Five-axis numerical control machine tool

Abstract

The utility model discloses a five-axis numerical control machine tool which comprises a base. The five-axis cam rotary table is movably arranged above the base in the X-axis direction and comprises a machining table used for limiting a workpiece to be machined, a horizontal angle adjusting structure and a vertical angle adjusting structure. The workpiece machining assembly comprises a supporting seat fixed to one end of the base in the X-axis direction, a machining support movably arranged on the supporting seat in the Y-axis direction and a workpiece machining unit movably arranged on the machining support in the Z-axis direction, and the workpiece machining unit is located above the machining table; the knife rest is fixed at one end of the base along the Y-axis direction; the disc tool magazine is fixed at the top end of the tool rest; and a machine tool control system. According to the numerical control machine tool, the horizontal angle and the vertical angle of the workpiece to be machined can be adjusted, multiple faces of the workpiece to be machined can be machined, and the numerical control machine tool is compact in structure and small in space size.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a five-axis numerically controlled machine tool. Background Art

[0002] In the fields of titanium alloy, high temperature alloy and high strength steel, the traditional processing method is used. When the tool contacts the workpiece for cutting, there is a force between the tool and the workpiece, which causes a slight elastic deformation of the cutting tool and the workpiece, affecting the processing accuracy. At the same time, it is difficult to process holes in some special positions, such as the processing of small holes in the engine combustion chamber, using conventional processing methods. Therefore, the existing technology uses laser processing holes.

[0003] CNC machine tools are digitally controlled machine tools. They are automated machine tools equipped with a program control system. Information is input into the CNC device through an information carrier, and after calculation and processing, the CNC device sends out various control signals to control the movement of the machine tool and automatically process parts according to the shape and size required by the drawing.

[0004] Cam machine tools need to process multiple sides of workpieces during processing, and existing cam machine tools cannot achieve the various large swing angle adjustments required for processing. If the workpiece is transferred and clamped multiple times to achieve overall processing, the processing accuracy of the workpiece will be affected due to multiple clamping processes. Utility Model Content

[0005] In order to solve at least one technical problem of the prior art, the utility model provides a five-axis CNC machine tool.

[0006] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is: a five-axis CNC machine tool, comprising: a base;

[0007] A five-axis cam turntable is movably arranged above the base along the X-axis direction, comprising a processing table for limiting the position of the workpiece to be processed, a horizontal angle adjustment structure connected to the processing table and driving the processing table to rotate in the horizontal direction to adjust the angle of the workpiece to be processed in the horizontal direction, and a vertical angle adjustment structure connected to the horizontal angle adjustment structure and driving the horizontal angle adjustment structure to rotate in the vertical direction to adjust the inclination angle of the workpiece to be processed in the vertical direction;

[0008] A workpiece processing assembly, comprising a support seat fixed at one end of the base along the X-axis direction, a processing bracket movably arranged on the support seat along the Y-axis direction, and a workpiece processing unit movably arranged on the processing bracket along the Z-axis direction, wherein the workpiece processing unit is located above the processing table;

[0009] A tool holder is fixed at one end of the base along the Y-axis direction;

[0010] a disc tool magazine, fixed to the top of the tool holder, for providing tools for the workpiece machining assembly and mounting the tools on the workpiece machining unit; and

[0011] A machine tool control system is electrically connected to the five-axis cam turntable, the workpiece processing assembly and the disc tool magazine.

[0012] In some embodiments, the upper surface of the base is fixed with two first slide rails extending along the X-axis direction to the front end surface of the support seat and a first driving component connected to the five-axis cam turntable and driving the five-axis cam turntable to approach or move away from the workpiece processing assembly along the X-axis direction;

[0013] The five-axis cam turntable further comprises a base, which is slidably connected to the first slide rail and connected to the first driving component;

[0014] The vertical angle adjustment structure includes a main angle adjustment component and a slave angle adjustment component fixed at both ends of the base along the Y-axis direction, and the horizontal angle adjustment structure is arranged between the main angle adjustment component and the slave angle adjustment component and is connected to the main angle adjustment component and the slave angle adjustment component respectively.

[0015] In some embodiments, the main angle adjustment assembly includes a main shell body that can be removably fixed to one end of the base, a main rotating unit disposed in the main shell body and connected to the horizontal angle adjustment structure to drive the horizontal angle adjustment structure to rotate in a vertical direction, a motor shell that can be removably fixed to the main shell body, and a second motor disposed in the motor shell and connected to the main rotating unit to drive the main rotating unit to operate.

[0016] In some embodiments, the main rotating unit includes a main rotating shaft rotatably arranged in the main housing along the Y-axis direction, a second roller cam fixedly mounted on the main rotating shaft, a second transmission shaft rotatably arranged in the main housing along the X-axis direction, a second driving wheel fixed on the output shaft of the second motor, a second driven wheel fixed on the second transmission shaft, and a second synchronous belt connecting the second driving wheel and the second driven wheel, and the second transmission shaft is arranged below the second roller cam and engages with the second roller cam for transmission.

[0017] In some embodiments, the slave angle adjustment assembly includes a slave housing detachably fixed to the other end of the base, and a bearing hole is formed at one end of the slave housing facing the horizontal angle adjustment structure;

[0018] The angle adjustment assembly also includes a sixth bearing group, which is installed in the bearing hole and is detachably connected to the horizontal angle adjustment structure.

[0019] In some embodiments, the horizontal angle adjustment structure includes a first housing detachably connected to the vertical angle adjustment structure, a first rotating shaft disposed in the first housing along the Z-axis direction and connected to the processing table, a first motor disposed in the first housing, and a first transmission assembly respectively connected to the first motor and the first rotating shaft;

[0020] The first transmission assembly includes a first roller cam fixed on the first rotating shaft, a first transmission shaft rotatably arranged in the first housing along the X-axis direction, a first driving wheel fixed on the output shaft of the first motor, a first driven wheel fixed on the first transmission shaft, and a first synchronous belt connecting the first driving wheel and the first driven wheel, and the first transmission shaft is engaged with the first roller cam for transmission.

[0021] In some embodiments, the workpiece processing unit includes a connecting frame extending along the X-axis direction, a processing motor fixed on the top of the connecting frame, and a processing shaft rotatably arranged in the connecting frame along the Z-axis direction and with the lower end exposed from the lower surface of the connecting frame, the upper end of the processing shaft is connected to the processing motor, and the lower end of the processing shaft is provided with a connecting portion connected to the tool.

[0022] In certain embodiments, the disc tool magazine includes a tool magazine body, a tool disc rotatably connected to the tool magazine body, a plurality of tool sleeves evenly distributed on the circumferential edge of the tool disc, a plurality of tools placed in the plurality of tool sleeves, a tool disc motor fixed to the tool magazine body and driving the tool disc to rotate, a steering assembly that drives the tool sleeve to switch directions, an ATC automatic tool changing mechanism fixed to the tool magazine body, and a tool changing arm connected to the ATC automatic tool changing mechanism, wherein the ATC automatic tool changing mechanism drives the tool changing arm to take out the tool in the tool sleeve and install it on the workpiece processing unit.

[0023] In some embodiments, the disc tool magazine further includes a second transmission assembly, and the cutter disc motor is connected to the cutter disc through the second transmission assembly and drives the cutter disc to rotate;

[0024] The second transmission assembly includes an integrated camshaft, a driving gear fixed on the output shaft of the cutter disc motor, a driven gear fixed on the integrated camshaft, and a chain connecting the driving gear and the driven gear. The integrated camshaft is provided with spiral meshing ribs, and the cutter disc is provided with a plurality of needle bearings evenly and spacedly distributed along the circumference, and the needle bearings are meshed with the meshing ribs.

[0025] In some embodiments, the steering assembly includes a steering cylinder fixed to the tool magazine body and a steering push plate connected to the telescopic rod of the steering cylinder, and a controllable throttle valve is installed on the pipeline connecting the steering cylinder and the air source;

[0026] The disc tool magazine also includes an APB digital display control box and an angle encoder fixed on the ATC automatic tool changing mechanism. The controllable throttle valve and the APB digital display control box are connected to the machine tool control system. The ATC automatic tool changing mechanism, the tool disc motor and the steering cylinder can execute different operating speeds for different tools under the control of the machine tool control system.

[0027] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0028] The five-axis CNC machine tool of the utility model can adjust the workpiece to be processed in the vertical direction and the horizontal direction, so that multiple surfaces of the workpiece to be processed can be processed;

[0029] The camshaft of the disc tool magazine of the utility model directly meshes with the needle bearing of the cutter disc, and there is no need to set a cam rotating plate, which simplifies the structure of the tool magazine and reduces the cost of the tool magazine; at the same time, the steering assembly of the utility model is fixed on the tool magazine body and is arranged on the same side as the cutter disc motor, so there is no need to reserve installation space for the steering assembly, making the structure of the tool magazine more compact and reducing the volume of the tool magazine;

[0030] The tool magazine is equipped with an APB digital display control box, which can cooperate with the angle encoder and the machine tool control system to realize different operating speeds according to different tools, thereby saving tool magazine tool change time. At the same time, different tools run at different speeds to avoid vibration of the machine tool during tool change, protect the machine tool tool spindle hole from tool inertia impact, thereby improving the stability of the disc tool magazine and extending the service life of the disc tool magazine.

[0031] The APB digital display control box can be set to send control signals to the machine tool control system in advance, thereby shortening the waiting time of the tool change arm during the tool change process, thereby improving the tool change efficiency of the tool magazine and the operation efficiency of the machine tool;

[0032] The connecting pipeline between the steering cylinder and the air source is equipped with a controllable throttle valve, which is connected to the machine tool control system. The controllable throttle valve can adjust the airflow supplied to the steering cylinder under the control of the machine tool control system, thereby controlling the speed at which the steering cylinder pushes the tool sleeve, so that the steering cylinder can execute different operating speeds for different tools, thereby improving the stability of the tool magazine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The three-dimensional structure of a five-axis CNC machine tool of the utility model is schematically shown;

[0034] Figure 2 It is a three-dimensional structural schematic diagram of the five-axis cam turntable of the utility model;

[0035] Figure 3 This is a cross-sectional view of the utility model of the five-axis cam turntable behind the hidden shield;

[0036] Figure 4 The three-dimensional structure of the horizontal angle adjustment structure of the utility model Figure 1 ;

[0037] Figure 5 The three-dimensional structure of the horizontal angle adjustment structure of the utility model Figure 2 ;

[0038] Figure 6 A three-dimensional diagram of the main angle adjustment component of the utility model;

[0039] Figure 7 A three-dimensional structural diagram of a workpiece processing assembly for a utility model;

[0040] Figure 8 This is a schematic diagram of the three-dimensional structure of the utility model disc tool magazine behind the hidden shield;

[0041] Fig. 9 This is an exploded view of the hidden shield parts of the disc tool magazine of the utility model;

[0042] Fig.10 This is a schematic diagram of the structure of the tool magazine body of the utility model;

[0043] Fig.11 This is a schematic diagram of the structure of the cutter disc of the utility model;

[0044] Fig.12 This is a schematic diagram of the cooperation between the tool sleeve and the steering assembly of the utility model;

[0045] Fig.13 This is a schematic diagram of the structure of the knife sheath of the utility model;

[0046] Fig.14 It is a structural schematic diagram of the transmission component of the utility model. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0050] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0051] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0053] Reference Figure 1 The present invention provides a five-axis CNC machine tool, including a base 1, a five-axis cam turntable 2 movably arranged above the base 1 along the X-axis direction, a workpiece processing assembly 3 fixed at one end of the base 1 along the X-axis direction, a tool holder 4 fixed at one end of the base 1 along the Y-axis direction, a disc tool magazine 4 fixed at the top of the tool holder 4, and a machine tool control system.

[0054] Two first bosses 11 protrude upward from both ends of the upper end surface of the base 1 along the Y-axis direction. The two first bosses 11 extend from the front end to the rear end of the base 1 along the X-axis direction. The tops of the two first bosses 11 are fixed with first slide rails 12 extending along the X-axis direction to the front end surface of the workpiece processing assembly 3. The first slide rails 12 are slidably connected to the five-axis cam turntable 2. A first driving component 13 is also fixed to the upper end surface of the base 1. The first driving component 13 is fixedly connected to the five-axis cam turntable 2, and the five-axis cam turntable 2 is driven by the first driving component 13 to approach or move away from the workpiece processing assembly 3 along the extension direction of the first slide rail 12. The first driving component 13 can be a screw cylinder.

[0055] The five-axis cam turntable 2 is used to fix the workpiece to be processed and drive the workpiece to be processed to rotate in the horizontal direction and the vertical direction, so that the workpiece processing assembly 3 can complete the processing of the workpiece to be processed.

[0056] Reference Figures 2 to 6 The five-axis cam rotary table 2 includes a base 21, a processing table 22 arranged above the base 21, a horizontal angle adjustment structure 23 arranged between the base 21 and the processing table 22 and connected to the processing table 22, and a vertical angle adjustment structure 24 fixed on the base 21. The vertical angle adjustment structure 24 includes a main angle adjustment component 25 and a slave angle adjustment component 26 respectively fixed at both ends of the base 21 along the Y-axis direction, the horizontal angle adjustment structure 23 is arranged between the main angle adjustment component 25 and the slave angle adjustment component 26, and the angle adjustment component 25 and the slave angle adjustment component 26 are detachably connected, and the angles of the workpiece to be processed fixed on the processing table 22 in the horizontal direction and the vertical direction are adjusted by the horizontal angle adjustment structure 23 and the vertical angle adjustment structure 24, so that multiple surfaces of the workpiece to be processed can be processed.

[0057] Furthermore, the base 21 includes a square bottom plate, two second bosses 211 protruding downward from the lower end surface of the bottom plate, and two connecting bosses 212 protruding upward from the upper end surface of the bottom plate. The two second bosses 211 and the two connecting bosses 212 are distributed at both ends of the base 21 along the Y-axis direction and extend along the X-axis direction. The lower ends of the two second bosses 211 are fixed with connecting sliders 27, and the connecting sliders 27 are slidably connected to the first slide rail 12. The lower end surface of the base 21 is also provided with a first connecting seat 213 connected to the first driving component 13, and the first connecting seat 213 is arranged between the two second bosses 211. The connecting boss 212 is provided with a connecting hole, and the main angle adjustment component 25 and the secondary angle adjustment component 26 are fixed above the two connecting bosses 212 by fasteners such as screws and rivets inserted into the connecting hole.

[0058] The processing table 22 is used to limit and fix the workpiece to be processed, so as to facilitate processing of the workpiece. The upper surface of the processing table 22 is provided with a plurality of T-shaped slots 220 that are recessed downwards, and a positioning assembly (not shown) is arranged in the T-shaped slots 220, and the positioning assembly is used to fix the workpiece to be processed on the processing table 22. The processing table 22 is also provided with a plurality of limiting holes, and when the bottom of the workpiece to be processed is provided with a connecting hole, the workpiece to be processed is fixed to the processing table 22 by a fastener.

[0059] The horizontal angle adjustment structure 23 is used to drive the processing table 22 to rotate in the horizontal direction so as to adjust the angle of the workpiece to be processed. The horizontal angle adjustment structure 23 includes a first housing 230 detachably connected to the main angle adjustment component 25 and the slave angle adjustment component 26, a first rotating shaft 231 disposed in the first housing 230 along the Z-axis direction and exposed from the upper end of the first housing 230, a first motor 232 disposed in the first housing 230, and a first transmission component 233 connected to the first motor 232 and the first rotating shaft 231, respectively. Among them, the top end of the first rotating shaft 231 is fixedly connected to the processing table 22, and the first rotating shaft 231 is driven by the first motor 232 to rotate, so as to realize the rotation of the processing table 22 in the horizontal direction, thereby rotating the workpiece to be processed in the horizontal direction.

[0060] Further, the first transmission assembly 233 includes a first roller cam 2331 fixedly sleeved on the first rotating shaft 231, a first transmission shaft 2333 rotatably arranged in the first housing 230 along the X-axis direction and arranged between the first roller cam 2331 and the first motor 232, a first driving wheel 2335 fixed on the output shaft of the first motor 232, a first driven wheel 2334 fixed on the first transmission shaft 2333, and a first synchronous belt connecting the first driving wheel 2335 and the first driven wheel 2334. Among them, the first transmission shaft 2333 is meshed with the first roller cam 2331 for transmission. Specifically, the first roller cam 2331 is provided with a plurality of first needle bearings 2332 at intervals along the circumferential direction, and the first transmission shaft 2333 is provided with a first meshing portion meshed with the plurality of first needle bearings 2332. Preferably, the first transmission shaft 2333 is a worm.

[0061] In a specific embodiment of the utility model, the horizontal angle adjustment structure 23 further includes an upper bearing group 2336 and a lower bearing group 2337 respectively sleeved on the upper end and the lower end of the first rotating shaft 231, and the first roller cam 2331 is arranged between the upper bearing group 2336 and the lower bearing group 2337. The upper end plate of the first housing 230 is provided with an upper fixing hole, and the upper bearing group 2336 is arranged in the upper fixing hole and fixedly connected to the upper end plate of the first housing 230. The lower end plate of the first housing 230 is provided with a lower fixing groove, and the lower bearing group 2337 is arranged in the lower fixing hole and fixedly connected to the lower end plate of the first housing 230, and the first rotating shaft 231 and the first roller cam 2331 are limitedly fixed by the upper bearing group 2336 and the lower bearing group 2337. Preferably, the upper bearing group 2336 and the lower bearing group 2337 both include cylindrical cross roller bearings.

[0062] In a specific embodiment of the utility model, the horizontal angle adjustment structure 23 also includes two first bearing groups 2338 fixedly mounted on the first transmission shaft 2333, the two first bearing groups 2338 are respectively mounted on both ends of the first transmission shaft 2333, and the first transmission shaft 2333 is rotatably connected to the front end plate and the rear end plate of the first shell 230 through the two first bearing groups 2338.

[0063] In a specific embodiment of the present utility model, the horizontal angle adjustment structure 23 further includes a first motor plate 2320, and the first motor plate 2320 is fixedly connected to the first housing 230. The first motor plate 2320 is used to support the output shaft of the first motor 232, and the first motor plate 2320 is provided with a support opening, and the output shaft of the first motor 232 is arranged in the support opening and connected to the first motor plate 2320 through a bearing.

[0064] As a preferred embodiment, the horizontal angle adjustment structure 23 also includes a first brake group 234, which is arranged in the first shell 230 and is used to block the rotation of the first roller cam 2331 so that the first roller cam 2331 will not continue to rotate due to inertia after stopping rotation, making the adjustment and positioning angle more precise and stable.

[0065] The main angle adjustment component 25 and the secondary angle adjustment component 26 cooperate with each other to adjust the inclination angle of the workpiece to be processed in the vertical direction.

[0066] The main angle adjustment assembly 25 includes a main shell 250 that can be detachably fixed to one end of the base 21, a main rotating unit 251 arranged in the main shell 250 and connected to the horizontal angle adjustment structure 23 to drive the horizontal angle adjustment structure 23 to rotate in the vertical direction, a motor shell 252 that can be detachably fixed to the main shell 250, and a second motor 253 that is arranged in the motor shell 252 and connected to the main rotating unit 251 to drive the main rotating unit 251 to rotate.

[0067] In some embodiments, the main rotating unit 251 includes a main rotating shaft 2510 rotatably disposed in the main housing 250 along the Y-axis direction, a second roller cam 2511 fixedly sleeved on the main rotating shaft 2510, a second transmission shaft 2513 rotatably disposed in the main housing 250 along the X-axis direction, a second driving wheel 2514 fixed on the output shaft of the second motor 253, a second driven wheel 2515 fixed on the second transmission shaft 2513, and a second synchronous belt connecting the second driving wheel 2514 and the second driven wheel 2515. The second transmission shaft 2513 is disposed below the second roller cam 2511 and meshes with the second roller cam 2511 for transmission. Specifically, the second roller cam 2511 is provided with a plurality of second needle bearings 2512 at intervals along the circumferential direction, and the second transmission shaft 2513 is provided with a second meshing portion meshing with the plurality of second needle bearings 2512, and the transmission between the second transmission shaft 2513 and the second roller cam 2511 is achieved through the meshing of the second meshing portion with the plurality of second needle bearings 2512. Preferably, the second transmission shaft 2513 is a worm.

[0068] In a specific embodiment of the present invention, both ends of the main rotating shaft 2510 are fixed to the left end plate and the right end plate of the main housing 250 through the second bearing group 2516 and the third bearing group 2517. Among them, the second bearing group 2516 arranged near the horizontal angle adjustment structure 23 includes a cylindrical cross roller bearing, and the cylindrical cross roller bearing is detachably connected to the horizontal angle adjustment structure 23 through screws.

[0069] In a specific embodiment of the present utility model, the second transmission shaft 2513 is fixed to the front end plate and the rear end plate on the left end plate and the right end plate of the main housing 250 through the fourth bearing group 2518 and the fifth bearing group 2519 .

[0070] In a specific embodiment of the present invention, the second motor 253 is fixed in the motor housing 252 via a second motor plate 2530 .

[0071] As a preferred embodiment, the main angle adjustment assembly 25 also includes a second brake group 254, which is arranged in the main shell 250 and is used to block the rotation of the second roller cam 2511 so that the second roller cam 2511 will not continue to rotate due to inertia after stopping rotation, making the adjustment and positioning angle more precise and stable.

[0072] In some embodiments, the slave angle adjustment assembly 26 includes a slave housing 260 detachably fixed to the other end of the base 21 and a sixth bearing group 261 installed in the slave housing 260. A bearing hole is provided at one end of the slave housing 260 facing the horizontal angle adjustment structure 23. The sixth bearing group 261 is installed in the bearing hole and is detachably connected to the horizontal angle adjustment structure 23. Specifically, the sixth bearing group 261 includes a cylindrical cross roller bearing, which is detachably connected to the horizontal angle adjustment structure 23 by screws.

[0073] The workpiece processing assembly 3 is used to perform cutting, drilling, grinding and other processing on the workpiece to be processed mounted on the five-axis cam turntable 2.

[0074] Reference Figure 7 The workpiece processing assembly 3 includes a support seat 30 fixed on the upper surface of the base 1, a processing bracket 33 movably arranged on the support seat 30 along the Y-axis direction, and a workpiece processing unit movably arranged on the processing bracket 33 along the Z-axis direction. The workpiece processing unit is arranged above the processing table 21.

[0075] Specifically, the lower end surface of the support seat 30 has two third bosses protruding downward at both ends in the Y-axis direction, and the third bosses are fixed to the first boss 11 by pins or bolts. The upper end surface of the support seat 30 has two fourth bosses 301 protruding upward at both ends in the X-axis direction, and the two fourth bosses 301 extend along the Y-axis direction. The two fourth bosses 301 are fixed with second slide rails 32 extending along the Y-axis direction, and the lower end surface of the processing bracket 33 is provided with a second slider slidably connected to the second slide rail 32. The upper end surface of the support seat 30 is also fixed with a second driving component 31 fixedly connected to the processing bracket 33, and the second driving component 31 is arranged between the two fourth bosses 301. The second driving component 31 drives the processing bracket 33 to approach or move away from the disc tool magazine 5 along the Y-axis direction, so that the disc tool magazine 5 can install the tool on the workpiece processing unit.

[0076] The workpiece processing unit includes a connecting frame 36 extending along the X-axis direction, a processing motor 37 fixed on the top of the connecting frame 36, and a processing shaft 38 rotatably arranged in the connecting frame 36 along the Z-axis direction and with the lower end exposed from the lower surface of the connecting frame 36. The upper end of the processing shaft 38 is connected to the processing motor 37, and the lower end of the processing shaft is provided with a connecting portion connected to the tool.

[0077] Furthermore, the workpiece processing assembly 3 further includes two third slide rails 34 fixed on the end surface of the processing bracket 33 facing the five-axis cam turntable 2, and the connecting frame 36 is slidably connected to the third slide rails 34. The workpiece processing assembly 3 further includes a third driving component 35 fixed on the top of the processing bracket 33, and the third driving component 35 drives the connecting frame 36 to approach or move away from the processing table 21 in the Z-axis direction.

[0078] The second driving component 31 and the third driving component 35 can be screw cylinders.

[0079] The disc cutter 5 is used to mount the cutter on the machining spindle 38. Figures 8 to 14 The disc tool magazine includes a tool magazine body 51, a tool disc 52 rotatably connected to the tool magazine body 51, a plurality of tool sleeves 53 evenly distributed on the edge of the tool disc 52 along the circumferential direction, a tool disc motor 54 installed on the tool magazine body 51, a steering assembly 58 for driving the tool sleeve 53 to switch directions, a second transmission assembly 55 connected between the tool disc motor 54 and the tool disc 52, an ATC automatic tool changing mechanism 56 fixed on the tool magazine body 51, a tool changing arm 57 connected to the ATC automatic tool changing mechanism 56, and a machine tool control system. The ATC automatic tool changing mechanism 56 drives the tool changing arm 57 to take out the tool in the tool sleeve 53 and install it on the machining shaft 38.

[0080] The tool magazine body 51 includes a connecting disk 511 and a support ring 512 extending along the circumference of the connecting disk 511 and protruding in the axial direction of the connecting disk 511. A connecting shaft 510 is fixed at the center of the connecting disk 511. The cutter disc 52 is arranged in the support ring 512. A connecting through hole 5210 is opened at the center of the cutter disc 52. The connecting shaft 510 is arranged in the connecting through hole 5210 and is rotatably connected to the cutter disc 52 through a bearing.

[0081] The lower end of the support ring 512 is provided with a reverse cutter groove 5120 for providing space for a knife sleeve 53 to perform steering switching. The end surface of the connecting disc 511 away from the cutter disc 52 is provided with a mounting groove 5110 and a moving through groove 5111. The mounting groove 5110 is generally circular and is coaxially arranged with the connecting shaft 510. The moving through groove 5111 penetrates the connecting disc 511 in the thickness direction, and the moving through groove 5111 is interconnected with the mounting groove 5110 and the reverse cutter groove 5120. The steering assembly 58 is arranged in the mounting groove 5110 and the moving through groove 5111.

[0082] Specifically, the steering assembly 58 includes a steering cylinder 581 and a steering push plate 582 connected to the telescopic rod of the steering cylinder 81. The steering push plate 582 is provided with a steering slot 5820. The knife sleeve 53 is partially movably arranged in the steering slot 5820. The steering push plate 582 is driven by the steering cylinder 581 to move to drive the knife sleeve 53 to switch. The steering cylinder 581 is fixed in the mounting slot 5110 of the connecting disk 511 by fasteners such as screws or bolts. The steering push plate 582 is movably arranged in the moving through slot 5111. When the knife sleeve 53 with the tool to be taken rotates to the reverse knife slot 5120 with the knife disc 52, the knife sleeve 53 is partially placed in the steering slot 5820 of the steering push plate 582. At this time, the telescopic rod of the steering cylinder 581 is contracted, thereby driving the steering push plate 582 to move in the moving through slot 5111 so that the knife sleeve 53 switches in the reverse knife slot 5120.

[0083] The steering assembly 58 also includes a solenoid valve and a controllable throttle valve. The solenoid valve is fixed on the tool magazine body 51. The solenoid valve is connected to the machine tool control system. The machine tool control system instructs the solenoid valve to control the push-out and return of the steering cylinder 581. The controllable throttle valve is arranged on the connecting pipe between the steering cylinder 581 and the air source. The controllable throttle valve is connected to the machine tool control system. Under the control of the machine tool control system, the controllable throttle valve can adjust the air flow rate supplied to the steering cylinder 581, thereby controlling the running speed of the steering cylinder 581, so that the steering cylinder 581 can execute different running speeds for different tools. When the steering cylinder 581 pushes a small and light tool, the running speed of the steering cylinder 581 is faster, thereby improving the tool change speed; when the steering cylinder 581 pushes a large and heavy tool, the running speed of the steering cylinder 581 is slower, thereby avoiding the tool sleeve impacting the tool sleeve 53 clamping the heavy tool and the impact collision with the tool disc 2 and the tool magazine body 51, thereby improving the stability of the tool magazine operation.

[0084] The steering assembly 58 also includes a first sensing system for identifying the push-out and return of the steering cylinder 581 and feeding back the identification signal to the machine tool control system. The first sensing system includes a sensing frame (not shown) fixed on the steering push plate 582 and located on one side of the steering cylinder 81, and two first proximity switches (not shown) fixed on the tool magazine body 51. The two first proximity switches are arranged at intervals on one side of the sensing frame along the telescopic direction of the telescopic axis of the steering cylinder 581. When the steering cylinder 581 drives the steering push plate 582 to push the knife sleeve 53 from the horizontal state to the vertical state, the free end of the sensing frame is driven by the steering cylinder 581 and cooperates with a first proximity switch arranged close to the steering push plate 582, thereby identifying that the steering cylinder 581 is in the push-out position. At this time, a knife sleeve 53 on the knife disc 52 is in a vertical state; when the steering cylinder 581 shrinks to the original position, the free end of the sensing frame is driven by the steering cylinder 581 and cooperates with another first proximity switch arranged away from the steering push plate 582, thereby identifying that the steering cylinder 581 is in the original position.

[0085] The two first proximity switches are respectively connected to the machine tool control system so that the machine tool control system can accurately determine whether the steering cylinder 581 is in the push-out position or in the original position.

[0086] Four rectangularly distributed connecting bosses 5113 are also fixed on the end surface of the tool magazine body 51 away from the tool disc 52, and the ATC automatic tool changing mechanism 56 is fixed on the connecting bosses 5113 by fasteners such as bolts. The four connecting bosses 5113 are arranged near the mounting grooves 5110 and the moving through grooves 5111, so that the steering assembly 58 is arranged between the tool disc body 51 and the ATC automatic tool changing mechanism 56.

[0087] Reference Fig.11 The cutter disc 52 includes a rotating disc 521 and a limiting ring 522 extending along the circumference of the rotating disc 521 and extending toward the axial direction of the rotating disc 521. The limiting ring 522 is arranged parallel to the support ring 512. A plurality of cutter sleeves 53 are arranged between the limiting ring 522 and the support ring 512 and are rotatably connected to the limiting ring 522.

[0088] Specifically, a plurality of connection blocks 523 are distributed at intervals along the circumferential direction on the lower end of the end surface of the limiting ring 522 facing the support ring 512, and the connection blocks 523 are provided with shaft grooves. Fig.13The knife sleeve 53 includes a knife cup 530, two steering plates 531 and two connecting ears 533 connected as one body. The two steering plates 531 are fixed to the bottom of the knife cup 530, and a steering shaft 532 is arranged between the two steering plates 531; the two connecting ears 533 are arranged at the lower end of the knife cup 530 and protrude toward the knife disc 52, and a rotating shaft 534 is arranged between the two connecting ears 533, and the rotating shaft 534 is rotatably arranged in the shaft groove of the connecting block 523. Furthermore, a support wheel 535 is fixed to the end face of the knife cup 530 facing the support ring 512 of the knife sleeve 53, and the lower end of the support wheel 535 is supported on the top of the support ring 512.

[0089] Due to the limitation of the knife sleeve 53 by the support ring 512 and the limit ring 522, the knife sleeve 53 can be fixed relative to the knife disc 52. When the knife sleeve 53 rotates to the reverse knife groove 5120, the steering shaft 532 of the knife sleeve 53 will enter the steering slot 5820 of the steering push plate 582. When the steering push plate 582 remains stationary, the steering slot 5820 of the steering push plate 582 will continue to keep the knife sleeve 53 stationary; when it is necessary to take out the knife, the telescopic rod of the steering cylinder 581 shrinks, and the steering push plate 582 moves upward, so that the knife sleeve 53 rotates around the rotation axis 534, and rotates from the horizontal direction to the vertical direction; when the knife is used up and inserted into the knife sleeve 53, the telescopic rod of the steering cylinder 581 extends, and the steering push plate 582 moves downward, so that the knife sleeve 53 rotates around the rotation axis 534, and rotates from the vertical direction to the horizontal direction.

[0090] The second transmission assembly 55 includes an integrated camshaft 551, a driving gear (not shown), a driven gear 552 and a chain 553. The driving gear is fixed to the output shaft of the cutter motor 54, the driven gear 552 is fixed to the integrated camshaft 551, and the driven gear 552 and the driving gear are connected by the chain 553 to realize synchronous rotation.

[0091] The integrated camshaft 551 is provided with a spiral engaging rib 5510 and a fan-shaped protrusion 5511 arranged above the engaging rib 5510 , and a plurality of third needle roller bearings 520 are evenly and spacedly distributed along the circumferential direction on the end face edge of the rotating disk 521 toward the connecting disk 511 , and the plurality of third needle roller bearings 520 are engaged with the engaging rib 5510 .

[0092] The disc tool magazine further includes a support frame 541, which is fixed to the end face of the tool magazine body 51 away from the cutter disc 52 by bolts and other fasteners, and the cutter disc motor 54 is fixed to the top of the support frame 541. The tool magazine body 51 is also provided with a square through slot 5112 that penetrates the tool magazine body 51 in the thickness direction, and the support frame 541 is fixed at the square through slot 5112. The support frame 541 includes an upper bearing seat 542 and a lower bearing seat 543, which extend toward the cutter disc 52 after passing through the square through slot, and an integrated camshaft 551 is arranged between the upper bearing seat 542 and the lower bearing seat 543, and the upper end and the lower end of the integrated camshaft 551 are rotatably connected to the upper bearing seat 542 and the lower bearing seat 543 through bearings.

[0093] The disc tool magazine also includes at least one second proximity switch that cooperates with the fan-shaped protrusion 5511 to identify the stop point of the integrated camshaft 551. The second proximity switch is connected to the machine tool control system. The second proximity switch is used to identify the stop point signal of the meshing rib 5510, thereby confirming the stop position of the tool disc 52, and output the stop point signal to the machine tool control system so that the machine tool control system can control the start and stop and running speed of the tool disc motor 54. Specifically, the fan-shaped protrusion 5511 corresponds to the stop point of the meshing rib 5510. When the second proximity switch senses the fan-shaped protrusion 5511, the second proximity switch outputs a signal to the machine tool control system.

[0094] Preferably, the disc-type tool magazine is provided with two second proximity switches, wherein one second proximity switch is used to confirm the stop position of the tool disc 52 and transmit the stop point signal to the machine tool control system so that the machine tool control system can control the start and stop of the tool disc motor 54, and the other second proximity switch is used for counting.

[0095] The disc tool magazine further includes a tool magazine shield 91 , which is disposed on the outside of the tool magazine body 51 and the tool disc 52 to protect components such as the tool magazine body 51 and the tool disc 52 . The tool magazine shield 91 is provided with a transparent acrylic plate.

[0096] The disc tool magazine also includes an APB digital display control box, which is fixed on the ATC automatic tool changing mechanism 56 and connected to the machine tool control system. The APB digital display control box is preset with multiple groups of output data groups at different angles for different tool types. The APB digital display control box can be set to output dozens of control signals to the machine tool control system.

[0097] The APB digital display control box is set behind the transparent acrylic plate, through which the operating angle information and working status displayed on the APB digital display control box can be observed.

[0098] The disc-type tool magazine also includes an angle encoder fixed on the ATC automatic tool changing mechanism 56, which is electrically connected to the APB digital display control box. The angle encoder is used to identify the angular position of the tool changing arm 57 and output the identified signal to the APB digital display control box.

[0099] When changing tools in the tool magazine, the APB digital display control box identifies the angular position of the tool changing arm 57 according to the angle encoder and sends a control signal to the machine tool control system. The machine tool control system sends operation instructions to the frequency converter, solenoid valve and controllable throttle valve according to the control signal input by the APB digital display control box, the information transmitted by the second proximity switch, the signal transmitted by the first proximity switch and the tool to be replaced. After receiving the operation instruction, the frequency converter drives the motor of the ATC automatic tool changing mechanism 56 to accelerate or decelerate. After receiving the instruction, the solenoid valve and the controllable throttle valve respectively control the push, return and operation speed of the steering cylinder 581. Specifically, when exchanging conventional tools, the tool magazine runs quickly throughout the entire process; when exchanging heavier tools, the steering cylinder 581 decelerates, and after the tool changing arm 57 takes out the tool, the motor of the ATC automatic tool changing mechanism 56 starts to decelerate, thereby reducing the rotation speed of the tool changing arm 57 to avoid vibration of the mechanism due to large inertia; when exchanging large and heavy tools, the steering cylinder 581 decelerates, and after the tool changing arm 57 grabs the tool at the tool grabbing point, the motor of the ATC automatic tool changing mechanism 56 starts to decelerate until the tool exchange is completed, and the ATC automatic tool changing mechanism 56 accelerates again to quickly return to the origin, so that during the tool changing process, the pull-down, rotation and tool insertion actions will not vibrate, protecting the machine tool tool spindle hole from the impact of the tool inertia, thereby improving the stability of the disc tool magazine and extending the service life of the disc tool magazine.

[0100] When changing tools in a conventional tool magazine, the tool changing arm 57 moves to the tool locking point and pauses for about 1 to 2 seconds to wait for the spindle to release the tool, then pulls down to take out the tool, rotates and exchanges, and rises to the tool inserting point to install the tool, then pauses and waits for the spindle to lock the tool for about 1 to 2 seconds, and then the tool changing arm 57 moves back to the origin. The tool changing arm 57 pauses and waits for a long time during the entire tool changing process, which makes the tool changing efficiency of the tool magazine low, thereby affecting the operating efficiency of the machine tool.

[0101] The APB digital display control box disclosed in the present invention can be set to send a signal to the machine tool control system in advance according to the angle position of the tool change arm 57 identified by the angle encoder, so that the machine tool control system sends a signal to release the tool in advance, so that the tool release action is basically completed when the tool change arm 57 runs to the tool clamping point, and the tool can be pulled down and taken out within about 0.5 seconds. At the same time, the APB digital display control box outputs a signal to the machine tool system in advance to execute the tool locking instruction during the rotation and exchange rising process of the tool change arm 57. When the tool change arm 57 runs to the tool insertion point and the tool is loaded and waits for about 0.5 seconds, the tool locking action is completed, which shortens the waiting time of the tool change arm 57 during the tool change process, especially when the workpiece has many processing processes and requires frequent tool changes, the time saving is particularly prominent.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A five-axis CNC machine tool, characterized in that: include: Base (1); A five-axis cam turntable (2) is movably arranged above the base (1) along the X-axis direction, and comprises a processing table (22) for limiting the position of a workpiece to be processed, a horizontal angle adjustment structure (23) connected to the processing table (22) and driving the processing table (22) to rotate in the horizontal direction to adjust the angle of the workpiece to be processed in the horizontal direction, and a vertical angle adjustment structure (24) connected to the horizontal angle adjustment structure (23) and driving the horizontal angle adjustment structure (23) to rotate in the vertical direction to adjust the inclination angle of the workpiece to be processed in the vertical direction; A workpiece processing assembly (3), comprising a support seat (30) fixed to one end of the base (1) along the X-axis direction, a processing support (33) movably arranged on the support seat (30) along the Y-axis direction, and a workpiece processing unit movably arranged on the processing support (33) along the Z-axis direction, wherein the workpiece processing unit is located above the processing table (22); A tool holder (4) is fixed to one end of the base (1) along the Y-axis direction; A disc tool magazine (5), fixed on the top of the tool holder, for providing tools for the workpiece processing assembly and installing the tools on the workpiece processing unit; as well as A machine tool control system is electrically connected to the five-axis cam turntable (2), the workpiece processing assembly (3) and the disc tool magazine (5).

2. The five-axis CNC machine tool according to claim 1, characterized in that: The upper surface of the base (1) is fixed with two first slide rails (12) extending along the X-axis direction to the front end surface of the support seat (30) and a first driving component (13) connected to the five-axis cam turntable and driving the five-axis cam turntable to approach or move away from the workpiece processing assembly (3) along the X-axis direction; The five-axis cam turntable further comprises a base (21), wherein the base (21) is slidably connected to the first slide rail (12) and is connected to the first driving component (13); The vertical angle adjustment structure (24) comprises a main angle adjustment component (25) and a sub-angle adjustment component (26) fixed at two ends of the base (21) along the Y-axis direction, and the horizontal angle adjustment structure (23) is arranged between the main angle adjustment component (25) and the sub-angle adjustment component (26) and is respectively connected to the main angle adjustment component (25) and the sub-angle adjustment component (26).

3. The five-axis CNC machine tool according to claim 2, characterized in that: The main angle adjustment assembly (25) comprises a main housing (250) detachably fixed to one end of the base (21), a main rotating unit (251) disposed in the main housing (250) and connected to the horizontal angle adjustment structure (23) to drive the horizontal angle adjustment structure (23) to rotate in a vertical direction, a motor housing (252) detachably fixed to the main housing (250), and a second motor (253) disposed in the motor housing (252) and connected to the main rotating unit (251) to drive the main rotating unit (251) to operate.

4. The five-axis CNC machine tool according to claim 3, characterized in that: The main rotating unit (251) comprises a main rotating shaft (2510) rotatably arranged in the main housing (250) along the Y-axis direction, a second roller cam (2511) fixedly sleeved on the main rotating shaft (2510), a second transmission shaft (2513) rotatably arranged in the main housing (250) along the X-axis direction, a second driving wheel (2514) fixed on the output shaft of the second motor (253), a second driven wheel (2515) fixed on the second transmission shaft (2513), and a second synchronous belt connecting the second driving wheel (2514) and the second driven wheel (2515), wherein the second transmission shaft (2513) is arranged below the second roller cam (2511) and meshes with the second roller cam (2511) for transmission.

5. The five-axis CNC machine tool according to claim 2, characterized in that: The slave angle adjustment component (26) comprises a slave housing (260) detachably fixed to the other end of the base (21), and a bearing hole is provided at one end of the slave housing (260) facing the horizontal angle adjustment structure (23); The angle adjustment component (26) further comprises a sixth bearing group (261), wherein the sixth bearing group (261) is installed in the bearing hole and is detachably connected to the horizontal angle adjustment structure (23).

6. The five-axis CNC machine tool according to claim 1, characterized in that: The horizontal angle adjustment structure (23) comprises a first shell (230) detachably connected to the vertical angle adjustment structure (24), a first rotating shaft (231) arranged in the first shell (230) along the Z-axis direction and connected to the processing table (22), a first motor (232) arranged in the first shell (230), and a first transmission assembly (233) respectively connected to the first motor (232) and the first rotating shaft (231); The first transmission assembly (233) comprises a first roller cam (2331) fixed on the first rotating shaft (231), a first transmission shaft (2333) rotatably arranged in the first housing (230) along the X-axis direction, a first driving wheel (2335) fixed on the output shaft of the first motor (232), a first driven wheel (2334) fixed on the first transmission shaft (2333), and a first synchronous belt connecting the first driving wheel (2335) and the first driven wheel (2334), and the first transmission shaft (2333) is meshed with the first roller cam (2331) for transmission.

7. The five-axis CNC machine tool according to any one of claims 1 to 6, characterized in that: The workpiece processing unit comprises a connecting frame (36) extending along the X-axis direction, a processing motor (37) fixed on the top of the connecting frame (36), and a processing shaft (38) rotatably arranged in the connecting frame (36) along the Z-axis direction and with its lower end exposed from the lower surface of the connecting frame (36), the upper end of the processing shaft (38) being connected to the processing motor (37), and the lower end of the processing shaft (38) being provided with a connecting portion connected to a tool.

8. The five-axis CNC machine tool according to any one of claims 1 to 6, characterized in that: The disc tool magazine comprises a tool magazine body (51), a tool disc (52) rotatably connected to the tool magazine body (51), a plurality of tool sleeves (53) evenly distributed on the circumferential edge of the tool disc (52), a tool disc motor (54) fixed to the tool magazine body (51) and driving the tool disc (52) to rotate, a steering assembly (58) for driving the tool sleeve (53) to switch directions, an ATC automatic tool changing mechanism (56) fixed to the tool magazine body (51), and a tool changing arm (57) connected to the ATC automatic tool changing mechanism (56), wherein the ATC automatic tool changing mechanism (56) drives the tool changing arm (57) to take out the tool in the tool sleeve (53) and install it on the workpiece processing unit.

9. The five-axis CNC machine tool according to claim 8, characterized in that: The disc tool magazine further comprises a second transmission assembly (55), and the cutter disc motor (54) is connected to the cutter disc (52) via the second transmission assembly (55) and drives the cutter disc (52) to rotate; The second transmission assembly (55) comprises an integrated camshaft (551), a driving gear fixed on the output shaft of the cutter disc motor (54), a driven gear (552) fixed on the integrated camshaft (551), and a chain (553) connecting the driving gear and the driven gear (552); the integrated camshaft (551) is provided with a spiral meshing rib (5510); the cutter disc (52) is provided with a plurality of third needle bearings (520) evenly and spacedly distributed along the circumference; the third needle bearings (520) mesh with the meshing rib (5510).

10. The five-axis CNC machine tool according to claim 8, characterized in that: The steering assembly (58) comprises a steering cylinder (581) fixed on the tool magazine body (51) and a steering push plate (582) connected to the telescopic rod of the steering cylinder (581); a controllable throttle valve is installed on the pipeline connecting the steering cylinder (581) and the air source; The disc tool magazine also includes an APB digital display control box and an angle encoder fixed on the ATC automatic tool changing mechanism (56); the controllable throttle valve and the APB digital display control box are connected to the machine tool control system; and the ATC automatic tool changing mechanism (56), the tool disc motor (54) and the steering cylinder (581) can execute different operating speeds for different tools under the control of the machine tool control system.

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