CN205393284U - Modular forging drift - Google Patents

Modular forging drift Download PDF

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Publication number
CN205393284U
CN205393284U CN201620163374.XU CN201620163374U CN205393284U CN 205393284 U CN205393284 U CN 205393284U CN 201620163374 U CN201620163374 U CN 201620163374U CN 205393284 U CN205393284 U CN 205393284U
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CN
China
Prior art keywords
punch
drift
combination type
forging
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620163374.XU
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Chinese (zh)
Inventor
高锦张
丁燕青
戴挺
周怡君
王兴中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
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Southeast University
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Publication date
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Priority to CN201620163374.XU priority Critical patent/CN205393284U/en
Application granted granted Critical
Publication of CN205393284U publication Critical patent/CN205393284U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a modular forging drift comprises drift head and punch rod portion, and both are separable, through set tenon structural grouping together, wherein punch rod portion comprises several sections highly uniforms, cylinder that the shape is the same, can progressively increase drift length, has avoided the complicated technology of anti - rethreshing mould among traditional sectional type punch hole technology, change drift, has improved production efficiency. Punch rod portion diameter is less than drift head cylinder diameter. Make the drift and the area of contact of the interior pore wall of forging reduce, frictional force reduces greatly, and the acting of forging apparatus overcome friction reduces, has practiced thrift the cost. The power of taking shape reduces simultaneously, has avoided because of the not enough unable processing deep hole of forging press tonnage. The drift head is formed by the integration processing of cylinder and repair area, and the existence in repair area can effectively be forged and closed because of defects such as interior pore wall crackle that shear effect led to the fact, holes.

Description

A kind of combination type forging drift
Technical field
This utility model relates to punching apparatus, is specifically related to a kind of combination type forging drift.
Background technology
Large-scale threeway in fired power generating unit, import and export the hollow forgings such as adapter in forging process, need to carry out deep punch processing, this type of hollow forging long-term work is in high temperature, high pressure, highly radioactive adverse circumstances, and subject the change impact load that high flow rate medium brings, easily produce fatigue damage because of alternate load, the safety coefficient of the overall generating set of impact.Therefore, the comprehensive mechanical performance of hollow forging is proposed high requirement by severe working environment.
The shaping that traditional punching technology carries out deep hole forging is adopted to there is bigger difficulty, for ensureing that forging endoporus does not rush inclined defect, cannot directly adopt long drift, it is generally adopted segmentation punching technology, along with the increase of the punching degree of depth, progressively changing to long drift, there is the drift demoulding, changes drift technique in centre repeatedly, complex production process, production efficiency is low.Additionally along with the increase of the punching degree of depth, the frictional force of punch sidewall and circular hole sidewall increases therewith, increases the difficulty of the demoulding on the one hand, and plastic force sharply increases on the other hand, it is possible to can exceed the working range of forging press.Tradition punching technology relies on drift and intermetallic shear action, heart portion material is torn and goes out, the porosity defect of seam near forging endoporus can be torn by this shear stress again, and causes crack defect at hole wall and inside, destroys the comprehensive mechanical performance of forging.When shaping deep hole forging by machine-tooled methods such as boring, bore holes, because scrap is difficult to recycle, reducing the utilization rate of material, and technological process is complicated, the production cycle is long, and production efficiency is low.
Summary of the invention
The utility model discloses a kind of combination type forging drift, it is made up of punch and plunger rod portion, both are separable, combine by overlapping tenon structure, the cylinder that wherein plunger rod portion is highly consistent by several sections, shape is identical forms, and can be combined into differing heights by set tenon structure, it is achieved the processing of different depth hollow forging endoporus, bar minister's degree is may gradually increase, it is to avoid deep punch process is progressively changed the complicated procedures of forming of drift in rushing deep hole process.
The technical solution of the utility model is: a kind of combination type forging drift, and including punch and plunger rod portion, described punch and plunger rod portion, by overlapping, tenon structure is detachable to be combined;Described plunger rod portion cylinder highly consistent by several sections, that shape is identical forms, it is possible to is combined into differing heights by overlapping tenon structure, can be stepped up bar minister's degree in rushing deep hole process.
Further, described punch is processed by cylinder and repair band integration, and described repair band is moved back mould chamfering by what the bottom outer-edge of punch was arranged and formed with the circular arc changeover portion moving back mould chamfering root natural sparse model.The existence of this repair band can effectively be forged and be closed inner hole wall crackle, the defect such as space caused because of shear action.Drift is in punching course, metal is radially extruded laterally, can effectively forge the defects such as conjunction inner hole wall crackle, space, repair destroyed tissue, arc coupling part repairs the inner hole wall of forging further, the round and smooth degree of inner hole wall and the dimensional accuracy in hole can be effectively improved, make the comprehensive mechanical performance of hollow forging be greatly enhanced.Meanwhile, the machining processes of follow-up endoporus can be avoided, be greatly improved production efficiency.
Further, described plunger rod portion diameter is less than punch cylinder diameter.Described plunger rod portion diameter 18-22mm less of punch cylinder diameter.In punch process, plunger rod portion does not contact forging inner hole wall, is effectively reduced the frictional force between instrument and forging, reduces the plastic force in punch process.
Further, described in move back the angle of mould chamfering and radial direction be 50 °~60 °, chamfer height is 30-50mm, and punch height takes 300~500mm.
Further, the bottom end face diameter of described punch takes 0.6~0.75 punch cylinder diameter.
Further, described circular arc changeover portion radius takes 80~120mm.
Further, described plunger rod portion height takes 600~1200mm, is provided with square tenon bottom bar portion, and described square tenon height takes 50~80mm, and the length of side of square tenon takes 0.7~0.85 times of bar portion diameter;Top, bar portion is provided with square mortise, and the degree of depth of mortise is 50~80mm, and is matched in clearance between square tenon.
Further, described gap is not more than 3mm.
Further, the top of described punch is provided with square mortise, becomes matched in clearance with the square tenon in plunger rod portion.
Beneficial effect:
The present invention has the advantage that and has the benefit effect that
(1) by Combined punch pin, may gradually increase punch length, it is to avoid the demoulding repeatedly in conventional segmental punching technology, change the complicated technology of drift, improve production efficiency.
(2) drift reduces with the contact area of forging inner hole wall, and frictional force is greatly reduced, and forging equipment overcomes friction working to reduce, and has saved cost.Simultaneously plastic force reduces, it is to avoid because forging press tonnage is not enough cannot deep hole processing.
(3) existence of repair band can effectively be forged and be closed inner hole wall crackle, the defect such as hole caused because of shear action.Metal, in punching course, is radially extruded by drift laterally, can effectively forge the defects such as conjunction inner hole wall crackle, space, repair destroyed tissue, improve forming accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation in plunger rod portion;
Fig. 2 is the structural representation of punch;
Fig. 3 is the top view of punch;
Fig. 4 is the enlarged drawing of the repair band of punch.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.
The structure of Combined punch pin is as shown in Figure 1 and Figure 2, this Combined punch pin is made up of punch and plunger rod portion 3, both can be combined by set tenon structure, the cylinder that wherein plunger rod portion is highly consistent by several sections, shape is identical forms, differing heights can be combined into by set tenon structure, realize the processing of different depth hollow forging endoporus, in rushing deep hole process, may gradually increase bar minister's degree, it is to avoid deep punch process is progressively changed the complicated procedures of forming of drift.
Fig. 1 is plunger rod portion, and its height H1 takes 600~1200mm, and bottom is provided with square tenon, and its height H2 takes 50~80mm, the length of side L of square tenon and takes 0.7~0.85 times of bar portion diameter D1.Top is provided with square mortise, and the degree of depth of mortise is H2, and is matched in clearance between square tenon, and gap is not easily more than 3mm.
Being punch as shown in Figure 2 and Figure 3, this punch is made up of cylinder 1 and repair band 2, and both are an overall structure, and top is provided with square mortise, becomes matched in clearance with the square tenon in bar portion;Bottom outer-edge is provided with and moves back mould chamfering, it is prevented that when moving back mould, forging drift and inner hole wall exist shear action, and the angle moving back mould chamfering and radial direction is 60 °, and chamfer height is 35mm.The diameter D2 of head cylinder 1 takes bar portion diameter D1+20mm, and punch process king-rod portion does not contact inner hole wall, it is to avoid the generation of frictional force.The bottom end face diameter D3 of head takes (0.6~0.75) D2, and height of head H3 takes 300~500mm.As shown in Figure 4, the straight incline part of top punch constitutes repair band with circular arc portion, and R1 takes 80~120mm.
In said structure, drift connecting rod only serves the effect of transmission plastic force, does not contact with forging inner hole wall, substantially reduces the frictional force of forging inner hole wall and drift.In the process of processing hollow forging, for preventing forging deformation from losing shape, forging upper and lower end face is sequentially carried out punching.At one end face is punched out adding man-hour, increases plunger rod minister's degree successively by embracing pincers, stops when in the middle part of punching to forging, and with embracing pincers by forging 180 ° upset, plunger rod portion can come off successively, only stays punch at forging endoporus.Being punched out adding man-hour in other end, take another punch, increasing plunger rod minister's degree successively by embracing pincers, until endoporus waste material and punch being gone out, thus completing the processing of forging endoporus.
Although this utility model is disclosed above with preferred embodiment, so it is not limited to this utility model.This utility model art tool usually intellectual, without departing from spirit and scope of the present utility model, when various modifications may be made and retouching.Therefore, protection domain of the present utility model, when being as the criterion depending on those as defined in claim.

Claims (10)

1. a combination type forging drift, it is characterised in that including punch and plunger rod portion (3), tenon structure is detachable to be combined by overlapping for described punch and plunger rod portion (3);Described plunger rod portion (3) cylinder highly consistent by several sections, that shape is identical forms, it is possible to is combined into differing heights by overlapping tenon structure, can be stepped up bar minister's degree in rushing deep hole process.
2. a kind of combination type forging drift according to claim 1, it is characterized in that, described punch is processed by cylinder (1) and repair band (2) integration, and described repair band (2) is moved back mould chamfering (22) by what the bottom outer-edge of punch was arranged and formed with the circular arc changeover portion (21) moving back mould chamfering root natural sparse model.
3. a kind of combination type forging drift according to claim 1, it is characterised in that described plunger rod portion (3) diameter is less than punch cylinder diameter.
4. a kind of combination type forging drift according to claim 3, it is characterised in that described plunger rod portion (3) diameter 18-22mm less of punch cylinder diameter.
5. a kind of combination type forging drift according to claim 2, it is characterised in that described in move back the angle of mould chamfering (22) and radial direction be 50 °~60 °, chamfer height is 30-50mm, and punch height takes 300~500mm.
6. a kind of combination type forging drift according to claim 2 or 5, it is characterised in that the bottom end face diameter of described punch takes 0.6~0.75 punch cylinder diameter.
7. a kind of combination type forging drift according to claim 2, it is characterised in that described circular arc changeover portion (21) radius takes 80~120mm.
8. a kind of combination type forging drift according to claim 1, it is characterized in that, described plunger rod portion (3) highly takes 600~1200mm, is provided with square tenon bottom bar portion, described square tenon height takes 50~80mm, and the length of side of square tenon takes 0.7~0.85 times of bar portion diameter;Top, bar portion is provided with square mortise, and the degree of depth of mortise is 50~80mm, and is matched in clearance between square tenon.
9. a kind of combination type forging drift according to claim 8, it is characterised in that described gap is not more than 3mm.
10. a kind of combination type forging drift according to claim 8, it is characterised in that the top of described punch is provided with square mortise, becomes matched in clearance with the square tenon in plunger rod portion.
CN201620163374.XU 2016-03-03 2016-03-03 Modular forging drift Expired - Fee Related CN205393284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620163374.XU CN205393284U (en) 2016-03-03 2016-03-03 Modular forging drift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620163374.XU CN205393284U (en) 2016-03-03 2016-03-03 Modular forging drift

Publications (1)

Publication Number Publication Date
CN205393284U true CN205393284U (en) 2016-07-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270330A (en) * 2016-09-30 2017-01-04 中国南方航空工业(集团)有限公司 A kind of forging method of high temperature alloy arcuate member
CN106424498A (en) * 2016-09-30 2017-02-22 中国南方航空工业(集团)有限公司 Forming method of arc-shaped forge piece and die applied to forming method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270330A (en) * 2016-09-30 2017-01-04 中国南方航空工业(集团)有限公司 A kind of forging method of high temperature alloy arcuate member
CN106424498A (en) * 2016-09-30 2017-02-22 中国南方航空工业(集团)有限公司 Forming method of arc-shaped forge piece and die applied to forming method
CN106270330B (en) * 2016-09-30 2018-12-14 中国南方航空工业(集团)有限公司 A kind of forging method of high temperature alloy arc-shaped workpiece

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160727

Termination date: 20200303