Apparatus for fitting and for drilling variable size holes in a

Details Apparatus for fitting and for drilling variable size holes in a Apparatus for fitting and for drilling variable size holes in a

1995-06-26

1997-03-11

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

Including means to infeed rotary cutter toward work

408 3, 408 13, 408150, 408173, 409204, B23C 300, B23B 4100

Patent

active

056094493

ABSTRACT:
The length of a drilling cycle in a bowling ball fitting and drilling method is reduced in an apparatus including a fitting apparatus (10) usable by a bowler to determine the size of a thumb hole and at least one finger hole to be drilled in a bowling ball and including a drilling apparatus (14) having a ball support (22), a rotatable drilling tool (30) movable relative thereto and a drive (36) for the drilling tool (30). A dove tail slide connection (50), (52) provides for moving the drilling tool (30) in an orbital path and an adjustment mechanism (56), (58), (60), (62), (70), (84) is provided whereby the diameter of the orbital path may be varied to vary the diameter of a hole drilled in the ball. A control motor (122) is responsive to the fitting apparatus (10) to operate the adjusting mechanism (56), (58), (60), (62), (70), (84). The control motor 122 is carried by the drive (36) and thus, may be adjusted "on the fly".

REFERENCES:
patent: 2775147 (1956-12-01), Schnebeli et al.
patent: 3465619 (1969-09-01), Blaker et al.
patent: 3640633 (1972-02-01), Sersch et al.
patent: 3685917 (1972-08-01), Patt
patent: 3700345 (1972-10-01), Schubert
patent: 3884590 (1975-05-01), Skrentner et al.
patent: 4260306 (1981-04-01), Weis

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