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Self-adaptive control incremental forming method

An adaptive control, incremental forming technology, applied in the field of machining, can solve problems such as increased processing time and cost, reduced surface quality of parts, and flexibility and operability that do not conform to incremental forming of sheet materials, to improve forming accuracy and The effect of forming quality

Active Publication Date: 2021-03-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at the same time, the surface quality of parts is reduced, and the processing time and cost are correspondingly increased, which is not in line with the flexibility and operability of incremental forming of sheet metal. Therefore, an adaptive control incremental forming processing method is developed to improve this situation.

Method used

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  • Self-adaptive control incremental forming method

Examples

Experimental program
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Embodiment

[0033] Step 1: Put the forming tool with a spherical working surface into the tool holder on the CNC machine tool, and the spherical end of the forming tool is against the metal sheet to be processed, and installed at the end of the forming tool for real-time detection of the processing process Piezoelectric sensors for axial force and radial force changes of the middle forming tool head;

[0034] Step 2: When the forming tool is working, the spherical working surface is pressed into the direction of the metal sheet, and the depth is the axial feed amount ν;

[0035] Step 3: Follow the contour line along the conical section of the metal sheet. After completing the entire section path, the forming tool is pressed again to the depth of the axial feed ν to carry out the next contour line processing, such as figure 1 , figure 2 As shown, the spherical surface at the end of the forming tool is pressed into the metal sheet to a certain depth, which is equal to the designed axial f...

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Abstract

The invention discloses a self-adaptive control incremental forming method. According to the method, machining parameters are changed according to local strain, change of the machining parameters comprises the steps of changing the diameter of a tool head, the running speed of the tool head and the layer-by-layer feeding amount in real time, the forming precision and forming quality of machined parts are improved within the shortest machining time, and the flexibility and operability of an incremental forming machining process are fully utilized; and according to the method, different self-adaptive incremental forming machining schemes are formulated by referring to different forming materials, and basic parameters of the schemes comprise the tensile strength and the shear strength of thematerials.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to an adaptive control progressive forming method that utilizes a numerically controlled machine tool head to extrude and deform a sheet material layer by layer so as to achieve a required part shape. Background technique [0002] The advantage of incremental forming technology is that it can shape the sheet without complex and high-cost tools or equipment, which greatly reduces the cost and cycle of new product development. However, in the process of incremental forming, sometimes the sheet metal will be partially thinned or cracked due to different reasons, which reduces the forming accuracy and quality of the formed part. Among them, the diameter of the tool head, the running speed of the tool head and the layer-by-layer feed are the key process parameters that affect the quality of the formed part. [0003] The diameter of the tool head affects the surface quality...

Claims

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Application Information

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IPC IPC(8): B21D31/00
CPCB21D31/005
Inventor 顾仲高锦张
Owner SOUTHEAST UNIV
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