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Auto Feed Drills Provide Precision, Versatility, and Dependability



Auto feed drills excel in production drilling applications where accurate, reliability, and versatility are necessary. Their simple yet robust design makes them the premier selection in manufacturing facilities globally.

The auto feed fixtured drill is really a ruggedly constructed self-feed drilling machine made of cast iron and steel. The modular construction of fixtured drilling equipment enables the users to select the components for effective precision drilling of just about every material. In order to precisely match the self-feed drill to its application, you select from a number of design options such as the following: chuck size, horsepower, length of the stroke, and RPM.

The rugged construction of fixtured drills allows them to withstand heavy punishment while providing extra versatility, for example the feature of both foot and nose mountings. Self-feed drills can also be mounted within optional aircraft type nosepieces.

The operation of the self feed drill is as follows. The fixtured drill is started by pushing a manual start button or by the tool receiving a "start" air signal. The fixtured drill motor starts as soon as the forward motion occurs, and it shuts off as soon as the return motion is completed.

When started, the pneumatic fixtured drill fast forwards to the part, then slows to the preset drilling feed rate. When the drill reaches the end of the stroke an internal signal causes the drill to retract and the self-feed drill is switched off.

Feed control is accomplished on the fixture drill by manipulating the flow of air from the exhaust side of the feed piston and is sufficiently accurate for most of the easy to drill applications. When more accurate control of the feed rate is required on harder to drill materials, or when hole finish or breakthrough control is crucial, utilize a hydraulic feed control (shown below).

The auxiliary signal should be considered when a pneumatic signal is needed to indicate that the tool has moved to the specified position. The signal may be used to actuate related equipment, including starting another drill or tapper, or performing an unclamp operation.

Mounting auto feed drills is accomplished by utilizing components from the extensive collection of available clamps, arms, and mounting posts which are generally available from the drill manufacturer as well.

Numerous manufacturers produce auto feed drills, but Desoutter and Ingersoll Rand manufacture two of the most proven lines. If you are unsure of the specific model drill to order, a supplier specializing in drilling such as Lou Zampini and Associates will provide expert selection assistance free of charge.

Call Lou Zampini & Associates at 1-800-353-4676 for more info or click here.