Machine tool structure with combined machine head

Abstract

The invention discloses a machine tool structure with a combined machine head. The device comprises a first base and a second base, and the first base is provided with a working area used for containing a to-be-machined workpiece; a first X-axis linear module is arranged on the stand column; the first group of electric discharge machining machine heads comprises at least four machine heads, the four machine heads are installed on the first base and connected to the first X-axis linear module, and any one of the four machine heads is provided with an independent Y-axis linear module and an independent Z-axis linear module; the second group of electric discharge machining machine heads comprises at least one machine head, the at least one machine head is installed on the first base, a second X-axis linear module is arranged on the second base, the at least one machine head is connected to the second X-axis linear module, and the at least one machine head is provided with an independent Y-axis linear module and an independent Z-axis linear module; and the four machine heads are connected with an electric discharge machining power supply.

Description

Technical Field

[0001] The present application relates to the technical field of machine tool structures, and in particular to a machine tool structure for a combined machine head. Background Art

[0002] Electrical Discharge Machining (EDM) is an advanced machining method that uses an electric spark discharge process to precisely remove conductive materials. It is suitable for machining high-hardness materials and complex shapes. This technology is widely used in mold manufacturing, precision parts machining, and high-precision fields such as aerospace and automotive industries. In the EDM process, the machining head melts and evaporates the material through the electric sparks generated between the electrode and the workpiece, achieving precise removal of the workpiece surface. Since EDM has no restrictions on the hardness of the machining material, it can effectively process high-hardness materials that are difficult to process with traditional machining, such as hardened steel and cemented carbide. In addition, EDM can also achieve complex-shaped inner cavities and curved surface machining, which has unique process advantages.

[0003] In traditional EDM equipment, single-head or double-head designs are common choices. This structural form can usually meet the processing needs of smaller workpieces or simple-shaped molds, and is suitable for certain small and medium-sized batch processing tasks. However, with the development of industrial production, the demand for complex molds has increased dramatically, especially in the field of large-scale, diversified and high-precision mold manufacturing, which puts higher requirements on the processing range, processing efficiency and flexibility of EDM equipment. The processing of complex parts in modern industry often involves fine processing of multiple areas. If it only relies on traditional single-head or double-head equipment for multiple clamping processing, it will not only lead to a significant increase in processing time, but also increase the error accumulation during clamping and positioning, affecting the processing accuracy.

[0004] In the prior art, the emergence of multi-head EDM machines has partially solved this problem. Generally, multi-head EDM machines adopt a four-head layout structure, which can significantly improve processing efficiency in certain application scenarios. This layout can process multiple positions of the workpiece at the same time, reducing the number of clamping times and shortening the processing cycle of the workpiece. However, the four-head layout also has some limitations. First, due to the limitation on the number of heads, the processing coverage of the multi-head machine tool is relatively limited, and it is difficult to meet the comprehensive processing needs of larger workpieces. For example, when processing large and complex molds, the four heads cannot cover all the key areas of the mold at the same time, resulting in the need to frequently change the processing position during processing, which increases non-processing time. Secondly, the combination processing method of the four-head layout is relatively single, and it is difficult to flexibly adjust the processing strategy, and it is impossible to give full play to the processing potential of the multi-head structure. Summary of the invention

[0005] The present application provides a machine tool structure of a combined machine head, comprising:

[0006] A first base and a second base, wherein the first base is provided with a working area for placing a workpiece to be processed;

[0007] A column, on which a first X-axis linear module is disposed;

[0008] A first group of EDM heads, the first group of EDM heads comprising at least four heads, the four heads being mounted on the first base and respectively connected to the first X-axis linear module, any one of the four heads being provided with an independent Y-axis linear module and a Z-axis linear module, and the four heads being connected to an EDM power source;

[0009] A second group of EDM heads, the second group of EDM heads includes at least one head, the at least one head is mounted on the first base, a second X-axis linear module is provided on the second base, the at least one head is connected to the second X-axis linear module, the at least one head is provided with an independent Y-axis linear module and a Z-axis linear module, and the four heads are connected to an EDM power supply.

[0010] Optionally, the first base and the second base are arranged in parallel, and the first X-axis linear module and the second X-axis linear module are parallel.

[0011] Optionally, the working area is located between the first base and the second base.

[0012] Optionally, any head adopts the following structure, which includes:

[0013] Machine head body, electrode clamping mechanism and EDM power connector;

[0014] The machine head body is connected to the corresponding Z-axis linear module, the electrode clamping mechanism is arranged at the front end of the machine head body, and is used to fix the discharge electrode, the electrode clamping mechanism; the discharge machining power connector is used to connect the electrode clamping mechanism to the discharge machining power supply;

[0015] A plug clamping tool is provided on the working area, and the clamping tool is used to fix the workpiece to be processed on the working area.

[0016] Optionally, the second group of electrical discharge machining heads includes at least 2 heads.

[0017] Optionally, a sensor assembly is also provided on the second base, and the sensor assembly is used to detect the relative position between the machine heads.

[0018] Optionally, the electrical discharge machining power connector includes the following structure:

[0019] The mounting assembly is made of high temperature resistant insulating material, the outer surface of the mounting assembly is covered with a protective layer, the mounting assembly is provided with a mounting bracket, and the connector is fixed to the head body through the mounting bracket.

[0020] a multi-layer conductive contact structure, the multi-layer conductive contact structure connecting the EDM power source and the electrode clamping mechanism, the multi-layer conductive contact structure comprising a main contact and an auxiliary contact;

[0021] An elastic compensation device is arranged near the conductive contact.

[0022] Optionally, a base offset structure is further included, and the base offset structure is arranged between the first base and the second base, and the base offset structure includes:

[0023] An adjusting drive device and a locking device, wherein the adjusting drive device is used to drive the second base to shift its position, and the locking device is used to lock the position of the second base.

[0024] Optionally, the adjustment drive device is an electric servo drive device, which is connected to the sensor component through a feedback control system, and is used to monitor the movement state of the second base in real time and automatically adjust the working state of the locking device according to the real-time data.

[0025] Optionally, a gas cooling system is provided between the first group of EDM heads and the second group of EDM heads. The gas cooling system comprises a cooling pipe and a gas compression device for cooling the EDM heads during machining.

[0026] It can be seen from the above technical solutions that this application has the following advantages:

[0027] 1. The first and second EDM heads can process multiple workpieces or different parts of the same workpiece at the same time, realizing parallel operation of multiple heads, which greatly improves the processing efficiency. For batch production or multi-faceted workpieces, this structure can significantly reduce processing time and improve production capacity.

[0028] 2. The first group of EDM heads in the machine tool structure includes at least four heads, and the second group of EDM heads includes at least one head. This flexible configuration allows the use of multiple heads or a single head for processing according to the complexity of different processing tasks and the processing requirements of the workpiece, thereby improving the flexibility and adaptability of processing.

[0029] 3. Each machine head is equipped with independent Y-axis and Z-axis linear modules, so that each machine head can perform independent three-axis linkage control. This independent control not only helps to improve processing accuracy, but also can personalize the processing of different workpieces to meet complex processing needs.

[0030] 4. Due to the layout of the first base and the second base, and the combination of multiple heads, it is possible to achieve covering processing of large-sized molds. By adjusting the distance between the two bases or changing the layout of the heads, it can adapt to the processing needs of workpieces of different sizes, thereby expanding the application range of the machine tool.

[0031] 5. Each machine head is connected to the EDM power supply and has an independent electrode clamping mechanism, so that the machine head can perform precise EDM on different areas of the workpiece. This can achieve high-precision machining of difficult-to-machine parts such as complex curved surfaces and deep cavities, meeting the manufacturing requirements of complex parts.

[0032] 6. The first and second groups of heads are installed on two bases respectively, which is convenient for modular design and manufacturing. When a fault occurs, a head or a module can be replaced independently to reduce downtime. At the same time, this structure is also convenient for future upgrades or modifications, such as increasing the number of heads or replacing a higher-performance electrode clamping mechanism.

[0033] 7. By sharing the X-axis linear module, the first and second EDM heads can move on the same X-axis without having to configure an X-axis module for each head. This design not only reduces the number of X-axis linear modules required, reduces the manufacturing cost and maintenance cost of the equipment, but also simplifies the structure of the machine tool, making the whole machine more compact.

[0034] 8. The shared X-axis linear module makes the layout of the machine head more compact, thereby reducing the footprint of the machine tool. This is especially beneficial in factories where multiple machine tools need to be arranged in a limited space, helping to improve the layout flexibility and space utilization of the workshop.

[0035] 9. Since multiple machine heads share the same X-axis linear module, synchronous movement can be achieved to a certain extent, which helps to ensure the consistency of the processing position of different machine heads on the same workpiece, thereby improving the processing accuracy and workpiece surface quality.

[0036] 10. The shared X-axis module also makes it easier to coordinate between multiple heads. For example, when multiple heads are needed to process different areas of the same large-sized workpiece, the shared X-axis can make it easier to achieve coordination between the heads and plan the processing path. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic structural diagram of an embodiment of a machine tool structure of a combined machine head provided in the present application;

[0038] Figure 2 It is a structural schematic diagram of another embodiment of the machine tool structure of the combined machine head provided in the present application;

[0039] Figure 3 This is a schematic structural diagram of another embodiment of the machine tool structure of the combined machine head provided in this application;

[0040] Figure 4 This is a schematic diagram of the structure of an embodiment of the head in this application;

[0041] Figure 5 This is a schematic structural diagram of an embodiment of the electric discharge machining power connector 13 in the present application;

[0042] Figure 6 This is a schematic structural diagram of an embodiment of the base offset structure 19 in the present application;

[0043] Figure 7 It is a schematic diagram of the structure of the electric servo drive device 22 communicating with other components in the present application;

[0044] Figure 8 This is a schematic diagram of the structure of an embodiment of the gas cooling system in the present application. DETAILED DESCRIPTION

[0045] In order to solve the above technical problems, the present application provides a machine tool structure with a combined machine head.

[0046] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only used to illustrate the relative positional relationships between the various components or components, and do not particularly limit the specific installation orientations of the various components or components.

[0047] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0048] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In addition, the structures, proportions, sizes, etc. drawn in the drawings in the present application are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the restrictive conditions under which the present application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present application without affecting the effects and purposes that can be achieved by the present application.

[0050] The following will be combined with the drawings in this application to clearly and completely describe the technical solutions in this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] See also Figures 1 to 4 The present application first provides an embodiment of a machine tool structure of a combined machine head, the embodiment comprising:

[0052] A first base 01 and a second base 02, wherein the first base 01 is provided with a working area 03 for placing a workpiece to be processed;

[0053] A column 04, on which a first X-axis linear module 05 is disposed;

[0054] A first group of EDM heads 06, the first group of EDM heads 06 comprises at least four heads, the four heads are mounted on the first base 01, and are respectively connected to the first X-axis linear module 05, any one of the four heads is provided with an independent Y-axis linear module 07 and a Z-axis linear module 08, and the four heads are connected to an EDM power source;

[0055] The second group of EDM heads 09 includes at least one head, the at least one head is mounted on the first base 01, a second X-axis linear module 10 is provided on the second base 02, the at least one head is connected to the second X-axis linear module 10, the at least one head is provided with an independent Y-axis linear module 07 and a Z-axis linear module 08, and the four heads are connected to the EDM power supply.

[0056] The first base 01 and the second base 02: The two bases are provided with a working area 03 for placing the workpiece to be processed. It is possible to process multiple workpieces at the same time, or to perform multi-point collaborative processing on a large workpiece.

[0057] In an optional embodiment, the distance between the first base 01 and the second base 02 can be adjusted to meet the processing requirements of workpieces of different sizes and realize covering processing of large-sized molds.

[0058] Column 04: Column 04 is provided in the structure of the machine tool to support the motion module and the processing components. The first X-axis linear module 05 is integrated on the column 04 so that it can support the movement of the first set of EDM machine heads 06.

[0059] The first X-axis linear module 05: The first X-axis linear module 05 is mounted on the column 04 to provide precision movement along the X direction for the first set of EDM heads 06. This module can be driven by a high-precision ball screw or a linear motor to achieve stable linear movement.

[0060] Second X-axis linear module 10: The second X-axis linear module 10 is mounted on the second base 02 and is used to drive the second set of EDM heads 09 to move in the X direction. The two X-axis linear modules can be arranged in parallel.

[0061] The first set of EDM heads 06: The first set of EDM heads 06 includes at least four independent heads, which are all mounted on the first base 01 and are respectively connected to the first X-axis linear module 05. This layout allows each head to be independently adjusted in position along the X direction.

[0062] Each EDM head is equipped with independent Y-axis and Z-axis linear modules 08 to achieve three-axis linkage. The Y-axis is used for precise movement in the vertical direction, and the Z-axis is used for feed adjustment in the up and down directions. Each module can use a servo motor and a high-precision grating ruler feedback system to ensure high precision and high response speed of position control.

[0063] All four heads are connected to an EDM power source, which provides high-frequency electric sparks, enabling the electrode to accurately remove material from specific parts of the workpiece to be machined, thus achieving precision machining of the workpiece.

[0064] The second set of EDM heads 09: The second set of EDM heads 09 includes at least one head mounted on the second base 02. The second set is designed to be flexibly expandable, with more heads added when needed to meet production needs. Each head is also equipped with independent Y-axis and Z-axis linear modules 08 to achieve flexible three-axis control. The head can be precisely positioned in the X, Y and Z directions to accommodate various complex processing paths.

[0065] In this embodiment, the flexible combination of six EDM heads gives the system efficient processing capabilities. The configuration of the heads can be freely adjusted according to the size of the mold and processing requirements to achieve a variety of processing combinations, thereby significantly improving processing efficiency and flexibility.

[0066] The six heads can be divided into three groups, with two heads processing one mold at a time. This configuration is suitable for smaller molds or batch processing tasks. Through group parallel processing, three molds can be processed at the same time, greatly shortening the processing cycle.

[0067] The six heads can also be divided into two groups, with three heads processing one mold at the same time. This configuration is suitable for medium-sized mold processing tasks. The coordinated work of the three heads can improve the processing accuracy and efficiency.

[0068] In another optional embodiment, four heads on one side are used to process a larger mold at the same time, while two heads (or other numbers) on the other side are used to process a smaller mold. This combination is suitable for processing tasks with both large and small molds, and can flexibly allocate processing resources.

[0069] For large mold processing tasks, six heads can work together to share the processing tasks and improve processing speed and efficiency. Six heads can perform EDM on different areas at the same time, greatly shortening the processing time.

[0070] The flexible combination of six heads allows the processing system to freely adjust the heads according to the size and number of molds, improving processing efficiency and precision. Whether it is multi-task parallel processing or fast processing of large molds, the system can choose the best combination according to needs, significantly improving overall production efficiency and flexibility. This design is suitable for efficient and precise processing scenarios in modern production, can cope with diverse processing challenges, and maximize the potential of the equipment.

[0071] See also Figures 1 to 3 In an optional embodiment, the first base 01 and the second base 02 are arranged in parallel, and the first X-axis linear module 05 and the second X-axis linear module 10 are parallel.

[0072] In this optional embodiment, the first base 01 and the second base 02 are arranged side by side, and the first X-axis linear module 05 and the second X-axis linear module 10 are parallel.

[0073] The first base 01 and the second base 02 may be rectangular structures and made of steel material to ensure sufficient rigidity and stability.

[0074] The distance between the two bases can be adjusted to suit the processing requirements of workpieces of different sizes. The relative position of the bases can be precisely adjusted by slide rails, guide rails or electric adjustment devices to ensure stability during processing.

[0075] The first X-axis linear module 05 and the second X-axis linear module 10 are arranged in parallel, and adopt a high-precision ball screw and linear guide system to achieve efficient and accurate linear motion.

[0076] The drive system of each X-axis linear module can be independently controlled, including the servo motor and feedback system, to ensure that the machine head can move in a precise linear manner during processing.

[0077] This layout allows multiple workpieces to be processed independently or collaboratively at the same time. The first set of EDM heads 06 can operate on the first base 01, while the second set of EDM heads 09 can work on the second base 02, supporting different processing tasks.

[0078] See also Figures 1 to 3 In an optional embodiment, the working area 03 is located between the first base 01 and the second base 02 .

[0079] In this optional embodiment, the working area 03 is designed to be located at the center between the first base 01 and the second base 02, forming a closed processing area. This layout effectively utilizes the longitudinal space of the machine tool and makes the overall structure more compact. Since the working area 03 is located between the two bases, the first group and the second group of EDM heads 09 are allowed to perform processing in the same working area 03 at the same time. In this way, the synergy of multiple heads can be achieved and the processing efficiency can be improved, especially in batch production or large-size mold processing.

[0080] See also Figures 4 to 5 In an optional embodiment, any head adopts the following structure, which includes:

[0081] The machine head body 11, the electrode clamping mechanism 12 and the electrical discharge machining power connector 13;

[0082] The machine head body 11 is connected to the corresponding Z-axis linear module 08, and the electrode clamping mechanism 12 is arranged at the front end of the machine head body 11, and is used to fix the discharge electrode, the electrode clamping mechanism 12; the discharge machining power supply connector 13 is used to connect the electrode clamping mechanism 12 to the discharge machining power supply;

[0083] The working area 03 is provided with a plug clamping tool, and the clamping tool is used to fix the workpiece to be processed on the working area 03.

[0084] In this optional embodiment, the head body 11 is the core part of the entire head, and can be made of high-strength, wear-resistant materials (such as aluminum alloy or high-strength steel) to ensure that it can withstand high frequency, high temperature and impact during the discharge machining process. The head body 11 is connected to the corresponding Z-axis linear module 08 through a fixed component.

[0085] The electrode clamping mechanism 12 is located at the front end of the machine head body 11, and is mainly used to fix the discharge electrode to ensure that the position of the electrode is stable during the processing to avoid deviation or vibration. The clamping mechanism can adopt mechanical clamping or pneumatic clamping to quickly and reliably clamp or release the electrode. The electrode clamping mechanism 12 can be adjusted according to different workpieces and processing requirements to adapt to electrodes of different diameters and shapes.

[0086] The EDM power connector 13 is used to connect the electrode clamping mechanism 12 to the EDM power supply. A clamping fixture 14 is provided on the work area 03 to fix the workpiece to be processed.

[0087] See also Figure 1 In an optional embodiment, the second group of EDM heads 09 includes at least 2 heads.

[0088] In this embodiment, the second set of EDM heads 09 includes at least two heads, which are mounted on the second base 02 and connected to the second X-axis linear module 10. Each head is also equipped with independent Y-axis and Z-axis linear modules 08 to enhance processing flexibility.

[0089] See also Figure 1 In an optional embodiment, a sensor assembly 15 is further provided on the second base 02, and the sensor assembly 15 is used to detect the relative position between the machine heads.

[0090] In this optional embodiment, a sensor assembly 15 is provided on the second base 02 for detecting the relative position between the machine heads. The sensor in the sensor assembly 15 may use a laser displacement sensor, which can provide high-precision distance measurement and is suitable for detecting small position changes between the machine heads. A capacitive sensor may also be used, which can be used for non-contact detection of the position of the machine heads and is suitable for fast response and high-frequency measurement.

[0091] The sensor assembly 15 can be set at the edge of the second base 02, facing the relative position of the first base 01 and the machine head. Sensors are installed on the side of each machine head and the key position of the base to achieve comprehensive coverage. The sensor continuously emits a signal (such as a laser beam or a capacitive field) to measure the distance between the machine heads and transmit the data to the central control system. The collected position data will be processed by the data acquisition module to calculate the relative position and deviation between the machine heads. When a position deviation between the machine heads is detected, the central control system can automatically adjust the position of the machine head to restore to the set working spacing. The adjustment can be performed by a servo motor or a cylinder to ensure that the machine head is always in the best processing state.

[0092] See also Figure 5 In an optional embodiment, the electrical discharge machining power connector 13 includes the following structure:

[0093] The mounting assembly is made of a high temperature resistant insulating material, and the outer surface of the mounting assembly is covered with a protective layer. The mounting assembly is provided with a mounting bracket 16, and the connector is fixed to the head body 11 through the mounting bracket 16.

[0094] A multi-layer conductive contact structure, the multi-layer conductive contact structure connects the EDM power source and the electrode clamping mechanism 12, the multi-layer conductive contact structure includes a main contact 17 and an auxiliary contact 18;

[0095] An elastic compensation device is arranged near the conductive contact.

[0096] In this embodiment, the outside of the mounting assembly is made of high temperature resistant insulating material (such as polyimide or fluoroplastic) to ensure that it can still maintain excellent insulation performance and structural stability under high temperature conditions. The outer surface of the mounting assembly is covered with a protective layer (for example, silicone or other high temperature resistant materials), which can enhance its wear resistance and corrosion resistance, prevent arc and current leakage, and improve safety in use. The mounting assembly is designed with a mounting bracket 16 to provide a fixed connection. The connection between the bracket and the head body 11 can be a threaded connection or a clamping structure to ensure a firm connection and avoid loosening due to vibration during the processing. The main contact 17 can be made of a highly conductive material (such as a copper alloy) so that the current transmission efficiency between the discharge machining power supply is high and can withstand long-term workload without overheating. The auxiliary contact 18 can be a plurality of parallel contact structures, which can provide additional current paths when the main contact 17 fails or is maintained, thereby increasing the reliability of the system. The main contact 17 and the auxiliary contact 18 are both connected to the electrode clamping mechanism 12 through an electrical conductor to form an efficient circuit closure, so that the current can be stably transmitted to the electrode.

[0097] The elastic compensation device 27 (such as a spring or a rubber pad) is arranged near the conductive contact point to adapt to the small displacement caused by the movement of the machine head, thermal expansion or mechanical vibration and maintain a good contact pressure. The elastic compensation device can be a spring or a spring sheet structure.

[0098] See also Figure 1 and Figure 6 In an optional embodiment, it further includes a base offset structure 19, the base offset structure 19 is arranged between the first base 01 and the second base 02, and the base offset structure 19 includes:

[0099] An adjusting driving device 20 and a locking device 21 , wherein the adjusting driving device 20 is used to drive the second base 02 to shift its position, and the locking device 21 is used to lock the position of the second base 02 .

[0100] In this optional embodiment, the base offset structure 19 is arranged between the first base 01 and the second base 02, and is mainly used to adjust the relative position of the second base 02 to meet the processing requirements of workpieces of different sizes. The structure includes an adjustment drive device 20 and a locking device 21, which can realize efficient and accurate positioning and fixing functions. The adjustment drive device 20 is used to drive the second base 02 to offset the position to adjust the position of the machine head relative to the workpiece to be processed. The adjustment drive device 20 can adopt a linear push rod or a stepper motor driven by an electric motor to achieve displacement of the second base 02 by rotation and pushing. It can also be equipped with a microcontroller to control the action of the drive device through a program, and the user can input the desired position through the control interface to achieve automatic adjustment.

[0101] The locking device 21 is used to lock the second base 02 after it is adjusted to a suitable position to ensure that no positional deviation occurs during the processing. A mechanical locking device 21 (such as a locking bolt or a clamp) or a pneumatic locking device 21 can be used to fix the second base 02 in a preset position by applying pressure. The locking device 21 can be designed to be manually operated, or it can be linked with the adjustment drive device 20 to automatically lock the position. For example, a set of pneumatic clamps can be used. When the second base 02 moves to the set position, the pneumatic system automatically enables the clamp and locks it. Alternatively, a spring-loaded locking bolt can be designed, and the user only needs to press a button to lock the bolt into the corresponding hole to achieve quick locking.

[0102] In terms of spatial layout of the entire base offset structure 19 , the adjustment drive device 20 and the locking device 21 can be combined into a module, which is convenient for installation and maintenance.

[0103] The interval between the first base 01 and the second base 02 is occupied by the thickness of the base offset structure 19, and the modules of the base offset structure 19 can be fixed on the two bases by bolts to form a stable connection.

[0104] The control panel of the control system can be conveniently installed on the operation panel of the machine tool, making it easy for the operator to operate the machine.

[0105] The design of the base offset structure 19 provides the machine tool structure of the combined machine head with higher flexibility and stability, can effectively cope with the processing requirements of different workpieces, and improves the automation level of the machine tool. This design not only enhances the application range of the machine tool, but also improves the work efficiency and processing accuracy.

[0106] See also Figure 1 and Figure 7 In an optional embodiment, the adjustment drive device 20 is an electric servo drive device 22, and the electric servo drive device 22 is connected to the sensor assembly 15 through a feedback control system 23, and is used to monitor the movement state of the second base 02 in real time, and automatically adjust the working state of the locking device 21 according to the real-time data.

[0107] In this optional embodiment, the adjustment drive device 20 adopts the structural design of the electric servo drive device 22 to achieve precise adjustment and control of the position of the second base 02.

[0108] In this embodiment, the electric servo drive device 22 is composed of an electric servo motor, a drive controller and a transmission mechanism. The electric servo motor drives the movement of the second base 02 through a transmission mechanism (such as a ball screw or a gear transmission system). The drive controller can receive a signal from the feedback control system 23 and accurately control the speed and direction of the motor, thereby adjusting the position of the second base 02.

[0109] The sensor assembly 15 is installed at a key position of the second base 02 to monitor the movement status of the second base 02 in real time. Various types of sensors can be used, for example:

[0110] Displacement sensor: used to detect the precise displacement position of the second base 02.

[0111] Acceleration sensor: used to detect the acceleration change of the second base 02 and determine whether violent movement or vibration occurs.

[0112] Force sensor: used to monitor the external force applied to the base to adjust the position stability of the base.

[0113] These sensors send the monitored data to the feedback control system 23 through the sensor interface.

[0114] The feedback control system 23 connects the sensor assembly 15 and the electric servo drive device 22, and calculates the current position and motion state of the second base 02 by receiving real-time data (such as displacement, velocity, acceleration, etc.) from the sensor. The system automatically adjusts the action of the electric servo drive device 22 according to a preset control algorithm (such as a PID control algorithm) to maintain the precise positioning and stable movement of the second base 02.

[0115] In cooperation with the electric servo drive device 22, the locking device 21 is used to ensure that the second base 02 can be fixed at a certain position when needed. The locking device 21 can be in the form of electromagnetic locking, pneumatic locking or hydraulic locking.

[0116] When the feedback control system 23 detects that the second base 02 moves to the preset position, the system sends a signal to activate the locking device 21 to lock the second base 02 to prevent it from unexpected movement during the processing.

[0117] If the sensor detects external interference or the error deviates from the set range, the feedback control system 23 will release the locking device 21 in time, and restore the second base 02 to the target position by adjusting the driving device 20, and then re-lock it.

[0118] See also Figure 1 and Figure 8 In an optional embodiment, a gas cooling system 24 is provided between the first group of EDM heads 06 and the second group of EDM heads 09. The gas cooling system 24 includes a cooling pipe 25 and a gas compression device 26 for cooling the EDM heads during machining.

[0119] In this optional embodiment, the gas cooling system 24 is disposed between the first group of EDM heads 06 and the second group of EDM heads 09 to effectively control the high temperature generated during the machining process and improve the stability and machining accuracy of the EDM.

[0120] In this embodiment, the cooling pipe 25 is a pipe system for conveying cooling gas, and is arranged between the first group of EDM heads 06 and the second group of EDM heads 09. The cooling pipe 25 can be made of high temperature resistant and corrosion resistant materials, such as stainless steel or special polymer materials, to ensure its reliability in high temperature environments.

[0121] The gas compression device 26 is used to compress and deliver the cooling gas. The gas compression device 26 can be an air compressor or other types of gas compression equipment, which is used to provide stable high-pressure cooling gas. The cooling gas can be dry air, nitrogen or other inert gas to avoid the introduction of impurities or unnecessary chemical reactions during the processing.

[0122] During the EDM process, a large amount of heat is generated between the electrode and the workpiece surface, causing the temperature of the machine head and the surrounding environment to rise. If the heat is not dissipated in time, the processing accuracy and the life of the processing equipment may be affected. The gas cooling system 24 delivers high-pressure cooling gas to the surroundings of the EDM machine head through the cooling pipe 25.

[0123] The gas compressor 26 compresses the cooling gas to a certain pressure and delivers it to the surface of the EDM head and its surroundings through the cooling pipe 25. The gas nozzle can be arranged at the end of the cooling pipe 25 and facing the head and the processing area to directly cool the high temperature parts.

[0124] When the high-pressure cooling gas contacts the surface of the machine head, it takes away the heat generated by the processing and reduces the temperature of the machine head and the processing area. The cooled gas can be discharged outside the machine tool through the exhaust pipe to avoid the accumulation of hot air in the working area 03.

[0125] It should be noted that the above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A machine tool structure of a combined head, characterized in that: include: A first base and a second base, wherein the first base is provided with a working area for placing a workpiece to be processed; A column, on which a first X-axis linear module is disposed; A first group of EDM heads, the first group of EDM heads comprising at least four heads, the four heads being mounted on the first base and respectively connected to the first X-axis linear module, any one of the four heads being provided with an independent Y-axis linear module and a Z-axis linear module, and the four heads being connected to an EDM power source; A second group of EDM heads, the second group of EDM heads includes at least one head, the at least one head is mounted on the first base, a second X-axis linear module is provided on the second base, the at least one head is connected to the second X-axis linear module, the at least one head is provided with an independent Y-axis linear module and a Z-axis linear module, and the four heads are connected to an EDM power supply.

2. The machine tool structure of the combined machine head according to claim 1, characterized in that: The first base and the second base are arranged in parallel, and the first X-axis linear module and the second X-axis linear module are parallel.

3. The machine tool structure of the combined machine head according to claim 2, characterized in that: The working area is located between the first base and the second base.

4. The machine tool structure of the combined machine head according to claim 1, characterized in that: Any head adopts the following structure, which includes: Machine head body, electrode clamping mechanism and EDM power connector; The machine head body is connected to the corresponding Z-axis linear module, the electrode clamping mechanism is arranged at the front end of the machine head body, and is used to fix the discharge electrode, the electrode clamping mechanism; the discharge machining power connector is used to connect the electrode clamping mechanism to the discharge machining power supply; The working area is provided with a clamping tool, and the clamping tool is used to fix the workpiece to be processed on the working area.

5. The machine tool structure of the combined machine head according to claim 1, characterized in that: The second group of electrical discharge machining heads includes at least two heads.

6. The machine tool structure of the combined machine head according to claim 5, characterized in that: The second base is also provided with a sensor assembly, and the sensor assembly is used to detect the relative position between the machine heads.

7. The machine tool structure of the combined machine head according to claim 4, characterized in that: The electrical discharge machining power connector comprises the following structure: The mounting assembly is made of high temperature resistant insulating material, the outer surface of the mounting assembly is covered with a protective layer, the mounting assembly is provided with a mounting bracket, and the connector is fixed to the head body through the mounting bracket. a multi-layer conductive contact structure, the multi-layer conductive contact structure connecting the EDM power source and the electrode clamping mechanism, the multi-layer conductive contact structure comprising a main contact and an auxiliary contact; An elastic compensation device is arranged near the conductive contact.

8. The machine tool structure of the combined machine head according to claim 4, characterized in that: It also includes a base offset structure, which is arranged between the first base and the second base, and the base offset structure includes: An adjusting drive device and a locking device, wherein the adjusting drive device is used to drive the second base to shift its position, and the locking device is used to lock the position of the second base.

9. The machine tool structure of the combined machine head according to claim 8, characterized in that: The adjustment drive device is an electric servo drive device, which is connected to the sensor component through a feedback control system and is used to monitor the movement state of the second base in real time and automatically adjust the working state of the locking device according to the real-time data.

10. The machine tool structure of the combined machine head according to claim 1, characterized in that: A gas cooling system is arranged between the first group of EDM heads and the second group of EDM heads. The gas cooling system comprises a cooling pipeline and a gas compression device, and is used for cooling the EDM heads during machining.

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