Abstract: An installation for sequential loading of bars of material in a machining center includes a frame, a first device, and a second device. The frame includes at least one first arcuate bearing surface and at least one second arcuate bearing surface connected to the first bearing surface at a first station. The first device includes a first elongated body having a peripheral first face engaging the at least one first bearing surface and a plurality of first longitudinal cavities in the first face. The first elongated body is configured to rotate such that the first bearing surface blocks an opening of the first longitudinal cavities between a first position where a bar is loaded into the first longitudinal cavity and a second position where a bar exits the first longitudinal cavity at the first station.

Abstract: Installation for the sequential loading (1) of bars of material, referred to as bars (2), into a machining center (4), this installation including in particular a frame (5) and being characterized in that it is equipped: with a first device (700) which is, on the one hand, constituted by a first elongated body (7), the volume of which is substantially determined by a peripheral surface, referred to as first face (70), and comprising a plurality of first longitudinal cavities (71) which are each able to accommodate a bar (2) and each include a first opening (72) made in said first face (70), on the other hand, is able to carry out a fractional rotation about a first axis (73), aligned longitudinally, particularly carrying bars (2), so as to present the first cavities (71) in sequence to at least one first station (8), with a second device (900) which is, on the one hand, constituted by a second elongated body (9), the volume of which is substantially determined by a peripheral face, referred to as the s

Abstract: Installation for sequential loading of bars of material, referred to as bars, in a functional subassembly of a machine for machining these bars, the installation including an elongated element, referred to as pusher, which has a front end, and is placed under the control of a first device, the pusher including at least one first part which has the front end and a second part that is connected to the first device and these two parts.

Abstract: Apparatus for the control of two translational movement mechanisms of a bar, including a first translational movement mechanism (6) situated in a machine tool (4) for turning, and a second translational movement mechanism (18) situated in an installation (1) for sequential Loading of such bars (2) into the machine tool (4), characterized in that it comprises: a first element (23) consisting of an elongated ruler which includes at least a plurality of marks successively disposed along its longitudinal dimension for defining a given step and indicating distinctly two opposite directions (S1, S2) of reading this first element (23) along its longitudinal dimension, a second element (24) consisting of a detector of marks bome by the first element (23), this second element (24), on the one hand, detecting each step of a relative movement between the first element (23) and the second element (24).

Abstract: Apparatus for the control of two translational movement mechanisms of a bar, including a first translational movement mechanism (6) situated in a machine tool (4) for turning, and a second translational movement mechanism (18) situated in an installation (1) for sequential loading of such bars (2) into the machine tool (4), characterized in that it comprises: a first element (23) consisting of an elongated ruler which includes at least a plurality of marks (230) successively disposed along its longitudinal dimension for defining a given step and indicating distinctly two opposite directions (S1, S2) of reading this first element (23) along its longitudinal dimension, a second element (24) consisting of a detector of marks (230) borne by the first element (23), this second element (24), on the one hand, detecting each step of a relative movement between the first element (23) and the second element (24), as well as the direction of this movement and, on the other hand, developing a signal of step and of d

Abstract: An apparatus for sequential loading, by means of a pusher, of bars in a rotating spindle of a machine tool, this loading apparatus comprising a device for alignment of an end of each loaded bar, on the axis of the spindle of the machine tool, the said alignment device itself comprising jaws which, having bearing surfaces able to define a cylindrical support around the bar, are supported by a mechanism allowing their counter-displacements, wherein said mechanism for displacement of the jaws of the apparatus includes: a drive element, a device for control of this drive element, and this as a function of at least one of the parameters which are: the diameter of the bar to be loaded in the machine tool, the diameter of the pusher in a part capable of being engaged in the jaws, the surpassing of a predetermined threshold for vibrations in the bar.

Abstract: An apparatus for sequential loading, by means of a pusher, of bars in a rotating spindle of a machine tool, this loading apparatus comprising a device for alignment of an end of each loaded bar, on the axis of the spindle of the machine tool, the said alignment device itself comprising jaws which, having bearing surfaces able to define a cylindrical support around the bar, are supported by a mechanism allowing their counter-displacements, wherein said mechanism for displacement of the jaws of the apparatus includes:

Abstract: The feeder for short rods of a diameter of between 6 and 120 mm for a machine such as a turning lathe or an automatic lathe comprises a rod loading device having elements for holding a plurality of rods on an inclined plane and loading slides, a device for centering rods along an axis of alignment with respect to the machine tool, and a device for advancing rods in the machine tool. The holding elements are fingers which do not just hold a rod, but offer it, in the course of loading, a support surface in such a way that the rod is simultaneously supported by the finger and the loading slide. The feeder further comprises a device making it possible to adapt the position of the first rod to be loaded to the diameter of this rod when the limit stop for the course of the loading slide is adjusted to the diameter of the rod.

Abstract: Feed apparatus for automatic lathes comprises a central section bar surrounded by one or more peripheral section bars, longitudinal grooves of arcuate cross-section in all the section bars matching and cooperating with each other to form longitudinal passages for guiding bar stock when the section bars are assembled. Linings may be placed in these passages to form tubes for guiding the bar stock, these tubes being very accurately positioned relative to the outer surface of the apparatus, which may be an outer tube into which the assembly of section bars is inserted. Hence the stock-guiding tubes can be more precisely positioned, and the apparatus can be produced at low cost because the section bars are inexpensive and assembly is simple. The apparatus is particularly suitable for feeding lathes on which objects made from bar stock of very different diameters has to be machined.

Abstract: In order to reduce the outflow at the front of active liquid bathing the stock in a hydraulic stock-guiding tube of feed apparatus for an automatic lathe, a nozzle part is disposed at the front end of the guide tube in which the piece of bar stock is rotating and advancing. The nozzle includes one or more passages, through which a protective fluid is ejected, opening out into the inside aperture of the nozzle in which the bar is rotating and disposed in an oblique direction pointing toward the rear, i.e., against the flow of active liquid toward the front. This arrangement contributes toward lessening leakage of active liquid and increasing the pressure thereof around the bar, this increase in pressure in turn reducing noise and vibration in the feed apparatus.