Grinding head of electric discharge machine and electric discharge machine

Abstract

The utility model provides an electric discharge machine grinding head which comprises a main body piece, a fixing piece and a locking piece, a first groove is formed in the side face of the main body piece, the fixing piece is arranged on the side face of the main body piece, a second groove is formed in the position, corresponding to the first groove, of the fixing piece, and a fixing position matched with a tool electrode is defined by the first groove and the second groove; the locking piece is connected with the main body piece and the fixing piece; the tool electrode is placed at the fixing position, the locking piece pushes the fixing piece to approach the main body piece, and the tool electrode is locked and fixed at the fixing position; the utility model further provides the electric discharge machine. Due to the fact that the fixing position is matched with the tool electrode in size, when the tool electrode is locked and fixed to the fixing position, the main body piece and the fixing piece surround the tool electrode, pressure borne by the tool electrode is evenly dispersed, the tool electrode is prevented from being extruded to deform, the service life of the tool electrode is prolonged, in addition, a plurality of tool electrodes can be fixed at the same time, and use is convenient. And a plurality of workpieces can be machined at a time by being matched with a multi-station workpiece clamp, so that the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spark machining, in particular to an electric spark machine grinding head and an electric spark machine. Background Art

[0002] As one of the common mechanical processing equipment, EDM machine is widely used in the manufacture of various metal molds and mechanical equipment. During the EDM machining process, the tool electrode and the workpiece are connected to the two poles of the pulse power supply respectively and immersed in the working fluid. The pulse power supply generates high-frequency electric pulse discharge, which breaks down the working fluid in the gap between the electrode and the workpiece, forming a discharge channel. This channel generates extremely high temperature in a very short time, causing the local material to melt or gasify quickly, thereby achieving material removal.

[0003] In order to ensure that the EDM machine can process the workpiece normally, it is necessary to ensure that the tool electrode and the workpiece always maintain a positive positional relationship. Therefore, in reality, a clamp is often used to fix the position of the tool electrode. However, most of the existing electrode clamps fix the tool electrode in the clamp by bolts. At this time, one end of the bolt will directly squeeze the tool electrode. If the squeezing force is insufficient, the tool electrode will not be firmly fixed. If the squeezing force is too large, the tool electrode will easily be squeezed and deformed by the bolt. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides an electric spark machine grinding head and an electric spark machine.

[0005] The present application discloses an electric spark machine grinding head comprising: a main body, a fixing part and a locking part, wherein a first groove is provided on a side surface of the main body, the fixing part is provided on the side surface of the main body, a second groove is provided on the fixing part at a position corresponding to the first groove, and the first groove and the second groove form a fixing position adapted to a tool electrode; the locking part connects the main body and the fixing part; the tool electrode is placed in the fixing position, the locking part is adjusted, the locking part pushes the fixing part close to the main body, and the tool electrode is locked and fixed in the fixing position.

[0006] Preferably, a first threaded hole is also provided on the side of the main body, and a second threaded hole is provided on the fixing member, one end of the second threaded hole is connected to the first threaded hole, and the other end of the second threaded hole is located on the outer surface of the fixing member; a thread is provided on the outer surface of the locking member, and the locking member is screwed into the first threaded hole and the second threaded hole, and the locking member is rotated to make the main body and the fixing member approach or move away from each other.

[0007] Preferably, there are two fixing members, which are respectively arranged on two side surfaces of the main body, and first grooves are provided on both side surfaces of the main body.

[0008] Preferably, the number of the first threaded holes, the second threaded holes and the locking members are all four, wherein two first threaded holes are opened on one side of the main body, and the other two first threaded holes are opened on the other side of the main body; each fixing member is opened with two second threaded holes, and the four second threaded holes are respectively arranged corresponding to the four first threaded holes; the four locking members are respectively screwed to the four first threaded holes and the four second threaded holes.

[0009] Preferably, there are multiple first grooves and multiple second grooves, the multiple first grooves are respectively arranged on the two side surfaces of the main body, the multiple second grooves are respectively arranged on the two fixing members, and each second groove is respectively arranged corresponding to a first groove.

[0010] Preferably, the main body includes a connecting part and a mounting part, one end of the connecting part is connected to the electric spark machine, the mounting part is arranged at the other end of the connecting part, the first groove is opened on the side of the mounting part, and the fixing part is arranged on the side of the mounting part.

[0011] Preferably, a plurality of connection holes are formed at one end of the connection portion.

[0012] Preferably, the mounting portion is detachably connected to the other end of the connecting portion.

[0013] Preferably, the first groove and the second groove are both semicircular grooves, and the cross section of the tool electrode is circular.

[0014] The present application also provides an electric spark machine, comprising an equipment body, an electric spark machine grinding head and a workpiece fixture.

[0015] The beneficial effect of the present application is that since the fixing position on the EDM machine grinding head matches the size of the tool electrode, when the tool electrode is placed in the fixing position, the locking piece is adjusted, and the locking piece pushes the fixing piece close to the main body, thereby locking and fixing the tool electrode between the main body and the fixing piece, and the main body and the fixing piece surround the tool electrode, ensuring that the pressure on the tool electrode when it is locked and fixed can be evenly dispersed. Compared with the method of tightening with bolts, it avoids excessive concentration of pressure on a certain area of ​​the tool electrode, thereby avoiding squeezing and deformation of the tool electrode, thereby extending the service life of the EDM machine grinding head.

[0016] In addition, the EDM machine grinding head can lock and fix multiple tool electrodes at the same time. When combined with a multi-station workpiece fixture, it can simultaneously process multiple workpieces at one time, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1It is a structural schematic diagram of the EDM grinding head in the embodiment;

[0019] Figure 2 A bottom view of the EDM grinding head in the embodiment;

[0020] Figure 3 A schematic diagram of disassembly of a fixing member and a mounting portion in an embodiment;

[0021] Figure 4 Schematic diagram of the structure of the installation part in the embodiment.

[0022] Reference numerals:

[0023] 1. Main body; 11. Connecting part; 111. Connecting hole; 12. Mounting part; 121. First groove; 122. First threaded hole; 123. Protrusion; 2. Fixing part; 21. Second groove; 211. Fixing position; 22. Second threaded hole; 3. Locking part; 100. Tool electrode. DETAILED DESCRIPTION

[0024] The following will disclose multiple embodiments of the present application with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present application. In other words, in some embodiments of the present application, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0025] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, in the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0027] In order to further understand the application content, features and effects of the present application, the following embodiments are cited and described in detail with reference to the accompanying drawings.

[0028] Embodiment 1:

[0029] Reference Figure 1-4 , Figure 1 It is a structural schematic diagram of the EDM grinding head in the embodiment, Figure 2 It is a bottom view of the EDM grinding head in the embodiment, Figure 3 This is a schematic diagram of disassembly of the fixing member and the mounting portion in the embodiment. Figure 4 Schematic diagram of the structure of the mounting part in the embodiment. The EDM grinding head in this embodiment includes a main body 1, a fixing member 2 and a locking member 3. A first groove 121 is provided on the side of the main body 1. The fixing member 2 is provided on the side of the main body 1. A second groove 21 is provided on the fixing member 2 corresponding to the first groove 121. The first groove 121 and the second groove 21 form a fixing position 211 adapted to the tool electrode 100. The locking member 3 connects the main body 1 and the fixing member 2. The tool electrode 100 is placed in the fixing position 211, and the locking member 3 is adjusted. The locking member 3 pushes the fixing member 2 close to the main body 1, and the tool electrode 100 is locked and fixed in the fixing position 211.

[0030] The EDM grinding head in this embodiment is applied to an EDM machine, and the tool electrode 100 of the EDM machine is fixedly installed on the EDM grinding head. Since the fixing position 211 on the EDM grinding head matches the size of the tool electrode 100, when the tool electrode 100 is placed at the fixing position 211, the locking member 3 is adjusted, and the locking member 3 pushes the fixing member 2 close to the main body 1, so that the tool electrode 100 is locked and fixed between the main body 1 and the fixing member 2, and the main body 1 and the fixing member 2 surround the tool electrode 100, ensuring that the pressure on the tool electrode 100 when locked and fixed can be evenly dispersed. Compared with the method of tightening and fixing with bolts, it avoids excessive concentration of pressure on a certain area of ​​the tool electrode 100, thereby avoiding the tool electrode 100 from being squeezed and deformed, thereby extending the service life of the EDM grinding head. Moreover, when the tool electrode 100 is disassembled, since the tool electrode 100 is not deformed, the locking member 3 is adjusted to make the fixing member 2 away from the main body 1, and the tool electrode 100 can be removed. However, when the tool electrode 100 needs to be removed from the grinding head by tightening with bolts, the tool electrode 100 is deformed due to extrusion, which often causes the tool electrode 100 to be stuck in the grinding head and difficult to remove, which is time-consuming and laborious.

[0031] Re-reference Figure 1-4Preferably, the main body 1 includes a connecting portion 11 and a mounting portion 12. One end of the connecting portion 11 is connected to the EDM machine, and the mounting portion 12 is arranged at the other end of the connecting portion 11. The first groove 121 is provided on the side of the mounting portion 12, and the fixing member 2 is provided on the side of the mounting portion 12. In specific applications, the connecting portion 11 is a connecting block. A plurality of connecting holes 111 are provided at one end of the connecting portion 11 away from the tool electrode 100. The connecting holes 111 are threaded holes. In this embodiment, the number of the connecting holes 111 is four. The four connecting holes 111 are respectively provided at the four corners of one end of the connecting portion 11. The working end of the EDM machine is fixedly connected to the EDM machine by screws and threaded holes. Specifically, the connecting portion 11 also includes a connecting plate. A through hole is provided at the position of the connecting plate corresponding to the connecting hole 111. The connecting plate can be fixedly installed at the working end of the EDM machine. In this way, the screw passes through the through hole and is screwed to the connecting hole 111 to realize the fixed connection between the connecting portion 11 and the EDM machine. The connecting portion 11 and the fixing member 2 are both made of conductive materials.

[0032] Re-reference Figure 1-4 Preferably, the mounting portion 12 is detachably connected to the other end of the connecting portion 11. In specific applications, a groove is provided at one end of the connecting portion 11 facing the mounting portion 12, and a protrusion 123 is provided at a position corresponding to the groove of the mounting portion 12. The protrusion 123 can be inserted into the groove, and a threaded hole is provided on the side of the connecting portion 11. After the bolt passes through the threaded hole and squeezes the protrusion 123 of the mounting portion 12, the connecting portion 11 and the mounting portion 12 can be fixedly connected. The connecting portion 11 and the mounting portion 12 can be disassembled and separated by removing the bolt. Of course, in other embodiments, the connecting portion 11 and the mounting portion 12 are an integrally formed structure to improve the overall strength of the main body 1.

[0033] Re-reference Figure 1-4Preferably, a first threaded hole 122 is further provided on the side of the main body 1, and a second threaded hole 22 is provided on the fixing member 2, one end of the second threaded hole 22 is connected to the first threaded hole 122, and the other end of the second threaded hole 22 is located on the outer surface of the fixing member 2. A thread is provided on the outer surface of the locking member 3, and the locking member 3 is screwed into the first threaded hole 122 and the second threaded hole 22. The locking member 3 is rotated to make the main body 1 and the fixing member 2 move closer to or farther away from each other. It can be understood that when it is necessary to remove the tool electrode 100 from the grinding head, the locking member 3 is rotated to make the mounting portion 12 and the fixing member 2 move away from each other. At this time, the tool electrode 100 loses the squeezing force of the mounting portion 12 and the fixing member 2, and the operator can easily remove the tool electrode 100 from the grinding head. When the tool electrode 100 needs to be installed on the grinding head, the tool electrode 100 is placed in the fixing position 211, and the locking member 3 is rotated in the opposite direction, so that the mounting portion 12 gradually approaches the fixing member 2, and the mounting portion 12 and the fixing member 2 squeeze the tool electrode 100 to fix it on the grinding head. Since the size and shape of the fixing position 211 are adapted to the tool electrode 100, the squeezing force of the mounting portion 12 and the fixing member 2 on the tool electrode 100 can be evenly dispersed, and the locking member 3 does not directly act on the tool electrode 100, so as to avoid the tool electrode 100 from being squeezed and deformed, and can also improve the efficiency of installation and removal of the tool electrode 100. Specifically, the locking member 3 is a locking bolt.

[0034] Re-reference Figure 1-4 Preferably, the number of the fixing parts 2 is two, and the two fixing parts 2 are respectively arranged on the two sides of the main part 1, and the first grooves 121 are opened on both sides of the main part 1. In specific applications, the first grooves 121 are opened on both sides of the mounting portion 12, and the two fixing parts 2 are opened on the second grooves 21, so that multiple fixing positions 211 can be formed on the grinding head, and multiple tool electrodes 100 can be installed at one time, so as to process multiple workpieces at one time. Specifically, the number of the first grooves 121 and the second grooves 21 are both multiple, and the multiple first grooves 121 are respectively arranged on the two sides of the main part 1, and the multiple second grooves 21 are respectively arranged on the two fixing parts 2, and each second groove 21 is respectively arranged corresponding to a first groove 121. In this embodiment, the number of the first groove 121 and the second groove 21 are both four, of which two first grooves 121 are opened on one side of the mounting portion 12, and the other two first grooves 121 are opened on the other side of the mounting portion 12, and each fixing member 2 is opened with two second grooves 21, that is, the EDM grinding head in this embodiment can install four tool electrodes 100 at one time, and can also process four workpieces at the same time, thereby improving the processing efficiency of the workpieces. Of course, in other embodiments, different numbers of first grooves 121 and second grooves 21 can be set according to actual processing requirements, which is not limited here.

[0035] Re-reference Figure 1-4Preferably, the number of the first threaded holes 122, the second threaded holes 22 and the locking members 3 are all four, wherein two first threaded holes 122 are provided on one side of the main body 1, and the other two first threaded holes 122 are provided on the other side of the main body 1. Each fixing member 2 is provided with two second threaded holes 22, and the four second threaded holes 22 are respectively provided corresponding to the four first threaded holes 122. The four locking members 3 are respectively screwed to the four first threaded holes 122 and the four second threaded holes 22. In specific applications, the two first threaded holes 122 are respectively provided on one side of the mounting portion 12, and are respectively located near the two side edges, and the other two first threaded holes 122 are respectively provided on the other side of the mounting portion 12. In this way, each fixing member 2 is fixed by two locking members 3, which improves the stability of the connection between the fixing member 3 and the mounting portion 12, that is, improves the stability of the fixation of the tool electrode 100, avoids the shaking of the tool electrode 100 during the processing, and improves the processing quality and safety.

[0036] Re-reference Figure 1-4 Preferably, the first groove 121 and the second groove 21 are both semicircular grooves, and the cross section of the tool electrode 100 is circular. It can be understood that the tool electrode 100 in this embodiment is a cylindrical electrode, and the fixed position 211 surrounded by the first groove 121 and the second groove 21 is a circular groove, the size of the circular groove matches the tool electrode 100, when the tool electrode 100 is locked and fixed in the fixed position 211, the groove wall of the circular groove fits with the outer wall of the tool electrode 100 and surrounds the outer wall of the tool electrode 100, and the extrusion force on the tool electrode 100 is evenly dispersed. Of course, in other embodiments, the first groove 121 and the second groove 21 can also be other shapes, which can be determined according to the shape of the tool electrode 100 to be installed, and it is only necessary to ensure that the size and shape of the enclosed fixed position 211 are compatible with the tool electrode 100.

[0037] Embodiment 2:

[0038] The EDM machine in this embodiment includes an equipment body, an EDM grinding head in Embodiment 1, and a workpiece fixture. In specific applications, the EDM grinding head is connected to the equipment body through a connecting portion 11. The workpiece fixture is also provided on the equipment body, and the multiple tool electrodes 100 on the EDM grinding head are directly opposite to the multiple workpieces on the workpiece fixture. That is to say, the EDM machine in this embodiment can process multiple workpieces at the same time, thereby improving the workpiece processing efficiency. Specifically, the equipment body is the EDM machine tool body.

[0039] In summary, since the fixing position on the EDM grinding head matches the size of the tool electrode, when the tool electrode is placed in the fixing position, the locking piece is adjusted, and the locking piece pushes the fixing piece close to the main body, thereby locking and fixing the tool electrode between the main body and the fixing piece, and the main body and the fixing piece surround the tool electrode, ensuring that the pressure on the tool electrode when it is locked and fixed can be evenly dispersed. Compared with the method of tightening with bolts, it avoids excessive concentration of pressure on a certain area of ​​the tool electrode, thereby avoiding the tool electrode from being squeezed and deformed, and extending the service life of the EDM grinding head. In addition, the EDM grinding head can lock and fix multiple tool electrodes at the same time, and cooperate with the multi-station workpiece fixture to perform synchronous processing on multiple workpieces at one time, improving processing efficiency.

[0040] The above is only the implementation mode of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An electric spark machine grinding head, characterized in that: include: A main body (1), a fixing member (2) and a locking member (3), wherein a first groove (121) is provided on a side surface of the main body (1), the fixing member (2) is arranged on a side surface of the main body (1), a second groove (21) is provided on the fixing member (2) at a position corresponding to the first groove (121), the first groove (121) and the second groove (21) enclose a fixing position (211) adapted to a tool electrode (100); the locking member (3) connects the main body (1) and the fixing member (2); the tool electrode (100) is placed at the fixing position (211), and the locking member (3) is adjusted so that the locking member (3) pushes the fixing member (2) close to the main body (1), and the tool electrode (100) is locked and fixed at the fixing position (211).

2. The EDM grinding head according to claim 1, characterized in that: The main body (1) is also provided with a first threaded hole (122) on its side, and the fixing member (2) is provided with a second threaded hole (22), one end of the second threaded hole (22) is connected to the first threaded hole (122), and the other end of the second threaded hole (22) is located on the outer surface of the fixing member (2); the outer surface of the locking member (3) is provided with a thread, and the locking member (3) is screwed into the first threaded hole (122) and the second threaded hole (22), and the locking member (3) is rotated so that the main body (1) and the fixing member (2) are moved closer to or farther from each other.

3. The EDM grinding head according to claim 2, characterized in that: The number of the fixing members (2) is two, and the two fixing members (2) are respectively arranged on two side surfaces of the main body member (1), and both side surfaces of the main body member (1) are provided with a first groove (121).

4. The EDM grinding head according to claim 3, characterized in that: The number of the first threaded holes (122), the second threaded holes (22) and the locking members (3) are all four, wherein two of the first threaded holes (122) are provided on one side of the main body (1), and the other two of the first threaded holes (122) are provided on the other side of the main body (1); each of the fixing members (2) is provided with two of the second threaded holes (22), and the four second threaded holes (22) are respectively provided corresponding to the four first threaded holes (122); and the four locking members (3) are respectively threadedly connected to the four first threaded holes (122) and the four second threaded holes (22).

5. The EDM grinding head according to claim 3, characterized in that: The number of the first groove (121) and the number of the second groove (21) are both multiple, the multiple first grooves (121) are respectively arranged on the two side surfaces of the main body (1), the multiple second grooves (21) are respectively arranged on the two fixing members (2), and each second groove (21) is respectively arranged corresponding to a first groove (121).

6. The EDM grinding head according to claim 1, characterized in that: The main body (1) comprises a connecting portion (11) and a mounting portion (12); one end of the connecting portion (11) is connected to an electric spark machine; the mounting portion (12) is arranged at the other end of the connecting portion (11); the first groove (121) is formed on a side surface of the mounting portion (12); and the fixing member (2) is arranged on a side surface of the mounting portion (12).

7. The EDM grinding head according to claim 6, characterized in that: One end of the connecting portion (11) is provided with a plurality of connecting holes (111).

8. The EDM grinding head according to claim 6, characterized in that: The mounting portion (12) is detachably connected to the other end of the connecting portion (11).

9. The EDM grinding head according to claim 1, characterized in that: The first groove (121) and the second groove (21) are both semicircular grooves, and the cross section of the tool electrode (100) is circular.

10. An electric spark machine, characterized in that: It comprises an equipment body, an EDM grinding head as described in any one of claims 1 to 9, and a workpiece fixture.

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