CN211439493U - Liquid metal magnetic polishing device for blind hole polishing - Google Patents
Liquid metal magnetic polishing device for blind hole polishing Download PDFInfo
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- CN211439493U CN211439493U CN201921737892.8U CN201921737892U CN211439493U CN 211439493 U CN211439493 U CN 211439493U CN 201921737892 U CN201921737892 U CN 201921737892U CN 211439493 U CN211439493 U CN 211439493U
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Abstract
The utility model discloses a liquid metal magnetic polishing device for blind hole polishing, which comprises a workbench, a mobile positioning device, a runner device and a rotating magnetic field device, wherein the mobile positioning device is arranged on the workbench; the utility model can polish the blind holes of blind hole workpieces, and the blind holes of the workpieces to be polished are in a negative pressure state by pumping air, so that abrasive flow can enter the blind holes more smoothly; the abrasive flow used by the utility model is the liquid metal abrasive flow, and under the action of the alternating magnetic field, the metal particles in the liquid metal abrasive flow can form good contact with the surface of the workpiece to be processed, so as to carry out micro-cutting, and the blind hole surface of the workpiece to be processed can not generate mechanical deformation; the polishing efficiency is faster, the effect is better, micro-cutting is carried out, and the mechanical deformation of the surface of a workpiece can not be caused.
Description
Technical Field
The utility model relates to a liquid metal polishing field, more specifically the theory that says so especially relates to a liquid metal magnetic force burnishing device is used in blind hole polishing.
Background
The 3D printing technology is also called additive manufacturing technology, i.e. an advanced manufacturing technology called rapid prototyping in China, and its essential principle is discretization and stacking, i.e. with the aid of a computer, the manufacturing of a three-dimensional entity is converted into a stack of two-dimensional layers and a continuous superposition along the prototyping direction by slicing the entity model, and finally the manufacturing of the three-dimensional entity is achieved. With the use of 3D printing technology becoming more and more widespread, blind hole products generated by the 3D printing technology are more and more. The blind hole is a blind hole relative to the through hole, and is widely applied to life and industrial production, and meanwhile, the high-precision blind hole has more and more extensive application, such as the blind hole of a pressure sensor shell; key parts in the vehicle engine, such as a plunger, an electromagnetic valve seat, a middle body of an oil sprayer, a blind hole of a pump body and the like, are used for realizing the high-efficiency operation of the engine; a blind hole in a prosthetic heart valve holder for medical applications.
Although 3D printing technology is better and finer at present, the surface of a 3D printed model is still rough. In order to solve the problem of rough surface, the traditional post-treatment method adopts methods such as mechanical grinding and surface sand blasting, but the traditional methods are easy to damage the shape required by the part, dust generated in the polishing process influences the environment and processing workers, and the traditional polishing method cannot polish the blind hole type workpiece with small aperture printed by 3D, especially the blind hole of the blind hole type workpiece.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the blind hole that current polishing method can't print out to 3D printing technique carries out the polishing, a liquid metal magnetic force burnishing device is used in blind hole polishing has been proposed, the automation polishing of the blind hole of waiting to process the work piece is realized to the motion that electromagnetic field control liquid metal abrasive particle flows under the negative pressure polished ring border, the blind hole of waiting to process the work piece is in negative pressure state through bleeding the messenger, make liquid metal abrasive particle flow can be more smooth get into the blind hole in, in the polishing process, the electromagnetic field constantly acts on liquid metal abrasive particle flow, liquid metal abrasive particle flow under the effect of electromagnetic field with wait to process work piece surface and form good contact, the blind hole of treating to process the work piece carries out trace cutting polishing, the blind hole polishing of waiting to process the work piece is realized.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a liquid metal magnetic polishing device for blind hole polishing comprises a workbench, a movable positioning device, a runner device and a rotating magnetic field device, wherein the movable positioning device is arranged on the workbench;
the mobile positioning device comprises a horizontal module mounting frame, a horizontal linear module, a horizontal module driving motor, a vertical linear module and a vertical module driving motor, wherein the horizontal module mounting frame is fixed on the workbench; the horizontal linear module is horizontally fixed on the horizontal module mounting frame, the horizontal module driving motor is fixed at one end of the horizontal linear module, and a driving shaft of the horizontal module driving motor is connected with the horizontal linear module and drives a horizontal sliding block on the horizontal linear module to do linear motion along the horizontal direction; the vertical linear module is vertically fixed on a horizontal sliding block of the horizontal linear module, the vertical module driving motor is fixed at the upper end of the vertical linear module, and a driving shaft of the vertical module driving motor is connected with the vertical linear module and drives the vertical sliding block on the vertical linear module to do linear motion along the vertical direction; the runner device is arranged on a vertical sliding block of the vertical linear module, and the rotating magnetic field device is arranged on a workbench beside the horizontal module mounting rack; the rotating magnetic field device and the flow channel device are arranged on the same side of the vertical sliding block;
the runner device comprises a supporting block, an auxiliary clamping head, a three-phase stator coil and a stator coil fixing seat, wherein the supporting block is fixed on the workbench and is provided with an inclined surface inclining upwards; the mounting inclined plane is provided with a circular groove for mounting the stator coil fixing seat and the auxiliary clamping head; the stator coil fixing seat is embedded in the circular groove of the installation inclined plane, a circular groove hole for installing the auxiliary clamping head is formed in the stator coil fixing seat, the bottom of the auxiliary clamping head is embedded in the circular groove hole of the stator coil fixing seat, the bottom of the auxiliary clamping head is attached to the bottom of the circular groove, and the bottom of the auxiliary clamping head is fixed on the circular groove on the installation inclined plane through a bolt; the three-phase stator coil is fixed on the stator coil fixing seat and is arranged around the whole auxiliary clamping head; the input end of the three-phase stator coil is connected with an external sine alternating current power supply;
the runner device comprises a main clamping head, a hollow runner fixing seat, a runner fixing plate, a sliding rail connecting plate, an air exhaust port one-way valve, a gas-liquid abrasive flow joint, an abrasive flow inlet valve, a runner joint, a hollow runner, a flange plate and a main clamping end O-shaped ring, wherein the sliding rail connecting plate is vertically installed on a vertical sliding block of a vertical linear module, the runner fixing plate is fixedly installed on the sliding rail connecting plate, the hollow runner fixing seat is fixedly installed on the runner fixing plate, the hollow runner is installed on the hollow runner fixing seat, the flange plate is sleeved at one end of the hollow runner, the main clamping head is installed on the flange plate, the main clamping head is over against an installation inclined surface of the runner device, the axial lead of the main clamping head is perpendicular to the installation inclined surface, and the axial lead of the hollow runner is parallel to the axial leads of the auxiliary; two ends of a workpiece to be processed are clamped by the main clamping head and the auxiliary clamping head respectively, and the blind hole of the workpiece to be processed is positioned at one end of the main clamping head; the other end of the hollow flow passage is connected with a gas-liquid abrasive particle flow connector through a flow passage connector, the gas-liquid abrasive particle flow connector is provided with three inlets and outlets which are respectively an abrasive particle flow inlet end, an abrasive particle flow outlet end and an air exhaust end, the abrasive particle flow inlet end, the abrasive particle flow outlet end and the air exhaust end are communicated with each other, an abrasive particle flow outlet end of the gas-liquid abrasive particle flow connector is connected with the flow passage connector, an abrasive particle flow inlet end of the gas-liquid abrasive particle flow connector is connected with an external liquid metal abrasive particle flow generating device through an abrasive particle flow inlet valve and an abrasive particle flow pipe, the abrasive particle flow generated by the liquid metal abrasive particle flow generating device is a liquid metal abrasive particle flow, the air exhaust end of the gas-liquid abrasive particle flow connector is connected with the external air exhaust device through an air exhaust port one-way valve and an air, The heights of the flow channel joint, the hollow flow channel and the main clamping head are reduced in sequence.
Furthermore, the main clamping head comprises a flange-shaped fixed flange end and a main mounting end for fixing a workpiece to be processed, the fixed flange end of the main clamping head is fixedly connected with the flange plate, a workpiece mounting main groove matched with the shape of the processing end of the workpiece to be processed is arranged on the main mounting end of the main clamping head, the processing end of the workpiece to be processed is mounted in the workpiece mounting main groove, the workpiece mounting main groove of the main clamping head is provided with a main clamping end O-shaped ring for preventing the processing end of the workpiece to be processed from sliding, the inner ring of the main clamping end O-shaped ring is attached to and sleeved at the processing end of the workpiece to be processed, and the outer ring of the main clamping end O-shaped ring is attached to the inner wall of the workpiece mounting main groove; the auxiliary clamping head comprises a cylindrical fixed end and an auxiliary mounting end used for fixing a workpiece to be machined, the fixed end of the auxiliary clamping head is fixed in a circular groove of the supporting block, a workpiece mounting auxiliary groove matched with the shape of the rear end of the workpiece to be machined is formed in the auxiliary mounting end of the auxiliary clamping head, the rear end of the workpiece to be machined is mounted in the workpiece mounting auxiliary groove, an auxiliary clamping end O-shaped ring used for preventing the workpiece to be machined from sliding is arranged at the bottom of the workpiece mounting auxiliary groove of the auxiliary clamping head, the inner ring of the auxiliary clamping end O-shaped ring is attached to and sleeved at the rear end of the workpiece to be machined, and the outer ring of the auxiliary clamping end O-shaped ring is attached to the inner wall of the workpiece mounting auxiliary groove.
Further, the horizontal straight line module passes through the bolt fastening on horizontal module mounting bracket, and horizontal module mounting bracket passes through the bolt fastening on the workstation, and vertical straight line module passes through the bolt fastening on the horizontal slider of horizontal straight line module. One end of the horizontal linear module is provided with four bolt holes, the horizontal module driving motor is provided with four bolt holes matched with the bolt holes in the horizontal linear module, and the horizontal linear module driving motor is fixed through four fixing bolts penetrating through the bolt holes.
Furthermore, the gas-liquid abrasive particle flow joint is a square joint and is fixed on the slide rail connecting plate.
Further, the hollow runner fixing seat comprises a runner fixing base and a runner fixing upper seat, arc-shaped grooves matched with the hollow runner are formed in the runner fixing base and the runner fixing upper seat, the runner fixing base and the runner fixing upper seat clamp the hollow runner together, and the runner fixing base and the runner fixing upper seat are fixedly connected through bolts.
Furthermore, the axial lead of the hollow flow channel and the axial lead of the fixed end of the auxiliary clamping head are inclined at an angle of 30-60 degrees with the horizontal plane, and the axial lead of the hollow flow channel and the axial lead of the fixed end of the auxiliary clamping head are perpendicular to the installation inclined plane of the supporting block.
Furthermore, the supporting block is a right-angle triangular prism-shaped supporting block, two right-angle surfaces and an installation inclined surface are arranged on the supporting block, the right-angle surfaces of the supporting block are fixedly installed on the workbench, and the auxiliary clamping head is installed on the installation inclined surface of the supporting block through the turntable base.
Furthermore, the air extracting device is an air extracting pump, and the hollow flow passage is a hollow shaft.
Furthermore, the horizontal linear module and the vertical linear module are screw modules which are composed of a base, a linear guide rail, a ball screw, a screw nut, a sliding block and a bearing seat.
A liquid metal magnetic polishing method for blind hole polishing based on a liquid metal magnetic polishing device for blind hole polishing specifically comprises the following steps:
the method comprises the following steps: the bottom end of a workpiece to be processed is arranged on the auxiliary clamping head through an auxiliary clamping end O-shaped ring;
step two: starting a vertical module driving motor, and driving a main clamping head to move downwards by driving a vertical sliding block on a vertical linear module to move downwards in a linear manner, so that the main clamping head is close to a workpiece to be processed on an auxiliary clamping head;
step three: starting a horizontal module driving motor, driving a main clamping head to move towards a workpiece to be processed in the horizontal direction by driving a horizontal sliding block on a horizontal linear module to horizontally move, and stopping the horizontal module driving motor when reaching a proper position;
step four: repeating the second step and the third step to enable the workpiece to be machined and the main clamping head to gradually approach until the machining end of the workpiece to be machined completely extends into the main clamping head, an O-shaped ring of the main clamping end in the main clamping head is completely sleeved on the machining end of the workpiece to be machined, the workpiece to be machined is clamped by the main clamping head and the auxiliary clamping head together, and the blind hole of the workpiece to be machined is communicated with the hollow flow channel;
step five: closing the abrasive flow inlet valve, opening the one-way valve of the air exhaust opening, starting the air exhaust device, and connecting the one-way valve of the air exhaust opening with the air exhaust device through an air exhaust pipeline to exhaust air so that the blind hole of the workpiece to be processed and the interior of the hollow flow passage are in a negative pressure state;
step six: the method comprises the steps that after the interior of a blind hole of a workpiece to be processed is in a negative pressure state, an air exhaust device is closed, and only one-way gas flow is allowed by an air exhaust port check valve, so that the interior of the blind hole of the workpiece to be processed is always kept in a negative pressure state, at the moment, an abrasive flow inlet valve is opened, and a liquid metal abrasive flow generating device is started, so that liquid metal abrasive flow generated in the liquid metal abrasive flow generating device flows through the abrasive flow inlet valve, a gas-liquid abrasive flow joint and a flow channel joint and enters a hollow flow channel;
step seven: the abrasive particle flow inlet valve is closed after the liquid metal abrasive particle flow is injected, the sine alternating current power supply connected with the three-phase stator coil is turned on, the three-phase stator coil can generate a rotating magnetic field under the alternating current field, the rotating magnetic field generated by the three-phase stator coil during working drives metal particles in the liquid metal polishing solution to move, abrasive particles in the liquid metal polishing solution rotate to impact blind holes of workpieces to be processed, and therefore blind hole polishing of the workpieces to be processed is achieved until the blind holes of the workpieces to be processed are polished.
Furthermore, in the seventh step, the rotating speed and the intensity of the rotating magnetic field generated by the three-phase stator coil are controlled by adjusting the frequency and the voltage of the externally connected sinusoidal alternating-current power supply, so that the change of the motion condition of metal particles in the liquid metal polishing solution is realized, and the change of the polishing efficiency is further realized.
The beneficial effects of the utility model reside in that:
1. the utility model discloses can polish the blind hole of blind hole class work piece, make the blind hole of treating the polishing work piece be in the negative pressure state through bleeding for the abrasive flow can be more smooth get into in the blind hole.
2. The abrasive particle flow used by the utility model is liquid metal abrasive particle flow, and under the action of the rotating magnetic field generated by the three-phase stator coil, metal particles in the liquid metal abrasive particle flow can form good contact with the surface of the workpiece to be processed, so that micro-cutting can be carried out, and the blind hole surface of the workpiece to be processed can not generate mechanical deformation; the polishing efficiency is faster, the effect is better, micro-cutting is carried out, and the mechanical deformation of the surface of a workpiece can not be caused.
3. The utility model discloses will wait to process work piece drill way slope up for the grit stream at polishing process gathers in the blind hole, the liquid metal grit stream of adoption produces the torrent flow under rotating magnetic field, compare with traditional medium water and oil, liquid metal has the characteristics such as density is big and the mobility controllability is good, and, liquid metal's mobility is closely relevant rather than electric field and magnetic field on every side, can carry out different treatment to conductor and non-conductor type's work piece through the mobile state that changes magnetic field control liquid metal, and the range of application is wide.
4. The utility model adopts the liquid metal abrasive flow to process, the melting point of the liquid metal abrasive flow is lower and can be controlled between 8 ℃ and 29 ℃, meanwhile, the boiling point of the liquid metal abrasive flow is higher than 2000 ℃, the gasification can be avoided, the fluid management is convenient, and the liquid metal abrasive flow is nonflammable and nontoxic, and the safety ratio is higher; meanwhile, the liquid metal abrasive flow can be separated by an electromagnetic purification technology after being used, so that the later recovery of the liquid metal abrasive flow is realized, and the energy is saved.
5. The utility model discloses less abrasive particle that only needs flows at the polishing in-process, and the abrasive particle flows nontoxic, the security is higher and little to the pollution, and the environment is friendly.
6. The utility model discloses the mobile location module who utilizes horizontal sharp module and vertical sharp module to constitute carries out mobile location, can be too fast accurate positioning in the space really now.
7. The utility model discloses to wait to process the work piece slope and place on the supporting shoe of right angle triangular prism form, the blind hole of waiting to process the work piece has certain angle of inclination for the better unordered motion after the abrasive particle stream enters the blind hole during the polishing, make polishing effect better.
Drawings
FIG. 1 is a schematic view of the overall structure of the liquid metal magnetic polishing device for blind hole polishing of the present invention.
Fig. 2 is a schematic structural diagram of the mobile positioning apparatus of the present invention.
Fig. 3 is a schematic structural diagram of the flow channel device of the present invention.
Fig. 4 is a sectional view of the runner section of the runner device of the present invention.
Fig. 5 is a schematic view of the entire mechanism of the rotating magnetic field device of the present invention.
Fig. 6 is a schematic view of the surface connection of the supporting block of the rotating magnetic field device of the present invention.
Fig. 7 is a sectional view of the rotating magnetic field device of the present invention.
In the figure, 1-a mobile positioning assembly, 2-a flow channel assembly, 3-a rotating magnetic field assembly, 4-a workpiece to be polished, 5-a workbench, 101-a horizontal module mounting rack, 102-a horizontal linear module, 103-a horizontal linear module sliding block, 104-a vertical linear module sliding block, 105-a vertical module driving motor, 106-a vertical linear module, 107-a horizontal module driving motor, 201-a main clamping head, 202-a hollow flow channel, 203-a flow channel fixing plate, 204-a hollow flow channel fixing seat, 205-a slide rail fixing plate, 206-a flow channel joint, 207-an abrasive flow inlet valve, 208-a gas and abrasive flow joint, 209-an air suction opening one-way valve, 210-a flange plate, 211-a main clamping head O-shaped ring, 301-a wedge-shaped supporting block, a rotating magnetic field assembly, 302-three-phase stator coil, 303-auxiliary clamping head, 304-auxiliary clamping head O-shaped ring, 305-stator coil fixing seat and 306-circular groove.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 to 7, a liquid metal magnetic polishing device for blind hole polishing comprises a workbench 5, a mobile positioning device 1, a flow channel device 2 and a rotating magnetic field device 3, wherein the mobile positioning device 1 is installed on the workbench 5, the flow channel device 2 is installed on the mobile positioning device 1, and the rotating magnetic field device 3 is fixed on the workbench 5 obliquely below the flow channel device 2.
The mobile positioning device 1 comprises a horizontal module mounting frame 101, a horizontal linear module 102, a horizontal module driving motor 107, a vertical linear module 106 and a vertical module driving motor 105, wherein the horizontal module mounting frame 101 is fixed on the workbench 5; the horizontal linear module 102 is horizontally fixed on the horizontal module mounting frame 101, the horizontal module driving motor 107 is fixed at one end of the horizontal linear module 102, and a driving shaft of the horizontal module driving motor 107 is connected with the horizontal linear module 102 and drives the horizontal slider 103 on the horizontal linear module 102 to do linear motion along the horizontal direction; the vertical linear module 106 is vertically fixed on the horizontal sliding block 103 of the horizontal linear module 102, the vertical module driving motor 105 is fixed at the upper end of the vertical linear module 106, and a driving shaft of the vertical module driving motor 105 is connected with the vertical linear module 106 and drives the vertical sliding block 104 on the vertical linear module 106 to do linear motion along the vertical direction; the runner device 2 is arranged on a vertical sliding block 104 of a vertical linear module 106, and the rotating magnetic field device 3 is arranged on a workbench 5 beside the horizontal module mounting rack 101; the rotating magnetic field device 3 and the flow channel device 2 are arranged on the same side of the vertical slide 104.
The runner device 2 comprises a supporting block 301, an auxiliary main clamping head 303, a three-phase stator coil 302 and a stator coil fixing seat 305, wherein the supporting block 301 is fixed on the workbench 5, and an upward inclined installation inclined surface is arranged on the supporting block 301; a circular groove 306 for mounting the stator coil fixing seat 305 and the auxiliary main clamping head 303 is formed in the mounting inclined surface; the stator coil fixing seat 305 is embedded in the circular groove 306 of the installation inclined plane, a circular groove hole for installing the auxiliary main clamping head 303 fixing seat is formed in the stator coil fixing seat 305, the bottom of the auxiliary main clamping head 303 is embedded in the circular groove hole of the stator coil fixing seat 305, the bottom of the auxiliary main clamping head 303 is attached to the bottom of the circular groove 306, and the bottom of the auxiliary main clamping head 303 is fixed on the circular groove 306 of the installation inclined plane through a bolt; the three-phase stator coil 302 is fixed on the stator coil fixing seat 305, and the three-phase stator coil 302 is arranged around the whole auxiliary main clamping head 303; the input end of the three-phase stator coil 302 is connected with an external sine alternating current power supply.
The flow channel device 2 comprises a main clamping head 201, a hollow flow channel fixing seat 204, a flow channel fixing plate 203, a sliding rail connecting plate 205, an air suction opening one-way valve 209, a gas-liquid abrasive flow joint 208, an abrasive flow inlet valve 207, a flow channel joint 206, a hollow flow channel 202, a flange 210 and a main clamping end O-shaped ring 211, the slide rail connecting plate 205 is vertically installed on the vertical slide block 104 of the vertical linear module 106, the flow channel fixing plate 203 is fixedly installed on the slide rail connecting plate 205, the hollow runner fixing seat 204 is fixedly arranged on the runner fixing plate 203, the hollow runner 202 is arranged on the hollow runner fixing seat 204, one end of the hollow runner 202 is sleeved with a flange 210, a main clamping head 201 is arranged on the flange 210, the main clamping head 201 is over against the installation inclined plane of the runner device 2, the axial lead of the main clamping head 201 is vertical to the installation inclined plane, when the hollow flow passage 202 is installed, the axial line of the hollow flow passage 202 is parallel to the axial lines of the auxiliary main clamping head 303 and the main clamping head 201; two ends of a workpiece 4 to be processed are clamped by the main clamping head 201 and the auxiliary main clamping head 303 respectively, and a blind hole of the workpiece 4 to be processed is positioned at one end of the main clamping head 201; the other end of the hollow flow channel 202 is connected with a gas-liquid abrasive flow joint 208 through a flow channel joint 206, the gas-liquid abrasive flow joint 208 is provided with three inlets and outlets which are respectively an abrasive flow inlet end, an abrasive flow outlet end and an air exhaust end, the abrasive flow inlet end, the abrasive flow outlet end and the air exhaust end are communicated with each other, the abrasive flow outlet end of the gas-liquid abrasive flow joint 208 is connected with the flow channel joint 206, the abrasive flow inlet end of the gas-liquid abrasive flow joint 208 is connected with an external liquid metal abrasive flow generating device through an abrasive flow inlet valve 207 and an abrasive flow pipeline, the abrasive flow generated by the liquid metal abrasive flow generating device is a liquid metal abrasive flow, the air exhaust end of the gas-liquid abrasive flow joint 208 is connected with the external air exhaust device through an air exhaust port one-way valve 209 and an air exhaust pipeline, and the gas-liquid abrasive flow joint 208, the flow channel joint, the heights of the gas-liquid abrasive flow joint 208, the flow passage joint 206, the hollow flow passage 202, and the main clamping head 201 are sequentially lowered.
The main clamping head 201 comprises a flange-shaped fixed flange end and a main mounting end used for fixing the workpiece 4 to be machined, the fixed flange end of the main clamping head 201 is fixedly connected with the flange plate 210, a workpiece mounting main groove matched with the shape of the machining end of the workpiece 4 to be machined is arranged on the main mounting end of the main clamping head 201, the machining end of the workpiece 4 to be machined is mounted in the workpiece mounting main groove, a main clamping end O-shaped ring 211 used for preventing the machining end of the workpiece 4 to be machined from sliding is arranged in the workpiece mounting main groove of the main clamping head 201, the inner ring of the main clamping end O-shaped ring 211 is attached to and sleeved on the machining end of the workpiece 4 to be machined, and the outer ring of the main clamping end O-shaped ring 211 is attached to the inner wall of the workpiece mounting main groove; the auxiliary main clamping head 303 comprises a cylindrical fixed end and an auxiliary mounting end used for fixing a workpiece 4 to be processed, the fixed end of the auxiliary main clamping head 303 is fixed in the circular groove 306 of the supporting block 301, a workpiece mounting auxiliary groove matched with the shape of the rear end of the workpiece 4 to be processed is arranged in the auxiliary mounting end of the auxiliary main clamping head 303, the rear end of the workpiece 4 to be processed is mounted in the workpiece mounting auxiliary groove, an auxiliary clamping end O-shaped ring 304 used for preventing the workpiece 4 to be processed from sliding is arranged at the bottom of the workpiece mounting auxiliary groove of the auxiliary main clamping head 303, the inner ring of the auxiliary clamping end O-shaped ring 304 is attached and sleeved at the rear end of the workpiece 4 to be processed, and the outer ring of the auxiliary clamping end O-shaped ring 304 is attached to the inner wall of the workpiece mounting auxiliary groove.
Horizontal straight line module 102 passes through the bolt fastening on horizontal module mounting bracket 101, and horizontal module mounting bracket 101 passes through the bolt fastening on workstation 5, and vertical straight line module 106 passes through the bolt fastening on horizontal slider 103 of horizontal straight line module 102.
The gas-liquid abrasive flow joint 208 is a square joint, and the gas-liquid abrasive flow joint 208 is fixed on the slide rail connecting plate 205.
The hollow runner fixing seat 204 comprises a runner fixing base and a runner fixing upper seat, arc-shaped grooves matched with the hollow runner 202 are formed in the runner fixing base and the runner fixing upper seat, the runner fixing base and the runner fixing upper seat clamp the hollow runner 202 together, and the runner fixing base and the runner fixing upper seat are fixedly connected through bolts.
The axial lead of the hollow flow channel 202 and the axial lead of the fixed end of the auxiliary main clamping head 303 are inclined at an angle of 30-60 degrees with the horizontal plane, and the axial lead of the hollow flow channel 202 and the axial lead of the fixed end of the auxiliary main clamping head 303 are perpendicular to the installation inclined plane of the supporting block 301.
The supporting block 301 is a supporting block 301 in a right-angle triangular prism shape, two right-angle surfaces and an installation inclined surface are arranged on the supporting block 301, the right-angle surfaces of the supporting block 301 are fixedly installed on the workbench 5, and the auxiliary main clamping head 303 is installed on the installation inclined surface of the supporting block 301 through a turntable base.
The air extracting device is an air extracting pump, and the hollow flow passage 202 is a hollow shaft.
A liquid metal magnetic polishing device for blind hole polishing based on a liquid metal magnetic polishing device for blind hole polishing comprises the following steps:
the method comprises the following steps: the bottom end of a workpiece 4 to be processed is arranged on the auxiliary main clamping head 303 through an auxiliary clamping end O-shaped ring 304;
step two: starting a vertical module driving motor 105, driving a vertical slider 104 on a vertical linear module 106 to move linearly downwards, and driving a main clamping head 201 to move downwards, so that the main clamping head 201 is close to a workpiece 4 to be processed on an auxiliary main clamping head 303;
step three: starting a horizontal module driving motor 107, driving a main clamping head 201 to move towards the direction of the workpiece 4 to be processed in the horizontal direction by driving a horizontal sliding block 103 on a horizontal linear module 102 to move horizontally, and stopping the horizontal module driving motor 107 when reaching a proper position;
step four: repeating the second step and the third step to enable the workpiece 4 to be machined to gradually approach the main clamping head 201 until the machining end of the workpiece 4 to be machined completely extends into the main clamping head 201, an O-shaped ring 211 of the main clamping end in the main clamping head 201 is completely sleeved on the machining end of the workpiece 4 to be machined, at the moment, the workpiece 4 to be machined is clamped by the main clamping head 201 and the auxiliary main clamping head 303 together, and the blind hole of the workpiece 4 to be machined is communicated with the hollow flow channel 202;
step five: closing the abrasive flow inlet valve 207, opening the air suction port one-way valve 209, starting an air suction device, and connecting the air suction device with the air suction port one-way valve 209 through an air suction pipeline for air suction to enable the blind hole of the workpiece 4 to be processed and the interior of the hollow flow channel 202 to be in a negative pressure state;
step six: the inside of the blind hole of the workpiece 4 to be processed is in a negative pressure state, then the air extractor is closed, because the one-way valve 209 of the air extraction opening only allows gas to flow in one direction, the inside of the blind hole of the workpiece 4 to be processed is always kept in a negative pressure state, at the moment, the abrasive flow inlet valve 207 is opened, and the liquid metal abrasive flow generator is started, so that the liquid metal abrasive flow generated in the liquid metal abrasive flow generator flows through the abrasive flow inlet valve 207, the gas-liquid abrasive flow connector 208 and the flow channel connector 206 and enters the hollow flow channel 202, and because the blind hole of the workpiece 4 to be processed and the hollow flow channel 202 are both in a negative pressure state, the liquid metal abrasive flow can directly;
step seven: after the liquid metal abrasive particle flow is injected, the abrasive particle flow inlet valve 207 is closed, the sine alternating current power supply connected with the three-phase stator coil 302 is turned on, the three-phase stator coil 302 can generate a rotating magnetic field under the alternating current field, the rotating magnetic field generated during the working of the three-phase stator coil 302 drives metal particles in the liquid metal polishing solution to move, abrasive particles in the liquid metal polishing solution rotate to impact the blind hole of the workpiece 4 to be processed, and therefore the blind hole polishing of the workpiece 4 to be processed is achieved until the blind hole polishing of the workpiece 4 to be processed is completed.
In the seventh step, the rotating speed and the intensity of the rotating magnetic field generated by the three-phase stator coil 302 are controlled by adjusting the frequency and the voltage of the external sinusoidal alternating-current power supply, so that the movement condition of metal particles in the liquid metal polishing solution is changed, and the polishing efficiency is further changed.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (8)
1. The utility model provides a blind hole polishing is with liquid metal magnetic force burnishing device which characterized in that: the device comprises a workbench (5), a mobile positioning device (1), a flow channel device (2) and a rotating magnetic field device (3), wherein the mobile positioning device (1) is arranged on the workbench (5), the flow channel device (2) is arranged on the mobile positioning device (1), and the rotating magnetic field device (3) is fixed on the workbench (5) obliquely below the flow channel device (2);
the mobile positioning device (1) comprises a horizontal module mounting frame (101), a horizontal linear module (102), a horizontal module driving motor (107), a vertical linear module (106) and a vertical module driving motor (105), wherein the horizontal module mounting frame (101) is fixed on the workbench (5); the horizontal linear module (102) is horizontally fixed on the horizontal module mounting frame (101), the horizontal module driving motor (107) is fixed at one end of the horizontal linear module (102), and a driving shaft of the horizontal module driving motor (107) is connected with the horizontal linear module (102) and drives a horizontal sliding block (103) on the horizontal linear module (102) to do linear motion along the horizontal direction; the vertical linear module (106) is vertically fixed on a horizontal sliding block (103) of the horizontal linear module (102), a vertical module driving motor (105) is fixed at the upper end of the vertical linear module (106), and a driving shaft of the vertical module driving motor (105) is connected with the vertical linear module (106) and drives a vertical sliding block (104) on the vertical linear module (106) to do linear motion along the vertical direction; the runner device (2) is arranged on a vertical sliding block (104) of a vertical linear module (106), and the rotating magnetic field device (3) is arranged on a workbench (5) beside the horizontal module mounting rack (101); the rotating magnetic field device (3) and the flow channel device (2) are arranged on the same side of the vertical sliding block (104);
the runner device (2) comprises a supporting block (301), an auxiliary main clamping head (303), a three-phase stator coil (302) and a stator coil fixing seat (305), wherein the supporting block (301) is fixed on the workbench (5), and an installation inclined surface inclining upwards is arranged on the supporting block (301); a circular groove (306) for mounting the stator coil fixing seat (305) and the auxiliary main clamping head (303) is formed in the mounting inclined plane; the stator coil fixing seat (305) is embedded in a circular groove (306) of the installation inclined plane, a circular groove hole for installing the auxiliary main clamping head (303) fixing seat is formed in the stator coil fixing seat (305), the bottom of the auxiliary main clamping head (303) is embedded in the circular groove hole of the stator coil fixing seat (305), the bottom of the auxiliary main clamping head (303) is attached to the bottom of the circular groove (306), and the bottom of the auxiliary main clamping head (303) is fixed on the circular groove (306) of the installation inclined plane through a bolt; the three-phase stator coil (302) is fixed on the stator coil fixing seat (305), and the three-phase stator coil (302) is arranged around the whole auxiliary main clamping head (303); the input end of the three-phase stator coil (302) is connected with an external sine alternating current power supply;
the runner device (2) comprises a main clamping head (201), a hollow runner fixing seat (204), a runner fixing plate (203), a sliding rail connecting plate (205), an air suction port one-way valve (209), a gas-liquid abrasive flow joint (208), an abrasive flow inlet valve (207), a runner joint (206), a hollow runner (202), a flange plate (210) and a main clamping end O-shaped ring (211), wherein the sliding rail connecting plate (205) is vertically arranged on a vertical sliding block (104) of a vertical linear module (106), the runner fixing plate (203) is fixedly arranged on the sliding rail connecting plate (205), the hollow runner fixing seat (204) is fixedly arranged on the runner fixing plate (203), the hollow runner (202) is arranged on the hollow runner fixing seat (204), one end of the hollow runner (202) is sleeved with the flange plate (210), and the main clamping head (201) is arranged on the flange plate (210), the main clamping head (201) is over against the installation inclined plane of the runner device (2), the axial lead of the main clamping head (201) is perpendicular to the installation inclined plane, and the axial lead of the hollow runner (202) is parallel to the axial leads of the auxiliary main clamping head (303) and the main clamping head (201) when the hollow runner (202) is installed; two ends of a workpiece (4) to be processed are clamped through a main clamping head (201) and an auxiliary main clamping head (303) respectively, and a blind hole of the workpiece (4) to be processed is located at one end of the main clamping head (201); the other end of the hollow flow passage (202) is connected with a gas-liquid abrasive particle flow joint (208) through a flow passage joint (206), the gas-liquid abrasive particle flow joint (208) is provided with three inlets and outlets which are respectively an abrasive particle flow inlet end, an abrasive particle flow outlet end and an air exhaust end, the abrasive particle flow inlet end, the abrasive particle flow outlet end and the air exhaust end are communicated with each other, the abrasive particle flow outlet end of the gas-liquid abrasive particle flow joint (208) is connected with the flow passage joint (206), the abrasive particle flow inlet end of the gas-liquid abrasive particle flow joint (208) is connected with an external liquid metal abrasive particle flow generating device through an abrasive particle flow inlet valve (207) and an abrasive particle flow pipeline, the abrasive particle flow generated by the liquid metal abrasive particle flow generating device is a liquid metal abrasive particle flow, the air exhaust end of the gas-liquid abrasive particle flow joint (208) is connected with the, The flow channel joint (206), the hollow flow channel (202) and the main clamping head (201) jointly form a flow channel part of the flow channel device (2), and the heights of the gas-liquid abrasive particle flow joint (208), the flow channel joint (206), the hollow flow channel (202) and the main clamping head (201) are sequentially reduced.
2. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the main clamping head (201) comprises a flange-shaped fixed flange end and a main mounting end used for fixing a workpiece (4) to be processed, the fixed flange end of the main clamping head (201) is fixedly connected with the flange plate (210), a workpiece mounting main groove matched with the shape of the processing end of the workpiece (4) to be processed is arranged on the main mounting end of the main clamping head (201), the processing end of the workpiece (4) to be processed is mounted in the workpiece mounting main groove, a main clamping end O-shaped ring (211) used for preventing the processing end of the workpiece (4) to be processed from sliding is arranged in the workpiece mounting main groove of the main clamping head (201), the inner ring of the main clamping end O-shaped ring (211) is attached and sleeved on the processing end of the workpiece (4) to be processed, and the outer ring of the main clamping end O-shaped ring (211) is attached to the inner wall of the workpiece mounting main groove; the auxiliary main clamping head (303) comprises a cylindrical fixed end and an auxiliary mounting end used for fixing a workpiece (4) to be processed, the fixed end of the auxiliary main clamping head (303) is fixed in a circular groove (306) of a supporting block (301), a workpiece mounting auxiliary groove matched with the shape of the rear end of the workpiece (4) to be processed is formed in the auxiliary mounting end of the auxiliary main clamping head (303), the rear end of the workpiece (4) to be processed is mounted in the workpiece mounting auxiliary groove, an auxiliary clamping end O-shaped ring (304) used for preventing the workpiece (4) to be processed from sliding is arranged at the bottom of the workpiece mounting auxiliary groove of the auxiliary main clamping head (303), the inner ring of the auxiliary clamping end O-shaped ring (304) is attached and sleeved at the rear end of the workpiece (4) to be processed, and the outer ring of the auxiliary clamping end O-shaped ring (304) is attached to the inner wall of the workpiece mounting auxiliary groove.
3. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: horizontal straight line module (102) pass through the bolt fastening on horizontal module mounting bracket (101), and horizontal module mounting bracket (101) pass through the bolt fastening on workstation (5), and vertical straight line module (106) pass through the bolt fastening on horizontal slider (103) of horizontal straight line module (102).
4. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the gas-liquid abrasive particle flow joint (208) is a square joint, and the gas-liquid abrasive particle flow joint (208) is fixed on the sliding rail connecting plate (205).
5. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the hollow runner fixing seat (204) comprises a runner fixing base and a runner fixing upper seat, arc-shaped grooves matched with the hollow runner (202) are formed in the runner fixing base and the runner fixing upper seat, the runner fixing base and the runner fixing upper seat clamp the hollow runner (202) together, and the runner fixing base and the runner fixing upper seat are fixedly connected through bolts.
6. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the axial lead of the hollow flow channel (202) and the axial lead of the fixed end of the auxiliary main clamping head (303) are inclined at an angle of 30-60 degrees with the horizontal plane, and the axial lead of the hollow flow channel (202) and the axial lead of the fixed end of the auxiliary main clamping head (303) are perpendicular to the installation inclined plane of the supporting block (301).
7. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the supporting block (301) is a supporting block (301) in a right-angle triangular prism shape, two right-angle surfaces and an installation inclined surface are arranged on the supporting block (301), the right-angle surfaces of the supporting block (301) are fixedly installed on the workbench (5), and the auxiliary main clamping head (303) is installed on the installation inclined surface of the supporting block (301) through a turntable base.
8. The liquid metal magnetic polishing device for blind hole polishing as claimed in claim 1, wherein: the air extracting device is an air extracting pump, and the hollow flow passage (202) is a hollow shaft.
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| CN201921737892.8U CN211439493U (en) | 2019-10-16 | 2019-10-16 | Liquid metal magnetic polishing device for blind hole polishing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640615A (en) * | 2019-10-16 | 2020-01-03 | 浙江工业大学 | Liquid metal magnetic polishing device and method for blind hole polishing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640615A (en) * | 2019-10-16 | 2020-01-03 | 浙江工业大学 | Liquid metal magnetic polishing device and method for blind hole polishing |
| CN110640615B (en) * | 2019-10-16 | 2024-04-09 | 浙江工业大学 | Liquid metal magnetic polishing device for blind hole polishing and method thereof |
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