CN201832860U - Closed end blind hole cold extrusion forming die of energy accumulator shell - Google Patents
Closed end blind hole cold extrusion forming die of energy accumulator shell Download PDFInfo
- Publication number
- CN201832860U CN201832860U CN2010205304388U CN201020530438U CN201832860U CN 201832860 U CN201832860 U CN 201832860U CN 2010205304388 U CN2010205304388 U CN 2010205304388U CN 201020530438 U CN201020530438 U CN 201020530438U CN 201832860 U CN201832860 U CN 201832860U
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- die
- blind hole
- closed end
- energy accumulator
- accumulator
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Abstract
The utility model discloses a closed end blind hole cold extrusion forming die of an energy accumulator shell, which comprises an upper convex die, a concave die, a prestress middle sleeve, a prestress outer sleeve and a lower convex die, wherein the lower convex die is arranged at the bottom of the concave die, the prestress middle sleeve is arranged between the prestress outer sleeve and the concave die, the center of the end surface of the upper convex die is provided with a convex block, and the lower convex die and the closed end of the energy accumulator shell are provided with split spaces formed by blocking. Metal volume distribution is reasonably carried out by the extrusion technology, so the defect that a processing method of a closed end blind hole forming machine of the energy accumulator shell of the prior art has large processing difficulty and wastes raw materials is overcome, the manufacturing cost is reduced, the production cycle is shortened, the production process is stable, and the product qualification ratio is increased.
Description
Technical field
The utility model belongs to forging precise forming process technical field, is specifically related to a kind of accumulator closed termination of outer cover blind hole cold extrusion forming mould.
Background technology
The effect of accumulator is that the pressure oil in the hydraulic system is stored, and emits again when needed.In the hydraulic system of discontinuous operation or sexual act circulation performance period, accumulator can store the unnecessary pressure oil of hydraulic pump output.When system needs, discharge by accumulator.Can reduce the metered flow of hydraulic pump like this, thereby reduce power of motor consumption, reduce the hydraulic system temperature rise.Be failure to actuate for a long time for executive component, and will keep the system of constant pressure, available accumulator compensates leakage, thereby makes constant pressure.When pump broke down or have a power failure, when executive component should continue to finish necessary operation, the accumulator that needs suitable capacity was made emergency power source to some system requirements.Impact during the pressure jump of accumulator energy absorption system starts or stops suddenly as hydraulic pump, and hydraulic valve cuts out suddenly or opens, and hydraulic cylinder moves suddenly or stops; The caused pressure fluctuation of flow pulsation in the time of also absorbing hydraulic pump works is equivalent to the smothing filtering in the oil circuit.Accumulator comprises cylindrical housings and is located at the capping at housing two ends, one end capping center is provided with interface, other end capping center is provided with the liquid in-out interface, as shown in Figure 1, 2, general accumulator housing is a cylindrical structure, the one end sealing of described cylindrical housings, described blind end 1 is provided with blind hole 3, an other end opening of described cylindrical housings; The shell of described cylindrical housings is two cylinders that diameter differs, and described cylindrical housings openend 2 outer diameters are greater than blind end 1 outer diameter, and described blind hole is arranged on the center of housings close end, and described blind hole is the Magen David structure.The housing of accumulator is the important component part of accumulator, need bear most pressure in the time of in working order, so whether the design of housing parts is rationally most important to accumulator.In traditional design, in view of the importance of safety problem, the design of accumulator is often relatively conservative, makes the housing of design seem not only stupid but also heavy; Conservative design can cause that user and manufacturing firm's cost rise, thereby causes some unnecessary wastes, and on the other hand, the housing of accumulator is owing to complex structure, and the machined difficulty is big and cost is high.Manufacturing firm all adopts precision forging blank technology both at home and abroad at present, can satisfy required precision like this, has reduced manufacturing cost and cycle again, also meets the trend of world today's development of manufacturing simultaneously.
Summary of the invention
A kind of accumulator closed termination of outer cover blind hole cold extrusion forming mould that the purpose of this utility model provides, the existing accumulator shell blind hole forming machine difficulty of processing of solution is big, forming process long, technical problems such as material consumption is many, product percent of pass is low, forming efficiency difference.
The technical scheme that its technical problem that solves the utility model adopts is as follows: accumulator closed termination of outer cover blind hole cold extrusion forming mould, comprise cover, prestressing force overcoat and lower punch in punch, die, the prestressing force, described lower punch is located at the bottom of die, be provided with in the prestressing force between prestressing force overcoat and the die and overlap, described end face center of going up punch is provided with projection, and described lower punch and accumulator closed termination of outer cover are provided with inaccessible the shaping and divide fluid space.
Described projection is a hexgonal structure.
Be provided with in the prestressing force between the utility model prestressing force overcoat and the die and overlap, reduce mould and bear extrusion pressure; It is the accumulator spare interface that the end face center of last punch is provided with projection, and lower punch and accumulator closed termination of outer cover are provided with inaccessible the shaping and divide fluid space, reasonably carry out metal volume distribution in the extrusion process; Solved that existing accumulator shell blind hole forming machine difficulty of processing is big, forming process is long, technical problems such as material consumption is many, product percent of pass is low, forming efficiency difference.
The beneficial effects of the utility model are: the utility model is on the basis of accumulator outer cover intensity and precision, according to the metal flow shaping characteristic, adopt extrusion technique reasonably to carry out metal volume distribution, both overcome that prior art accumulator closed termination of outer cover blind hole forming machine processing method production and processing difficulty is big, the phenomenon of waste of raw materials, reduced manufacturing cost again, shortened the production cycle simultaneously, and stable processing technique, product percent of pass improved.
Description of drawings
Fig. 1 is the front view of accumulator housing
Fig. 2 is the right view of Fig. 1
Fig. 3 is a structural representation of the present utility model
Sequence number among the figure: 1, blind end, 2, openend, 3, blind hole, 4, go up punch, 5, die, 6, overlap in the prestressing force, 7, the prestressing force overcoat, 8, lower punch, 9, divide fluid space, 10, projection.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.Referring to Fig. 3, a kind of accumulator closed termination of outer cover blind hole cold extrusion forming mould, comprise overlap 6 in punch 4, die 5, the prestressing force, prestressing force overcoat 7 and lower punch 8, described lower punch 8 is located at the bottom of die 5, be provided with between prestressing force overcoat 7 and the die 5 and overlap 6 in the prestressing force, described end face center of going up punch 4 is provided with projection 10, and described projection 10 is a hexgonal structure, and described lower punch 8 is provided with inaccessible the shaping with the accumulator closed termination of outer cover and divides fluid space 9.
Use the 400T punching machine, on four guide pillar universal die sets, install overlap 6 in die 5, the prestressing force, prestressing force overcoat 7 and lower punch 8, preform accumulator shell is upside down on the lower punch 8, pressing down punch 4 by drift forges, the hexgonal structure projection 10 that the end face center of last punch 4 is provided with forces preform accumulator closed termination of outer cover to flow to the branch fluid space 9 that lower punch 8 and preform accumulator closed termination of outer cover form, accumulator closed termination of outer cover blind hole is shaped, reasonably carry out metal volume distribution in the extrusion process, reaching does not once have waste material and is shaped only.
Embodiment is just for the ease of understanding the technical solution of the utility model; do not constitute restriction to the utility model protection domain; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present utility model above scheme being done that does not break away from technical solutions of the utility model all still belongs within the utility model protection domain.
Claims (2)
1. accumulator closed termination of outer cover blind hole cold extrusion forming mould, comprise cover (6), prestressing force overcoat (7) and lower punch (8) in punch (4), die (5), the prestressing force, described lower punch (8) is located at the bottom of die (5), be provided with cover (6) in the prestressing force between prestressing force overcoat (7) and the die (5), it is characterized in that: described end face center of going up punch (4) is provided with projection (10), and described lower punch (8) is provided with inaccessible the shaping with the accumulator closed termination of outer cover and divides fluid space (9).
2. accumulator closed termination of outer cover blind hole cold extrusion forming mould according to claim 1 is characterized in that: described projection (10) is a hexgonal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205304388U CN201832860U (en) | 2010-09-10 | 2010-09-10 | Closed end blind hole cold extrusion forming die of energy accumulator shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205304388U CN201832860U (en) | 2010-09-10 | 2010-09-10 | Closed end blind hole cold extrusion forming die of energy accumulator shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201832860U true CN201832860U (en) | 2011-05-18 |
Family
ID=44002954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205304388U Expired - Lifetime CN201832860U (en) | 2010-09-10 | 2010-09-10 | Closed end blind hole cold extrusion forming die of energy accumulator shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201832860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814441A (en) * | 2012-08-09 | 2012-12-12 | 江苏森威集团飞达股份有限公司 | Cold forging method and cold extrusion mould |
| CN105855311A (en) * | 2016-04-27 | 2016-08-17 | 江苏威鹰机械有限公司 | Method for eliminating cold extrusion cracks of concave hexagram at bottom of shell of energy accumulator |
-
2010
- 2010-09-10 CN CN2010205304388U patent/CN201832860U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814441A (en) * | 2012-08-09 | 2012-12-12 | 江苏森威集团飞达股份有限公司 | Cold forging method and cold extrusion mould |
| CN102814441B (en) * | 2012-08-09 | 2015-05-20 | 江苏森威集团飞达股份有限公司 | Cold forging method and cold extrusion mould |
| CN105855311A (en) * | 2016-04-27 | 2016-08-17 | 江苏威鹰机械有限公司 | Method for eliminating cold extrusion cracks of concave hexagram at bottom of shell of energy accumulator |
| CN105855311B (en) * | 2016-04-27 | 2018-01-09 | 江苏威鹰机械有限公司 | A kind of method for eliminating the recessed Magen David cold-extruded cracking in energy accumulator housing bottom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
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| CX01 | Expiry of patent term |