CN-224231141-U - Steel wire tension detection mechanism for multi-strand spring numerical control machine tool

Abstract

The utility model discloses a steel wire tension detection mechanism for a multi-strand spring numerical control machine tool, which comprises a tension detection assembly, wherein the tension detection assembly comprises a tension sensor fixedly connected in a cradle, a steel wire guide wheel used for guiding a steel wire rope is connected to the tension sensor, a tension detection balance assembly comprises a balance rod connected in the cradle, one end of the balance rod is movably connected to the tension sensor, and the other end of the balance rod is connected with a balancing weight with an adjustable gravity center position.

Inventors

• YANG WENHAN
• ZHAO TINGHUI
• CHEN DONG
• ZHAO YANQIN
• ZHANG KAI
• LU YUSHENG

Assignees

• 扬州大学

Dates

Publication Date

20260512

Application Date

20250912

Claims (8)

1. 1. A steel wire tension detection mechanism for a multi-strand spring numerical control machine tool is characterized by comprising, The tension detection assembly comprises a tension sensor fixedly connected in the cradle, and a steel wire guide wheel for guiding the steel wire rope is connected to the tension sensor; The tension detection balance assembly comprises a balance rod connected in the cradle, one end of the balance rod is movably connected to the tension sensor, and the other end of the balance rod is connected with a balancing weight with an adjustable gravity center position.
2. 2. The steel wire tension detecting mechanism for a multi-strand spring numerical control machine tool according to claim 1, wherein the other end of the balancing rod is fixedly connected with a balance weight adjusting screw, the balance weight is connected to the balance weight, a lower nut is connected to the balance weight adjusting screw on the lower side of the balance weight in a threaded manner, and an upper nut is connected to the balance weight adjusting screw on the upper side of the balance weight in a threaded manner.
3. 3. The steel wire tension detecting mechanism for a multi-strand spring numerical control machine tool according to claim 2, wherein a counterweight adjusting piece is connected to a counterweight adjusting screw rod between the upper side of the lower nut and the lower side of the counterweight.
4. 4. The steel wire tension detecting mechanism for a multi-strand spring numerical control machine tool according to claim 2, wherein the adjusting screw is connected to the balance bar in a threaded manner, the upper end of the adjusting screw is abutted against the upper side of the balance bar, and the adjusting screw on the lower side of the balance bar is connected with a fixing nut in a threaded manner.
5. 5. The steel wire tension detection mechanism for a multi-strand spring numerical control machine tool according to any one of claims 1 to 3, wherein the cradle is connected with a main shaft, the main shaft is rotatably connected to the balance bar through a support bearing, one side of the support bearing in the axial direction is abutted against a step of the balance bar, the balance bar on the other side of the support bearing in the axial direction is connected with an end cover, the main shaft is in threaded connection with a fastening nut, and the fastening nut is abutted against the other side of the support bearing in the axial direction.
6. 6. The steel wire tension detecting mechanism for a multi-strand spring numerical control machine tool of claim 5, wherein the end cover is provided with a plurality of connecting holes, and the balance rod is provided with a plurality of connecting counter bores which are in one-to-one correspondence with the connecting holes.
7. 7. The steel wire tension detecting mechanism for the multi-strand spring numerical control machine tool of claim 5, wherein the main shaft is connected to the cradle through threads, a connecting nut is connected to the main shaft outside the cradle through threads, and the connecting nut is abutted to the outer wall of the cradle.
8. 8. The steel wire tension detection mechanism for a multi-strand spring numerical control machine tool according to any one of claims 1-3, wherein a connecting support is fixedly connected to the inner side of the cradle, a tension sensor is fixedly connected to the connecting support, a support is fixedly connected to the tension sensor, the support is fixedly connected to an inner ring of a mounting bearing, and a steel wire guide wheel is connected to an outer ring of the mounting bearing.

Description

Steel wire tension detection mechanism for multi-strand spring numerical control machine tool Technical Field The utility model relates to the technical field of manufacturing of multi-strand spiral springs, in particular to a steel wire tension detection mechanism for a multi-strand spring numerical control machine tool. Background The multi-strand spring is a spiral spring formed by winding a steel cable consisting of a plurality of strands of steel wires. As a high performance basis, multi-strand springs are widely used in automatic weapons and aircraft engines. But the processing process is complex, and the control requirement of the steel wire lay length is high. How to improve the stability of the tension control of the steel wire is a key for ensuring the processing quality of the multi-strand spring steel cable and the performance of the multi-strand spring. In the prior art, when the tension of a steel wire rope in a multi-strand spring numerical control machine tool is measured, the related components in a tension measuring system for measuring the tension of the steel wire rope can generate gravity and centrifugal force, the influence of the gravity and the centrifugal force on the tension is eliminated through an algorithm, but the accuracy of tension measurement and the stability of tension control are restricted by interpolation errors of a main shaft phase encoder. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. The present utility model has been made in view of the above and/or problems occurring in the prior art wire tension measurement. Therefore, the utility model aims to provide a steel wire tension detection mechanism for a multi-strand spring numerical control machine tool, which can eliminate the influence of the gravity and the centrifugal force of a tension sensor on the measurement of the steel wire tension and improve the processing quality of the multi-strand spring. In order to solve the technical problems, the utility model provides a steel wire tension detection mechanism for a multi-strand spring numerical control machine tool, which comprises, The tension detection assembly comprises a tension sensor fixedly connected in the cradle, and a steel wire guide wheel for guiding the steel wire rope is connected to the tension sensor; The tension detection balance assembly comprises a balance rod connected in the cradle, one end of the balance rod is movably connected to the tension sensor, and the other end of the balance rod is connected with a balancing weight with an adjustable gravity center position. The balance weight is characterized in that one end of the balance rod is provided with a fixed hole which is convenient to connect with a shell of the tension sensor, the position of the balance weight center in the height direction is adjusted to enable the balance weight to move up and down, when the balance weight moves to a proper position in the height direction, namely, the balance weight center is at the same height as the center of the tension sensor, the position of the balance weight in the height direction is stopped to enable the balance weight to be fixed relative to the balance weight, the gravity center of the balance weight in the front-back direction is adjusted to enable the balance weight to slide back and forth along the shell of the tension sensor, when the balance weight moves to a proper position, namely, the gravity center of the balance weight connected with the balance weight is overlapped with the position of the gravity center of the tension sensor in the front-back direction, the fixed hole and the shell are screwed by using a fixed screw, so that the position of the balance weight in the front-back direction is fixed, in addition, the balance weight of the whole balance weight of the balance weight part can be prepared, the tension and the centrifugal force of the tension sensor are balanced, the precision and the stability of tension control are improved, and the quality of cold-winding steel ropes is improved. The utility model relates to a wire tension detection mechanism for a multi-strand spring numerical control machine tool, which is characterized in that the other end of a balance rod is fixedly connected with a balance weight adjusting screw, a balance weight is connected to the balance weight, a lower nut is connected to the balance weight adjusting screw at the lower side of the balance weight in a threaded manner, and an upper nut is connected to the balance weight adjusting screw at the upper side of the balance weight in a threaded manner. As a preferable scheme of the steel wire tension detection mechanism f