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Method for manufacturing viscoelastic cushion and method for grinding plane of thin-sheet workpiece

A production method and viscoelastic technology, applied in the field of grinding processing, can solve problems such as workpiece deformation, and achieve the effects of reducing deformation problems, good fit, and good resistance to deformation

Active Publication Date: 2017-06-27
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] In order to solve the shortcomings of the above-mentioned technologies, the present invention proposes a method for improving the flatness of ferromagnetic thin plate parts when a surface grinder grinds them. The method mainly uses a viscoelastic pad to solve the problem of using a surface grinder to grind thin plate workpieces. Workpiece deformation and vibration problems, at the same time reduce the influence of initial internal stress and processing stress through the grinding process, improve the flatness of the workpiece and the stability of the grinding process, this method is simple to operate, the effect is obvious, and it is suitable for thin plate parts of any shape surface grinding

Method used

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  • Method for manufacturing viscoelastic cushion and method for grinding plane of thin-sheet workpiece

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[0024] specific implementation plan

[0025] The patent of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The shear thickening fluid is liquid under normal conditions and has fluidity. When it is loaded at a high speed, it shows a hard solid state. In addition, Kevlar, aramid fiber cloth product, has high strength properties. The combination of the two is especially suitable for the preparation of The viscoelastic pad required by the present invention is used in the grinding of thin-plate workpieces on horizontal axis and rectangular table surface grinders to reduce the clamping deformation of the workpiece and suppress the grinding vibration, thereby improving the flatness and surface quality of the processed workpiece .

[0027] Such as figure 1 As shown, before the experiment, a three-layer Kevlar cloth 4 with a thickness of less than 1.5mm soaked in a polyethylene waterproof sealed ...

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Abstract

The invention discloses a method for manufacturing a viscoelastic cushion and a method for grinding a plane of a thin-sheet workpiece. The grinding method comprises the following steps that the composite viscoelastic cushion is prepared by using a shear thickening solution and a plurality of layers of thin cloth and is placed between an electromagnetic chuck and the workpiece, so that deformation of the workpiece in a grinding machining process is reduced; and in addition, an annealing process before grinding and the demagnetization and stress re-balancing strategy in the grinding process are carried out, so that the influence of internal initial stress release of the workpiece and machining stress introduction on the deformation of the workpiece is reduced, and the high-precision plane grinding machining of the surface of the thin-sheet workpiece is realized.

Description

technical field [0001] The invention relates to a method for making a viscoelastic pad and a method for surface grinding of thin-plate workpieces, belonging to the field of grinding processing. Background technique [0002] At present, low stiffness parts have a wide range of applications, and their dimensional accuracy and shape accuracy often have a great impact on the performance of parts or machines. For example, thin or narrow workpieces such as gaskets, friction plates, and templates, as well as optical components such as ultra-thin mirrors and silicon mirrors with low rigidity. Thin-plate workpieces are typical low-rigidity parts. When grinding and processing thin-plate parts, the impact of clamping deformation on their flatness is very obvious. For example, when grinding a thin plate, the thin plate is fixed on the workpiece table by the suction force of the electromagnetic chuck. If the initial shape of the thin plate is not flat, deformation will inevitably occur ...

Claims

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Application Information

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IPC IPC(8): B24B7/00B24B41/00B32B9/02B32B27/02
CPCB24B7/00B24B41/00B32B5/26B32B2250/20B32B2262/02B32B2262/06B32B2262/08
Inventor 周平赵炳尧闫英康仁科郭东明
Owner DALIAN UNIV OF TECH
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