A chain replacement device for the maintenance of a chain-type tool magazine

Abstract

The present invention belongs to the technical field of chain-type tool magazines, in particular to a chain replacement device for maintaining a chain-type tool magazine, which includes a housing cover and a spatial motion mechanism. The housing cover is installed on the free end of the spatial motion mechanism. Two symmetrically distributed shaft columns are rotatably connected inside the housing cover. Sprockets matching the chain-type tool magazine are respectively installed at the bottom ends of the shaft columns. The shaft columns are connected with an angle adjustment mechanism, and a pushing mechanism is also arranged inside the shaft columns. It further includes: a displacement acquisition module, a phase difference acquisition module, a thrust acquisition module, and a control module. In the present invention, the position of the device is real-time fed back by the displacement acquisition module, and the PID controller precisely controls the spatial motion mechanism to adjust the rotational speed of the servo motor, so as to quickly and accurately move the device to the vicinity of the chain tool magazine and keep it parallel. In the precision alignment stage, the angle adjustment mechanism can finely adjust the angle of the device. A series of automated positioning and alignment operations greatly improve the efficiency and accuracy of chain replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of chain-type tool magazines, and particularly to a chain replacement device for the maintenance of chain-type tool magazines. Background Art

[0002] In the field of modern machining, chain-type tool magazines are widely used in various machining centers. They undertake the key task of quickly and accurately replacing tools, and play an indispensable role in improving machining efficiency and quality. However, with the long-term and frequent use of the tool magazine, the chain, as the core transmission component, will inevitably have problems such as wear and fatigue, which will further affect the normal operation of the tool magazine. Once the chain fails, it needs to be replaced and maintained in time.

[0003] The traditional chain replacement process usually relies on manual operation. Maintenance personnel need to manually install and debug the new chain with the sprockets of the tool magazine relying on rich experience and professional skills. This process is not only cumbersome and time-consuming, but also has extremely high technical requirements for maintenance personnel. During the installation process, it is very difficult to accurately ensure the phase matching between the chain and the sprocket and the uniformity of chain tension, which is likely to cause phenomena such as jamming and tooth skipping of the chain during subsequent operation, further affecting the service life and machining accuracy of the tool magazine. Therefore, it is extremely urgent to develop a device that can replace the chain efficiently, accurately and intelligently. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a chain replacement device for the maintenance of chain-type tool magazines.

[0005] A chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention includes a housing cover and a spatial motion mechanism. The housing cover is installed at the free end of the spatial motion mechanism. Inside the housing cover, two symmetrically distributed shaft columns are rotatably connected. At the bottom ends of the shaft columns, sprockets matching the chain-type tool magazine are respectively installed. The shaft columns are connected with an angle adjustment mechanism, and a pushing mechanism is also arranged inside the shaft columns. It further includes: a displacement acquisition module for detecting the displacement of the device, installed at the end of the output shaft of the angle adjustment mechanism; a phase difference acquisition module for detecting the phase difference of the sprockets, installed on the side of the shaft column; a thrust acquisition module for detecting the thrust distribution, installed on the contact surface between the pushing mechanism and the chain; a control module installed on the housing cover, receiving the information collected by each module and performing system control; moving the device to a position near the chain tool magazine and keeping the positions of the device and the chain tool magazine parallel, and then either pre-installing the chain to be replaced onto the two sprockets on the device in advance, then starting the device, the displacement acquisition module real-time feedbacks the position of the device, then the PLC calculates the deviation from the target coordinates, then the PID controller controls the spatial motion mechanism to simultaneously adjust the rotational speed of the servo motor, then the phase difference acquisition module captures the phase of the tool magazine sprockets and calculates the phase difference Δθ, then the angle adjustment mechanism finely adjusts the angle of the device until the positions of the two groups of sprockets on the device and the chain tool magazine match, and then the pushing mechanism will push the chain downward, and the thrust acquisition module real-time monitors the thrust, and the fuzzy controller dynamically adjusts the pushing pressure, so as to install the chain onto the two sprockets of the chain tool magazine.

[0006] Preferably, the angle adjustment mechanism includes a servo motor fixed to the inner wall of the top of the housing cover. Gears are respectively installed on the output shaft of the servo motor and on one of the shaft columns adjacent to the servo motor. The two gears are meshed and connected; after receiving the corresponding instruction from the control module, the servo motor drives one of the gears to rotate through the output shaft, and then drives one of the shaft columns to rotate through the meshing transmission of the two gears, and then drives the chain to rotate through the two sprockets, realizing the adjustment of the angle.

[0007] Preferably, the pushing mechanism includes a plurality of electric push rods distributed around the path of the chain. The output shaft of the electric push rod can contact the link of the chain, and the top of the electric push rod is fixedly connected to the inner wall of the top of the housing cover; after receiving the corresponding instruction from the control module, the electric push rod will push the link of the chain through the output shaft, thereby pushing the entire chain downward.

[0008] Preferably, the spatial motion mechanism is composed of a transverse slide, a longitudinal slide, and a front-back slide. The transverse slide, the longitudinal slide, and the front-back slide control the left-right, up-down, and front-back movements respectively. The longitudinal slide is installed at the free end of the transverse slide, the front-back slide is installed at the free end of the longitudinal slide, and the housing is installed at the free end of the front-back slide. Then, the transverse slide, the longitudinal slide, and the front-back slide can move in the left-right, up-down, and front-back movement directions respectively according to the instructions of the control module, so as to achieve spatial movement and align the device with the chain guide frame.

[0009] Preferably, the displacement acquisition module is installed at the end of the output shaft of the servo motor, and the phase difference acquisition module is fixedly connected to the inner wall of the top of the housing through a fixing bracket. In this way, the displacement of the device can be better detected by the displacement acquisition module, and the phase difference of the sprocket can be better detected by the phase difference acquisition module.

[0010] Preferably, a positioning disk is fixedly sleeved on the shaft column above the sprocket, and the edge of the positioning disk can partially cover the tooth gap of the sprocket. When installing the chain on the two sprockets of the device, it is only necessary to make the chain link contact the positioning disk, so as to ensure the accurate installation position of the chain.

[0011] Preferably, it further includes a tension uniformity acquisition module and no less than two damage identification modules. The tension uniformity acquisition module is used to detect the tension uniformity of the chain in real time, and the damage identification module is used to identify the damage of the chain link.

[0012] Preferably, the tension uniformity acquisition module is fixed on the top of the housing through a support rod, and the damage identification module is fixed on the inner wall of the top of the housing through a T-shaped frame. In this way, the tension uniformity of the chain can be better detected by the tension uniformity acquisition module, and the damage of the chain link can be better identified by the damage identification module.

[0013] Preferably, the control logic flow of the control module when replacing the chain is specifically as follows:

[0014] Positioning control stage: The displacement acquisition module real-time feedbacks the device position → The PLC calculates the deviation from the target coordinate → The PID controller controls the spatial motion mechanism and simultaneously adjusts the rotation speed of the servo motor;

[0015] Precision alignment stage: The phase difference acquisition module captures the phase of the tool magazine sprocket → The image processor calculates the phase difference Δθ → The angle adjustment mechanism finely adjusts the device angle;

[0016] Pushing execution stage: The thrust acquisition module real-time monitors the thrust → The fuzzy controller dynamically adjusts the pressure of the electric push rod.

[0017] Preferably, the fault diagnosis logic of the control module is specifically as follows:

[0018] Jamming detection:

[0019] When the thrust F ≥ 250 N and the displacement ΔL ≤ 1 mm last for 200 ms, perform a reverse retraction of 5 mm and then retry.

[0020] Misalignment warning:

[0021] When the phase difference Δθ ≥ 0.5°, trigger a three - level alarm: Level 1: Acoustic - optical prompt; Level 2: Reduce the speed to 0.2 m / s; Level 3: Emergency stop.

[0022] Wear monitoring:

[0023] Calculate the chain wear coefficient according to the formula: When λ ≥ 1.2%, prompt for maintenance.

[0024] Compared with the prior art, the present invention provides a chain replacement device for the maintenance of a chain - type tool magazine, having the following beneficial effects:

[0025] 1. A chain replacement device for the maintenance of a chain - type tool magazine. This device uses a displacement acquisition module to real - time feedback the device position, cooperates with a PLC to calculate the deviation from the target coordinate, and a PID controller precisely controls the spatial motion mechanism to adjust the servo motor speed, so as to quickly and accurately move the device near the chain tool magazine and keep it parallel. In the precise alignment stage, the phase - difference acquisition module captures the phase of the tool - magazine sprocket, the image processor calculates the phase difference Δθ, and the angle adjustment mechanism can finely adjust the device angle to ensure that the positions of the two groups of sprockets on the device and the chain tool magazine are precisely matched. This series of automated positioning and alignment operations greatly improve the efficiency and accuracy of chain replacement. Compared with traditional manual operations, it greatly shortens the replacement time and can effectively avoid subsequent operation problems caused by installation errors.

[0026] 2. A chain replacement device for the maintenance of a chain - type tool magazine. The pushing - out mechanism uses multiple electric push rods distributed around the chain path. Under the command of the control module, the output shafts of the electric push rods push the chain links, and the entire chain is smoothly pushed downward. At the same time, the thrust acquisition module real - time monitors the thrust, and the fuzzy controller dynamically adjusts the pressure of the electric push rods according to the monitoring data to ensure that the force on the chain during the process of loading into the sprocket is uniform, avoiding damage to the chain and sprocket caused by excessive or too small thrust, and improving the reliability and stability of chain installation.

[0027] 3. A chain replacement device for the maintenance of a chain-type tool magazine. The control module has a perfect fault diagnosis logic. In terms of jamming detection, when the thrust F ≥ 250 N and the displacement ΔL ≤ 1 mm last for 200 ms, it will automatically execute a reverse retraction of 5 mm and then try again, effectively preventing equipment damage caused by jamming. For misalignment warning, when the phase difference Δθ ≥ 0.5°, three-level alarms will be triggered in sequence, from acoustic and optical prompts to speed reduction operation and then to emergency stop, timely reminding the operator to take corresponding measures to avoid serious faults caused by the misalignment of the chain and the sprocket. In terms of wear monitoring, the chain wear coefficient is calculated according to the formula. When λ ≥ 1.2%, maintenance is prompted, which is convenient for the operator to timely grasp the wear condition of the chain, arrange maintenance work in advance, extend the service life of the chain, and ensure the stable operation of the tool magazine.

[0028] 4. A chain replacement device for the maintenance of a chain-type tool magazine. The positioning disk fixedly sleeved on the shaft column has its edge part covering the sprocket tooth gap. When installing the chain into the device sprocket, just making the chain link contact the positioning disk can ensure the accurate installation position of the chain, greatly simplifying the pre-installation process of the chain and reducing the technical difficulty and work intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the schematic diagram of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention;

[0030] Figure 2 is the overall structural schematic diagram of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention;

[0031] Figure 3 is the internal structural schematic diagram of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention;

[0032] Figure 4 is the installation structural schematic diagram of the thrust acquisition module of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention;

[0033] Figure 5 is the structural schematic diagram of a chain-type tool magazine after replacing the upper chain proposed by the present invention;

[0034] Figure 6 is the structural schematic diagram of the spatial motion mechanism of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention;

[0035] Figure 7 is the partial structural schematic diagram inside the housing of a chain replacement device for the maintenance of a chain-type tool magazine proposed by the present invention.

[0036] In the figure: 1. Housing cover; 2. Shaft column; 3. Sprocket; 4. Phase difference acquisition module; 5. Thrust acquisition module; 6. Control module; 7. Servo motor; 8. Gear; 9. Electric push rod; 10. Transverse sliding table; 11. Longitudinal sliding table; 12. Front and rear sliding table; 13. Fixed bracket; 14. Tension uniformity acquisition module; 15. Support rod; 16. Damage identification module; 17. T-shaped frame; 18. Positioning disk. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Refer to Figures 1-7 , a chain replacement device for maintaining a chain-type tool magazine, including a housing cover 1 and a spatial motion mechanism. The housing cover 1 is installed on the free end of the spatial motion mechanism. Two symmetrically distributed shaft columns 2 are rotatably connected inside the housing cover 1. Sprockets 3 matching the chain-type tool magazine are respectively installed at the bottom ends of the shaft columns 2. The shaft columns 2 are connected with an angle adjustment mechanism. A pushing mechanism is also arranged inside the shaft columns 2. The device further includes:

[0040] A displacement acquisition module for detecting the displacement of the device, installed at the end of the output shaft of the angle adjustment mechanism; a phase difference acquisition module 4 for detecting the sprocket phase difference, installed on the side of the shaft column 2; a thrust acquisition module 5 for detecting the thrust distribution, installed on the contact surface between the pushing mechanism and the chain; a control module 6 installed on the housing cover 1, receiving the information collected by each module and performing system control;

[0041] During use, move the device to a position near the chain tool magazine and keep the device parallel to the position of the chain tool magazine. Then, either pre-install the chain to be replaced onto the two sprockets 3 on the device in advance, and then start the device. The displacement acquisition module will provide real-time feedback on the device position. Next, the PLC calculates the deviation from the target coordinates, and then the PID controller controls the spatial motion mechanism to simultaneously adjust the rotational speed of the servo motor 7. Then, the phase difference acquisition module 4 captures the phase of the tool magazine sprocket and calculates the phase difference Δθ. Then, the angle adjustment mechanism finely adjusts the angle of the device until the positions of the two groups of sprockets 3 on the device and the chain tool magazine match. Then, the pushing mechanism will push the chain downward, and the thrust acquisition module 5 monitors the thrust in real time. The fuzzy controller dynamically adjusts the pushing pressure, thereby loading the chain onto the two sprockets of the chain tool magazine.

[0042] Furthermore, it further includes a tension uniformity acquisition module 14 and no less than two damage identification modules 16. The tension uniformity acquisition module 14 is used to detect the tension uniformity of the chain in real time, and the damage identification module 16 is used to identify damage to the chain links.

[0043] Among them, the tension uniformity acquisition module 14 is fixed to the top of the housing 1 through a support rod 15, and the damage identification module 16 is fixed to the inner wall of the top of the housing 1 through a T-shaped frame 17;

[0044] During use, in this way, it is possible to better detect the tension uniformity of the chain through the tension uniformity acquisition module 14 and better identify damage to the chain links through the damage identification module 16.

[0045] It should be noted that the displacement acquisition module can be a high-resolution encoder (17-bit absolute type) or other devices capable of detecting the displacement of the device. The phase difference acquisition module 4 can be a laser phase sensor or other devices capable of detecting the phase difference of the sprockets. The thrust acquisition module 5 can be a matrix pressure sensing array or other devices capable of detecting the thrust distribution. The tension uniformity acquisition module 14 can be an infrared thermal imaging module (installed 1.2 m above the top of the device) or other devices capable of detecting the tension uniformity of the chain. The damage identification module 16 can be a multi-spectral vision system (20 million pixels, defect recognition rate ≥ 99.7%) or other devices capable of identifying damage to the chain links. Therefore, the displacement acquisition module, the phase difference acquisition module 4, the thrust acquisition module 5, the tension uniformity acquisition module 14, and the damage identification module 16 are not specifically defined here and can be selected according to actual needs. The control module 6 is the collaborative application of a PLC, a PID controller, a fuzzy controller, etc.;

[0046] Among them, the angle adjustment mechanism includes a servo motor 7 fixed to the inner wall of the top of the housing 1. Gears 8 are respectively installed on the output shaft of the servo motor 7 and a shaft column 2 adjacent to the servo motor 7, and the two gears 8 are meshed and connected;

[0047] During use, after the servo motor 7 receives the corresponding instruction from the control module 6, it will drive one of the gears 8 to rotate through the output shaft, and then drive one of the shafts 2 to rotate through the meshing transmission of the two gears 8, and then drive the chain to rotate through the two sprockets 3 to achieve angle adjustment.

[0048] Among them, the pushing mechanism includes a plurality of electric push rods 9 distributed around the path of the chain. The output shaft of the electric push rod 9 can contact the link of the chain, and the top of the electric push rod 9 is fixedly connected to the inner wall of the top of the housing 1;

[0049] During use, after the electric push rod 9 receives the corresponding instruction from the control module 6, it will push the link of the chain through the output shaft, thereby pushing the entire chain downward.

[0050] Among them, the spatial motion mechanism is composed of a transverse slide 10, a longitudinal slide 11 and a front-back slide 12. The transverse slide 10, the longitudinal slide 11 and the front-back slide 12 control the left-right, up-down and front-back movements respectively. The longitudinal slide 11 is installed at the free end of the transverse slide 10, the front-back slide 12 is installed at the free end of the longitudinal slide 11, and the housing 1 is installed at the free end of the front-back slide 12;

[0051] During use, it can move in the left-right, up-down and front-back movement directions respectively according to the instructions of the control module 6 through the transverse slide 10, the longitudinal slide 11 and the front-back slide 12, so as to achieve spatial movement for the device to align with the chain guide frame.

[0052] Among them, the displacement acquisition module is installed at the end of the output shaft of the servo motor 7, and the phase difference acquisition module 4 is fixedly connected to the inner wall of the top of the housing 1 through the fixing bracket 13;

[0053] During use, in this way, the displacement of the device can be better detected through the displacement acquisition module, and the sprocket phase difference can be better detected through the phase difference acquisition module 4.

[0054] Among them, a positioning disk 18 is fixedly sleeved on the shaft 2 above the sprocket 3, and the edge of the positioning disk 18 can partially cover the tooth gap of the sprocket 3;

[0055] During use, when installing the chain on the two sprockets 3 of the device, it is only necessary to make the link of the chain contact the positioning disk 18, so as to ensure the accurate installation position of the chain.

[0056] In another embodiment, through the cooperation between the displacement acquisition module, the phase difference acquisition module 4, the thrust acquisition module 5, the tension uniformity acquisition module 14, the damage identification module 16, the control module 6 and the spatial motion mechanism, the angle adjustment mechanism, and the pushing mechanism, the control logic for automatically completing the chain replacement is specifically as follows:

[0057] Positioning control stage: The encoder provides real-time feedback on the device position → The PLC calculates the deviation from the target coordinates → The PID controller controls the spatial motion mechanism and simultaneously adjusts the rotational speed of the servo motor 7:

[0058] ( ω: Motor angular velocity; Δx: Position deviation; Kp Ki Kd: PID coefficients).

[0059] Precision alignment stage: The vision system captures the phase of the tool magazine sprocket → The image processor calculates the phase difference Δθ → The angle adjustment mechanism finely adjusts the device angle:

[0060] ( Δα: Device adjustment angle; Z1: Number of teeth of the tool magazine sprocket; Z2: Number of teeth of the device sprocket).

[0061] Pushing execution stage: The pressure sensor monitors the thrust in real time → The fuzzy controller dynamically adjusts the pressure of the electric push rod 9:

[0062] ( P: Output pressure; μ: Friction coefficient; m: Chain mass; k: Stiffness coefficient; A: Piston area; n: Safety factor).

[0063] II. Core calculation formula system

[0064] Synchronous positioning accuracy calculation:

[0065]

[0066] ( δ: Positioning error; p: Sprocket pitch; ε: Encoder pulse error; r: Sprocket pitch circle radius; α: Pressure angle).

[0067] Dynamics equation during the pushing process:

[0068]

[0069] ( F: Required thrust; v: Pushing speed; s: Pushing stroke; : Engagement angle).

[0070] Vibration suppression algorithm:

[0071]

[0072] ( : Optimal damping ratio; Allowable overshoot).

[0073] III. Key control parameters

[0074] Positioning stage:

[0075] Maximum moving speed: 0.8 m / s; Acceleration limit: 2.5 m / s²; Repeated positioning accuracy: ±0.02 mm;

[0076] Alignment stage:

[0077] Angle compensation range: ±5°; Phase matching accuracy: ±0.1°; Compensation response time: ≤120 ms;

[0078] Pushing-in stage:

[0079] Initial contact pressure: 50 N ± 5 N; Maximum allowable thrust: 300 N; Speed-pressure coupling coefficient: Kvp = 0.85 N·s / m.

[0080] IV. Fault diagnosis logic

[0081] Jamming detection:

[0082] When the thrust F ≥ 250 N and the displacement ΔL ≤ 1 mm last for 200 ms, execute a reverse retraction of 5 mm and then retry;

[0083] Misalignment warning:

[0084] When the phase difference Δθ ≥ 0.5°, trigger a three-level alarm: Level 1: Acoustic and optical prompt; Level 2: Reduce speed to 0.2 m / s; Level 3: Emergency stop;

[0085] Wear monitoring:

[0086] Calculate the chain wear coefficient according to the formula:

[0087]

[0088] (Prompt for maintenance when λ ≥ 1.2%).

[0089] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A chain replacement device for the maintenance of a chain-type tool magazine, comprising a housing cover (1) and a spatial motion mechanism, characterized in that, The shell cover (1) is installed on the free end of the spatial motion mechanism. Inside the shell cover (1), there are two symmetrically distributed shaft columns (2) rotatably connected. At the bottom ends of the shaft columns (2), sprockets (3) matching the chain-type tool magazine are respectively installed. The shaft columns (2) are connected with an angle adjustment mechanism, and a pushing mechanism is also arranged inside the shaft columns (2). Further included are: A displacement acquisition module for detecting the displacement of the device, installed at the end of the output shaft of the angle adjustment mechanism; a phase difference acquisition module (4) for detecting the sprocket phase difference, installed on the side of the shaft column (2); a thrust acquisition module (5) for detecting the thrust distribution, installed on the contact surface between the pushing mechanism and the chain; a control module (6) installed on the shell cover (1), receiving the information collected by each module and performing system control; The angle adjustment mechanism includes a servo motor (7) fixed to the inner wall of the top of the shell cover (1). Gears (8) are respectively installed on the output shaft of the servo motor (7) and on a shaft column (2) adjacent to the servo motor (7). The two gears (8) are meshed and connected; The pushing mechanism includes a plurality of electric push rods (9) distributed around the path of the chain. The output shaft of the electric push rod (9) can contact the link of the chain. The top of the electric push rod (9) is fixedly connected to the inner wall of the top of the shell cover (1); The control logic flow of the control module (6) when replacing the chain is specifically as follows: Positioning control stage: The displacement acquisition module real-time feedbacks the device position → The PLC calculates the deviation from the target coordinate → The PID controller controls the spatial motion mechanism and simultaneously adjusts the rotation speed of the servo motor (7); Precision alignment stage: The phase difference acquisition module (4) captures the phase of the tool magazine sprocket → The image processor calculates the phase difference Δθ → The angle adjustment mechanism finely adjusts the device angle; Pushing execution stage: The thrust acquisition module (5) real-time monitors the thrust → The fuzzy controller dynamically adjusts the pressure of the electric push rod (9).

2. The chain replacement device for chain-type tool magazine maintenance according to claim 1, characterized in that The spatial motion mechanism is composed of a transverse slide (10), a longitudinal slide (11), and a front-back slide (12). The transverse slide (10), the longitudinal slide (11), and the front-back slide (12) respectively control the left-right, up-down, and front-back movements. The longitudinal slide (11) is installed on the free end of the transverse slide (10). The front-back slide (12) is installed on the free end of the longitudinal slide (11). The shell cover (1) is installed on the free end of the front-back slide (12).

3. A chain replacement device for the maintenance of a chain-type tool magazine according to claim 1, characterized in that The displacement acquisition module is installed at the end of the output shaft of the servo motor (7). The phase difference acquisition module (4) is fixedly connected to the inner wall of the top of the shell cover (1) through a fixing bracket (13).

4. A chain replacement device for the maintenance of a chain-type tool magazine according to claim 1, characterized in that, A positioning disk (18) is fixedly sleeved on the shaft column (2) above the sprocket (3). The edge of the positioning disk (18) can partially cover the tooth gap of the sprocket (3).

5. A chain replacement device for the maintenance of a chain-type tool magazine according to claim 1, characterized in that, Further included are a tension uniformity acquisition module (14) and no less than two damage identification modules (16). The tension uniformity acquisition module (14) is used for real-time detecting the tension uniformity of the chain. The damage identification module (16) is used for identifying the damage of the chain links.

6. A chain replacement device for the maintenance of a chain-type tool magazine according to claim 5, characterized in that The tension uniformity acquisition module (14) is fixed to the top of the housing (1) through a support rod (15), and the damage identification module (16) is fixed to the inner wall of the top of the housing (1) through a T-shaped frame (17).

7. A chain replacement device for the maintenance of a chain-type tool magazine according to claim 1, characterized in that, The control module (6) has the following specific fault diagnosis logics: Jamming detection: When the thrust F ≥ 250 N and the displacement ΔL ≤ 1 mm last for 200 ms, perform a reverse retraction of 5 mm and then retry; Misalignment warning: When the phase difference Δθ ≥ 0.5°, trigger a three-level alarm: Level 1: Acoustic and optical prompt; Level 2: Reduce the speed to 0.2 m / s; Level 3: Emergency stop; Wear monitoring: Calculate the chain wear coefficient according to the formula: When λ ≥ 1.2%, prompt for maintenance.

Images