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Apparatus for and method of automatically assembling an automobile body structure |
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Installation for automatic assembly of components and, in particular, components of motor vehicle bodies |
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Pneumatic hammer |
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Method and apparatus for grinding multiple workpieces
| Details |
Inventors: Kummer, Kenneth L.;
Assignee:
Primary Examiner: Schmidt; Frederick R.
Assistant Examiner: Rose; Robert A.
Attorney, Agent or Firm: Dressler, Goldsmith, Shore, Sutker & Milnamow, Ltd.
A method and apparatus are provided for effecting high production rate grinding of a plurality of workpieces on a grinding wheel rotating about an axis with reduced power consumption. Each workpiece is mounted in a holding fixture adjacent the grinding wheel to expose a face of the workpiece to be ground. The fixtures are positioned at spaced locations around the periphery of the grinding wheel whereby a grinding station is defined at each location. In one embodiment of the invention, one workpiece at a time is ground, but the grinding of a workpiece begins substantially simultaneously with the termination of the grinding of the preceding workpiece. The apparatus includes a vertically disposed grinding spindle with a grinding wheel mounted on the spindle driven by a motor which, along with the spindle, has a fixed location within the grinding machine housing. A removable upper spindle support member may be removably mounted to the housing above the grinding wheel. |
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DETAILED DESCRIPTION A method and apparatus are provided for high production rate grinding of a plurality of workpieces on a grinding wheel rotating about an axis. In one embodiment, each workpiece is mounted in a holding fixture adjacent the grinding wheel to expose a face of each workpiece to be ground. The fixtures are positioned at spaced locations around the periphery of the grinding wheel whereby a grinding station is defined at each location. Next, only one of the workpieces in its fixture is moved in a path against the grinding wheel at a corresponding grinding station so as to grind a face of the one workpiece. After that grinding step, the one workpiece is moved in its fixture toward a location out of contact with the grinding wheel. These last two steps are repeated for each of the remaining workpieces seriatim. In one embodiment of the apparatus, the apparatus includes control means for sequentially operating the apparatus to move the fixtures (which each contain one workpiece) so that each workpiece is brought into contact with the grinding wheel after a preceding workpiece has been moved out of contact with the grinding wheel. In another form of the invention, each fixture can be provided with a plurality of workpiece holding clamps arranged one behind the other. A workpiece is mounted in each clamp. One fixture at a time is then sequentially moved against the grinding wheel to grind each of the workpieces seriatim. In another embodiment, a grinding machine is provided with a housing, a vertically disposed grinding spindle, a spindle motor, a grinding wheel mounted on the spindle, a removable upper spindle support member removably mounted to the housing above the grinding wheel, and a bearing mounted in the upper spindle support member and engaged with the spindle above the grinding wheel. This embodiment of the apparatus will accommodate a number of unique grinding methods wherein a plurality of workpieces may be ground either sequentially or simultaneously. In still other embodiments of the invention, a handling system is provided for substantially automatically changing the grinding wheel
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