A digital detection device for pretightening force used in the feeding system of CNC machine tools
A feed system, CNC machine tool technology, used in measuring/indicating equipment, metal processing mechanical parts, metal processing equipment, etc., can solve the problem of measurement accuracy impact, and achieve long-term reliable work, high sensitivity and high positioning accuracy The effect of improving, improving sensitivity and accuracy
Inactive Publication Date: 2016-06-01
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
However, these existing technologies still adopt the pre-stretching installation of the ball screw pair, and perform stretching assembly according to the system pre-tightening force provided by the ball screw pair based on experience. It is necessary to disassemble the bearing and the cushion sleeve to adjust the gap. Moreover, the measurement accuracy is easily affected by the rigidity changes of multiple subsystems of the feed system
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[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0023] figure 1 It is a schematic diagram of the pre-tightening force detection device according to the present invention when it is applied to a CNC machine tool feed system figure 2 It is a schematic diagram of the overall structure of the preload detection device constructed according to the preferred embodiment of the present invention. Such as figure 1 with figure 2 As shown in the figure, the...
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The invention discloses a digital pretightening force detection device used for a numerically-controlled machine tool feeding system. The digital pretightening force detection device comprises a pressure sensor, a signal amplifying and conditioning unit, a digital-analog conversion unit and a display unit. The pressure sensor is arranged between a bearing pack and a locking unit and a spacer bush and is used for detecting pretightening force borne by the bearing pack in real time and outputting corresponding analog signals, wherein the bearing pack is used for supporting a feeding system ball screw assembly, and the locking nut is used for applying pretightening force. The signal amplifying and conditioning unit is used for amplifying the analog signals output by the pressure sensor and carrying out filtering processing on the analog signals. The digital-analog conversion unit is used for carrying out digital-analog conversion on the analog signals formed after amplifying and filtering processing and carrying out displaying through the display unit. The digital pretightening force detection device is compact in structure and convenient to control, can directly acquire pretightening force data of the numerically-controlled machine tool feeding system, and has the advantages of being high in precision and responsivity, wide in application range and the like.
Description
Technical field [0001] The present invention belongs to the technical field of numerical control machine tools, and more specifically, relates to a pre-tightening force digital detection device for a feed system of a numerical control machine tool. Background technique [0002] For CNC machine tools, the feed system, as one of the key components, plays a role in precise transmission and positioning. The sensitivity and positioning accuracy of the CNC machine tool feed system are the main indicators that reflect the quality of a CNC machine tool. Achieving better sensitivity and higher positioning accuracy is the focus of the industry. It is also the focus of improving manufacturing efficiency, ensuring processing quality, and reducing resource consumption. , Seek the direction of technology research and development for enterprise development. Because the ball screw pair has the characteristics of low friction loss, high transmission efficiency, smooth movement without creeping, ...
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IPC IPC(8): B23Q17/00
CPCB23Q17/007
Inventor 王书亭刘涛涂灏刘巍张玉成刘俊龙陈凤姣
Owner HUAZHONG UNIV OF SCI & TECH