CN115673997A - Process and device for scouring and polishing abrasive on inner surface of elongated tube - Google Patents
Process and device for scouring and polishing abrasive on inner surface of elongated tube Download PDFInfo
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- CN115673997A CN115673997A CN202211422551.8A CN202211422551A CN115673997A CN 115673997 A CN115673997 A CN 115673997A CN 202211422551 A CN202211422551 A CN 202211422551A CN 115673997 A CN115673997 A CN 115673997A
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Abstract
A process and a device for scouring and polishing abrasive materials on the inner surface of a slender pipe belong to the technical field of fluid scouring and polishing. Suitable for polishing the inner surface of an elongated tube to reduce the surface roughness thereof, wherein the inner diameter phi of the elongated tube is below 2 mm. The polishing device comprises an air pump, a pressure regulating valve, an electromagnetic directional valve, two fixing tables and two injectors. Firstly, a polishing device is installed and connected according to the flow sequence, the air tightness of the device is checked, polishing liquid is sucked into the inner cavities of two injectors, and after a slender pipe workpiece to be processed is fixed, two ends of the slender pipe workpiece are communicated with the inner cavities of the injectors. And secondly, the air pump, the pressure regulating valve and the electromagnetic reversing valve are opened, and the two cylinders respectively drive the two injectors to axially wash the inner wall of the workpiece back and forth so as to polish the workpiece. And finally, detecting, wherein the quality of the inner surface of the polishing pad reaches the expected target, and finishing the polishing process. The invention can ensure wide practicability of workpiece processing, realize automatic processing of the inner surface of the slender pipe workpiece and reduce the cost of manpower and material resources during workpiece processing.
Description
Technical Field
The invention belongs to the technical field of fluid scouring and polishing, and relates to a process and a device for scouring and polishing abrasive materials on the inner surface of a slender pipe.
Background
In recent years, with the development of high precision and miniaturization of machine parts, the difficulty of machining and manufacturing thereof has been increasing. The slender tube is used as a common structure difficult to process and widely applied to the fields of medical instruments, aerospace industry and the like. Because the high-purity gas or liquid is generally conveyed in the elongated tube, in order to ensure smooth fluid conveying and uniform pressure, avoid unnecessary pollution and corrosion caused by defects on the inner surface of the elongated tube, and prolong the service life of equipment, the inner surface of the elongated tube needs to be polished to achieve higher surface quality.
Polishing the inner surface of the slender pipe:
the patent CN201455796U proposes a polishing device for the inner wall of a steel tube, in which a motor drives a driving wheel, a driven wheel and a polishing rope passing through the inner hole of the tube to be polished, an inner magnetic core of the polishing rope is attracted to a magnetic strip outside the tube to make the polishing rope tightly attached to the inner wall, and the tube is driven by a holder motor to move, so as to polish the inner wall of the slender tube. The device simple structure introduces the magnetic field effect simultaneously, but it uses the polishing rope to polish, and polishing effect is limited, and can't satisfy the polishing requirement to the slender pipe that the inner wall quality requirement is higher. Meanwhile, the method has higher requirements on the aperture of the slender pipe and is not suitable for polishing and processing the slender pipe with smaller aperture. In addition, the device requires that the lower edges of the driving wheel and the driven wheel are tangent to the axis of the slender pipe, otherwise, the polishing rope in the needle tube towards one end of the driving wheel and one end of the driven wheel are weakened in contact with the inner wall of the needle tube due to the pulling force of the driving wheel and the driven wheel, and the polishing effect is uneven.
Patent CN202137643U proposes a magnetic polishing machine for inner wall of slender tube, in the device, iron cores wound with coils are disposed at bottom and side of slender tube workpiece, and alternating current is applied to the iron cores to generate reciprocating alternating magnetic field to drive magnetic abrasive particles in the tube to move axially along the tube, and at the same time, the motor drives the slender tube to rotate, thereby polishing inner surface of the slender tube. The device generates a magnetic field by utilizing an electromagnetic effect, the magnetic field in the tube is uniformly distributed along the axial direction, so that the inner surface of the slender tube is uniformly ground, but the coil generates heat seriously after being electrified, and a corresponding heat dissipation measure is lacked; meanwhile, the transmission wheel can only transmit the large-aperture pipe, and the device is not suitable for processing the small-aperture slender pipe.
Patent CN206632769U proposes a polishing device for the inner surface of an elongated tube with a large length-diameter ratio, wherein an auxiliary magnetic pole, magnetic abrasive particles and water-based grinding fluid are placed in an elongated tube workpiece, the magnetic abrasive particles generate high-frequency impact action on the inner surface of the elongated tube through an ultrasonic device, a magnetic field is applied at the same time, and the magnetic abrasive particles and the inner wall of the elongated tube form relative motion through a lead screw and a chuck so as to polish the inner wall. The device introduces ultrasound, so that the magnetic abrasive material generates high-frequency impact effect on the inner wall of the slender tube to enhance the grinding effect, but for some tubes with smaller inner diameter, the magnetic abrasive material and the auxiliary magnetic pole are not conveniently placed in the tube, and the device is not suitable for the slender tube with small inner diameter.
Patent CN110815027a proposes a slender pipe inner hole polishing device, in which a flexible rod is used to connect a grinding head with an output end of a motor, the flexible rod has elasticity, when the motor rotates, one end of the flexible rod connected with the grinding head swings circumferentially relative to an axis of the flexible rod, so as to polish the inner wall of a slender pipe fitting, but in this way, besides scratches on the slender pipe inner hole, for some slender pipes with smaller bore diameters (less than 2 mm), the grinding head cannot enter the inner hole, which results in failure of the method. Patent CN206998477U provides a slender pipe fitting hole polishing machine, through cylinder, rotary fixture, drives the relative work piece hole of abrasive material by the yarn and carries out axial and radial motion to polish the hole, although the yarn can get into little hole, the abrasive material that drives through the yarn is few, can not carry out effective polishing to the hole surface.
Most of polishing tools of the polishing devices in the above patents and other elongated tube inner surface polishing devices are polishing ropes, polishing rods or magnetic abrasive particles, and the polishing requirements of the elongated holes with small apertures cannot be met, so that a polishing device and a polishing method for the elongated holes with smaller apertures are urgently needed to ensure the polishing efficiency and the polishing precision.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a process and a device for abrasive scouring and polishing the inner surface of a slender pipe, which are used for solving the problems of limited polishing and low polishing precision and efficiency of the inner surface of the slender pipe workpiece.
In order to achieve the purpose, the invention provides the following technical scheme:
an abrasive scouring and polishing device for the inner surface of an elongated tube, which is suitable for polishing the inner surface of the elongated tube to reduce the surface roughness, wherein the inner diameter phi of the elongated tube is less than 2 mm. The polishing device comprises an air pump 1, a pressure regulating valve 2, an electromagnetic directional valve 4, a first air cylinder 6, a first injector 8, a fixed table 10, a second injector 12 and a second air cylinder 13.
The injection cavities of the first injector 8 and the second injector 12 are filled with polishing liquid 15 for polishing the inner surface of the workpiece 11, and the two injectors are respectively fixed on the working platform through fixing supports 9. The push rod of the first syringe 8 is connected with the piston rod of the first cylinder 6 through the connector 7, so that the movement directions of the first syringe and the first cylinder are consistent; the push rod of the second syringe 12 is connected with the piston rod of the second cylinder 13 through another connector 7, so that the movement directions of the two are consistent.
The workpiece 11 is fixed on the working platform through the fixing platform 10 and is arranged between the first injector 8 and the second injector 12, the left end and the right end of the workpiece 11 are respectively communicated with the injection heads of the first injector 12 and the second injector 8 through the sealing chuck 14, and polishing liquid in an injection cavity of the injectors can enter the workpiece 11 through the extrusion of the pistons of the injectors.
The air pump 1 is respectively communicated with the first air cylinder 6 and the second air cylinder 13 through air transmission pipelines, and the air transmission pipelines are sequentially provided with the pressure regulating valve 2, the electromagnetic directional valve 3 and the two three-way pipes 5. The air pump 1 is used for generating high-pressure air, the high-pressure air is conveyed to the pressure regulating valve 2 through the air conveying pipe, the pressure regulating valve 2 regulates the conveyed initial high-pressure air to working gas with proper pressure, and then the working gas is conveyed to the electromagnetic reversing valve 3 through the air conveying pipe. The electromagnetic directional valve 3 is controlled by the electromagnetic directional valve controller 4, and is used for alternately discharging the working gas conveyed by the pressure regulating valve 2 from the left exhaust hole 22 and the right exhaust hole 21 of the directional valve 3 in sequence. The two exhaust holes of the electromagnetic directional valve 3 are externally connected with a three-way pipe 5, and the two three-way pipes 5 are used for dividing working gas exhausted from the exhaust holes of the electromagnetic directional valve 3 into two paths to respectively enter different cylinder cavities of the first cylinder 6 and the second cylinder 13. The electromagnetic directional valve 3 is provided with a pressure relief hole 20.
Two cylinder cavities, namely a left cylinder cavity 19 and a right cylinder cavity 18, are arranged in the second cylinder 13 and are separated by a cylinder piston 16, a cylinder piston rod 17 is connected with the cylinder piston 16, the two are relatively static, and the motion states are kept consistent. When the left cylinder 19 of the second cylinder 13 is charged, the cylinder piston 16 is pressed to drive the cylinder push rod 17 to move rightwards, and the gas in the right cylinder cavity 18 flows through the three-way pipe 5 along the gas transmission pipeline under the pressure of the cylinder piston 16 to enter the electromagnetic directional valve 3 and is discharged from the pressure relief hole 20. When the right cylinder 18 of the second cylinder 13 is charged, the cylinder piston 16 is pressed to drive the cylinder push rod 17 to move leftwards, and the gas in the left cylinder cavity 19 is pressed by the cylinder piston 16 and flows through the three-way pipe 5 along the gas transmission pipeline to enter the electromagnetic directional valve 3 and is discharged from the pressure relief hole 20. The principle and the structure of the first cylinder 6 and the second cylinder 13 are completely consistent. When the left exhaust hole 22 of the electromagnetic directional valve 3 works, working gas respectively enters a left cylinder cavity of the first cylinder 6 and a left cylinder cavity of the second cylinder 13 through the three-way pipe 5, so that the piston 16 of the second cylinder 13 is pressed to drive the piston rod and the push rod of the second injector 12 to move rightwards, and gas in the right cylinder cavity of the second cylinder enters the electromagnetic directional valve 3 along a gas pipeline and is exhausted from the pressure relief hole 20; the piston of the first cylinder 6 is pressed to drive the piston rod and the push rod of the first injector 8 to move rightwards, and the gas in the right cylinder cavity enters the electromagnetic directional valve 3 along the gas transmission pipeline and is discharged from the pressure relief hole 20. So that the polishing liquid flows from the left end to the right end of the workpiece 11 to flush the inner wall thereof.
When the right exhaust hole 21 of the electromagnetic directional valve 3 works, working gas respectively enters the right cylinder cavity of the first cylinder 6 and the right cylinder cavity of the second cylinder 13 through the three-way pipe 5, so that the piston of the second cylinder 13 is pressed to drive the piston rod and the push rod of the second injector 12 to move leftwards, and gas in the left cylinder cavity of the electromagnetic directional valve enters the electromagnetic directional valve 3 along a gas transmission pipeline and is exhausted from the pressure relief hole 20; the piston of the first cylinder 6 is pressed to drive the piston rod and the push rod of the first injector 8 to move leftwards, and the gas in the left cylinder cavity enters the electromagnetic directional valve 3 along the gas transmission pipeline and is discharged from the pressure relief hole 20. So that the polishing liquid flows from the right end to the left end of the workpiece 11 to flush the inner wall thereof. This is repeated, thereby achieving a polishing effect on the inner wall of the workpiece 11.
Further, the pressure of the working gas is generally adjusted to 0.1MPa by the pressure regulating valve 2.
Further, the polishing medium in the polishing solution 15 is selected from polishing media such as alumina, silicon carbide, diamond powder, etc. according to the material of the slender pipe workpiece 11 to be processed.
A slender tube inner wall polishing method based on the device comprises the following steps:
step one, installing and connecting the polishing device according to the flow sequence and checking the air tightness of the device.
And step two, selecting a proper polishing medium to prepare polishing solution 15 according to the workpiece material, uniformly stirring the prepared polishing solution 15, and sucking the mixture into the inner cavities of the first injector 8 and the second injector 12.
And step three, fixing the slender pipe workpiece 11 to be processed through the fixing table 10, wherein the left end of the slender pipe workpiece is communicated with the inner cavity of the second syringe 12 through the sealing chuck 14, and the right end of the slender pipe workpiece is communicated with the inner cavity of the first syringe 8 through the sealing chuck 14.
And step four, opening the air pump 1, and adjusting the pressure of the conveyed air to 0.1MPa through the pressure regulating valve 2.
And step five, the electromagnetic directional valve 3 is opened through the electromagnetic directional valve controller 4, and the polishing solution axially washes back and forth the inner wall of the slender pipe workpiece 11 to be processed under the action of the first injector 8 and the second injector 12 which are respectively driven by the first cylinder 6 and the second cylinder 13, so that the slender pipe workpiece is polished.
And step five, after the processing is finished, closing the electromagnetic directional valve 3 and the air pump 1 in sequence, taking down the slender pipe workpiece 11, and putting the slender pipe workpiece into an ultrasonic cleaning machine for cleaning.
And step six, detecting the machined workpiece, wherein the quality of the inner surface of the workpiece reaches an expected target, and finishing polishing.
The invention has the following beneficial results:
(1) The invention provides a method and a device for polishing the inner wall of a slender pipe, which overcome the defect that the slender pipe with smaller aperture (less than phi 2 mm) cannot be processed by the traditional method based on the fluidity of fluid and ensure the wide practicability of the processing of a device workpiece.
(2) The invention adopts the electromagnetic directional valve, the cylinder and the injector to cause the polishing solution to repeatedly scour the inner surface of the slender pipe workpiece axially, thereby realizing the recycling of the polishing solution, saving the cost and bringing great environmental protection benefits.
(3) The axial feed motion of the polishing solution in the slender pipe workpiece is finally controlled by the electromagnetic directional valve, and the scouring times of the polishing solution can be accurately known through the counting function of the electromagnetic directional valve, so that the quantitative optimization of the processing parameters can be conveniently carried out according to the inner surface quality of the processed workpiece.
(4) The automatic processing device realizes the automatic processing of the inner surface of the slender pipe workpiece, and the required devices are low-cost devices, so that the labor and material cost during workpiece processing can be greatly reduced.
Drawings
Fig. 1 is an overall flow chart of the apparatus of the present application.
Fig. 2 is a schematic view of the polishing of the inner wall surface of the workpiece in the present application.
Fig. 3 is a block diagram of a cylinder in the present application.
Fig. 4 is a structural view of a solenoid directional valve in the present application.
In the figure: 1, an air pump; 2, a pressure regulating valve; 3, an electromagnetic directional valve; 4, controlling the electromagnetic directional valve; 5, a three-way pipe; 6, a first air cylinder; 7a connector; syringe No. 8; 9 fixing the bracket; 10 a fixed table; 11, a workpiece; syringe No. 12; a No. 13 cylinder; 14 sealing the chuck; 15, polishing solution; 16 cylinder pistons; 17 a cylinder piston rod; 18 a right cylinder chamber; 19 left cylinder chamber; 20 pressure relief holes; 21 right exhaust port; 22 left exhaust hole.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. 1, a flow diagram of a fluid scouring process for polishing the interior surface of an elongated tubular workpiece according to the present invention is shown.
An abrasive scouring and polishing device for the inner surface of an elongated tube is suitable for polishing the inner surface of the elongated tube to reduce the surface roughness of the elongated tube. The slender pipe inner wall polishing process device comprises an air pump 1, a pressure regulating valve 2, an electromagnetic directional valve 4, a first air cylinder 6, a first injector 8, a fixed platform 10, a second injector 12 and a second air cylinder 13.
The injection cavities of the first injector 8 and the second injector 12 of the device are filled with polishing liquid 15 for polishing the inner surface of a workpiece 11, and the two injectors are respectively fixed on a working platform through fixing supports 9. A push rod of the first syringe 8 is connected with a piston rod of the first cylinder 6 through a connector 7, so that the movement directions of the first syringe and the first cylinder are consistent; the push rod of the second syringe 12 is connected with the piston rod of the first cylinder 13 through the connector 7, so that the movement directions of the two are consistent.
A workpiece 11 of the device is fixed on a working platform through a fixing platform 10, and the left section and the right section of the workpiece are respectively communicated with injection heads of a first injector 12 and a second injector 8 through a sealing chuck 14, so that polishing liquid in an injection cavity of the injectors can enter the workpiece 11 through the extrusion of the pistons of the injectors.
The air pump 1 is communicated with the first air cylinder 6 and the second air cylinder 13 through air transmission pipelines, and the air transmission pipelines are sequentially provided with the pressure regulating valve 2, the electromagnetic reversing valve 3 and the two three-way pipes 5. The air pump 1 is used for generating high-pressure air, the high-pressure air is conveyed to the pressure regulating valve 2 through the air conveying pipe, the pressure regulating valve 2 regulates the conveyed initial high-pressure air to working gas with proper pressure, and then the working gas is conveyed to the electromagnetic reversing valve 3 through the air conveying pipe. The electromagnetic directional valve 3 is controlled by the electromagnetic directional valve controller 4 and is used for alternately discharging the working gas conveyed by the pressure regulating valve 2 from the left exhaust hole 22 and the right exhaust hole 21 of the directional valve 3 in sequence. The two exhaust holes of the electromagnetic directional valve 3 are externally connected with a three-way pipe 5, and the two three-way pipes 5 are used for dividing working gas exhausted from the exhaust holes of the electromagnetic directional valve 3 into two paths to respectively enter different cylinder cavities of the first cylinder 6 and the second cylinder 13. When the left exhaust hole 22 of the electromagnetic directional valve 3 works, working gas respectively enters a left cylinder cavity of the first cylinder 6 and a left cylinder cavity of the second cylinder 13 through the three-way pipe 5, so that the piston 16 of the second cylinder 13 is pressed to drive the piston rod and the push rod of the second injector 12 to move rightwards, and gas in the right cylinder cavity of the second cylinder enters the electromagnetic directional valve 3 along a gas pipeline and is exhausted from the pressure relief hole 20; the piston of the first cylinder 6 is pressed to drive the piston rod and the push rod of the first injector 8 to move rightwards, and the gas in the right cylinder cavity enters the electromagnetic directional valve 3 along the gas transmission pipeline and is discharged from the pressure relief hole 20. So that the polishing liquid flows from the left end to the right end of the workpiece 11 to flush the inner wall thereof. When the right exhaust hole 21 of the electromagnetic directional valve 3 works, working gas respectively enters the right cylinder cavity of the first cylinder 6 and the right cylinder cavity of the second cylinder 13 through the three-way pipe 5, so that the piston of the second cylinder 13 is pressed to drive the piston rod and the push rod of the second injector 12 to move leftwards, and gas in the left cylinder cavity of the electromagnetic directional valve enters the electromagnetic directional valve 3 along a gas transmission pipeline and is exhausted from the pressure relief hole 20; the piston of the first cylinder 6 is pressed to drive the piston rod and the push rod of the first injector 8 to move leftwards, and the gas in the left cylinder cavity enters the electromagnetic directional valve 3 along the gas transmission pipeline and is discharged from the pressure relief hole 20. So that the polishing liquid flows from the right end to the left end of the workpiece 11 to flush the inner wall thereof. This is repeated, thereby achieving a polishing effect on the inner wall of the workpiece 11.
According to the above embodiment, the present invention provides a method for polishing the inner wall of an elongated tubular workpiece, comprising the steps of:
step one, installing and connecting the polishing device according to the flow sequence and checking the air tightness of the device.
And step two, the slender pipe workpiece to be processed is made of stainless steel, the inner diameter phi is 1.4mm, the outer diameter phi is 1.6mm, and the original roughness of the inner surface is 200 mu m. Selecting silicon oxide as a polishing medium, preparing 200mL of polishing solution 15 with water according to the mass ratio of 3:7, stirring the prepared polishing solution 15 for 10 minutes by using a magnetic stirrer, and sucking the uniformly stirred polishing solution into inner cavities of the first syringe 8 and the second syringe 12.
And step three, fixing the slender pipe workpiece 11 to be processed through the fixing table 10, wherein the left end of the slender pipe workpiece is communicated with the inner cavity of the second syringe 12 through the sealing chuck 14, and the right end of the slender pipe workpiece is communicated with the inner cavity of the first syringe 8 through the sealing chuck 14.
And step four, opening the air pump 1, and adjusting the pressure of the conveyed air to 0.1MPa through the pressure regulating valve 2.
And step five, opening the electromagnetic directional valve 3 through the electromagnetic directional valve controller 4, axially washing the inner wall of the slender pipe workpiece 11 to be processed back and forth by the polishing solution under the action of a first injector 8 and a second injector 12 which are respectively driven by a first cylinder 6 and a second cylinder 13, wherein the washing speed is 35mL/s, and continuously washing 2000 back and forth.
And step five, after the processing is finished, closing the electromagnetic directional valve 3 and the air pump 1 in sequence, taking down the stainless steel slender pipe workpiece 11, putting the stainless steel slender pipe workpiece into an ultrasonic cleaning machine for cleaning, and drying the inner surface of the slender pipe workpiece by using an air gun to remove residual polishing solution in the slender pipe workpiece.
And sixthly, beveling the processed slender pipe, and detecting the surface quality of the inner surface of the section, wherein the total roughness Ra58 nm is about, and the local roughness optimally reaches Ra39.401 nm.
The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.
Claims (4)
1. An abrasive scouring and polishing device for the inner surface of an elongated tube, which is suitable for polishing the inner surface of the elongated tube to reduce the surface roughness, wherein the inner diameter phi of the elongated tube is below 2 mm; the polishing device is characterized by comprising an air pump (1), a pressure regulating valve (2), an electromagnetic directional valve (3), a first cylinder (6), a first injector (8), a second injector (12), a second cylinder (13) and a sealing chuck (14);
polishing liquid (15) for polishing the inner surface of a workpiece (11) is contained in injection cavities of the first injector (8) and the second injector (12), and the two injectors are fixed on the working platform through fixing supports (9) respectively; push rods of the first syringe (8) and the second syringe (12) are respectively connected with piston rods of the first cylinder (6) and the second cylinder (13) through connectors (7), and the movement directions are ensured to be consistent;
a workpiece (11) to be processed is placed between the first injector (8) and the second injector (12), the left end and the right end of the workpiece (11) are respectively communicated with the injection head through a sealing chuck (14), and polishing liquid (15) can enter an inner hole of the workpiece (11) through the extrusion of an injector piston;
the air pump (1) is respectively communicated with the first air cylinder (6) and the second air cylinder (13) through air transmission pipelines, and the air transmission pipelines are sequentially provided with a pressure regulating valve (2), an electromagnetic directional valve (3) and two three-way pipes (5); high-pressure air generated by the air pump (1) is conveyed to the pressure regulating valve (2) through the air conveying pipe to obtain working air, and then is conveyed to the electromagnetic directional valve (3) through the air conveying pipe; the electromagnetic directional valve (3) is controlled by an electromagnetic directional valve controller (4) and is used for sequentially and alternately discharging working gas conveyed by the pressure regulating valve (2) from a left exhaust hole (22) and a right exhaust hole (21) of the directional valve (3); the two exhaust holes of the electromagnetic directional valve (3) are externally connected with a three-way pipe (5), and each three-way pipe (5) is used for dividing working gas into two passages which respectively enter different cylinder cavities of a first cylinder (6) and a second cylinder (13); a pressure relief hole (20) is arranged on the electromagnetic directional valve (3);
when a left exhaust hole (22) of the electromagnetic directional valve (3) works, working gas respectively enters left cylinder cavities of the two cylinders through the three-way pipe (5), so that the two pistons are pressed to push rods of the two injectors to move rightwards, so that polishing liquid flows from the left end to the right end of the workpiece (11) to flush the inner wall of the workpiece; gas in right cylinder cavities of the two cylinders enters the electromagnetic directional valve (3) and is discharged from the pressure relief hole (20);
when a right exhaust hole (21) of the electromagnetic directional valve (3) works, working gas respectively enters right cylinder cavities of the two cylinders through the three-way pipe (5), so that the two pistons are pressed to push rods of the two injectors to move leftwards, so that polishing liquid flows from the right end to the left end of the workpiece (11) to flush the inner wall of the workpiece; the air in the left air cylinder cavities of the two air cylinders enters the electromagnetic directional valve (3) and is discharged from the pressure relief hole (20);
the above steps are repeated, so that the polishing effect on the inner wall of the workpiece (11) is achieved.
2. The device for abrasive scouring and polishing of the inner surface of the elongated tube according to claim 1, wherein the second cylinder (13) has two cylinder chambers, namely a left cylinder chamber (19) and a right cylinder chamber (18), which are separated by a cylinder piston (16), and a cylinder piston rod (17) is connected with the cylinder piston (16) and the motion states of the two are kept consistent; when a left cylinder (19) of the second cylinder (13) is filled with air, a cylinder piston (16) is pressed to drive a cylinder push rod (17) to move rightwards, and air in a right cylinder cavity (18) flows through a three-way pipe (5) along an air transmission pipeline under the pressure of the cylinder piston (16) to enter an electromagnetic directional valve (3) and is discharged from a pressure relief hole (20); when the right cylinder (18) of the second cylinder (13) is charged, the cylinder piston (16) is pressed to drive the cylinder push rod (17) to move leftwards, and the gas in the left cylinder cavity (19) is pressed by the cylinder piston (16) and flows through the three-way pipe (5) along the gas transmission pipeline to enter the electromagnetic directional valve (3) and is discharged from the pressure relief hole (20); the principle and the structure of the first cylinder (6) and the second cylinder (13) are completely consistent.
3. An abrasive scouring and polishing device for the inner surface of an elongated tube as claimed in claim 1, wherein the polishing medium in said polishing liquid (15) is selected according to the material of the elongated tube workpiece (11) to be processed.
4. A process for polishing the inner wall of an elongated tube based on the device of any of claims 1-3, comprising the steps of:
step one, installing and connecting polishing devices according to a flow sequence and checking the air tightness of the devices;
selecting a proper polishing medium according to the workpiece material to prepare polishing solution (15), uniformly stirring the prepared polishing solution (15), and sucking the polishing solution into the inner cavities of the first injector (8) and the second injector (12);
fixing a slender pipe workpiece (11) to be processed through a fixing table 10, wherein the left end of the slender pipe workpiece is communicated with the inner cavity of a second injector (12) through a sealing chuck (14), and the right end of the slender pipe workpiece is communicated with the inner cavity of a first injector (8) through the sealing chuck (14);
step four, the air pump (1) is started, and the pressure of the conveyed air is adjusted to be 0.1MPa through the pressure regulating valve (2);
step five, the electromagnetic directional valve (3) is opened through the electromagnetic directional valve controller (4), and polishing liquid axially washes the inner wall of the slender pipe workpiece (11) to be processed back and forth under the action of a first injector (8) and a second injector (12) which are respectively driven by a first cylinder (6) and a second cylinder (13), so that the slender pipe workpiece is polished;
step five, after the processing is finished, closing the electromagnetic directional valve (3) and the air pump (1) in sequence, taking down the slender pipe workpiece (11), and putting the slender pipe workpiece into an ultrasonic cleaning machine for cleaning;
and step six, detecting the workpiece, wherein the quality of the inner surface of the workpiece reaches an expected target, and finishing the polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211422551.8A CN115673997A (en) | 2022-11-15 | 2022-11-15 | Process and device for scouring and polishing abrasive on inner surface of elongated tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211422551.8A CN115673997A (en) | 2022-11-15 | 2022-11-15 | Process and device for scouring and polishing abrasive on inner surface of elongated tube |
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| Publication Number | Publication Date |
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| CN115673997A true CN115673997A (en) | 2023-02-03 |
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|---|---|---|---|
| CN202211422551.8A Pending CN115673997A (en) | 2022-11-15 | 2022-11-15 | Process and device for scouring and polishing abrasive on inner surface of elongated tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117300880A (en) * | 2023-11-29 | 2023-12-29 | 连云港国伦石英制品有限公司 | Quartz tube inner wall equipment of polishing |
-
2022
- 2022-11-15 CN CN202211422551.8A patent/CN115673997A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117300880A (en) * | 2023-11-29 | 2023-12-29 | 连云港国伦石英制品有限公司 | Quartz tube inner wall equipment of polishing |
| CN117300880B (en) * | 2023-11-29 | 2024-02-09 | 连云港国伦石英制品有限公司 | Quartz tube inner wall equipment of polishing |
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