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Twin shaft flexible roll-bending machine based on control of feeding force

A technology of feed force and roll bending machine, which is applied in the field of barrel forming equipment and pipe fittings, can solve the problems of uneven material in the working part of the elastic wheel, affecting the forming accuracy of the working section, and different axial forces, and achieves the goal of improving the international Competitive, simple structure, high precision effect

Inactive Publication Date: 2005-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, in this manufacturing method, since the elastic body of the large elastic wheel is made of polyurethane material, there is unevenness in the manufacturing process, and aging will occur after a period of use, which will cause the working part of the elastic wheel to be damaged. Material inhomogeneity exists in the axial direction
When the feed rate control is adopted, although the compression amount between the two axes is consistent in the axial direction, the axial force of the work is not the same, resulting in the difference in bending curvature in the forming work, and the rejection rate is high. At the same time It also seriously affects the forming accuracy of the working section

Method used

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  • Twin shaft flexible roll-bending machine based on control of feeding force
  • Twin shaft flexible roll-bending machine based on control of feeding force
  • Twin shaft flexible roll-bending machine based on control of feeding force

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 shown.

[0025] A two-axis flexible roll bending machine based on feed force control, including a frame 1, a driving roller 2, and a driven roller 3, the driving roller 2 is connected to the frame 1, and the driving wheel 2 is connected to a driving roller driving device 16 The driven roller 3 is connected with the longitudinal driving device 21, the longitudinal driving device 21 and the frame 1 are installed in the casing 22, and the processed workpiece 20 is located between the driving roller 2 and the driven roller 3 and between them Bending and forming under the joint action, the driving roller 2 is composed of a rigid mandrel and an elastic body covered on the rigid mandrel; one end of the driven roller 3 is installed on the support 4 in the longitudinal driving device 21, and the support 4 Connected to one end of the sli...

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Abstract

A dual-axle flexible bending roll machine based on advance force control features that a force sensor is used to feed and actual extrusion force between rigid axle and the axle of elastic roller back to the control system and the extrusion force is then used to control the roll-bending procedure. It is composed of drive roller, driven roller, machine frame, driver of said drive roller, the longitudinal driver for driven roller and force sensor.

Description

technical field [0001] The invention relates to a pipe fitting and barrel molding equipment with a circular cross section and a convex non-circular shape, in particular to a biaxial flexible bending machine based on feed force control. Background technique [0002] As we all know, there are thousands of installation holes on the aircraft, and the processing quality is directly related to the safety of flight. In recent years, in order to improve the fatigue life of the aircraft, aircraft manufacturers have invented a cold extrusion process with slotted bushings to extrude and strengthen these holes. The materials used for slotted bushings are all special stainless steel materials, which are very difficult to manufacture. The traditional rolling technology cannot guarantee its manufacturing accuracy. At present, only a few countries can manufacture this kind of special stainless steel bushings, while my country mainly relies on imports. solve this puzzle. [0003] In additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/20
Inventor 左敦稳王珉阎静黎向锋曹振中徐锋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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