CUTTER ARBOR

• US 3,691,900 A
• Filed: 04/01/1971
• Issued: 09/19/1972
• Est. Priority Date: 04/01/1971
• Status: Expired due to Term

• Current Assignee: Paul S. Petersen, Ronald D. Novak
• Original Assignee: Paul S. Petersen, Ronald D. Novak
• Inventors: Novak, Ronald D., Petersen, Paul S.
• Primary Examiner(s): Husar, Francis S.
• Application Number:
  US05/130,319
• Time in Patent Office: 537 Days
• Field of Search: 279/1R,1A 143/155R,155A,155B 51/168 90/11A
• US Class Current: 409/233
• CPC Class Codes: B23C 5/26 Securing milling cutters to the driving spindle
• CPC Class Codes: B27B 5/32 Devices for securing circular saw blades to the saw spindle
• CPC Class Codes: F02D 41/3005 Details not otherwise provided for
• CPC Class Codes: Y10T 279/33 Member applies axial force component
• CPC Class Codes: Y10T 409/309464 and draw bar
• CPC Class Codes: Y10T 83/768 Rotatable disc tool pair or tool and carrier

Abstract

A cutter arbor assembly for mounting milling cutters in an arbor holder coupled to the machine drawbar to securely clamp the cutter without having substantial obstructions extending outwardly from the outer cutter face. The arbor assembly permits clamping cutters of different thicknesses and has means to insure that the machine drawbar will always release from the arbor holder before the cutter is loosened.

Claims

1. An arbor assembly for rotary cutters having an arbor opening and adapted to be mounted in a machine spindle having a drawbar, comprising a body member, means on said body member to position said body with respect to said spindle, a stud member, said stud including an arbor section of size to receive an arbor opening of a rotary cutter, head means on said stud engaging said cutter on its outer face to retain said cutter on said arbor section, said body having a longitudinal opening therethrough, said stud extending from a first end of said body member into said opening, a coupler nut extending into said opening from the second end of said body member and threadably engaging said stud, said coupler nut being tightenable on said stud to retain the rotary cutter against an end surface of said body, said coupler nut including means to receive said drawbar for holding the arbor assembly in said machine spindle.

2. The arbor assembly of claim 1 wherein said coupler nut has a flange positioned to bear against an opposite end of said body from said cutter whereby the stud is retained under tension by said coupler nut.

3. The arbor assembly of claim 2 and friction lock means between said flange and the adjacent end of said body member.

4. The arbor assembly of claim 2 and compressible resilient friction means between said flange and the adjacent end of the body member to provide a compressible friction member to restrain turning of said coupler nut.

5. The arbor assembly of claim 1 wherein said longitudinal opening in said body member includes a pilot end having a cylindrical pilot hole, said arbor section of said stud closely slidably fitting within said pilot hole. said pilot

6. The arbor assembly of claim 5 wherein the opening through said body member includes a guide section adjacent the pilot end hole, said guide section being slightly larger than said stud to align said stud with the axis of said pilot hole to prevent binding of the arbor section with the surfaces defining said pilot hole.

7. The arbor assembly of claim 5 wherein said pilot hole is a first diameter to receive the arbor section of a stud for a cutter having an arbor oPening of a first diameter, and adapter means for cutter members having smaller diameter arbor openings than said first diameter, said adapter means comprising an adapter member having a member pilot section to slidably pilot into said body member, said stud comprising a stud having an arbor section of diameter to fit the smaller diameter arbor opening, said adapter having an internal pilot hole to receive the smaller diameter arbor section, and said stud being of length to engage the coupler nut to clamp the cutter and adapter member against said arbor body.

8. The combination as specified in claim 7 wherein said coupler nut has a flange facing the adjacent end of said arbor body member, and a resilient O-ring positioned between said flange and the end of said arbor body.