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A high-precision tensioning device

A tensioning device, high-precision technology, applied in the direction of clamping device, positioning device, clamping, etc., can solve the problem of wheel hub tilt, machining size out of tolerance and so on

Active Publication Date: 2018-03-06
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, it may cause the hub to tilt, making the final processing size out of tolerance

Method used

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  • A high-precision tensioning device
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Experimental program
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Embodiment 1

[0019] The details and working conditions of the device proposed according to the present invention will be described in detail below in conjunction with 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, gasket 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 to the encoder 2-5, and the output end is connected to the harmonic reducer 2-7, and the harmonic reducer 2-7 is fixed to the internal structure of the shell 2-1 by bolts 2-14 On, its output shaft is then connected with the turntabl...

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Abstract

The invention provides a high-precision tensioning device. The high-precision tensioning device consists of a stepping motor (2-6), an encoder (2-5), a harmonic reducer (2-7), and a turntable (2 ‑2), connecting rods (2‑3), contacts (2‑4), force transducers (2‑12), turntable connectors (2‑8), washers (2‑10), nuts (2‑9 ), bolts (2‑14), set screws (2‑13), housing (2‑1) and end cap (2‑11). The tensioning device of the present invention can realize the closed-loop control of the tensioning force, so as to improve the tensioning precision. As long as the processing and assembly error meets the design requirements, it can ensure that the three contacts are tightened stably and synchronously, and the positioning accuracy of the hub can be improved. The invention adopts a simple crank slider mechanism to realize the synchronous movement of the three contacts, and adopts common components to realize the closed-loop control of the tension force, and its adjustment accuracy can reach a high level, which is enough to meet the needs of the existing wheel hubs. machining accuracy requirements.

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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Patent Type & Authority Patents(China)
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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