CN210172736U

CN210172736U - Four-shaft driving device of electrolytic machining tool

Info

Publication number: CN210172736U
Application number: CN201920500619.7U
Authority: CN
Inventors: 蔡晶; 张再余; 蔡国庆
Original assignee: Nanjing Ningqing CNC Machine Tool Manufacture Co Ltd
Current assignee: Nanjing Ningqing CNC Machine Tool Manufacture Co Ltd
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-03-24
Anticipated expiration: 2029-04-12

Abstract

The utility model discloses an electrolytic machine tool's four-axis drive arrangement uses in the electrolytic machine tool field, and its technical scheme main points are: the machining tool comprises a machine tool, a bearing table and a tool bit, wherein the bearing table and the tool bit are arranged on the machine tool and used for placing a workpiece, a fourth motor used for driving the bearing table to rotate is arranged on the machine tool, and a driving mechanism used for driving the tool bit to move along three axes X, Y, Z is arranged on the machine tool; the driving mechanism comprises a first sliding frame, a second sliding frame, a vertical frame, a first motor, a second motor and a third motor; has the technical effects that: the fourth motor can drive the bearing platform to rotate, and the tool bit rotates around the workpiece to be machined at the moment, so that the circular workpiece to be machined can be conveniently and quickly subjected to electrolytic cutting.

Description

Four-shaft driving device of electrolytic machining tool

Technical Field

The utility model relates to an electrolytic machining machine tool field, in particular to four-axis driving device of an electrolytic machining tool.

Background

An electrolytic machining machine tool is a special machining method for machining and shaping a workpiece by utilizing the principle that metal generates electrochemical anode dissolution in electrolyte.

Chinese patent No. CN202097473U discloses an electrolytic machining tool, which comprises a power supply, an electrolyte system device, an electrolytic machining system device and a control system device, wherein the electrolytic machining system device comprises: a frame; the C-shaped working platform is arranged on the rack and comprises a lower working platform, an upper plate and a vertical wall; the jig upper die mounting plate can be vertically moved and is mounted in the C-shaped working platform; a plurality of guide rod assemblies which are arranged on the upper plate and connected to the jig upper die mounting plate; the power assembly is arranged on the upper plate and is used for driving the guide rod assembly; the slide rail is connected with the jig upper die mounting plate, and the jig upper die mounting plate slides up and down along the slide rail; the screw rod is used for driving the upper die mounting plate of the jig; and the counterweight device is arranged on the upper plate.

However, this type of electrochemical machining tool is a substantially three-axis motion machine tool, and machining efficiency and accuracy are not high enough when machining a circular workpiece.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electrolytic machine tool's four-axis drive arrangement, its advantage is: can conveniently and quickly carry out electrolytic cutting on the round workpiece to be machined.

The above technical purpose of the present invention can be achieved by the following technical solutions: a four-axis driving device of an electrolytic machining tool comprises a machine tool, a bearing table and a tool bit, wherein the bearing table and the tool bit are arranged on the machine tool and used for placing a workpiece, a fourth motor used for driving the bearing table to rotate is arranged on the machine tool, and a driving mechanism used for driving the tool bit to move along X, Y, Z three axes is arranged on the machine tool; a driving mechanism: including first balladeur train, second balladeur train, grudging post, first motor, second motor and third motor, first balladeur train slides along the Y axle and connects on the lathe, the second balladeur train slides along the X axle and connects on first balladeur train, the grudging post sets up on the second balladeur train, the tool bit is located the grudging post, first motor sets up and removes through the first balladeur train of first lead screw drive on the lathe, the second motor sets up on first balladeur train and removes through second lead screw drive second balladeur train, the third motor sets up on the grudging post and removes along Z axle direction through third lead screw drive tool bit.

Through the technical scheme, an operator firstly places a circular workpiece to be machined on a bearing table, then drives the tool bit to move along the Y axis through the first motor, drives the tool bit to move along the X axis through the second motor, drives the tool bit to move along the Z axis through the third motor until the tool bit moves to the outer edge of the workpiece to be machined, and then drives the bearing table to rotate through the fourth motor, at the moment, the tool bit can equivalently rotate around the workpiece to be machined, so that the circular workpiece to be machined can be conveniently and quickly subjected to electrolytic cutting; when a polygonal workpiece is machined, the tool bit moves linearly through the driving mechanism.

The utility model discloses further set up to: still be equipped with the reduction gear on the lathe, the fourth motor links to each other with the reduction gear, the reduction gear links to each other with the plummer.

Through above-mentioned technical scheme, the reduction gear can reduce the rotational speed of plummer, improve the torsion of plummer to be convenient for drive the great machined part of treating of weight, reduce the possibility that the fourth motor burns out because of the drive power is not enough.

The utility model discloses further set up to: and a sink groove for placing the fourth motor and the speed reducer is formed in the bottom of the machine tool.

Through above-mentioned technical scheme, fourth motor and reduction gear can be accomodate to the heavy groove to the occupation space of fourth motor and reduction gear has been reduced.

The utility model discloses further set up to: the electric slip ring is connected to the speed reducer, a plurality of supporting pieces are arranged at the bottom of the machine tool, and the supporting pieces abut against one end, far away from the bearing table, of the electric slip ring.

Through above-mentioned technical scheme, the drive power of transmission reduction gear that the electric sliding ring can be stable, and the backing sheet can play a bearing effect to the electric sliding ring of reduction gear to support the electric sliding ring tightly on the lathe, reduce the electric sliding ring and produce the possibility in clearance under the effect of self gravity between the lathe, improve the leakproofness between electric sliding ring and the lathe, and then reduce the possibility that electrolyte flows out the lathe.

The utility model discloses further set up to: a first grating ruler is arranged on the machine tool along the moving direction of the first sliding frame, a first induction reading head extending to the first grating ruler is arranged on the first sliding frame, and a gap is formed between the first induction reading head and the first grating ruler.

Through the technical scheme, when the first sliding frame moves, the first grating ruler and the first induction reading head can detect the moving distance of the first sliding frame, so that the moving precision of the first sliding frame is improved.

The utility model discloses further set up to: and a second grating ruler is arranged on the first sliding frame along the moving direction of the second sliding frame, a second induction reading head extending to the second grating ruler is arranged on the second sliding frame, and a gap is formed between the second induction reading head and the second grating ruler.

Through the technical scheme, when the second sliding frame moves, the second grating ruler and the second induction reading head can detect the moving distance of the second sliding frame, so that the moving precision of the second sliding frame is improved.

The utility model discloses further set up to: the inner bottom of the machine tool is provided with an inclined plane, the lowest end of the inclined plane of the machine tool is provided with a liquid outlet, and the machine tool is provided with a square-rotating circular tube at the liquid outlet.

Through the technical scheme, the electrolyte can flow to the liquid outlet along the inclined plane and then is discharged through the liquid outlet, so that the electrolyte is rapidly discharged from the machine tool; the liquid discharge opening adopts a square-to-round design, firstly, the bottom area of the square opening is large, so that electrolyte can be conveniently and quickly discharged along the square opening, and the round opening is convenient for an operator to connect the electrolyte with an external pipeline, so that the connection universality is improved.

To sum up, the utility model discloses following beneficial effect has:

1. the fourth motor can drive the bearing platform to rotate, and the tool bit can rotate around the workpiece to be machined, so that the circular workpiece to be machined can be conveniently and quickly subjected to electrolytic cutting;

2. electrolyte can flow to the liquid outlet along the inclined plane and then is discharged through the liquid outlet, so that the electrolyte is rapidly discharged from the machine tool, and adverse effects of electrolyte deposition on processing are reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural diagram of the present embodiment for embodying a square-to-round tube.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Fig. 5 is an enlarged view of a portion C in fig. 2.

Fig. 6 is a schematic structural diagram for embodying the sink in this embodiment.

Fig. 7 is a schematic structural diagram for embodying the carrier table in this embodiment.

Fig. 8 is an enlarged view of a portion D in fig. 7.

Fig. 9 is a schematic structural diagram for embodying the ram of the present embodiment.

Fig. 10 is a schematic structural diagram for embodying the Z-shaped plate in the present embodiment.

Fig. 11 is a schematic structural diagram of the positioning sleeve according to the embodiment.

Fig. 12 is an enlarged view of a portion E in fig. 11.

Reference numerals: 1. a machine tool; 11. a bearing table; 12. a cutter head; 13. a fourth motor; 14. a speed reducer; 142. an electrical slip ring; 1420. a lower drive shaft; 15. sinking a groove; 16. a support sheet; 17. a bevel; 18. a liquid discharge port; 19. square rotation of a round pipe; 10. a workpiece; 2. a drive mechanism; 21. a first carriage; 22. a second carriage; 23. erecting a frame; 24. a first motor; 241. a first lead screw; 25. a second motor; 251. a second lead screw; 26. a third motor; 261. a third screw rod; 3. a first grating scale; 31. a first inductive read head; 32. a second grating scale; 34. a second inductive read head; 35. a third inductive read head; 36. a third grating scale; 4. a protective cylinder; 41. air holes; 42. pressing and edge extension; 43. an annular gas containing groove; 44. a gas guide groove; 5. a positioning core; 51. locking the nut; 52. a contact block; 53. rotating the disc; 54. an insulating disk; 55. an insulating cylinder; 56. a bolt; 57. a T-shaped slot; 6. a ram; 61. a main shaft; 62. a water slip ring; 621. a liquid inlet; 63. a flow channel; 64. fixing the rod; 65. a fixing ring; 651. a threaded hole; 66. fixing the screw rod; 67. a conductive slip ring; 68. a wiring terminal; 681. a wiring hole; 7. a Z-shaped plate; 71. a waist-shaped groove; 72. connecting holes; 73. adjusting the screw rod; 74. an annular fixed plate; 8. a main spindle box; 80. positioning and extending edges; 81. a shaft passing hole; 82. an insulating sleeve; 821. insulating and extending edges; 83. insulating a straight pipe; 84. a stainless steel screw; 85. a contact part; 86. folding the waterproof rubber; 87. connecting sheets; 88. and (4) radiating strip holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): an electrolytic machining machine tool, as shown in fig. 1 and fig. 2, comprises a machine tool 1, a bearing table 11 and a tool bit 12 (as shown in fig. 9) which are arranged on the machine tool 1 and used for placing a workpiece 10, wherein the machine tool 1 is provided with a driving mechanism 2 used for driving the tool bit 12 to move along three axes X, Y, Z, the driving mechanism 2 comprises a first sliding frame 21, a second sliding frame 22, a vertical frame 23, a first motor 24, a second motor 25 and a third motor 26, the first sliding frame 21 is connected on the machine tool 1 in a sliding way along a Y axis, the second sliding frame 22 is connected on the first sliding frame 21 in a sliding way along an X axis, the vertical frame 23 is fixedly connected on the second sliding frame 22, a sliding pillow 6 is connected in the vertical frame 23 in a sliding way along a Z axis, the tool bit 12 is connected in the sliding pillow 6, the first motor 24 is arranged on the machine tool 1 and drives the first sliding frame 21 to move through a first screw rod 241 which is connected on the first sliding frame 21 in a thread way, the second motor 25 is arranged on, the third motor 26 is arranged on the stand 23 and drives the cutter head 12 to move along the Z-axis direction through a third screw 261 (not shown in the figure) which is in threaded connection with the ram 6, and at the moment, the cutter head 12 can be driven to move along the X, Y, Z three axes conveniently and quickly through the linkage of the first motor 24, the second motor 25 and the third motor 26.

As shown in fig. 2, 3, 4 and 5, a first grating scale 3 is fixedly arranged on the machine tool 1 along the moving direction of the first carriage 21, a first induction reading head 31 extending to the first grating scale 3 is arranged on the first carriage 21, and a gap is formed between the first induction reading head 31 and the first grating scale 3; a second grating ruler 32 is fixedly arranged on the first sliding frame 21 along the moving direction of the second sliding frame 22, a second induction reading head 34 extending to the second grating ruler 32 is arranged on the second sliding frame 22, and a gap is formed between the second induction reading head 34 and the second grating ruler 32; the second carriage 22 is connected with a third inductive reading head 35, the ram 6 is connected with a third grating ruler 36 along the vertical direction, and a gap is formed between the third inductive reading head 35 and the third grating ruler 36. When the first carriage 21 moves, the first inductive reading head 31 and the first grating ruler 3 can detect the moving distance of the first carriage 21, thereby improving the moving accuracy of the first carriage 21. Similarly, the second inductive reading head 34 and the second grating 32 can also detect the moving distance of the second carriage 22, and the third inductive reading head 35 and the third grating 36 can detect the moving distance of the ram 6.

Referring to fig. 7 and 8, a rotating disc 53 is rotatably connected to the machine tool 1, an insulating disc 54 is arranged between the rotating disc 53 and the bearing table 11, an insulating cylinder 55 penetrating through the insulating disc 54 is arranged on the bearing table 11 in a penetrating manner, a plurality of insulating cylinders 55 are arrayed along the circumference of the rotating disc 53, bolts 56 are arranged in the insulating cylinder 55 in a penetrating manner, when the rotating disc 53 and the insulating disc 54 need to be connected, an operator penetrates the bolts 56 through the insulating cylinder 55 and is in threaded connection with the rotating disc 53, and at the moment, one end, far away from the insulating cylinder 55, of each bolt 56 abuts against the end of the corresponding insulating cylinder 55 and is not in contact with the bearing table 11, so that the rotating disc 53 and the rotating disc 53 are quickly and fixedly connected, the insulating disc 54 is fixedly arranged on the bearing table 11, and the rotating disc 53 can drive the.

Referring to fig. 6 and 7, the bottom of the machine tool 1 is provided with a fourth motor 13 and a speed reducer 14, the bottom of the machine tool 1 is provided with a sink 15 for placing the fourth motor 13 and the speed reducer 14, the fourth motor 13 is connected with the speed reducer 14, and the speed reducer 14 is connected with the rotating disc 53 through the electric slip ring 142 and a lower driving shaft 1420 on the electric slip ring 142, so that when the fourth motor 13 works, the lower driving shaft 1420 can drive the bearing table 11 to rotate. When the circular workpiece 10 needs to be machined, the driving mechanism 2 moves the tool bit 12 (as shown in fig. 9) to the outer edge of the workpiece 10 to be machined, and then the fourth motor 13 drives the bearing table 11 to rotate, so that the tool bit 12 equivalently rotates around the workpiece 10 to be machined, and the circular workpiece 10 to be machined is conveniently and quickly subjected to electrolytic cutting; when the polygonal workpiece 10 is machined, the tool bit 12 is moved linearly by the driving mechanism 2.

As shown in fig. 6 and 7, the bottom of the machine tool 1 is provided with three support sheets 16, the three support sheets 16 all abut against one end, away from the plummer 11, of the electrical slip ring 142 connected to the speed reducer 14, and the three support sheets 16 abut against the electrical slip ring 142 on the bottom of the machine tool 1, so that the electrical slip ring 142 can be supported, the possibility of generating a gap between the electrical slip ring 142 and the machine tool 1 under the action of self gravity can be reduced, the sealing stability between the speed reducer 14 and the bottom of the machine tool 1 can be improved, the sealing capability between the speed reducer 14 and the machine tool 1 can be improved, and the possibility of the electrolyte flowing out of the machine tool 1 can be.

As shown in fig. 2, the inner bottom of the machine tool 1 is provided with an inclined surface 17, so that the electrolyte can flow to the lower part along the inclined surface 17, the lowest end of the inclined surface 17 of the machine tool 1 is provided with a liquid discharge port 18, the electrolyte can be discharged out of the machine tool 1 through the liquid discharge port 18 when flowing to the lowest part of the inclined surface 17, the machine tool 1 is provided with a square-rotating circular tube 19 at the liquid discharge port 18, the electrolyte can be rapidly discharged along the square port due to the large area of the bottom of the square port, and the round port is convenient for an operator to connect the machine tool with an external pipeline, so.

As shown in fig. 7, the machine tool 1 is provided with the protection tube 4 along the periphery of the bearing table 11, one end of the bearing table 11 close to the workpiece 10 is provided with an air compressing and extending edge 42, the air compressing and extending edge 42 extends out of the periphery of the top of the protection tube 4, the bottom of the protection tube 4 is fixedly connected to the machine tool 1, the bottom of the machine tool 1 is provided with an air hole 41 between the bearing table 11 and the protection tube 4, the air hole 41 is connected with an external air source (not shown in the figure), when the air flows out of the air hole 41, the air flows over from the periphery of the top of the protection tube 4 and forms a circle of annular positive pressure air flow with the air compressing and extending edge 42, so that the protection tube 4 is isolated from the electrolyte mist, the possibility of contact between the electrolyte mist and the internal part of the.

As shown in fig. 7, an annular air accommodating groove 43 is provided between the air compressing and expanding edge 42 and the outer edge of the protection barrel 4, the top of the protection barrel 4 is embedded in the annular air accommodating groove 43, a plurality of air guide grooves 44 extending out of the air compressing and expanding edge 42 are provided on the air compressing and expanding edge 42, the air guide grooves 44 are communicated with the annular air accommodating groove 43, and each air guide groove 44 is circumferentially distributed along the periphery of the air compressing and expanding edge 42, and when the air flow is discharged from the air hole 41, the air flow can impact the top of the protection barrel 4 and form an annular positive pressure air flow. At this time, the annular air accommodating groove 43 can play a role in buffering, accommodating and concentrating the airflow rushed out of the air hole 41, so that the airflow is intensively impacted towards the periphery of the air pressing and extending edge 42, a powerful annular airflow is formed, and the possibility of electrolyte mist entering the protective cylinder 4 is reduced; and a part of the air flow can be discharged from the air guide groove 44, and the part of the air flow can flow in the horizontal plane direction, thereby reducing the possibility that the electrolyte mist spreads to the shield cylinder 4.

As shown in fig. 7, in order to clamp the workpiece 10 on the bearing table 11, the positioning core 5 is arranged at the center of the bearing table 11, the positioning core 5 is screwed on the bearing table 11, and an operator can flexibly replace the positioning core 5 with different outer diameters according to the size of the center hole of the workpiece 10. One end of the positioning core 5 far away from the bearing platform 11 is connected with a locking nut 51 through a thread, and the positioning core 5 is further sleeved with a contact block 52. When the workpiece 10 is installed, an operator firstly connects the positioning core 5 on the bearing table 11 in a threaded manner, then sleeves the workpiece 10 on the positioning core 5, at the moment, sleeves the abutting block 52 on the positioning core 5 and places the abutting block on the upper end of the workpiece 10, and finally connects the locking nut 51 on the positioning core 5 in a threaded manner and screws the abutting block 52 tightly on the upper end of the workpiece 10, so that the workpiece 10 is quickly and conveniently clamped, and the possibility of movement generated when the workpiece 10 rotates is reduced.

As shown in fig. 1, four T-shaped grooves 57 are formed in the surface of the carrier 11, the four T-shaped grooves 57 are distributed at equal intervals along the periphery of the carrier 11, and the T-shaped grooves 57 can facilitate an operator to connect other clamps to the carrier 11, so that workpieces 10 of various specifications can be positioned and clamped, and the expandability of the carrier 11 is improved.

As shown in fig. 9, a main shaft 61 is rotatably connected in the ram 6 along the vertical direction, the tool bit 12 is connected at one end of the main shaft 61 facing the plummer 11, a conductive slip ring 67 is arranged at one end of the ram 6 far away from the tool bit 12, the conductive slip ring 67 is composed of a stator and a rotor, and one end of the main shaft 61 far away from the tool bit 12 is fixedly connected to the stator of the conductive slip ring 67 to ensure the rotational stability of the main shaft 61 during operation. A water slip ring 62 is further arranged at one end, away from the tool bit 12, of the main shaft 61, a rotor is arranged on the inner layer of the water slip ring 62, a stator is arranged on the outer layer of the water slip ring 62, the position of the water slip ring 62 is fixed relative to the ram 6, the main shaft 61 is connected to the rotor of the water slip ring 62, a liquid inlet 621 is formed in the stator of the water slip ring 62, a flow channel 63 communicated with the liquid inlet 621 is formed in each of the main shaft 61 and the tool bit 12, electrolyte enters the flow channel 63 from the liquid inlet 621, when the main shaft 61 rotates at a high speed, the electrolyte flows out of the flow channel 63 at a high speed and impacts on the workpiece 10, and is dispersed into electrolyte; moreover, the main shaft 61 is hollow, and electrolyte is supplied to the middle of the main shaft 61, so that the main shaft 61 can be cooled; the waste slag can be taken away by impacting the workpiece 10 after flowing out from the lower end of the hollow cutter head 12. During machining, the tool bit 12 is powered on, and the workpiece 10 is powered on.

As shown in fig. 9 and 10, the side wall of the ram 6 is provided with a Z-shaped plate 7, one end of the Z-shaped plate 7 close to the ram 6 is provided with a plurality of waist-shaped grooves 71, the ram 6 is provided with connecting holes 72 corresponding to the waist-shaped holes, the waist-shaped holes are provided with adjusting screws 73 in threaded connection with the connecting holes 72, an operator can adjust the position of the Z-shaped plate 7 through the waist-shaped holes, and then the Z-shaped plate 7 is rapidly fixed on the ram 6 through the adjusting screws 73. The fixing rod 64 is detachably connected to one end, far away from the ram 6, of the Z-shaped plate 7 through a screw, the fixing ring 65 is fixedly arranged at one end, far away from the Z-shaped plate 7, of the fixing rod 64, and the fixing ring 65 is in interference fit with the outer edge of the stator of the water slip ring 62, so that the position of the water slip ring 62 is quickly fixed, and the possibility of movement of the water slip ring 62 is reduced. The fixing ring 65 is provided with a plurality of threaded holes 651 extending into the water slide ring 62 along the periphery, the threaded holes 651 are in threaded connection with fixing screws 66 (not shown in the figure), the fixing screws 66 can connect the fixing ring 65 with the water slide ring 62, and the possibility that the water slide ring 62 jumps during operation and generates relative displacement with the fixing ring 65 is reduced.

As shown in fig. 10, an annular fixing plate 74 is fixedly connected to the Z-shaped plate 7, an outer edge of the annular fixing plate 74 is flush with an outer edge of the conductive slip ring 67, when the fixing ring 65 is in interference fit with an outer edge of the hydro-slip ring 62, the annular fixing plate 74 abuts against an end of the conductive slip ring 67 away from the ram 6, and at this time, the annular fixing plate 74 has a tightening force on the Z-shaped plate 7, so that the possibility of bending of the Z-shaped plate 7 can be reduced, and the support stability of the fixing rod 64 and the fixing ring 65 is.

As shown in fig. 10, the conducting slip ring 67 is provided with a plurality of wiring terminals 68, the plurality of wiring terminals 68 are uniformly distributed at one end of the conducting slip ring 67 away from the ram 6, each wiring terminal 68 is provided with three wiring holes 681, and an operator can respectively penetrate the cables into the wiring holes 681 of the wiring terminals 68, so that the cables are uniformly distributed, and the possibility that the cables are wound and excessively densely distributed on the conducting slip ring 67 is reduced.

As shown in fig. 11 and 12, in order to insulate the main shaft 61 from the ram 6, so as to avoid the occurrence of a machining accident caused by electrification of the ram 6, both ends of the main shaft 61 are rotatably connected with the spindle box 8 through bearings, both ends of the ram 6 in the vertical direction are provided with shaft holes 81 through which the spindle box 8 passes, an insulating sleeve 82 is arranged in the shaft holes 81, the spindle box 8 is arranged in the insulating sleeve 82 in a penetrating manner, and at this time, the main shaft 61 and the ram 6 are insulated by the insulating sleeve 82. The end of the insulating sleeve 82 is provided with an insulating extending edge 821, the end of the spindle box 8 is provided with a positioning extending edge 80, the positioning extending edge 80 is abutted against the insulating extending edge 821, the positioning extending edge 80 is provided with an insulating straight pipe 83 penetrating through the positioning extending edge 80, one end of the insulating straight pipe 83 far away from the insulating sleeve 82 extends out of the positioning extending edge 80 and is provided with an abutting part 85, a stainless steel screw 84 in threaded connection with the ram 6 is arranged in the insulating straight pipe 83 in a penetrating manner, an operator can screw the stainless steel screw 84 on the ram 6, the end of the stainless steel screw 84 is abutted against the abutting part 85 at the moment, the rod part is connected with the ram 6, thereby the spindle box 8 can be quickly and conveniently screwed on the ram 6, one side of the interference part 85 facing the positioning extending edge 80 is in interference with the positioning extending edge 80, therefore, the positioning extending edge 80 can be tightly abutted against the insulating sleeve 82, the gap between the positioning extending edge 80 and the insulating sleeve 82 is reduced, and the waterproof sealing performance between the spindle box 8 and the insulating sleeve 82 is improved.

As shown in fig. 11 and 12, a folding waterproof rubber sheet 86 is arranged between the end of the ram 6 facing the tool bit 12 and the bottom of the second carriage 22, connecting sheets 87 are fixedly arranged at two ends of the folding waterproof rubber sheet 86, the two connecting sheets 87 are detachably connected to the second carriage 22 and the ram 6 through screws, so that an operator can replace the folding waterproof rubber sheet 86 at any time, the folding waterproof rubber sheet 86 can reduce the gap between the ram 6 and the second carriage 22, the possibility that electrolyte mist extends into the ram 6 is reduced, the insulation property inside the ram 6 is maintained, and potential safety hazards are reduced.

As shown in fig. 9, the ram 6 is provided with a plurality of heat dissipating holes 88 to increase the contact area between the main shaft 61 and the outside air, so as to increase the heat dissipating speed of the main shaft 61, so as to rapidly reduce the temperature of the main shaft 61, reduce the possibility that the main shaft 61 is overheated to affect the atomization degree of the electrolyte mist, and improve the working stability of the main shaft 61.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides an electrolytic machine tool's four-axis drive arrangement, includes lathe (1), sets up plummer (11) and tool bit (12) that are used for placing work piece (10) on lathe (1), its characterized in that: a fourth motor (13) for driving the bearing table (11) to rotate is arranged on the machine tool (1), and a driving mechanism (2) for driving the tool bit (12) to move along three axes X, Y, Z is arranged on the machine tool (1);

drive mechanism (2): comprises a first sliding frame (21), a second sliding frame (22), a stand (23), a first motor (24), a second motor (25) and a third motor (26), the first sliding frame (21) is connected to the machine tool (1) in a sliding way along the Y axis, the second sliding frame (22) is connected to the first sliding frame (21) in a sliding way along the X axis, the stand (23) is arranged on the second sliding frame (22), the cutter head (12) is positioned in the stand (23), the first motor (24) is arranged on the machine tool (1) and drives the first sliding frame (21) to move through a first screw rod (241), the second motor (25) is arranged on the first sliding frame (21) and drives the second sliding frame (22) to move through a second screw rod (251), the third motor (26) is arranged on the stand (23) and drives the cutter head (12) to move along the Z-axis direction through a third screw rod (261).

2. The four-axis drive device of an electrolytic machine tool according to claim 1, wherein: still be equipped with reduction gear (14) on lathe (1), fourth motor (13) link to each other with reduction gear (14), reduction gear (14) link to each other with plummer (11).

3. The four-axis drive device for an electrolytic machine tool according to claim 2, wherein: and a sink groove (15) for placing a fourth motor (13) and a speed reducer (14) is formed in the bottom of the machine tool (1).

4. The four-axis drive of an electrolytic machine tool as set forth in claim 3, wherein: the electric slip ring (142) is connected to the speed reducer (14), a plurality of supporting pieces (16) are arranged at the bottom of the machine tool (1), and the supporting pieces (16) are abutted to one end, far away from the bearing table (11), of the electric slip ring (142).

5. The four-axis drive apparatus of an electrolytic machine tool according to claim 1 or 4, wherein: a first grating ruler (3) is arranged on the machine tool (1) along the moving direction of the first sliding frame (21), a first induction reading head (31) extending to the first grating ruler (3) is arranged on the first sliding frame (21), and a gap is formed between the first induction reading head (31) and the first grating ruler (3).

6. The four-axis drive apparatus of an electrolytic machine tool according to claim 1 or 4, wherein: a second grating ruler (32) is arranged on the first sliding frame (21) along the moving direction of the second sliding frame (22), a second induction reading head (34) extending to the second grating ruler (32) is arranged on the second sliding frame (22), and a gap is formed between the second induction reading head (34) and the second grating ruler (32).

7. The four-axis drive of an electrolytic machine tool as set forth in claim 6, wherein: the inner bottom of the machine tool (1) is provided with an inclined surface (17), the lowest end of the inclined surface (17) of the machine tool (1) is provided with a liquid discharge port (18), and the position of the liquid discharge port (18) of the machine tool (1) is provided with a square-turn round pipe (19).