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Pyramid-type solid grinding tool for grinding metallic middle frame of mobile phone and preparation method

A mobile phone middle frame and pyramid-shaped technology, which is applied in metal processing equipment, grinding/polishing equipment, abrasives, etc., can solve the problems that affect the popularization and wide-scale application of metal mobile phone middle frames, high processing difficulty, and short grinding life. Achieve uniform and consistent grinding effect, improve grinding efficiency, and achieve high grinding efficiency

Inactive Publication Date: 2018-09-04
河北思瑞恩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum alloy has always been the main material of the middle frame of mobile phones, and its processing technology is relatively mature. However, with the rise of 3D glass and ceramic cover plates, the requirements for the strength of the middle frame are getting higher and higher. Stainless steel, steel and aluminum High-strength metals such as composite materials and titanium alloys are gradually gaining popularity; this type of metal has excellent fatigue resistance and strength, but is also difficult to process, and it needs to be polished to reflect a good appearance
At present, the average yield rate of stainless steel and titanium alloys in the industry is only 30-40%, which greatly affects the popularity and wide-scale application of metal mobile phone middle frames
[0003] In order to improve the appearance of the metal mobile phone middle frame, it is necessary to polish the base shell of the metal mobile phone middle frame. During the grinding process, a grinding device must be used with abrasive materials. However, most of the existing grinding consumables have low grinding efficiency, short grinding life, Disadvantages of needing frequent replacement

Method used

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  • Pyramid-type solid grinding tool for grinding metallic middle frame of mobile phone and preparation method
  • Pyramid-type solid grinding tool for grinding metallic middle frame of mobile phone and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A pyramid-shaped three-dimensional abrasive tool for grinding the middle frame of a metal mobile phone, its overall structure is as follows figure 1 As shown, it includes a soft base material arranged on the bottom layer, on which a number of upwardly protruding pyramids are arranged, and the pyramids are formed after solidification of diamond slurry. Among them, the soft substrate adopts TPU film; the pyramids are solid quadrangular pyramids, which are regularly arranged on the soft substrate, the ratio of the pyramid base to the height is 1:1, and the ratio of the gap between the adjacent pyramid bases to the pyramid base is 0.1~2.

[0032] The diamond slurry is prepared from the following components in parts by weight: 55 parts of diamond abrasive, 35 parts of photocurable adhesive, 20 parts of diluent, 5 parts of photoinitiator, and 5 parts of auxiliary agent. Among them, the diamond abrasive is single crystal diamond, the light-curing adhesive is polyurethane acry...

Embodiment 2 to Embodiment 5

[0040] The difference between Embodiment 2 to Embodiment 5 and Embodiment 1 lies in the components and parts by weight in the diamond slurry, and the specific components are shown in the table below.

[0041]

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Abstract

The invention discloses a pyramid-type solid grinding tool for polishing a metallic middle frame of a mobile phone. The pyramid-type solid grinding tool comprises a soft substrate disposed on a bottomlayer, wherein a plurality of pyramids projecting upwardly and formed by curing a diamond slurry are arranged on the soft substrate; the diamond slurry is prepared from, by weight, 30-60 parts of diamond abrasive, 30-60 parts of photocurable adhesive, 20-40 parts of diluent, 0.5-5 parts of photoinitiator and 1-5 parts of adjuvant. The present invention employs intaglio printing and photocuring techniques to coat diamond slurry onto a mold having a pyramid structure, after photocuring, to a soft substrate to obtain a soft base diamond abrasive tool having a pyramid-type stereo structure a softsubstrate diamond grinding tool having a pyramid-type solid structure is obtained by coating a mold having a pyramid structure with the diamond slurry, performing photocuring, and transferring the diamond slurry subjected to photocuring to the soft substrate with intaglio printing and photocuring techniques, and the grinding tool can be applied to polishing operation in a high-strength metallic middle frame of the mobile phone, and the processing cost can be reduced on the basis of bringing convenience for processing, improving product polishing effect and increasing processing yield.

Description

technical field [0001] The invention relates to the technical field of high-strength metal mobile phone middle frame production, in particular to an abrasive tool used for grinding the metal mobile phone middle frame. Background technique [0002] In view of the demand for non-metal front and rear covers that will be adopted in the 5G era and the possible appearance of double-sided glass / ceramic / full-screen mobile phones, higher requirements are put forward for the mobile phone frame, and high-strength stainless steel middle frames are also a trend. Aluminum alloy has always been the main material of the middle frame of mobile phones, and its processing technology is relatively mature. However, with the rise of 3D glass and ceramic cover plates, the requirements for the strength of the middle frame are getting higher and higher. Stainless steel, steel and aluminum High-strength metals such as composite materials and titanium alloys are gradually gaining popularity; this type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34B24D3/00B24D7/18B24D18/00
CPCB24D3/28B24D3/002B24D3/34B24D7/18B24D18/0009
Inventor 刘利军吕敬文崔策
Owner 河北思瑞恩新材料科技有限公司
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