Rechargeable Battery-Operated Screwing System with a Reduced Volume of Radio-Transmitted Data

• US 20120168189A1
• Filed: 12/29/2011
• Published: 07/05/2012
• Est. Priority Date: 12/29/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Eckert, Martin
• Application Number:
  US13/339,792
• Publication Number:
  US 20120168189A1
• Time in Patent Office: Days
• US Class Current: 173/1
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/14 Arrangement of torque limiters or torque indicators in wrenches or screwdrivers couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

Abstract

The disclosure relates to a method for using a rechargeable battery-operated screwing system which is suitable for establishing screw connections by means of a motor-driven working spindle. The rechargeable battery-operated screwing system having communication devices for wirelessly transmitting data for defining screwing curves, which describe a screwing process, between a screwing spindle module and an evaluation module, with at least two variables which are characteristic of the screwing curve being wirelessly transmitted by means of the communication devices and at least one further variable which is relevant for the screwing curve being calculated from the transmitted data by the evaluation module.

Claims

1. A method for using a rechargeable battery-operated screwing system comprising:

wireles sly transmitting data for defining screwing curves, between a screwing spindle module and an evaluation module, with communication devices of the rechargeable battery-operated screwing system;

wirelessly transmitting at least two variables which are characteristic of the screwing curve by means of the communication devices; and

modifying, with the screwing spindle module, the data which is to be transmitted by calculating at least one variable which is relevant for characterizing the screwing curve,

wherein the screwing curves describe a screwing process, and

wherein the rechargeable battery-operated screwing system is suitable for establishing screw connections by means of the motor-driven working spindle.

2. The method according to claim 1, wherein:

the screwing curve is divided into individual stages, and

characteristic values for the start angle and start time or sample rate are in each case transmitted for each stage.

3. The method according to claim 1, wherein:

a data record which is to be transmitted is calculated from the screwing curve by the screwing spindle module in a first step, and

this data which is characteristic of the screwing curve is transmitted to the evaluation module in a subsequent second step.

4. The method according to claim 1, wherein the wireless transmission of the data between the communication devices is interrupted after the data for defining a screwing curve has been transmitted, as a result of which energy consumption by the communication devices for transmitting the data which is required for defining a screwing curve is reduced.

5. The method according to claim 1, wherein pairs of torque/angle and/or torque/time values of a screwing curve within a stage with a constant rotation speed and sample rate are calculated from wirelessly transmitted data for the start angle and start time.

6. The method according to claim 1, wherein the time which is taken for transmitting the data which is required in the evaluation module for calculating the pairs of torque/angle and/or torque/time values which characterize the screwing curve is reduced compared with that for transmitting the pairs of torque/angle and/or torque/time values at the same bandwidth.

7. A rechargeable battery-operated screwing system which is suitable for establishing screw connections by means of a motor-driven working spindle, comprising:

communication devices for wirelessly transmitting data for defining screwing curves, which describe a screwing process, between a screwing spindle module and an evaluation module,

wherein the communication devices have means for wirelessly transmitting at least two variables which are characteristic of the screwing curve, and

wherein the evaluation module has a device for calculating from the data at least one further variable which is relevant for the screwing curve.

8. The rechargeable battery-operated screwing system according to claim 7, wherein the wireless data transmission between the communication devices is bidirectional.

9. The rechargeable battery-operated screwing system according to claim 7, further comprising:

a device which comprises a microcontroller and which is suitable for dividing a prespecified screwing curve into individual stages which can be defined in each case by the start angle and the start time or sample rate.

10. The rechargeable battery-operated screwing system according to claim 7, wherein the evaluation module has a device by means of which individual stages of a screwing curve and/or the prespecified screwing curve can be calculated from the start angle and start time or sample rate.

11. The rechargeable battery-operated screwing system according to claim 7, wherein the data which can be provided by the screwing spindle module for the wireless data transmission and is constant for and characteristic of individual stages of a screwing curve comprises a start angle value, a rotation speed value and a sample rate value.