VARIOUS MODES OF PRESSING CONTROL IN ESTIC SERVO PRESS

VARIOUS MODES OF PRESSING CONTROL IN ESTIC SERVO PRESS

Estic  mainly manufactures three products Handheld nutrunner , Fixture nutrunner & Servo Presses . Today we talk about the Estic Servo Press & its main control methods . Servo Presses are mainly use for Press-in like Bearing , Valve guide , Valve seat , Plug , Bush , Pin etc. and also for  crimping , straightening , fitting , punching & positioning . Some people uses heavy pneumatic cynliders for pressing applications , but in them they can’t control the position , motion , speed , load applied etc. So that cylinders may damage the application & they have high consumption of air & have high maintenance cost . Some of the companies also make Presses but they don’t have enough features for controlling the various specs of application . Pressing application are always critical . They need high accuracy . So estic Servo press are only made of that types of critical applications .

estic servo press


Servo means they have the servo system inside it , they can control very minor specs & gives a high accurate pressing . They have very low maintenance cost . Somewhere these servo presses are running from last 10 years without any maintenance . They are compact in size , highly durable , available upto 100KN , Repeatibility(mm)  ±0.01% etc. They have the SPU controller with it from whom you can take the data , program the servo press , multi spindle pressing is also possible , multi stage pressing is also possible , complete pokayoke also possible .

SOME FEATURES

􀉹Environmental consideration
Less consumtion of energy & low noise is possible with superior quality of servo motor . Consumes 10-20% less energy in comparison with air or oil powered presses
􀉹Improvement of production
Unique modes like Controlling load, position, speed, and time with high accuracy lowers the production cycle time . Feeding back real time operation conditions prevents damaging work object.
􀉹Safety Design
In power failures they have the unique Internal brake holds ram feature to prevent free fall
􀉹Easy setup
Installing setup procedure is very easy . System configuration is also simple consisting of tool, controller, cable. User friendly parameter input enables short setup times. (High accuracy load cell and resolver are used)
􀉹Traceability
A large range of data is collected allowing for full traceability.


features of estic servo


CONTROLLING METHODS

·         LOAD CONTROL POSITION MONITOR
In this method Pressing operation doesn’t stop until target load not achieved . The operation stopped at the time when load target load is detected , then a comparison made between “upper & lower” load limit & “upper & lower” limit position & “lower limit” time also . If the “Upper Position” is detected before the target load is detected, the shaft stops at that point and the unit displays “Position high NG”. It also stops if the pressing time exceeds the “Upper Limit Time”, and then displays “Time high NG”.

controlling methods
·         POSITION CONTROL LOAD MONITOR
In this method Pressing operation doesn’t stop until target Position not achieved . The operation stopped at the time when target position is detected , then a comparison made between “upper & lower” position limit & “upper & lower” load limit & “lower limit” time also . ”. If the “Upper Limit load Value” is detected before the target position is detected, the shaft stops and the result are tagged as “Load high NG”. It also stops if the pressing time exceeds the “Upper Limit Time”, and then the result is tagged as “Time high NG”.

positioning control load monitor


·         INCREMENT CONTROL
In this method Pressing operation doesn’t stop until target Position not achieved . The operation stopped at the time when target position is detected , then a comparison made between “upper & lower” position limit & “upper & lower” load limit & “lower limit” time also . ”. If the “Upper Limit load Value” is detected before the target position is detected, the shaft stops and the result are tagged as “Load high NG”. It also stops if the pressing time exceeds the “Upper Limit Time”, and then the result is tagged as “Time high NG”.

increment control


·         LOAD & INCREMENT CONTROL
The pressing will be done until it goes beyond two set target values, Target Load (Load control) and Target Position (Increment control). At the time of target position being detected, load, position, and time will be judged. In case of “Upper Position” being detected before the detection of target position, it stops and is judged as “Position High NG”. In case of “Upper Load” being detected before the detection of target position, it stops and is judged as “Load high NG”. Also, If it goes beyond “P-ST MAX TIME”, it stops and is judged as “Time High NG”. In case of going beyond Snug Position Limit before Snug load is detected, it stops and is judged “Position Low NG”.
In terms of Position data of pressing result, if it comes to an end by detecting more load than Snug load, the stroke from the Snug point is displayed and output.


load & increment control

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