SCREWER TEST BENCH WITH IMPROVED CONTROL
First Claim
1. A control method for a test bench for screwdrivers, comprising a braking unit (11) with a brake (14) equipped with a fitting (12) for a screwdriver to be tested and transducers (15) for the measurement of angle and torque, the said brake being instructed by a control unit (16) to follow, during a screwdriver test, a torque/angle curve (17), and the method comprising steps wherein a starting Cstart torque value other than zero is set and the torque/angle curve (17) is followed starting from such Cstart value.
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Accused Products
Abstract
Within a test bench for screwdrivers, comprising a braking unit (11) with a brake (14) equipped with a fitting (12) for a screwdriver to be tested and transducers (15) for the measurement of angle and torque, a method for controlling the brake (14) can include a step wherein a starting Cstart torque value other than zero is set and the torque/angle curve (17) is followed starting from such Cstart value, during a screwdriver test.
The method can also comprise a step wherein movement along the torque/angle curve (17) is controlled in a bidirectional manner, in the sense that the brake is controlled according to a curve whose torque values are based on the angle during both decremental progression of the angle and incremental progression of the angle.
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Citations
7 Claims
- 1. A control method for a test bench for screwdrivers, comprising a braking unit (11) with a brake (14) equipped with a fitting (12) for a screwdriver to be tested and transducers (15) for the measurement of angle and torque, the said brake being instructed by a control unit (16) to follow, during a screwdriver test, a torque/angle curve (17), and the method comprising steps wherein a starting Cstart torque value other than zero is set and the torque/angle curve (17) is followed starting from such Cstart value.
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5. A test bench for screwdrivers comprising a braking unit (11) with a brake (14) equipped with a fitting (12) for a screwdriver to be tested and transducers (15) for the measurement of angle and torque, the brake (14) being controlled by a control unit (16) according any of the claims set out above relating to the method, the test bench comprising a memory (21) containing at least one torque/angle curve (17) or values or points which are representative of such curve for the generation of the curve, an interface for setting a Cstart value other than zero and a processing unit for the calculation—
- from the curve in the memory—
of the torque/angle values to control the brake starting from the set Cstart value other than zero. - View Dependent Claims (6, 7)
- from the curve in the memory—
Specification