Pneumatic needling device

Patent metadata

Field	Value
Publication number	US-10131963-B2
Application number	US-201414778071-A
Country	US
Kind code	B2
Filing date	Apr 5, 2014
Priority date	Apr 30, 2013
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

The invention relates to a pneumatic needling device for the local surface treatment, more particularly fastening, of components, comprising a first and a second needle (2) that can move in a needle direction; a first and a second piston chamber (3) for applying pneumatic pressure to the first and second needles in the needle direction; a pressure supply (1) that can be connected to and disconnected from the piston chambers, more particularly as a result of a movement of the needles in the needling device; a pressure recording means (5) for measuring pressure fluctuations in the piston chambers; and a control means (6) designed to carry out a reaction on the basis of the measured pressure fluctuations.

First claim

The invention claimed is:

1. A method for operating a pneumatic needling device
for local surface treatment, including strengthening, of components, having a first needle ( 2 ), which is movable in a needle direction;
a first piston chamber ( 3 ) for the pneumatic pressurizing of the first needle in its needle direction;
a pressure supply ( 1 ), which can be connected to and separated from the first piston chamber, by a movement of the first needle in its needle direction;
a pressure detecting means ( 5 ) for determining a first pressure fluctuation in the first piston chamber;
a second needle ( 2 ), which is movable in a needle direction;
a second piston chamber ( 3 ) for the pneumatic pressurizing of the second needle in its needle direction;
a pressure detecting means ( 5 ) for determining a second pressure fluctuation in the second piston chamber;
a pressure supply ( 1 ), which can be connected to and separated from the second piston chamber, by a movement of the second needle in its needle direction; and
a control means ( 6 ),
wherein the method comprises the steps:
determining (S 10 ) the first pressure fluctuation in the first piston chamber ( 3 );
determining (S 10 ) a second pressure fluctuation in the second piston chamber ( 3 ); and
executing (S 20 , S 40 ) a response (R 1 , R 2 ) based on the determined first and/or second pressure fluctuation.

2. The method according to claim 1 , further characterized in that the response comprises an output of a message (S 20 ), a storing of information and/or a change in a supply pressure (S 20 ) and/or a position of the needling device (S 40 ).

3. The method according to claim 2 , further characterized in that the response (R 1 , R 2 ) is executed (S 20 , S 40 ) when the determined first and/or second pressure fluctuation exceeds or goes below a predefined value (αT max , βT max ).

4. The method according to claim 1 , further characterized in that different responses (R 1 , R 2 ) are executed as a function of the determined first and/or second pressure fluctuation.

5. The method according to claim 1 , further characterized in that the determined first and/or second pressure fluctuation comprises a vibration value, including a frequency (1/T) or a period (T).

6. The method according to claim 5 , further characterized in that a response (R 1 , R 2 ) is executed (S 20 , S 40 ) when the determined first and/or second pressure fluctuation exceeds or goes below a predefined value (αT max , βT max ).

7. A pneumatic needling device for local surface treatment, in particular strengthening, of components, having
a first needle ( 2 ), which is movable in a needle direction;
a first piston chamber ( 3 ) for the pneumatic pressurizing of the first needle in its needle direction;
a pressure supply ( 1 ), which can be connected to and separated from the first piston chamber, by a movement of the first needle in its needle direction;
a pressure detecting means ( 5 ) for determining a first pressure fluctuation in the first piston chamber;
a second needle ( 2 ), which is movable in a needle direction;
a second piston chamber ( 3 ) for the pneumatic pressurizing of the second needle in its needle direction;
a pressure detecting means ( 5 ) for determining a second pressure fluctuation in the second piston chamber;
a pressure supply ( 1 ), which can be connected to and separated from the second piston chamber, by a movement of the second needle in its needle direction; and
a control means ( 6 ), which is set up to execute (S 20 , S 40 ) a response (R 1 , R 2 ) based on the determined first and/or second pressure fluctuation.

8. The pneumatic needling device according to claim 7 , further characterized in that the response comprises an output of a message (S 20 ), a storing of information, and/or a change in a supply pressure (S 20 ) and/or a position of the needling device (S 40 ).

9. The pneumatic needling device according to claim 8 , further characterized in that the control means is equipped for the purpose of executing (S 20 , S 40 ) a response (R 1 , R 2 ) when the determined first and/or second pressure fluctuation exceeds or goes below a predefined value (αT max , βT max ).

10. The pneumatic needling device according to claim 7 , further characterized in that the control means is equipped for the purpose of executing different responses (R 1 , R 2 ) as a function of the determined first and/or second pressure fluctuation.

11. The pneumatic needling device according to claim 7 , further characterized in that the determined first and/or second pressure fluctuation comprises a vibration value, including a frequency (1/T) or a period (T).

12. The pneumatic needling device according to claim 11 , further characterized in that the control means is equipped for the purpose of executing (S 20 , S 40 ) a response (R 1 , R 2 ) when the determined first and/or second pressure fluctuation exceeds or goes below a predefined value (αT max , βT max ).

Assignees

• MTU Aero Engines AG

Inventors

• Ehrl Janne
• Polanetzki Holger

Classifications

• Y10T29/49778

  with aligning, guiding, or instruction · CPC title

• Y10T29/5303

  Responsive to condition of work or product · CPC title

• B23P9/04

  Treating or finishing by hammering or applying repeated pressure · CPC title

• Y10T29/49776

  Pressure, force, or weight determining · CPC title

• B25D9/02

  of the tool-carrier piston type, i.e. in which the tool is connected to an impulse member · CPC title