A deburring device and method for removing burrs in an aluminum alloy part based on electric spark machining

Abstract

The application discloses a deburring device and method for removing burrs in an aluminum alloy piece based on electric spark machining, and relates to the technical field of removing burrs in the inner cavity of an aluminum alloy piece by using the principle of electric spark machining. The deburring device comprises a groove body into which working liquid is injected, a positioning and turnover assembly arranged on the groove body and used for positioning and turning over the aluminum alloy piece, a feeding cylinder fixed on the left end surface of the vertical plate, a piston rod of the feeding cylinder penetrating through the vertical plate to the right, a vertically arranged movable plate fixed on the extended end of the piston rod, a horizontal plate and a rack fixed on the upper end of the movable plate in sequence, an insulating tube C horizontally arranged in the lower end of the movable plate, a working electrode C fixed on the right end of the insulating tube C, and a third conductive column fixed on the left end surface of the working electrode C and located in the insulating tube C. The application has the advantages of greatly reducing the working intensity of workers in removing burrs and greatly improving the efficiency of removing burrs in the inner cavity of the aluminum alloy piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of removing burrs in the inner cavity of an aluminum alloy part by using the principle of electric spark machining, and particularly relates to a burr removing device and method for removing burrs in the inner cavity of an aluminum alloy part based on electric spark machining. BACKGROUND

[0002] An aluminum alloy part formed by an extrusion molding machine has a structure as shown in Figures 1-2 The aluminum alloy part includes a horizontal aluminum alloy tube 1, three vertical aluminum alloy tubes 2 fixed on the top surface of the horizontal aluminum alloy tube 1 along the length direction of the horizontal aluminum alloy tube 1, the three vertical aluminum alloy tubes 2 are arranged at intervals, the inner cavities of the three vertical aluminum alloy tubes 2 are connected with the inner cavity of the horizontal aluminum alloy tube 1, the lengths of the three vertical aluminum alloy tubes 2 are equal to the length of the horizontal aluminum alloy tube 1, and the cross sections of the vertical aluminum alloy tubes 2 and the horizontal aluminum alloy tube 1 are square. The horizontal aluminum alloy tube 1 and the three vertical aluminum alloy tubes 2 of the aluminum alloy part are mainly used for assembling a cabinet or a case.

[0003] When a batch of aluminum alloy parts are produced in a workshop, due to the extrusion molding process, there are a large number of burrs distributed at the four corners of the inner cavity of the horizontal aluminum alloy tube 1 and the inner cavities of the three vertical aluminum alloy tubes 2. Therefore, the burrs at the four corners of the inner cavities of the horizontal aluminum alloy tube 1 and the vertical aluminum alloy tubes 2 of the aluminum alloy part need to be polished off according to the process.

[0004] Since the burrs are distributed in the inner cavities of the horizontal aluminum alloy tube 1 and the vertical aluminum alloy tubes 2 of the aluminum alloy part, the burrs in the inner cavities cannot be polished off by using a common polisher. Therefore, an electric spark machining device is used to remove the burrs at the four corners of the inner cavities of the horizontal aluminum alloy tube 1 and the vertical aluminum alloy tubes 2 of the aluminum alloy part.

[0005] The structure of the electric spark machining device is shown in Figure 3 The electric spark machining device includes a tank 3, a working liquid injected into the tank 3, a plastic base 4 fixed in the tank 3 and located on the bottom wall of the tank 3, a first conductive column 5 fixed in the plastic base 4, a support plate 6 fixed on the left outer wall of the tank 3, an insulating tube 7 penetrating through the through hole of the support plate 6, an annular plate 8 fixed on the outer wall of the insulating tube 7, the annular plate 8 being supported on the top surface of the support plate 6, a working electrode 9 fixed on the bottom of the insulating tube 7, the cross section of the working electrode 9 being square, and a second conductive column 10 fixed on the top surface of the working electrode 9 and located in the insulating tube 7.

[0006] The electric spark machining device further includes a pulse power supply M11, the pulse power supply M11 is connected with a first wire 12 and a second wire 13, the other end of the first wire 12 penetrates through the bottom wall of the tank 3 and is connected with the first conductive column 5, and the other end of the second wire 13 penetrates through the top end of the insulating tube 7 and is connected with the second conductive column 10.

[0007] The method that the worker removes the burrs at the four corners in the inner cavities of the horizontal aluminum alloy pipe 1 and the three vertical aluminum alloy pipes 2 of the aluminum alloy piece by using the electric spark machining device is as follows:

[0008] Sa, the worker wears an insulating glove, and then takes out an aluminum alloy piece to be removed of burrs as shown in the figure; Figures 1-2

[0009] Sb, the worker lays the horizontal aluminum alloy pipe 1 of the aluminum alloy piece on the top surface of the plastic base 4 as shown in the figure, at this time, the bottom surface of the horizontal aluminum alloy pipe 1 is in contact with the first conductive column 5, and the working liquid in the groove body 3 enters the inner cavities of the horizontal aluminum alloy pipe 1 and the three vertical aluminum alloy pipes 2 of the aluminum alloy piece; Figure 4

[0010] Sc, the worker pulls out the insulating pipe 7 from the support plate 6 and holds the insulating pipe 7 by hand;

[0011] Sd, the worker removes the burrs at the four corners in the inner cavity of the first vertical aluminum alloy pipe 2 of the aluminum alloy piece, and the specific operation steps are as follows:

[0012] Sd1, the worker moves the working electrode 9 at the bottom of the insulating pipe 7 directly above the first vertical aluminum alloy pipe 2 of the aluminum alloy piece as shown in the figure; Figure 5

[0013] Sd2, the worker turns on the pulse power supply M11, the pulse power supply M11 supplies power to the first conductive column 5 through the first wire 12, the first conductive column 5 conducts current to the horizontal aluminum alloy pipe 1, the horizontal aluminum alloy pipe 1 conducts current to the three vertical aluminum alloy pipes 2, and at the same time, the pulse power supply M11 supplies power to the second conductive column 10 through the second wire 13, the second conductive column 10 transmits current to the working electrode 9;

[0014] Sd3, the worker moves the insulating pipe 7 downward, so that the working electrode 9 at the bottom of the insulating pipe 7 is initially inserted into the top port of the first vertical aluminum alloy pipe 2 as shown in the figure, at this time, the pulse electric spark is generated at the four corners of the working electrode 9, and the pulse electric spark begins to melt the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe 2; Figure 6

[0015] Sd4, the worker continues to move the insulating pipe 7 downward, the insulating pipe 7 drives the working electrode 9 to continue to move downward, and the working electrode 9 gradually removes the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe 2; when the working electrode 9 moves to the bottom port of the vertical aluminum alloy pipe 2 as shown in the figure, the burrs at the four corners in the inner cavity of the first vertical aluminum alloy pipe 2 of the aluminum alloy piece can be finally and completely removed; Figure 7

[0016] ​​​​​Se, the worker repeats the operation of step Sd twice, so as to remove the burrs at the four corners in the inner cavities of the remaining two vertical aluminum alloy pipes 2 of the aluminum alloy piece;

[0017] Sf, removing the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe 1 of the aluminum alloy piece, the specific operation steps are as follows:

[0018] Sf1, the worker initially inserts the working electrode 9 into the left port of the horizontal aluminum alloy pipe 1, as shown in the figure, at this time, the pulse electric spark is generated at the four corners of the working electrode 9, and the pulse electric spark starts to melt the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe 1; Figure 8

[0019] Sf2, the worker continues to move the insulating tube 7 to the right, and the insulating tube 7 drives the working electrode 9 to continue to move to the right, and the working electrode 9 gradually removes the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe 1; when the working electrode 9 moves to the right port of the horizontal aluminum alloy pipe 1, as shown in the figure, the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe 1 of the aluminum alloy piece are removed, so that the burrs at the four corners in the inner cavities of the horizontal aluminum alloy pipe 1 and the three vertical aluminum alloy pipes 2 of the aluminum alloy piece are finally removed by using the electric spark machining device; Figure 9

[0020] Sg, taking away the aluminum alloy piece without burrs, the specific operation steps are as follows:

[0021] Sg1, the worker turns off the pulse power supply M11, and then reinserts the insulating tube 7 into the through hole of the support plate 6 to support the annular plate 8 on the support plate 6, so as to place the insulating tube 7;

[0022] Sg2, the worker takes away the aluminum alloy piece without burrs from the plastic base 4;

[0023] Sh, the worker repeats the operation of steps Sb~Sg multiple times, so as to remove the burrs in the inner cavities of multiple aluminum alloy pieces.

[0024] However, the electric spark machining device used in the workshop can remove the burrs at the four corners in the inner cavities of the horizontal aluminum alloy pipe 1 and the three vertical aluminum alloy pipes 2 of the aluminum alloy piece, but in actual operation, the following technical defects are still reflected:

[0025] ​​I. In steps Sd to Se, the insulating tube 7 needs to be moved downwards three times to remove the burrs at the four corners of the three vertical aluminum alloy tubes 2 inside the aluminum alloy part through the working electrode 9. In step Sf, the insulating tube 7 needs to be moved horizontally once to remove the burrs at the four corners of the horizontal aluminum alloy tube 1 inside the aluminum alloy part through the working electrode 9. In other words, a total of four processes are required to remove the burrs from the inner cavity of one aluminum alloy part, which takes longer and reduces the efficiency of removing burrs from the inner cavity of the aluminum alloy part.

[0026] II. In steps Sd to Sf, workers need to manually move the insulating tube 7 to remove the burrs at the four corners of the horizontal aluminum alloy tube 1 and the three vertical aluminum alloy tubes 2 inside the aluminum alloy part. This undoubtedly increases the workload of workers in removing burrs.

[0027] Therefore, there is an urgent need for a deburring device and method that can greatly reduce the workload of workers in removing burrs and greatly improve the efficiency of removing burrs from the inner cavity of aluminum alloy parts. Summary of the Invention

[0028] The purpose of this invention is to overcome the shortcomings of the prior art and provide a deburring device and method for removing internal burrs of aluminum alloy parts based on electrical discharge machining, which greatly reduces the workload of workers in removing burrs and greatly improves the efficiency of removing burrs from the internal cavity of aluminum alloy parts.

[0029] The objective of this invention is achieved through the following technical solution: a deburring device for removing internal burrs from aluminum alloy parts based on electrical discharge machining, comprising a tank filled with working fluid and a positioning and turnover assembly disposed on the tank for positioning and turnover of the aluminum alloy parts. The positioning and turnover assembly includes a turnover cylinder fixed on the right side wall of the tank. The piston rod of the turnover cylinder extends to the left into the tank, and a plastic positioning seat is fixed on the extended end. A groove is formed on the top surface of the plastic positioning seat. A first conductive post is fixed at the bottom of the groove, penetrating downward through the bottom surface of the plastic positioning seat. The top surface of the first conductive post is flush with the bottom of the groove.

[0030] A connecting frame is fixed on the right side wall of the tank. The top wall of the connecting frame extends directly above the tank. A guide post is fixed on the bottom surface of the extended end. A floating plate is slidably installed on the guide post. A gear located directly above the floating plate is rotatably installed on the front end face of the guide post via a rotating shaft. A fixed bar extending downward and tilting to the right is fixed on the front end face of the gear. A connecting rod is hinged to the other end of the fixed bar via a pin shaft. The other end of the connecting rod is hinged to the floating plate.

[0031] Three vertical insulation pipes B are fixed in the floating plate and spaced along the length direction of the floating plate, the bottom of each of the three insulation pipes B is connected with a working electrode B, and the top surface of each of the three working electrodes B is fixed with a second conductive column located in the insulation pipe B;

[0032] A vertical plate is fixed on the left side wall of the groove body, a feeding cylinder is fixed on the left end face of the vertical plate, the piston rod of the feeding cylinder penetrates through the vertical plate to the right, a vertical movable plate is fixed on the extending end of the piston rod, a horizontal plate and a gear rack are sequentially fixed on the upper end of the movable plate, the gear rack is engaged with a gear, a horizontal insulation pipe C is fixed in the lower end of the movable plate, a working electrode C is fixed on the right end of the insulation pipe C, and a third conductive column located in the insulation pipe C is fixed on the left end face of the working electrode C.

[0033] A stop valve is fixed on the bottom wall of the groove body and communicates with the groove body.

[0034] The sink is matched with the outer contour of the transverse aluminum alloy pipe of the aluminum alloy piece.

[0035] A guide sleeve is fixed on the top surface of the floating plate and is sleeved on the guide column.

[0036] A sealing ring is arranged between the piston rod of the turnover cylinder and the right side wall of the groove body.

[0037] The deburring device further comprises a pulse power supply P, the pulse power supply P is connected with a first wire and a second wire, the first wire penetrates through the bottom wall of the groove body and is connected with the first conductive column, the end of the second wire is connected with three branch wires B in parallel, the three branch wires B penetrate through the top wall of the three insulation pipes B respectively and are connected with the corresponding second conductive columns respectively, the end of the second wire is also connected with a branch wire C in parallel, the branch wire C penetrates through the top wall of the insulation pipe C and is connected with the third conductive column.

[0038] Sealing filling layers are arranged between the first wire and the bottom wall of the groove body, between the branch wires B and the top wall of the insulation pipes B, and between the branch wire C and the top wall of the insulation pipe C.

[0039] The deburring device further comprises a controller, the controller is electrically connected with the turnover cylinder, the feeding cylinder and the stop valve through signal lines.

[0040] A method for removing burrs in an aluminum alloy piece based on electric spark machining, comprising the following steps:

[0041] S1, a worker puts on an insulating glove, and then takes out an aluminum alloy piece to be deburred;

[0042] S2, the transverse aluminum alloy pipe of the aluminum alloy piece is put into the sink of the plastic positioning seat of the positioning and turnover assembly, and the sink is matched with the outer contour of the transverse aluminum alloy pipe of the aluminum alloy piece, so that the positioning of the aluminum alloy piece is realized; after the aluminum alloy piece is positioned, the working liquid in the groove body enters the inner cavities of the transverse aluminum alloy pipe and the three vertical aluminum alloy pipes, and the working liquid fills the inner cavities of the transverse aluminum alloy pipe and the vertical aluminum alloy pipes;

[0043] S3, the piston rod of the turnover cylinder of the positioning and turnover assembly is controlled to stretch out to the left, the plastic positioning seat is driven to move to the left by the piston rod, the plastic positioning seat drives the aluminum alloy piece and the first conductive column to move to the left synchronously, when the piston rod of the turnover cylinder is completely stretched out, the aluminum alloy piece enters the deburring station, at this time, the three vertical aluminum alloy pipes of the aluminum alloy piece are respectively located directly above the top ports of the three working electrodes B, and the left port of the transverse aluminum alloy pipe of the aluminum alloy piece is located to the right of the working electrode C;

[0044] S4, the worker turns on the pulse power supply P, the pulse power supply P is powered on through the first wire to the first conductive column, the first conductive column conducts current to the transverse aluminum alloy pipe, and the transverse aluminum alloy pipe conducts current to the three vertical aluminum alloy pipes;

[0045] At the same time, the pulse power supply P is powered on through the second wire to the three branch lines B, the three branch lines B are powered on to the three second conductive columns respectively, and the second conductive columns conduct current to the working electrodes B;

[0046] At the same time, the pulse power supply P is also powered on through the second wire to a branch line C, the branch line C is powered on to the third conductive column, and the third conductive column conducts current to the working electrode C;

[0047] S5, the piston rod of the feeding cylinder is controlled to stretch out to the right, the movable plate is driven to move linearly to the right by the piston rod, the movable plate drives the horizontal plate, the rack and the insulating pipe C to move linearly to the right synchronously, wherein the insulating pipe C drives the working electrode C to move towards the left port of the transverse aluminum alloy pipe;

[0048] At the same time, the rack drives the gear to rotate clockwise around the rotating shaft, the fixed rod is driven to rotate synchronously by the gear, the connecting rod is driven to rotate downward by the fixed rod, the floating plate is driven to move downward along the guide column by the connecting rod, the three insulating pipes B are driven to move downward synchronously by the floating plate, and the insulating pipes B drive the working electrodes B to move towards the top ports of the vertical aluminum alloy pipes;

[0049] S6, with the piston rod of the feeding cylinder continuing to stretch to the right, the working electrode C is initially inserted into the left port of the transverse aluminum alloy pipe of the aluminum alloy piece, and the pulse electric spark from the four corners of the working electrode C begins to melt the burrs at the four corners in the inner cavity of the transverse aluminum alloy pipe; at the same time, the three working electrodes B are initially inserted into the top ports of the three vertical aluminum alloy pipes of the aluminum alloy piece, and the pulse electric spark from the four corners of the working electrode B begins to melt the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe;

[0050] S7, with the piston rod of the feeding cylinder continuing to stretch to the right, the working electrode C gradually moves to the right in the transverse aluminum alloy pipe, and in the moving process, the working electrode C gradually removes the burrs at the four corners in the inner cavity of the transverse aluminum alloy pipe; at the same time, the working electrode B gradually moves downward in the vertical aluminum alloy pipe, and in the moving process, the working electrode B gradually removes the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe;

[0051] S8, when the piston rod of the feeding cylinder is completely stretched out, the working electrode C just moves into the right port of the transverse aluminum alloy pipe, thereby completely removing the burrs at the four corners in the inner cavity of the transverse aluminum alloy pipe;

[0052] At the same time, the three working electrodes C respectively just move into the bottom ports of the three vertical aluminum alloy pipes, thereby completely removing the burrs at the four corners in the inner cavities of the three vertical aluminum alloy pipes, thereby finally realizing the removal of all the burrs in the first aluminum alloy piece, and further obtaining an aluminum alloy piece without burrs in the inner cavity;

[0053] S9, the aluminum alloy piece without burrs is taken away, and the specific operation steps are as follows:

[0054] S91, the worker turns off the pulse power supply P;

[0055] S92, the piston rod of the feeding cylinder is controlled to retract to the left, the piston rod brings the movable plate to move linearly to the left, the movable plate drives the horizontal plate, the rack and the insulating tube C to move linearly to the left synchronously, wherein the insulating tube C drives the working electrode C to gradually exit from the inner cavity of the transverse aluminum alloy pipe to the left;

[0056] At the same time, the rack drives the gear to rotate counterclockwise around the rotating shaft, the gear drives the fixed rod and the connecting rod to rotate upward, the connecting rod drives the floating plate to move upward along the guide column, the floating plate drives the three insulating tubes B to move upward synchronously, and the insulating tube B drives the working electrode B to gradually exit from the inner cavity of the vertical aluminum alloy pipe upward;

[0057] S93, when the piston rod of the feeding cylinder is completely retracted, the insulating tube C and the working electrode C move to the initial position, and at the same time, the three insulating tubes B and the three working electrodes B move to the initial position;

[0058] S94, the piston rod of the turnover cylinder is controlled to retract rightwards, the plastic positioning seat is driven to move rightwards by the piston rod, and the aluminum alloy piece without burrs is driven to move rightwards by the plastic positioning seat; when the piston rod of the turnover cylinder is completely retracted, the plastic positioning seat moves to the initial position, at this time, the worker can take the aluminum alloy piece without burrs out of the groove body;

[0059] S10, the worker repeats the operations of steps S2-S9 multiple times, so that the burrs in the inner cavities of the plurality of aluminum alloy pieces are removed.

[0060] The present application has the following advantages: greatly reducing the working strength of the worker in removing the burrs, and greatly improving the efficiency of removing the burrs in the inner cavities of the aluminum alloy pieces. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 It is a structural schematic view of the aluminum alloy piece;

[0062] Figure 2 It is a main cross-sectional schematic view of Figure 1

[0063] Figure 3 It is a structural schematic view of the electric spark machining device of the prior art;

[0064] Figure 4 It is a schematic view in which the worker lays the transverse aluminum alloy pipe of the aluminum alloy piece on the top surface of the plastic base;

[0065] Figure 5 It is a schematic view in which the worker inserts the working electrode into the first vertical aluminum alloy pipe;

[0066] Figure 6 It is a schematic view in which the working electrode is preliminarily inserted into the top port of the first vertical aluminum alloy pipe;

[0067] Figure 7 It is a schematic view in which the working electrode moves to the bottom port of the vertical aluminum alloy pipe;

[0068] Figure 8 It is a schematic view in which the worker preliminarily inserts the working electrode into the left port of the transverse aluminum alloy pipe;

[0069] Figure 9 It is a schematic view in which the working electrode moves to the right port of the transverse aluminum alloy pipe;

[0070] Figure 10 It is a structural schematic view of the present application;

[0071] Figure 11 It is a main cross-sectional schematic view of Figure 10

[0072] It is a structural schematic view of the present application; Figure 12 Figure 11 ​​Schematic diagram of the middle pulse power supply P, the first wire, the second wire, the branch B and the branch C;

[0073] Figure 13 Schematic diagram of the structure of the positioning and turnover assembly;

[0074] Figure 14 Schematic diagram of the main section of Figure 13 ;

[0075] Figure 15 Schematic diagram of the connection of the connecting frame, the guide column, the gear, the fixed bar and the connecting rod;

[0076] Figure 16 Schematic diagram of the local section of Figure 15 ;

[0077] Figure 17 Schematic diagram of the connection of the floating plate, the insulating tube B and the working electrode B;

[0078] Figure 18 Schematic diagram of the main section of Figure 17 ;

[0079] Figure 19 Schematic diagram of the connection of the feeding cylinder, the movable plate, the insulating tube C and the working electrode C;

[0080] Figure 20 Schematic diagram of the main section of Figure 19 ;

[0081] Figure 21 Schematic diagram of the realization of the positioning of the aluminum alloy piece;

[0082] Figure 22 Schematic diagram of the aluminum alloy piece entering the deburring station;

[0083] Figure 23 Schematic diagram of the preliminary insertion of the working electrode C into the left port of the transverse aluminum alloy pipe of the aluminum alloy piece;

[0084] Figure 24 Schematic diagram of the movement of the working electrode C into the right port of the transverse aluminum alloy pipe;

[0085] Figure 25 Schematic diagram of the taking away of the aluminum alloy piece without burrs;

[0086] In the figure:

[0087] 1-transverse aluminum alloy pipe, 2-vertical aluminum alloy pipe;

[0088] 3-groove body, 4-plastic base, 5-first conductive column, 6-branch plate, 7-insulating tube, 8-ring plate, 9-working electrode, 10-second conductive column, 11-pulse power supply M, 12-first wire, 13-second wire;

[0089] 14-Turnover cylinder, 15-Plastic positioning seat, 16-Settling trough, 17-Connecting frame, 18-Guide column, 19-Floating plate, 20-Gear, 21-Fixing bar, 22-Pin, 23-Connecting rod, 24-Insulating tube B, 25-Working electrode B;

[0090] 26-Vertical plate, 27-Feed cylinder, 28-Moving plate, 29-Horizontal plate, 30-Rack, 31-Insulating tube C, 32-Working electrode C, 33-Third conductive post;

[0091] 34-Guide sleeve, 35-Pulse power supply P, 36-Branch B, 37-Branch C. Detailed Implementation

[0092] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0093] like Figures 10-20 As shown, a deburring device for removing internal burrs from aluminum alloy parts based on electrical discharge machining (EDM) includes a tank 3 filled with working fluid and a positioning and turnover assembly mounted on the tank 3 for positioning and turnover of the aluminum alloy parts. The positioning and turnover assembly includes a turnover cylinder 14 fixed to the right side wall of the tank 3. The piston rod of the turnover cylinder 14 extends to the left into the tank 3, and a plastic positioning seat 15 is fixed to the extended end. A sealing ring is installed between the piston rod of the turnover cylinder 14 and the right side wall of the tank 3. A recessed groove 16 is formed on the top surface of the plastic positioning seat 15, which matches the outer contour of the transverse aluminum alloy tube 1 of the aluminum alloy part. A first conductive post 5 is fixed to the bottom of the recessed groove 16, penetrating downward through the bottom surface of the plastic positioning seat 15. The top surface of the first conductive post 5 is flush with the bottom of the recessed groove 16. A shut-off valve connected to the bottom wall of the tank 3 is fixed to the bottom wall of the tank 3. Opening the shut-off valve allows the working fluid in the tank 3 to be discharged.

[0094] A connecting frame 17 is fixedly installed on the right side wall of the tank 3. The top wall of the connecting frame 17 extends directly above the tank 3, and a guide post 18 is fixedly installed on the bottom surface of the extended end. A floating plate 19 is slidably installed on the guide post 18. A gear 20 located directly above the floating plate 19 is rotatably installed on the front end face of the guide post 18 via a rotating shaft. A fixed bar 21 extending downward and tilting to the right is fixedly installed on the front end face of the gear 20. The other end of the fixed bar 21 is hinged to a connecting rod 23 via a pin 22. The other end of the connecting rod 23 is hinged to the floating plate 19. A guide sleeve 34 is fixedly installed on the top surface of the floating plate 19. The guide sleeve 34 is slidably fitted on the guide post 18.

[0095] Three vertical insulation tubes B24 are fixed in the floating plate 19 and spaced along the length direction of the floating plate 19, the bottom of each of the three vertical insulation tubes B24 is connected with a working electrode B25, the size of the working electrode B25 is smaller than the size of the inner cavity of the vertical aluminum alloy tube 2, and a second conductive column 10 located in the insulation tube B24 is fixed on the top surface of each of the three working electrodes B25.

[0096] A vertical plate 26 is fixed on the left side wall of the groove body 3, a feeding cylinder 27 is fixed on the left end surface of the vertical plate 26, the piston rod of the feeding cylinder 27 penetrates through the vertical plate 26 to the right, and a vertical movable plate 28 is fixed on the extending end of the piston rod, a horizontal plate 29 and a rack 30 are sequentially fixed on the upper end portion of the movable plate 28, the rack 30 is engaged with the gear 20, a horizontal insulation tube C31 is fixed in the lower end portion of the movable plate 28, a working electrode C32 is fixed on the right end portion of the insulation tube C31, the size of the working electrode C32 is smaller than the size of the horizontal aluminum alloy tube 1, and a third conductive column 33 located in the insulation tube C31 is fixed on the left end surface of the working electrode C32.

[0097] The deburring device further comprises a pulse power supply P35, the first conductive column 5 and the second conductive column 10 are connected with the first wire 12 and the second wire 13 of the pulse power supply P35, the first wire 12 penetrates through the bottom wall of the groove body 3, the three second conductive columns 10 are connected with three branch wires B36 which are parallel connected at the end of the second wire 13 and penetrate through the top walls of the three insulation tubes B24 respectively, and the third conductive column 33 is connected with a branch wire C37 which is parallel connected at the end of the second wire 13 and penetrates through the top wall of the insulation tube C31.

[0098] The first wire 12 and the bottom wall of the groove body 3 are connected with a sealing filling layer, the three branch wires B36 and the top walls of the three insulation tubes B24 are connected with a sealing filling layer, and the branch wire C37 and the top wall of the insulation tube C31 are connected with a sealing filling layer.

[0099] The deburring device further comprises a controller, the controller is electrically connected with the signal lines of the rotating cylinder 14, the feeding cylinder 27 and the stop valve, and the controller is used for controlling the extension or retraction of the piston rods of the rotating cylinder 14 and the feeding cylinder 27, so as to facilitate the operation of the worker.

[0100] A method for removing burrs in an aluminum alloy piece based on electric spark machining, which comprises the following steps:

[0101] S1, a worker wears an insulating glove, and then takes out an aluminum alloy piece to be deburred as shown in Figures 1-2 ;

[0102] S2, the transverse aluminum alloy pipe 1 of the aluminum alloy piece is put into the sink 16 of the plastic positioning seat 15 of the positioning and turnover assembly, and the sink 16 is matched with the outer contour of the transverse aluminum alloy pipe 1 of the aluminum alloy piece, so that the positioning of the aluminum alloy piece is realized, as shown in Figure 21 When the aluminum alloy piece is positioned, the working liquid in the groove body 3 enters the inner cavities of the transverse aluminum alloy pipe 1 and the three vertical aluminum alloy pipes 2, and the working liquid fills the inner cavities of the transverse aluminum alloy pipe 1 and the vertical aluminum alloy pipes 2;

[0103] S3, the piston rod of the turnover cylinder 14 of the positioning and turnover assembly is controlled to stretch out to the left, the piston rod drives the plastic positioning seat 15 to move to the left, and the plastic positioning seat 15 drives the aluminum alloy piece and the first conductive column 5 to move synchronously to the left, when the piston rod of the turnover cylinder 14 is completely stretched out, the aluminum alloy piece enters the deburring station, as shown in Figure 22 At this time, the three vertical aluminum alloy pipes 2 of the aluminum alloy piece are respectively located directly above the top ends of the three working electrodes B25, and the left end of the transverse aluminum alloy pipe 1 of the aluminum alloy piece is located to the right of the working electrode C32;

[0104] S4, the worker turns on the pulse power supply P35, the pulse power supply P35 is powered through the first wire 12 to the first conductive column 5, the first conductive column 5 conducts current to the transverse aluminum alloy pipe 1, and the transverse aluminum alloy pipe 1 conducts current to the three vertical aluminum alloy pipes 2;

[0105] At the same time, the pulse power supply P35 is powered through the second wire 13 to the three branch lines B36, the three branch lines B36 are powered to the three second conductive columns 10 respectively, and the second conductive columns 10 conduct current to the working electrodes B25;

[0106] At the same time, the pulse power supply P is also powered through the second wire 13 to a branch line C37, the branch line C37 is powered to the third conductive column 33, and the third conductive column 33 conducts current to the working electrode C32;

[0107] S5, the piston rod of the feeding cylinder 27 is controlled to stretch out to the right, the piston rod drives the movable plate 28 to move linearly to the right, the moving direction of the movable plate 28 is shown by the arrow in Figure 23 , the movable plate 28 drives the horizontal plate 29, the rack 30 and the insulating pipe C31 to move linearly to the right synchronously, wherein the insulating pipe C31 drives the working electrode C32 to move towards the left end of the transverse aluminum alloy pipe 1;

[0108] At the same time, the rack 30 drives the gear 20 to rotate clockwise around the shaft, the gear 20 drives the fixed bar 21 to rotate synchronously, the fixed bar 21 drives the connecting rod 23 to rotate downward, the connecting rod 23 drives the floating plate 19 to move downward along the guide column 18, the floating plate 19 drives the three insulating tubes B24 to move downward synchronously, and the insulating tubes B24 drive the working electrode B25 to move towards the top port of the vertical aluminum alloy tube 2;

[0109] S6. As the piston rod of the feed cylinder 27 continues to extend to the right, the working electrode C32 is initially inserted into the left port of the transverse aluminum alloy tube 1 of the aluminum alloy part, as... Figure 23 As shown, pulsed electric sparks are emitted from the four corners of the working electrode C32 to begin melting away the burrs at the four corners of the inner cavity of the transverse aluminum alloy tube 1; simultaneously, the three working electrodes B25 are initially inserted into the top ports of the three vertical aluminum alloy tubes 2 of the aluminum alloy part, as shown. Figure 23 As shown, pulsed electric sparks are emitted from the four corners of the working electrode B25 to begin melting away the burrs at the four corners of the vertical aluminum alloy tube 2.

[0110] S7. As the piston rod of the feed cylinder 27 continues to extend to the right, the working electrode C32 gradually moves to the right inside the transverse aluminum alloy tube 1. During the movement, the working electrode C32 gradually removes the burrs at the four corners of the inner cavity of the transverse aluminum alloy tube 1. At the same time, the working electrode B25 gradually moves downward inside the vertical aluminum alloy tube 2. During the movement, the working electrode B25 gradually removes the burrs at the four corners of the inner cavity of the vertical aluminum alloy tube 2.

[0111] S8. When the piston rod of the feed cylinder 27 is fully extended, the working electrode C32 just moves into the right port of the transverse aluminum alloy tube 1, as shown. Figure 24 As shown, this completely removes the burrs at the four corners of the inner cavity of the transverse aluminum alloy tube 1.

[0112] At the same time, the three working electrodes C32 are respectively moved into the bottom ports of the three vertical aluminum alloy tubes 2, as follows: Figure 24 As shown, this completely removes the burrs at the four corners of the three vertical aluminum alloy tubes 2, thus ultimately removing all the burrs inside the first aluminum alloy part, and obtaining an aluminum alloy part without burrs in the inner cavity.

[0113] Wherein, from steps S2-S8, the worker only needs to first position the aluminum alloy piece to be deburred on the plastic positioning seat 15; then controls the piston rod of the turnover cylinder 14 to extend to the left, so that the aluminum alloy piece enters the deburring station; and finally only needs to control the piston rod of the feeding cylinder 27 to extend to the right, so that the working electrode C32 is automatically inserted into the inner cavity of the horizontal aluminum alloy pipe 1 of the aluminum alloy piece to remove the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe 1, and at the same time, the three working electrodes B25 are automatically inserted into the inner cavities of the three vertical aluminum alloy pipes 2 of the aluminum alloy piece to remove the burrs at the four corners in the inner cavities of the three vertical aluminum alloy pipes 2.

[0114] It can be seen that, compared with the electric spark machining device as shown in Figures 3-9 , the worker does not need to manually move the insulating tube 7 four times to remove the burrs in the inner cavities of the three vertical aluminum alloy pipes 2 and the horizontal aluminum alloy pipe 1, respectively, but through the linkage cooperation of the plastic positioning seat 15, the turnover cylinder 14 and the feeding cylinder 27, all the burrs at the four corners in the inner cavities of the three vertical aluminum alloy pipes 2 and the horizontal aluminum alloy pipe 1 of the aluminum alloy piece are removed at one time and automatically, so that the burrs in the inner cavity of an aluminum alloy piece are removed in a short time, the time for removing all the burrs in the aluminum alloy piece is greatly shortened, and the efficiency of removing the burrs in the inner cavity of the aluminum alloy piece is greatly improved.

[0115] In addition, the deburring device only needs to control the piston rod of the feeding cylinder 27 to extend to the right, so that the insulating tube C31 and the three insulating tubes B24 are automatically moved, compared with the method for removing burrs as shown in Figures 3-9 , the worker does not need to manually move the insulating tube 7, so that the work intensity of the worker for removing the burrs is greatly reduced.

[0116] S9, taking away the aluminum alloy piece without burrs, and the specific operation steps are as follows:

[0117] S91, the worker turns off the pulse power supply P35;

[0118] S92, the piston rod of the feeding cylinder 27 is controlled to retract to the left, the piston rod brings the movable plate 28 to move linearly to the left, the movable plate 28 drives the horizontal plate 29, the rack 30 and the insulating tube C31 to move linearly to the left synchronously, wherein the insulating tube C31 drives the working electrode C32 to gradually exit from the inner cavity of the horizontal aluminum alloy pipe 1 to the left;

[0119] Meanwhile, the rack 30 drives the gear 20 to rotate anticlockwise around the rotating shaft, the fixed rod 21 and the connecting rod 23 are driven by the gear 20 to rotate upwards, the connecting rod 23 drives the floating plate 19 to move upwards along the guide column 18, the floating plate 19 drives the three insulating tubes B24 to move upwards synchronously, and the insulating tubes B24 drive the working electrodes B25 to gradually exit from the inner cavity of the vertical aluminum alloy tube 2 upwards;

[0120] S93, when the piston rod of the feeding cylinder 27 is completely retracted, the insulating tube C31 and the working electrode C32 move to the initial position, and meanwhile, the three insulating tubes B24 and the three working electrodes B25 move to the initial position;

[0121] S94, the piston rod of the week cylinder 14 is controlled to retract to the right, the plastic positioning seat 15 is driven by the piston rod to move to the right, and the aluminum alloy piece without burrs is driven by the plastic positioning seat 15 to move to the right; when the piston rod of the week cylinder 14 is completely retracted, the plastic positioning seat 15 moves to the initial position, at this time, the worker can take out the aluminum alloy piece without burrs from the groove body 3, and the direction of taking out the aluminum alloy piece is shown by the arrow in the middle of the figure. Figure 25

[0122] S10, the worker repeats the operation of steps S2-S9 for multiple times, and the burrs in the inner cavities of multiple aluminum alloy pieces can be removed.

[0123] Finally, it should be noted that the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.​

Claims

1. An apparatus for deburring aluminum alloy parts based on electrical discharge machining, characterized in that: It includes the groove (3) that is injected with working liquid inside, the positioning and turnover assembly for positioning and turnover aluminum alloy parts is arranged on the groove (3), and the positioning and turnover assembly includes the turnover air cylinder (14) fixed on the right side wall of the groove (3), the piston rod of the turnover air cylinder (14) is stretched into the groove (3) to the left, and the extending end is fixed with the plastic positioning seat (15), the top surface of the plastic positioning seat (15) is provided with the sink (16), the bottom of the sink (16) is fixed with the first conductive column (5) penetrating through the bottom surface of the plastic positioning seat (15) downward, the top surface of the first conductive column (5) is flush with the bottom of the sink (16); The top wall of the connecting frame (17) is extended above the groove (3), and the bottom surface of the extending end is fixed with the guide column (18), the floating plate (19) is slidably installed on the guide column (18), the gear (20) is rotatably installed on the front end face of the guide column (18) above the floating plate (19), the front end face of the gear (20) is fixed with the fixed strip lever (21) extending downwardly and obliquely to the right, the other end of the fixed strip lever (21) is hingedly connected with the connecting rod (23) through the pin shaft (22), and the other end of the connecting rod (23) is hingedly connected to the floating plate (19); Three vertical insulation pipes B (24) are fixed in the floating plate (19) and spaced along the length direction thereof, the bottom of each of the three insulation pipes B (24) is connected with a working electrode B (25), and the top surface of each of the three working electrodes B (25) is fixed with the second conductive column (10) located in the insulation pipe B (24); The left side wall of the groove (3) is fixed with the vertical plate (26), the left end face of the vertical plate (26) is fixed with the feeding air cylinder (27), the piston rod of the feeding air cylinder (27) penetrates through the vertical plate (26) to the right, and the extending end is fixed with the vertical movable plate (28), the upper end portion of the movable plate (28) is sequentially fixed with the horizontal plate (29) and the rack (30), the rack (30) is engaged with the gear (20), and the lower end portion of the movable plate (28) is fixed with the horizontal insulation pipe C (31) in the inside, the right end portion of the insulation pipe C (31) is fixed with the working electrode C (32), and the left end face of the working electrode C (32) is fixed with the third conductive column (33) located in the insulation pipe C (31); The deburring device further comprises the pulse power supply P (35), the first wire (12) and the second wire (13) are connected to the pulse power supply P (35), the first wire (12) penetrates through the bottom wall of the groove (3) and is connected with the first conductive column (5); the end of the second wire (13) is connected with three branch wires B (36) in parallel, the three branch wires B (36) penetrate through the top wall of the three insulation pipes B (24) respectively and are connected with the corresponding second conductive columns (10) respectively, and the end of the second wire (13) is also connected with the branch wire C (37) in parallel, the branch wire C (37) penetrates through the top wall of the insulation pipe C (31) and is connected with the third conductive column (33).

2. The device for removing burrs in aluminum alloy parts based on electric spark machining according to claim 1, characterized in that: The bottom wall of the groove (3) is fixed with the stop valve communicated therewith.

3. The device for removing burrs in aluminum alloy parts based on electric spark machining according to claim 2, characterized in that: The sink groove (16) matches the outer contour of the transverse aluminum alloy pipe (1) of the aluminum alloy piece.

4. The device for removing burrs in aluminum alloy parts based on electric spark machining according to claim 3, characterized in that: A guide sleeve (34) is fixed on the top surface of the floating plate (19) and is slidably sleeved on the guide column (18).

5. The device for removing burrs in aluminum alloy parts based on electric spark machining according to claim 4, characterized in that: A sealing ring is installed between the piston rod of the circulating cylinder (14) and the right side wall of the groove body (3).

6. The device for removing burrs in an aluminum alloy part based on electric spark machining according to claim 5, characterized in that: A sealing filling layer is connected between the first wire (12) and the bottom wall of the groove body (3), between the branch wire B (36) and the top wall of the insulating pipe B (24), and between the branch wire C (37) and the top wall of the insulating pipe C (31).

7. The device for removing burrs in aluminum alloy parts based on electrical discharge machining according to claim 6, characterized in that: The deburring device further comprises a controller electrically connected with the circulating cylinder (14), the feeding cylinder (27) and the stop valve through signal lines.

8. A method for removing burrs in an aluminum alloy part based on electrical discharge machining, using the burr removing device for removing burrs in an aluminum alloy part based on electrical discharge machining according to claim 7, characterized in that: It comprises the following steps: S1, the worker puts on the insulating gloves, and then takes out an aluminum alloy piece to be deburred; S2, the transverse aluminum alloy pipe (1) of the aluminum alloy piece is placed into the sink groove (16) of the plastic positioning seat (15) of the positioning and circulating assembly, since the sink groove (16) matches the outer contour of the transverse aluminum alloy pipe (1) of the aluminum alloy piece, the positioning of the aluminum alloy piece is realized; after the aluminum alloy piece is positioned, the working liquid in the groove body (3) enters the inner cavities of the transverse aluminum alloy pipe (1) and the three vertical aluminum alloy pipes (2), and the working liquid fills the inner cavities of the transverse aluminum alloy pipe (1) and the vertical aluminum alloy pipes (2); S3, the piston rod of the circulating cylinder (14) of the positioning and circulating assembly is controlled to stretch out to the left, the piston rod drives the plastic positioning seat (15) to move to the left, the plastic positioning seat (15) drives the aluminum alloy piece and the first conductive column (5) to move synchronously to the left, when the piston rod of the circulating cylinder (14) is fully stretched out, the aluminum alloy piece enters the deburring station, at this time, the three vertical aluminum alloy pipes (2) of the aluminum alloy piece are respectively located directly above the top ports of the three working electrodes B (25), and the left port of the transverse aluminum alloy pipe (1) of the aluminum alloy piece is located to the right of the working electrode C (32); S4, the worker turns on the pulse power supply P (35), the pulse power supply P (35) supplies power to the first conductive column (5) through the first wire (12), the first conductive column (5) conducts current to the transverse aluminum alloy pipe (1), and the transverse aluminum alloy pipe (1) conducts current to the three vertical aluminum alloy pipes (2); At the same time, the pulse power supply P (35) supplies power to the three branch wires B (36) through the second wire (13), the three branch wires B (36) supply power to the three second conductive columns (10) respectively, and the second conductive columns (10) conduct current to the working electrodes B (25); At the same time, the pulse power supply P also supplies power to a branch wire C (37) through the second wire (13), the branch wire C (37) supplies power to the third conductive column (33), and the third conductive column (33) conducts current to the working electrode C (32); At the same time, the pulse power supply P also supplies power to a branch wire C (37) through the second wire (13), the branch wire C (37) supplies power to the third conductive column (33), and the third conductive column (33) conducts current to the working electrode C (32); S5, the piston rod of the feeding cylinder (27) is controlled to stretch out to the right, the piston rod drives the movable plate (28) to make linear motion to the right, the movable plate (28) drives the horizontal plate (29), the rack (30) and the insulating tube C (31) to make linear motion to the right at the same time, wherein the insulating tube C (31) drives the working electrode C (32) to move towards the left port of the horizontal aluminum alloy pipe (1); At the same time, the rack (30) drives the gear (20) to rotate clockwise around the rotating shaft, the gear (20) drives the fixed bar (21) to rotate synchronously, the fixed bar (21) drives the connecting rod (23) to rotate downward, the connecting rod (23) drives the floating plate (19) to move downward along the guide column (18), the floating plate (19) drives the three insulating tubes B (24) to move downward at the same time, the insulating tube B (24) drives the working electrode B (25) to move towards the top port of the vertical aluminum alloy pipe (2); S6, as the piston rod of the feeding cylinder (27) continues to stretch out to the right, the working electrode C (32) is initially inserted into the left port of the horizontal aluminum alloy pipe (1) of the aluminum alloy piece, and pulse electric sparks are emitted from the four corners of the working electrode C (32) to begin melting the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe (1); at the same time, the three working electrodes B (25) are initially inserted into the top ports of the three vertical aluminum alloy pipes (2) of the aluminum alloy piece respectively, and pulse electric sparks are emitted from the four corners of the working electrode B (25) to begin melting the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe (2); S7, as the piston rod of the feeding cylinder (27) continues to stretch out to the right, the working electrode C (32) gradually moves to the right in the horizontal aluminum alloy pipe (1), and in the moving process, the working electrode C (32) gradually removes the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe (1); at the same time, the working electrode B (25) gradually moves downward in the vertical aluminum alloy pipe (2), and in the moving process, the working electrode B (25) gradually removes the burrs at the four corners in the inner cavity of the vertical aluminum alloy pipe (2); S8, when the piston rod of the feeding cylinder (27) is fully stretched out, the working electrode C (32) is just moved into the right port of the horizontal aluminum alloy pipe (1), thereby completely removing the burrs at the four corners in the inner cavity of the horizontal aluminum alloy pipe (1); At the same time, the three working electrodes C (32) are respectively just moved into the bottom ports of the three vertical aluminum alloy pipes (2) respectively, thereby completely removing the burrs at the four corners in the inner cavities of the three vertical aluminum alloy pipes (2), thereby finally realizing the removal of all the burrs in the first aluminum alloy piece, and further obtaining an aluminum alloy piece without burrs in the inner cavity; S9, the aluminum alloy piece without burrs is taken away, and the specific operation steps are as follows: S91, the worker turns off the pulse power supply P (35); S92, control the piston rod of the feeding cylinder (27) to retract leftward, the piston rod brings the movable plate (28) to move linearly leftward, the movable plate (28) drives the horizontal plate (29), the rack (30) and the insulating tube C (31) to move linearly leftward simultaneously, wherein the insulating tube C (31) drives the working electrode C (32) to gradually exit from the inner cavity of the horizontal aluminum alloy tube (1) leftward; At the same time, the rack (30) drives the gear (20) to rotate counterclockwise around the rotating shaft, drives the fixed bar (21) and the connecting rod (23) to rotate upward, the connecting rod (23) drives the floating plate (19) to move upward along the guide column (18), the floating plate (19) drives the three insulating tubes B (24) to move upward simultaneously, the insulating tube B (24) drives the working electrode B (25) to gradually exit from the inner cavity of the vertical aluminum alloy tube (2) upward; S93, when the piston rod of the feeding cylinder (27) is completely retracted, the insulating tube C (31) and the working electrode C (32) move to the initial position, at the same time, the three insulating tubes B (24) and the three working electrodes B (25) move to the initial position; S94, control the piston rod of the week transition cylinder (14) to retract rightward, the piston rod drives the plastic positioning seat (15) to move rightward, the plastic positioning seat (15) drives the aluminum alloy piece without burr to move rightward; when the piston rod of the week transition cylinder (14) is completely retracted, the plastic positioning seat (15) moves to the initial position, at this time, the worker can take out the aluminum alloy piece without burr from the groove body (3); S10, the worker repeats the operation of steps S2~S9 multiple times, and the burrs in the inner cavities of multiple aluminum alloy pieces can be removed.

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