An electric discharge machining electrode fixture device and an electric discharge machine

Abstract

An embodiment of the present invention discloses an electric discharge machining electrode fixture device and an electric discharge machine tool. The fixture device includes: an angle correction mechanism, a connection mechanism, a connection plate, a rotating disk, and a chuck. The chuck is installed at the lower end of the connection mechanism through the angle correction mechanism. The upper end of the connection mechanism is connected to the connection plate, and the other end of the connection plate is connected to the rotating disk. The rotating disk is used to connect to the machine tool spindle. The adjustment of the connection plate relative to the rotating disk is the first-level adjustment, the self-angle adjustment of the connection mechanism is the second-level adjustment, and the angle adjustment of the chuck driven by the angle correction mechanism relative to the connection mechanism is the third-level adjustment. Moreover, the accuracies of the first-level adjustment, the second-level adjustment, and the third-level adjustment increase in sequence. The present invention provides an electric discharge machining electrode fixture device, which realizes multi-level angle adjustment of the electrode through three-level adjustment. Among them, the first-level adjustment provides a large-range adjustment, the second-level adjustment optimizes the angle alignment, and the third-level adjustment realizes high-precision fine adjustment, thereby ensuring a uniform discharge gap between the electrode and the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of electric discharge machining, and more specifically, to an electric discharge electrode fixture device and an electric discharge machine equipment. Background Art

[0002] A chuck is usually installed at the bottom of the spindle of an electric discharge forming machine tool. Its main function is to clamp the forming electrode, and through the reciprocating movement of the spindle up and down, make the electrode contact the surface of the workpiece, so as to realize electric discharge forming machining. In addition to the basic clamping function, the chuck also needs to have the ability to adjust the angle to adapt to different shaped forming electrodes and their processing requirements.

[0003] In CN118559461A, an angle adjustment mechanism and a fixture adjustment seat having the same are disclosed. The angle adjustment mechanism drives the main adjustment screw to rotate by setting an actuating element, and synchronously drives the two angle adjustment devices to move, so as to accurately adjust the deflection angle of the fixture around the Z-axis.

[0004] In CN118578147A, a height adjustment mechanism and a fixture debugging support seat having the same are disclosed. The height adjustment mechanism adopts the structure of an elastic element and a height adjustment device, and can adjust the levelness of the workpiece in real time.

[0005] In the above two patent solutions, although the chuck has a certain rotation adjustment function, its adjustment range and accuracy still have limitations, and it is difficult to meet the clamping and processing requirements of various complex electrodes. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems in the related art to a certain extent. For this purpose, an embodiment of the present invention provides an electric discharge electrode fixture device, which realizes multi-level angle adjustment of the electrode through a three-level adjustment structure. Among them, the first-level adjustment provides a large range of adjustment, the second-level adjustment optimizes the angle alignment, and the third-level adjustment realizes high-precision fine adjustment, so as to ensure uniform discharge gaps between the electrode and the workpiece, and improve the machining accuracy and surface quality.

[0007] An embodiment of the present invention also provides an electric discharge machine equipment having the above electric discharge electrode fixture device.

[0008] The technical solution adopted by the present invention is as follows: A wire - cut electrode fixture device is provided, including: an angle correction mechanism, a connection mechanism, a connection plate, a rotating disk, and a chuck. The chuck is installed at the lower end of the connection mechanism through the angle correction mechanism. The upper end of the connection mechanism is connected to one end of the connection plate. The connection mechanism can adjust its own angle. The other end of the connection plate is connected to the rotating disk in a limit - movable manner. The rotating disk is used to connect to the machine tool spindle. Among them, the angle adjustment of the connection plate relative to the rotating disk is the first - level adjustment, the angle adjustment of the connection mechanism is the second - level adjustment, and the angle adjustment of the angle correction mechanism driving the chuck relative to the connection mechanism is the third - level adjustment. And the precision of the first - level adjustment, the second - level adjustment, and the third - level adjustment increases in turn.

[0009] After adopting the above structure, the wire - cut electrode fixture device can achieve a wider angle adjustment range and provide finer adjustment precision to meet the clamping and processing requirements of complex electrodes. Specifically, through the three - level adjustment structure, this device can adjust the angle of the chuck at different levels, enabling the electrode to obtain more accurate positioning in multiple directions, ensuring that the discharge gap between the electrode and the workpiece during the processing is more uniform, thereby improving the processing precision and surface quality.

[0010] First of all, the first - level adjustment depends on the relative movement between the connection plate and the rotating disk, which can achieve a large - range angle adjustment to adapt to different types of processing tasks. This level of adjustment is mainly used for the preliminary angle setting of the electrode and is suitable for rough positioning.

[0011] Secondly, the second - level adjustment is provided by the connection mechanism, which can perform fine - tuning of the angle within a small range to further optimize the angle setting of the electrode and ensure that it maintains a better alignment with the workpiece surface. This adjustment method improves the flexibility of the clamping process and makes the pre - processing debugging more efficient.

[0012] Finally, the third - level adjustment acts on the chuck through the angle correction mechanism to achieve high - precision fine - tuning, enabling the final position of the electrode to meet high - precision requirements, thus meeting the needs of precision processing. In summary, through the multi - level angle adjustment structure, combined with the fine - adjustment mechanism and optimized mechanical design, the present invention overcomes the problems of limited adjustment range and insufficient precision of the existing chuck, enabling the wire - cut machining equipment to complete the processing of complex - shaped electrodes more efficiently and accurately, and further improving the processing quality and production efficiency.

[0013] According to an embodiment of the present invention, the angle correction mechanism includes a hollow directional rotation block, a first X-axis adjustment screw column, and a second X-axis adjustment screw column. The directional rotation block is axially connected to the chuck and can rotate relative to the chuck around the axis. The first X-axis adjustment screw column and the second X-axis adjustment screw column are arranged in a V-shape, and both are threadedly connected to the directional rotation block. Their inner ends respectively abut against both ends of the sector-shaped boss at the upper end of the chuck. By screwing in or out the first X-axis adjustment screw column and / or the second X-axis adjustment screw column, the whole chuck is pushed to rotate relative to the directional rotation block, thereby realizing fine adjustment of the angle of the chuck. This adjustment method utilizes the principle of screw drive, magnifies the adjustment effect through a small rotational movement, enables the operator to precisely control the rotational angle of the electrode around the Z-axis, and improves the machining accuracy.

[0014] According to an embodiment of the present invention, the directional rotation block is provided with a special-shaped groove. The first X-axis adjustment screw column and the second X-axis adjustment screw column are respectively threadedly connected to the side walls of the special-shaped groove, and the outer periphery of the sector-shaped boss is rotatably fitted in the special-shaped groove.

[0015] According to an embodiment of the present invention, the angle correction mechanism further includes an adjustment support plate. The upper end of the adjustment support plate is connected to the connection mechanism and is connected to the directional rotation block through a spherical central axis. A plurality of Z-axis springs are provided between the adjustment support plate and the directional rotation block, so that the adjustment support plate is floatingly installed on the upper part of the directional rotation block. Four Z-axis adjustment screw columns are obliquely threadedly connected to the adjustment support plate, and their inner ends abut against the conical surface at the upper end of the directional rotation block. By screwing in or out the Z-axis adjustment screw columns, the directional rotation block is pushed to swing relative to the adjustment support plate to adjust the level. In order to enhance the stability of the adjustment process, the bottom of the directional rotation block is provided with a special-shaped groove, which is rotatably fitted with the outer periphery of the sector-shaped boss of the chuck, so that the chuck can maintain a stable rotation trajectory during angle adjustment, avoiding affecting the machining accuracy due to deviation or shaking during the adjustment process. At the same time, the threaded connection structure of the first X-axis adjustment screw column and the second X-axis adjustment screw column can provide a certain self-locking function, ensuring that the chuck can be firmly held at the set angle after adjustment and will not be displaced due to vibration or external force.

[0016] A plurality of Z-axis springs are arranged between the adjustment support plate and the directional rotation block to form a floating installation structure to adapt to the fine adjustment requirements in different directions. This elastic support design can provide an appropriate buffering effect during the adjustment process, reduce the frictional resistance during adjustment, make the adjustment smoother, and can effectively absorb the vibration that may occur during machining, improving the stability of the clamping system.

[0017] Four Z-axis adjusting screw posts are also arranged on the adjusting support plate, and their ends are in contact with the conical surfaces at the upper ends of the directional rotating blocks. The operator can further control the tilting angle of the directional rotating blocks by adjusting the screwing in or out of the screw posts, so as to achieve high-precision swing adjustment of the chuck in the Z-axis direction, in order to achieve the leveling of the chuck.

[0018] According to an embodiment of the present invention, the plurality of Z-axis springs are distributed at the four corners, and the number of Z-axis springs at one corner is greater than that at the other three corners, thus forming an asymmetric elastic support structure to enhance the adjustment sensitivity and stability in a specific direction. This design enables the springs in different directions to provide different supporting forces during the adjustment process, thereby affecting the tilting trend of the directional rotating block, facilitating the operator to obtain more precise angle control during fine adjustment. Among them, the corner with a larger number of Z-axis springs can provide stronger elastic support to offset the eccentric load effect that may occur during the processing, ensuring the stable posture of the electrode during electrical discharge machining. The number of Z-axis springs in the other three triangular regions is relatively small, so that only the corresponding three Z-axis adjusting screw posts need to be adjusted during leveling. And / or

[0019] A scale is provided between the directional rotating block and the adjusting support plate for indicating the relative angle between the two.

[0020] According to an embodiment of the present invention, a ring-shaped support block is rotatably mounted at the upper end of the directional rotating block, and the inner top surface of the directional rotating block abuts against the upper end of the ring-shaped support block; a first ring of steel balls is provided between the directional rotating block and the chuck, and a second ring of steel balls is provided between the ring-shaped support block and the chuck, thus forming a double-layer rolling support structure, which can effectively reduce the frictional resistance during the rotation adjustment process and improve the flexibility and stability of the angle adjustment.

[0021] Among them, the first ring of steel balls is located between the directional rotating block and the chuck, enabling the chuck to rotate smoothly around the axis, while reducing the wear caused by direct contact and improving the service life of the overall structure. The second ring of steel balls is located between the ring-shaped support block and the chuck, further optimizing the support effect and providing a uniform force distribution for the ring-shaped support block during the rotation of the chuck, thereby ensuring the smoothness of the adjustment.

[0022] According to an embodiment of the present invention, the ring-shaped support block is axially connected to the chuck through a hollow screw post and a first connecting nut and can rotate axially relative to the chuck; the first connecting nut is threadedly connected with a first headless screw, and the end of the first headless screw abuts against the end of the first connecting nut to realize the limit fixation of the ring-shaped support block.

[0023] According to an embodiment of the present invention, the connection mechanism includes a hollow fixed column and a hollow rotating column. The upper end portion of the rotating column is inserted into the interior of the fixed column and can rotate integrally relative to the fixed column. Ball head screws are respectively provided at the four corners of the outer circumference of the fixed column. The ball head screws pass through the side wall of the fixed column and abut against the outer circumference of the rotating column to achieve the limitation and locking of the rotating column. Thus, after adjusting the angle, the rotating column can be reliably fixed to avoid angle deviation caused by external force or machine tool vibration.

[0024] Among them, the arrangement of the ball head screws ensures that the rotating column has stable support during rotation and can maintain high coaxiality after locking. Due to the point contact characteristic of the ball head screws, compared with ordinary flat-end screws, they can provide a more uniform force distribution during the locking process, reduce local stress concentration, thereby reducing the wear on the surface of the rotating column and improving the structural durability.

[0025] According to an embodiment of the present invention, a connecting pipe is provided on the connecting plate. One end of the connecting pipe is externally connected to a gas source, and the other end sequentially passes through the connecting plate, the connection mechanism and the angle correction mechanism and communicates with the interior of the chuck to drive the chuck to switch between the clamped state and the released state, thereby realizing automatic clamping and release of pneumatic control and improving the convenience and stability of clamping.

[0026] Among them, the arrangement of the connecting pipe ensures that the gas source can be smoothly transmitted to the interior of the chuck, avoiding damage to the connecting pipe caused by the exposed connecting pipe during wire electrical discharge machining, and can effectively protect the connecting pipe.

[0027] A wire electrical discharge machine device includes a machine tool spindle and the wire electrical discharge electrode fixture device described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a perspective view of the wire electrical discharge machine device in the embodiment of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the wire electrical discharge machine device in the embodiment of the present invention.

[0031] Figure 3 It is an exploded view of the angle correction mechanism in the embodiment of the present invention.

[0032] Figure 4It is the top view of the angle correction mechanism in the embodiment of the present invention.

[0033] Figure 5 It is Figure 4 the cross-sectional view taken along line A-A in

[0034] Figure 6 It is the structural schematic diagram of the angle correction mechanism in the embodiment of the present invention.

[0035] Figure 7 It is the three-dimensional view of the directional rotation block in the embodiment of the present invention.

[0036] Figure 8 It is the connection schematic diagram of the adjusting support plate in the embodiment of the present invention.

[0037] Figure 9 It is the three-dimensional structural diagram of the angle correction mechanism in the embodiment of the present invention.

[0038] Figure 10 It is the three-dimensional view of the angle correction mechanism in the embodiment of the present invention.

[0039] Figure 11 It is the bottom view of the angle correction mechanism in the embodiment of the present invention.

[0040] Figure 12 It is Figure 11 the cross-sectional view taken along line B-B in

[0041] Figure 13 It is the exploded view of the angle correction mechanism in the embodiment of the present invention.

[0042] Figure 14 It is the connection schematic diagram of the hollow screw column in the embodiment of the present invention.

[0043] Figure 15 It is the structural diagram of the electric discharge machine equipment in the embodiment of the present invention.

[0044] Figure 16 It is the three-dimensional view of the connection mechanism in the embodiment of the present invention.

[0045] Description of the reference numerals in the figure:

[0046] 10. Angle correction mechanism; 20. Connection mechanism; 30. Connection plate; 40. Rotating disk; 50. Chuck; 60. Connecting pipe;

[0047] 11. Adjusting support plate; 12. Directional rotation block; 13. Annular support block; 14. Z-axis adjusting screw column; 15. Z-axis spring; 16. First X-axis adjusting screw column; 17. Second X-axis adjusting screw column; 18. X-axis spring; 19. Spherical center axis; 110. Positioning steel ball; 111. First steel ball; 112. First bearing; 113. Hollow screw column; 114. Second steel ball; 115. First connection nut; 116. First headless screw

[0048] 11a. Through hole; 11b. Scale

[0049] 12a. Arc-shaped groove; 12b. Special-shaped groove

[0050] 17a. External thread

[0051] 21. Fixed column; 22. Rotating column; 23. Ball head screw; 24. Third steel ball; 25. Second bearing; 26. Connecting column; 27. Second connection nut; 28. Second headless screw

[0052] 31. Limit bolt

[0053] 41. Outer step

[0054] 51. Main body; 52. Base; 53. Inner lining sleeve; 54. Floating spring; 55. Locking steel ball; 56. Rivet

[0055] 51a. Sector-shaped boss Detailed implementation mode

[0056] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention. Embodiment 1

[0057] As Figure 1-16As shown, in this embodiment, an electric discharge electrode fixture device is disclosed, including: an angle correction mechanism 10, a connection mechanism 20, a connection plate 30, a rotating disk 40, and a chuck 50. The chuck 50 is installed at the lower end of the connection mechanism 20 through the angle correction mechanism 10. The upper end of the connection mechanism 20 is connected to one end of the connection plate 30. The connection mechanism 20 can adjust the angle. The other end of the connection plate 30 is connected to the rotating disk 40 in a limited movement manner. The rotating disk 40 is used to connect to the machine tool spindle. Among them, the angle adjustment of the connection plate 30 relative to the rotating disk 40 is the first-level adjustment, the angle adjustment of the connection mechanism 20 is the second-level adjustment, and the angle adjustment of the angle correction mechanism 10 driving the chuck 50 relative to the connection mechanism 20 is the third-level adjustment. The above three-level adjustment methods decrease in working radius in sequence and increase in adjustment accuracy in sequence. For example, in this embodiment, the working radius of the first-level adjustment is about 1 m, which is suitable for rough adjustment in a large range; the working radius of the second-level adjustment is about 10 cm, which is used for adjustment in a medium range; the working radius of the third-level adjustment is about 1 cm, which is used for high-precision fine adjustment. In other embodiments, the working radii of each level of adjustment can also be set according to actual application requirements. The above values are only preferred examples and do not constitute a limitation on the protection scope of the present invention.

[0058] Further, in this embodiment, the rotating disk 40 is installed in a detachable manner and can be flexibly installed on the machine tool spindle. To ensure the fastening between the connection plate 30 and the rotating disk 40, one end of the connection plate 30 is fixed to the rotating disk 40 through a fastening bolt. When the fastening bolt is loosened, the connection plate 30 can adjust the angle relative to the rotating disk 40 to adapt to the processing requirements under different working conditions.

[0059] In addition, to improve the limiting and anti-falling performance of the rotating disk 40, a limiting bolt 31 is specifically provided on the connection plate 30, and a circumferential outer step 41 structure is machined on the outer circumference of the rotating disk 40. When the connection plate 30 is fixed to the rotating disk 40, the head of the limiting bolt 31 and the step surface of the outer step 41 are in an upper and lower misaligned state, thus providing a reliable limiting effect. In the case of loosening the fastening bolt, the head of the limiting bolt 31 rests on the step surface of the outer step 41, playing an effective supporting role to prevent the device from accidentally falling. In this state, without the aid of additional lifting equipment, the operator can manually rotate the connection plate 30 to complete the angle adjustment between the connection plate 30 and the rotating disk 40, greatly improving the operation convenience.

[0060] Furthermore, in this embodiment, in order to enhance the stability and adjustability of the connecting mechanism 20, the connecting mechanism 20 is specially suspended and installed at the lower part of the end of the connecting plate 30 away from the rotating disk 40. The lower end of the connecting mechanism 20 is connected to the angle correction mechanism 10, and the lower end of the angle correction mechanism 10 is used to install the chuck 50. In this way, by rotating the connecting plate 30, a large-range position adjustment of the chuck 50 relative to the machine tool spindle can be achieved.

[0061] After the large-range adjustment is completed, the limit movement adjustment function of the connecting mechanism 20 itself is further utilized for finer adjustment. Specifically, the connecting mechanism 20 includes a fixed part and a movable part. The movable part can rotate around its own axis relative to the fixed part, thereby realizing the rough adjustment of the chuck 50 around its own axis. After the rough adjustment is completed, by adjusting the angle correction mechanism 10, the chuck 50 can be finely adjusted around its own axis, so as to meet the positioning requirements of higher precision.

[0062] Specifically, as shown in Figure 3-12 In this embodiment, the angle correction mechanism 10 includes a hollow directional rotation block 12, a first X-axis adjustment screw column 16 and a second X-axis adjustment screw column 17. The directional rotation block 12 is axially connected to the chuck 50 and can rotate axially relative to the chuck 50, so as to realize precise angle adjustment.

[0063] The first X-axis adjustment screw column 16 and the second X-axis adjustment screw column 17 are arranged in a V-shaped pattern and are both threadedly connected to the directional rotation block 12. Their inner ends respectively abut against both ends of the sector-shaped boss 51a at the upper end of the chuck 50. By screwing in or out the first X-axis adjustment screw column 16 and / or the second X-axis adjustment screw column 17, the whole chuck 50 can be pushed to rotate and adjust relative to the directional rotation block 12 to meet the processing requirements at different angles.

[0064] In addition, the directional rotation block 12 is provided with a special-shaped groove 12b. The first X-axis adjustment screw column 16 and the second X-axis adjustment screw column 17 are respectively threadedly connected to the side wall of the special-shaped groove 12b through external threads 17a, and the outer periphery of the sector-shaped boss 51a is rotatably fitted in the special-shaped groove 12b, so that the rotation of the chuck 50 is more stable and smooth.

[0065] The angle correction mechanism 10 further includes an adjustment support plate 11. The upper end of the adjustment support plate 11 is connected to the connecting mechanism 20 and is connected to the directional rotation block 12 through a spherical central shaft 19, thereby allowing multi-angle adjustment. A plurality of Z-axis springs 15 are provided between the adjustment support plate 11 and the directional rotation block 12, so that the adjustment support plate 11 can be floatingly installed on the upper part of the directional rotation block 12 to improve the adjustment precision and stability.

[0066] The multiple Z-axis springs 15 are distributed at the four corners, and the number of Z-axis springs 15 at one corner is more than that at the other three corners. This special arrangement can provide a larger adjustment range and make the adjustment more flexible and precise. In addition, a scale 11b is provided between the directional rotation block 12 and the adjustment support plate 11 to indicate the relative angle between the two, facilitating intuitive adjustment by the operator.

[0067] Further, in this embodiment, the adjustment support plate 11 is reliably connected to the lower end of the connection mechanism 20 through fasteners. Four Z-axis adjustment screw columns 14 are obliquely threadedly connected to the upper end of the adjustment support plate 11, and these Z-axis adjustment screw columns 14 are inclined toward the central axis side of the adjustment support plate 11 to provide more uniform adjustment support. The heads of the Z-axis adjustment screw columns 14 are located outside the adjustment support plate 11, and their inner ends extend deep into the adjustment support plate 11 and are in close contact with the arc-shaped grooves 12a of the directional rotation block 12.

[0068] The directional rotation block 12 is fixedly connected to the annular support block 13 through fasteners, and its upper end has an inclined conical surface. Four arc-shaped grooves 12a are provided on this conical surface, and the inner ends of the Z-axis adjustment screw columns 14 are tightly abutted against the arc-shaped grooves 12a to provide precise adjustment positioning.

[0069] During the adjustment process, six Z-axis springs 15 are provided between the adjustment support plate 11 and the directional rotation block 12. Positioning steel balls 110 are provided at both the upper and lower ends of each Z-axis spring 15. These positioning steel balls 110 are respectively embedded in six corresponding blind holes at the upper ends of the adjustment support plate 11 and the directional rotation block 12, thereby ensuring the fixation and precise adjustment of the Z-axis springs 15.

[0070] Among them, four Z-axis springs 15 are arranged at the four corners, and the other two Z-axis springs 15 are arranged near one of the corners, so that only one Z-axis spring 15 is provided at three of the four corners, and the remaining one corner has three Z-axis springs 15 to provide stronger support elasticity. Such a design enables, when adjusting the chuck 50 to be horizontal, only adjusting the three Z-axis adjustment screw columns 14 with a single Z-axis spring 15, thereby achieving more stable and efficient angle adjustment.

[0071] Further, in this embodiment, a hemispherical stepped hole is provided at the lower end of the directional rotation block 12, and the spherical central axis 19 passes through this stepped hole and is connected to the adjustment support plate 11. This design not only ensures the axial locking of the directional rotation block 12 to the adjustment support plate 11, but also enables the horizontal angle of the adjustment support plate 11 to be precisely adjusted to meet different processing requirements.

[0072] In addition, the outer periphery of the directional rotation block 12 is horizontally threadedly connected with a first X-axis adjustment screw column 16 and a second X-axis adjustment screw column 17, and the two are arranged in a V shape. Among them, the front end of the second X-axis adjustment screw column 17 has a smooth shaft portion, and an X-axis spring 18 is sleeved at this position. One end of the X-axis spring 18 abuts against the second X-axis adjustment screw column 17, and the other end is in close contact with one end of the sector-shaped boss 51a. In this way, when the first X-axis adjustment screw column 16 is rotated out, the boosting effect of the X-axis spring 18 will push the sector-shaped boss 51a, causing it to drive the chuck 50 to rotate counterclockwise relative to the directional rotation block 12. After rotating to the appropriate position, then screw in the second X-axis adjustment screw column 17 to tighten against the sector-shaped boss 51a, and the angle locking can be completed.

[0073] Similarly, when adjusting the angle of the chuck 50 clockwise, first withdraw the second X-axis adjustment screw column 17. With the assistance of the X-axis spring 18, one end of the sector-shaped boss 51a will always be in tight contact with the inner end of the first X-axis adjustment screw column 16. Then tighten the first X-axis adjustment screw column 16 to push the sector-shaped boss 51a, causing it to drive the chuck 50 to rotate clockwise relative to the directional rotation block 12. After rotating to the appropriate angle, then tighten the second X-axis adjustment screw column 17 to complete the locking.

[0074] Specifically, an annular support block 13 is rotatably installed at the upper end of the directional rotation block 12, and the inner top surface of the directional rotation block 12 is closely attached to the upper end of the annular support block 13 to provide an additional support structure. The annular support block 13 is axially connected to the chuck 50 through a hollow screw column 113 and a first connecting nut 115, enabling it to rotate axially relative to the chuck 50. In addition, a mating groove is provided at the upper end of the chuck 50, and a ring of second steel balls 114 is embedded in the bottom annular groove to ensure that the annular support block 13 can rotate smoothly. A first bearing 112 is provided inside the annular support block 13, making its outer ring tightly fit with the inner wall of the upper end opening of the annular support block 13, and the inner ring tightly fit with the hollow screw column 113 to provide a smoother rotational support.

[0075] To prevent the first connecting nut 115 from loosening, a screw hole is provided in the first connecting nut 115, and a first headless screw 116 is threadedly connected in the screw hole. The inner end of the screw passes through the first connecting nut 115 and is in close contact with the end of the hollow screw column 113, thereby enhancing the overall stability. In addition, an annular groove is provided at the lower end of the directional rotation block 12, and a ring of first steel balls 111 is embedded. After the directional rotation block 12 is fixedly connected to the chuck 50, the first steel balls 111 keep rolling contact with the upper end of the chuck 50 to effectively reduce friction and improve the flexibility of rotational adjustment.

[0076] Combined with Figure 11-13As shown, in this embodiment, the chuck 50 adopts a pneumatic chuck 50, and its overall structure is optimized, including a main body 51, a base 52, an inner sleeve 53, a floating spring 54 and a circle of locking steel balls 55. The upper end of the main body 51 is provided with a fan-shaped boss 51a, and the lower end is fixedly connected to the base 52 to form a sealed cavity. The inner sleeve 53 can move axially in the sealed cavity and divide the sealed cavity into two sealed spaces. The movement of the inner sleeve 53 can be achieved by pumping gas into one sealed space and exhausting gas into the other sealed space. The inner sleeve 53 has at least a locking position and a releasing position. A plurality of floating springs 54 are located between the inner sleeve 53 and the base 52, and have an elastic tendency to maintain the inner sleeve 53 in the locking position. The locking steel ball 55 is embedded in the annular groove and axially locks the pull pin 56 when the inner sleeve 53 is in the locking position; when the inner sleeve 53 is in the loosening position, the locking steel ball 55 moves radially outward to release the lock of the pull pin 56 so that it can be smoothly removed, further improving the operational convenience and processing accuracy.

[0077] Specifically, combined Figure 15-16 As shown, in this embodiment, the connection mechanism 20 includes a hollow fixed column 21 and a hollow rotating column 22, wherein the upper end portion of the rotating column 22 is inserted into the interior of the fixed column 21 and can rotate as a whole around the axis of the fixed column 21. In order to ensure the stability and controllability of the rotation, ball screws 23 are evenly distributed at the four corners of the outer periphery of the fixed column 21, and the ball screws 23 pass through the side walls of the fixed column 21 in sequence, and the inner ends thereof are tightly against the outer peripheral surface of the rotating column 22 to provide reliable positioning and locking effects.

[0078] In addition, a connecting tube 60 is provided on the connecting plate 30, one end of the connecting tube 60 is connected to an external gas source, and the other end passes through the connecting plate 30, the connecting mechanism 20 and the angle correction mechanism 10 in sequence, and finally communicates with the interior of the chuck 50. Through the gas delivery function of the connecting tube 60, the chuck 50 can be driven to switch freely between the clamping state and the loosening state, thereby realizing automatic clamping and releasing of pneumatic control, and improving the convenience, reliability and stability of the overall clamping process. Accordingly, a through hole 11a is provided on the adjustment support plate 11 for the connecting tube 60 to pass through.

[0079] The connecting mechanism 20 includes a fixed column 21 and a rotating column 22, which are coaxially arranged. Among them, one of the fixed column 21 and the rotating column 22 is fixedly connected to the connecting plate 30, and the other is fixedly connected to the chuck 50 to ensure the stability and functional integrity of the entire device. In addition, a third steel ball 24 is provided between the fixed column 21 and the rotating column 22 to reduce friction during rotation and ensure a smoother adjustment effect. A connecting column 26 is passed through the inside of the fixed column 21, and a second connecting nut 27 is installed in the rotating column 22 with a limit. The second connecting nut 27 is threadedly connected to the connecting column 26, thereby realizing the axial locking of the fixed column 21 and the rotating column 22. In addition, in order to further optimize the rotation adjustment performance, a second bearing 25 is also provided between the fixed column 21 and the connecting column 26. The function of this bearing is to reduce friction during the rotation adjustment process and improve the smoothness and adjustment accuracy of rotation.

[0080] To ensure the stability of the fixed column 21, the fixed column 21 is firmly installed at the lower part of the connecting plate 30 through four connecting bolts, thereby forming a stable support structure. The inside of the fixed column 21 is a hollow structure, and its inner wall protrudes radially to form an inner step. Correspondingly, the inside of the rotating column 22 is also a hollow structure and is provided with a secondary step, that is, the outer peripheral surface of the rotating column 22 sequentially forms a primary step surface and a secondary step surface. The second bearing 25 is sleeved on the connecting column 26. Specifically, the inner ring of the second bearing 25 is closely fitted with the connecting column 26, and the outer ring is fitted with the inner hole of the fixed column 21 to ensure good rotation performance. In addition, the third steel ball 24 is arranged between the inner step and the primary step surface to enhance the stability during rotation.

[0081] When the fixed column 21 is connected to the rotating column 22, the end of the fixed column 21 abuts against the secondary step surface of the rotating column 22, thereby forming a reliable mechanical limit structure. At the same time, four screw holes are evenly distributed on the outer periphery of the fixed column 21, and the ball head screws 23 are connected to these screw holes by threads. The ball head at the inner end of the ball head screw 23 abuts tightly against the rotating column 22 to provide a firm locking effect. In order to further optimize the rotation adjustment performance, the head of the connecting column 26 abuts against the upper end of the second bearing 25, and the lower end of the second bearing 25 abuts against the inner step of the fixed column 21. Through this multi-level support design, it can be ensured that the rotating column 22 obtains a more stable support during rotation, thereby significantly improving the accuracy and stability of the entire connecting mechanism 20.

[0082] Further, with reference to the drawings, the outer surface of the second connecting nut 27 is provided with threads, and a second button head screw 28 is threadedly connected thereto. The inner end of the second button head screw 28 passes through the second connecting nut 27 and abuts against the end of the connecting column 26 to provide an additional anti-loosening fixing function, ensuring that the entire mechanism will not become loose due to vibration or external force during long-term use.

[0083] To provide a more stable locking function, the inner end of the ball head screw 23 passes through the fixing column 21 and abuts against the outer peripheral surface of the rotating column 22, thereby achieving effective locking and preventing the rotating column 22 from undergoing unexpected relative rotation with respect to the fixing column 21. To ensure uniform distribution of the locking force, the four ball head screws 23 are arranged at annular intervals along the axial direction of the fixing column 21, thereby ensuring that the rotating column 22 can obtain more uniform force support during the rotation adjustment process.

[0084] Correspondingly, at least four positioning grooves arranged at annular intervals are provided on the surface of the rotating column 22, and the inner end of the ball head screw 23 tightly abuts against the positioning grooves, thereby further enhancing the stability of the rotating shaft in the locked state. This design can effectively prevent rotational deviation during actual application, improving the overall accuracy and service life of the device.

[0085] In this embodiment, the usage method of the electric discharge electrode fixture device includes the following steps:

[0086] Step 1: Loosen the fastening bolt. One end of the connecting plate 30 drops due to central offset, causing the head of the limit bolt 31 to rest on the outer step 41 of the rotating disk 40. Subsequently, rotate the connecting plate 30. After adjusting it to the approximate position, tighten the limit bolt 31.

[0087] Step 2: Loosen the four ball head screws 23 on the connecting mechanism 20, and rotate the rotating column 22 so that the rotating column 22 drives the chuck 50 to rotate circumferentially relative to the fixing column 21, making the scale 11b face forward, that is, in front of the operator. After the chuck 50 is adjusted to the approximate angle, tighten the four ball head screws 23 to complete the rough adjustment of the rotation angle of the chuck 50.

[0088] Step 3: Adjust the chuck 50 according to the rotation direction. Through the cooperation of the X-axis adjustment screw column and with the assistance of the X-axis spring 18, the sector-shaped boss 51a drives the chuck 50 to rotate counterclockwise or clockwise. Finally, by tightening the corresponding X-axis adjustment screw column, the fine adjustment of the rotation angle of the chuck 50 is achieved.

[0089] Step 4: Loosen or tighten the four Z-axis adjustment screw columns 14 to complete the horizontal zeroing of the chuck 50 and ensure its stability and accuracy.

[0090] In another embodiment, an electric discharge machine device is disclosed, including a machine tool spindle and the electric discharge electrode fixture device described in this embodiment.

[0091] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present invention.

[0092] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0093] In the present invention, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation on the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An electric spark electrode fixture device, characterized in that: include: An angle correction mechanism, a connecting mechanism, a connecting plate, a rotating disk and a chuck, wherein the chuck is installed at the lower end of the connecting mechanism through the angle correction mechanism, the upper end of the connecting mechanism is connected to one end of the connecting plate, the connecting mechanism itself can adjust the angle, the other end of the connecting plate can be limitedly and movably connected to the rotating disk, and the rotating disk is used to connect the machine tool spindle; wherein the angle adjustment of the connecting plate relative to the rotating disk is primary adjustment, the angle adjustment of the connecting mechanism is secondary adjustment, and the angle correction mechanism drives the chuck to adjust the angle relative to the connecting mechanism to three levels of adjustment, and the precision of the primary adjustment, the secondary adjustment and the third level adjustment increases in sequence; The angle correction mechanism comprises a hollow directional rotation block, a first X-axis adjustment screw column and a second X-axis adjustment screw column, wherein the directional rotation block is axially connected to the chuck and can rotate axially relative to the chuck; the first X-axis adjustment screw column and the second X-axis adjustment screw column are arranged in an eight-shaped shape and are both threadedly connected to the directional rotation block, and the inner ends thereof are respectively tightly abutted against the two ends of the fan-shaped boss at the upper end of the chuck, and the chuck is driven to rotate relative to the directional rotation block as a whole by screwing in or out the first X-axis adjustment screw column and / or the second X-axis adjustment screw column; The angle correction mechanism also includes an adjusting support plate, the upper end of which is connected to the connecting mechanism and is connected to the directional rotating block through a spherical central axis; a plurality of Z-axis springs are provided between the adjusting support plate and the directional rotating block, so that the adjusting support plate is floatingly mounted on the upper part of the directional rotating block; four Z-axis adjusting screw columns are obliquely threadedly connected to the adjusting support plate, the inner ends of which abut against the conical surface at the upper end of the directional rotating block, and the directional rotating block is pushed to swing and adjust the level relative to the adjusting support plate by screwing in or out the Z-axis adjusting screw column.

2. The electric spark electrode fixture device according to claim 1, characterized in that: The directional rotating block is provided with a special-shaped groove, the first X-axis adjusting screw column and the second X-axis adjusting screw column are respectively threadedly connected to the side walls of the special-shaped groove, and the outer periphery of the fan-shaped boss is rotatably matched in the special-shaped groove.

3. The electric spark electrode fixture device according to claim 1, characterized in that: The multiple Z-axis springs are distributed in four corners, wherein the number of Z-axis springs in one corner is greater than the number of Z-axis springs in the remaining three corners; and / or a scale is provided between the directional rotating block and the adjustment support plate to indicate the relative angle between the two.

4. The electric spark electrode fixture device according to claim 1, characterized in that: An annular support block is rotatably mounted on the upper end of the directional rotating block, and the inner top surface of the directional rotating block is tightly against the upper end of the annular support block; a first circle of steel balls is provided between the directional rotating block and the chuck, and a second circle of steel balls is provided between the annular support block and the chuck.

5. The electric spark electrode fixture device according to claim 4, characterized in that: The annular support block is axially connected to the chuck through a hollow screw column and a first connecting nut, and can rotate axially relative to the chuck; the first connecting nut is threadedly connected with a first headless screw, and the end of the first headless screw is tightly against the end of the first connecting nut to achieve limited fixation of the annular support block.

6. The electric spark electrode fixture device according to claim 1, characterized in that: The connecting mechanism includes a hollow fixed column and a hollow rotating column, the upper end portion of the rotating column is inserted into the interior of the fixed column and can rotate as a whole relative to the fixed column; ball head screws are respectively provided at the outer four corners of the fixed column, and the ball head screws pass through the side wall of the fixed column and tightly abut against the outer periphery of the rotating column to achieve limiting and locking of the rotating column.

7. The electric spark electrode fixture device according to claim 1, characterized in that: A connecting pipe is provided on the connecting plate, one end of which is connected to an external air source, and the other end of which passes through the connecting plate, the connecting mechanism and the angle correction mechanism in sequence, and is connected to the interior of the chuck to drive the chuck to switch between a clamped state and a loosened state.

8. An electric spark machine device, characterized in that: It comprises a machine tool spindle and the electric spark electrode fixture device as described in any one of claims 1-7.

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