2820187

Information

• Patent Grant
• 2820187

• References
• Source

• Patent Number

  2,820,187

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1958
  66 years ago

• CPC

  • G05B19/251 - the positional error is used to control continuously the servomotor according to its magnitude
  • G05B2219/35187 - Surface ridges, cusps, scallops, distance of tool traverses as function of curvature
  • G05B2219/35265 - Check time differences of command signals
  • G05B2219/35271 - Checking electronics
  • G05B2219/41069 - With cam
  • G05B2219/42318 - Using two, more, redundant measurements or scales to detect bad function
  • G05B2219/43194 - Speed steps, switch over as function of position
  • G05B2219/49196 - Screw
  • G05B2219/49237 - Depth, tool depth control
  • G05B2219/49243 - 5-D
  • G05B2219/50289 - Tool offset general
  • G05B2219/50334 - Tool offset, diameter correction
  • G05B2219/50353 - Tool, probe inclination, orientation to surface, posture, attitude
  • Y10T74/18616 - Single input, plural outputs
  • Y10T82/142 - with workpiece gauge
  • Y10T408/08 - with means to regulate operation by use of templet, tape, card, or other replaceable information supply
  • Y10T409/300896 - with sensing of numerical information and regulation without mechanical connection between sensing means and regulated means [i.e., numerical control]

• US Classifications

  • 318 - Electricity: motive power systems
  • 074 - Machine element or mechanism
  • 082 - Turning
  • 192 - Clutches and power-stop control
  • 408 - Cutting by use of rotating axially moving tool
  • 409 - Gear cutting, milling, or planing