Accudyne Corp. is introducing the EZ-PULLER. This self-adjusting bar puller is used in CNC turning centers to provide automatic operation of the machine.
The design of the EZ-PULLER allows the programmer or setup person to change bar sizes in the machine without having to manually adjust the tool. The tool functions by means of polyurethane springs that provide force to pivoting arms. These arms in turn apply force to circular grippers at the end of the arms. The grippers rotate only under extreme load and have a unique serration geometry that is said to generate minimal stock penetration while providing maximum grip for a more accurate pull.
To set the tool for gripping and pulling bar stock, the" tool is moved in the "Z" axis until the grippers are at least .180" past the end of the stock, then moved in the "X" axis until the grippers are on centerline with the material being pulled. A standard pull cycle is then initiated.
The EZ-PULLER can accommodate the following bar stock sizes:
Round Stock .125" to 1.625"
Hexagonal Stock .125" to 1.375"
Square Stock .125" to 1.000"
Related Glossary Terms
- centers
centers
Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.
- computer numerical control ( CNC)
computer numerical control ( CNC)
Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.
- turning
turning
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.
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