KR101643704B1 - Automotive and Fixing Lashing Hook or toeing hook method - Google Patents

Automotive and Fixing Lashing Hook or toeing hook method Download PDF

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Publication number
KR101643704B1
KR101643704B1 KR1020150158524A KR20150158524A KR101643704B1 KR 101643704 B1 KR101643704 B1 KR 101643704B1 KR 1020150158524 A KR1020150158524 A KR 1020150158524A KR 20150158524 A KR20150158524 A KR 20150158524A KR 101643704 B1 KR101643704 B1 KR 101643704B1
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South Korea
Prior art keywords
ring
welding
shaped hook
hook portion
supporting
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KR1020150158524A
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Korean (ko)
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성유경
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주식회사 투엠모터스
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/01—Traction couplings or hitches characterised by their type
    • B60D1/04—Hook or hook-and-hasp couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Wire Processing (AREA)

Abstract

The present invention can manufacture a lacquing hook or a toe hook for an automobile which is installed for the purpose of towing, etc., more easily, conveniently and inexpensively, and at the same time, it can be provided with sufficient strength and performance as required, And to a new manufacturing method which can contribute greatly to the securing.
That is, when the ring-shaped hook portion 10 is manufactured by bending while using the round bar of the metal material, the both ends of the ring-shaped hook portion 10 can be simply prepared in an incomplete state, When the ring-shaped hook portion 10 and the supporting crest portion 20 are joined by welding, the ring-shaped hook portion 10 and the supporting crest portion 20 are engaged with each other, Since the welding is performed at the same time, the efficiency of reducing the process and cost as well as the efficiency of increasing and decreasing the coupling force and strength between the ring-shaped hook portion 10 and the supporting crest portion 20 can be greatly enhanced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a lashing hook or a toing hook for an automotive high-

The present invention can manufacture a lacquer hook or a toe lacquer for an automobile which is installed for the purpose of traction, etc., easily, conveniently, and inexpensively, and at the same time, it can be provided with sufficient strength and performance as required, And to a new manufacturing method which can contribute greatly to quality improvement.

Lashing hooks or toeing hooks for automobile hammers are generally formed by hooks made of rings or rings so as to be able to hold or tow an automobile by using ropes or wires in various situations, It is general that a threaded portion is formed so as to be fixed to a vehicle frame by welding or screwed to a nut fixed to the frame.

In many cases, a ring type in which one side portion of a hook portion to which a rope is tied is opened, but in recent years, a "◎" type which is a round ring type with no opening portion is mainly used.

Conventional methods for manufacturing lashing hooks and toe hooks for automobile hulls include cold forging or heat treatment,

Hot forging is performed by applying heat at a high temperature to form an upper ring-shaped hook portion and a lower supporting bag portion integrally, and then forming a threaded portion at a lower portion through separate post-

In the process of heating the steel at a high temperature and causing deformation by pressing under the condition of a mold, there is an advantage that a complicated shape part can be formed quickly, but the defect such as decarburization, surface defect, In addition to poor working environment, expensive forging and weight forging press equipment and mold making are essential, and material loss is very large, 20 ~ 30% extra material is needed more than actual necessary material in order to fill the flesh,

A considerable amount of energy and cost is required to heat a metal material at a high temperature, and a transportation operation is also high temperature. Therefore, a large amount of equipment is required to prevent the occurrence of scuff marks, and a projection area due to FLASH generation is large, , There is a problem that COST has a considerable share in that the mold processing cost is increased because a work process such as UPSET, KNECKING, GREEN TREE, HORTA TREE, STITLE TAPE,

As a method for avoiding this, there is used a weld-joint-type manufacturing method in which the upper ring-shaped hook portion and the lower supporting bag portion are separately prepared and then contacted by welding,

According to the related art method, a complete ring shape ("") is formed from the step of preparing the ring-shaped hook portion, and then the welding process is performed by joining the lower support piece portion by welding, Since the welding is simply performed only on the outer periphery where the supporting bag portions meet,

In particular, when the ring-shaped hook portion, which is made in a fully formed shape, is welded to the lower supporting trunk portion, it is extremely weak in terms of fusion bonding and welding strength and strength, It is difficult to expect a high level of bonding force, bearing strength, strength and safety required for lashing hooks and toeing hooks, which has been pointed out as the greatest problem of this method.

That is, a lashing hook and a toeing hook for an automobile may cause the vehicle of the weight chain to be pulled with the help of another vehicle, or may pull or structure another vehicle, as described above, Therefore, when the strength between the ring-shaped hook portion and the supporting bag portion is weak, the vehicle and the driver can be directly connected with a serious safety problem.

However, if unnecessarily large amounts of processes and costs are put into production at an expensive price, a new alternative is required because the cost of purchasing automobile parts raises dissatisfaction with consumers and lowers price competitiveness.

Utility model disclosure 20-1997-0016646 (laxing hook installation structure of automobile) Utility Model Release 1998-041838 (Detachable Car Towing Hook) Patent Disclosure 10-2006-0056052 (Car & Trucking)

Therefore, the present invention can rapidly produce a large quantity of products by a simple and automated continuous process, but also a considerable strength and supporting force required are backed up, and in particular, the manufacturing cost is very low, Shaped hook portion and the supporting hook portion are welded together, it is possible to naturally connect the ring-shaped hook portion and the supporting hook portion, The present invention provides a method of manufacturing a lashing hook or a toe hook for a new automobile hanger which can further enhance the bonding force by welding and fusing.

In order to accomplish the above object, the present invention is characterized in that a ring-shaped hook portion 10 is formed on an upper portion thereof, a supporting crest portion 20 having a predetermined thickness is formed below the ring-shaped hook portion 10, In manufacturing a lacing hook (A) for an ordinary automobile hanger having a male threaded portion (21) formed on the lower side of the ring portion (20), the ring-shaped hook portion (10) When the ring-like hook portion 10 is welded to the supporting bar portion 20 while preparing the entirety of the ring-shaped hook portion 10 uniformly and inexpensively, And the welding work for joining the support crests 20 together is performed at the same time, thereby contributing to a considerable process and cost reduction efficiency as well as an improvement in strength and bonding force.

In the method of manufacturing a lashing hook or a toe ing hook for automobile hull as described above, when the ring-shaped hook portion is manufactured by bending using the round bar of the metal material, the both ends of the lashing hook or the toe hook are simply prepared in an unfinished state, In addition, when the ring-type hook portion and the support-type bag-to-support portion are welded together, the portion including the ring-type hook portion and the circumferential portion between the support type bag portions is welded together. And cost efficiency, as well as the efficiency of increasing and decreasing the coupling force and strength between the ring-shaped hook portion and the supporting bag portion, which leads to improvement in the performance and quality of the lash hook or the toe hook.

Fig. 1 is an exemplary view of a ring-shaped hook portion preparing step proposed in the present invention
FIG. 2 is a view showing an example of the step of preparing the support bag portion shown in the present invention
FIG. 3 is an exemplary view showing the welding step preparation state shown in the present invention
FIG. 4 is a view showing an example in which the welding step shown in the present invention is performed.
FIG. 5 is a view showing a product of a lassing hook or a toe hook which has been completed through the heat treatment and rolling steps after the welding step shown in the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of manufacturing a lashing hook or a toe hook for an automotive high floor according to the present invention will be described in more detail with reference to the accompanying drawings.

That is, the present invention is a step (ring-shaped hook portion preparation step) of preparing a ring-shaped hook portion 10 that is formed into a ring shape ("?") Using a round bar and an R bending machine; Preparing a supporting sack portion 20 using a round bar and adding a cutting process or the like as needed; (Step for Preparing Supporting Sack Portion) The steps of preparing the respective ring-like hooking portions 10 and the supporting sacking portions 20 corresponding to each other and then joining them securely by welding; (A step of welding between the ring-shaped hook portion and the supporting bag portion) forming a screw portion 21 on the lower side of the supporting bag portion 20 (a step of forming a screw); A method of manufacturing a lassing hook or a toying hook (A) for a conventional automotive high rigid body,

In the step of preparing the ring-shaped hook portion, both sides of the round bar material are subjected to R bending with a circular shape ("") by bending the round bar material with a curvature and an arc, on. Preparing an unfinished whole state such that the valley portion 11 and the auxiliary fused portion 12 due to the face are allocated together; (A ring-shaped hook portion preparation step having a valley portion and an auxiliary fused portion)

The trough portion 11 and the auxiliary fused portion 12 of the ring-shaped hook portion 10 are welded to the upper end of the supporting crest portion 20 in the welding step between the ring- (T-1) around the outer periphery at a point where the ring-shaped hook portion (10) and the supporting crest portion (20) meet with each other, and the ring-shaped hook portion (T-2), which is performed on the trough portion 11 and the auxiliary welding portion 12, which are allocated to the tread portion 11 and the auxiliary welding portion 12, in a single process; (Welding step).

After the welding step is completed, it can be finished through a post-process such as a heat treatment step, a rolling step, an electrodeposition coating step, etc. Hereinafter, each step will be described in detail.

≪ Ring-shaped hook portion preparation step >

In the step of preparing the ring-shaped hook portion, a circular rod having a metal material and circular is cut to a desired length,

Rounding or chamfering is performed on both ends of a round bar material for manufacturing a cut hook having a predetermined length by a processing machine such as a grinder,

When the machining is completed, the mold is bent into a ring shape ("") by curving the mold using an R bender,

At this time, not at the portions where the both ends meet with each other as shown in the drawing, but the raised portions 11 and the fissure gap 12 can be provided between the fingers by maintaining a constant gap.

When the R-bending is performed in the state where the valley 11 and the wing gap 12 are formed, in order to complete the ring shape (""), the portion where the end of the ring- Since the preparation and manufacture of the ring-shaped hook portion 10 are completed by a single step of the R-bending without the need to join the ring-shaped hook portion 10, the ring-shaped hook portion 10 can greatly contribute to the process and cost saving effect.

When the R-bending process for the ring-shaped hook portion 10 is finished, a correcting operation for correcting and adjusting the twist or deviation of curvature and warping can be additionally performed.

≪ Preparation step of supporting bag part >

In the step of preparing the supporting sack portion, a round bar or a large round bar having a diameter that fits the diameter of the supporting sack portion 20 is cut into a round bar material for the sack portion,

It is also possible to process the outer diameter to the number of stamens by using the cutting and to process the outer diameter of the outer diameter when such a projection is required,

When machining of the outer diameter is completed, a rounding or chamfering is performed using a machining machine such as a grinder at both ends of the introduction.

<Welding Step>

The welding process is for firmly joining and joining the ring-shaped hook portion 10 and the supporting crests 20,

The contact portion of the ring-shaped hook portion 10 having the trough 11 or the minute clearance 12 formed at the center of the upper end portion of the supporting trunk portion 20 by a separate jig device is positioned Then,

(T-1) performed around the outer periphery at a point where the ring-shaped hook portion (10) and the supporting crest portion (20) meet with each other by welding using a welding machine,

The trough-to-crevice gap welding (T-2) to be performed on the valley portion 11 and the auxiliary welding portion 12 assigned to the ring-like hook portion 20 is performed simultaneously in one step.

If the outer circumferential weld (T-1) and the trough-weld weld (T-2) are performed simultaneously and continuously,

The primary fusion and bonding are performed around the outer periphery of the point where the ring-shaped hook portion 10 and the supporting crest portion 20 meet,

The secondary joint is also applied to the valley portion 11 and the auxiliary fused portion 12 assigned to the ring-shaped hook portion 20,

 It is possible to not only fill and bind the valley 11 of the ring-shaped hook portion 10 and the wing gap 12 but also to increase the bonding strength and the strength of the ring-like hook portion 10, It plays a more decisive role in reinforcement.

As the welding method, it is possible to perform arc welding, argon welding, oxygen welding, etc.,

Figure 112015110123367-pat00001
Wow
Figure 112015110123367-pat00002
When the mixed gas is used as the protective gas
Figure 112015110123367-pat00003
Welding is easier and quicker to increase productivity, but also provides excellent bonding strength and clean appearance, which is advantageous for improving the quality and merchantability of products.

In other words,

Figure 112015110123367-pat00004
Wow
Figure 112015110123367-pat00005
When the mixed gas is used as the protective gas
Figure 112015110123367-pat00006
Welding uses a steel wire wire containing a sufficient deoxidizing agent
Figure 112015110123367-pat00007
The arc atmosphere is intentionally oxidized so that the welded steel becomes porous and the oxygen content is increased as well as the oxidation reaction of the molten steel is vigorously caused by the additive oxygen so that the appearance of the bead is considerably smoother The temperature and the penetration of the molten pool are increased, the inclusion of the inclusions is improved by the promotion of the inclusion agglomeration, the pool of the welded steel is clean, and the ductility and the impact value are improved remarkably.

like this

Figure 112015110123367-pat00008
When the ring-shaped hook portion 10 and the support crest portion 20 are welded together by welding, the ring-shaped hook portion 10 and the supporting crest portion 20 are tightly joined to each other around the periphery of the ring- At the same time, the fusion of the valley 11 of the ring-shaped hook portion 10 and the flare gap 12 can be performed by a single continuous welding process,

In the process from the ring-shaped hook material preparing step to the welding step of joining the ring-shaped hook portion and the supporting bag portion, the ring-shaped hook portion and the support It is very effective to further increase the strength and strength of joints by welding.

<Heat treatment step>

The heat treatment step is a step selectively performed when it is necessary to increase the strength and toughness of the finished product to a more robust material,

Various methods such as quenching, quenching, tempering, normalizing, annealing and annealing, which are widely used in the industrial field, can be suitably attempted.

<Step of rolling>

The rolling process is a process for forming a threaded portion for screwing in a fixing nut fixed to an automobile frame at a lower portion of the ring-shaped hook portion 10 and the supporting crest portion 20, As a process, various types of feeders that are widely used in industry can be used.

<Electrodeposition coating step>

The electrodeposition process is a process of heat treatment in the state of being bonded by welding and forming a film on the surface of the finished material before the rolling process (formation of the thread) to prevent corrosion and improve the texture of the appearance.

When a coating material is used as an electrode on the same principle as electroplating and a coating material container is set as a positive electrode or a separate positive plate is placed in a coating container and a water-soluble paint is put in the coating material container to flow a DC current, Is attracted to the surface of the substrate by an electric force to deposit and form a coating film.

A: lacing hook or toe hook for high ten 10:
11: valley 12: auxiliary fused portion
20: supporting bag portion 21: threaded portion
T-1: Welding around the circumference T-2:

Claims (5)

A ring-shaped hook portion preparing step of preparing a ring-shaped hook portion 10 which is formed into a ring shape ("?") Using a round bar and an R bender; A step of preparing a support bag portion 20 for preparing a support bag portion 20 using a round bar and preparing a cut ring portion in which the prepared ring type hook portion 10 and the support bag portion 20 are made to correspond to each other, A step of welding between the hook portion and the supporting bag portion; A screw forming step for forming a screw portion (21) on the lower side of the supporting sack portion (20); A method of manufacturing a lassing hook or a toying hook (A) for a conventional automotive high rigid body,

In the ring-shaped hook portion preparation step, both sides of the round bar material are subjected to R bending with a ring shape ("?") After both ends are flattened. (A ring-shaped hook portion preparation step having a valley portion and an auxiliary fused portion) in which the valley portion 11 and the auxiliary fused portion 12 are uniformly assigned to each other;

The trough portion 11 and the auxiliary fused portion 12 of the ring-shaped hook portion 10 are welded to the upper end of the supporting crest portion 20 in the welding step between the ring- After welding,
At this time, the outer circumferential welding (T-1) around the outer periphery at the point where the ring-shaped hook portion (10) and the supporting crest portion (20)
(T-2) to be performed on the valley portion 11 and the auxiliary welding portion 12 assigned to the ring-shaped hook portion 10 in one step (welding step)
As a welding method in the welding step,
Figure 112016066532407-pat00009
Wow
Figure 112016066532407-pat00010
When the mixed gas is used as the protective gas
Figure 112016066532407-pat00011
Using welding;
Between the welding step and the rolling step,
Figure 112016066532407-pat00012
An additional metal heat treatment process that increases the strength and toughness of the welded material and changes it to a more robust material;
After the rolling step, an electrodeposition coating step may be further performed to form a coating film for surface protection and corrosion prevention;
Wherein the both ends of the round bar material used for manufacturing the supporting bar portion are subjected to the face milling process in the step of preparing the supporting bar stock portion. delete delete delete delete
KR1020150158524A 2015-11-12 2015-11-12 Automotive and Fixing Lashing Hook or toeing hook method KR101643704B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220060579A (en) 2020-11-04 2022-05-12 동연스틸주식회사 System for manufacturing towing nut

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH069758U (en) * 1992-07-20 1994-02-08 株式会社ヨロズ Link member
KR970016646A (en) 1995-09-21 1997-04-28 구자홍 Large Diameter Zoom Lens
KR19980041838A (en) 1996-11-29 1998-08-17 후지야마겐지 Bonding device
KR20060056052A (en) 2004-11-19 2006-05-24 현대자동차주식회사 Toeing hook
CN201721272U (en) * 2010-05-25 2011-01-26 浙江吉利汽车研究院有限公司 Automobile towing hook
JP2015085329A (en) * 2013-10-28 2015-05-07 大橋鉄工株式会社 Manufacturing method of traction hook

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH069758U (en) * 1992-07-20 1994-02-08 株式会社ヨロズ Link member
KR970016646A (en) 1995-09-21 1997-04-28 구자홍 Large Diameter Zoom Lens
KR19980041838A (en) 1996-11-29 1998-08-17 후지야마겐지 Bonding device
KR20060056052A (en) 2004-11-19 2006-05-24 현대자동차주식회사 Toeing hook
CN201721272U (en) * 2010-05-25 2011-01-26 浙江吉利汽车研究院有限公司 Automobile towing hook
JP2015085329A (en) * 2013-10-28 2015-05-07 大橋鉄工株式会社 Manufacturing method of traction hook

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220060579A (en) 2020-11-04 2022-05-12 동연스틸주식회사 System for manufacturing towing nut

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