate system.
• Absolute Cartesian coordinates specify a point’s exact
distance from the origin point of the coordinate
system, which is represented as (0,0).
• The absolute X and Y coordinates are signed
numbers.
• In this method we calculate the dimension from the
origin 0.0
• G90 code is use for part programing to select the
absolute method

3. ABSOLUTE METHOD EXAMPLE

4. ABSOLUTE
ADVANTAGES :-
• Easy method of calculate the dimension.
• Identification of error is easy.
DIS-ADVANTAGES :-
• Very lengthy method of doing dimension in part
program .
APPLICATION:-
• To do dimension in CNC machine for making a
required work piece.

5. INCREMENTAL
• Also called relative Cartesian coordinate system.
• Relative Cartesian coordinates specify a point’s exact
distance from the last point that was entered.
• All dimension are not measure in reference from the
origin.
• Incremental coordinates, the last point travelled to
becomes the new reference point on which the operator
bases his next move
• Next point dimension is give reference to the last of end
point.
• G91 code is use for part programing to select the
incremental method

6. INCREMENTAL METHOD EXAMPLE

7. INCREMENTAL
ADVANTAGES :-
• Easy method of calculate the dimension
• Fast method to do given dimension
DIS-ADVANTAGES :-
• Identification of error is complicated
APPLICATION:-
• To do dimension in CNC machine for making a
required work piece.