Multi-section bending radius numerical-control die-free bending shaping method and equipment

A technology of bending radius and forming equipment, which is applied in the direction of heat exchange equipment, etc., can solve the problem that the arc processing of multiple sections with different bending radii is difficult to realize, and achieve the effect of avoiding overturning and avoiding wear

Inactive Publication Date: 2015-07-15
无锡凯博易机电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the unique multi-section arc processing with different bending radii is difficult to realize in molded bending. The bending path design of the present invention solves this problem very well.

Method used

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  • Multi-section bending radius numerical-control die-free bending shaping method and equipment
  • Multi-section bending radius numerical-control die-free bending shaping method and equipment
  • Multi-section bending radius numerical-control die-free bending shaping method and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the principle diagram of the method of the present invention is shown in the figure: the workpiece is divided into three parts: the holding part W1, the bending part L, and the holding part W2. The holding part W1 is clamped with a fixed chuck, and the holding part W2 is clamped with a moving chuck. The bending part L is from the end B0 of the fixed chuck to the head end A0 of the moving chuck. Point C is the midpoint of the moving chuck after bending. The center of the moving chuck moves from C0 to Ci, and then to point C. The radius of curvature Ri is the radius of curvature when the bending angle is θi. figure 1 The middle O1, O2, and O3 are the centers of the circle when the radius of curvature is R1, R2, and R3, respectively. figure 1 The middle O1, O2, and O3 are the centers of the circle when the radius of curvature is R1, R2, and R3, respectively. Therefore, as long as you know the start and end positions of the workpiece, and the radi...

Embodiment 2

[0063] This embodiment provides a dieless bending forming equipment, which includes a translational chuck and a rotating chuck, a driving device, a bending platform, and a numerical control system. Such as Figure 2-3 As shown in the figure: 1: base, 2: sliding platform, 3: translational chuck, 4: rotating chuck, 7: guide rail, 8: screw connection block, 9: screw, 10: screw support seat , 11: coupling, 12: reducer, 13: servo motor. Among them: the base 1, the sliding platform 2, and the guide rail 7 constitute the bending platform; the screw connecting block 8, the screw 9, the screw support 10, the coupling 11, the reducer 12, and the servo motor 13 constitute the driving device.

[0064] The guide rail 7 is arranged on the base 1 and the sliding platform 2. The guide rail on the bottom plate 1 and the guide rail on the sliding platform are perpendicular to each other, and the translational chuck 3 is connected with the screw 9 on the sliding platform 2 through the screw connec...

Embodiment 3

[0068] In another embodiment of the present invention, the moldless bending forming equipment used is such as Figure 4 As shown, the difference from Embodiment 2 lies in: two rails parallel to the Y-direction are installed on the base 1 to support and guide the Y-direction linear movement of the sliding platform 2, and two parallel to the front are installed on the sliding platform 2. The guide rail is used to support and guide the linear movement of the translational chuck in the X direction. There is a sprocket with a small modulus in the reduction box 6, and the large sprocket under the chuck 4 is driven by the chain to rotate the chuck 4.

[0069] Such as Figure 5 As shown, the working steps of the equipment are: pass the workpiece through the translational chuck 3, then clamp the workpiece, and then pass through the rotating chuck 4, control the speed of the servo motor according to the numerical control program, and then control the ball screw and rotation The precise rota...

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Abstract

The invention provides a multi-section bending radius numerical-control die-free bending shaping method and equipment. The equipment comprises a translational chuck, a rotating chuck, a driving device, a bending platform and a numerical control system, a clamping device is mounted on each of the translational chuck and the rotating chuck, the translational chuck is used for realizing horizontal motion of a workpiece in two orthogonal directions, the rotating chuck is used for realizing rotating angle motion of the workpiece, the driving device is used for driving the translational chuck and the rotating chuck which are mounted with the clamping devices to correspondingly move, the bending platform is used for fixing the translational chuck and the rotating chuck and also serves as a working platform for bending the workpiece, and the numerical control system determines a moving track program of the translational chuck and the rotating chuck according to the workpiece to be bent and controls the driving device according to the program to control the clamping devices to move according to set tracks. By the multi-section bending radius numerical-control die-free bending shaping method and the equipment, no bending die is needed when a heat exchanger is bent, and flexible bending of the workpiece is realized by controlling moving tracks of clamps clamping the workpiece; and die-free bending with multiple bending radiuses can be realized.

Description

Technical field [0001] The invention relates to a specific technology of a dieless bending forming process, in particular to a numerical control dieless bending forming process suitable for heat exchangers, in particular to the bending of multiple sections of workpieces with different bending radii. Background technique [0002] The bending and forming process of materials is widely used in the production process of social life, especially the bending and forming of heat exchangers are widely used in transportation, construction, electric power, air conditioning, petroleum, chemical, aviation, aerospace, and other industrial sectors. application. [0003] The bending process of the heat exchanger is currently mostly realized by the method of bending with a mold, and the radius of the bending mold is the radius of the material being bent. In order to realize this process, it is necessary to manufacture a high-precision bending die, and after a long period of use, the bending die wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/02B21D11/00
Inventor 张卿卿张志伟唐鼎李大永彭颖红韩维建
Owner 无锡凯博易机电科技有限公司
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