Method of attaching guideways to a machine tool bed

DETAILED DESCRIPTION OF THE INVENTION FIGS.
1, 2 and 3 illustrate views of a fixture for precisely orienting guideways with respect to each other and onto a bed of a machine tool.
FIGS.
4 and 5 illustrate the guideways bonded to the machine tool base.
Referring now to the drawings, FIG.
1 illustrates the fixture 50 which comprises a frame 51 having a bottom portion 51a, a side portion 51b, and a plurality of adjustable legs 52 mounted to the bottom portion 51a of the frame 51.
Each of the legs 52 includes a threaded shaft so that adjustment of a nut will shorten and lengthen the height of a leg 52.
Threaded bolts 60 releasably attach a vertical guideway 10 to the side portion 51b of the frame 51 and two horizontal guideways 20 and 30 to the bottom portion 51a of the frame 51.
The legs 52 of the fixture 50 are adjustable to position the lower surfaces 21, 31 of the horizontal guideways 20, 30 in spaced relationship to the machine tool bed 40.
The spaces 1, 2, 3 between the guideways 10, 20, 30 and the machine tool bed 40 are for receiving a material to bond the guideways 10, 20, 30 to the bed 40.
To increase the shear strength of the guideway 10, in the vertical plane, after it is bonded to the base 40, a plurality of bolts 80, located along a horizontal axis, extend through the guideway 10 and screw into the machine tool bed 40.
Additionally, shear pins may be used.
The fixture 50 is fabricated with great precision and care so that it can be used repeatedly and quickly to precisely locate and mount guideways 10, 20, 30 in a predetermined relationship to each other on the bed 40 of a machine tool.
The fixture 50 may, of course, be used to locate one, two or three guideways.
FIG.
2 is a rear view of the fixture 50 that illustrates that there are three adjustable legs 52 to adjust the level of the frame 51 and hence the guideways 10, 20, 30 attached to the frame 51.
FIG.
3 is a top view of the fixture 50 that illustrates the location of leveling devices 53, which are used in conjunction with the legs (52, FIGS