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What is the definition of HANDLE?

Part of the Haas control panel that moves the machine components along the axes. The handle clicks in controlled, measured increments that an operator selects on the keypad.
Learn more about HANDLE in the class "Haas Lathe: Locating Program Zero 275" below.

Haas Lathe: Locating Program Zero 275

CNC Controls: Haas Training

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:	Haas Lathe: Locating Program Zero 275
Description:	This class describes how to determine work offsets and tool geometry offsets on the Haas lathe during setup. *Includes Haas CNC Simulators.*
Prerequisites:	310265
Difficulty:	Intermediate
Number of Lessons:	14

Below are all the competencies and job programs that contain the class Haas Lathe: Locating Program Zero 275. Job programs are our traditional class lists organized according to common job functions. Competences are our latest job-specific curricula that help tie online learning to practical, hands-on tasks.

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Job Programs
Job: CNC Operator: Lathe Job: CNC Programmer

Class Outline

Objectives
What Is Program Zero?
The Work Coordinate System
Considerations for Selecting Program Zero
Tool Geometry Offset Methods
Determining Tool Geometry Offsets: Off the Machine
Determining Tool Geometry Offsets: On the Machine
Entering Tool Geometry Offsets: Z FACE MESUR and X DIA MESUR
Determining Tool Geometry Offsets: Tool Pre-Setter
Entering Tool Geometry Offsets: Tool Pre-Setter
Determining Work Offsets
Entering Work Offsets
Entering Radius and Tip Offsets
Summary

Class Objectives

Compare program zero to machine zero.
Describe the work coordinate system.
Identify common locations for program zero on the lathe.
Identify common methods for setting tool geometry offsets on the lathe.
Describe how to determine tool geometry offsets for tools off the lathe.
Describe how to determine tool geometry offsets manually on the lathe.
Explain how to use the Haas control to enter tool geometry offsets with the Z FACE MESUR and X DIA MESUR features.
Describe how to determine tool geometry offsets with the tool pre-setter.
Explain how to use the Haas control to enter tool geometry offsets with the tool pre-setter.
Describe how to determine a work offset on the lathe.
Explain how to use the Haas control to enter a work offset using Z FACE MESUR.
Explain how to use the Haas control to enter matching radius and tip offsets.

Class Vocabulary
.0001/.1		A key that sets the HANDLE increment to .0001 inches or .001 mm for each division of the HANDLE.
.01/10.		A key that sets the HANDLE increment to .01 inches or 0.1 mm for each division of the HANDLE.
centerline		An imaginary straight line that runs through the center of a cylindrical part. On the lathe, the centerline is parallel to the Z-axis.
ERASE PROG		A key in the LIST PROG mode key row that clears the last MDI line when in MDI mode.
F2		A function key that, when entering tool geometry offsets on the Haas lathe, inputs the machine's pre-defined centerline offset value.
HANDLE		Part of the Haas control panel that moves the machine components along the axes. The handle clicks in controlled, measured increments that an operator selects on the keypad.
inner diameter		The interior surface of a hole or cylindrical feature.
input buffer		A temporary location on a computer that holds all incoming information before it continues to the CPU for processing.
job sheet		A document that includes all manufacturing specifications for a lot of parts.
machine coordinate system		An unchangeable coordinate system that has machine zero as its origin.
machine zero		The position located at the farthest possible distance in a positive direction along the machine axes. This position is permanently set for each particular CNC machine.
MDI/DNC		An operation mode key that lets an operator either enter and execute program data without disturbing stored data when pressed once, or execute programs from a centrally located computer storage device when pressed twice.
NEXT TOOL		A key on the Haas lathe that is used when setting tool geometry offsets to index the turret to the next sequential tool.
OFSET		The display key on the Haas control that shows the various programmed offsets.
outer diameter		The exterior surface of a cylindrical feature.
part program		A series of instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.
program zero		The position that acts as the origin for the part program of a particular workpiece. This position is unique to each workpiece design, and it is selected by the part programmer.
qualified tooling		Tooling used with the lathe that consists of separate clamping units and cutting heads that are interchangeable. The position of each cutting edge is held to very tight tolerances.
radius offset		An offset used on the lathe that slightly adjusts the tool to compensate for the rounded tip of an insert during contouring, chamfering, and other multi-axis operations.
stylus		The square-shaped tip at the end of the tool pre-setter that records a tool's offset position once the tool contacts one of its four edges.
tip offset		An offset used on the lathe that indicates one of nine possible orientations for a particular tool. Tip offsets are used in conjunction with radius offsets.
tool geometry offset		An offset used on the lathe that accounts for variations in tool length along the X- and Z-axis. Each tool loaded in the turret requires its own geometry offset.
tool nose radius		The rounded tip on the cutting edge of a single-point tool. The greater the nose radius, the greater the degree of roundness at the tip.
tool pre-setter		A device on the lathe used to quickly determine tool geometry offsets on the X- and Z-axis. The tool tip contacts the stylus of the probe, which instantly records the turret position in the offset screen.
TURRET FWD		A key on the Haas lathe that indexes the turret to the next sequential tool.
work coordinate system		A variable coordinate system that has program zero as its origin.
work offset		An offset used to adjust the location of every tool loaded in the turret. On the lathe, the work offset is typically added only for the Z-axis.
WRITE/ENTER		A key on the Haas control that acts as a general enter key.
X DIA MESUR		A key on the Haas lathe that automatically stores the X-axis position as a tool geometry offset for a tool that is properly touched off the workpiece surface. X DIA MESUR prompts the operator for a diameter measurement.
Z FACE MESUR		A key on the Haas lathe that automatically stores the Z-axis position as a tool geometry offset for a tool that is properly touched off the workpiece surface. Z FACE MESUR is also used to set a Z-axis work offset.