Polling system for a moved machine component

• US 20090261982A1
• Filed: 07/11/2006
• Published: 10/22/2009
• Est. Priority Date: 07/27/2005
• Status: Abandoned Application

• Current Assignee: Schunk GmbH & Company KG Spann- und Greiftechnik
• Original Assignee: Schunk GmbH & Company KG Spann- und Greiftechnik
• Inventors: Schuster, Andreas, Fellhauer, Bruno
• Application Number:
  US11/989,288
• Publication Number:
  US 20090261982A1
• Time in Patent Office: Days
• US Class Current: 340/686.100
• CPC Class Codes: B23B 2231/26 Detection of clamping
• CPC Class Codes: B23B 2260/128 Sensors
• CPC Class Codes: B23B 31/24 characterised by features relating primarily to remote control of the gripping means B23B31/201 takes precedence
• CPC Class Codes: Y10T 279/21 with measuring, indicating or control means

Abstract

A polling system for a moved machine component comprises a polling subunit that is to be disposed at the machine component end and is provided with at least one switch which operates without power in a certain state of the machine component or a certain position of a part of the machine component, a radio transmitter unit that evaluates the switching modes of the switch and transmits the evaluated switching signals with digital radio switching signals, and an electric power source for supplying the radio transmitter unit. The polling system further comprises a radio receiver unit which is stationary relative to the polling subunit and is used for receiving and evaluating, forwarding and/or displaying the signals received from the radio transmitter unit.

Claims

1-10. -10. (canceled)

11. A polling system for a moved machine component, the system comprising:

a polling subunit disposed at the machine component and having at least one switch that operates without power in a certain state of the machine component or a certain position of a part of the machine component, a radio transmitter unit that evaluates switching modes of said switch and transmits evaluated switching signals using digital radio switching signals, and an electric power source for supplying the radio transmitter unit; and

a radio receiver unit that is stationary relative to said polling subunit, said radio receiver unit receiving and evaluating, forwarding and/or displaying signals received from said radio transmitter unit, wherein said radio transmitter unit is structured to only transmit radio switching signals upon a change in a switching mode of said switch, said radio contact control signals being transmitted at regular time intervals, wherein said radio receiver unit evaluates, passes on, and/or displays said signals to permit prompt recognition of polling system failure.

14. The polling system of claim 11, wherein said radio transmitter unit can be switched into an operating mode, setting mode and storage mode.

15. The polling system of claim 14, wherein switching between modes is performed by means of a contactless magnetic switching element.

16. The polling system of claim 11, wherein said power source is a battery or power generator.

17. The polling system of claim 11, wherein said switch is a momentary-contact switch, maintained-contact switch, pressure switch, or magnetic proximity switch.

18. A machine component in the form of a power chuck, the machine component comprising;

a chuck body;

a clamping jaw borne by said chuck body and disposed to rotate about an axis of rotation;

a polling system having a polling subunit disposed at the machine component and with at least one switch that operates without power in a certain state of the machine component or a certain position of a part of the machine component, a radio transmitter unit that evaluates switching modes of said switch and transmits evaluated switching signals using digital radio switching signals, and an electric power source for supplying said radio transmitter unit; and

a radio receiver unit that is stationary relative to said polling subunit, said radio receiver unit receiving and evaluating, forwarding and/or displaying signals received from said radio transmitter unit, wherein said polling subunit is disposed in said chuck body and said radio transmitter unit comprises an antenna, shaped like a helical spring, that protrudes in an axial direction out of a surface of said chuck body that extends perpendicularly to the axis of rotation, wherein said radio transmitter unit, together with said antenna and power source, is completely encased within a plastic casting.

19. The power chuck of claim 18, wherein said antenna extends along a curved line.

20. The power chuck of claim 18, wherein said switch is a pressure switch for monitoring a clamping pressure state of clamping pressure equipment and/or a clamping position of said clamping jaw.