A method for controlling the distance between a machine tool and its head.

Abstract

This invention provides a method for controlling the distance between a machine tool and its machine heads. The machine tool includes a base, a column, a tool magazine, and a crossbeam. The crossbeam is mounted on the column, and a guide rail assembly is installed on the crossbeam. Multiple movable machine heads and corresponding drive components are mounted on the guide rail assembly. A detection device for detecting the distance between adjacent machine heads is installed between them, and the detection device is connected to a control system. When the distance between two adjacent machine heads is detected to be less than a preset safe distance, the control system issues an alarm signal and controls the drive components to prevent the corresponding two machine heads from continuing to approach each other. This application, by monitoring the distance between adjacent machine heads in real time, can issue an alarm in time before a collision occurs and prevent the corresponding two machine heads from continuing to approach each other, effectively avoiding accidental collisions between machine heads and greatly reducing the risk of machine tool damage and operator injury.

Description

Technical Field

[0001] This invention relates to the field of machine tools, and more specifically, to a machine tool and a method for controlling the distance between its machine head. Background Technology

[0002] In modern manufacturing, machine tools are widely used in the processing of various materials due to their high efficiency and flexible production capabilities. These machine tools are typically equipped with multiple machine heads, each of which can work independently or collaboratively. In traditional machine tool designs, each machine head is usually moved and positioned manually or through preset programs, lacking real-time position monitoring and collision avoidance mechanisms. This can lead to accidental collisions between adjacent machine heads during processing, causing damage to the machine tool and potentially resulting in safety accidents that threaten operators.

[0003] In view of the above problems, it is necessary to design a new type of machine tool that can detect the distance between adjacent machine heads in real time and issue an alarm when the distance is less than a preset safety value, thereby effectively avoiding collisions between machine heads and improving the safety and stability of the machine tool. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a method for controlling the distance between machine tools and their heads, thereby resolving the issue of potential collisions caused by the lack of real-time position monitoring between machine heads in machine tools.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The present invention provides a machine tool comprising a base, a worktable, a tool magazine, a column, and a crossbeam. The worktable and tool magazine are mounted on the base. The column includes a first column and a second column, which are located on opposite sides of the base. The crossbeam is mounted across the first and second columns, and a guide rail assembly is provided along the length of the crossbeam. The invention is characterized by further comprising:

[0007] Multiple machine heads are movably mounted on the guide rail assembly;

[0008] Multiple drive components are mounted on the crossbeam and paired with multiple machine heads to drive the corresponding machine head to move individually on the guide rail assembly;

[0009] The detection device is installed between two adjacent machine heads to detect the real-time distance between the two adjacent machine heads.

[0010] The control system, connected to the detection device and multiple drive components, issues an alarm signal and controls the drive components to prevent the corresponding two machine heads from getting closer when it detects that the distance between two adjacent machine heads is less than a preset safe distance.

[0011] Furthermore, the control system includes:

[0012] The acquisition module, connected to the detection device, is used to acquire the real-time distance between two adjacent machine heads;

[0013] The comparison module, connected to the acquisition module, is used to compare the acquired real-time distance with the preset safe distance;

[0014] An alarm module, connected to a comparison module, is used to issue an alarm signal when the real-time distance is less than the safe distance.

[0015] The control module, connected to the comparison module, is used to control the drive components to drive the two corresponding machine heads to move in opposite directions or to lock them.

[0016] Furthermore, the detection device includes a sensor and a sensing engagement part. In two adjacent machine heads, one machine head is equipped with a sensor and the other machine head is equipped with a sensing engagement part. The sensor and the sensing engagement part are located on opposite sides of the adjacent machine heads. The sensor and the sensing engagement part cooperate to detect the real-time distance between the two adjacent machine heads.

[0017] The control system also includes:

[0018] The motion detection module is connected to the control module and the alarm module. The motion detection module is used to detect the motion status of each drive component based on the alarm signal and generate a feedback signal based on the motion of the drive component. The feedback signal contains the motion signal of the drive component that is currently in motion.

[0019] The control module is also used to acquire the motion status of each drive component in real time, and based on the motion signals of the drive components, the control module is used to control the corresponding drive components to drive the currently moving machine head to move in the opposite direction.

[0020] Furthermore, four machine heads are provided, namely, the first machine head, the second machine head, the third machine head, and the fourth machine head;

[0021] The second machine head has a sensor on each side, and the third machine head has a sensor mating part on each side; the first machine head has a sensor mating part on the side closest to the second machine head, and the fourth machine head has a sensor on the side closest to the third machine head; or,

[0022] A sensor is provided on the side of the second machine head closest to the first machine head, and a sensor mating part is provided on the side of the third machine head close to the fourth machine head. A sensor mating part is provided on the side of the first machine head close to the second machine head, and a sensor is provided on the side of the fourth machine head close to the third machine head. The second machine head and the third machine head are at the closest position to each other, and a preset distance is provided between them.

[0023] Furthermore, the crossbeam is a single unit, and a set of guide rails is installed on the crossbeam, with all machine heads mounted on the same set of guide rails.

[0024] Furthermore, the guide rail assembly includes a first guide rail and a second guide rail, each of which is equipped with two machine heads.

[0025] Furthermore, the column also includes a third column located between the first column and the second column, and the beam includes a first sub-beam and a second sub-beam, with the first sub-beam spanning across the first column and the third column, and the second sub-beam spanning across the second column and the third column;

[0026] The first guide rail is set on the first sub-beam, and the second guide rail is set on the second sub-beam.

[0027] A second aspect of this invention provides a method for controlling the head spacing of a machine tool, using any of the above-described machine tools. The control method includes the following steps:

[0028] Real-time distance between adjacent machine heads is obtained.

[0029] The acquired real-time distance is compared with the preset safe distance;

[0030] An alarm signal is issued when the real-time distance is less than the safe distance;

[0031] Based on the alarm signal, control the triggering head to move in the opposite direction or lock.

[0032] Furthermore, based on the alarm signal, the machine head that triggered the alarm is controlled to move in the opposite direction;

[0033] Based on the alarm signal, controlling the triggering machine head to move in the opposite direction specifically includes:

[0034] Based on alarm signals, the motion status of each drive component is detected in real time;

[0035] Based on the motion state of the driving component, a feedback signal is generated, which contains the motion signal of the driving component that is currently in motion;

[0036] Based on the feedback signal, the control module controls the corresponding drive component to move the currently moving head in the opposite direction.

[0037] The beneficial effects of this invention are as follows: A detection device is installed between adjacent machine heads to monitor the distance between them in real time. When the distance between two adjacent machine heads is detected to be less than a preset safe distance, the control system issues an alarm signal and controls the drive components to prevent the corresponding two machine heads from continuing to approach each other. By monitoring the distance between adjacent machine heads in real time, this application enables the machine tool to issue an alarm in time before a collision occurs and prevent the corresponding two machine heads from continuing to approach each other, effectively avoiding accidental collisions between machine heads and greatly reducing the risk of machine tool damage and operator injury. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0039] Figure 1 This is a structural diagram of the machine tool of the present invention;

[0040] Figure 2 This is a schematic diagram of the guide rail of the machine tool of the present invention;

[0041] Figure 3 This is a schematic diagram of the sensor principle of the present invention;

[0042] Figure 4 This is a schematic diagram of the control system for the head-to-head spacing of the present invention;

[0043] Figure 5 This is a flowchart of the method for controlling the head spacing of the present invention;

[0044] Figure 6 This is a feedback flowchart of the head-to-head spacing control method of the present invention.

[0045] The attached figures are labeled as follows:

[0046] 1-Base;

[0047] 2-Workbench;

[0048] 3-Tool magazine;

[0049] 4-Column, 41-First column, 42-Second column, 43-Third column;

[0050] 5-Crossbeam, 51-First sub-crossbeam, 52-Second sub-crossbeam;

[0051] 6-Guide rail group, 61-First guide rail, 611-First sub-guide rail, 612-Second sub-guide rail, 613-Third sub-guide rail, 62-Second guide rail, 63-First slider group, 64-Second slider group;

[0052] 7-Head unit, 71-First head unit, 72-Second head unit, 73-Third head unit, 74-Fourth head unit;

[0053] 8-Detection device, 81-Sensor, 82-Sensing mating part;

[0054] 9-Drive component, 91-First drive component, 92-Second drive component, 93-Third drive component, 94-Fourth drive component;

[0055] 100 - Acquisition module, 200 - Comparison module, 300 - Alarm module, 400 - Control module, 500 - Motion detection module. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0057] refer to Figure 1 , Figure 2 and Figure 4 The first aspect of this invention provides a machine tool, including a base 1, a worktable 2, a tool magazine 3, a column 4, and a crossbeam 5. The base 1, serving as the support structure for the entire machine tool, is made of high-strength cast iron, providing good stability and load-bearing capacity. The base 1 has mounting holes for fixing the worktable 2 and the tool magazine 3. The worktable 2 is mounted on the base 1 in a matched configuration with the machine head 7, and is driven by precision guide rails and a servo motor, enabling precise movement in the X and Y axes, and is used to place the workpiece to be processed. The tool magazine 3 is located on the base 1 on one side of the worktable 2, housing various cutting tools and enabling rapid tool changing via an automatic tool changer, improving processing efficiency. The column 4 includes a first column 41 and a second column 42, respectively positioned on the left and right sides of the base 1, and can be welded from high-quality steel to ensure structural stability. The height of the column 4 is designed according to processing requirements, providing support for the crossbeam 5. The crossbeam 5 spans across the first column 41 and the second column 42, and is made of high-strength aluminum alloy, being lightweight and high-strength. A precision guide rail assembly 6 is provided along the length of the crossbeam 5 to support and guide the movement of the machine head 7.

[0058] Multiple movable machine heads 7 are mounted on the guide rail assembly 6. Each machine head 7 is equipped with an independent rotary spindle and tool clamping device, allowing for independent machining operations. The machine head 7 contacts the guide rail assembly 6 via a slider, achieving smooth movement. Each machine head 7 is equipped with a corresponding drive assembly 9, which is mounted on the crossbeam 5. The drive assembly 9 uses a combination of a linear motor or servo motor and a lead screw, and the control system precisely controls the movement speed and position of the machine head 7 on the guide rail assembly 6. A detection device 8 (such as an ultrasonic ranging sensor or a laser ranging sensor) is installed between two adjacent machine heads 7 to monitor the actual distance between the two machine heads 7 in real time and feed the data back to the control system. The control system is based on a PLC or industrial computer and integrates a motion control card, sensor interface, and alarm module 300. The control system receives data from the detection device 8 and judges it according to a preset safe distance threshold. When the distance between adjacent machine heads 7 is detected to be less than the safe distance, an audible and visual alarm signal is immediately issued, and the control system adjusts the movement speed of the machine head 7 or stops its movement by controlling the drive assembly 9 to prevent the corresponding two machine heads 7 from getting closer and to prevent collisions.

[0059] Through the above embodiments, the machine tool of this application not only realizes simultaneous processing of multiple machine heads 7, improving processing efficiency, but also effectively prevents collisions between machine heads 7 through the integrated detection device 8 and control system, ensuring the safe operation of the machine tool.

[0060] In one embodiment, reference Figure 1 and Figure 4 The control system includes:

[0061] Acquisition module 100: Serving as the input terminal of the control system, it is directly connected to the detection device 8. The acquisition module 100 is responsible for receiving in real-time, precise distance data between two adjacent machine heads 7 transmitted by the detection device 8. This data is typically transmitted in digital signal form, ensuring data accuracy and transmission speed.

[0062] Comparison module 200: Closely connected to acquisition module 100, it is responsible for comparing the received real-time distance data with a preset safe distance threshold. The comparison module 200 has a built-in efficient algorithm that can quickly determine whether the real-time distance is below the safe distance, providing accurate judgment for subsequent alarm and control operations.

[0063] Alarm module 300: Connected to comparison module 200, alarm module 300 is activated immediately when comparison module 200 detects that the real-time distance is less than the safe distance. Alarm module 300 is designed with audible and visual alarm functions, which quickly attract the operator's attention by emitting a loud alarm sound and flashing lights, ensuring that they can take timely measures to deal with potential collision risks.

[0064] Control module 400: Connected to either the comparison module 200 or the alarm module 300, and serving as the core of the control system, the control module 400 is directly connected to the drive assembly 9. When the alarm module 300 issues an alarm signal, the control module 400 responds immediately by sending control commands to the drive assembly 9 to implement one of the following two safety measures: drive the two corresponding machine heads 7 to move in opposite directions to avoid collision; or lock the machine heads 7, ensuring that they stop moving at their current position until the operator manually clears the alarm and readjusts the machine tool status.

[0065] In one embodiment, reference Figure 1 and Figure 4 The detection device 8 includes a sensor 81 and a sensing mating part 82. The sensor 81 is a high-precision ranging sensor, typically installed on one of two adjacent machine heads 7. The sensor 81 can be selected according to actual needs, such as an ultrasonic sensor, a laser ranging sensor, or an infrared sensor. These sensors are characterized by high precision, high sensitivity, and fast response speed, and can measure the distance between themselves and the sensing mating part 82 on the adjacent machine head 7 in real time. The sensing mating part 82 is the part that mates with the sensor 81, typically installed on the other of the two adjacent machine heads 7. The shape, size, and material of the sensing mating part 82 should be designed according to the type and characteristics of the sensor 81 to ensure that the two can work accurately and stably. For example, when the sensor 81 is an ultrasonic sensor, the sensing mating part 82 can be designed as a reflective surface; when the sensor 81 is a laser ranging sensor, the sensing mating part 82 can be designed as a diffuse reflective surface or a specular reflective surface.

[0066] During the machine tool design phase, the installation positions and quantities of sensors 81 and sensing mating parts 82 are determined based on the layout and movement trajectory of the machine head 7. This ensures that a detection device 8 is installed between each adjacent machine head 7 to achieve comprehensive coverage and real-time monitoring. Sensors 81 emit signals such as ultrasonic waves, lasers, or infrared rays, which are reflected upon encountering the sensing mating parts 82. Sensors 81 receive the reflected signals and calculate the distance to the sensing mating parts 82 based on parameters such as signal propagation time or phase difference. Sensors 81 transmit the real-time measured distance data to the acquisition module 100 of the control system via cable or wirelessly. The acquisition module 100 receives and processes this data, comparing it with a preset safe distance threshold. When the real-time distance is less than the safe distance threshold, the comparison module 200 triggers the alarm module 300, issuing an alarm signal. Simultaneously, the control module 400 receives the alarm signal and, according to a preset safety strategy, controls the drive assembly 9 to move the machine head 7 in the opposite direction or lock it to prevent collisions.

[0067] In one embodiment, reference Figure 1 and Figure 4Based on the alarm signal, the control module 400 controls the corresponding drive component 9 to drive the machine head 7 to move in the opposite direction.

[0068] The control system also includes:

[0069] The motion detection module 500 is connected to the control module 400 and the alarm module 300. The motion detection module 500 is used to detect the motion status of each drive component 9 in real time based on the alarm signal, and generate a feedback signal based on the motion of the drive component 9. The feedback signal contains the motion signal of the drive component 9 that is currently in motion.

[0070] The control module 400 is also used to acquire the motion status of each drive component 9 in real time, and based on the motion signal of the drive component 9, the control module 400 is used to control the corresponding drive component 9 to drive the currently moving head 7 to move in the opposite direction.

[0071] In this embodiment, the motion detection module 500 is connected to both the control module 400 and the alarm module 300. Its main function is to detect the motion state of each drive component 9 in real time and generate feedback signals based on these states. The motion detection module 500 can achieve this function by reading sensor data (such as position sensors, speed sensors, etc.) built into the drive components 9. When the detection device 8 detects that the distance between adjacent machine heads 7 is less than the safe distance, the alarm module 300 issues an alarm signal. Upon receiving the alarm signal, the motion state detection module 500 immediately begins working, detecting the motion state of each drive component 9. This includes detecting which machine heads 7 are moving, their speed, and direction of movement. Based on the detected motion state, the motion detection module 500 generates corresponding feedback signals. These signals describe the current motion of the machine heads 7 in detail, providing a decision-making basis for the control module 400. According to the feedback signals, the control module 400 determines which machine heads 7 need to stop immediately or move in the opposite direction to avoid collision. Then, the control module 400 sends control commands to the corresponding drive components 9, causing these machine heads 7 to move in the opposite direction or stop safely.

[0072] During the movement of the machine head 7, the motion detection module 500 continues to monitor the motion status of the drive assembly 9 in real time and sends new feedback signals to the control module 400. The control module 400 continuously adjusts the control commands based on these signals to ensure that the machine head 7 moves safely and stably. By introducing the motion detection module 500, the multi-head machine tool of this embodiment can more precisely control the movement of the machine head 7, avoiding potential collision risks. The real-time feedback signals provided by the motion detection module 500 enable the control module 400 to quickly respond to alarm signals and take appropriate control measures. This not only improves the safety and stability of the machine tool but also ensures the continuity and efficiency of the machining process.

[0073] In one embodiment, reference Figure 1 , Figure 3 and Figure 4 The machine tool has four machine heads 7, namely, first machine head 71, second machine head 72, third machine head 73, and fourth machine head 74. These machine heads 7 are arranged in a linear layout. A sensor 81 is provided on each side of the second machine head 72. This means that the second machine head 72 can simultaneously monitor the distance between its adjacent first machine head 71 and third machine head 73. A sensing engagement part 82 is provided on each side of the third machine head 73. These sensing engagement parts 82 cooperate with the sensors 81 on the second machine head 72 and the fourth machine head 74 to measure distance. The design of the sensing engagement parts 82 should ensure compatibility with the sensors 81 to provide accurate distance measurement results. A sensing engagement part 82 is provided on the side of the first machine head 71 closest to the second machine head 72, which cooperates with the sensor 81 on the second machine head 72 to measure the distance between the first machine head 71 and the second machine head 72. A sensor 81 is provided on the side of the fourth machine head 74 closest to the third machine head 73. This sensor 81 cooperates with the sensing engagement part 82 on the third head 73 to measure the distance between the fourth head 74 and the third head 73.

[0074] When the machine tool is running, the sensor 81 on the second head 72 monitors the distance between it and the first head 71 and the third head 73 in real time. Simultaneously, the sensing engagement part 82 on the third head 73 works in conjunction with the sensors 81 on the second head 72 and the fourth head 74 to provide accurate distance measurement data. If the distance between adjacent head 7s is detected to be less than a preset safe distance, the machine tool's control system will immediately issue an alarm signal and take corresponding control measures, such as driving the head 7 to move in the opposite direction or locking its current position, to avoid collision.

[0075] For example, when the second head 72 moves towards the third head 73, the acquisition module 100 acquires the distance between the second head 727 and the third head 737 in real time, and then sends the acquired distance to the comparison module 200 for comparison. When it is determined that the distance between the second head 72 and the third head 73 is less than the safe distance, a signal is sent to the alarm module 300, which then issues an alarm signal. Simultaneously with issuing the alarm signal, the alarm module 300 sends an alarm trigger signal to the motion detection module 500, causing the motion detection module 500 to begin detecting the motion state of each drive component 9 and generate a feedback signal based on the motion of the drive component 9. Based on the feedback signal, the control module 400 controls the second drive component 92 paired with the second head 72 to move the second head 72 in the opposite direction. In this embodiment, the second head 72 moves towards the first head 71.

[0076] Furthermore, during the movement of the second head 72 towards the first head 71, the acquisition module 100 continues to acquire the distance between the first head 71 and the second head 72 in real time, and sends the acquired distance to the comparison module 200 for judgment. When the acquired distance between the second head 72 and the first head 71 is less than the safe distance, the alarm module 300 still issues an alarm to indicate that the distance between the second head 72 and the first head 71 is less than the safe distance, and the control module 400 controls the second head 72 to stop moving or move in the opposite direction. Whether to stop moving or move in the opposite direction can be set according to specific needs. The principle has been explained in the above implementation method and will not be repeated here.

[0077] In another specific embodiment, the detection device can be configured in other ways as needed. For example, a sensor 81 is provided on the side of the second head 72 near the first head 71, a sensing engagement part 82 is provided on the side of the third head 73 near the fourth head 74, a sensing engagement part 82 is provided on the side of the first head 71 near the second head 72, and a sensor 81 is provided on the side of the fourth head 74 near the third head 73. Furthermore, a preset distance is maintained between the second head 72 and the third head 73 at their closest positions. This arrangement is based on the same principle as the aforementioned detection device arrangement in terms of sensing and control methods, and will not be elaborated further here.

[0078] In one embodiment, reference Figure 1 and Figure 2 The crossbeam 5 is a single unit (shown in the attached diagram), and a set of guide rails 6 is mounted on the crossbeam 5. All machine heads 7 are mounted on the same guide rails 6. The single-unit crossbeam 5 has higher rigidity and stability, and can more effectively resist vibration and deformation during machining. The guide rails 6 on the crossbeam 5 guide the movement of the machine heads 7. The guide rails 6 include two parallel guide rails and corresponding sliders, fixed to the crossbeam 5, providing a stable and smooth movement path for the machine heads 7. The design of the guide rails 6 should ensure sufficient precision and rigidity to meet the machining requirements of the machine tool. The four machine heads 7, namely the first machine head 71, the second machine head 72, the third machine head 73, and the fourth machine head 74, are all mounted on the same guide rails 6. Each machine head 7 is connected to the guide rails 6 via a slider, ensuring that the machine head 7 can move smoothly along the guide rails. The relative positions of the machine heads 7 can be adjusted according to machining requirements, but their movement paths always remain on the guide rails 6.

[0079] In one embodiment, reference Figure 1 and Figure 2The guide rail assembly 6 includes a first guide rail 61 and a second guide rail 62, each with two machine heads 7. The movement of the four machine heads 7 is supported and guided by two independent guide rails, improving the machine tool's flexibility and processing efficiency. The guide rail assembly 6 is divided into two groups in the middle, namely the first guide rail 61 and the second guide rail 62, with a gap between them. This allows the first and second machine heads 71 ​​and 72 to be mounted on the first guide rail 61, and the third and fourth machine heads 73 and 74 to be mounted on the second guide rail 62. The arrangement of the two spaced guide rails further avoids interference between the machine heads 7 during their travel. Additionally, to simplify the design and improve reliability, sensors 81 or sensing mating parts 82 can be installed at the ends of the first and fourth machine heads 71 ​​(on the side furthest from the other machine heads 7) for distance monitoring with adjacent fixed structures or boundaries.

[0080] In one embodiment, reference Figure 1 , Figure 2 and Figure 3 The overall structure of the support column includes three columns (first column 41, second column 42, and third column 43) and two sub-beams 5 (first sub-beam 51 and second sub-beam 52). The first column 41 and second column 42 are located on either side of the machine tool, serving as the main support structure. The third column 43 is located between the first column 41 and second column 42, providing additional support and stability for the machine tool. The first sub-beam 51 spans across the first column 41 and third column 43, forming a stable support structure. The second sub-beam 52 spans across the second column 42 and third column 43, parallel and opposite to the first sub-beam 51. A first guide rail 61 is mounted on the first sub-beam 51, providing a stable movement path for the machine head 7. The second guide rail 62 is mounted on the second sub-beam 52, parallel and opposite to the first guide rail 61, providing a movement path for another set of machine heads 7. Four machine heads 7, namely the first machine head 71, the second machine head 72, the third machine head 73, and the fourth machine head 74, are respectively mounted on the first guide rail 61 and the second guide rail 62. Specifically, the first machine head 71 and the second machine head 72 can be mounted on the first guide rail 61, while the third machine head 73 and the fourth machine head 74 are mounted on the second guide rail 62. Each machine head 7 is connected to the corresponding guide rail via a slider, ensuring that they can move smoothly along the guide rail.

[0081] In this embodiment, since the machine heads 7 are distributed on two independent sets of guide rails, the arrangement of the sensors 81 and sensing mating parts 82 needs to consider additional spatial layout and distance measurement algorithms. For example, a sensor 81 (or sensing mating part 82) can be set on each side of each machine head 7, and an algorithm can be used to compensate for the distance difference caused by the machine heads 7 being distributed on two guide rails. When the machine tool is running, the four machine heads 7 move smoothly along the first guide rail 61 and the second guide rail 62 respectively, performing positioning and processing operations according to processing requirements. The sensors 81 and sensing mating parts 82 monitor the distance between adjacent machine heads 7 (or between machine heads 7 and fixed structures) in real time and send the data to the machine tool's control system. Based on the received distance data, the control system determines whether there is a risk of collision and takes corresponding control measures, such as driving the machine heads 7 to move in the opposite direction, adjusting the moving speed, or locking the current position.

[0082] Further, refer to Figure 2 Two machine heads 7 on the first guide rail 61 are slidably mounted on the first guide rail 61 through a pair of first slider groups 63, and two machine heads 7 on the second guide rail 62 are slidably mounted on the second guide rail 62 through a pair of second slider groups 64. The first guide rail 61 includes a first sub-guide rail 611, a second sub-guide rail 612 and a third sub-guide rail 613 arranged sequentially from top to bottom.

[0083] A first drive assembly 91 for driving the first machine head 71 is provided between the first sub-guide rail 611 and the second sub-guide rail 612. The first drive assembly 91 includes a first motor and a first lead screw. The first motor is provided on the first sub-beam 51. One end of the first lead screw is connected to the first motor and the other end of the first lead screw is connected to the first machine head 71.

[0084] A second drive assembly 92 for driving the second machine head 72 is provided between the second sub-guide rail 612 and the third sub-guide rail 613. The second drive assembly 92 includes a second motor and a second lead screw. The second motor is provided on the first sub-beam 51. One end of the second lead screw is connected to the second motor, and the other end of the second lead screw is connected to the second machine head 72.

[0085] The second guide rail 62 is symmetrically arranged with the first guide rail 61. The second guide rail 62 is provided with a third drive assembly 93 for driving the third machine head 73 and a fourth drive assembly 94 for driving the fourth machine head 74. The third drive assembly 93 is symmetrically arranged with the first drive assembly 91, and the fourth drive assembly 94 is symmetrically arranged with the second drive assembly 92.

[0086] refer to Figure 1 , Figure 3 and Figure 5 A second aspect of the present invention provides a method for controlling the distance between machine heads. Using any of the machine tools described above, the control method includes the following steps:

[0087] S100: Real-time acquisition of the distance between adjacent machine heads 7.

[0088] Specifically, a sensor 81 (or distance sensor) is installed on each head unit 7 to monitor the distance between adjacent heads unit 7 in real time. The sensor 81 can be installed on the side or front of the head unit 7 to ensure accurate measurement of the distance to adjacent heads unit 7. Simultaneously, a sensing mating part 82 (or reflector) is installed at a corresponding position on each adjacent head unit 7 to work in conjunction with the sensor 81, thereby improving the accuracy of distance measurement. The control system receives the distance data transmitted by the sensor 81 in real time and calculates the real-time distance between adjacent heads unit 7.

[0089] S200: Compare the acquired real-time distance with the preset safe distance.

[0090] Specifically, the control system has one or more preset safety distance thresholds, which are set based on factors such as the machine tool's processing requirements, the size of the machine head 7, and potential errors. The control system compares the real-time distance acquired in real time with the preset safety distances to determine whether there is a risk of collision.

[0091] S300: When the real-time distance is less than the safe distance, an alarm signal will be issued.

[0092] Specifically, if the real-time distance is less than the preset safe distance, the control system will immediately issue an alarm signal. The alarm signal can be an audible, visual, or other form of alert, so that operators can promptly detect and address potential collision risks.

[0093] S400: Based on the alarm signal, control the head 7 that triggered the alarm to move in the opposite direction or lock.

[0094] Specifically, upon receiving an alarm signal, the control system will immediately take measures to avoid collisions. Depending on the situation, it can choose to control the alarm-triggered machine head 7 to move in the opposite direction to increase the distance between it and the adjacent machine head 7; or it can choose to lock its current position to prevent the machine head 7 from continuing to move. The control measures can be implemented by sending control commands to the machine head 7, including the direction of movement, speed, and locking status. After taking measures, the control system will continue to monitor the distance between adjacent machine heads 7 and adjust the control measures according to the actual situation to ensure the safe operation of the machine tool.

[0095] The following is a specific implementation procedure provided:

[0096] Step 1: Initialize the settings. Before starting the machine tool, set the initial position and processing path of each head 7 through the control system, and set the safety distance threshold between adjacent heads 7.

[0097] Step 2: After the machine tool is started, each machine head 7 moves along the guide rail group 6 to the designated position for processing under the drive of the drive component 9 according to the preset processing program.

[0098] Step 3: The detection device 8 continuously monitors the distance between adjacent machine heads 7 and transmits the data to the control system in real time.

[0099] Step four: Once the distance between adjacent machine heads 7 is detected to be less than the preset safe distance threshold, the control system immediately triggers the alarm mechanism, issues an alarm signal, and controls the relevant drive components 9 to slow down or stop the movement of the machine head 7 to ensure the safe operation of the machine tool.

[0100] Step 5: Upon receiving the alarm signal, the operator must immediately check the machine tool status to confirm whether there is mechanical interference or misoperation, and manually adjust or restart the machine tool if necessary.

[0101] The headstock spacing control method in this embodiment allows the machine tool to monitor the spacing between adjacent headstocks 7 in real time during operation and compare it with a preset safety distance. When the real-time distance is less than the safety distance, the control system will promptly issue an alarm signal and take corresponding control measures to avoid collisions. This method improves the safety and stability of the machine tool, ensuring the smooth execution of machining tasks. Furthermore, this method is applicable to other similar machine tools and has broad application prospects. In summary, the headstock spacing control method in this embodiment provides an efficient and reliable collision prevention mechanism for the machine tool, offering strong protection for its safe operation and machining quality.

[0102] In one embodiment, reference Figure 4 and Figure 6 Step S400 specifically includes:

[0103] S401: Based on alarm signals, the motion status of each drive component 9 is detected in real time;

[0104] S402: Based on the motion state of the drive component 9, a feedback signal is generated, which includes the motion signal of the drive component 9 that is currently in motion;

[0105] S403: Based on the feedback signal, control the corresponding drive component 9 to drive the currently moving head 7 to move in the opposite direction.

[0106] This method monitors the motion state of the drive component 9 in real time and generates a feedback signal. The control module 400 then controls the machine head 7 to move in the opposite direction based on the feedback signal to avoid collision.

[0107] Specifically, based on the alarm signal, the control module 400 controls the alarm-triggered head 7 to move in the opposite direction, while simultaneously monitoring the motion status of each drive component 9. Upon receiving the alarm signal, the control module 400 immediately initiates real-time monitoring of each drive component 9. This includes detecting the current operating status of the drive component 9 (e.g., whether it is running, its speed, and direction). Based on the real-time monitoring data of the drive components 9, a feedback signal is generated. This feedback signal contains the motion signal of the currently moving drive component 9, such as its speed and direction. The control module 400 analyzes the feedback signal to determine the alarm-triggered head 7 and its corresponding drive component 9. Then, the control module 400 issues a control command to the drive component 9, instructing it to move the head 7 in the opposite direction. The speed and direction of movement can be adjusted according to actual conditions to ensure that the head 7 can smoothly and quickly increase the distance between itself and adjacent head 7s, avoiding collisions. During the movement, the motion status of the drive components 9 continues to be monitored in real time, and the control commands are adjusted as needed to ensure that the head 7 can accurately move to a safe position.

[0108] The machine head 7 spacing control method in this embodiment enables the system to quickly respond and control the triggered machine head 7 to move in the opposite direction when the spacing between adjacent machine heads 7 is less than a preset safety distance. This method improves the machine tool's response speed and accuracy, effectively preventing collision accidents. Simultaneously, it enhances the machine tool's automation and intelligence levels, providing strong protection for safe operation and machining quality.

[0109] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A machine tool, comprising a base (1), a worktable (2), a tool magazine (3), a column (4), and a crossbeam (5), wherein the worktable (2) and the tool magazine (3) are disposed on the base (1), the column (4) comprises a first column (41) and a second column (42), the first column (41) and the second column (42) are disposed on both sides of the base (1), the crossbeam (5) is transversely mounted on the first column (41) and the second column (42), and the crossbeam (5) is provided with a guide rail assembly (6) along its length, characterized in that, Also includes: Multiple machine heads (7) are movably mounted on the guide rail assembly (6); Multiple drive components (9) are disposed on the crossbeam (5) and paired with multiple machine heads (7) for driving the corresponding machine head (7) to move individually on the guide rail assembly (6); The detection device (8) is set between two adjacent machine heads (7) to detect the real-time distance between the two adjacent machine heads (7); The control system is connected to the detection device (8) and multiple drive components (9). When it detects that the distance between two adjacent machine heads (7) is less than a preset safe distance, it issues an alarm signal and controls the drive components (9) to prevent the corresponding two machine heads (7) from continuing to approach each other.

2. The machine tool according to claim 1, characterized in that, The control system includes: The acquisition module (100) is connected to the detection device (8) and is used to acquire the real-time distance between two adjacent machine heads (7); The comparison module (200) is connected to the acquisition module (100) and is used to compare the acquired real-time distance with a preset safe distance. An alarm module (300), connected to a comparison module (200), is used to issue an alarm signal when the real-time distance is less than the safe distance; The control module (400), connected to the comparison module (200), is used to control the drive assembly (9) to drive the two corresponding machine heads (7) to move in opposite directions or to lock them.

3. The machine tool according to claim 2, characterized in that, The detection device (8) includes a sensor (81) and a sensing engagement part (82). In two adjacent machine heads (7), one machine head (7) is provided with a sensor (82) and the other machine head (7) is provided with a sensing engagement part (82). The sensor (81) and the sensing engagement part (82) are located on opposite sides of the adjacent machine heads (7). The sensor (81) and the sensing engagement part (82) cooperate to detect the real-time distance between the two adjacent machine heads (7).

4. The machine tool according to claim 3, characterized in that, The control system further includes: A motion detection module (500) is connected to the control module (400) and the alarm module (300). The motion detection module (500) is used to detect the motion state of each of the drive components (9) based on the alarm signal and generate a feedback signal based on the motion of the drive components (9). The feedback signal includes the motion signal of the drive component (9) that is currently in motion. The control module (400) is also used to acquire the motion state of each of the drive components (9) in real time, and based on the motion signal of the drive component (9), the control module (400) is used to control the corresponding drive component (9) to drive the currently moving head (7) to move in the opposite direction.

5. The machine tool according to claim 4, characterized in that, The machine head (7) is configured as four, including the first machine head (71), the second machine head (72), the third machine head (73) and the fourth machine head (74) in sequence; In this configuration, a sensor (81) is provided on each side of the second machine head (72), and a sensing engagement part (82) is provided on each side of the third machine head (73). The sensing engagement part (82) is provided on the side of the first machine head (71) closest to the second machine head (72), and the sensor (81) is provided on the side of the fourth machine head (74) closest to the third machine head (73); or, The second head (72) is provided with a sensor (81) on the side near the first head (71), and the third head (73) is provided with a sensing engagement part (82) on the side near the fourth head (74). The first head (71) is provided with the sensing engagement part (82) on the side near the second head (72), and the fourth head (74) is provided with the sensor (81) on the side near the third head (73). At the closest position between the second head (72) and the third head (73), the second head (72) and the third head (73) are provided with a preset distance.

6. The machine tool according to claim 5, characterized in that, The crossbeam is integrally formed, and a set of guide rails (6) is provided on the crossbeam. The machine head (7) is provided on the same set of guide rails (6).

7. The machine tool according to claim 5, characterized in that, The guide rail assembly (6) includes a first guide rail (61) and a second guide rail (62), and two machine heads (7) are provided on each of the first guide rail (61) and the second guide rail (62).

8. The machine tool according to claim 7, characterized in that, The column (4) also includes a third column (43) located between the first column (41) and the second column (42), and the crossbeam (5) includes a first sub-crossbeam (51) and a second sub-crossbeam (52). The first sub-crossbeam (51) is horizontally supported on the first column (41) and the third column (43), and the second sub-crossbeam (52) is horizontally supported on the second column (42) and the third column (43). The first guide rail (61) is mounted on the first sub-beam (51), and the second guide rail (62) is mounted on the second sub-beam (52).

9. A method for controlling the distance between machine heads, characterized in that, The control method using the machine tool according to any one of claims 1-8 includes the following steps: Real-time distance between adjacent machine heads (7) is obtained; The obtained real-time distance is compared with the preset safe distance; An alarm signal is issued when the real-time distance is less than the safe distance; Based on the alarm signal, the machine head (7) that triggered the alarm is controlled to move in the opposite direction or to lock.

10. The method for controlling the distance between machine heads according to claim 9, characterized in that, Based on the alarm signal, the machine head (7) that triggered the alarm is controlled to move in the opposite direction; The specific steps of controlling the machine head (7) that triggered the alarm to move in the opposite direction based on the alarm signal include: Based on the alarm signal, the motion status of each of the drive components is detected in real time; Based on the motion state of the drive component (9), a feedback signal is generated, the feedback signal containing the motion signal of the drive component currently in motion; Based on the feedback signal, the corresponding drive component (9) is controlled to drive the currently moving head (7) to move in the opposite direction.

Images