Certified CNC Programmer

Vskills

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                                    Medium of instructions
                                    English

                                    Mode of learning
                                    Self study

                                    Mode of Delivery
                                    Video and Text Based

CNC machine and safety

Need for cnc machines
Example of cnc program
Program body
Header
Program body
End of the program
Conventional machine
Cnc machine
NC machine, cnc
Cnc work – An introduction
Advantages, Disvantages
Cnc machine and its applications
Reference systems
Origins of the reference systems
OMmachine zero
Properties of the function
Axis
Programming
Main planes and axes
Properties of the function
Work plan program by two directions (G20)
Programming
Rotary axes
Linear like rotary axis
Normal rotary axis
Unidirectional rotary axis
Positioning-only rotary axis
CNC Vertical boring machine

Machine zero and reference point programming

Coordinate programming
Cartesian coordinates
Definition of position values
Standard axes (x…C9)
Definition of position values
Polar origin preset
Origin selection
Programming with respect to machine zero
Program a movement referred to machine zero
Machine coordinate system
Considerations for movement referred to machine zero
Zero offsets and coordinate transformations
Tool radius and length compensation
System units; millimeters or inches
Technological functions
Movement without with out programmed feed rate
Variable to limit the feed rate via PLC
Feed rate regulation
Understanding how the CNC calculates the feed rate
Feed rate programming units (G93/94/95)
Programming
Tool number (T)
Load a tool in the spindle
List of “M” function
Program interruption (M00/M01)
Tool change (M06)
M06 Tool change
Constant surface speed
G96 constant surface speed
Constant turning speed
Spindle start and stop
M03/M04 start the spindle clockwise counter clockwise
Stop the spindle
G02 and G03 commands zero offset absolute and incremental co- ordiantes tool call, tool length compensation cutter radius compensation
Tool path control
Programming
In polar coordinates
Circular interpolation
Programming
Cartesian coordinates
Coordinates of the arc’s final point
Arc center coordinates
Cartesian coordinates
Arc radius
Depending on the active work plane, the programming format is
Electronic threading with constant pitch
Programming
Thread pitch
Programming examples for a mill
Multi –entry electronic threading
Longitudinal electronic threading
Multi –entry longitudinal electronic threading Electronic taper threading
Thread blending
Corner chamfering
Programming
Mirror image
Considerations
Additional preparatory functions
Tool compensation
Types of compensation
Tool radius compensation
Tool length compensation
Tool radius compensation
Programming
Subroutines
Types of subroutines
Global subroutines
Local subroutines
Subroutine nesting and parameters
Arithmetic parameters in the subroutines
Location (path) of the global subroutines
Programming format
The programming format
Global parameters
Subroutine execution
The programming format
Call to a global or local subroutine initializing parameters
Modal call to a local or global subroutine

Introduction to pneumatics block diagrams directional, pressure and flow control valve

Pneumatics
Examples of pneumatic systems
Pneumatic tools
Pipe organs
Advantages of pneumatics
Reliability
Storage
Safety
Pneumatic symbols
Pneumatic block diagrams
Layout of the system
Front panel
Dimensions
Sensor inputs
Valves
Serial port
Reset button
Power input
MCU
Gas
Tank
Regulators
Buffer tank
Pneumatic hoses and fittings
Valves
The actuator
Theories behind compressed air technology
Directional control valves
Classification
Poppet
Rotary spool
Sliding spool
Modeling of directional valve
Applications of DCV
Pressure control pressure control valve

Principal of Hydraulics Definition of Force, Pressure,

Flow Pascal’s Low Hydraulic Pumps, Motors And Intensifiers
Hydraulics
Basic hydraulic principles
Hydraulic pressure and Force
Flow rate
Introduction
Basic symbols
Valve operators
Energy conversion devices
Fluid cylinders
System pressurization
Hydraulic intensifiers
Nomenclature
Reciprocating intensifiers
Types of hydraulic fluids
Petroleum-based fluids
Synthetic fire-resistant fluids
Phosphate ester fire-resistant fluids
Silicone synthetic fire-resistant fluids
Lightweight synthetic fire-resistant fluids
Water-based fire-resistant fluids
Properties of hydraulic fluids
Viscosity
Single-acting cylinder
Double –acting cylinder
Hydraulic pumps
Hydraulic pumps types
Gear pumps
Gerotor pumps
Rotary vane pumps
Screw pumps
Bent axis pumps
Axial piston pumps swash plate principle
Radial piston pumps
Peristaltic pumps
Hydraulic motor
Hydraulic motor types
Gear and vane motors axial
Axial plunger motor
Radial piston motors
Braking
Uses
Direction Control Valve Types Pressure Control Valve Types Flow Control Valve Types
Directional control valve
Types of directional control valve
Poppet-type directional control valves
Spool valve disadvantages
Hydraulic 4-way spool valves
Pressure control
Types
Main types of pressure relief valves include
Definition of “backpressure”
Sequence valves sequence valves basics
A sequence of events
Some precautions
Sequence valves at work
The counterbalance valve
Functioning
Pilot operated pressure relief
Single –acting cylinder circuit with three-port valve
Drawing pneumatic circuits
Double-acting cylinder circuit with five-port valve
Double –acting cylinder and five-port valve

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