Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Apparatus for rotating a wrist of a robot










Image Number 4 for United States Patent #4995782.

An apparatus for rotating a wrist shaft of a robot comprising an indexing plate which is rotated by a motor through a friction coupling, a roller which is pressed against the indexing plate and which is disengaged from recesses in the indexing plate by an air cylinder. The motor and air cylinder are controlled by a timing mechanism which is responsive to indexing signals and to signals from a series of proximity switches, there being one proximity switch actuable at each of the several indexing positions. Indexing positions are selected by transmitting indexing signals to the timing mechanism. Upon receipt of an indexing signal requiring movement of the wrist shaft, the timing mechanism actuates the air cylinder, releasing the indexing plate. Immediately thereafter, it starts the motor. In the case of a single step indexing operation, the roller is released to engage the indexing plate after a predetermined time interval, and the power to the motor is thereafter cut off. In the case of a multiple step indexing operation, the timing mechanism releases the roller to engage the indexing plate following a predetermined interval after actuation of the proximity switch corresponding to the indexing position immediately preceding the selected indexing position. Again, the power to the motor is cut off after the roller engages the indexing plate. In each case, the roller engages the outer periphery of the indexing plate and the action of the roller against rounded transitions between the outer periphery and the recesses assists in rotating the wrist shaft to the selected indexing positions.








 
 
  Recently Added Patents
Decoding and presentation time stamps for MPEG-4 advanced video coding
Methods, systems and computer program products for importing data from an edge router to a network management system
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
Method and device for reducing image color noise
Method and apparatus for communication channel error rate estimation
Method for distributing advertisements to client devices using an obscured ad monitoring function
Method for maintaining a driver-independent braking intervention after a collision
  Randomly Featured Patents
Clean grinding system
Adjustable rug hooking implement
Method of detecting endometrial cancer comprising measuring levels of fibrocystin-L
Method for manufacturing golf club head
Triazinone synergistic compositions
Low profile metal/polymer tubes
Hydraulic power system
Outdoor menu display device
Connector with a terminal locking member
Stroking constant velocity universal joint having low stroke load