Method for a pouring control and a storage medium for storing programs for causing a computer to work as a pouring control means

• US 9,950,364 B2
• Filed: 02/22/2013
• Issued: 04/24/2018
• Est. Priority Date: 03/12/2012
• Status: Active Grant

• Current Assignee: National University Corporation Toyohashi University Of Technology, Sintokogio Limited
• Original Assignee: National University Corporation Toyohashi University Of Technology, Sintokogio Limited
• Inventors: Suzuki, Makio, Terashima, Kazuhiko, Ito, Atsushi, Noda, Yoshiyuki
• Primary Examiner(s): Kastler, Scott
• Assistant Examiner(s): Aboagye, Michael
• Application Number:
  US14/369,836
• Publication Number:
  US 20150000860A1
• Time in Patent Office: 1,887 Days
• Field of Search: 222590, 222591, 222604, 164457, 1641551, 266236, 266 99
• CPC Class Codes: B22D 37/00 Controlling or regulating the pouring of molten metal from a casting melt-holding vessel B22D11/18, B22D39/00, B22D41/00 take precedence
• CPC Class Codes: B22D 41/04 tiltable
• CPC Class Codes: B22D 41/06 Equipment for tilting
• CPC Class Codes: B22D 46/00 Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons controlling or regulating in general G05

Abstract

[Problem to Be Solved] A pouring control method for controlling an automatic pouring device with a tilting-type ladle is provided. By the method, a lip of a pouring ladle approaches a sprue of a mold without striking any object located within the range of its movement. Also, by the method, the molten metal that runs out of the ladle can accurately fill the mold. [Solution] The pouring control method comprises the steps of setting a target flow rate of molten metal to be poured, generating a voltage to input it to a motor that tilts the ladle (hereafter, the tilting motor) so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and an inverse model of the tilting motor, estimating the flow rate of the molten metal that runs out of the ladle, estimating the falling position and getting the estimated falling position to be a target position, and generating a trajectory for the movement of the pouring ladle wherein the trajectory causes the height of the lip of the pouring ladle above the level of a sprue of a mold to decrease.

Claims

1. A non-transitory computer readable medium that is readable by a computer in which a program is stored, wherein the program causes the computer to carry out pouring control processes for an automatic pouring device with a tilting-type pouring ladle that control movement of the ladle in back and forth and up and down directions, and also control its tilting, wherein the processes comprise

setting a target flow rate of molten metal to be poured, generating a voltage to be input to a tilting motor so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and an inverse model of the tilting motor,

estimating the flow rate of the molten metal that runs out of the ladle, estimating a falling position of the molten metal and getting the falling position to be a target position, and generating a trajectory for the movement of the pouring ladle wherein the trajectory causes the height of the lip of the pouring ladle above the level of a sprue of a mold to decrease and causes the ladle not to strike any object located within the range of its movement.

2. A non-transitory computer readable medium that is readable by a computer in which a program is stored, wherein the program causes the computer to carry out pouring control processes for an automatic pouring device with a tilting-type pouring ladle that control movement of the ladle in back and forth and up and down directions, and also control its tilting, wherein the processes comprise

setting a target flow rate of molten metal to be poured,

generating a voltage to be input to a tilting motor so as to reach the target flow rate of the molten metal based on an inverse model of a mathematical model of molten metal that runs out of a pouring ladle and based on an inverse model of the tilting motor,

estimating the flow rate of the molten metal that runs out of the ladle,

estimating a falling position of the molten metal and getting the falling position to be a target position, setting a hypothetical axis at the lip of the ladle, and generating a second trajectory for the movement of the pouring ladle wherein the trajectory causes the ladle not to strike any object located within the range of its movement and minimizes the height of the lip of the pouring ladle above the level of a sprue of a mold.