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Grinding device and polishing process for 3D-printed slender hole

A technology of 3D printing and grinding device, applied in the field of grinding device and polishing process, can solve the problems of limitation of finishing process, high polishing cost, and not being widely used, and achieve uniform grinding and polishing process, high degree of automation, improved The effect of processing efficiency

Active Publication Date: 2021-02-05
BEIJING POWER MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of the milling machine polishing plane mainly depends on the milling cutter, and the polishing cost is very high, which has great restrictions on the finishing of the surface of complex parts, and is not widely used in many fields; although manual polishing can greatly reduce cost, but the flatness of polishing is not guaranteed
However, for metal 3D printed parts with high hardness and spherical accumulation of particles on the surface, none of the above methods can be polished

Method used

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  • Grinding device and polishing process for 3D-printed slender hole
  • Grinding device and polishing process for 3D-printed slender hole
  • Grinding device and polishing process for 3D-printed slender hole

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a grinding device for 3D printing elongated holes, see attached figure 1 , including: frame 1, drive motor 3, coupling A4, reciprocating movement mechanism, grinding mechanism and clamping mechanism 11;

[0043] The structure to be ground and polished is the elongated hole 6 in the 3D printing molding part; the cross section of the elongated hole 6 can be circular, rectangular or other irregular polygons; in this embodiment, the cross section of the elongated hole 6 It is a rectangle, the two side lengths of the rectangle are 10mm and 20mm respectively, and the length of the elongated hole 6 is 200mm;

[0044] The driving motor 3 is fixed on the frame 1 through the positioning screw A2; one end of the 3D printing molding part is connected to the output shaft of the driving motor 3 through a coupling A4, and the elongated hole in the 3D printing molding part The center line of 6 coincides with the axis of the output shaft of the driving motor 3;...

Embodiment 2

[0061] Based on the grinding device of Example 1, this example provides a polishing process for 3D printing elongated holes, the specific steps of which are as follows:

[0062] Step 1, after the water-based abrasive liquid is evenly coated on the outer surface of the emery wire 10, one end of the emery wire bundle is inserted into the elongated hole 6;

[0063] Step 2, connect the 3D printing molding part processed with the elongated hole 6 to the output shaft of the drive motor 1, fix the other end of the emery wire harness on the auxiliary magnetic pole 24 of the clamping mechanism 11, and adjust the elongated hole 6 and the magnetic pole of attraction 9, to ensure that the distance between the magnetic pole 9 and the outer wall of the 3D printing molded part where the elongated hole 6 is located is less than 2 mm;

[0064] Step 3, the PLC controller 8 controls the rotating motor 12 to drive the lead screw 17 to rotate, and the nut 20 drives the support plate 5, the magneti...

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Abstract

The invention discloses a grinding device and a polishing process for a 3D-printed slender hole. The grinding device comprises a rack, a driving motor, a reciprocating mechanism, carborundum wires, attraction magnetic poles and a clamping mechanism, wherein the driving motor is fixed on the rack, a 3D printing forming part is connected with an output shaft of the driving motor, the two or more carborundum wires form a carborundum wire harness, one end of the carborundum wire harness extends into the slender hole, the other end of the carborundum wire harness is mounted on the reciprocating mechanism through the clamping mechanism, the attraction magnetic poles are fixed on the reciprocating mechanism, the carborundum wires are attached to the inner surface of the slender hole under the attraction of the attraction magnetic poles, and when the slender hole rotates along with the driving motor, the carborundum wires generate scratching and friction on the inner surface of the slender hole, so that the inner surface of the slender hole is ground and polished. The grinding device can carry out grinding and polishing finishing machining on the slender hole formed through 3D printing.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a grinding device and a polishing process for 3D printing elongated holes. Background technique [0002] 3D printing technology is a cumulative manufacturing technology, that is, rapid prototyping. It is based on a digital model file, using bondable materials such as special wax, powdered metal or plastic, to manufacture three-dimensional objects by printing layers of bonded materials. With the rapid development of science and technology, 3D printing has been widely used in industrial modeling, machinery manufacturing, aerospace, military and other fields. And because it saves materials, improves material utilization, reduces costs by abandoning production lines, and can achieve high precision and complexity, its application fields will continue to expand. However, due to the "step effect" in layered manufacturing, although each layer is very thin, at a certain microscopic sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B5/35B24B5/48B24B57/02
CPCB24B5/485B24B5/35B24B5/355B24B57/02
Inventor 马瑞白洁郑俊超解志文陈燕陈松
Owner BEIJING POWER MACHINERY INST