摘要:
Complex workpieces (2), particularly aeronautical components made of solid stock presenting a bottom wall (3) and at least one stiffening rib (4) transverse to the bottom wall, are machined using a device (1) having a tool head (6) furnished with a transmission component (7) rotatable about a relative longitudinal axis s (X), and a tool (22), typically a milling cutter, connected to the transmission component (7) and capable of piercing the transverse rib (4). The longitudinal axis (Y) of the tool (22) extends obliquely to the axis (X) of the transmission component (7) so that the stiffening rib (4) can be pierced at a point close to the bottom wall (3) of the workpiece (2). The device also incorporates a feeler mechanism (24) associated with the tool head (6) and designed to engage the bottom wall (3) during the movement of the tool (22) toward the machining location, in such a way that the position of the tool head (6) can be actively controlled and the tool deployed at a selected distance from the bottom wall.
摘要:
A work holding unit for machine tools comprises a table (5) supported by a fixed bed (9) and free to pivot about a horizontal axis (A) of rotation between a substantially horizontal position, in which a workpiece (4) is loaded and clamped, and a substantially vertical position facing toward the machine tool (2), in which the workpiece (4) is machined; the table (5) is mounted to the bed by way of slide-action coupling devices (11) each composed of a curved track (12), concentric with the axis (A) of rotation, and a correspondingly curved shoe (13) anchored rigidly to the table (5) and slidable in a channel afforded by the track.
摘要:
The invention relates to a unit (14) for holding a tool (10) for chuck (7) mounting heads (6) used in machining where chips are removed from the worked part and waste material consequently produced. The unit comprises: a tool (10) holder spindle (15) designed to be attached to the chuck (7) of the head (6); and an extraction device (18) associated to the spindle (15) and comprising an annular manifold (69) comprising a first pipe (19) which extends from a first end (20) giving onto an area (B) close to the tool (10) and ends at a second end (21) equipped with a first union (73) designed to be quickly connected with the inside of a second union (74) which matches the first and which is located at a connection unit (39) associated to the chuck (7) mounting head (6); said first and second unions (73, 74) forming a detachable coupling (42) designed to connect the extraction device (18), through a second pipe (43), to a pump (46) that creates a flow of fluid at a defined pressure along the first pipe (19) so as to remove the waste material produced by machining from the area (B) close to the tool (10).
摘要:
A toolhead (1) for use on a multi-axis machine tool consists of a support assembly (2) equipped with a pivoting spindle (3) designed to accept a removable tool-holder (4), and centred on a machining axis (J) about which a tool (U) clamped to the tool-holder (4) can be driven in rotation. Also forming part of the toolhead (1) is a depth stop (9) affording an active surface (10) substantially transverse to the machining axis (J) and positionable against a surface (S) of a workpiece (P). The depth stop (9) is mounted to the support assembly (2) and capable of movement along the machining axis (J) between a first position, distanced from the spindle (3), and a second position of proximity to the spindle (3). Transducers (12) incorporated into the toolhead (1) are able to sense the position of the active surface (10) relative to the support assembly (2), and thus used to control the depth to which the workpiece (P) is penetrated by the tool (U).
摘要:
A machine tool (1) consists in a pair of slide ways (2) set apart one from another and extending parallel with a longitudinal axis (A), a machining station (3) between the slide ways (2), presenting a first zone (3a) and a second zone (3b) adjacent one to the other, and a travelling gantry (5) set in motion along the slide ways (2) and carrying a machining head (8) positionable in the first and second zones (3a, 3b). Installed alongside at least one of the slide ways (2) and containing a supply of tools (9) attachable to the machining head (8) is a magazine (12) equipped with a first changer element (14) positioned to coincide with the first zone (3a) of the station, and a second changer element (15) positioned to coincide with the second zone (3b), so that whichever of the two zones (3a, 3b) the machining head (8) happens to occupy at any given moment, the tool (9) currently in use can be replaced with a tool from the magazine (12) by the relative changer element (14, 15) with minimal loss of time.
摘要:
The automatic machine tool (100) comprises two parallel longitudinal guides (12, 13) supported by a plurality of columns (14) standing on a base (16), the guides (12, 13) being slidably engaged with two parallel sliding crossbeams (2, 3) that mount respective machining units (4, 5). The drive motion for the sliding crossbeams (2, 3) running in the guides (12, 13) is provided by linear electric motors (18, 19, 26, 27).