CN102862033A

CN102862033A - Method for machining bent angle of metal plate

Info

Publication number: CN102862033A
Application number: CN2012103722369A
Authority: CN
Inventors: 唐江涛
Original assignee: YONGKANG WANGLI HARDWARE MANUFACTURING Co Ltd
Current assignee: Zhejiang Guangna Industry & Trade Co ltd
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2013-01-09
Anticipated expiration: 2032-09-28
Also published as: CN102862033B

Abstract

The invention relates to a method for machining a bent angle of a metal plate. The method comprises the following steps of: (1) determining the position of the bent angle of the metal plate according to requirements; (2) perforating a bent slot at a part requiring the bent angle on the metal plate; and (3) bending the metal plate along the bent slot inwards to form the bent angle, wherein in the step (2), the bent slot consists of a V-shaped slot part and welding slots, the V-shaped slot part with a V-shaped cross section is formed on the metal plate, and the welding slot is formed on the two side edges of the V-shaped slot; the two side walls of the V-shaped slot part are in butt-joint to form the bent angle in the step (3); and the two sides of the welding slot are gathered together to surround a welding groove. The bent angle machined by the method has clear bevel and is free from torsion and deformation; and more importantly, when the method disclosed by the invention is applied to a bent angle of a thick metal plate, a welded joint of the bevel of the bent angle is good in effect and high in strength.

Description

A kind of processing method of metallic plate bent angle

Technical field

The present invention relates to the metallic plate manufacture field, be specifically related to a kind of processing method of metallic plate bent angle.

Background technology

When making the safety cabinet cabinet with steel plate in the prior art, normally with mold pressing metallic plate is carried out the punching press bent angle, the shortcoming that the cabinet of making like this exists is that cabinet corner arc radius is excessive, and the bent angle profile is unintelligible, thereby causes the cabinet outward appearance clumsy not attractive in appearance.

Chinese patent literature CN1476944A discloses a kind of processing method of metallic plate bent angle, may further comprise the steps: the knuckle position of determining metallic plate by necessary requirement; Chine place fluting on metallic plate; Metallic plate along the chine bending, is made bent angle.Have the step at the chine place of metallic plate fluting in this processing method, cut part at the metal of knuckle inboard, so that the bent angle section knuckle that machines is clear, distortionless distortion, no color differnece, difference in reflection under the light irradiation, the surface need not be processed again.The prior art has solved directly carries out the bent angle outer surface that punching press bent angle method makes to metallic plate with mold pressing and is the fillet shape, and radius is large, has the diffraction decorative pattern, and the bent angle profile is unintelligible, the problem that outward appearance is undesirable.

But about metallic plate after the chine bending, how the interface of corner connects, do not make any literature record in the prior art, the words that connected mode routinely-welding connects, relevant those skilled in the art generally can expect, when metallic plate carries out fillet welding along the metallic plate longitudinal direction to the corner after the bending of knuckle groove, make the corner form angle welding, if certainly, the field that the metal folding plate is used is not in the very high situation to the requirement of strength at metallic plate knuckle place, adopt this kind method, laborsaving and can meet the demands, if but be applied on the safety cabinet, the intensity of corner does not just satisfy application requirements, stay chance for the thief possibly, the thief can adopt high strength to impact thing to start with from knuckle, break the safety cabinet metallic plate, thereby opening safety cabinet steals successfully, for this situation, relevant technologies personnel can expect " V " shape slot part separately larger, work as like this metallic plate along the bending of bending groove, when dock the two side of described " V " shape slot part, can stay the slit between the two side, welding personnel can put in welding gun in the slit metallic plate corner is welded, and makes the metallic plate corner reach requirement of strength.But ignored a very important technical problem: the slit that stays between the two side is long and narrow tip-angled shape by an end of metallic plate outer wall, like this when the welding slit, welding arc can not arrive angled end, and welding fluid is because the cause of solidifying rapidly can not arrive angled end, angled end can form a cavity like this, and it is well-known, more sharp-pointed local stress concentration phenomenon is more obvious, and the stress concentration phenomenon can cause the strength decreased of corner, the butt welded seam quality also has very bad impact, diminishes weld seam service life.

Summary of the invention

For this reason, technical problem to be solved by this invention is the problem that knuckle place weld seam effect is undesirable, intensity is low that the processing method of metallic plate bent angle in the prior art exists when being applied to thick sheet metal, provide a kind of when being applied to the thick sheet metal bent angle, the processing method of the metallic plate bent angle that knuckle place weld seam is effective, intensity is high.It may further comprise the steps:

1) determines the knuckle position of metallic plate by necessary requirement;

2) need the knuckle place to open the bending groove at metallic plate;

3) with metallic plate along the inside bending in described bending groove place, make bent angle; Step 2) groove of bending described in is by being formed on the described metallic plate, " V " shape slot part that cross section is V-shaped and the welding groove that is formed on described " V " shape groove both side edges form, make the two side docking of described " V " shape slot part through step 3), form bent angle; The both sides of described welding groove are gathered and are surrounded bevel for welding.

The bending groove of opening in metallic plate need knuckle place in this processing method is by being formed on the metallic plate, " V " shape slot part that cross section is V-shaped and the welding groove that is formed on described " V " shape groove both side edges form, with metallic plate along the inside bending in described bending groove place, make the two side docking of described " V " shape slot part form bent angle, the both sides of welding groove are gathered and are surrounded bevel for welding, like this, not only so that the bent angle section knuckle that machines is clear, distortionless distortion, and form the bevel for welding can be used for the welding of knuckle place in the folding corner, guaranteed the intensity at knuckle place after the metallic plate bending.

In the present invention, the plate thickness at the most advanced and sophisticated place of " V " shape slot part is between the 1.5-2.0mm, so that this invention can not produce slight crack when being applied to the safety cabinet cabinet, can guarantee that the corner knuckle is clear simultaneously.

In the present invention, described bevel for welding cross section is " U " shape, be conducive to welding personnel and welding gun put in bevel for welding the knuckle place is welded, and the space of staying for welding arc is suitable, is conducive to good weld seam effect.

In the present invention, described bevel for welding cross section is " V " shape, operating personnel need upper surface place, knuckle place to open first large " V " shape groove at metallic plate, then can finish out bending groove, handling ease as long as form one at large " V " shape groove lateral margin both sides cut-out metal than the larger welding groove of " V " shape channel opening.

Description of drawings

For content of the present invention is more likely to be clearly understood, the below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein

Fig. 1, Fig. 2 are prior art metallic plate method of processing corners schematic diagrames;

Fig. 3, Fig. 4 are the schematic diagrames of embodiments of the invention one;

Fig. 5, Fig. 6 are the schematic diagrames of embodiments of the invention two.

The specific embodiment

Embodiment 1

As shown in Figure 3, Figure 4, the processing method of a kind of metallic plate bent angle of the present embodiment may further comprise the steps: the knuckle position of 1) determining metallic plate by necessary requirement; 2) need the knuckle place to open the bending groove at metallic plate; 3) with metallic plate along the inside bending in described bending groove place, make bent angle; Step 2) groove of bending described in is by being formed on the described metallic plate, " V " shape slot part that cross section is V-shaped and the welding groove that is formed on described " V " shape groove both side edges form, make the two side docking of described " V " shape slot part through step 3), form bent angle; The both sides of described welding groove are gathered and are surrounded cross section and be the bevel for welding of " U " shape.In the present embodiment, described bevel for welding cross section is " U " shape, because " U " shape groove is to be shaped on the basis of " V " shape groove, so " U " shape aperture efficiency is larger, the bevel for welding bottom is not sharp-pointed yet, being conducive to like this welding personnel puts in bevel for welding with welding gun the knuckle place is welded, the bottom that welding arc can arrive " U " shape groove becomes one itself and weld seam the mother metal melting of " U " shape groove bottom, can guarantee to weld the weld seam effect that the intensity of rear metallic plate corner is become reconciled.

Embodiment 2

Such as Fig. 5, shown in Figure 6, the processing method of a kind of metallic plate bent angle of the present embodiment may further comprise the steps: the knuckle position of 1) determining metallic plate by necessary requirement; 2) need the knuckle place to open the bending groove at metallic plate; 3) with metallic plate along the inside bending in described bending groove place, make bent angle; Step 2) groove of bending described in is by being formed on the described metallic plate, " V " shape slot part that cross section is V-shaped and the welding groove that is formed on described " V " shape groove both side edges form, make the two side docking of described " V " shape slot part through step 3), form bent angle; The both sides of described welding groove are gathered and are surrounded cross section and be the bevel for welding of " V " shape.In the present embodiment, described bevel for welding cross section is " V " shape, operating personnel need upper surface place, knuckle place to open first large " V " shape groove at metallic plate, then can finish out bending groove, handling ease as long as form one at large " V " shape groove lateral margin both sides cut-out metal than the larger welding groove of " V " shape channel opening.

Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.

Claims

1. the processing method of a metallic plate bent angle may further comprise the steps:

1) determines the knuckle position of metallic plate by necessary requirement;

2) need the knuckle place to open the bending groove at metallic plate;

3) with metallic plate along the inside bending in described bending groove place, make bent angle;

It is characterized in that:

Step 2) groove of bending described in is by being formed on the described metallic plate, " V " shape slot part that cross section is V-shaped and the welding groove that is formed on described " V " shape groove both side edges form, make the two side docking of described " V " shape slot part through step 3), form bent angle; The both sides of described welding groove are gathered and are surrounded bevel for welding.

2. the processing method of a kind of metallic plate bent angle according to claim 1 is characterized in that: the angle of described " V " shape groove is 90-1 20 degree.

3. the processing method of a kind of metallic plate bent angle according to claim 1 is characterized in that: described bevel for welding cross section is " U " shape.

4. the processing method of a kind of metallic plate bent angle according to claim 1 is characterized in that: described bevel for welding cross section is " V " shape.

5. the processing method of each described a kind of metallic plate bent angle according to claim 1-3 is characterized in that: the cross section of described bending groove is along the Central Symmetry of described " V " shape slot part.

6. the processing method of described a kind of metallic plate bent angle according to claim 1-3 is characterized in that: the plate thickness at the place, tip of described " V " shape slot part is 1.5-2.0mm.