Thru-stroke tipping moment severity monitor
AssigneeThe Minster Machine Company
InventorDaniel A. Schoch
Life of this patent
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Abstract
An apparatus and method for monitoring the tipping moment severity of a mechanical press for the purpose of accurately predicting die reliability. The method includes generating a unique tipping moment severity chart for the press application to be monitored and continually monitoring the tipping moment level during production operation of the press. Apparatus is used to monitor the applied load which is communicated to a computational device for computing and plotting tipping moment severity on the tipping moment severity chart.
Claims25
An apparatus for monitoring the die reliability condition of a running press, the running press having a bed, said apparatus comprising:
- at least one load sensor for sensing a load value, said at least one load sensor attached to the bed of the running press;
- and
- a computational device for computing a plurality of computed values, said device storing a plurality of data relating to the running press and receiving the load value from said at least one load sensor, wherein one of said plurality of computed values is a measure of the tipping moment severity of the running press based on said sensed load value from said at least one load sensor, said computational device communicatively connected to said at least one load sensor.
A method of monitoring the die reliability condition of a running press, the running press having a bed, said method comprising:
- monitoring the tipping moment severity of the running press.
A method of generating, for a particular press and die set, a unique tipping moment severity chart, comprising:
- dividing the ordinate of a tipping moment severity versus slide vertical position graph into a plurality of zones representing differing tipping moment severity levels;
- plotting the slide vertical motion on said tipping moment severity chart;
- dividing the ordinate of the tipping moment severity versus slide vertical position graph into a plurality of zones of criticality representing differing phases of punch travel;
- projecting the zones of criticality onto the plot of slide vertical motion;
- and
- projecting the zones of criticality from the plot of slide vertical motion to the abscissa.
A method of monitoring the die life risk condition of a mechanical press comprising:
- monitoring the tipping moment severity of the press;
- generating a unique tipping moment severity chart for the press;
- plotting the monitored tipping moment severity of the press on the unique tipping moment severity chart for the press;
- providing a computational device;
- and
- computing the die life risk condition of the press.
An apparatus for monitoring the die reliability condition of a running press, the running press having a bed, said apparatus comprising:
- at least one load sensor for sensing a load value, said at least one load sensor attached to the bed of the running press;
- a computational device for computing a plurality of computed values, said device storing a plurality of data relating to the running press and receiving the load value from said at least one load sensor, wherein one of said plurality of computed values is a measure of the tipping moment severity of the running press based on said sensed load value from said at least one load sensor, said computational device communicatively connected to said at least one load sensor;
- and
- a data plotting device communicatively connected to said computational device, said data plotting device configured for graphically charting said measure of the tipping moment severity.
A method of monitoring the die reliability condition of a running press, the running press having a bed, said method comprising:
- monitoring the tipping moment severity of the running press;
- generating at least one tipping moment severity value as a result of said step of monitoring;
- and
- plotting each said tipping moment severity value graphically.
Dependencies are inferred from the claim text.