Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Die cushion device of pressing machine










Image Number 13 for United States Patent #8127590.

In a die-cushion device of a press machine a controller controls an opening degree of a proportional flow-rate control valve to an appropriate opening degree in order to control the flow rate flowing out of a lower chamber of a hydraulic cylinder supporting a cushion pad before a slide collides against the cushion pad using a die-cushion pressure command commanded from a commander in advance and a slide speed signal inputted from a slide speed detector. By this, generation of a surge pressure when a slide collides against the cushion pad at a high speed is restricted.








 
 
  Recently Added Patents
Non-zero rounding and prediction mode selection techniques in video encoding
Film, polarizing plate and display device, and method of manufacturing film
Uplink synchronization management in wireless networks
Method and apparatus for communication channel error rate estimation
Device, information processing method, and computer-readable storage medium
Semiconductor device and manufacturing method thereof
Pixel structure of organic light emitting device
  Randomly Featured Patents
Adaptive filter with tap coefficient leakage
Device for the thermal deburring of workpieces
Cursor positioning via voice recognition
Edge of roof perimeter workman safety light device
Apparatus and method for supporting, positioning and rotating a substrate in a processing chamber
Railroad gondola car structure and mechanism therefor
Semiconductor device and method for the fabrication thereof
Methods for laser scribing wafers
Composite hard mask for the etching of nanometer size magnetic multilayer based device
Process for the reduction or elimination of NH3/HF byproduct in the manufacture of nitrogen trifluoride