Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine
Patent
1997-12-01
2000-06-13
Briggs, William
Metal working
Plural diverse manufacturing apparatus including means for...
Type of machine
29560, 228 48, 408238, 409231, B23Q 504, B23B 3928
Patent
active
060733225
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a boring machine for performing the boring of holes, the surfacing of weldings in said holes, the lateral levelling, siger slots and boring by means of locoidal points, in automatic or semi-automatic with one single placement.
It is already well known that the existing boring machines are rather heavy and therefore can not be moved, and therefore the pieces to be repaired must be disassembled and brought to specialized centres, with consequent heavy time and money losses.
For what concerns electric boring machines, those with continuous wire show the inconvenience that they involve the twist of the flexible tubular structure when the surfacing of the material must be performed for particular parts of the piece, e.g. inside cavities or similar, that request the rotation of the working portion of one or more complete revolutions. For avoiding such twist, which is particularly problematic when welding surfacings onto cylindric surfaces are performed, is becomes necessary to subject the piece to be treated to a continuous rotation which of course requires complex operations and special technical means, due to the difference of shape and dimension of the different pieces and to the different placement of the parts to be treated.
For overcoming said problems, devices have been realized that put the working part of the torch into rotation, providing also a rotating joint between said working part and the flexible tubular structure, so that the rotation imparted to the working part will not be transmitted to said structure.
An example of such a device has been described in European Patent no. EP 0088305, in which the use of a fix body, rigidly carried by the flexible tubular structure and operatively jointed with a rotating body, consisting of the same working part of the torch. In the bodies--fix and rotating--one or more canalizations are provided which have the function of a guide for the continuous wire and of feeding of the protective gas.
Appropriate creeping contacts provide for the necessary electric continuity between one connection conductor provided in the flexible tubular structure, and the working part of the torch, for leading tension to the welding wire.
However, it must be underlined that above described devices allow the sole performance of weldings in automtic, and disadvantageously request the replacing of the conventional welding torch with a new torch with a working part rotatingly unlinked from the flexible tubular structure.
It is the aim of the present invention to realize a universal portable boring machine, for performing boring works and the distribution of weldings in automatic and semi-automatic, outside and inside bling and passing holes with different dimensions.
The aim set forth is reached by means of a boring machine according to the present invention, that may be applied onto the piece to be bored, and that is provided for performing welding surfacings in the same point to be bored, internal or external, with a working performed in automatic or in semi-automatic, comprising: bushing that allows the rotation and the longitudinal moving of a tool head-carrying shaft, so that by means of one head having the function of tool-carrier, inserted onto the shaft during the rotation and the longitudinal moving of the same, it is possible to perform the horizontal and vertical borings, the levelling of faces and housings for sigers, in automatic or in semi-automatic, at the desired point; a handle is provided for moving the same from one work to the other in workshops or in yards; bonnet; plurality of mechanic speeds, the rotation inversion by means of an electric converter, the variation of revolutions by means of an electronic potentiometer; head-carrying tool shaft in the boring phase, with the possibility of varying the revolutions by means of an electronic potentiometer, and inverting the longitudinal moving sense of the head-carrying tol shaft by means of an electronic inverter; phase of eventual pieces to be re-treated, allowing the rotation of the torc
Briggs William
Striker Michael J.
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