A cleaning device for tool synchronization of a tool magazine

Abstract

The present invention belongs to the technical field of CNC machine tool tool magazine equipment, in particular to a cleaning device for tool synchronization in a tool magazine, which includes a motor. A connecting shaft is fixedly connected to the output shaft of the motor, and a tool disc is fixedly connected to the bottom end of the connecting shaft. A plurality of tool magazines are fixed on the tool disc. Each tool magazine includes a tool magazine tool sleeve and a side frame. A resistance acquisition module, a foreign object acquisition module and an actuator are also arranged on the tool magazine. The resistance acquisition module is used to detect the resistance gradient during the tool insertion process in real time. The foreign object acquisition module is used to detect the foreign object coverage rate on the tool surface in real time. The actuator is used to clean the foreign objects on the tool surface. In the present invention, by detecting the foreign object coverage rate on the tool surface and the resistance gradient during the tool insertion process in real time, the foreign object situation on the tool surface can be accurately judged. When the amount of foreign objects exceeds the reasonable range, the actuator automatically triggers the cleaning action to timely remove the foreign objects on the tool surface, ensuring the positioning accuracy and clamping force of the tool, thereby improving the accuracy of the machining size and the surface quality.

Description

Technical Field

[0001] The present invention relates to the technical field of tool magazine equipment for numerical control machine tools, and particularly to a cleaning device for synchronizing tools in a tool magazine. Background Art

[0002] In the field of modern machining, the tool magazine, as an important part of a numerical control machine tool, undertakes the important task of storing and managing tools. During the frequent use and replacement of tools, foreign matters such as chips, oil stains, and dust are likely to adhere to the tool surface. These foreign matters will not only affect the positioning accuracy and clamping force of the tool, resulting in machining dimension deviation and surface quality degradation, but also may accelerate the wear of the tool and tool magazine components, shorten their service life, increase the maintenance cost and downtime of the equipment.

[0003] Traditional tool cleaning methods mainly rely on manual operation. This method is not only inefficient but also difficult to ensure the timeliness and consistency of cleaning. Especially in an automated machining production line, manual cleaning cannot meet the fast and efficient production requirements and is likely to become a bottleneck in the production process. Therefore, it is of great practical significance to develop a device that can automatically clean foreign matters on the tool surface during the synchronization process of inserting the tool into the tool magazine. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a cleaning device for synchronizing tools in a tool magazine.

[0005] A cleaning device for synchronizing tools in a tool magazine proposed by the present invention includes a motor. A connecting shaft is fixedly connected to the output shaft of the motor. A tool disc is fixedly connected to the bottom end of the connecting shaft. A plurality of tool magazines distributed in a circular array are fixed on the tool disc. Each tool magazine includes a tool magazine tool sleeve and a side frame. A resistance acquisition module, a foreign matter acquisition module, and an execution mechanism are further provided on the tool magazine. The resistance acquisition module is used to detect the resistance gradient during the tool insertion process in real time. The foreign matter acquisition module is used to detect the foreign matter coverage rate on the tool surface in real time. The execution mechanism is used to clean the foreign matters on the tool surface. During the synchronization process of inserting the tool into the tool magazine, the foreign matter acquisition module samples the tool surface image, calculates the foreign matter coverage rate, the resistance acquisition module acquires the tool insertion resistance data, calculates the resistance gradient, and the control module receives the data acquired by the resistance acquisition module and the foreign matter acquisition module in real time, conducts comprehensive analysis, and then generates a foreign matter evaluation coefficient. By comparing the foreign matter evaluation coefficient with a pre-set foreign matter evaluation coefficient reference threshold, it is judged whether the amount of foreign matters on the tool surface is within a reasonable range, and the working state of the execution mechanism is controlled according to the comparison result. If the amount of foreign matters on the tool surface is not within a reasonable range, the execution mechanism will trigger a cleaning action to automatically clean the foreign matters on the tool surface.

[0006] Preferably, the resistance acquisition module is fixed on the inner wall of the tool magazine tool sleeve, the foreign object acquisition module is fixed on the side of the tool magazine tool sleeve, and the control module is fixed on the top of the tool disc; in this way, the resistance gradient during the tool insertion process can be better detected in real time through the resistance acquisition module, and the foreign object coverage rate on the tool surface can be better detected in real time through the foreign object acquisition module.

[0007] Preferably, the actuator includes an air pump, a hose and a jet head arranged inside the side frame. The air pump is fixed inside the side frame, and the hose is connected between the jet head and the air pump; after receiving the corresponding instruction from the control module, the air pump will start, and then convey gas to the jet head through the hose, and the gas is sprayed from the nozzle of the jet head onto the tool, so as to realize the cleaning of foreign objects on the tool surface.

[0008] Preferably, the actuator further includes an electric push rod, a rack and a gear. The jet head is rotatably connected to the inner wall of the side frame through a shaft column. The electric push rod is fixed on the inner wall of the side frame, the rack is fixedly connected to the output shaft of the electric push rod, the gear is fixedly sleeved on the shaft column, and the rack is meshed with the gear; after receiving the corresponding instruction from the control module, the electric push rod will start, and then drive the rack to reciprocate through its output shaft, and then the rack meshes with the gear to drive the shaft column and the jet head to rotate reciprocally, so as to change the blowing angle and thus remove foreign objects faster.

[0009] Preferably, a discharge channel is provided on the side of the tool magazine tool sleeve. A receiving frame is detachably connected to the discharge channel. The receiving frame is provided with a feed inlet on the side close to the tool magazine tool sleeve, and a dense ventilation hole is provided on the side far from the tool magazine tool sleeve; when the air flow blows towards the tool, the air flow will be dispersed into two air flows. One air flow goes along the surface of the tool and then directly enters the discharge channel, and the other air flow goes along the surface of the tool to the rear of the tool and then flows into the discharge channel. In this way, the tool can be comprehensively cleaned, and the removed foreign objects can be collected into the receiving frame. After detaching the receiving frame from the discharge channel, the collected foreign objects can be poured out.

[0010] Preferably, a plurality of guiding plates distributed up and down are fixed in the receiving frame, and the guiding plates are inclined upwards towards the side of the tool magazine tool sleeve; the foreign objects in the air flow are guided by the guiding plates, so that the foreign objects can be collected at the bottom of the receiving frame faster, and the foreign objects can also be prevented from adhering to the ventilation holes, resulting in poor air flow.

[0011] Preferably, slide bars are respectively provided on both sides of the discharge channel, and slide openings for inserting the slide bars are respectively formed on the inner walls of both sides of the receiving frame; aligning the slide openings with the slide bars can install the receiving frame on the discharge channel, so that the receiving frame is convenient to disassemble and assemble.

[0012] Preferably, the control logic flow of the control module for controlling the working state of the actuator is as follows:

[0013] I. Real-time synchronous detection:

[0014] During the synchronization process of inserting the tool into the tool magazine, the system performs the following:

[0015] The foreign object collection module samples the surface image of the tool and calculates the foreign object coverage rate.

[0016] The resistance collection module collects the tool insertion resistance data and calculates the resistance gradient.

[0017] II. Calculation of the foreign object evaluation coefficient:

[0018] The foreign object evaluation coefficient is updated once according to the set period.

[0019] III. Threshold comparison and decision-making:

[0020] When the following conditions are met, the cleaning action of the actuator is triggered: Reference threshold and .

[0021] Preferably, the calculation formula of the foreign object evaluation coefficient is:

[0022]

[0023] Wherein, is the reference resistance gradient, is the duration of the current processing cycle, is the reference value of the equipment maintenance cycle.

[0024] Preferably, the calculation formula of the reference threshold is:

[0025]

[0026] Wherein, is the cumulative number of tool changes in the current shift, which automatically increments after each tool change.

[0027] Compared with the prior art, the present invention provides a cleaning device for tool synchronization in a tool magazine, which has the following beneficial effects:

[0028] 1. A cleaning device for tool synchronization in a tool magazine can accurately judge the foreign object situation on the tool surface by real-time detecting the foreign object coverage rate on the tool surface and the resistance gradient during the tool insertion process. When the amount of foreign objects exceeds the reasonable range, the actuator automatically triggers the cleaning action to timely remove the foreign objects on the tool surface, ensuring the positioning accuracy and clamping force of the tool, thereby improving the accuracy of the machining dimensions and the surface quality. Reducing tool wear and damage caused by foreign objects, extending the service life of the tool, and reducing the tool cost.

[0029] 2. A cleaning device for tool synchronization in a tool magazine. This cleaning device can complete the cleaning work during the synchronization process of inserting the tool into the tool magazine, eliminating the need for additional downtime for tool cleaning, achieving the synchronization of cleaning and production, and greatly improving production efficiency. The automated cleaning process avoids the cumbersome and uncertain manual cleaning, ensuring the timeliness and consistency of cleaning, and making the production process smoother.

[0030] 3. A cleaning device for tool synchronization in a tool magazine. The actuator uses a jet head to blow air to clean the tool surface, and drives the jet head to rotate reciprocally through an electric push rod to change the blowing angle, enabling more comprehensive and rapid removal of foreign objects on the tool surface. The design of the discharge channel and the receiving frame enables the removed foreign objects to be effectively collected, preventing foreign objects from flying and accumulating in the working area and keeping the working environment clean. At the same time, the receiving frame is detachable for convenient cleaning of the collected foreign objects. The guiding plate in the receiving frame can guide the foreign objects in the air flow to be collected at the bottom of the receiving frame faster, preventing foreign objects from adhering to the ventilation holes and ensuring smooth air flow, further improving the cleaning effect.

[0031] 4. A cleaning device for tool synchronization in a tool magazine. The calculation formulas for the foreign object evaluation coefficient and the reference threshold consider factors such as the current machining cycle duration, the reference value of the equipment maintenance cycle, and the cumulative number of tool changes in the current shift, etc., and can be adaptively adjusted according to the actual production situation, making the cleaning device more flexible and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of a cleaning device for tool synchronization in a tool magazine proposed by the present invention;

[0033] Figure 2 is a schematic overall structural diagram of a cleaning device for tool synchronization in a tool magazine proposed by the present invention;

[0034] Figure 3 is a schematic structural diagram of the tool magazine of a cleaning device for tool synchronization in a tool magazine proposed by the present invention;

[0035] Figure 4 is a schematic internal structural diagram of the tool sleeve of the tool magazine of a cleaning device for tool synchronization in a tool magazine proposed by the present invention;

[0036] Figure 5 For the present invention Figure 4 the enlarged structural schematic diagram at A;

[0037] Figure 6 is a schematic installation structural diagram of the discharge channel of a cleaning device for tool synchronization in a tool magazine proposed by the present invention;

[0038] Figure 7Schematic structural diagram of the material receiving frame of a cleaning device for tool synchronization in a tool magazine proposed by the present invention.

[0039] In the figure: 1, motor; 2, connecting shaft; 3, tool disc; 4, tool magazine; 401, tool magazine tool sleeve; 402, side frame; 5, resistance acquisition module; 6, foreign object acquisition module; 7, control module; 8, air pump; 9, hose; 10, jet head; 11, electric push rod; 12, rack; 13, gear; 14, shaft column; 15, discharge channel; 16, material receiving frame; 17, slide bar; 18, slide opening; 19, ventilation hole; 20, feed inlet; 21, guiding plate. Detailed implementation manners

[0040] 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 the embodiments.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are 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.

[0042] Refer to Figures 1 - 7 , a cleaning device for tool synchronization in a tool magazine, including a motor 1, the output shaft of the motor 1 is fixedly connected with a connecting shaft 2, the bottom end of the connecting shaft 2 is fixedly connected with a tool disc 3, and a plurality of tool magazines 4 distributed in an annular array are fixed on the tool disc 3. The tool magazine 4 includes a tool magazine tool sleeve 401 and a side frame 402. A resistance acquisition module 5, a foreign object acquisition module 6 and an actuator are further arranged on the tool magazine 4; the resistance acquisition module 5 is used for detecting the resistance gradient during the tool insertion process in real time, the foreign object acquisition module 6 is used for detecting the foreign object coverage rate on the tool surface in real time, and the actuator is used for cleaning the foreign objects on the tool surface;

[0043] It should be noted that the resistance acquisition module 5 can be an integrated piezoelectric force sensor array or other devices capable of detecting the resistance gradient during the tool insertion process in real time. The foreign object acquisition module 6 can be an optical detection module or other devices capable of detecting the foreign object coverage rate on the tool surface in real time. The control module 7 is an embedded controller (such as the STM32 series), integrated with a data fusion algorithm. Therefore, the resistance acquisition module 5, the foreign object acquisition module 6 and the control module 7 are not specifically limited herein and can be selected according to actual needs;

[0044] During use, during the synchronization process of inserting the tool into the tool magazine 4, the foreign object collection module 6 samples the surface image of the tool, calculates the foreign object coverage rate, the resistance collection module 5 collects the tool insertion resistance data, calculates the resistance gradient, and the control module 7 receives the data collected by the resistance collection module 5 and the foreign object collection module 6 in real time, conducts comprehensive analysis, then generates a foreign object evaluation coefficient, compares the foreign object evaluation coefficient with a pre-set reference threshold of the foreign object evaluation coefficient to determine whether the amount of foreign objects on the tool surface is within a reasonable range, and controls the working state of the actuator according to the comparison result. If the amount of foreign objects on the tool surface is not within a reasonable range, the actuator will trigger a cleaning action to automatically clean the foreign objects on the tool surface.

[0045] Among them, the resistance collection module 5 is fixed on the inner wall of the tool magazine sleeve 401, the foreign object collection module 6 is fixed on the side of the tool magazine sleeve 401, and the control module 7 is fixed on the top of the tool disc 3;

[0046] During use, in this way, it is possible to better detect the resistance gradient during the tool insertion process in real time through the resistance collection module 5 and better detect the foreign object coverage rate on the tool surface in real time through the foreign object collection module 6.

[0047] Among them, the actuator includes an air pump 8, a hose 9 and a jet head 10 arranged inside the side frame 402. The air pump 8 is fixed inside the side frame 402, and the hose 9 is connected between the jet head 10 and the air pump 8;

[0048] During use, after receiving the corresponding instruction from the control module 7, the air pump 8 will start, and then send gas to the jet head 10 through the hose 9. The gas sprays from the nozzle of the jet head 10 towards the tool, thereby realizing the cleaning of foreign objects on the tool surface.

[0049] Furthermore, the actuator further includes an electric push rod 11, a rack 12 and a gear 13. The jet head 10 is rotatably connected to the inner wall of the side frame 402 through a shaft column 14. The electric push rod 11 is fixed on the inner wall of the side frame 402. The rack 12 is fixedly connected to the output shaft of the electric push rod 11. The gear 13 is fixedly sleeved on the shaft column 14, and the rack 12 is meshed with the gear 13;

[0050] During use, after receiving the corresponding instruction from the control module 7, the electric push rod 11 will start, and then drive the rack 12 to reciprocate through its output shaft. Then the rack 12 meshes with the gear 13 to drive the shaft column 14 and the jet head 10 to reciprocate and rotate, thereby changing the blowing angle and thus clearing foreign objects faster.

[0051] Among them, the input end and the output end of the resistance collection module 5 are electrically connected to the output end and the input end of the control module 7 respectively. The input end and the output end of the foreign object collection module 6 are electrically connected to the output end and the input end of the control module 7 respectively. The output end of the control module 7 is electrically connected to the input ends of the air pump 8 and the electric push rod 11 respectively.

[0052] Further, a discharge channel 15 is provided on the side of the tool magazine tool sleeve 401. A receiving frame 16 is detachably connected to the discharge channel 15. A feed inlet 20 is provided on the side of the receiving frame 16 close to the tool magazine tool sleeve 401, and a plurality of ventilation holes 19 are provided on the side of the receiving frame 16 away from the tool magazine tool sleeve 401;

[0053] During use, when the air flow blows towards the tool, the air flow will be dispersed into two air flows. One air flow follows the surface of the tool and then directly enters the discharge channel 15, and the other air flow follows the surface of the tool to the rear of the tool and then flows into the discharge channel 15. In this way, the tool can be comprehensively cleaned, and the foreign objects removed can be collected into the receiving frame 16. After the receiving frame 16 is detached from the discharge channel 15, the collected foreign objects can be poured out.

[0054] Further, a plurality of guiding plates 21 distributed up and down are fixed in the receiving frame 16, and the guiding plates 21 are inclined upwards towards the side of the tool magazine tool sleeve 401;

[0055] During use, the guiding plates 21 are used to guide the foreign objects in the air flow, so that the foreign objects can be collected at the bottom of the receiving frame 16 more quickly, and the foreign objects can be prevented from adhering to the ventilation holes 19, resulting in poor air flow.

[0056] Wherein, sliding strips 17 are respectively provided on both sides of the discharge channel 15, and sliding openings 18 for inserting the sliding strips 17 are respectively formed on the inner walls of both sides of the receiving frame 16;

[0057] During use, aligning the sliding openings 18 with the sliding strips 17 can install the receiving frame 16 on the discharge channel 15, so that the receiving frame 16 is convenient to disassemble and assemble.

[0058] In another embodiment, through the cooperation between the resistance acquisition module 5, the foreign object acquisition module 6, the control module 7 and the actuator, the control logic for intelligently cleaning the foreign objects on the tool surface is specifically as follows:

[0059] 1. Real-time synchronous detection:

[0060] During the synchronization process of inserting the tool into the tool magazine 4 (about a 2 - 3 second window period), the system executes:

[0061] The optical module samples the tool surface image at a frequency of 100 Hz and calculates the foreign object coverage rate;

[0062] The mechanical module acquires the tool insertion resistance data at a frequency of 1 kHz and calculates the resistance gradient.

[0063] 2. Calculation of the foreign object evaluation coefficient:

[0064] The foreign object evaluation coefficient is updated every 50 ms, and the calculation is as follows:

[0065]

[0066] Among them, is the reference resistance gradient (the calibrated value of the equipment, unit: N / s), is the duration of the current processing cycle (min), is the reference value of the equipment maintenance cycle (min), is the time decay factor: making the tool that has not been cleaned for a long time more likely to trigger cleaning.

[0067] Among them, the foreign object coverage rate on the tool surface is calculated as follows:

[0068]

[0069] Among them, is the foreign object coverage area (mm²) obtained by CCD image analysis, is the standard cleaning surface area of the tool (mm²).

[0070] The resistance gradient during the tool insertion process is calculated as follows:

[0071]

[0072] Among them, is the maximum resistance value during the tool insertion process (N), is the reference resistance of the tool sleeve inserted without load (N), is the actual time consumed during the current tool insertion process (s).

[0073] III. Threshold comparison and decision-making:

[0074] Cleaning is triggered when the following conditions are met: and ;

[0075] Among them, the reference threshold is calculated by the formula:

[0076]

[0077] Among them, is the cumulative number of tool replacements in the current shift, which automatically increments after each tool replacement. Logarithmic function characteristic: The reference threshold rises slowly with the number of tool replacements, avoiding frequent cleaning while adapting to the trend of tool contamination accumulation.

[0078] Dual-condition constraint: Avoid false triggering only due to a falsely high foreign object coverage rate (such as reflection interference).

[0079] Real-time interrupt response: After detecting the over-standard signal, pause the tool inserting action within 5 ms and start the cleaning program.

[0080] The above are only the preferred specific embodiments of the present invention, 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, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A cleaning device for tool synchronization in a tool magazine, comprising a motor (1), characterized in that, The output shaft of the motor (1) is fixedly connected to a connecting shaft (2). The bottom end of the connecting shaft (2) is fixedly connected to a cutter head (3). A plurality of tool magazines (4) are fixed on the cutter head (3). The tool magazine (4) includes a tool magazine tool sleeve (401) and a side frame (402). A resistance acquisition module (5), a foreign object acquisition module (6) and an actuator are further arranged on the tool magazine (4); The resistance acquisition module (5) detects the resistance gradient during the tool insertion process in real time. The foreign object acquisition module (6) detects the foreign object coverage rate on the tool surface in real time. The actuator is used to clean the foreign objects on the tool surface; The control module (7) receives the data collected by the resistance acquisition module (5) and the foreign object acquisition module (6), generates a foreign object evaluation coefficient, compares it with a preset reference threshold, and controls the working state of the actuator according to the comparison result; The resistance acquisition module (5) is fixed on the inner wall of the tool magazine tool sleeve (401). The foreign object acquisition module (6) is fixed on the side of the tool magazine tool sleeve (401). The control module (7) is fixed on the top of the cutter head (3); The actuator includes an air pump (8), a hose (9) and a jet head (10) arranged inside the side frame (402). The air pump (8) is fixed inside the side frame (402). The hose (9) is connected between the jet head (10) and the air pump (8). It also includes an electric push rod (11), a rack (12) and a gear (13). The jet head (10) is rotatably connected to the inner wall of the side frame (402) through a shaft column (14). The electric push rod (11) is fixed on the inner wall of the side frame (402). The rack (12) is fixedly connected to the output shaft of the electric push rod (11). The gear (13) is fixedly sleeved on the shaft column (14). The rack (12) is meshed with the gear (13); A discharge channel (15) is arranged on the side of the tool magazine tool sleeve (401). A receiving frame (16) is detachably connected to the discharge channel (15). A feed inlet (20) is arranged on the side of the receiving frame (16) close to the tool magazine tool sleeve (401). A plurality of ventilation holes (19) are arranged on the side of the receiving frame (16) far from the tool magazine tool sleeve (401).

2. The cleaning device for tool synchronization of a tool magazine according to claim 1, characterized in that, A plurality of guiding plates (21) distributed up and down are fixed in the receiving frame (16). The guiding plates (21) are inclined upward toward the side of the tool magazine tool sleeve (401).

3. A cleaning device for tool synchronization of a tool magazine according to claim 1, characterized in that, Sliding strips (17) are respectively arranged on both sides of the discharge channel (15). Sliding openings (18) for inserting the sliding strips (17) are respectively formed on the inner walls of both sides of the receiving frame (16).

4. The control method of a cleaning device for tool synchronization in a tool magazine according to claim 1, characterized in that, Including the following steps: I. Real-time synchronous detection: During the synchronous process of inserting the tool into the tool magazine (4), the system executes: The foreign object collection module (6) samples the surface image of the cutting tool and calculates the foreign object coverage rate ; The resistance acquisition module (5) acquires the resistance data of the insertion tool and calculates the resistance gradient ; II. Calculation of foreign object evaluation coefficient: Update the foreign object evaluation coefficient once according to the set period ; III. Threshold comparison and decision: The cleaning action of the actuator is triggered when the following conditions are met: and , is the reference threshold value.

5. The control method of a cleaning device for tool synchronization in a tool magazine according to claim 4, characterized in that, The calculation formula of the foreign object evaluation coefficient is: Among them, is the reference resistance gradient, is the duration of the current processing cycle, is the reference value of the equipment maintenance cycle, is the time decay factor.

6. The control method of a cleaning device for tool synchronization in a tool magazine according to claim 5, characterized in that The calculation formula of the reference threshold is: Among them, is the cumulative number of tool changes for the current shift, which automatically increments after each tool change is completed.

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