Bar Feeders

Video Shows Bar Puller in Action


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Automation can bring speed and consistency to many different manufacturing operations. When it can be added with relatively minimal expense, the move seems even more compelling.

A bar puller can be added to a CNC lathe or turning center for increased productivity through unattended operation. They are far less expensive than bar feeders and are generally easy to set up and use.

The EZ-Puller from Accudyne Corporation (Englewood, Colo.) is a self-adjusting bar puller that allows the programmer or setup person to change bar sizes in the machine without having to manually adjust the tool arms. These arms, in turn, apply force to circular grippers at the ends of the arms. The grippers rotate only under extreme load and have a serration geometry that generates minimal stock penetration while providing strong grip for accurate pull. The bar puller is designed for round, hex and square stock of various sizes.

To set the tool for gripping and pulling barstock, the tool is moved in the Z axis until the grippers are at least 0.150 inch past the end of the stock. Then they are moved in the X axis until the grippers are on centerline with the material being pulled. A standard pull cycle is then initiated.

Video is available showing the bar puller in operation.


  • Thread Whirling Basics

    The rapidly increasing demand for high-value threaded parts with exceptionally high length-to-diameter ratios has created a lot of interest in thread whirling technology among American shops and manufacturers.

  • Understanding CNC Collet Chucks

    Workholding for turning is usually fairly basic: The selection comes down to chucks or collets. This article looks at when to consider the collet chuck and what kind might be best for a given application.

  • Cutting Tool Coating Production

    This article looks at the coating methods available for carbide cutting tools.