| Class Vocabulary | |
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CANCEL
| A key on the Haas control that backspaces the cursor to delete the last character entered, and cancels any program block that is highlighted during a block edit. |
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C-axis
| A rotational axis that controls the rotation of the spindle for precise positioning of the workpiece. A C-axis is often required to effectively use live tooling. |
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cutter compensation
| The use of G codes and radius offsets to compensate for the rounded tips of cutting inserts. If cutter compensation is used, the programmer creates a toolpath that follows the exact features of the part. |
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G41
| A G code used with cutter compensation to shift the tool left of the direction of tool travel. |
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G42
| A G code used with cutter compensation to shift the tool right of the direction of tool travel. |
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HANDLE
| Part of the Haas control panel that moves machine components along the axes. The handle clicks in controlled, measured increments that an operator selects on the keypad. |
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HOME
| A cursor key that moves a program quickly to its beginning or to the top of most displays. |
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homing
| The process of sending the lathe's turret to its machine zero position. |
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inner diameter
| An interior surface of a cylindrical workpiece or round hole. |
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input buffer
| A temporary location on a computer that holds all incoming information before it continues to the control for processing. |
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job sheet
| A document that includes all manufacturing specifications for a lot of parts. |
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lot
| The number of similar parts made with a particular tooling setup. |
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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. |
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offset
| A numerical value stored in the CNC control that repositions machine components. Offsets are used to adjust for differences in tool geometry, part size, tool wear, etc. |
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OFSET
| The display key on the Haas control that shows the various programmed offsets. |
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outer diameter
| The exterior surface of a cylindrical or spherical workpiece. |
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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. |
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programmable tailstock
| A tailstock opposite the spindle that can be programmed to travel toward and away from the workpiece. |
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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. |
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STOP
| An override key on the Haas control that stops the spindle. |
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stylus
| The precision tip on the tool pre-setter that electronically records the turret position once a tool tip contacts its surface. |
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sub spindle
| A secondary spindle opposite the main spindle that can be programmed to clamp a workpiece on its exposed end for additional machining on its back side. |
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taper offset
| An offset used on the lathe that compensates for workpiece deflection. Each inch along the workpiece increases the compensation amount. |
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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. |
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tolerance
| An unwanted but acceptable deviation from a given dimension. Tolerances indicate the allowable difference between a physical feature and its intended design. |
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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. |
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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. |
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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 surfaces on the probe, which instantly records the turret position in the offset screen. |
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wear offset
| An offset used on the lathe that slightly adjusts tool location to account for wear, deflection, and other variables that arise during machining. |
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work offset
| An offset used to adjust the location of every tool loaded in the turret. On the lathe, the work offset changes the position of the turret in both the X- and Z-axis. |
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WRITE/ENTER
| A key on the Haas control that acts as a general enter key. |
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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. |
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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. |