Abstract: A coaxial shaft and housing assembly is adapted to be locked against relative rotation. It comprises a housing or hollow motor shaft (2) having a threaded internal cylindrical surface (5) of a first pitch (m), and a coaxial shaft (10) received in the housing (2) and having an intermediate threaded external portion (10') of the same pitch (m). A plurality of stud pins (7), externally threaded with the same first pitch (m) are positioned between the shaft (10) and the internal surface (5) of the housing (2), which stud pins are in meshing engagement both with the portion (10') of the shaft (10) and the surface (5) of the housing (2). The stud pins (7) are freely rotatably mounted in a carriage (9) mounted for axial translation between the inside of the housing (2) and the shaft (10).

Abstract: An electric arbor integrated with an induction motor (2), for frequencies up to and beyond 3000 Hz, is made up of a sleeve (3), made of two coaxial tubular parts (3' and 4") finished at the same time, assuring the identical distance (3"') achieving extreme precision of the arbor (1). The arbor shaft (23), supported by bearings (6, 6' and 6") is inserted into the sleeve (3). To the back end of the sleeve (3) is fastened the motor (2), whose stator core stack (4) is made with thin laminations and into said stator (4) is introduced insulating resin charged with substances improving the thermal conductivity. The rotor (5), mounted cantilevered on the arbor shaft (23), is made of thin condutive laminations, fastened by the damping resin, which, melted on the ends, form the short-circuit rings contained by the rings.

Abstract: The process comprises the sequence of the following operations:(a) joining (3) of different elementary staples, each formed by a group of continuous or staple fibers to form a single staple;(b) possible twisting in one direction or the other with different angle of twist of said single twisted staple;(c) setting of the degree of moisture of said single staple (5) at the preestablished value;(d) resining of said moistened twisted single staple (6) with penetration of the resin to the value preselected for final use;(e) polymerization of said resined staple (7) with supply of heat to the values preset as a function of final use;(f) cooling of yarn (8) to store the condition of straightness in the capillary yarn thus obtained;(g) rewinding of the polymerized and cooled yarn (9) on a reel with orderly turns;(h) finishing of the outside surface of the yarn (FIG. 2) by removal of material, defining geometric shape and dimensions with high precision;(i) cutting of the finished yarn (FIG.

Abstract: An electric arbor integrated (FIG. 1) with an induction motor (2), for frequencies up to and beyond 3000 Hz, is made up of a sleeve (3), having two coaxial tubular parts (3' and 3") finished at the same time, assuring the identical distance (3"') achieving extreme precision of the arbor (1). The arbor shaft (23), supported by bearings (6, 6' and 6") is inserted into the sleeve (3). To the back end of the sleeve (3) is fastened the motor (2), whose stator core stack (4) is made with thin laminations (FIG. 6) and into said stator (4) is introduced insulating resin charged with substances improving the thermal conductivity. The rotor (5), mounted cantilevered on the arbor shaft (23), is made of thin conductive laminations, fastened by the damping resin, which, melted on the ends, forms the short-circuit rings contained by the rings.

Abstract: In its simplest form, the automatic transmission machine under discussion, with electronically controllable intermittently rotating table (FIG. 1), is made up of an annular base support (1) consisting of two half-plates (1' and 1") on whose opposite external surface are fastened, on radial axes, operating units (6, 11, etc.) achieving a notable plurality of axes, and containing guide elements (2 and 4) of a ring (3) holding collet-holding table (24), achieving the extreme precision and rigidity of the table itself which is rapidly substitutable by another one with different functions or dimensions, making possible great versatility, being able to have collets (23) as fixed axes, orientable or dynamic and placed axially or radially or both.