Metal working – Plural diverse manufacturing apparatus including means for... – Common reciprocating support for spaced tools
Patent
1990-01-09
1991-10-22
Howell, Daniel W.
Metal working
Plural diverse manufacturing apparatus including means for...
Common reciprocating support for spaced tools
29 27R, 29 27C, 408 24, 409231, B23Q 3155, B23B 322
Patent
active
050582615
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a machine tool for performing multiple processing operations on a workpiece.
For example, consider the case where an outer surface of a cylindrical workpiece is turned and then a hole is bored in the workpiece. First, in order to have these operations done on the workpiece, the workpiece is loaded in a chuck of a lathe and then turned by a turning tool bit. Then, it is removed from the lathe and set onto a boring machine to perform a boring operation by a drill. As a consequence, much time is wasted loading and removing the workpiece and it is also difficult to maintain high quality processing requirements.
SUMMARY OF THE INVENTION
This invention relates to a machine tool which can perform multiple processing operations on the workpiece once the workpiece is loaded onto the machine tool.
Referring to FIG. 1, a workhead 4 has a spindle 16. A workpiece is detachably attached to the spindle 16. A toolhead 5 has a spindle 42. A tool bit is detachably attached to the spindle 42. A machine tool body 1 has the workhead 4 and the toolhead 5. A first indexing means 6 is designed to index the axis of the spindle 16 of the workhead 4 with respect to the axis of the spindle 42 of the toolhead 5. A first driving means 7 can continuously rotate the spindle 16 of the workhead 4 in the first direction A. A second indexing means 8 indexes the spindle 16 of the workhead 4 in the first direction A. A first stopping means 9 can stop rotation of the spindle 16 of the workhead 4 if necessary. A second driving means 10 can rotate the spindle 42 of the toolhead 5.
A second stopping means 11 can stop rotation of the spindle 42 of the toolhead 5 if necessary. Driving systems 12, 13 are provided on the body 1 and make it possible to move the workhead 4 and the toolhead 5 relative to each other in a three dimensional manner. Consider the case where multiple processing operations such as turning and boring operations on the workpiece W are done. In this instance, the work can be carried out without removing the workpiece W from the workhead 4.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing an embodiment of a machine tool according to this invention.
FIG. 2 shows the internal structure of the workhead.
FIGS. 3 and 4 show sections of the toolhead.
FIG. 5 shows a control system.
FIGS. 6, 7 and 8 show steps in processing the workpiece.
FIGS. 9, 10, 11, and 12 show a variety of sample operations carried out on the workpieces.
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIG. 1, a machine tool according to this invention has a body 1, a workhead 4, a toolhead 5, a first indexing means 6, a first driving means 7, a second indexing means 8, a first stopping means 9, a second driving means 10, a second stopping means 11, and driving systems 12, 13.
Body 1
The body 1 of FIG. 1 comprises a bed 2 and a column 3.
Workhead 4
Referring to FIGS. 1 and 2, a casing 15 of the workhead 4 is provided with the first driving means 7, the second indexing means 8 and the first stopping means 9.
A spindle 16 is rotatably supported by a casing 15 through bearings 17 to 19. A workholder 20 is detachably attached to the spindle 16 in the conventional collet-chuck manner. A tapered portion 21 of the workholder 20 is designed to fit into a hole 22 of the spindle 16.
A rod 24 of a hydraulic system 23 can be moved in the direction of an arrow e. While doing this, the tapered portion 21 of the workholder 20 can be inserted into the hole 22. The tapered portion 21 can be also removed from the hole 22 by moving the rod 24 in the direction of an arrow f.
The stopping means 9 is located around the other end of the spindle 16. The first stopping means 9 comprises a hydraulic brake equipment 25 and a rotor 26. The hydraulic brake equipment 25 is placed in the casing 15. The rotor 26 is fixed to the other end of the spindle 16. Rotation of the rotor 26, that is, rotation of the spindle 16, can be stopped if necessary by the hydraulic brake equipment 25.
The first driving means 7
REFERENCES:
patent: 3267550 (1966-08-01), Whittum et al.
patent: 3483767 (1969-12-01), Schachte
patent: 3803680 (1974-04-01), Kuhnert
patent: 4304513 (1981-12-01), Roch
patent: 4730373 (1988-03-01), Senoh
patent: 4777713 (1988-10-01), Kitamura
patent: 4809422 (1989-03-01), Kitamura
patent: 4840095 (1989-06-01), Nussbaumer et al.
Howell Daniel W.
Kananen Ronald P.
Kitamura Machinery Co. Ltd.
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