WO2025016296A1 - 一种细长管内表面流体抛光装置与方法 - Google Patents

一种细长管内表面流体抛光装置与方法 Download PDF

Info

Publication number
WO2025016296A1
WO2025016296A1 PCT/CN2024/105108 CN2024105108W WO2025016296A1 WO 2025016296 A1 WO2025016296 A1 WO 2025016296A1 CN 2024105108 W CN2024105108 W CN 2024105108W WO 2025016296 A1 WO2025016296 A1 WO 2025016296A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
polishing
fluid
magnetic
piston cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/105108
Other languages
English (en)
French (fr)
Inventor
郭江
康仁科
李启凯
郭东明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Publication of WO2025016296A1 publication Critical patent/WO2025016296A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/02—Bench grinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/112—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using magnetically consolidated grinding powder, moved relatively to the workpiece under the influence of pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
    • B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents

Definitions

  • the invention belongs to the field of fluid precision machining, and relates to a device and method for polishing the fluid on the inner surface of a slender tube by using a magnetic field.
  • slender tube parts with small diameter and large aspect ratio are widely used in aerospace, biomedicine, chemical and chemical industries, etc., to perform sample extraction, fluid transportation, heat conduction and heat dissipation, etc.
  • the inner surface of the slender tube is required to have a high degree of smoothness.
  • the processes for preparing slender tube parts are mainly drawing and extrusion. When preparing small-diameter and variable-diameter tubes, wrinkles are inevitably generated on the inner surface, resulting in the inner surface roughness not meeting industrial requirements, and further polishing is required.
  • the main methods for polishing the inner surface of slender tubes are mechanical polishing, abrasive flow polishing, magnetic grinding and electrolytic polishing.
  • mechanical polishing uses a tool head to probe into the inner surface of the slender tube, but for slender tubes with a diameter of 1 mm or less, it is difficult for the tool to penetrate;
  • abrasive flow polishing uses high-pressure and high-viscosity non-Newtonian fluids for polishing, but the pressure in the slender tube decays severely along the way, resulting in serious uneven polishing;
  • magnetic grinding uses magnets to drive the magnetic particles in the tube to polish, but the magnetic particles cannot effectively and evenly cover the inner surface due to the difficulty of flowing;
  • electrolytic polishing is to use the redox reaction to dissolve the workpiece as the anode in the electrolyte, but it is difficult for the cathode to penetrate into the interior of the slender tube, and it is difficult to avoid short circuits.
  • Chinese patent CN102211295A proposes a magnetorheological polishing device for the inner surface of a capillary.
  • the device uses a piston to inject magnetorheological fluid into the capillary, and at the same time starts the vibration drive system to vibrate the capillary to improve the fluidity of the magnetorheological fluid.
  • the electromagnet is started to generate a magnetic field to form a columnar polishing mold in the capillary, causing it to rotate around the capillary and move along the axial direction of the capillary to polish the inner surface of the capillary.
  • Electromagnets are used to drive tiny magnetic particles to grind the tube wall, and the polishing efficiency is extremely low.
  • Chinese patent CN201455796U proposes a steel pipe inner surface polishing device, which can effectively polish the entire steel pipe inner surface.
  • the device polishes the inner surface of the steel pipe by a polishing rope.
  • the polishing rope passes through the steel pipe to be polished and is sleeved on the driving wheel and the driven wheel, and the driving wheel is driven by a motor.
  • a magnetic core is provided in the polishing rope, and a magnetic strip that can generate mutual attraction with the magnetic core is provided below the steel pipe to be polished.
  • the steel pipe rotates under the drive of the motor, thereby achieving the polishing process of the inner surface of the steel pipe.
  • the device has a simple structure and obvious effect, but it uses a polishing rope for polishing, which has high requirements for the polishing rope and limited polishing effect. It cannot meet the polishing requirements for slender tubes with high requirements for the inner surface quality. At the same time, this method has high requirements for the aperture of the slender tube and is not suitable for polishing slender tubes with smaller apertures. Moreover, this method is difficult to use for slender tubes with poor rigidity, and it is impossible to keep the polishing rope close to the inner surface of the slender tube.
  • Chinese patent CN202137643U proposes a magnetic polishing machine for the inner surface of a slender tube, which can quickly remove burrs, polish and clean the inner surfaces of various metal tubes and non-metallic tubes such as hard plastics.
  • an iron core wrapped with a coil is arranged below and on the side of the non-magnetic slender tube. Alternating current is passed through the iron core to generate a reciprocating alternating magnetic field. Magnetic abrasive particles are placed in the tube cavity, and the magnetic abrasive particles are driven by the magnetic field generated by the iron core.
  • the motor drives the slender tube to rotate, thereby polishing its inner surface.
  • This device can complete the polishing of the inner surface that cannot be performed or the processing quality cannot be guaranteed by traditional technology, but the coil generates severe heat after being energized, and there is a lack of corresponding heat dissipation measures; at the same time, the transmission wheel can only drive large-diameter tubes, and this device is not suitable for processing small-diameter slender tubes.
  • Chinese patent CN110815027A proposes a device for polishing the inner hole of a slender tube, which has a simple structure and can be operated by one person.
  • the device uses a flexible rod to connect the grinding head to the output end of the motor.
  • the flexible rod is elastic.
  • When the motor rotates, one end of the flexible rod connected to the grinding head swings circumferentially relative to the axis of the flexible rod, thereby polishing the inner surface of the slender tube.
  • the polished tubes processed by this device have a high pass rate, low labor consumption, high polishing efficiency, and good polishing effect.
  • this method is limited by the size of the grinding head, and the grinding head cannot enter the interior of the slender tube, causing the method to fail.
  • Chinese patent CN206998477U proposes a slender pipe inner hole polishing machine, which uses yarn to axially polish the inner hole of the workpiece.
  • the yarn passes through the guide wheel, the inner hole of the workpiece, and the roller in turn.
  • the abrasive is tightly fixed and driven by the yarn to move axially and radially relative to the inner hole of the workpiece, thereby polishing the inner hole.
  • the yarn can enter the small inner hole, the abrasive driven by the yarn is very small and cannot effectively polish the inner hole surface.
  • polishing tools of the above patents and other slender tube inner surface polishing devices are mostly polishing ropes and polishing rods, which cannot meet the polishing requirements of small-diameter slender holes. Therefore, it is urgent to provide a slender hole polishing device and method for smaller apertures to ensure polishing efficiency and polishing accuracy.
  • the present invention aims to provide a fluid polishing device and method for the inner surface of a slender tube with magnetically controlled flow field scouring intensity, which can achieve rapid and uniform polishing of the inner surfaces of straight tubes, variable-diameter tubes, and variable-roughness tubes, thereby reducing the along-the-line resistance of the medium in the tube, improving sampling and injection accuracy, and enhancing the stability of the fluid in the tube, thereby solving the problems of limited, uneven, and low-efficiency polishing of the inner surfaces of existing slender tubes.
  • the present invention provides the following technical solutions:
  • a fluid polishing device for the inner surface of a slender tube comprises a working platform, a fluid processing unit and a magnetron fluid unit; there are two fluid processing units which are symmetrically installed on the left and right sides of the working platform; the left and right ends of the slender tube, i.e. the workpiece, are respectively connected to the fluid processing units on the left and right sides.
  • the magnetron fluid unit is located on the lower side of the workpiece.
  • the magnetic field applied by the magnetic pole controls the magnetic particles in the polishing liquid in the fluid processing unit to form a magnetic chain with a certain yield strength along the direction of the magnetic force, which is adsorbed on the inner surface of the workpiece to form a local blocking block, thereby reducing the actual flow diameter of the polishing liquid in the blocking area.
  • the fluid processing unit includes a piston, a piston cylinder, a piston rod, a rotating part, a connecting part and a piston cylinder bracket.
  • the piston cylinder is fixedly connected to the work platform through the piston cylinder bracket, the inner end of the piston rod is fixedly connected to the piston, and the piston rod is slidably connected to the opening at the outer end of the piston cylinder;
  • the piston is slidably connected to the inner surface of the piston cylinder, and the cavity between the inner side of the piston and the inner surface of the piston cylinder is filled with polishing liquid;
  • the outlet at the inner end of the piston cylinder is connected to one end of the rotating part, and the other end of the rotating part is connected to the connecting part, and the other end of the connecting part clamps one end of the workpiece through an internal buckle.
  • the magnetic control fluid unit comprises a magnet, a guide rail, a guide rail bracket and a magnetic yoke.
  • the guide rail is installed on the guide rail bracket, and the axial direction of the guide rail is parallel to the axial direction of the workpiece;
  • the yoke is slidably connected to the guide rail;
  • the magnet is fixed on the yoke; the distance between the magnet and the workpiece is 1-3mm.
  • the rotating part comprises a fixed section and a rotating section, wherein the fixed section and the rotating section are connected via an internal bearing, the fixed section is connected to the piston cylinder, and the moving section is connected to the workpiece via a connecting piece.
  • each magnet includes a pole and a pole tip.
  • the two magnets and the yoke form an isosceles triangle structure with an upper opening, and the distance between the pole tip and the workpiece is 1-3mm.
  • the rotation speed of the workpiece is 6-20 revolutions per minute.
  • the magnet moves along the guide rail to perform magnetic control flow field polishing on each point on the axial direction of the inner surface of the workpiece.
  • the polishing medium in the polishing liquid is selected according to the workpiece material: cerium oxide is selected when the workpiece material is quartz glass, aluminum oxide is selected when the workpiece material is stainless steel, and diamond powder is selected when the workpiece material is cast iron.
  • a method for fluid polishing the inner surface of a slender tube, using a fluid polishing device for the inner surface of a slender tube for polishing comprises the following steps:
  • Step 1 Select appropriate polishing media according to the workpiece material to prepare the polishing liquid, stir the prepared polishing liquid evenly and then suck it into the inner cavity of the piston cylinder.
  • Step 2 Connect the piston cylinder outlet to the rotating part and the connecting part through a threaded connection.
  • the connecting part is connected to the two ends of the workpiece through its internal buckle. After the overall connection, check the sealing.
  • Step 3 Place the magnet on the yoke so that the distance between the magnetic pole tip and the outer wall of the workpiece is 1-3 mm.
  • Step 4 Rotate the rotating part through an external transmission device to control the speed of the workpiece to 6-20 revolutions per minute.
  • Step 5 Use an external push rod to push the piston rods at both ends to move synchronously, ensuring that the polishing liquid is pushed out by the piston cylinder on one side while the polishing liquid is sucked into the piston cylinder on the other side.
  • the polishing liquid flushes back and forth on the inner surface of the workpiece under the pushing action of the piston rod, thereby polishing the inner surface of the workpiece.
  • Step 6 Move the magnet along the guide rail to adsorb magnetic powder in different areas of the workpiece to adhere to the tube wall to produce a blocking effect.
  • Step 7 After the processing is completed, stop rotating, remove the workpiece, and put it into the ultrasonic cleaning machine for cleaning.
  • Step 8 Inspect the workpiece after processing, and if the inner surface quality reaches the expected target, the polishing process is completed.
  • the present invention has the following beneficial effects:
  • the present invention uses a magnet to adsorb magnetic particles in the magnetorheological polishing fluid flowing in a tube.
  • the magnetic particles adhere to the tube wall to form a regional magnetic blockage, which reduces the cross-sectional area of the flow channel in the area.
  • the flow velocity of the magnetic fluid containing polishing abrasives increases rapidly when passing through the area, thereby controllably changing the flow field intensity and polishing intensity of the area.
  • the present invention utilizes a rotary joint to connect the relative rotation between the slender tube and the fixed polishing liquid delivery pipeline.
  • the rotation of the slender tube ensures the uniformity of the inner surface area of the selective polishing tube, while increasing the relative movement distance between the abrasive particles in the flushing fluid and the inner surface of the tube, thereby improving the removal efficiency.
  • the present invention adopts the method of magnetic field selection control polishing to completely solve the problems of fluid pressure attenuation along the process and uneven polishing, and can also solve the problem that traditional fluid polishing cannot polish variable-caliber slender tubes and variable roughness.
  • the use of magnetic fluid polishing liquid solves the problem that magnetic particles are difficult to enter small-caliber slender tubes. Since the present invention mainly uses polishing abrasive particles entrained by the flow field for polishing, the inner surface of the entire slender tube has different degrees of material removal, and the polishing efficiency of the present invention is also much higher than that of traditional magnetic grinding.
  • magnetic conductive tools such as iron wires and magnetic needles can be used as flow channel blockers. Under the suction of the external magnet, these magnetic conductive tools are tightly adsorbed on the inner surface of the slender tube, which can not only block the flow field, but also increase the blocking length along the axial direction of the slender tube.
  • the present invention is based on the fluidity of magnetorheological fluid and can achieve the purpose of extremely fine diameter and extremely It can process slender tubes with large aspect ratio, such as needle tubes with length > 200mm and inner diameter ⁇ 1mm.
  • FIG. 1 is a schematic diagram of the structure of the device of the present invention.
  • FIG. 2 is a cross-sectional view of a fluid processing unit according to the present invention (section lines are not shown).
  • FIG. 3 is a schematic diagram of a magnetron fluid unit of the present invention.
  • FIG. 4 is a cross-sectional view of FIG. 3 .
  • FIG. 5 is a partial enlarged view of FIG. 4 .
  • piston rod 1. piston rod; 2. piston cylinder; 3. piston cylinder bracket; 4. piston; 5. rotating part; 6. connecting part; 7. workpiece; 8. guide rail bracket; 9. guide rail; 10. yoke; 11. magnetic pole; 12. magnetic pole tip; 13. working platform.
  • a fluid polishing device for the inner surface of a slender tube comprises a working platform 13, a fluid processing unit and a magnetic control fluid unit; there are two fluid processing units, which are symmetrically installed on the left and right sides of the working platform 13; the left and right ends of the slender tube, i.e., the workpiece 7, are respectively connected to the fluid processing units on the left and right sides;
  • the magnetic control fluid unit is located at the lower side of the workpiece 7.
  • the magnetic field applied by the magnetic pole 11 controls the magnetic particles in the polishing liquid in the fluid processing unit to form a magnetic chain with a certain yield strength along the magnetic force direction, which is adsorbed on the inner surface of the workpiece 7 to form a local blocking block, thereby reducing the actual flow diameter of the polishing liquid in the blocking area.
  • the fluid processing unit comprises a piston 4, a piston cylinder 2, a piston rod 1, a rotating member 5, a connecting member 6 and a piston cylinder bracket 3.
  • the piston cylinder 2 is fixedly connected to the working platform 13 through the piston cylinder bracket 3.
  • the inner end of the piston rod 1 is fixedly connected to the piston 4, and the piston rod 1 is slidably connected to the opening of the outer end of the piston cylinder 2; the piston 4 is slidably connected to the inner surface of the piston cylinder 2, and the inner side of the piston 4 is connected to the inner surface of the piston cylinder 2.
  • Polishing liquid is poured into the cavity between the surfaces; the outlet at the inner end of the piston cylinder 2 is connected to one end of the rotating member 5, the other end of the rotating member 5 is connected to the connecting member 6, and the other end of the connecting member 6 clamps one end of the workpiece 7 through an internal buckle;
  • the magnetron fluid unit comprises a magnet, a guide rail 9, a guide rail bracket 8 and a yoke 10.
  • the guide rail bracket 8 is located below the workpiece 7 and is fixedly connected to the workpiece 7 platform;
  • the guide rail 9 is mounted on the guide rail bracket 8, and the axial direction of the guide rail 9 is parallel to the axial direction of the workpiece 7;
  • the yoke 10 is slidably connected to the guide rail 9;
  • the magnet is fixed on the yoke 10; and the distance between the magnet and the workpiece 7 is 1-3 mm.
  • the rotating member 5 includes a fixed section and a rotating section, the fixed section and the rotating section are connected via an internal bearing, the fixed section is connected to the piston cylinder 2, and the moving section is connected to the workpiece 7 via a connecting member 6.
  • each magnet includes a pole 11 and a pole tip 12.
  • the two magnets and the yoke 10 form an isosceles triangle structure with an upper opening, and the distance between the pole tip 12 and the workpiece 7 is 1-3 mm.
  • the rotation speed of the workpiece 7 is 6-20 revolutions per minute.
  • the magnet moves along the guide rail 9 to perform magnetic control flow field polishing on each point on the axial direction of the inner surface of the workpiece 7 .
  • the polishing medium in the polishing liquid is selected according to the workpiece material: cerium oxide is selected when the workpiece material is quartz glass, aluminum oxide is selected when the workpiece material is stainless steel, and diamond powder is selected when the workpiece material is cast iron.
  • a method for fluid polishing the inner surface of a slender tube, using a fluid polishing device for the inner surface of a slender tube for polishing comprises the following steps:
  • Step 1 Select a suitable polishing medium according to the material of the workpiece 7 to prepare a polishing liquid, stir the prepared polishing liquid evenly and then suck it into the inner cavity of the piston cylinder 2.
  • Step 2 Connect the outlet of the piston cylinder 2 to the rotating member 5 and the connecting member 6 through threaded connection.
  • the connector 6 is connected to both ends of the workpiece 7 through its internal buckles, and the sealing is checked after the overall connection.
  • Step 3 Place the magnet on the yoke 10 so that the distance between the magnetic pole tip 12 and the outer wall of the workpiece 7 is 1-3 mm.
  • Step 4 Rotate the rotating member 5 through an external transmission device to control the speed of the workpiece 7 to be 6-20 revolutions per minute.
  • Step 5 Use an external push rod to push the piston rods 1 at both ends to move synchronously, ensuring that the polishing liquid is pushed out by the piston cylinder 2 on one side while the polishing liquid is sucked into the piston cylinder 2 on the other side.
  • the polishing liquid flushes back and forth on the inner surface of the workpiece 7 under the pushing action of the piston rod 1, thereby polishing the inner surface of the workpiece 7.
  • Step 6 Move the magnet along the guide rail 9 to adsorb magnetic powder in different areas of the workpiece 7 to adhere to the pipe wall to produce a blocking effect.
  • Step 7 After the processing is completed, the rotation is stopped, the workpiece 7 is removed and placed in an ultrasonic cleaning machine for cleaning.
  • Step 8 The processed workpiece 7 is inspected, and its inner surface quality reaches the expected target, and the polishing process is completed.
  • Two fluid machining units clamp the two ends of the workpiece 7.
  • the fluid machining units contain polishing liquid.
  • the polishing liquid flows through the workpiece 7 at a certain speed under a certain pressure.
  • the abrasive particles in the polishing liquid scratch, plow and wear the inner surface material of the workpiece 7, thereby polishing the inner surface of the workpiece 7.
  • the magnetron fluid unit is located on one side of the workpiece 7.
  • the magnetic field applied by the magnetic pole 11 controls the magnetic particles in the polishing liquid to form a magnetic chain with a certain yield strength along the direction of the magnetic force, forming a blocking block close to the inner surface of the workpiece 7, thereby changing the actual flow diameter of the polishing liquid in this area, greatly improving the flow speed of the polishing liquid at this location, and thereby improving the material removal efficiency in this area.
  • the piston cylinder 2 is fixedly connected to the work platform 13 through the piston cylinder bracket 3, which is used to determine the position of the piston cylinder 2 and provide support; the workpiece 7 is located between the two piston cylinders 2, ensuring that the polishing liquid in the inner cavity of the piston cylinder 2 can pass through the inner surface of the workpiece 7 in a straight-through manner during operation; the piston 4 is in contact with the inner surface of the piston cylinder 2, and the piston 4 can move flexibly in the piston cylinder 2, and at the same time, the piston 4 is sealed with the inner surface of the piston cylinder 2, ensuring that the polishing liquid can work under pressure under the action of the piston 4; the outlet of the piston cylinder 2 is connected to the rotating member 5, ensuring that the piston cylinder 2 remains fixed when the workpiece 7 rotates, which is convenient for the piston 4 to work; the rotating member 5 The other end is connected to the connecting piece 6, and the other end of the connecting piece 6 clamps the workpiece 7; the two ends of the workpiece 7 are respectively connected to a connecting piece 6 to ensure the
  • the guide rail 9 is suspended below the workpiece 7 by the guide rail bracket 8, and the axial direction of the guide rail 9 is parallel to the axial direction of the workpiece 7, which is used to determine the moving direction and moving range of the magnet; the yoke 10 contacts the guide rail 9 through the hole groove below, and can move linearly on the guide rail 9; the magnet is fixed on the yoke 10 to ensure that it can move linearly below the workpiece 7, thereby controlling the magnetic field range; the magnet needs to be as close to the workpiece 7 as possible to ensure that the polishing liquid in the workpiece 7 can be subjected to a sufficiently large magnetic field force.
  • the rotation of the workpiece 7 is achieved by rotating the rotating member 5.
  • the rotating member 5 is divided into two parts, which are connected by a bearing in the middle, so that one part can rotate while the other part is fixed; one end of the rotating member 5 is connected to the piston cylinder 2 to keep it fixed, and the other end is connected to the workpiece 7 through the connecting member 6 to ensure that the workpiece 7 can rotate together with the rotating member 5.
  • the magnet can move at a uniform speed along the guide rail 9, and the controllability and uniformity of the polishing of the entire inner surface of the workpiece 7 are ensured by performing magnetic control flow field polishing on each point in the axial direction of the inner surface of the workpiece 7.
  • a method for polishing the inner surface of an elongated tube comprises the following steps:
  • Step 1 Install and connect the polishing device according to the process sequence and check the air tightness of the device.
  • Step 2 The workpiece 7 is made of stainless steel, with an inner diameter of ⁇ 0.3 mm, an outer diameter of ⁇ 0.6 mm, and an original inner surface roughness of 650 ⁇ m.
  • Alumina is selected as the polishing medium, and 200 mL of polishing liquid is prepared with water at a mass ratio of 3:7.
  • the prepared polishing liquid is stirred with a magnetic stirrer for 10 minutes, and the stirred polishing liquid is sucked into the inner cavity of the piston cylinder 2 in the two fluid processing units.
  • Step 3 The workpiece 7 is clamped and fixed between the two fluid processing units. Both ends of the workpiece 7 are connected to the inner cavity of the piston cylinder 2 through the connecting member 6 and the rotating member 5, so that the polishing liquid can smoothly enter the interior of the workpiece 7 for processing.
  • Step 4 Push and pull the piston rods 1 on the left and right sides in turn to allow the polishing liquid to move quickly in the inner cavities of the left and right piston cylinders 2 and the workpiece 7, so that the polishing liquid flow rate reaches 35 mL/s, and flush continuously for 1000 times; at the same time, rotate the rotating part 5 to make the workpiece 7 rotate slowly at a speed of 10 revolutions per minute.
  • Step 5 After the processing is completed, stop pushing the piston rod 1, remove the stainless steel workpiece 7, put it into an ultrasonic cleaning machine for cleaning, and use an air gun to dry its inner surface to remove the polishing liquid remaining therein.
  • Step six bevel the workpiece 7 after processing and inspect the surface quality of the inner surface at the cross section.
  • the overall roughness Ra is about 46nm, and the optimal local roughness reaches Ra 32nm.
  • FIG. 1 The front, back, left, and right of the present invention are only relative to FIG. 1 and do not constitute any limitation to the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

一种细长管内表面流体抛光装置，包括工作平台（13）、流体加工单元和磁控流体单元；流体加工单元有两个，对称安装在工作平台（13）的左右两侧；工件（7）的左右两端分别与左右两侧的流体加工单元连接；磁控流体单元位于工件（7）的下侧，通过磁极（11）施加的磁场控制流体加工单元中抛光液内的磁性颗粒，使其沿磁力方向形成具有一定屈服强度的磁链，吸附在工件（7）内表面形成局部阻塞块，减小抛光液在阻塞区域的实际流通口径，进而增大抛光液流速，提高抛光强度。还包括一种使用抛光装置的方法。抛光装置及其方法可以实现对极细口径、极大长径比的细长管的区域选择性抛光。

Description

一种细长管内表面流体抛光装置与方法 技术领域
本发明属于流体精密加工领域，涉及一种利用磁场控制细长管内表面流体抛光装置与方法。
背景技术
随着现代高端精密设备趋于小型化，具有小口径、大长径比特征的细长管类零件被广泛用于航空航天、生物医疗以及化学化工等领域，承担样品提取、流体输送、导热散热等作用。为了保证样品提取和流体输送的稳定性、精确性以及不残留，需求细长管内表面要求具有较高的光洁度。现阶段，制备细长管类零件的工艺主要为拉制成型与挤压成型，在制备小口径、变口径管时内表面不可避免的产生褶皱，导致内表面粗糙度不满足工业需求，必须进行进一步抛光处理。
目前，细长管内表面抛光的主要方法为机械抛光、磨粒流抛光、磁力研磨以及电解抛光。其中机械抛光采用工具头探入细长管内表面，但是对于口径在1mm及以下的细长管，工具探入困难；磨粒流抛光利用高压高粘度非牛顿流体进行抛光，但细长管内压力沿程衰减严重，导致抛光严重不均；磁力研磨利用磁铁带动管内磁性颗粒抛光，但磁性颗粒由于流动困难无法有效的均匀覆盖内表面；电解抛光是将利用氧化还原反应将工件作为阳极溶解在电解液中，但阴极难以深入细长管内部，难以避免短路的情况发生。
现有针对细长管内表面抛光的相关专利如下：
中国专利CN102211295A提出了一种毛细管内表面的磁流变抛光装置，该装置利用活塞向毛细管内注入磁流变液，同时启动振动驱动系统使毛细管发生振动，提高磁流变液的流动性。毛细管内完全充满磁流变液后，启动电磁铁产生磁场在毛细管内形成柱状抛光模，使其围绕毛细管进行旋转、沿毛细管轴向进行移动，对毛细管内表面进行抛光。该装置虽然引入了磁场与磁流变液，但是 采用电磁铁驱动极小的磁性颗粒对管壁进行研磨，抛光效率极低。
中国专利CN201455796U提出了一种钢管内表面抛光装置，可以有效地对整个钢管内表面进行抛光。该装置由抛光绳对钢管内表面进行抛光。抛光绳穿过待抛光钢管，并且套在主动轮、从动轮上，主动轮由电机驱动。抛光绳内设有磁芯，待抛光钢管的下方设有能与磁芯产生相互吸引力的磁条，同时钢管在电机的驱动下旋转，进而达到对钢管内表面的抛光加工。该装置结构简单，效果明显，但其使用抛光绳进行抛光，对抛光绳要求较高，抛光效果有限，对于内表面质量要求较高的细长管无法满足抛光要求。同时该方法对细长管孔径要求较高，不适用更小孔径的细长管抛光加工。而且针对刚度较差的细长管其方法难以使用，无法保持抛光绳对细长管内表面的紧密贴合。
中国专利CN202137643U提出了一种细长管内表面磁力抛光机，能够对各种金属管和硬质塑料等非金属管的内表面进行快速去除毛刺、抛光洗净。该装置中非磁性细长管下方和侧面配置缠绕有线圈的铁芯，对铁芯通交流电产生往复式交变磁场，管腔内置入磁性研磨粒，通过铁芯产生的磁场驱动磁性研磨粒，同时电动机带动细长管旋转，从而对其内表面进行抛光。该装置能够完成传统技术无法进行或无法保证加工质量的内表面的抛光处理，但线圈通电后发热严重，缺少相应的散热措施；同时传动轮只能对大孔径管进行传动，该装置不适用于小孔径细长管加工。
中国专利CN110815027A提出了一种细长管内孔抛光装置，其结构简单，一人即可操作。该装置采用柔性杆将磨头与电机输出端连接，柔性杆具有弹性，当电机转动时，柔性杆连接磨头的一端相对于柔性杆的轴线周向摆动，从而对细长管件内表面进行抛光。该装置加工的抛光管件合格率高，人员耗费小、抛光效率高、抛光效果好。但该方式对于一些较小孔径的细长管，受限于磨头的尺寸，其磨头无法进入其细长管内部，导致该方法失效。
中国专利CN206998477U提出了一种细长管件内孔抛光机，该装置通过纱线对工件内孔进行轴向抛光加工，纱线依次通过导向轮、工件内孔、滚筒进行夹 紧固定，由纱线带动磨料相对工件内孔进行轴向和径向运动，从而对内孔进行抛光，纱线虽然可以进入小内孔，但通过纱线带动的磨料很少，不能对内孔表面进行有效抛光。
以上专利及其他细长管内表面抛光装置其抛光工具多为抛光绳、抛光杆，无法实现小孔径细长孔的抛光要求，因此亟需提供一种针对更小孔径的细长孔抛光装置和方法，确保抛光效率及抛光精度。
发明内容
针对目前已有的抛光方案存在的问题，本发明要提供一种磁力控制流场冲刷强度的细长管内表面流体抛光装置与方法，能实现直管、变口径管、变粗糙度管内表面的快速均匀化抛光，从而减小管内介质的沿程阻力、提高采样以及注射精度、增强管内流体的稳定性，解决现有细长管内表面抛光受限、不均匀以及效率不高的问题。
为实现上述目的，本发明提供如下技术方案：
一种细长管内表面流体抛光装置，包括工作平台、流体加工单元和磁控流体单元；所述的流体加工单元有两个，对称安装在工作平台的左右两侧；细长管即工件的左右两端分别与左右两侧的流体加工单元连接。
所述的磁控流体单元位于工件的下侧，通过磁极施加的磁场控制流体加工单元中抛光液内的磁性颗粒沿磁力方向形成具有一定屈服强度的磁链，吸附在工件内表面形成局部阻塞块，减小抛光液在阻塞区域的实际流通口径。
所述的流体加工单元包括活塞、活塞缸、活塞杆、旋转件、连接件和活塞缸支架，所述的活塞缸通过活塞缸支架与工作平台固定连接，所述的活塞杆的内端与活塞固定连接、活塞杆与活塞缸外端的开口滑动连接；所述活塞与活塞缸内表面滑动连接，且活塞内侧与活塞缸内表面之间的腔体内灌注抛光液；所述的活塞缸内端的出口与旋转件的一端连接，所述的旋转件另一端与连接件连接，连接件另一端通过内部卡扣卡紧工件的一端。
所述的磁控流体单元包括磁铁、导轨、导轨支架和磁轭。所述的导轨支架 位于工件下方，与工件平台固定连接；所述的导轨安装在导轨支架上，导轨的轴向方向与工件轴向方向相互平行；所述的磁轭与导轨滑动连接；所述的磁铁固定在磁轭上；所述的磁铁与工件之间的距离为1-3mm。
所述的旋转件包括固定段和旋转段，所述的固定段和旋转段通过内部轴承连接，所述的固定段与活塞缸连接、移动段通过连接件与工件连接。
进一步的，所述的导轨有三条，等间距安装于与工作平台平行的平面内。
进一步的，所述的磁铁有两块，两块磁铁结构相同、对称安装在工件的前后两侧的磁轭上，每块磁铁包括磁极和磁极尖，两块磁铁与磁轭构成上开口的等腰三角形结构，磁极尖与工件之间的距离为1-3mm。
进一步的，所述的工件的旋转速度为6-20转每分钟。
进一步的，所述磁铁沿导轨移动，对工件内表面轴线方向上各点进行磁控流场抛光。
进一步的，所述的抛光液内的抛光介质根据工件材料进行选择：工件材料为石英玻璃时选择氧化铈，工件材料为不锈钢时选择氧化铝，工件材料为铸铁时选择金刚石粉。
一种细长管内表面流体抛光方法，利用细长管内表面流体抛光装置进行抛光，包括如下步骤：
步骤一、根据工件材料选取合适的抛光介质配制抛光液，将配置好的抛光液搅拌均匀后吸入活塞缸内腔中。
步骤二、通过螺纹连接将活塞缸出口与旋转件以及连接件连通，连接件通过其内部卡扣与工件的两端连接，整体连接后检查密封性。
步骤三、将磁铁置于磁轭上，使磁极尖与工件外壁的距离为1-3mm。
步骤四、通过外部传动装置转动旋转件，控制工件转速在6-20转每分钟。
步骤五、通过外部推杆推动左右两端活塞杆同步运动，保证一侧活塞缸推出抛光液的同时另一侧活塞缸内吸入抛光液，抛光液在活塞杆的推动作用下来回冲刷工件内表面，从而对工件内表面进行抛光加工。
步骤六、沿导轨移动磁铁，吸附工件内不同区域磁粉贴附管壁产生阻塞效果。
步骤七、加工结束，停止转动，取下工件，放入超声波清洗机进行清洗。
步骤八、将加工后工件进行检测，其内表面质量达到预期目标，抛光加工结束。
与现有技术相比，本发明的有益效果如下：
1、本发明采用磁铁吸附管内流动的磁流变抛光液中的磁性颗粒，磁性颗粒贴附管壁形成区域性磁块阻塞，致使该区域流道的截面积减小，包含抛光磨粒的磁流体在通过该区域时流速迅速增加，可控地改变该区域的流场强度和抛光强度。
2、本发明利用旋转接头衔接了细长管与固定抛光液输送管路之间的相对转动，细长管的转动保证了选择性抛光管内表面区域的均匀性，同时提高了冲刷流体中磨粒与管内表面的相对运动距离，进而提高了去除效率。
3、本发明与传统流体抛光相比，采用磁场选区控制抛光的方式完全解决流体压力沿程衰减、抛光不均匀的问题，同时可以解决传统流体抛光无法抛光变口径细长管以及变粗糙度的问题。与传统的磁力研磨相比，采用磁流体的抛光液解决了磁性颗粒难以进入小口径细长管的问题的同时，由于本发明主要由流场裹挟的抛光磨粒进行抛光，整根细长管内表面均有不同程度材料去除，本发明的抛光效率也远高于传统的磁力研磨。
4、在本发明中，除磁性磨粒外，铁丝、磁针等导磁工具均可以作为流道阻塞。在外置磁铁的吸力作用，这些导磁工具紧密吸附在细长管内表面，不仅可以起到阻塞流场效果，还能增加沿细长管轴向的阻塞长度。
5、综上所述，本发明基于磁流变液体的流动性，可以实现对极细口径、极 大长径比的细长管进行加工，如长度>200mm、内径≤1mm的针管。
附图说明
图1为本发明装置的结构示意图。
图2为本发明的流体加工单元截面图(剖面线未示)。
图3为本发明的磁控流体单元示意图。
图4为图3的截面图。
图5为图4的局部放大图。
图中：1、活塞杆；2、活塞缸；3、活塞缸支架；4、活塞；5、旋转件；6、连接件；7、工件；8、导轨支架；9、导轨；10、磁轭；11、磁极；12、磁极尖；13、工作平台。
具体实施方式
为了使本领域技术人员更好地理解本发明的技术方案，下面结合附图对本发明进行详细描述，本部分的描述仅是示范性和解释性，不应对本发明的保护范围有任何的限制作用。
如图1-5所示，一种细长管内表面流体抛光装置，包括工作平台13、流体加工单元和磁控流体单元；所述的流体加工单元有两个，对称安装在工作平台13的左右两侧；细长管即工件7的左右两端分别与左右两侧的流体加工单元连接；
所述的磁控流体单元位于工件7的下侧，通过磁极11施加的磁场控制流体加工单元中抛光液内的磁性颗粒沿磁力方向形成具有一定屈服强度的磁链，吸附在工件7内表面形成局部阻塞块，减小抛光液在阻塞区域的实际流通口径；
所述的流体加工单元包括活塞4、活塞缸2、活塞杆1、旋转件5、连接件6和活塞缸支架3，所述的活塞缸2通过活塞缸支架3与工作平台13固定连接，所述的活塞杆1的内端与活塞4固定连接、活塞杆1与活塞缸2外端的开口滑动连接；所述活塞4与活塞缸2内表面滑动连接，且活塞4内侧与活塞缸2内 表面之间的腔体内灌注抛光液；所述的活塞缸2内端的出口与旋转件5的一端连接，所述的旋转件5另一端与连接件6连接，连接件6另一端通过内部卡扣卡紧工件7的一端；
所述的磁控流体单元包括磁铁、导轨9、导轨支架8和磁轭10。所述的导轨支架8位于工件7下方，与工件7平台固定连接；所述的导轨9安装在导轨支架8上，导轨9的轴向方向与工件7轴向方向相互平行；所述的磁轭10与导轨9滑动连接；所述的磁铁固定在磁轭10上；所述的磁铁与工件7之间的距离为1-3mm。
所述的旋转件5包括固定段和旋转段，所述的固定段和旋转段通过内部轴承连接，所述的固定段与活塞缸2连接、移动段通过连接件6与工件7连接。
进一步的，所述的导轨9有三条，等间距安装于与工作平台13平行的平面内。
进一步的，所述的磁铁有两块，两块磁铁结构相同、对称安装在工件7的前后两侧的磁轭10上，每块磁铁包括磁极11和磁极尖12，两块磁铁与磁轭10构成上开口的等腰三角形结构，磁极尖12与工件7之间的距离为1-3mm。
进一步的，所述的工件7的旋转速度为6-20转每分钟。
进一步的，所述磁铁沿导轨9移动，对工件7内表面轴线方向上各点进行磁控流场抛光。
进一步的，所述的抛光液内的抛光介质根据工件材料进行选择：工件材料为石英玻璃时选择氧化铈，工件材料为不锈钢时选择氧化铝，工件材料为铸铁时选择金刚石粉。
一种细长管内表面流体抛光方法，利用细长管内表面流体抛光装置进行抛光，包括如下步骤：
步骤一、根据工件7材料选取合适的抛光介质配制抛光液，将配置好的抛光液搅拌均匀后吸入活塞缸2内腔中。
步骤二、通过螺纹连接将活塞缸2出口与旋转件5以及连接件6连通，连 接件6通过其内部卡扣与工件7的两端连接，整体连接后检查密封性。
步骤三、将磁铁置于磁轭10上，使磁极尖12与工件7外壁的距离为1-3mm。
步骤四、通过外部传动装置转动旋转件5，控制工件7转速在6-20转每分钟。
步骤五、通过外部推杆推动左右两端活塞杆1同步运动，保证一侧活塞缸2推出抛光液的同时另一侧活塞缸2内吸入抛光液，抛光液在活塞杆1的推动作用下来回冲刷工件7内表面，从而对工件7内表面进行抛光加工。
步骤六、沿导轨9移动磁铁，吸附工件7内不同区域磁粉贴附管壁产生阻塞效果。
步骤七、加工结束，停止转动，取下工件7，放入超声波清洗机进行清洗。
步骤八、将加工后工件7进行检测，其内表面质量达到预期目标，抛光加工结束。
本发明的工作原理如下：
两个流体加工单元夹持工件7的两端，同时流体加工单元内含有抛光液，抛光液在一定的压力下以一定的速度流过工件7，通过抛光液中的磨粒对工件7内表面材料产生划擦、耕犁以及磨损作用，实现对工件7内表面的抛光。
磁控流体单元位于工件7的一侧，通过磁极11施加的磁场控制抛光液中的磁性颗粒沿磁力方向形成具有一定屈服强度的磁链，紧贴工件7内表面形成阻塞块，改变抛光液在该区域的实际流通口径，大幅提高抛光液在该处的流通速度，进而提高该区域的材料去除效率。
活塞缸2通过活塞缸支架3与工作平台13固定连接，用于确定活塞缸2位置并且提供支撑；工件7位于两个活塞缸2之间，保证活塞缸2内腔中的抛光液工作过程中可以呈直通型式经过工件7内表面；活塞4与活塞缸2内表面接触，且活塞4能够在活塞缸2内灵活移动，同时活塞4与活塞缸2内表面密封，保证抛光液能够在活塞4的作用下加压工作；活塞缸2出口与旋转件5连接，保证工件7旋转的情况下活塞缸2保持固定，便于活塞4工作；所述的旋转件5 另一端与连接件6相连，连接件6另一端夹紧工件7；所述的工件7两端分别连接一个连接件6，保证整个装置密封性以及对工件7进行夹持确定其位置。
导轨9通过导轨支架8悬空位于工件7下方，导轨9轴向方向与工件7轴向方向相互平行，用于确定磁铁移动方向以及移动范围；所述的磁轭10通过下方的孔槽与导轨9相接触，可以在导轨9上进行直线移动；所述的磁铁固定在磁轭10上，确保可以在工件7下方直线移动，进而控制磁场范围；磁铁需尽量靠近工件7，确保工件7中抛光液能够受到足够大的磁场力。
所述的工件7旋转运动通过转动旋转件5完成。所述的旋转件5分为两个部分，中间通过轴承连接，能够使其一段做旋转运动的同时另一段固定不动；所述的旋转件5一端连接活塞缸2保持固定不动，另一端通过连接件6与工件7相通，保证工件7可以和旋转件5一同转动。
磁铁可沿导轨9匀速运动，通过对工件7内表面轴线方向上各点进行磁控流场抛光，保证整个工件7内表面抛光的可控性以及均匀性。
本发明的一个实施例如下：
一种细长管内表面抛光方法，包括如下步骤：
步骤一、将抛光装置按流程顺序安装连接并检查装置气密性。
步骤二、工件7材料为不锈钢，内径Φ0.3mm，外径Φ0.6mm，内表面原始粗糙度为650μm。选取氧化铝为抛光介质，与水按3:7的质量比配制200mL抛光液，将配置好的抛光液用磁力搅拌器搅拌10分钟，将搅拌均匀的抛光液吸入两个流体加工单元中的活塞缸2内腔中。
步骤三、将工件7经两个流体加工单元夹持固定在两者中间，工件7两端均通过连接件6、旋转件5与活塞缸2的内腔连通，使得抛光液畅通进入工件7内部进行加工。
步骤四、依次推拉左右两侧的活塞杆1，让抛光液在左右活塞缸2内腔和工件7内部快速运动，使抛光液流速达到35mL/s，连续冲刷1000次；同时转动旋转件5使得工件7以10转每分钟的速度缓慢转动。
步骤五、加工结束，停止推动活塞杆1，取下不锈钢工件7，放入超声波清洗机进行清洗，并用气枪对其内表面进行干燥，去除其内残留的抛光液。
步骤六、对加工后工件7进行斜切，对截面处内表面进行表面质量检测，总体粗糙度Ra 46nm左右，局部粗糙度最优达到Ra 32nm。
本发明的前后左右仅相对于图1，不构成对本发明的任何限制。
以上所述仅是本发明的优选实施方式，应当指出，由于文字表达的有限性，而客观上存在无限的具体结构，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进、润饰或变化，也可以将上述技术特征以适当的方式进行组合；这些改进润饰、变化或组合，或未经改进将申请的构思和技术方案直接应用于其它场合的，均应视为本发明的保护范围。

Claims (7)

  1. 一种细长管内表面流体抛光装置，其特征在于：包括工作平台(13)、流体加工单元和磁控流体单元；所述的流体加工单元有两个，对称安装在工作平台(13)的左右两侧；细长管即工件(7)的左右两端分别与左右两侧的流体加工单元连接；
    所述的磁控流体单元位于工件(7)的下侧，通过磁极(11)施加的磁场控制流体加工单元中抛光液内的磁性颗粒沿磁力方向形成具有一定屈服强度的磁链，吸附在工件(7)内表面形成局部阻塞块，减小抛光液在阻塞区域的实际流通口径；
    所述的流体加工单元包括活塞(4)、活塞缸(2)、活塞杆(1)、旋转件(5)、连接件(6)和活塞缸支架(3)，所述的活塞缸(2)通过活塞缸支架(3)与工作平台(13)固定连接，所述的活塞杆(1)的内端与活塞(4)固定连接、活塞杆(1)与活塞缸(2)外端的开口滑动连接；所述活塞(4)与活塞缸(2)内表面滑动连接，且活塞(4)内侧与活塞缸(2)内表面之间的腔体内灌注抛光液；所述的活塞缸(2)内端的出口与旋转件(5)的一端连接，所述的旋转件(5)另一端与连接件(6)连接，连接件(6)另一端通过内部卡扣卡紧工件(7)的一端；
    所述的磁控流体单元包括磁铁、导轨(9)、导轨支架(8)和磁轭(10)；所述的导轨支架(8)位于工件(7)下方，与工件(7)平台固定连接；所述的导轨(9)安装在导轨支架(8)上，导轨(9)的轴向方向与工件(7)轴向方向相互平行；所述的磁轭(10)与导轨(9)滑动连接；所述的磁铁固定在磁轭(10)上；所述的磁铁与工件(7)之间的距离为1-3mm；
    所述的旋转件(5)包括固定段和旋转段，所述的固定段和旋转段通过内部轴承连接，所述的固定段与活塞缸(2)连接、移动段通过连接件(6)与工件(7)连接。
  2. 根据权利要求1所述的一种细长管内表面流体抛光装置，其特征在于：所述的导轨(9)有三条，等间距安装于与工作平台(13)平行的平面内。
  3. 根据权利要求1所述的一种细长管内表面流体抛光装置，其特征在于：所述的磁铁有两块，两块磁铁结构相同、对称安装在工件(7)的前后两侧的磁轭(10)上，每块磁铁包括磁极(11)和磁极尖(12)，两块磁铁与磁轭(10)构成上开口的等腰三角形结构，磁极尖(12)与工件(7)之间的距离为1-3mm。
  4. 根据权利要求1所述的一种细长管内表面流体抛光装置，其特征在于：所述的工件(7)的旋转速度为6-20转每分钟。
  5. 根据权利要求1所述的一种细长管内表面流体抛光装置，其特征在于：所述磁铁沿导轨(9)移动，对工件(7)内表面轴线方向上各点进行磁控流场抛光。
  6. 根据权利要求1所述的一种细长管内表面流体抛光装置，其特征在于：所述的抛光液内的抛光介质根据工件材料进行选择：工件材料为石英玻璃时选择氧化铈，工件材料为不锈钢时选择氧化铝，工件材料为铸铁时选择金刚石粉。
  7. 一种细长管内表面流体抛光方法，利用如权利要求1所述的细长管内表面流体抛光装置进行抛光，其特征在于：包括如下步骤：
    步骤一、根据工件(7)材料选取合适的抛光介质配制抛光液，将配置好的抛光液搅拌均匀后吸入活塞缸(2)内腔中；
    步骤二、通过螺纹连接将活塞缸(2)出口与旋转件(5)以及连接件(6)连通，连接件(6)通过其内部卡扣与工件(7)的两端连接，整体连接后检查密封性；
    步骤三、将磁铁置于磁轭(10)上，使磁极尖(12)与工件(7)外壁的距离为1-3mm；
    步骤四、通过外部传动装置转动旋转件(5)，控制工件(7)转速在6-20转每分钟；
    步骤五、通过外部推杆推动左右两端活塞杆(1)同步运动，保证一侧活塞缸(2)推出抛光液的同时另一侧活塞缸(2)内吸入抛光液，抛光液在活塞杆(1)的推动作用下来回冲刷工件(7)内表面，从而对工件(7)内表面进行抛 光加工；
    步骤六、沿导轨(9)移动磁铁，吸附工件(7)内不同区域磁粉贴附管壁产生阻塞效果；
    步骤七、加工结束，停止转动，取下工件(7)，放入超声波清洗机进行清洗；
    步骤八、将加工后工件(7)进行检测，其内表面质量达到预期目标，抛光加工结束。
PCT/CN2024/105108 2023-07-14 2024-07-12 一种细长管内表面流体抛光装置与方法 Pending WO2025016296A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310867341.8A CN116967850B (zh) 2023-07-14 2023-07-14 一种细长管内表面流体抛光装置与方法
CN202310867341.8 2023-07-14

Publications (1)

Publication Number Publication Date
WO2025016296A1 true WO2025016296A1 (zh) 2025-01-23

Family

ID=88474278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/105108 Pending WO2025016296A1 (zh) 2023-07-14 2024-07-12 一种细长管内表面流体抛光装置与方法

Country Status (2)

Country Link
CN (1) CN116967850B (zh)
WO (1) WO2025016296A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120791568A (zh) * 2025-09-08 2025-10-17 南通德科机械设备制造有限公司 一种液压油缸端部加工装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116967850B (zh) * 2023-07-14 2026-03-03 大连理工大学 一种细长管内表面流体抛光装置与方法
CN117600920B (zh) * 2023-11-28 2026-03-03 江苏大学 一种等截面非圆柱形直型小孔内表面强化装置及加工方法
CN118024031A (zh) * 2024-03-28 2024-05-14 哈尔滨工业大学 用于细小管可变径大长径比内孔的磁流变抛光装置与方法
CN118081579B (zh) * 2024-04-19 2024-06-25 山东鹏瑞凿岩科技有限公司 一种中空钢内孔的处理装置及方法
CN118544186B (zh) * 2024-06-21 2025-03-18 深圳市嘉业精密科技有限公司 一种管道内表面的磁力辅助旋转流体抛光方法与装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105881185A (zh) * 2016-04-08 2016-08-24 广东工业大学 一种自增压高速磨粒磁流孔内表面抛光方法及装置
CN205817470U (zh) * 2016-04-08 2016-12-21 广东工业大学 一种自增压高速磨粒磁流螺旋孔内表面抛光装置
CN106938410A (zh) * 2017-04-17 2017-07-11 辽宁科技大学 大长径比细长管内表面的抛光装置及其方法
CN110202420A (zh) * 2019-06-19 2019-09-06 华中科技大学 一种基于电励旋转磁场的磁流变抛光装置及方法
CN114888647A (zh) * 2022-06-20 2022-08-12 山东理工大学 一种电磁线圈和永磁铁耦合控制的圆管内表面抛光装置及方法
CN116967850A (zh) * 2023-07-14 2023-10-31 大连理工大学 一种细长管内表面流体抛光装置与方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005005099A1 (ja) * 2003-07-15 2005-01-20 Hoya Corporation 磁気ディスク用基板の製造方法、磁気ディスク用基板の製造装置及び磁気ディスクの製造方法
DE102009035241B4 (de) * 2008-08-07 2014-06-12 Tmt Tapping-Measuring-Technology Gmbh Verfahren und Vorrichtungen zur Regelung der Strömungsgeschwindigkeit und zum Abbremsen von nichtferromagnetischen, elektrisch leitfähigen Flüssigkeiten und Schmelzen
CN102211295B (zh) * 2011-05-20 2013-04-24 公安部第一研究所 毛细管内壁的磁流变抛光装置与方法
EA201600243A1 (ru) * 2013-09-13 2016-10-31 БАЙОФИЛМ АйПи, ЛЛЦ Магнитокриогенные затворы, системы и способы модулирования потока в канале
CN110576340A (zh) * 2018-06-07 2019-12-17 中国航发商用航空发动机有限责任公司 增材制造管件内壁表面处理装置
CN113561047A (zh) * 2021-09-23 2021-10-29 长沙理工大学 一种孔内表面复合抛光方法及装置
CN115157020B (zh) * 2022-06-29 2023-05-12 大连理工大学 一种多场辅助磨料冲刷抛光方法与装置
CN115673997A (zh) * 2022-11-15 2023-02-03 大连理工大学 一种细长管内表面磨料冲刷抛光工艺与装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105881185A (zh) * 2016-04-08 2016-08-24 广东工业大学 一种自增压高速磨粒磁流孔内表面抛光方法及装置
CN205817470U (zh) * 2016-04-08 2016-12-21 广东工业大学 一种自增压高速磨粒磁流螺旋孔内表面抛光装置
CN106938410A (zh) * 2017-04-17 2017-07-11 辽宁科技大学 大长径比细长管内表面的抛光装置及其方法
CN110202420A (zh) * 2019-06-19 2019-09-06 华中科技大学 一种基于电励旋转磁场的磁流变抛光装置及方法
CN114888647A (zh) * 2022-06-20 2022-08-12 山东理工大学 一种电磁线圈和永磁铁耦合控制的圆管内表面抛光装置及方法
CN116967850A (zh) * 2023-07-14 2023-10-31 大连理工大学 一种细长管内表面流体抛光装置与方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120791568A (zh) * 2025-09-08 2025-10-17 南通德科机械设备制造有限公司 一种液压油缸端部加工装置

Also Published As

Publication number Publication date
CN116967850B (zh) 2026-03-03
CN116967850A (zh) 2023-10-31

Similar Documents

Publication Publication Date Title
WO2025016296A1 (zh) 一种细长管内表面流体抛光装置与方法
CN105881185B (zh) 一种自增压高速磨粒磁流孔内表面抛光方法及装置
CN205817470U (zh) 一种自增压高速磨粒磁流螺旋孔内表面抛光装置
CN107791107B (zh) 一种钛合金管内壁磁流变抛光方法及装置
CN106938410A (zh) 大长径比细长管内表面的抛光装置及其方法
CN114589636B (zh) 基于磁导向气动往复射流3d复杂零件内流道清理装置及方法
CN110000622B (zh) 一种化学磁粒复合研磨管内表面的装置及方法
CN109866085B (zh) 一种复合研磨精密管设备及抛光工艺
CN109848833B (zh) 一种电磁-蠕动复合研磨抛光长直管内表面的方法及装置
CN110000624B (zh) 一种磁流变抛光设备
Karakurt et al. Development of a magnetically driven abrasive polishing process for additively manufactured copper structures
CN115673997A (zh) 一种细长管内表面磨料冲刷抛光工艺与装置
US20250128379A1 (en) Multi-fields assisted abrasive scouring polishing method and device
CN101323098A (zh) 用于高陡度光学零件的磁流变抛光装置
CN113561047A (zh) 一种孔内表面复合抛光方法及装置
CN102211295B (zh) 毛细管内壁的磁流变抛光装置与方法
CN115488751B (zh) 抛光装置及抛光方法
Guo et al. A new magnetic enhanced chemical mechanical polishing method for quartz glass slender holes
CN118544186B (zh) 一种管道内表面的磁力辅助旋转流体抛光方法与装置
CN118024031A (zh) 用于细小管可变径大长径比内孔的磁流变抛光装置与方法
CN210909242U (zh) 一种电解磁力复合抛光孔的装置
CN118668281A (zh) 柔性螺旋电极及电化学抛光复杂内通道方法
CN116713889A (zh) 一种细长管内壁空化抛光装置与方法
CN104454746B (zh) 马达冲洗阀块及其加工方法
CN119772757B (zh) 一种细长直管内孔抛光装置与方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24842289

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE