Cutting by use of rotating axially moving tool – Tool-support
Patent
1982-05-04
1985-02-19
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
Tool-support
408234, 403379, 403408, 269 43, 269 481, B23B 3900
Patent
active
045002355
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention is related to a coupling comprising a female and a male member having co-operating wedge surfaces, which are movable into and out of contact with each other by generally axial relative movement of the members, said coupling comprising means to urge the wedge surfaces into intimate contact with each other upon tightening of the coupling.
Such a coupling is advantageous for erecting guides for boring machines.
BACKGROUND OF THE INVENTION
Such a coupling is disclosed in the Swedish patent No. 157 300 and comprises a pre-tensioned spring, which only has the purpose to maintain the connection should the tightening means formed by an eccentric be undeliberately released. When the locking by the eccentric is correct, the spring has no function. The tension of the spring is reduced on tightening of the coupling.
SUMMARY OF THE INVENTION
The object of the invention is to improve this coupling so that the spring always will have a certain influence on the maintaining of the tightened state of the coupling. This object is obtained in that the spring is adapted, upon tightening of the coupling, to accumulate spring force urging the wedge surfaces of the members towards each other. Thus, the tensioning means and the spring will act in "series" so that the tightening will give rise to the spring force. According to the Swedish patent, the tightening means and the spring function in parallel.
Other preferable features of the invention are defined in the appendant claims.
BRIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, a specific disclosure of a preferred embodiment will follow hereinafter.
In the drawings:
FIG. 1 is a perspective, partly simplified view of the boring assembly according to the invention;
FIG. 2 is an enlarged section through a feed member of the assembly, a column and a boring machine member being illustrated partly cut;
FIG. 3 is a section through a coupling between two members, which together form the column of the boring assembly; and
FIG. 4 is a section IV--IV in FIG. 3.
BEST MODE OF CARRYING OUT THE INVENTION
The boring assembly illustrated in FIG. 1 includes a bottom plate 1, a column 2, a boring tool 3, a boring machine member 4, which drives the tool, and a feed member 5, on which the boring machine member 4 is mounted.
The bottom plate 1 may in practice be constructed from aluminium alloy and may, at its lower side, have a conventional endless sealing ring, which confines a space from which the air may be evacuated so as to obtain a vacuum by means of which the plate is adhered to and rigidly anchored relative to the ground, e.g. a floor.
The column 2 is connected to bottom plate 1 through a connection 6 of conical type, which allows rotation of column 2 relative to the bottom plate as indicated by the dashed lines in the figure. More specifically, the connection 6 comprises two halves 7 and 8, the first-mentioned half 7 being rigidly connected to bottom plate 1 through a socket 9 and comprising a conical female recess (not visible) in which a male projection, which in a corresponding manner is conical, on the half 8 is introduced, the half 8 being in turn rigidly connected to a hollow shaft portion 10 projecting sidewardly and attached to the lower portion 11 of the column. A tightening bolt 12 extends through the center of the shaft 10 and is threadedly connected to the female connection half 7. By tightening bolt 12, the conical surfaces of halves 7, 8 are moved into contact while obtaining a frictional connection between the column and bottom plate. By releasing bolt 12, column 2 will be free to pivot into any inclined position relative to the bottom plate and thereafter, the column may be fixed in said position by tightening bolt 12.
The column 2 may, as mentioned, be assembled by several elements, two of which are illustrated in FIG. 1, namely elements 13, 14. These elements are identically designed except that their length differs. Thus, each element is prepared from a rectangular tube having comparatively large wall thi
REFERENCES:
patent: 3301108 (1967-01-01), Heiner
patent: 3387865 (1968-06-01), Ross
patent: 3576336 (1971-04-01), Uhlig
Bilinsky Z. R.
Brown Charles E.
Howell Daniel W.
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