KR101284848B1 - Lower arm manufacture for press a method of construction - Google Patents

Abstract

PURPOSE: A press method for manufacturing a lower arm for a car is provided to reduce the number of presses, thereby improving productivity and reducing unit cost. CONSTITUTION: A press method for manufacturing a lower arm for a car includes: a step of implementing a forming process on a lower arm-shaped raw material processed through a blanking process; a step of implementing a cam-piercing process, a piercing process, and a cutting process on the raw material from the forming process; a step of implementing a flanging process, a re-striking process, and a burring process on the raw material; and a step of implementing a cam-cutting process on the raw material from the burring process, and processing the raw material into the lower arm with a completed shape.

Description

LOWER ARM MANUFACTURE FOR PRESS A METHOD OF CONSTRUCTION}

The present invention relates to a press method for processing a lower arm for an automobile, and more particularly, to simplify the processing process of a press for processing a lower arm, thereby reducing energy and reducing production costs, as well as a press for a process. The present invention relates to a press method that can reduce production costs and also reduce production costs and energy.

In general, the suspension of the vehicle is an important device for promoting the ride comfort and driving stability of the vehicle. The main function of such suspension is to stably support the vehicle body from the wheel while suppressing and rapidly reducing the vibration provided from the wheel. Perform.

The basic configuration of such a suspension system is composed of a crossmember, a pair of upper and lower arms, a trailing arm, a shock absorber, and the like, in which the lower arm receives an input load transmitted from a road surface. As it effectively buffers and minimizes the transfer to the vehicle body to improve the ride comfort, as shown in Figure 1, the L-shaped body 10, provided on the body 10 and the bushing 20 and the fastening bolt ( It consists of a burr part 11 in which a through hole to which 30 is coupled is formed.

The lower arm having such a configuration is usually made of a steel forging or a steel press, and thus, a special press is usually made of a steel press.

In addition, the conventional lower arm is manufactured through a press method as shown in FIG.

In other words, the raw material in the form of a lower arm is first supplied through a blanking process, and the supplied raw materials are formed by a forming process, a cam piercing / piercing / cutting process, flanging / listing / bearing process, piercing / cutting / cam The lower arm is obtained through the cutting, burring and cutting / cam cutting processes.

In addition, as shown in FIG. 3 during the process, the six presses are placed in a tandem arrangement, that is, in a series arrangement, and then a worker is put into each device to perform press working with the above-described fixing. Problems that increase the production cost and decrease workability and decrease productivity due to the press machine and the operator input.

In addition to these problems, the lower arm is subjected to repeated boring and piercing processes during burr processing of the lower arm, resulting in high temperature on the burr side and adjacent molds, resulting in product defects and press defects. In order to solve this problem, conventionally, the air nozzle is provided at a position adjacent to the burr part to supply air to the burr part, thereby obtaining a cooling effect, but the cooling effect is deteriorated by the heat of the peripheral part. The problem that cannot solve the above-mentioned problem is caused.

In addition, when supplying raw material in the form of lower arm through the blanking process, it should be supplied on the automatic line at the correct position, but there is a fatal problem that the defect is caused by passing through each process line as a result due to input error. .

An object of the present invention for solving the above problems is to simplify the process of processing the lower arm through the press working, and to reduce the number of presses in the process of simplifying the processing process to improve productivity and production cost In addition to savings, it is possible to effectively prevent overheating generated during the machining process, and in particular, the press method for processing the lower arm for automobiles that can insert the lower arm shaped raw materials put into the automatic processing line at the correct position. In providing.

In order to achieve the above object, according to the present invention, a press method for processing a lower arm for an automobile may be performed by setting an initial position of a lower arm type raw material processed through a blanking process of a press consisting of upper and lower molds through an input system. What is claimed is: 1. A method of fabricating a lower arm, which is processed through the blanking process, for processing into a completed lower arm by feeding an automatic alignment setter to a processing line; Performing piercing, piercing and cutting processes on the raw materials that have passed the forming process; Performing a flanging process, a list-writing process, and a burring process on the raw materials that have passed the cutting process; Cam cutting the raw material that has passed the burring process to process the lower arm of the finished form; In the press method, the lower arm processing of the raw material form is a press for forming, cam piercing and piercing And presses for cutting processes, presses for flanging and list-writing and burring, presses for cam cutting, etc. The mold is characterized in that it is set at the same time through a common plate to perform each process in a shuttle method by pneumatic fingers.

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The lower mold in which the lower arm of the raw material form of the present invention is processed is characterized in that a plurality of air nozzles are installed in order to cool the lower mold as a whole.

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As described above, the present invention consists of four steps, compared to the conventional step for processing the lower arm. The number of presses can also be reduced from six sets to four sets.

As a result, productivity is improved and production cost is reduced, and energy saving can be achieved.

In addition, the air nozzles are evenly mounted on the lower mold to prevent overheating that may occur during the process fixing process, that is, to increase the cooling effect, and to reduce the defect rate by inserting raw material in the form of initial lower arm into the correct position. Will be able to.

1 is a perspective view showing a structure of a general lower arm.
2 is a block diagram showing a process for processing a conventional lower arm.
3 is a configuration view showing an arrangement state of a press used in a conventional lower arm machining process.
Figure 4 is a block diagram showing a lower arm processing process according to the present invention.
5 and 6 are configuration diagrams showing the arrangement of the press used in the lower arm processing process according to the present invention.
7 and 8 is a conceptual diagram and a control diagram of the automatic alignment setting device for setting the position when the lower arm type raw material in the present invention in the automatic line.
9 is a schematic view showing the upper and lower molds of the press according to the present invention.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the press method for processing the lower arm for automobiles according to the present invention.

First, the present invention is a process for processing a raw material in the form of a lower arm processed through a blanking process through a press made of upper and lower molds to a completed lower arm. First, as shown in FIG. 4, a lower processed through a blanking process Forming a female raw material, camping and piercing and cutting the raw material that has passed the forming process, and flanging, list-lining and burring the raw material that has passed the cutting process. And cam-cutting the raw material notified of the burring process to process the lower arm of the completed form.

That is, compared with performing the press working process through the conventional six process, it can be reduced to four processes.

On the other hand, in the raw material of the lower arm type processed through the above-described blanking process, as shown in Figure 7 is automatically supplied to the processing line through the input system 100, as shown in Figure 7 An automatic alignment setter 200 is provided for setting an initial position of.

The automatic alignment setter 200 is controlled through an actuator control input, a Ref control, a PID control, an actuator driver, a sensor / encoder, a high speed up-down counter, a position boundary calculation, and the like as shown in the control diagram of FIG.

In addition, to prevent overheating that may occur in the burrs of the lower arm in the machining process, that is, to increase the cooling effect, the lower mold as a whole is cooled on the lower mold (1) in which the lower arm of the raw material form is processed. The air nozzle 2 for making it is provided in multiple arrangement.

On the other hand, in performing the above-described press method, that is, the machining step, a plurality of presses should be provided.

In other words, the raw material lower arm processing consists of 6 sets including press for forming processing, press for cam piercing and piercing and cutting process, press for flanging and list-writing and burring and press for cam cutting. The press mold is made to pass sequentially.

In this case, each press is not installed in a serial arrangement as in the prior art, but as shown in FIG. 5, the initial four sets of press molds are simultaneously set through a common plate to perform each process by a shuttle method moved by pneumatic fingers. Done.

This will have the effect of reducing the number of settings of the entire press.

However, the present invention is not limited thereto, and as shown in FIG. 6, the lower arm processing in the form of raw materials may be used for pressing, cam piercing and piercing and cutting processes for forming, pressing, flanging and list-lining and burring. 6 sets of press molds are set at the same time through the common plate and perform each process by shuttle method by pneumatic fingers. It is preferable that the press sets for the cam cutting process and the burring process performing the process are integrated and provided in one mold.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1: Lower mold 2: Air nozzle
100: input system 200: automatic alignment setting device

Claims (5)

It is to process raw material of lower arm type processed through blanking process of upper and lower molds to the processing line equipped with automatic alignment setter for setting initial position through input system. Forming a raw material in the form of a lower arm processed through the blanking process; Performing piercing, piercing and cutting processes on the raw materials that have passed the forming process; Performing a flanging process, a list-writing process, and a burring process on the raw materials that have passed the cutting process; In the press method comprising the; step of cam cutting the raw material passed through the burring process to process the lower arm of the completed form;
The lower arm processing of the raw material form is a six-set press, such as a press for forming processing, a press for cam piercing and piercing and cutting process, a press for flanging and wrist-listing and burring, a press for cam cutting It is made by sequentially passing the press mold,
Initial press set of 4 to 6 sets of press molds are simultaneously set through a common plate press method for the lower arm processing for automobiles, characterized in that to perform each process in a shuttle method by pneumatic fingers.
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The lower mold of the lower arm is processed in the raw material form is a press method for processing the lower arm for automobiles, characterized in that a plurality of air nozzles for cooling the lower mold as a whole.
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