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1. Part Programming for Drilling
Machine Operation
By:
P.PRASANTH (211231101608)
3rd year, Robotics and Automation

2. Part Programming for Drilling Machine
Operation:
 Part programming for drilling machine operation involves
creating a set of instructions that guide the drilling machine
to perform specific drilling operations on a work piece.
 These instructions are written in a programming language
that the machine can understand and execute.
 The programming language used for drilling machine
operations is typically G-code, which is a standardized
language used in computer numerical control(CNC)
machines.

3. steps involved in part programming for drilling
machine operation:
 Work piece design
 Coordinate system
 Tool selection
 Writing the program
 Program structure
 Simulation and verification
 Execution

4. 1. Work piece design:
 Before writing the part program, it is essential to have a clear understanding of the work piece design
and the specific drilling operations required.
 This includes knowing the hole locations, dimensions, depths, any other relevant specifications.
2. Coordinate system:
 The drilling machine operates with in a coordinate system that establishes the reference points for
the drilling operations.
 The most common coordinate system used in Cartesian coordinates (x,y,and z axes).
 The origin point (0,0,0) is typically defined as the starting position of the machine.
3. Tool selection:
 Choose the appropriate drill bit or tool for the drilling operation based on the workpiece
requirements.
 Consider factors such as hole size, material type, and drilling speed.

5. 4. Writing the program:
 The G-code program is written using a text editor or specialized software.
 The program consists of a series of commands that specify the machine movements, tool changes,
feed rates, and other parameters.
 Here are some common g-code commands used in drilling operations:
• Rapid move (G0/G00)
 Moves the machine rapidly to a specified position without cutting or drilling.
 It is used for positioning the machine at the start or end points of the drilling operations.
• Linear interpolation (G1/G01)
 Performs a straight-line movement from the current position to a specified point.
 This command is used for actual drilling, where the tool penetrates the workpiece to
create a hole.

6. • Spindle speed (S)
 Sets the rotational speed of the drilling machine’s spindle, which determines the drilling
speed.
 It is specified in revolutions per minute (RPM)
• Feed rate (F)
 Determines the rate at which the tool moves along the work piece during drilling.
 It is specified in units per minute (mm/min or inches per minute)
• Coolant control (M08/M09)
 Control the coolant system to provide lubrication and cooling during the drilling operation.
• Tool change (M06)
 Specifies a tool change, allowing the machine to switch to a different drill bit or tool if
multiple drilling operations are required.

7. 5. Program structure:
 A typical part program for drilling operations follows a specific structure.
 It begins with initialization commands that set up the machine parameters, such as spindle speed
and coolant control.
 Next, the program includes positioning commands to move the machine to the desired drilling
locations.
 The drilling operations are then specified using the appropriate G-code commands, such as
linear interpolation for drilling holes.
 Finally, the program ends with termination commands, which may include stopping the spindle or
coolant.
6. Simulation and verification:
 It is crucial to simulate and verify the part program before executing it on the actual drilling machine.
 This helps identify any errors or collisions that may occur during the operation.
 Simulation software or CNC machines simulators can be used to visualize the tool paths and ensure
that the drilling operations will be performed accurately.

8. 7. Execution:
 Once the part program has been verified, it can be loaded on to the drilling machine’s controller.
 The machine will execute the program, following the specified instructions to perform the drilling
operations on the work piece.
 Operators should closely monitor the operation to ensure everything is proceeding as expected.
 By following these steps, part programming for drilling machine operation can be carried out
effectively, enabling precise and efficient drilling operations on work pieces.