| 摘要 |
A low cost robot is constructed using a constant speed motor which drives a gear box having two output shafts which rotate in opposite directions. Each of the shafts has a brake disk thereon and independently rotatable about the shaft is a brake caliper assembly which is in turn connected via a chain to a tool bearing member to be moved. By variously activating one, the other or both of the calipers, position and speed of the tool arm can be exactly controlled. More than one arm or axis may be controlled off of the same motor leading to further economies of manufacture.
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