Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool
Patent
1976-11-15
1978-03-07
Hinson, Harrison L.
Cutters, for shaping
Rotary cutting tool
Including holder having seat for inserted tool
29 78, 157 13, 144227, 241221, 407113, B26D 112, B23D 7100, B29H 2108, B27G 1300
Patent
active
040777332
ABSTRACT:
A device for removing the wearing surface of a tire before resurfacing includes a pair of disks detachably fixed together and having a common peripheral groove of partial circular cross-section. A number of ring-shaped cutting bits having cutting edges at each end, each formed having a number of outer surface grooves parallel to the ring axis for causing a rough cut, are equally spaced around the disks in the peripheral groove, with part of the ring cutting edges exposed. When the disks are fixed together, the rings are clamped in the peripheral groove, secure holding of slightly different sized rings being enabled by slots in the disk circumferences which form sector parts each holding two cutting bits. Each ring may be formed with an outer, encircling groove, enabling the rings to be strapped to the disks for additional holding security. Symmetrical ring cutting edges permits the disks to be rotated in either direction for cutting, disk rotation being at right angles to the direction of tire rotation and disk rotational speed being preferably ten times tire rotational speed. Material, transversely removed from the tire in a slicing action, is discharged through the open center of the rings, air flow through the open centers providing air cooling. As exposed bit cutting edges become worn, the bits are turned in the disk groove to expose new cutting edge portions; rings are quickly replaced by loosening the two disks. A variation is described in which the bits are mounted in peripheral disk sockets, turning of the bits in the sockets varying the cutting angle of the cutting edges.
REFERENCES:
patent: 901681 (1908-10-01), Collet
patent: 1971428 (1934-08-01), Riordan
patent: 2183082 (1939-12-01), Montagne
patent: 3604084 (1971-09-01), Krieger et al.
Fowler Allan R.
Hinson Harrison L.
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