METHOD AND MECHANISM FOR THE INDIRECT COUPLING TORQUE CONTROL
First Claim
1. A method for the indirect coupling torque control, including the steps of:
- a) providing a rotary impact mechanism (2) driving a fastener member (4) to rotate;
b) using a rotary drive mechanism linked between the rotary impact mechanism (2) and the fastener member (4), the rotary drive mechanism accumulating a rotation stress generated by the rotary impact mechanism (2) to rotate the fastener member (4); and
c) providing a linear relation between a sensed signal measured from the rotation stress accumulated in the rotary drive mechanism and a torque value applied to the fastener member (4) when the rotation stress accumulated in the rotary drive mechanism is larger than the torque value applied to rotate the fastener member (4),whereby the linear relation is used to control the torque value applied to the fastener member (4) when the rotary impact mechanism (2) is rotating.
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Accused Products
Abstract
A method and mechanism of the indirect coupling torque control provides a rotary impact mechanism driving a rotary drive mechanism linked between the rotary impact mechanism and a fastener member, when the rotary impact mechanism rotates the fastener member. The rotary drive mechanism can accumulate a rotation stress generated by the rotary impact mechanism to rotate the fastener member. When the rotation stress accumulated in the rotary drive mechanism is larger than the torque value applied to the fastener member, a linear relation between a sensed signal measured from the stress accumulated in the rotary drive mechanism and the torque value applied to the fastener member is provided. Whereby the linear relation is used to control the torque valued applied to the fastener member when the rotary impact mechanism is rotating.
12 Citations
10 Claims
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1. A method for the indirect coupling torque control, including the steps of:
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a) providing a rotary impact mechanism (2) driving a fastener member (4) to rotate; b) using a rotary drive mechanism linked between the rotary impact mechanism (2) and the fastener member (4), the rotary drive mechanism accumulating a rotation stress generated by the rotary impact mechanism (2) to rotate the fastener member (4); and c) providing a linear relation between a sensed signal measured from the rotation stress accumulated in the rotary drive mechanism and a torque value applied to the fastener member (4) when the rotation stress accumulated in the rotary drive mechanism is larger than the torque value applied to rotate the fastener member (4), whereby the linear relation is used to control the torque value applied to the fastener member (4) when the rotary impact mechanism (2) is rotating. - View Dependent Claims (2, 3, 4)
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5. A mechanism for the indirect coupling torque control which is used to link a rotary impact mechanism (2) to drive a fastener member (4), including:
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a threaded sleeve (10) driven by the rotary impact mechanism (2); a transmission screw (11) screwed by the threaded sleeve (10) to drive a rear drive shaft (14), whereby to drive the fastener member (4); a stress member (12) driven by the threaded sleeve (10) to move axially on the threaded sleeve (10); and a sensing member (13) disposed on the transmission screw (11) and disposed axially with respect to the stress member (12) to withstand compression or tension caused by the stress member (12), wherein the thread sleeve (10) has a right-hand thread and a left-hand thread disposed between the transmission screw (11) and the stress member (12), whereby the rotary impact mechanism (2) drives the threaded sleeve (10) and moves the stress member (12) to compress or stretch the sensing member (13) and thus to measure the sensed signal of the sensing member (13) to obtain an output torque value for torque control. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification