Servo pressing machine

Abstract

Provided is a servo- pressing machine having experiment functions to judge more accurately brake performances during emergency stop. The servo- pressing machine (1) executes as a series of actions, e following brake performance experiments: a) beginning an experiment; b) dropping down a link slide block at a fixing speed; c) emergency stop signals instructions; d) working of the electrical brake and the mechanical brake; e) measuring the time (stop time) from c) to stopping of the link slide block, and / or calculating the moving distance from c) to stopping of the link slide block; f) judging whether the stop time and / or the moving distance is qualified; g) making only the electrical brake of the mechanical brake to run and implementing b)-e), if f) judges that is not qualified; h) judging respectively whether the stop time and / or moving distance for each brake is qualified; i) displaying the judging results. Since the servo- pressing machine body has an instruction sequence for executing brake performance tests, one can executing examination procedures proportioning task instances without consigning an inspecting authority to execute emergency stops for examination procedures affirmation and the like.

Description

Technical field [0001] The invention relates to a servo press that uses a servo motor to make a slider move linearly. In particular, it relates to a high-safety servo press with an emergency stop check function. Background technique [0002] The servo press uses a motion conversion mechanism to make a slider (press head) perform linear motion, wherein the motion conversion mechanism converts the rotational motion of a servo motor such as an AC servo motor into a linear motion. In this servo press, the position / speed of the slider can be freely controlled, and the pressure of the press can also be easily controlled. Therefore, the forming accuracy of the stamped product is improved, and the productivity is also high, so in recent years, it has been widely used instead of the mechanical type. [0003] In such a servo press, a mechanical brake and an electric brake are usually used for the stop of the slider in an emergency. The mechanical brake, for example, provides frictional res...

AI Technical Summary

Problems solved by technology

However, in this press machine, when there is an abnormality in the emergency stop, it is not possible to determine exactly which part of the abnormality occurred, and it is difficult to obtain a subsequent handling policy.

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