3 Basic Motion Types in a CNC Machine
All of these motion types may seem different but they share two things in common, which would be that they are all modal and the endpoint of each motion is specified in motion command. By being modal it means that the motion type would be in effect until changed otherwise.
3 common motion types:
1.)Rapid Motion Type
Rapid motion type is also called Positioning. The way this motion type is used is through utilizing the fastest rate possible of the command motion of the machine. Example uses of rapid motion are moving to clear obstructions, placing cutting tools to and from the desired position, and any program that provides non-cutting in their schemes.
The command that is usually programmed to a CNC machine is G00 because in this command, the end point for the rapid motion would be specified.
The CNC machine, with most controls given, will be able to move as fast as possible in all commanded axes. In the case of rapid motion, one axis may be able to reach its end point before other axes. Straight line movement will not occur with type of rapid command function and the programmer of the machine must take into account that there are no obstructions to avoid. Straight line motion will happen even during rapid motion commands when done with other controls.
2.)Straight Line Motion
This type of motion would allow the programmer of the machine to command perfectly straight line movements within the machine. Unlike the rapid motion type, the straight line motion would allow the programmer to vary the rate of the motion or feed rate to be used during the movement. Examples of using straight line motion would be turning a straight diameter, taper, when milling straight surfaces, and when drilling for this is because these examples require straight cutting movement.
The common word to specify a straight line motion into a machine would be G01, for within this command the programmer will include the preferred end point within each of the axes.
3.)Circular Motion
This motion type would cause the machine to move in the direction of a circular path and is used to generate the radii in machining. When talking about points on circular motion feed rate, it is equal to that of straight line motion.
Other than that of straight line motion and rapid motion, there are two G codes that are commonly used when programming a circular motion into a machine. These are G02 and G03. G02 is used when the programmer desires a clockwise motion into the machine while G03 is used to make an anti-clockwise motion. To know which of the commands to use, the programmer must view the movement with the same perspective as to what the motion of the machine will be, may it be clockwise or anti-clockwise.
Another requirement that would be programmed into a machine that would be using circular motion is that the programmer must specify the radius of the arc that is to be generated. With brand new technological advances in CNC, an “R” word is now used to specify the radius.
For older controls in CNC machinery, an “I”, “J”, and “K” are used to specify location of the center point of the arc.
Comments
Menu
My Articles
Weighing Technology's Offers: The Pros And Cons Of A CNC JobUnderstanding CNC
What It Takes To Be A CNC Operator
Programming 101: CNC
In Depth Discussion In Planning CNC Programs
Programming CNC Machines With G-Codes
Data Transfer Methods Of CNC
CAM: A Vital Component Of CNC
The Different CNC Machines
The CNC Family
How To Effectively Consider CNC
People You Will Need When You Already Have A CNC Machine
CNC Programming Tips The Professional Way
Practical Applications Of CNC
Pad Printing With CNC
Meet Your "Other" Employees: The Basic Parts Of A CNC Machine
Industries That Constantly Define CNC Precision
Pros And Cons In Sheet Metal Manipulation With CNC
Motion Control - The Heart Of CNC
How CNC Helps Companies
When To Shove People Out To Make Way For CNC
Cycle Time Reduction Principles For CNC Machining Equipment
My Bestfriend's Name Is CNC: A Company’s Perspective
CNC Machine Setup And Operation
Related Sites | My Articles The CNC Family You might have not heard of the CNC before, or what it does.. CNC Programming Tips The Professional Way When a program is completed and sent to the Computer Numerical Control.. People You Will Need When You Already Have A CNC Machine If you think that you will just sit back and relax when.. Practical Applications Of CNC Manufacturing anything that requires exact measurements requires cutting.. |
|
|
Related News:
|