High-precision tensioning device

A tensioning device, high-precision technology, applied in the direction of clamping device, positioning device, clamping, etc., can solve problems such as hub tilt, processing size out of tolerance, etc.

Active Publication Date: 2016-08-24
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If several contacts cannot act on the inner hole of the hub at the same time,

Method used

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Example Embodiment

[0018] Example 1

[0019] The details and working conditions of the device proposed according to the present invention will be described in detail below with reference to the accompanying drawings.

[0020] This embodiment proposes a new type of tensioning mechanism, which is installed as figure 1 As shown, the high-precision tensioning device 2 of the present invention passes through the inner holes of the hub processing base 3 and the hub 4, and is fixed on the base 1. Mainly consists of stepping motor 2-6, encoder 2-5, harmonic reducer 2-7, turntable 2-2, connecting rod 2-3, contact 2-4, force sensor 2-12, turntable connector 2 -8, washer 2-10, nut 2-9, bolt 2-14, set screw 2-13, shell 2-1 and end cover 2-11. The back end of the stepping motor 2-6 is connected with the encoder 2-5, and the output end is connected with the harmonic reducer 2-7. The harmonic reducer 2-7 is fixed to the internal structure of the housing 2-1 by bolts 2-14 On the upper side, the output shaft is con...

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Abstract

The invention provides a high-precision tensioning device. The high-precision tensioning device is composed of a stepping motor (2-6), an encoder (2-5), a harmonic reducer (2-7), a rotating disc (2-2), a connecting rod (2-3), a contact (2-4), a force sensor (2-12), a rotating disc connecting piece (2-8), a spacer (2-10), a nut (2-9), a bolt (2-14), a fastening screw (2-13), a shell (2-1) and an end cover (2-11). The tensioning device disclosed by the invention can realize closed-loop control of tensioning force and is used for improving the tensioning precision. If the processing and assembling error meets the design requirement, three contacts can be stably and synchronously tensioned, and the wheel hub positioning precision is improved. According to the invention, synchronous movement of the three contacts is realized by adopting a simple crank block mechanism, the closed-loop control of tensioning force is realized by adopting universal components and parts, the adjustment precision can reach extremely high degree, and the machining precision requirement of the existing wheel hub is met.

Description

technical field [0001] The invention relates to a tensioning device, in particular to a high-precision tensioning device used for tightening the central hole of the wheel hub during the machining process of the aluminum alloy wheel hub of the automobile. Background technique [0002] During the machining process of the automobile hub, the center hole of the hub needs to be clamped with a tensioning device. Due to the high machining accuracy requirements of the hub, this necessarily requires the tensioning device to have good accuracy. [0003] On the one hand, during the processing of the hub, a tensioning device is required to provide stable tension. If the tightening force is less than a certain value, the hub cannot be clamped well, and loosening may occur during processing, which will seriously affect the processing quality of the hub; if the tightening force is greater than a certain value, the hub will become elastic Deformation or even plastic deformation directly a...

Claims

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Application Information

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IPC IPC(8): B23B31/40
CPCB23B31/40B23B31/16B23B2260/076B23B2260/128B23Q17/005Y02P70/10B23Q3/14B23Q2703/06Y10T279/19
Inventor 周瑞晓于志远刘鸣华刘会莹刘伟东罗凤宝李登尧
Owner CITIC DICASTAL
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