Apparatus and method for laminated grinding disks employing vibration damping materials
AssigneeFeldmuehle Aktiengesellschaft
InventorsHans J. Padberg, Josef Keuler, Henning Brandin, Klaus H. Thormeier
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Abstract
Laminated grinding disks are built up in layers with the interposition of at least one layer of vibration-damping materials as sound insulation, the layer of vibration-damping materials being placed in the mold in the form of fine, free-flowing powder and/or granules. The powder or granules can consist of elastomers which can withstand heating to more than 110.degree. C. The elastomer can be mixed with synthetic resin. The addition of filler improves the working qualities of the mixture and improves its granulability.
Claims32
A method for producing a laminated grinding disk of the type used for free-hand grinding and formed of layers of abrasive grits and binding agents separated by layers of vibration damping material wherein the method comprises the following steps:
- (a) introducing a first layer having a mixture of abrasive grits and binding agents into a press mold;
- (b) introducing a second layer of vibration damping material in the form of a free-flowing powder or a granular product into said press mold;
- (c) introducing a third layer having a mixture of abrasive grits and binding agents into said press mold;
- (d) pressing said first, second and third layers together to form a sandwich and preventing delamination of said layers;
- and
- (e) curing said sandwich and forming the laminated grinding disk.
In an improved laminated grinding disk of the type used for free-hand grinding and formed of layers of abrasive grits and binding agents separated by layers of vibration damping material the improvement comprising:
- (a) forming the disk by introducing a first layer having a mixture of the abrasive grits and the binding agents into a press mold;
- (b) introducing a second layer of vibration damping material in the form of one of a free-flowing powder and granular product onto said first layer in said press mold;
- and
- (c) introducing a third layer having a mixture of the abrasive grits and the binding agents onto said second layer of said vibration damping material in said press mold, said third layer being pressed together with said firs and second layers and forming a sandwich, said sandwich cured into the laminated grinding disk and delamination of said first, second and third layers being prevented.
Dependencies are inferred from the claim text.