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Numerical control precision progressive forming device and precision progressive forming method for plates

A progressive forming and precision technology, applied in the field of sheet metal processing, can solve the problems of slow three-coordinate measurement, measurement of sheet metal springback and warpage, and large geometric error of sheet metal, so as to avoid occupying the press and reduce material loss , The effect of saving development costs

Active Publication Date: 2011-10-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current measurement technology is concerned, the three-coordinate measurement is slow and needs to be carried out on a special measuring machine. CCD measurement is mainly used for the physical size of the object, and it is difficult to measure the springback and warpage of the sheet in the depth direction.
[0005] Aiming at the problem that the sheet metal geometric error is relatively large in the current sheet metal incremental forming, the present invention proposes to integrate the incremental forming and laser measurement into one device based on a compensation optimization algorithm to realize the flexible moldless incremental forming of the sheet metal and the return of the sheet metal. elastic compensation

Method used

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  • Numerical control precision progressive forming device and precision progressive forming method for plates
  • Numerical control precision progressive forming device and precision progressive forming method for plates
  • Numerical control precision progressive forming device and precision progressive forming method for plates

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Embodiment 1

[0024] Such as figure 2 with image 3 As shown, this embodiment includes: a five-axis CNC forming machine tool 1, a sheet metal fixture 2, a data acquisition system 3 and an optimization control module 4, wherein: the sheet material fixture 2 is arranged on the workbench of the machine tool, and the data acquisition system 3 is connected to the machine tool respectively. The five-axis CNC forming machine tool 1 and the optimization control module 4 are connected and transmit processing parameters and control instructions.

[0025] The end of the main shaft of the five-axis CNC forming machine tool 1 is provided with a forming indenter 5 or a laser ranging system 6, which is connected to the data acquisition system 3 and transmits laser ranging signals.

[0026] The blank holder 2 is composed of a blank holder 7 , a hollow support platform 8 , a pillar 9 and a base 10 , wherein the blank is fixedly arranged between the blank holder 7 and the support platform 8 .

[0027] The...

Embodiment 2

[0035] Such as figure 2 , 3 Shown, the present embodiment processing method comprises the following steps:

[0036] 1) The product size is 300mm×300mm, and the aluminum plate with a thickness of 1mm is used;

[0037] 2) Use the CAD function of NX6.0 software to carry out CAD modeling of sheet metal parts, and use the CAM function of the software to generate processing paths for sheet metal;

[0038] 3) A ball forming indenter 5 with a diameter of 10mm is set on the five-axis forming unit;

[0039] 4) Cut the sheet into a 320mm×320mm square, and use the blank holder 7 to press the sheet around 10mm;

[0040] 5) Input the CNC machining trajectory code into the five-axis machine tool, and set the forming indenter 5 to the machining coordinates;

[0041] 6) Start the machine tool for progressive forming;

[0042] 7) After the forming is completed, the five-axis forming unit is replaced with a laser measuring device;

[0043] 8) Start the machine tool to scan by the machinin...

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Abstract

The invention discloses a numerical control precision progressive forming device and a precision progressive forming method for plates, and belongs to the technical field of plate processing. The device comprises a five-axis numerical control forming machine, a plate fixture, a data acquisition system and an optimal control module, wherein the plate fixture is arranged on a worktable of the machine; the data acquisition system is connected with the five-axis numerical control forming machine and the optimal control module respectively, and transmits processing parameters and control instructions; the tail end of a spindle of the five-axis numerical control forming machine is provided with a forming pressure head or a laser ranging system; and the laser ranging system is connected with thedata acquisition system and transmits a laser ranging signal. By alternately using the forming pressure head and the laser ranging system, cyclic operation including plate progressive forming, error measurement and formed path modified forming is completed. The device can save development cost of a die, avoid occupying a press, ensure the dimensional accuracy of sheet metal parts, and reduce material loss due to geometric errors in actual production.

Description

technical field [0001] The invention relates to a device and method in the technical field of sheet material processing, in particular to a numerically controlled precision incremental forming device and a precision incremental forming method for sheet metal. Background technique [0002] Sheet metal has a wide range of applications in industries such as aviation, aerospace, automobiles, ships and home appliances. The traditional sheet metal stamping forming method is suitable for mass production and processing, but for small batches, multi-variety and sample trial production processing, the traditional sheet metal stamping forming technology requires the development of molds and special presses for forming, so the manufacturing cost significantly increased. Moreover, a sheet metal product needs one or several pairs of molds to process the required shape, which lacks the flexibility of processing. Sheet metal incremental forming has become an effective technology for the m...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D43/00B21C51/00
Inventor 陆彬曹简陈军
Owner SHANGHAI JIAO TONG UNIV
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