Ball screw bending deflection detecting device and method
A bending deflection and ball screw technology, which is applied in the field of ball screw bending deflection detection devices, can solve the problems of detecting deflection and difficult measurement instruments, and achieve the effect of high authenticity and cost saving
Active Publication Date: 2017-05-10
TIANJIN SAIXIANG TECH
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Problems solved by technology
Due to the particularity of the working mode of the ball screw, it is difficult to directly detect the deflection during the working process with precise measuring instruments, and there are few devices for measuring the bending deflection of the ball screw
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Embodiment Construction
[0042] Below in conjunction with accompanying drawing, the present invention will be further described:
[0043] Such as figure 2 As shown, a ball screw bending deflection detection device includes a first chuck 1 and a second chuck 2, the first chuck 1 and the second chuck 2 are connected to the screw nut pair through fastening bolts 3, the second The first chuck 1 and the middle part of the second chuck 2 are correspondingly provided with connecting holes 5 for passing through the ball screw, the first chuck 1 is provided with a rectangular slot 6, and the second chuck is provided with a rectangular chuck. The slots 6 match the rectangular locking teeth 9, and four test holes 7 are arranged at equal intervals around the connecting hole 5, and the test holes 7 are fixed with a stress test column 4 for detecting the bending deflection of the ball screw. The stress test column is provided with four rectangular planes for pasting the strain gauges, two of the four rectangular ...
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The invention discloses a ball screw bending deflection detecting device and method. The device comprises a first chuck and a second chuck connected by bolts and lead screw nuts. Connection holes, through which a ball screw passes, are correspondingly disposed on the center of the first chuck and the center of the second chuck. The first chuck is provided with rectangular clamping grooves. The second chuck is provided with rectangular teeth which are engaged with the rectangular clamping grooves. Four test holes surround the connection hole at equal intervals. Stress test posts for detecting the bending deflection of the ball screw are fixed in the test holes. The deformation of the ball screw is calculated indirectly by the deformation of the four stress test posts mounted on the chuck. The deformation of the stress test posts is measured by a full-bridge strain gauge pasted on the posts. The software system of the detecting device, by processing the deformation data of the strain gauge, may evaluate the bending deflection value of the ball screw in real time. The detecting device and method not only can reflect the bending deflection of the ball screw in real time, but also save a lot of cost.
Description
technical field [0001] The invention relates to a ball screw testing device and method, in particular to a ball screw bending deflection testing device and a testing method thereof. Background technique [0002] Now entering the 21st century, modern machine tools are increasingly developing toward automation, high speed, precision, flexibility, and intelligence (Zhang Bolin. High speed and application of machining centers [J]. World Manufacturing Technology and Equipment Market, 2002, 01: 35-39+8.). As one of the important development directions of machine tools, precision not only affects the performance of the machine tool itself but also affects the quality of the processed parts. Ball screw is one of the main transmission parts of CNC machine tools, and its transmission accuracy directly affects the accuracy of the machine tool. Such as figure 1 As shown, there are errors in the manufacturing, installation and working process of the screw, resulting in bending deflect...
Claims
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IPC IPC(8): G01M5/00
CPCG01M5/0058
Inventor 何改云张贺帅孙光明黄灿张大卫
Owner TIANJIN SAIXIANG TECH