Multi-axis numerical control machine tool and cooling liquid circulation processing structure thereof

Abstract

The invention discloses a multi-axis numerical control machine tool and a cooling liquid circulation treatment structure thereof, and relates to the technical field of numerical control machine tools. A square rod is fixed to an output shaft of the driving motor and movably inserted into the working drill bit. The conveying ring sleeves the outer side of the working drill bit; a plurality of through grooves are formed in the working drill bit at equal angles; the mounting rod is inserted into the upper side of the conveying ring through threads, and the inner end of the mounting rod is inserted into an annular groove in the top end of the outer ring wall of the working drill bit; the lifting mechanism is arranged on the outer side of the mounting block and connected with the conveying ring, and a plurality of sprayers are arranged on the outer ring wall of the conveying ring at equal angles through universal bamboo joint pipes; liquid outlets are symmetrically formed in the bottom wall of the machine tool body left and right; the filter plates are located on the lower sides of the liquid outlets, and liquid treatment mechanisms are arranged on the filter plates; a through hole is formed in the vertical partition plate and positioned on the lower side of the filter plate; cooling liquid injection and recovery are optimized, the heat dissipation efficiency is improved, the service life of cooling liquid is prolonged through a built-in filtering system, and maintenance and tool replacement are facilitated through modular design.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled machine tools, and in particular to a multi-axis numerically controlled machine tool and a coolant circulation processing structure thereof. Background Art

[0002] Multi-axis CNC machine tools are widely used in precision machining. The heat generated during machining can easily lead to tool wear and workpiece deformation, making coolant circulation crucial. Traditional cooling systems often rely on external spraying, which is inefficient, prone to splashing, and difficult to accurately cover the cutting area. Furthermore, if metal debris and impurities in the coolant are not effectively filtered, they can clog the pipes or repeatedly contaminate the machining area, affecting the machine tool's lifespan and machining quality. Existing coolant circulation systems are often separated from the machine tool itself, taking up a lot of space and making maintenance difficult. Integrated designs, on the other hand, suffer from issues such as insufficient coolant recovery and incomplete filtration. Summary of the Invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the existing technology and provide a multi-axis CNC machine tool with a reasonable design and easy use and a coolant circulation treatment structure thereof, optimize coolant injection and recovery, improve heat dissipation efficiency, extend the coolant life with a built-in filtration system, and facilitate maintenance and tool changing with a modular design.

[0004] To achieve the above-mentioned object, the present invention adopts the following technical solution: it comprises a machine tool body, a working drill bit and a mounting block, wherein the working drill bit is suspended on the upper side of the interior of the machine tool body, and a mounting block is provided on the upper side of the working drill bit, and the mounting block is connected to the multi-axis drive in the machine tool body; it also comprises: A driving motor is embedded in and fixed in the lower end of the mounting block, a square rod is fixed to the output shaft of the driving motor, and the square rod is movably inserted in the working drill bit; The conveying ring is sleeved on the outside of the working drill bit. The working drill bit is provided with several through slots at equal angles. The through slots are all U-shaped. The opening on one side of the through slot is set through the upper side of the working drill bit, and the opening on the other side of the through slot is set through the cavity inside the conveying ring. The conveying ring is connected to the external coolant through a telescopic tube; There are several mounting rods, which are inserted into the upper side of the conveying ring through threads, and the inner ends of the mounting rods are inserted into the annular groove at the top end of the outer ring wall of the working drill bit; A lifting mechanism is provided on the outside of the mounting block and is connected to a conveying ring. A plurality of nozzles are provided on the outer ring wall of the conveying ring at equal angles through a universal bamboo tube; A liquid storage tank is provided in the lower side of the machine tool body, and liquid outlets are symmetrically provided in the bottom wall of the machine tool body, and the liquid outlets are located on the upper side of the liquid storage tank; Filter plates, there are two filter plates, and they are respectively located on the lower side of the liquid outlet, the filter plates are fixedly connected to the inner wall of the liquid storage tank, and the filter plates are provided with liquid processing mechanisms; There are two vertical partitions, which are symmetrically arranged on both sides of the liquid storage tank. The vertical partitions are located between the liquid outlets on both sides. The vertical partitions are located below the filter plate and have a through hole. Through the above technical solution, the workpiece is placed on the positioning table on the machine tool body, the driving motor drives the square rod to rotate, the square rod drives the working drill bit to rotate, and the lifting mechanism drives the working drill bit to move downward through the conveying ring until the working drill bit contacts the workpiece. At the same time, the mounting block is driven by the multi-axis driver to facilitate processing. During the processing, the external coolant is pumped into the conveying ring and then sprayed on the working drill bit through the universal bamboo tube. At the same time, the coolant enters the through groove on the working drill bit, thereby improving the cooling effect. At the same time, the flowing coolant is processed by the liquid treatment mechanism for easy recycling. When the working drill bit needs to be replaced, the mounting rod is rotated to remove the mounting rod from the working drill bit.

[0005] As a further improvement of the present invention, a plurality of movable wheels are fixed in a matrix on the outer bottom wall of the liquid storage tank, and sliding bars are fixed on the outer walls on both sides of the left and right sides of the liquid storage tank. The sliding bars are slidably arranged in the slide grooves on both sides of the bottom of the machine tool body, and the sliding bars are connected to the machine tool body through a limiting mechanism; Through the above technical solution, the liquid storage tank slides in the machine tool body. After long-term use, the limiting mechanism can be loosened, and the liquid storage tank can be removed from the machine tool body, which is convenient for cleaning.

[0006] As a further improvement of the present invention, the limiting mechanism includes: There are two limit plates, each of which is arranged in the sliding bar. One side of the limit plate is inserted into the groove on the machine tool body. The center of the limit plate is screwed with a limit screw through a thread. The outer end of the limit screw passes through the sliding bar and is screwed into the side wall of the liquid storage tank through a bearing. There are two drive gears, each of which is disposed in the two side walls of the liquid storage tank. The drive gears are respectively sleeved and fixed on adjacent limit screws. The upper side of the drive gear is engaged with a drive rack. The front end of the drive rack passes through the front side wall of the liquid storage tank and is exposed on the front side of the liquid storage tank. A connecting rod is provided on the front side of the liquid storage tank, and both sides of the connecting rod are connected to the driving racks on both sides. A pull rod is provided on the outer side of the connecting rod, and the pull rod is provided in a "U" shape. The support rods on both sides of the pull rod are provided with rectangular grooves that match the connecting rod and the driving rack; Through the above technical solution, when the liquid storage tank needs to be taken out, the connecting rod is moved to one side of the pull rod, the connecting rod drives the driving rack to move, the driving rack drives the driving gear to rotate, the driving gear drives the limit screw to rotate, and the limit screw drives the limit plate to move until the limit plate moves into the sliding bar, thereby facilitating the removal of the liquid storage tank.

[0007] As a further improvement of the present invention, a plurality of interference springs are fixed at equal intervals on the front side wall of the connecting rod, and the other ends of the interference springs are fixed in the support rod on the front side of the pull rod; With the above technical solution, after the liquid storage tank is installed, the connecting rod is loosened, and the connecting rod can be moved to one side of the liquid storage tank under the push of the resistance spring, thereby eliminating the need for manual pushing and facilitating operation.

[0008] As a further improvement of the present invention, a hemispherical groove is provided on the outer wall of the front side of the liquid storage tank, and the hemispherical groove is located on the rear side of the middle end of the connecting rod; Through the above technical solution, when moving the connecting rod, a finger can be inserted into the hemispherical groove, thereby facilitating the movement of the liquid storage tank.

[0009] As a further improvement of the present invention, the lifting mechanism comprises: There are several lifting links, and two of them are grouped together and screwed together through the shaft. The other ends of the lifting links are screwed together on the mounting block and the outer ring wall of the conveying ring through the hinge seat respectively. Drive shafts, there are several drive shafts, and they are screwed into the mounting block at equal angles through bearings. The drive shafts are connected to the shafts on the adjacent lifting links through synchronous wheel transmission assemblies; A lifting motor is embedded in and fixed in the mounting block. A worm is fixed to the output shaft of the lifting motor. Several worm wheels are meshed at equal angles on the outside of the worm. The worm wheels are sleeved and fixed on several drive shafts in a one-to-one correspondence. Through the above technical solution, the lifting motor is started, the lifting motor drives the worm to rotate, the worm drives several worm gears to rotate, the worm gear drives the drive shaft to rotate, the drive shaft drives the corresponding upper lifting link to rotate through the synchronous wheel transmission assembly, the upper lifting link drives the lower lifting link to rotate, thereby driving the lower conveying ring to move until it reaches the appropriate position.

[0010] As a further improvement of the present invention, the liquid processing mechanism comprises: A cleaning scraper is provided, wherein the cleaning scraper contacts the upper side of the filter plate, and a cleaning sleeve is provided on the outer side of the cleaning scraper. The left and right sides of the cleaning sleeve and the cleaning scraper are respectively matched with the side wall of the liquid storage tank and the side wall of the vertical partition. Connecting springs, there are several connecting springs, which are fixed on the top wall of the cleaning scraper at equal distances, and the upper ends of the connecting springs are fixed on the inner top wall of the cleaning sleeve; A reciprocating screw rod is screwed to one side of the upper part of the cleaning sleeve through a thread, and both ends of the reciprocating screw rod are screwed to the front and rear side walls of the liquid storage tank through bearings. A guide rod is movably inserted on the other side of the upper part of the cleaning sleeve, and the guide rod is fixedly connected to the front and rear inner walls of the liquid storage tank; The baffle is against the upper side of the filter plate, the lower side of the filter plate is fixed with a support plate, the support plate is fixed on the inner wall of the liquid storage tank, and the baffle is movably sleeved on the smooth section of the reciprocating screw and the guide rod; There are two return springs, and their ends are respectively fixed to the side wall of the baffle away from the cleaning sleeve and the inner wall of the liquid storage tank. The return springs are sleeved on the reciprocating screw and the guide rod; There are two push rods, which are symmetrically fixed on both sides of the front side wall of the cleaning sleeve, and the push rods are matched with the baffle to be in contact with each other; A cleaning motor is embedded in and fixed to the front side wall of the liquid storage tank, and the output shaft of the cleaning motor is connected to the front end of the reciprocating screw rod; The mounting frame is arranged in a "U" shape, and the support plates on both sides of the mounting frame are fixed to the inner wall of the rear side of the liquid storage tank. The support plate on the middle side of the mounting frame is a hollow structure with an open upper side. The front and rear side walls of the middle side support plate of the mounting frame are both symmetrically provided with filter ports. A pumping pump is fixed to the outer wall of the rear side of the liquid storage tank. The inlet end of the pumping pump is located in the mounting frame, and the outlet end of the pumping pump is connected to the hose on the delivery ring through a multi-way joint. Through the above technical solution, the filter element to be used is installed in the open cavity on the mounting frame, and the cleaning motor is started. The cleaning motor drives the reciprocating screw to rotate, and the reciprocating screw drives the cleaning sleeve to move. During the movement, the cleaning sleeve pushes the cleaning scraper through the connecting spring, so that the cleaning scraper keeps in conflict with the filter plate, and the cleaning scraper moves synchronously with the cleaning sleeve. Impurities on the filter plate are cleaned during the movement. When the push rod conflicts with the baffle, it drives the baffle to move forward, so that the impurities scraped to the front side fall to the front side of the support plate through the front side of the filter plate, which is convenient for impurity cleaning. The filtered coolant is filtered through the filter element. When the coolant in the liquid storage tank is stored to a certain amount, the pumping pump is started, and the pumping pump pumps the coolant into the hose and finally into the conveying ring, thereby achieving the effect of coolant circulation.

[0011] As a further improvement of the present invention, a water level sensor is fixed on the inner wall of one side of the liquid storage tank, and the water level sensor is connected to the pumping pump through a controller; Through the above technical solution, the liquid amount in the liquid storage tank can be easily monitored through the water level sensor without manual observation, saving time and effort.

[0012] As a further improvement of the present invention, a support guide rod is provided inside the connecting spring, the upper end of the support guide rod is fixed to the inner top wall of the cleaning sleeve, and the lower end of the support guide rod is movably inserted into the cleaning scraper; Through the above technical solution, the connecting spring can be supported by the supporting guide rod to avoid deformation of the connecting spring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The conveying ring and U-shaped groove design allow the coolant to evenly cover the working drill bit. Combined with the multi-angle spraying of the universal bamboo tube, the cooling efficiency is significantly improved, the tool wear is reduced, and the service life is extended. 2. The use of square rod drive and threaded mounting rod to fix the working drill bit has a simple and reliable structure, which is convenient for quick disassembly and replacement of the drill bit, improving processing efficiency and reducing maintenance costs; 3. The liquid storage tank is equipped with a built-in multi-stage filtration system, which cooperates with the cleaning scraper and pump to automatically remove metal debris, ensuring the cleanliness of the coolant, realizing recycling and reducing resource waste; 4. The liquid storage tank is equipped with moving wheels and a sliding mechanism, combined with a limit gear drive system, which can be easily pulled out for cleaning; the water level sensor intelligently monitors the liquid volume, reducing manual intervention and improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 This is an exploded view of the structure of the lifting mechanism, conveying ring and mounting block in the present invention.

[0016] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0017] Figure 4 This is an exploded view of the structure of the drive motor, conveying ring, square rod, and mounting rod in the present invention.

[0018] Figure 5 It is a structural schematic diagram of the liquid storage tank in the present invention.

[0019] Figure 6 Schematic diagram of the structure of the liquid treatment structure of the present invention.

[0020] Figure 7 It is a structural explosion diagram of the limiting mechanism in the present invention.

[0021] Figure 8Schematic diagram of the internal structure of the working drill bit in the present invention.

[0022] Description of the accompanying symbols: machine tool body 1, working drill bit 2, through groove 2-1, mounting block 3, drive motor 4, square rod 5, conveying ring 6, mounting rod 7, lifting mechanism 8, lifting connecting rod 8-1, drive shaft 8-2, lifting motor 8-3, worm 8-4, worm gear 8-5, nozzle 9, liquid storage tank 10, hemispherical groove 10-1, filter plate 11, liquid processing mechanism 12, cleaning scraper 12-1, cleaning sleeve plate 12-2, connecting spring 12-3, reciprocating screw 12-4, guide rod 12 -5, baffle 12-6, support plate 12-7, return spring 12-8, push rod 12-9, cleaning motor 12-10, mounting frame 12-11, pumping pump 12-12, vertical partition 13, through-hole 13-1, moving wheel 14, sliding bar 15, limiting mechanism 16, limiting plate 16-1, limiting screw 16-2, driving gear 16-3, driving rack 16-4, connecting rod 16-5, pull rod 16-6, resistance spring 17, water level sensor 18, support guide rod 19. DETAILED DESCRIPTION

[0023] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments described are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention. Example 1

[0024] like Figures 1-8 As shown, this embodiment includes a machine tool body 1, a working drill bit 2 and a mounting block 3. The working drill bit 2 is suspended on the upper side of the machine tool body 1. The mounting block 3 is provided on the upper side of the working drill bit 2. The mounting block 3 is connected to the multi-axis drive in the machine tool body 1. It also includes: A drive motor 4 is embedded in and fixed in the lower end of the mounting block 3. A square rod 5 is fixed to the output shaft of the drive motor 4. The square rod 5 is movably inserted in the working drill bit 2. The conveying ring 6 is sleeved on the outside of the working drill bit 2. The working drill bit 2 is provided with several through grooves 2-1 at equal angles. The through grooves 2-1 are all U-shaped. The opening on one side of the through groove 2-1 is set through the upper side of the working drill bit 2, and the opening on the other side of the through groove 2-1 is set through the cavity inside the conveying ring 6. The conveying ring 6 is connected to the external coolant through a telescopic tube; The mounting rods 7 are multiple and are inserted into the upper side of the conveying ring 6 through threads, and the inner ends of the mounting rods 7 are inserted into the annular groove at the top of the outer ring wall of the working drill bit 2; A lifting mechanism 8 is provided on the outside of the mounting block 3 and is connected to the conveying ring 6. A plurality of nozzles 9 are provided on the outer ring wall of the conveying ring 6 at equal angles through a universal bamboo tube; A liquid storage tank 10 is provided in the lower side of the machine tool body 1, and liquid outlets are opened symmetrically on the bottom wall of the machine tool body 1, and the liquid outlets are located on the upper side of the liquid storage tank 10; Filter plates 11, there are two filter plates 11, and they are respectively located on the lower side of the liquid outlet, the filter plates 11 are welded and fixed to the inner wall of the liquid storage tank 10, and a liquid processing mechanism 12 is provided on the filter plates 11; There are two vertical partitions 13, which are symmetrically arranged on both sides of the liquid storage tank 10. The vertical partitions 13 are located between the liquid outlets on both sides. The vertical partitions 13 are located on the lower side of the filter plate 11 and are provided with a through hole 13-1. Example 2

[0025] See Figure 1 、 Figure 5 、 Figure 7 As shown, based on Example 1, a plurality of movable wheels 14 are fixed in a matrix on the outer bottom wall of the liquid storage tank 10, and sliding bars 15 are fixed on the outer walls on both sides of the left and right sides of the liquid storage tank 10. The sliding bars 15 are slidably arranged in the slide grooves on both sides of the bottom of the machine tool body 1, and the sliding bars 15 are connected to the machine tool body 1 through a limiting mechanism 16; the limiting mechanism 16 includes: There are two limit plates 16-1, each of which is disposed in the sliding bar 15. One side of the limit plate 16-1 is inserted into a groove on the machine tool body 1. A limit screw 16-2 is screwed into the center of the limit plate 16-1 through a thread. The outer end of the limit screw 16-2 passes through the sliding bar 15 and is screwed into the side wall of the liquid storage tank 10 through a bearing. There are two drive gears 16-3, and they are respectively arranged in the two side walls of the liquid storage tank 10. The drive gears 16-3 are respectively sleeved and welded to the adjacent limit screws 16-2. The upper side of the drive gear 16-3 is engaged with a drive rack 16-4. The front end of the drive rack 16-4 passes through the front side wall of the liquid storage tank 10 and is exposed on the front side of the liquid storage tank 10; The connecting rod 16-5 is arranged on the front side of the liquid storage tank 10. The two sides of the connecting rod 16-5 are connected to the driving racks 16-4 on both sides. The outer side of the connecting rod 16-5 is provided with a pull rod 16-6. The pull rod 16-6 is set in a "U" shape. The support rods on both sides of the pull rod 16-6 are provided with rectangular grooves that match the connecting rod 16-5 and the driving rack 16-4; a number of resistance springs 17 are welded and fixed at equal distances on the front side wall of the connecting rod 16-5, and the other end of the resistance spring 17 is welded It is connected to the support rod fixed on the front side of the pull rod 16-6. After the liquid storage tank 10 is installed, the connecting rod 16-5 is loosened, and the connecting rod 16-5 can be moved to one side of the liquid storage tank 10 under the push of the resistance spring 17, so that there is no need for manual push, and the operation is convenient; a hemispherical groove 10-1 is provided on the outer wall of the front side of the liquid storage tank 10, and the hemispherical groove 10-1 is located on the rear side of the middle end of the connecting rod 16-5. When moving the connecting rod 16-5, the finger can be inserted into the hemispherical groove 10-1, thereby facilitating the movement of the liquid storage tank 10. Example 3

[0026] See Figure 1-3 As shown, based on Example 1, the lifting mechanism 8 includes: Lifting connecting rods 8-1, there are several lifting connecting rods 8-1, and two of them are grouped together and screwed together through the shaft. The other ends of the lifting connecting rods 8-1 are screwed together on the mounting block 3 and the outer ring wall of the conveying ring 6 through the hinge seat respectively; Drive shaft 8-2, there are several drive shafts 8-2, and they are screwed into the mounting block 3 at equal angles through bearings. The drive shaft 8-2 is connected to the shaft on the adjacent lifting link 8-1 through a synchronous wheel transmission assembly; The lifting motor 8-3 is embedded in and fixed in the mounting block 3. A worm 8-4 is fixed on the output shaft of the lifting motor 8-3. Several worm wheels 8-5 are meshed at equal angles on the outside of the worm 8-4. The worm wheels 8-5 are sleeved one by one and welded to several drive shafts 8-2. Example 4

[0027] See Figure 5-6 As shown, based on Example 1, the liquid processing mechanism 12 includes: A cleaning scraper 12-1 is in contact with the upper side of the filter plate 11. A cleaning sleeve 12-2 is movably sleeved on the outer side of the cleaning scraper 12-1. The left and right sides of the cleaning sleeve 12-2 and the cleaning scraper 12-1 are respectively in contact with the side wall of the liquid storage tank 10 and the side wall of the vertical partition 13. Connecting spring 12-3, there are several connecting springs 12-3, and they are welded and fixed on the top wall of the cleaning scraper 12-1 at equal distances, and the upper end of the connecting spring 12-3 is welded and fixed on the inner top wall of the cleaning sleeve 12-2; the interior of the connecting spring 12-3 is provided with a supporting guide rod 19, the upper end of the supporting guide rod 19 is welded and fixed on the inner top wall of the cleaning sleeve 12-2, and the lower end of the supporting guide rod 19 is movably inserted in the cleaning scraper 12-1, and the connecting spring 12-3 can be supported by the supporting guide rod 19 to avoid deformation of the connecting spring 12-3; A reciprocating screw rod 12-4 is screwed to one side above the cleaning sleeve 12-2 through a thread, and both ends of the reciprocating screw rod 12-4 are screwed to the front and rear side walls of the liquid storage tank 10 through bearings. A guide rod 12-5 is movably inserted on the other side above the cleaning sleeve 12-2, and the guide rod 12-5 is fixedly connected to the front and rear inner walls of the liquid storage tank 10; Baffle 12-6, the baffle 12-6 abuts against the upper side of the filter plate 11, the lower side of the filter plate 11 is welded and fixed with a support plate 12-7, the support plate 12-7 is welded and fixed to the inner wall of the liquid storage tank 10, and the baffle 12-6 is movably sleeved on the smooth section of the reciprocating screw 12-4 and the guide rod 12-5; The return spring 12-8 is provided in pairs, and both ends of the return spring 12-8 are respectively welded and fixed to a side wall of the baffle 12-6 away from the cleaning sleeve 12-2 and the inner wall of the liquid storage tank 10. The return spring 12-8 is sleeved on the reciprocating screw 12-4 and the guide rod 12-5. Push rods 12-9, there are two push rods 12-9, and they are symmetrically welded and fixed on both sides of the front side wall of the cleaning sleeve 12-2, and the push rods 12-9 are matched with the baffle 12-6 to be in conflict with each other; A cleaning motor 12-10 is embedded in and fixed to the front side wall of the liquid storage tank 10, and the output shaft of the cleaning motor 12-10 is connected to the front end of the reciprocating screw rod 12-4; The mounting frame 12-11 is arranged in a "U" shape, and the support plates on both sides of the mounting frame 12-11 are fixed on the inner wall of the rear side of the liquid storage tank 10. The support plate on the middle side of the mounting frame 12-11 is a hollow structure with an open upper side. The front and rear side walls of the middle side support plate of the mounting frame 12-11 are symmetrically provided with filter ports. A pumping pump 12-12 is fixed on the outer wall of the rear side of the liquid storage tank 10. The inlet end of the pumping pump 12-12 is located in the mounting frame 12-11, and the outlet end of the pumping pump 12-12 is connected to the hose on the conveying ring 6 through a multi-way joint; a water level sensor 18 is fixed on the inner wall of one side of the liquid storage tank 10, and the water level sensor 18 is connected to the pumping pump 12-12 through a controller, so that the amount of liquid in the liquid storage tank 10 can be monitored through the water level sensor 18 without manual observation, saving time and effort.

[0028] When using the present invention, the workpiece is placed on the positioning table on the machine tool body 1, the driving motor 4 drives the square rod 5 to rotate, the square rod 5 drives the working drill bit 2 to rotate, the lifting motor 8-3 is started, the lifting motor 8-3 drives the worm 8-4 to rotate, the worm 8-4 drives several worm gears 8-5 to rotate, the worm gear 8-5 drives the driving shaft 8-2 to rotate, the driving shaft 8-2 drives the corresponding upper lifting link 8-1 to rotate through the synchronous wheel transmission assembly, the upper lifting link 8-1 drives the lower lifting link 8-1 to rotate, thereby driving the lower conveying ring 6 to move until the working drill bit 2 contacts the workpiece, and at the same time the mounting block 3 is driven by the multi-axis driver, thereby facilitating processing; During the processing, the external coolant is pumped into the conveying ring 6, and then sprayed on the working drill bit 2 through the universal bamboo tube. At the same time, the coolant enters the through groove 2-1 on the working drill bit 2, thereby improving the cooling effect. The filter element to be used is installed in the open cavity on the mounting bracket 12-11, and the cleaning motor 12-10 is started at the same time. The cleaning motor 12-10 drives the reciprocating screw rod 12-4 to rotate, and the reciprocating screw rod 12-4 drives the cleaning sleeve 12-2 to move. The cleaning sleeve 12-2 moves During the process, the cleaning scraper 12-1 is pushed by the connecting spring 12-3, so that the cleaning scraper 12-1 keeps in contact with the filter plate 11, and the cleaning scraper 12-1 moves synchronously with the cleaning sleeve 12-2. During the movement, the impurities on the filter plate 11 are cleaned. When the push rod 12-9 conflicts with the baffle 12-6, the baffle 12-6 is driven to move forward, so that the impurities scraped to the front side fall through the front side of the filter plate 11 to the front side of the support plate 12-7, which is convenient for impurity cleaning. The filtered coolant is filtered through the filter element. When the coolant in the liquid storage tank 10 is stored to a certain amount, the pumping pump 12-12 is started, and the pumping pump 12-12 pumps the coolant into the hose and finally enters the conveying ring 6, thereby achieving the effect of coolant circulation. When the working drill bit 2 needs to be replaced, the mounting rod 7 is rotated to move the mounting rod 7 out of the working drill bit 2, which is convenient for replacement. After long-term use, when the liquid storage tank 10 needs to be taken out, the connecting rod 16-5 is moved to the side of the pull rod 16-6, and the connecting rod 16-5 drives the driving rack 16-4 to move, and the driving rack 16-4 drives the driving gear 16-3 to rotate, and the driving gear 16-3 drives the limiting screw 16-2 to rotate, and the limiting screw 16-2 drives the limiting plate 16-1 to move until the limiting plate 16-1 moves into the sliding bar 15, thereby facilitating the removal of the liquid storage tank 10 and the cleaning of the liquid storage tank 10.

[0029] Compared with the prior art, the beneficial effects of this specific embodiment are as follows: 1. The innovative design of the conveying ring 6 and the U-shaped groove 2-1 allows the coolant to evenly cover the cutting area of ​​the working drill bit 2. Combined with the adjustable universal bamboo tube for multi-angle spraying, the cooling efficiency is significantly improved, effectively reducing the tool's operating temperature and extending its service life. 2. The square rod 5 is driven and fixed with the threaded mounting rod 7. The structure is simple, reliable and the connection is stable. It can realize the rapid removal and replacement of the working drill bit 2, greatly improving the processing efficiency and reducing the maintenance time cost. 3. The liquid storage tank 10 is equipped with a multi-stage filtering device, which works in conjunction with the automatic cleaning scraper 12-1 and the pumping pump 12-12 to continuously remove metal debris and impurities in the coolant, ensuring the cleanliness of the coolant and achieving efficient recycling of resources; 4. The bottom of the liquid storage tank 10 is equipped with moving wheels 14 and a precision sliding mechanism. Combined with the gear-driven limit system, the operator can easily pull out the liquid storage tank 10 for thorough cleaning; the intelligent water level sensor 18 monitors the liquid volume in real time, realizes automated management, and significantly improves the convenience of equipment maintenance.

[0030] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-axis CNC machine tool and a coolant circulation processing structure thereof, comprising a machine tool body (1) and a working drill bit (2), wherein the multi-axis driver in the machine tool body (1) is connected to a mounting block (3) on the working drill bit (2); characterized in that: It also comprises: a driving motor (4), wherein the driving motor (4) is fixed in the lower end of the mounting block (3), and a square rod (5) fixed on the output shaft of the driving motor (4) is movably inserted in the working drill bit (2); a conveying ring (6), wherein the conveying ring (6) is sleeved on the outside of the working drill bit (2), and a plurality of through grooves (2-1) arranged at equal angles on the working drill bit (2) are arranged in a "U" shape, and the openings on both sides of the through grooves (2-1) are arranged to penetrate the upper side of the working drill bit (2) and the cavity inside the conveying ring (6), and the conveying ring (6) is connected to the external coolant through a telescopic tube; a mounting rod (7), wherein a plurality of the mounting rods (7) are screwed in the upper side of the conveying ring (6), and the inner ends of the mounting rods (7) are inserted in the annular groove of the outer ring wall of the working drill bit (2); and a lifting mechanism (8), wherein the lifting mechanism (8) The lowering mechanism (8) is arranged on the outside of the mounting block (3), the lifting mechanism (8) is connected to the conveying ring (6), and a plurality of nozzles (9) are provided on the conveying ring (6) at equal angles through a universal bamboo tube; a liquid storage tank (10), the liquid storage tank (10) is arranged inside the lower side of the machine tool body (1), and the liquid outlet of the bottom wall of the machine tool body (1) is located on the upper side of the liquid storage tank (10); a filter plate (11), the two filter plates (11) are located below the liquid outlets on both sides and are fixed to the inner wall of the liquid storage tank (10), and a liquid processing mechanism (12) is provided on the filter plate (11); a vertical partition (13), the two vertical partitions (13) are symmetrically arranged on both sides of the interior of the liquid storage tank (10) and are located between the liquid outlets on both sides, and the vertical partition (13) is provided with a through hole (13-1) at the lower side of the filter plate (11).

2. A multi-axis CNC machine tool and coolant circulation processing structure thereof according to claim 1, characterized in that: A plurality of movable wheels (14) are fixed in a matrix on the outer bottom wall of the liquid storage tank (10), and sliding bars (15) are fixed on the outer walls on both sides of the left and right sides of the liquid storage tank (10). The sliding bars (15) are slidably arranged in the slide grooves on both sides of the bottom of the machine tool body (1), and the sliding bars (15) are connected to the machine tool body (1) through a limiting mechanism (16).

3. The multi-axis CNC machine tool and coolant circulation processing structure thereof according to claim 2, characterized in that: The limiting mechanism (16) comprises: a limiting plate (16-1), two limiting plates (16-1) are provided, and are respectively arranged in the sliding bar (15), one side of the limiting plate (16-1) is inserted into the groove on the machine tool body (1), the center of the limiting plate (16-1) is screwed with a limiting screw (16-2) through a thread, the outer end of the limiting screw (16-2) passes through the sliding bar (15) and is screwed into the side wall of the liquid storage tank (10) through a bearing; a driving gear (16-3), two driving gears (16-3) are provided, and are respectively provided in the two side walls of the liquid storage tank (10), the driving gears (16-3) are respectively sleeved and fixed on the adjacent limiting screws. On the rod (16-2), the upper side of the driving gear (16-3) is meshed with a driving rack (16-4), and the front end of the driving rack (16-4) passes through the front side wall of the liquid storage tank (10) and is exposed on the front side of the liquid storage tank (10); a connecting rod (16-5), the connecting rod (16-5) is set on the front side of the liquid storage tank (10), and both sides of the connecting rod (16-5) are connected to the driving racks (16-4) on both sides. A pull rod (16-6) is provided on the outer side of the connecting rod (16-5), and the pull rod (16-6) is set in a "U" shape. The support rods on both sides of the pull rod (16-6) are provided with rectangular grooves that match the connecting rod (16-5) and the driving rack (16-4).

4. The multi-axis CNC machine tool and coolant circulation processing structure thereof according to claim 3, characterized in that: A plurality of resisting springs (17) are fixed at equal intervals on the front side wall of the connecting rod (16-5), and the other end of the resisting spring (17) is fixed in the support rod on the front side of the pull rod (16-6).

5. The multi-axis CNC machine tool and coolant circulation processing structure thereof according to claim 1, characterized in that: A hemispherical groove (10-1) is provided on the outer wall of the front side of the liquid storage tank (10), and the hemispherical groove (10-1) is located at the rear side of the middle end of the connecting rod (16-5).

6. The multi-axis CNC machine tool and the coolant circulation processing structure thereof according to claim 1, characterized in that: The lifting mechanism (8) comprises: a lifting connecting rod (8-1), wherein the lifting connecting rods (8-1) are multiple, and two of them form a group and are screwed together through a shaft, and the other end of the lifting connecting rod (8-1) is screwed to the outer ring wall of the mounting block (3) and the conveying ring (6) through a hinge seat; a driving shaft (8-2), wherein the driving shaft (8-2) is multiple, and they are screwed into the mounting block (3) at equal angles through bearings, and the driving shaft (8-2) is connected to the shaft on the adjacent lifting connecting rod (8-1) through a synchronous wheel transmission assembly; a lifting motor (8-3), wherein the lifting motor (8-3) is embedded in and fixed in the mounting block (3), and a worm (8-4) is fixed on the output shaft of the lifting motor (8-3), and a plurality of worm wheels (8-5) are meshed at equal angles on the outer side of the worm (8-4), and the worm wheels (8-5) are sleeved and fixed on the plurality of driving shafts (8-2) in a one-to-one correspondence.

7. The multi-axis CNC machine tool and the coolant circulation processing structure thereof according to claim 1, characterized in that: The liquid processing mechanism (12) comprises: a cleaning scraper (12-1), the cleaning scraper (12-1) is in contact with the upper side of the filter plate (11), the outer movable sleeve of the cleaning scraper (12-1) is provided with a cleaning sleeve (12-2), the left and right sides of the cleaning sleeve (12-2) and the cleaning scraper (12-1) are respectively matched with the side wall of the liquid storage tank (10) and the side wall of the vertical partition (13) to be in contact with each other; a connecting spring (12-3), the connecting spring (12-3) is in a plurality of numbers and is fixed at equal distances on the top wall of the cleaning scraper (12-1), and the upper end of the connecting spring (12-3) is fixed on the inner top wall of the cleaning sleeve (12-2); a reciprocating screw (12-4), the The reciprocating screw rod (12-4) is screwed to one side above the cleaning sleeve (12-2) through a thread, and the two ends of the reciprocating screw rod (12-4) are screwed to the front and rear side walls of the liquid storage tank (10) through bearings. A guide rod (12-5) is movably inserted on the other side above the cleaning sleeve (12-2), and the guide rod (12-5) is fixedly connected to the front and rear inner walls of the liquid storage tank (10); a baffle (12-6), wherein the baffle (12-6) contacts the upper side of the filter plate (11), and a support plate (12-7) is fixed to the lower side of the filter plate (11), and the support plate (12-7) is fixed to the inner wall of the liquid storage tank (10). The baffle (12-6) is movably sleeved on the smooth section of the reciprocating screw rod (12-4) and the guide rod ( 12-5); a return spring (12-8), the return spring (12-8) is two, and the two ends of the return spring (12-8) are respectively fixed on a side wall of the baffle (12-6) away from the cleaning sleeve (12-2) and the inner wall of the liquid storage tank (10), and the return spring (12-8) is sleeved on the reciprocating screw (12-4) and the guide rod (12-5); a push rod (12-9), the push rod (12-9) is two, and is symmetrically fixed on both sides of the front side wall of the cleaning sleeve (12-2), and the push rod (12-9) is matched with the baffle (12-6) in a conflicting arrangement; a cleaning motor (12-10), the cleaning motor (12-10) is embedded in and fixed in the front side wall of the liquid storage tank (10), and the cleaning motor (12-10) is fixed in the front side wall of the liquid storage tank (10). The output shaft of the processing motor (12-10) is connected to the front end of the reciprocating screw rod (12-4); the mounting frame (12-11) is arranged in a "U" shape, the support plates on both sides of the mounting frame (12-11) are fixed on the inner wall of the rear side of the liquid storage tank (10), the support plate on the middle side of the mounting frame (12-11) is a hollow structure with an open upper side, and filter ports are symmetrically arranged on the front and rear side walls of the middle side support plate of the mounting frame (12-11), and a pumping pump (12-12) is fixed on the outer wall of the rear side of the liquid storage tank (10), the inlet end of the pumping pump (12-12) is located in the mounting frame (12-11), and the outlet end of the pumping pump (12-12) is connected to the hose on the conveying ring (6) through a multi-way joint.

8. The multi-axis CNC machine tool and coolant circulation processing structure thereof according to claim 7, characterized in that: A water level sensor (18) is fixed on the inner wall of one side of the liquid storage tank (10), and the water level sensor (18) is connected to the pumping pump (12-12) through a controller.

9. The multi-axis CNC machine tool and the coolant circulation processing structure thereof according to claim 7, characterized in that: A support guide rod (19) is provided inside each of the connecting springs (12-3). The upper end of the support guide rod (19) is fixed to the inner top wall of the cleaning sleeve (12-2), and the lower end of the support guide rod (19) is movably inserted into the cleaning scraper (12-1).

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