Method for making a pneumatic ground piercing tool

Details Method for making a pneumatic ground piercing tool Method for making a pneumatic ground piercing tool

1994-09-29

1995-08-15

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29517, B23P 1100

Patent

active

054407974

ABSTRACT:
In a method for making a self-propelled impact boring tool, the tool body is formed by swaging a steel tube to form the tapered nose of the tool. This results in less wasted steel as compared to conventional machining of a solid steel bar to form the body, which is the largest single part of the tool. The tool body may then be fitted with a tool anvil of slightly different dimensions than the forming anvil used during swaging to provide an interference fit.

REFERENCES:
patent: 2309181 (1943-01-01), Franck
patent: 3327513 (1967-06-01), Hinshaw
patent: 3410354 (1968-11-01), Sudnishnikov et al.
patent: 3754429 (1973-08-01), Creuzet
patent: 3756328 (1973-09-01), Sudnishnikov et al.
patent: 4078619 (1978-03-01), Sudnishnikov et al.
patent: 4261193 (1981-04-01), Boik
patent: 4662457 (1987-05-01), Bouplon
"Automated Swaging Beats Waste", Machine and Tool Blue Book, Bella, Jun. 1988, pp. 46, 47 and 48.
"Materials and Processes in Manufacturing", DeGarmo, 1979, pp. 375, 392 and 393.

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