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Screwing machine based on servo system

A servo system and tightening machine technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of incompetence of air guns, large noise and dust, low assembly efficiency, etc., and achieve compact size of tightening device and large reduction ratio , the effect of system stability

Inactive Publication Date: 2005-04-06
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impact part is the key component to achieve torque amplification and overload protection. Since the torque amplification is realized by the impact couple, there is a lot of noise and dust on site, and the working environment for workers is poor.
The operator holds the constantly shaking air gun and can only tighten one bolt at a time, which makes the assembly efficiency very low
For a group of bolts with the same tightening degree requirements, it is difficult to meet the requirements because the tightening degree is artificially controlled.
For bolts with very large tightening torque or high tightening precision control, the air gun is not competent

Method used

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  • Screwing machine based on servo system
  • Screwing machine based on servo system
  • Screwing machine based on servo system

Examples

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Embodiment Construction

[0018] see figure 1 In this embodiment, a servo motor is used as the driving mechanism 18, and a reduction mechanism 17 and a torque sensor 16 are provided between the driving mechanism 18 and the output mechanism 15.

[0019] see figure 2 , Fig. 3, present embodiment deceleration mechanism adopts two-stage deceleration.

[0020] The first stage is a planetary gear train, including a sun gear 2, a planet carrier 3, three planetary gears I4, six pin shafts I6, an internal gear I5 and related bearing components. The wheel shaft of its sun gear 2 is directly connected with the motor, the planetary gear 14 meshes with the sun gear 2 and the internal gear 1, and its planet carrier 3 is output.

[0021] The second stage is transmission with less tooth difference, specifically two-tooth difference transmission, including 1 eccentric shaft 9, 1 support disc 7, 2 planetary gears II 8, 6 pin shafts II 11, and 1 internal gear II 10 and related bearing components. Wherein, the intern...

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Abstract

The invention relates to screw thread screw-up machine based on servo system. Its features are that the servo motor is used as the driving mechanism. Reducing mechanism and toque sensor are set between the driving and output mechanism. The reducing mechanism is adopted two grade reducing; the first grade is planet gear train; the second grade is low tooth difference driving. It is adopted dynamic toque sensor; one end of the strain axis of the sensor is directly connected to the output end of the reducing mechanism; the other end is directly connected to the spline housing used as the driving input in the output mechanism. The invention possesses high assembling efficiency and high assembling precision, especially suits to motor dom, can realize relatively precise control to the screwing up of the bolt.

Description

Technical field: [0001] The invention relates to a tightening tool for tightening threaded connections. Background technique: [0002] In automobile manufacturing enterprises, most of the automobile parts are connected by bolts, and a large number of bolts need to be tightened. The traditional tightening tool is an air gun, which uses compressed air as the working medium to tighten and disassemble bolts. It is mainly composed of three parts: air distribution chamber, air motor and impact part. The pneumatic engine outputs torque under the drive of compressed air, one end of the impact part is connected with the engine rotor through a spline, and the other end drives the bolt to rotate to tighten or loosen the bolt. The impact part is the key component to achieve torque amplification and overload protection. Since the torque amplification is realized by the impact couple, there is a lot of noise and dust on site, and the working environment for workers is poor. The operato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06
Inventor 林巨广江吉彬马振飞何元祥任永祥卫道柱
Owner HEFEI UNIV OF TECH
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