PilotPrecision.com 413-350-5200

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duMONT Minute Man

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Hassay Savage

Keyway Size Ranges 1/8 thru 1/2 inch sizes and 4mm thru 12mm

CNC Single Point Keyway Broaches

Broaching keyways on CNC machines today is as common as turning a part. Eliminate part handling and improve your control Short effective nibbling broaches that take the place of longer tools Quick set up on CNC machines Save time and money with blind hole and thru hole CNC key- way broaching with standard tools that are off the shelf. Single point nibbling cutters that are designed with two separate cutting surfaces at 180 apart. The one piece construction is created on a high speed tooling blank that has common size round shank with 4 ground timing flats to align the keyway for timing to the part it is broaching. These tools will offer long tool life, and can be easily sharpened many times for extended tool life. Ideally designed for either CNC lathe or CNC vertical machining centers. For CNC lathe: mount tool directly into the turret on centerline while a setscrew-locking holder will lock into place and position. For CNC vertical machining center: a collet will hold the tool shank and provide timing orientation. With the spindle locked, the broach can be brought in line with pre-prepared bore diameter and chamfer lead of the part to start broaching the keyway at a speed of 10" - 30" in/min and an in-feed of .003" -.005" depth per pass, using a flood coolant for lubrication during the cut. Once the initial process is achieved, speeds can be increased to 50 - 80 IPM. The in-feeding cycle is repeated until the desired depth of the keyway is achieved. Chips can be removed from the bottom of the hole in a couple of ways: In a blind hole bore , remove the chips by either: prior trepanning the bottom of the keyway area and allow chips to fall away. or pre-drill a hole from the outside to the inside of the part at the bottom of the keyway location. With a thru hole , you can broach right through, but do not disengage with the part, and simply de-burr the keyway upon completion.

The Advantages:

Complete the part on one machine Only way to keyway a blind hole Cut down on set-up time Improve your process Become more flexible with machining Manage small lot production Use cost effective standard tooling No bushing guide required No hydraulic press or pull required

Things That You Should Know:

Standard tooling will come with common shank diameters. Keyway size and length or depth of cut will determine the shank size. Strength and rigidity in the set-up will give you longer tool life. Keyway production will achieve excellent finishes and better accuracy. Specials are available with expedited delivery.

Four timing flats at 90 Two cutting edges at 180

Bore Size

Keyway Width

CNC Single Point Keyway Inch Shank

Keyway Size Tolerance Inches Shank Diameter Overall Length Max. LOC Min. Bore Size EDP No. Hassay Savage

1/8" 0.127 5/8 3.75 1.5 7/16 69008 4mm 0.159 9/16 69004 3/16" 0.189 69012 5mm 0.198 5/8 69005 6mm 0.238 3/4 4.50 2 11/16 69106 1/4" 0.251 69116 5/16 0.314 3/4 69120 8mm 0.317 69108 3/8" 0.377 1 69224 10mm 0.396 69210 12mm 0.474 69212 1/2" 0.502 69232

CNC Single Point Keyway Metric Shank

Keyway Size Tolerance Inches Shank Diameter Overall Length Max. LOC Min. Bore Size EDP No. Hassay Savage

1/8" 0.127 16mm 3.75 1.5 11mm 69308 4mm 0.159 14mm 69304 3/16" 0.189 69312 5mm 0.198 16mm 69305 6mm 0.238 20mm 4.50 2 17mm 69406 1/4" 0.252 69416 5/16" 0.314 69420 8mm 0.317 69408 3/8" 0.377 25mm 69524 10mm 0.396 69510 12mm 0.474 69512 1/2" 0.502 69532