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November 2017

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Double Disc Grinder

The DD-7 double disc grinding machine from Glebar is designed for grinding small diameter components and accurately controls their length and perpendicularity. The DD-7 can be configured in three fixturing modes depending on the application, the shape of the part and the degree of automation required.

In vertical mode, parts are fed through the grinding wheels horizontally using a precision machined steel plate. Holes in the plate encapsulate the part during the grinding operation. High volume carbide drill blanks are processed automatically using this method.

In thrufeed mode, components are fed in a continuous fashion through the machine, allowing for increased throughput. Silicon nitride roller bearings are ground using this method.

The third mode of fixturing employs a precision fixture mounted on a high accuracy slide. Square ceramic blocks can be perpendicularly ground using this mode of operation. "A competing process would be surface grinding parts in batches - a non-continuous, therefore slower, method of manufacturing," said a company spokesperson.

Other applications range from printed circuit board drill blanks, carbide pins, ceramic blocks and roller bearings.

"The small machine footprint is able to out produce much larger double disc grinders when the component to be ground is small in diameter," said the spokesperson. Combining the latest in multi-axis slide controls, the machine can be configured for user application specifically. The interface software can be designed to meet user production requirements encompassing controls for all peripheral attachments such as robots and bowl feeders. In-line inspection can be deployed to automatically adjust size, further improving the machine's accuracy and repeatability.

Key features include:

  • Fast operation
  • Small footprint
  • Simple set-up and control
  • Bowl feeding with warning beacons
  • Robot integration
  • Gauging integration
  • Simple wheel adjustment
  • Automatic wheel dressing
  • Fully customizable.

Specifications include:

  • Average production rates: 5,000 pcs per hour carbide drill blanks
  • Grinding diameter stock: max 0.500" (13 mm) - min 0.031" (0.8 mm)
  • Application dependent
  • Wheel size: two wheels 7" or 10" x 1" (178 or 254 x 25 mm)
  • Work wheel spindle power: 2 x 3 HP.

For more information contact:

Glebar Company

565 E Crescent Avenue

Ramsey, NJ 07446

201-337-1500 / 800-235-5122

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