Resources Contact Us Home
Grinding machine

Image Number 2 for United States Patent #4589230.

A grinding machine including a grinding wheel spindle motor for rotating a grinding wheel, a workpiece spindle motor for rotating a workpiece such as a gear to be ground in mesh with the grinding wheel, and a traverse motor for moving a table supporting the workpiece spindle motor. A power detector and a comparator are connected to a driver circuit for the grinding wheel spindle motor. When a load on the grinding wheel in mesh with the workpiece is increased, such a load increase is detected by the power detector and applied to a comparator. If the load signal is in excess of a reference level, then the application of a drive signal to the traverse motor is interrupted or a speed at which the workpiece is traversed relatively to the grinding wheel is reduced.

  Recently Added Patents
Lateral electric field display panel and display apparatus having the same
Firearm cartridge magazine system
Method of manufacturing a semiconductor device
Multiple mode driving circuit and display device including the same
Field sequential color mode liquid crystal display
Unit frame having grip part
  Randomly Featured Patents
Vehicle seat assembly having load cell based seat occupant sensing system
Dynamic control of a data channel in a TDM wireless communication system
Switchable power level detector for multi-mode communication device
Multiple-stage hydrocarbon conversion with gravity-flowing catalyst particles
Hydride heat pump with heat regenerator
Bubble relief form for concrete
Pressure detection apparatus with squeezing protection member
Wireless dynamic boundary-scan topologies for field
Practice hockey puck
Cross-directional control of sheetmaking systems