On-line measurement device and method for friction torque of ball screw pair for hand-held machine tool
A ball screw pair and friction torque technology, which is applied in the field of on-line measurement devices for ball screw pair friction torque for hand-held machine tools, can solve problems such as the limitations of the measurement device, improve measurement accuracy and efficiency, and be easy to carry. small effect
Active Publication Date: 2020-11-06
NANJING UNIV OF SCI & TECH
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide an online measuring device and method for ball screw pair friction torque for machine tools, improve the measurement accuracy and measurement efficiency of ball screw pair friction torque, and solve the limitations of existing measuring devices
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Embodiment
[0044] The ball screw pair friction torque measuring device of the present invention comprises a friction torque sensor, a handle connected with the sensor, and a lead screw anti-rotation device connected with the lead screw nut flange. In this embodiment, the friction torque sensor adopts FUTEK's TFF425 static torque sensor; the ball screw pair to be tested is a 4010 screw.
[0045] The on-line measurement method of ball screw pair friction torque of the present invention comprises the following contents:
[0046]1. Adjust the handle of the measuring device to be on the same plane and coaxial with the screw anti-rotation device and fasten it, adjust the friction torque sensor so that its axis is parallel to the axis of the ball screw pair to be tested, and tighten the friction torque sensor and the handle;
[0047] 2. Snap the screw anti-rotation device of the measuring device into the nut flange of the ball screw pair and fix it;
[0048] 3. Connect the friction torque sens...
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The invention discloses an online measurement device and method for friction torque of a ball screw pair used for a hand-held machine tool. The device includes a friction torque sensor used for measuring the friction torque of the ball screw pair, a screw anti-rotation device used for preventing rotation of the ball screw pair, and a handle used for connecting the friction torque sensor and the screw anti-rotation device; and the screw anti-rotation device ia of a U-shaped structure to enable assembly to be achieved without dismounting a to-be-measured ball screw pair. The online measurement device and method for the friction torque of the ball screw pair used for the hand-held machine tool solve the problem that friction torque measurement of the ball screw pair cannot be performed on themachine tool, and fill industry blank of the online measurement device and method for the friction torque of the ball screw pair. The measurement device for the friction torque of the ball screw pairis small in volume, the method is simple and easy to implement, and the measurement precision and the measurement efficiency of the friction torque of the ball screw pair are improved.
Description
technical field [0001] The invention belongs to the field of performance testing of a ball screw pair, in particular to an on-line measuring device and method for friction torque of a ball screw pair used in a hand-held machine tool. Background technique [0002] The friction torque of the ball screw pair refers to the resistance torque formed by various friction factors that hinder the movement of the ball and the screw. It reflects the friction characteristics of the ball screw pair and is one of the important performances of the ball screw pair. In the ball screw Vice design is often considered as one of the optimization goals. [0003] At present, the detection of friction torque is measured by a static friction torque sensor, and a driving device needs to be installed on the workbench during the measurement. When the lead screw rotates, the pushing device gives push / pull force to the working slide table to completely separate the nut from the working slide table. A fo...
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IPC IPC(8): G01L3/00
Inventor欧屹周小丹陈斌斌周华西冯虎田
OwnerNANJING UNIV OF SCI & TECH