WO2015027930A1 - 一种数控转塔冲床的伺服冲压主传动装置 - Google Patents

一种数控转塔冲床的伺服冲压主传动装置 Download PDF

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Publication number
WO2015027930A1
WO2015027930A1 PCT/CN2014/085367 CN2014085367W WO2015027930A1 WO 2015027930 A1 WO2015027930 A1 WO 2015027930A1 CN 2014085367 W CN2014085367 W CN 2014085367W WO 2015027930 A1 WO2015027930 A1 WO 2015027930A1
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WO
WIPO (PCT)
Prior art keywords
punch
crankshaft
connecting rod
servo
numerical control
Prior art date
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PCT/CN2014/085367
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English (en)
French (fr)
Inventor
肖军
戚善云
徐波
Original Assignee
江苏亚威机床股份有限公司
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Application filed by 江苏亚威机床股份有限公司 filed Critical 江苏亚威机床股份有限公司
Priority to TR2014/15218T priority Critical patent/TR201415218T1/tr
Publication of WO2015027930A1 publication Critical patent/WO2015027930A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/36—Perforating, i.e. punching holes using rotatable work or tool holders

Definitions

  • the invention relates to a servo punching main transmission device for a numerical control turret punching machine, and belongs to the technical field of a numerical control turret punching device.
  • CNC turret punch press is a highly automated metal stamping and forming equipment. It is mainly used for punching and shallow drawing on sheets. Unlike ordinary presses, CNC turret punch presses
  • the mechanical crank slider mechanism is the most traditional form of mechanical stamping press, consisting of a motor, V-belt, flywheel, clutch, crankshaft, connecting rod and punch.
  • the main motor drives the flywheel to rotate through the V-belt, and stores a certain amount of energy.
  • the flywheel drives the crankshaft linkage mechanism to drive the punch to move up and down, and the clutch controls the separation and combination to complete the required punching.
  • the performance of the clutch directly affects the efficiency and service life of the main drive components.
  • the stroke curve is fixed, the motion characteristics are single, the sectional shifting motion cannot be realized, and the noise and vibration are relatively large.
  • hydraulic main drive Since the 1990s, hydraulic main drive has gradually become the mainstream configuration of CNC turret punch presses.
  • the hydraulic cylinder replaces the mechanical structure such as the crankshaft connecting rod, and the hydraulic station provides power.
  • the two are connected by the main hydraulic valve block, and the operation of the whole system is controlled by a special electronic card program. Accurate control of the position, stroke and speed of the punch is achieved by timely measurement and feedback by an electronic sensor connected to the piston rod of the cylinder.
  • the hydraulic main drive can increase its punching frequency by parameterization, or it can reduce shock and vibration by reducing the speed at which the punch contacts the punched sheet.
  • the hydraulic main transmission has the disadvantages of oil pollution, high energy consumption, and difficulty in maintenance.
  • servo-driven main drives have been successfully applied to CNC turret punch press products from leading foreign companies. Domestic manufacturers have also begun to develop and launch such products.
  • the servo motor-driven main drive is based on the traditional mechanical main drive.
  • the output shaft of the servo motor is connected to the crankshaft through the coupling, eliminating the flywheel, clutch and brake. It not only retains the mature and reliable advantages of the mechanical main drive structure, but also has many characteristics of the hydraulic main drive, and because it has no transmission links such as reducer, flywheel and V-belt, it has low noise, high efficiency and more energy saving.
  • the hydraulic main drive has become the mainstream configuration in the market.
  • the servo motor-driven CNC turret punch press is the main drive, with its advantages of high efficiency, energy saving and environmental protection.
  • the broad development space and application prospects have become a new trend in the development of CNC turret punch presses.
  • the object of the present invention is to provide a servo-punching main drive device of a numerical control turret punch press which is simple and compact in structure, high in transmission efficiency, convenient in disassembly and assembly, low in noise, low in loss and energy-saving.
  • the punch has an inverted convex shape, and the bottom surface of the guiding seat is provided with a middle hole, and the upper end of the punch is sealingly matched with the inner diameter of the guiding seat, and the lower end of the punch is sealingly fitted with the middle hole of the guiding seat, and the lower end side wall of the guiding seat is There are air holes, and the air holes are connected to the air source.
  • the expansion sleeve is a high torque straight cylindrical expansion sleeve.
  • the crankshaft of the invention is directly connected with the rotor of the servo motor through the expansion sleeve, which eliminates the internal bearing and the coupling of the servo motor, the connection unit is reduced, the structure is more compact, and the transmission efficiency is higher.
  • the expansion sleeve is a friction-connecting tool that converts the tightening force of the bolt connection into a surface tension on the inner diameter side through the taper surface.
  • the tightening bolt can be used to simply connect the crankshaft to the motor rotor.
  • the loosening problem does not occur, and the expansion sleeve adopts a high-torque straight column type, because it has two pairs of matching tapered surfaces, so it can withstand higher torque.
  • it is more convenient to use the expansion sleeve connection for disassembly.
  • the inner diameter of the guide seat is sealed with the punch to form a piston-like structure.
  • the high-pressure gas source provides an upward force to the punch through the air hole, and the punch moves upward to eliminate the lower side of the pin and the upper side of the pin and the connecting rod. gap. For the same reason, the gap between the connecting rod and the cylindrical roller bearing and the cylindrical roller bearing and the crankshaft is always biased to one side and the other side is fitted.
  • the high-pressure gas source ensures that the pin and the connecting rod and the punch, the cylindrical roller bearing and the connecting rod and the crankshaft fit tightly throughout the stamping process, thereby eliminating the vibration and noise generated by the gap change during the stamping process. .
  • Figure 1 is a schematic view of the structure of the present invention.
  • 1 is the crankshaft
  • 2 is the connecting rod
  • 3 is the punch
  • 4 is the servo motor
  • 5 is the spherical roller bearing
  • 6 is the bottom plate
  • 7 is the support plate
  • 8 is the cylindrical roller bearing
  • 9 is the pin shaft
  • 10 is the expansion sleeve
  • 11 is the rotor
  • 12 is the guide seat
  • 13 is the air hole.
  • a servo-punching main transmission device for a numerical control turret punch press comprising a crankshaft 1, a connecting rod 2, a punch 3 and a servo motor 4, wherein one end of the crankshaft 1 is mounted on the bottom plate 6 through two spherical roller bearings 5 On the plate 7, the upper end of the connecting rod 2 is connected to the crankshaft 1 through a cylindrical roller bearing 8, the lower end of the connecting rod 2 is connected to the punch 3 through a pin 9, and the other end of the crankshaft 1 is connected to the rotor 11 of the servo motor 4 through the expansion sleeve 10.
  • the punch 3 is located in the guide seat 12 below the support plate 7.
  • the punch 3 of the present invention has an inverted convex shape, and the bottom surface of the guide seat 12 is provided with a middle hole.
  • the upper end of the punch 3 is hermetically fitted with the inner diameter of the guide seat 12, and the lower end of the punch 3 is sealed with the middle hole of the guide seat 12.
  • the lower end side wall of the guide seat 12 is provided with a vent hole 13 communicating with a gas source.
  • the expansion sleeve 10 of the present invention is a high torque straight cylindrical expansion sleeve.
  • the crankshaft 1 of the present invention is directly connected to the rotor 11 of the servo motor 4 through the expansion sleeve 10, eliminating the internal bearing and the coupling of the servo motor 4.
  • the connection unit is reduced, the structure is more compact, and the transmission efficiency is higher.
  • the expansion sleeve 10 is a frictional connection tool, which converts the fastening force of the bolt connection into a surface tension on the inner diameter side surface by a taper surface, and simply connects the crankshaft 1 and the rotor 11 by tightening the bolts. The loosening problem does not occur when used.
  • the expansion sleeve 10 adopts a high-torque straight column type, because it has two pairs of matching tapered surfaces, so it can withstand higher torque. In addition, it is convenient to use the expansion sleeve 10 to connect and detach.
  • the inner diameter of the guide seat 12 is hermetically sealed with the punch 3 to form a piston-like structure.
  • the high-pressure gas source provides an upward force to the punch 3 through the air hole 13, and the punch 3 moves upward to eliminate the lower side of the pin 9 and the pin shaft. 9 and the gap between the upper side of the connecting rod 2.
  • the gap between the connecting rod 2 and the cylindrical roller bearing 8 and the cylindrical roller bearing 8 and the crankshaft 1 is always biased to one side, and the other side is fitted.
  • the high-pressure gas source can ensure that the pin 9 and the connecting rod 2 and the punch 3, the cylindrical roller bearing 8 and the connecting rod 2 and the crankshaft 1 are tightly fitted during the entire punching process, thereby eliminating the gap change during the stamping process. The resulting vibration and noise.
  • the high-speed rotating parts are all connected by cylindrical roller bearings 8 with low friction, low noise, low loss and more energy saving. Can meet the needs of high-speed development.

Abstract

一种数控转塔冲床的伺服冲压主传动装置。包括曲轴（1）、连杆（2）、冲头（3）和伺服电机（4），曲轴（1）一端通过两个调心滚子轴承（5）安装在底板（6）下方的支撑板（7）上，连杆（2）上端通过圆柱滚子轴承（8）与曲轴（1）连接，连杆（2）下端通过销轴（9）与冲头（3）连接，曲轴（1）另一端通过胀套（10）与伺服电机（4）的转子（11）连接，冲头（3）位于支撑板（7）下方的导向座（12）内。数控转塔冲床的伺服冲压主传动装置结构简单紧凑，传动效率高，拆装方便，噪声小，损耗小且节能。

Description

一种数控转塔冲床的伺服冲压主传动装置 技术领域
本发明涉及一种数控转塔冲床的伺服冲压主传动装置， 属于数控转塔冲床 设备技术领域。 说
背景技术
数控转塔冲床是一种自动化程度较高的金属冲压及成型加工设备。 主要用 于在板材上进行冲孔加工及浅拉伸成型。 不同于普通的压力机， 数控转塔冲床
书
的特点是冲头与工作台之间， 有一对可以储存几十套模具的转盘， 板材通过一 次装夹， 可以冲完多个不同形状和不同尺寸的孔。 数控转塔冲床经过近些年来 的应用及发展， 已广泛应用于机械、 电子、 汽车、 军工、 航空航天等多个重要 的领域。
作为冲压动力源的主传动装置， 一直是衡量数控转塔冲床性能的重要标 志， 近五十年的发展历程， 主传动部分也演变了多种结构形式。
机械式曲柄滑块机构是最传统的机械冲压压力机的传动形式， 由电机、 V 带、 飞轮、 离合器、 曲轴、 连杆和冲头组成。 主电动机通过 V 带带动飞轮转 动， 且存储一定的能量， 通过飞轮驱动曲轴连杆机构， 带动冲头作上下往复运 动， 离合器控制其分离与结合， 进而完成所需要的冲压。 离合器的性能直接影 响主传动部件的工作效率和使用寿命。 其行程曲线固定不变， 运动特性单一， 无法实现分段变速运动， 且噪声和振动均比较大。
上世纪九十年代以来， 液压式主传动装置已逐渐成为数控转塔冲床的主流 配置。 与机械式主传动相比， 油缸取代了曲轴连杆等机械结构， 液压站提供动 力， 两者由主液压阀块连接， 通过专门的电子卡程序化控制整个系统的动作， 并由连接于油缸活塞杆上的电子传感器适时测量和反馈， 最终实现对冲头位 置、 行程及速度的精确控制。 液压主传动可以通过参数化设置提高其冲压频 率， 也可以通过降低冲头与冲压板料接触时的速度来减轻冲击和振动。 但液压 主传动装置存在着油污染、 高能耗、 维护困难等缺点。 近年来， 随着大扭 矩伺服电机及驱动系统的改良与推广， 伺服电机驱动式主传动已经被成功应用 于国外领先企业的数控转塔冲床产品中， 国内也有厂家着手研制和推出该类产 品。 伺服电机驱动式主传动是在传统机械式主传动的基础上， 将伺服电机的输 出轴通过联轴器与曲轴相连， 省去了飞轮、 离合器及制动器。 其不仅保留了机 械式主传动结构成熟可靠的优点， 而且具备了液压主传动的诸多特性， 而且由 于其无减速机、 飞轮、 V型带等传动环节， 噪声低， 效率高、 更节能。
目前传统的机械冲压结构已经逐歩淡出历史的舞台， 液压式主传动已经成 为市场的主流配置， 伺服电机驱动式为主传动的数控转塔冲床， 以其高效、 节 能、 环保等优势， 具备了广阔的发展空间和应用前景， 已成为数控转塔冲床发 展的新趋势。
发明内容
针对上述缺陷， 本发明的目的在于提供一种结构简单紧凑， 传动效率高， 拆装方便， 噪声小， 损耗小且节能的一种数控转塔冲床的伺服冲压主传动装 置。
为此本发明所采用的技术方案是：
包括曲轴、 连杆、 冲头和伺服电机， 所述曲轴一端通过两个调心滚子轴承 安装在底板下方的支撑板上， 连杆上端通过圆柱滚子轴承与曲轴连接， 连杆下 端通过销轴与冲头连接， 曲轴另一端通过胀套与伺服电机的转子连接， 冲头位 于支撑板下方的导向座内。
所述冲头呈倒置的凸字形， 导向座底面设有中孔， 冲头上端与导向座的内 径气密封配合， 冲头下端与导向座的中孔气密封配合， 导向座的下端侧壁上设 有气孔， 气孔连通有气源。 所述胀套为高扭矩直柱型胀套。
本发明的优点是：
本发明的曲轴通过胀套与伺服电机的转子直接连接， 省却了伺服电机内部 轴承和联轴器， 连接单元减少了， 结构更为紧凑， 传动效率更高。 胀套是一种 靠摩擦连接的工具， 它将螺栓连接的紧固力通过锥面转换为对内径侧面的表面 张力， 只需要紧固螺栓， 就可以简单的将曲轴与电机转子进行连接， 使用时不 会发生松动问题， 胀套采用高扭矩直柱型， 因为它具有两对相配合的锥面， 所 以能够承受较高的扭矩。 另外， 使用胀套连接拆卸也较为方便。
导向座内径与冲头气密封配合， 形成类活塞结构， 高压气源通过气孔会给 冲头提供一向上的力， 冲头向上运动消除其与销轴下侧以及销轴与连杆上侧的 间隙。 同理， 连杆与圆柱滚子轴承以及圆柱滚子轴承和曲轴的间隙也始终偏向 一侧， 另一侧贴合。 高压气源能够保证在整个冲压过程中， 销轴与连杆及冲 头， 圆柱滚子轴承与连杆及曲轴紧紧贴合， 进而消除在冲压过程中， 由于间隙 变换而产生的振动及噪声。
高速旋转部件均采用圆柱滚子轴承联接， 摩擦力小， 噪声低， 损耗少， 更 节能。 能够满足高速化发展的需求。
附图说明
图 1是本发明的结构示意图。
图中 1是曲轴、 2是连杆、 3是冲头、 4是伺服电机、 5是调心滚子轴承、 6 是底板、 7 是支撑板、 8 是圆柱滚子轴承、 9 是销轴、 10 是胀套、 11 是转 子、 12是导向座、 13是气孔。
具体实施方式
一种数控转塔冲床的伺服冲压主传动装置， 包括曲轴 1、 连杆 2、 冲头 3 和伺服电机 4， 所述曲轴 1一端通过两个调心滚子轴承 5安装在底板 6下方的 支撑板 7上， 连杆 2上端通过圆柱滚子轴承 8与曲轴 1连接， 连杆 2下端通过 销轴 9与冲头 3连接， 曲轴 1另一端通过胀套 10与伺服电机 4的转子 11连 接， 冲头 3位于支撑板 7下方的导向座 12内。
本发明所述的冲头 3 呈倒置的凸字形， 导向座 12底面设有中孔， 冲头 3 上端与导向座 12的内径气密封配合， 冲头 3下端与导向座 12的中孔气密封配 合， 导向座 12的下端侧壁上设有气孔 13， 气孔 13连通有气源。
本发明所述的胀套 10为高扭矩直柱型胀套。
本发明的曲轴 1通过胀套 10与伺服电机 4的转子 11直接连接， 省却了伺 服电机 4 内部轴承和联轴器， 连接单元减少了， 结构更为紧凑， 传动效率更 高。 胀套 10 是一种靠摩擦连接的工具， 它将螺栓连接的紧固力通过锥面转换 为对内径侧面的表面张力， 只需要紧固螺栓， 就可以简单的将曲轴 1与转子 11 进行连接， 使用时不会发生松动问题， 胀套 10 采用高扭矩直柱型， 因为它具 有两对相配合的锥面， 所以能够承受较高的扭矩。 另外， 使用胀套 10 连接拆 卸也较为方便。
导向座 12 内径与冲头 3 气密封配合， 形成类活塞结构， 高压气源通过气 孔 13会给冲头 3提供一向上的力， 冲头 3 向上运动消除其与销轴 9下侧以及 销轴 9与连杆 2上侧的间隙。 同理， 连杆 2与圆柱滚子轴承 8以及圆柱滚子轴 承 8和曲轴 1 的间隙也始终偏向一侧， 另一侧贴合。 高压气源能够保证在整个 冲压过程中， 销轴 9与连杆 2及冲头 3， 圆柱滚子轴承 8与连杆 2及曲轴 1紧 紧贴合， 进而消除在冲压过程中， 由于间隙变换而产生的振动及噪声。
高速旋转部件均采用圆柱滚子轴承 8联接， 摩擦力小， 噪声低， 损耗少， 更节能。 能够满足高速化发展的需求。

Claims

权 利 要 求 书
1.一种数控转塔冲床的伺服冲压主传动装置， 其特征在于， 包括曲轴、 连杆、 冲头和伺服电机， 所述曲轴一端通过两个调心滚子轴承安装在底板下方的支撑 板上， 连杆上端通过圆柱滚子轴承与曲轴连接， 连杆下端通过销轴与冲头连 接， 曲轴另一端通过胀套与伺服电机的转子连接， 冲头位于支撑板下方的导向 座内。
2. 根据权利要求 1所述的一种数控转塔冲床的伺服冲压主传动装置， 其特征在 于， 所述冲头呈倒置的凸字形， 导向座底面设有中孔， 冲头上端与导向座的内 径气密封配合， 冲头下端与导向座的中孔气密封配合， 导向座的下端侧壁上设 有气孔， 气孔连通有气源。
3. 根据权利要求 1所述的一种数控转塔冲床的伺服冲压主传动装置， 其特征在 于， 所述胀套为高扭矩直柱型胀套。
PCT/CN2014/085367 2013-08-29 2014-08-28 一种数控转塔冲床的伺服冲压主传动装置 WO2015027930A1 (zh)

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