CN215902870U

CN215902870U - Double-chuck adjusting device of electric spark machine

Info

Publication number: CN215902870U
Application number: CN202120699038.8U
Authority: CN
Inventors: 赵海锋; 刘冬硕
Original assignee: Xingfa Aluminium Chengdu Co ltd
Current assignee: Xingfa Aluminium Chengdu Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2022-02-25
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to a double-chuck adjusting device of an electric spark machine, which comprises a main lifting rod and a lifting adjusting mounting plate at the bottom of the main lifting rod, wherein 2 groups of chuck assemblies are arranged below the main lifting rod in parallel, each group of chuck assemblies at least comprises a first fine adjustment mechanism and a second fine adjustment mechanism which are vertical to each other in adjusting direction, the middle of the first fine adjustment mechanism and the second fine adjustment mechanism is fixed at intervals through a guide rail mounting plate, the bottom of the second fine adjustment mechanism is fixedly connected with a chuck through the chuck mounting plate, and the bottom of the chuck is movably connected with an electrode. The cutting time is shortened by a half, and the cutting efficiency of the die is effectively improved.

Description

Double-chuck adjusting device of electric spark machine

Technical Field

The utility model relates to an adjusting device of an electric spark machine for manufacturing a section extrusion die, in particular to a double-chuck adjusting device of the electric spark machine, which can carry out three-way adjustment.

Background

In the process of aluminum profile extrusion production, an aluminum bar passes through dies with different specifications through an extrusion process so as to form aluminum profile products with different section shapes.

The die is generally in a cylindrical shape, and in the process of die preparation, an electric spark machine is needed to cut the center of the die, and a shunting hole, a working band, a blank knife and the like are formed in the middle of the cylindrical die and are used for forming the aluminum material. The requirement on the fineness degree is very high in the process of extruding the aluminum profile, so that the aluminum profile obtained by extrusion can reach the required size and precision, and the requirement on the hole site specification of the die is also accurate.

In the actual production process, the size and the variety of the die are various, the specifications of corresponding clamp equipment are relatively more, and the cost is high. Traditional mould adopts single cartridge assembly to cut on the mould, when needing 2 or the shaping hole more than 2 on the mould, needs to adopt cartridge assembly to cut one by one, and it is long-lived, inefficient, put at every turn and need find the cartridge assembly accurate position, if there is the deviation probably to lead to the mould whole to scrap.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-chuck adjusting device of an electric discharge machine, which can carry out XYZ three-direction fine adjustment.

The technical means adopted by the utility model are as follows.

The utility model provides an electric spark machine double-chuck adjusting device, contains main lifter, and the lift adjustment mounting panel is connected to its bottom, sets up 2 groups of chuck subassemblies side by side under this lift adjustment mounting panel, and every group chuck subassembly contains adjustment direction mutually perpendicular's first fine-tuning and second fine-tuning at least, and the guide rail mounting panel interval is fixed in the middle of the two, and chuck mounting panel and chuck fixed connection are passed through to second fine-tuning bottom, and the chuck bottom is connected with the electrode.

Preferably, the first fine adjustment mechanism comprises a first adjusting screw rod, at least 1 first screw rod seat and at least 1 group of first sliding assemblies which are matched with each other and slide, the first sliding assemblies are installed between the lifting adjusting installation plate and the guide rail installation plate, the at least 1 first screw rod seat is fixed on the bottom surface of the lifting adjusting installation plate or the top surface of the guide rail installation plate, the first adjusting screw rod is installed on the first screw rod seat, the first adjusting screw rod is in contact with the first sliding assemblies and is provided with mutually matched clamping teeth, so that the first sliding assemblies slide along with the first adjusting screw rod when the first adjusting screw rod is rotated; the second fine adjustment mechanism comprises a second adjusting screw rod, at least 1 second screw rod seat and at least 1 group of second sliding assemblies which are matched with each other and slide, the second sliding assemblies are installed between the guide rail mounting plate and the chuck mounting plate, at least 1 second screw rod seat is fixed on the bottom surface of the guide rail mounting plate or on the top surface of the chuck mounting plate, the second adjusting screw rod is in contact with the second sliding assemblies and is provided with mutually matched clamping teeth, and therefore when the second adjusting screw rod is rotated, the second sliding assemblies slide relatively.

Preferably, the first fine adjustment mechanism comprises 2 first screw rod seats and 2 groups of first sliding assemblies, each group of first sliding assemblies is a first sliding rail and a first sliding block which are matched with each other to slide, the first sliding rail is mounted on the bottom surface of the lifting adjustment mounting plate, the first sliding block is mounted on the top surface of the guide rail mounting plate, or the first sliding block is mounted on the bottom surface of the lifting adjustment mounting plate, the first sliding rail is mounted on the top surface of the guide rail mounting plate, the 2 first screw rod seats are located between the 2 groups of first sliding assemblies, two ends of the first adjustment screw rod are respectively mounted on the 2 first screw rod seats, the first adjustment screw rod is in contact with the first sliding rails on two sides and has mutually matched latch teeth, so that the first sliding rail moves along with the first adjustment screw rod when the first adjustment screw rod is rotated; the second fine adjustment mechanism comprises 2 second screw rod seats and 2 groups of second sliding assemblies, each group of second sliding assemblies is a second sliding rail and a second sliding block which are matched with each other to slide, the second sliding rails are arranged on the bottom surface of the guide rail mounting plate, the second sliding blocks are arranged on the top surface of the chuck mounting plate, or the second sliding blocks are arranged on the bottom surface of the guide rail mounting plate, the second sliding rails are arranged on the top surface of the chuck mounting plate, the 2 second screw rod seats are located between the 2 groups of second sliding assemblies, two ends of the second adjusting screw rod are respectively arranged on the 2 second screw rod seats, the second adjusting screw rod is in contact with the second sliding rails on two sides and is provided with mutually matched clamping teeth, and the second sliding rails can move relatively when the second adjusting screw rod is rotated.

Preferably, the bottom of the chuck extends downwards out of the guide sleeve, the guide sleeve is internally provided with the transverse moving rod in a penetrating way, the clamping piece is inserted into the penetrating hole on the guide sleeve to fix one end of the transverse moving rod, the other end of the transverse moving rod comprises a lateral installation groove, an electrode rod is inserted in the installation groove, and the electrode is positioned at the bottom of the electrode rod.

Preferably, the bottom of the chuck is connected with a detachable connector, an electrode rod is arranged in the bottom of the connector, and the electrode is positioned at the bottom of the electrode rod.

Preferably, the 1 or 2 chuck assemblies are mounted on the lifting adjusting mounting plate through a third fine adjustment mechanism, the third fine adjustment mechanism comprises an auxiliary guide rail mounting plate and a lifting lead screw, and the bottom end of the lifting lead screw is rotatably connected to the auxiliary guide rail mounting plate; the lifting adjusting mounting plate is provided with a mounting hole, a screw nut penetrates through the mounting hole, the lifting screw penetrates through the screw nut and can rotate along threads in the screw nut to generate up-and-down displacement, and the whole chuck assembly is finely adjusted upwards or downwards;

the first fine adjustment mechanism is connected below the auxiliary guide rail mounting plate.

Preferably, the lift lead screw top is equipped with manual carousel, rotates this manual carousel and drives the lift lead screw at the screw-nut internal rotation, the auxiliary rail mounting panel with still set up 1 at least supplementary telescoping device between the lift adjustment mounting panel, supplementary telescoping device bottom is connected on the auxiliary rail mounting panel, the top is connected in lift adjustment mounting panel or middle part and is passed the lift adjustment mounting panel.

Preferably, reinforcing ribs are arranged on the sides of the lifting adjusting mounting plate.

The beneficial effects produced by the utility model are as follows.

(1) The X-direction coarse adjustment is carried out through the main lifting rod and the transverse moving rod, the Z-direction coarse adjustment is carried out through the matching of the main lifting rod, the mounting groove and the electrode rod, the X-direction fine adjustment and the Y-direction fine adjustment are carried out through the first fine adjustment mechanism and the second fine adjustment mechanism, and the Z-direction fine adjustment is carried out through the third fine adjustment mechanism, so that the X-direction coarse adjustment and the Z-direction fine adjustment are simple in structure, and the operation is convenient, time-saving and labor-saving for workers.

(2) The method can be suitable for thickness adjustment and thickness calibration of the electrode position of the electric discharge machine before cutting of dies with different sizes and shapes, and has strong adaptability and high accuracy. An electric spark machine can be according to actual demand, 2 chuck electrodes that 2 chuck subassemblies correspond cut 2 hole sites of same mould simultaneously at a cutting process, perhaps can also cut 2 hole sites on 2 moulds respectively simultaneously, and the cutting process is mutually independent, and cutting time shortens half, effectively promotes the cutting efficiency of mould.

Drawings

Fig. 1 is a front view of the overall structure of a first embodiment of the present invention.

Fig. 2 is a left side view of the overall structure of the first embodiment of the present invention.

Fig. 3 is a top view of the overall structure of the first embodiment of the present invention.

FIG. 4 is a side view of the traverse bar.

Fig. 5 is a schematic top view of the circled portion in fig. 4.

Fig. 6 is a schematic diagram of an adjustment method of the first embodiment of the present invention.

Fig. 7 is a front view showing the overall structure of the second embodiment of the present invention.

Fig. 8 is a perspective view illustrating the overall structure of the second embodiment of the present invention.

Description of the figure numbers:

11 main lifting rods, 12 lifting adjusting mounting plates and 13 reinforcing ribs; 21 a first adjusting screw rod, 22 a first slide rail, 23 a first slide block and 24 a first screw rod seat; 31 guide rail mounting plate, 32 chuck mounting plate, 321 chucks, 33 auxiliary guide rail mounting plate, 34 lifting screw rods, 341 manual turntables, 35 screw rod nuts and 36 telescopic devices; 41 a second adjusting screw rod, 42 a second slide rail, 43 a second slide block and 44 a second screw rod seat; 51 guide sleeve, 52 transverse rod, 521 mounting groove, 53 clamping piece and 54 connector; 61 electrode rods, 62 electrodes; and a mold 7.

Detailed Description

The utility model discloses a double-chuck adjusting device of an electric discharge machine, and the first embodiment shown in figure 1 comprises a main lifting rod 11, the bottom of which is connected with a lifting adjusting mounting plate 12. The main lift lever 11 serves as a Z-axis of the spark machine, and can greatly raise and lower the position of the spark machine when necessary.

Reinforcing ribs 13 may be provided at sides of the elevation adjustment mounting plate 12. 2 groups of chuck assemblies are arranged below the lifting adjusting mounting plate 12, and all the 2 groups of chuck assemblies can realize the adjustment in the X direction, the Y direction and the Z direction shown in figure 6. In the figure, the adjustment includes: fine adjustment A in the Z direction, coarse adjustment B in the Z direction, fine adjustment C in the X direction, coarse adjustment D in the X direction and fine adjustment E in the Y direction.

Each group of chuck components at least comprises a first fine adjustment mechanism and a second fine adjustment mechanism, and the middle parts of the first fine adjustment mechanism and the second fine adjustment mechanism are fixed at intervals through guide rail mounting plates 31. The adjustment directions of the first fine adjustment mechanism and the second fine adjustment mechanism are perpendicular to each other, and in the first embodiment shown in fig. 1 to 6, the first fine adjustment mechanism realizes Y-direction fine adjustment, the second fine adjustment mechanism realizes X-direction fine adjustment, or certainly, the first fine adjustment mechanism can realize X-direction fine adjustment, and the second fine adjustment mechanism realizes Y-direction fine adjustment (not shown in the figure), which is determined according to the needs of the actual production process.

The first fine adjustment mechanism comprises a first adjusting screw 21, 2 first screw seats 24, 2 groups of first slide rails 22 and first slide blocks 23 which are matched with each other to slide. 2 first sliders 23 and 2 first screw seats 24 are fixed on the bottom surface of the lifting adjusting mounting plate 12, and the 2 first screw seats 24 are located between the 2 first sliders 23. Two ends of the first adjusting screw 21 are respectively arranged on the 2 first screw seats 24 in a penetrating way. 2 first slide rail 22 is slidable connection respectively on 2 first sliders 23, and 2 first slide rails 22 are listed in the both sides of first accommodate the lead screw 21 this moment, and the axial direction of first accommodate the lead screw 21 is the same with the slip direction, and the side of first accommodate the lead screw 21 contacts with the first slide rail 22 of both sides, the latch of mutually having the cooperation block for when rotatory first accommodate the lead screw 21, first slide rail 22 can take place relative slip with first slider 23. The lower part of the first slide rail 22 is connected with a guide rail mounting plate 31.

The second fine adjustment mechanism comprises a second adjusting screw 41, 2 second screw seats 44, 2 groups of second slide rails 42 and second slide blocks 43 which are matched with each other to slide. The 2 second sliders 43 and the 2 second screw holders 44 are fixed to the bottom surface of the rail mounting plate 31, and the 2 second screw holders 44 are located between the 2 second sliders 43. Both ends of the second adjusting screw 41 are respectively installed on 2 second screw seats 44. The 2 second sliding rails 42 are respectively slidably connected to the 2 second sliding blocks 43, at this time, the 2 second sliding rails 42 are respectively arranged on two sides of the second adjusting screw rod 41, the axial direction of the second adjusting screw rod 41 is the same as the sliding direction, the side surfaces of the second adjusting screw rod 41 are in contact with the second sliding rails 42 on the two sides, and the two second sliding rails 42 and the second sliding blocks 43 are mutually engaged with each other to slide relatively when the second adjusting screw rod 41 is rotated. The chuck mounting plate 32 is attached to the underside of the second slide rail 42.

Of course, the position relationship between the slide block, the slide rail, the screw rod and the screw rod seat in the first fine adjustment mechanism and the second fine adjustment mechanism may have other deformation modes, such as the up-down position exchange between the slide rail and the slide block, the connection of the screw rod seat to the lower plate, etc., which are all the deformation designs that can be made by those skilled in the art according to the above structures, and are within the scope of the present invention.

In the first embodiment shown in fig. 1, the bottom surface of the cartridge mounting plate 32 is coupled to the cartridge 321. The bottom of the chuck 321 extends downwards out of the guide sleeve 51, a through hole is arranged on the guide sleeve 51, the transverse rod 52 penetrates through the guide sleeve 51, and the clamping piece 53 is inserted into the through hole to fix the position of the transverse rod 52. The other end of the traverse rod 52 includes a lateral mounting groove 521 for mounting the electrode rod 61.

In the left-hand cartridge assembly of fig. 1, the cartridge assembly is mounted as above, and the right-hand cartridge assembly is connected to the elevation adjustment mounting plate 12 through a third fine adjustment mechanism of the Z-axis. Specifically, the third fine adjustment mechanism includes an auxiliary rail mounting plate 33 and a lifting screw 34, and the bottom end of the lifting screw 34 is rotatably connected to the auxiliary rail mounting plate 33. The lifting adjusting mounting plate 12 is provided with a mounting hole, a screw nut 35 is arranged in the mounting hole in a penetrating manner, and the lifting screw 34 upwards penetrates through the screw nut 35. The top of the lifting screw rod 34 can be provided with a manual rotating disc 341, and the manual rotating disc 341 is rotated to drive the lifting screw rod 34 to rotate in the screw rod nut 35, so that the position of the left chuck assembly can be finely adjusted upwards or downwards integrally. A telescopic device 36 can be further disposed between the auxiliary rail mounting plate 33 and the lifting adjusting mounting plate 12 to assist in maintaining the spacing and stability therebetween, and can be respectively mounted at 4 corners of the auxiliary rail mounting plate 33 as shown in the figure. The first slider 23 and the first screw base 24 are mounted on the bottom surface of the auxiliary rail mounting plate 33.

In the first embodiment described above, the guide bush 51 and the traverse bar 52 movable laterally therein are used for coarse adjustment in the X direction, the traverse bar 52 cooperates with the electrode bar 61 mountable therein for coarse adjustment in the Z direction, the first fine adjustment mechanism is used for fine adjustment in the Y direction, the second fine adjustment mechanism is used for fine adjustment in the X direction, and the elevation screw 34 is used for fine adjustment in the Z direction. But whether a third fine adjustment mechanism of the Z axis needs to be arranged can be selectively arranged according to the actual production requirement.

In the second embodiment shown in fig. 7 and 8, the electrode rod 61 and the electrode 62 are attached in a different manner from the first embodiment. The bottom of the clamping head 321 is connected with a detachable connector 54, an electrode rod 61 is inserted into the bottom of the connector 54, and the electrode 62 is positioned at the bottom of the electrode rod 61. In this embodiment, the rough adjusting structure below the chuck 321 is not included, but the electrode rod 61 extending vertically downward is directly connected below the chuck 321, and electrode cutting heads of different specifications can be used to process 2 molds of different specifications, which are not affected by each other and are independent of each other.

In the above embodiments, the first fine-tuning devices are all Y-axis fine-tuning devices, and the second fine-tuning devices are X-axis fine-tuning devices, and in addition, when the first fine-tuning devices are all X-axis fine-tuning devices and the second fine-tuning devices are Y-axis fine-tuning devices, the first and second fine-tuning devices in the above embodiments are adaptively configured to be interchanged. In addition, the relative positions of the sliding block and the sliding rail in the sliding assembly may also be adaptively changed according to actual situations, or other moving devices capable of realizing relative displacement may be adopted, which is not specifically illustrated here.

The process of actually cutting the die will be described below by taking the first embodiment shown in fig. 1 to 6 as an example.

(1) After the mold 7 is placed, the main lift rod 11 is adjusted to adjust the position of the left side chuck assembly to a suitable position above the mold so that the distance between the left side electrode 62 and the mold 7 is within the range of the fine and coarse adjustments of the above structure.

(2) Adjusting the position of the traverse rod 52 in the guide sleeve 51 to perform rough adjustment in the X direction of the corresponding electrode 62; the mounting position of the electrode rod 61 in the mounting groove 521 is adjusted, and Z-direction rough adjustment of the corresponding electrode 62 is performed.

(3) The manual turntable 341 is rotated to raise or lower the Z-axis position of the right chuck assembly so that the positions of the left and right 2 electrodes are substantially at the same horizontal plane.

(4) The first lead screw 21 of each of the 2 chuck groups is rotated to perform fine adjustment in the Y direction of the corresponding electrode 62, and the second lead screw 41 is rotated to perform fine adjustment in the X direction of the corresponding electrode 62.

(5) And (3) checking whether the electrode 62 reaches the required position and is accurate, and if a certain deviation exists, adjusting any one of the steps (1) to (4) according to the requirement until the position meets the requirement.

After the adjustment, the positions of the 2 electrodes 62 are in the same horizontal plane and in proper positions above the die 7, and the chuck and the electrodes are started to cut.

Claims

1. The utility model provides a two chuck adjusting device of electric spark machine, its characterized in that contains main lifter (11), lift adjustment mounting panel (12) is connected to its bottom, 2 groups of chuck subassemblies set up side by side under this lift adjustment mounting panel (12), every group chuck subassembly contains adjustment direction mutually perpendicular's first fine-tuning and second fine-tuning at least, it is fixed that the interval is passed through guide rail mounting panel (31) in the middle of the two, chuck mounting panel (32) and chuck (321) fixed connection are passed through to second fine-tuning bottom, chuck (321) bottom is connected with electrode (62).

2. The double-chuck adjusting device for the electric discharge machine according to claim 1, wherein the first fine adjustment mechanism comprises a first adjustment screw (21), at least 1 first screw seat (24), and at least 1 set of first sliding assemblies sliding in cooperation with each other, the first sliding assemblies being mounted between the elevation adjustment mounting plate (12) and the guide rail mounting plate (31), the at least 1 first screw seat (24) being fixed to the bottom surface of the elevation adjustment mounting plate (12) or the top surface of the guide rail mounting plate (31), the first adjustment screw (21) being mounted on the first screw seat (24), the first adjustment screw (21) being in contact with the first sliding assemblies and having a plurality of engaging teeth, such that the first sliding assemblies slide with each other when the first adjustment screw (21) is rotated;

the second fine adjustment mechanism comprises a second adjusting screw rod (41), at least 1 second screw rod seat (44) and at least 1 group of second sliding assemblies which are matched with each other to slide, the second sliding assemblies are installed between the guide rail installation plate (31) and the chuck installation plate (32), the at least 1 second screw rod seat (44) is fixed on the bottom surface of the guide rail installation plate (31) or the top surface of the chuck installation plate (32), the second adjusting screw rod (41) is in contact with the second sliding assemblies and is provided with mutually matched clamping teeth, and therefore the second sliding assemblies can slide relatively when the second adjusting screw rod (41) is rotated.

3. The double-chuck adjusting device of the electric discharge machine according to claim 2, wherein the first fine adjustment mechanism comprises 2 first screw rod seats (24) and 2 sets of first sliding assemblies, each set of first sliding assemblies is a first sliding rail (22) and a first sliding block (23) which are matched with each other to slide, the first sliding rail (22) is installed on the bottom surface of the lifting adjustment installation plate (12), the first sliding block (23) is installed on the top surface of the guide rail installation plate (31), or the first sliding block (23) is installed on the bottom surface of the lifting adjustment installation plate (12), the first sliding rail (22) is installed on the top surface of the guide rail installation plate (31), the 2 first screw rod seats (24) are located between the 2 sets of first sliding assemblies, two ends of the first adjustment screw rod (21) are respectively installed on the 2 first screw rod seats (24), the first adjustment screw rod (21) is in contact with the first sliding rails (22) on two sides and has matched teeth, so that the first slide rail (22) moves along with the first adjusting screw rod (21) when the first adjusting screw rod is rotated;

the second fine adjustment mechanism comprises 2 second lead screw seats (44) and 2 groups of second sliding components, each group of second sliding components is a second sliding rail (42) and a second sliding block (43) which are matched with each other to slide, the second slide rail (42) is arranged on the bottom surface of the guide rail mounting plate (31), the second slide block (43) is arranged on the top surface of the chuck mounting plate (32), or the second sliding block (43) is arranged on the bottom surface of the guide rail mounting plate (31), the second sliding rail (42) is arranged on the top surface of the chuck mounting plate (32), the 2 second screw rod seats (44) are positioned between the 2 groups of second sliding assemblies, two ends of the second adjusting screw rod (41) are respectively arranged on the 2 second screw rod seats (44), the second adjusting screw rod (41) is contacted with the second slide rails (42) at two sides and is provided with mutually matched latch, so that the second slide rail (42) moves relatively when the second adjusting screw rod (41) is rotated.

4. The electric discharge machine double cartridge adjusting device according to any one of claims 1 to 3, wherein the bottom of the cartridge (321) is extended downward from a guide sleeve (51), a traverse bar (52) is inserted into the guide sleeve (51), a fastener (53) is inserted into a through hole of the guide sleeve (51) to fix one end of the traverse bar (52), a lateral mounting groove (521) is formed in the other end of the traverse bar (52), an electrode rod (61) is inserted into the mounting groove (521), and the electrode (62) is positioned at the bottom of the electrode rod (61).

5. The electric discharge machine double-chuck adjusting device according to any one of claims 1 to 3, characterized in that the bottom of the chuck (321) is connected with a detachable connector (54), an electrode rod (61) is arranged in the bottom of the connector (54), and the electrode (62) is positioned at the bottom of the electrode rod (61).

6. The electric discharge machine double-chuck adjusting device according to any one of claims 1 to 3, wherein 1 or 2 of the chuck assemblies are mounted on the lifting adjusting mounting plate (12) through a third fine adjustment mechanism, the third fine adjustment mechanism comprises an auxiliary guide rail mounting plate (33), a lifting screw rod (34), and the bottom end of the lifting screw rod (34) is rotatably connected to the auxiliary guide rail mounting plate (33);

the lifting adjusting mounting plate (12) is provided with a mounting hole, a screw nut (35) penetrates through the mounting hole, the lifting screw (34) penetrates through the screw nut (35) and can rotate along the screw thread to generate vertical displacement, and the whole chuck assembly is finely adjusted upwards or downwards;

the first fine adjustment mechanism is connected below the auxiliary guide rail mounting plate (33).

7. The electric discharge machine double-chuck adjusting device according to claim 6, characterized in that a manual rotating disc (341) is provided on the top of the lifting screw (34), the manual rotating disc (341) is rotated to drive the lifting screw (34) to rotate in the screw nut (35), at least 1 auxiliary telescopic device (36) is further provided between the auxiliary guide rail mounting plate (33) and the lifting adjusting mounting plate (12), the bottom end of the auxiliary telescopic device (36) is connected to the auxiliary guide rail mounting plate (33), the top end of the auxiliary telescopic device is connected to the lifting adjusting mounting plate (12), or the middle part of the auxiliary telescopic device passes through the lifting adjusting mounting plate (12).

8. The electric discharge machine double-chuck adjusting device according to claim 1, wherein the sides of the elevation adjusting mounting plate (12) are provided with reinforcing ribs (13).