Accudyne Products introduces its Expanded Capacity bar puller for CNC lathe automation. The new EZ-Puller Expanded Capacity supports larger round bar diameters of .093" to 2.00" and weighs of up to 100lbs. Hex bar capacity of .250" to 1.375", and square bar capacity of .250" to 1.000" are pulled without an M19 (spindle orientation) function.

The EZ-Puller is an auto-adjusting bar puller that enables automatic operation of CNC lathes. The auto adjust feature is driven by an "X" value in the pulling subroutine of a lathe program. This value represents the distance the tool needs to move in the X-axis according to the bar diameter being pulled.

The patented design of the EZ-Puller uses a cam and lifter system. Hardened steel grippers are attached to hardened steel pivot arms. These arms have an integral cam lobe machined at the top of the arm. As the grippers advance over the bar stock, internal urethane springs are compressed. The urethane springs provide a reactive force that allows the grippers to securely hold the bar stock. This unique design provides optimal gripping force regardless of bar size or shape.

Other features of the EZ-Puller are that it will accommodate an infinite range of sizes within its capacity without mechanical adjustment, allowing for multiple pulls. Multiple pulls are used for longer parts that cannot be cost-effectively machined in one chucking. The design of the EZ-Puller also allows for pulling bars with minimal projection in front of the work-holding chuck. This characteristic allows the machinist to set-up with as little as two gripper serrations (.120") of engagement which makes for a more rigid setup.