KR20160145934A

KR20160145934A - Fixing housing manufacturing method for vehicle frame component

Info

Publication number: KR20160145934A
Application number: KR1020150082308A
Authority: KR
Inventors: 김규기
Original assignee: 김규기
Priority date: 2015-06-11
Filing date: 2015-06-11
Publication date: 2016-12-21

Abstract

The present invention relates to a method of manufacturing a fastening housing for a vehicle frame structure in which a plurality of fastening housings constituting a left-right symmetrical structure for connecting and fixing a side member and a cross member constituting a frame of a vehicle are simultaneously produced in a single mold .
A separation space 63 is formed in the front and rear direction of the central part and the left and right sides are separated so as to be integrally formed by a connecting piece 62 connected to the central part of a plurality of the raw steel plates 60, A plurality of raw steel plates 60 symmetrical to each other are formed integrally with the connecting pieces 62 by forming blank steel plates 60 integrally formed with the projecting pieces 61 protruding from the blanking molds by a blanking operation A blanking blanking step (P1) constituting the blanking step; A double row forming process P2 in which the symmetrical raw steel sheet 60 produced by the double row blanking process P1 is placed on the forming die and the main housing 10 and the side housing 20 are simultaneously formed through a molding operation, and; (P3) for cutting scraps held on both ends of a plurality of coupling housings (1) formed by symmetrically forming the main housing (10) and the side housing (20) through the double row forming process (P2); A plurality of clamping housings 1 from which the scrap has been removed through the returning trimming process P3 are seated on the lifting mold so that necessary clamping holes 50 are formed at the upper end of the main housing and the connecting pieces 62 formed at the center are simultaneously removed And the proceeding refreshing step P4 are sequentially performed.

Description

Technical Field [0001] The present invention relates to a method of manufacturing a fastening housing for a frame of a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a fastening housing for a vehicle frame, and more particularly, to a method of manufacturing a fastening housing for a vehicle frame, which comprises a plurality of fastening housings, To a method of manufacturing a fastening housing for constructing a vehicle frame.

A frame structure of a general vehicle has a structure in which a plurality of cross members are held at a predetermined interval between a plurality of side members held in a longitudinal direction at a lower end portion of a vehicle to fasten the end portions of the cross members and the side members to the fastening housing, (See Fig. 7).

Since the fastening housing 1 connecting the side member and the cross member is formed at both ends of the cross member, the fastening housing 1 has a symmetrical structure. The fastening housing 1 has a lower end portion and both side surfaces A side fixing piece 21 which is in close contact with one side surface of the side member and a top fixing piece 22 which is in close contact with the upper surface of the side member is formed on one side surface of the main body housing 10 And the side housings 20 constituted at right angles are integrally formed.

In order to improve the durability of the fastening housing, a rim 30 integrally extending from the outside of both side lower end portions of the main body housing 10 and the lower end portions of the side fastening pieces 21 of the side housing 20 is formed, A rib 40 protruding or recessed from the upper end surface of the main body housing 10 and the upper end fixing piece 22 may be formed or one or more fastening holes 50 may be formed at the center of the upper end of the main housing 10 . (See Fig. 2)

The plurality of coupling housings 1, which are symmetrically configured as described above, are sequentially produced through a press die using a steel plate of a predetermined thickness as a material. In the conventional manufacturing process, A plurality of press dies are constituted to perform respective production processes individually.

That is, first, a cutting step (CUT) for cutting an iron plate maintaining a constant thickness to a required area according to the size of the fastening housing, a step for cutting a raw steel sheet formed by cutting through a cutting step (CUT) A secondary drawing process (2DR) in which the primary raw material is first placed in the secondary draw die in the primary drawing process (1DR), and then secondary molding is performed to complete the draw forming; and a secondary drawing process (TR) for completing the trimming operation for cutting the scraps of the end portion of the molding material finished by the molding machine (2DR), and a fastening hole (50) for the body housing (10) formed through the trimming step (TR) (PI) to form a fastening housing (see Fig. 4)

In this case, when the fastening housing is produced through the ordinary silver process, two molds are required for each process in order to produce a fastening housing composed of left and right symmetry, so that the investment cost of the mold is increased. Respectively, and the productivity is significantly lowered since they each produce a symmetrical fastening housing.

In addition, since the drawing process is a process of forming a required main body housing, a side housing and a frame in a state in which the end portion of the steel plate is pressed on the drawing die by forming a large area of the steel plate as a raw material of the fastening housing, It can be seen that there is a fundamental problem in that it is necessary to keep the margin area larger than the area larger than four

That is, as shown in FIG. 5, a large iron plate having an area not less than the area required for producing the fastening housing is prepared as a raw material, a fastening housing having a required shape is formed through a drawing process, and an end portion deviating from the shape of the fastening housing is cut The cost of the material other than the raw material for producing the product is increased and the amount of scrap generated after the production of the fastening housing is increased, There are various problems such as an increase in the incidence of defects occurring in the draw process and the trimming process as well as problems such as an additional additional cost for collecting the product, but the automobile related companies and the mold related companies have not offered any solution until now In fact there is.

KR Patent No. 10-1178988 KR Patent No. 10-1195748

In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a pair of right and left fastening housings, Which can be used as a mold for forming a fastening housing for a frame structure of a vehicle, which is capable of producing a fastening housing through a minimum process to improve raw material cost, productivity and quality, And to provide a method of manufacturing the same.

A separating space 63 is formed in the front and rear direction of the central part and is connected to a central part of a plurality of the raw steel plates 60 separated from each other by left and right sides by a connecting piece 62, A plurality of raw steel plates 60 symmetrical with each other are formed integrally by the connecting pieces 62 by molding a single piece of the raw steel plate 60 symmetrically forming the projecting pieces 61 protruding therefrom by a blanking operation in the blanking mold A blanking blanking step P1;

A double row forming process P2 in which the symmetrical raw steel sheet 60 produced by the double row blanking process P1 is placed on the forming die and the main housing 10 and the side housing 20 are simultaneously formed through a molding operation, and;

(P3) for cutting scraps held on both ends of a plurality of coupling housings (1) formed by symmetrically forming the main housing (10) and the side housing (20) through the double row forming process (P2);

A plurality of clamping housings 1 from which the scrap has been removed through the returning trimming process P3 are seated on the lifting mold so that necessary clamping holes 50 are formed at the upper end of the main housing and the connecting pieces 62 formed at the center are simultaneously removed And the proceeding cleaning process P4 are successively carried out in order to quickly and precisely produce a fastening housing for constructing a vehicle frame.

As described above, the method of manufacturing a fastening housing for frame construction of a vehicle according to the present invention can reduce the number of production steps for producing a plurality of fastening housings in a single work step by constituting an integral mold constituting a plurality of symmetrically formed molding parts In order to minimize the investment cost of the production facility due to the mold cost, it is necessary to minimize the raw material to reduce the raw material cost. To reduce the production cost, improve the productivity and improve the quality, And the like.

In addition, it is possible to produce high quality and safe car at low cost by producing a housing with high quality by improving productivity and cost, The advantage with its advantage is that it is a very big invention with high expectations.

1 is a block diagram of a manufacturing process showing a preferred embodiment of the present invention.
2 is a perspective view of a fastening housing showing a preferred embodiment of the present invention.
FIG. 3 is a process configuration diagram sequentially showing a configuration of a workpiece according to a manufacturing process state shown in a preferred embodiment of the present invention. FIG.
Fig. 4 is a diagram showing an operation example of a forming mold showing a preferred foaming step of the present invention. Fig.
FIG. 5 is a block diagram of a manufacturing process showing a typical conventional one embodiment; FIG.
6 is a photograph of a deformed state of a fastening housing produced in a conventional manufacturing method.
Fig. 7 is a frame structure view of a vehicle in which a typical fastening housing shown in a preferred embodiment is constructed. Fig.

2, a main body housing 10 constituting a fastening space 11 in which a lower end portion and both side surfaces communicate with each other so as to insert an upper end portion and both side surfaces of a cross member, A side fixing member 21 which is in close contact with one side surface of the side member and a side fixing member 20 which is perpendicular to the upper fixing member 22 in close contact with the side member upper surface, A frame 30 extending integrally from the outer side is formed at both side lower outer side portions and the lower end portions of the side fixing pieces 21 of the side housing 20 and if necessary the upper end surface center portion of the main housing 10 and the upper fixing piece (1) having a known shape in which at least one fastening hole (50) is formed at the center of the upper end of the main housing (10), or a rib (40) As follows It would be desirable to produce by the crude method.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 3, a separation space 63 is formed in the front-rear direction of the central portion, and the separation plate 63 is connected to a central portion of a plurality of the circular iron plates 60, And a protruding piece 61 protruding outward in the forward and backward directions is symmetrically formed on both side edges of the base metal plate 60. The base metal plate 60 is formed by a blanking operation in a blanking mold, (P1) which integrally comprises a connecting piece (60) by a connecting piece (62);

In this case, the construction of the fastening housing produced by each of the above processes is the same as that of the conventional structure, and the mold for performing each of the above processes is a means for achieving the present invention, The detailed description of the constitution and the operation thereof will be omitted or briefly explained as necessary, and the same name shall be described with a single code as the unified description.

First, in the double row blanking step P1, the separation space 63 is formed in the front-rear direction of the central part, and the sheet is integrally formed by connecting the center of a plurality of the raw steel plates 60 separated by the right and left sides by a connecting piece 62 A plurality of raw steel plates 60 symmetrically formed by forming blank steel plates 60 of a single piece by symmetrically forming protruding pieces 61 protruding outward in forward and backward directions at both side edges thereof by a blanking operation in a blanking mold, (62) to complete a plurality of symmetrical raw steel plates (60).

In this case, by forming the connecting piece 62 at the central portion, a plurality of symmetrical raw steel plates 60 can be integrally formed, while the reference is formed during the forming process, which is a subsequent process, The protruding piece 61 is an important constitution for not only facilitating the molding of the side fixing piece 21 and the connecting piece 62 during the forming process which is a subsequent process but also for forming the end portion clearly after molding, It is understood that the protrusion amount and shape are important components in the present invention which can be easily configured according to the shape and size of the fastening housing to be produced.

In the double row forming process P2, the integrally formed symmetrically formed original steel sheet 60 produced by the double row blanking process P1 is placed on the forming mold and the forming process is carried out through the forming process of the main housing 10 and the side housing 20 ) At the same time.

5, the lower mold 70 is composed of a lower moving block 72 configured to move up and down symmetrically in the front-rear direction of the lower fixed block 71 constituted by the left and right longitudinal sides of the center portion, A lower mold (2) of a forming mold (2) formed of a top mold (80) composed of an upper fixed block (82) symmetrically fixed in the longitudinal direction of the upper moving block (81) The original iron sheet 60 is placed on the upper end of the center of the lower mold 70 and then the upper iron sheet 80 is lowered and the original iron sheet 60 seated on the lower mold 70 is fastened in the form of a fastening housing 1 So that the molding process is performed.

The lower movable block 72 of the lower mold 70 is held by the elastic body S at the same height as the lower fixed block 71 and the original steel plate 60 is fixed to the lower movable block 72 and the lower fixed block 71, The upper die 80 is lowered in a state in which the upper die 80 is brought into close contact with both the central portion of the raw steel plate 60 and the longitudinally opposite ends in the longitudinal direction, The upper movable block 81 presses the upper surface of the raw steel plate 60 while applying pressure to the elastic body S, and the upper fixed block located in the front and rear direction of the center portion moves forward and backward of the center of the raw steel plate 60 And the lower side moving block 72 is lowered in a state in which the lower side moving block 72 is brought into close contact with the lower moving block 72 so that the front and rear sides of the central portion of the raw iron plate 60 are lowered. The material properties of the raw material steel plate 60 to be formed by the material It is necessary to apply the method according to the stress and the crack value according to the strain modulus and to construct the optimum curved surface by adjusting the repair and bending steps and the fine and precise round values according to the material of the mold itself. The detailed description thereof will be omitted.

At this time, the ribs 40 formed to form the durability of the raw steel plate 60 are formed by protruding or recessing the close contact surfaces of the lower fixing block 71 and the upper moving block 81, If the shape of the separation space 63 is formed so as to become narrower from the center toward the outer end when forming the recess 60, the end portion is widened by the expanding action which is increased in the process of descending downward in the foaming process, The protruding piece 61 protruding outwardly at the corner of the original steel plate 60 is also formed in the shape of the forming housing 1 by the structure and action of the forming metal mold It is understood that the side fastening piece 21 and the rim 30 of the side housing 20 are easily formed.

In addition, the rewarming trimming process P3 is performed by the scrap 90 held at both ends of the plurality of fastening housings 1 formed by symmetrically forming the main housing 10 and the side housing 20 through the double row forming process P2. Is cut.

As described above, the re-order trimming process P3 is a part of the area forming the opposite end portions of the original steel plate 60 symmetrically formed in the double row blanking process P1 to proceed the double row forming process P2, In the process P2, both ends of the original steel plate 60 are subjected to double row forming with an allowance area for easily and safely forming the side housing 20 composed of the upper fixing piece 22 and the side fixing piece 21, A large area change is made during the process P2 so that the allowable area is maintained in consideration of this, and the area of the forming block 2, which is in close contact with the lower fixing block 71 and the upper moving block 81, The area required to fill the double row forming process P2 with the allowance area necessary for minimizing the optional deformation of the raw steel sheet 60 during the forming process is not a component of the fastening housing 1, The It can be seen the need for a priming step (P3).

In the refolding step P4, a plurality of clamping housings 1 from which scrap has been removed through the re-trimming step P3 are seated on the refolding mold, and the necessary fastening holes 50 are formed on the upper end of the main housing, And the final processing step of producing the fastening housing 1 in which the removal of the formed connecting piece 62 is performed simultaneously.

That is, the fastening housing 1 is formed symmetrically through the returning trimming process P3 so as to facilitate fastening of the cross member with the cross member at the center of the main housing 10, The connecting pieces 62 connecting symmetrically and integrally formed fastening housings 1 are removed to form a plurality of independent fastening housings 1, As shown in FIG.

At this time, the connection piece 62 has a function of making a plurality of components simply constitute one integral type, and a symmetrical raw steel plate 60 is formed in the shape of the fastening housing 1 by the double row forming process P2 Which is generated during the process of being formed while being a reference point of the raw material steel plate 60, to be a center point of the stress generated in the forming deformation force, so that the deformation can be stably performed. But it can be seen that the finished fastening housing 1 is an essential fix that must be removed as an unnecessary component.

The piercing process for forming the fastening hole 50 through the folding process P4 and the sharpening process P4 for cutting and removing the connecting piece 62 are simultaneously performed.

If the fastening housing 1 is produced step by step through each of the molds, it is possible to separate from the conventional production process of producing each of the two molds, It is a production process that minimizes the production of the fastening housing for assembly in a single operation process. It minimizes the investment cost of the production facility due to the mold cost, minimizes the raw material and reduces the raw material, To improve the quality of the vehicle, it is possible not only to increase the sales of the company to develop the company, but also to produce the fastening housing for the frame construction of the excellent quality of the vehicle with the improvement of the productivity and the cost reduction. And can help to produce safe vehicles at low cost. That take advantage of a variety of valuable benefits, including primary industries, as well as being equipped competitiveness in the export market, it can be seen that the bar is very big invention that high expectations.

P1: Double blanking process P2: Double row forming process
P3: Repetitive trimming process P4: Defibrillation process
1: fastening housing 2: forming mold
10: main housing 11: fastening space
20: side housing 21: side fixing piece
22: upper fixing piece 30: rim
40: rib 50: fastening hole
60: original steel plate 61: protruding piece
62: connection 63: separation space
70: lower mold 71: lower fixing block
72: Lower movable block 80: Upper mold
81: upper movable block 82: upper fixed block

Claims

A separating space 63 is formed in the front and rear direction of the central part and is connected to a central part of a plurality of the raw steel plates 60 separated from each other by left and right sides by a connecting piece 62, A plurality of raw steel plates 60 symmetrical with each other are formed integrally by the connecting pieces 62 by forming a single piece of the raw steel plate 60 symmetrically forming the projecting pieces 61 protruding therefrom by a blanking operation in the blanking mold A blanking blanking step P1;
A double row forming process P2 in which the symmetrical raw steel sheet 60 produced by the double row blanking process P1 is placed on the forming die and the main housing 10 and the side housing 20 are simultaneously formed through a molding operation, and;
(P3) for cutting scraps held on both ends of a plurality of coupling housings (1) formed by symmetrically forming the main housing (10) and the side housing (20) through the double row forming process (P2);
A plurality of clamping housings 1 from which the scrap has been removed through the returning trimming process P3 are seated on the lifting mold so that necessary clamping holes 50 are formed at the upper end of the main housing and the connecting pieces 62 formed at the center are simultaneously removed And the advancing cleaning step (P4) are sequentially carried out.

The method of claim 1, further comprising:

Wherein the shape of the separating hole (63) is formed so as to be narrower from a center portion side toward an outer end portion of the separating hole (63).