Servo pressing machine

A technology of servo presses and servo motors, applied in presses, punching machines, manufacturing tools, etc., can solve problems such as difficult to obtain treatment policies, and achieve the effect of shortening inspection time, preventing motor out of control, and reducing the frequency of use

Active Publication Date: 2007-08-08
JAPAN AUTOMATIC MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 de...

Method used

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  • Servo pressing machine
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Examples

Experimental program
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Embodiment Construction

[0056] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0057] Fig. 1 is a diagram schematically showing the overall configuration of a servo press related to the first embodiment of the present invention.

[0058] Fig. 2 is an example of the main part of the control circuit of the servo press of Fig. 1.

[0059] As shown in FIG. 1, the upper part of the main body box 3 of the servo press 1 is provided with a servo motor 10 and a motion conversion mechanism 20 that transmits the rotational motion of the motor 10 and converts it into linear motion. As the servo motor 10, for example, an AC servo motor can be used. The drive current of the servo motor 10 is controlled by a servo amplifier 11 electrically connected to the motor 10.

[0060] The motion conversion mechanism 20 has a ball screw 23 screwed with a nut 21 (of course, the conversion from rotational motion to linear motion may be performed by a crank mechanism or...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B30B1/18B30B15/14B30B15/28
CPCB30B1/186
Inventor 中目优彦远藤秀树
Owner JAPAN AUTOMATIC MACHINE
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