Grinding machine
First Claim
1. A grinding machine, comprising a supporting structure, a pair of grinding wheels mounted for rotation with respect to the supporting structure, each grinding wheel having a generally cylindrical surface and an outer beveled surface disposed at an angle of less than 45°
- with respect to said cylindrical surface, said beveled surfaces disposed in mating relation to grind a blade inserted therebetween, dressing means including a separate dressing element for each grinding wheel for dressing the beveled surface of the respective grinding wheels, support means to carry the dressing means, and mounting means for mounting the support means for movement in a non-linear path with respect to the supporting structure such that each dressing element will move across the respective beveled surface to dress the same during movement of said support means.
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Accused Products
Abstract
A grinding machine incorporating a pair of cup-shaped grinding wheels. Each grinding wheel has an annular outer beveled surface, and the blade to be sharpened is inserted between the mating beveled grinding surfaces. Each grinding wheel can be moved in an axial direction to move the beveled grinding surfaces toward and away from each other. A dressing mechanism is incorporated which includes a pair of dressing pins mounted on a reciprocating bar, the ends of which are pivotally connected to the supporting structure through links. As the bar is moved longitudinally through a rack and pinion mechanism, the dressing elements move across the respective beveled grinding surfaces of the grinding wheels to dress the same.
11 Citations
15 Claims
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1. A grinding machine, comprising a supporting structure, a pair of grinding wheels mounted for rotation with respect to the supporting structure, each grinding wheel having a generally cylindrical surface and an outer beveled surface disposed at an angle of less than 45°
- with respect to said cylindrical surface, said beveled surfaces disposed in mating relation to grind a blade inserted therebetween, dressing means including a separate dressing element for each grinding wheel for dressing the beveled surface of the respective grinding wheels, support means to carry the dressing means, and mounting means for mounting the support means for movement in a non-linear path with respect to the supporting structure such that each dressing element will move across the respective beveled surface to dress the same during movement of said support means.
- View Dependent Claims (2, 3, 12)
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4. A grinding machine, comprising a supporting structure, a pair of generally cup-shaped grinding wheels mounted for rotation on the supporting structure, each grinding wheel having an outer generally cylindrical surface and an outer beveled surface disposed at an angle of less than 45°
- with respect to said cylindrical surface, said beveled surfaces being disposed in proximate mating relation along a lone of tangency to grind an article inserted therebetween as the wheels are rotated, drive means for rotating said wheels, a pair of dressing members with each dressing member disposed to dress the beveled grinding surface of one of said grinding wheels, a bar to support the dressing members in spaced relation, a link pivotally connecting each end of the bar to the supporting structure whereby the bar can move in a slightly arcuate reciprocating path of travel, one of said dressing members disposed to ride across the beveled surface of the corresponding grinding wheel as the support bar is moved from one end of the path of travel toward the mid-point of the path of travel and the other of said dressing members disposed to ride across the beveled surface of the other grinding wheel as the bar is moved in the same direction from said mid-point to the opposite end of said path of travel, and operating means for moving said bar in said path of travel.
- View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 13, 14)
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15. A grinding machine, comprising a supporting structure, a pair of generally cup-shaped grinding wheels mounted for rotation on the supporting structure, each grinding wheel having an outer generally cylindrical surface and an outer beveled surface disposed at an acute angle with respect to said cylindrical surface, said beveled surfaces being disposed in proximate mating relationship along a line of tangency to grind an article inserted therebetween as the wheels are rotated, drive means for rotating said wheels, a pair of dressing members with each dressing member disposed to dress the beveled grinding surface of one of said grinding wheels, support means to carry the dressing members, and means for moving the support means in a path of travel to move one of said dressing members across the beveled surface of the respective grinding wheel at a location spaced from said line of tangency during a first portion of said path of travel and to move the other of said dressing members across the beveled surface of the other grinding wheel at a location spaced from said line of tangency during a second portion of said path of travel.
Specification