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Ball screw pair transmission device and method capable of achieving automatic pre-tightening

A ball screw pair and transmission technology, which is applied to the transmission, transmission parts, belt/chain/gear, etc., can solve the problems such as affecting the transmission accuracy of the ball screw pair, unable to use manual manual adjustment, affecting the work progress, etc.

Pending Publication Date: 2021-09-07
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are various methods for adjusting the pretightening force of the ball screw, but most of them are based on manual adjustment. During the operation of the ball screw pair, the inventor found that with the operation of the ball screw pair, the main nut and the auxiliary nut The pre-tightening force changes, which affects the transmission accuracy of the ball screw pair. At this time, the main nut and the auxiliary nut of the ball screw pair cannot be adjusted manually because they are in motion, and they need to be stopped for adjustment, which affects the work progress.

Method used

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  • Ball screw pair transmission device and method capable of achieving automatic pre-tightening
  • Ball screw pair transmission device and method capable of achieving automatic pre-tightening
  • Ball screw pair transmission device and method capable of achieving automatic pre-tightening

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Experimental program
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Effect test

Embodiment 1

[0032] A ball screw pair transmission device capable of automatic preload, such as figure 1 As shown, a base 1 is included, and the base adopts a U-shaped structure, including a first base part arranged horizontally and a second base part vertically fixed at both ends of the first base part. The base is used as a supporting part for each element of the entire transmission system, and can be installed on the relevant supporting mechanism of the equipment used according to actual needs during use.

[0033] A ball screw pair is installed on the first base part, and the ball screw pair can adopt an existing ball screw structure, including a driving part, and the driving part is used as a power supply device for the ball screw pair. In one embodiment, the driving part is a stepping motor 2, the output shaft of the stepping motor is connected to the lead screw 3 through a coupling, and the stepping motor can drive the rotation of the lead screw.

[0034] In order to ensure the rota...

Embodiment 2

[0064] This embodiment discloses a method for preloading the automatic preloading ball screw transmission described in Embodiment 1:

[0065] The coil is connected to the power supply through the connecting wire, the coil is energized, a magnetic field force is generated between the coil and the magnet, and the magnetic field force drives the rotor to rotate around its own axis. When the rotor rotates, the rotor moves along the axis of the screw, and the rotor passes through the first end cover. Squeeze the butterfly spring, the butterfly spring exerts a reaction force, the reaction force acts on the main nut and the auxiliary nut, and exerts a pretightening force on the main nut and the auxiliary nut, so as to eliminate the transmission gap between the main nut and the auxiliary nut.

[0066] The whole process of adjusting the pretightening force does not require manual operation, which saves time and labor, and has high work efficiency.

[0067] During the working process of...

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Abstract

The invention relates to a ball screw pair transmission device and method capable of achieving automatic pre-tightening. The ball screw pair transmission device comprises a lead screw connected with a driving part, the lead screw is in threaded connection with a main nut and an auxiliary nut, the main nut and the auxiliary nut are both fixedly connected with a workbench, the workbench is in sliding connection with a base, and a positioning part connected with the lead screw is arranged between the main nut and the auxiliary nut. The positioning part is fixed with the main nut, the periphery of the positioning part is fixedly sleeved with a stator, the periphery of the stator is in threaded connection with a rotor, a magnet is arranged in the rotor, a coil capable of being connected with a power source is arranged in the stator, and an elastic piece is arranged between the rotor and the auxiliary nut. According to the ball screw pair transmission device and method capable of achieving automatic pre-tightening, due to a transmission system, real-time adjustment of pre-tightening force in the ball screw pair moving process can be achieved, and the transmission precision is ensured.

Description

technical field [0001] The invention relates to the technical field of ball screw pairs, in particular to a ball screw pair transmission device and method capable of automatic pretensioning. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In the study of modern feed drive systems, ball screws play an important role with their reliability and precision. It can convert rotary motion into linear motion, which is very important in many applications, such as robotics industry, semiconductor, or other precision motion control facilities. [0004] Compared with the traditional screw pair, the ball screw pair uses rolling friction instead of sliding friction, and has the characteristics of small wear, high axial rigidity, low axial clearance, and reversibility. With many balls simultaneously contacting the grooves of the screw, the low-friction transmiss...

Claims

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Application Information

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IPC IPC(8): F16H25/22F16H57/12
CPCF16H25/2209F16H2025/2075Y02P70/10
Inventor 于翰文张云腾姬帅宋现春姜洪奎许向荣张振中
Owner SHANDONG JIANZHU UNIV
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