Metal working – Plural diverse manufacturing apparatus including means for... – With means to feed work intermittently from one tool station...
Patent
1998-07-27
1999-10-19
Briggs, William
Metal working
Plural diverse manufacturing apparatus including means for...
With means to feed work intermittently from one tool station...
29 26A, 29 33P, 1983453, 1983461, 408 42, 409159, B23Q 705, B23C 100
Patent
active
059667982
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method and apparatus for sequentially feeding and automatically machining products having a long length. More specifically, the invention relates to a method and apparatus by which various articles, especially long products, can be automatically machined in sequence to perform cutting, boring, end-notching, welding, or other machining processes at preset sites on the product, while the product is being advanced in the longitudinal direction.
2. Discussion of the Related Art
Steel materials such as shaped steel is often used as a structural material or the like. Generally, these types of steel materials are in many cases, transported and carried in containing a length that is longer than necessary from the manufacturers. Therefore, it is common practice that the longer length steel materials are cut into necessary lengths by using torches or the like. Thereafter they are notched at their end portions of each steel piece, followed by machining processes such as boring at necessary locations.
However, since conventional approaches for machining have all been manual work, poor workability and longer working time are involved thereby increasing the cost.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a method for sequentially feeding and automatically machining long length articles or products such as shaped steel such that it is automatically fed and machined for cutting in dimensions, boring, end-processing, or other machining processes in sequence.
The method for sequentially feeding and automatically machining long length products comprises a leading-end machining step, an intermediate machining step, and a final machining step. The first and second conveyor lines each have a vise in proximity to a machining area and are provided on both sides of the machining area and so that the products are successively and automatically machined at preset sites, while being advanced on the conveyor lines by a propulsion mechanism. The leading-end machining step is a step for moving the propulsion mechanism to a preset initial position on the first conveyor line, and then transferring the product toward the propulsion mechanism located on the first conveyor line. In this state, the product is gripped by the first conveyor line vise and a leading end side of the product is cut to a specified dimension. The intermediate machining step is a step releasing the product from the vise and advancing the product to a preset distance by the propulsion mechanism against a conveying force of the first conveyor line so that the machined part of the product is fed to the second conveyor line while a to be machined target site of the product is set within the machining area. In this state, the unmachined part of the product is gripped by the first conveyor line vise and a preset machining process is carried out on the to be machined target site. Further iteration then occurs for a series of the above described operations and for a preset number of times.
The final machining step feeds the tailing end of the product into the machining area by the propulsion mechanism against a conveying force from the second conveyor line. Thereafter the product is gripped by the second conveyor line vise and with the propulsion mechanism having retreated, the apparatus carryies out a preset final machining process.
Generally, long length products are often provided in sizes a little larger than their specified dimensions. Since the product is typically advanced by referencing the tailing end of the product, this would adversely affect the advancing precision such that positioning precision for the machining target sites of the product could not be attained. Accordingly, advancing the product by referencing the leading end of the product makes it possible to set even shorter than specified product into machining positions with high precision except for the machining of the tailing end.
Accordingly, a method for sequentially feeding
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Miya Yasuhiro
Ohnishi Shinobu
Briggs William
Ohnishi Shinobu
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