Electrode clamping device for electric spark machine tool

Abstract

The utility model discloses an electrode clamping device for an electric spark machine tool, which relates to the technical field of electric spark machining and comprises a machine body, an electrode driving part is mounted at the end of the machine body, a chuck part for fixing an electrode bar is mounted at the bottom of the electrode driving part, and an assembly shell is arranged below the electrode driving part. Threaded plate bodies are symmetrically arranged at the upper end and the lower end of an inner cavity of the assembling shell, one end of each threaded plate body is connected with a connecting and fixing plate body, an adjustable insulating wheel set is installed on the surface of each connecting and fixing plate body, a fixed insulating wheel set is arranged at one end of the assembling shell, and a positioner is arranged above the assembling shell. The clamping force can be adjusted according to the size of the electrode, the swing amplitude is effectively reduced when the electrode rotates at a high speed, and therefore the electrodes of different specifications can be stably clamped, and high precision and high quality in the electric spark machining process are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric spark machining, and in particular relates to an electrode clamping device for an electric spark machining machine tool. Background Art

[0002] As a high-precision and high-efficiency metal processing method, EDM is widely used in precision mold manufacturing, aerospace, medical equipment and other fields. Its working principle is to generate high temperature through pulse discharge between the electrode and the workpiece, thereby melting and etching the workpiece material to achieve precise forming of the workpiece. However, during the EDM process, the stability of the electrode directly affects the processing accuracy and workpiece quality.

[0003] In the prior art, the electrode is usually fixed to the EDM machine by a clamping device, but when the electrode rotates at high speed, it is easy to swing due to the influence of centrifugal force and mechanical vibration. This swing will significantly reduce the discharge stability between the electrode and the workpiece, resulting in increased roughness of the machined surface and increased shape error of the workpiece, which seriously affects the machining accuracy and product quality. In addition, the diversity of electrode sizes also requires the clamping device to have good adaptability to meet the stable clamping requirements of electrodes of different diameters and lengths.

[0004] Therefore, the development of an electrode clamping device that can not only stably support electrodes of different specifications but also effectively suppress the rotation and swing of the electrode has important practical significance and broad application prospects for improving the overall performance of EDM machines and ensuring processing quality and production efficiency. Summary of the invention

[0005] The utility model aims to provide an electrode clamping device for an electric spark machining machine tool, which can adjust the clamping force according to the electrode size and has a stabilizing structure that effectively reduces the swing amplitude when the electrode rotates at high speed, thereby achieving stable clamping of electrodes of different specifications and ensuring high precision and high quality during the electric spark machining process.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: an electrode clamping device for an electric spark machining machine, comprising a machine body, an electrode driving part is installed at the end of the machine body, and a clamping part for fixing the electrode rod is installed at the bottom of the electrode driving part, an assembly shell is arranged below the electrode driving part, and threaded plates are symmetrically arranged at the upper and lower ends of the inner cavity of the assembly shell, and one end of the threaded plate is connected to a connecting plate, and an adjustable insulating wheel group is installed on the surface of the connecting plate, a fixed insulating wheel group is arranged at one end of the assembly shell, and a positioner is arranged above the assembly shell.

[0007] Preferably, a mounting base is provided on the surface of the electrode driving part, and a mounting groove cavity is provided at the bottom of the mounting base.

[0008] Preferably, a lifting member is provided at the rear side of the assembly shell, a connecting base is provided below the assembly shell, and a displacement member is mounted on the surface of the connecting base.

[0009] Preferably, a transmission gear is arranged in the middle of the inner cavity of the assembly shell, and an intermediate transmission gear is arranged at the rear side of the transmission gear, wherein the inner cavities of the transmission gear and the intermediate transmission gear are jointly sleeved with a transmission shaft body.

[0010] Preferably, a guide gear is meshingly connected below the middle transmission gear, and the guide gear is movably mounted in the inner cavity of the assembly shell through a shaft.

[0011] Preferably, opposite sides of the two threaded plates are respectively meshed with the intermediate transmission gear and the guide gear, and a mounting groove is formed through the inner surface of the connecting plate.

[0012] Preferably, the front and rear ends of the left side of the assembly shell are fastened with an arc-shaped shell by bolts, the other side of the arc-shaped shell is fastened with a side frame by bolts, and the fixed insulating wheel groups are two groups symmetrically arranged at the upper and lower ends of the inner cavity of the side frame.

[0013] Preferably, a stabilization auxiliary connection component is provided on one end of the surface of the connecting plate body, and the stabilization auxiliary connection component includes a coil spring portion, and the coil spring portion is composed of a coil spring and a tension coil rod.

[0014] Preferably, a screw member is disposed below the coil spring portion, and a screw sleeve is threadedly sleeved on the lower side of the surface of the screw member.

[0015] Preferably, the bottom of the screw sleeve is connected to the end of the arc-shaped adjustment plate, and the other end of the arc-shaped adjustment plate is movably connected to a side insulating wheel set via a shaft.

[0016] The utility model provides an electrode clamping device for an electric spark machining machine tool, which has the following advantages:

[0017] The electrode clamping device for an electric spark machining machine tool can make active contact with the surface of the electric rod and limit it under the cooperation of the adjustable insulating wheel group and the fixed insulating wheel group to prevent it from swinging during rotation, thereby increasing its service life. Under the further limitation of the side insulating wheel group, the stability of the adjustable insulating wheel group and the fixed insulating wheel group in contacting and limiting the electric rod is greatly improved, thereby stabilizing the electric rod during operation. At the same time, the adjustable insulating wheel group is set to an adjustable form, and its position is adjusted by using a threaded plate body, and before adjusting the adjustable insulating wheel group, a positioner is inserted into the electric rod In the chuck head, the size and position of the electric rod used in the simulated processing can assist the adjustable insulating wheel group in adjusting the position with the fixed insulating wheel group, so that it can adapt to the sizes of electric rods of different sizes. The side insulating wheel group is flexibly installed on the surface of the arc adjustment plate by utilizing the coil spring part, which can avoid the problem of the side insulating wheel group and the electric rod being unable to contact after adjusting the position of the adjustable insulating wheel group. Finally, the clamping force can be adjusted according to the electrode size, and the stabilizing structure can effectively reduce the swing amplitude when the electrode rotates at high speed, thereby realizing stable clamping of electrodes of different specifications and ensuring high precision and high quality during the electrospark machining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the overall structural schematic diagrams of the utility model.

[0020] Figure 2 This is the second schematic diagram of the overall structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the partial structure decomposition of the electrode clamping device of the utility model.

[0022] Figure 4 This is the second schematic diagram of the partial structure decomposition of the electrode clamping device of the utility model.

[0023] Figure 5 It is a schematic diagram of the structure of the threaded plate body etc. of the utility model.

[0024] Figure 6 It is a schematic diagram of the structure of the threaded plate body etc. of the utility model.

[0025] Figure 7It is a schematic diagram of a three-dimensional exploded cross-section of the structure of the stabilization auxiliary connection component of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the adjustable insulating wheel set of the utility model.

[0027] Fig. 9 This is a schematic diagram of the transmission shaft structure of the utility model.

[0028] Description of the markings in the figure:

[0029] 100, machine body; 110, processing table body; 120, electrode driving unit; 130, chuck unit; 140, mounting base.

[0030] 200, assembly shell; 201, lifting component; 202, connecting base; 203, displacement component; 210, transmission gear; 211, intermediate transmission gear; 212, guide gear; 213, transmission shaft; 2131, thread sleeve; 220, threaded plate; 230, connecting plate; 231, installation slot; 240, adjustable insulating wheel set.

[0031] 300, arc-shaped outer shell; 310, side frame; 320, fixed insulating wheel set.

[0032] 400, stabilization auxiliary connection assembly; 410, screw member; 411, screw sleeve; 420, coil spring portion; 430, arc-shaped adjustment plate; 440, side insulating wheel assembly.

[0033] 500, locator; 501, mounting seat. DETAILED DESCRIPTION

[0034] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0035] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 therefore cannot be understood as a limitation on the embodiments of the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0038] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0039] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of an electrode clamping device for an electric spark machining machine tool of the utility model in conjunction with the accompanying drawings.

[0040] like Figure 1-Figure 9 As shown, the utility model is an electrode clamping device for an EDM machine tool, comprising a machine body 100, an electrode driving part 120 is installed at the end of the machine body 100, and a clamping part 130 for fixing the electrode rod is installed at the bottom of the electrode driving part 120; a processing table 110 is installed at the end of the machine body 100, and a mounting base 140 is mounted on the surface of the electrode driving part 120. The mounting base 140 is installed on the surface of the machine body 100, and is used for auxiliary support of the machine body 100 and an assembly shell 200, etc., and a mounting groove cavity is opened at the bottom of the mounting base 140 for assembling a lifting component 201.

[0041] Specifically, an assembly shell 200 is arranged below the electrode driving part 120, and threaded plates 220 are symmetrically arranged at the upper and lower ends of the inner cavity of the assembly shell 200, and one end of the threaded plate 220 is connected to a connecting plate 230, and an adjustable insulating wheel set 240 is installed on the surface of the connecting plate 230, so that the threaded plate 220 moves the connecting plate 230 to drive the adjustable insulating wheel set 240 to move; a lifting member 201 is arranged at the rear side of the assembly shell 200, and a lifting member 202 is arranged below the assembly shell 200. A connecting base 202 is provided with a displacement member 203 on the surface of the connecting base 202, and an output end of the displacement member 203 is connected to the assembly shell 200, wherein the rear side of the connecting base 202 is connected to the output end of the lifting member 201, wherein the lifting member 201 is arranged in a mounting groove cavity on the mounting base 140, therefore, with the cooperation of the lifting member 201, the displacement member 203 and the connecting base 202, the lateral position and the vertical position of the assembly shell 200 are adjusted.

[0042] Specifically, a transmission gear 210 is arranged in the middle of the inner cavity of the assembly shell 200, and a center transmission gear 211 is arranged on the rear side of the transmission gear 210, wherein the inner cavities of the transmission gear 210 and the center transmission gear 211 are jointly sleeved with a transmission shaft 213, and the transmission shaft 213 is used to shift the transmission gear 210 and the center transmission gear 211 to make them rotate, and the front end of the transmission shaft 213 passes through the outside of the assembly shell 200 and is connected to a turning handle, wherein the surface of the transmission shaft 213 is movably connected to the connection with the assembly shell 200 through a bearing.

[0043] As a further optimization of this solution, the front end movable sleeve of the surface of the transmission shaft body 213 is provided with a sleeve rod, and the other end of the sleeve rod is connected to the surface of the assembly shell 200, wherein the front end of the surface of the transmission shaft body 213 and the surface of the sleeve rod are both provided with threads matching the wire sleeve 2131, and the surface of the transmission shaft body 213 is sleeved with the wire sleeve 2131. Therefore, when the rotating wire sleeve 2131 is connected to the threads on the transmission shaft body 213 and the sleeve rod, the mounting groove body 231 can be fixed to prevent the transmission shaft body 213 from rotating at will.

[0044] Specifically, the guide gear 212 is meshedly connected below the middle transmission gear 211, and the guide gear 212 is movably installed in the inner cavity of the assembly shell 200 through an axis rod; the opposite sides of the two threaded plates 220 are respectively meshed with the middle transmission gear 211 and the guide gear 212. Therefore, when the transmission gear 210 rotates, the guide gear 212 can be driven to rotate through the transmission shaft 213 and the middle transmission gear 211. When the middle transmission gear 211 and the guide gear 212 rotate, the two opposite threaded plates 220 can be driven to rotate.

[0045] Furthermore, the surface of the threaded plate body 220 is in sliding contact with the inner surface of the assembly shell 200 through the guide block, thereby increasing the stability of the threaded plate body 220 when sliding, and the inner surface of the connecting plate body 230 is penetrated by a mounting groove body 231 for installing the coil spring part 420.

[0046] Specifically, a fixed insulating wheel group 320 is provided at one end of the assembly shell 200, and the fixed insulating wheel group 320 and the adjustable insulating wheel group 240 are used to limit the activity of the electrode rod to prevent its working rotation from swinging; the front and rear ends of the left side of the assembly shell 200 are fastened with the arc shell 300 by bolts, and the surface of the arc shell 300 located on the front side is inlaid with a transparent observation window for observing the installation of the electric rod, and the other side of the arc shell 300 is fastened with a side frame 310 by bolts, and the fixed insulating wheel group 320 is two groups symmetrically arranged at the upper and lower ends of the inner cavity of the side frame 310.

[0047] As a further optimization of this solution, one end of the fixed insulating wheel group 320 is movably connected to an adjusting screw through a bearing, and one end of the adjusting screw passes through the outside of the side frame frame 310 and is threadedly connected to the connection therewith. Therefore, if the position of the fixed insulating wheel group 320 needs to be adjusted, it is only necessary to rotate the adjusting screw to drive the fixed insulating wheel group 320 to move.

[0048] Specifically, a positioner 500 is arranged above the assembly shell 200. There are multiple positioners 500 with different specifications, which are used to position the adjustable insulating wheel set 240 before adjustment and assist in adjusting the adjustable insulating wheel set 240 to a specified position. One end of the positioner 500 is clamped with a mounting seat 501, and the mounting seat 501 is installed on the surface of the mounting base 140, so as to provide auxiliary support when the positioner 500 is inserted into the clamping head 130 for positioning and centering.

[0049] Specifically, a stabilization auxiliary component 400 is provided at one end of the surface of the connecting plate body 230, and the stabilization auxiliary component 400 includes a coil spring portion 420, which is composed of a coil spring and a tension reel, the coil spring is wound around the outer surface of the tension reel, and the coil spring portion 420 is installed in the inner cavity of the mounting groove body 231, and one end of the coil spring is connected to the inner surface of the mounting groove body 231; a screw member 410 is provided below the coil spring portion 420, wherein the screw member 410 is connected to the tension reel on the coil spring portion 420, and a screw sleeve 411 is threadedly sleeved on the lower side of the surface of the screw member 410.

[0050] Specifically, the bottom of the screw sleeve 411 is connected to the end of the arc adjustment plate 430, and the arc adjustment plate 430 is composed of a fixed frame and a telescopic plate, which can adjust the length of the arc adjustment plate 430. The other end of the arc adjustment plate 430 is movably connected to the side insulating wheel group 440 through an axial rod. Therefore, under the cooperation of the adjustable insulating wheel group 240 and the fixed insulating wheel group 320, it can make active contact with the surface of the electric rod and limit it to prevent it from swinging during rotation. Under the further limitation of the side insulating wheel group 440, the stability of the adjustable insulating wheel group 240 and the fixed insulating wheel group 320 in resisting and limiting the electric rod is greatly improved, so as to stabilize the electric rod during work. At the same time, the adjustable insulating wheel group 240 is set to an adjustable form, which can adapt to the sizes of different electric rods.

[0051] The working principle of an electrode clamping device for an electric spark machining machine: This solution can make active contact with the surface of the electric rod and limit it under the cooperation of the adjustable insulating wheel group 240 and the fixed insulating wheel group 320 to prevent it from swinging during rotation and increase its service life. Under the further limitation of the side insulating wheel group 440, the stability of the adjustable insulating wheel group 240 and the fixed insulating wheel group 320 in contacting and limiting the electric rod is greatly improved, so as to stabilize the electric rod during operation; at the same time, the adjustable insulating wheel group 240 is set to an adjustable form, and its position is adjusted by using the threaded plate body 220, and before adjusting the adjustable insulating wheel group 240, a positioner 50 is used to adjust the position of the electric rod. 0 is inserted into the clamping part 130 to simulate the size and position of the electric shock rod used in the processing, which can assist the adjustable insulating wheel group 240 in adjusting the position with the fixed insulating wheel group 320, so that it can adapt to the sizes of different electric shock rods, and the side insulating wheel group 440 is flexibly mounted on the surface of the arc adjustment plate 430 by using the coil spring part 420, which can avoid the problem that the side insulating wheel group 440 and the electric shock rod cannot contact each other after the position of the adjustable insulating wheel group 240 is adjusted; finally, the clamping force can be adjusted according to the size of the electrode, and the stabilizing structure can effectively reduce the swing amplitude when the electrode rotates at a high speed, thereby realizing stable clamping of electrodes of different specifications, ensuring high precision and high quality in the process of electrospark machining.

[0052] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An electrode clamping device for an electric discharge machining machine tool, comprising a machine body (100), an electrode driving unit (120) being installed at the end of the machine body (100), and a clamping unit (130) for fixing an electrode rod being installed at the bottom of the electrode driving unit (120), characterized in that: An assembly shell (200) is arranged below the electrode driving unit (120), and threaded plates (220) are symmetrically arranged at the upper and lower ends of the inner cavity of the assembly shell (200), one end of the threaded plate (220) is connected to a connecting plate (230), and an adjustable insulating wheel group (240) is installed on the surface of the connecting plate (230), one end of the assembly shell (200) is provided with a fixed insulating wheel group (320), and a positioner (500) is arranged above the assembly shell (200).

2. The electrode clamping device for an electric discharge machine tool according to claim 1, characterized in that: A mounting base (140) is mounted on the surface of the electrode driving part (120), and a mounting groove cavity is opened at the bottom of the mounting base (140).

3. The electrode clamping device for an EDM machine tool according to claim 2, characterized in that: A lifting component (201) is arranged on the rear side of the assembly shell (200), a connecting base (202) is arranged below the assembly shell (200), and a displacement component (203) is mounted on the surface of the connecting base (202).

4. The electrode clamping device for an electric discharge machine tool according to claim 3, characterized in that: A transmission gear (210) is arranged in the middle of the inner cavity of the assembly housing (200), and a center transmission gear (211) is arranged at the rear side of the transmission gear (210), wherein a transmission shaft body (213) is sleeved together in the inner cavities of the transmission gear (210) and the center transmission gear (211).

5. The electrode clamping device for an electric spark machining machine tool according to claim 4, characterized in that: The lower portion of the intermediate transmission gear (211) is meshingly connected with a guide gear (212), and the guide gear (212) is movably mounted in the inner cavity of the assembly housing (200) via a shaft.

6. The electrode clamping device for an electric discharge machine tool according to claim 5, characterized in that: The opposite sides of the two threaded plates (220) are respectively meshed with the intermediate transmission gear (211) and the guide gear (212), and a mounting groove (231) is provided through the inner surface of the connecting plate (230).

7. The electrode clamping device for an electric discharge machine tool according to claim 6, characterized in that: The front and rear ends of the left side of the assembly shell (200) are both fastened to the arc-shaped shell (300) by bolts, and the other side of the arc-shaped shell (300) is fastened to the side frame (310) by bolts, and the fixed insulating wheel groups (320) are two groups symmetrically arranged at the upper and lower ends of the inner cavity of the side frame (310).

8. The electrode clamping device for an electric discharge machine tool according to claim 7, characterized in that: A stabilization auxiliary connection component (400) is provided at one end of the surface of the connecting plate body (230), and the stabilization auxiliary connection component (400) comprises a coil spring portion (420), and the coil spring portion (420) is composed of a coil spring and a tension coil rod.

9. The electrode clamping device for an electric discharge machine tool according to claim 8, characterized in that: A screw member (410) is disposed below the coil spring portion (420), and a screw sleeve (411) is threadedly sleeved on the lower side of the surface of the screw member (410).

10. The electrode clamping device for an electric discharge machine tool according to claim 9, characterized in that: The bottom of the screw sleeve (411) is connected to the end of the arc-shaped adjustment plate (430), and the other end of the arc-shaped adjustment plate (430) is movably connected to a side insulating wheel set (440) via a shaft.

Images