VARIOUS TORQUE METHODS

VARIOUS TORQUE METHODS

In this era, various methods have introduced for controlling the “fastening of a Screw”. It is mandatory to control a screw because if it goes wrong it can create serious damage. “ESTIC” has many methods for controlling the Fastening of a Screw. Controlling the Torque & Angle of a screw is a must because operator who are tightening the screw many times doesn’t tight the full screw or tight the screw in cross direction or tight the screw who already tightened etc. So now here is some full proof controlling methods of ESTIC.
Estic controlling method


Torque method

Torque method

In this method, Fastening happens through “Torque control” until the target torque is reached.
When the target torque is detected, the output spindle is stopped & the OK signal receives. When the upper limit time is exceeded before the target torque is detected, the step terminates due to fastening NG.

Torque method angle monitor

In this method, Fastening is performed through “Torque control” until the target torque is reached and the “Angle” data is monitored concurrently.

When the target torque is detected, the output spindle is stopped and the OK signal receives. When the upper limit angle or upper limit time is exceeded before the target torque is detected, the step terminates due to fastening NG.
Torque method angle monitor

Angle monitoring is started from the point at which the ANG start torque is detected. We can put the angle to start torque with our choice.

Angle method

Angle method
In this method, Fastening is performed through “Angle control” until the target angle is detected and the torque data is monitored concurrently.

Fastening is performed from the point at which the ANG start torque is detected to the target angle. When the target angle is detected, the output spindle is stopped & OK signal receives.
When the upper limit torque or upper limit time is exceeded before the target angle is detected, the step terminates due to fastening NG.

Torque or angle method

Torque or angle method
Basically, this method is the same as the torque method angle monitor. In the case of this method, when either of the target torque and target angle is detected first, the output spindle is stopped and a judgment is made.

Torque & angle method

Unlike the torque or angle method, when both of the target torque and target angle is detected, the output the spindle is stopped and a judgment is made. When the upper limit torque, upper limit angle or upper limit time is exceeded during execution, the step terminates due to fastening NG.
Torque or angle method

Yield angle method

This fastening method brings out the tension (clamping force) of a bolt to the greatest extent. The yield point is obtained from the torque increase rate (torque rate), fastening is performed for the set angle from this point and fastening is completed in a stable plastic region initial state.

A sampling of the angle data is started from the point at which the ANG start torque is detected. When the snug torque is detected, fastening is performed while calculating the torque rate. Additional fastening is performed for the target angle from the point at which the target torque rate is detected, and then fastening is completed.

Yield angle method

When the lower limit angle is not reached at the completion of additional fastening after the detection of the yield point, additional fastening is performed again until the lower limit angle is reached.

Yield method

Basically, this method performs the same control as the yield angle method. In the case of this method, when the lower limit angle is not reached at the completion of additional fastening after the detection of the yield point, additional fastening is not performed and the step terminates due to fastening NG.

Yield method


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