摘要:
Workpieces of large dimensions, typically body pressings or fuselage panels, are supported and secured for machining by a device (3) capable of movement in a vertical direction (D) and adaptable thus to the particular geometry of the workpiece. The vertical movement is produced by a rod (5) of which the top end carries a head (6) incorporating a pivotable fixture mechanism (7), equipped with a suction cup (16) connected to a source (18) of negative pressure by way of a suction duct (17) and activated to clamp the work once the head (6) is in position.
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) equipped with a supporting body (5) and at least one tool-holder spindle (6), rotatable about a respective axis (A1), also has a built-in dust extraction device (8) comprising an extractor hood (9) located in close proximity to the spindle (6) and presenting a suction port (10) positionable near to a machining area (11), so as to extract chips and dust generated in the course of machining operations; the hood (9) is capable of movement along a direction (D1) parallel to the axis (A1) of rotation, extended and retracted by the action of respective translating members (19) operating in conjunction with sensors (34) able to read the profile of a workpiece (7), in such a way that the suction port (10) can be positioned to best advantage.
摘要:
In a machine tool with a spindle (10) capable of motion along at least three axes x, y, and z, the position of the spindle is checked by a device that operates utilizing electromagnetic signals sent out by four emitters (20), located externally of the machine tool, and picked up by a receiver (21) mounted directly to the spindle. The signals are fed into a master control unit (23) and processed by circuits (24, 25) in such a way as to produce an output that can be used to verify and if necessary correct the position of the spindle on the three axes X, Y, and Z.