CN109737115A - A kind of high efficiency low vibration hydraulic cylinder of variable volume - Google Patents
A kind of high efficiency low vibration hydraulic cylinder of variable volume Download PDFInfo
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- CN109737115A CN109737115A CN201910041609.6A CN201910041609A CN109737115A CN 109737115 A CN109737115 A CN 109737115A CN 201910041609 A CN201910041609 A CN 201910041609A CN 109737115 A CN109737115 A CN 109737115A
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Abstract
The present invention relates to a kind of high efficiency low vibration hydraulic cylinders of variable volume, including cylinder body, oil cylinder volume adjusting means, inflow pipeline and adjustable limiting block, cylinder body top open part is equipped with adjustable limiting block, main piston rod is equipped in cylinder body, cylinder body top opening is stretched out on main piston rod top, inflow pipeline is connected with the oil inlet of cylinder body by connecting bolt, oil cylinder volume adjusting means include volume adjustment piston, Worm gear feed screw elevator and servo motor, servo motor is connected with the worm wheel screw rod lifting machine, volume adjustment piston is fixed at the top of lead screw, cylinder interior is protruded into across cylinder base opening, top is corresponding with main piston rod bottom.The present invention can be improved the working efficiency of hydraulic press machine, reduce hydraulic shock vibration, improves machining accuracy and improve the service life of press machine and mold.
Description
Technical field
The invention belongs to the technical field of hydraulic press machine, in particular to the high efficiency low vibration liquid of a kind of variable volume
Compressing cylinder.
Background technique
Hydraulic press machine is according to made of pascal's principle, is a kind of pressure using liquid to transmit energy with complete
At the equipment of various forming techniques.Hydraulic press machine since the advent of the world have developed rapidly, and obtain in the industrial production
It is widely applied, such as the forming of sheet stamping forming, profile extrusion, metal forging forming, roll bending alignment.Hydraulic cylinder is by liquid
Pressure energy is changed into the hydraulic actuator of mechanical energy, is one of most important components of hydraulic press machine.
The compressibility of hydraulic oil causes hydraulic press machine to will appear a series of problems, and press machine in use
Tonnage is bigger, and these problems are more obvious.For example, it is used for the hydraulic press machine of sheet-metal press working, and when punching will start, punching
It cannot carry out at once, but oil liquid caused by continuing fuel feeding to supplement because of oil pressure raising, oil liquid compression is insufficient, this is substantially reduced
Stamping production efficiency；At the end of punching press, since oil pressure strongly reduces, the compression energy abrupt release being stored in hydraulic oil,
Intense impact is generated, so as to cause judder and noise, not only aggravating working environment, but also seriously affect part forming precision
And the service life of hydraulic press and mold.
Summary of the invention
The high efficiency low vibration for providing a kind of variable volume it is an object of the invention to demand in view of the above technology is hydraulic
Oil cylinder, improve hydraulic press machine working efficiency, reduce hydraulic shock vibration, improve machining accuracy and improve press machine and
The service life of mold.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of high efficiency low vibration liquid of variable volume
Compressing cylinder, it is characterised in that: including cylinder body, oil cylinder volume adjusting means, inflow pipeline and adjustable limiting block, the cylinder body passes through
First connection bolt is connected with hydropress frame, and cylinder body top open part is equipped with the adjustable limiting block, is equipped with main work in cylinder body
The oil inlet of stopper rod, the main piston rod top stretching cylinder body top opening, the inflow pipeline and cylinder body passes through the second connection
Bolt is connected, and the oil cylinder volume adjusting means include volume adjustment piston, Worm gear feed screw elevator and servo motor, described to watch
It takes motor to be connected with the worm wheel screw rod lifting machine, the volume adjustment piston is fixed at the top of lead screw, is opened across cylinder base
Mouth protrudes into cylinder interior, and top is corresponding with main piston rod bottom.
According to the above scheme, between the volume adjustment piston and cylinder body, between main piston rod and cylinder body, adjustable limiting block with
Between cylinder body and between main piston rod and adjustable limiting block, it is provided with guidance tape and band.
The beneficial effects of the present invention are: providing a kind of high efficiency low vibration hydraulic cylinder of variable volume, thus it is possible to vary liquid
The volume of compressing cylinder reduces the volume of hydraulic oil in hydraulic cylinder in the press machine course of work, to realize: 1) reducing hydraulic oil
The decrement of oil liquid when oil pressure increases in cylinder, shortens the time of supplement oil liquid, improves working efficiency；2) it is stored up when reducing oil liquid compression
The compression energy deposited reduces because compression energy discharges bring impact vibration and noise suddenly, improves working environment, improves machining accuracy
And the service life of press machine and mold.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Fig. 2 a-2d is the state change of certain model 12000kN fine blanking press main hydraulic cylinder within a duty cycle
Figure.
Fig. 3 a-3d is state change of the hydraulic cylinder of one embodiment of the invention within a duty cycle.
Wherein: 1- hydropress frame；2- inflow pipeline；The connection bolt of 3- second；4- cylinder body；5- oil cylinder volume adjustment dress
It sets；5.1- volume adjustment piston；5.2- Worm gear feed screw elevator；5.3- servo motor；The connection bolt of 6- first；7- guidance tape；
8- band；9- adjustable limiting block；10- main piston rod.
Specific embodiment
Embodiment of the present invention is illustrated now in conjunction with attached drawing, the present invention is not limited to the following examples.
A kind of high efficiency low vibration hydraulic cylinder of variable volume, including cylinder body 4, oil cylinder volume adjusting means 5, oil inlet pipe
Road 2 and adjustable limiting block 9, cylinder body are connected by the first connection bolt 6 with hydropress frame 1, and cylinder body top open part is equipped with can
Adjust limited block, be equipped with main piston rod 10 in cylinder body, cylinder body top opening is stretched out on main piston rod top, inflow pipeline and cylinder body into
Hydraulic fluid port is connected by the second connection bolt 3, and oil cylinder volume adjusting means include volume adjustment piston 5.1, Worm gear feed screw elevator
5.2 and servo motor 5.3, servo motor is connected with worm wheel screw rod lifting machine, and volume adjustment piston is fixed at the top of lead screw, passes through
Cylinder base opening protrudes into cylinder interior, and top is corresponding with main piston rod bottom.
Between volume adjustment piston and cylinder body, between main piston and cylinder body, between adjustable limiting block and cylinder body and piston rod
Between adjustable limiting block, it is provided with guidance tape 7 and band 8, is respectively used to be oriented to and prevents hydraulic oil from revealing.
The working principle of oil cylinder volume adjusting means are as follows: Worm gear feed screw elevator is driven by servo motor, drives volume
Regulating piston moves up and down, and the intracorporal volume of cylinder is protruded into change volume adjustment piston, to change the practical appearance of hydraulic cylinder
Product.
Worm gear feed screw elevator has self-locking function, so that oil cylinder volume adjusting means can bear fine machine worked
The oil pressure generated in journey.
Inflow pipeline is used to provide hydraulic oil to cylinder body；Main piston rod can be arranged in cylinder body up or down, can be in oil
It moves up under pressure effect to realize fine or compound fine blanking technology；Cylinder body top can be arranged in adjustable limiting block up or down
Portion, the upper dead center position of main piston rod when for accurately controlling the work of fine machine.
The fine hydraulic press and certain model 12000kN fine hydraulic press for applying the embodiment of the present invention are respectively used to fine phase
Same 8mm plate passes through and calculates comparison further explanation beneficial effects of the present invention.
Fig. 2 a-2d show state change of the cylinder body of certain model 12000kN fine hydraulic press within a fine period.
Fig. 2 a show the beginning in a fine period, and main piston rod is in technique stroke lowest point, although main piston rod is most
Big stroke up to 300mm (touching cylinder base position to upper dead center position from main piston rod), but in order to reduce the fine period,
Improve production efficiency, under this technique the actual range of main piston rod be only 50mm (i.e. from technique stroke lowest point to
Upper dead center position)；Fig. 2 b show the position that punching will start, and hydraulic oil volume is V in cylinder body at this time1=34.95L, into
Hydraulic oil volume is V in pipelinep=6.55L, the compression stiffness of hydraulic oil are βe=1400MPa, oil pressure increase Δ P=20MPa and draw
Rise hydraulic oil volume compression amount beThe flow of hydraulic oil is Q=1.8L/s when punching, then
Time needed for makeup oil liquid volume compression isFig. 2 c show the position that punching terminates, at this point, cylinder
Oil pressure sharply declines in body and oil pipe, and the compression energy of abrupt release isFig. 2 d is one
After a fine end cycle, main piston rod is returned to technique stroke lowest point, prepares to start next fine period.
Fig. 3 a-3d show state change of the embodiment of the present invention within a fine period.Fig. 3 a show one
The beginning in fine period, main piston rod is in technique stroke lowest point, and volume adjustment piston is in servo motor and worm gear
It is protruded into hydraulic cylinder under the adjustment effect of screw rod, until minimizing the volume of cylinder body with main piston rod following table face contact；
Fig. 3 b show the position that punching will start, and the volume of hydraulic oil is V in cylinder body at this time2=19.45L, oil pressure raising cause
Hydraulic oil volume compression amount beIt is the time required to supplement volume compressionFig. 3 c show the position that punching terminates, at this point, because the compression energy of oil pressure decline release isAfter Fig. 3 d is a fine end cycle, main piston rod is returned to technique stroke
Lowest point prepares to start next fine period.
By being analyzed above it is found that fine hydraulic press and the fine of certain model 12000kN using the embodiment of the present invention are hydraulic
Machine is compared, punching when cylinder body volume reduce 44.349%, and thus achieve it is following the utility model has the advantages that 1) punching will
When beginning, reduce 0.12s the time required to hydraulic oil volume compression caused by supplement is increased because of oil pressure, i.e., each fine period institute
Taking time reduces 0.12s, it is assumed that model 12000kN fine hydraulic press produces 30 parts per minute, and work 10 is small daily
When can produce 18000 parts, then work daily 10 hours using the fine hydraulic press of the embodiment of the present invention and can produce 1150 more
A part, efficiency improve 6.4%；2) at the end of punching, because the compression energy of oil pressure decline abrupt release reduces 25.6%,
To substantially reduce therefore bring impact vibration and noise, improve working environment, improve machining accuracy and press machine and
The service life of mold.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (2)
1. a kind of high efficiency low vibration hydraulic cylinder of variable volume, it is characterised in that: filled including cylinder body, oil cylinder volume adjustment
It sets, inflow pipeline and adjustable limiting block, the cylinder body are connected by the first connection bolt with hydropress frame, cylinder body top opening
Place is equipped with the adjustable limiting block, main piston rod is equipped in cylinder body, cylinder body top opening is stretched out on the main piston rod top, described
Inflow pipeline is connected with the oil inlet of cylinder body by the second connection bolt, and the oil cylinder volume adjusting means include that volume adjustment is living
Plug, Worm gear feed screw elevator and servo motor, the servo motor are connected with the worm wheel screw rod lifting machine, the volume adjustment
Piston is fixed at the top of lead screw, protrudes into cylinder interior across cylinder base opening, top is corresponding with main piston rod bottom.
2. a kind of high efficiency low vibration hydraulic cylinder of variable volume according to claim 1, it is characterised in that: the appearance
Between product regulating piston and cylinder body, between main piston rod and cylinder body, between adjustable limiting block and cylinder body and main piston rod with it is adjustable
Between limited block, it is provided with guidance tape and band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041609.6A CN109737115A (en) | 2019-01-16 | 2019-01-16 | A kind of high efficiency low vibration hydraulic cylinder of variable volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041609.6A CN109737115A (en) | 2019-01-16 | 2019-01-16 | A kind of high efficiency low vibration hydraulic cylinder of variable volume |
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| CN109737115A true CN109737115A (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910041609.6A Pending CN109737115A (en) | 2019-01-16 | 2019-01-16 | A kind of high efficiency low vibration hydraulic cylinder of variable volume |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953212A (en) * | 2019-12-11 | 2020-04-03 | 常州大学 | High-frequency sound vibration servo hydraulic cylinder |
| CN113653703A (en) * | 2021-07-05 | 2021-11-16 | 顾忙忙 | Multistage hydraulic cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58142072A (en) * | 1982-02-15 | 1983-08-23 | Hitachi Ltd | Air cylinder |
| CN201065833Y (en) * | 2007-06-29 | 2008-05-28 | 上海汉钟精机股份有限公司 | Compressor capacity regulating structure oil cylinder |
| CN201209604Y (en) * | 2008-05-16 | 2009-03-18 | 北京吉信气弹簧制品有限公司 | Support bar air spring with adjustable volume structure and force value compensation |
| CN201344158Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Multifunctional combined oil cylinder for steel plate preflexing machine |
| CN202646221U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Large aperture hydraulic cylinder |
| CN103697014A (en) * | 2013-12-17 | 2014-04-02 | 马钢(集团)控股有限公司 | Demolding cylinder of wheel oil press |
| CN204820423U (en) * | 2015-07-28 | 2015-12-02 | 湖州机床厂有限公司 | Hydraulic press top dead center adjusting device |
-
2019
- 2019-01-16 CN CN201910041609.6A patent/CN109737115A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58142072A (en) * | 1982-02-15 | 1983-08-23 | Hitachi Ltd | Air cylinder |
| CN201065833Y (en) * | 2007-06-29 | 2008-05-28 | 上海汉钟精机股份有限公司 | Compressor capacity regulating structure oil cylinder |
| CN201209604Y (en) * | 2008-05-16 | 2009-03-18 | 北京吉信气弹簧制品有限公司 | Support bar air spring with adjustable volume structure and force value compensation |
| CN201344158Y (en) * | 2008-12-14 | 2009-11-11 | 天水锻压机床有限公司 | Multifunctional combined oil cylinder for steel plate preflexing machine |
| CN202646221U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Large aperture hydraulic cylinder |
| CN103697014A (en) * | 2013-12-17 | 2014-04-02 | 马钢(集团)控股有限公司 | Demolding cylinder of wheel oil press |
| CN204820423U (en) * | 2015-07-28 | 2015-12-02 | 湖州机床厂有限公司 | Hydraulic press top dead center adjusting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953212A (en) * | 2019-12-11 | 2020-04-03 | 常州大学 | High-frequency sound vibration servo hydraulic cylinder |
| CN113653703A (en) * | 2021-07-05 | 2021-11-16 | 顾忙忙 | Multistage hydraulic cylinder |
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Application publication date: 20190510 |