Pipe end machining unit

Details Pipe end machining unit Pipe end machining unit

1999-04-13

2001-01-23

Tsai, Henry W. H. (Department: 3722)

Turning

Portable lathe for pipe turning

C082S128000, C082S158000

Reexamination Certificate

active

06176163

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a pipe end machining unit having a housing which surrounds a motor and gear box arrangement, a clamping device for firmly clamping a pipe, and a tool support for a machining tool.
Mobile, preferably portable, pipe end machining units of the type under discussion here are used for metal-cutting machining of pipe ends as a preparatory step for welding or other processing operations. In this case, electrically or pneumatically driven units are used, depending on the prevailing conditions.
It would thus be desirable if the respective unit could be easily and quickly adapted to meet appropriate conditions rather than having to provide a pipe end machining unit for each of the two operational situations.
The object of the invention is thus to improve the pipe end machining unit of the type mentioned in the precharacterizing clause of claim
1
, in such a manner that the fundamental design of the unit is the same for both drive versions, and in such a manner that the unit can be changed from one drive to the other with little effort.
SUMMARY OF THE INVENTION
This object is achieved by the features of the present invention wherein the housing (
2
) is designed in two parts, with the first housing part (
2
a
) being designed to support the clamping device (
13
) and the tool support (
9
), and with the second housing part (
2
b
) being of modular design and accommodating at least those components (
18
;
30
) which are relevant for controlling the motor.
By means of a pipe end machining unit having a housing which is designed in two parts, whose first housing part is designed to support the clamping device and the tool support and whose second housing part is of modular design and accommodates at least the components which are relevant for controlling the motor, the unit on the one hand offers advantages from the manufacturing point of view, since the first housing part can be designed in a standard manner for both drive versions, with the majority of the components. On the other hand, this allows conversion from an electrical drive to a pneumatic drive, and vice versa, in a simple manner and within a very short time.


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