Method for removing burrs at port of superfine pipe

Abstract

The invention relates to the technical field of superfine pipe treatment, and discloses a method for removing burrs at a port of a superfine pipe, which comprises the following steps: grinding in a grinding cylinder, polishing in a beaker, grinding a pipe in the grinding cylinder through grinding materials and grinding liquid so as to grind the burrs at the two sides of the pipe, and then sufficiently oscillating the grinding materials by using ultrasonic waves so as to remove the burrs at the port of the superfine pipe. According to the invention, the components of the polishing solution are added in the beaker, so that the polishing solution not only plays a role in polishing, but also can remove the residues of the internal grinding materials, and meanwhile, coating films can be formed inside and outside the pipe, so that the inner wall of the pipe is smooth and clean. The ultra-thin pipe end opening burr quality, the burr removing effect and the instrument detection result are good after the ultra-thin pipe end opening burr removing device is used for machining the ultra-thin pipe, the burr removing end face integrity is high, and follow-up use is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of ultrafine tube processing, in particular to a method for removing burrs from ultrafine tube ports. Background Art

[0002] Ultrafine alloy tubes used in the micro field (specifically tubes with an outer diameter of 0.1-0.5mm) are very likely to form micron-level burrs at the cutting port during the process of cutting into short tubes (generally referring to a length of 1.00-12.00mm). The presence of micron-level burrs has a great negative impact on the application of the tubes and must be effectively removed. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a method for removing burrs from the end of an ultrafine tube, which solves the problems raised in the above-mentioned background technology.

[0004] To solve the above technical problems, according to one aspect of the present invention, more specifically, a method for removing burrs from an ultrafine tube port comprises the following steps:

[0005] S1, the first step of grinding:

[0006] S1.1. Abrasives include silica abrasives with a particle size of 0.1-1mm, diamond abrasives with a particle size of 1-10um, and white jade abrasives with a particle size of 10-50um. If the inner diameter of the tube is less than 0.2mm, and the inner and outer diameters are 0.12 / 0.15mm and 0.16 / 0.2mm, select micro abrasives with a particle size of 1-10um and fine abrasives with a particle size of 10-30um for mixed grinding. If the inner diameter of the tube is greater than 0.2mm, and the inner and outer diameters are 0.23 / 0.295mm and 0.295 / 0.38mm, use fine abrasives with a particle size of 50-80um and mix with a small amount of micro abrasives with a particle size of 5-10um.

[0007] S1.2, add 5ml of acidic grinding liquid, the grinding material should occupy 20-30% of the grinding cylinder, and add 10% water, put the grinding cylinder into the motor, and adjust the motor grinding speed and frequency; if the length of the pipe is 2-3mm, control the speed frequency at 28-33Hz; if the length of the pipe is 4-7mm, control the speed frequency at 25-30Hz; if the length of the pipe is more than 8mm, control the speed frequency at 20-25Hz;

[0008] S2 second step grinding:

[0009] S2.1. Choose 80% coarse abrasive with a particle size of 1-2mm and mix it with 20% fine abrasive with a particle size of 10-50um. If the inner diameter of the pipe is less than 0.2mm, choose fine abrasive of 10-25um; if the inner diameter of the pipe is greater than 0.2mm, choose fine abrasive of 25-50um and add white jade abrasive to mix, which can effectively reduce the degree of burr rolling caused by grinding;

[0010] S2.2, the brown corundum and white jade mixed abrasive in this step needs to occupy 65-75% of the volume of the abrasive tube, add 5ml of alkaline grinding liquid, add 5% water, put the grinding tube into the motor, and adjust the motor grinding speed frequency; if the tube length is 2-3mm, control the speed frequency at 32-35Hz; if the tube length is 4-7mm, control the speed frequency at 28-33Hz; if the tube length is more than 8mm, control the speed frequency at 23-28Hz;

[0011] S3, the third step of grinding: take out the 3000-5000 tubes ground in the grinding cylinder, put them into a beaker, add 50-100um silica to cover the bottom of the beaker, add 250ml of water and 2ml of polishing liquid, and ultrasonically vibrate for 20 minutes at a temperature of 30-40℃.

[0012] Furthermore, in S1, the abrasive material is stainless steel beads, corundum and plastic particles according to the length, diameter, thickness and inner diameter of the tube.

[0013] Furthermore, in S2, the grinding liquid includes water, citric acid, dispersant, OP emulsifier and nano-silicon dioxide, and the grinding mill components are mixed by volume in the following ratios: water 480g / L, citric acid 4-8g / L, dispersant 2-4g / L, OP emulsifier 1-3g / L, nano-silicon dioxide 3-5g / L.

[0014] The beneficial effects of the method for removing burrs from the ultrafine tube port of the present invention are:

[0015] The present invention grinds the pipe by using abrasives and abrasive liquid inside a grinding cylinder, thereby grinding the burrs on both sides of the pipe. Afterwards, the abrasive is fully vibrated by ultrasound to fully remove the refined burrs, and the abrasive residue inside the pipe is removed, so that the inner wall is smooth and clean. The component of polishing liquid is added inside the beaker, so that it can not only play a polishing role, but also remove the internal abrasive residue, and at the same time form a coating film inside and outside the pipe, thereby increasing the smoothness of the pipe and protecting the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0019] like Figure 1 According to one aspect of the present invention, there is provided a method for removing burrs from an ultrafine tube port, comprising the following steps:

[0020] S1, the first step of grinding:

[0021] S1.1. Abrasive types include silica abrasive with a particle size of 0.1-1mm, diamond abrasive with a particle size of 1-10um, and white jade abrasive with a particle size of 10-50um; if the inner diameter of the tube is less than 0.2mm, the inner and outer diameters are 0.12 / 0.15mm and 0.16 / 0.2mm, and micro abrasive with a particle size of 1-10um and fine abrasive with a particle size of 10-30um are selected for mixed grinding; if the inner diameter of the tube is greater than 0.2mm, the inner and outer diameters are 0.23 / 0.295mm and 0.295 / 0.38mm, use fine abrasive with a particle size of 50-80um and mix a small amount of micro abrasive with a particle size of 5-10um;

[0022] S1.2, add 5ml of acidic grinding liquid, the abrasive should occupy 20-30% of the grinding tube, and add 10% water, put the grinding tube into the motor, and adjust the motor grinding speed and frequency (the principle is to use the speed difference between large and small particle size abrasives during grinding, and there is air and appropriate amount of water in the grinding tube, so that the abrasive moves relatively violently, which has a grinding effect on the appearance and internal burrs of the pipe. It can be considered that the abrasive movement speed is inversely proportional to the particle size r3 and proportional to the motor speed v2); if the length of the pipe is 2-3mm, control the speed frequency at 28-33Hz; if the length of the pipe is 4-7mm, control the speed frequency at 25-30Hz; if the length of the pipe is more than 8mm, control the speed frequency at 20-25Hz (the degree of bending is related to the speed frequency V 2 Proportional to the volume V of the cylinder n Proportional to the length of the tube 1 n is proportional to);

[0023] S2 second step grinding:

[0024] S2.1. Choose 80% coarse abrasive with a particle size of 1-2mm and mix it with 20% fine abrasive with a particle size of 10-50um. If the inner diameter of the pipe is less than 0.2mm, choose fine abrasive of 10-25um; if the inner diameter of the pipe is greater than 0.2mm, choose fine abrasive of 25-50um and add white jade abrasive to mix, which can effectively reduce the degree of burr rolling caused by grinding;

[0025] S2.2, the mixed abrasive of brown corundum and white jade in this step needs to occupy 65-75% of the volume of the abrasive tube, add 5ml of alkaline grinding liquid, add 5% water, put the grinding tube into the motor, and adjust the motor grinding speed frequency; if the tube length is 2-3mm, control the speed frequency at 32-35Hz; if the tube length is 4-7mm, control the speed frequency at 28-33Hz; if the tube length is more than 8mm, control the speed frequency at 23-28Hz (the abrasive in the tube accounts for a large proportion in this step, and the tube is more difficult to bend than in the previous step);

[0026] S3, the third step of grinding: take out the 3000-5000 tubes ground in the grinding cylinder, put them into a beaker, add 50-100um silica to cover the bottom of the beaker, add 250ml of water and 2ml of polishing liquid, and ultrasonically vibrate for 20 minutes at a temperature of 30-40℃.

[0027] In this embodiment, in S1, the abrasive is stainless steel beads, corundum and plastic particles according to the length, diameter, thickness and inner diameter of the tube.

[0028] In this embodiment, in S2, the grinding liquid includes water, citric acid, dispersant, OP emulsifier and nano-silicon dioxide, and the grinding machine components are mixed by volume as follows: 480g / L water, 4-8g / L citric acid, 2-4g / L dispersant, 1-3g / L OP emulsifier, and 3-5g / L nano-silicon dioxide.

[0029] Example 1

[0030] S1. Put 3000-5000 pipes into the grinding cylinder, and add 50% of the volume of the grinding cylinder with abrasive. The abrasive should be 0.05-2mm in diameter according to the length, diameter, thickness and inner diameter of the pipes.

[0031] S2, placing the grinding liquid inside the grinding cylinder, and the mass ratio of the grinding liquid to the grinding material is 1:10, starting the grinding cylinder to grind the pipe, adjusting the speed frequency of the grinding cylinder motor to 5-80Hz, and the grinding time is 5-50min;

[0032] S3. Take out the 3000-5000 tubes ground in the grinding cylinder, put them into a beaker, add 1.5-3mm nano-silicon dioxide until it covers the bottom of the beaker, add 250ml of water and 2ml of polishing liquid, and ultrasonically vibrate for 20 minutes at a temperature of 30-40℃.

[0033] Example 2

[0034] S1. Put 3000-5000 pipes into the grinding cylinder, and add 50% of the volume of the grinding cylinder with abrasive. The abrasive should be 0.05-2mm in diameter according to the length, diameter, thickness and inner diameter of the pipes.

[0035] S2, placing the grinding liquid inside the grinding cylinder, and the mass ratio of the grinding liquid to the grinding material is 1:15, starting the grinding cylinder to grind the pipe, adjusting the speed frequency of the grinding cylinder motor to 5-80Hz, and the grinding time is 30min;

[0036] S3. Take out the 3000-5000 tubes ground in the grinding cylinder, put them into a beaker, add 1.5-3mm nano-silicon dioxide until it covers the bottom of the beaker, add 250ml of water and 5ml of polishing liquid, and perform ultrasonic vibration for 30 minutes at a temperature of 30-40℃.

[0037] Comparative Example 1

[0038] The wall thickness of the pipe is controlled by electric current, and a certain concentration of electroforming solution is applied around the pipe. According to the processing requirements, the abrasive particle size and grinding frequency, as well as the cavity volume of the grinding cylinder and the amount of water are precisely controlled to remove the burrs inside the pipe.

[0039] The pipe deburring methods prepared in the examples and comparative examples were subjected to surface deburring quality evaluation, deburring effect evaluation, and instrument testing. The specific data are shown in Table 1.

[0040] Table 1 Test results of pipe deburring methods of embodiments and comparative examples

[0041]

[0042] Table 1

[0043] In Table 1, the A-level deburring effect means that the workpiece surface after deburring should be free of burrs, external injuries, creases, and ridge defects, and no scratches and wear marks visible to the naked eye. The B-level deburring effect means that the workpiece surface after deburring should be free of obvious burrs, external injuries, creases, and ridge defects. The C-level deburring effect means that the workpiece surface after deburring should be free of large burrs, and the cutting and other aspects are in line with the design dimensions.

[0044] As shown in Table 1, the deburring quality, deburring effect and instrument detection results of the pipe surface in the present invention are better than those in Comparative Example 1, and the deburring end surface integrity in the present application is relatively high, which is convenient for subsequent use.

[0045] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A method for removing burrs from an ultrafine tube port, comprising the following steps: S1, the first step of grinding: S1.

1. Abrasives include silica abrasives with a particle size of 0.1-1mm, diamond abrasives with a particle size of 1-10um, and white jade abrasives with a particle size of 10-50um. If the inner diameter of the tube is less than 0.2mm, and the inner and outer diameters are 0.12 / 0.15mm and 0.16 / 0.2mm, select micro abrasives with a particle size of 1-10um and fine abrasives with a particle size of 10-30um for mixed grinding. If the inner diameter of the tube is greater than 0.2mm, and the inner and outer diameters are 0.23 / 0.295mm and 0.295 / 0.38mm, use fine abrasives with a particle size of 50-80um and mix with a small amount of micro abrasives with a particle size of 5-10um. S1.2, add 5ml of acidic grinding liquid, the grinding material should occupy 20-30% of the grinding cylinder, and add 10% water, put the grinding cylinder into the motor, and adjust the motor grinding speed and frequency; if the length of the pipe is 2-3mm, control the speed frequency at 28-33Hz; if the length of the pipe is 4-7mm, control the speed frequency at 25-30Hz; if the length of the pipe is more than 8mm, control the speed frequency at 20-25Hz; S2 second step grinding: S2.

1. Choose 80% coarse abrasive with a particle size of 1-2mm and mix it with 20% fine abrasive with a particle size of 10-50um. If the inner diameter of the pipe is less than 0.2mm, choose fine abrasive of 10-25um; if the inner diameter of the pipe is greater than 0.2mm, choose fine abrasive of 25-50um and add white jade abrasive to mix, which can effectively reduce the degree of burr rolling caused by grinding; S2.2, the brown corundum and white jade mixed abrasive in this step needs to occupy 65-75% of the volume of the abrasive tube, add 5ml of alkaline grinding liquid, add 5% water, put the grinding tube into the motor, and adjust the motor grinding speed frequency; if the tube length is 2-3mm, control the speed frequency at 32-35Hz; if the tube length is 4-7mm, control the speed frequency at 28-33Hz; if the tube length is more than 8mm, control the speed frequency at 23-28Hz; S3, the third step of grinding: take out the 3000-5000 tubes ground in the grinding cylinder, put them into a beaker, add 50-100um silica to cover the bottom of the beaker, add 250ml of water and 2ml of polishing liquid, and ultrasonically vibrate for 20 minutes at a temperature of 30-40℃.

2. A method for removing burrs from the end of an ultrafine tube according to claim 1, characterized in that: In S1, the abrasive material is stainless steel beads, corundum and plastic particles according to the length, diameter, thickness and inner diameter of the pipe.

3. The method for removing burrs from the end of an ultrafine tube according to claim 1, characterized in that: In S2, the grinding liquid includes water, citric acid, dispersant, OP emulsifier and silicon dioxide, and the grinding mill components are mixed by volume in the following ratios: water 480g / L, citric acid 4-8g / L, dispersant 2-4g / L, OP emulsifier 1-3g / L, silicon dioxide 3-5g / L.

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