System

Patent metadata

Field	Value
Publication number	US-11738460-B2
Application number	US-202117192266-A
Country	US
Kind code	B2
Filing date	Mar 4, 2021
Priority date	Mar 6, 2020
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A system having a sensor system comprising distance sensors for monitoring a hazardous zone at a movable machine part having at least one protected zone, wherein a tool is arranged at the movable machine part, wherein the distance sensors are arranged at a holder at the movable machine part, wherein a plurality of distance sensors are arranged, with the detection beams of the distance sensors forming a protected field shell, wherein the holder has the distance sensors, with the holder having a disk-shaped housing, with the disk-shaped housing having round surfaces and not having any corners at the outer surfaces, with the system comprising a fastening system, the fastening system comprises one of a first fastening adapter and a second fastening adapter at which the holder is respectively arranged for fastening the holder to the movable machine part.

First claim

The invention claimed is:

1. A system having a sensor system comprising distance sensors and a control and evaluation unit for monitoring a hazardous zone at a movable machine part having at least one protected zone, wherein a tool is arranged at the movable machine part,
wherein the distance sensors are arranged at a holder;
wherein a plurality of distance sensors are arranged; with the detection beams of the distance sensors forming a protected field shell;
wherein the holder has the distance sensors, with the holder having a disk-shaped housing, with the disk-shaped housing having round surfaces and not having any corners at the outer surfaces, with the system comprising a fastening system,
wherein the fastening system comprises a second fastening adapter at which the holder is arranged for fastening the holder to the movable machine part, with the second fastening adapter having two limbs that are arranged at a right angle to one another, with the holder being fastened to the first limb and with the second fastening adapter being connected to the movable machine part at the second limb, and
wherein the second fastening adapter is screwed to the holder by means of a single screw connection, with the screw connection having a diameter that is greater than the central continuous opening for the tool.

2. The system in accordance with claim 1 , wherein the first limb of the second fastening adapter has an opening for the tool.

3. The system in accordance with claim 1 , wherein the first limb and the second limb each have fastening holes.

4. The system in accordance with claim 1 , wherein the first limb and the second limb are each formed as round at the ends.

5. The system in accordance with claim 1 , wherein the tool is one of an installation tool, a screw tool, a bonding tool, a cleaning tool, a drilling tool, a milling tool, a grinding tool, and a deburring tool.

6. The system in accordance with claim 1 , wherein the system comprises the control and evaluation unit, with the distance sensors being connected to the control and evaluation unit, with first detection beams of the distance sensors forming the protected field shell and second detection beams of the distance sensors forming a warning field shell, with the warning field shell sheathing the protected field shell.

7. The system in accordance with claim 1 , wherein the control and evaluation unit is configured to vary a movement speed of the movable machine part, with the movement speed being slowed on an intervention in the warning field shell and being stopped on an intervention in the protected field shell.

8. The system in accordance with claim 1 , wherein the control and evaluation unit is configured to only activate the tool when a minimum distance is present between the tool and a work-piece, with the minimum distance being based on anthropometric data.

9. The system in accordance with claim 1 , wherein the control and evaluation unit is configured to only activate the tool when a minimum distance is present between the tool and a workpiece, with the minimum distance amounting to 10 mm to 20 mm.

10. The system in accordance with claim 1 , wherein the control and evaluation unit is configured to only activate the tool when a minimum distance is present between the tool and a workpiece, with the minimum distance amounting to 14 mm.

Assignees

• Sick Ag

Inventors

• Hoffmann Christoph
• Erlewein Patrick
• Schonhardt Axel

Classifications

• B25J9/1676 Primary

  Avoiding collision or forbidden zones · CPC title

• B25J15/0019

  End effectors other than grippers · CPC title

• B25J15/045

  having screw means · CPC title

• F16P3/144 Primary

  using light grids · CPC title

• F16P3/14

  the means being photocells or other devices sensitive without mechanical contact · CPC title