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Multiple operator station (1) for machine tools designed in particular
for chip removal along several axes, comprises several operator
units (345) suitable for coupling with a tool or a workpiece,
these operator units (345) being fitted on a bearing structure
(2) that is curved in shape with the concave part facing downwards,
and positioned in such a way that below the zone (6) in which the
part is positioned during machining, there are no functional parts
of the machine subject to movement of one part in relation to another.
A liquid filtering system in machine tools which uses, in a recycling
circuit, a work tank, a dirty liquid tank, a filter and a clean
liquid tank in which water of a very low conductivity is used and
adding at least one ferric oxide flocculent based on a polyelectrolyte
polymer to the low conductivity water.
The invention relates to a low-cost, low-weight, highly stable
reference object, easy to handle, for the measurement of the errors
of geometry of coordinate measuring machines and machine tools.
The reference object consists of an array of probing elements in
the form of rings, spheres, or flats, each representing reference
points by means of their surface geometry. The probing elements
are glued between two panes of a geometrically stable material,
establishing a firm connection between these panes. Holes in the
panes enable the measuring probe of the machine under inspection
to probe the reference elements' surfaces. The resulting box-type
structure of the reference object gives it the said advantages of
low weight, low price, and high stability.
The invention relates to a position drive for a tool head for use
in machine tools. The tool head comprises a base body (12), a tool
shank (16) which protrudes axially over the base body (12) and is
coupleable to a rotating machine spindle (14), and a thrust member
(18) which is movable with respect to the base body (12) and which
serves to move at least one tip holder or cutting tool (76). Further,
an electric motor arrangement (24), which is coupleable to the thrust
member (18), and a power supply device (26) for the motor arrangement
(24) are positioned on the base body (12). In order to ensure a
compact construction having an efficient motor arrangement, a hollow
shaft (50) is borne rotatable about an axis of the base body (12),
which is concentric with respect to a displacement axis (52) of
the thrust member (18), and the hollow shaft (50) has an internal
thread which engages in an external thread (42) of the thrust member
(18). The hollow shaft (50) has a toothed ring (62) which is positioned
concentric with respect to the external thread (42), for the engagement
of at least one gear (70) which is positioned on a driven shaft
(68) of the motor arrangement (24).
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