Process and a device for the rotation-angle-monitored tightening or loosening of screw connections
First Claim
1. Process for rotatably driving a threaded fastener using a tool of the type having a housing and a rotatable fastener drive part carried by the housing, said process comprising:
- determining a first angle corresponding to the rotation angle of the drive part with respect to the housing,determining a second angle corresponding to the rotation angle of the housing with respect to a fixed point, anddetermining an absolute rotation angle of the drive part with respect to the fixed point by combining the first and second angles.
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Accused Products
Abstract
The invention relates to a process and a device for the rotation-angle-monitored tightening or loosening of screw connections by means of power driven tools. The absolute rotation angle swept over in the screwing operation with respect to a fixed point about a swivel axis through the rotation axis of the screw connection is measured. An advantageous, relative-position free, absolute measurement of the rotation angle is effected by the use of an absolute rotation-rate measuring sensor. The rotation-rate sensor can herein be configured as a mechanical, compass-like gyroscope, as a rotation sensor or as an acceleration sensor, by means of which a measured value correlated with the absolute rotation angle can be recorded.
63 Citations
36 Claims
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1. Process for rotatably driving a threaded fastener using a tool of the type having a housing and a rotatable fastener drive part carried by the housing, said process comprising:
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determining a first angle corresponding to the rotation angle of the drive part with respect to the housing, determining a second angle corresponding to the rotation angle of the housing with respect to a fixed point, and determining an absolute rotation angle of the drive part with respect to the fixed point by combining the first and second angles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Tool apparatus for rotatably driving a threaded fastener including a tool of the type having a housing and a rotatable fastener drive part carried by the housing, said tool apparatus comprising:
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a first angle determining device for determining a first angle corresponding to the rotation angle of the drive part with respect to the housing, a second angle determining device for determining a second angle corresponding to the rotation angle of the housing with respect to a fixed point, and an absolute rotation angle determining device for determining an absolute rotation angle of the drive part with respect to the fixed point by combining the first and second angles. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification