US3885924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankshaft grinding machine
Assignee: Friedrich Schmaltz GmbH
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Filing: 1974-06-24
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Granted: 1975-05-27
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Expires: 1994-06-24
Abstract
Abstract A crankshaft grinding machine comprises a chuck for mounting the crankshaft for rotation about the axis of the main bearing pin and a grinding wheel mounted for reciprocation in relation to the crankshaft on a slide for movement perpendicular to the axes of rotation of the crankshaft and the grinding wheel. A crank drive reciprocates the slide, the lengths of the cranks of the crankshaft and of the crank drive being identical and the crank drive including a push rod connected to the slide. The length of the push rod is identical to the distance between the axis of the crankshaft crank pin and the axis of rotation of the grinding wheel.
Inventors
- 👤 Kurt Marowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:06
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/42
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
A grinding machine for grinding a crankshaft having a main bearing pin and a crank pin arranged to revolve around the main bearing pin during rotation of the crankshaft, the machine comprising 1. means for mounting the crankshaft for rotation about the axis of the main bearing pin, 2. a grinding wheel mounted for movement in relation to the crankshaft and for rotation about an axis substantially parallel to the axis of rotation of the main bearing pin of the crankshaft, 3. a slide means supporting the grinding wheel for reciprocation in relation to the crankshaft in a direction perpendicular to the axes of rotation, and 4. a crank drive operatively connected to the slide means for reciprocating the slide means, a. the lengths of the cranks of the crankshaft and of the crank drive being identical and b. the crank drive including a push rod connected to the slide means, the length of the push rod being identical to the distance between the axis of the crank pin and the axis of rotation of the grinding wheel.
Claim 2
Dependent Claim
178 words
A grinding machine for grinding a crankshaft having a main bearing pin and a crank pin arranged to revolve around the main bearing pin during rotation of the crankshaft, the machine comprising 1. means for mounting the crankshaft for rotation about the axis of the main bearing pin, 2. a grinding wheel mounted for movement in relation to the crankshaft and for rotation about an axis substantially parallel to the axis of rotation of the main bearing pin of the crankshaft, 3. a slide means supporting the grinding wheel for reciprocation in relation to the crankshaft in a direction perpendicular to the axes of rotation, and 4. a crank drive operatively connected to the slide means for reciprocating the slide means, a. the lengths of the cranks of the crankshaft and of the crank drive being identical and b. the crank drive including a push rod connected to the slide means, the length of the push rod being identical to the distance between the axis of the crank pin and the axis of rotation of the grinding wheel.
Claim 3
Dependent Claim
32 words
a grinding wheel mounted for movement in relation to the crankshaft and for rotation about an axis substantially parallel to the axis of rotation of the main bearing pin of the crankshaft,
Claim 4
Dependent Claim
32 words
a grinding wheel mounted for movement in relation to the crankshaft and for rotation about an axis substantially parallel to the axis of rotation of the main bearing pin of the crankshaft,
Claim 5
Dependent Claim
68 words
The crankshaft grinding machine of claim 1, wherein the axis of symmetry of the crank drive extending from the axis of rotation of the crank of the drive to the point of connection of the push rod to the slide means is parallel to the line of connection between the axis of the main bearing pin of the crankshaft and the axis of rotation of the grinding wheel.
Claim 6
Dependent Claim
18 words
The crankshaft grinding machine of claim 1, comprising means for synchronously driving the crank drive and the crankshaft.
Claim 7
Dependent Claim
24 words
a slide means supporting the grinding wheel for reciprocation in relation to the crankshaft in a direction perpendicular to the axes of rotation, and
Claim 8
Dependent Claim
24 words
a slide means supporting the grinding wheel for reciprocation in relation to the crankshaft in a direction perpendicular to the axes of rotation, and
Claim 9
Dependent Claim
71 words
a crank drive operatively connected to the slide means for reciprocating the slide means, a. the lengths of the cranks of the crankshaft and of the crank drive being identical and b. the crank drive including a push rod connected to the slide means, the length of the push rod being identical to the distance between the axis of the crank pin and the axis of rotation of the grinding wheel.
Claim 10
Dependent Claim
71 words
a crank drive operatively connected to the slide means for reciprocating the slide means, a. the lengths of the cranks of the crankshaft and of the crank drive being identical and b. the crank drive including a push rod connected to the slide means, the length of the push rod being identical to the distance between the axis of the crank pin and the axis of rotation of the grinding wheel.
Claim 11
Dependent Claim
24 words
The crankshaft grinding machine of claim 1, comprising means for longitudinally adjustably connecting the push rod of the crank drive to the slide means.
Claim 12
Dependent Claim
108 words
The crankshaft grinding machine of claim 1, wherein in all grinding positions, two congruent triangles are formed, on the one hand, by the crank of the crankshaft, the distance between the axis of the crank pin and the axis of rotation of the grinding wheel, and the distance between the axis of the main bearing pin and the axis of rotation of the grinding wheel, and on the other hand, by the crank of the crank drive, the length of the push rod, and the distance between the axis of rotation of the crank drive and the point of connection between the push rod and the slide means.
References Cited (Backward Citations)
US2232228A
Cited
US2232229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |