Machine tool heavy-duty tool storage device based on zero positioning system and quick change method

Abstract

The application belongs to the field of turning-milling combined machining of numerical control machine tools, and discloses a machine tool heavy tool storage device based on a zero-point positioning system and a quick change method. The machine tool heavy tool storage device comprises a station one, a station two and a station three. The application firstly configures the machine tool heavy tool storage device based on the zero-point positioning system in the turning-milling combined machine tool, and designs a specific quick change method in combination with a heavy boring tool bar assembly, a boring tool bar fixing assembly, a power seat assembly, a protective cover assembly and a milling spindle assembly. The zero-point positioning system has large clamping force, high repeat positioning accuracy and is easy to operate, and can realize stable and reliable automatic storage and replacement of the assemblies, solves the problem that the heavy tool and the auxiliary device cannot be stored in the tool magazine, improves the machining efficiency of part production and manufacturing, and provides a new method for the storage and replacement of the turning-milling combined machine tool.

Description

Technical Field

[0001] This invention belongs to the field of CNC machine tool milling and turning composite machining, and relates to a heavy-duty tool storage device and quick-change method for machine tools based on a zero-point positioning system. Background Technology

[0002] Mill-turn machining is an advanced manufacturing technology that combines turning and milling operations on a single machine tool, effectively improving the machining accuracy and efficiency of complex parts. Currently, mill-turn machining is developing rapidly in the machining field and is one of the important directions for future development, with wide applications in aerospace, precision instruments, and other fields. Horizontal mill-turn machining centers, as one of the highest-end machine tools in the industry, have huge market demand. These machine tools play an irreplaceable role in improving the machining accuracy and efficiency of key parts in industries such as energy, aerospace, aviation, shipbuilding, and military. The diversified market demands have spurred technological innovation in machine tools. The automatic tool changer system of the horizontal milling and turning machining center consists of a three-layer disc tool magazine and a tool changing robot. However, the tool length and maximum tool diameter of the disc tool magazine are limited. For some deep hole operations, heavy-duty boring bar and corresponding fixing components are required. For specific operations, a variable diameter turning function is required. The variable diameter turning function requires a corresponding power seat component. In addition, a protective cover component is installed under the milling spindle assembly. None of these components can be loaded into the disc tool magazine.

[0003] To address this, a heavy-duty tool storage device and quick-change method for machine tools based on a zero-point positioning system are proposed, which can realize the storage and automatic exchange of four components: heavy-duty boring bar assembly, boring bar fixing assembly, power seat assembly, and protective cover assembly. Summary of the Invention

[0004] To address the aforementioned problems in existing machining requirements, this invention provides a heavy-duty machine tool storage device and quick-change method based on a zero-point positioning system. The device consists of three stations, whose extension and retraction are controlled by three hydraulic cylinders. Each station is equipped with a zero-point positioning chuck and a quick-change connector. The zero-point chuck engages with pull studs on four components: the heavy-duty boring bar assembly (e), the boring bar fixing assembly (g), the power seat assembly (f), and the protective cover assembly (h), enabling rapid positioning and clamping of the workpiece or tooling. A quick-change method is proposed, in which all components are designed in layers. The bottom layer is the heavy-duty tool storage device a, whose zero-point chuck is powered directly by an air source. The middle layer consists of a heavy-duty boring bar assembly e, a boring bar fixing assembly g, a power seat assembly f, and a protective cover assembly h. Quick-change connectors provide power to the zero-point chucks on the boring bar fixing assembly g, the power seat assembly f, and the protective cover assembly h, enabling the zero-point chucks on these components to connect with the pull studs on the milling spindle assembly i, achieving rapid positioning and clamping of the components. The top layer is the milling spindle assembly i. This method mainly involves the kinematic coordination between the heavy-duty tool storage device a and the heavy-duty boring bar assembly e, the boring bar fixing assembly g, the power seat assembly f, the protective cover assembly h, and the milling spindle assembly i. Furthermore, through a specific quick-change method, the automatic storage and exchange of these four components are achieved, solving the problem that heavy-duty tools and auxiliary devices cannot be stored in the tool magazine.

[0005] The technical solution of the present invention:

[0006] A heavy-duty tool storage device for machine tools based on a zero-point positioning system includes station b, station c, and station d.

[0007] The heavy-duty tool storage device of this machine tool mainly consists of a base plate 1, a first linear guide rail 2, a first mounting base plate 3, a second mounting base plate 4, a second linear guide rail 5, a third mounting base plate 6, a first zero-point chuck 7, a boring bar seat fixing base plate 8, a first triangular support 9, an extended boring bar fixing base plate 10, a first hydraulic cylinder 11, a second triangular support 12, a second zero-point chuck 13, a third triangular support 14, a two-finger cylinder 15, a V-shaped support 16, a fourth triangular support 17, a second hydraulic cylinder 18, a third linear guide rail 19, a first quick-change connector 20, a flat rotary table fixing base plate 21, a third hydraulic cylinder 22, and a protective cover fixing base plate 23.

[0008] The first linear guide rail 2 is fixed on the base plate 1, the first mounting base plate 3 is mounted on the first linear guide rail 2, the flat rotary plate fixing base plate 21 is mounted on the first mounting base plate 3, the fourth triangular support 17 is connected to the first mounting base plate 3 and the flat rotary plate fixing base plate 21, the protective cover fixing base plate 23 is mounted on the flat rotary plate fixing base plate 21, and the flat rotary plate fixing base plate 21 and the protective cover fixing base plate 23 are both equipped with the first zero-point chuck 7 and the first quick-change connector 20; the third hydraulic cylinder 22 is fixed on the base plate 1, and its cylinder rod is connected to the first mounting base plate 3 to form station one b; when the cylinder rod of the third hydraulic cylinder 22 extends, station one b extends; when the cylinder rod of the third hydraulic cylinder 22 retracts, station one b retracts.

[0009] The third linear guide 19 is fixed on the base plate 1, the second mounting base plate 4 is mounted on the third linear guide 19, the extended boring bar fixing base plate 10 is mounted on the second mounting base plate 4, and the extended boring bar fixing base plate 10 is equipped with a second zero-point chuck 13; the first triangular support 9 and the third triangular support 14 are symmetrically arranged on both sides of the extended boring bar fixing base plate 10 and are respectively connected to the second mounting base plate 4 and the extended boring bar fixing base plate 10; the V-shaped support 16 and the two-finger cylinder 15 are mounted on the second mounting base plate 4, the second hydraulic cylinder 18 is fixed on the base plate 1, and its cylinder rod is connected to the second mounting base plate 4 to form station two c; when the cylinder rod of the second hydraulic cylinder 18 extends, station two c extends; when the cylinder rod of the second hydraulic cylinder 18 retracts, station two c retracts.

[0010] The second linear guide 5 is fixed on the base plate 1, the third mounting base plate 6 is mounted on the second linear guide 5, the boring bar seat fixing base plate 8 is mounted on the third mounting base plate 6, and the first zero-point chuck 7 and the first quick-change connector 20 are mounted on the boring bar seat fixing base plate 8; the second triangular support 12 is connected to the third mounting base plate 6 and the boring bar seat fixing base plate 8 respectively; the first hydraulic cylinder 11 is fixed on the base plate 1, and its cylinder rod is connected to the third mounting base plate 6 to form a station 3d; when the cylinder rod of the first hydraulic cylinder 11 extends, the station 3d extends; when the cylinder rod of the first hydraulic cylinder 11 retracts, the station 3d retracts.

[0011] The first linear guide 2, the second linear guide 5, and the third linear guide 19 are wide-width, high-rigidity linear motion rolling guides. The first mounting base plate 3, the second mounting base plate 4, and the third mounting base plate 6 adopt a flanged design. The protective cover fixing base plate 23, the flat rotating plate fixing base plate 21, the first mounting base plate 3, the extended boring bar fixing base plate 10, the second mounting base plate 4, the boring bar seat fixing base plate 8, and the third mounting base plate 6 adopt a layered independent design. The protective cover fixing base plate 23 and the flat rotating plate fixing base plate 21 are made of aluminum alloy and are equipped with a fourth triangular support 17 at the rear. The extended boring bar fixing base plate 10 is equipped with a first triangular support 9 and a third triangular support 14 at the front and rear, respectively. The boring bar seat fixing base plate 8 is made of aluminum alloy and is equipped with a second triangular support 12 at the rear. These measures effectively ensure the rigidity of the cantilevered part when the three workstations extend.

[0012] A quick-change method for a heavy-duty tool storage device for machine tools based on a zero-point positioning system includes kinematic coordination between the heavy-duty tool storage device a, a heavy-duty boring bar assembly e, a power seat assembly f, a boring bar fixing assembly g, a protective cover assembly h, and a milling spindle assembly i; initially, the heavy-duty boring bar assembly e, the power seat assembly f, the boring bar fixing assembly g, and the protective cover assembly h are all stored in the heavy-duty tool storage device a.

[0013] The heavy-duty boring bar assembly e mainly consists of a heavy-duty boring bar 24, a connecting plate 25, and a first pull stud 26. The quick change of the heavy-duty boring bar assembly e is achieved by the movement position change of the milling spindle assembly i and the telescopic movement of the station c. The heavy-duty boring bar assembly e stored in the station c is supported by a V-shaped support 16 and clamped by a two-finger cylinder 15. The first pull stud 26 is fixedly installed with the second zero-point chuck 13 on the station c. The hydraulic expansion sleeve 30 in the boring bar fixing assembly g holds the heavy-duty boring bar 24. The pull mechanism 33 in the milling spindle assembly i pulls the tool holder tight. The second zero-point chuck 13 is vented and the second zero-point chuck 13 is released from the first pull stud 26, realizing the quick change of the heavy-duty boring bar assembly e.

[0014] The power seat assembly f mainly consists of a power seat 31, a first zero-point chuck 7, a second pull pin 28, and a second quick-change connector 29. The quick-change of the power seat assembly f is achieved by the movement position change of the milling spindle assembly i and the telescopic movement of station b. The second pull pin 28 on the power seat assembly f is fixedly installed with the first zero-point chuck 7 on station b. The first zero-point chuck 7 is vented. The first zero-point chuck 7 and the second pull pin 28 on the power seat assembly f are released. The first quick-change connector 20 on station b is vented and then de-vented. The first zero-point chuck 7 on the power seat assembly f is clamped with the second pull pin 28 on the milling spindle assembly i, thus realizing the quick-change of the power seat assembly f.

[0015] The boring bar fixing assembly g mainly consists of a mounting base 27, a first zero-point chuck 7, a second pull stud 28, a second quick-change connector 29, and a hydraulic expansion sleeve 30. The quick-change of the boring bar fixing assembly g is achieved by the movement position change of the milling spindle assembly i and the telescopic movement of the station 3d. The second pull stud 28 on the boring bar fixing assembly g is fixedly installed with the first zero-point chuck 7 on the station 3d. The first zero-point chuck 7 is vented. The first zero-point chuck 7 and the second pull stud 28 on the boring bar fixing assembly g are released. The first quick-change connector 20 on the station 3d is vented and then de-vented. The first zero-point chuck 7 on the boring bar fixing assembly g is clamped with the second pull stud 28 on the milling spindle assembly, realizing the quick change of the boring bar seat assembly g.

[0016] The protective cover assembly h mainly consists of a protective cover plate 32, a first zero-point chuck 7, a second pull stud 28, and a second quick-change connector 29. The quick-change of the protective cover assembly h is achieved by the movement position change of the milling spindle assembly i and the telescopic movement of the station b. The second pull stud 28 on the protective cover assembly h is fixedly installed with the first zero-point chuck 7 on the station b. The first zero-point chuck 7 is vented. The first zero-point chuck 7 is released from the second pull stud 28 on the protective cover unit. The first quick-change connector 20 on the station b is vented and then de-vented. The first zero-point chuck 7 on the protective cover assembly h is clamped with the second pull stud 28 on the milling spindle assembly i, thus realizing the quick-change of the protective cover assembly h.

[0017] The milling spindle assembly i mainly consists of a broaching mechanism 33, a housing 34, a quick-change connector 35, and a second pull stud 28. The broaching mechanism 33 is fixedly connected to the housing 34, and the quick-change connector 35 and the second pull stud 28 are installed on the housing 34. The milling spindle assembly i achieves connection with the boring bar fixing assembly g, the heavy-duty boring bar assembly e, the power seat assembly f, and the protective cover assembly h through changes in its movement position. In this way, these heavy-duty tools and auxiliary devices move with the milling spindle assembly i to achieve specific processes.

[0018] The beneficial effects of this invention are as follows: This invention is the first to configure a heavy-duty tool storage device based on a zero-point positioning system in a milling-turning composite machine tool, and designs a specific quick-change method in conjunction with the heavy-duty boring bar assembly e, the boring bar fixing assembly g, the power seat assembly f, the protective cover assembly h, and the milling spindle assembly i. The zero-point positioning system has a large clamping force, high repeatability, and is easy to operate. It can realize stable and reliable automatic storage and replacement of each component, solving the problem that heavy-duty tools and auxiliary devices cannot be stored in the tool magazine, improving the processing efficiency of parts manufacturing, and providing a new method for the storage and replacement of tools in milling-turning composite machine tools. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a heavy-duty tool storage device for machine tools.

[0020] Figure 2 This is a schematic diagram of the heavy-duty boring bar assembly e.

[0021] Figure 3 The diagram shows the structure of the boring bar fixing assembly g; where (a) is a perspective view and (b) is a perspective view.

[0022] Figure 4 The diagram shows the structure of the power seat assembly f; where (a) is a perspective view and (b) is a perspective view.

[0023] Figure 5 The diagram shows the structure of the protective cover assembly h; where (a) is a perspective view and (b) is a perspective view.

[0024] Figure 6 This is a schematic diagram of the structure of milling spindle assembly i.

[0025] Figure 7 This is a schematic diagram showing the initial state of the heavy-duty tool storage device for storing various components.

[0026] Figure 8 This is a schematic diagram of the tool change for the boring bar holder fixing assembly.

[0027] Figure 9 This is a schematic diagram of the tool changer for the heavy-duty boring bar assembly.

[0028] Figure 10 Schematic diagram of tool changer for power unit f.

[0029] Figure 11 Diagram of tool changer for protective cover assembly h.

[0030] In the diagram: 1. Base plate; 2. First linear guide rail; 3. First mounting base plate; 4. Second mounting base plate; 5. Second linear guide rail; 6. Third mounting base plate; 7. First zero-point chuck; 8. Boring bar holder fixing base plate; 9. First triangular support; 10. Extended boring bar fixing base plate; 11. First hydraulic cylinder; 12. Second triangular support; 13. Second zero-point chuck; 14. Third triangular support; 15. Two-finger cylinder; 16. V-shaped support; 17. Fourth triangular support; 18. Second hydraulic cylinder; 19. Third linear guide rail; 20. First quick-change joint; 21. Flat rotary table 22 Fixed base plate; 23 Third hydraulic cylinder; 24 Protective cover fixed base plate; 25 Heavy-duty boring bar; 26 Connecting plate; 27 First pull stud; 28 Mounting seat; 29 Second pull stud; 20 Second quick-change connector; 31 Hydraulic expansion sleeve; 32 Power seat; 33 Protective cover plate; 34 Pulling mechanism; 35 Housing; 36 Quick-change connector; a Heavy-duty tool storage device for machine tools; b Station 1; c Station 2; d Station 3; e Heavy-duty boring bar assembly; f Power seat assembly; g Boring bar fixing assembly; h Protective cover assembly; i Milling spindle assembly. Detailed Implementation

[0031] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and technical solutions.

[0032] This invention provides a heavy-duty machine tool storage device and quick-change method based on a zero-point positioning system. A three-dimensional structural diagram of the device is shown below. Figure 1 As shown, the components stored and replaced by this device are as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, Figure 6 For milling spindle assembly i, Figure 7 This diagram illustrates the initial state of each component stored in the machine tool's heavy-duty tool storage device. An exploded view of the tool changing method used in the machine tool application is shown below. Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown.

[0033] A heavy-duty tool storage device for machine tools based on a zero-point positioning system. The device mainly consists of three workstations. In the initial state, the heavy-duty boring bar assembly e, the boring bar fixing assembly g, the power seat assembly f, and the protective cover assembly h are stored in the three workstations of the heavy-duty tool storage device a.

[0034] The quick-change method for machine tool applications is implemented as follows:

[0035] Initially, the third cylinder 22, the second cylinder 18, and the first cylinder 11 are in the retracted state. The heavy-duty boring bar assembly e, the boring bar fixing assembly g, the power seat assembly f, and the protective cover assembly h are stored in the machine tool heavy-duty tool storage device a. Station one b stores the power seat assembly f and the protective cover assembly h, station two c stores the heavy-duty boring bar assembly e, and station three d stores the boring bar fixing assembly g. The milling spindle assembly i is waiting in the set position.

[0036] The first hydraulic cylinder 11 extends, and the corresponding station 3D extends. The first quick-change connector 20 on station 3D is vented, and the first zero-point chuck 7 on the boring bar fixing assembly g opens. The milling spindle assembly i moves to the docking position above the boring bar fixing assembly g. The first zero-point chuck 7 on station 3D is vented and opened, and the second pull stud 28 on the boring bar fixing assembly g is disconnected from the first zero-point chuck 7 on station 3D. The first quick-change connector 20 on station 3D is de-vented, and the first zero-point chuck 7 on the boring bar fixing assembly g is locked to the second pull stud 28 on the milling spindle assembly i. The boring bar fixing assembly g connects to the milling spindle assembly i and moves to the set position. The first hydraulic cylinder 11 retracts, and the corresponding station 3D retracts. The second hydraulic cylinder 18 extends, and the corresponding station 2c extends as well. The milling spindle assembly i, along with the boring bar fixing assembly g, moves to the docking position with the heavy-duty boring bar assembly e. The hydraulic expansion sleeve 30 in the boring bar fixing assembly g clamps the heavy-duty boring bar 24, while the pull-out mechanism 33 in the milling spindle assembly i tightens the tool holder. The second zero-point chuck 13 on station 2b opens, the two-finger cylinder 15 opens, and the heavy-duty boring bar assembly e disconnects from station 2b. The heavy-duty boring bar assembly e connects to the boring bar fixing assembly g and the milling spindle assembly i and moves to the working position. The second hydraulic cylinder 18 retracts, and the corresponding station 2c retracts as well. This completes the tool changing process for the heavy-duty boring bar assembly e. The tool return process is the reverse of the tool changing process: first return the heavy-duty boring bar assembly e, then return the boring bar fixing assembly g.

[0037] The third hydraulic cylinder 22 extends, and the corresponding station 1b extends. The first quick-change connector 20 on station 1b is vented, and the first zero-point chuck 7 on the power base assembly f opens. The milling spindle assembly i moves to the docking position above the power base assembly f. The first zero-point chuck 7 on station 1b is vented and opened, the second pull stud 28 on the power base assembly f disconnects from the first zero-point chuck 7 on station 1b, the first quick-change connector 20 on station 1b is de-vented, and the first zero-point chuck 7 on the power base assembly f locks with the second pull stud 28 on the milling spindle assembly i. The power base assembly f connects to the milling spindle assembly i and moves to the set position. The third hydraulic cylinder 22 retracts, and the corresponding station 1b retracts. This completes the tool changing process of the power base assembly f. The tool return process is the reverse of the tool changing process.

[0038] The third hydraulic cylinder 22 extends, and the corresponding station 1b extends. The first quick-change connector 20 on station 1b is vented, and the first zero-point chuck 7 on the protective cover assembly h opens. The milling spindle assembly i moves to the docking position above the protective cover assembly h. The first zero-point chuck 7 on station 1b is vented and opened, and the second pull stud 28 on the protective cover assembly h is disconnected from the first zero-point chuck 7 on station 1b. The first quick-change connector 20 on station 1b is de-vented, and the first zero-point chuck 7 on the protective cover assembly locks with the second pull stud 28 on the milling spindle assembly i. The protective cover assembly h is connected to the milling spindle assembly i and moves to the set position. The third hydraulic cylinder 22 retracts, and the corresponding station 1b retracts. This completes the tool changing process of the protective cover assembly h. The tool return process is the reverse of the tool changing process.

[0039] The heavy-duty machine tool storage device a of this invention is based on a zero-point positioning system. The zero-point positioning system features high repeatability, large clamping force, and ease of operation, effectively ensuring the stability and reliability of storage and replacement of each component. Structurally, the heavy-duty machine tool storage device a employs a wide-width, high-rigidity linear motion rolling guide rail. The mounting base plate adopts a flanged design, and the zero-point chuck mounting base and mounting base plate are designed in layers with independent operation. Special material selection was made for the base, and a triangular support connection was used between the base and the mounting base plate, effectively ensuring the rigidity of the three workstations in a cantilevered state and guaranteeing the accuracy of the zero-point positioning system's docking. Through a specific quick-change method, all components of this method are designed in layers, integrating the power supply for the boring bar fixing component g, power seat component f, protective cover component h, and upper milling spindle component i into the heavy-duty machine tool storage device a, cleverly solving the problem of power supply for the intermediate layers. Applying this invention to milling and turning composite machine tools solves the problem that heavy tools and auxiliary devices cannot be stored in the tool magazine, and proposes a new structure and control method for the storage and replacement of tools in milling and turning composite machine tools.

Claims

1. A heavy-duty machine tool storage device based on a zero-point positioning system, characterized in that, The heavy-duty tool storage device of this machine tool is mainly composed of a base plate (1), a first linear guide rail (2), a first mounting base plate (3), a second mounting base plate (4), a second linear guide rail (5), a third mounting base plate (6), a first zero-point chuck (7), a boring bar seat fixing base plate (8), a first triangular support (9), an extended boring bar fixing base plate (10), a first hydraulic cylinder (11), a second triangular support (12), a second zero-point chuck (13), a third triangular support (14), a two-finger cylinder (15), a V-shaped support (16), a fourth triangular support (17), a second hydraulic cylinder (18), a third linear guide rail (19), a first quick-change connector (20), a flat rotary table fixing base plate (21), a third hydraulic cylinder (22), and a protective cover fixing base plate (23); specifically including station one (b), station two (c), and station three (d); The first linear guide (2) is fixed on the base plate (1), the first mounting base plate (3) is mounted on the first linear guide (2), the flat rotary plate fixing base plate (21) is mounted on the first mounting base plate (3), the fourth triangular support (17) is connected to the first mounting base plate (3) and the flat rotary plate fixing base plate (21), the protective cover fixing base plate (23) is mounted on the flat rotary plate fixing base plate (21), and the flat rotary plate fixing base plate (21) and the protective cover fixing base plate (23) are both equipped with the first zero point chuck (7) and the first quick-change connector (20); the third oil cylinder (22) is fixed on the base plate (1), and its cylinder rod is connected to the first mounting base plate (3) to form station one (b); the cylinder rod of the third oil cylinder (22) extends out, station one (b) extends out, the cylinder rod of the third oil cylinder (22) retracts, and station one (b) retracts; The third linear guide (19) is fixed on the base plate (1), the second mounting base plate (4) is mounted on the third linear guide (19), the extended boring bar fixing base plate (10) is mounted on the second mounting base plate (4), and the second zero point chuck (13) is mounted on the extended boring bar fixing base plate (10); the first triangular support (9) and the third triangular support (14) are symmetrically arranged on both sides of the extended boring bar fixing base plate (10) and are respectively connected to the second mounting base plate (4) and the extended boring bar fixing base plate (10); the V-shaped support (16) and the two-finger cylinder (15) are mounted on the second mounting base plate (4), the second oil cylinder (18) is fixed on the base plate (1), and its cylinder rod is connected to the second mounting base plate (4) to form the second station (c); the cylinder rod of the second oil cylinder (18) extends out, the second station (c) extends out, the cylinder rod of the second oil cylinder (18) retracts, and the second station (c) retracts; The second linear guide (5) is fixed on the base plate (1), the third mounting base plate (6) is mounted on the second linear guide (5), the boring bar seat fixing base plate (8) is mounted on the third mounting base plate (6), and the first zero point chuck (7) and the first quick-change connector (20) are mounted on the boring bar seat fixing base plate (8); the second triangular support (12) is connected to the third mounting base plate (6) and the boring bar seat fixing base plate (8) respectively; the first hydraulic cylinder (11) is fixed on the base plate (1), and its cylinder rod is connected to the third mounting base plate (6) to form the third station (d); the cylinder rod of the first hydraulic cylinder (11) extends out, the third station (d) extends out, the cylinder rod of the first hydraulic cylinder (11) retracts, and the third station (d) retracts.

2. The heavy-duty machine tool storage device according to claim 1, characterized in that, The first linear guide (2), the second linear guide (5), and the third linear guide (19) are linear motion rolling guides. The first mounting base plate (3), the second mounting base plate (4), and the third mounting base plate (6) are designed with a flange shape. The protective cover fixing base plate (23), the flat rotating plate fixing base plate (21), the first mounting base plate (3), the extended boring bar fixing base plate (10), the second mounting base plate (4), the boring bar seat fixing base plate (8), and the third mounting base plate (6) are designed with a layered independent structure. The protective cover fixing base plate (23) and the flat rotating plate fixing base plate (21) are made of aluminum alloy and are equipped with a fourth triangular support (17) at the rear. The extended boring bar fixing base plate (10) is equipped with a first triangular support (9) and a third triangular support (14) at the front and rear respectively. The boring bar seat fixing base plate (8) is made of aluminum alloy and is equipped with a second triangular support (12) at the rear.

3. A quick-change method for a heavy-duty machine tool storage device based on a zero-point positioning system, implemented by the heavy-duty machine tool storage device as described in claim 1 or 2, characterized in that, The quick-change method for the heavy-duty tool storage device of the machine tool includes the kinematic coordination between the heavy-duty tool storage device (a) and the heavy-duty boring bar assembly (e), the power seat assembly (f), the boring bar fixing assembly (g), the protective cover assembly (h), and the milling spindle assembly (i); in the initial state, the heavy-duty boring bar assembly (e), the power seat assembly (f), the boring bar fixing assembly (g), and the protective cover assembly (h) are all stored in the heavy-duty tool storage device (a).

4. The quick-change method for the heavy-duty tool storage device of a machine tool according to claim 3, characterized in that, The heavy-duty boring bar assembly (e) mainly consists of a heavy-duty boring bar (24), a connecting plate (25), and a first pull stud (26). The quick change of the heavy-duty boring bar assembly (e) is achieved by the movement position change of the milling spindle assembly (i) and the telescopic movement of station two (c). The heavy-duty boring bar assembly (e) stored in station two (c) is supported by a V-shaped support (16) and clamped by a two-finger cylinder (15). The first pull stud (26) is fixedly installed with the second zero-point chuck (13) on the second workstation (c). The hydraulic expansion sleeve (30) in the boring bar fixing assembly (g) holds the heavy-duty boring bar (24). The pull mechanism (33) in the milling spindle assembly (i) pulls the tool holder tight. The second zero-point chuck (13) is vented. The second zero-point chuck (13) is released from the first pull stud (26), realizing the quick change of the heavy-duty boring bar assembly (e).

5. The quick-change method for the heavy-duty tool storage device of a machine tool according to claim 3, characterized in that, The power seat assembly (f) mainly consists of a power seat (31), a first zero-point chuck (7), a second pull pin (28), and a second quick-change connector (29). The quick change of the power seat assembly (f) is achieved by the movement position change of the milling spindle assembly (i) and the telescopic movement of station one (b). The second pull pin (28) on the power seat assembly (f) is fixedly installed with the first zero-point chuck (7) on station one (b). The first zero-point chuck (7) is ventilated. The first zero-point chuck (7) is released from the second pull pin (28) on the power seat assembly (f). The first quick-change connector (20) on station one (b) is ventilated and then de-ventilated. The first zero-point chuck (7) on the power seat assembly (f) is clamped with the second pull pin (28) on the milling spindle assembly (i), thereby realizing the quick change of the power seat assembly (f).

6. The quick-change method for the heavy-duty tool storage device for machine tools according to claim 3, characterized in that, The boring bar fixing assembly (g) mainly consists of a mounting base (27), a first zero-point chuck (7), a second pull stud (28), a second quick-change connector (29), and a hydraulic expansion sleeve (30). The quick change of the boring bar fixing assembly (g) is achieved by the movement position change of the milling spindle assembly (i) and the telescopic movement of station three (d). The second pull stud (28) on the boring bar fixing assembly (g) is fixedly installed with the first zero-point chuck (7) on station three (d). The first zero-point chuck (7) is vented. The first zero-point chuck (7) is released from the second pull stud (28) on the boring bar fixing assembly (g). The first quick-change connector (20) on station three (d) is vented and then de-vented. The first zero-point chuck (7) on the boring bar fixing assembly (g) is clamped with the second pull stud (28) on the milling spindle assembly, thereby realizing the quick change of the boring bar seat assembly (g).

7. The quick-change method for the heavy-duty tool storage device of a machine tool according to claim 3, characterized in that, The protective cover assembly (h) mainly consists of a protective cover plate (32), a first zero-point chuck (7), a second pull stud (28), and a second quick-change connector (29). The quick change of the protective cover assembly (h) is achieved by the movement position change of the milling spindle assembly (i) and the telescopic movement of station one (b). The second pull stud (28) on the protective cover assembly (h) is fixedly installed with the first zero-point chuck (7) on station one (b). The first zero-point chuck (7) is ventilated. The first zero-point chuck (7) is released from the second pull stud (28) on the protective cover unit. The first quick-change connector (20) on station one (b) is ventilated and then de-ventilated. The first zero-point chuck (7) on the protective cover assembly (h) is clamped with the second pull stud (28) on the milling spindle assembly (i), thereby realizing the quick change of the protective cover assembly (h).

8. The quick-change method for the heavy-duty tool storage device of a machine tool according to claim 3, characterized in that, The milling spindle assembly (i) mainly consists of a broaching mechanism (33), a housing (34), a quick-change connector (35), and a second pull stud (28); the broaching mechanism (33) is fixedly connected to the housing (34), and the quick-change connector (35) and the second pull stud (28) are installed on the housing (34); the milling spindle assembly (i) is connected to the boring bar fixing assembly (g), the heavy boring bar assembly (e), the power seat assembly (f), and the protective cover assembly (h) by changing its movement position.

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