Universal combined milling and boring machine

#1. Field of Invention

#The invention relates to a machine tool, and more particularly to a machine tool for milling and boring workpieces.

#2. Discussion of Related Art

#The objects, features and advantages of the invention will be more clearly perceived from the following detailed description, when read in conjunction with the accompanying drawing, wherein:

#FIG. 1 is a perspective view of a universal combined milling and boring machine according to one embodiment of the invention;

#FIG. 2 shows the embodiment of FIG. 1 also having a double table;

#Referring to FIG. 1 of the drawing, the machine tool contains rigid machine frame 1 and horizontal base 3. The horizontal base provides support for work table 2. The horizontal base is preferably integrated within the machine frame. The machine frame is designed in the form of a box, open on its front side and having two vertical side walls 4 and 5, vertical rear wall 6, bottom member 7 inclined to the front bottom and on which side walls 4 and 5 and rear wall 6 border, as well as lateral top front traverse 8, which joins the uppermost parts of side walls 4 and 5 with each other. Side walls 4 and 5 have a wider bottom part, each joined by side walls 9 and 10 of base 3, a narrower central part having a vertical front face, as well as top parts 14 and 15 projecting in an inclined fashion to the front. Traverse 8 spans top parts 14 and 15.

#As evident in particular from FIG. 3, rear wall 6, which is provided with a plurality of recesses 11, has a height less than that of side walls 4 and 5. The rear wall has inclined end face 12 on which continuous guide rail 13 is fixed. Top portions 14 and 15 of the rear sides of side walls 4 and 5 are also inclined to the top front and are firmly connected with the respective ends of traverse 8. Cover elements 16 and 17 extending in the slope are provided on the inner side of each side wall 4 and 5. The top parts of the cover elements are fixed with the inner side of traverse 8. Another guide rail 20 is mounted in angular region 19 formed toward the front top by dimensionally stable continuous web 18 of traverse 8. The length of guide rail 20 is greater than free space 21 defined by two cover elements 16 and 17. Top supporting member, or slide 22, can be moved along guide rails 13 and 20. In this case, a spindle drive (ball caster spindle) serves as a drive unit for the traveling motion of the slide and consists of axis-parallel spindle 29 supported above end face 12 of rear wall 6 in two pedestals 28, and of recirculating ball nut 25 mounted on slide 22. Support 26 is mounted on the rear side of rear wall 6 for trailing cable 27. The trailing cable provides energy supply and control of the different units supported by slide 22.

#In the embodiments shown in FIGS. 1 and 3, work table 2, shown as a revolving table, is arranged on base 3 so as to protrude to the front beyond the front edge of side walls 4 and 5. The work table is surrounded, at least in its rear part, by a trough-shaped chip collector that is defined, at least partially by inclined bottom member 7. Connecting tubes 30 and 31, which are shown as exiting right defining wall 10 of the base, conduct removal of the liquids and chips.