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Elastic milling and polishing tool for free-form surface machining and manufacturing method of elastic milling and polishing tool

A surface processing and elastic technology, applied in the field of fixed abrasive milling and polishing tools, can solve the problems of poor stability, environmental pollution, environmental impact of waste abrasives, etc. Effect

Inactive Publication Date: 2021-01-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the relatively mature grinding and polishing methods for free-form surface parts include abrasive belt grinding and polishing, magnetorheological polishing, and free abrasive flexible tool head grinding and polishing. The grinding and polishing abrasive belt has a certain width, and its contact with the workpiece is in line contact. The contact wheel is easy to interfere when grinding complex curved blades. The contact wheel is generally made of steel or aluminum as the wheel core, and the outer surface is attached with hard rubber. Its own flexibility It also cannot meet the processing requirements of free-form surfaces
Magneto-rheological polishing can accurately control the amount of material removed from the surface of the workpiece, thereby achieving high-precision processing of the workpiece, but the composition of the polishing fluid is complex, poor in stability, and easy to cause pollution to the environment, which does not conform to the current green manufacturing concept
The free-abrasive flexible tool head grinding and polishing has a good fit to the free-form surface because of its flexible contact with the workpiece, but the material removal rate of the workpiece is low, and the waste abrasive will affect the environment, which does not conform to the concept of green manufacturing.
[0003] These three free-form surface grinding and polishing methods have their advantages and disadvantages, and cannot meet the processing requirements of high efficiency, high flexibility and low damage, and the manufacturing concept of green environmental protection. Toss tool imminent

Method used

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  • Elastic milling and polishing tool for free-form surface machining and manufacturing method of elastic milling and polishing tool
  • Elastic milling and polishing tool for free-form surface machining and manufacturing method of elastic milling and polishing tool
  • Elastic milling and polishing tool for free-form surface machining and manufacturing method of elastic milling and polishing tool

Examples

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Effect test

example 1

[0050]According to the processing requirements of the TC4 titanium alloy workpiece with free-form surface characteristics, select diamond with a particle size of 20-30 microns and mix the other raw materials of the abrasive layer uniformly in proportion, add heat curing agent and accelerator, stir again, and then apply evenly Into the flat mold sprayed with release agent in advance; cover the 0.8mm thick non-woven fabric base layer on the flat mold, cover the mold; heat and press to solidify and form, you can get the abrasive layer and cloth base for the elastic milling and polishing tool Consolidated abrasive pad composed of layers.

[0051]Bond the prepared consolidated abrasive pad with nylon buttons to a 2mm thick sphere with a radius of 100mm on the polyurethane elastic layer, bond the elastic layer to the rigid substrate with crystal glue, and perform milling and polishing on the ABB robot platform TC4 titanium alloy free-form surface workpiece test, milling and polishing pressur...

example 2

[0054]According to the milling and polishing requirements of the fused silica glass workpiece with free-form surface characteristics, select diamond with a particle size of 10-14 microns and other raw materials of the abrasive layer after uniformly mixing in proportion, adding heat curing agent and accelerator, stirring again, and then uniform Apply the ground to a flat mold sprayed with release agent in advance; cover the 0.5mm non-woven fabric base layer on the flat mold and cover the mold; heat and press to solidify to form the abrasive layer and cloth base for the elastic milling and polishing tool Consolidated abrasive pad composed of layers.

[0055]Bond the prepared consolidated abrasive pad to a 2mm thick flat polyurethane elastic layer with resin glue, and bond the elastic layer to the rigid substrate with AB epoxy glue, and mill on a five-axis machining center Test of polishing fused quartz workpiece, milling and polishing pressure is 0.018MPa, electric spindle speed is 650rp...

example 3

[0058]According to the processing requirements of fused silica workpieces with free-form surface characteristics, select diamonds with a particle size of 5-7 microns and other raw materials of the abrasive layer and mix them uniformly in proportion, add the thermosetting agent and accelerator, stir again, and then evenly apply to In the plane mold sprayed with the release agent in advance; cover the 1mm thick non-woven fabric base layer on the plane mold, cover the mold; heat and press to solidify and form, you can get the abrasive layer and cloth base layer for the elastic milling tool Consolidated abrasive pad.

[0059]Bond the prepared consolidated abrasive pad with resin glue to the polyurethane elastic layer of 2mm thick ball with a radius of 80mm, and bond the elastic layer to the rigid substrate with AB epoxy resin glue, and process the five-axis linkage The milling and polishing fused quartz workpiece test was performed on the center. The milling and polishing pressure was 0.01...

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Abstract

The invention discloses an elastic milling and polishing tool for free-form surface machining and a manufacturing method of the elastic milling and polishing tool. The elastic milling and polishing tool for free-form surface machining comprises an abrasive layer, a cloth base body layer, an elastic layer, a rigid base body disc and a connecting rod, and is characterized in that the abrasive layeris directly cured on the cloth base body layer; the cloth base body layer and the elastic layer are connected through a bonding layer; the elastic layer is connected with the rigid base body disc through a bonding layer; and the rigid base body disc and the connecting rod are fixedly connected through threads. The preparation process of the elastic milling and polishing tool comprises the following steps that an abrasive layer raw material is prepared; the abrasive layer is evenly smeared on a plane mold with a groove, the abrasive layer is then covered with the cloth base body layer, mold covering is conducted, and hot-pressing curing molding is carried out; the cloth base body layer is bonded to the elastic layer; and the elastic layer is bonded to the rigid base body disc, and the elastic milling and polishing tool is obtained. The elastic milling and polishing tool has the advantages of being simple in preparation process, short in process route, low in cost, high in milling and polishing efficiency, good in process flexibility, stable in machining performance, environmentally friendly in manufacturing process and the like.

Description

Technical field[0001]The invention relates to a processing tool, in particular to a milling and polishing tool for free-form surface processing, in particular to a consolidated abrasive milling and polishing tool with an elastic layer.Background technique[0002]Free-form surfaces are the most complex but widely used surfaces in engineering. Free-form surfaces are increasingly used in automotive, electronics, aerospace, mold and other fields, and higher requirements are placed on the processing technology of such parts. The grinding and polishing of free-form surfaces is the last process in the manufacture of parts, and it is also a key process, which has a decisive effect on the performance and life of the parts. At present, the more mature free-form surface parts grinding and polishing methods include abrasive belt grinding and polishing, magnetorheological polishing and free abrasive flexible tool head grinding and polishing. The characteristics of abrasive belt grinding and polish...

Claims

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Application Information

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IPC IPC(8): B24D7/00B24D18/00
CPCB24D7/00B24D18/009
Inventor 朱永伟徐成宇刘纪东郭继通
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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