摘要:
The device for feeding a fluid to a rotating machine part (6), in particular a machine tool spindle, has a housing (1) arranged to be fixed against rotation and a hollow shaft (2) mounted rotatably therein, one end of which, the inner end (2a) is connected by way of a sliding ring seal (5) to an inlet duct (4) in the housing (1). At the other, the outer, end (2b) of the hollow shaft (2, 2') there is provided a coupling tube (7, 7') coaxial with the hollow shaft and which is axially slidable with respect to the rotating machine part (6) and can be engaged with it with a sealing arrangement (8) interposed.
摘要:
A coupling system between a tool system module, such as, for example, a tool receptacle, and a machine tool, such as, for example, a spindle. In order to provide for rapid initiation and release of the connection between these components while making large axial forces available, this incorporates a clamping system with an operating rod, by means of which a wedge drive is controlled, with which clamping elements that are provided in one of the parts that are to be coupled can be forced essentially radially outwards into suitably configured recesses in the other part that is to be coupled. The clamping elements are formed from at least three clamp-like clamping claws that are arranged at equal angular intervals from each other, these being arranged essentially parallel to a centering extension of the tool receptacle; while being supported in a centering recess of the spindle a claw section of these clamping claws that in the coupled state lies radially within the centering extension these can be pivoted into a groove-like recess of the centering extension. This coupling system is distinguished by great flexibility with regard to potential use and by the fact that it can be produced economically.
摘要:
For the attachment of a tool provided with a cylindrical or frusto-conical shank to a rotating machine spindle at one end of the machine spindle a complementary reception opening for the shank is provided. The shank contains a coaxial bore and a plurality of slots distributed in the circumferential direction and extending through radially to the bore, which divide the shank within the reception opening into segments. In the region of the slots the shank widens out under the influence of centrifugal forces more than does the region of the spindle surrounding the shank. Thus the radial guidance of the tool is not lost even at very high rotation rates of 10,000 r.p.m. and above. A support shoulder on an annular collar of the tool prevents axial reshifting of the shank by reason of the axial stress of a clamping device and improves the rigidity of the tool-spindle connection. The bore extends through the annular collar. The external diameter of the annular collar is preferably made larger than according to standard. The end face of the spindle, intended to abut on the support shoulder, is radially inwardly provided with an annular recess and supports the tool on a maximum possible diameter. In addition a shape-engaging coupling can be provided between tool and spindle.
摘要:
A coupling system between a tool system module, such as, for example, a tool receptacle, and a machine tool, such as, for example, a spindle. In order to provide for rapid initiation and release of the connection between these components while making large axial forces available, this incorporates a clamping system with an operating rod, by means of which a wedge drive is controlled, with which clamping elements that are provided in one of the parts that are to be coupled can be forced essentially radially outwards into suitably configured recesses in the other part that is to be coupled. The clamping elements are formed from at least three clamp-like clamping claws that are arranged at equal angular intervals from each other, these being arranged essentially parallel to a centering extension of the tool receptacle; while being supported in a centering recess of the spindle a claw section of these clamping claws that in the coupled state lies radially within the centering extension these can be pivoted into a groove-like recess of the centering extension. This coupling system is distinguished by great flexibility with regard to potential use and by the fact that it can be produced economically.