Resources Contact Us Home
Control system for synchronized operation of machine tool motors

Image Number 3 for United States Patent #4353018.

An improved control system for facilitating tapping work in a machining center of the type which performs a variety of machining operations automatically. Control is effected by establishing and maintaining a certain relationship between the operation of a spindle motor which rotates a tap, and the operation of a Z-axis feed motor which transports a table longitudinally of the tap, the table mounting a workpiece. Specifically, the spindle motor and Z-axis feed motor are driven in relation to one another at all times in such a manner that the equation N.sub.s =f.sub.m /P will be satisfied, where N.sub.s (rpm) is the rotational speed of the spindle motor, f.sub.m is the feed speed of the table along the Z-axis, and P is the thread pitch of the tap. Apparatus for controlling the spindle motor includes a control circuit which is adapted to stop the spindle at a prescribed angle of rotation.

  Recently Added Patents
Method and apparatus for distributing promotional materials
Look up table (LUT) structure supporting exclusive OR (XOR) circuitry configured to allow for generation of a result using quaternary adders
Hair care composition
Keypad assembly for electronic devices
Accelerator for a read-channel design and simulation tool
Key management policies for cryptographic keys
  Randomly Featured Patents
Switch for a carriage of a two track suspension railroad
Adhesive RTV silicone rubber compounds
Electronic package with stacked modules with channels passing through metal layers of the modules
N-pyrimidinyl-N-dialkylaminoalkyl ureas
Integrated circuit package in package system with adhesiveless package attach
Machine readable medium and method for data storage security
Linear actuator
Demultiplexer drive circuit
Pulse width modulated inverter
Lossless inductor current sensing in a switch-mode power supply