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What is the definition of part program?

A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.

Learn more about part program in the class "CNC Manual Operations 200" below.

CNC Manual Operations 200

CNC Department

Class Information

Tooling U classes are offered at the beginner, intermediate, and advanced levels.
The typical class consists of 12 to 25 lessons and typically requires at least two hours of instruction time.

Class Name	CNC Manual Operations 200
Description	This class describes the control features that allow a CNC operator to execute tasks manually. Includes an Interactive Lab.
Prerequisites	300110 300140
Difficulty	Intermediate
Number of Lessons	15

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Class Outline

Class Objectives

Objectives

The Role of the Operator

Operator Responsibilities

The Machine and Control Panel

Machine Controls and CRT

Basic CNC Controls

Manual Control Modes

Manual Control Comparisons

CNC Operational Modes

MDI and Single Block Mode

Types of Override

Uses of Overrides

Optional Stop and Block Delete

Proving Out and Dry Running

Summary

Describe the role of the operator.

Describe the responsibilities of the operator.

Distinguish between machine and control panel functions.

Describe the function of the CRT.

Describe the function of the basic CNC controls.

Describe the manual control modes.

Distinguish between handle and jog modes.

Identify the operational modes.

Describe the function of MDI mode.

Describe the function of single block mode.

Identify the types of overrides.

Describe the use of overrides.

Describe the role of the operator in optional stop.

Describe the role of the operator in block delete.

Describe proving out.

Class Vocabulary

Term	Definition
block delete	A machine control that provides the option of skipping a predetermined series of program blocks. Block delete allows the operator to run two versions of the same program.
control panel	The group of controls on a CNC machine that run, store, and edit the commands of a part program and other coordinate information.
CRT	Cathode ray tube. The CRT is the main screen of the machine that displays important information for the operator.
cycle start	The control used to begin a program or continue a program that has been previously stopped.
cycle stop	The control used to pause a program. Cycle stop pauses tool feed but does not stop spindle movement.
dry running	Performing a trial run of the part program without any parts or cutting fluids to check the program.
edit mode	The mode that allows an operator to make changes to a part program and store those changes.
emergency stop	The control that automatically shuts down all machine functions.
feedrate override	An override that allows the operator to adjust the feed rate of the tool during operation. The override functions as a percentage of the programmed value.
handle mode	The mode that allows for the manual operation of tool movement via the handwheel. Some machines may have a combined handle/jog mode.
jog mode	The mode that allows for the manual operation of tool movement via the jog buttons. Some machines may have a combined handle/jog mode.
machine panel	The group of controls on a CNC machine that directly guides tool movement and the operation of machine components.
machine zero	The position located at the farthest possible distance in a positive direction along the X-, Y-, and Z-axes. This position is permanently set for each particular CNC machine.
manual data input mode	The mode that allows an operator to manually enter and execute blocks of programming code at the control panel.
memory mode	The mode that allows an operator to call up and execute a part program stored in the machine.
micrometer	A hand-held measuring device used to inspect the dimensions of parts. The typical micrometer is accurate within 0.001 in. or 0.02 mm.
mode	A machine state that determines the way it executes manual and automatic commands.
optional stop	A code that pauses the program if the appropriate switch is selected on the machine. Optional stops allow the operator to inspect the machine between operations.
override	A control that adjusts a programmed speed or feed rate by a certain percentage during operation.
part program	A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.
part programmer	The person responsible for the creation of a part program. The part programmer translates the workpiece design into program instructions for the CNC machine.
proving out	Running a program one block at a time in order to check for accuracy and proper tool setup.
rapid feedrate override	An override that allows the operator to reduce the rate of rapid tool movement during operation. A rapid override may be 25% of the original rate or less.
rapid mode	The mode that allows for the manual movement of machine components at high rates of travel.
single block mode	The mode that allows an operator to execute a part program one block at a time. The operator must push the cycle start button to execute each block.
soft key	A panel key that can execute a variety of different commands. The purpose of the key depends upon the current display on the CRT.
spindle speed override	An override that allows the operator to adjust the speed of the spindle during operation. The override functions as a percentage of the programmed value.
tolerance	The unwanted but acceptable deviation from a desired dimension.
tool offset	A stored value that compensates for variations in tool length. Each tool requires an offset, which is measured from the turret or spindle position.
zero return	The control that automatically locates the turret or spindle in the machine zero position.

What is the definition of part program?

A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.Learn more about part program in the class "CNC Manual Operations 200" below.

CNC Manual Operations 200

CNC Department

A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.

Learn more about part program in the class "CNC Manual Operations 200" below.