WO2023138278A1 - 一种锻制大型曲拐的组合连体锻模 - Google Patents

一种锻制大型曲拐的组合连体锻模 Download PDF

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Publication number
WO2023138278A1
WO2023138278A1 PCT/CN2022/139766 CN2022139766W WO2023138278A1 WO 2023138278 A1 WO2023138278 A1 WO 2023138278A1 CN 2022139766 W CN2022139766 W CN 2022139766W WO 2023138278 A1 WO2023138278 A1 WO 2023138278A1
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die
forging
mold
trapezoidal
plane
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PCT/CN2022/139766
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English (en)
French (fr)
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张连华
郑介林
张晖
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中聚信海洋工程装备有限公司
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Publication of WO2023138278A1 publication Critical patent/WO2023138278A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/08—Making machine elements axles or shafts crankshafts

Definitions

  • the application relates to a one-piece forging die, in particular to the arrangement of two forging dies with different shapes and different purposes to share a mold body, and belongs to the technical field of mechanical manufacturing.
  • a fuel engine is a device that converts the chemical energy of fuel into mechanical energy.
  • the crankshaft is the main part that converts the reciprocating motion of the engine piston into rotational motion.
  • the crankshaft is a very important component in a large crankshaft. It is subject to large forces and harsh environments, so it must have sufficient rigidity, strength and the ability to withstand impact loads.
  • forged crank throws are usually used, and forging crank throws usually require jaw pressing, upsetting, billet drawing, grooving, bending, and shape finishing.
  • Different processes require different anvil molds. In the traditional large-scale forging crank throw process, since the anvil molds are mostly set in a single piece, the number of anvil molds is large and takes up a lot of space. The process of replacing anvil molds is complicated and takes a long time. The temperature of the forging is dropped, and repeated heating is required to complete the forging process, resulting in low production efficiency, high energy consumption, and high cost.
  • This application proposes a combined conjoined forging die for forging large bell cranks.
  • the combined conjoined forging die is provided with forging dies of different shapes and functions in different parts of the same die body to complete multiple forging steps of forgings.
  • the present application provides a combined conjoined forging die for forging large crank throws
  • the combined conjoined forging die may include a mold body and a die, and is characterized in that:
  • the mold can include: a concave mold and a trapezoidal mold;
  • the concave mold and the trapezoidal mold can be arranged on the same mold body, and the concave mold and the trapezoidal mold can be arranged adjacently;
  • the trapezoidal mold can be formed by connecting three planes, the middle plane is upward, the left side of the left side plane is low, the right side of the left side plane is connected with the left side of the middle plane, the right side of the right side plane is low, and the left side of the right side plane is connected with the right side of the middle plane;
  • the die can be formed by connecting three concave arc surfaces, the middle belt-shaped arc surface is upward, and the left and right sides are crescent-shaped arc surfaces. intersection of points;
  • One end of the left and right side lines of the middle arc surface may be respectively connected with one end of the left and right side lines of the middle plane;
  • connection area between the concave mold and the trapezoidal mold can be set as a shared area between the concave mold and the trapezoidal mold.
  • a transitional arc surface may be provided at the connecting portion between the arc surfaces of the concave mold.
  • a transition arc surface may be provided at the connecting portion between the planes of the trapezoidal mold.
  • a transition arc surface may be provided at the connecting portion between the concave mold and the trapezoidal mold.
  • the length of the common area may be greater than or equal to 15% of the total length of the phantom.
  • the concave die and the trapezoidal die are set on the same die body, and the adjacent area of the two dies is set as a common area, which not only saves materials, but also reduces the occupied space. There is no need to replace the forging die for different forging steps, which can save die cost while improving production efficiency.
  • 1 is a mold body
  • 2 is a concave mold
  • 3 is a trapezoidal mold.
  • FIG. 1 Shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 is the embodiment that die body 2 and trapezoidal die 3 are arranged on same die body 1, and two dies are arranged on the same side of die body 1.
  • the trapezoidal mold 3 is formed by connecting three planes, the middle plane is upward, the left side of the left plane is low, the right side of the left plane is connected with the left side of the middle plane, the right side of the right plane is low, and the left side of the right plane is connected with the right side of the middle plane.
  • Die 2 is connected by three concave arc surfaces, the middle belt-shaped arc surface is upward, the left and right sides are crescent-shaped arc surfaces, the outer arc of the crescent-shaped arc surface is low, and its inner arc edges are respectively connected with the left and right sides of the middle arc surface, and the outer arc line is connected with the mold body. intersection.
  • One end of the left and right sides of the middle arc surface of the die 2 is connected with one end of the left and right sides of the middle plane of the trapezoidal mold 3 respectively.
  • Die 2 and trapezoidal die 3 connected areas are two mold shared areas, when die 2 was used, this area was used as the rear part of die 2, and when trapezoidal die 3 was used, this area was used as a part of trapezoidal die 3.
  • the application relates to a combined conjoined forging die for forging a large crank throw.
  • the concave die and the trapezoidal die are adjacently arranged on the same die body, and the adjacent area is the shared area of the two dies.
  • the trapezoidal mold is composed of three connected planes, the middle plane is upward, the left side of the left plane is low, and the right side of the right plane is low; the concave mold is formed by connecting three concave arc surfaces, the middle belt-shaped arc surface is upward, and the left and right sides are crescent-shaped arc surfaces.
  • the connection area between the die and the trapezoidal die is set as the shared area between the die and the trapezoidal die.
  • the present application at least has the advantages of material saving, space saving, high production efficiency and low production cost.
  • the combined conjoined forging die for forging large crank throws of the present application is reproducible and can be applied in various industrial applications.
  • the combined conjoined forging die for forging large crank throws of the present application can be applied to the technical field of mechanical manufacturing.

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

Abstract

本申请涉及一种锻制大型曲拐的组合连体锻模，将凹模和梯形模相邻设置在同一模体上，相邻区域为两模共用区域。梯形模由三个平面连接构成，中间平面向上，左侧平面的左边低，右侧平面的右边低；凹模由三个下凹的弧面连接构成，中间带状弧面向上，左右两侧为月牙形弧面，其外弧线低，内弧线边分别与中间弧面的左右两边相接，外弧线与所述模体相接。凹模与梯形模相连接区域设置为凹模与梯形模共用区域。本申请至少具有：节约材料、节约空间，生产效率高、生产成本低的优点。

Description

一种锻制大型曲拐的组合连体锻模
相关申请的交叉引用
本申请要求于2022年1月20日提交中国国家知识产权局的申请号为2022201531173、名称为“一种锻制大型曲拐的组合连体锻模”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种连体锻模，具体涉及两种不同形状不同用途的锻模共享模体的设置，属于机械制造技术领域。
背景技术
燃料发动机是将燃料的化学能转化为机械能的设备，曲轴是将发动机活塞往复运动转化为旋转运动的主要零件，曲拐是大型曲轴中非常重要的构件，其受力大且环境恶劣，必须具有足够的刚度、强度和承受冲击载荷的能力。为了满足上述性能要求，通常选用锻制曲拐，而锻制曲拐通常要压钳口、镦粗、拔坯、压槽、弯曲和精整外形等工序，不同的工序要使用不同的砧模，传统锻制大型曲拐工艺中，由于砧模大多是单体设置，因而砧模数量多，占据空间大，造成更换砧模过程复杂、花费时间长，使得锻件温度下降，需要多火次反复加热才能完成锻制工序，导致生产效率低、能耗大、成本高。
发明内容
本申请提出一种锻制大型曲拐的组合连体锻模，组合连体锻模在同一个模体上不同部位设置形状不同功能各异的锻模，完成锻件的多道锻制工步。
为了实现上述目的，本申请提供了一种锻制大型曲拐的组合连体锻模，该组合连体锻模可以包括模体和型模，其特征在于：
所述型模可以包括：凹模和梯形模；
所述凹模和梯形模可以设置在同一模体上，且所述凹模和梯形模可以相邻设置；
所述梯形模可以由三个平面连接构成，中间平面向上，左侧平面的左边低，左侧平面的右边与中间平面的左边相连接，右侧平面的右边低，右侧平面的左边与中间平面的右边相连接；
所述凹模可以由三个下凹的弧面连接构成，中间带状弧面向上，左右两侧为月牙形弧面，所述月牙形弧面外弧线低，其内弧线边分别与中间弧面的左右两边相接，外弧线与所述模体相接，所述左侧月牙形弧面的外弧线、内弧线和中间弧面的左边线在端点相交汇，所述右侧月牙形弧面的外弧线、内弧线和中间弧面的右边线在端点相交汇；
所述中间弧面左右两边线的一端可以分别与所述中间平面左右两边线的一端连接；
所述凹模与梯形模相连接区域可以设置为凹模与梯形模共用区域。
可选地，所述凹模的弧面之间连接部位可以设置过渡弧面。
可选地，所述梯形模的平面之间连接部位可以设置过渡弧面。
可选地，所述凹模与梯形模连接部位可以设置过渡弧面。
可选地，所述共用区域的长度可以大于等于所述模体的总长度的15％。
本设计中，在同一个模体上设置凹模与梯形模，两模相邻区域设置为共用区域，既节约了材料，又减少了占用空间，不同锻制工步无需更换锻制模具，在提高生产效率的同时还能节约模具成本。
附图说明
附图1为本申请的主视结构示意图；
附图2为本申请的俯视结构示意图；
附图3为附图1中A-A截面结构示意图；
附图4为附图1中B-B截面结构示意图。
附图中，1为模体、2为凹模、3为梯形模。
具体实施方式
如附图1、附图2、附图3、附图4所示的是在同一模体1上设置凹模2和梯形模3的实施例，两模设置在模体1的同一侧。
梯形模3由三个平面连接构成，中间平面向上，左侧平面的左边低，左侧平面的右边与中间平面的左边相连接，右侧平面的右边低，右侧平面的左边与中间平面的右边相连接。
凹模2由三个下凹的弧面连接构成，中间带状弧面向上，左右两侧为月牙形弧面，月牙形弧面外弧线低，其内弧线边分别与中间弧面的左右两边相接，外弧线与所述模体相接，所述左侧月牙形弧面的外弧线、内弧线和中间弧面的左边线在端点相交汇，所述右侧月牙形弧面的外弧线、内弧线和中间弧面的右边线在端点相交汇。
凹模2的中间弧面左右两边线的一端分别与梯形模3中间平面左右两边线的一端连接。
凹模2与梯形模3相连接区域为两模共用区域，凹模2使用时，该区域作为凹模2后部分使用，梯形模3使用时，该项区域作为梯形模3的一部分使用。
工业实用性
本申请涉及一种锻制大型曲拐的组合连体锻模，将凹模和梯形模相邻设置在同一模体上，相邻区域为两模共用区域。梯形模由三个平面连接构成，中间平面向上，左侧平面的左边低，右侧平面的右边低；凹模由三个下凹的弧面连接构成，中间带状弧面向上，左右两侧为月牙形弧面，其外弧线低，内弧线边分别与中间弧面的左右两边相接，外弧线与所述模体相接。凹模与梯形模相连接区域设置为凹模与梯形模的共用区域。本申请至少具有：节约材料、节约空间，生产效率高、生产成本低的优点。
此外，可以理解的是，本申请的锻制大型曲拐的组合连体锻模是可以重现的，并且可以应 用在多种工业应用中。例如，本申请的锻制大型曲拐的组合连体锻模可以应用于机械制造技术领域。

Claims (5)

  1. 一种锻制大型曲拐的组合连体锻模，包括模体和型模，其特征在于：
    所述型模包括：凹模和梯形模；
    所述凹模和梯形模设置在同一模体上，且所述凹模和梯形模相邻设置；
    所述梯形模由三个平面连接构成，中间平面向上，左侧平面的左边低，左侧平面的右边与中间平面的左边相连接，右侧平面的右边低，右侧平面的左边与中间平面的右边相连接；
    所述凹模由三个下凹的弧面连接构成，中间带状弧面向上，左右两侧为月牙形弧面，所述月牙形弧面外弧线低，其内弧线边分别与中间弧面的左右两边相接，外弧线与所述模体相接，所述左侧月牙形弧面的外弧线、内弧线和中间弧面的左边线在端点相交汇，所述右侧月牙形弧面的外弧线、内弧线和中间弧面的右边线在端点相交汇；
    所述中间弧面左右两边线的一端分别与所述中间平面左右两边线的一端连接；
    所述凹模与梯形模相连接区域设置为凹模与梯形模的共用区域。
  2. 根据权利要求1所述的一种锻制大型曲拐的组合连体锻模，其特征在于：所述凹模的弧面之间连接部位设置过渡弧面。
  3. 根据权利要求1或2所述的一种锻制大型曲拐的组合连体锻模，其特征在于：所述梯形模的平面之间连接部位设置过渡弧面。
  4. 根据权利要求1至3中的任一项所述的一种锻制大型曲拐的组合连体锻模，其特征在于：所述凹模与梯形模连接部位设置过渡弧面。
  5. 根据权利要求1至4中的任一项所述的一种锻制大型曲拐的组合连体锻模，其特征在于：所述共用区域的长度大于等于所述模体的总长度的15％。
PCT/CN2022/139766 2022-01-20 2022-12-16 一种锻制大型曲拐的组合连体锻模 WO2023138278A1 (zh)

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CN216938230U (zh) * 2022-01-20 2022-07-12 中聚信海洋工程装备有限公司 一种锻制大型曲拐的组合连体锻模
WO2023071375A1 (zh) * 2021-10-28 2023-05-04 中聚信海洋工程装备有限公司 用于锻造大型曲拐的组合砧模

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