WO2019232810A1 - 采用谐波减速器的精密b轴摆头 - Google Patents

采用谐波减速器的精密b轴摆头 Download PDF

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Publication number
WO2019232810A1
WO2019232810A1 PCT/CN2018/090539 CN2018090539W WO2019232810A1 WO 2019232810 A1 WO2019232810 A1 WO 2019232810A1 CN 2018090539 W CN2018090539 W CN 2018090539W WO 2019232810 A1 WO2019232810 A1 WO 2019232810A1
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Prior art keywords
base
axis
reducer
harmonic reducer
electric spindle
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PCT/CN2018/090539
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English (en)
French (fr)
Inventor
蔡汉生
蔡桂阳
黄展源
黄楚祥
蔡锐勇
杨盛填
林蔚
郑哲宇
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巨轮中德机器人智能制造有限公司
巨轮智能装备股份有限公司
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Publication of WO2019232810A1 publication Critical patent/WO2019232810A1/zh

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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
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B23Q1/706—Movable members, e.g. swinging arms
    • 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
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • 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

Definitions

  • the invention relates to a key component of a numerically controlled machine tool, in particular to a precision B-axis swing head using a harmonic reducer.
  • the B-axis swing head is one of the key functional components on CNC machine tools. It is mainly used to complete the machining functions of the machine tool, to ensure the full use of the basic functions of the machine tool, to expand the use of the machine tool, to ensure process accuracy, improve production efficiency, and reduce labor. All aspects such as strength play an important role.
  • Harmonic reducer consists of three basic components: wave generator, rigid gear (i.e. rigid wheel) and flexible gear (i.e. flexible wheel). It is a flexible bearing assembled on the wave generator to make the flexible wheel controllable elasticity. Gear transmission that deforms and meshes with the rigid wheel to transmit motion and power. Harmonic reducer has been widely used in aerospace, energy, machine tools, robots, electronic equipment, medical equipment, etc., especially in high dynamic performance servo systems, the use of harmonic gear transmission has shown its superiority.
  • the purpose of the present invention is to provide a precision B-axis swing head driven by a harmonic reducer, which aims to improve the dynamic performance of the B-axis swing head, thereby improving the machining accuracy of the machine tool.
  • the B-axis swing head is driven by a servo motor
  • the harmonic reducer is matched with a synchronous belt wheel set for transmission and deceleration, which drives the electric main shaft to rotate around the center of the reducer.
  • the invention includes a B-axis base, a motor base, a servo motor, a small synchronous pulley, a large synchronous pulley, a synchronous belt, an electric spindle support, an electric spindle, a harmonic reducer, and a reducer bushing, and a B-axis base.
  • the seat is cast-iron cast and has a hollow structure.
  • the servo motor is installed in the middle of the B shaft base through the motor seat.
  • the motor shaft of the servo motor is connected to the small synchronous pulley through a coupling device.
  • the reducer bushing is fixed to the B shaft by bolts.
  • the lower end of the base, the harmonic reducer is installed inside the reducer sleeve, the electric spindle support is fixedly connected to the output of the harmonic reducer, the electric spindle is locked on the electric spindle support, and the electric spindle can surround the harmonic reducer.
  • the central shaft rotates, and the input connection shaft of the harmonic reducer is connected to the large synchronous pulley.
  • the small synchronous pulley is connected to the large synchronous pulley through the synchronous belt to form a transmission pair and is placed inside the B-axis base.
  • the harmonic reducer is mainly composed of a wave generator, a rigid wheel and a flexible wheel.
  • the reducer shaft sleeve is fixed at the lower end of the B-axis base by bolts.
  • the harmonic reducer is assembled inside the reducer shaft sleeve.
  • the bolt is fixed in the middle of the sleeve;
  • the wave generator is connected to the connecting shaft by a flat key, and the left end of the connecting shaft is connected to a large synchronous pulley and fixed by a pin nut;
  • the flexible wheel is fixed by a bolt and a connecting flange, and the connecting flange and
  • the motor spindle support is connected; the motor spindle is locked on the motor spindle support.
  • a double-row angular contact ball bearing is assembled on a large synchronous pulley, and a second bearing end cover, a reducer sleeve and a wave generator are used to press the outer and inner rings of the bearing;
  • the inner wall of the bearing sleeve is equipped with a thin-walled cross roller bearing.
  • the outer and inner rings of the thin-walled cross-roller bearing are pressed by the lock outer nut and the lock inner nut, between the lock outer nut and the lock inner nut. With sealing ring seal.
  • the coupling device includes a connecting pin.
  • the right end of the connecting pin is connected to the output shaft of the servo motor through a coupling.
  • the middle part of the connecting pin is equipped with two deep groove ball bearings and two deep groove ball bearings. Spacer sleeve, the first bearing end cover presses the bearing and the spacer sleeve; the left end of the connecting pin is assembled with a small synchronous pulley by a flat key, and is fixed by a pressure plate.
  • a fine adjustment device is provided above the motor base: the fine adjustment device is composed of an adjustment substrate and an adjustment bolt, the adjustment substrate is fixed on the B-axis base by bolts, the adjustment bolt passes through the adjustment substrate, is connected to the motor base, and is rotated
  • the adjusting bolt can adjust the distance between the servo motor and the harmonic reducer, and plays the role of tensioning the timing belt.
  • the B-axis base is a cast-in-one hollow structure with cast iron material, which has good dimensional stability and vibration absorption characteristics. With timing belt end cap.
  • the B-axis base is formed by one-time casting, with simple structure, good rigidity and high shock resistance.
  • the harmonic reducer has the characteristics of large transmission speed ratio, high bearing capacity, high transmission accuracy, high transmission efficiency, and stable movement.
  • FIGS. 1 to 6 are schematic structural diagrams of an embodiment of the present invention, where:
  • Figure 1 is a schematic diagram of the internal structure (a cross-sectional view from the left);
  • FIG. 2 is a schematic diagram of a front view structure
  • FIG. 3 is a schematic diagram (a perspective view) of an outline
  • FIG. 4 is an enlarged view of a part K in FIG. 1 (a schematic structural diagram of a driving part); FIG.
  • FIG. 5 is an enlarged view of a part Q in FIG. 1 (a schematic structural diagram of a driven part); FIG.
  • FIG. 6 is an enlarged view of a portion R in FIG. 5.
  • 01 B-axis base; 02, connecting pin; 03, small timing pulley; 04, timing belt; 05, harmonic reducer; 06, large timing pulley; 07, connecting shaft; 08, fine-tuning Device; 09, motor base; 10, coupling; 11, servo motor; 12, electric spindle; 13, electric spindle support; 14, the first bearing end cover; 15, deep groove ball bearings; 16, spacers; 17. Adjusting bolt; 18. Adjusting base plate; 19. Press plate; 20. Rigid wheel; 21. Reducer bushing; 22. Pin nut; 23. Synchronous pulley end cover; 24. Double-row angular contact ball bearing; 25. Second bearing end cap; 26. Wave generator; 27. Flexible wheel; 28. Connecting flange; 29. Thin-walled cross roller bearing; 30. Locking outer nut; 31. Locking inner nut; Sealing ring.
  • a precision B-axis swing head using a harmonic reducer is mainly composed of a B-axis base 01, a small synchronous pulley 03, a harmonic reducer 05, a large synchronous pulley 06, and a motor base 09.
  • the upper back of the B-axis base 01 is connected to the Z-axis of the machine by T-bolts, and the B-axis base 01 has a hollow structure inside, and a small synchronization is installed inside the middle section
  • the pulley 03, the big shaft pulley 06 is installed inside the lower end of the B-axis base 01, and the large and small synchronous pulleys are linked by the timing belt 05 to form a transmission pair;
  • the servo motor 11 and the motor base 09 are assembled together, and are located in the middle of the B-axis base 01
  • the motor base 09 is fixed on the base by screws;
  • the harmonic reducer 05 is installed at the lower end of the B-axis base 01, the electric spindle support 13 is connected to the output of the harmonic reducer 05, and the electric spindle 12 is locked on the electric spindle
  • the support 13 can rotate around the center of the reducer.
  • the B-axis driving part the coupling 10 connects the output shaft of the servo motor 11 and the right end of the connecting pin 02, and the middle of the connecting pin 02 is equipped with two deep groove ball bearings 15 and a spacer 16, and the first bearing
  • the end cover 14 compresses the bearing and the spacer; the left end of the connecting pin 02 is assembled with the small synchronous pulley 03 by a flat key, and is fixed by a pressure plate 19.
  • a fine adjustment device 08 is provided above the motor base 09: the adjusting base plate 18 is fixed on the B-axis base by bolts, the adjusting bolt 17 passes through the adjusting base plate 18 and is connected to the motor base 09, and the servo motor 11 can be adjusted by turning the adjusting bolt 17 The distance from the harmonic reducer can further adjust the tension of the timing belt 04.
  • the harmonic reducer is mainly composed of a wave generator 26, a rigid
  • the wheel 20 and the flexible wheel 27 are composed of which the rigid wheel 20 is fixed to the middle section of the reducer sleeve 21 by bolts;
  • the wave generator 26 is connected to the connecting shaft 07 by a flat key, and the left end of the connecting shaft 07 is connected to the large timing belt wheel 06, and It is fixed by a pin nut 22;
  • the flexible wheel 27 is fixed with a connecting flange 28 by a bolt.
  • the large synchronous pulley 06 is equipped with a double-row angular contact ball bearing 24, and the outer and inner rings of the bearing are pressed by the second bearing end cover 25, the reducer sleeve 21 and the wave generator 26; referring to FIG. 6, the connecting flange 28 outer diameter assembled thin-walled crossed roller bearing 29, the outer ring and inner ring of the bearing are pressed by the lock outer nut 30 and the lock inner nut 31, respectively, and a seal ring 32 is sealed to prevent coolant, dust and the like from entering.
  • the thin-walled crossed roller bearing can withstand large radial, axial, and moment loads, and has excellent rotation accuracy. In this embodiment, multiple bearing arrangements are provided to ensure the rigidity and stability of the rotation of the B-axis swing head.
  • connection flange 28 The right side of the connection flange 28 is provided with a threaded hole, and the electro-spindle support 13 is connected to the connection flange by bolts.
  • the electro-spindle support 13 is hollow, the thickness of one side is slotted, and the drill is tapped.
  • the support 13 clamps the electric spindle through bolts; the lower end of the B-axis base 01 is installed with a timing belt end cover 23 for sealing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

一种采用谐波减速器的精密B轴摆头，主要由B轴基座（01）、大小同步带轮、谐波减速器（05）、电机座（09）、伺服电机（11）、电主轴（12）和电主轴支座（13）构成；B轴基座（01）采用铸铁铸造成型，内部中空结构，在中段处安装小同步带轮（03），伺服电机（11）通过联轴装置与小同步带轮（03）连接；B轴基座（01）下端安装大同步带轮（06），大小同步带轮通过同步带（04）链接形成传动副，并进行初级减速；二级减速采用谐波减速器（05），谐波减速器（05）的输入连接轴（07）与大同步带轮（06）连接，谐波减速器（05）安装在B轴基座（04）下端，电主轴（12）通过电主轴支座（13）与谐波减速器（05）的输出端连接。

Description

采用谐波减速器的精密B轴摆头 技术领域
本发明涉及一种数控机床的关键部件，具体是一种采用谐波减速器的精密B轴摆头。
背景技术
B轴摆头是数控机床上的关键功能部件之一，主要用于完成机床的加工功能，对保证机床基本功能的充分使用，扩大机床的使用工艺性能、保证加工精度、提高生产效率、减轻劳动强度等方面都起到重要的作用。
谐波减速器由波发生器、刚性齿轮(即刚轮)和柔性齿轮(即柔轮)三大基本构件组成，是一种靠波发生器上装配的柔性轴承，使柔轮产生可控弹性变形，并与刚轮相啮合来传递运动和动力的齿轮传动。谐波减速器在航空航天、能源、机床、机器人、电子设备、医疗器械等方面得到日益广泛的应用，特别是在高动态性能的伺服系统中，采用谐波齿轮传动更显示出其优越性。
发明内容
本发明的目的在于提供一种采用谐波减速器传动的精密B轴摆头，旨在改进B轴摆头的动态性能，从而提高机床加工精度。
本发明目的的实现是：B轴摆头采用伺服电机驱动、谐波减速器配套同步带轮组传动及减速，带动电主轴围绕减速器中心旋转。
本发明，包括B轴基座、电机座、伺服电机、小同步带轮、大同步带轮、同步带、电主轴支座、电主轴、谐波减速器、及减速器轴套，B轴基座采用铸铁铸造成型，内部中空结构，伺服电机通过电机座安装在B轴基座的中部，伺服电机的电机轴通过联轴装置与小同步带轮连接，减速器轴套通过螺栓固定在B轴基座下端，谐波减速器装配在减速器轴套内部，电主轴支座固定连接在谐波减速器的输出端，电主轴锁紧在电主轴支座上，电主轴可以围绕谐波减速器中心轴转动，谐波减速器的输入连接轴与大同步带轮连接，小同步带轮通过同步带与大同步带轮链接形成传动副且置于 B轴基座的内部中。
本发明，所述谐波减速器主要由波发生器、刚轮、柔轮组成，减速器轴套通过螺栓固定在B轴基座下端，谐波减速器装配在减速器轴套内部，刚轮通过螺栓固定在轴套中段；波发生器通过平键与连接轴连接，连接轴的左端连接大同步带轮，并通过销轴螺母固定；柔轮通过螺栓与连接法兰固定，连接法兰与电主轴支架连结；电主轴锁紧在电主轴支座上。
本发明，在大同步带轮上装配双列角接触球轴承，利用第二轴承端盖、减速器轴套及波发生器压住轴承的外圈和内圈；在连结法兰外径与减速器轴套的内壁装配薄壁交叉滚子轴承，利用锁紧外螺母和锁紧内螺母压住薄壁交叉滚子轴承的外圈和内圈，在锁紧外螺母和锁紧内螺母之间设有密封圈密封。
本发明，所述联轴装置包括连接销轴，连接销轴的右端通过联轴器联结伺服电机的输出轴，连接销轴的中部装配两个深沟球轴承和位于两个深沟球轴承之间的隔套，第一轴承端盖压紧轴承及隔套；连接销轴左端通过平键与小同步带轮装配，并用压盘固定。
本发明，在电机座上方设置有微调装置：所述微调装置由调节基板和调节螺栓组成，调节基板通过螺栓固定在B轴基座上，调节螺栓穿过调节基板，与电机座连接，通过转动调节螺栓，可调节伺服电机和谐波减速器的间距，起到张紧同步带的作用。
本发明，B轴基座为铸铁材质一体式铸造中空结构，具有良好的尺寸稳定性和吸振特性，B轴基座上端背部通过T型螺栓与机床的Z轴连结，B轴基座下端背部设有同步带轮端盖。
本发明的有益效果是：
1)、B轴基座采用一次铸造成型，结构简单，刚性好、抗震性高。
2)、采用伺服电机(伺服系统)驱动，控制性能好、精度高，使用寿命长。
3)、谐波减速器具有传动速比大、承载能力高，传动精度、传动效 率高、运动平稳等特点。
4)、结构轻巧，采用谐波减速器加同步带轮组传动，体积小、重量轻，零件数少、安装方便。
下面实施例结合附图说明对本发明作进一步的说明。
附图说明
图1-图6是本发明的一个实施例的结构示意图，其中，
图1是内部结构示意图(左视剖视图)；
图2是前视结构示意图；
图3是外形示意图(立体图)；
图4是图1之K部放大图(驱动部分结构示意图)；
图5是图1之Q部放大图(从动部分结构示意图)；
图6是图5之R部放大图。
图中，01、B轴基座；02、连接销轴；03、小同步带轮；04、同步带；05、谐波减速器；06、大同步带轮；07、连接轴；08、微调装置；09、电机座；10、联轴器；11、伺服电机；12、电主轴；13、电主轴支座；14、第一轴承端盖；15、深沟球轴承；16、隔套；17、调节螺栓；18、调节基板；19、压盘；20、刚轮；21、减速器轴套；22、销轴螺母；23、同步带轮端盖；24、双列角接触球轴承；25、第二轴承端盖；26、波发生器；27、柔轮；28、连接法兰；29、薄壁交叉滚子轴承；30、锁紧外螺母；31、锁紧内螺母；32、密封圈。
具体实施方式
参照图1-图3，一种采用谐波减速器的精密B轴摆头，主要由B轴基座01、小同步带轮03、谐波减速器05、大同步带轮06、电机座09、伺服电机11、电主轴12、电主轴支座13构成；B轴基座01上端背部通过T型螺栓与机床的Z轴连结，B轴基座01内部中空结构，在中段内部处安装小同步带轮03，B轴基座01下端内部安装大同步带轮06，大小同步带轮通过同步带05链接形成传动副；伺服电机11与电机座09装配在一起， 位于B轴基座01的中部，电机座09通过螺钉固定在基座上；谐波减速器05安装在B轴基座01下端，电主轴支座13与谐波减速器05的输出端连接，电主轴12锁紧在电主轴支座13上，可以围绕减速器中心旋转。
参照图4，B轴驱动部分：联轴器10联结伺服电机11的输出轴和连接销轴02的右端，连接销轴02的中部装配两个深沟球轴承15和隔套16，第一轴承端盖14压紧轴承及隔套；连接销轴02左端通过平键与小同步带轮03装配，并用压盘19固定。
在电机座09上方设置有微调装置08：调节基板18通过螺栓固定在B轴基座上，调节螺栓17穿过调节基板18，与电机座09连接，通过转动调节螺栓17，可调整伺服电机11与谐波减速器的间距，进而调节同步带04的张紧度。
参照图5，B轴从动部分：减速器轴套21通过螺栓固定在B轴基座下端，谐波减速器05装配减速器轴套21内部：谐波减速器主要由波发生器26、刚轮20、柔轮27组成，其中，刚轮20通过螺栓固定在减速器轴套21中段；波发生器26通过平键与连接轴07连接，连接轴07的左端连接大同步带轮06，并通过销轴螺母22固定；柔轮27通过螺栓与连接法兰28固定。
大同步带轮06上装配双列角接触球轴承24，利用第二轴承端盖25、减速器轴套21及波发生器26压住轴承的外圈和内圈；参照图6，连结法兰28外径装配薄壁交叉滚子轴承29，利用锁紧外螺母30、锁紧内螺母31分别压住轴承的外圈和内圈，并有密封圈32密封，防止冷却液、灰尘等进入。薄壁交叉滚子轴承可以承受较大的径向、轴向及力矩负荷，具有出色的旋转精度；本实施例，多处轴承的设置，保证B轴摆头转动的刚性和稳定性。
连接法兰28右侧设置有螺纹孔，电主轴支座13通过螺栓与连接法兰连结；电主轴支座13中空，一侧厚度开槽，并钻孔攻牙，电主轴12穿过电主轴支座13，支座通过螺栓夹紧电主轴；B轴基座01下端背部安装 同步带轮端盖23密封。
本发明的工作原理：根据加工零件的形状及加工工艺，在数控机床的操作系统输入执行控制程序，控制伺服电机11转动，驱动大小同步带轮组旋转并减速，再经过谐波减速器05二次减速，带动电主轴支座13及电主轴12圆周摆动。参照图2，以电主轴垂直位置为0°，B轴的摆动角度为-90°至+90°，共180°，通过与机床其他各轴的联合运动，能够满足细小文字、细微放射线、复杂曲面的精雕细刻。

Claims (6)

  1. 一种采用谐波减速器的精密B轴摆头，包括B轴基座(01)、电机座(09)、伺服电机(11)、小同步带轮(03)、大同步带轮(06)、同步带(04)、电主轴支座(13)和电主轴(12)，B轴基座(01)采用铸铁铸造成型，内部中空结构，伺服电机(11)通过电机座(09)安装在B轴基座(01)的中部，伺服电机(11)的电机轴通过联轴装置与小同步带轮(03)连接，其特征在于：还包括谐波减速器(05)及减速器轴套(21)，减速器轴套(21)通过螺栓固定在B轴基座(01)下端，谐波减速器(05)装配在减速器轴套(21)内部，电主轴支座(13)固定连接在谐波减速器(05)的输出端，电主轴(12)锁紧在电主轴支座(13)上，电主轴(05)可以围绕谐波减速器(05)中心轴转动，谐波减速器(05)的输入连接轴(07)与大同步带轮(06)连接，小同步带轮(03)通过同步带(04)与大同步带轮(06)链接形成传动副且置于B轴基座(01)的内部中。
  2. 根据权利要求1所述的采用谐波减速器的精密B轴摆头，其特征在于：所述谐波减速器主要由波发生器(26)、刚轮(20)、柔轮(27)组成，减速器轴套(21)通过螺栓固定在B轴基座下端，谐波减速器(05)装配在减速器轴套(21)内部，刚轮(20)通过螺栓固定在轴套中段；波发生器(26)通过平键与连接轴(07)连接，连接轴(07)的左端连接大同步带轮(06)，并通过销轴螺母(22)固定；柔轮(27)通过螺栓与连接法兰(28)固定，连接法兰(28)与电主轴支架(13)连结；电主轴(12)锁紧在电主轴支座(13)上。
  3. 根据权利要求2所述的采用谐波减速器的精密B轴摆头，其特征在于：在大同步带轮(06)上装配双列角接触球轴承(24)，利用第二轴承端盖(25)、减速器轴套(21)及波发生器(26)压住轴承的外圈和内圈；在连结法兰(28)外径与减速器轴套(21)的内壁装配薄壁交叉滚子轴承(29)，利用锁紧外螺母(30)和锁紧内螺母(31)压住薄壁交叉滚子轴承(29)的外 圈和内圈，在锁紧外螺母(30)和锁紧内螺母(31)之间设有密封圈(32)密封。
  4. 根据权利要求1所述的采用谐波减速器的精密B轴摆头，其特征在于：所述联轴装置包括连接销轴(02)，连接销轴(02)的右端通过联轴器(10)联结伺服电机(11)的输出轴，连接销轴(02)的中部装配两个深沟球轴承(15)和位于两个深沟球轴承(15)之间的隔套(16)，第一轴承端盖(14)压紧轴承及隔套；连接销轴(02)左端通过平键与小同步带轮(03)装配，并用压盘(19)固定。
  5. 根据权利要求1所述的采用谐波减速器的精密B轴摆头，其特征在于：在电机座(09)上方设置有微调装置(08)：所述微调装置(08)由调节基板(18)和调节螺栓(17)组成，调节基板(18)通过螺栓固定在B轴基座上，调节螺栓(17)穿过调节基板(18)，与电机座(09)连接，通过转动调节螺栓(17)，可调整伺服电机(11)和谐波减速器的间距，进而调节同步带04的张紧度。
  6. 根据权利要求1所述的采用谐波减速器的精密B轴摆头，其特征在于：B轴基座(01)为铸铁材质一体式铸造中空结构，具有良好的尺寸稳定性和吸振特性，B轴基座(01)上端背部通过T型螺栓与机床的Z轴连结，B轴基座(01)下端背部设有同步带轮端盖(23)密封。
PCT/CN2018/090539 2018-06-07 2018-06-10 采用谐波减速器的精密b轴摆头 WO2019232810A1 (zh)

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