WO2015100641A1 - 一体式液压挺柱柱塞及其整体滚压成型方法 - Google Patents

一体式液压挺柱柱塞及其整体滚压成型方法 Download PDF

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Publication number
WO2015100641A1
WO2015100641A1 PCT/CN2013/091172 CN2013091172W WO2015100641A1 WO 2015100641 A1 WO2015100641 A1 WO 2015100641A1 CN 2013091172 W CN2013091172 W CN 2013091172W WO 2015100641 A1 WO2015100641 A1 WO 2015100641A1
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Prior art keywords
plunger
roll forming
hydraulic tappet
forming method
integrated hydraulic
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PCT/CN2013/091172
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English (en)
French (fr)
Inventor
徐纳
Original Assignee
杭州新坐标科技股份有限公司
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Priority to PCT/CN2013/091172 priority Critical patent/WO2015100641A1/zh
Publication of WO2015100641A1 publication Critical patent/WO2015100641A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/18Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/18Making machine elements pistons or plungers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245Hydraulic tappets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2303/00Manufacturing of components used in valve arrangements

Definitions

  • the invention belongs to the technical field of cold forming, and particularly relates to a method for integrally rolling a part-to-one hydraulic tappet plunger in a hydraulic lash adjuster in an automobile engine.
  • Hydraulic tappet Main body, plunger, steel ball, retaining spring, bracket, return spring, with automatic compensation of valve clearance (gap adjustment of valve valve assembly variable during engine assembly, gap adjustment when engine is hot)
  • the gap adjustment of the engine loss and the automatic clearance adjustment can eliminate the noise between the valve parts, and no need to adjust the gap of the valve mechanism. Because the product is a hydraulic piston, the product's external dimensions and shape tolerances are very high.
  • the split plunger is the product that is divided into two parts and processed separately.
  • Forming mill or car forming plunger means that the outer dimensions are processed by a profile grinding or turning process.
  • the object of the present invention is to provide an integrated plunger with simple structure and convenient processing and a processing and molding method thereof under the premise of ensuring the function of using the product, and the program can reduce the investment of the plunger production equipment and improve the column. Plug production efficiency.
  • the resulting one-piece plunger has a higher overall strength and service life than prior art plungers.
  • the integrated hydraulic tappet plunger comprises a cylindrical body, the body has a hemispherical ball portion at one end, a rod portion in the middle, and a main body portion at the other end, and a first ring groove between the ball portion and the rod portion, the rod portion A second annular groove is included between the main body and the second annular groove, and the second annular groove includes a fluid port.
  • the ball portion, the rod portion and the main body portion are integrally formed, and the wall thicknesses of the three are equal.
  • An integrated hydraulic tappet plunger integral rolling forming method characterized in that the method comprises the following steps: forming a plunger blank shape by an integral cold head extrusion molding method;
  • the finished plunger is formed by integral roll forming.
  • the overall roll forming method comprises the following steps:
  • the plunger blank to be processed is placed between the movable mold and the static mold, and the twisting machine is opened, and the movable mold is moved from left to right, thereby driving the plunger blank rolling forming, and the moving mold and the static mold contain the diameter and the column.
  • the static mold contains a guiding bevel for guiding the plunger blank to properly seat the intermediate card slot (see 30 in FIG. 6).
  • the plunger integrated structure and integral roll forming technique of the present invention have the beneficial effects of a split plunger and a profiled or car formed plunger in:
  • the production equipment is small.
  • Figure 2 is a forming mill or a car forming plunger
  • Figure 3 is a plunger blank type of the present invention
  • Figure 4 is a schematic view of the overall roll forming
  • Figure 5 is a finished view of the integrated plunger.
  • FIG. 6 is a schematic view showing the structure of a plunger roll forming of the present invention.
  • the integrated plunger structure of the present embodiment is as shown in FIG. 5.
  • the plunger body 1 is composed of a ball portion 11, a rod portion 12 and a main body portion 13, and the thickness of the three is uniform, and the plunger blank type is rolled by FIG. Made.
  • the first is the extrusion of the part, which is made into a plunger blank type (Fig. 3).
  • the size and precision are controlled by the cold heading die.
  • the second step is the rolling of the plunger blank (Fig. 4).
  • the principle of roll forming is to make two forming molds (moving mold 2 and static mold 3), and place the plunger blank to be processed between the movable mold 2 and the static mold 3.
  • a guide bevel 30 is provided at the entrance of the static mold 3 to assist the plunger blank into the mold, the static mold 3 is stationary, and the movable mold 2 is moved from left to right.
  • the plunger blank type is extended in the left and right directions by being squeezed by the side press plates (the one side press plate is stationary, and the other side press plate is moved, that is, the movable mold and the static mold).
  • the product cannot extend upward or downward as a whole, but extends in two directions.
  • the height of the boss 3 of the static mold 3 is designed to be a gradual unequal ratio decreasing surface 32, which can absorb the deformation amount when the plunger blank is rolled, and the upper ball, 11 becomes full due to the extension of the product.
  • the product is fully affixed to ensure that the contour size of the product is consistent with the size of the mold (see Figure 6).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)

Abstract

一种一体式液压挺柱柱塞,包括一个圆筒状的本体(1),本体一端为一半球形球部(11),中间为杆部(12),另一端为主体部(13),球部和杆部之间含有第一环槽(14),杆部与主体部之间含有第二环槽(15),第二环槽内含一个流体口(16),所述球部(11)、杆部(12)和主体部(13)一体成型,三者的壁厚均相等。所述一体式液压挺柱柱塞整体滚压成型方法,由以下步骤组成:采用整体式冷镦挤压成型方法制成柱塞坯型;采用整体滚压成型方法制成成品柱塞。

Description

一体式液压挺柱柱塞及其整体滚压成型方法 技术领域
[0001] 本发明属于冷成型技术领域, 具体涉及汽车发动机内液压间隙调节器中零件一一一 体式液压挺柱柱塞整体滚压成型方法。
背景技术
[0002] 液压挺柱: 本体、 柱塞、 钢球、 保持弹簧、 支架、 回复弹簧组成, 具有自动补偿气 门间隙作用 (发动机装配时气阀机构装配变量的间隙调节、 发动机热变时的间隙调节、 发动 机损耗的间隙调节、 自动的间隙调节可以消除气阀零件之间的噪音, 无需再进行气阀机构的 间隙调整)。 因为产品为液压活塞件, 所以对产品的外型尺寸及型位公差要求很高。
[0003] 现有液压挺柱柱塞结构和加工工艺分为以下两种:
1、 分体式柱塞
分体式柱塞就是产品分成两个零件分别加工成型。
[0004] 优点: 分体式柱塞因为是由两个零件组成的, 所以在单独加工单个零件的时候加工 难度降低。
[0005] 缺点: 需要对这两个零件分别加工。 生产设备将会成倍的增加, 特别是两产品配合 端面的要求很高, 如果两两面不平时, 会造成产品倾斜, 进而造成产品在本体内卡置, 影响 产品的使用功能。
[0006] 2、 成型磨或车成型柱塞
成型磨或车成型柱塞是指外形尺寸通过成型磨削或车削成型工艺加工完成。
[0007] 成型磨加工优点: 产品精度高, 容易控制。
[0008] 成型磨加工缺点: 设备投入大, 加工节拍慢, 降低产品刚度, 浪费材料。 车削成型 加工优点: 加工难度低。
[0009] 车削成型加工缺点: 设备投入大, 加工节拍慢, 产品尺寸变动大, 降低产品刚度, 浪费材料。
发明内容
[0010] 本发明的目的在于在保证产品使用功能的前提下, 提供一种结构简单, 加工成型方 便的一体式柱塞及其加工成型方法, 该方案能减少柱塞生产设备的投入, 提高柱塞的生产效 能。 得到的一体式柱塞相对于现有技术的柱塞具有更高的整体强度和使用寿命。
[0011] 为实现上述目的, 本发明采用如下技术方案: 一体式液压挺柱柱塞, 包括一个圆筒状的本体, 本体一端为一半球形球部, 中间为杆部, 另 一端为主体部, 球部和杆部之间含有第一环槽, 杆部与主体部之间含有第二环槽, 第二环槽 内含一个流体口, 其特征在于所述球部、 杆部和主体部一体成型, 三者的壁厚均相等。
[0012] 一体式液压挺柱柱塞整体滚压成型方法, 其特征在于该方法由以下步骤组成: 采用整体式冷镦挤压成型方法制成柱塞坯型;
采用整体滚压成型方法制成成品柱塞。
[0013] 所述整体滚压成型方法包括以下步骤:
将待加工的柱塞坯型放在动模和静模之间, 开启搓丝机, 动模由左向右运动, 从而带动柱塞 坯型滚压成型, 动模和静模含有直径与柱塞坯型直径一致的中间卡槽, 其中, 静模表面含有 用于第一环槽和第二环槽滚压成型的凸台, 该凸台为渐变不等比递减面, 递减面曲线公式 为: Y=-sqr(xA0.2)+l ; xl=l,x2=50。
[0014] 所述静模含有用于引导柱塞坯型正确就位中间卡槽的导引斜面 (见图 6中的 30)。
[0015] 与分体式柱塞和成型磨或车成型柱塞相比, 本发明的柱塞一体式结构和整体滚压成 型技术有益效果在于:
1、 生产设备投入小。
[0016] 2、 产品一致性好。
[0017] 3、 所需材料减少, 降低材料成本。
[0018] 4、 减少生产工艺, 减少人力资源成本。
[0019] 5、 避免产品因为是分体式可能造成的卡置。
附图说明
[0020] 图 1是分体式柱塞
图 2是成型磨或车成型柱塞
图 3是本发明的柱塞坯型;
图 4是整体滚压成型示意图;
图 5是一体式柱塞成品图。
[0021] 图 6是本发明柱塞滚压成型结构示意图。
[0022] 其中, 柱塞本体 1, 动模 2, 静模 3, 中间卡槽 4, 球部 11, 杆部 12, 主体部 13, 第 一凹槽 14, 第二凹槽 15, 流体口 16, 引导斜面 30, 凸台 31, 渐变不等比递减面 32。
具体实施方式
[0023] 下面结合附图对本发明的具体实施方式作进一步说明。 [0024] 本方案一体式柱塞结构如图 5所示, 柱塞本体 1 由球部 11、 杆部 12和主体部 13组 成, 三者厚度一致, 由图 3所示柱塞坯型滚压而成。
[0025] 一体式柱塞的成型过程分两步:
首先是零件的挤压成型, 做成一个柱塞坯型 (图 3), 其尺寸和精度由冷镦模具来控制保证; 第二步是柱塞毛坯的滚压 (图 4), 利用搓丝机滚压成型原理, 做两块成型模具 (动模 2和静 模 3), 把待加工的柱塞坯型放在动模 2和静模 3之间。 静模 3入口处有导引斜面 30, 以帮 助柱塞坯型入模, 静模 3静止, 动模 2由左向右运动。
[0026] 在动模 2 运动过程中, 柱塞坯型因为受两侧压板 (一侧压板静止, 另外一侧压板运 动, 即是动模和静模) 的挤压而向左右两个方向延展, 又因为受到中间卡槽 4的限位作用, 致使产品不能整体向上或向下延伸, 而是分别向两个方向延展。
[0027] 此时, 静模 3凸台 31高度设计为渐变不等比递减面 32, 可以吸收掉柱塞坯型滚压时 的变型量, 上面的球, 11 因为产品的延展而变的饱满, 这时产品充分的贴模, 保证产品的轮 廓尺寸和模具成型尺寸一致 (见图 6) 。

Claims

权 利 要 求 书
1. 一体式液压挺柱柱塞, 其特征在于该柱塞包括一个圆筒状的本体, 本体一端为一半球形 球部, 中间为杆部, 另一端为主体部, 球部和杆部之间含有第一环槽, 杆部与主体部之间含 有第二环槽, 第二环槽内含一个流体口, 所述球部、 杆部和主体部一体成型, 三者的壁厚均 相等。
2. 一体式液压挺柱柱塞整体滚压成型方法, 其特征在于该方法由以下步骤组成:
采用整体式冷镦挤压成型方法制成柱塞坯型;
采用整体滚压成型方法制成成品柱塞。
3. 根据权利要求 2 所述一体式液压挺柱柱塞整体滚压成型方法, 其特征在于包括以下步 骤:
将待加工的柱塞坯型放在动模和静模之间, 开启搓丝机, 动模由左向右运动, 从而带动柱塞 坯型滚压成型, 动模和静模含有直径与柱塞坯型直径一致的中间卡槽, 其中, 静模表面含有 用于第一环槽和第二环槽滚压成型的凸台, 该凸台为渐变不等比递减面, 递减面曲线公式 为: Y=-sqr(xA0.2)+l ; xl=l,x2=50。
4. 根据权利要求 2所述一体式液压挺柱柱塞整体滚压成型方法, 其特征在于所述静模含有 用于引导柱塞坯型正确就位中间卡槽的导引斜面。
PCT/CN2013/091172 2013-12-31 2013-12-31 一体式液压挺柱柱塞及其整体滚压成型方法 WO2015100641A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2522220Y (zh) * 2002-01-16 2002-11-27 张松岳 用于圆轴类零件表面滚压加工的搓滚装置
CN201228569Y (zh) * 2006-04-13 2009-04-29 谢夫勒两合公司 内燃机气门机构杆形凸轮随动件的液压支撑件
US7900591B2 (en) * 2007-10-10 2011-03-08 Schaeffler Kg Switchable component for a valve train of an internal combustion engine
DE102010047138A1 (de) * 2010-09-30 2012-04-05 Schaeffler Technologies Gmbh & Co. Kg Durckmittelführendes Motorelement einer Brennkraftmaschine
CN102788154A (zh) * 2012-08-17 2012-11-21 杭州新坐标科技股份有限公司 一体式液压挺柱柱塞及其整体滚压成型方法
CN202901264U (zh) * 2012-08-17 2013-04-24 杭州新坐标科技股份有限公司 一体式液压挺柱柱塞及其模具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2522220Y (zh) * 2002-01-16 2002-11-27 张松岳 用于圆轴类零件表面滚压加工的搓滚装置
CN201228569Y (zh) * 2006-04-13 2009-04-29 谢夫勒两合公司 内燃机气门机构杆形凸轮随动件的液压支撑件
US7900591B2 (en) * 2007-10-10 2011-03-08 Schaeffler Kg Switchable component for a valve train of an internal combustion engine
DE102010047138A1 (de) * 2010-09-30 2012-04-05 Schaeffler Technologies Gmbh & Co. Kg Durckmittelführendes Motorelement einer Brennkraftmaschine
CN102788154A (zh) * 2012-08-17 2012-11-21 杭州新坐标科技股份有限公司 一体式液压挺柱柱塞及其整体滚压成型方法
CN202901264U (zh) * 2012-08-17 2013-04-24 杭州新坐标科技股份有限公司 一体式液压挺柱柱塞及其模具

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