Tool changing and tool changing early warning mechanism for five-axis numerical control machining center

Abstract

The invention relates to the technical field of five-axis numerical control tool changing, in particular to a tool changing and tool changing early warning mechanism for a five-axis numerical control machining center, and solves the problems that when a tool changing mechanism of the five-axis numerical control machining center is used, a tool is often damaged, no standby tool exists, the process of waiting for reselection and replacement of the tool is needed, the tool changing time is long, and the tool changing efficiency is high. The tool changing device comprises a supporting structure, and tool changing frame structures are arranged on the two sides of the top end of the supporting structure correspondingly. According to the invention, firstly, the main tool changing module rotates a tool needing to be replaced to a position close to the tool mounting rack, and the auxiliary tool changing module rotates the same kind of tools for replacement to a position close to the tool mounting rack, so that the tools can be replaced at any time while the tools are replaced; the time for waiting for re-preparation and replacement of the cutter when the cutter of the main cutter replacement module is damaged is avoided, and the cutter replacement time can be shortened.

Description

Technical Field

[0001] The invention relates to the technical field of five-axis CNC tool changing, and in particular to a tool changing and tool changing warning mechanism for a five-axis CNC machining center. Background Art

[0002] CNC machining refers to a process method for machining parts on CNC machine tools. The process procedures of CNC machine tool machining and traditional machine tool machining are generally consistent, but there have also been significant changes. CNC machine tool machining is a mechanical machining method that uses digital information to control the displacement of parts and tools. CNC machine tool machining is an effective way to solve problems such as a wide variety of parts, small batches, complex shapes, and high precision, and to achieve efficient and automated processing;

[0003] The five-axis linkage CNC machine tool is a machine tool with high technological content and high precision, which is specially used for processing complex curved surfaces. This machine tool system has a significant influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. The five-axis linkage CNC machine tool system is a means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, turbine rotors, large diesel engine crankshafts, etc.

[0004] When the tool changing mechanism of the existing five-axis CNC machining center is in use, the tool is often damaged and there is no spare tool, which requires waiting for the tool to be reselected and replaced. The tool changing time is long and it is difficult to pre-select subsequent tools for backup; therefore, it does not meet the existing needs. In this regard, we propose a tool changing and tool changing warning mechanism for a five-axis CNC machining center. Summary of the invention

[0005] The purpose of the present invention is to provide a tool changing and tool changing warning mechanism for a five-axis CNC machining center, so as to solve the problems that the tool changing mechanism of the five-axis CNC machining center proposed in the above background technology is often damaged when in use, and there is no spare tool, resulting in the need to wait for the tool to be reselected and replaced, the tool changing time is long, and it is difficult to pre-select subsequent tools for backup.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tool changing and tool changing warning mechanism for a five-axis CNC machining center, comprising a support structure, tool changing frame structures are provided on both sides of the top of the support structure, a tool feeding assembly is provided at the center of the top of the support structure, and a plurality of driving assemblies are provided on the outer surface of the tool changing frame structure;

[0007] The driving assembly includes a driving plate, a spring groove, an electromagnet, a ladder-shaped clamping block and a compression spring. The driving plate is slidably mounted on the outer surface of the tool changing frame structure. The driving plate is provided with spring grooves on one side surface close to the tool feeding assembly and on the surface close to the bottom end. The inside of the spring grooves is slidably mounted with ladder-shaped clamping blocks. A plurality of compression springs are movably mounted between the ladder-shaped clamping blocks and the inside of the spring grooves. An electromagnet is provided near the spring groove inside the driving plate. The electromagnet can pull the ladder-shaped clamping block back to the inside of the spring groove after being energized and magnetized.

[0008] Preferably, the driving assembly also includes a connecting plate, a two-way cylinder, a piston rod, a push plate and a connecting buckle, the connecting plate is fixedly installed on one side of the driving plate close to the tool changer structure, the top and bottom surfaces of the ladder-shaped clamping block are provided with inclined surfaces, the inclined surfaces on the upper and lower sides of the ladder-shaped clamping block are provided with four telescopic grooves, the interior of the telescopic grooves are slidably installed with connecting buckles, the two-way cylinder is fixedly installed on both sides of the interior of the ladder-shaped clamping block, the upper and lower sides of the two-way cylinder are provided with output ends, the output ends of the two-way cylinder are fixedly connected to the piston rod, the outer ends of the piston rod are fixedly installed with push plates, both ends of the push plate are slidably inserted into the interior of the telescopic groove, and the push plate is fixedly connected to the connecting buckle.

[0009] Preferably, the supporting structure includes a base plate, a supporting frame, a limiting frame, a servo motor, a transmission chain, a side supporting column, a side rotating shaft, a limiting ring plate, a central supporting column and a central rotating shaft. Side supporting columns are fixedly installed on both sides of the top of the base plate, and side rotating shafts are rotatably installed inside the side supporting columns. Servo motors are fixedly installed on both sides of the top of the base plate, and the output ends of the servo motors are connected to the transmission chains, and the bottom ends of the side rotating shafts are connected to the transmission chains. A plurality of supporting frames are fixedly installed on both sides of the base plate, and limiting frames are fixedly installed on the tops of the supporting frames, and limiting ring plates are fixedly installed on the inner sides of the limiting frames. A central supporting column is fixedly installed at the center of the top of the base plate, and a central rotating shaft is rotatably installed inside the central supporting column. A notch is provided on the side of the limiting frame close to the knife feeding assembly.

[0010] Preferably, the tool changing rack structure includes a tool changing disc, an electric push rod, a pushing rod, a lifting groove and a tool placing groove, the top end of the side rotating shaft is fixedly installed with a tool changing disc, the outer surface of the tool changing disc is provided with a plurality of tool placing grooves, the top surface of the tool changing disc near the tool placing groove is fixedly installed with an electric push rod, the output end of the electric push rod is fixedly connected with a pushing rod, the bottom end surface of the tool changing disc near the tool placing groove is provided with a lifting groove, and the pushing rod is slidably inserted into the interior of the lifting groove.

[0011] Preferably, the knife feeding assembly includes a knife feeding turntable, a tool mounting frame, an outer tool clamping plate, an inner tool clamping plate, a rotating slot and a tool clamping plate, the top of the central rotating shaft is fixedly mounted with the knife feeding turntable, the tool mounting frames are slidably mounted on both sides of the knife feeding turntable, the outer tool clamping plate is rotatably mounted on the outer surface of the tool mounting frame, the inner side of the outer tool clamping plate is fixedly connected to the inner side of the outer tool clamping plate, the inner surface of the tool mounting frame is fixedly mounted with a tool clamping plate, the tool clamping plate and the surface of the tool mounting frame are provided with a rotating slot, and the inner tool clamping plate is movably inserted into the inside of the rotating slot.

[0012] Preferably, the tool placement groove is provided with a tool inside, the outer surface of the tool is provided with a tool outer groove, and the upper and lower side surfaces of the inner wall of the tool outer groove are provided with anti-drop ring grooves.

[0013] Preferably, the trapezoidal clamping blocks are all movably clamped into the interior of the outer groove of the tool, the limiting ring plates are all movably clamped into the interior of the outer groove of the tool, the outer clamping plate of the tool, the inner clamping plate of the tool and the tool clamping plate are all movably clamped into the interior of the outer groove of the tool, and the connecting buckles are all movably clamped into the interior of the anti-drop ring groove.

[0014] Preferably, a telescopic connecting rod is provided between the knife feeding turntable and the knife mounting frame, the bottom end of the driving plate slides into the gap between the outer clamping plate of the knife and the inner clamping plate of the knife, the bottom end of the pushing rod is fixedly connected to the surface of the connecting plate, the top surface of the driving plate is provided with an air hole, the air hole is through-connected with the interior of the two-way cylinder, the top of the air hole is provided with an air pipe, and the air pipe is connected to the air pump.

[0015] Preferably, a tool changing warning mechanism for a five-axis CNC machining center includes a tool changing mechanism for a five-axis CNC machining center, and also includes a multi-sensor fusion module and a five-axis CNC machining center machine tool, characterized in that: the multi-sensor fusion module includes a vibration sensor, a temperature sensor and a pressure feedback unit, the vibration sensor is arranged inside the tool placement groove, the temperature sensor is embedded in the servo motor and the ladder-shaped clamping block, and the pressure feedback unit is arranged inside the five-axis CNC machining center machine tool.

[0016] Preferably, the vibration sensor is used to monitor the abnormal vibration spectrum during the tool changing process, the temperature sensor is used to detect the risk of overheating, and the pressure feedback unit is used to collect tool clamping force data in real time and compare it with a preset threshold to determine whether the tool is loose.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention cooperates with two tool changer structures and a tool feeding assembly so that when the device is in use, one of the tool changer structures can be identified as the main tool changer module, and the other tool changer structure can be identified as the auxiliary tool changer module. When the tool needs to be changed, the main tool changer module can first rotate the tool to be replaced to the position of the tool mounting frame close to it, and the auxiliary tool changer module can rotate the same type of tool to be replaced to the position of the tool mounting frame close to it, and move the tool to the inside of the tool mounting frame through the driving assembly, and then the tool mounting frame is driven by the tool feeding rotating plate to rotate, so that the tool is rotated to the inside of the five-axis CNC machining center, so that the tool can be replaced. At the same time, the tool to be replaced is ready for tool change at any time, avoiding the need to wait for re-preparation and replacement of the tool when the tool of the main tool changer module is damaged, and the tool change time can be accelerated;

[0019] 2. The present invention cooperates with the drive assembly and the knife feeding assembly so that when the device is in use, the push rod can be driven out by the electric push rod, thereby driving the connecting plate and the drive plate to descend. At this time, the drive plate will drive the tool to synchronously descend to the position of the tool mounting frame, and at the same time, the knife feeding rotating plate rotates the tool mounting frame to rotate the tool mounting frame to the position of the drive plate. At this time, the inner clamping plate of the tool will first touch the inner surface of the outer groove of the tool, thereby driving the outer clamping plate of the tool to rotate toward the inner side of the tool mounting frame. At this time, the tool mounting frame will rotate from the outside of the drive plate, causing the drive plate to be clamped into the gap between the outer clamping plate of the tool and the inner clamping plate of the tool, until the outer clamping plate of the tool and the inner clamping plate of the tool clamp the tool, and the electric push rod will retract the push rod, thereby completing the operation of moving the tool from the tool placement groove to the inside of the tool mounting frame, thereby improving the tool changing speed of the device, and at the same time avoiding multiple collisions of the tool during tool changing, and avoiding tool wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 A cross-sectional front view of the present invention as a whole;

[0022] Figure 3 A sectional side view of the present invention as a whole;

[0023] Figure 4 It is a cross-sectional top view of the position of the knife feeding rotating plate of the present invention;

[0024] Figure 5 It is a cross-sectional top view of the position of the tool changing disc of the present invention;

[0025] Figure 6 For the present invention Figure 2 Schematic diagram of the local structure of part A;

[0026] Figure 7 For the present invention Figure 4Schematic diagram of the local structure of part B;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the local section in the CC direction.

[0028] In the figure: 1. Support structure; 101. Bottom plate; 102. Support frame; 103. Limit frame; 104. Servo motor; 105. Transmission chain; 106. Side support column; 107. Side rotating shaft; 108. Limit ring plate; 109. Center support column; 110. Center rotating shaft; 2. Tool changer structure; 201. Tool changer disc; 202. Electric push rod; 203. Push rod; 204. Lifting slot; 205. Tool placement slot; 3. Driving assembly; 301. Driving plate; 302 , connecting plate; 303, spring groove; 304, electromagnet; 305, ladder-shaped clamping block; 306, compression spring; 307, two-way cylinder; 308, piston rod; 309, push plate; 310, connecting buckle; 311, telescopic slot; 4, knife feeding assembly; 401, knife feeding rotating plate; 402, tool mounting frame; 403, tool outer clamping plate; 404, tool inner clamping plate; 405, rotating clamping slot; 406, tool clamping plate; 5, tool; 6, tool outer groove; 7, anti-drop ring groove;. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1 to 8 , an embodiment of the present invention: a tool changing and tool changing warning mechanism for a five-axis CNC machining center, comprising a support structure 1, a tool changing frame structure 2 is provided on both sides of the top of the support structure 1, a tool feeding assembly 4 is provided at the center of the top of the support structure 1, and a plurality of driving assemblies 3 are provided on the outer surface of the tool changing frame structure 2;

[0031] The driving assembly 3 includes a driving plate 301, a spring groove 303, an electromagnet 304, a ladder-shaped clamping block 305 and a compression spring 306. The driving plate 301 is slidably installed on the outer surface of the tool changer structure 2. The driving plate 301 is provided with a spring groove 303 on one side surface close to the tool feeding assembly 4 and on the surface close to the bottom end. The inside of the spring groove 303 is slidably installed with a ladder-shaped clamping block 305. A plurality of compression springs 306 are movably installed between the ladder-shaped clamping block 305 and the inside of the spring groove 303. An electromagnet 304 is provided near the spring groove 303 inside the driving plate 301. After being energized and magnetized, the electromagnet 304 can pull the ladder-shaped clamping block 305 back to the inside of the spring groove 303.

[0032] The driving assembly 3 also includes a connecting plate 302, a two-way cylinder 307, a piston rod 308, a push plate 309 and a connecting buckle 310. The connecting plate 302 is fixedly installed on the side of the driving plate 301 close to the tool changer structure 2. The top and bottom surfaces of the ladder-shaped clamping block 305 are provided with inclined surfaces. The inclined surfaces on the upper and lower sides of the ladder-shaped clamping block 305 are provided with four telescopic grooves 311. The inside of the telescopic grooves 311 is slidably installed with connecting buckles 310. The two-way cylinder 307 is fixedly installed on both sides of the inside of the ladder-shaped clamping block 305. The upper and lower sides of the two-way cylinder 307 are provided with output ends. The output ends of the two-way cylinder 307 are fixedly connected with the piston rod 308. The outer ends of the piston rod 308 are fixedly installed with push plates 309. Both ends of the push plate 309 are slidably inserted into the inside of the telescopic groove 311, and the push plate 309 is fixedly connected to the connecting buckle 310.

[0033] The support structure 1 includes a base plate 101, a support frame 102, a limit frame 103, a servo motor 104, a transmission chain 105, a side support column 106, a side shaft 107, a limit ring plate 108, a central support column 109 and a central shaft 110. The side support columns 106 are fixedly installed on both sides of the top of the base plate 101, and the side shafts 107 are rotatably installed inside the side support columns 106. The servo motors 104 are fixedly installed on both sides of the top of the base plate 101, and the output ends of the servo motors 104 are connected to There is a transmission chain 105, the bottom ends of the side rotating shafts 107 are connected to the transmission chain 105, multiple support frames 102 are fixedly installed on both sides of the base plate 101, the tops of the support frames 102 are fixedly installed with limiting frames 103, the inner sides of the limiting frames 103 are fixedly installed with limiting ring plates 108, a central support column 109 is fixedly installed at the center of the top of the base plate 101, a central rotating shaft 110 is rotatably installed inside the central support column 109, and a notch is provided on the side of the limiting frame 103 close to the knife feeding assembly 4.

[0034] Through the cooperation of the two tool changing rack structures 2 and the tool feeding assembly 4, when the device is in use, one of the tool changing rack structures 2 can be identified as the main tool changing module and the other tool changing rack structure 2 can be identified as the auxiliary tool changing module. When the tool needs to be changed, the main tool changing module can first rotate the tool 5 to be replaced to the position of the tool mounting frame 402 close to it, and the auxiliary tool changing module can rotate the same type of tool 5 to be replaced to the position of the tool mounting frame 402 close to it, and move the tool 5 to the inside of the tool mounting frame 402 through the driving assembly 3, and then the tool mounting frame 402 is driven by the tool feeding turntable 401 to rotate, so that the tool 5 is rotated to the inside of the five-axis CNC machining center, so that it can replace the tool 5. At the same time, the tool 5 prepared for replacement is ready for tool change at any time, avoiding the need to wait for re-preparation and replacement of the tool 5 when the tool 5 of the main tool changing module is damaged, which can speed up the tool change time.

[0035] The tool changing rack structure 2 includes a tool changing disc 201, an electric push rod 202, a pushing rod 203, a lifting groove 204 and a tool placement groove 205. The tool changing disc 201 is fixedly installed on the top of the side rotating shaft 107, and a plurality of tool placement grooves 205 are provided on the outer surface of the tool changing disc 201. The electric push rod 202 is fixedly installed on the top surface of the tool changing disc 201 near the tool placement groove 205, and the output end of the electric push rod 202 is fixedly connected to the pushing rod 203. The bottom end surface of the tool changing disc 201 is near the tool placement groove 205 and the lifting groove 204 is provided. The pushing rod 203 is slidably inserted into the interior of the lifting groove 204.

[0036] The knife feeding assembly 4 includes a knife feeding rotating plate 401, a tool mounting frame 402, a tool outer clamping plate 403, a tool inner clamping plate 404, a rotating slot 405 and a tool clamping plate 406. The knife feeding rotating plate 401 is fixedly installed on the top of the central rotating shaft 110, and the tool mounting frames 402 are slidably installed on both sides of the knife feeding rotating plate 401. The outer surface of the tool mounting frame 402 is rotatably installed with the tool outer clamping plate 403, the inner side of the tool outer clamping plate 404 is fixedly connected to the inner side of the tool outer clamping plate 403, and the tool clamping plate 406 is fixedly installed on the inner surface of the tool mounting frame 402. The tool clamping plate 406 and the surface of the tool mounting frame 402 are provided with a rotating slot 405, and the tool inner clamping plate 404 is movably inserted into the inside of the rotating slot 405.

[0037] Through the cooperation of the driving assembly 3 and the knife feeding assembly 4, when the device is in use, the electric push rod 202 can drive the push rod 203 to be pushed out, thereby driving the connecting plate 302 and the driving plate 301 to descend. At this time, the driving plate 301 will drive the tool 5 to synchronously descend to the position of the tool mounting frame 402. At the same time, the knife feeding rotating plate 401 rotates the tool mounting frame 402 to rotate the tool mounting frame 402 to the position of the driving plate 301. At this time, the tool inner clamping plate 404 will first touch the inner surface of the tool outer groove 6, thereby driving the tool outer clamping plate 403 to the tool mounting frame 402 rotates inside, at this time, the tool mounting bracket 402 will rotate from the outside of the driving plate 301, so that the driving plate 301 is stuck in the gap between the tool outer clamping plate 403 and the tool inner clamping plate 404, until the tool outer clamping plate 403 and the tool inner clamping plate 404 clamp the tool 5, and the electric push rod 202 retracts the push rod 203, thereby completing the operation of moving the tool 5 from the tool placement slot 205 to the inside of the tool mounting bracket 402, thereby improving the tool changing speed of the device, and avoiding multiple collisions of the tool 5 during tool changing, and avoiding the wear of the tool 5.

[0038] The tool placement groove 205 is provided with a tool 5 inside, the outer surface of the tool 5 is provided with a tool outer groove 6, and the upper and lower surfaces of the inner wall of the tool outer groove 6 are provided with anti-drop ring grooves 7.

[0039] The trapezoidal clamping blocks 305 are all movably clamped into the interior of the tool outer groove 6, the limiting ring plates 108 are all movably clamped into the interior of the tool outer groove 6, the tool outer clamping plate 403, the tool inner clamping plate 404 and the tool clamping plate 406 are all movably clamped into the interior of the tool outer groove 6, and the connecting buckles 310 are all movably clamped into the interior of the anti-drop ring groove 7.

[0040] A telescopic connecting rod is provided between the knife feeding rotating plate 401 and the knife mounting bracket 402, the bottom end of the driving plate 301 slides into the gap between the outer clamping plate 403 and the inner clamping plate 404 of the knife, the bottom end of the pushing rod 203 is fixedly connected to the surface of the connecting plate 302, and an air hole is provided on the top surface of the driving plate 301, the air hole is through-connected with the inside of the two-way cylinder 307, and an air pipe is provided on the top of the air hole, and the air pipe is connected to the air pump.

[0041] A tool changing warning mechanism for a five-axis CNC machining center includes a tool changing mechanism for a five-axis CNC machining center, and also includes a multi-sensor fusion module and a five-axis CNC machining center machine tool. The multi-sensor fusion module includes a vibration sensor, a temperature sensor and a pressure feedback unit, the vibration sensor is arranged inside a tool placement groove 205, the temperature sensor is embedded in a servo motor 104 and a ladder-shaped clamping block 305, and the pressure feedback unit is arranged inside the five-axis CNC machining center machine tool.

[0042] The vibration sensor is used to monitor the abnormal vibration spectrum during the tool changing process, the temperature sensor is used to detect the risk of overheating, and the pressure feedback unit is used to collect the clamping force data of the tool 5 in real time and compare it with the preset threshold to determine the looseness of the tool.

[0043] When the tool changing and tool changing warning mechanism for a five-axis CNC machining center is used, one of the tool changing rack structures 2 is first identified as the main tool changing module, and the other tool changing rack structure 2 is made the auxiliary tool changing module, and different types of tools 5 are placed in the tool placement slot 205 of each tool changing rack structure 2. When tool changing is required, two modes can be selected:

[0044] Tool replacement mode: the main tool change module first rotates the tool 5 to be replaced to the position of the tool mounting frame 402 close to it, and the auxiliary tool change module rotates the tool 5 of the same type to be replaced to the position of the tool mounting frame 402 close to it, and the driving component 3 moves the tool 5 of the main tool change module to the inside of the tool mounting frame 402, and then the tool feeding turntable 401 drives the tool mounting frame 402 to rotate, so that the tool 5 of the main tool change module is rotated to the inside of the five-axis CNC machining center, so that it can replace the tool 5. At the same time, the tool 5 of the auxiliary tool change module is ready for tool change at any time, avoiding the need to wait for the time to prepare to place and replace the tool 5 when the tool 5 of the main tool change module is damaged, which can speed up the tool change time;

[0045] Tool pre-delivery mode: the main tool change module first rotates the tool 5 that needs to be replaced to the position of the tool mounting frame 402 close to it, and the auxiliary tool change module rotates the tool 5 required for subsequent processing to the position of the tool mounting frame 402 close to it, and moves the tool 5 of the main tool change module to the inside of the tool mounting frame 402 through the driving component 3, and then the tool feeding turntable 401 drives the tool mounting frame 402 to rotate, so that the tool 5 of the main tool change module rotates to the inside of the five-axis CNC machining center to replace the tool 5. When the tool 5 of the main tool change module completes the processing task, it directly replaces the tool 5 of the auxiliary tool change module. At the same time, the main tool change module moves the tool 5 that is required to be used subsequently to the inside of the tool mounting frame 402, thereby realizing the pre-selection and rapid replacement of the tool 5, avoiding the need to re-operate the tool holder structure 2 to select the subsequent tool 5 after each tool 5 processing is completed, thereby reducing the waiting time and speeding up the processing speed;

[0046] When the tool 5 is moved by the driving assembly 3, the electric push rod 202 can be used to drive the push rod 203 to be pushed out, thereby driving the connecting plate 302 and the driving plate 301 to descend. At this time, the driving plate 301 will drive the tool 5 to synchronously descend to the position of the tool mounting bracket 402. At the same time, the tool feeding rotating plate 401 rotates the tool mounting bracket 402 to make the tool mounting bracket 402 rotate to the position of the driving plate 301. At this time, the tool inner clamping plate 404 will first touch the inner surface of the tool outer groove 6, thereby driving the tool outer clamping plate 403 to the tool mounting bracket 402. The tool 5 is moved from the tool placement slot 205 to the tool mounting bracket 402, thereby improving the tool changing speed of the device and avoiding multiple collisions of the tool 5 during tool changing, thereby avoiding the wear of the tool 5.

[0047] When the ladder-shaped clamping block 305 is retracted, the gas inside the two-way cylinder 307 is first extracted from the air hole at the top of the driving plate 301, so that the two-way cylinder 307 drives the internal piston rod 308 to retract. At this time, the piston rod 308 will drive the push plate 309 to retract, so that the connecting buckle 310 is retracted to the inside of the telescopic groove 311, and then the connecting buckle 310 is no longer stuck in the inside of the anti-drop ring groove 7. At this time, the electromagnet 304 can be energized. After the electromagnet 304 is energized, it will be magnetized, so that the ladder-shaped clamping block 305 is pulled back to the inside of the spring groove 303, so that the ladder-shaped clamping block 305 is no longer stuck in the inside of the tool outer groove 6. At this time, the tool 5 no longer blocks the driving plate 301, and the driving plate 301 can be pulled upward by directly retracting the push rod 203 through the electric push rod 202.

[0048] When changing the tool, the status of the tool 5 and the servo motor 104 is monitored through the multi-sensor fusion module. The vibration sensor is used to monitor the abnormal vibration spectrum during the tool change process. The temperature sensor is used to detect the risk of overheating. The pressure feedback unit is used to collect the clamping force data of the tool 5 in real time and compare it with the preset threshold to determine the looseness of the tool. The status of the tool 5 and the servo motor 104 is divided into two levels of warning status:

[0049] Level 1 warning status: When the multi-sensor fusion module detects an abnormal device status, it will alarm and prompt the staff to check the device;

[0050] Secondary warning status: When the multi-sensor fusion module detects an abnormal equipment status, it shuts down and prompts the staff to check the device.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A tool changing mechanism for a five-axis CNC machining center, comprising a support structure (1), characterized in that: A tool changing frame structure (2) is provided on both sides of the top of the support structure (1), a tool feeding assembly (4) is provided at the center of the top of the support structure (1), and a plurality of driving assemblies (3) are provided on the outer surface of the tool changing frame structure (2); The driving assembly (3) comprises a driving plate (301), a spring groove (303), an electromagnet (304), a ladder-shaped clamping block (305) and a compression spring (306); the driving plate (301) is slidably mounted on the outer surface of the tool changer structure (2); a spring groove (303) is provided on a surface of the driving plate (301) close to a side of the tool feeding assembly (4) and close to the bottom end; a ladder-shaped clamping block (305) is slidably mounted inside the spring groove (303); a plurality of compression springs (306) are movably mounted between the ladder-shaped clamping block (305) and the inside of the spring groove (303); an electromagnet (304) is provided inside the driving plate (301) at a position close to the spring groove (303); the electromagnet (304) can pull the ladder-shaped clamping block (305) back to the inside of the spring groove (303) after being energized and magnetized.

2. The tool changing mechanism for a five-axis CNC machining center according to claim 1, characterized in that: The driving assembly (3) further comprises a connecting plate (302), a bidirectional cylinder (307), a piston rod (308), a pushing plate (309) and a connecting buckle (310); the connecting plate (302) is fixedly mounted on one side of the driving plate (301) close to the tool changer structure (2); the top and bottom surfaces of the ladder-shaped clamping block (305) are both provided with inclined surfaces; the inclined surfaces on the upper and lower sides of the ladder-shaped clamping block (305) are both provided with four telescopic grooves (311); and the interiors of the telescopic grooves (311) are both slidably mounted with A connecting buckle (310), a two-way cylinder (307) is fixedly installed on both sides of the ladder-shaped clamping block (305), and output ends are provided on the upper and lower sides of the two-way cylinder (307), and the output ends of the two-way cylinder (307) are fixedly connected to piston rods (308), and the outer ends of the piston rods (308) are fixedly installed with push plates (309), and both ends of the push plates (309) are slidably inserted into the interior of the telescopic groove (311), and the push plates (309) are fixedly connected to the connecting buckle (310).

3. The tool changing mechanism for a five-axis CNC machining center according to claim 2, characterized in that: The support structure (1) comprises a base plate (101), a support frame (102), a limiting frame (103), a servo motor (104), a transmission chain (105), a side support column (106), a side rotating shaft (107), a limiting ring plate (108), a central support column (109) and a central rotating shaft (110); the side support columns (106) are fixedly mounted on both sides of the top of the base plate (101); the side rotating shafts (107) are rotatably mounted inside the side support columns (106); the servo motors (104) are fixedly mounted on both sides of the top of the base plate (101); the output ends of the servo motors (104) are connected to the central rotating shafts (110). A transmission chain (105) is connected, and the bottom ends of the side rotating shafts (107) are connected to the transmission chain (105). A plurality of support frames (102) are fixedly installed on both sides of the base plate (101), and a limiting frame (103) is fixedly installed on the top of each support frame (102). A limiting ring plate (108) is fixedly installed on the inner side of each limiting frame (103). A central support column (109) is fixedly installed at the center of the top of the base plate (101), and a central rotating shaft (110) is rotatably installed inside the central support column (109). A notch is provided on one side of the limiting frame (103) close to the knife feeding assembly (4).

4. The tool changing mechanism for a five-axis CNC machining center according to claim 3, characterized in that: The tool changing rack structure (2) comprises a tool changing disc (201), an electric push rod (202), a pushing rod (203), a lifting groove (204) and a tool placement groove (205); the top end of the side rotating shaft (107) is fixedly mounted with a tool changing disc (201); the outer surface of the tool changing disc (201) is provided with a plurality of tool placement grooves (205); the top surface of the tool changing disc (201) is fixedly mounted with an electric push rod (202) near the tool placement groove (205); the output end of the electric push rod (202) is fixedly connected with a pushing rod (203); the bottom surface of the tool changing disc (201) is provided with a lifting groove (204) near the tool placement groove (205); and the pushing rod (203) is slidably inserted into the inside of the lifting groove (204).

5. The tool changing mechanism for a five-axis CNC machining center according to claim 4, characterized in that: The knife feeding assembly (4) comprises a knife feeding rotating plate (401), a knife mounting frame (402), a knife outer clamping plate (403), a knife inner clamping plate (404), a rotating slot (405) and a knife clamping plate (406); the knife feeding rotating plate (401) is fixedly mounted on the top of the central rotating shaft (110); the knife mounting frames (402) are slidably mounted on both sides of the knife feeding rotating plate (401); the outer knife clamping plate (403) is rotatably mounted on the outer surface of the knife mounting frame (402); the inner side of the outer knife clamping plate (403) is fixedly connected to the inner side of the outer knife clamping plate (404); the inner side surface of the knife mounting frame (402) is fixedly mounted with a knife clamping plate (406); the surfaces of the knife clamping plate (406) and the knife mounting frame (402) are provided with a rotating slot (405); the inner knife clamping plate (404) is movably clamped into the inner side of the rotating slot (405).

6. The tool changing mechanism for a five-axis CNC machining center according to claim 5, characterized in that: The tool placement groove (205) is provided with a tool (5) inside, the outer surface of the tool (5) is provided with a tool outer groove (6), and the upper and lower surfaces of the inner wall of the tool outer groove (6) are provided with anti-drop ring grooves (7).

7. The tool changing mechanism for a five-axis CNC machining center according to claim 5, characterized in that: The trapezoidal clamping blocks (305) are all movably clamped into the interior of the tool outer groove (6), the limiting ring plates (108) are all movably clamped into the interior of the tool outer groove (6), the tool outer clamping plate (403), the tool inner clamping plate (404) and the tool clamping plate (406) are all movably clamped into the interior of the tool outer groove (6), and the connecting buckles (310) are all movably clamped into the interior of the anti-drop ring groove (7).

8. The tool changing mechanism for a five-axis CNC machining center according to claim 5, characterized in that: A telescopic connecting rod is provided between the knife feeding rotating plate (401) and the knife mounting frame (402); the bottom end of the driving plate (301) slides into the gap between the outer knife clamping plate (403) and the inner knife clamping plate (404); the bottom ends of the pushing rods (203) are fixedly connected to the surface of the connecting plate (302); an air hole is provided on the top surface of the driving plate (301); the air hole is connected to the inside of the two-way cylinder (307); an air pipe is provided at the top of the air hole; and the air pipe is connected to an air pump.

9. A tool change warning mechanism for a five-axis CNC machining center, characterized in that: It includes a tool changing mechanism for a five-axis CNC machining center as described in any one of claims 1 to 8, and also includes a multi-sensor fusion module and a five-axis CNC machining center machine tool, characterized in that: the multi-sensor fusion module includes a vibration sensor, a temperature sensor and a pressure feedback unit, the vibration sensor is arranged inside the tool placement groove (205), the temperature sensor is embedded in the servo motor (104) and the ladder-shaped clamping block (305), and the pressure feedback unit is arranged inside the five-axis CNC machining center machine tool.

10. The tool change warning mechanism for a five-axis CNC machining center according to claim 9, characterized in that: The vibration sensor is used to monitor the abnormal vibration spectrum during the tool changing process, the temperature sensor is used to detect the risk of overheating, and the pressure feedback unit is used to collect the clamping force data of the tool (5) in real time and compare it with a preset threshold value to determine the looseness of the tool.

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