CN108748823A - A kind of forming method of hydraulic pressure safety axis - Google Patents
A kind of forming method of hydraulic pressure safety axis Download PDFInfo
- Publication number
- CN108748823A CN108748823A CN201810509282.6A CN201810509282A CN108748823A CN 108748823 A CN108748823 A CN 108748823A CN 201810509282 A CN201810509282 A CN 201810509282A CN 108748823 A CN108748823 A CN 108748823A
- Authority
- CN
- China
- Prior art keywords
- mold
- deaeration
- preheating
- inner frame
- vulcanizer
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/42—Casting under special conditions, e.g. vacuum
Abstract
A kind of forming method of hydraulic pressure safety axis, belongs to airplane parts manufacturing technology field, solves the problems, such as that the forming method of current hydraulic pressure safety axis exists, it is included in fixed inside and outside skeleton in the lower die of mold；First outer skeleton is placed in the cavity of lower die, then by inner frame and outer skeleton to being just placed in lower die, at this time locating piece is inserted between inner frame and the spline of outer skeleton, it prevents inner frame from rotating, then is threadably fixed inner frame with unification root threaded shaft by the nut one positioned at lower die bottom and the nut two above inner frame；Deaeration processing is carried out to polyurethane rubber；Preheated mold；Filling polyurethane rubber and vulcanizing agent mixed liquor；Deaeration processing is carried out to the mixed liquor；Mold takes out, and parks；Molding vulcanization；Wait for that the viscosity of mixed liquid increases not wire drawing, molding starts to vulcanize into vulcanizing equipment；Vulcanization is completed, demoulding, pickup；The hydraulic pressure safety axis that the present invention is used to be molded between helicopter hydraulic pump and main reducing gear.
Description
Technical field
The invention belongs to airplane parts manufacturing technology fields, and in particular to a kind of forming method of hydraulic pressure safety axis.
Background technology
Play the role of overload protection for the hydraulic pressure safety axis between helicopter hydraulic pump and main reducing gear, quality is straight
Influence flight safety is connect, so it is significant to improve its quality；The hydraulic pressure safety axis includes outer skeleton and inner frame, in outer skeleton
Filling polyurethane Cure of Rubber is molded between inner frame, is provided in the filling polyurethane rubber part of outer skeleton and inner frame
The spline structure not being bonded improves solidification effect to increase the contact surface with polyurethane rubber；At present the hydraulic pressure safety axis at
Type method is that first outer skeleton is placed in the lower die of mold, there is the cavity being adapted with outer skeleton in lower die, can be by dermoskeleton
Frame positions, then by inner frame and outer skeleton to being just placed in lower die, then by nut positioned at lower die bottom and positioned at interior
Nut above skeleton threadably fixes inner frame with unification root threaded shaft, and inside and outside skeleton all fixes in lower die
It can just be irrigated polyurethane rubber, the processes such as molding solidification later；Due to being threadably fixed, in screwing operations
Inner frame easily rotation causes bad to plus effect with outer skeleton, and kiss-coating is uneven between key teeth after filling polyurethane rubber, influences to produce
Quality, therefore the high rejection rate generated is up to 30%；Due also to bubble is difficult to be discharged during filling polyurethane rubber, cause to produce
It is internal after product solidification to have bubble, the functional attributes such as product stretch breaking strength are influenced, the waste product generated because this index is unqualified
Rate is up to 50%.
Invention content
The purpose of the present invention is to solve the forming method of above-mentioned hydraulic pressure safety axis there are the problem of, provide a kind of liquid
The forming method of safety axis is pressed, its technical solution is as follows：
A kind of forming method of hydraulic pressure safety axis, it is poly- comprising following step：
Step 1：The fixed inside and outside skeleton in the lower die of mold；First outer skeleton is placed in the cavity of lower die, then by in-seam
Frame, to being just placed in lower die, is inserted into locating piece between inner frame and the spline of outer skeleton at this time, prevents inner frame with outer skeleton
Rotation, then unification root threaded shaft is matched with screw thread by the nut one positioned at lower die bottom and the nut two above inner frame
Mode fixes inner frame；
Step 2：Deaeration processing is carried out to polyurethane rubber；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h；
Step 3：Preheated mold；Device therefor is vulcanizer, first preheats vulcanizer, and vulcanizer preheating temperature is 0 to 200 DEG C, sulphur
Change machine preheating pressure is 2 to 20Mpa, and vulcanizer preheating time is 0.1-20h；Then mold clamping is put into vulcanizer preheating,
Mold preheating temperature is 0 to 200 DEG C, and mold preheating pressure is 2 to 20Mpa, and mold preheating time is 1 to 4h；
Step 4：Filling polyurethane rubber and vulcanizing agent mixed liquor；After causing it all to melt vulcanizing agent heating, after deaeration
Polyurethane rubber is mixed and is stirred evenly rapidly, opens the mold after preheating, and the mixed liquor is injected the mould between inside and outside skeleton
Chamber；The mass ratio of vulcanizing agent and filling polyurethane rubber is 1：6；
Step 5：Deaeration processing is carried out to the mixed liquor；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h, and lower die, which is put into vacuum drying oven, carries out deaeration processing；Then
Subsequent step is carried out again.
The subsequent step includes step 6：Mold takes out, and parks；
Step 7：Molding vulcanization；Wait for that the viscosity of mixed liquid increases not wire drawing, molding starts to vulcanize into vulcanizing equipment；
Step 8：Vulcanization is completed, demoulding, pickup.
Beneficial effects of the present invention are：It is inserted into locating piece between inner frame and the spline of outer skeleton, has filled up interior external tooth both sides
Gap, can effectively prevent inner frame rotation, it is ensured that the accurate contraposition of inside and outside skeleton, screw positioning after pull out locating piece i.e.
Can, prevent the non-uniform phenomenon of kiss-coating caused by due to inner frame rotates, yield rate improves 30% compared with the prior art；Perfusion is poly-
Deaeration processing has been carried out before and after urethane rubber and vulcanizing agent mixed liquor, bubble can effectively be discharged, and under vacuum conditions
Vulcanization, is more advantageous to effective discharge of bubble, solves due to the waste product that bubble row does not go out and generates, yield rate can reach
100%, and it is simple for process, it is easy to operate.
Description of the drawings：
Fig. 1 is the schematic diagram of fixed inside and outside skeleton in lower die in the present invention；
Fig. 2 is the schematic diagram of locating piece；
Fig. 3 be inside and outside skeleton spline between be inserted into locating piece schematic diagram.
Specific implementation mode：
Referring to figs. 1 to Fig. 3, a kind of forming method of hydraulic pressure safety axis, it is poly- comprising following step：
Step 1：The fixed inside and outside skeleton in the lower die 3 of mold；First outer skeleton 1 is placed in the cavity of lower die 3, then will
Inner frame 2, to being just placed in lower die 3, is inserted into locating piece 4 between inner frame 2 and the spline of outer skeleton 1 at this time with outer skeleton 1,
Prevent inner frame 2 from rotating, then by the nut 1 positioned at 3 bottom of lower die and the nut 26 above inner frame 2 with unification
Root threaded shaft 7 threadably fixes inner frame 2；
Step 2：Deaeration processing is carried out to polyurethane rubber；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h；
Step 3：Preheated mold；Device therefor is vulcanizer, first preheats vulcanizer, and vulcanizer preheating temperature is 0 to 200 DEG C, sulphur
Change machine preheating pressure is 2 to 20Mpa, and vulcanizer preheating time is 0.1-20h；Then mold clamping is put into vulcanizer preheating,
Mold preheating temperature is 0 to 200 DEG C, and mold preheating pressure is 2 to 20Mpa, and mold preheating time is 1 to 4h；
Step 4：Filling polyurethane rubber and vulcanizing agent mixed liquor；After causing it all to melt vulcanizing agent heating, after deaeration
Polyurethane rubber is mixed and is stirred evenly rapidly, opens the mold after preheating, and the mixed liquor is injected the mould between inside and outside skeleton
Chamber；The mass ratio of vulcanizing agent and filling polyurethane rubber is 1：6；
Step 5：Deaeration processing is carried out to the mixed liquor；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h, and lower die 3, which is put into vacuum drying oven, carries out deaeration processing；So
Carry out subsequent step again afterwards.
The subsequent step includes step 6：Mold takes out, and parks；
Step 7：Molding vulcanization；Wait for that the viscosity of mixed liquid increases not wire drawing, molding starts to vulcanize into vulcanizing equipment；
Step 8：Vulcanization is completed, demoulding, pickup.
Preferably, step 2：Deaeration processing is carried out to polyurethane rubber；Device therefor is vacuum drying oven, deaeration temperature
It it is 100 DEG C, deaeration pressure is -30Kpa, inclined heated plate 1h；
Step 3：Preheated mold；Device therefor is vulcanizer, first preheats vulcanizer, and vulcanizer preheating temperature is 100 DEG C, vulcanization
Machine preheating pressure is 10Mpa, and vulcanizer preheating time is 0.2h；Then mold clamping is put into vulcanizer preheating, mold preheating
Temperature is 100 DEG C, and mold preheating pressure is 10Mpa, and mold preheating time is 2h；
Step 5：Deaeration processing is carried out to the mixed liquor；Device therefor is vacuum drying oven, and deaeration temperature is 100 DEG C, deaeration pressure
Power is -30Kpa, inclined heated plate 1h.
Preferably, the locating piece 4 being inserted between the spline is two, and two locating pieces 4 are by a handle 8 come even
It connects.
Claims (4)
1. a kind of forming method of hydraulic pressure safety axis, it is poly- comprising following step：
Step 1：The fixed inside and outside skeleton in the lower die (3) of mold；First outer skeleton (1) is placed in the cavity of lower die (3),
Then by inner frame (2) and outer skeleton (1) to being just placed in lower die (3), it is characterised in that at this time in inner frame (2) and dermoskeleton
It is inserted into locating piece (4) between the spline of frame (1), prevents inner frame (2) from rotating, then the nut one (5) by being located at lower die (3) bottom
It is threadably that inner frame (2) are fixed with unification root threaded shaft (7) with the nut two (6) above inner frame (2)；
Step 2：Deaeration processing is carried out to polyurethane rubber；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h；
Step 3：Preheated mold；Device therefor is vulcanizer, first preheats vulcanizer, and vulcanizer preheating temperature is 0 to 200 DEG C, sulphur
Change machine preheating pressure is 2 to 20Mpa, and vulcanizer preheating time is 0.1-20h；Then mold clamping is put into vulcanizer preheating,
Mold preheating temperature is 0 to 200 DEG C, and mold preheating pressure is 2 to 20Mpa, and mold preheating time is 1 to 4h；
Step 4：Filling polyurethane rubber and vulcanizing agent mixed liquor；After causing it all to melt vulcanizing agent heating, after deaeration
Polyurethane rubber is mixed and stirred for uniformly, opening the mold after preheating, and the mixed liquor is injected the die cavity between inside and outside skeleton；Sulphur
The mass ratio of agent and filling polyurethane rubber is 1：6；
Step 5：Deaeration processing is carried out to the mixed liquor；Device therefor is vacuum drying oven, and deaeration temperature is 50 DEG C to 200 DEG C,
Deaeration pressure is -1 to -100Kpa, and inclined heated plate is 0.5 to 240h, and lower die 3, which is put into vacuum drying oven, carries out deaeration processing；So
Carry out subsequent step again afterwards.
2. a kind of forming method of hydraulic pressure safety axis as described in claim 1, it is characterised in that the subsequent step includes step
Six：Mold takes out, and parks；Step 7：Molding vulcanization；Step 8：Vulcanization is completed, demoulding, pickup.
3. a kind of forming method of hydraulic pressure safety axis as described in claim 1, it is characterised in that step 2：To polyurethane rubber into
Row deaeration is handled；Device therefor is vacuum drying oven, and deaeration temperature is 100 DEG C, and deaeration pressure is -30Kpa, inclined heated plate 1h；
Step 3：Preheated mold；Device therefor is vulcanizer, first preheats vulcanizer, and vulcanizer preheating temperature is 100 DEG C, vulcanization
Machine preheating pressure is 10Mpa, and vulcanizer preheating time is 0.2h；Then mold clamping is put into vulcanizer preheating, mold preheating
Temperature is 100 DEG C, and mold preheating pressure is 10Mpa, and mold preheating time is 2h；
Step 5：Deaeration processing is carried out to the mixed liquor；Device therefor is vacuum drying oven, and deaeration temperature is 100 DEG C, deaeration pressure
Power is -30Kpa, inclined heated plate 1h.
4. a kind of forming method of hydraulic pressure safety axis as described in claim 1, it is characterised in that the positioning being inserted between the spline
Block (4) is two, and two locating pieces (4) are connected by a handle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509282.6A CN108748823B (en) | 2018-05-24 | 2018-05-24 | Forming method of hydraulic safety shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509282.6A CN108748823B (en) | 2018-05-24 | 2018-05-24 | Forming method of hydraulic safety shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108748823A true CN108748823A (en) | 2018-11-06 |
| CN108748823B CN108748823B (en) | 2020-04-03 |
Family
ID=64005652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810509282.6A Active CN108748823B (en) | 2018-05-24 | 2018-05-24 | Forming method of hydraulic safety shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108748823B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434684A (en) * | 2019-08-15 | 2019-11-12 | 李启明 | A kind of sanding and polishing method of 5G mobile phone screen and rear cover |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842785A (en) * | 1985-09-19 | 1989-06-27 | Les Industries Fortier Ltee | Method for installing gasket in a poured concrete structure |
| JP2009197937A (en) * | 2008-02-22 | 2009-09-03 | Cordialtec:Kk | Shock absorber, its manufacturing method, and vibration damping device |
| CN201568521U (en) * | 2009-11-14 | 2010-09-01 | 安徽中鼎减震橡胶技术有限公司 | Anti-seepage hydraulic suspension structure of engine |
| US20110138999A1 (en) * | 2009-12-15 | 2011-06-16 | Uop Llc | Metal organic framework polymer mixed matrix membranes |
| CN201922881U (en) * | 2010-09-07 | 2011-08-10 | 吉林大学 | Semi-active control magnetorheological hydraulic suspension for automobile power assembly |
| CN203046868U (en) * | 2012-12-12 | 2013-07-10 | 北汽福田汽车股份有限公司 | Engine suspension cushion and automobile comprising same |
| CN203548920U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine shaft sleeve oil seal |
| CN105965738A (en) * | 2016-06-03 | 2016-09-28 | 西安北方光电科技防务有限公司 | Pouring method for pouring molding of special-shaped coil former |
| CN206999456U (en) * | 2017-03-02 | 2018-02-13 | 广西银钻电气有限公司 | Resin-cast coil die tenses positioner |
-
2018
- 2018-05-24 CN CN201810509282.6A patent/CN108748823B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842785A (en) * | 1985-09-19 | 1989-06-27 | Les Industries Fortier Ltee | Method for installing gasket in a poured concrete structure |
| JP2009197937A (en) * | 2008-02-22 | 2009-09-03 | Cordialtec:Kk | Shock absorber, its manufacturing method, and vibration damping device |
| CN201568521U (en) * | 2009-11-14 | 2010-09-01 | 安徽中鼎减震橡胶技术有限公司 | Anti-seepage hydraulic suspension structure of engine |
| US20110138999A1 (en) * | 2009-12-15 | 2011-06-16 | Uop Llc | Metal organic framework polymer mixed matrix membranes |
| CN201922881U (en) * | 2010-09-07 | 2011-08-10 | 吉林大学 | Semi-active control magnetorheological hydraulic suspension for automobile power assembly |
| CN203046868U (en) * | 2012-12-12 | 2013-07-10 | 北汽福田汽车股份有限公司 | Engine suspension cushion and automobile comprising same |
| CN203548920U (en) * | 2013-11-25 | 2014-04-16 | 芜湖市鸿坤汽车零部件有限公司 | Automobile engine shaft sleeve oil seal |
| CN105965738A (en) * | 2016-06-03 | 2016-09-28 | 西安北方光电科技防务有限公司 | Pouring method for pouring molding of special-shaped coil former |
| CN206999456U (en) * | 2017-03-02 | 2018-02-13 | 广西银钻电气有限公司 | Resin-cast coil die tenses positioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434684A (en) * | 2019-08-15 | 2019-11-12 | 李启明 | A kind of sanding and polishing method of 5G mobile phone screen and rear cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108748823B (en) | 2020-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102683232B (en) | A kind of semiconductor packaging mold and packaging technology thereof | |
| CN108748823A (en) | A kind of forming method of hydraulic pressure safety axis | |
| CN207643527U (en) | A kind of plastic barrel molding die | |
| CN211279465U (en) | Injection molding machine for electronic plastic parts | |
| CN106626220A (en) | Injection molding apparatus | |
| CN108247960A (en) | A kind of injection mold with refrigerating function | |
| CN212171114U (en) | Feeding device for injection molding shoe mold | |
| CN104626450B (en) | Suitable for the Shooting Technique of multi-cave mould | |
| CN211917548U (en) | Product drawing of patterns shape mechanism of preapring for an unfavorable turn of events | |
| CN210880702U (en) | Mould capable of quickly demoulding | |
| CN210552358U (en) | Intra-membrane compounding device for carbon fiber reinforced thermoplastic composite unidirectional belt | |
| CN209207996U (en) | A kind of high specific strength bottle base processing unit (plant) | |
| CN210047007U (en) | Injection mold for plastic shell | |
| CN105291348A (en) | Technology for coating conductive resin and plastics through liquid silica gel | |
| CN106142493A (en) | Injection machine and control method thereof | |
| CN205130308U (en) | Improve air discharge performance's special screw rod of injection molding machine | |
| CN207156376U (en) | A kind of band is segmented the injection molding gun of two rotating speed screw rods | |
| CN102179937B (en) | Processing method and processing device for rubber tube material molding | |
| CN208359386U (en) | One kind can the molding injection mold of batch | |
| CN219044147U (en) | Lifting resin injection machine | |
| CN216465980U (en) | Injection molding machine with auxiliary demolding structure | |
| CN215921148U (en) | Knife valve inner wall vulcanization mould utensil | |
| CN208992977U (en) | Portable electric generator outer casing mold | |
| CN213082139U (en) | Injection mold with rapid prototyping function | |
| CN214353761U (en) | Integrated mixed modification injection molding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |