Arrangement for working a tube end

Patent metadata

Field	Value
Publication number	US-10814458-B2
Application number	US-201815956776-A
Country	US
Kind code	B2
Filing date	Apr 19, 2018
Priority date	Apr 21, 2017
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

An arrangement for working a tube end includes: an operating cylinder with a piston displaceable along an longitudinal axis; and a tube mounting, a tool holder being provided at an end of the piston facing the tube mounting. The operating cylinder is provided as a tandem cylinder. At least two cylinder stages are offset along the longitudinal axis. The piston includes connected piston segments, each piston segment being allocated to a cylinder stage.

First claim

What is claimed is:

1. An arrangement for working a tube end, the arrangement comprising:
an operating cylinder with a piston displaceable along a longitudinal axis; and
a tube mounting, a tool holder being provided at an end of the piston facing the tube mounting,
wherein the operating cylinder is a tandem cylinder,
wherein at least two cylinder stages are offset along the longitudinal axis,
wherein the piston comprises connected piston segments, each piston segment being allocated to a corresponding cylinder stage,
wherein a tool is attached concentrically to the tool holder so as to be co-axial with the tool holder along the longitudinal axis and
wherein the tool comprises an operating axis which is radially offset with respect to the longitudinal axis.

2. The arrangement according to claim 1 , wherein each cylinder stage is configured to impress a force onto the respective piston segment.

3. The arrangement according to claim 1 , wherein the piston comprises an anti-twist protection device configured to prevent the piston from twisting relative to the operating cylinder.

4. The arrangement according to claim 3 , wherein the anti-twist protection device protrudes in a radial direction from the piston through a clearance in a wall of the cylinder, the clearance running axially along the wall of the cylinder.

5. The arrangement according to claim 4 , wherein the tool holder is equipped with at least one sensor configured to detect at least one characteristic of an attached tool.

6. The arrangement according to claim 5 , further comprising a signal line that runs from the at least one sensor through the piston and the anti-twist protection device out of the operating cylinder.

7. The arrangement according to claim 6 , further comprising a power supply line which runs in parallel to the signal line.

8. The arrangement according to claim 3 , further comprising a position sensor configured to detect a longitudinal position of the anti-twist protection device.

9. An arrangement for working a tube end, the arrangement comprising:
an operating cylinder with a piston displaceable along a longitudinal axis; and
a tube mounting, a tool holder being provided at an end of the piston facing the tube mounting,
wherein the operating cylinder is a tandem cylinder,
wherein at least two cylinder stages are offset along the longitudinal axis,
wherein the piston comprises connected piston segments, each piston segment being allocated to a corresponding cylinder stage,
wherein the piston comprises an anti-twist protection device configured to prevent the piston from twisting relative to the operating cylinder,
wherein the anti-twist protection device protrudes in a radial direction from the piston through a clearance in a wall of the cylinder, the clearance running axially along the wall of the cylinder,
wherein the tool holder is equipped with at least one sensor configured to detect at least one characteristic of an attached tool, and
wherein the arrangement further comprises a signal line that runs from the at least one sensor through the piston and the anti-twist protection device out of the operating cylinder.

10. The arrangement according to claim 9 , further comprising a power supply line which runs in parallel to the signal line.

11. An arrangement for working a tube end, the arrangement comprising: an operating cylinder with a piston displaceable along a longitudinal axis; and a tube mounting, a tool holder being provided at an end of the piston facing the tube mounting, wherein the operating cylinder is a tandem cylinder, wherein at least two cylinder stages are offset along the longitudinal axis, wherein the piston comprises connected piston segments, each piston segment being allocated to a corresponding cylinder stage, wherein a tool is attached to the tool holder, wherein the tool comprises an operating axis which is radially offset with respect to the longitudinal axis, wherein the piston comprises an anti-twist protection device configured to prevent the piston from twisting relative to the operating cylinder, wherein the anti-twist protection device protrudes in a radial direction from the piston through a clearance in a wall of the cylinder, the clearance running axially along the wall of the cylinder, wherein the tool holder is equipped with at least one sensor configured to detect at least one characteristic of an attached tool, and wherein the arrangement further comprises a signal line that runs from the at least one sensor through the piston and the anti-twist protection device, out of the operating cylinder.

12. The arrangement according to claim 11 , further comprising a power supply line which runs in parallel to the signal line.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Maubach Martin

Classifications

• B21D19/06 Primary

  working inwardly · CPC title

• B21D41/023

  comprising rolling elements · CPC title

• B21D19/16

  Reverse flanging of tube ends · CPC title

• B21D19/12

  Edge-curling · CPC title

• B21D41/025

  by means of impact-type swaging hand tools · CPC title