Numerical control five-axis cam rotary table

Abstract

The utility model discloses a numerical control five-axis cam rotary table which comprises a base, a rotary table body, a horizontal rotary assembly driving the rotary table body to rotate and an inclined rotary assembly driving the horizontal rotary assembly to rotate so as to enable a workpiece to be inclined, and the inclined rotary assembly comprises a driving rotary assembly and a driven rotary assembly. The driving rotating assembly and the driven rotating assembly are fixed to the two ends of the base respectively, and the horizontal rotating assembly is rotationally arranged between the driving rotating assembly and the driven rotating assembly. The horizontal rotating assembly comprises a rotating shaft box body, a first output shaft arranged in the rotating shaft box body and connected with the rotating table, a rotating driving motor arranged in the rotating shaft box body, a first transmission unit connected with the rotating driving motor and the first output shaft, and a first braking unit arranged in the rotating shaft box body. The two rotating shafts of the numerical control five-axis cam turntable are provided with the brake units, so that the overall stability of a five-axis machine tool is improved, and the positioning and machining precision of parts can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of five-axis processing equipment, in particular to a numerically controlled five-axis cam turntable. Background Art

[0002] A CNC turntable needs to be installed on the machine tool workbench of the CNC machining center, and then the workpiece is clamped on the CNC turntable. The machine tool can process the workpiece at any angle and process the linked curved surface. In the current workpiece processing technology, in many cases, the workpiece needs to be frequently rotated to a certain angle for processing, and the same workpiece needs to be processed repeatedly with different tools. During the positioning process, the release reaction speed of the brake device of the CNC turntable directly affects the processing efficiency, and the repeated positioning accuracy of the CNC turntable will directly affect the finished product accuracy of the workpiece.

[0003] Taking the common four-axis and five-axis rotary tables of machining centers and machine tool spindles as examples, their drives include worm gears, planetary reducers, harmonic reducers, roller cam reducers and other transmission forms. However, these structures are all driven by two or more mechanical interlocking connections, so the connection between the two machines will produce resistance and interlocking force. Under long-term use conditions, these frictional interlocking forces will cause the interlocking mechanical parts to wear, resulting in a larger gap, which will lead to low accuracy and inaccurate rotational positioning over time. Most of these structures do not have active braking structures installed, but rely on the worm to drive the worm wheel. However, the principle that the worm wheel cannot drive the worm relies on hardware interlocking hardware to achieve disguised braking, or the principle of planetary wheel deceleration, to achieve mechanical wear interlocking braking or deceleration movement of the turntable. These are all last resort solutions.

[0004] At the same time, there are two types of braking devices for the first output shaft on the common five-axis turntable of the machining center. One is normally open when the power (gas) is off, that is, braking is achieved when the power (gas) is on; the other is normally closed when the power (gas) is off, that is, braking is achieved when the power (gas) is off. The normally open mode when the power (gas) is off is generally used when the driving force of the first output shaft is too small, and external hydraulic oil or compressed air is used to brake and clamp the first output shaft, so that the machine tool can achieve heavy cutting. However, the normally open mode when the power (gas) is off cannot solve the need to brake when the machine tool suddenly loses power. Therefore, if the machine tool suddenly loses power during operation or cannot be powered on during transportation, or the machine tool may lose power due to human error during processing and assembly, the magnetic torque of the direct-drive torque motor against gravity suddenly disappears at the moment of power failure, causing the turntable to suddenly fall under the action of gravity, causing left and right shaking, damaging the machine tool or injuring personnel, thereby causing huge economic losses.

[0005] Existing five-axis machining centers, such as cradle-type five-axis machines, generally include an A-axis rotating device and a C-axis rotating device, wherein the A-axis rotating device can drive the C-axis rotating device to rotate, and the C-axis rotating device mainly includes a rotating spindle, a motor that drives the rotating spindle to rotate, and a mounting platform connected to the rotating spindle. In order to increase the rotation speed of the rotating spindle, a transmission assembly is also arranged between the rotating spindle and the motor. Generally, the rotating spindle, the motor and the transmission assembly are all arranged in a casing. The motor will generate a large amount of heat and vibrate continuously during operation. Since the rotating spindle, the motor and the transmission assembly are installed in the same cavity, the transmission assembly and components such as the rotating spindle will be affected by the heat and vibration generated by the motor, resulting in reduced stability, reduced motion accuracy, and reduced service life. Utility Model Content

[0006] The utility model aims to provide a numerically controlled five-axis cam turntable to solve the technical problems mentioned in the background technology.

[0007] In order to achieve the above-mentioned utility model object, the technical solution adopted by the utility model is: a CNC five-axis cam turntable, comprising a base, a turntable for clamping a workpiece, a horizontal rotation component driving the turntable to rotate, and a tilting rotation component driving the horizontal rotation component to rotate to tilt the workpiece, the tilting rotation component comprising an active rotation component and a driven rotation component, the active rotation component and the driven rotation component are respectively fixed at two ends of the base, and the horizontal rotation component is rotatably arranged between the active rotation component and the driven rotation component;

[0008] The horizontal rotation assembly includes a rotating shaft housing, a first output shaft disposed in the rotating shaft housing and connected to the rotating table, a rotating drive motor disposed in the rotating shaft housing, a first transmission unit connecting the rotating drive motor and the first output shaft, and a first brake unit disposed in the rotating shaft housing, wherein an upper mounting cavity and a lower mounting cavity communicating with each other are constructed in the rotating shaft housing, the first output shaft is disposed in the upper mounting cavity and the lower mounting cavity and extends out of the rotating shaft housing, the first transmission unit is mounted in the upper mounting cavity, and the rotating drive motor is mounted outside the upper mounting cavity;

[0009] The lower mounting cavity is in the shape of an inverted bowl, the first brake unit is arranged in the lower mounting cavity, the first brake unit comprises a first brake flange seat sleeved on the first output shaft and connected to the upper cavity wall of the lower mounting cavity by bolts, a first brake follower plate fixed on the first output shaft, a first brake stationary plate fixedly connected to the first brake flange seat and partially located below the first brake follower plate, a first brake pressure disc movably arranged in the first brake flange seat and located below the first brake stationary plate, and a first hydraulic driving component driving the first brake pressure disc to move up and down, when braking, the first hydraulic driving component drives the first brake pressure disc to move upward to push the first brake stationary plate and the first brake follower plate to overlap on the upper cavity wall of the lower mounting cavity;

[0010] A first axial hole extending in the axial direction is provided in the first output shaft, the rotating table includes a rotating worktable fixedly connected to the top of the first output shaft and an oil circuit distributor arranged in the first axial hole, the top surface of the oil circuit distributor is flush with the top surface of the rotating worktable, the oil circuit distributor has a plurality of oil circuits extending in the axial direction, the oil circuits are connected to a hydraulic clamp detachably connected to the rotating worktable, the lower end of the oil circuit distributor is detachably connected to an oil circuit connecting plate, the oil circuit connecting plate is located below the first brake flange seat, a plurality of oil circuit channels connected to the oil circuit are provided in the oil circuit connecting plate, the rotating shaft housing includes a bottom cover plate, the bottom cover plate is arranged below the oil circuit connecting plate, the bottom cover plate is provided with an opening for an oil supply pipe to pass through, and the oil pipe is connected to the oil circuit channel.

[0011] In some embodiments, the first brake flange seat is provided with a first pressure disc groove, and the first brake pressure disc is movably disposed in the first pressure disc groove up and down;

[0012] The first hydraulic drive component includes a first piston chamber formed on the outer wall of the lower mounting chamber, a first piston rod movably disposed in the first piston chamber, and a first hydraulic oil circuit connecting the first piston chamber and the first pressure plate groove;

[0013] The first hydraulic oil circuit includes a first oil circuit channel opened in the first brake flange seat and connected to the first pressure plate groove, and a second oil circuit channel opened in the cavity wall of the lower mounting cavity, and the second oil circuit channel is connected to the first piston cavity and the second oil circuit channel respectively.

[0014] In some embodiments, the first brake unit also includes a brake sensing component, which includes a first sensing guide seat and a first sensing bracket fixed to the outer wall of the lower mounting cavity by bolts, at least two first proximity switches, and a first spring arranged in the first piston cavity and sleeved on the first piston rod, the first sensing guide seat is provided with a first movable through hole, the first piston rod moves through the first movable through hole, a first sensing wheel is provided at the exposed portion of the first piston rod, two first proximity switches are fixed on the first sensing bracket at intervals along the axial direction of the first piston rod, and the two first proximity switches respectively cooperate with the first sensing wheel to identify the brake signal and feed the brake signal back to the control system.

[0015] In some embodiments, the first brake unit also includes a sealing component, which includes a first oil seal, a second oil seal and a seal at least arranged on the outer diameter side of the first brake pressure disc, the first oil seal is arranged between the first output shaft and the first brake flange seat and is located below the first brake driven pad, and the second oil seal is arranged between the first output shaft and the lower mounting cavity and is located above the first brake driven pad.

[0016] In some embodiments, the first brake unit further includes a first elastic return member for returning the first brake stationary pad to its original position, the inner cavity wall of the lower mounting cavity is provided with a first return spring mounting hole, the first return spring mounting hole is located above the first brake stationary pad, the first elastic return member is arranged in the first return spring mounting hole and abuts against the upper surface of the first brake stationary pad;

[0017] The first elastic return member is a spring.

[0018] In some embodiments, the first transmission unit includes a first driving gear connected to the rotation drive motor, a first driven gear meshing with the first driving gear, a first cam assembly fixedly connected to the first driven gear, and a first needle bearing fixed to the first output shaft and meshing with the first cam assembly for transmission;

[0019] The first cam assembly includes a first integral camshaft and a first double-row bearing and a second double-row bearing respectively mounted on both ends of the first integral camshaft. A first cam drive spiral curve extending along an axial spiral is provided on the outer periphery of the first integral camshaft. The first double-row bearing and the second double-row bearing are respectively arranged on both sides of the first cam drive spiral curve and connected to the rotating shaft housing. The first cam drive spiral curve is meshed with the first needle roller bearing for transmission.

[0020] In some embodiments, the horizontal rotation assembly also includes a second deep groove ball bearing mounted on the first output shaft and arranged below the first needle roller bearing, a turntable bearing mounted on the first output shaft and arranged above the first needle roller bearing, and a first oil seal seat mounted on the first output shaft and arranged above the turntable bearing, wherein a first skeleton oil seal is configured in the first oil seal seat.

[0021] In some embodiments, the active rotation assembly includes a tilting shaft housing, a motor housing detachably connected to the tilting shaft housing, a second output shaft disposed in the tilting shaft housing and connected to the rotating shaft housing, a rotating drive motor installed in the motor housing, a second transmission unit connecting the second output shaft and the rotating drive motor, and a second brake unit disposed in the tilting shaft housing, a brake cavity is disposed in the tilting shaft housing at one end away from the rotating shaft housing, and the second brake unit is disposed in the brake cavity;

[0022] The second brake unit includes a second brake flange seat mounted on the second output shaft and connected to the right cavity wall of the brake chamber by bolts, a second brake follower pad fixed on the second output shaft, a second brake stationary pad fixedly connected to the second brake flange seat and partially located on the left side of the second brake follower pad, a second brake pressure disc movably arranged in the second brake flange seat and located on the left side of the second brake stationary pad, and a second hydraulic driving component that drives the second brake pressure disc to move left and right. When braking, the second hydraulic driving component drives the second brake pressure disc to move rightward to push the second brake stationary pad and the second brake follower pad to overlap on the right cavity wall of the brake chamber.

[0023] In some embodiments, a second pressure plate groove is provided in the second brake flange seat, and the second brake pressure plate is movably disposed in the second pressure plate groove;

[0024] The second hydraulic drive component includes a second piston chamber provided on the tilt shaft housing, a second piston rod movably disposed in the second piston chamber, and a second hydraulic oil circuit connecting the second piston chamber and the second pressure plate groove;

[0025] The second hydraulic oil circuit includes a first hydraulic channel opened in the tilt shaft housing and connected to the second piston chamber, and a second hydraulic channel opened in the second brake flange seat, and the second hydraulic channel is connected to the first hydraulic channel and the second pressure plate groove respectively.

[0026] In some embodiments, the second brake unit also includes a brake sensing component, which includes a second sensing guide seat and a second sensing bracket fixed to the tilt shaft box by bolts, at least two second proximity switches, and a second spring arranged in the second piston chamber and sleeved on the second piston rod, the second sensing guide seat is provided with a second movable through hole, the second piston rod moves through the second movable through hole, a second sensing wheel is provided at the exposed portion of the second piston rod, two second proximity switches are fixed on the second sensing bracket at intervals along the axial direction of the second piston rod, and the two second proximity switches respectively cooperate with the second sensing wheel to identify the brake signal and feed the brake signal back to the 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 CNC five-axis cam turntable of the utility model is provided with brake units at the ends of the first output shaft and the second output shaft respectively. The brake units include a brake follower plate fixedly mounted on the output shaft, a brake stationary plate and a brake seat fixedly mounted on the housing, a brake pressure disc arranged in the brake seat and a hydraulic drive component for driving the brake pressure disc to move. The brake follower plate and the brake stationary plate are fitted together by the pressure generated by the hydraulic drive component, so as to brake the output shaft, and the output shaft cannot rotate. The parts clamped on the rotating workbench on the output shaft can be positioned, and the cutting forces in all directions during the processing of the parts can be withstood. The output shaft will not rotate either, so the positioning and processing accuracy of the parts can be ensured. At the same time, the turntable will not fall suddenly under the action of gravity, so as to avoid damage to the machine tool or injury to personnel.

[0029] The rotating shaft box body of the utility model is constructed with an upper mounting cavity and a lower mounting cavity that are interconnected. The first output shaft, the transmission assembly and the first brake unit are installed in the upper mounting cavity or the lower mounting cavity, and the motor is installed outside the mounting cavity. The motor is isolated from components such as the transmission assembly through the mounting cavity to prevent the heat and vibration generated when the motor is running from affecting the transmission assembly, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a three-dimensional CNC five-axis cam turntable Figure 1 ;

[0031] Figure 2 The utility model is a three-dimensional CNC five-axis cam turntable Figure 2 ;

[0032] Figure 3 for Figure 1 The cross-sectional view along the AA direction;

[0033] Figure 4 for Figure 1The cross-sectional view along the DD direction;

[0034] Figure 5 for Figure 4 Enlarged view of the middle E part;

[0035] Figure 6 It is an exploded view of the components of the driving rotating platform and the horizontal rotating assembly of the utility model;

[0036] Figure 7 It is an exploded view of some parts of the first transmission unit of the utility model;

[0037] Figure 8 This is a three-dimensional diagram of a CNC five-axis cam turntable of the utility model with some components omitted;

[0038] Fig. 9 for Figure 8 The cross-sectional view along the BB direction;

[0039] Fig.10 for Figure 8 Cross-sectional view along CC direction

[0040] Fig.11 It is an exploded view of the components of the active rotating assembly of the utility model;

[0041] Fig.12 It is an exploded view of the parts of the driven rotating assembly of the utility model. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Reference Figure 1 and 2 The present invention provides a CNC five-axis cam turntable, including a base 1, a turntable 2 for clamping a workpiece, a horizontal rotation component 3 for driving the turntable 2 to rotate, and a tilting rotation component for driving the horizontal rotation component 3 to rotate to tilt the workpiece, the tilting rotation component including an active rotation component 4 and a driven rotation component 5, the active rotation component 4 and the driven rotation component 5 are respectively fixed at two ends of the base 1, and the horizontal rotation component 3 is rotatably arranged between the active rotation component 4 and the driven rotation component 5.

[0049] Reference Figures 3 to 7 The horizontal rotating assembly 3 includes a rotating shaft housing 31, a first output shaft 32 arranged in the rotating shaft housing 31 and connected to the rotating table 2, a rotating driving motor 30 arranged in the rotating shaft housing 31, a first transmission unit 33 connecting the rotating driving motor 30 and the first output shaft 32, and a first braking unit 34 configured in the rotating shaft housing 31.

[0050] The rotating shaft housing 31 includes a generally rectangular mounting housing and two connecting parts 313 arranged on both sides of the mounting housing. An upper mounting cavity 315 and a lower mounting cavity 316 that are interconnected are formed inside the mounting housing, and a shaft mounting through hole is provided on the top plate of the mounting housing. The first output shaft 32 is installed in the upper mounting cavity 315 and the lower mounting cavity 316 and extends out of the mounting housing from the shaft mounting through hole. The first transmission unit 33 is installed in the upper mounting cavity 315, and the rotating drive motor 30 is installed outside the upper mounting cavity 315. A motor mounting plate 300 is also provided inside the rotating shaft housing 31, and the rotating drive motor 30 is fixed on the motor mounting plate 30.

[0051] The lower installation cavity 316 is substantially in the shape of an inverted bowl, and the first brake unit 34 is disposed in the lower installation cavity 316 .

[0052] The first brake unit 34 is used to brake the first output shaft 3. The first brake unit 34 includes a first brake flange seat 341 which is sleeved on the first output shaft 32 and connected to the upper cavity wall of the lower mounting cavity 316 by bolts, a first brake follower plate 344 fixed on the first output shaft 32, a first brake stationary plate 343 which is fixedly connected to the first brake flange seat 341 and partially located below the first brake follower plate 344, a first brake pressure disc 342 which is movably arranged in the first brake flange seat 341 and located below the first brake stationary plate 343, and a first hydraulic driving component which drives the first brake pressure disc 342 to move up and down. When braking, the first hydraulic driving component drives the first brake pressure disc 342 to move upward to push the first brake stationary plate 343 and the first brake follower plate 344 to overlap on the upper cavity wall of the lower mounting cavity 316.

[0053] Reference Fig. 9 The first brake flange seat 341 is provided with a first pressure plate groove 3410, and the first brake pressure plate 342 is movably arranged in the first pressure plate groove 3410. The first hydraulic driving component includes a first piston chamber 3160 formed on the outer wall of the lower mounting chamber 316, a first piston rod 345 movably arranged in the first piston chamber 3160, and a first hydraulic oil circuit connecting the first piston chamber 3160 and the first pressure plate groove 3410. The first hydraulic oil circuit includes a first oil passage 3411 opened in the first brake flange seat 341 and connected to the first pressure plate groove 3410, and a second oil passage 3461 opened in the cavity wall of the lower mounting chamber 316, and the second oil passage 3461 is connected to the first piston chamber 3160 and the second oil passage 3461 respectively.

[0054] Furthermore, an oil pressure inlet and an oil pressure outlet are also provided on the cavity wall of the lower mounting cavity 316 , and the oil pressure inlet and the oil pressure outlet are respectively connected to the first piston cavity 3160 .

[0055] The first brake unit 34 also includes a first brake sensing component, which includes a first sensing guide seat 346 and a first sensing bracket 347 fixed to the outer wall of the lower mounting cavity 316 by bolts, at least two first proximity switches 348, and a first spring arranged in the first piston cavity 3160 and sleeved on the first piston rod 345. The first sensing guide seat 346 is provided with a first movable through hole, and the first piston rod 345 moves through the first movable through hole. A first sensing wheel is provided at the exposed portion of the first piston rod 345, and two first proximity switches 348 are fixed on the first sensing bracket 347 at intervals along the axial direction of the first piston rod 345. The two first proximity switches 348 respectively cooperate with the first sensing wheels to identify the brake signal and feed the brake signal back to the control system.

[0056] The first brake unit 34 also includes a sealing component, which includes a first oil seal 340, a second oil seal 349 and a seal at least arranged on the outer diameter side of the first brake pressure disc 342. The first oil seal 340 is arranged between the first output shaft 32 and the first brake flange seat 341 and is located below the first brake driven plate 344. The second oil seal 349 is arranged between the first output shaft 32 and the lower mounting cavity 316 and is located above the first brake driven plate 344.

[0057] In some embodiments, the first brake unit 34 further includes a first elastic return member for returning the first brake stationary plate 343. A first return spring installation hole 3162 is provided on the inner wall of the lower installation cavity 316. The first return spring installation hole 3162 is located above the first brake stationary plate 343. The first elastic return member is disposed in the first return spring installation hole 3162 and abuts against the upper surface of the first brake stationary plate 343. Preferably, the first elastic return member can be a spring.

[0058] Reference Figure 6 The first transmission unit 33 includes a first driving gear 331 connected to the rotation drive motor 30, a first driven gear 332 meshing with the first driving gear 331, a first cam assembly fixedly connected to the first driven gear 332, and a first needle bearing 330 fixed on the first output shaft 32 and meshing with the first cam assembly for transmission.

[0059] Reference Figure 7The first cam assembly includes a first integrated camshaft 333 and a first double-row bearing 335 and a second double-row bearing 337 respectively sleeved on both ends of the first integrated camshaft 333, wherein a first cam driving spiral curve 334 extending along an axial spiral is arranged on the outer periphery of the first integrated camshaft 333, the first cam driving spiral curve 334 and the first integrated camshaft 333 are an integral structure, the first cam driving spiral curve 334 is meshed with the first needle roller bearing 330 for transmission, the first double-row bearing 335 and the second double-row bearing 337 are respectively arranged on both sides of the first cam driving spiral curve 334 and are connected to the rotating shaft housing 31 by bolts, and the first double-row bearing 335 and the second double-row bearing 337 respectively have an angular contact ball bearing inner ring and a tapered roller bearing inner ring.

[0060] The first driven gear 332 is sleeved on the first integrated camshaft 333 and is located outside the second double-row bearing 337 .

[0061] Furthermore, the first cam assembly also includes two first gaskets 336 and two second gaskets 338. Two annular sealing grooves are arranged at intervals on the outer sides of the first double-row bearing 335 and the second double-row bearing 337. The two first gaskets 336 are respectively arranged in the two annular sealing grooves of the first double-row bearing 335, and the two second gaskets 338 are respectively arranged in the two annular sealing grooves of the second double-row bearing 337.

[0062] The horizontal rotating assembly 3 also includes a second deep groove ball bearing 35 sleeved on the first output shaft 32 and arranged below the first needle roller bearing 330, a turntable bearing 36 sleeved on the first output shaft 32 and arranged above the first needle roller bearing 330, and a first oil seal seat 37 sleeved on the first output shaft 32 and arranged above the turntable bearing 36. A first skeleton oil seal 38 is arranged in the first oil seal seat 37. The first oil seal seat 37 cooperates with the first skeleton oil seal 38 to seal and prevent oil leakage.

[0063] Furthermore, the horizontal rotation assembly 3 further includes an origin sensing switch 39, which is fixed to the outer wall of the upper mounting cavity 315 through a switch bracket, and extends through the cavity wall of the upper mounting cavity 315 into the upper mounting cavity 315. A sensing element is provided on the roller of the first needle bearing 330 located in front of the origin sensing switch 39 when stationary, and the sensing element cooperates with the origin sensing switch 39 to sense, thereby identifying the origin of the horizontal rotation assembly 3, and feeding back the identification signal to the control system.

[0064] Furthermore, the bottom plate, front side plate and rear side plate of the installation box are all provided with installation and debugging ports, and the installation box also includes a bottom cover plate 311, a front cover plate 310 and a rear cover plate 312, and the bottom cover plate 311, the front cover plate 310 and the rear cover plate 312 are respectively installed at three installation and debugging ports, and the front cover plate 310 is opened to install, debug and overhaul the origin sensing switch 39, the first brake sensing component and the rotary drive motor 30 installed in the installation box, and the front cover plate 310 is also provided with an oil filling pipe connected to the oil pressure inlet and an oil outlet pipe connected to the oil pressure outlet. The rear cover plate 312 is opened to install and overhaul the motor mounting plate 30, the first driving gear 331 and the first driven gear 332, and the bottom cover plate 311 is opened to install and overhaul the first brake flange seat 341, the oil circuit connecting plate 350, the connecting oil pipe, etc.

[0065] Furthermore, a first axial hole extending axially is provided in the first output shaft 32, and the rotary table 2 includes a rotary table 21 fixed to the top of the first output shaft 32 by bolts and an oil circuit distributor 22 arranged in the first axial hole, the top surface of the oil circuit distributor 22 is flush with the top surface of the rotary table 21, and the oil circuit distributor 22 is provided with a plurality of oil circuits 220 extending from the top surface to the bottom surface, and the top surface of the rotary table 21 is provided with a plurality of limit grooves 210 with an inverted T-shaped cross-section, and the hydraulic clamp for clamping the workpiece is detachably mounted on the rotary table 21 through the limit grooves 210, and when the hydraulic clamp is mounted on the rotary table 21, the oil filling port of the hydraulic clamp is connected with the oil circuit 220, and the hydraulic clamp is clamped on the workpiece by filling oil into the hydraulic clamp through the oil circuit distributor 22, and when the workpiece is processed and needs to be removed, the oil in the hydraulic clamp is released through the oil circuit distributor 22 to loosen the hydraulic clamp.

[0066] The hydraulic clamp can be specifically set according to the shape of the workpiece to be processed. The hydraulic clamp is a prior art and will not be described in detail here.

[0067] The lower end of the oil circuit distributor 22 is detachably connected with an oil circuit connection plate 350, which is located below the first brake flange seat 341 and above the bottom cover plate 311. The oil circuit connection plate 350 is provided with a plurality of oil circuit channels connected with the oil circuit 220. The bottom cover plate 311 is provided with an opening for the oil pipe to pass through, and the oil pipe is connected with the oil circuit channel.

[0068] Reference Fig.10 and Fig.11 The active rotating component 4 includes a tilting shaft housing 41, a motor housing 42 detachably connected to the tilting shaft housing 41, a second output shaft 43 arranged in the tilting shaft housing 41 and connected to a connecting portion 313 of the rotating shaft housing 31, a rotating drive motor 40 installed in the motor housing 42, a second transmission unit 44 connecting the second output shaft 43 and the rotating drive motor 40, and a second braking unit 45 arranged in the tilting shaft housing 41.

[0069] The tilt shaft box body 41 is provided with a mounting countersunk hole on the box plate facing the motor box body 42 , and a rotating motor mounting plate 400 is connected to the mounting countersunk hole by bolts, and the rotating drive motor 40 is fixed on the rotating motor mounting plate 400 .

[0070] A brake chamber 411 is provided at one end of the tilt shaft housing 41 away from the tilt shaft housing 41, and a second brake unit 45 is arranged in the brake chamber 411. The second brake unit 45 includes a second brake flange seat 451 sleeved on the second output shaft 43 and connected to the right chamber wall of the brake chamber 411 by bolts, a second brake follower plate 454 fixed on the second output shaft 43, a second brake stationary plate 453 fixedly connected to the second brake flange seat 451 and partially located on the left side of the second brake follower plate 454, a second brake pressure disc 452 movably arranged in the second brake flange seat 451 and located on the left side of the second brake stationary plate 453, and a second hydraulic driving component driving the second brake pressure disc 452 to move left and right. When braking, the second hydraulic driving component drives the second brake pressure disc 452 to move right to push the second brake stationary plate 453 and the second brake follower plate 454 to overlap on the right chamber wall of the brake chamber 411.

[0071] In some embodiments, a second pressure plate groove is provided in the second brake flange seat 451, and the second brake pressure plate 452 is movably provided in the second pressure plate groove. The second hydraulic drive component includes a second piston chamber 4110 provided on the tilt shaft housing 41, a second piston rod 445 movably provided in the second piston chamber 4110, and a second hydraulic oil circuit connecting the second piston chamber 4110 and the second pressure plate groove. The second hydraulic oil circuit includes a first hydraulic channel 4111 provided in the tilt shaft housing 41 and communicating with the second piston chamber 4110, and a second hydraulic channel 4510 provided in the second brake flange seat 451, and the second hydraulic channel 4510 is respectively communicated with the first hydraulic channel 4111 and the second pressure plate groove.

[0072] In some embodiments, the second brake unit 45 also includes a brake sensing component, which includes a second sensing guide seat 456 and a second sensing bracket 458 fixed to the tilt shaft box 41 by bolts, at least two second proximity switches 457, and a second spring 459 arranged in the second piston chamber 4110 and sleeved on the second piston rod 445. The second sensing guide seat 456 is provided with a second movable through hole, and the second piston rod 445 moves through the second movable through hole. A second sensing wheel is provided at the exposed portion of the second piston rod 445, and two second proximity switches 457 are fixed on the second sensing bracket 458 at intervals along the axial direction of the second piston rod 445. The two second proximity switches 457 respectively cooperate with the second sensing wheels to identify the brake signal and feed the brake signal back to the control system.

[0073] The second brake unit 45 also includes a second sealing component, which includes a third oil seal 450, a fourth oil seal and a seal at least arranged on the outer diameter side of the second brake pressure disc 452, the fourth oil seal is arranged between the second output shaft 43 and the second brake flange seat 451 and is located on the right side of the second brake driven plate 454, and the third oil seal 450 is arranged between the second output shaft 43 and the brake chamber 411 and is located on the left side of the second brake driven plate 454.

[0074] The second transmission unit 44 includes a second needle roller bearing 445 fixedly sleeved on the middle part of the second output shaft 43, a second cam assembly meshing with the second needle roller bearing 445, a second driven gear 443 connected to the second cam assembly, and a second driving gear 444 connected to the rotary drive motor 40, and the second driven gear 443 and the second driving gear 444 meshing with each other for transmission.

[0075] The second cam assembly includes a second integrated camshaft 441 and a third double row bearing and a fourth double row bearing respectively mounted on both ends of the second integrated camshaft 441, wherein a second cam drive spiral curve 442 extending in a circumferential spiral direction is arranged on the outer periphery of the second integrated camshaft 441, the second cam drive spiral curve 442 and the second integrated camshaft 441 are an integral structure, the third double row bearing and the fourth double row bearing are respectively arranged at both ends of the second cam drive spiral curve 442 and are respectively connected to the tilt shaft housing 41 by bolts, and a third gasket and a fourth gasket are respectively arranged on the outer sides of the third double row bearing and the fourth double row bearing.

[0076] The second driven gear 443 is sleeved on the second integrated camshaft 441 and is located on the outer side of the fourth double-row bearing.

[0077] The active rotating component 4 also includes a fourth deep groove ball bearing 46, a second turntable bearing 47, a second oil seal seat 49 and a second skeleton oil seal 48, wherein the fourth deep groove ball bearing 46 is sleeved on the second output shaft 43 and is located on the right side of the second needle roller bearing 445, the second turntable bearing 47 is sleeved on the second output shaft 43 and is located on the left side of the second needle roller bearing 445, the second oil seal seat 49 is sleeved on the second output shaft 43 and is located on the left side of the second turntable bearing 47, the second turntable bearing 47 is fixed in the tilting shaft box 41 by bolts, and the second skeleton oil seal 48 is installed in the second oil seal seat 49, and cooperates with the second oil seal seat 49 to seal and prevent oil leakage.

[0078] Furthermore, the active rotating component 4 also includes a head bracket 6, which is used to fix the optical scale reading head. The head bracket 6 is fixed on the tilting shaft box 41 by bolts and is arranged on the right side of the second brake flange seat 451.

[0079] Reference Fig.12The driven rotating assembly 5 includes a driven housing 51, a driven rotating shaft 52 arranged in the driven housing 51 and connected to another connecting portion 313 of the rotating shaft housing 31, a third turntable bearing 53 fixedly mounted on the driven rotating shaft 52, a third oil seal seat 54 mounted on the driven rotating shaft 52 and arranged on the right side of the third turntable bearing 53, a third skeleton oil seal 55 installed in the third oil seal seat 54, and a bearing 57 mounted on the driven rotating shaft 52 and located on the left side of the third turntable bearing 53. The third turntable bearing 53 is fixedly connected to the driven housing 51 by bolts, and a gasket 56 is also arranged between the third turntable bearing 53 and the third oil seal seat 54.

[0080] The driven housing 51 is also provided with an oil joint 511 and a wire outlet hole 510 .

[0081] The workflow of this utility model is as follows:

[0082] 1. Install the hydraulic clamp on the rotary table 21, and inject oil into the hydraulic clamp through the oil circuit connecting plate 350 and the oil circuit distributor 22, so that the hydraulic clamp clamps the main workpiece;

[0083] 2. Start the tool motor to process the workpiece. When different surfaces of the workpiece need to be processed, the rotary drive motor 30 and the rotation drive motor 40 are automatically started under the control of the control system to make the workpiece fixed on the rotary table 21 rotate horizontally and tilted, so that different surfaces of the workpiece can be processed;

[0084] 3. When the workpiece does not need to continue to rotate, the control system controls the rotation drive motor 30 to stop running, and at the same time, under the control of the control system, the first hydraulic drive component drives the first brake pressure plate 342 to move upward to push the first brake stationary plate 343 and the first brake driven plate 344 to overlap on the upper cavity wall of the lower mounting cavity 316, so as to achieve rapid braking of the first output shaft 32;

[0085] 4. When the workpiece does not need to be tilted, the control system controls the rotating drive motor 40 to stop running, and at the same time, the control system controls the downward second hydraulic drive component to make the second hydraulic drive component drive the second brake pressure plate to move to the right to push the second brake stationary pad 453 and the second brake driven pad 454 to overlap on the right cavity wall of the brake cavity 411 to achieve rapid braking of the second output shaft 43.

[0086] 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 numerically controlled five-axis cam turntable, comprising a base (1), a turntable (2) for clamping a workpiece, a horizontal rotation component (3) for driving the turntable (2) to rotate, and a tilting rotation component for driving the horizontal rotation component (3) to rotate so as to tilt the workpiece, wherein the tilting rotation component comprises an active rotation component (4) and a driven rotation component (5), wherein the active rotation component (4) and the driven rotation component (5) are respectively fixed at two ends of the base (1), and the horizontal rotation component (3) is rotatably arranged between the active rotation component (4) and the driven rotation component (5), characterized in that: The horizontal rotation component (3) comprises a rotation shaft housing (31), a first output shaft (32) arranged in the rotation shaft housing (31), a rotation drive motor (30) arranged in the rotation shaft housing (31), a first transmission unit (33) connecting the rotation drive motor (30) and the first output shaft (32), and a first brake unit (34) arranged in the rotation shaft housing (31); the rotation shaft housing (31) is provided with an upper mounting cavity (315) and a lower mounting cavity (316) which are interconnected; the first output shaft (32) is arranged in the upper mounting cavity (315) and the lower mounting cavity (316) and extends out of the rotation shaft housing (31); the first transmission unit (33) is installed in the upper mounting cavity (315); and the rotation drive motor (30) is installed outside the upper mounting cavity (315); The lower mounting cavity (316) is in the shape of an inverted bowl, the first brake unit (34) is arranged in the lower mounting cavity (316), the first brake unit (34) comprises a first brake flange seat (341) sleeved on the first output shaft (32) and connected to the upper cavity wall of the lower mounting cavity (316) by bolts, a first brake follower plate (344) fixed on the first output shaft (32), a first brake stationary plate (343) fixedly connected to the first brake flange seat (341) and partially located below the first brake follower plate (344), a first brake pressure disc (342) movably arranged in the first brake flange seat (341) and located below the first brake stationary plate (343), and a first hydraulic driving component driving the first brake pressure disc (342) to move up and down. When braking, the first hydraulic driving component drives the first brake pressure disc (342) to move upward to push the first brake stationary plate (343) and the first brake follower plate (344) to overlap on the upper cavity wall of the lower mounting cavity (316); A first axial hole extending in the axial direction is arranged in the first output shaft (32); the rotary table (2) comprises a rotary table (21) fixedly connected to the top of the first output shaft (32) and an oil circuit distributor (22) arranged in the first axial hole; the top surface of the oil circuit distributor (22) is flush with the top surface of the rotary table (21); the oil circuit distributor (22) has a plurality of oil circuits (220) extending in the axial direction; the oil circuits (220) are connected to a hydraulic clamp detachably connected to the rotary table (21); The lower end of the oil circuit distributor (22) is detachably connected to an oil circuit connecting plate (350), the oil circuit connecting plate (350) is located below the first brake flange seat (341), and a plurality of oil circuit channels connected to the oil circuit (220) are arranged in the oil circuit connecting plate (350). The rotating shaft housing (31) includes a bottom cover plate (311), the bottom cover plate (311) is arranged below the oil circuit connecting plate (350), and the bottom cover plate (311) is provided with an opening for an oil pipe to pass through, and the oil pipe is connected to the oil circuit channels.

2. The CNC five-axis cam turntable according to claim 1, characterized in that: The first brake flange seat (341) is provided with a first pressure plate groove (3410), and the first brake pressure plate (342) is movably arranged in the first pressure plate groove (3410) up and down; The first hydraulic drive component comprises a first piston chamber (3160) formed on the outer wall of the lower mounting chamber (316), a first piston rod (345) movably arranged in the first piston chamber (3160), and a first hydraulic oil circuit connecting the first piston chamber (3160) and the first pressure plate groove (3410); The first hydraulic oil circuit includes a first oil circuit channel (3411) opened in the first brake flange seat (341) and connected to the first pressure plate groove (3410), and a second oil circuit channel (3461) opened in the cavity wall of the lower mounting cavity (316), and the second oil circuit channel (3461) is connected to the first piston cavity (3160) and the second oil circuit channel (3461) respectively.

3. The CNC five-axis cam turntable according to claim 2, characterized in that: The first brake unit (34) also includes a brake sensing component, which includes a first sensing guide seat (346) and a first sensing bracket (347) fixed to the outer wall of the lower mounting cavity (316) by bolts, at least two first proximity switches (348) and a first spring arranged in the first piston cavity (3160) and sleeved on the first piston rod (345), the first sensing guide seat (346) is provided with a first movable through hole, the first piston rod (345) moves through the first movable through hole, the first piston rod (345) is provided with a first sensing wheel at a portion exposed to the outside, two first proximity switches (348) are fixed on the first sensing bracket (347) at intervals along the axial direction of the first piston rod (345), and the two first proximity switches (348) respectively cooperate with the first sensing wheel to identify the brake signal and feed the brake signal back to the control system.

4. The CNC five-axis cam turntable according to claim 1, characterized in that: The first brake unit (34) also includes a sealing component, which includes a first oil seal (340), a second oil seal (349) and a seal at least arranged on the outer diameter side of the first brake pressure disc (342), the first oil seal (340) is arranged between the first output shaft (32) and the first brake flange seat (341) and is located below the first brake driven plate (344), and the second oil seal (349) is arranged between the first output shaft (32) and the lower mounting cavity (316) and is located above the first brake driven plate (344).

5. The CNC five-axis cam turntable according to claim 1, characterized in that: The first brake unit (34) also includes a first elastic return member for returning the first brake stationary plate (343); a first return spring mounting hole (3162) is provided on the inner wall of the lower mounting cavity (316); the first return spring mounting hole (3162) is located above the first brake stationary plate (343); the first elastic return member is arranged in the first return spring mounting hole (3162) and abuts against the upper surface of the first brake stationary plate (343); The first elastic return member is a spring.

6. The CNC five-axis cam turntable according to claim 1, characterized in that: The first transmission unit (33) comprises a first driving gear (331) connected to the rotary drive motor (30), a first driven gear (332) meshing with the first driving gear (331), a first cam assembly fixedly connected to the first driven gear (332), and a first needle roller bearing (330) fixed on the first output shaft (32) and meshing with the first cam assembly for transmission; The first cam assembly comprises a first integral camshaft (333) and a first double-row bearing (335) and a second double-row bearing (337) respectively sleeved on both ends of the first integral camshaft (333); a first cam driving spiral curve (334) extending in an axial spiral is arranged on the outer periphery of the first integral camshaft (333); the first double-row bearing (335) and the second double-row bearing (337) are respectively arranged on both sides of the first cam driving spiral curve (334) and connected to the rotating shaft housing (31); the first cam driving spiral curve (334) is meshed with the first needle roller bearing (330) for transmission.

7. The numerically controlled five-axis cam turntable according to claim 6, characterized in that: The horizontal rotation component (3) further comprises a second deep groove ball bearing (35) sleeved on the first output shaft (32) and arranged below the first needle roller bearing (330), a turntable bearing (36) sleeved on the first output shaft (32) and arranged above the first needle roller bearing (330), and a first oil seal seat (37) sleeved on the first output shaft (32) and arranged above the turntable bearing (36), wherein a first skeleton oil seal (38) is arranged in the first oil seal seat (37).

8. The CNC five-axis cam turntable according to claim 1, characterized in that: The active rotation assembly (4) comprises a tilting shaft housing (41), a motor housing (42) detachably connected to the tilting shaft housing (41), a second output shaft (43) arranged in the tilting shaft housing (41) and connected to the rotating shaft housing (31), a rotation drive motor (40) installed in the motor housing (42), a second transmission unit (44) connecting the second output shaft (43) and the rotating drive motor (40), and a second brake unit (45) arranged in the tilting shaft housing (41); a brake chamber (411) is arranged at one end of the tilting shaft housing (41) away from the rotating shaft housing (31), and the second brake unit (45) is arranged in the brake chamber (411); The second brake unit (45) comprises a second brake flange seat (451) sleeved on the second output shaft (43) and connected to the right cavity wall of the brake cavity (411) by bolts, a second brake follower plate (454) fixed on the second output shaft (43), a second brake stationary plate (453) fixedly connected to the second brake flange seat (451) and partially located on the left side of the second brake follower plate (454), a second brake pressure disc (452) movably arranged in the second brake flange seat (451) and located on the left side of the second brake stationary plate (453), and a second hydraulic driving component driving the second brake pressure disc (452) to move left and right. When braking, the second hydraulic driving component drives the second brake pressure disc (452) to move rightward to push the second brake stationary plate (453) and the second brake follower plate (454) to overlap on the right cavity wall of the brake cavity (411).

9. The CNC five-axis cam turntable according to claim 8, characterized in that: A second pressure plate groove is arranged in the second brake flange seat (451), and the second brake pressure plate (452) is movably arranged in the second pressure plate groove. The second hydraulic drive component comprises a second piston chamber (4110) arranged on the tilt shaft housing (41), a second piston rod (445) movably arranged in the second piston chamber (4110), and a second hydraulic oil circuit connecting the second piston chamber (4110) and the second pressure plate groove; The second hydraulic oil circuit includes a first hydraulic channel (4111) opened in the tilt shaft housing (41) and connected to the second piston chamber (4110), and a second hydraulic channel (4510) opened in the second brake flange seat (451), and the second hydraulic channel (4510) is connected to the first hydraulic channel (4111) and the second pressure plate groove respectively.

10. The CNC five-axis cam turntable according to claim 9, characterized in that: The second brake unit (45) also includes a brake sensing component, which includes a second sensing guide seat (456) and a second sensing bracket (458) fixed to the tilt shaft housing (41) by bolts, at least two second proximity switches (457), and a second spring (459) arranged in the second piston chamber (4110) and sleeved on the second piston rod (445), the second sensing guide seat (456) is provided with a second movable through hole, the second piston rod (445) moves through the second movable through hole, and the second piston rod (445) is provided with a second sensing wheel at a portion exposed to the outside, two second proximity switches (457) are fixed on the second sensing bracket (458) at intervals along the axial direction of the second piston rod (445), and the two second proximity switches (457) respectively cooperate with the second sensing wheel to identify the brake signal and feed the brake signal back to the control system.

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