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Description: |
| Abstract:
In the mounting of grinding and polishing wheels, there has been no particular difficulty with devices for rough or ordinary usage. In the case of precision work however, if a bodily-movable wheel is desired, it has been a serious problem to attain free mobility and yet have sufficient accuracy. Vibration and chattering and rebound have constituted difficult obstacles. A construction which offers freedom from such limitations, and which is at the same time not unduly complicated, is accordingly an important desideratum in the art.
Claims:
1. A grinding and polishing machine, comprising a frame, a grinding or polishing wheel, a shaft for the grinding or polishing wheel, a crosshead for carrying said shaft, a screw-threaded control means in said frame for positioning said cross-head with total freedom of upward movement, means for mounting said cross-head in maintained parallelism in said frame, and means for floatably supporting said cross-head without connection thereto.
2. A grinding and polishing machine, comprising a frame, a grinding or polishing wheel, a shaft for the grinding or polishing wheel, a cross-head for carrying said shaft, and a fluid pressure bellows unconnected to said cross-head supporting and cushioning the same.
3. A grinding and polishing machine, comprising a grinding or polishing wheel, a shaft for the grinding or polishing wheel, a cross-head carrying said shaft, a screw-threaded control means in said frame for positioning said cross-head,
fluid-pressure means unconnected to said crosshead cushionably supporting the same, and housing-means enclosing the said frame and crosshead.
4. A grinding and polishing machine, comprising a grinding or polishing wheel, a shaft for the grinding or polishing wheel, a cross-head for carrying said shaft, and means for inhibiting vibration of said wheel, said means including a wrought metal frame, rock-arms connecting the upper and lower portions of said cross-head to the frame, a driving motor secured to said cross-head below said shaft, and means for cushionably supporting said cross-head.
5. A grinding and polishing machine, comprising a grinding or polishing wheel, a shaft for said wheel, a cross-head in which said shaft is carried, means for mounting said cross-head for freedom of movement in a vertical plane, and means for inhibiting vertical vibration of said wheel, said means including a frame of low vibrational-response, a driving motor hung on said cross-head below said shaft, and a cushion in the path of said cross-head.
6. A grinding and polishing machine, comprising a grinding or polishing wheel, a shaft for said wheel, a cross-head in which said shaft is carried, means for mounting said cross-head for freedom of movement in a vertical plane, and means for inhibiting vertical vibration of said wheel, said means including a frame of low vibrational-response, a driving motor hung on said cross-head below said shaft, and a fluid-pressure buffer in the path of said cross-head opposing downward movement thereof.
7. A grinding and polishing machine, comprising a grinding or polishing wheel, a shaft for said wheel, a cross-head in which said shaft is carried, means for mounting said cross-head for freedom of movement in a vertical plane, and means for inhibiting vertical vibration of said whee1, said means including a frame of low vibrational-response, a driving motor hung on said crosshead below said shaft, and a fluid-pressure bellows supporting said cross-head against vibration.
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