Roughness-controllable polishing method for stereolithographic resin prototype models

Abstract

The invention discloses a roughness-controllable polishing method for stereolithographic resin prototype models. According to the invention, the fluid of a prepared chemical etching abrasive particle flow is used on abrasive particle flow equipment for respective polishing of the stereolithographic resin prototype models; then distilled water or deionized water is used for cleaning, surface roughness of the obtained stereolithographic resin prototype models is reduced to Ra 0.8 to 2 mu m from original Ra 8.0 to 20.0 mu m, surface roughness is uniform, texture is regular, postprocessing of the stereolithographic resin prototype models is realized, operation is simple, and labor intensity is reduced. The polishing method eliminates step effects of the stereolithographic resin prototype models, improves surface precision of the resin prototype models and does not influence dimensional precision of the resin prototype models.

Description

technical field

[0001] The invention belongs to the technical field of rapid prototyping light-curing forming, and relates to a polishing method of a light-curing forming resin prototype with controllable roughness. Background technique

[0002] The rapid prototyping photocuring resin prototype is formed by the principle of material accumulation. Due to the limitation of the forming mechanism, there is inevitably a step effect in the forming process. It is difficult to guarantee the final The surface quality of the product and the large surface roughness of the prototype are not conducive to the flow and filling of the slurry. At present, most research mainly focuses on how to improve the accuracy through software and hardware methods, but these methods cannot fundamentally eliminate the step effect, and the development is difficult and expensive. Therefore, it is particularly important to invent a low-cost polishing process, but the difficulties in the polishing process of...

Examples

Embodiment 1

[0028] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0029] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0030] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0031] Firstly, 12% PH regulator, 12% alcohol and deionized water are prepared as a mixed liquid, wherein the PH regulator is potassium hydroxide, and the alcohol is methanol; when adding abrasive grains, the dispersion method is used, and the abrasive powder is mixed by mechanical stirring and ultrasonic vibration. Directly disperse into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) aggregates are opened into independent primary particles or relatively small particles under the action of mechanical stirring force and ultrasonic vibration. Small aggregates; (c) Add 0.3% to 0.6% o...

Embodiment 2

[0036] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0037] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0038] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0039] Firstly, 13.5% PH regulator, 15% alcohol and deionized water are prepared as a mixed liquid, wherein the PH regulator is sodium hydroxide, and the alcohol is ethanol; when adding abrasive grains, the dispersion method is used, and the abrasive powder is mixed by mechanical stirring and ultrasonic vibration. Directly disperse into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) aggregates are opened into independent primary particles or relatively small particles under the action of mechanical stirring force and ultrasonic vibration. Small aggregates; (c) Add 0.5% to 0.6% sod...

Embodiment 3

[0044] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0045] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0046] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0047] Firstly, 15% of PH adjuster, 13.5% of alcohol and deionized water are prepared as a mixed liquid, wherein the pH adjuster is sodium hydroxide, and the alcohol is ethylene glycol; when adding abrasive grains, the dispersion method is adopted, and the mixture is mixed by mechanical stirring and ultrasonic vibration. Abrasive powder is directly dispersed into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) agglomerates are broken into independent primary particles under the action of mechanical stirring force and ultrasonic vibration Or smaller aggregates; (c) Add 0.5% to 0.6% ...

technical field

[0001] The invention belongs to the technical field of rapid prototyping light-curing forming, and relates to a polishing method of a light-curing forming resin prototype with controllable roughness. Background technique

[0002] The rapid prototyping photocuring resin prototype is formed by the principle of material accumulation. Due to the limitation of the forming mechanism, there is inevitably a step effect in the forming process. It is difficult to guarantee the final The surface quality of the product and the large surface roughness of the prototype are not conducive to the flow and filling of the slurry. At present, most research mainly focuses on how to improve the accuracy through software and hardware methods, but these methods cannot fundamentally eliminate the step effect, and the development is difficult and expensive. Therefore, it is particularly important to invent a low-cost polishing process, but the difficulties in the polishing process of...

Examples

Embodiment 1

[0028] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0029] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0030] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0031] Firstly, 12% PH regulator, 12% alcohol and deionized water are prepared as a mixed liquid, wherein the PH regulator is potassium hydroxide, and the alcohol is methanol; when adding abrasive grains, the dispersion method is used, and the abrasive powder is mixed by mechanical stirring and ultrasonic vibration. Directly disperse into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) aggregates are opened into independent primary particles or relatively small particles under the action of mechanical stirring force and ultrasonic vibration. Small aggregates; (c) Add 0.3% to 0.6% o...

Embodiment 2

[0036] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0037] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0038] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0039] Firstly, 13.5% PH regulator, 15% alcohol and deionized water are prepared as a mixed liquid, wherein the PH regulator is sodium hydroxide, and the alcohol is ethanol; when adding abrasive grains, the dispersion method is used, and the abrasive powder is mixed by mechanical stirring and ultrasonic vibration. Directly disperse into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) aggregates are opened into independent primary particles or relatively small particles under the action of mechanical stirring force and ultrasonic vibration. Small aggregates; (c) Add 0.5% to 0.6% sod...

Embodiment 3

[0044] A method for polishing a light-cured molding resin prototype with controllable roughness, specifically comprising the following operations:

[0045] (1) Use a light-curing molding machine to make a light-curing molding resin prototype;

[0046] (2) Preparation of chemical corrosion abrasive flow fluid by dispersion method:

[0047] Firstly, 15% of PH adjuster, 13.5% of alcohol and deionized water are prepared as a mixed liquid, wherein the pH adjuster is sodium hydroxide, and the alcohol is ethylene glycol; when adding abrasive grains, the dispersion method is adopted, and the mixture is mixed by mechanical stirring and ultrasonic vibration. Abrasive powder is directly dispersed into water to prepare abrasive corrosion abrasive flow fluid: (a) abrasive particles are wetted in the mixed liquid; (b) agglomerates are broken into independent primary particles under the action of mechanical stirring force and ultrasonic vibration Or smaller aggregates; (c) Add 0.5% to 0.6% ...

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