CN207756831U - The automatic guide structure in hole is squeezed in deep-hole type parts cold-heading - Google Patents
The automatic guide structure in hole is squeezed in deep-hole type parts cold-heading Download PDFInfo
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- CN207756831U CN207756831U CN201820049929.7U CN201820049929U CN207756831U CN 207756831 U CN207756831 U CN 207756831U CN 201820049929 U CN201820049929 U CN 201820049929U CN 207756831 U CN207756831 U CN 207756831U
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- hole
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- lower die
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Abstract
The utility model discloses the automatic guide structures that hole is squeezed in a kind of deep-hole type parts cold-heading, it is related to technology of die manufacturing field, including upper mold, lower die and raw pieces, upper mold includes upper mold stick set, crowded hole rushes stick, guide sleeve, rush stick fixed seat, rush stick lining bar, rush stick cushion block and O-ring, lower die includes lower die mold core and undershoot stick, die cavity is offered on lower die mold core, crowded hole rushes stick and is co-axially located on the inside of guide sleeve, with 0 type circle correcting center between guide sleeve and upper mold stick set, equipped with 3.0mmX3 ° for being inserted in the horn mouth that die cavity plays correcting to correcting at die cavity aperture.Since O-ring has elasticity and toughness, correcting can compensate automatically up and down when being inserted in die cavity, after raw pieces enter in lower die die cavity, guide sleeve, which enters die cavity and squeezes hole with correcting, rushes stick and lower die mold core center, crowded hole rushes stick and carries out the crowded hole of cold-heading to raw pieces again, the concentricity in the effective aperture and outer diameter for ensureing product, keeps product uniform wall thickness consistent.
Description
Technical field
The utility model is related to technology of die manufacturing fields, more specifically, it relates to which a kind of deep-hole type parts cold-heading is squeezed
The automatic guide structure in hole.
Background technology
Deep-hole type parts are often processed with cold heading technique in the prior art, and cold-heading is using mold at normal temperatures to metal
The forging method of bar jumping-up (being often gathering stock) forming, it is possible to reduce or machining is replaced, have production efficiency high, saves
About raw material the advantages that.
In cold-heading deep-hole type parts, metal bar material is put into lower die, upper mold is moved down to being squeezed at metal bar material axis
Pressure squeezes out deep hole at metal bar material axis, and metal bar material deforms and fills lower die, and deep-hole type parts machine.
But the length due to deep-hole type parts and aperture ratio are larger, when upper mold deviates the axis of metal bar material, are easy
Cause the wall unevenness of part even.
Utility model content
Problem in view of the prior art, the utility model provide a kind of automatic guiding knot in the crowded hole of deep-hole type parts cold-heading
Structure by the sliding connection guide sleeve on upper mold stick set, and makes guide sleeve be inserted into die cavity to be pressed in raw pieces so that raw pieces
Top is consistent deformation, reduces part and the even possibility of wall unevenness occurs.
To achieve the above object, the utility model provides following technical solution：
The automatic guide structure in hole is squeezed in a kind of deep-hole type parts cold-heading, including upper die and lower die and raw pieces, feature exist
In the upper mold includes that upper mold stick set and coaxial arrangement rush stick in crowded hole on upper mold stick set, under the lower die includes
Die holder, the die cavity being coaxially opened on the lower die holder and coaxial sliding are connected to the undershoot stick on the lower die holder, described
The die cavity is stretched into undershoot stick one end, and the crowded hole rushes coaxial sleeve on the outside of stick and is equipped with guide sleeve, and the guide sleeve is far from described
One end and the die cavity of mould stick set are mating, and the upper mold stick puts on and coaxially offers through-hole, the guide sleeve with it is described
Through-hole sliding cooperation, the guide sleeve are located at one end in the through-hole and convex to form limiting section, and the through-hole is under described
One end inner wall of die holder convexes to form the first step portion that the guide sleeve movement is limited with limiting section cooperation.
Through the above technical solutions, raw pieces are put into die cavity, undershoot stick is supported raw pieces, utilizes limiting section
With the cooperation in first step portion, guide sleeve by dead weight hanging on upper mold stick set, guide sleeve one end stretch into die cavity and with original
It is abutted at the top of materials and parts, when crowded hole, which rushes stick, carries out punching press to raw pieces, the position that the crowded hole of raw pieces face rushes stick is extruded, raw material
Part is located at the position that crowded hole rushes on the outside of stick and fills up die cavity and be gradually increasing, and guide sleeve is pushed to move up.Due to guide sleeve and crowded Kong Chong
Stick is coaxially disposed so that top is consistent deformation during forming parts, ensures the uniform wall thickness of part, and guide sleeve is also
It can enhance and squeeze the bending strength that hole rushes stick.After forming parts, undershoot stick releases part from die cavity, improves working efficiency.
Further, the top and bottom of the raw pieces coaxially offer rushes stick and undershoot stick with the crowded hole and inserts respectively
Connect the upper guiding groove of cooperation and lower guiding groove.
It is inserted into upper guiding groove through the above technical solutions, squeezing hole and rushing one end of stick, ensureing to squeeze hole, to rush stick coaxial with die cavity, drops
Occurs the even possibility of wall unevenness after low forming parts；Lower guiding groove is inserted into one end of undershoot stick, and limitation raw pieces are in cold-heading
Process moves, and upper guiding groove and lower guiding groove are coaxially disposed, and raw pieces stress evenly, improves Forming Quality.
Further, through-hole axially spaced-apart described in the limiting section upper edge is provided with multiple annular grooves, in the annular groove
Coaxial arrangement is useful for the O-ring of guide sleeve described in correcting, and the guide sleeve outer wall is abutted with the O-ring.
Through the above technical solutions, when the raw pieces of deformation push guide sleeve to slide in through-holes, guide sleeve outer wall and O
Type circle abuts, and since O-ring has elasticity and toughness, can be compensated automatically up and down when die cavity is inserted in correcting, ensures to squeeze hole
It rushes stick and lower die mold core is coaxial, O-ring can effectively ensure the concentricity in the aperture and outer diameter of fabricated part, make fabricated part wall
Thick uniformity.
Further, the crowded hole rush stick outside coaxial sleeve be equipped with rush stick fixed seat, the guide sleeve is close to the limit
The one end in position portion coaxially offers inserting groove, and described one end for rushing stick fixed seat and the inserting groove are mating.
Through the above technical solutions, limiting the deformation squeezed hole and rush stick using stick fixed seat is rushed, enhances and squeeze the bending resistance that hole rushes stick
Intensity；It rushes stick fixed seat one end and guide sleeve is inserted by inserting groove, the length that the crowded hole that stick fixed seat is wrapped up rushes stick is rushed in extension,
The supporting role that stick fixed seat rushes stick to squeezing hole is rushed in enhancing, meanwhile, when guide sleeve slides along through-hole, inserting groove is guide sleeve
Mobile slot milling.
Further, the described one end of stick fixed seat far from the guide sleeve that rushes is provided with flange, on the through-hole wall
The corresponding flange is provided with second step portion, and the through-hole is arranged in the side of the stick fixed seat far from the guide sleeve that rush
There is crowded hole to rush stick cushion block.
It is hung in second step portion by flange through the above technical solutions, rushing stick fixed seat, stick cushion block is rushed using crowded hole
The connection of stick fixed seat and upper mold stick set is rushed in enhancing, meanwhile, rush stick fixed seat, squeeze hole rush the parts such as stick, guide sleeve can be square
Just it is disassembled from upper mold stick set, convenient for being replaced to damage parts.
Further, the crowded hole rushes stick and the crowded hole rushes between stick cushion block and is connected with crowded hole and rushes stick lining bar.
Through the above technical solutions, avoid squeezing hole rush stick entire length it is long, to squeeze hole, to rush stick not pliable.
Further, air discharge duct is offered on the side wall of the die cavity.
Through the above technical solutions, when raw pieces are put into die cavity, there are gap between raw pieces and die cavity, in gap
There are air, when raw pieces are stamped deformation when full of die cavity, these air can be discharged via air discharge duct, without being squeezed
Enter in part, the problems such as hole occurs to reduce part, improve the Forming Quality of part.
Further, the tapered setting of the air discharge duct, internal diameter is by interior increase gradual outwardly.
Through the above technical solutions, air discharge duct inside dimensions are small, the raw material for squeezing into air discharge duct, air discharge duct side dimension are reduced
Greatly, the discharge of air can be accelerated.
Compared with prior art, the utility model has the beneficial effects that：
(1) by the sliding connection guide sleeve on upper mold stick set, and guide sleeve is made to be pressed in raw pieces so that raw pieces top
End is consistent deformation, reduces part and the even possibility of wall unevenness occurs；
(2) by coaxially opening up upper guiding groove and lower guiding groove at the top and bottom of raw pieces, and crowded hole is made to rush stick under
It rushes stick and is inserted into guiding groove and lower guiding groove respectively, stick conveniently is rushed to crowded hole and undershoot stick positions, and ensure that squeezing hole rushes stick
It is coaxial with die cavity with undershoot stick, further decrease the possibility that part wall unevenness is even after being molded；
(3) it since O-ring has elasticity and toughness, can be compensated automatically up and down when die cavity is inserted in correcting, using leading
The positive crowded hole of correcting that covers rushes stick and lower die mold core center, and then crowded hole rushes stick and carries out squeezing hole to raw pieces, effective guarantee product
The concentricity in aperture and outer diameter keeps product uniform wall thickness consistent.
Description of the drawings
Fig. 1 is the overall schematic of the utility model；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the enlarged drawing of B in Fig. 1；
Fig. 4 is the enlarged drawing of C in Fig. 1.
Reference numeral：1, upper mold；2, upper mold stick set；3, through-hole；4, lower die；5, lower die holder；6, lower die mold core；7, die cavity；
9, undershoot stick；10, air discharge duct；11, raw pieces；12, upper guiding groove；13, lower guiding groove；14, second step portion；15, First
Rank portion；16, it squeezes hole and rushes stick；17, stick fixed seat is rushed；18, flange；19, guide sleeve；20, necking part；21, limiting section；22, grafting
Slot；23, it squeezes hole and rushes stick cushion block；24, it squeezes hole and rushes stick lining bar；26, annular groove；27, O-ring；28, horn mouth.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is described in detail.
The automatic guide structure in hole is squeezed in a kind of deep-hole type parts cold-heading, referring to Fig. 1, including upper mold 1, lower die 4 and raw material
Part 11（See Fig. 4）, upper mold 1 includes that upper mold stick covers 2, through-hole 3 is coaxially offered on upper mold stick set 2, in conjunction with Fig. 2 and Fig. 3, through-hole 3
Internal diameter is from top to bottom sequentially reduced and forms second step portion 14 and first step portion 15 at internal diameter variation.
As shown in Figure 1, being useful for carrying out the crowded Kong Chong that hole is squeezed in cold-heading to raw pieces 11 by interior set gradually outwardly in through-hole 3
Stick 16, for reinforcing squeezing, hole rushes 16 bending strength of stick rushes stick fixed seat 17 and guide sleeve for making 11 homogeneous deformation of raw pieces
19.14 upside of second step portion is provided with crowded hole in through-hole 3 and rushes stick cushion block 23, crowded hole rushes stick 16 and the coaxial fixed company of through-hole 3
It is connected to crowded hole and rushes 23 bottom of stick cushion block, crowded hole rushes stick 16 and crowded hole rushes between stick cushion block 23 and is connected with crowded hole and rushes stick lining bar 24, squeezes
Hole rushes 16 diameter of stick and rushes stick lining bar 24 less than hole is squeezed.
As shown in Fig. 2, rushing the 17 T-shaped setting of stick fixed seat, the one end for rushing stick cushion block 23 close to crowded hole convexes to form convex
Edge 18,18 bottom of flange abut with second step portion 14 and since crowded hole rushes the effect of stick cushion block 23 and is pressed on second step portion
On 14, in conjunction with Fig. 1, it is more than to squeeze hole to rush stick lining bar 24 and be set in crowded to rush stick fixed seat 17 and rush one end of stick cushion block 23 far from crowded hole
Hole rushes 16 outside of stick.It rushes the crowded hole of the package of stick fixed seat 17 and rushes stick 16, limit and squeeze the radial deformation that hole rushes stick 16, enhance crowded Kong Chong
The bending strength of stick 16.
In conjunction with Fig. 1 and Fig. 3,19 coaxial sleeve of guide sleeve is set to crowded hole and rushes the outside of stick 16 and with through-hole 3 close to first step
One end sliding connection in portion 15,19 one end of guide sleeve stretch out through-hole 3 and are formed with necking part 20, the other end protrusion of guide sleeve 19
Limiting section 21 is formed, guide sleeve 19 is hung by the cooperation in limiting section 21 and first step portion 15 in through-hole 3.Guide sleeve 19 leans on
Inserting groove 22 coaxially is offered inside the one end in nearly first step portion 15, the lower end for rushing stick fixed seat 17 is stretched into inserting groove 22 simultaneously
With 22 clearance fit of inserting groove.Since guide sleeve 19 and the sliding of through-hole 3 connect, inserting groove 22 is that the movement of guide sleeve 19 reserves sky
Between.
3 axially spaced-apart of inner wall upper edge through-hole that through-hole 3 contacts guide sleeve 19 is provided with multiple annular grooves 26, in annular groove 26
It is coaxially arranged with O-ring 27,19 outer wall of guide sleeve is abutted with O-ring 27.As shown in Figure 1, lower die 4 includes lower die holder 5, lower die holder
It is coaxially connected with lower die mold core 6 on 5, in conjunction with Fig. 4, die cavity 7 is coaxially offered in lower die mold core 6, die cavity is equipped at 7 upper end aperture
3.0mmX3 ° for entering the horn mouth 28 that die cavity 7 plays correcting to guide sleeve 19.When raw pieces 11 are put into die cavity 7, lead
Due to Gravitative Loads, necking part 20 stretches into die cavity 7 and is pressed in the top of raw pieces 11 positive set 19.Since O-ring 27 has bullet
Property and toughness, can be compensated automatically up and down when guide sleeve 19 enters die cavity 7, to squeeze hole rush stick 16 and 6 center of lower die mold core into
Row correcting.
The air discharge duct 10 in gap between connection die cavity 7 and lower die mold core 6 and lower die holder 5, exhaust are offered in lower die mold core 6
10 tapered setting of slot, internal diameter is by interior increase gradual outwardly.Coaxially sliding is connected with undershoot stick 9, undershoot stick 9 on lower die holder 5
One end stretch into die cavity 7.The top and bottom of raw pieces 11 coaxially offer guiding groove 12 and lower guiding groove 13, work as raw pieces
11 when being put into die cavity 7, and crowded hole rushes the lower end of stick 16 and the upper end of undershoot stick 9 and is inserted into guiding groove 12 and lower guiding groove 13 respectively,
Raw pieces 11 are fixed.
The operation principle and advantageous effect of the present embodiment are：
Raw pieces 11 are put into die cavity 7, crowded hole rushes the lower end of stick 16 and the upper end of undershoot stick 9 and is inserted into guiding groove respectively
12 and lower guiding groove 13, raw pieces 11 be coaxially fixed in die cavity 7.Upper mold 1 moves down, and crowded hole rushes stick 16 and carried out to raw pieces 11
Punching press simultaneously forms deep hole at 11 center of raw pieces, and the raw material at deep hole is extruded and makes the top lifting of raw pieces 11, pushes away
Dynamic guide sleeve 19 moves up, and guide sleeve 19 keeps the pressure to raw pieces 11 due to Gravitative Loads so that 11 homogeneous deformation of raw pieces.
27 correcting center of O-ring is used between guide sleeve 19 and upper mold stick set 2, since there is O-ring 27 elasticity and toughness, guide sleeve 19 to enter
Can be compensated automatically up and down when die cavity 7, realize automatic guiding, the effective aperture for ensureing fabricated part and outer diameter it is concentric
Degree, keeps part uniform wall thickness consistent.After forming parts, upper mold 1 moves up, and undershoot stick 9 releases forming part from die cavity 7.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (8)
1. the automatic guide structure in hole, including upper mold are squeezed in a kind of deep-hole type parts cold-heading（1）, lower die（4）And raw pieces（11）,
It is characterized in that, the upper mold（1）Including upper mold stick set（2）And coaxial arrangement is in the upper mold stick set（2）On crowded Kong Chong
Stick（16）, the lower die（4）Including lower die holder（5）, be coaxially opened in the lower die holder（5）On die cavity（7）And it is coaxial sliding
Shifting is connected to the lower die holder（5）On undershoot stick（9）, the undershoot stick（9）The die cavity is stretched into one end（7）, the crowded hole
Rush stick（16）Outside coaxial sleeve is equipped with guide sleeve（19）, the guide sleeve（19）Far from the upper mold stick set（2）One end and institute
State die cavity（7）It is mating, the upper mold stick set（2）On coaxially offer through-hole（3）, the guide sleeve（19）With the through-hole
（3）Sliding cooperation, the guide sleeve（19）Positioned at the through-hole（3）Interior one end convexes to form limiting section（21）, the through-hole
（3）Close to the lower die holder（5）One end inner wall convex to form and the limiting section（21）Cooperation limits the guide sleeve（19）
Mobile first step portion（15）.
2. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 1, which is characterized in that the raw material
Part（11）Top and bottom coaxially offer and rush stick with the crowded hole respectively（16）With undershoot stick（9）Mating upper correcting
Slot（12）With lower guiding groove（13）.
3. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 2, which is characterized in that the limit
Portion（21）Through-hole described in upper edge（3）Axially spaced-apart is provided with multiple annular grooves（26）, the annular groove（26）In be coaxially arranged with
For guide sleeve described in correcting（19）O-ring（27）, the guide sleeve（19）Outer wall and the O-ring（27）It abuts.
4. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 2, which is characterized in that the crowded hole
Rush stick（16）Outside coaxial sleeve be equipped with rush stick fixed seat（17）, the guide sleeve（19）Close to the limiting section（21）One end
Coaxially offer inserting groove（22）, described to rush stick fixed seat（17）One end and the inserting groove（22）It is mating.
5. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 4, which is characterized in that described to rush stick
Fixed seat（17）Far from the guide sleeve（19）One end be provided with flange（18）, the through-hole（3）It is corresponded on inner wall described convex
Edge（18）It is provided with second step portion（14）, the through-hole（3）Stick fixed seat is rushed in described（17）Far from the guide sleeve（19）
Side be provided with crowded hole and rush stick cushion block（23）.
6. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 5, which is characterized in that the crowded hole
Rush stick（16）Stick cushion block is rushed with the crowded hole（23）Between be connected with crowded hole and rush stick lining bar（24）.
7. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 1, which is characterized in that the die cavity
（7）Side wall on offer air discharge duct（10）.
8. the automatic guide structure in hole is squeezed in deep-hole type parts cold-heading according to claim 7, which is characterized in that the exhaust
Slot（10）Tapered setting, internal diameter is by interior increase gradual outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049929.7U CN207756831U (en) | 2018-01-12 | 2018-01-12 | The automatic guide structure in hole is squeezed in deep-hole type parts cold-heading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049929.7U CN207756831U (en) | 2018-01-12 | 2018-01-12 | The automatic guide structure in hole is squeezed in deep-hole type parts cold-heading |
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| Publication Number | Publication Date |
|---|---|
| CN207756831U true CN207756831U (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820049929.7U Active CN207756831U (en) | 2018-01-12 | 2018-01-12 | The automatic guide structure in hole is squeezed in deep-hole type parts cold-heading |
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| CN (1) | CN207756831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304413A (en) * | 2018-10-25 | 2019-02-05 | 思进智能成形装备股份有限公司 | Bottom punch stick cooling device |
-
2018
- 2018-01-12 CN CN201820049929.7U patent/CN207756831U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304413A (en) * | 2018-10-25 | 2019-02-05 | 思进智能成形装备股份有限公司 | Bottom punch stick cooling device |
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