Press line, press forming condition calculation method, and press forming condition calculation program

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure information on the metal material during or after the press forming;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of a forming defect for a subsequent metal material by inputting information on the metal material during or after the press forming measured by the measurement instrument to a machine learning model that uses, as input, the information on the metal material during or after the press forming and uses, as output, a press forming condition of the metal material for inhibiting the occurrence of a forming defect, and perform feedback control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure a residual magnetic field of the metal material before shearing performed by the first press machine and/or a shear load of the metal material during the shearing performed by the first press machine;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of cracking for a metal material to be formed by inputting the residual magnetic field of the metal material before the shearing performed by the first press machine and/or the shear load of the metal material during the shearing performed by the first press machine, which has been measured by the measurement instrument, and manufacturing information of the metal material to a machine learning model that uses, as input, the residual magnetic field of the metal material before the shearing performed by the first press machine and/or the shear load of the metal material during the shearing performed by the first press machine and the manufacturing information of the metal material and uses, as output, the press forming condition of the metal material for inhibiting occurrence of cracking of the metal material, and perform feedforward control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure information on the metal material during or after the press forming;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of cracking of a subsequent metal material by inputting information on the metal material during or after the press forming measured by the measurement instrument to a machine learning model that uses, as input, the information on the metal material during or after the press forming and uses, as output, a press forming condition of the metal material for inhibiting the occurrence of cracking of the metal material, and perform feedback control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure a residual magnetic field of the metal material before shearing performed by the first press machine and/or a shear load of the metal material during the shearing performed by the first press machine;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of a wrinkle for a metal material to be formed by inputting the residual magnetic field of the metal material before the shearing performed by the first press machine and/or the shear load of the metal material during the shearing performed by the first press machine, which has been measured by the measurement instrument, and manufacturing information of the metal material to a machine learning model that uses, as input, the residual magnetic field of the metal material before the shearing performed by the first press machine and/or the shear load of the metal material during the shearing performed by the first press machine and the manufacturing information of the metal material and uses, as output, the press forming condition of the metal material for inhibiting occurrence of a wrinkle of the metal material, and perform feedforward control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure information on the metal material during or after the press forming;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of a wrinkle of a subsequent metal material by inputting information on the metal material during or after the press forming measured by the measurement instrument to a machine learning model that uses, as input, the information on the metal material during or after the press forming and uses, as output, a press forming condition of the metal material for inhibiting the occurrence of a wrinkle of the metal material, and perform feedback control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure at least one of a residual magnetic field of the metal material before shearing performed by the first press machine, a shear load of the metal material during the shearing performed by the first press machine, a shape of the metal material before the shearing performed by the second press machine, and an arrangement position of the metal material to the forming die;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of a dimensional accuracy defect of the press-formed component for a metal material to be formed by inputting at least one of the residual magnetic field of the metal material before the shearing performed by the first press machine, the shear load of the metal material during the shearing performed by the first press machine, the shape of the metal material before the shearing performed by the second press machine, and the arrangement position of the metal material to the forming die, which have been measured by the measurement instrument, and manufacturing information of the metal material to a machine learning model that uses, as input, at least one of the residual magnetic field of the metal material before shearing performed by the first press machine, the shear load of the metal material during the shearing performed by the first press machine, the shape of the metal material before the shearing performed by the second press machine, and the arrangement position of the metal material to the forming die and the manufacturing information of the metal material and uses, as output, the press forming condition of the metal material for inhibiting the occurrence of a dimensional accuracy defect of the press-formed component, and perform feedforward control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure information on a shape of the press-formed component;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of a dimensional accuracy defect of a press-formed component for a subsequent metal material by inputting information on the shape of the press-formed component measured by the measurement instrument to a machine learning model that uses, as input, the information on the shape of the press-formed component and uses, as output, a press forming condition of the metal material for inhibiting the occurrence of the dimensional accuracy defect of the press-formed component, and perform feedback control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press line comprising:

• a first press machine configured to shear an outer peripheral portion of a metal material by using a blanking die;
• a second press machine configured to form a press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die;
• a preprocessing device provided on a downstream side of the first press machine and configured to perform predetermined preprocessing on the metal material;
• a measurement instrument configured to measure information on the metal material during or after the press forming;
• and a control device configured to calculate a press forming condition for inhibiting occurrence of die damage and a surface quality defect of the press-formed component caused by the die damage for a subsequent metal material by inputting information on the metal material during or after the press forming measured by the measurement instrument to a machine learning model that uses, as input, the information on the metal material during or after the press forming and uses, as output, a press forming condition of the metal material for inhibiting the occurrence of die damage and a surface quality defect of the press-formed component caused by the die damage, and perform feedback control on at least one of the second press machine and the preprocessing device under the calculated press forming condition.

A press forming condition calculation method comprising a step of calculating a press forming condition for inhibiting occurrence of a dimensional accuracy defect of a press-formed component for a metal material to be formed by inputting at least one of a residual magnetic field of the metal material before shearing performed by a first press machine configured to shear an outer peripheral portion of the metal material by using a blanking die, a shear load of the metal material during the shearing performed by the first press machine, a shape of the metal material before shearing performed by a second press machine configured to form the press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die, and an arrangement position of the metal material to the forming die and manufacturing information of the metal material to a machine learning model that uses, as input, at least one of the residual magnetic field of the metal material before the shearing performed by the first press machine, the shear load of the metal material during the shearing performed by the first press machine, the shape of the metal material before the shearing performed by the second press machine, and the arrangement position of the metal material to the forming die and the manufacturing information of the metal material and uses, as output, the press forming condition of the metal material for inhibiting the occurrence of the dimensional accuracy defect of the press-formed component.

A non-transitory computer-readable recording medium on which an executable program for calculating a press forming condition, the program causing a processor of a computer to execute

• calculating a press forming condition for inhibiting occurrence of a dimensional accuracy defect of a press-formed component for a metal material to be formed by inputting at least one of a residual magnetic field of the metal material before shearing performed by a first press machine configured to shear an outer peripheral portion of the metal material by using a blanking die, a shear load of the metal material during the shearing performed by the first press machine, a shape of the metal material before shearing performed by a second press machine configured to form the press-formed component by performing press forming on the metal material sheared by the first press machine with a forming die, and an arrangement position of the metal material to the forming die and manufacturing information of the metal material to a machine learning model that uses, as input, at least one of the residual magnetic field of the metal material before the shearing performed by the first press machine, the shear load of the metal material during the shearing performed by the first press machine, the shape of the metal material before the shearing performed by the second press machine, and the arrangement position of the metal material to the forming die and the manufacturing information of the metal material and uses, as output, the press forming condition of the metal material for inhibiting the occurrence of the dimensional accuracy defect of the press-formed component.