US Patent: 2,022,542
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| Hydraulically Operated Grinding Machine
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Patentees:
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| Carl G. Flygare (exact or similar names) - Worcester, Worcester County, MA |
| Wallace H. Wood (exact or similar names) - Worcester, Worcester County, MA |
| Assignees: |
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Norton Co. - Worcester, Worcester County, MA |
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Patent Dates:
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| Applied: |
Apr. 28, 1933 |
| Granted: |
Nov. 26, 1935 |
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Patent Pictures:
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Joel Havens
Vintage Machinery entry for Brown & Sharpe Mfg. Co.
Vintage Machinery entry for Norton Co.
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Description: |
| Abstract:
This invention relates to a mechanism for moving the slide of a grinding machine, and more particularly to a grinding wheel feeding mechanism for a hydraulically driven surface grinding machine. Heretofore, in grinding machines of the type in which the work table reciprocates longitudinally of the base and the grinding wheel is mounted on a slide movable transversely relative to the longitudinal movement of the table, the transverse feeding movement is obtained by a manually operable feeding mechanism whereby the operator, at the end of the table stroke, may move the wheel transversely so that on the next pass of the work by the wheel, the wheel will grind a fresh path on the surface of the work. Power actuated mechanism, such as a pawl and ratchet mechanism, has been devised for moving the grinding wheel slide transversely, either for a continuous movement or in timed relation with the work table reciprocation. The power actuated feeding mechanisms heretofore provided of the pawl and ratchet type, which are either actuated mechanically, electrically or hydraulically, have been so constructed and arranged that the transverse movement of the wheel at each actuation of the feeding mechanism moves the wheel only a fraction of the wheel width, thereby reducing the efficiency of the machine. To obtain the maximum efficiency of the grinding wheel, it is essential that the wheel be traversed by an amount substantially equal to the width of the wheel so that the operative face of the wheel engages and grinds a different portion of the work at each reciprocation of the work table past the grinding wheel. The primary object of this invention is to provide a grinding machine having a movable slide with a fluid pressure system for moving the same which includes a metering valve arranged to force a measured amount of fluid through said system to move the slide through a predetermined distance.
Claim:
A grinding machine comprising a base having a work support and a rotatable grinding wheel thereon, a traversable slide carrying one of said parts which is movable relative to the base, a fluid pressure system including a piston and cylinder operatively connected to traverse said slide, and a metering valve in said system which is operatively connected to force a measured amount of fluid to said cylinder to move the slide through a predetermined distance. |
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