阅读说明：本技术 一种短夹持半闭式可调节顶锻模具 (Adjustable forging die of short centre gripping semi-closed ) 是由 孙敏 曹雪梅 鞠秀义 单善 于 2021-08-19 设计创作，主要内容包括：一种短夹持半闭式可调节顶锻模具,包括阴模上模、阴模下模、后定位镶块、调节螺栓、锁紧螺母、调节垫片及定位螺栓；阴模下模内设有镶块定位卡槽,后定位镶块上设有定位凸台,二者卡装配合；后定位镶块与阴模下模之间通过定位螺栓固定；后定位镶块中部设有调节螺栓穿装孔,调节螺栓的螺杆从后定位镶块中部调节螺栓穿装孔穿过并延伸至后定位镶块另一侧,锁紧螺母螺接在调节螺栓的螺杆上；调节垫片位于调节螺栓的螺帽与后定位镶块之间；在与后定位镶块顶部正对的阴模上模内设有钳子操作空间。本发明的顶锻模具,能够满足大截面积差短夹持锻件的顶锻制坯且进退料可调节,既可以保证短夹持锻件的顶锻成形质量的稳定性,又可以保证顶锻制坯时的安全性。(A short-clamping semi-closed type adjustable upsetting die comprises a female die upper die, a female die lower die, a rear positioning insert, an adjusting bolt, a locking nut, an adjusting gasket and a positioning bolt; an insert positioning clamping groove is formed in the lower die of the female die, and a positioning boss is arranged on the rear positioning insert and is clamped and matched with the rear positioning insert; the rear positioning insert and the lower die of the female die are fixed through a positioning bolt; the middle part of the rear positioning insert is provided with an adjusting bolt penetrating hole, a screw rod of the adjusting bolt penetrates through the adjusting bolt penetrating hole in the middle part of the rear positioning insert and extends to the other side of the rear positioning insert, and a locking nut is screwed on the screw rod of the adjusting bolt; the adjusting gasket is positioned between the nut of the adjusting bolt and the rear positioning insert; and a clamp operating space is arranged in the female die upper die which is just opposite to the top of the rear positioning insert. The upsetting die disclosed by the invention can meet the requirement of upsetting blanks of large-section product difference short-clamping forged pieces, and the feeding and returning of materials can be adjusted, so that the stability of upsetting forming quality of the short-clamping forged pieces can be ensured, and the safety of upsetting blanks can be ensured.)

1. The utility model provides an adjustable forging die of short centre gripping semi-closed formula which characterized in that: the die comprises a female die upper die, a female die lower die, a rear positioning insert, an adjusting bolt, a locking nut, an adjusting gasket and a positioning bolt; an insert positioning clamping groove is formed in the lower die of the female die, a positioning boss is arranged on the rear positioning insert, and the positioning boss is clamped and matched with the insert positioning clamping groove; the rear positioning insert and the lower die of the female die are fixed through a positioning bolt; an adjusting bolt penetrating hole is formed in the middle of the rear positioning insert, a screw rod of the adjusting bolt penetrates through the adjusting bolt penetrating hole in the middle of the rear positioning insert and extends to the other side of the rear positioning insert, and the locking nut is screwed on the screw rod of the adjusting bolt; the adjusting gasket is positioned between the nut of the adjusting bolt and the rear positioning insert; and a plier operating space is arranged in the female die upper die opposite to the top of the rear positioning insert.

Technical Field

The invention belongs to the technical field of upsetting blanks, and particularly relates to a short-clamping semi-closed adjustable upsetting die.

Background

At present, when the upset forging blank making of a short clamping forging piece is carried out, the prior art still has the following defects:

first, when the knock-out die is of a closed configuration, it is not suitable for a blank whose center of gravity is located in the forming section, and when the pliers are removed, the blank slides down under the action of gravity and is positioned after being fixed, so that the feed and return cannot be adjusted.

Secondly, when a holding clamp positioning method is adopted, although the problem of blank slipping can be solved, feeding and returning are not adjustable, and the production cannot be flexibly applied under the condition that the specification of the blank is unstable.

And thirdly, when the upsetting die adopts a split type rear positioning structure, because the fit clearance between the rear baffle and the female die is larger, when the upsetting piece clamping section is shorter and the rear offset force is larger, the buckling occurs to cause the size of the upsetting piece to be out of control when the rear baffle is arranged, and the hidden danger of thread tripping exists.

Therefore, the existing short-clamping forging piece cannot apply the upsetting blank making technology, and the problems of serious material waste, die abrasion and the like exist in other blank making modes.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a short-clamping semi-closed adjustable upsetting die which can meet the upsetting blank making of a short-clamping forging piece with large cross-section area difference, can adjust feeding and returning, can ensure the stability of the upsetting forming quality of the short-clamping forging piece, can also ensure the safety during upsetting blank making, and avoids the problems of serious material waste, die abrasion and the like when other blank making modes are adopted.

In order to achieve the purpose, the invention adopts the following technical scheme: a short-clamping semi-closed type adjustable upsetting die comprises a female die upper die, a female die lower die, a rear positioning insert, an adjusting bolt, a locking nut, an adjusting gasket and a positioning bolt; an insert positioning clamping groove is formed in the lower die of the female die, a positioning boss is arranged on the rear positioning insert, and the positioning boss is clamped and matched with the insert positioning clamping groove; the rear positioning insert and the lower die of the female die are fixed through a positioning bolt; an adjusting bolt penetrating hole is formed in the middle of the rear positioning insert, a screw rod of the adjusting bolt penetrates through the adjusting bolt penetrating hole in the middle of the rear positioning insert and extends to the other side of the rear positioning insert, and the locking nut is screwed on the screw rod of the adjusting bolt; the adjusting gasket is positioned between the nut of the adjusting bolt and the rear positioning insert; and a plier operating space is arranged in the female die upper die opposite to the top of the rear positioning insert.

The invention has the beneficial effects that:

the short-clamping semi-closed adjustable upsetting die disclosed by the invention can meet the upsetting blank making of a short-clamping forging piece with large cross-section area difference, and the feeding and returning are adjustable, so that the stability of the upsetting forming quality of the short-clamping forging piece can be ensured, the safety during upsetting blank making can be ensured, and the problems of serious material waste, die abrasion and the like in other blank making modes are avoided.

Drawings

FIG. 1 is a schematic structural view of a short grip semi-closed adjustable heading die of the present invention;

FIG. 2 is a schematic view of the female die upper die and female die lower die of the present invention in a snap-fit condition;

FIG. 3 is a schematic view of the structure of the upper mold of the female mold of the present invention;

FIG. 4 is a schematic view of the structure of the lower die of the female die of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic view of the rear positioning insert of the present invention;

FIG. 7 is a schematic view of a regulator shim according to the present invention;

in the figure, 1-female die upper die, 2-female die lower die, 3-rear positioning insert, 4-adjusting bolt, 5-lock nut, 6-adjusting gasket, 7-positioning bolt, 8-insert positioning clamping groove, 9-positioning boss, 10-adjusting bolt penetrating hole, 11-pliers operation space, 12-punch and 13-positioning bolt screwing hole.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1 to 7, a short-clamping semi-closed adjustable upsetting die comprises a female die upper die 1, a female die lower die 2, a rear positioning insert 3, an adjusting bolt 4, a lock nut 5, an adjusting gasket 6 and a positioning bolt 7; an insert positioning clamping groove 8 is formed in the female die lower die 2, a positioning boss 9 is arranged on the rear positioning insert 3, and the positioning boss 9 is clamped and matched with the insert positioning clamping groove 8; the rear positioning insert 3 and the female die lower die 2 are fixed through a positioning bolt 7; an adjusting bolt penetrating hole 10 is formed in the middle of the rear positioning insert 3, a screw rod of the adjusting bolt 4 penetrates through the adjusting bolt penetrating hole 10 in the middle of the rear positioning insert 3 and extends to the other side of the rear positioning insert 3, and the locking nut 5 is in threaded connection with the screw rod of the adjusting bolt 4; the adjusting gasket 6 is positioned between the nut of the adjusting bolt 4 and the rear positioning insert 3; and a plier operating space 11 is arranged in the female die upper die 1 opposite to the top of the rear positioning insert 3.

Taking the upsetting blank of a large three-way joint for a certain aeroengine as an example, the upsetting blank has the characteristic of large cross-section area difference, the clamping section is less than 25mm, and the upsetting blank belongs to a typical short clamping forging.

When upsetting blank, because the back location is inserted 3 and is blocked in the positioning groove of inserting 8 of inserting in bed die lower mould 2 through location boss 9 to still fix through positioning bolt 7 between the two, under the upset shaping effort of drift 12, can prevent effectively that back location is inserted 3 and damage the bolt because of the slope, can avoid simultaneously that the back keeps off the material and warp, has solved the problem that upset size is out of control.

Because the female die upper die 1 right opposite to the top of the rear positioning insert 3 is internally provided with the pliers operating space 11, the pliers can be operated in the pliers operating space 11 all the time in the whole upsetting forming process, and the problem of blank sliding is effectively solved.

Through loading adjusting gasket 6 between the nut of adjusting bolt 4 and rear positioning insert 3, and then through screwing locking nut 5, whole adjusting part can form gapless fastening fit structure to the problem of closed type upsetting can't adjust feeding and returning material is solved, the emergence of screw thread dropout hidden danger has also been avoided simultaneously, security when having guaranteed the upset forging base.

The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.