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AssigneeFuji Seiko Co., Ltd.
InventorsHajime Mizutani, Yoshihiro Takasu, Eiji Goto, Katsumi Isogai, Yoshikazu Satow
Estimating the term…
A method of controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool. The method includes a step of bringing the cutting blade and an object into contact with each other, by moving at least one of the cutting blade and the object toward each other by the movement device, and a step of controlling the relative movement on the basis of a relative position of the cutting blade and the object which is detected by the movement device upon the contact of the cutting blade and the object with each other. The method further includes a checking step of checking if a contact detecting device for detecting the contact of the cutting blade and the object is in a normal condition in which the contact detecting device is capable of detecting the contact when the cutting blade and the object are brought into contact with each other; and a contact determining step of determining that the cutting blade and the object have been brought into contact with each other, in accordance with an output provided by the contact detecting device.
A method of controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool, said method comprising a step of bringing said cutting blade and an object into contact with each other, by moving at least one of said cutting blade and said object toward each other by said movement device, and a step of controlling said relative movement on the basis of a relative position of said cutting blade and said object which is detected by wherein said movement device upon said contact of said cutting blade and said object with each other, said object consists of said workpiece which is fixed to said machine tool, said method further comprising:
An apparatus for controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool, said apparatus controlling said relative movement on the basis of a relative position of said cutting blade and an object which is detected by said movement device when said cutting blade and said object are brought into contact with each other as a result of a relative movement of said cutting blade and said object which is made by said movement device, said apparatus comprising:
A method of detecting contact and separation of a cutting blade held by a blade holding member, with and from an object, on the basis of a change of a state of an electric circuit which is changed depending upon whether said cutting blade is in contact with said object or is separated from said object, said method comprising:
A cutting blade which is removably held by a blade holding member, for thereby cutting a workpiece, said cutting blade being covered at at least a portion of a surface thereof with a conductive coating having an electrical conductivity.
A master workpiece which is to be held by a workpiece holding device serving for holding a workpiece to be cut by a cutting blade, and which is to be brought into contact with said cutting blade, said master workpiece having a known dimension and covered at a surface thereof with a conductive coating which has an electrical conductivity.
A conductive sheet consisting of a sheet member which is made a material having an electrical conductivity.
Dependencies are inferred from the claim text.