CN202263881U

CN202263881U - Forging die

Info

Publication number: CN202263881U
Application number: CN2011204198884U
Authority: CN
Inventors: 颜建斌
Original assignee: DONGFENG FORGING Co Ltd
Current assignee: DONGFENG FORGING Co Ltd
Priority date: 2011-10-30
Filing date: 2011-10-30
Publication date: 2012-06-06
Anticipated expiration: 2021-10-30

Abstract

The utility model provides a forging die, which comprises a lower die holder, an upper die holder, a female die, a lower die insert, a female die fixing ring and a male die fixing ring. A male die is fixed onto the upper die holder through the male die fixing ring, the female die is fixed onto the lower die holder through the female die fixing ring, the female die fixing ring is arranged outside the female die, an upper ejector rod hole is arranged in the center of the lower die insert, a lower ejector rod hole is arranged in the center of the lower die holder, the upper ejector rod hole is communicated with the lower ejector rod hole to form a female die ejector rod hole, a female die ejector rod is arranged in the female die ejector rod hole, the diameter of the upper ejector rod hole is larger than that of the lower ejector rod hole, the diameter of an upper section of the female die ejector rod is larger than that of a lower section of the female die ejector rod, a joint between the upper section and the lower section of the female die ejector rod is in an inverted conical shape, and an upper end opening of the lower ejector rod hole is provided with an inverted conical surface matched with the upper end opening. By the aid of the forging die, disc parts such as gears and the like can be forged in a closed mode on a common hot die forging press, material consumption caused by flash is avoided, materials are saved by 10%-15% on average, a trimming procedure is omitted, and manufacturing cost is reduced.

Description

A kind of forging mold

Technical field

The utility model relates to a kind of mould, especially a kind of forging mold.

Background technology

Non-trimming forges and refers to that forging does not produce overlap in the forging process, forges (open type forging) with respect to traditional overlap that has, and it is called closed-die forging.Closed-die forging belongs to the finish forge category, is one of nearly forming technique in the forging industry.

But at present enclosed is forged the disk-like accessory of main Φ 160 below, is subject to mould structure and liftout is provided with problem, and the disk-like accessory of Φ 240-Φ 260 diameters does not carry out the enclosed forging process to be tested, and adopts the open type forging process to carry out always.The shortcoming that this method exists: have the overlap of forging while overlap weight to reach 0.5-0.8kg after (1) open type is forged, so just wasted raw material, increase material cost; (2) need to increase the operation of cutting edge together,, increased the complexity of associating mould for the forging that need press word towards the former hole.

Summary of the invention

The purpose of the utility model provides a kind of forging mold, can be implemented on the ordinary hot drop press disk-like accessory like gear etc. is carried out closed-die forging.

In order to solve the problems of the technologies described above, the technical scheme of the utility model is following: a kind of forging mold comprises that die shoe, upper bolster, die, counterdie are inserted, die retainer plate, punch retainer plate; Said punch is fixed on the upper bolster through the punch retainer plate, and die is fixed on the die shoe through the die retainer plate, and die mould circle is located at the outside of die; It is characterized in that: the said counterdie center of inserting is provided with the upper ejector pin hole; The die shoe center is provided with the lower push rod hole, and the upper ejector pin hole is communicated with the lower push rod hole forms the die-pin hole, and die-pin is located in the die-pin hole; The diameter in upper ejector pin hole is greater than the diameter in lower push rod hole; The diameter of die-pin epimere is greater than the diameter of hypomere, and epimere and hypomere junction are provided with the back taper transition, and the port in lower push rod hole is provided with inverted cone surface with matching.

Improvement to technique scheme: said epimere and hypomere junction are provided with 45 ° back taper transition, and the port in lower push rod hole inverted cone surface with matching is 45 °.

Beneficial effect:

Use the described forging mold of the utility model, the material jacking mechanism that die-pin and die shoe constitute is arranged on the liftout stroke outside the mould, makes The mould features compact structure, and it is high to have reduced the mould envelope, has improved mould strength; Epimere and hypomere junction are provided with the back taper transition; The port in lower push rod hole is provided with inverted cone surface with matching; Push rod adopts the conical surface to contact with die holder simultaneously, and conical surface angle is 45o, improves the force-bearing situation of push rod; Solve the stuck problem of push rod local deformation, can not bend when push rod ejects forging continuously.Realized on the ordinary hot drop press disk-like accessory like gear etc. is carried out closed-die forging, the non-trimming spillage of material, average economical with materials 10-15% has saved the side cut operation simultaneously, has reduced manufacturing cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the die-pin structural representation.

Fig. 3 is the die shoe structural representation.

Fig. 4 is the A-A view of Fig. 3.

Among Fig. 1: 1, die shoe; 2, die; 3, counterdie is inserted; 4, die-pin; 5, die retainer plate; 6, punch retainer plate; 7, upper bolster; 8, punch.

The specific embodiment

A kind of forging mold of the utility model as shown in Figure 1 comprises that die shoe 1, upper bolster 7, die 2, counterdie insert 3, die retainer plate 5, punch retainer plate 6, and said punch 2 is fixed on the upper bolster 7 through punch retainer plate 6; Die 2 is fixed on the die shoe 1 through die retainer plate 6; Die mould circle 5 is located at the outside of die 2, and said counterdie 3 centers of inserting are provided with the upper ejector pin hole, and die shoe 1 center is provided with the lower push rod hole; The upper ejector pin hole is communicated with the lower push rod hole forms the die-pin hole; Die-pin 4 is located in the die-pin hole, and the diameter in upper ejector pin hole is greater than the diameter in lower push rod hole, and the diameter of die-pin 4 epimeres is greater than the diameter of hypomere; Epimere and hypomere junction are provided with 45 ° of back taper transition, and the port in lower push rod hole is provided with 45 ° of inverted cone surfaces with matching.

Principle analysis:

Like Fig. 1:

Die shoe 1 plays mold position and fixing effect.At first it keeps the location through flat key and clamper backing plate, guarantee upper and lower mould to heart degree, the while is fixed through pressing plate and clamper again.Die shoe 1 another important function supports die-pin 4 exactly, guarantees the ejector beam precision.

Die 2 is the die cavity part of mould, is to guarantee the very important part of forging precision.The working portion of die 2 is the parts as Die lock catch simultaneously, is the datum level of each circle in the die cavity.

Counterdie inserts 3 for the mold cavity part, the part of the lower die size and the precision of it and die 2 common guarantee forging.

Die-pin 4 is vital parts of closed forging die tool, could guarantee that through the design of die-pin 4 strokes forging ejects die cavity smoothly, makes and produces smooth and easy carrying out.Die-pin 4 is the part of forging die cavity simultaneously, needs groping experience, draws the correct design parameter of cavity dimension.

Upper bolster 7 also is to play mold position and fixing effect, and it keeps the location through flat key and clamper backing plate, guarantee upper and lower mould to heart degree, the while is fixed through pressing plate and clamper again.

Punch 8 also is the die cavity part of mould, and it cooperates the assurance forging ' s block dimension with die 2, guarantees that with die 2 gaps the motion of mould cooperates through design punch 8, guarantees that simultaneously forging does not have burr.

Die retainer plate 5 and punch retainer plate 6 are respectively applied for upper and lower mould inserted and are fixed on upper bolster 7 and the die shoe 1.

The utility model is simple in structure, can on the ordinary hot drop press, realize the closed-die forging of disk-like accessory.In the use, during slide block down work, punch 8 gets in the die 2, forms near closed hollow ring, and the forging enclosed is shaped, and when slide block was up, die-pin 4 ejected forging from die 2 die cavities.

Like Fig. 2:

The section diameter that die-pin 4 is participated in forging forming is big; The diameter that guarantees liftout stroke part is little, can the liftout stroke be arranged on mould outer (in the mould bases), so significantly reduced the thickness of die shoe; Make mould structure compact more; Guaranteed in existing mould bases space, accomplished the closed forging die structure design of signing an undertaking, the enclosed that can realize diameter of phi 160-Φ 260 fluted disc class parts is forged and is produced.With 45 o conical surface transition, force structure is good between 4 two sections diameters of while die-pin.

Like Fig. 1, Fig. 3:

In the forging forming process; The reaction force acts that blank is shaped is on die-pin 4, and die-pin 4 is delivered to power on the die shoe 1, because die-pin 4 and die shoe 1 employing is cone match; Improved the stress of die-pin 4; Make die-pin 4 mainly receive three-dimensional compressive stress, jumping-up can not take place be out of shape stuck problem, die-pin 4 ejects reliable and stable.

Claims

1. forging mold comprises that die shoe, upper bolster, die, counterdie are inserted, die retainer plate, punch retainer plate, and said punch is fixed on the upper bolster through the punch retainer plate; Die is fixed on the die shoe through the die retainer plate; Die mould circle is located at the outside of die, it is characterized in that: the said counterdie center of inserting is provided with the upper ejector pin hole, and the die shoe center is provided with the lower push rod hole; The upper ejector pin hole is communicated with the lower push rod hole forms the die-pin hole; Die-pin is located in the die-pin hole, and the diameter in upper ejector pin hole is greater than the diameter in lower push rod hole, and the diameter of die-pin epimere is greater than the diameter of hypomere; Epimere and hypomere junction are provided with the back taper transition, and the port in lower push rod hole is provided with inverted cone surface with matching.

2. a kind of forging mold according to claim 1 is characterized in that: said epimere and hypomere junction are provided with 45 ° back taper transition, and the port in lower push rod hole inverted cone surface with matching is 45 °.