CN218284041U - A spark-erosion wire cutting machine bed for processing disk porous part - Google Patents

Abstract

The utility model discloses an electric spark wire-electrode cutting machine tool for processing disk-shaped porous parts, which comprises a workbench, a central upright post, a rotating device, a plurality of wire frame components and a wire feeding mechanism; the plurality of wire frame assemblies are radially and radially distributed around the center of the workbench, and each wire frame assembly comprises a bottom plate, a radial driving mechanism arranged on the bottom plate and a wire frame fixed on a sliding block of the radial driving mechanism; the thread frame is a [ -shaped frame, and an opening of the [ -shaped frame faces the central upright post; the wire moving mechanism comprises a first guide wheel assembly arranged on the workbench, a second guide wheel assembly arranged on the radial driving mechanism and the wire frame, a third guide wheel assembly arranged on the central upright post and a fourth guide wheel assembly arranged between the two wire frame assemblies. The wire cut electric discharge machine tool can not only realize the hole machining of two-dimensional shapes in disc-shaped parts, but also realize the synchronous machining of a plurality of holes, and greatly improves the machining efficiency.

Description

A spark-erosion wire cutting machine bed for processing porous part of disk

Technical Field

The utility model relates to a spark-erosion wire cutting process technical field, concretely relates to spark-erosion wire cutting machine bed for processing porous part of disk.

Background

In the wire cut electrical discharge machining, an electric field between two electrodes breaks down working fluid to form a discharge channel, and instantaneous high-temperature melting and material evaporation corrosion are generated to achieve the purpose of cutting. The wire cut electrical discharge machining is non-contact machining, has no macroscopic acting force, is not influenced by the hardness and the strength of materials, and is widely applied to the fields of dies, engineering machinery, aerospace and the like.

When a plurality of irregular through holes are distributed on a disc-shaped porous part to be machined, the traditional method adopts a traditional wire cut electrical discharge machine to cut hole by hole, and the efficiency is very low.

In the prior art, in order to improve cutting efficiency, a plurality of wire cutting stations are provided, for example, the invention patent application with the application publication number of CN104002001A discloses a monofilament multi-wire bit line cutting machine tool which cuts a ring-shaped part into a plurality of pieces by driving a plurality of independent wire frames to feed radially. However, all the wire frames of the machine tool are radially arranged inside the annular workpiece, and the wire frames cut from inside to outside along the radial direction, so that the machine tool can only perform one-dimensional linear cutting, and cannot machine two-dimensional special-shaped holes on the disc-shaped part. For this purpose, a wire-cut electric discharge machine for machining a disc-shaped porous part is proposed to realize synchronous hole machining of the disc-shaped porous part.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that above-mentioned exists, provide a spark-erosion wire cutting machine bed for processing porous part of disk, this spark-erosion wire cutting machine bed not only can realize the spot facing work of two-dimensional shape in the disk part, can also realize a plurality of holes synchronous processing, very big improvement machining efficiency.

The purpose of the utility model is realized through the following technical scheme:

a wire cut electric discharge machine for processing disk-shaped porous parts comprises a workbench, a central upright column arranged in the middle of the workbench, a rotating device for driving the disk-shaped porous parts to rotate, a plurality of wire frame assemblies for processing arranged on the workbench and a wire moving mechanism for guiding the trend of electrode wires; a plurality of the wire frame components are radially distributed around the center of the workbench, wherein,

the wire frame assembly comprises a bottom plate, a radial driving mechanism arranged on the bottom plate and a wire frame fixed on a sliding block of the radial driving mechanism; wherein the filament frame is a [ -shaped frame, and an opening of the [ -shaped frame faces the central upright post;

the wire moving mechanism comprises a first guide wheel component arranged on the workbench and used for guiding the electrode wire to enter and exit the wire winding drum, a second guide wheel component arranged on the radial driving mechanism and the wire frame, a third guide wheel component arranged on the central upright post and a fourth guide wheel component arranged between the two wire frame components; and the electrode wire passes through the rest second guide wheel assemblies in sequence under the guidance of the third guide wheel assembly and the fourth guide wheel assembly after coming out of the wire winding drum and passing through the first guide wheel assembly, and finally returns to the wire winding drum through the first guide wheel assembly.

The working principle of the wire-cut electric discharge machine for machining the disc-shaped porous part is as follows:

when a disc-shaped porous part needs to be machined, a central hole of the part is sleeved into a central upright post and placed on a rotary device, the part can be centered and positioned through a conical guide centering block, then wire feeding of a wire electrode is carried out, the wire electrode coming out of a wire winding drum is guided through a first guide wheel assembly and then enters a second guide wheel assembly, and the wire electrode finally passes through second guide wheel assemblies on wire frames under the guidance of a third guide wheel assembly and a fourth guide wheel assembly and finally returns to the wire winding drum through the first guide wheel assembly; after the wire feeding process is finished, processing the part, driving the part to rotate by the rotating device, driving the wire frame to feed in the radial direction by the radial driving mechanism, and driving the radial feeding of the wire electrode and the rotating motion of the part by the wire frame to finish the processing of a two-dimensional hole; a plurality of wire frame assemblies are fed simultaneously, and the cooperative parts rotate, so that a plurality of holes can be synchronously machined.

The utility model discloses a preferred scheme, wherein, slewer's middle part is hollow structure, the center pillar is followed slewer's hollow structure wears out. The purpose is to make the structure of the turning device more compact and to facilitate the turning device to drive the disk-shaped porous part to rotate.

Preferably, the rotating device is provided with a conical guide centering block for positioning the disc-shaped porous part. By arranging the conical guide centering block, the disk-shaped porous part and the rotating device are coaxial and are not eccentric, and the processing precision is ensured.

Preferably, the wire frame comprises a vertical arm, an upper arm connected to the upper end of the vertical arm and a lower arm connected to the lower end of the vertical arm; wherein the second guide wheel assembly comprises a guide wheel arranged above the radial driving mechanism, an upper guide wheel arranged at the end part of the upper arm and a lower guide wheel arranged at the end part of the lower arm; each wire frame component is provided with the second guide wheel component. In the structure, the wire electrode can sequentially pass through the guide wheel, the lower guide wheel and the upper guide wheel; or sequentially passes through the upper guide wheel, the lower guide wheel and the guide wheel; the specific wire moving direction is determined according to the actual processing mode; and the electrode wire between the upper guide wheel and the lower guide wheel is used for realizing the cutting and processing of the part.

Preferably, each wire frame component can rotate around the center of the workbench and is used for adjusting the included angle between two adjacent wire frame components. In the structure, the thread frame component can rotate around the workbench, so that different positions of the thread frame component on the workbench can be adjusted, and flexible processing of the disc-shaped porous part can be realized.

Preferably, the number of the wire frame assemblies is six, and the six wire frame assemblies respectively correspond to six stations, namely a station A, a station B, a station C, a station D, a station E and a station F. Through reasonable adjustment of the position of the screw frame, the processing of two holes, three holes, four holes or five holes can be realized.

Preferably, the third idler assembly includes a first set of steerable idlers, a second set of steerable idlers, and a third set of steerable idlers; the first guide wheel assembly comprises a wire inlet guide wheel and a wire outlet guide wheel; the fourth idler assembly includes a first tensioning idler and a second tensioning idler.

Preferably, when six evenly distributed holes are machined, the included angle between two adjacent stations is 60 degrees, and the specific wire traveling path of the wire electrode is as follows:

the electrode wire is discharged from the wire winding drum, passes through the wire feeding guide wheel to reach the guide wheel in the station A, then turns to reach the lower guide wheel in the station A, then upwards runs through the upper guide wheel in the station A, enters the first group of turning guide wheels on the central upright post, is guided by the first group of turning guide wheels, enters the upper guide wheel in the station B, downwards runs through the lower guide wheel in the station B, and then passes through the guide wheel in the station B; the electrode wire enters the upper guide wheel in the station F, goes downwards through the lower guide wheel in the station F, passes through the third group of steering guide wheels, and finally returns to the wire winding drum through the wire outlet guide wheel. In the structure, the third guide wheel assembly and the fourth guide wheel assembly can change the direction of the electrode wire and guide the electrode wire to enter the wire frame assemblies in different stations; the fourth guide wheel assembly can also play a role in tensioning the electrode wire, and machining precision is improved.

Preferably, when uniformly distributed five-hole machining is carried out, the wire frame assembly in the station F is in an inoperative state, the wire frame assemblies in the other stations are in an operative state, wherein an included angle between two adjacent stations in the operative state is 72 degrees, the second guide wheel assembly (12) on the wire frame assembly in the station F further comprises an upper auxiliary guide wheel (51) arranged at the upper end of the vertical arm and a lower auxiliary guide wheel (52) arranged at the lower end of the vertical arm; the specific wire traveling path of the electrode wire is as follows:

the electrode wire comes out of the wire winding drum, passes through the wire feeding guide wheel (41) to reach the guide wheel in the station A, then turns to reach the lower guide wheel in the station A, then upwards runs through the upper guide wheel in the station A, enters the first group of turning guide wheels (141) on the central upright post, is guided by the first group of turning guide wheels (141), enters the upper guide wheel in the station B, downwards runs through the lower guide wheel in the station B, and then passes through the guide wheel in the station B; then the wire electrode enters the guide wheel of the station C through the guide of the first tensioning guide wheel (151), then reaches the lower guide wheel in the station C, the wire electrode enters the upper guide wheel in the station D after passing through the upper guide wheel in the station C, then enters the second group of steering guide wheels (142) on the center upright post, and after passing through the guide wheel in the station D, then enters the guide wheel of the station E through the guide of the second tensioning guide wheel (152), then reaches the lower guide wheel in the station E, the wire electrode enters the third group of steering guide wheels (143) on the center upright post after passing through the upper guide wheel in the station E, and after passing through the guide of the third group of steering guide wheels (143), the wire electrode enters the upper guide wheel in the station F, then passes through the upper auxiliary guide wheel (51), the wire electrode wire downward passes through the lower auxiliary guide wheel (52), then passes through the guide wheel in the station F, and finally returns to the wire winding drum through the wire outlet guide wheel (48). In the structure, the wire feeding path of the uniformly distributed five-hole machining is close to that of the uniformly distributed six-hole machining, and the difference of the uniformly distributed six-hole machining is that the uniformly distributed five-hole machining does not need to feed wires to a lower guide wheel in a station F, but needs to feed wires to the upper auxiliary guide wheel and the lower auxiliary guide wheel to adjust the direction, then the wires are fed to a first guide wheel assembly between the station A and the station F, and the direction of the wire electrode is adjusted to be parallel to the wire feeding direction through the first guide wheel assembly and then returns to the wire winding drum.

Preferably, the first guide wheel assembly is arranged between the station A and the station B; the number of the guide wheels of the first, second and third groups of steering guide wheels is two; the first, second and third groups of steering guide wheels are respectively positioned in the middle of the extended lines of the station A and the station B, the station C and the station D and the station E and the station F; the fourth guide wheel assembly is arranged on the workbench, the first tensioning guide wheel is arranged between the station B and the station C, and the second tensioning guide wheel is arranged between the station D and the station E. In the structure, the wire electrode can be conveniently moved, and the wire moving distance of the wire electrode can be reduced as far as possible.

Preferably, be equipped with circular direction boss in the center of workstation, the inner of bottom plate is equipped with the arc wall, the arc wall with the outside cooperation of circular direction boss is connected, the outer end of bottom plate is equipped with the circular arc groove, be equipped with on the circular arc groove and be used for fixing the bottom plate fixing bolt on the workstation, fixing bolt passes the circular arc groove with the workstation is connected. The circular guide boss and the arc-shaped groove are arranged, so that the bottom plate can rotate along the circular guide boss, the wire frame assembly can rotate around the center of the workbench, and meanwhile, the bottom plate can be accurately positioned; the arc groove and the fixing bolt are arranged, so that the angle adjustment between the wire frame components is facilitated, the fixing bolt is convenient for fixing and positioning the bottom plate, and the dismounting is also convenient; the circular guide boss and the fixing bolt can realize radial positioning of the bottom plate, the bottom plate is moved along the circumferential direction after the fixing bolt is loosened, and the fixing bolt is screwed after the bottom plate is moved to a specified position, so that the bottom plate can be fixed.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model provides a spark-erosion wire cutting machine bed for processing porous part of disk, it rotates to lead centering piece through slewer drive toper, thereby it rotates to drive the disk part, cooperation radial actuating mechanism drive silk frame is fed along radial direction, the electrode wire that drives the second guide pulley subassembly constantly feeds, thereby accomplish the processing in the hole of two-dimensional shape, a plurality of silk frame subassemblies simultaneous working, can realize a plurality of holes synchronous processing, adopt the mode of multistation synchronous processing, and the machining efficiency is high, the work piece warp for a short time, the advantage that the lathe area is little.

2. The utility model provides a spark-erosion wire cutting machine bed for processing porous part of disk, the silk frame is "the [" style of calligraphy frame, and this "the opening of [" style of calligraphy frame is towards central column for the silk frame subassembly is arranged in the outside of disk part, and when slewer drove the disk part rotation, can not produce the space with the silk frame and interfere, the processing of being convenient for.

3. The utility model provides a preferred scheme through setting up toper direction centering piece, makes the porous part of disk and the coaxial not off-centre of slewer, guarantees the machining precision.

Drawings

Fig. 1 is a schematic view of a six-hole disk-shaped component according to the present invention.

Fig. 2 is a schematic perspective view of a wire-winding drum and a control device of a wire-cut electric discharge machine for machining a disk-shaped porous part according to the present invention.

Fig. 3 to 4 are schematic structural views of a first embodiment of the wire electric discharge machine according to the present invention, in which fig. 3 is a perspective view and fig. 4 is a plan view.

Fig. 5 is a schematic diagram of the distribution of machining stations of the wire-cut electric discharge machine of the present invention.

Fig. 6 is a schematic view of a partial structure of a wire electric discharge machine according to the present invention.

Fig. 7 is a schematic diagram of a wire feeding path of a wire electrode for machining a six-hole disk-shaped part by using the wire electric discharge machine according to the present invention.

Fig. 8-10 are schematic structural views of a wire frame assembly according to the present invention, wherein fig. 8 is a perspective view, fig. 9 is a perspective view of another viewing direction, and fig. 10 is a perspective view of a third viewing direction.

Fig. 11 is a schematic perspective view of the wire frame of the present invention.

Fig. 12 is a schematic perspective view of a workbench according to the present invention.

Fig. 13 is a schematic view showing a wire feeding path structure of a wire electric discharge machine according to the present invention when machining a six-hole disk-shaped part.

Fig. 14 is a schematic view of a five-hole disk-shaped component according to the present invention.

Fig. 15 is a schematic configuration diagram of a second embodiment of the wire electric discharge machine according to the present invention.

Fig. 16 is a schematic perspective view of a wire frame assembly in the F station of the present invention.

Fig. 17 is a schematic view of a wire feeding path of a wire electrode for machining a five-hole disk-shaped part by the electric spark linear cutting machine according to the present invention.

Fig. 18 is a schematic view showing distribution of machining stations of the wire electric discharge machine according to the present invention.

Fig. 19-20 are schematic structural views of another embodiment of the present invention, in which the position between the wire frame assembly and the workbench is fixed, fig. 19 is a schematic top view, and fig. 20 is a partial sectional view.

Fig. 21 is a schematic structural diagram of another embodiment of the present invention, in which the upper arm and the vertical arm are connected.

Detailed Description

In order to make those skilled in the art understand the technical solution of the present invention well, the present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1-4, the present embodiment is an example of machining a disc-shaped part with six uniformly distributed holes, and fig. 1 shows a schematic diagram of the six-hole disc-shaped part in the present embodiment. The embodiment discloses a wire cut electric discharge machine for machining a disc-shaped porous part, which comprises a workbench 31, a central upright column 34 arranged in the middle of the workbench 31, a rotating device 32 for driving the disc-shaped porous part to rotate, six wire frame assemblies 35 for machining arranged on the workbench 31 and a wire moving mechanism 1 for guiding the trend of a wire electrode; six of the wire frame assemblies 35 are radially distributed around the center of the table 31.

Referring to fig. 3, the rotating device 32 is provided with a conical guide centering block 33 for positioning the disc-shaped porous part. The diameter of the upper end of the conical guide centering block 33 is gradually reduced upwards, and the disc-shaped porous part and the rotary device 32 are coaxial and are not eccentric by arranging the conical guide centering block 33, so that the processing precision is ensured; in addition, the fixing and positioning device can also adapt to the fixing and positioning of disc-shaped parts with different central hole diameters, and has very high applicability.

Referring to fig. 3 and 13, the rotating device 32 is located in the center of the table top of the working table 31, and is used for supporting and driving the disc-shaped part to rotate, in order to facilitate the positioning of the disc-shaped part and ensure the disc-shaped part to be concentric with the rotating device 32, the conical guide centering block 33 is arranged at the upper end of the rotating device 32, the conical guide centering block 33 is arranged coaxially with the rotating device 32, the middle part of the rotating device 32 is of a hollow structure, and the central upright column 34 penetrates out of the hollow structure of the rotating device. The disk-shaped part with a central hole is sleeved into the central upright post 34, the bottom surface of the disk-shaped part is arranged on the rotating device 32, and the centering of the disk-shaped part is realized through the hollow conical guide centering block 33. The turning device 32 may be a combination of gear rotation and a motor.

Referring to fig. 1, 6, and 8-10, each of the wire holder assemblies 35 includes a base plate 351 provided on the table 31, a radial driving mechanism provided on the base plate 351, and a wire holder 352 fixed to a slide 22 of the radial driving mechanism; the slider 22 moves on the bottom plate 351, and drives the wire frame 352 to move along the radial direction; wherein the wire frame 352 is a [ -shaped frame, the opening of which faces the central upright post 34. In the above structure, each of the thread holders 352 is driven by a separate radial driving mechanism, and the radial driving mechanisms are controlled by the control device 70 in a unified manner, so that synchronous feeding of the thread holders 352 is realized, and the thread holders and the rotating device 32 are controlled in a linkage manner.

Referring to fig. 2-4, the wire feeding mechanism 1 includes a first guide wheel assembly 11 disposed on the worktable 31 for guiding the wire electrode into and out of the wire winding reel 80, a second guide wheel assembly 12 disposed on the radial driving mechanism and the wire frame 352, a third guide wheel assembly 14 disposed on the central upright column 34, and a fourth guide wheel assembly 15 disposed between the two wire frame assemblies 35; the number of the wire frame assemblies 35 is six, and each of the radial driving mechanism and the wire frame 352 is provided with one second guide wheel assembly 12, so that the number of the corresponding second guide wheel assemblies 12 is also six, which are respectively the second guide wheel assembly 121, the second guide wheel assembly 122, the second guide wheel assembly 123, the second guide wheel assembly 124, the second guide wheel assembly 125, and the second guide wheel assembly 126. After the electrode wire comes out of the wire winding drum 80 and passes through the first guide wheel assembly 11, the electrode wire passes through the second guide wheel assembly 121, under the guidance of the third guide wheel assembly 14 and the fourth guide wheel assembly 15, the electrode wire sequentially passes through the rest of the second guide wheel assemblies 122, 123, 124, 125 and 126, and finally returns to the wire winding drum 80 through the first guide wheel assembly 11. Under the guidance of the third guide wheel assembly 14 and the fourth guide wheel assembly 15, the second guide wheel assembly 12 on each wire frame assembly 35 can be ensured to pass through the electrode wire, so that six holes on the disc-shaped part can be synchronously machined.

Referring to fig. 6 and 8 to 10, the radial driving mechanism includes a driving motor 353 disposed on the base plate 351, a lead screw 354 connected to a driving member of the driving motor 353, a lead screw nut 355 disposed at a lower end of the wire frame 352 and coupled to the lead screw 354 in a fitting manner, and a guide assembly for guiding the movement of the wire frame 352 on the base plate 351; the guide assembly includes a guide rail 21 disposed on the bottom plate 351 and a slider 22 disposed at the lower end of the wire frame 352, and the guide rail 21 is connected with the slider 22 in a sliding fit manner. In the structure, the driving motor 353 drives the screw rod 354 to rotate, so that the screw rod nut 355 moves along the axial direction of the screw rod 354, the screw frame 352 is driven to move along the axial direction of the screw rod 354, and the feeding of the screw frame 352 is realized; by providing a guide assembly, the movement of the wire frame 352 during feeding is ensured to be more stable.

Referring to fig. 6-7 and 10-11, the wire frame 352 includes a vertical arm 3521, an upper arm 3522 connected to an upper end of the vertical arm 3521, and a lower arm 3523 connected to a lower end of the vertical arm 3521; wherein the second guide wheel assembly 12 includes a guide wheel 42 provided on a housing of the driving motor 353, an upper guide wheel 44 provided at an end of the upper arm 3522, and a lower guide wheel 43 provided at an end of the lower arm 3523. In the structure, the wire electrode can sequentially pass through the guide wheel 42, the lower guide wheel 43 and the upper guide wheel 44; or sequentially passes through the upper guide wheel 44, the lower guide wheel 43 and the guide wheel 42; the specific wire moving direction is determined according to the actual processing mode; the wire electrode between the upper guide wheel 44 and the lower guide wheel 43 is used for realizing the cutting processing of the parts.

Referring to fig. 3-4, each of the wire frame assemblies 35 is movably connected to the worktable 31, and each of the wire frame assemblies 35 is rotatable around the center of the worktable 31 for adjusting an included angle between two adjacent wire frame assemblies 35. In the structure, the thread frame assembly 35 can rotate around the workbench 31, and different position adjustment of the thread frame assembly 35 on the workbench 31 can be realized, so that flexible processing of the disc-shaped porous part is realized.

Referring to fig. 3-4, 6-9 and 12, the wire frame assembly 35 can rotate around the center of the worktable 31 by a certain angle, so as to process disk-shaped parts with different hole numbers and distribution states. A position fixing mechanism 6 for fixing the wire frame assembly 35 at different positions on the workbench is arranged between each wire frame assembly 35 and the workbench 31; the position fixing mechanism 6 includes a plurality of sets of first positioning holes 61 provided on the table 31 and second positioning holes 62 provided on the bottom plate 351; the second positioning holes 62 correspond to the first positioning holes 61 in each group. By the arrangement of the structure and the arrangement of the position fixing mechanism 6, the position adjustment of the wire frame assemblies 35 in the circumferential direction can be realized, so that two adjacent wire frame assemblies 35 can be positioned at different angles, in a plurality of groups of first positioning holes 61, each group of first positioning holes 61 represents the change of one position, and the position change of the wire frame assemblies 35 is realized by matching the second positioning holes 62 with the first positioning holes 61; after the position is adjusted, the second positioning hole 62 and the first positioning hole 61 can be fixed through bolts, so that the purpose of positioning is achieved.

Referring to fig. 8-10, the screw rod 354 is fixed on the bottom plate 351 through two mounting seats 356, the driving motor 353 is mounted on the mounting seat 356, and the mounting seat 356 is also provided with second positioning holes 62, which correspond to the second positioning holes 62 on the bottom plate 351 one-to-one.

Referring to fig. 3-7, six wire frame assemblies 35 correspond to six stations, which are station a, station B, station C, station D, station E, and station F in sequence. Through setting up six silk frame subassemblies 35, can realize the synchronous processing in six holes, simultaneously, also can be nimble walk the silk to walking silk mechanism 1, to the silk frame subassembly 35 that needs work, correspond to arrange the electrode silk on second guide pulley subassembly 12, cooperate position fixing mechanism 6 to adjust the position of silk frame subassembly 35, can realize the processing in two holes, three holes, four holes or five holes in a flexible way.

3-7 and 12, the first guide wheel assembly 11 is arranged between the station A and the station B, the first guide wheel assembly 11 comprises a wire inlet guide wheel 41 and a wire outlet guide wheel 48; the third guide wheel assembly 14 comprises a first group of steering guide wheels 141, a second group of steering guide wheels 142 and a third group of steering guide wheels 143, and the number of the first group of steering guide wheels, the number of the second group of steering guide wheels and the number of the third group of steering guide wheels (141, 142 and 143) are two; the first, second and third groups of steering guide wheels (141, 142 and 143) are respectively positioned in the middle of the extension lines of the station A and the station B, the station C and the station D and the station E and the station F; the fourth guide wheel assembly 15 comprises a first tensioning guide wheel 151 and a second tensioning guide wheel 152 arranged on the worktable 31; the first tensioning guide wheel 151 is arranged between the stations B and C and the second tensioning guide wheel 152 is arranged between the stations D and E. In the structure, the wire electrode can be conveniently moved, and the wire moving distance of the wire electrode can be reduced as far as possible. The wire electrode firstly enters the working position A from the wire feeding guide wheel 41, and finally returns to the wire outlet guide wheel 48 from the working position F, the wire electrode direction is adjusted to be parallel to the wire feeding direction, and the wire electrode returns to the wire winding drum 80.

Referring to fig. 3 to 7 and 13, the wire electric discharge machine according to the present embodiment can perform synchronous machining of six uniformly distributed holes. When six holes are uniformly distributed, the included angle between two adjacent stations is 60 degrees; the specific wire traveling path of the electrode wire is as follows:

the electrode wire comes out of the wire winding drum 80, passes through the wire feeding guide wheel (41), reaches the guide wheel 42 in the station A, then turns to reach the lower guide wheel 43 in the station A, then upwards passes through the upper guide wheel 44 in the station A, enters the first group of turning guide wheels (141) on the central upright post 34, is guided by the first group of turning guide wheels (141), enters the upper guide wheel 44 in the station B, downwards passes through the lower guide wheel 43 in the station B, and then passes through the guide wheel 42 in the station B; then enters the guide wheel 42 of the station C through the guide of the first tensioning guide wheel (151) and reaches the lower guide wheel 43 in the station C, and after going upwards through the upper guide wheel 44 in the station C, enters the second group of turning guide wheels (142) on the center upright post 34, and through the guide of the second group of turning guide wheels (142), the wire electrode enters the upper guide wheel 44 in the station D, and goes downwards through the lower guide wheel 43 in the station D, then passes through the guide wheel 42 in the station D, then enters the guide wheel 42 of the station E through the guide of the second tensioning guide wheel (152) and reaches the lower guide wheel 43 in the station E, and after going upwards through the upper guide wheel 44 in the station E, enters the third group of turning guide wheels (143) on the center upright post 34, and through the guide of the third group of turning guide wheels (143), the wire electrode wire enters the upper guide wheel 44 in the station F, and goes downwards through the lower guide wheel 43 in the station F, then passes through the guide wheel 42 in the station F, and finally returns to the wire winding drum 80 through the wire outlet guide wheel (48). In the structure, the third guide wheel assembly 14 and the fourth guide wheel assembly 15 can change the direction of the electrode wire and guide the electrode wire to enter the wire frame assemblies 35 in different stations; the fourth guide wheel assembly 15 can also play a role in tensioning the electrode wire, so that the machining precision is improved.

Referring to fig. 7, when the wire electrode passes from the upper guide wheel 44 on the former wire frame 352 to the upper guide wheel 44 on the latter wire frame 352 through the turning guide wheel 45, it is necessary to ensure that the wire electrode does not deviate from the guide wheel groove and cause abrasion. Therefore, the guide wheel groove of the steering guide wheel 45 must be tangent to the plane of the guide wheel groove of the front and rear upper guide wheels 44, respectively, and the guide wheel groove of the front and rear upper guide wheels 44 must also be tangent to the plane of the guide wheel groove of the steering guide wheel 45.

The wire cut electric discharge machine performs machining in a polar coordinate mode, a wire frame 352 moves linearly, and parts rotate.

Referring to fig. 1-10 and 13, the working principle of the wire-cut electric discharge machine for machining a disc-shaped porous part is as follows:

before the disc-shaped porous part is machined, a coarse hole is formed in the disc-shaped porous part firstly, and an electrode wire penetrates through the disc-shaped porous part; when a disc-shaped porous part needs to be machined, a central hole of the part is sleeved on the central upright column 34 and placed on the rotating device, the part is centered and positioned through the conical guiding and centering block 33, then wire feeding of the wire electrode is carried out, each wire frame assembly 35 is correspondingly provided with one second guide wheel assembly 12, the wire electrode coming out of the wire coiling drum 80 is guided through the first guide wheel assembly 11, then enters the first second guide wheel assembly 121 (the second guide wheel assembly in the station A), is guided by the third guide wheel assembly 14 to pass through the second guide wheel assembly 122 (the second guide wheel assembly in the station B), then enters the third second guide wheel assembly 123 (the second guide wheel assembly in the station C) under the guiding of the fourth guide wheel assembly 15, then passes through the third guide wheel assembly 14 to pass through the fourth second guide wheel assembly 124 (the second guide wheel assembly in the station D), then enters the fifth second guide wheel assembly 125 (the second guide wheel assembly in the station E) under the guiding of the fourth guide wheel assembly 15, then passes through the sixth guide wheel assembly 14 to pass through the second guide wheel assembly 126 in the station F, and finally passes through the sixth guide wheel assembly 80 and passes through the second guide wheel assembly 11. When passing through the second guide wheel assembly 12, the electrode wire can pass through the coarse hole on the disk-shaped porous part; after the wire feeding is finished, the part is processed, the part can be driven to rotate through the rotating device 32, the wire frame 352 is driven to feed along the radial direction through the radial driving mechanism, and the electrode wire of the second guide wheel assembly 12 is driven to continuously feed, so that the processing of a hole in a two-dimensional shape is finished; six wire frame subassemblies 35 simultaneous workings can realize six synchronous processing in hole. The first second guide wheel assembly 121 is located at the station a, the second guide wheel assembly 122 is located at the station B, the third second guide wheel assembly 123 is located at the station C, the fourth second guide wheel assembly 124 is located at the station D, the fifth second guide wheel assembly 125 is located at the station E, and the sixth second guide wheel assembly 126 is located at the station F.

Example 2

Referring to fig. 14, the present embodiment takes the machining of a disk-shaped part with uniformly distributed five holes as an example, and fig. 14 shows a schematic diagram of the disk-shaped part with five holes in the present embodiment.

Referring to fig. 15 to 18, the other structure in this embodiment is the same as that of embodiment 1, except that the wire electric discharge machine of this embodiment machines a five-hole disk-shaped part, and five holes are uniformly distributed. When the uniformly distributed five-hole machining is carried out, the number of the wire frame assemblies 35 is six, the wire frame assemblies 35 in the working positions F are in an out-of-operation state, the wire frame assemblies 35 in the other five working positions are in a working state, and the positions of the five wire frame assemblies 35 in the working state are positioned and adjusted through the position fixing mechanism 6, so that the included angle between every two adjacent wire frame assemblies 35 is 72 degrees, namely the included angle between every two adjacent working positions in the working state is 72 degrees; the second guide wheel assembly 126 on the wire frame assembly 35 in the station F further comprises an upper auxiliary guide wheel 51 arranged at the upper end of the vertical arm 3521 and a lower auxiliary guide wheel 52 arranged at the lower end of the vertical arm 3521; the specific wire traveling path of the electrode wire is as follows:

the electrode wire comes out of the wire winding drum 80, passes through the wire feeding guide wheel (41), reaches the guide wheel 42 in the station A, then turns to reach the lower guide wheel 43 in the station A, then upwards passes through the upper guide wheel 44 in the station A, enters the first group of turning guide wheels (141) on the central upright post 34, is guided by the first group of turning guide wheels (141), enters the upper guide wheel 44 in the station B, downwards passes through the lower guide wheel 43 in the station B, and then passes through the guide wheel 42 in the station B; then through the guide of the first tensioning guide wheel (151) into the guide wheel 42 of station C, to the lower guide wheel 43 in station C, and after going up through the upper guide wheel 44 in station C, to the second set of deflecting guide wheels (142) on the central upright post 34, through the guide of the second set of deflecting guide wheels (142), the wire electrode enters the upper guide wheel 44 in station D, and goes down through the lower guide wheel 43 in station D, then through the guide wheel 42 in station D, then through the guide of the second tensioning guide wheel (152) into the guide wheel 42 of station E, to the lower guide wheel 43 in station E, and after going up through the upper guide wheel 44 in station E, to the third set of deflecting guide wheels (143) on the central upright post 34, through the guide of the third set of deflecting guide wheels (143), the wire electrode enters the upper guide wheel 44 in station F, then through the upper auxiliary guide wheel 51, and down through the lower auxiliary guide wheel 52, then through the guide wheel 42 in station F, and finally through the wire exit guide wheel (48) back to the wire winding drum 80. In the structure, the working mode of the five-station synchronous processing is similar to the wire moving path of the working mode of the six-station synchronous processing, and is different from the working mode of the six-station synchronous processing, the working mode of the five-station synchronous processing does not need to move to the lower guide wheel 43 in the station F, but needs to move to the wire moving direction of the upper auxiliary guide wheel 51 and the lower auxiliary guide wheel 52, then the wire moves to the first guide wheel assembly 11 between the station A and the station F, and the wire electrode is adjusted to be parallel to the wire moving direction through the first guide wheel assembly 11 and returns to the wire winding drum 80.

Example 3

Referring to fig. 3, 4, 8 and 19 to 20, the other structures in this embodiment are the same as those in embodiment 1, except that the position fixing mechanism 6 in embodiment 1 is not used for position fixing in this embodiment, and the embodiment uses: the center of the workbench 31 is provided with a circular guide boss 9, the inner end of the bottom plate 351 is provided with an arc-shaped groove 91, the arc-shaped groove 91 is connected with the outer side of the circular guide boss 9 in a matched manner, the outer end of the bottom plate 351 is provided with an arc-shaped groove 92, the arc-shaped groove 92 is provided with a fixing bolt 93 for fixing the bottom plate 351 on the workbench 31, and the fixing bolt 93 penetrates through the arc-shaped groove 92 to be connected with the workbench. By arranging the circular guide boss 9 and the arc-shaped groove 91, the bottom plate 351 can rotate along the circular guide boss 9, so that the wire frame assembly 35 can rotate around the center of the workbench 31, and meanwhile, the bottom plate 351 can be accurately positioned; the arc groove 92 and the fixing bolt 93 are arranged, so that the angle adjustment between the thread frame assemblies 35 is facilitated, and the fixing bolt 93 is convenient for fixing and positioning the bottom plate 351 and is also convenient to disassemble; the circular guide boss 9 and the fixing bolt 93 can realize radial positioning of the bottom plate 351, after the fixing bolt 93 is loosened, the bottom plate 351 is moved along the circumferential direction, and after the fixing bolt is moved to a specified position, the fixing bolt 93 is screwed, so that the fixing of the bottom plate 351 can be realized.

Referring to fig. 21, the upper arm 3522 is vertically adjustable on the vertical arm 3521, a wedge block 100 is arranged on the upper arm 3522, a vertically extending wedge groove 101 is arranged on the vertical arm 3521, and the wedge block 100 and the wedge groove 101 are in sliding fit with each other. The structure can realize the up-and-down movement of the upper arm 3522 on the vertical arm 3521, and the height of the upper arm 3522 can be adjusted according to the thickness of parts.

And an adjusting bolt for fixing the upper arm 3522 is arranged on the upper arm 3522, and when the upper arm 3522 is fixed, the adjusting bolt abuts against the groove surface of the wedge-shaped groove 101. By arranging the adjusting bolt, when the adjusting bolt is loosened, the wedge block 100 and the wedge groove 101 slide unrestrained, the upper arm 3522 can move up and down on the vertical arm 3521, when the height of the upper arm 3522 is adjusted, the adjusting bolt is screwed, and the upper arm 3522 can be fixed on the vertical arm 3521.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims (10)

1. The wire cut electric discharge machine for machining the disc-shaped porous part is characterized by comprising a workbench, a central upright column arranged in the middle of the workbench, a rotating device for driving the disc-shaped porous part to rotate, a plurality of wire frame assemblies for machining and a wire moving mechanism for guiding the trend of a wire electrode, wherein the wire frame assemblies are arranged on the workbench; a plurality of the wire frame components are radially distributed around the center of the workbench, wherein,

the wire frame assembly comprises a bottom plate, a radial driving mechanism arranged on the bottom plate and a wire frame fixed on a sliding block of the radial driving mechanism; the thread frame is a [ -shaped frame, and an opening of the [ -shaped frame faces the central upright post;

the wire feeding mechanism comprises a first guide wheel assembly (11) arranged on the workbench and used for guiding the electrode wire to enter and exit the wire winding drum, a second guide wheel assembly arranged on the radial driving mechanism and the wire frame, a third guide wheel assembly (14) arranged on the central upright post and a fourth guide wheel assembly (15) arranged between the two wire frame assemblies; the electrode wire is led out from the wire winding drum, passes through the first guide wheel assembly (11), then passes through the second guide wheel assembly, is guided by the third guide wheel assembly (14) and the fourth guide wheel assembly (15), and then sequentially passes through the rest second guide wheel assemblies, and finally returns to the wire winding drum through the first guide wheel assembly (11).

2. A wire electric discharge machine for machining disc-shaped porous parts according to claim 1, characterized in that the middle part of the turning device is a hollow structure, and the center pillar is penetrated from the hollow structure of the turning device.

3. A wire electric discharge machine for machining a disc-shaped porous part according to claim 1, characterized in that a tapered guide centering block for positioning the disc-shaped porous part is provided on the turning device.

4. A wire electric discharge machine for machining a disc-shaped porous part according to claim 1, wherein said wire holder comprises a vertical arm, an upper arm connected to an upper end of the vertical arm, and a lower arm connected to a lower end of the vertical arm; wherein the second guide wheel assembly comprises a guide wheel arranged above the radial driving mechanism, an upper guide wheel arranged at the end part of the upper arm and a lower guide wheel arranged at the end part of the lower arm.

5. A wire electric discharge machine for machining disc-shaped porous parts according to claim 1, characterized in that each of said wire holder assemblies is rotatable about a table center for adjusting an angle between two adjacent wire holder assemblies.

6. A wire electric discharge machine for machining disc-shaped porous parts according to claim 4, characterized in that the number of the wire holder assemblies is six, and the six wire holder assemblies correspond to six stations of station A, station B, station C, station D, station E and station F, respectively.

7. The wire electrical discharge machine for machining disc-shaped porous parts according to claim 6, characterized in that said third guide wheel assembly (14) comprises a first set of steering guide wheels (141), a second set of steering guide wheels (142) and a third set of steering guide wheels (143); the first guide wheel assembly (11) comprises a wire inlet guide wheel (41) and a wire outlet guide wheel (48); the fourth guide wheel assembly (15) comprises a first tensioning guide wheel (151) and a second tensioning guide wheel (152).

8. A wire-cut electric discharge machine for machining a disc-shaped porous part according to claim 7, wherein when six hole uniformly distributed machining is performed, an included angle between two adjacent stations is 60 °; the specific wire moving path of the electrode wire is as follows:

the electrode wire comes out of the wire winding drum, passes through the wire feeding guide wheel (41) to reach the guide wheel in the station A, then turns to reach the lower guide wheel in the station A, then upwards runs through the upper guide wheel in the station A, enters the first group of turning guide wheels (141) on the central upright post, is guided by the first group of turning guide wheels (141), enters the upper guide wheel in the station B, downwards runs through the lower guide wheel in the station B, and then passes through the guide wheel in the station B; the electrode wire enters the guide wheel of the station C through the guide of the first tensioning guide wheel (151), then reaches the lower guide wheel of the station C, and after passing through the upper guide wheel of the station C, the electrode wire enters the upper guide wheel of the station D through the guide of the second set of steering guide wheels (142), and after passing through the lower guide wheel of the station D, then passes through the guide wheel of the station D, then enters the guide wheel of the station E through the guide of the second tensioning guide wheel (152), then reaches the lower guide wheel of the station E, after passing through the upper guide wheel of the station E, the electrode wire enters the third set of steering guide wheels (143) of the station E, and after passing through the upper guide wheel of the station E, the electrode wire enters the upper guide wheel of the station F, the electrode wire passes through the lower guide wheel of the station F, then passes through the guide wheel of the station F, and finally returns to the wire winding drum through the wire outlet guide wheel (48).

9. The wire electric discharge machine for machining disc-shaped porous parts according to claim 6, wherein when the machining for uniformly distributing five holes is performed, the wire frame assembly in the station F is in an inactive state, and the wire frame assemblies in the rest stations are in an active state, wherein an included angle between two adjacent stations in the active state is 72 degrees, and the second guide wheel assembly on the wire frame assembly in the station F further comprises an upper auxiliary guide wheel (51) arranged at the upper end of the vertical arm and a lower auxiliary guide wheel (52) arranged at the lower end of the vertical arm; the specific wire moving path of the electrode wire is as follows:

the electrode wire comes out of the wire winding drum, passes through the wire feeding guide wheel (41) to reach the guide wheel in the station A, then turns to reach the lower guide wheel in the station A, then upwards runs through the upper guide wheel in the station A, enters the first group of turning guide wheels (141) on the central upright post, is guided by the first group of turning guide wheels (141), enters the upper guide wheel in the station B, downwards runs through the lower guide wheel in the station B, and then passes through the guide wheel in the station B; then the wire electrode enters the guide wheel of the station C through the guide of the first tensioning guide wheel (151), then reaches the lower guide wheel in the station C, the wire electrode enters the upper guide wheel in the station D after passing through the upper guide wheel in the station C, then enters the second group of steering guide wheels (142) on the center upright post, and after passing through the guide wheel in the station D, then enters the guide wheel of the station E through the guide of the second tensioning guide wheel (152), then reaches the lower guide wheel in the station E, the wire electrode enters the third group of steering guide wheels (143) on the center upright post after passing through the upper guide wheel in the station E, and after passing through the guide of the third group of steering guide wheels (143), the wire electrode enters the upper guide wheel in the station F, then passes through the upper auxiliary guide wheel (51), the wire electrode wire downward passes through the lower auxiliary guide wheel (52), then passes through the guide wheel in the station F, and finally returns to the wire winding drum through the wire outlet guide wheel (48).

10. The wire electric discharge machine for machining disc-shaped porous parts according to claim 5, wherein a circular guide boss is provided in the center of the table, an arc-shaped groove is provided at the inner end of the base plate, the arc-shaped groove is in fit connection with the outer side of the circular guide boss, an arc-shaped groove is provided at the outer end of the base plate, and a fixing bolt for fixing the base plate on the table is provided on the arc-shaped groove.

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