CN215144358U

CN215144358U - Forging die structure of monaural hinge forging

Info

Publication number: CN215144358U
Application number: CN202120917851.8U
Authority: CN
Inventors: 孟昭昕
Original assignee: Jiangsu Longsheng Drilling Machinery Manufacturing Co ltd
Current assignee: Jiangsu Longsheng Drilling Machinery Manufacturing Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-14
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a forging mould structure of monaural hinge forging, including last mould, well mould and lower mould, go up mould, well mould and lower mould and connect gradually from top to bottom, the lower extreme of going up the mould mills has first tang, two recesses have been seted up to the lower terminal surface of well mould, be equipped with the second screw that runs through from top to bottom in the well mould, the up end of lower mould mills and has the second tang, the edge of second tang is equipped with two and recess matched with boss, be equipped with two and second screw matched with third screw on the second tang. The utility model has the advantages that: the split die structure is adopted, so that the difficulties of high die processing difficulty, long preparation period and high equipment requirement are avoided, the die processing period is ensured, and the die processing cost is reduced; the easily damaged L part on the die is replaced in time, so that the quality of the forged piece product is ensured; the mould with the easily damaged L part is made alone, and is small, and it is convenient to change, avoids whole of mould to scrap, saves the mould cost.

Description

Forging die structure of monaural hinge forging

Technical Field

The utility model relates to a monaural hinge forging mould machine tooling technical field specifically is a forging mould structure of monaural hinge forging.

Background

The single-lug hinge is a key part for large and medium-sized equipment hoisting operation in the engineering machinery industry, so the performance requirement on the single-lug hinge is strict, the single-lug hinge must be a forged product, and any forging defect is not allowed to occur. When the forging die is manufactured according to a normal forging die, the depth of a cavity of the forging die exceeds the processing depth of processing equipment, a lengthened cutter needs to be customized, the processing time of the die is prolonged, and the processing cost of the die is increased. And the forging die bears severe friction and cold-hot alternating stress change in the production process from the transition part of the round cavity to the square flat cavity, so that abrasion deformation is easily generated, and the quality of the ear hinge forging piece is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a forging mould structure of monaural hinge forging to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a forging mould structure of single ear hinge forging, includes mould, well mould and lower mould, go up mould, well mould and lower mould and connect gradually from top to bottom, the lower extreme of going up the mould mills has first tang, two recesses have been seted up to the lower terminal surface of well mould, be equipped with the second screw that runs through from top to bottom in the well mould, the up end of lower mould mills and has the second tang, the edge of second tang is equipped with two and recess matched with boss, be equipped with two and second screw matched with third screw on the second tang.

Further preferably, the first spigot is a cylindrical notch which is in clearance fit with the outer diameter of the middle die.

Preferably, an L-shaped part matched with the single-lug hinge is arranged in a middle die cavity of the middle die.

Preferably, the second screw holes are countersunk screw holes, and a central connecting line of the two second screw holes is perpendicularly intersected with a central connecting line of the two grooves.

Further preferably, the second spigot is a cylindrical notch which is in clearance fit with the outer diameter of the middle die.

Preferably, the upper die, the middle die and the lower die are all manufactured by adopting an upsetting-drawing process, and the upper die, the middle die and the lower die are all made of 5 CrNiMo.

Preferably, the upper end surface of the upper die is provided with two first screw holes, and the two first screw holes are symmetrically arranged on the upper end surface of the upper die.

Further preferably, the upper die cavity of the upper die is provided with a conical chamfer, and the second spigot is provided with a conical chamfer.

Has the advantages that: the forging die structure of the single-lug hinge forging piece adopts a split die structure, avoids the difficulties of large die processing difficulty, long preparation period and high equipment requirement, ensures the die processing period and reduces the die processing cost; the easily damaged L part on the die is replaced in time, so that the quality of the forged piece product is ensured; the mould with the easily damaged L part is made alone, and is small, and it is convenient to change, avoids whole of mould to scrap, saves the mould cost.

Drawings

Fig. 1 is an exploded schematic view of a forging die structure of a single-lug hinge forging piece disclosed in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of a forging die structure of a single-lug hinge forging piece disclosed in an embodiment of the present invention;

fig. 3 is another schematic cross-sectional structure diagram of the forging die structure of the single-lug hinge forging piece disclosed in the embodiment of the present invention;

fig. 4 is a front view structure diagram of the forging die structure of the single-lug hinge forging disclosed in the embodiment of the present invention.

Reference numerals: 1-upper die, 11-upper die cavity, 12-first screw hole, 13-first spigot, 2-middle die, 21-middle die cavity, 22-second screw hole, 23-groove, 24-L part, 3-lower die, 31-lower die cavity, 32-second spigot, 33-boss, 34-third screw hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, a forging die structure of single-lug hinge forging piece, includes last mould 1, well mould 2 and lower mould 3, it connects gradually from top to bottom to go up mould 1, well mould 2 and lower mould 3, the lower extreme of going up mould 1 mills first tang 13, two recesses 23 have been seted up to the lower terminal surface of well mould 2, be equipped with two second screw holes 22 that run through from top to bottom on the well mould 2, the up end of lower mould 3 mills second tang 32, the edge of second tang 32 is equipped with two and recess 23 matched with boss 33, be equipped with two and second screw hole 22 matched with third screw 34 on the second tang 32.

In this application, this forging die structure adopts split die structural design, go up mould 1 and lower mould 3 and well mould 2 and all adopt clearance fit, the equipment is simple, easy. The upper die 1 is of a revolving body structure and can be machined and molded on a lathe, the middle die 2 and the lower die 3 are completed on machining center equipment, the depths of the middle die cavity 21 of the middle die 2 and the lower die cavity 31 of the lower die 3 are respectively 70mm and 140mm, the machining depths are within the capacity range of the machining center equipment, the die is easy to machine, the equipment requirement is low, the short machining period of the forging die is guaranteed, and the machining cost of the die is reduced. Meanwhile, aiming at the problems of abrasion of the L part on the forging die of the single-lug hinge forging piece and low service life, the structure with the L part 24 is made into an independent middle die 2, the size is small, the structure can be replaced in time in the production process, the quality of the single-lug hinge forging piece is guaranteed, the integral scrapping of the die is avoided, and the die cost is saved.

In the application, the upper die 1 and the lower die 3 are designed to be frustum structures, the middle die 2 is designed to be a cylindrical structure, the diameter of the upper end face of the upper die 1 is 401mm, the diameter of the lower end face is 407mm, and the height is 165 mm; the diameter of the middle die 2 is 300mm, and the height of the middle die is 70 mm; the diameter of the upper end face of the lower die 3 is 408mm, the diameter of the lower end face of the lower die is 417mm, and the height of the lower end face of the lower die is 233 mm. Recess 23 and boss 33 all adopt fillet rectangle structural design, realize well mould 2 and lower mould 3's accurate location through two recesses 23 and boss 33, guarantee that the die cavity of this forging die structure is unanimous.

Preferably, the first seam allowance 13 is a cylindrical notch which is in clearance fit with the outer diameter of the middle die 2, so as to ensure that the cavities of the forging die structure are consistent after the upper die 1 and the middle die 2 are combined.

Preferably, an L-shaped portion 24 matched with the single-lug hinge is arranged in the middle die cavity 21 of the middle die 2. In this application, L position 24 bears violent friction and cold and hot alternating stress change in monaural hinge forging production and processing process, produces wearing and tearing deformation easily, sets up it on well mould 2, guarantees that it is convenient for change well mould 2 when impaired, reduces the cost of changing the mould.

Preferably, the second screw holes 22 are countersunk screw holes, and a central connecting line of the two second screw holes 22 is perpendicular to a central connecting line of the two grooves 23. In this application, second screw 22 is arranged in the fixed of well mould 2 and lower mould 3, and the cooperation of guaranteeing well mould 2 and lower mould 3 is fixed a position accurately. The two second screw holes 22 and the two grooves 23 form a cross-shaped structural design, so that the matching precision of the middle die 2 and the lower die 3 is further improved.

Preferably, the second seam allowance 32 is a cylindrical notch which is in clearance fit with the outer diameter of the middle die 2, so as to ensure that the cavities of the forging die structure are consistent after the middle die 2 and the lower die 3 are combined.

Preferably, the upper die 1, the middle die 2 and the lower die 3 are all manufactured by adopting an upsetting-drawing process, and the upper die 1, the middle die 2 and the lower die 3 are all made of 5CrNiMo, so that the structural strength of the upper die 1, the middle die 2 and the lower die 3 is ensured, and the quality of the forging die structure is improved.

Preferably, the upper end surface of the upper die 1 is provided with two first screw holes 12, and the two first screw holes 12 are symmetrically arranged on the upper end surface of the upper die 1 and used for fixing the upper die 1.

Preferably, the upper die cavity 11 of the upper die 1 is provided with a conical chamfer, so that the middle die 2 is more easily sleeved into the first spigot 13 of the upper die 1; the second spigot 32 is provided with a conical chamfer, so that the middle die 2 is more easily sleeved into the second spigot 32 of the lower die 3, and the assembling difficulty of the upper die 1, the middle die 2 and the lower die 3 is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. The utility model provides a forging mould structure of monaural hinge forging which characterized in that: including last mould (1), well mould (2) and lower mould (3), go up mould (1), well mould (2) and lower mould (3) and connect gradually from top to bottom, the lower extreme of going up mould (1) mills first tang (13), two recess (23) have been seted up to the lower terminal surface of well mould (2), be equipped with second screw (22) that run through from top to bottom on well mould (2), the up end of lower mould (3) mills second tang (32), the edge of second tang (32) is equipped with two and recess (23) matched with boss (33), be equipped with two and second screw (22) matched with third screw (34) on second tang (32).

2. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: the first seam allowance (13) is a cylindrical notch which is in clearance fit with the outer diameter of the middle die (2).

3. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: an L part (24) matched with the single-lug hinge is arranged in a middle die cavity (21) of the middle die (2).

4. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: the second screw holes (22) are countersunk head screw holes, and the central connecting line of the two second screw holes (22) is vertically crossed with the central connecting line of the two grooves (23).

5. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: the second spigot (32) is a cylindrical notch which is in clearance fit with the outer diameter of the middle die (2).

6. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: the upper die (1), the middle die (2) and the lower die (3) are all manufactured by adopting an upsetting and drawing process, and the upper die, the middle die and the lower die are all made of 5 CrNiMo.

7. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: the upper end face of the upper die (1) is provided with two first screw holes (12), and the two first screw holes (12) are symmetrically arranged on the upper end face of the upper die (1).

8. The forging die structure of a single-lug hinge forging piece according to claim 1, wherein: go up mould cavity (11) of mould (1) and be equipped with the toper chamfer, second tang (32) are equipped with the toper chamfer.