Method for machining outer circumference of metal end cross-section and method for joining metal component obtained by the machining method with another member
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Jan 5, 2016
filing date -
Jan 7, 2015
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
Provided are a method for machining the outer circumference of a metal end cross-section, the method being capable of easily forming at least any of a deep groove, a deep recess, and a flange which are smooth and uniform in the longitudinal direction of a metal rod or metal pipe in the periphery of the cross-section of any of the end part of the metal rod or metal pipe, the drawn end part of the metal rod or metal pipe, and the hub hole forming part of the metal pipe; and a method for joining a metal component obtained by the machining method with another member. The machining method of the present invention is characterized in that: splitting is advanced by successively repeating press forming operation multiple times by using a slitting punch, in which a tip part has a sharp cutting edge, and the cutting edge is formed so as to have a shape equal to or partly equal to the outer shape of the cross section of a metal end part and so as to have a diameter smaller than the outer diameter of the cross section of the splitting object; and in order to control the depth of metal cracking cleft created with each press forming operation, a pressing die for pinching the outside of a metal rod or at least a pressing die of one side of pressing dies for pinching the inside and the outside of a metal pipe is disposed while its position is moved according to the distance of a split portion.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- F16L Class
- 1971 Applications Filed
- 1425 Patents Issued To-Date
- 72.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16L Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 5, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 5, 2031 |
