CN202725836U

CN202725836U - Stamping die for blind holes on steel plate surface

Info

Publication number: CN202725836U
Application number: CN 201220449307
Authority: CN
Inventors: 王力
Original assignee: CHENGDU ZHONGHONG RAIL TRANSIT ENVIRONMENTAL PROTECTION INDUSTRY Co Ltd
Current assignee: CHENGDU ZHONGHONG RAIL TRANSIT ENVIRONMENTAL PROTECTION INDUSTRY Co Ltd
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2013-02-13
Anticipated expiration: 2022-09-05

Abstract

The utility model discloses a stamping die for blind holes on a steel plate surface. The die comprises a convex die arranged on a punch of a punching machine and a concave die arranged on a base of the punching machine, a through hole is arranged at the center of the concave die, the cylinder diameter of the concave die is smaller than the diameter of the central hole of the concave die, and a punching surface of the convex die punch is in an arc shape. According to the die, the freedom degree of direct contact of a lower stop point of the convex die with a lower molding position of a blind hole of the concave die is released, stretching molding of the steel plate surface is achieved through materials during an elastic range, the abrasion of the die is reduced, work hardening is achieved simultaneously, mechanical properties of a product are improved, rigid contact of the convex die with the concave die is avoided, damage to a stamping device is avoided, possibility and reliability for rigid stamping production are achieved, and the service life of the die is prolonged. Arc pit type blind holes processed by the concave die after improvement are more accurate in molding, smaller in deformation and lower in processing cost.

Description

The diel of a kind of surface of steel plate blind hole

Technical field

The utility model belongs to the metal material processing technical field, especially belongs to metal material calendering processing technique field, particularly a kind of surface of steel plate blind hole diel.

Background technology

Blind hole is to connect top layer and internal layer and the pit that do not run through, such as the close blind hole surface of golf, and when it can reduce the golf high-speed motion, the little whirlpool resistance of surperficial air, simultaneously, arc pit type blind hole also has very important effect to the conduction of sound wave.

At present, the surface of thin steel sheet processing blind hole relies on hydraulic press compressing, the sheet metal that normally is placed on the die by the punch impact that is installed on the punch press head forms, the die center is the pit by blind hole requirement design, when punch impacts steel plate and the direct contact impact in die pit bottom surface, therefore when surface of thin steel sheet is processed close blind hole, high to the Geometrical Tolerance Principle precision of punch and die, otherwise accumulated error can cause the tensile stress of the close blind hole of surface of thin steel sheet inconsistent.If use the crank connecting link punch press, owing to do not have the release oil return system of hydraulic mechanism at stroke down to point, can cause the equipment joint to have the situation of stretching, the result is not damage equipment, exactly mould is pounded to press and smashes, if use the numerical control machining center mfg. moulding die, when punch press is installed, the general alignment precision of punch and die be difficult to guarantee, and adjustment, check time are long, directly cause the up-to-standard rate of punch forming sheet metal blind hole product excessively low.

Summary of the invention

The utility model discloses the diel of a kind of surface of steel plate blind hole according to the deficiencies in the prior art, and problem to be solved in the utility model is: a kind of blind hole processing mold is provided.Few, the Mould Machining of the confined condition of the utility model mould, easy for installation, long service life.

The utility model is achieved through the following technical solutions:

The diel of surface of steel plate blind hole comprises the punch that is installed on the punch press drift and the die that is installed on the punch press pedestal, and it is characterized in that: described die center is through hole.

Described punch body diameter is less than the diameter of die centre bore.

Further described punch body diameter equals the steel plate thickness that the blind hole internal diameter deducts twice.

Described punch impact head impact surface is arc.

The utility model changes the pit on the common blind hole diel die into perforation, and punch is adjusted its punching press lower dead center when punching press, and the hole depth that reaches blind hole by punch punching press to lower dead center can form blind hole; Require the body diameter of the diameter of centre bore of design die and punch coaxial according to blind hole; The arc of punch shock surface is self-assembling formation arc pit type blind hole when stamping steel plate; Distortion and the calendering of steel plate when the punch body diameter adds that the steel plate thickness of twice is identical and is conducive to stamping steel plate less than the blind hole internal diameter of the diameter of die centre bore, particularly punching out and punch body diameter.

It is a kind of in diel during in the continuous punching out blind hole of surface of steel plate on the crank connecting link multiple-die press that the utility model provides, contact with the die rigidity in stamping forming lower dead center for fear of punch, cause pressing equipment or mould to damage, the moulding of surface of steel plate blind hole relies on the momentum that the crank connecting link punch press drives punch, die is open bore, only limit the profile of blind hole, without the compacted under position, do not limit blind hole the degree of depth, rely on the position of punch lower dead center to realize, discharge the free degree that punch lower dead center and the blind hole compacted under position of die directly contact.

Owing to discharged the free degree that punch lower dead center and the blind hole compacted under position of die directly contact, make surface of steel plate lean on material in elastic range in-draw moulding, the wearing and tearing of mould have been reduced, realize simultaneously work hardening, improved the mechanical performance of product, avoid the rigidity of punch and die to contact, avoided damaging pressing equipment, realized rigid stamp manufacturing feasibility and reliability, prolonged again the mold use life-span; It is more accurate that the arc pit type blind hole of the die processing after the utility model improves is shaped, and is out of shape littlely, and processing cost is lower.

Description of drawings

Fig. 1 is the utility model punching die structure schematic cross-section;

Fig. 2 is the utility model die surface structure schematic diagram;

Fig. 3 is the utility model die cross-sectional structure schematic diagram;

Fig. 4 be the utility model processing blind hole steel plate floor map arranged;

Fig. 5 be the utility model processing blind hole steel plate schematic cross-section arranged.

Among the figure, the 1st, the drift of punch press, the 2nd, punch, 2a are the punch shock surfaces, the 3rd, steel plate, the 4th, die, 4a are inclined plane rings, the 5th, blind hole, the 6th, die centre bore, H are bridges.

The specific embodiment

Below by embodiment the utility model is conducted further description; present embodiment only is used for the utility model is further detailed; but can not be interpreted as the restriction to the utility model protection domain, those skilled in the art can make the scope that some nonessential improvement and adjustment belong to the utility model protection according to above-mentioned content of the present utility model.

In conjunction with Fig. 1 to Fig. 4.

As shown in the figure, the diel of surface of steel plate blind hole comprises the punch 2 that is installed on the punch press drift and the die 4 that is installed on the punch press pedestal, and die 4 centers are through holes 6.Punch 2 body diameters are less than die centre bore 6 diameters.Described punch 2 body diameters equal steel plate 3 thickness that blind hole 5 internal diameters deduct twice.Punch 2 impact head impact surface 2a is arc.

In conjunction with Fig. 1, Fig. 2 and Fig. 3, Fig. 1 are the utility model punching die structure schematic cross-sections, and Fig. 2 is the utility model die surface structure schematic diagram, and Fig. 3 is the utility model die cross-sectional structure schematic diagram.The utility model changes the pit on the blind hole 5 diel dies 4 into through hole 6, and punch 2 is adjusted its punching press lower dead center easily when punching press, form blind hole 5 by punch 2 punching presses to lower dead center; Require diameter and the body diameter of punch 2 and the radian of shock surface 2a arc of the centre bore 6 of design die 4 according to blind hole 5; The arc of punch 2 shock surface 2a is self-assembling formation arc pit type blind hole 5 when stamping steel plate; Distortion and the calendering of steel plate when punch 2 body diameters are conducive to stamping steel plate less than the diameter of die centre bore 6, the best are that punch 2 body diameters are with processing steel plate 3 thickness twices and identical with the diameter of die centre bore 6.

Fig. 4 and Fig. 5 are plane and the schematic cross-sections of the steel plate 3 that arc pit type blind hole 5 is arranged of machine-shaping, in fact the punch 2 of group coupling and die 4 are realized that a plurality of blind holes 5 process simultaneously adding can arrange at pressing equipment man-hour.

Claims

1. surface of steel plate blind hole diel comprises the punch (2) that is installed on the punch press drift and is installed in die (4) on the punch press pedestal that it is characterized in that: described die (4) center is through hole (6).

2. surface of steel plate blind hole according to claim 1 diel is characterized in that: described punch (2) body diameter is less than die (4) centre bore (6) diameter.

3. surface of steel plate blind hole according to claim 2 diel is characterized in that: described punch (2) body diameter equals steel plate (3) thickness that blind hole (5) internal diameter deducts twice.

4. it is characterized in that according to claim 1 and 2 or 3 described surface of steel plate blind hole diels: described punch (2) impact head impact surface (2a) is arc.