| 摘要 |
<p>The method produces the guide bores for the close-fitting supporting bolts of a mounting for a component round on the outside, partic. the guide vane mounting for a gas or steam turbine, the bolts radiating at regular intervals and fitting in bores in the housing. The mounting is axially located by a stop face bearing against a mating one on the housing. A peripheral datum face (9) of constant dia. is turned on the outside of the blank (1) to accommodate an annular jig (2). This has an ID corresponding to the datum face dia., and apertures (6) accommodating drill bushes (4) of dia. greater than the external bush dia. These apertures are at the same distance from the axial stop face (18) on the jig working against that (8') on the blank as are the drillings (5) in the latter from its stop face. The jig is aligned and fixed in position on the datum face (9) by means of bolts (3) inserted in the drillings (5) in the blank. The drill bushes are then fitted over the bolts and in the jig apertures, and permanently secured in the latter by pouring in hardening synthetic resin.</p> |
