阅读说明：本技术 一种弹簧的非卷制成形锻压模具及成形方法 (Non-rolling forming forging die and forming method for spring ) 是由 张贝 李跃松 赫青山 牟娟 于 2021-01-29 设计创作，主要内容包括：本发明提供一种弹簧的非卷制成形锻压模具及成形方法,其中,锻压模具包括第一模具和第二模具,本发明分别通过第一模具和第二模具实现两次锻压工艺,大大简化了弹簧加工的工艺设备,使弹簧的生产在普通的曲柄压力机上就可以实现加工,不需要专用的弹簧加工设备。另外以往的卷制工艺属于类似于碾压或者轧制的工艺方法,而本项发明真正实现了弹簧的锻压工艺方法,形成了弹簧高效率的加工模式,更适合于流水线作业的大批量弹簧零件制造。(The invention provides a spring non-coiling forming forging die and a forming method, wherein the forging die comprises a first die and a second die, and the invention realizes two forging processes through the first die and the second die respectively, thereby greatly simplifying the process equipment for spring processing, enabling the production of the spring to be processed on a common crank press machine and needing no special spring processing equipment. In addition, the prior rolling process belongs to a process method similar to rolling or rolling, but the invention really realizes the spring forging process method, forms a high-efficiency processing mode of the spring and is more suitable for manufacturing large-batch spring parts by flow line operation.)

1. The non-rolling forming forging die for the spring is characterized by comprising the following components:

the first upper die and the first lower die are both composed of a first die holder and a plurality of triangular prism-shaped first die teeth which are arranged on the first die holder at intervals, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged in a staggered mode, die openings for accommodating long steel wires are correspondingly formed in the first die teeth on the first upper die and the first die teeth on the first lower die, and the first upper die and the first lower die are matched with each other and used for forging and pressing the long steel wires to form a snake-shaped spring blank;

the second die comprises a second upper die and a second lower die which are identical in structure, the second upper die and the second lower die are composed of a second die holder and a plurality of second plate-shaped die teeth which are arranged on the second die holder at intervals, the second die teeth on the second upper die and the second die teeth on the second lower die are arranged in a staggered mode, and the second upper die and the second lower die are matched with each other and used for forging and pressing the snake-shaped spring blank into the spring part.

2. The non-coil forming forging die for spring as claimed in claim 1, wherein said second teeth have an arc-shaped top portion, and a width of said arc-shaped portion gradually decreases from a middle portion to both sides thereof.

3. The method of forming a spring roll-less forming forging die set forth in claim 1, comprising the steps of:

step one, placing a long steel wire into die openings formed in a first upper die and a first lower die, and forging the long steel wire into a snake-shaped spring blank through mutual matching of the first upper die and the first lower die;

and step two, the serpentine spring blank formed in the step one is rotated by 90 degrees along the longitudinal axis and then is placed on a second die, and the serpentine spring blank is forged and pressed to form the spring part through mutual matching of a second upper die and a second lower die.

Technical Field

The invention belongs to the technical field of spring rolling forming methods, and particularly relates to a non-rolling forming forging die and a forming method of a spring.

Background

The spring forming method is generally rolling, and rolling needs a special machine tool or equipment, because longitudinal feeding needed by rolling is coupled with rotary motion, the machine tool equipment needs a complex transmission system, and some spring rolling systems need a plurality of mechanical hands to operate. In order to reduce equipment cost and simplify the production process, a simple die needs to be used on relatively universal equipment to adapt to high-efficiency machining of the spring.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a spring non-coiling forming method and a forging mold thereof, wherein the forming method has a few steps and a simple process, and saves the longitudinal feeding time during coiling the spring, thereby forming a high-efficiency spring processing mode.

In order to achieve the purpose, the invention adopts the technical scheme that: an uncoiled spring forming forging die comprising:

the first upper die and the first lower die are both composed of a first die holder and a plurality of triangular prism-shaped first die teeth which are arranged on the first die holder at intervals, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged in a staggered mode, die openings for accommodating long steel wires are correspondingly formed in the first die teeth on the first upper die and the first die teeth on the first lower die, and the first upper die and the first lower die are matched with each other and used for forging and pressing the long steel wires to form a snake-shaped spring blank;

the second die comprises a second upper die and a second lower die which are identical in structure, the second upper die and the second lower die are composed of a second die holder and a plurality of second plate-shaped die teeth which are arranged on the second die holder at intervals, the second die teeth on the second upper die and the second die teeth on the second lower die are arranged in a staggered mode, and the second upper die and the second lower die are matched with each other and used for forging and pressing the snake-shaped spring blank into the spring part.

Further, the top of the second die tooth is arc-shaped, and the width of the arc-shaped part is gradually reduced from the middle to two sides.

A forming method of a spring non-rolling forming forging die comprises the following steps:

step one, placing a long steel wire into die openings formed in a first upper die and a first lower die, and forging the long steel wire into a snake-shaped spring blank through mutual matching of the first upper die and the first lower die;

and step two, the serpentine spring blank formed in the step one is rotated by 90 degrees along the longitudinal axis and then is placed on a second die, and the serpentine spring blank is forged and pressed to form the spring part through mutual matching of a second upper die and a second lower die.

Compared with the prior art, the invention has the beneficial effects that: the invention realizes two forging processes through the first die and the second die respectively, greatly simplifies the process equipment for processing the spring, ensures that the production of the spring can be realized on a common crank press, and does not need special spring processing equipment. In addition, the prior rolling process belongs to a process method similar to rolling or rolling, but the invention really realizes the spring forging process method, forms a high-efficiency processing mode of the spring and is more suitable for manufacturing large-batch spring parts by flow line operation.

Drawings

FIG. 1 is a schematic view of the working state of a first mold according to the present invention;

FIG. 2 is a schematic structural view of a first upper mold or a first lower mold;

FIG. 3 is a schematic view showing the operation of a second mold according to the present invention; (ii) a

FIG. 4 is a schematic structural view of a second upper mold or a second lower mold;

FIG. 5 is a schematic flow chart illustrating a method of forming a spring roll-less forming forging die according to the present invention;

the labels in the figure are: 1. the forming die comprises a first die, 101, a first upper die, 102, a first lower die, 103, a first die holder, 104, first die teeth, 105, a die opening, 2, a second die, 201, a second upper die, 202, a second lower die, 203, a second die holder, 204, second die teeth, 3, a snake-shaped spring blank, 4 and a long steel wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

The principle of the invention is as follows: the invention changes the traditional processing method for rolling and forming the spring, properly relaxes the strict limits of the spring appearance including roundness, spiral lead and the like, and has less influence on the elastic action of the spring, but the high-efficiency processing of low-cost equipment can be realized by a simple process of twice forging and pressing. The original blank of the spring is a long steel wire, the long steel wire is firstly pressed into a snake-shaped spring blank through first forging and pressing, then the snake-shaped spring blank is longitudinally rotated for 90 degrees, and then the spring product is formed through second forging and pressing. The process is few, the process is simple, the longitudinal feeding time during spring rolling is saved, and a high-efficiency spring processing mode is formed.

As shown in fig. 1 to 4, the non-rolling forming forging die for a spring of the present invention comprises:

the first die 1 comprises a first upper die 101 and a first lower die 102 which are identical in structure, wherein each of the first upper die 101 and the first lower die 102 consists of a first die holder 103 and a plurality of triangular prism-shaped first die teeth 104 which are arranged on the first die holder at intervals, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged in a staggered mode, die holes 105 used for containing long steel wires are correspondingly formed in the first die teeth on the first upper die and the first die teeth on the first lower die, and the die holes are semicircular or arc-shaped, the curvature of the die holes is slightly smaller than that of the long steel wires; the first upper die and the first lower die are matched with each other and used for forging and pressing the long steel wire 4 to form a snake-shaped spring blank;

the second die 2 comprises a second upper die 201 and a second lower die 202 which are identical in structure, the second upper die and the second lower die are composed of a second die holder 203 and a plurality of second plate-shaped die teeth 204 which are arranged on the second die holder at intervals, the second die teeth on the second upper die and the second die teeth on the second lower die are arranged in a staggered mode, and the second upper die and the second lower die are matched with each other and used for forging and pressing the serpentine spring blank 3 into a spring part.

For optimal use, the top of the second die tooth 204 is arc-shaped, and the width of the arc-shaped part gradually decreases from the middle to two sides.

A forming method of a spring non-rolling forming forging die is shown in figure 5, and comprises the following steps:

step one, placing a long steel wire 4 into a die opening 105 formed in a first upper die and a first lower die, and forging the long steel wire into a snake-shaped spring blank through mutual matching of the first upper die 101 and the first lower die 102;

and step two, the serpentine spring blank 3 formed in the step one is rotated by 90 degrees along the longitudinal axis and then is placed on the second die 2, and the serpentine spring blank 3 is forged and formed into a spring part through the mutual matching of the second upper die 201 and the second lower die 202.

The invention realizes two forging processes through the first die and the second die respectively, greatly simplifies the process equipment for processing the spring, ensures that the production of the spring can be realized on a common crank press, and does not need special spring processing equipment. In addition, the prior rolling process belongs to a process method similar to rolling or rolling, but the invention really realizes the spring forging process method, forms a high-efficiency processing mode of the spring and is more suitable for manufacturing large-batch spring parts by flow line operation.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.