Closing method and closing machine
First Claim
1. A closing method for closing an open end of a tubular work piece by holding the work piece by an outer diameter chuck, rotating the outer diameter chuck together with the work piece, and pressing a die against the work piece rotating about an axial center, comprising:
- positioning the work piece in a predetermined position using a retractable introduction stopper which protects onto an introduction path from the predetermined position towards a position in which the outer diameter chuck holds the work piece;
gripping an inner peripheral surface of the work piece by an inner diameter chuck in the predetermined position;
moving the inner diameter chuck by a work piece introducing device along the introduction path from the predetermined position towards the position in which the outer diameter chuck holds the work piece, in a state where the inner peripheral surface of the work piece is gripped by the inner diameter chuck and the retractable introduction stopper is retracted from the introduction path.
2 Assignments
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Accused Products
Abstract
In a closing machine (1), an inner diameter chuck (8) that grips an inner peripheral surface of a work piece (9), a work piece (9) introducing device that moves the inner diameter chuck (8) in a Y axis direction of the work piece (9), and an introduction stopper (12) that projects onto an introduction path of the work piece (9) are used in such a manner that the inner diameter chuck (8) grips the inner peripheral surface of the work piece (9) while the work piece (9) abuts against the introduction stopper (12), the introduction stopper (12) is removed from the introduction path of the work piece (9), and the work piece (9) is introduced into an outer diameter chuck (7) by moving the inner diameter chuck (8) in the Y axis direction of the work piece (9).
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Citations
5 Claims
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1. A closing method for closing an open end of a tubular work piece by holding the work piece by an outer diameter chuck, rotating the outer diameter chuck together with the work piece, and pressing a die against the work piece rotating about an axial center, comprising:
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positioning the work piece in a predetermined position using a retractable introduction stopper which protects onto an introduction path from the predetermined position towards a position in which the outer diameter chuck holds the work piece; gripping an inner peripheral surface of the work piece by an inner diameter chuck in the predetermined position; moving the inner diameter chuck by a work piece introducing device along the introduction path from the predetermined position towards the position in which the outer diameter chuck holds the work piece, in a state where the inner peripheral surface of the work piece is gripped by the inner diameter chuck and the retractable introduction stopper is retracted from the introduction path.
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2. A closing machine for closing an open end of a tubular work piece by holding the work piece by an outer diameter chuck, rotating the outer diameter chuck together with the work piece, and pressing a die against the work piece rotating about an axial center, comprising:
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a retractable introduction stopper which positions the work piece in a predetermined position by projecting onto an introduction path from the predetermined position towards a position in which the outer diameter chuck holds the work piece; an inner diameter chuck that grips an inner peripheral surface of the work piece in the predetermined position; a work piece introducing device that moves the inner diameter chuck along the introduction path from the predetermined position towards the position in which the outer diameter chuck holds the work piece, in a state where the inner peripheral surface of the work piece is gripped by the inner diameter chuck and the retractable introduction stopper is retracted from the introduction path. - View Dependent Claims (3, 4, 5)
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Specification