System for automatically correcting position of slide in press
AssigneeFukui Machinery Co. Ltd
InventorsNorio Hatanaka, Tsutae Hata, Yoshio Oketani, Eiji Kimura
Life of this patent
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Abstract
A system for automatically correcting the position of the slide of a press comprises a position adjusting assembly for adjusting the up-down relative position relationship between the slide and a bolster while the press is in operation, a distance detecting unit for directly or indirectly detecting the relative distance between the bolster and the slide at the bottom dead center, and a control unit for controlling the position adjusting assembly based on the output of the distance detecting unit so that the relative distance between the bolster and the slide at the bottom dead center will be within a predetermined range during the operation of the press.
Claims17
A system for automatically correcting the position of a slide assembly relative to a bolster assembly of a press, comprising a position adjusting assembly mounted on one of said slide and bolster assemblies for adjusting the up-down relative position relationship between the slide assembly and a bolster assembly while the press is in operation, a distance detecting unit mounted on the other of said slide and bolster assemblies for detecting the relative distance between the bolster and the slide at the bottom dead center, and a control unit operatively connected to said position adjusting assembly and said distance detecting unit for controlling the position adjusting assembly based on the output of the distance detecting unit so that the relative distance between the bolster assembly and the slide assembly at the bottom dead center will be within a predetermined range during the operation of the press.
A system for automatically correcting the position of the slide of a press by sensing temperature of the drive assembly of the slide, comprising a position adjusting assembly mounted on said slide for adjusting the up-down relative position relationship between the slide and bolster, a temperature detecting unit mounted on said drive assembly for detecting the temperature of the drive assembly while the slide is at rest, and a control unit operatively connected to said position adjusting assembly and said temperature detecting unit for controlling the position adjusting assembly based on the output of the temperature detecting unit while the slide is at rest for positioning the top dead center of the slide within a predetermined range.
A system for automatically correcting the position of the slide relative to a bolster of a press and by sensing the temperature of the drive assembly of the slide, comprising a position adjusting assembly mounted on said slide for adjusting the up-down relative position relationship between the slide and a bolster while the press is in operation, a distance detecting unit mounted on said drive assembly for detecting the relative position between the bolster and the slide at the bottom dead center, a temperature detecting unit mounted on said drive assembly for detecting the temperature of the drive assembly for the slide at rest, and a control unit operatively connected to said position adjusting assembly, said distance detecting unit, and said temperature detecting unit for controlling the position adjusting assembly based on the output of the distance detecting unit while the press is in operation so that the relative distance between the bolster and the slide at the bottom dead center will be within a predetermined range, the control unit further being adapted to control the position adjusting assembly based on the output of the temperature detecting unit while the slide is at rest so that the position of the top dead center of the slide will be within a predetermined range.
Dependencies are inferred from the claim text.