CN111872709B - Five-axis machining tool with double power spindles - Google Patents

Five-axis machining tool with double power spindles Download PDF

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Publication number
CN111872709B
CN111872709B CN202010642047.3A CN202010642047A CN111872709B CN 111872709 B CN111872709 B CN 111872709B CN 202010642047 A CN202010642047 A CN 202010642047A CN 111872709 B CN111872709 B CN 111872709B
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CN
China
Prior art keywords
main shaft
worm
planetary
power
driving
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Expired - Fee Related
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CN202010642047.3A
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Chinese (zh)
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CN111872709A (en
Inventor
周涛
田进宏
陈勇
廖家猛
杨永
曽明
伍国果
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Chongqing Huazhong Numerical Control Technology Co ltd
Chongqing University of Arts and Sciences
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Chongqing Huazhong Numerical Control Technology Co ltd
Chongqing University of Arts and Sciences
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Application filed by Chongqing Huazhong Numerical Control Technology Co ltd, Chongqing University of Arts and Sciences filed Critical Chongqing Huazhong Numerical Control Technology Co ltd
Priority to CN202010642047.3A priority Critical patent/CN111872709B/en
Publication of CN111872709A publication Critical patent/CN111872709A/en
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Publication of CN111872709B publication Critical patent/CN111872709B/en
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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
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • 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
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
    • 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
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/36—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission in which a servomotor forms an essential element

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

The invention discloses a five-axis machining tool with double power main shafts, wherein two driving motors are used for inputting power through a planetary structure formed by worm gears and worms respectively, and the driving motors are driven by strokes of two main shaft driving assemblies and eliminate return difference, so that the advantages of five-axis machining systems such as machining precision and the like are ensured while the driving precision is ensured, higher dynamic characteristic, feeding speed and cutting speed can be obtained, better machining surface quality can be obtained, and the machining efficiency is improved; meanwhile, the double power can turn off the other power when one power is output, and turn on the other motor when a large torque is needed, the double power input respectively passes through the worm gear pair, and the worm gear pair is meshed through the planetary gear; the complex curved surface machining of multiple planes and multiple processes of parts can be automatically, quickly, accurately and efficiently and continuously finished.

Description

Five-axis machining tool with double power spindles
Technical Field
The invention relates to a machine tool, in particular to a five-axis linkage system.
Background
The five-axis linkage equipment belongs to the common equipment in the numerical control machine tool and is used for processing parts with complex structures; in order to ensure the final machining precision, a high-speed direct-connected main shaft and a servo system are generally configured, a ball screw and a linear guide rail are arranged in the direction of X, Y, Z, a servo motor is used for direct stepless speed change driving, a B, C rotating shaft adopts the servo motor to form a direct-drive turntable, and finally the main shaft drives a cutter to complete the machining work of parts. For a numerical control machine tool, in order to ensure the machining precision, an electric spindle is basically adopted as a spindle structure, machining power is output through a spindle directly connected with a servo motor, and the numerical control machine tool is simple in structure and small in size. However, because the spindle is directly connected with the motor, the micro vibration and the operation error of the motor can be transmitted to the spindle and then transmitted to the cutter, and the machining precision is finally influenced; moreover, for machined parts, parts which are large or require large torque, a common numerical control machine tool has no universality, and a machine tool with larger power needs to be replaced; for parts requiring smaller torque, a machine tool requiring smaller output power is required, and for parts requiring larger torque, machining cannot be completed.
Therefore, the existing five-axis machining system is improved, so that the vibration generated by the operation of a main shaft power source (motor) cannot be transmitted to the machining tool, and particularly, the rotating precision can be kept for a long time, so that the advantages of the five-axis machining system such as the machining precision and the like are ensured, higher dynamic characteristics, higher feeding speed and higher cutting speed can be obtained, better machining surface quality can be obtained, and the machining efficiency is improved; meanwhile, the method has certain universality.
Disclosure of Invention
In view of the above, the present invention provides a dual-power spindle five-axis machine tool, which prevents the vibration generated by the operation of the spindle power source (motor) from being transmitted to the machining tool itself, and especially can maintain the rotating precision for a long time, so as to ensure the advantages of a five-axis machining system such as the machining precision, etc., and can obtain higher dynamic characteristics, feed speed and cutting speed, and can obtain better machining surface quality and improve the machining efficiency; meanwhile, the method has certain universality.
The invention relates to a five-axis machining tool with double power spindles, which comprises a basic structure, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, a horizontal rotating assembly, a vertical rotating assembly and a power spindle assembly, wherein the X-axis moving assembly is arranged on the basic structure;
the power main shaft assembly comprises a power output main shaft and a main shaft driving assembly, and the main shaft driving assembly comprises a first box main shaft driving assembly and a second main shaft driving assembly;
the first main shaft driving assembly comprises a first shell, a first left input worm wheel, a first right input worm wheel, a first left planetary worm meshed with the first left input worm wheel and a first right planetary worm meshed with the first right input worm wheel, wherein the first left input worm wheel and the first right input worm are positioned in the first shell; the first left planetary worm and the first right planetary worm are respectively arranged on the first shell in a rotating fit manner and follow the first shell;
two ends of the first left planetary worm are respectively provided with two first left planetary gears in a transmission fit mode, two ends of the first right planetary worm are respectively provided with two first right planetary gears in a transmission fit mode, and the two first left planetary gears are correspondingly meshed with the two first right planetary gears;
the first main shaft driving assembly further comprises a first left driving motor and a first right driving motor, the first left driving motor is used for inputting power into the first left input worm wheel, the first right driving motor is used for inputting power into the first right input worm wheel, and a double-power input structure is formed;
a first main shaft driving gear is arranged in transmission fit with the first shell, and a first main shaft driven gear is arranged in transmission fit with the power output main shaft and meshed with the first main shaft driving gear;
the second main shaft driving assembly comprises a second main shaft driving gear and a second main shaft driven gear which is in transmission fit with the power output main shaft and is meshed with the second main shaft driving gear;
when the first main shaft driving gear drives the power output main shaft to rotate in one direction through the first main shaft driven gear, the second main shaft driving gear forms resistance in the opposite direction through the second main shaft driven gear, and the resistance is used for eliminating return difference.
Further, the second main shaft driving assembly comprises a second shell, a second left input worm gear, a second right input worm gear, a second left planetary worm meshed with the second left input worm gear, and a second right planetary worm meshed with the second right input worm gear; the second left planetary worm and the second right planetary worm are respectively arranged on the second shell in a rotating fit manner and follow the second shell;
two ends of the second left planetary worm are respectively provided with two second left planetary gears in a transmission fit manner, two ends of the second right planetary worm are respectively provided with two second right planetary gears in a transmission fit manner, and the two second left planetary gears are correspondingly meshed with the two second right planetary gears;
the main shaft second driving assembly also comprises a second left driving motor and a second right driving motor, the second left driving motor is used for inputting power into a second left input worm wheel, and the second right driving motor is used for inputting power into a second right input worm wheel, so that a double-power input structure is formed;
the second driving gear of the main shaft is in transmission fit with the second shell;
when the first main shaft driving gear drives the power output main shaft to rotate in one direction through the first main shaft driven gear, the second main shaft driving gear forms resistance in the opposite direction through the second main shaft driven gear so as to eliminate return difference;
and when the second main shaft driving gear drives the power output main shaft to rotate towards the other direction through the second main shaft driven gear, the first main shaft driving gear forms resistance towards the opposite direction through the first main shaft driven gear so as to eliminate return difference.
Further, the first left driving motor drives the first left input worm gear through a first left half shaft, and the first right driving motor drives the first right input worm gear through a first right half shaft; the second left driving motor drives the second left input worm gear through a second left half shaft, and the second right driving motor drives the second right input worm gear through a second right half shaft.
Furthermore, the first left planetary worm, the first right planetary worm, the second left planetary worm and the second right planetary worm are respectively arranged uniformly along the circumferential direction.
Furthermore, the first left planetary worm, the first right planetary worm, the second left planetary worm and the second right planetary worm are respectively arranged on the corresponding worm shafts in a transmission matching mode, the shell is of a cylindrical structure, and a shaft seat used for rotatably supporting the worm shafts is fixedly arranged on the inner wall of the shell.
Further, the first left planetary worm and the first right planetary worm are coaxially arranged, the second left planetary worm and the second right planetary worm are coaxially arranged, and the first left planetary worm and the first right planetary worm are parallel to the power output main shaft.
Furthermore, the first main shaft driving gear and the second main shaft driving gear are arranged on two sides of the power output main shaft in a row mode.
The invention has the beneficial effects that: the invention is a five-axis machine tool with double power main shafts, the two driving motors are respectively input with power to form double power, and the two main shafts drive the assembly stroke to drive and eliminate the return difference, the driving power is relatively independent with the main shafts, thus the power source and the main shafts are separately arranged through the transmission structure, the return difference is eliminated in the driving process, the driving precision is ensured, simultaneously, the vibration generated by the operation of the power source (motor) is prevented from being transmitted to the power main shafts, after the machine tool is used for a long period, the driving precision of the motor is reduced, the rotating precision can still be kept, the advantages of a five-axis machining system such as the machining precision and the like are ensured, higher dynamic characteristic, feeding speed and cutting speed can be obtained, better machining surface quality can be obtained, and the machining efficiency is improved; the machining device can automatically, high-speed, high-precision and high-efficiency continuously finish the machining of a plurality of planes and complex curved surfaces of a plurality of procedures of parts, and is suitable for the fields of spaceflight, military industry, automobiles, ships, medical treatment, molds and the like; meanwhile, the double power can turn off the other power when one power is output, and turn on the other motor when a large torque is needed, the double power input respectively passes through the worm gear pair, and the worm gear pair is meshed through the planetary gear.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic cross-sectional view of a spindle drive assembly of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of a spindle drive assembly;
FIG. 4 is a front view of a five-axis machine tool;
FIG. 5 is a side view of a five-axis machine tool.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, fig. 2 is a schematic structural diagram of X-axis driving, and fig. 3 is a schematic structural diagram of Y-axis and Z-axis driving, as shown in the figures: the five-axis machining tool with double power spindles comprises a basic structure 14, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, a horizontal rotating assembly, a vertical rotating assembly and a power spindle assembly;
an X-axis moving component (pointed by an X arrow in the figure), a Y-axis moving component (pointed by a Y arrow in the figure) and a Z-axis moving component (pointed by a Z arrow in the figure) of the five-axis machining system (machine tool) are used for forming three-dimensional movement in the direction of three-dimensional coordinates; a horizontal rotating assembly and a vertical rotating assembly are arranged on the workbench, the horizontal rotating assembly rotates around a horizontal shaft (indicated by an arrow B in the figure), and the vertical rotating assembly rotates around a vertical shaft (indicated by an arrow C in the figure); the structure forms multidirectional adaptive characteristics, so that the processing of workpieces with complex surfaces is facilitated; the basic structure refers to a part for supporting the freedom degree movement or rotation in each direction on the machine tool to form a complete machine tool structure, and can be designed into a required structural form according to the requirement, and the details are not repeated;
the driving structure and the guiding structure of the X-axis moving assembly, the Y-axis moving assembly and the Z-axis moving assembly are all the prior art, namely, the dragging plate, the lead screw, the nut arranged on the dragging plate and matched with the lead screw and the like are used, and the description is omitted; similarly, the horizontal rotation and the vertical rotation are both completed by the existing driving system, and are not described again;
the power main shaft assembly comprises a power output main shaft 13 and a main shaft driving assembly, and the main shaft driving assembly box body 11 comprises a main shaft first driving assembly and a main shaft second driving assembly;
the first main shaft driving assembly comprises a first left input worm wheel 2, a first right input worm wheel 6, a first left planetary worm 3 meshed with the first left input worm wheel 2 and a first right planetary worm 7 meshed with the first right input worm wheel 6, which are positioned in the first shell 1; the first left planetary worm 6 and the first right planetary worm 7 are respectively arranged on the first shell 1 in a rotating fit manner and follow-up with the first shell 1, which means that the first left planetary worm 6 and the first right planetary worm 7 can rotate together with the shell on the basis of the rotating fit, namely the first left planetary worm 6 and the first right planetary worm 7 can be arranged on the shell through corresponding shafts;
the two ends of the first left planetary worm 6 are respectively provided with two first left planetary gears 4 in a transmission fit mode, the two ends of the first right planetary worm 7 are respectively provided with two first right planetary gears 8 in a transmission fit mode, the two first left planetary gears 4 are correspondingly meshed with the two first right planetary gears 8, as shown in the figure, the first left planetary worm 6 is provided with a worm shaft in a transmission fit mode, the two first left planetary gears 4 are arranged at the two ends of the first left planetary worm 6 in a transmission fit mode and are arranged with the worm shaft in a transmission fit mode, the same structure is adopted, the other worm shaft is arranged at the first right planetary worm 7 in a transmission fit mode, the two ends of the first right planetary worm 7 are provided with the two first right planetary gears 8 in a transmission fit mode, and the first left planetary gear 4 at the same end is meshed with the first right planetary gear 8;
in the structure, the worm wheel is adopted for inputting and the power is output to the shell 1 through the worm, when one power is input and the other power is stopped, the worm on the stopped side is driven to roll on the worm wheel, and no power is input; when double powers are input, the gears meshed with each other are driven by the two worm gears to realize synchronization, and power can be input simultaneously without requiring the synchronization of rotating speeds;
the first main shaft driving assembly further comprises a first left driving motor 9 used for inputting power into the first left input worm wheel and a first right driving motor 10 used for inputting power into the first right input worm wheel, and a double-power input structure is formed;
a first main shaft driving gear 5 is arranged in transmission fit with the shell 1, and the first main shaft driving gear and the shell are integrally formed; a first driven gear 12 of the main shaft is arranged in transmission fit with the power output main shaft 13 and meshed with the first driving gear 5 of the main shaft; the transmission matching adopts the existing mechanical transmission matching structure, and the invention generally adopts an integrally formed structure in order to ensure the transmission precision;
the second main shaft driving assembly comprises a second main shaft driving gear 5a and a second main shaft driven gear 12a which is in transmission fit with the power output main shaft 13 and is meshed with the second main shaft driving gear; the second driving assembly of the main shaft can be a structure that the second driving gear of the main shaft is driven by a single motor, and is not described herein again;
when the first main shaft driving gear 5 drives the power output main shaft 13 to rotate in one direction through the first main shaft driven gear 12, the second main shaft driving gear 5a forms resistance in the opposite direction through the second main shaft driven gear 12a, so as to eliminate return difference; the resistance refers to small torque resistance, and is only used for eliminating the transmission return difference of the gear without causing adverse effect on the normal driving process;
therefore, in the transmission driving process, the driving motor and the kinematic pair do not directly form driving, so that the vibration process cannot be directly transmitted, the transmission precision is ensured, and the final processing precision is naturally ensured; meanwhile, two groups of gears are utilized to form a transmission pair which can be respectively driven to form positive and negative rotation and mutually eliminate return difference, so that the gear transmission return difference is eliminated under the condition of ensuring no vibration transmission, and the transmission precision is finally ensured;
the invention completes driving through two motors, controls access according to output requirements, and can reduce the power of a single motor, thereby saving cost.
In this embodiment, the second driving assembly of the main shaft comprises a second left input worm wheel 2a, a second right input worm wheel 6a, a second left planetary worm 3a meshed with the second left input worm wheel 2a, and a second right planetary worm 7a meshed with the second right input worm wheel 6a, which are positioned in the second housing 1 a; the second left planetary worm 3a and the second right planetary worm 6a are respectively arranged on the second shell 1a in a rotating fit manner and follow the second shell 1 a;
two ends of the second left planetary worm 3a are respectively provided with two second left planetary gears 4a in a transmission fit manner, two ends of the second right planetary worm 7a are respectively provided with two second right planetary gears 8a in a transmission fit manner, and the two second left planetary gears 4a are correspondingly meshed with the two second right planetary gears 8 a; as shown in the figure, a worm shaft is arranged at the two ends of the second left planetary worm 6a in a transmission fit manner, two second left planetary gears 4a are arranged at the two ends of the second left planetary worm 6a in a transmission fit manner with the worm shaft, another worm shaft is arranged at the two ends of the second right planetary worm 7a in a transmission fit manner, two second right planetary gears 8a are arranged at the two ends of the second right planetary worm 7a in a transmission fit manner with the worm shaft, and the second left planetary gear 4a and the second right planetary gear 8a at the same end are meshed;
the second driving assembly of the main shaft also comprises a second left driving motor 9a used for inputting power into the second left input worm wheel 2a and a second right driving motor 10a used for inputting power into the second right input worm wheel 6a, so that a double-power input structure is formed;
the second driving gear 5a of the spindle is in transmission fit with the second housing 1a, and is integrally formed in this embodiment;
when the first main shaft driving gear 5 drives the power output main shaft 13 to rotate in one direction through the first main shaft driven gear 12, the second main shaft driving gear 5a forms resistance in the opposite direction through the second main shaft driven gear 12a, so as to eliminate return difference; the same as the above structure;
when the main shaft second driving gear 5a drives the power output main shaft 13 to rotate in the other direction (reverse direction) through the main shaft second driven gear 12a during reverse driving, the main shaft first driving gear 5 forms resistance in the reverse direction through the main shaft first driven gear 12 to eliminate return difference;
according to the invention, the first main shaft driving component and the second main shaft driving component respectively complete the rotation driving in two directions, so that the main shaft is rotated, and the resistance is formed by the other motor in the driving process, so that the return difference is eliminated, and the higher driving precision is ensured.
In this embodiment, the first left driving motor 9 drives the first left input worm gear 2 through a first left half shaft 901, and the first right driving motor 10 drives the first right input worm gear 6 through a first right half shaft 1001; the second left driving motor 9a drives the second left input worm gear 2a through a second left half shaft 901a, and the second right driving motor 10a drives the second right input worm gear 6a through a second right half shaft 1001 a; the structure is simple. And (5) the layout is complete.
In this embodiment, the first left planetary worm 4, the first right planetary worm 7, the second left planetary worm 4a and the second right planetary worm 7a are respectively arranged uniformly along the circumferential direction, and have a simple and compact structure and uniform force transmission.
In this embodiment, the first left planetary worm 4, the first right planetary worm 7, the second left planetary worm 4a, and the second right planetary worm 7a are respectively disposed on corresponding worm shafts in a transmission fit manner, the worm shafts 301, 701, 301a, 701a are shown in the figure, the first housing 1 and the second housing 1a are cylindrical structures, and the inner walls thereof are fixedly provided with shaft seats 101 for rotatably supporting the worm shafts, as shown in the figure, the shaft seats 101 are integrally formed with the first housing 1 and penetrate through the housing 1 in the length direction, meanwhile, two ends of the worm shafts 301, 701, 301a, 701a respectively penetrate through the corresponding shaft seats 101 and are rotatably fitted through bearings, for convenience of installation and disassembly, the worm shafts may be made into a sectional structure, or shaft seat covers may be separately disposed on the shaft seats outside the housing, and may be disassembled from the outside, which will not be described herein again.
In this embodiment, the first left planetary worm 3 and the first right planetary worm 7 are coaxially arranged, and the second left planetary worm 3a and the second right planetary worm 7a are coaxially arranged, and are both parallel to the power output main shaft 13, so that the overall structure is compact and regular, and the installation is convenient.
In this embodiment, the first driving gear 5 and the second driving gear 5a of the main shaft are arranged on two sides of the power output main shaft, so that the structure is simple and the force transmission is uniform.
As shown in the figure, the first main shaft driving assembly and the second main shaft driving assembly are both located in a box body 11, the power output end of a power output main shaft 13 extends out and downwards (downwards in the direction of the Z axis) to be used for outputting power, the upper part of the power output main shaft is rotatably supported on the box body 11, and the box body 11 is fixedly installed on a Z axis carriage of a machine tool to form a complete main shaft driving structure.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (7)

1. The utility model provides a five-axis machining machine tool of double dynamical main shaft which characterized in that: the device comprises a basic structure, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, a horizontal rotating assembly, a vertical rotating assembly and a power main shaft assembly;
the power main shaft assembly comprises a power output main shaft and a main shaft driving assembly, and the main shaft driving assembly comprises a box body, a main shaft first driving assembly and a main shaft second driving assembly;
the first main shaft driving assembly comprises a first shell, a first left input worm wheel, a first right input worm wheel, a first left planetary worm meshed with the first left input worm wheel and a first right planetary worm meshed with the first right input worm wheel, wherein the first left input worm wheel and the first right input worm are positioned in the first shell; the first left planetary worm and the first right planetary worm are respectively arranged on the first shell in a rotating fit manner and follow the first shell;
two ends of the first left planetary worm are respectively provided with two first left planetary gears in a transmission fit manner, two ends of the first right planetary worm are respectively provided with two first right planetary gears in a transmission fit manner, and the two first left planetary gears are correspondingly meshed with the two first right planetary gears;
the first main shaft driving assembly further comprises a first left driving motor and a first right driving motor, the first left driving motor is used for inputting power into the first left input worm wheel, the first right driving motor is used for inputting power into the first right input worm wheel, and a double-power input structure is formed;
a first main shaft driving gear is arranged in transmission fit with the first shell, and a first main shaft driven gear is arranged in transmission fit with the power output main shaft and meshed with the first main shaft driving gear;
the second main shaft driving assembly comprises a second main shaft driving gear and a second main shaft driven gear which is in transmission fit with the power output main shaft and is meshed with the second main shaft driving gear;
when the first main shaft driving gear drives the power output main shaft to rotate in one direction through the first main shaft driven gear, the second main shaft driving gear forms resistance in the opposite direction through the second main shaft driven gear, and the resistance is used for eliminating return difference.
2. The five-axis machine tool with double power spindles as claimed in claim 1, characterized in that: the second driving assembly of the main shaft comprises a second shell, a second left input worm wheel, a second right input worm wheel, a second left planetary worm meshed with the second left input worm wheel and a second right planetary worm meshed with the second right input worm wheel, wherein the second left input worm wheel and the second right input worm wheel are positioned in the second shell; the second left planetary worm and the second right planetary worm are respectively arranged on the second shell in a rotating fit manner and follow the second shell;
two ends of the second left planetary worm are respectively provided with two second left planetary gears in a transmission fit manner, two ends of the second right planetary worm are respectively provided with two second right planetary gears in a transmission fit manner, and the two second left planetary gears are correspondingly meshed with the two second right planetary gears;
the main shaft second driving assembly also comprises a second left driving motor and a second right driving motor, the second left driving motor is used for inputting power into a second left input worm wheel, and the second right driving motor is used for inputting power into a second right input worm wheel, so that a double-power input structure is formed;
the second driving gear of the main shaft is in transmission fit with the second shell;
when the first main shaft driving gear drives the power output main shaft to rotate in one direction through the first main shaft driven gear, the second main shaft driving gear forms resistance in the opposite direction through the second main shaft driven gear so as to eliminate return difference;
and when the second main shaft driving gear drives the power output main shaft to rotate towards the other direction through the second main shaft driven gear, the first main shaft driving gear forms resistance towards the opposite direction through the first main shaft driven gear so as to eliminate return difference.
3. The five-axis machine tool with double power spindles as claimed in claim 2, characterized in that: the first left driving motor drives the first left input worm gear through a first left half shaft, and the first right driving motor drives the first right input worm gear through a first right half shaft; the second left driving motor drives the second left input worm gear through a second left half shaft, and the second right driving motor drives the second right input worm gear through a second right half shaft.
4. The five-axis machine tool with double power spindles as claimed in claim 3, characterized in that: the first left planetary worm, the first right planetary worm, the second left planetary worm and the second right planetary worm are respectively arranged along the circumferential direction and are evenly arranged.
5. The five-axis machine tool with double power spindles as claimed in claim 3, characterized in that: the first left planetary worm, the first right planetary worm, the second left planetary worm and the second right planetary worm are respectively arranged on the corresponding worm shafts in a transmission matching mode, the first shell and the second shell are both of cylindrical structures, and shaft seats used for rotatably supporting the worm shafts are fixedly arranged on the inner walls of the first shell and the second shell.
6. The five-axis machine tool with double power spindles as claimed in claim 3, characterized in that: the first left planetary worm and the first right planetary worm are coaxially arranged, the second left planetary worm and the second right planetary worm are coaxially arranged, and the first left planetary worm and the first right planetary worm are parallel to the power output main shaft.
7. The five-axis machine tool with double power spindles as defined in claim 3, characterized in that: the first main shaft driving gear and the second main shaft driving gear are arranged on two sides of the power output main shaft in a row mode.
CN202010642047.3A 2020-07-06 2020-07-06 Five-axis machining tool with double power spindles Expired - Fee Related CN111872709B (en)

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CN202010642047.3A CN111872709B (en) 2020-07-06 2020-07-06 Five-axis machining tool with double power spindles

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CN202010642047.3A CN111872709B (en) 2020-07-06 2020-07-06 Five-axis machining tool with double power spindles

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CN111872709A CN111872709A (en) 2020-11-03
CN111872709B true CN111872709B (en) 2022-05-06

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Citations (8)

* Cited by examiner, † Cited by third party
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CN104551025A (en) * 2014-12-31 2015-04-29 陈仁杰 Gear grinding machine and workpiece spindle box thereof
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