Read through a list of common workholding definitions to expand your knowledge of workholding manufacturing terminology. Select the first letter of the word from the list above to jump to appropriate section of the glossary.
The accuracy of a chuck/expanding arbor measured in inches TIR is comprised of two components:
A device that clamps the chuck or expanding arbor through the aid of pneumatic or hydraulic energy. arbor See definition of expanding arbor.
See definition of expanding arbor.
See definition of the workshop.
A workholding device which grips primarily on the outside diameter of a rotational part.
A split sleeve which when expanded or contracted, grips the workpiece.
A workholding device using a collet.
A chuck in which jaw(s) move to or away from the workpiece without altering the position of the workpiece.
A chuck capable of gripping and positioning a crankshaft off-center for turning or grinding operations.
The action of gripping a workpiece without changing its axial position.
A chuck that uses the deformation of a flexible material to grip a workpiece.
A workholding device which grips on an inside diameter or feature.
A chuck A split sleeve which when expanded or contracted, grips the workpiece.
Full indicator reading. Used interchangeably with TIR. TIR is generally preferred.
A device used to locate or support material, workpiece(s), or tool(s) during machining operations. Usually custom designed to hold a specific workpiece.
A diameter on the chuck body designated for measuring runout of a chuck.
A cylindrical or symmetric shaft, sometimes tapered, that locates on the internal diameter (ID) or feature of the workpiece.
The moving part in a chuck to which the top jaw is mounted. top jaw
A chuck/expanding arbor is said to have "pull-back" action if it simultaneously grips and pulls the piece part back against a workstop.
The random component of chuck accuracy measured in inches TIR.
A chuck which grips shafts for turning the complete length by retracting jaws into the chuck face to allow the area previously gripped to be machined. Either a face driver or expanding arbor provides the torque when machining the area previously gripped by chuck jaws.
A piece part symmetrical about a central axis.
A workholding device designed to grip on previously machined surfaces.
A chuck in which all jaws move to or away from the workpiece and maintain on common center.
A Chuck/expanding arbor with an integral pneumatic or hydraulic power cylinder.
Top jaw blank that can be machined to specific dimensions Soft jaws are mounted to the master jaws.
Total indicator reading.
The component that clamps the workpiece and is mounted on the master jaw.