Abstract:
L'invention concerne un dispositif (D) de séparation entre le poste d'usinage et le poste d'entraînement d'une machine-outil (M) du type de celle mettant en mouvementau moins deux coulants porte-outil (100 et 100'). Ce dispositif est remarquable en ce qu'il est constitué, au moins entre les deux coulants (100 et 100'), d'un rideau souple (500) dit rideau central don't les deux extrémités (510 et 520) sont solidaires d'un premier coulant (100) et qui est en liaison avec le deuxième coulant (100′) de façon à ce que le mouvement relatif d'un coulant (100 et/ou 100′) par rapport à l'autre (100' et/ou 100) selon un premier axe de mouvement (X), tendue plus ou moins une longueur de rideau (500) entre les deux coulants (100 et 100'). Applications: Séparation entre le poste d'usinage et le poste d'entraînement d'une machine-outil de type bi-broche.
Abstract:
A CNC lathe provided with two opposed head stocks (2a, 2b), two turret type tool rests (3a, 3b), and a slanting base (1), the first head stock (2a) being fixed to the base (1), the second head stock (2b) being provided so that it can be moved and positioned in the direction of a main shaft only, two tool rests (3a, 3b) being arranged at the back of the head stocks (2a, 2b). A CNC lathe having the above-mentioned construction, in which each head stock is provided independently with a main shaft motor (21), a mechanically engageable and disengageable main shaft indexing driving unit (23), and main shaft side and indexing driving unit side encoders (27, 26), adapted to carry out a phase matching operation by rotating an indexing motor (40) on the basis of a phase difference detected by the encoders when the main shaft indexing driving unit (23) is connected to a main shaft (11) and when transfer of a work (16) is made between the main shafts (2a, 2b). A CNC lathe having the above-mentioned construction and provided with a synchronizing control unit (53) adapted to segment the output pulses from the encoders (27) on the main shafts on a minute time basis and correct a speed command in accordance with the magnitude thereof. According to the present invention, a CNC lathe having a first head stock of a high rigidity, capable of using a bar feeder of a conventional construction and having an improved efficiency in carrying out a work machining operation including an indexing machining operation using two main shafts an improved efficiency of machining a bar material which requires a cutting-off when the transfer of the work is made between the main shafts can be obtained.
Abstract:
A machine tool and a cover device for the machine tool capable of preventing work cutting chips and cutting lubricant from falling on the rear part of a spindle head (8) and the operating positions of a first saddle (4) and a second saddle (6) without expanding the lateral width of the machine tool, wherein a column (2) is fixedly installed on a bed (1), the first saddle (4) is guided on the front surface of the column (2) movably in vertical direction (f1), the second saddle (6) is guided on the front surface of the first saddle (4) movably in lateral direction (f2), and the spindle head (8) is guided on the second saddle (6) movably in longitudinal direction (f3) and, in addition, a first cover plate (31) is fixed to the second saddle (6), a side cover plate (33) is installed continuously with each of the right and left side edges of the cover plate (31) bendably in longitudinal direction (f3), a second cover plate (39) is fixed integrally with the first saddle (4), and a third cover plate (41) is installed fixedly to the front side of the second cover body (39).
Abstract:
The present invention relates to a method and a device in the chip-removing machining of a work-piece (3) by means of a rotatable tool (4) with an arbor arranged in a headstock. The tool (4) is displaceable both in an axial direction towards and away from the work-piece (3) and in a plane substantially perpendicular to the arbor. Arranged around a machining point (2) is an enclosure (1), which has a first opening (6), designed to bear tightly against the work-piece (3) around the machining point (2). A second opening (9) in the enclosure (1) is made in a wall (8) substantially perpendicular to the arbor and is designed, during machining, to bear tightly against a plane plate (10) arranged behind the tool (4) and around the headstock, substantially perpendicular to the arbor, so that during machining there is a substantially enclosed space in the area around the tool (4) and the machining point (2). The device comprises means of delivering cutting fluid to the machining point (2) and the enclosure (1) has an outlet opening (12) through which chips that are removed are evacuated from the enclosure (1) by means of the cutting fluid delivered.
Abstract:
The invention concerns a rotary device (R) for changing parts to be machined by a machine-tool (M), consisting of a supporting table (100) which, comprising at least two pallet supports (110 and 120) arranged at regular angular interval for receiving each a part-carrying pallet (210 and 220), is mounted rotating (arrow F) between the machining station (300) of the machine-tool (M) and the post for supplying (400) part-carrying pallets (210 and 220) arranged opposite said machining station (300). This device is characterised in that said supporting table (100) is mounted pivoting about its central axis (Y) and tilting between a horizontal position and an inclined position (angle "a") relative to the hor izontal plane. The invention is useful for changing parts for a machine-tool.
Abstract:
The tool has a tool shank (which may be hollow) (14), whilst the machine spindle has a connecting sleeve (20) containing a recess (18) to accommodate the tool shank. A clamping mechanism (22) is located in the area between the tool shank (14) and the connecting sleeve (20). This mechanism has at least one clamping element (24''), with radial movement, which acts as a wedge drive, providing axial clamping movement between the tool shank (14) and connecting sleeve (20). The clamping mechanism comprises an actuating nut (26), which screws onto an exterior thread (28) on the connecting sleeve (20) and is coaxial in relation to the spindle axis. During the clamping procedure, the axial movement of the actuating nut can be converted into the radial movement of the clamping element (24''), with the help of at least one connecting link (30'').