Peeling machine for elongated products

Patent metadata

Field	Value
Publication number	US-12454008-B2
Application number	US-202117905666-A
Country	US
Kind code	B2
Filing date	Mar 5, 2021
Priority date	Mar 6, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

The peeling machine, comprising: a rotating head installed rotating about an axis of rotation and provided with a central cavity in which, during use, there is disposed an elongated product to be worked; the rotating head is provided with a plurality of tools and with at least one adjustment unit configured to move the tools away from or toward the elongated product; a first motor configured to make the rotating head rotate about the axis of rotation; and a transmission unit configured to transmit motion from a second motor to the adjustment unit in order to simultaneously adjust the radial position of the tools; the transmission unit comprises a differential device kinematically connected between the second motor and the adjustment unit so that an adjustment of the position of the tools with respect to the elongated product corresponds to the drive of the second motor.

First claim

The invention claimed is:

1. A peeling machine, comprising:
a rotating head rotating about an axis of rotation and provided with a central cavity in which, during use, there is disposed an elongated product to be worked, said rotating head being provided with a plurality of tools and with at least one adjustment unit configured to move said tools away from or toward the elongated product;
a first motor configured to make said rotating head rotate about said axis of rotation; and
a transmission unit configured to transmit motion from a second motor to said adjustment unit in order to simultaneously adjust the radial position of said tools, said transmission unit comprising a differential device kinematically connected between said second motor and said adjustment unit so that an adjustment of the position of said tools with respect to said elongated product corresponds to the drive of said second motor,
wherein said rotating head comprises a mandrel rotating about said axis of rotation by means of the drive of said first motor and a fixed structure in which said mandrel is housed,
wherein said first motor is an electric motor comprising at least one rotor fixed to the mandrel and at least one stator mounted on said fixed structure and positioned around said rotor,
wherein the machine further comprises a joint for distributing a cooling fluid housed in said mandrel and positioned in proximity of one end of the mandrel opposite an end of the mandrel connected to the rotating head and wherein a cooling system is able to send the cooling fluid to said joint and then, through a path made in the rotating head, to said tools,
wherein said mandrel comprises a hole directed along said axis of rotation and in which there is housed at least one guide integral with said fixed structure.

2. The peeling machine as in claim 1 , wherein said joint comprises a fixed internal ring fixed on said guide and a rotating external ring associated with said mandrel.

3. The peeling machine as in claim 2 , wherein said joint comprises an annular hollow space made between said internal ring and said external ring, said internal ring comprising one or more holes for an entry of the cooling fluid and said external ring comprising one or more holes for an exit of the cooling fluid.

4. The peeling machine as in claim 3 , wherein said internal ring comprises an annular groove where said one or more holes for the entry of the cooling fluid are made.

5. The peeling machine as in claim 3 , wherein said external ring comprises an annular groove where said one or more holes for the exit of the cooling fluid are made.

6. The peeling machine as in claim 1 , wherein said path develops through a conduit which extends an entire length of said mandrel.

7. The peeling machine as in claim 6 , wherein said conduit extends parallel to the axis of rotation.

8. The peeling machine as in claim 1 , wherein said tools are supported by sliders slidable on at least one inclined plane made in at least one conical ring mobile inside said adjustment unit by means of one or more drive devices, wherein the sliding of the conical ring determines a sliding of the sliders in a radial direction with respect to the axis of rotation and therefore a movement of the tools toward or away from the elongated product being worked.

9. The peeling machine as in claim 8 , wherein said adjustment unit comprises a fixed main body on which said conical ring is positioned, said conical ring being slidable with respect to said main body in a bidirectional manner and in a direction parallel to said axis of rotation by means of said one or more drive devices.

10. The peeling machine as in claim 8 , wherein said one or more drive devices comprise one or more lead screws.

11. The peeling machine as in claim 1 , wherein said differential device is directly coupled to said adjustment unit and to said rotating head by means of said transmission unit.

12. The peeling machine as in claim 1 , wherein said transmission unit comprises a hollow shaft, on which a toothed wheel is installed which kinematically meshes with a gear made on a support body of said rotating head, wherein said hollow shaft is provided with a transmission toothed wheel integrally rotatable therewith about an axis of rotation, and kinematically connected to said differential device.

13. The peeling machine as in claim 12 , wherein said differential device comprises at least one first satellite wheel configured to mesh with said transmission toothed wheel and at least one second satellite wheel integrally rotatable with said at least one first satellite toothed wheel and configured to mesh with a first toothed wheel integrally installed on a transmission shaft disposed in said hollow shaft and connected to a toothed wheel kinematically connected to said adjustment unit.

14. The peeling machine of claim 10 , wherein said one or more lead screws include one or more roller screws.

15. The peeling machine of claim 10 , wherein said one or more lead screws include one or more ball screws.

Assignees

• Danieli Off Mecc

Inventors

• Migali Simone Antonio

Classifications

• B23Q11/103

  Rotary joints specially adapted for feeding the cutting liquid to the spindle · CPC title

• B23B3/26

  the tools of which perform a radial movement; Rotary tool heads thereof · CPC title

• B23B5/12 Primary

  for peeling bars or tubes by making use of cutting bits arranged around the workpiece (otherwise than by turning B23D79/12) · CPC title