WO2012167575A1 - 一种精密数控平旋车床 - Google Patents

一种精密数控平旋车床 Download PDF

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Publication number
WO2012167575A1
WO2012167575A1 PCT/CN2011/083054 CN2011083054W WO2012167575A1 WO 2012167575 A1 WO2012167575 A1 WO 2012167575A1 CN 2011083054 W CN2011083054 W CN 2011083054W WO 2012167575 A1 WO2012167575 A1 WO 2012167575A1
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WIPO (PCT)
Prior art keywords
ball screw
rotary
lathe
horizontal rotating
flat
Prior art date
Application number
PCT/CN2011/083054
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English (en)
French (fr)
Inventor
谭松江
Original Assignee
烟台路辰世友数控机械有限公司
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Application filed by 烟台路辰世友数控机械有限公司 filed Critical 烟台路辰世友数控机械有限公司
Priority to DE112011105246.4T priority Critical patent/DE112011105246T5/de
Priority to US14/124,729 priority patent/US9623530B2/en
Publication of WO2012167575A1 publication Critical patent/WO2012167575A1/zh

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Classifications

    • 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
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • B23Q5/44—Mechanism associated with the moving member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03432—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing
    • B23B29/03435—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing by means of screws and nuts
    • B23B29/03439—Boring and facing heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/04—Balancing rotating components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03432—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing
    • B23B29/03467—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing by means of gears and racks
    • B23B29/03471—Boring and facing heads
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2512—Lathe having facing tool fed transverse to work

Definitions

  • the present invention relates to the field of machine tools, and in particular to a precision numerical control rotary rotary lathe.
  • a numerically controlled rotary lathe is widely used in the field of cutting machining of workpieces because of its convenient movement of the radial sliding plate on the rotary disk.
  • the numerically controlled flat-turn lathe has a radial sliding of the sliding plate driven by a rack and pinion, that is, the main rack passes through the main shaft and is driven by a motor disposed at the rear of the lathe ram through the screw shaft, and the other end of the main rack is driven.
  • the gears in the flat disk rotate, and the gears thereby move the racks provided on the slider, thereby moving the sliders in the radial direction.
  • the drive structure still has major defects: First, due to the large difference in the transmission of power between the rack and pinion, the repeated positioning accuracy is low, affecting the machining efficiency and the machining accuracy of the workpiece; Second, when the feed slide is biased to one side, The flat disc system loses balance. When the flat disc rotates at high speed, it generates vibration or impact, which affects the machining accuracy of the workpiece, or limits the rotation speed of the flat disc. Third, the mechanism is complex and the assembly requirements are high.
  • the object of the present invention is to provide a precision numerical control flat rotary lathe, which is accurate in positioning, makes the adjustment of the lathe very convenient, improves the processing efficiency, and the flat rotary disc system can always maintain a good balance state during the slider adjustment process.
  • a precision numerical control rotary rotary lathe comprising a flat rotary disk and a feed slide plate, wherein the rotary disk is provided with a sliding slot, and the feed slide plate is mounted on the flat rotation
  • a ball screw feeding device capable of driving the slider to perform radial movement is provided on the flat disc.
  • the invention has the beneficial effects that: the positioning of the feed slide plate is accurate due to the use of the ball screw drive, In turn, the adjustment of the lathe is very convenient, the processing efficiency is improved, and the drive system is cylindricalized, the large transmission device is omitted, and the machine tool manufacturing cost is saved. Based on the above technical solutions, the present invention can also be improved as follows.
  • the ball screw feeding device comprises a ball screw, a motor, a belt and a ball screw pair, and the two ends of the ball screw are fixed on the flat disk by a support bearing.
  • the motor is coupled to the ball screw via a belt, and the ball screw is coupled to the slide plate by a ball screw pair.
  • the ball screw feeding device further includes a signal converter for supplying electric power to the motor, and the signal converter is installed at a tail end of the main shaft to realize conversion of the stationary power signal to the motion power signal.
  • the flat rotating disc is further provided with a dynamic balancing device.
  • the dynamic balancing device includes a weight, a weight, a fixed block and a pulley, the pulleys are arranged in pairs, the weight rope is wound around the pair of pulleys, and the weight is fixed at
  • the fixing block is fixedly connected to the ball screw pair, and the weight rope is connected to the fixing block.
  • the flat rotary disk system Due to the use of the dynamic balance device, the flat rotary disk system can always maintain a good balance state during the slider adjustment process, thereby reducing the vibration of the machine tool and facilitating the machining accuracy of the workpiece and Increase in machine speed.
  • FIG. 1 is a schematic structural view of a precision numerical control rotary rotary lathe according to the present invention
  • Figure 2 is a schematic view showing the mounting position of the ball screw feeding device and the dynamic balancing device on the flat rotating plate of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • Figure 4 is a side elevational view of the ball screw feeding device of Figure 2;
  • FIG. 5 is a block diagram showing the structure of the signal converter of the present invention. The principles and features of the present invention are described in the following with reference to the accompanying drawings.
  • a precision numerical control rotary rotary lathe includes a rotary disk 10 and a feed slide 11 , and a sliding groove is arranged on the rotary disk 10, and the feeding is performed.
  • the slide plate 11 is mounted in a chute of the flat disc 10, and a ball screw feed device and a dynamic balance device capable of driving the feed slide 11 to perform radial movement are provided on the flat disc 10.
  • the rotary disc 10 is mounted on the spindle 8 via a flange 9.
  • the ball screw feeding device includes a ball screw 14, a motor 12, a belt 13 and a ball screw pair 19, and both ends of the ball screw 14 are fixed to the flat disk 10 via a support bearing 21.
  • the motor 12 is connected to the ball screw 14 via a belt 13 and the ball screw 14 is connected to the feed plate 1 through a ball screw pair 19.
  • the dynamic balancing device includes a weight 18, a weight rope 17, a fixed block 16, and a pulley 20.
  • the pulleys 20 are arranged in pairs, the weight rope 17 is wound around a pair of pulleys 20, the weight 18 is fixed on the outside of the weight rope 17, and the fixed block 16 is fixedly connected with the ball screw pair 19, the weight rope 17 connects the fixed block 16.
  • the ball screw feed device also includes a signal converter 15 that supplies electrical power to the motor 12, the signal converter 15 being mounted at the trailing end of the spindle 8 to effect the conversion of the stationary power signal to the motion power signal.
  • the signal converter 15 is an imported high-end technology product comprising a rotating end 15-1, a stationary end 15-2 and a lead 15-3.
  • the rotating end 15-1 is coaxially connected with the main shaft 8 and rotates with the main shaft, and the stationary end 15-2 remains fixed.
  • On the stationary end there is a lead 15-3 connected to the external power supply, which can be conveniently externally The power signal is converted into power supplied to the motor 12.
  • the working principle of the precision numerical control rotary rotary lathe of the present invention is as follows:
  • the ram 5 is mounted on the base 1 and is moved along the horizontal axis by the driving main screw 4 mounted on the base 1, and the main screw 4 is passed by the main motor 2
  • Coupling 3 drives when the tool is required to move in the radial direction, the lathe control system issues a command to operate the motor 12, and drives the roller screw 14 through the pulley belt 13 to pass the roller wire.
  • the lever pair 19 drives the feed slide 11 to move in the radial direction, and stops feeding after reaching the set value.
  • the spindle 8 is rotated by the spindle motor 6 through the pulley belt 7.
  • the flat-rotary disc mechanism with the ball screw feeding device and the dynamic balancing device according to the present invention can also be applied to rotary cutting machine tools such as horizontal milling, vertical milling, vertical lathe, vertical boring and horizontal boring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Transmission Devices (AREA)

Abstract

一种精密数控平旋车床，它包括平旋盘（10）及进给滑板（11），平旋盘（10）上设有滑槽，所述进给滑板（11）安装在所述平旋盘（10）的滑槽中，在所述平旋盘（10）内设有能带动所述进给滑板（11）做径向运动的滚珠丝杠进给装置及动平衡装置。所述动平衡装置包括配重块（18）、配重绳（17）、固定块（16）及滑轮（20）。由于采用滚珠丝杠（14）传动使得进给滑板（11）的移动位置控制准确，进而使车床的调整非常方便；由于所述动平衡装置的配重块（18）在机床调整时能保持与进给滑板（11）反方向移动，因此能保持平旋盘（10）***的平衡状态，从而减少了机床工作时的振动，有利于工件的加工精度及机床转速的提高；简化了驱动***机构。本发明可完全替代由齿轮齿条驱动的传统数控平旋车床，进而提高工件的加工精度和加工效率。

Description

说 明 书 一种精密数控平旋车床 技术领域 本发明涉及机床领域， 尤其涉及一种精密数控平旋车床。 背景技术 数控平旋车床由于其径向滑板可以在平旋盘上方便的的移动，被广泛的 应用于对工件的切削加工领域。 目前使用的数控平旋车床其滑板的径向滑动 采用齿轮齿条驱动， 即主齿条穿过主轴由设于车床滑枕后部的电机通过丝杠 轴驱动， 主齿条的另一端带动设于平旋盘内的齿轮转动， 并由此齿轮带动设 于滑板上的齿条运动， 进而使滑板在径向上移动。 该驱动结构尚存在较大的 缺陷： 一是由于齿轮齿条间传递动力时的回差较大， 重复定位精度低， 影响 加工效率及工件加工精度； 二是当进给滑板偏向一边时， 造成平旋盘***失 去平衡， 当平旋盘高速旋转时产生振动或冲击， 影响工件加工精度， 或限制 了平旋盘的转速； 三是该机构结构复杂， 装配要求较高。 发明内容 本发明的目的是提供一种精密数控平旋车床， 其定位准确， 使车床的调 整非常方便， 提高了加工效率， 平旋盘***在滑块调整过程中能始终保持较 好的平衡状态， 以解决上述现有技术中存在的不足。
本发明解决上述技术问题的技术方案如下： 一种精密数控平旋车床， 包 括平旋盘及进给滑板， 所述平旋盘上设有滑槽， 所述进给滑板安装在所述平 旋盘的滑槽中，在所述平旋盘上设有能带动所述滑板做径向运动的滚珠丝杠 进给装置。
本发明的有益效果是： 由于采用滚珠丝杠传动使得进给滑板定位准确， 进而使车床的调整非常方便， 提高了加工效率， 并且筒化了驱动***， 省去 了较大的传动装置， 节约了机床制造成本。 在上述技术方案的基础上， 本发明还可以做如下改进。
进一步地， 所述滚珠丝杠进给装置包括滚珠丝杠、 电机、 皮带及滚珠丝 杠副， 滚珠丝杠两端通过支撑轴承固定在平旋盘上。 所述电机通过皮带连接 滚珠丝杠， 所述滚珠丝杠通过滚珠丝杠副连接所述滑板。
进一步地， 所述滚珠丝杠进给装置还包括给电机提供电能的信号转换 器， 所述信号转换器安装在主轴的尾端， 以实现静止电源信号到运动电源信 号的转化。
进一步地， 所述平旋盘上还设有动平衡装置。
进一步地， 所述动平衡装置包括配重块、 配重绳、 固定块及滑轮， 所述 滑轮成对设置， 所述配重绳环绕在所述成对滑轮上， 所述配重块固定在所述 配重绳的外侧， 所述固定块与所述滚珠丝杠副固定连接， 所述配重绳连接所 述固定块。
采用上述进一步技术方案的有益效果是： 由于采用动平衡装置， 使得平 旋盘***在滑块调整过程中能始终保持较好的平衡状态，从而减少了机床的 振动， 有利于工件的加工精度及机床转速的提高。 附图说明
图 1为本发明的精密数控平旋车床结构示意图；
图 2为本发明的滚珠丝杠进给装置和动平衡装置在平旋盘上安装位置示 意图；
图 3为图 2的 A-A向剖视图；
图 4为图 2中滚珠丝杠进给装置的侧视示意图；
图 5是本发明所述的信号转换器结构示意图。 具体实施方式 以下结合附图对本发明的原理和特征进行描述，所举实例只用于解释本 发明， 并非用于限定本发明的范围。
如图 1〜图 4所示， 本发明实施例所述的一种精密数控平旋车床， 包括 平旋盘 10及进给滑板 11 , 在平旋盘 10上设有滑槽， 所述进给滑板 11安装 在平旋盘 1 0的滑槽中， 在平旋盘 1 0上设有能带动进给滑板 11做径向运动 的滚珠丝杠进给装置和动平衡装置。 平旋盘 10通过法兰盘 9安装在主轴 8 上。
所述滚珠丝杠进给装置包括滚珠丝杠 14、 电机 12、 皮带 1 3及滚珠丝杠 副 19 , 所述滚珠丝杠 14两端通过支撑轴承 21固定在平旋盘 10上。
所述电机 12通过皮带 1 3连接滚珠丝杠 14 , 滚珠丝杠 14通过滚珠丝杠 副 19连接进给滑板 1 1。
所述动平衡装置包括配重块 18、 配重绳 17、 固定块 16及滑轮 20。 所 述滑轮 20成对设置， 配重绳 17环绕在一对滑轮 20上， 配重块 18固定在配 重绳 17的外侧， 固定块 16与所述滚珠丝杠副 19固定连接， 配重绳 17连接 固定块 16。
所述滚珠丝杠进给装置还包括给电机 12提供电能的信号转换器 15 , 所 述信号转换器 15安装在主轴 8的尾端， 以实现静止电源信号到运动电源信 号的转化。 如图 1、 图 5所示， 信号转换器 15是一种进口的高端技术产品， 其包括旋转端 15-1、 静止端 15-2及引线 15-3。 所述旋转端 15-1与主轴 8 同轴连接并随主轴旋转， 而静止端 15-2则保持固定不动， 在静止端上有连 接外电源的引线 15-3 ,其可方便的将外电源信号转换成供给电机 12的动力。
本发明的精密数控平旋车床工作原理如下： 滑枕 5安装于底座 1上， 并 通过安装于底座 1上的驱动主丝杠 4带动沿水平轴方向移动，主丝杠 4由主 电机 2通过联轴器 3带动； 当需要刀具在径向移动时， 车床控制***发出指 令使电机 12运行， 并通过带轮皮带 1 3带动滚柱丝杠 14转动， 通过滚柱丝 杠副 19带动进给滑板 11沿径向移动， 达到设定值后停止进给。 主轴 8由主轴电机 6通过带轮皮带 7带动旋转。
本发明所述的具有滚珠丝杠进给装置及动平衡装置的平旋盘机构还可 以运用于卧铣、 立铣、 立车、 立镗、 卧镗等旋转切削类机床。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明 的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发 明的保护范围之内。

Claims

权 利 要 求 书
1. 一种精密数控平旋车床， 包括平旋盘（10)及进给滑板（11), 所述 平旋盘（ 10 )上设有滑槽， 所述进给滑板（ 11 )安装在所述平旋盘（ 10 ) 的 滑槽中， 其特征在于： 在所述平旋盘（10)上设有能带动所述进给滑板（11) 做径向运动的滚珠丝杠进给装置；
2. 根据权利要求 1所述的精密数控平旋车床， 其特征在于： 所述滚珠 丝杠进给装置包括滚珠丝杠（ I4 ) 、 电机（ I2 ) 、 带轮皮带（ I3 )和滚珠丝 杠副（ 19 ) ,所述滚珠丝杠（ 14 )两端通过支撑轴承（ 21 )固定在平旋盘（ 10 ) 上， 所述电机（ I2 )通过皮带 （ I3 )连接滚珠丝杠（ I4 ) , 滚珠丝杠（ I4 ) 通过滚珠丝杠副 （ 19 )连接所述进给滑板（ 11 ) 。
3. 根据权利要求 2所述的精密数控平旋车床， 其特征在于： 所述滚珠 丝杠进给装置还包括给电机（ 12 )提供电能的信号转换器 （ 15 ), 所述信号 转换器 （15)安装在主轴（8) 的尾端， 以实现静止电源信号到运动电源信 号的转化。
4. 根据权利要求 1至 3任一项中所述的精密数控平旋车床， 其特征在 于： 所述平旋盘 （10)上还设有动平衡装置。
5. 根据权利要求 4所述的精密数控平旋车床， 其特征在于： 所述动平 衡装置包括配重块（ 18 )、 配重绳（17)、 固定块（16)及滑轮（20), 所述 滑轮（ 20 )成对设置， 所述配重绳（ 17 )环绕在所述一对滑轮（ 20 )上， 所 述配重块（ 18 ) 固定在所述配重绳（ 17 )的外侧， 所述固定块（ 16 )与所述 滚珠丝杠副 （19) 固定连接， 所述配重绳（17)连接所述固定块（16) 。
PCT/CN2011/083054 2011-06-08 2011-11-28 一种精密数控平旋车床 WO2012167575A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011105246.4T DE112011105246T5 (de) 2011-06-08 2011-11-28 CNC-Präzisionsdrehmaschine für flache Drehung
US14/124,729 US9623530B2 (en) 2011-06-08 2011-11-28 Precision CNC facing lathe

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Application Number Priority Date Filing Date Title
CN2011101514140A CN102218674B (zh) 2011-06-08 2011-06-08 一种精密数控平旋车床
CN201110151414.0 2011-06-08

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WO2012167575A1 true WO2012167575A1 (zh) 2012-12-13

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CN (1) CN102218674B (zh)
DE (1) DE112011105246T5 (zh)
WO (1) WO2012167575A1 (zh)

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