A five-axis linkage numerical control milling machining center for cylinder cover precision machining

Abstract

The present application relates to the technical field of numerical control processing equipment, in particular to a five-axis linkage numerical control milling machining center for precise machining of cylinder covers; the present application can realize cleaning of the machining table through the rotary swing head assembly; based on the connection of the connecting pipe and the cooling liquid pipeline, the opening and closing operation of the manual valve drives the cooling liquid of the numerical control milling machining center to be conveyed to the liquid outlet nozzle through the connecting pipe and the liquid outlet pipeline and complete the spraying operation, then the controller is opened and the parameters are preset, the controller regulates the on-off state and the current size of the electrically controlled magnet, so that the magnetism is generated when the electrically controlled magnet is powered on, the adsorption force is formed on the strong magnetic limiting block, then the liquid outlet nozzle is driven to rotate along the outer wall of the mounting block through the mounting ring plate, the limiting tension spring is stretched, the dynamic adjustment of the cooling liquid spraying position is realized, and after the electrically controlled magnet is de-energized and loses magnetism, the limiting tension spring resets the strong magnetic limiting block by the elastic tension, so that the dynamic adjustment of the cooling liquid spraying position is facilitated.

Description

Technical Field

[0001] This invention relates to the field of CNC machining equipment technology, specifically a five-axis linkage CNC milling machining center for precision machining of cylinder heads. Background Technology

[0002] A five-axis CNC milling machining center is an advanced CNC machining equipment that integrates high precision, high efficiency, and complex machining capabilities. It uses a CNC system as its core control center, precisely commanded by a computer program to drive the machine tool's five motion axes (typically including three linear axes X, Y, and Z, and two rotary axes, such as the A-axis rotating around the X-axis, the B-axis rotating around the Y-axis, or the C-axis rotating around the Z-axis) to achieve multi-dimensional, synchronous, and precise movements. Relying on this unique linkage control capability, the machine tool can perform milling machining on workpieces at any angle and on any curved surface in space. Current CNC machining processes generate a large amount of waste chips. These chips are prone to getting stuck and accumulating in the positioning slots and clamping grooves of the worktable during their natural fall. Chip removal requires manual removal of each chip after the machine is stopped, which is time-consuming and reduces the machine's machining efficiency. At the same time, conventional cooling spray devices only support manual adjustment of the spray angle when the machine is stopped, and cannot dynamically adjust the spray angle in real time according to the cutting point. The spraying effect is limited by human experience, and insufficient cooling is likely to occur in the cutting area, which will lead to accelerated tool wear.

[0003] Therefore, a five-axis CNC milling machining center for precision machining of cylinder heads is needed to improve the above problems. Summary of the Invention

[0004] To address the problem that metal chips generated during milling in a five-axis CNC milling machining center for precision machining of cylinder heads tend to become embedded in the fixed groove of the worktable, resulting in time-consuming and laborious cleaning, and that residual chips can interfere with workpiece positioning, this invention provides a five-axis CNC milling machining center for precision machining of cylinder heads to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A five-axis linkage CNC milling machining center for precision machining of cylinder heads includes a machine base, a machine bed housing fixedly mounted on the base surface of the machine base, a controller fixedly mounted on the outer wall of the machine bed housing, a linear feed axis fixedly mounted on the inner wall of the machine bed housing, a spindle driver fixedly mounted on the moving end of the linear feed axis, and a cutting tool mounted on the driving end of the spindle driver. A cooling assembly for dynamically adjusting and cooling the tool is provided on one side of the tool and on the outer wall of the spindle drive. A rotary linkage shaft is fixedly installed on the inner wall of the machine bed housing. A rotary swing head assembly for cleaning the machining table is provided on the outer wall of the rotary linkage shaft.

[0006] As a preferred embodiment of the present invention, the cooling assembly includes a mounting plate, which is fixedly mounted on the outer wall of the spindle drive. A liquid outlet pipe is embedded in the outer wall of the mounting plate. One end of the liquid outlet pipe is fixedly mounted with an inlet pipe via a manual valve. Mounting blocks are symmetrically mounted on the bottom outer wall of the mounting plate, wherein one end of the mounting block is connected to the liquid outlet pipe.

[0007] As a preferred embodiment of the present invention, the mounting blocks are provided in multiple sets and are respectively located on the outer wall of the liquid outlet pipe. A liquid outlet nozzle is rotatably connected to the outer wall of the mounting block. The connection between the liquid outlet nozzle and the mounting block is a communicating structure. An mounting ring plate is fixedly installed on the outer wall of the liquid outlet nozzle.

[0008] As a preferred embodiment of the present invention, a strong magnetic limiting block is fixedly installed on the outer wall of one side of the mounting ring plate, a limiting tension spring is fixedly installed on the outer wall of the other side of the mounting ring plate, a limiting base plate is fixedly installed on the bottom outer wall of the mounting plate, a limiting tension spring is fixedly connected to the outer wall of the limiting base plate, and an electrically controlled magnet is embedded in the bottom outer wall of the mounting plate directly above the strong magnetic limiting block.

[0009] As a preferred embodiment of the present invention, the rotary oscillating head assembly includes a rotary motor and a rotary base. The rotary motor is embedded in the outer wall of the rotary linkage shaft. A clamping platform is fixedly installed at one end of the rotary motor. Clamping grooves are sequentially formed on the outer wall of the clamping platform from left to right. The rotary base is fixedly installed in the middle of the inner cavity of the clamping groove. The clamping platform is rotatably connected to the outer wall of the rotary linkage shaft. An electrical slip ring is installed on the outer wall of the rotary motor's rotating shaft.

[0010] As a preferred embodiment of the present invention, a limiting plate is embedded in the opposite outer wall of the clamping platform, a chip guide groove is provided on the inner wall of the clamping platform, the connection between the chip guide groove and the clamping groove is a connected structure, a scraper is slidably connected to the inner wall of the chip guide groove, and one end of the scraper is slidably connected to the inner wall of the clamping groove.

[0011] As a preferred embodiment of the present invention, a threaded rotating rod is rotatably connected to the outer wall of the limiting plate. Two sets of threaded rotating rods are provided and are respectively located on the outer wall of the limiting plate. One end of the threaded rotating rod passes through the limiting plate and extends to the outer wall of the limiting plate where a servo motor is fixedly installed. The servo motor is fixedly installed on the outer wall of the limiting plate.

[0012] As a preferred embodiment of the present invention, the other end of the threaded rotating rod passes through the limiting plate and extends to the outer wall of the rotating base, where a magnetic coupling block is fixedly installed. The magnetic coupling block is rotatably connected to the outer wall of the rotating base. Two sets of magnetic coupling blocks are provided and are respectively located on the outer wall of the rotating base. The connection between the two sets of magnetic coupling blocks is a magnetic connection.

[0013] As a preferred embodiment of the present invention, a chain-type tool magazine is fixedly provided on the inner wall of the machine bed housing, a protective door cover is fixedly installed at the port of the machine bed housing, and the controller is electrically connected to a linear feed axis, a spindle driver, a rotary linkage axis, a rotary motor, an electric magnet, and a servo motor via wires.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention enables dynamic cooling adjustment by incorporating a cooling component in a five-axis CNC milling machining center used for precision machining of cylinder heads. Based on a connection between the inlet pipe and the coolant pipeline, the coolant from the CNC milling machining center is driven through the inlet and outlet pipes to the outlet nozzle via the opening and closing of a manual valve, completing the spraying operation. Subsequently, the controller is activated and preset parameters are set. The controller regulates the on / off state and current magnitude of the electromagnet, causing it to generate magnetism when energized, creating an attraction force on the strong magnetic limit block. This force, via the mounting ring plate, drives the outlet nozzle to rotate along the outer wall of the mounting block, simultaneously stretching the limit spring to achieve dynamic adjustment of the coolant spray position. When the electromagnet is de-energized, the limit spring uses its elastic force to pull the strong magnetic limit block back to its original position, facilitating dynamic adjustment of the coolant spray position. This solves the problems of conventional cooling spray devices, which only support manual adjustment of the spray angle when the machine is stopped, cannot dynamically adjust in real time according to the cutting point, and whose spraying effect is limited by human experience, easily leading to insufficient cooling in the cutting area and increased tool wear.

[0015] This invention enables the cleaning of the machining table by setting a rotary oscillating head assembly in a five-axis linkage CNC milling machining center used for precision machining of cylinder heads. A servo motor drives a threaded rotating rod to rotate on the outer wall of a limiting plate, while one end of the threaded rotating rod drives a magnetic coupling block to rotate. Since the two sets of magnetic coupling blocks are connected magnetically, they achieve magnetic coupling transmission. Simultaneously, one end of the threaded rotating rod drives a scraper to reciprocate laterally via a threaded connection, causing the scraper to reciprocate on the inner wall of the chip guide groove and the inner wall of the clamping groove. This scraper removes the waste chips inside the clamping groove, causing them to fall into the chip guide groove and slide to both sides for accumulation, facilitating subsequent cleaning by the operator. This solves the problems of milling waste chips easily embedding in the fixed groove of the worktable, the time-consuming and laborious cleaning after accumulation, and the interference of residual chips with workpiece positioning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal cavity of the equipment bed shell structure of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the cooling component structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 This is a schematic diagram of the clamping platform structure of the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point C.

[0017] In the diagram: 1. Equipment base; 2. Equipment bed housing; 3. Controller; 4. Linear feed axis; 5. Spindle driver; 6. Cutting tool; 7. Cooling assembly; 701. Mounting plate; 702. Liquid outlet pipe; 703. Manual valve; 704. Inlet pipe; 705. Mounting block; 706. Liquid outlet nozzle; 707. Mounting ring plate; 708. Strong magnetic limit block; 709. Limiting tension spring; 710. Limiting... Base plate; 711, electrically controlled magnet; 8, rotary linkage shaft; 9, rotary swing head assembly; 901, rotary motor; 902, rotating base; 903, clamping platform; 904, clamping groove; 905, electric slip ring; 906, limit plate; 907, chip guide groove; 908, scraper; 909, threaded rotating rod; 910, servo motor; 911, magnetic coupling block; 10, chain conveyor tool magazine; 11, protective door cover. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example: Please refer to Figure 1-8The five-axis linkage CNC milling machining center for precision machining of cylinder heads shown includes a machine base 1, a machine bed housing 2 fixedly mounted on the base surface of the machine base 1, a controller 3 fixedly mounted on the outer wall of the machine bed housing 2, a linear feed axis 4 fixedly mounted on the inner wall of the machine bed housing 2, a spindle driver 5 fixedly mounted on the moving end of the linear feed axis 4, and a cutting tool 6 for cutting at the driving end of the spindle driver 5. A cooling assembly 7 for dynamically adjusting and cooling the tool 6 is provided on one side of the tool 6 and on the outer wall of the spindle drive 5. A rotary linkage shaft 8 is fixedly installed on the inner wall of the machine bed housing 2. A rotary swing head assembly 9 for cleaning the machining table is provided on the outer wall of the rotary linkage shaft 8.

[0020] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The cooling assembly 7 includes a mounting plate 701, which is fixedly mounted on the outer wall of the spindle drive 5. A liquid outlet pipe 702 is embedded in the outer wall of the mounting plate 701. One end of the liquid outlet pipe 702 is connected to an inlet pipe 704 via a manual valve 703. Mounting blocks 705 are symmetrically mounted on the bottom outer wall of the mounting plate 701, with one end of each mounting block 705 connected to the liquid outlet pipe 702. Multiple sets of mounting blocks 705 are provided and located on the outer wall of the liquid outlet pipe 702. A liquid outlet nozzle 706 is rotatably connected to the outer wall of each mounting block 705. The connection between the liquid nozzle 706 and the mounting block 705 is a continuous structure. A mounting ring plate 707 is fixedly installed on the outer wall of the liquid nozzle 706. A strong magnetic limit block 708 is fixedly installed on one side of the outer wall of the mounting ring plate 707. A limit spring 709 is fixedly installed on the other side of the outer wall of the mounting ring plate 707. A limit base plate 710 is fixedly installed on the bottom outer wall of the mounting plate 701. A limit spring 709 is fixedly connected to the outer wall of the limit base plate 710. An electrically controlled magnet 711 is embedded in the strong magnetic limit block 708 and located on the bottom outer wall of the mounting plate 701.

[0021] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8The rotary oscillating head assembly 9 includes a rotary motor 901 and a rotary base 902. The rotary motor 901 is embedded in the outer wall of the rotary linkage shaft 8. A clamping platform 903 is fixedly installed at one end of the rotary motor 901. A clamping groove 904 is opened sequentially from left to right on the outer wall of the clamping platform 903. The rotary base 902 is fixedly installed in the middle of the inner cavity of the clamping groove 904. The clamping platform 903 is rotatably connected to the outer wall of the rotary linkage shaft 8. An electric slip ring 905 is installed on the outer wall of the rotary shaft of the rotary motor 901. A limit plate 906 is embedded in the opposite outer wall of the clamping platform 903. A chip guide groove 907 is opened on the inner wall of the clamping platform 903. The connection between the chip guide groove 907 and the clamping groove 904 is a continuous structure. A scraper 908 is slidably connected to the inner wall of the chip guide groove 907, and one end of the scraper 908 is slidably connected to the inner wall of the clamping groove 904. In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 A threaded rotating rod 909 is rotatably connected to the outer wall of the limiting plate 906. Two sets of threaded rotating rods 909 are provided and are located on the outer wall of the limiting plate 906 respectively. One end of the threaded rotating rod 909 passes through the limiting plate 906 and extends to the outer wall of the limiting plate 906 where a servo motor 910 is fixedly installed. The servo motor 910 is fixedly installed on the outer wall of the limiting plate 906. The other end of the threaded rotating rod 909 passes through the limiting plate 906 and extends to the outer wall of the rotating base 902 where a magnetic coupling block 911 is fixedly installed. The magnetic coupling block 911 is rotatably connected to the outer wall of the rotating base 902. Two sets of magnetic coupling blocks 911 are provided and are located on the outer wall of the rotating base 902 respectively. The connection between the two sets of magnetic coupling blocks 911 is a magnetic connection.

[0022] Based on the above structural features and connection relationships, the controller 3 controls the linear feed axis 4, the spindle driver 5, the rotary linkage axis 8, and the rotary motor 901 to perform five-axis cutting on the cylinder head. At the same time, the controller 3 controls the servo motor 910 to run, which in turn causes the drive shaft of the servo motor 910 to drive the threaded rod 909 to rotate on the outer wall of the limit plate 906. Meanwhile, one end of the threaded rod 909 drives the magnetic coupling block 911 to rotate. Since the connection between the two sets of magnetic coupling blocks 911 is magnetic, the two sets of magnetic coupling blocks 911 are magnetically coupled and driven. The machine bed housing 2 is equipped with a chain conveyor tool magazine 10 fixedly installed on its inner wall. A protective door cover 11 is fixedly installed at the port of the machine bed housing 2. The controller 3 is electrically connected to the linear feed axis 4, spindle driver 5, rotary linkage axis 8, rotary motor 901, electric magnet 711 and servo motor 910 through wires, so that the device is powered on. In turn, the controller 3 controls the linear feed axis 4, spindle driver 5, rotary linkage axis 8, rotary motor 901, electric magnet 711 and servo motor 910 to operate.

[0023] This solution is used in a five-axis linkage CNC milling machining center for precision machining of cylinder heads. During operation, by activating the switch of controller 3 and presetting parameters, the cylinder head to be machined is clamped and fixed to the outer wall of the clamping platform 903. Then, controller 3 controls the linear feed axis 4, spindle driver 5, rotary linkage axis 8, and rotary motor 901 to perform five-axis cutting machining on the cylinder head. Simultaneously, controller 3 controls the servo motor 910 to operate, which in turn causes the drive shaft of the servo motor 910 to drive the threaded rod 909 to rotate on the outer wall of the limit plate 906. At the same time, one end of the threaded rod 909 drives the magnetic coupling block 911 to rotate. Due to the interaction between the two sets of magnetic coupling blocks 911... The connection between the two sets of magnetic coupling blocks 911 is magnetically coupled, and one end of the threaded rotating rod 909 drives the scraper 908 to reciprocate laterally through the threaded connection. This causes the scraper 908 to reciprocate on the inner wall of the chip guide groove 907 and on the inner wall of the clamping groove 904. This scraper 908 scrapes away the waste chips inside the clamping groove 904, causing the waste chips to fall into the chip guide groove 907 and slide to both sides for accumulation. This makes it easier for the operator to clean up the waste chips later. This solves the problem that the metal waste chips generated by milling are easily embedded in the fixed groove of the worktable, and the time-consuming and laborious cleaning after accumulation, and the residual chips will interfere with the positioning of the workpiece. By connecting one end of the inlet pipe 704 to the coolant pipeline, and then opening the manual valve 703, the coolant from the CNC milling machining center flows through the inlet pipe 704 and the outlet pipe 702 into the outlet nozzle 706 for spraying out coolant. Then, the controller 3 is switched on with preset parameters, causing the controller 3 to energize the electromagnet 711, generating magnetism. The electromagnet 711 generates magnetic attraction on the strong magnetic limit block 708, causing the strong magnetic limit block 708 to move the outlet nozzle 706 via the mounting ring plate 707. This causes the outlet nozzle 706 to rotate on the outer wall of the mounting block 705. Simultaneously, the outlet nozzle 706 is stretched by the tension spring 709 of the mounting ring plate 707. The controller 3 continuously adjusts the current to control the magnetic strength of the electromagnet 711, allowing the electromagnet 711 to dynamically attract and adjust the position of the strong magnetic limit block 708, and vice versa. When the electric magnet 711 is de-energized, it loses its magnetism, which causes the limit spring 709 to pull the strong magnetic limit block 708 to elastically reset. This facilitates dynamic adjustment of the coolant spray position, thus solving the problem that conventional cooling spray devices only support manual adjustment of the spray angle when the machine is stopped, cannot dynamically adjust in real time according to the cutting point, the spraying effect is limited by human experience, and the cutting area is prone to insufficient cooling, which leads to increased tool wear.

[0024] The linear feed axis 4, spindle driver 5, rotary linkage axis 8, rotary motor 901, electrically controlled magnet 711, servo motor 910, and controller 3 used in this invention are all existing known electrical devices, and all can be directly purchased and used on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the linear feed axis 4, spindle driver 5, rotary linkage axis 8, rotary motor 901, electrically controlled magnet 711, servo motor 910, and controller 3 will not be described in detail here.

[0025] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A five-axis linkage CNC milling machining center for precision machining of cylinder heads, comprising a machine base (1), characterized in that: The equipment bed housing (2) is fixedly installed on the base surface of the equipment base (1). A controller (3) is fixedly installed on the outer wall of the equipment bed housing (2). A linear feed spindle (4) is fixedly installed on the inner wall of the equipment bed housing (2). A spindle driver (5) is fixedly installed at the moving end of the linear feed spindle (4). A cutting tool (6) is provided at the driving end of the spindle driver (5). A cooling assembly (7) for dynamically adjusting and cooling the tool (6) is provided on one side of the tool (6) and on the outer wall of the spindle drive (5). A rotary linkage shaft (8) is fixedly installed on the inner wall of the machine bed housing (2). A rotary swing head assembly (9) for cleaning the machining table is provided on the outer wall of the rotary linkage shaft (8).

2. The five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 1, characterized in that: The cooling assembly (7) includes a mounting plate (701), which is fixedly mounted on the outer wall of the spindle drive (5). A liquid outlet pipe (702) is embedded in the outer wall of the mounting plate (701). One end of the liquid outlet pipe (702) is fixedly mounted with an inlet pipe (704) via a manual valve (703). Mounting blocks (705) are symmetrically mounted on the bottom outer wall of the mounting plate (701), and one end of the mounting block (705) is connected to the liquid outlet pipe (702).

3. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 2, characterized in that: The mounting block (705) is provided in multiple sets and is located on the outer wall of the liquid outlet pipe (702). A liquid outlet nozzle (706) is rotatably connected to the outer wall of the mounting block (705). The connection between the liquid outlet nozzle (706) and the mounting block (705) is a connected structure. An mounting ring plate (707) is fixedly installed on the outer wall of the liquid outlet nozzle (706).

4. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 3, characterized in that: A strong magnetic limiting block (708) is fixedly installed on the outer wall of one side of the mounting ring plate (707), a limiting tension spring (709) is fixedly installed on the outer wall of the other side of the mounting ring plate (707), a limiting base plate (710) is fixedly installed on the bottom outer wall of the mounting plate (701), a limiting tension spring (709) is fixedly connected to the outer wall of the limiting base plate (710), and an electrically controlled magnet (711) is embedded in the bottom outer wall of the mounting plate (701) directly above the strong magnetic limiting block (708).

5. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 4, characterized in that: The rotary oscillating head assembly (9) includes a rotary motor (901) and a rotary base (902). The rotary motor (901) is embedded in the outer wall of the rotary linkage shaft (8). A clamping platform (903) is fixedly installed at one end of the rotary motor (901). A clamping groove (904) is opened sequentially from left to right on the outer wall of the clamping platform (903). The rotary base (902) is fixedly installed in the middle of the inner cavity of the clamping groove (904). The clamping platform (903) is rotatably connected to the outer wall of the rotary linkage shaft (8). An electric slip ring (905) is installed on the outer wall of the rotating shaft of the rotary motor (901).

6. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 5, characterized in that: A limiting plate (906) is embedded in the opposite outer wall of the clamping platform (903). A chip guide groove (907) is provided on the inner wall of the clamping platform (903). The connection between the chip guide groove (907) and the clamping groove (904) is a connected structure. A scraper (908) is slidably connected to the inner wall of the chip guide groove (907), and one end of the scraper (908) is slidably connected to the inner wall of the clamping groove (904).

7. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 6, characterized in that: A threaded rotating rod (909) is rotatably connected to the outer wall of the limiting plate (906). Two sets of threaded rotating rods (909) are provided and are respectively located on the outer wall of the limiting plate (906). One end of the threaded rotating rod (909) passes through the limiting plate (906) and extends to the outer wall of the limiting plate (906) where a servo motor (910) is fixedly installed. The servo motor (910) is fixedly installed on the outer wall of the limiting plate (906).

8. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 7, characterized in that: The other end of the threaded rotating rod (909) passes through the limiting plate (906) and extends to the outer wall of the rotating base (902), where a magnetic coupling block (911) is fixedly installed. The magnetic coupling block (911) is rotatably connected to the outer wall of the rotating base (902). There are two sets of magnetic coupling blocks (911) located on the outer wall of the rotating base (902), and the connection between the two sets of magnetic coupling blocks (911) is a magnetic connection.

9. A five-axis linkage CNC milling machining center for precision machining of cylinder heads according to claim 8, characterized in that: The inner wall of the machine bed housing (2) is fixedly provided with a chain conveyor tool magazine (10), and a protective door cover (11) is fixedly installed at the port of the machine bed housing (2). The controller (3) is connected to the linear feed axis (4), the spindle driver (5), the rotary linkage axis (8), the rotary motor (901), the electric magnet (711), and the servo motor (910) through wires, and the connection method is electrical connection.

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