A machine tool structure with a combined head

Abstract

This application discloses a machine tool structure with a combined machining head. The application includes: a first base and a second base, the first base having a working area for placing the workpiece to be processed; a column, on which a first X-axis linear module is mounted; a first group of electrical discharge machining (EDM) heads, comprising at least four heads mounted on the first base and respectively connected to the first X-axis linear module, each of the four heads having an independent Y-axis linear module and a Z-axis linear module; and a second group of EDM heads, comprising at least one head mounted on the first base, the second base having a second X-axis linear module, the at least one head connected to the second X-axis linear module, the at least one head having an independent Y-axis linear module and a Z-axis linear module, and all four heads connected to an EDM power supply.

Description

Technical Field

[0001] This application relates to the field of machine tool structure technology, and in particular to the design of a machine tool structure with a combined machine head. Background Technology

[0002] Electrical Discharge Machining (EDM) is an advanced machining method that precisely removes conductive materials through an electrical discharge process. It is suitable for machining high-hardness materials and complex shapes. This technology has wide applications in mold making, precision parts machining, and high-precision fields such as aerospace and automotive industries. In EDM, the machining head melts and evaporates the material through the electric spark generated between the electrode and the workpiece, achieving precise removal from the workpiece surface. Because EDM has no limitation on the hardness of the material being machined, it can effectively machine high-hardness materials that are difficult to handle with traditional machining methods, such as hardened steel and cemented carbide. Furthermore, EDM can also machine complex internal cavities and curved surfaces, offering unique technological advantages.

[0003] In traditional EDM equipment, single-head or double-head designs are common choices. This structure can usually meet the processing needs of smaller workpieces or simple-shaped molds, and is suitable for some small to medium 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 places higher demands on the processing range, processing efficiency, and flexibility of EDM equipment. Modern industry often involves the fine machining of multiple areas for the processing of complex parts. If only traditional single-head or double-head equipment is used for multiple clamping and processing, it will not only lead to a significant increase in processing time, but also increase the accumulation of errors in the clamping and positioning process, affecting the processing accuracy.

[0004] In existing technologies, the emergence of multi-head electrical discharge machining (EDM) tools has partially solved this problem. Typically, multi-head EDM tools employ a four-head layout, which can significantly improve machining efficiency in certain applications. This layout allows for simultaneous machining of multiple positions on the workpiece, reducing the number of clamping operations and shortening the machining cycle. However, the four-head layout also has some limitations. First, due to the limited number of heads, the machining coverage of multi-head machine tools is relatively limited, making it difficult to meet the comprehensive machining needs of larger workpieces. For example, when machining large and complex molds, the four heads cannot simultaneously cover all critical areas of the mold, leading to frequent changes in machining positions and increasing non-machining time. Second, the combined machining methods of the four-head layout are relatively simple, making it difficult to flexibly adjust machining strategies and fully utilize the machining potential of the multi-head structure. Summary of the Invention

[0005] This application provides a machine tool structure with a combined head, including:

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

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

[0008] The first group of electrical discharge machining heads includes at least four heads, which are mounted on the first base and connected to the first X-axis linear module respectively. Each of the four heads is equipped with an independent Y-axis linear module and a Z-axis linear module. The four heads are connected to the electrical discharge machining power supply.

[0009] The second set of electrical discharge machining heads includes at least one head, which is mounted on the first base. The second base is provided with a second X-axis linear module, and 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. The four heads are connected to the electrical discharge machining power supply.

[0010] Optionally, the first base and the second base are arranged side by side, 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 machine head may adopt the following structure, the structure comprising:

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

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

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

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

[0017] Optionally, the second base is further provided with a sensor assembly for detecting 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, and its outer surface is covered with a protective layer. The mounting assembly is equipped with a mounting bracket, through which the connector is fixed to the machine head body.

[0020] A multi-layer conductive contact structure is provided, wherein the multi-layer conductive contact structure connects the discharge processing power supply to the electrode clamping mechanism, and the multi-layer conductive contact structure includes main contacts and auxiliary contacts;

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

[0022] Optionally, a base offset structure is also included, wherein the base offset structure is disposed between the first base and the second base, and the base offset structure includes:

[0023] The adjustment drive device and the locking device are 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 assembly through a feedback control system to monitor the movement status of the second base in real time and automatically adjust the working status of the locking device based on the real-time data.

[0025] Optionally, a gas cooling system is provided between the first set of EDM heads and the second set of EDM heads. The gas cooling system includes cooling pipes and a gas compression device for cooling the EDM heads during the processing.

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

[0027] 1. The first and second sets of electrical discharge machining (EDM) heads can simultaneously process multiple workpieces or different parts of the same workpiece, enabling parallel operation of multiple heads and greatly improving processing efficiency. For batch production or multi-faceted machining of workpieces, this structure can significantly reduce processing time and increase production capacity.

[0028] 2. The first group of electrical discharge machining heads in the machine tool structure contains at least four heads, and the second group of electrical discharge machining heads contains at least one head. This flexible configuration allows for the selection of multiple heads or a single head for machining, depending on the complexity of different machining tasks and the machining requirements of the workpiece, thereby improving the flexibility and adaptability of machining.

[0029] 3. Each machining head is equipped with independent Y-axis and Z-axis linear modules, enabling independent three-axis linkage control for each head. This independent control not only helps improve machining accuracy but also allows for personalized settings for machining different workpieces, meeting complex machining needs.

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

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

[0032] 6. The first and second sets of electrode heads are mounted on two separate bases, facilitating modular design and manufacturing. In case of malfunction, a single electrode head or module can be replaced independently, minimizing downtime. This structure also facilitates future upgrades or modifications, such as increasing the number of electrode heads or replacing them with higher-performance electrode clamping mechanisms.

[0033] 7. By sharing an X-axis linear module, the first and second sets of EDM heads can move along the same X-axis without requiring a separate X-axis module for each head. This design not only reduces the number of required X-axis linear modules, lowering manufacturing and maintenance costs, but also simplifies the machine tool's structure, making the entire machine more compact.

[0034] 8. Sharing a linear X-axis module allows for a more compact machine head layout, thereby reducing the machine tool's footprint. This is particularly advantageous in factories where multiple machine tools need to be arranged in limited spaces, helping to improve workshop layout flexibility and space utilization.

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

[0036] 10. Sharing an X-axis module also makes coordination between multiple machine heads more convenient. For example, when multiple machine heads need to process different areas of the same large workpiece, sharing an X-axis makes it easier to achieve collaboration between the machine heads and plan the processing path. Attached Figure Description

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

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

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

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

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

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

[0043] Figure 7 This is a schematic diagram showing the communication connection between the electric servo drive device 22 and other components in this application;

[0044] Figure 8 This is a schematic diagram of an embodiment of the gas cooling system in this application. Detailed Implementation

[0045] To address the aforementioned technical problems, this application provides a machine tool structure with a combined headstock.

[0046] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0047] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0050] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] See Figures 1 to 4 This application first provides an embodiment of a machine tool structure with a combined machine head, the embodiment including:

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

[0053] Column 04, on which a first X-axis linear module 05 is provided;

[0054] The first set of electrical discharge machining heads 06 includes 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. Each of the four heads is provided with an independent Y-axis linear module 07 and Z-axis linear module 08. The four heads are connected to the electrical discharge machining power supply.

[0055] The second set of electrical discharge machining heads 09 includes at least one head, which is mounted on the first base 01. A second X-axis linear module 10 is provided on the second base 02, and 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. The four heads are connected to the electrical discharge machining power supply.

[0056] First base 01 and second base 02: Both bases are equipped with working areas 03 for placing workpieces to be processed. This allows for the simultaneous processing of multiple workpieces or multi-point collaborative processing of a large workpiece.

[0057] In an optional embodiment, the distance between the first base 01 and the second base 02 can be adjusted to accommodate the processing requirements of workpieces of different sizes, thereby achieving full-coverage processing of large-size molds.

[0058] Column 04: A column 04 is provided in the structure of the machine tool to support the motion module and machining components. The first X-axis linear module 05 is integrated on the column 04, which can support the movement of the first set of electrical discharge machining heads 06.

[0059] First X-axis linear module 05: The first X-axis linear module 05 is mounted on the column 04 and provides precise 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 movement of the second set of electrical discharge machining heads 09 in the X direction. The two X-axis linear modules can be arranged in parallel.

[0061] The first set of electrical discharge machining heads 06 comprises at least four independent heads, each mounted on the first base 01 and connected to the first X-axis linear module 05. This layout allows each head to be independently positioned along the X-axis.

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

[0063] All four machining heads are connected to an electrical discharge machining (EDM) power supply. The EDM power supply provides high-frequency electrical sparks, enabling the electrodes to precisely remove material from specific areas of the workpiece, thus achieving precision machining.

[0064] The second set of EDM heads 09 includes at least one head mounted on the second base 02. The design of the second set is flexible and expandable, allowing for the addition of more heads as needed to meet production requirements. Each head is also equipped with independent Y-axis and Z-axis linear modules 08, enabling flexible three-axis control. The heads can be precisely positioned in the X, Y, and Z directions to accommodate various complex machining paths.

[0065] In this embodiment, the flexible combination of six electrical discharge machining heads gives the system high-efficiency processing capabilities. The configuration of the machining 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 cutting heads can be divided into three groups, with two cutting heads processing one mold simultaneously. This configuration is suitable for smaller molds or batch processing tasks. By processing in parallel groups, three molds can be processed at the same time, significantly shortening the processing cycle.

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

[0068] In another alternative embodiment, four cutting heads on one side are used to process a larger mold simultaneously, while two cutting heads (or other numbers) on the other side are used to process smaller molds. This combination is suitable for processing tasks involving both large and small molds, allowing for flexible allocation of processing resources.

[0069] For machining large molds, six machining heads can work simultaneously to share the machining workload, improving machining speed and efficiency. The six machining heads can simultaneously perform electrical discharge machining on different areas, thus significantly reducing machining time.

[0070] The flexible combination of six machining heads allows the machining system to freely adjust the heads according to the size and quantity of the mold, improving processing efficiency and precision. Whether it's multi-task parallel processing or rapid processing of large molds, the system can select the optimal combination according to requirements, significantly improving overall production efficiency and flexibility. This design is suitable for high-efficiency precision machining scenarios in modern production, capable of handling diverse machining challenges and maximizing the potential of the equipment.

[0071] See Figures 1 to 3 In an 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.

[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 can be rectangular structures made of steel to ensure sufficient rigidity and stability.

[0074] The distance between the two bases is adjustable to accommodate the processing needs of workpieces of different sizes. The relative position of the bases can be precisely adjusted via slide rails, guide rails, or an electric adjustment device 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 a high-precision ball screw and linear guide system is used to achieve efficient and accurate linear motion.

[0076] Each X-axis linear module's drive system can be independently controlled, including servo motors and feedback systems, ensuring that the machine head can make precise linear movements during processing.

[0077] This layout allows for the independent or collaborative processing of multiple workpieces simultaneously. The first set of EDM heads 06 can operate on the first base 01, while the second set of EDM heads 09 can operate on the second base 02, supporting different processing tasks.

[0078] See 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, making the overall structure more compact. Since the working area 03 is located between the two bases, it allows the first and second sets of EDM heads 09 to perform processing simultaneously within the same working area 03. This enables multi-head synergy, improving processing efficiency, especially in batch production or large-size mold processing.

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

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

[0082] The head body 11 is connected to the corresponding Z-axis linear module 08. The electrode clamping mechanism 12 is located at the front end of the head body 11 and is used to fix the discharge electrode. The discharge machining power 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 flower plug clamping fixture, which 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 electrical discharge machining process. The head body 11 is connected to the corresponding Z-axis linear module 08 through a fixing assembly.

[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, ensuring the stability of the electrode position during processing and avoiding displacement or vibration. The clamping mechanism can adopt mechanical clamping or pneumatic clamping, which can quickly and reliably clamp or release the electrode. The electrode clamping mechanism 12 can be adjusted according to different workpieces and processing requirements to accommodate electrodes of different diameters and shapes.

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

[0087] See Figure 1 In an optional embodiment, the second set of electrical discharge machining heads 09 includes at least two heads.

[0088] In this embodiment, the second set of electrical discharge machining heads 09 includes at least two heads, 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 machining flexibility.

[0089] See Figure 1 In an optional embodiment, the second base 02 is further provided with a sensor assembly 15, which 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 can be a laser displacement sensor, which provides high-precision distance measurement and is suitable for detecting minute positional changes between the machine heads. Alternatively, a capacitive sensor can be used, which can be used for non-contact detection of the machine head position and is suitable for fast response and high-frequency measurement.

[0091] Sensor assembly 15 can be positioned 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 sides of each machine head and at key locations on the base to achieve full coverage. The sensors continuously emit signals (such as laser beams or capacitive fields) to measure the distance between the machine heads and transmit the data to the central control system. The collected position data is processed by the data acquisition module to calculate the relative position and deviation between the machine heads. When a positional deviation between the machine heads is detected, the central control system can automatically adjust the position of the machine heads to restore them to the set working spacing. The adjustment can be performed by a servo motor or cylinder to ensure that the machine head is always in the optimal processing state.

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

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

[0094] A multi-layer conductive contact structure is provided, wherein the multi-layer conductive contact structure connects the discharge processing power supply to the electrode clamping mechanism 12, and the multi-layer conductive contact structure includes a main contact 17 and an auxiliary contact 18.

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

[0096] In this embodiment, the exterior of the mounting assembly is made of a high-temperature resistant insulating material (such as polyimide or fluoroplastic) to ensure excellent insulation performance and structural stability under high-temperature conditions. The outer surface of the mounting assembly is covered with a protective layer (e.g., silicone or other high-temperature resistant materials) to enhance its wear and corrosion resistance, prevent arcing and current leakage, and improve safety. The mounting assembly is designed with a mounting bracket 16 for a fixed connection. The connection between the bracket and the machine head body 11 can be a threaded connection or a clamping structure to ensure a secure connection and prevent loosening due to vibration during processing. The main contact 17 can be made of a highly conductive material (such as copper alloy) to ensure high current transmission efficiency with the EDM power supply and withstand long-term workloads without overheating. The auxiliary contact 18 can be a parallel contact structure, providing an additional current path in case of failure or maintenance of the main contact 17, increasing system reliability. Both the main contact 17 and the auxiliary contact 18 are connected to the electrode clamping mechanism 12 via electrical conductors, forming an efficient closed circuit, allowing current to be stably transmitted to the electrodes.

[0097] An elastic compensation device 27 (such as a spring or rubber pad) is placed near the conductive contact to accommodate minor displacements caused by machine head movement, thermal expansion, or mechanical vibration, maintaining good contact pressure. The elastic compensation device can be a spring or a spring sheet structure.

[0098] See Figure 1 and Figure 6 In an optional embodiment, a base offset structure 19 is further included, which is disposed between the first base 01 and the second base 02. The base offset structure 19 includes:

[0099] Adjustment drive device 20 and locking device 21, wherein the adjustment drive 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 disposed between the first base 01 and the second base 02, mainly used to adjust the relative position of the second base 02 to adapt to the processing requirements of workpieces of different sizes. This structure includes an adjustment drive device 20 and a locking device 21, enabling efficient and precise positioning and fixing functions. The adjustment drive device 20 is used to drive the second base 02 to offset its position, thereby adjusting the position of the machine head relative to the workpiece to be processed. The adjustment drive device 20 can be a linear push rod driven by an electric motor or a stepper motor, which moves the second base 02 by rotation and pushing. A microcontroller can also be provided to control the action of the drive device through a program, allowing the user to input the desired position via a control interface for automatic adjustment.

[0101] The locking device 21 is used to lock the second base 02 after it has been adjusted to the appropriate position to ensure that no positional deviation occurs during processing. The locking device 21 can be a mechanical locking device (such as a locking bolt or clamp) or a pneumatic locking device 21, which applies pressure to fix the second base 02 in a preset position. The locking device 21 can be designed for manual operation or 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 activates the clamps to lock it. Alternatively, a spring-loaded locking bolt can be designed, allowing the user to quickly lock the bolt into the corresponding hole simply by pressing a button.

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

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

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

[0105] The base offset structure 19 provides greater flexibility and stability to the machine tool structure of the combined machine head, effectively meeting the processing requirements of different workpieces while improving the automation level of the machine tool. This design not only expands the application range of the machine tool but also improves work efficiency and processing accuracy.

[0106] See Figure 1 and Figure 7 In an optional embodiment, the adjustment drive device 20 is an electric servo drive device 22. The electric servo drive device 22 is connected to the sensor assembly 15 through the feedback control system 23 to monitor the movement status of the second base 02 in real time and automatically adjust the working status 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 consists 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 gear transmission system). The drive controller can receive signals from the feedback control system 23 and precisely control the speed and direction of the motor, thereby realizing the adjustment of the position of the second base 02.

[0109] The sensor assembly 15 is installed at key locations on the second base 02 for real-time monitoring of the movement status of the second base 02. Various types of sensors can be used, such as:

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

[0111] Accelerometer: Used to detect changes in acceleration of the second base 02 to determine whether violent movement or vibration has occurred.

[0112] Force sensor: Used to monitor the external force on the base in order to adjust the positional stability of the base.

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

[0114] The feedback control system 23 connects the sensor assembly 15 and the electric servo drive device 22. By receiving real-time data (such as displacement, velocity, acceleration, etc.) from the sensors, it calculates the current position and motion state of the second base 02. 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] With the cooperation of the electric servo drive 22, the locking device 21 is used to ensure that the second base 02 can be fixed in 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 has moved to a preset position, the system will send a signal to activate the locking device 21, so as to lock the second base 02 to prevent it from moving unexpectedly during the processing.

[0117] If the sensor detects external interference or errors deviating from the set range, the feedback control system 23 will promptly release the locking device 21 and restore the second base 02 to the target position by adjusting the drive device 20, and then relock it.

[0118] See Figure 1 and Figure 8 In an optional embodiment, a gas cooling system 24 is provided between the first set of electrical discharge machining heads 06 and the second set of electrical discharge machining heads 09. The gas cooling system 24 includes a cooling pipe 25 and a gas compression device 26, which is used to cool the electrical discharge machining heads during the machining process.

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

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

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

[0122] During electrical discharge machining (EDM), a large amount of heat is generated between the electrode and the workpiece surface, causing the temperature of the EDM head and its surrounding environment to rise. If heat is not dissipated in time, it may affect the machining accuracy and the lifespan of the machining equipment. The gas cooling system 24 delivers high-pressure cooling gas to the vicinity of the EDM head through cooling pipes 25.

[0123] The gas compression device 26 compresses the cooling gas to a certain pressure and delivers it to the surface and surrounding area of ​​the EDM head through the cooling pipe 25. The gas nozzle can be located at the end of the cooling pipe 25 and face the head and the processing area to directly cool the high-temperature parts.

[0124] When the high-pressure cooling gas comes into contact with the surface of the machine head, it carries away the heat generated during machining, reducing the temperature of the machine head and machining area. The cooled gas can be discharged outside the machine tool through the exhaust pipe to prevent the accumulation of hot gas in the working area 03.

[0125] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A machine tool structure with a combined machine head, characterized in that, include: A first base and a second base, wherein the first base is provided with a working area for placing the workpiece to be processed; A column, on which a first X-axis linear module is provided; The first group of electrical discharge machining heads includes at least four heads, which are mounted on the first base and connected to the first X-axis linear module respectively. Each of the four heads is equipped with an independent Y-axis linear module and a Z-axis linear module. The four heads are connected to the electrical discharge machining power supply. The second set of electrical discharge machining heads includes at least one head, which is mounted on the second base. The second base is provided with a second X-axis linear module, and 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. The four heads are connected to the electrical discharge machining power supply. It also includes a base offset structure, which is disposed between the first base and the second base, and the base offset structure includes: The adjustment drive device and the locking device are used to drive the second base to shift its position. The adjustment drive device is an electric servo drive device. The electric servo drive device is connected to the sensor assembly through a feedback control system to monitor the movement status of the second base in real time and automatically adjust the working status of the locking device according to the real-time data.

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 side by side, 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 of the machine heads adopts the following structure, the structure including: Machine head body, electrode clamping mechanism and EDM power connector; The head body is connected to the corresponding Z-axis linear module. The electrode clamping mechanism is located at the front end of the head body and is used to fix the discharge electrode. 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 fixture, which is used to fix the workpiece to be processed in the working area.

5. The machine tool structure of the combined machine head according to claim 1, characterized in that, The second set 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 equipped with a sensor assembly, which 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 includes the following structure: The mounting assembly is made of high-temperature resistant insulating material, and its outer surface is covered with a protective layer. The mounting assembly is equipped with a mounting bracket, through which the connector is fixed to the machine head body. A multi-layer conductive contact structure is provided, wherein the multi-layer conductive contact structure connects the discharge processing power supply to the electrode clamping mechanism, and the multi-layer conductive contact structure includes main contacts and auxiliary contacts; An elastic compensation device is disposed near the conductive contact.

8. The machine tool structure of the combined machine head according to claim 1, characterized in that, A gas cooling system is provided between the first set of EDM heads and the second set of EDM heads. The gas cooling system includes cooling pipes and a gas compression device, which is used to cool the EDM heads during the processing.

Images