CN108772715B - Simple pendulum direct drive type AC pendulum head - Google Patents
Simple pendulum direct drive type AC pendulum head Download PDFInfo
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- CN108772715B CN108772715B CN201810863887.5A CN201810863887A CN108772715B CN 108772715 B CN108772715 B CN 108772715B CN 201810863887 A CN201810863887 A CN 201810863887A CN 108772715 B CN108772715 B CN 108772715B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a single-pendulum direct-drive type AC swinging head, which comprises a main shaft box, an electric main shaft, a cylindrical upper box body, a cylindrical lower box body, an A shaft part and a C shaft part, wherein the upper box body, the lower box body, the A shaft part and the C shaft part are arranged up and down; the electric spindle of the AC swing head is arranged in the spindle box, the A shaft and the C shaft of the electric spindle are driven by a torque motor, the eccentricity of the whole structure is low, the transposition of the C shaft is smoother, meanwhile, the lower box body of the A shaft part of the AC swing head and the bearing of the A shaft turntable are arranged on the same side of the spindle box, and the other side of the spindle box is not provided with redundant design, so that the electric spindle can be close to a workpiece for processing, and the swing head has larger processing space and better processing manufacturability.
Description
Technical Field
The invention relates to an AC swing head of a numerical control machining center, in particular to a single-pendulum direct-drive AC swing head.
Background
Five-axis linkage machining is always pursued by numerical control machining centers. With the rapid development of the die industry and the aerospace industry, the requirement on a five-axis linkage processing machine tool is increasing, the five-axis head adopting a torque motor as an A/C axis indexing driving force can realize linkage processing, and the high-speed and high-precision processing can be realized by adopting a high-power high-speed motorized spindle, so that the five-axis linkage processing machine tool is a pet in the processing market.
For an AC swing head adopting torque motor direct drive, there are two forms of single swing and double swing, the double swing AC swing head is provided with torque motor driving mechanisms at two sides of an A shaft, and the A shaft driving force is large; the simple pendulum AC pendulum is equipped with moment motor drive mechanism only in A axle one side, and its A axle drive power is less than the double pendulum AC pendulum, but its electric main shaft is nearer to the processing side, and the process space is bigger, and the practicality is better, has bigger process range, can effectively save the occupation space of pendulum.
However, most of the conventional AC swinging heads driven by a torque motor have rough structures, so that the assembly precision and the processing precision of the AC swinging heads are difficult to ensure, and the reliability is poor. For example, CN204700579U discloses a torque motor direct-drive type AC swinging head, which belongs to the field of machine tool transmission devices, and is a double-swing AC swinging head, and the double-swing AC swinging head comprises an a shaft, a C shaft, an a shaft shell, a C shaft shell and an electric spindle, wherein the a shaft is vertically arranged with the C shaft, the a shaft shell and the C shaft shell are fixedly connected, the C shaft is connected on the C shaft shell through a first bearing, the C shaft torque motor is fixed on the C shaft through a first connecting device, the outer side of the a shaft is provided with an a shaft center shaft, the a shaft is connected on the a shaft center shaft through a second bearing, the inner side of the a shaft shell is fixedly provided with the a shaft torque motor, the a shaft torque motor is connected with the a shaft through a second connecting device, the outer side of the a shaft is connected with a spindle sleeve through a screw, and the electric spindle is fixed in the spindle sleeve. Although the AC pendulum simplifies the pendulum transmission structure to a certain extent and reduces transmission links, the relevant components are simply combined, the assembly precision of the components is difficult to ensure, and in addition, the patent does not disclose the structure such as the clamping mode, the wiring mode and the like of the a-axis and the C-axis of the AC pendulum, so that as a complete AC pendulum, whether the overall structural dimension of the AC pendulum is compact and reasonable enough cannot be determined, and the machining precision of the AC pendulum is difficult to ensure.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the simple pendulum direct-drive type AC swinging head which has the advantages of compact structure, space saving, reasonable structural design, convenient processing and high assembly precision and processing precision.
The technical scheme adopted for solving the technical problems is as follows: a single pendulum direct drive type AC swinging head comprises a main shaft box, an electric main shaft, a cylindrical upper box body, a cylindrical lower box body, an A shaft part and a C shaft part, wherein the upper box body, the lower box body, the A shaft part, the A shaft brake disc and the A shaft pneumatic clamping system are arranged up and down, the central line of the A shaft part is vertical to the central line of the electric main shaft, the central line of the C shaft part is parallel to the central line of the electric main shaft, the electric main shaft is vertically arranged in the main shaft box, the A shaft part is arranged in the lower box body and is arranged at one side of the main shaft box body, the C shaft part is arranged in the upper box body, the A shaft part comprises an A shaft turntable bearing, an A shaft turntable bearing seat, an A shaft moment motor, an A shaft motor seat, an A shaft brake disc and an A shaft pneumatic clamping system, the inner ring of the A shaft turntable bearing is fixed on the A shaft turntable bearing seat, the outer ring of the A shaft turntable bearing is fixed on the lower box body, the left end of the A-axis turntable bearing seat is fixed on one side of the spindle box, the A-axis brake disc is sleeved and positioned on the A-axis turntable bearing seat and positioned on the right side of the A-axis turntable bearing, the A-axis pneumatic clamping system is fixed on the lower box body and positioned on the outer side of the A-axis brake disc, the stator of the A-axis torque motor is fixed on the A-axis motor seat, the A-axis motor seat is fixed on the lower box body and positioned on the right side of the A-axis pneumatic clamping system, an A-axis connecting ring is arranged between the A-axis brake disc and the rotor of the A-axis torque motor, the A-axis connecting ring is sleeved on the A-axis turntable bearing seat, the inner side and the outer side of the A-axis connecting ring are respectively fixed on the A-axis disc and the rotor of the A-axis torque motor, the right side of the rotor of the A-axis torque motor is provided with a protective sleeve, the protective sleeve is fixed on the A-axis motor seat, and the right side of the lower box body is provided with a protective cover; the C shaft part comprises a C shaft rotary table bearing, a C shaft torque motor, a C shaft motor seat, a C shaft brake shaft, a C shaft pneumatic clamping system, a transition disc and a transition plate, wherein the C shaft brake shaft is fixed at the top end of a lower box body, the C shaft brake shaft is fixedly connected with the upper end of a rotor of the C shaft torque motor through a C shaft connecting ring, the rotor of the C shaft torque motor is sleeved on the outer side of the C shaft brake shaft, a stator of the C shaft torque motor is fixed on the C shaft motor seat, the upper box body is the C shaft motor seat, the transition plate is fixedly connected with the lower side of the stator of the C shaft torque motor, the transition plate is fixedly connected with the lower side of the transition plate, the outer ring of the C shaft rotary table bearing is fixedly connected with the transition disc, the rotor of the C shaft torque motor is sleeved on the outer side of the lower box body, the C shaft pneumatic clamping system is arranged on the C shaft clamping system, and the C shaft is fixedly connected with the top end cover of the C shaft motor seat.
The simple pendulum direct-drive type AC pendulum head has the advantages of compact structure, space saving, reasonable structural design, convenience in processing, and high assembly precision and processing precision. The electric spindle of the AC swing head is arranged in the spindle box, the A shaft and the C shaft of the electric spindle are driven by a torque motor, the eccentricity of the whole structure is low, the transposition of the C shaft is smoother, meanwhile, the lower box body of the A shaft part of the AC swing head and the bearing of the A shaft turntable are arranged on the same side of the spindle box, and the other side of the spindle box is not provided with redundant design, so that the electric spindle can be close to a workpiece for processing, and the swing head has larger processing space and better processing manufacturability.
Preferably, the a-axis turntable bearing seat comprises a first step shaft and a second step shaft which are integrally arranged, the first step shaft is arranged on the left side of the second step shaft, the outer diameter of the first step shaft is larger than that of the second step shaft, the inner ring of the a-axis turntable bearing is fixed on the first step shaft, the a-axis brake disc is connected on the second step shaft in a centering way, and the a-axis connecting ring is connected on the second step shaft in a centering way; the inner hole of the lower box body comprises a first step hole, a second step hole and a third step hole which are coaxially arranged from left to right and are communicated with each other, the aperture of the first step hole is sequentially increased, the outer ring of the A-axis turntable bearing is arranged in the first step hole, the A-axis pneumatic clamping system is arranged in the second step hole, and the A-axis motor seat is arranged in the third step hole. The A-axis turntable bearing seat is designed to comprise a first step shaft and a second step shaft which are integrally arranged and sequentially reduced in outer diameter, and an inner hole of the lower box body is designed to comprise a first step hole, a second step hole and a third step hole which are coaxially arranged and communicated from left to right and sequentially increased in aperture, so that the A-axis turntable bearing seat and the lower box body are convenient to process, the A-axis turntable bearing seat and the lower box body can be clamped for one time respectively to finish processing, repeated clamping in the processing process is avoided, concentricity of the first step shaft and the second step shaft and concentricity and processing precision of the first step hole, the second step hole and the third step hole are ensured, and further assembly precision of parts matched with the step shafts and the step holes is ensured, and therefore, the integral assembly precision and the processing precision of the swinging head are greatly improved. In addition, the integrated design of the bearing seat of the A-axis turntable can ensure the strength of parts and bring convenience to assembly and adjustment.
Further, the A-axis turntable bearing seat is also integrally provided with a third step shaft, the third step shaft is arranged on the right side of the second step shaft and the outer diameter of the third step shaft is smaller than that of the second step shaft, the third step shaft is connected with an A-axis encoder in a centering manner, the A-axis encoder is fixed on an A-axis encoder seat, and the A-axis encoder seat is fixed on an A-axis motor seat. The design of the third step shaft can ensure the assembly precision of the A-axis encoder on the basis of the first step shaft and the second step shaft. The A-axis encoder can identify and read the angle position of the A-axis in real time, and the accuracy of the rotation angle of the A-axis is ensured.
Preferably, the C-axis brake shaft comprises a fourth step shaft, a fifth step shaft, a sixth step shaft and a seventh step shaft which are coaxially arranged from bottom to top and have sequentially reduced outer diameters, the fourth step shaft is connected with the top end of the lower box body in a centering manner, the C-axis pneumatic clamping system is arranged on the outer side of the fifth step shaft, the sixth step shaft is connected with the rotor of the C-axis torque motor in a centering manner, the C-axis connecting ring is sleeved on the outer side of the seventh step shaft, and the C-axis connecting ring is connected with the C-axis brake shaft in a centering manner. Similar to the bearing seat of the A-axis turntable, the C-axis brake shaft is designed to comprise a fourth step shaft, a fifth step shaft, a sixth step shaft and a seventh step shaft which are coaxially arranged from bottom to top and have the outer diameters reduced in sequence, so that the C-axis brake shaft is convenient to clamp and process once, concentricity of each step shaft is ensured, and the assembly precision and the processing precision of the swinging head are further improved. In addition, the integrated design of the C-axis brake shaft can ensure the strength of parts and bring convenience to assembly and adjustment.
Further, the C-axis brake shaft is also integrally provided with an eighth step shaft and a ninth step shaft, the eighth step shaft is integrally arranged on the upper side of the seventh step shaft, the ninth step shaft is integrally arranged on the upper side of the eighth step shaft, the outer diameters of the seventh step shaft, the eighth step shaft and the ninth step shaft are sequentially reduced, the eighth step shaft is centered and connected with a C-axis encoder, and the C-axis encoder is reversely fixed on the lower side of the upper end cover. The C-axis encoder can identify and read the angle position of the C-axis in real time, and the accuracy of the rotation angle of the A-axis is ensured. The design of the eighth step shaft can ensure the assembly precision of the C-axis encoder.
Preferably, the inner side of the upper end cover is connected with a sealing cover in a centering manner, the sealing cover is arranged above the C-axis encoder, a deep groove ball bearing is arranged between the sealing cover and the ninth step shaft, the outer ring of the deep groove ball bearing is pressed by a pressing plate, and the pressing plate is fixed on the sealing cover. The deep groove ball bearing plays an auxiliary supporting and positioning role on the C-axis brake shaft, and the reliability of the integral structure of the swinging head is further improved.
Preferably, the bearing seat of the A-axis turntable is internally provided with a transverse first wiring hole, the lower box body is internally provided with a transverse second wiring hole and a longitudinal third wiring hole, the C-axis brake shaft is internally provided with a longitudinal fourth wiring hole and a longitudinal fifth wiring hole, the second wiring hole, the third wiring hole, the fourth wiring hole and the fifth wiring hole are sequentially communicated, and the first wiring hole, the second wiring hole, the third wiring hole, the fourth wiring hole and the fifth wiring hole form wiring holes of cables and functional pipes required by the electric spindle. The cables and the functional pipes required by the electric spindle pass through the first wiring hole, the second wiring hole, the third wiring hole and the fourth wiring hole in sequence, and are thrown out from the fifth wiring hole. The pipe running mode is simple in design and high in reliability, and is beneficial to ensuring the compactness of the whole structure of the AC swing head.
Preferably, the transition disc is a circular transition disc, the transition plate is a square transition plate, and the side length of the transition plate is larger than the diameter of the transition disc. The transition disc and the transition plate adopt the design, and the mounting hole between the transition disc and the transition plate can be designed outside the diameter of the transition disc, so that the installation and the disassembly of the swing head are convenient. In addition, when the swinging head needs scraping precision, the upper surface of the transition plate can be directly scraped, and the scraping device is very convenient.
Preferably, the lower box body and the C-axis brake shaft are both made of aviation aluminum alloy. So as to further lighten the overall weight of the AC swing head and enable the A axis and the C axis to have larger acceleration when rotating.
Compared with the prior art, the invention has the following advantages: the simple pendulum direct-drive type AC pendulum head disclosed by the invention has the advantages of compact structure, space saving, reasonable structural design, convenience in processing and high assembly precision and processing precision. The electric spindle of the AC swing head is arranged in the spindle box, the A shaft and the C shaft of the electric spindle are driven by a torque motor, the eccentricity of the whole structure is low, the transposition of the C shaft is smoother, meanwhile, the lower box body of the A shaft part of the AC swing head and the bearing of the A shaft turntable are arranged on the same side of the spindle box, and the other side of the spindle box is not provided with redundant design, so that the electric spindle can be close to a workpiece for processing, and the swing head has larger processing space and better processing manufacturability.
Drawings
FIG. 1 is a schematic longitudinal section of a simple pendulum direct drive AC pendulum head according to the present invention;
fig. 2 is a side view of a simple pendulum direct drive AC pendulum head of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The simple pendulum direct drive type AC pendulum head of embodiment 1, as shown in fig. 1 and 2, comprises a spindle box 1, an electric spindle 11, a cylindrical upper and lower box 2 arranged up and down, an a-axis part and a C-axis part, wherein the center line of the a-axis part is perpendicular to the center line of the electric spindle 11, the center line of the C-axis part is parallel to the center line of the electric spindle 11, the electric spindle 11 is vertically installed in the spindle box 1, the a-axis part is arranged in the lower box 2 and on one side of the spindle box 1, the C-axis part is arranged in the upper box, the a-axis part comprises an a-axis turntable bearing 21, an a-axis turntable bearing seat 22, an a-axis torque motor, an a-axis motor seat 25, an a-axis brake disc 26, an a-axis pneumatic clamping system 27, the inner ring of the a-axis turntable bearing 21 is fixed on the a-axis turntable bearing seat 22, the outer ring of the a-axis turntable bearing 21 is fixed on the lower box 2, the left end of the A-axis turntable bearing pedestal 22 is fixed on one side of the spindle box 1, the A-axis brake disc 26 is sleeved and positioned on the A-axis turntable bearing pedestal 22 and positioned on the right side of the A-axis turntable bearing 21, the A-axis pneumatic clamping system 27 is fixed on the lower box body 2 and positioned on the outer side of the A-axis brake disc 26, the stator 23 of the A-axis torque motor is fixed on the A-axis motor seat 25, the A-axis motor seat 25 is fixed on the lower box body 2 and positioned on the right side of the A-axis pneumatic clamping system 27, an A-axis connecting ring 28 is arranged between the A-axis brake disc 26 and the rotor 24 of the A-axis torque motor, the A-axis connecting ring 28 is sleeved on the A-axis turntable bearing pedestal 22, the inner side and the outer side of the A-axis connecting ring 28 are respectively fixed on the A-axis brake disc 26 and the rotor 24 of the A-axis torque motor, the right side of the rotor 24 of the A-axis torque motor is provided with a protective sleeve 29, the protective sleeve 29 is fixed on the A-axis motor seat 25, the protection cover 29 is used for preventing the rotor 24 of the A-axis torque motor from being touched by cables, rubber pipes and the like, the right side of the lower box body 2 is provided with the protection cover 20, and the protection cover 20 is used for preventing key parts such as the A-axis torque motor and the like from entering scrap iron and cooling liquid; the C shaft part comprises a C shaft rotary table bearing 31, a C shaft torque motor, a C shaft motor seat 34, a C shaft brake shaft 35, a C shaft pneumatic clamp system 36, a transition disc 37 and a transition plate 38, wherein the C shaft brake shaft 35 is fixed at the top end of the lower box body 2, the C shaft brake shaft 35 is fixedly connected with the upper end of a rotor 33 of the C shaft torque motor through a C shaft connecting ring 39, the rotor 33 of the C shaft torque motor is sleeved on the outer side of the C shaft brake shaft 35, a stator 32 of the C shaft torque motor is fixed on the C shaft motor seat 34, the upper box body is the C shaft motor seat 34, the transition plate 38 is connected with the lower side of the stator 32 of the C shaft torque motor in a centering manner, a transition plate 38 is fixed on a machine tool ram (not shown in the drawing), the transition disc 37 is in a circular transition disc 37, the transition plate 38 is a square transition plate 38, the side length of the transition plate 38 is larger than the diameter of the transition disc 37, the outer ring of the C shaft bearing 31 is fixed on the transition disc 37, the C shaft bearing 31 is fixed on the C shaft motor seat 34, the lower end of the C shaft rotary table 31 is fixed on the inner side of the C shaft seat 36, the pneumatic clamp system is fixed on the upper end of the C shaft 35, the end cover 30 is arranged on the inner side of the C shaft seat 30, and the pneumatic clamp system is stretched out of the C shaft seat 30, and the pneumatic clamp system is fixed on the upper end of the C shaft 35.
In embodiment 1, the a-axis turntable bearing block 22 includes a first step shaft 41 and a second step shaft 42 integrally provided, the first step shaft 41 is provided on the left side of the second step shaft 42 and has an outer diameter larger than that of the second step shaft 42, the inner ring of the a-axis turntable bearing 21 is fixed on the first step shaft 41, the a-axis brake disc 26 is connected to the second step shaft 42 in a centered manner, and the a-axis connecting ring 28 is connected to the second step shaft 42 in a centered manner; the inner hole of the lower box body 2 comprises a first step hole 51, a second step hole 52 and a third step hole 53 which are coaxially arranged and communicated from left to right and have sequentially increased pore diameters, the outer ring of the A-axis turntable bearing 21 is arranged in the first step hole 51, the A-axis pneumatic clamping system 27 is arranged in the second step hole 52, and the A-axis motor seat 25 is arranged in the third step hole 53; the C-axis brake shaft 35 includes a fourth step shaft 61, a fifth step shaft 62, a sixth step shaft 63 and a seventh step shaft 64 which are coaxially arranged from bottom to top and have sequentially reduced outer diameters, the fourth step shaft 61 is centrally connected with the top end of the lower case 2, the C-axis pneumatic clamping system 36 is mounted on the outer side of the fifth step shaft 62, the sixth step shaft 63 is centrally connected with the rotor 33 of the C-axis torque motor, the C-axis connecting ring 39 is sleeved on the outer side of the seventh step shaft 64, and the C-axis connecting ring 39 is centrally connected with the C-axis brake shaft 35.
In embodiment 1, a first transverse wire hole 71 is formed in the bearing seat 22 of the a-axis turntable, a second transverse wire hole 72 and a third longitudinal wire hole 73 are formed in the lower case 2, a fourth longitudinal wire hole 74 and a fifth wire hole 75 are formed in the c-axis brake shaft 35, the second wire hole 72, the third wire hole 73, the fourth wire hole 74 and the fifth wire hole 75 are sequentially communicated, and the first wire hole 71, the second wire hole 72, the third wire hole 73, the fourth wire hole 74 and the fifth wire hole 75 form wire and function tube wire routes required by the electric spindle 11.
In example 1, the lower case 2 and the C-axis brake shaft 35 are both made of an aviation aluminum alloy.
In the invention, the A-axis pneumatic clamping system 27 and the C-axis pneumatic clamping system 36 are both adopted in the prior art, wherein the A-axis pneumatic clamping system 27 is used for clamping the A-axis brake disc 26, and the C-axis pneumatic clamping system 36 is used for clamping the C-axis brake shaft 35. In embodiment 1, the pneumatic clamping system 27 of the a-axis and the pneumatic clamping system 36 of the C-axis are outsourcing parts, and a spring skin cavity is arranged in the pneumatic clamping system, and when the cylinder body outside the spring skin cavity is inflated and pressurized, the spring skin cavity is stretched, so that the clamping function is realized.
The difference between the simple pendulum direct drive AC pendulum head of embodiment 2 and embodiment 1 is that in embodiment 2, the a-axis turntable bearing seat 22 is further integrally provided with a third step shaft 43, the third step shaft 43 is disposed on the right side of the second step shaft 42 and has an outer diameter smaller than that of the second step shaft 42, the third step shaft 43 is connected with an a-axis encoder 44 in a centering manner, the a-axis encoder 44 is fixed on the a-axis encoder seat 45, and the a-axis encoder seat 45 is fixed on the a-axis motor seat 25; the C-axis brake shaft 35 is also integrally provided with an eighth step shaft 65 and a ninth step shaft 66, the eighth step shaft 65 is integrally arranged on the upper side of the seventh step shaft 64, the ninth step shaft 66 is integrally arranged on the upper side of the eighth step shaft 65, the outer diameters of the seventh step shaft 64, the eighth step shaft 65 and the ninth step shaft 66 are sequentially reduced, the eighth step shaft 65 is connected with a C-axis encoder 67 in a centering manner, and the C-axis encoder 67 is reversely fixed on the lower side of the upper end cover 9; the inner side of the upper end cover 9 is centrally connected with a sealing cover 8, the sealing cover 8 is arranged above the C-axis encoder 67, a deep groove ball bearing 81 is arranged between the sealing cover 8 and the ninth step shaft 66, the outer ring of the deep groove ball bearing 81 is pressed by a pressing plate 82, and the pressing plate 82 is fixed on the sealing cover 8. The A-axis encoder 44 is arranged at the right end of the A-axis turntable bearing seat 22, and the C-axis encoder 67 is arranged at the upper end of the C-axis brake shaft 35, so that the position is reasonable and the installation and adjustment are convenient.
The A shaft and the C shaft of the single pendulum direct drive type AC pendulum head are driven by a torque motor, the eccentricity of the whole structure is low, the transposition of the C shaft is smoother, meanwhile, the lower box body 2 of the A shaft part of the AC pendulum head and the bearing 21 of the A shaft turntable are arranged on the same side of the spindle box 1, and the other side of the spindle box 1 is not provided with redundant design, so that the electric spindle 11 can be close to a workpiece for processing, and the pendulum head has larger processing space and better processing manufacturability.
Claims (8)
1. The utility model provides a simple pendulum directly drives formula AC balance head, includes headstock, electric main shaft, the upper and lower box of tube-shape that sets up from top to bottom, A axle part and C axle part, the central line of A axle part with the central line of electric main shaft perpendicular, the central line of C axle part with the central line of electric main shaft parallel, electric main shaft vertically install in the headstock, A axle part set up in the lower box and set up one side of headstock, C axle part set up in the upper box, its characterized in that: the A-axis part comprises an A-axis turntable bearing, an A-axis turntable bearing seat, an A-axis torque motor, an A-axis motor seat, an A-axis brake disc and an A-axis pneumatic clamping system, wherein an inner ring of the A-axis turntable bearing is fixed on the A-axis turntable bearing seat, an outer ring of the A-axis turntable bearing seat is fixed on the lower box body, the left end of the A-axis turntable bearing seat is fixed on one side of the spindle box, the A-axis brake disc is sleeved and positioned on the A-axis turntable bearing seat and positioned on the right side of the A-axis turntable bearing seat, the A-axis pneumatic clamping system is fixed on the lower box body and positioned on the outer side of the A-axis brake disc, a stator of the A-axis torque motor is fixed on the A-axis motor seat, the A-axis motor seat is fixed on the lower box body and positioned on the right side of the A-axis pneumatic clamping system, a rotor of the A-axis turntable motor seat is sleeved and positioned on the right side of the A-axis turntable bearing seat, a protection sleeve is arranged on the right side of the A-axis motor seat, and a protection sleeve is arranged on the right side of the rotor, and the protection sleeve is fixed on the rotor; the C shaft part comprises a C shaft rotary table bearing, a C shaft torque motor, a C shaft motor seat, a C shaft brake shaft, a C shaft pneumatic clamping system, a transition disc and a transition plate, wherein the C shaft brake shaft is fixedly arranged at the top end of the lower box body, the C shaft brake shaft is fixedly connected with the upper end of a rotor of the C shaft torque motor through a C shaft connecting ring, the rotor of the C shaft torque motor is sleeved outside the C shaft brake shaft, a stator of the C shaft torque motor is fixedly arranged on the C shaft motor seat, the upper box body is the C shaft motor seat, the transition plate is fixedly connected with the lower side of the stator of the C shaft torque motor, the transition plate is fixedly connected with the lower side of the transition plate, the outer ring of the C shaft rotary table bearing is fixedly arranged on the transition disc, the rotor of the C shaft torque motor is fixedly arranged at the outer side of the lower box body, the C shaft clamping system is fixedly arranged at the top end of the C shaft, and the C shaft pneumatic clamping system is arranged at the top end cover of the C shaft, and the C shaft clamping system is fixedly arranged at the top end cover of the C shaft; the bearing seat of the A-axis turntable is internally provided with a transverse first wiring hole, the lower box body is internally provided with a transverse second wiring hole and a longitudinal third wiring hole, the C-axis brake shaft is internally provided with a longitudinal fourth wiring hole and a longitudinal fifth wiring hole, the second wiring hole, the third wiring hole, the fourth wiring hole and the fifth wiring hole are sequentially communicated, and the first wiring hole, the second wiring hole, the third wiring hole, the fourth wiring hole and the fifth wiring hole form wiring holes of cables and functional pipes required by the electric spindle.
2. A single pendulum direct drive AC pendulum head according to claim 1, wherein: the A-axis turntable bearing seat comprises a first step shaft and a second step shaft which are integrally arranged, the first step shaft is arranged on the left side of the second step shaft, the outer diameter of the first step shaft is larger than that of the second step shaft, the inner ring of the A-axis turntable bearing is fixed on the first step shaft, the A-axis brake disc is connected on the second step shaft in a centering manner, and the A-axis connecting ring is connected on the second step shaft in a centering manner; the inner hole of the lower box body comprises a first step hole, a second step hole and a third step hole which are coaxially arranged from left to right and are communicated with each other, the aperture of the first step hole is sequentially increased, the outer ring of the A-axis turntable bearing is arranged in the first step hole, the A-axis pneumatic clamping system is arranged in the second step hole, and the A-axis motor seat is arranged in the third step hole.
3. A single pendulum direct drive AC pendulum head according to claim 2, wherein: the A-axis turntable bearing seat is also integrally provided with a third step shaft, the third step shaft is arranged on the right side of the second step shaft and the outer diameter of the third step shaft is smaller than that of the second step shaft, the third step shaft is connected with an A-axis encoder in a centering manner, the A-axis encoder is fixed on an A-axis encoder seat, and the A-axis encoder seat is fixed on an A-axis motor seat.
4. A single pendulum direct drive AC pendulum head according to claim 1, wherein: the C-axis brake shaft comprises a fourth step shaft, a fifth step shaft, a sixth step shaft and a seventh step shaft which are coaxially arranged from bottom to top and have the outer diameter reduced in sequence, the fourth step shaft is connected with the top end of the lower box body in a centering manner, the C-axis pneumatic clamping system is arranged on the outer side of the fifth step shaft, the sixth step shaft is connected with a rotor of the C-axis torque motor in a centering manner, the C-axis connecting ring is sleeved on the outer side of the seventh step shaft, and the C-axis connecting ring is connected with the C-axis brake shaft in a centering manner.
5. A single pendulum direct drive AC pendulum head according to claim 4, wherein: the novel brake device is characterized in that an eighth step shaft and a ninth step shaft are further integrally arranged on the C-shaft brake shaft, the eighth step shaft is integrally arranged on the upper side of the seventh step shaft, the ninth step shaft is integrally arranged on the upper side of the eighth step shaft, the outer diameters of the seventh step shaft, the eighth step shaft and the ninth step shaft are sequentially reduced, a C-shaft encoder is centered and connected on the eighth step shaft, and the C-shaft encoder is reversely fixed on the lower side of the upper end cover.
6. A single pendulum direct drive AC pendulum head according to claim 5, wherein: the inner side of the upper end cover is connected with a sealing cover in a centering manner, the sealing cover is arranged above the C-axis encoder, a deep groove ball bearing is arranged between the sealing cover and the ninth step shaft, the outer ring of the deep groove ball bearing is pressed by a pressing plate, and the pressing plate is fixed on the sealing cover.
7. A single pendulum direct drive AC pendulum head according to claim 1, wherein: the transition disc is a circular transition disc, the transition plate is a square transition plate, and the side length of the transition plate is larger than the diameter of the transition disc.
8. A single pendulum direct drive AC pendulum head according to claim 1, wherein: the lower box body and the C-axis brake shaft are both made of aviation aluminum alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810863887.5A CN108772715B (en) | 2018-08-01 | 2018-08-01 | Simple pendulum direct drive type AC pendulum head |
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| CN201810863887.5A CN108772715B (en) | 2018-08-01 | 2018-08-01 | Simple pendulum direct drive type AC pendulum head |
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| CN108772715A CN108772715A (en) | 2018-11-09 |
| CN108772715B true CN108772715B (en) | 2023-09-08 |
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| CN201810863887.5A Active CN108772715B (en) | 2018-08-01 | 2018-08-01 | Simple pendulum direct drive type AC pendulum head |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153448A (en) * | 2019-05-30 | 2019-08-23 | 上海诺倬力机电科技有限公司 | Double-arm five shaft head structure |
| CN112427974A (en) * | 2020-11-18 | 2021-03-02 | 珠海格力智能装备有限公司 | Swing head structure |
| CN112427978A (en) * | 2021-01-28 | 2021-03-02 | 机械科学研究总院江苏分院有限公司 | Structure with four-axis function of main shaft and assembling method thereof |
| CN112975524B (en) * | 2021-02-09 | 2022-06-10 | 中国航空制造技术研究院 | Three-rotation-axis swing head suitable for ultrasonic cutting of composite material |
| CN113021020B (en) * | 2021-03-22 | 2022-09-09 | 宁波天控五轴数控技术有限公司 | AC directly drives structure of holding tightly of yaw and contains directly driving yaw of this structure |
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