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 wire electric discharge machine tool for processing disc-shaped porous parts

technical field

The utility model relates to the technical field of electric discharge wire cutting, in particular to a wire electric discharge machine tool for processing disc-shaped porous parts.

Background technique

Wire EDM is to break down the working fluid through the electric field between the two electrodes to form a discharge channel, resulting in instantaneous high temperature melting, vaporization and erosion of materials to achieve the purpose of cutting. Wire EDM is non-contact processing, has no macroscopic force, and is not affected by the hardness and strength of materials. It is widely used in molds, construction machinery, aerospace and other fields.

When processing a plurality of irregular through holes distributed on a disc-shaped porous part, the existing method is to use a traditional wire electric discharge machine tool to cut hole by hole, and the efficiency is very low.

In the existing technology, in order to improve the cutting efficiency, multiple wire cutting stations are set. For example, the invention patent application with the application publication number of CN104002001A discloses a single wire multi-station wire cutting machine tool. Independent wire rack radial feed cuts ring parts into multiple pieces. However, all the wire racks of the above-mentioned machine tool are radially arranged inside the circular workpiece, and the wire racks cut radially from the inside to the outside, so that the machine tool can only perform one-dimensional straight line cutting, and cannot process two-dimensional shaped holes on the disc-shaped parts. Therefore, a wire electric discharge machine tool for processing disc-shaped porous parts is proposed to realize simultaneous hole machining of disc-shaped porous parts.

Utility model content

The purpose of the utility model is to overcome the above-mentioned existing problems and provide a wire electric discharge machine tool for processing disc-shaped porous parts. It can realize synchronous processing of multiple holes, which greatly improves the processing efficiency.

The purpose of this utility model is achieved through the following technical solutions:

A wire electric discharge machine tool for processing disc-shaped porous parts, including a workbench, a central column arranged in the middle of the workbench, a rotary device for driving the disc-shaped porous parts to rotate, and a A plurality of wire frame assemblies for processing and a wire mechanism for guiding the direction of the electrode wire; a plurality of the wire frame assemblies are radially distributed around the center of the workbench, wherein,

The wire frame assembly includes a bottom plate, a radial drive mechanism arranged on the bottom plate, and a wire frame fixed on the slider of the radial drive mechanism; wherein, the wire frame is a "["-shaped frame, The opening of the "["-shaped frame faces the central column;

The wire running mechanism includes a first guide wheel assembly arranged on the workbench for guiding the electrode wire into and out of the winding drum, a second guide wheel assembly arranged on the radial drive mechanism and the wire frame, and a second guide wheel assembly arranged on the The third guide wheel assembly on the central column and the fourth guide wheel assembly arranged between the two wire frame assemblies; the electrode wire passes through the first guide wheel assembly after passing through the second guide wheel assembly from the winding drum , under the guidance of the third guide wheel assembly and the fourth guide wheel assembly, the electrode wire passes through the rest of the second guide wheel assembly in turn, and finally returns to the winding drum through the first guide wheel assembly.

The working principle of the above-mentioned wire electric discharge machine tool for processing disc-shaped porous parts is:

When it is necessary to process the disc-shaped porous parts, insert the center hole of the part into the center column and place it on the slewing device. The part can be centered and positioned through the conical guide centering block, and then the electrode wire is loaded. The electrode wire coming out of the winding drum is guided through the first guide wheel assembly, and then enters a second guide wheel assembly. Under the guidance of the third guide wheel assembly and the fourth guide wheel assembly, the electrode wire finally passes through each wire frame. The second guide wheel assembly, and finally returns to the winding drum through the first guide wheel assembly; after the wire feeding process is completed, the parts are processed, the rotary device drives the parts to rotate, and the radial drive mechanism drives the wire frame to feed radially, through The wire frame drives the radial feed of the electrode wire and the rotational movement of the parts to complete the machining of two-dimensional shape holes; multiple wire frame components are fed at the same time and cooperate with the parts to rotate to realize simultaneous processing of multiple holes.

In a preferred solution of the present utility model, the middle part of the turning device is a hollow structure, and the central column passes through the hollow structure of the turning device. The purpose is to make the structure of the rotary device more compact, and at the same time facilitate the realization that the rotary device drives the disc-shaped porous part to rotate.

Preferably, the rotary device is provided with a conical guiding centering block for positioning the disc-shaped porous part. By setting the cone-shaped guiding centering block, the disc-shaped porous part and the rotary device are coaxial and not eccentric, so as to ensure the machining accuracy.

Preferably, the wire frame includes 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 includes a The guide wheel above the mechanism, the upper guide wheel arranged at the end of the upper arm, and the lower guide wheel arranged at the end of the lower arm; each wire frame assembly is provided with a second guide wheel assembly. In the above structure, the electrode wire can pass through the guide wheel, the lower guide wheel, and the upper guide wheel in sequence; The electrode wire between the lower guide wheels is used to realize the cutting process of the parts.

Preferably, each of the wire frame assemblies can rotate around the center of the workbench for adjusting the angle between two adjacent wire frame assemblies. In the above structure, the wire rack assembly can rotate around the workbench, which can realize the adjustment of different positions of the wire rack assembly on the workbench, thereby realizing the flexible processing of disc-shaped porous parts.

Preferably, the number of the wire frame assemblies is six, and the six wire frame assemblies correspond to the six stations of station A, station B, station C, station D, station E and station F. By adjusting the position of the wire frame reasonably, the processing of two holes, three holes, four holes or five holes can be realized.

Preferably, the third guide wheel assembly includes a first group of steering guide wheels, a second group of steering guide wheels, and a third group of steering guide wheels; the first guide wheel assembly includes a wire feeding guide wheel and a wire outlet guide wheel; The fourth guide wheel assembly includes a first tension guide wheel and a second tension guide wheel.

Preferably, when performing uniform six-hole machining, the angle between two adjacent stations is 60°, and the specific wire path of the electrode wire is:

The electrode wire comes out of the winding drum, passes through the wire feeding guide wheel and reaches the guide wheel in station A, then turns to reach the lower guide wheel in station A, and then moves upward through the upper guide wheel in station A to enter The first set of turning guide wheels on the center column, guided by the first set of turning guide wheels, the electrode wire enters the upper guide wheel in station B, goes downward through the lower guide wheel in station B, and then passes through the working station B. The guide wheel in station B; then enter the guide wheel of station C through the guidance of the first tension guide wheel, reach the lower guide wheel in station C, and go up the wire after passing the upper guide wheel in station C, Enter the second set of turning guide wheels on the center column, and after being guided by the second set of turning guide wheels, the electrode wire enters the upper guide wheel in station D, passes the wire downward through the lower guide wheel in station D, and then passes through the The guide wheel in station D then enters the guide wheel in station E through the guidance of the second tension guide wheel, and then reaches the lower guide wheel in station E, and then goes up and passes through the upper guide wheel in station E , enter the third group of steering guide wheels on the center column, guided by the third group of steering guide wheels, the electrode wire enters the upper guide wheel in station F, and goes downward through the lower guide wheel in station F, and then Pass through the guide wheel in the station F, and finally return to the winding drum through the wire outlet guide wheel. In the above 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 into the wire frame assembly in different stations; wherein, the fourth guide wheel assembly can also play a role in tensioning the electrode wire The role of improving machining accuracy.

Preferably, when performing uniform five-hole machining, the wire frame assembly in station F is in a non-working state, and the wire frame assemblies in the remaining stations are in a working state, wherein the adjacent two of the working stations The included angle between the stations is 72°, and the second guide wheel assembly (12) on the wire frame assembly in the station F also includes an upper auxiliary guide wheel (51) arranged on the upper end of the vertical arm and The lower auxiliary guide wheel (52) that is arranged on the lower end of the vertical arm; the specific wire path of the electrode wire is:

The electrode wire comes out of the winding drum, passes through the wire feeding guide wheel (41) to the guide wheel in station A, then turns to reach the lower guide wheel in station A, and then moves upward through the upper guide wheel in station A. into the first group of steering guide wheels (141) on the center column, guided by the first group of steering guide wheels (141), the electrode wire enters the upper guide wheel in station B, and goes downward through station B The lower guide wheel in station B then passes through the guide wheel in station B; then enters the guide wheel in station C through the guidance of the first tension guide wheel (151), reaches the lower guide wheel in station C, and walks up After the wire passes through the upper guide wheel in the station C, it enters the second group of steering guide wheels (142) on the center column, and after being guided by the second group of steering guide wheels (142), the electrode wire enters the upper guide wheel in the station D. Wheel, the wire goes down through the lower guide wheel in station D, then through the guide wheel in station D, and then enters the guide wheel of station E through the guidance of the second tension guide wheel (152), and reaches the work station The lower guide wheel in the position E moves upwards and passes through the upper guide wheel in the station E, then enters the third group of steering guide wheels (143) on the center column, and is guided by the third group of steering guide wheels (143). The electrode wire enters the upper guide wheel in station F, then passes through the upper auxiliary guide wheel (51), goes downward through the lower auxiliary guide wheel (52), then passes through the guide wheel in station F, and finally passes through the wire outlet guide Wheel (48) gets back to the winding drum. In the above structure, the wire path of uniform five-hole machining and uniform six-hole machining is similar. The difference from uniform six-hole machining is that uniform five-hole machining does not need to go to the lower guide wheel in station F. , but it is necessary to adjust the wire feeding direction of the upper auxiliary guide wheel and the lower auxiliary guide wheel, and then move the wire to the first guide wheel assembly between station A and station F, and the electrode wire passes through the first guide wheel assembly to move the electrode The wire direction is adjusted to be parallel to the wire feeding direction, and returns to the winding drum.

Preferably, the first guide wheel assembly is arranged between station A and station B; the number of guide wheels of the first, second and third groups of turning guide wheels is two; The three sets of steering guide wheels are respectively located in the middle of the extension line of station A and station B, the middle of the extension line of station C and station D, and the middle of the extension line of station E and station F; the fourth guide wheel assembly Set on the workbench, the first tensioning guide wheel is set between station B and station C, and the second tensioning guide wheel is set between station D and station E. In the above structure, the wire running of the wire electrode can be facilitated, and the wire running distance of the wire electrode can be reduced as much as possible.

Preferably, the center of the workbench is provided with a circular guide boss, and the inner end of the bottom plate is provided with an arc-shaped groove, and the arc-shaped groove is mated with the outer side of the circular guide boss, and the The outer end of the bottom plate is provided with an arc groove, and the fixing bolts for fixing the bottom plate on the workbench are arranged on the arc groove, and the fixing bolts pass through the arc grooves to connect with the workbench. By setting circular guide bosses and arc grooves, the bottom plate can rotate along the circular guide bosses, so that the wire frame assembly can rotate around the center of the worktable, and at the same time, the bottom plate can be precisely positioned; by setting arc grooves And the fixing bolts are convenient for the angle adjustment between the wire frame components. The fixing bolts are convenient for fixing and positioning the bottom plate, and it is also convenient for disassembly; the circular guide boss and the fixing bolts can realize the radial positioning of the bottom plate. After loosening the fixing bolts, Move the bottom plate along the circumferential direction, and after moving to the specified position, tighten the fixing bolts to realize the fixing of the bottom plate.

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

1. The wire electric discharge machine tool for processing disc-shaped porous parts in the utility model drives the conical guide centering block to rotate through the rotary device, thereby driving the disc-shaped parts to rotate, and cooperates with the radial drive mechanism to drive the wire frame along the Feed in the radial direction, driving the electrode wire of the second guide wheel assembly to continuously feed, thereby completing the processing of two-dimensional shape holes. Multiple wire frame assemblies work at the same time, which can realize simultaneous processing of multiple holes. Multi-station synchronization is adopted. The processing method has the advantages of high processing efficiency, small deformation of the workpiece, and small footprint of the machine tool.

2. In the wire electric discharge machine tool for processing disc-shaped porous parts in the utility model, the wire frame is a "["-shaped frame, and the opening of the "["-shaped frame faces the central column, so that the wire frame assembly is arranged on the The outer side of the disc-shaped part will not interfere with the wire frame when the rotary device drives the disc-shaped part to rotate, which is convenient for processing.

3. In the preferred solution of the utility model, by setting a conical guiding centering block, the disc-shaped porous part is coaxial with the rotary device without eccentricity, and the machining accuracy is guaranteed.

Description of drawings

Fig. 1 is the schematic diagram of the six-hole disc-shaped part in the utility model.

Fig. 2 is a three-dimensional structure schematic diagram of a wire electric discharge machine tool for processing disc-shaped porous parts equipped with a winding drum and a control device in the utility model.

3-4 are structural schematic diagrams of the first specific embodiment of the wire electric discharge machine tool in the present utility model, wherein, FIG. 3 is a perspective view, and FIG. 4 is a top view.

Fig. 5 is a schematic diagram of the distribution of processing stations of the wire electric discharge machine tool in the present invention.

Fig. 6 is a partial structural schematic diagram of the wire electric discharge machine tool in the present invention.

Fig. 7 is a schematic diagram of the wire-traveling path of the electrode wire for processing six-hole disc-shaped parts by the wire electric discharge machine tool in the present invention.

Figures 8-10 are structural schematic diagrams of the wire frame assembly in the present invention, wherein Figure 8 is a perspective view, Figure 9 is a perspective view of another viewing direction, and Figure 10 is a perspective view of a third viewing direction.

Fig. 11 is a schematic diagram of the three-dimensional structure of the wire rack in the present invention.

Fig. 12 is a schematic diagram of the three-dimensional structure of the workbench in the present invention.

Fig. 13 is a schematic diagram of the wire path structure when the wire electric discharge machine tool in the utility model processes six-hole disc-shaped parts.

Fig. 14 is a schematic diagram of a five-hole disc-shaped part in the utility model.

Fig. 15 is a structural schematic diagram of a second specific embodiment of the wire electric discharge machine tool in the present invention.

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

Fig. 17 is a schematic diagram of the wire-traveling path of the electrode wire of the five-hole disc-shaped part processed by the wire electric discharge machine tool in the utility model.

Fig. 18 is a schematic diagram of the distribution of processing stations of the wire electric discharge machine tool in the present invention.

19-20 are structural schematic diagrams of another specific embodiment of position fixing between the wire frame assembly and the workbench in the present invention, wherein FIG. 19 is a schematic diagram of a top view, and FIG. 20 is a partial sectional view.

Fig. 21 is a structural schematic view of another embodiment of the connection between the upper arm and the vertical arm in the present invention.

detailed description

In order to make those skilled in the art understand the technical solution of the utility model well, the utility model will be further described below in conjunction with the examples and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example 1

Referring to Fig. 1-Fig. 4, this embodiment takes the processing of a disc-shaped part with six holes uniformly distributed as an example, and Fig. 1 shows a schematic diagram of the six-hole disc-shaped part in this embodiment. This embodiment discloses a wire electric discharge machine tool for processing disc-shaped porous parts, including a workbench 31, a central column 34 arranged in the middle of the workbench 31, and a rotary device for driving the disc-shaped porous parts to rotate. The device 32, the six wire rack assemblies 35 arranged on the workbench 31 and the wire feeding mechanism 1 for guiding the direction of the electrode wire; the six wire rack assemblies 35 surround the center of the workbench 31 in a diameter distributed radially.

Referring to FIG. 3 , the rotary device 32 is provided with a conical guiding centering block 33 for positioning the disc-shaped porous part. The diameter of the upper end of the tapered guide and centering block 33 gradually decreases upwards. By setting the tapered guide and centering block 33, the disc-shaped porous part and the rotary device 32 are coaxial without eccentricity to ensure machining accuracy; in addition, it can also It is suitable for the fixing and positioning of disc-shaped parts with different center hole diameters, and has very high applicability.

Referring to Fig. 3 and Fig. 13, the rotary device 32 is located at the center of the table top of the workbench 31, and is used to support the disc-shaped part and drive the disc-shaped part to rotate, to facilitate the positioning of the disc-shaped part, to ensure that the disc-shaped part is concentric with the rotary device 32, The conical guide centering block 33 is arranged on the upper end of the rotary device 32, the conical guide centering block 33 is arranged coaxially with the rotary device 32, and the middle part of the rotary device 32 is a hollow structure, so The central column 34 passes through the hollow structure of the slewing device. Insert the disc-shaped part with a central hole into the center column 34, place the bottom surface on the rotary device 32 and realize the centering of the disc-shaped part through the hollow conical guide centering block 33. The turning device 32 can adopt the combination of gear rotation and motor.

Referring to Fig. 1, Fig. 6 and Fig. 8-Fig. 10, each said wire shelf assembly 35 all comprises the bottom plate 351 that is arranged on the workbench 31, the radial driving mechanism that is arranged on the described bottom plate 351 and is fixed on the described The wire frame 352 on the slider 22 of the radial drive mechanism; the slider 22 moves on the bottom plate 351, driving the wire frame 352 to move along the radial direction; wherein, the wire frame 352 is in the shape of “[” frame, the opening of the "["-shaped frame is towards the central column 34. In the above structure, each wire rack 352 is driven by an independent radial driving mechanism, and the radial driving mechanism is uniformly controlled by the control device 70 to realize synchronous feeding of the wire racks 352 and realize linkage control with the rotary device 32 at the same time.

Referring to FIGS. 2-4 , the wire running mechanism 1 includes a first guide wheel assembly 11 arranged on the workbench 31 for guiding the electrode wire into and out of the reel 80 , and arranged on the radial drive mechanism and the wire holder 352 The second guide wheel assembly 12 on the top, the third guide wheel assembly 14 arranged on the central column 34 and the fourth guide wheel assembly 15 arranged between the two wire frame assemblies 35; the wire frame assembly 35 The number is six, and a second guide wheel assembly 12 is provided on each radial drive mechanism and the wire frame 352, therefore, the corresponding second guide wheel assemblies 12 are also six, 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 winding drum 80 and passes through the first guide wheel assembly 11, it passes through the second guide wheel assembly 121, and under the guidance of the third guide wheel assembly 14 and the fourth guide wheel assembly 15, the electrode wire passes through the The rest of the second guide wheel assemblies 122 , 123 , 124 , 125 , 126 finally return to the 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, it can be ensured that the second guide wheel assembly 12 on each wire frame assembly 35 passes through the electrode wire, thereby synchronizing the six holes on the disc-shaped part. processing.

Referring to Fig. 6 and Fig. 8-Fig. 10, the radial driving mechanism includes a driving motor 353 arranged on the bottom plate 351, a screw rod 354 connected to the driving part of the driving motor 353, a screw rod 354 arranged on the wire frame 352 The screw nut 355 at the lower end and connected with the screw rod 354 and the guide assembly for guiding the wire frame 352 to move on the bottom plate 351; The guide rail 21 and the slider 22 arranged at the lower end of the wire frame 352 , the guide rail 21 is connected with the slider 22 by sliding fit. In the above structure, the driving motor 353 drives the screw mandrel 354 to rotate, so that the screw mandrel nut 355 moves along the axis direction of the screw mandrel 354, drives the wire rack 352 to move along the axis direction of the screw mandrel 354, and realizes the screw rack 352. The feeding; by setting the guide assembly, it is ensured that the wire rack 352 moves more stably during feeding.

Referring to Fig. 6-Fig. 7 and Fig. 10-Fig. 11, the wire rack 352 includes a vertical arm 3521, an upper arm 3522 connected to the upper end of the vertical arm 3521 and a lower arm 3523 connected to the lower end of the vertical arm 3521; wherein , the second guide wheel assembly 12 includes a guide wheel 42 arranged on the casing of the drive motor 353 , an upper guide wheel 44 arranged at the end of the upper arm 3522 , and a lower roller arranged at the end of the lower arm 3523 . Guide wheel 43. In the above structure, the electrode wire can pass through the guide wheel 42, the lower guide wheel 43, and the upper guide wheel 44 in sequence; or pass through the upper guide wheel 44, the lower guide wheel 43, and the guide wheel 42 in sequence; the specific wire direction depends on the actual processing method Confirm; the electrode wire between the upper guide wheel 44 and the lower guide wheel 43 is used to realize the cutting process of parts.

Referring to Figures 3-4, each wire frame assembly 35 is movably connected to the workbench 31, and each wire frame assembly 35 can rotate around the center of the workbench 31 for adjusting two adjacent wire frame assemblies Angle between components 35. In the above structure, the wire rack assembly 35 can rotate around the workbench 31 , which can realize different position adjustments of the wire rack assembly 35 on the workbench 31 , thereby realizing flexible processing of disc-shaped porous parts.

Referring to Fig. 3-Fig. 4, Fig. 6-Fig. 9 and Fig. 12, the wire rack assembly 35 can rotate around the center of the worktable 31 at a certain angle to realize the processing of disc-shaped parts with different numbers of holes and distribution states. Between each said wire rack assembly 35 and said workbench 31, a position fixing mechanism 6 for fixing said wire rack assembly 35 at different positions on the workbench is provided; Multiple sets of first positioning holes 61 on the base plate 31 and second positioning holes 62 provided on the bottom plate 351; the positions of the second positioning holes 62 and each set of first positioning holes 61 correspond to each other. By arranging the above-mentioned structure, by arranging the position fixing mechanism 6, the position adjustment of the wire rack assembly 35 in the circumferential direction can be realized, so that two adjacent wire rack assemblies 35 can be at different angles, and multiple sets of first positioning holes 61 Among them, each group of first positioning holes 61 represents a position change, and the second positioning holes 62 are matched with the first positioning holes 61 to realize the position change of the wire frame assembly 35; after the position is adjusted, the second positioning holes 62 and the first positioning holes 61 are matched. The first positioning hole 61 can be fixed by bolts to achieve the purpose of positioning.

Referring to Fig. 8-Fig. 10, the screw rod 354 is fixed on the base plate 351 through two mounts 356, the drive motor 353 is mounted on the mounts 356, and the mount 356 is also provided with a second The two positioning holes 62 are in one-to-one correspondence with the second positioning holes 62 on the bottom plate 351 .

Referring to Fig. 3-Fig. 7, the six wire frame assemblies 35 correspond to six stations respectively, and the six stations are station A, station B, station C, station D, station E and station F in turn. By arranging six wire rack assemblies 35, synchronous processing of six holes can be realized. At the same time, the wire feeding mechanism 1 can also be moved flexibly. On the wheel assembly 12, cooperate with the position fixing mechanism 6 to adjust the position of the wire frame assembly 35, so that the processing of two holes, three holes, four holes or five holes can be flexibly realized.

Referring to Fig. 3-Fig. 7 and Fig. 12, the first guide wheel assembly 11 is arranged between the station A and the station B, and the first guide wheel assembly 11 includes a wire inlet guide wheel 41 and a wire outlet guide wheel 48 The third guide wheel assembly 14 includes 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 first, second and third groups of steering guide wheels (141, 142 , 143) have two guide wheels; the first, second, and third groups of turning guide wheels (141, 142, 143) are respectively located in the middle of the extension line of station A and station B, and between station C and station B. The middle part of the extension line of position D and the middle part of the extension line of station E and station F; Wheel 152; the first tension guide wheel 151 is arranged between station B and station C, and the second tension guide wheel 152 is arranged between station D and station E. In the above structure, the wire running of the wire electrode can be facilitated, and the wire running distance of the wire electrode can be reduced as much as possible. The electrode wire first enters the station A from the wire feed guide wheel 41, and finally returns to the wire discharge guide wheel 48 from the station F, adjusts the wire electrode direction to be parallel to the wire feed direction, and returns to the winding drum 80.

Referring to Fig. 3-Fig. 7 and Fig. 13, the wire electric discharge machine tool in this implementation can process six evenly distributed holes synchronously. When performing uniform six-hole machining, the angle between two adjacent stations is 60°; the specific wire path of the electrode wire is:

The electrode wire comes out of the winding drum 80, passes through the wire feeding guide wheel (41) and reaches the guide wheel 42 in the station A, then turns to the lower guide wheel 43 in the station A, and then moves upward through the station A. The upper guide wheel 44 of the center column 34 enters the first group of steering guide wheels (141), and through the guidance of the first group of steering guide wheels (141), the electrode wire enters the upper guide wheel 44 in the station B, downward The wire passes through the lower guide wheel 43 in station B, then passes through the guide wheel 42 in station B; then enters the guide wheel 42 of station C through the guidance of the first tension guide wheel (151), and then reaches the station The lower guide wheel 43 in C moves upwards through the upper guide wheel 44 in the station C, enters the second group of steering guide wheels (142) on the center column 34, and passes through the second group of steering guide wheels (142) Guidance, the electrode wire enters the upper guide wheel 44 in the station D, moves downward through the lower guide wheel 43 in the station D, then passes through the guide wheel 42 in the station D, and then passes through the second tension guide wheel ( 152) guide into the guide wheel 42 of the station E, arrive at the lower guide wheel 43 in the station E, go up the wire and pass through the upper guide wheel 44 in the station E, and then enter the third group of turning wheels on the center column 34. The guide wheel (143), through the guidance of the third group of steering guide wheels (143), the electrode wire enters the upper guide wheel 44 in the station F, moves downward through the lower guide wheel 43 in the station F, and then passes through the working station. The guide wheel 42 in the position F finally returns to the winding drum 80 through the wire outlet guide wheel (48). In the above 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 into the wire frame assembly 35 in different stations; wherein, the fourth guide wheel assembly 15 can also play a role The function of tensioning the electrode wire improves the machining accuracy.

Referring to Fig. 7, when the electrode wire enters the upper guide wheel 44 on the rear wire rack 352 through the turning guide wheel 45 from the upper guide wheel 44 on the previous wire rack 352, it must be guaranteed that the electrode wire will not deviate from the guide wheel groove and cause wear. Therefore, the guide wheel groove of the steering guide wheel 45 must be tangent to the plane where the guide wheel groove of the upper guide wheel 44 of the front and rear is respectively, and the guide wheel groove of the upper guide wheel 44 of the front and rear must also be aligned with the guide wheel groove of the steering guide wheel 45. The plane where the wheel groove is located is tangent.

The wire electric discharge machine tool is processed in the form of polar coordinates, the wire frame 352 moves linearly, and the parts rotate.

Referring to Fig. 1-Fig. 10 and Fig. 13, the working principle of the above-mentioned wire electric discharge machine tool for processing disc-shaped porous parts is:

Before processing the disc-shaped porous part, a thick hole is opened on the disc-shaped porous part for the electrode wire to pass through the disc-shaped porous part; when the disc-shaped porous part needs to be processed, the center hole of the part is inserted into the center The upright column 34 is placed on the slewing device, and the parts are centered and positioned with the conical guide centering block 33, and then the wire of the electrode wire is carried out. Each wire rack assembly 35 is correspondingly provided with a second guide wheel assembly 12, and the winding The electrode wire coming out of the wire drum 80 is guided through the first guide wheel assembly 11, and then enters the first second guide wheel assembly 121 (the second guide wheel assembly in station A), and turns to the third guide wheel assembly 14. Next, through the second second guide wheel assembly 122 (the second guide wheel assembly in station B), then under the guidance of the fourth guide wheel assembly 15, enter the third second guide wheel assembly 123 (work station the second guide wheel assembly in C), then by the turning of the third guide wheel assembly 14, through the fourth second guide wheel assembly 124 (the second guide wheel assembly in the station D), then in the fourth guide wheel assembly Under the guidance of the assembly 15, enter the fifth second guide wheel assembly 125 (the second guide wheel assembly in the station E), and then pass through the sixth second guide wheel assembly 126 through the turning of the third guide wheel assembly 14 (the second guide wheel assembly in the station F), and finally get back to the winding drum 80 by the first guide wheel assembly 11. When the electrode wire passes through the second guide wheel assembly 12, it will pass through the thick hole on the disc-shaped porous part; after the wire feeding is completed, the part is processed, and the part can be driven to rotate through the rotary device 32, and the wire can be driven through the radial drive mechanism. The frame 352 feeds along the radial direction, driving the electrode wire of the second guide wheel assembly 12 to continuously feed, thereby completing the processing of the two-dimensional shape of the hole; the six wire frame assemblies 35 work at the same time, which can realize the synchronous processing of six holes . Wherein, the first second guide wheel assembly 121 is located on the station A, the second second guide wheel assembly 122 is located on the station B, the third second guide wheel assembly 123 is located on the station C, and the fourth guide wheel assembly 123 is located on the station C. The second guide wheel assembly 124 is located on station D, the fifth second guide wheel assembly 125 is located on station E, and the sixth second guide wheel assembly 126 is located on station F.

Example 2

Referring to Fig. 14, this embodiment takes the processing of a disc-shaped part with five holes uniformly distributed as an example, and Fig. 14 shows a schematic diagram of the five-hole disc-shaped part in this embodiment.

Referring to Fig. 15-Fig. 18, other structures in this implementation are the same as in Embodiment 1, the difference is that the wire electric discharge machine tool in this implementation processes five-hole disc-shaped parts, and the five holes are evenly distributed. When performing uniform five-hole machining, the number of wire rack assemblies 35 still has six, the wire rack assemblies 35 in the station F are in a non-working state, and the wire rack assemblies 35 in the remaining five stations are in a working state, wherein, The positions of the five wire rack assemblies 35 in the working state are positioned and adjusted by the position fixing mechanism 6, so that the angle between two adjacent wire rack assemblies 35 is 72°, that is, the two adjacent wire rack assemblies 35 in the working state The included angle between the two stations is 72°; the second guide wheel assembly 126 on the wire frame assembly 35 in the station F also includes an upper auxiliary guide wheel 51 arranged on the upper end of the vertical arm 3521 and a set The lower auxiliary guide wheel 52 at the lower end of the vertical arm 3521; the specific wire path of the electrode wire is:

The electrode wire comes out of the winding drum 80, passes through the wire feeding guide wheel (41) and reaches the guide wheel 42 in the station A, then turns to the lower guide wheel 43 in the station A, and then moves upward through the station A. After the upper guide wheel 44 on the center column 34, enter the first group of steering guide wheels (141), through the guidance of the first group of steering guide wheels (141), the electrode wire enters the upper guide wheel 44 in the station B, to The lower wire travels through the lower guide wheel 43 in station B, then passes through the guide wheel 42 in station B; The lower guide wheel 43 in the position C, after passing the upper guide wheel 44 in the station C upwards, enters the second group of steering guide wheels (142) on the center column 34, and passes through the second group of steering guide wheels (142) The guide, the electrode wire enters the upper guide wheel 44 in the station D, goes down through the lower guide wheel 43 in the station D, then passes the guide wheel 42 in the station D, and then passes through the second tension guide wheel After the guidance of (152) enters the guide wheel 42 of the station E, it arrives at the lower guide wheel 43 in the station E, and after the upper guide wheel 44 passes through the upper guide wheel 44 in the station E, it enters the third group on the center column 34 Steering guide pulley (143), guided by the third set of steering guide pulleys (143), the electrode wire enters the upper guide pulley 44 in station F, then passes through the upper auxiliary guide pulley 51, and goes downward through the lower auxiliary guide pulley 52, then through the guide wheel 42 in the station F, and finally get back to the winding drum 80 through the wire-out guide wheel (48). In the above structure, the working mode of the five-station synchronous processing is similar to the wire path of the six-station synchronous processing. The difference from the six-station synchronous processing is that the five-station synchronous processing works in In the station F, it is not necessary to move the wire to the lower guide wheel 43, but to adjust the direction of the wire feeding to the upper auxiliary guide wheel 51 and the lower auxiliary guide wheel 52, and then to the first guide wheel between the station A and the station F. The wheel assembly 11 moves the wire, and the electrode wire is adjusted to be parallel to the wire feeding direction through the first guide wheel assembly 11, and returns to the winding drum 80.

Example 3

Referring to Fig. 3, Fig. 4, Fig. 8 and Fig. 19-Fig. 20, other structures in this implementation are the same as in Embodiment 1, the difference is that the position fixing mechanism 6 in Embodiment 1 is not used for position fixing in this implementation , what this embodiment adopts is that: the center of the workbench 31 is provided with a circular guide boss 9, and the inner end of the bottom plate 351 is provided with an arc-shaped groove 91, and the arc-shaped groove 91 is connected with the circular The outer side of the guide boss 9 is mated and connected, and the outer end of the base plate 351 is provided with an arc groove 92, and the arc groove 92 is provided with a fixing bolt 93 for fixing the base plate 351 on the workbench 31. The fixing bolt 93 passes through the circular arc groove 92 and is connected with the workbench. By setting the circular guide boss 9 and the arc groove 91, the bottom plate 351 can rotate along the circular guide boss 9, so that the wire frame assembly 35 can be rotated around the center of the worktable 31, and the bottom plate 351 can be precisely positioned. Positioning; by setting the arc groove 92 and the fixing bolt 93, it is convenient to adjust the angle between the wire rack components 35, and the fixing bolt 93 is convenient for fixing and positioning the bottom plate 351, and it is also convenient for disassembly; the circular guide boss 9 and the fixing bolt 93 The bottom plate 351 can be positioned radially. After the fixing bolts 93 are loosened, the bottom plate 351 is moved along the circumferential direction.

Referring to Figure 21, the upper arm 3522 can be adjusted up and down on the vertical arm 3521, the upper arm 3522 is provided with a wedge block 100, and the vertical arm 3521 is provided with a vertically extending wedge groove 101, the The wedge block 100 is slidingly fitted with the wedge groove 101 . The above 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 the parts.

The upper arm 3522 is provided with an adjusting bolt for fixing the upper arm 3522 , and when fixing, the adjusting bolt is pressed against the groove surface of the wedge-shaped groove 101 . By setting the adjustment bolt, when the adjustment bolt is loosened, the sliding of the wedge block 100 and the wedge groove 101 is not restricted, and 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 adjustment bolt is tightened, which can Realize that upper arm 3522 is fixed on the vertical arm 3521.

The above is a preferred implementation of the utility model, but the implementation of the utility model is not limited by the above content, and any other changes, modifications, substitutions and combinations that do not deviate from the spirit and principle of the utility model , simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (10)

1. A wire electric discharge machine tool for processing disc-shaped porous parts is characterized in that it comprises a workbench, a central column arranged at the middle part of the workbench, a rotary device for driving the disc-shaped porous parts to rotate, A plurality of wire rack assemblies for processing and a wire feeding mechanism for guiding the direction of the electrode wire are arranged on the workbench; a plurality of the wire rack assemblies are radially distributed around the center of the workbench, wherein, The wire frame assembly includes a bottom plate, a radial drive mechanism arranged on the bottom plate, and a wire frame fixed on the slider of the radial drive mechanism; wherein, the wire frame is a "["-shaped frame, The opening of the "["-shaped frame faces the central column; The wire running mechanism includes a first guide wheel assembly (11) arranged on the workbench for guiding the electrode wire into and out of the winding drum, a second guide wheel assembly arranged on the radial drive mechanism and the wire frame, and a set of The third guide wheel assembly (14) on the center column and the fourth guide wheel assembly (15) arranged between the two wire frame assemblies; the electrode wire comes out from the winding drum and passes through the first guide wheel assembly After (11), through the second guide wheel assembly, under the guidance of the third guide wheel assembly (14) and the fourth guide wheel assembly (15), the electrode wire passes through the remaining second guide wheel assemblies in turn, and finally passes through the first guide wheel assembly. A guide wheel assembly (11) returns to the winding drum. 2. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 1, wherein the middle part of the rotary device is a hollow structure, and the central column passes through the hollow structure of the rotary device. out. 3 . The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 1 , wherein the rotary device is provided with a conical guiding centering block for positioning the disc-shaped porous parts. 4 . 4. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 1, wherein the wire frame includes a vertical arm, an upper arm connected to the upper end of the vertical arm, and an upper arm connected to the vertical arm. The lower arm at the lower end of the straight arm; wherein, the second guide wheel assembly includes a guide wheel arranged above the radial drive mechanism, an upper guide wheel arranged at the end of the upper arm, and an upper guide wheel arranged at the end of the lower arm lower guide wheel. 5. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 1, wherein each said wire rack assembly can rotate around the center of the workbench for adjusting two adjacent wires. Angle between rack components. 6. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 4, wherein the number of said wire rack assemblies is six, and the six wire rack assemblies correspond to station A, work station There are six stations including station B, station C, station D, station E and station F. 7. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 6, characterized in that, the third guide wheel assembly (14) comprises a first group of turning guide wheels (141), a second A group of steering guide wheels (142) and a third group of steering guide wheels (143); the first guide wheel assembly (11) includes a wire feeding guide wheel (41) and a wire outlet guide wheel (48); the fourth guide wheel The wheel assembly (15) includes a first tension guide wheel (151) and a second tension guide wheel (152). 8. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 7, wherein when carrying out uniformly distributed six-hole machining, the angle between adjacent two stations is 6° °; the specific wire path of the electrode wire is: The electrode wire comes out of the winding drum, passes through the wire feeding guide wheel (41) to the guide wheel in station A, then turns to reach the lower guide wheel in station A, and then moves upward through the upper guide wheel in station A. into the first group of steering guide wheels (141) on the center column, guided by the first group of steering guide wheels (141), the electrode wire enters the upper guide wheel in station B, and goes downward through station B The lower guide wheel in station B then passes through the guide wheel in station B; then enters the guide wheel in station C through the guidance of the first tensioning guide wheel (151), and then reaches the lower guide wheel in station C and walks up After the wire passes through the upper guide wheel in the station C, it enters the second group of steering guide wheels (142) on the center column, and after being guided by the second group of steering guide wheels (142), the electrode wire enters the upper guide wheel in the station D. Wheel, the wire goes down through the lower guide wheel in station D, then through the guide wheel in station D, and then enters the guide wheel of station E through the guidance of the second tension guide wheel (152), and reaches the work station The lower guide wheel in the position E moves upwards and passes through the upper guide wheel in the station E, then enters the third group of steering guide wheels (143) on the center column, and through the guidance of the third group of steering guide wheels (143), The electrode wire enters the upper guide wheel in station F, passes the wire downward through the lower guide wheel in station F, then passes through the guide wheel in station F, and finally returns to the coiling drum through the wire outlet guide wheel (48) . 9. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 6, characterized in that, when performing uniform five-hole machining, the wire rack assembly in the station F is in a non-working state, and the rest The wire frame assembly of the station is in working condition, wherein, the angle between two adjacent stations in the working station is 72°, the second guide on the wire frame assembly in the station F The wheel assembly also includes 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 walking path of the electrode wire is: The electrode wire comes out of the winding drum, passes through the wire feeding guide wheel (41) to the guide wheel in station A, then turns to reach the lower guide wheel in station A, and then moves upward through the upper guide wheel in station A. into the first group of steering guide wheels (141) on the center column, guided by the first group of steering guide wheels (141), the electrode wire enters the upper guide wheel in station B, and goes downward through station B The lower guide wheel in station B then passes through the guide wheel in station B; then enters the guide wheel in station C through the guidance of the first tensioning guide wheel (151), and then reaches the lower guide wheel in station C and walks up After the wire passes through the upper guide wheel in the station C, it enters the second group of steering guide wheels (142) on the center column, and after being guided by the second group of steering guide wheels (142), the electrode wire enters the upper guide wheel in the station D. Wheel, the wire goes down through the lower guide wheel in station D, then through the guide wheel in station D, and then enters the guide wheel of station E through the guidance of the second tension guide wheel (152), and reaches the work station The lower guide wheel in the position E moves upwards and passes through the upper guide wheel in the station E, then enters the third group of steering guide wheels (143) on the center column, and through the guidance of the third group of steering guide wheels (143), The electrode wire enters the upper guide wheel in station F, then passes through the upper auxiliary guide wheel (51), goes downward through the lower auxiliary guide wheel (52), then passes through the guide wheel in station F, and finally passes through the wire outlet guide Wheel (48) gets back to the winding drum. 10. The wire electric discharge machine tool for processing disc-shaped porous parts according to claim 5, characterized in that, the center of the workbench is provided with a circular guide boss, and the inner end of the base plate is provided with Arc groove, the arc groove is connected with the outer side of the circular guide boss, the outer end of the bottom plate is provided with an arc groove, and the arc groove is provided with a bottom plate for fixing the bottom plate on the working Fixing bolts on the table.

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