| 摘要 |
<p>In the present invention, a two-stage integral epitrochoidal cyclic rotor (9) is produced by a machining method which produces the desired tolerances in both stages of the rotor without removing the work-piece from the support (22) that holds it throughout the manufacturing process. In the manufacturing process, the blank starting work-piece (9a), which is preferably a circular disc, is secured to a support element (22), for example by a magnetic chuck (22). The overall outer surface (32) of the work-piece (9a) is then rotated and orbited while it is accurately machined to produce the epitrochoidal contour of the first stage of the rotor (9). Then, without releasing the work-piece (9) from the holding surface (22), a second accurate machining operation, again with rotation and orbiting, is carried out on the upper half of the work-piece (9a) to form the epitrochoidal contour of the second stage of rotor (9). This arrangement provides an inexpensive method for making a two-stage integral epitrochoidal cyclic rotor (9) in which the required precision of each contour is obtained while the tolerances between the epitrochoidal surfaces of the two stages are achieved and maintained. An epicyclic drive using the two-stage integral epitrochoidal cyclic rotor is also disclosed.</p> |
