Automatic bar feeding device, especially for CNC lathes
OwnerMarkus Samuel Geiserinventor
Life of this patent
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Abstract
The automatic bar feeder device comprises a loading device that loads or unloads a bar from a hopper while avoiding shock exerted by the bar against an element of the magazine bar feed, the bar to be treated being seized by claws (42) which transport the bar towards the bench (22) and lay it smoothly down there. The movements of the loading device (40) are reversible so that it is able to act also as an unloading device. The loading/unloading device (40) cooperates with the long advance device (70) thanks to a combination of movements. Finally, the short advance device (40) and the long advance device (70) are driven for advancing the bar into a lathe, by one and the same element (98), the two devices are able to be coupled and uncoupled through a latching/unlatching device (80).
Claims20
An automatic bar feeder device for use in a magazine bar feed comprising:
- a loading device that loads or unloads a bar from a hopper while avoiding shock exerted by said bar against an element of the magazine bar feed, the loading device being comprised of:
- a set of claws integral with a seesaw,
- a cam driven by a shaft connected to motor means and having an eccentric shaft that is connected freely rotatably at the lower portion of said seesaw, the driving shaft being able to rotate in one direction and the other, and
- a lever articulated around a fixed axle and coacting with said seesaw through a mobile shaft;
- a short advance module including a flag;
- and
- a long advance module including a thrustor, the short advance module and the long advance module coacting through a coupling element, wherein said flag is engageable with said thrustor;
- wherein operation of the loading device is reversible to allow the loading and unloading of a machined bar.
An automatic bar feeder device, which is to be used in a magazine bar feed, comprising:
- a device for loading a bar to be machined from a hopper towards and on a bench, and
- a device for advancing said bar into a lathe, this advancing device containing a short advance module equipped with a flag, and a long advance module equipped with a thrustor,
- wherein the flag and the thrustor are driven by one and the same element, the short advance module and the long advance module coacting through a coupling element.
Dependencies are inferred from the claim text.