Appeal No. 2002-0049 Page 8
Application No. 09/317,538
mounted to a work table 16. An index table controller 22 operates a drive mechanism
20 to control the position of index table 18 and the workpiece secured thereto. Tool
holder 10, rotary cutting tool 30 and robot arm 14 are positioned above work table 16
and index table 18.
Dombrowski's tool holder 10 is shown in greater detail in Figure 4. The tool
holder includes a housing 42 consisting of a front plate 44, side plates 46 and 47, a
back plate 48 opposite front plate 44, and a top plate 49. The upper portion of an air
grinder 34 is secured within a yoke 40 within housing 42. The lower portion of grinder
34 extends below the housing and yoke. Deburring tool 30 is held in a chuck 32
attached to, and rotated by, grinder 34. Linear bearings 38 are positioned between
yoke 40 and side plates 46 and 47 to permit translation of the yoke and grinder
between the front and back plate of the housing. Arrow 41 shows the direction of travel
in which yoke 40 and grinder 34 are constrained by housing 42 and bearings 38.
Placed between yoke 40 and back plate 48 is a compliance device 36. The compliance
device is a shock absorber device which functions to dampen motion of the grinder and
yoke in the direction shown by arrow 41.
Dombrowski's deburring tool 30, also known as a rotary grinder or bur, is shown
in side view in Figure 5. The deburring tool includes a shaft 52, a plurality of flutes or
cutting teeth 54, and an integral guidance pilot 56. The deburring tool is symmetric
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Last modified: November 3, 2007