2012 Catalog

INTERNAL ROTARY BROACHING

Simply stated, this is the process of forming an internal shape into an undersized pre-drilled hole. Generally used on blind hole applications where the length of the form does not ex- ceed three times the diameter of the form. Can also be used on through hole applications.

BROACHING

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Used on all types of machines to produce hundreds of items like cap screws, faucet splines, involute gears, knurls and medical bone screws to name just a few.

Proudly made in the U.S.A.

THESE ARE EXAMPLES OF SPECIAL SHAPES THAT HAVE BEEN SUCCESSFULLY BROACHED - LET US QUOTE ON YOUR REQUIREMENTS.

DOUBLE HEX FLAT DOUBLE D STRAIGHT SPLINE MULTI KEYWAY KNURL

KEYWAY INVOLUTE SPLINE

PLEASE INCLUDE THE FOLLOWING INFORMATION WITH YOUR SPECIAL BROACH INQUIRY:

INTERNAL OR EXTERNAL H/S/S BROACH?

TOLERANCE IF NOT SHOWN ON PRINT

IS H/S/S BROACH TO BE USED IN A SOMMA HOLDER? IF NOT, WHAT ARE THE BLANK DIM. FOR YOUR

SHAPE OF H/S/S BROACH FORM CLEARING ID ON INTERNAL? EXTERNAL CLEARING ON OD?

MATERIAL GRADE OF PART

ARE ANY INTERNAL RADII LESS THAN .0055 ON INT. BROACHES? ARE ANY EXTERNAL RADII LESS THAN .0055 ON EXT. BROACHES?

HOLDER & ° OF SPINDLE TILT?

WHAT IS HOLDER SIZE OR SHANK DIA?

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SPECIAL BROACHES.xls

SWISS

CNC

MULTI- SPINDLE

BROWN & SHARPE

DAVENPORT