A spark machine processing device based on contour trajectory

Abstract

The utility model belongs to spark machining technical field especially, relate to a spark machining device based on contour trajectory, in view of the problem that existing difficult processing deep cavity, large area's reverse buckle structure, present and propose the following scheme, including device shell, the lower end of device shell is connected with fixed link, the lower end fixed link is fixed with electrode body, the lower side swing joint of fixed link has the workpiece body that needs processing, the inside of workpiece body is provided with the cavity that needs processing. The utility model discloses through being set up on the installation rod of device shell, inserts the installation rod into the clamping piece, tightens fixed bolt, and then the device is connected with the output shaft of driving equipment, is driven the device operation through machine tool equipment, makes the electrode body of fixed link end insert workpiece body, and then processes the cavity in workpiece body, and machine tool equipment can realize macro program trajectory, and adds tool compensation when feeding, and removes tool compensation when withdrawing, realizes the transition processing of rough machining, finishing, and improves processing efficiency.

Description

Technical Field

[0001] This utility model relates to an EDM (Electrical Discharge Machining) device, specifically an EDM device based on a contour-following trajectory, belonging to the field of EDM technology. Background Technology

[0002] EDM backing is a special process in electrical discharge machining (EDM) primarily used to handle machining requirements for molds or workpieces with backing structures. Backing refers to reverse steps, grooves, or protrusions in the workpiece or mold cavity (i.e., the structural direction is opposite to the mold opening direction or the conventional machining direction). These structures are difficult to machine directly using traditional milling, grinding, or other machining methods because the cutting tool would interfere with the workpiece and could not directly reach the machining surface. EDM backing requires a specially designed irregularly shaped electrode. The electrode penetrates the backing area through a specific trajectory, gradually removing excess material to precisely form the backing area.

[0003] An existing patent (publication number: CN214769503U) discloses a fully automatic CNC EDM machining device, which includes a device base. A machining structure is fixedly welded and installed on the top of the device base. An oil inlet structure is fixedly installed on one side of the upper surface of the device base, and a filter and recovery structure is fixedly connected and installed on one side of the oil inlet structure. The device base includes a load-bearing base plate, casters, a lifting base, a lifting rod, a working oil tank, and an oil inlet interface. The machining structure includes a support column, a wiring cabinet, a data interface group, a machining head, a machining electrode head, an imaging screen, and a device switch. It draws cooling oil from the oil storage tank through an oil extraction pipe and transports it to the working oil tank through an oil delivery pipe to flush, cool, insulate, and remove slag from the machining area. However, in actual use, in order to avoid interference between the electrode and the workpiece, the electrode design requires a large electrode reduction. The machining allowance is removed layer by layer. From the starting position to the ending position, a lot of machining time is required. When machining deep cavities and large-area undercut structures, it seriously affects the production rhythm. Utility Model Content

[0004] This invention provides an EDM (Electrical Discharge Machining) device based on a contour-guided trajectory to solve the problem of difficulty in machining deep cavities and large-area undercut structures.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a spark machining device based on contour trajectory, comprising a device housing, a fixing rod connected to the lower end of the device housing, an electrode body fixed to the lower end of the fixing rod, a workpiece body to be machined movably connected below the fixing rod, a cavity to be machined being provided inside the workpiece body, a quick-release mechanism for quick disassembly of the device being provided inside the device housing, a positioning mechanism for positioning on one side of the fixing rod, and a fixing mechanism for fixing the spark machining device being provided on the upper surface of the device housing;

[0006] The quick-release mechanism includes a connector, a fixing component, a pull rod, a connecting plate, a tension spring, a limiting rod, and a limiting hole. The connector is connected to the inside of the device housing, and the side wall of the connector is connected to a fixing component that is fixed to the inner wall of the device housing.

[0007] As a further improvement of this utility model: a pull rod is telescopically connected to one side of the fixing member, and a connecting plate is fixed to the end of the pull rod.

[0008] As a further embodiment of this utility model: a tension spring is fixed to the side wall of the connecting plate and fixedly connected to the inner wall of the fixing member, and a limit rod is fixed to one side of the connecting plate.

[0009] As a further improvement of this utility model: the limiting rod penetrates the outer wall of the fixing member, and the end of the limiting rod is inserted into a limiting hole opened on the connecting member.

[0010] As a further embodiment of this utility model: the positioning mechanism includes a positioning seat, a positioning head, a limiting plate and a fixing sleeve, the positioning seat is connected to one side of the fixing rod, and the positioning head fixed on the fixing rod is inserted into the interior of the positioning seat.

[0011] As a further embodiment of this utility model: a limiting plate is fixed to the outer surface of the fixing rod, and a fixing sleeve that is threadedly connected to the connecting piece is sleeved on the outside of the limiting plate.

[0012] As a further embodiment of this utility model: the fixing mechanism includes a mounting rod, a clamping member and a fixing bolt, wherein the mounting rod is integrally fixed to the upper surface of the device housing.

[0013] As a further improvement of this utility model: a clamping member is inserted and connected to the upper end of the mounting rod, and a fixing bolt that is inserted and connected to the mounting rod is installed on one side of the clamping member.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model uses a mounting rod on the outer shell of the device to insert the mounting rod into the clamping member, tighten the fixing bolt, and then connect the device to the output shaft of the drive equipment. The machine tool drives the device to run, so that the electrode body at the end of the fixing rod is inserted into the workpiece body, thereby machining the machining cavity in the workpiece body. The machine tool can realize macro program trajectory, add tool compensation when the tool is infeeding, and remove tool compensation when the tool is retracting, realize the transition processing between roughing and finishing, and improve the machining efficiency.

[0016] 2. This utility model allows manual pulling of the pull rod on the fixing component to move the connecting plate, which in turn extends the tension spring. After the connecting component is fully connected to the device housing, the pull rod can be manually released. During the spring's self-reset process, the connecting plate will be reset, allowing the end of the limiting rod to be inserted into the limiting hole on the connecting component, thereby fixing the connecting component and facilitating subsequent disassembly and assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a schematic cross-sectional view of the outer casing of the device according to this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the device housing of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the outer shell of the device according to this utility model;

[0022] In the diagram: 1. Device housing; 2. Fixing rod; 3. Electrode body; 4. Workpiece body; 5. Cavity; 6. Connecting piece; 61. Fixing piece; 62. Pull rod; 63. Connecting plate; 64. Tension spring; 65. Limiting rod; 66. Limiting hole; 7. Positioning seat; 71. Positioning head; 72. Limiting plate; 73. Fixing sleeve; 8. Mounting rod; 81. Clamping piece; 82. Fixing bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a contour-based EDM (Electrical Discharge Machining) device includes a device housing 1, a fixing rod 2 connected to the lower end of the device housing 1, an electrode body 3 fixed to the lower end of the fixing rod 2, a workpiece body 4 to be processed movably connected below the fixing rod 2, a cavity 5 to be processed inside the workpiece body 4, a quick-release mechanism for quick release of the device inside the device housing 1, a positioning mechanism for positioning on one side of the fixing rod 2, and a fixing mechanism for fixing the EDM device on the upper surface of the device housing 1.

[0026] The quick-release mechanism includes a connector 6, a fixing member 61, a pull rod 62, a connecting plate 63, a tension spring 64, a limiting rod 65, and a limiting hole 66. The connector 6 is connected to the inside of the device housing 1, and the side wall of the connector 6 is connected to the fixing member 61, which is fixed to the inner wall of the device housing 1.

[0027] Furthermore, a pull rod 62 is telescopically connected to one side of the fixing member 61, and a connecting plate 63 is fixed to the end of the pull rod 62. A tension spring 64, which is fixedly connected to the inner wall of the fixing member 61, is fixed to the side wall of the connecting plate 63, and a limit rod 65 is fixed to one side of the connecting plate 63. Manually pulling the pull rod 62 on the fixing member 61 causes the pull rod 62 to drive the connecting plate 63 to move, and at the same time, it causes the tension spring 64 to extend.

[0028] Furthermore, the limiting rod 65 penetrates the outer wall of the fixing member 61, and the end of the limiting rod 65 is inserted into the limiting hole 66 opened on the connecting member 6. When the pull rod 62 is manually released, the connecting plate 63 will be driven to reset during the self-reset process of the tension spring 64, so that the end of the limiting rod 65 is inserted into the limiting hole 66 on the connecting member 6, thereby fixing the connecting member 6 and facilitating subsequent disassembly and assembly.

[0029] Example 2

[0030] Improvements based on Example 1:

[0031] Furthermore, the positioning mechanism includes a positioning seat 7, a positioning head 71, a limiting plate 72, and a fixing sleeve 73. The positioning seat 7 is connected to one side of the fixing rod 2, and the positioning head 71, which is fixed to the fixing rod 2, is inserted into the interior of the positioning seat 7. With the cooperation of the positioning seat 7 and the positioning head 71, the positioning function is achieved, thereby ensuring that the fixing rod 2 will not shift.

[0032] Furthermore, a limiting plate 72 is fixed to the outer surface of the fixing rod 2, and a fixing sleeve 73 that is threadedly connected to the connecting member 6 is sleeved on the outside of the limiting plate 72. By using the limiting plate 72 provided on the fixing rod 2, the fixing sleeve 73 can be tightened, so that the fixing sleeve 73 is threadedly connected to the connecting member 6, thereby pressing the limiting plate 72 and assisting in limiting the fixing rod 2.

[0033] Furthermore, the fixing mechanism includes a mounting rod 8, a clamping member 81, and a fixing bolt 82. The mounting rod 8 is integrally fixed to the upper surface of the device housing 1. The mounting rod 8 can be inserted into the clamping member 81 through the mounting rod 8 provided on the device housing 1.

[0034] Furthermore, a clamping member 81 is inserted and connected to the upper end of the mounting rod 8, and a fixing bolt 82, which is inserted and connected to the mounting rod 8, is installed on one side of the clamping member 81. The fixing bolt 82 is tightened using a tool, thereby connecting the device to the output shaft of the drive equipment, and the drive equipment drives the device to operate.

[0035] It should be noted that this device is driven by a machine tool, uses G-code instructions to achieve specific contour trajectory machining, and completes the transition from roughing to finishing during part machining through tool compensation. Users can edit corresponding templates and modify the relevant variables according to the actual machining process to complete the machining of undercut parts.

[0036] Working Principle: Before using the contour-based EDM machine, place the housing 1 in a suitable position. Align the connector 6 on the fixed rod 2 with the housing 1 and insert it. With the cooperation of the positioning seat 7 and the positioning head 71, positioning is achieved, ensuring the fixed rod 2 does not shift. The limiting plate 72 on the fixed rod 2 allows the fixing sleeve 73 to be tightened, creating a threaded connection between the fixing sleeve 73 and the connector 6, thus pressing the limiting plate 72 and assisting in limiting the fixed rod 2. Before connecting the fixed rod 2, manually pull the pull rod 62 on the fixing member 61, causing the pull rod 62 to move the connecting plate 63 and simultaneously extend the tension spring 64. After the connector 6 is fully connected to the housing 1, manually release the pull rod 62. During the self-reset process of the tension spring 64, the connecting plate 63 will reset, allowing the end of the limiting rod 65 to insert into the limiting hole 66 on the connector 6, thus fixing the connector 6 and facilitating subsequent assembly and disassembly. The mounting rod 8, provided on the outer casing 1, can be inserted into the clamping member 81. Then, the fixing bolt 82 is tightened using a tool, connecting the device to the output shaft of the drive equipment. The drive equipment then drives the device, causing the electrode body 3 at the end of the fixing rod 2 to insert into the workpiece body 4, thereby machining the cavity 5 within the workpiece body 4. Furthermore, the machine tool can follow a programmed path, perform tool feed with tool compensation, and remove tool compensation during retraction, achieving a transition between roughing and finishing processes and improving machining efficiency.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spark machining apparatus based on contour trajectory, comprising: The device housing (1) is characterized in that: a fixing rod (2) is connected to the lower end of the device housing (1), an electrode body (3) is fixed to the lower end of the fixing rod (2), a workpiece body (4) to be processed is movably connected to the lower part of the fixing rod (2), a cavity (5) to be processed is provided inside the workpiece body (4), a quick-release mechanism for quick disassembly of the device is provided inside the device housing (1), a positioning mechanism for positioning is provided on one side of the fixing rod (2), and a fixing mechanism for fixing the EDM machine processing device is provided on the upper surface of the device housing (1). The quick-release mechanism includes a connector (6), a fixing member (61), a pull rod (62), a connecting plate (63), a tension spring (64), a limiting rod (65), and a limiting hole (66). The connector (6) is connected to the inside of the device housing (1), and the side wall of the connector (6) is connected to a fixing member (61) that is fixed to the inner wall of the device housing (1).

2. The EDM machining device based on contour trajectory according to claim 1, characterized in that: A pull rod (62) is telescopically connected to one side of the fixing member (61), and a connecting plate (63) is fixed to the end of the pull rod (62).

3. The EDM machining device based on contour trajectory according to claim 2, characterized in that: The side wall of the connecting plate (63) is fixed with a tension spring (64) that is fixedly connected to the inner wall of the fixing member (61), and a limit rod (65) is fixed on one side of the connecting plate (63).

4. The EDM machining apparatus based on contour trajectory according to claim 3, characterized in that: The limiting rod (65) penetrates the outer wall of the fixing member (61), and the end of the limiting rod (65) is inserted into a limiting hole (66) opened on the connector (6).

5. The EDM machining apparatus based on contour trajectory according to claim 4, characterized in that: The positioning mechanism includes a positioning seat (7), a positioning head (71), a limiting plate (72), and a fixing sleeve (73). The positioning seat (7) is connected to one side of the fixing rod (2), and the positioning head (71) fixed on the fixing rod (2) is inserted into the interior of the positioning seat (7).

6. The EDM machining apparatus based on contour trajectory according to claim 5, characterized in that: A limiting plate (72) is fixed to the outer surface of the fixing rod (2), and a fixing sleeve (73) that is threadedly connected to the connector (6) is sleeved on the outside of the limiting plate (72).

7. The EDM machining apparatus based on contour trajectory according to claim 6, characterized in that: The fixing mechanism includes a mounting rod (8), a clamping member (81), and a fixing bolt (82). The mounting rod (8) is integrally fixed to the upper surface of the device housing (1).

8. The EDM apparatus based on contour trajectory according to claim 7, characterized in that: The upper end of the mounting rod (8) is connected to a clamping member (81), and a fixing bolt (82) that is connected to the mounting rod (8) is installed on one side of the clamping member (81).

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