CN1656320A

CN1656320A - Method for switching a hydraulic pressure intensifier

Info

Publication number: CN1656320A
Application number: CN 03812502
Authority: CN
Inventors: E·拉普
Original assignee: Tox Pressotechnik GmbH and Co KG
Current assignee: Tox Pressotechnik GmbH and Co KG
Priority date: 2002-05-31
Filing date: 2003-06-02
Publication date: 2005-08-17
Also published as: WO2003102428A1; DE10325043A1; AU2003245848A1

Abstract

The invention relates to a method for switching a machine tool from rapid travel to working travel and to a hydraulic pressure intensifier, especially for carrying out the inventive method. According to the invention, the machine tool is automatically switched from rapid travel to working travel when a defined counter-force occurs.

Description

The conversion method of hydraulic pressure multiplier

Background technique

The present invention relates to a kind of method of being changed to working stroke by rapid stroke in the toolroom machine, its type is as described in the independent claims.By being used in this method in toolroom machine and the hydraulic pressure multiplier, various dissimilar instruments are carried out control operation, as long as wherein must comprise a rapid stroke, instrument is advanced on the workpiece that need process as far as possible apace, finish the processing of instrument workpiece with after-applied high machining stress and with less relatively working stroke.

In addition, the invention still further relates to a kind of hydraulic pressure multiplier of implementing this method, especially as dependent claims 6 described types.In principle, for rapid stroke with wherein drive the needed low driving force of working piston, so long as hydraulic type is carried out, then one relatively low, affact the reservoir chamber's pressure on the working piston, perhaps a relatively low driving force is necessary, and it can produce by pneumatic, electronic or electromechanical mechanism.Importantly instrument can be finished this rapid stroke relatively apace, so that begin it self work.But the working stroke of following thereafter then only needs very short distance working force very high, with a very high action of hydraulic force on working piston.According to the present invention, rapid stroke and working stroke can be controlled fully independently of each other.According to claim 6, the advantage of structure of the present invention is, only needs the high pressure of working stroke to produce with hydraulic way, but it also can be as in other solution, obtains satisfactorily by other mechanism.In rapid stroke, in working space, what dominate is reservoir chamber's pressure.Certainly, reservoir chamber's pressure must be changed for entering working stroke in time to the conversion of high pressure, so that set up necessary working force from the adjusting power of working piston, that is, obtains the hydraulic type high pressure from hydraulic type reservoir chamber pressure.

Very natural, at working piston that needs are regulated and reach on the piston rod of work apparatus outside, no matter be in rapid stroke or in working stroke, all produce adjusting power.In order in the working room, to produce high pressure, must block the path that hydraulic fluid leads to the hyperbaric chamber certainly, wherein as top performed, rapid stroke also can realize by non-hydraulic mechanism.

In a kind of known toolroom machine, wherein have the hydraulic pressure multiplier of a type (DE-OS 3828699), between the reservoir chamber and working room of the hydraulic fluid of a lower pressure, the supply passage of an intercommunicating pore form is arranged.Wherein, in the time of need converting reservoir chamber's pressure to high pressure, the piston that slips into of pneumatic control heads in this passage, and thus two chambers is separated.This slips into piston and continues subsequently deeper to enter in the working room with its free termination, wherein because the cross section size differences, be less to slip into the piston cross section to bigger working piston cross section, in the working room, produce desired high pressure, be used for piston rod (DE-OS 3828699) with the corresponding work masterpiece by pressure multipier.There are various hydraulic pressure multipliers to work according to the method.A subject matter when using this apparatus is: the correct time point of transfer process relatively is difficult to regulate, and reason is to be conversion time to determine by the time point that slips into that slips into piston, and it depends on the access of pneumatic drive.In some cases, wish sometimes earlier conversion time, wish a little later again sometimes, although difference is very little.Its reason is instrument to be advanced on the workpiece always need some times, and in some cases, the rapid stroke in manufacture process is relatively short because of the cause aspect the workpiece configuration.In each concrete rapid stroke, also applying in the force-stroke sometimes, there are some difference, their need one to have the complex control system of measuring transmitter and control switch, and irrelevant with the driving mode of such control piston, no matter be pneumatic, hydraulic pressure or simply be power-actuated.This problem carries out just can occurring when high pressure is changed from reservoir chamber's pressure up to needs exactly, and is very complicated, and majority does not all obtain satisfied the solution.

Summary of the invention

Be used for method that toolroom machine is changed among the present invention, have the described feature of independent claims; And be used for implementing the hydraulic pressure multiplier of this method, have dependent claims 6 described features.Its advantage is: change and import the use of the high pressure of working force, betide the moment of its necessity exactly, just typically act on the piston rod and when having surpassed the reaction force of the adjusting power in the rapid stroke, realized the optimization of time thus for force-stroke will begin in a minute, occurred one.By the present invention, not only obtained the conversion and control automation, saved many supplementary equipment devices by it, as power transmitter, pneumatic control driver etc., also realized extraly instrument from rapid stroke advance, to the optimum Match of force-stroke, workpiece being processed thereafter.Although when finishing rapid stroke, piston rod is with the instrument striking work, and therefore produced reaction force, but show: by the present invention produce by the conversion of rapid stroke to force-stroke, compare softer with known utensil, because force-stroke must just begin before instrument arrives on the workpiece among the latter, so always to set up very high power, thereby cause powerful the collision.The present invention at first makes the mechanical friction on instrument and utensil weaken.In addition, an important advantage is: because simple structure, can be better, more simply quality and process are monitored, and promptly favourable to workpiece.In any case, conversion and concrete device independent, so it can be controlled by pneumatic, mechanical, hydraulic pressure and/or motor drive mechanism (valve, push rod, axle etc.).

Another important advantage is: when using pressure multipier of the present invention, reaction force and it are to regulating exceeding of power, allow to utilize other mechanism to change, and in the working room, introduce the pressure rising, on piston rod, act on the working force an of necessity afterwards by the latter by means of this method.Key is: as long as given reaction force surpassed the adjusting power that acts in the rapid stroke, the Lixing that has just finally begun to cause this working stroke is.

Relate to a dominance structure of this method in according to the present invention,, produce the stroke working force with working piston and service duct.Wherein, working piston is defined to be different hydraulic pressures and the border of the working room that designs, service duct can connect towards the working room, be the hydraulic fluid setting of low discharge pressure in the toolroom machine, working force is then after closing service duct, form by a high pressure that results from the working room and act on the hydraulic fluid on the working piston.Hydraulic characteristic makes that people can be with relatively low expense, by the high working force of above-mentioned pressure multipier generation.

Relevant therewith in according to a present invention dominance is constructed, and opens the high-pressure channel that leads to the working room by the service duct of closing.This conversion or conversion and control are preferably in the operation and finish, and wherein, the unlatching of high-pressure channel can realize by closing the high pressure that produces behind the service duct.

According to a structure with additional advantage of the present invention, the service duct that leads to the working room can be closed by control valve, when it closes to an end in rapid stroke, can get clogged because of a definite reaction force.Because reaction force, the removable valve element of control valve moves to closed position by open position and gets on.

According to a structure with other advantage of the present invention, rapid stroke and/or force-stroke can realize by the electromechanical equipment that influences adjusting power in addition.Such electromechanical equipment can be configured to various, as following also want as described in.It can manufacture spindle motor, magnetic motor or other consistent formula, and makes up by electric switch and transmitter and other controllable elements, as hydraulic pressure device, air-operated apparatus etc. and to control.This electromechanical equipment, as actuating motor, its advantage at first is its accurate and may command ability fast, this is particular importance in recloser.Especially can the workpiece of being produced be carried out better, simpler quality and process monitoring because easily the motor data that provides is controlled especially.

According to the structure that has the hydraulic pressure multiplier of advantage among the present invention who is mentioned as dependent claims 6, when reaction force transfinited, the service duct here also controlled valve was closed.Therefore control valve has also born the center function here.

A kind of dominance relevant therewith in according to the present invention is constructed, and the driving arrangement of conduct structure piston and piston rod etc. in rapid stroke is the reciprocating device of electromechanical at least.According to the present invention, it can be configured to miscellaneous.Showed already that power-actuated main shaft or mainshaft nut had peculiar advantage, they can be of all kindsly as the driving that moves back and forth.

A kind of structure that has other advantage in according to the present invention can produce high pressure by the pilot pressure piston by dynamo-electric mechanism.Under this mode, can all control rapid stroke and working stroke by dynamo-electric mechanism.Wherein, in rapid stroke, fill up hydraulic fluid, but be not to act in the rapid stroke at first, and in working stroke, the hydraulic pressure in the working room is converted to high pressure by dynamo-electric mechanism to the working room is additional.These will be realized by the pilot pressure piston certainly especially, the characteristic of the pressure multiplier of the hydraulic system of having been narrated above wherein having utilized.

Have a structure of advantage in according to the present invention in addition, such pressure piston has control flume on its cylinder, so it can be in its stroke moving process controls service duct as valve element movably.This control flume set up during the rapid stroke be in low-pressure state under the hydraulic pressure reservoir chamber between be communicated with, therefore after this connection is cut off, can set up high pressure by pressure piston.

Have a structure of other advantage in according to the present invention, the pressure chamber by pressure piston institute limited boundary controls by flow control valve.The pressure piston here also can manufacture fully and slip into piston, and flow control valve has pressure-dependent unlatching boundary on the direction of working room, at the valve that backwashes that then is configured to open wide on the direction of pressure chamber.Because this pressure-dependent unlatching boundary needs only the just lower power that acts on the pressure piston in rapid stroke, the hydraulic oil that then is positioned at the pressure chamber just plays the effect that oil blocks.In case and rapid stroke finishes, instrument has arrived on the workpiece, appearing at the reaction force that causes on the piston rod, thus will correspondingly raise.Along with the motor machine stroke mechanism continues operation, by pressure piston the hydraulic pressure in the pressure chamber is raise, till surpassing the cracking pressure of flow control valve.The unlatching boundary of flow control valve on working room's direction, the needed reaction force of the stroke of therefore having determined to start working.

Structure that special advantage is arranged in according to the present invention, dynamo-electric stroke mechanism is supported in enclosure, can moves against its stroke directions, therefore finish and corresponding to the continuation operation of dynamo-electric mechanism in rapid stroke, move by it, on the one hand working room and service duct are separated, can in the working room, produce a high pressure on the other hand for working stroke.The mode of advantage is: so movably motor is placed in the reservoir chamber by main shaft etc., so that reduce the cooling and the sealing problem of hydraulic machinery.

Structure of being correlated with therewith in according to the present invention with advantage, pressure in the reservoir chamber is determined by spring-loaded storage piston, this piston manufactures annular piston, controlled piston passes, and the latter drives by dynamo-electric mechanism, and as the removable valve element of control valve, wherein, control piston, is produced as and drives the necessary high pressure of stroke with in the pressure chamber that its free end face sinks to the working room is connected as pressure piston.

According to the present invention, this electromechanical drive mechanism also can realize by alternate manner fully, for example motor is placed in the casing outside or drives structure by moving back and forth, by being parallel to main shaft drives mechanism that piston rod settles etc., wherein, many above-mentioned features can be applied in new combination.

Other advantage of the present invention and the structure with advantage can obtain from the following description, legend and claim.

Description of drawings

In legend, provided four embodiments of the present invention, and below it has been elaborated.Be illustrated as:

Fig. 1 is the embodiment of single shaft;

Fig. 2 is the embodiment of second single shaft, has externally-arranged storage;

Fig. 3 be the apparatus of diaxon as the 3rd embodiment, have and be placed in outside motor, and

Fig. 4 is the 4th embodiment with three arranged parallel axles.

Embodiment

The hydraulic pressure multiplier that provides as first embodiment in Fig. 1 is the less apparatus of compact member mode.Wherein, can settle along longitudinal axis I by axially movable parts.In shell 1, settling to radial seal working piston 3, it is in the working room 2 of cylinder body type, can move axially.On this working piston 3, settling piston rod 4, have screw thread 5 on its free tail end and fix instrument, and from shell 1, stretch for controlling tool.Working piston 3 is guaranteed autorotation not to take place by the mechanism that does not provide.In addition, a side that deviates from piston rod 4 on working piston 3 is equipped with telescopic section 6, wherein rotates and is settling nut 7 relatedly, by it the central blind hole 8 in working piston 3, piston rod 4 and the section 6 is closed.

The threaded spindle 9 that turning round in nut 7, the latter is connecting with rotor 10 rotations of motor 11 again relatedly.The arrangement of this motor makes its coil winding 12 coaxial with nut 7 and threaded spindle 9.As long as motor 11 operation and main shaft 9 rotations that are connected with rotor 10 by nut 7, are moved to the left working piston 3 and piston rod 4, the power that resistance does not further provide here and finish rapid stroke.This rapid stroke moves the support of the hydraulic fluid that is subjected to being positioned at working room 2, and the latter is in this rapid stroke under a kind of lower storage pressure state.Guaranteed that like this, at least working room 2 is full of hydraulic fluid all the time.Can it be guided from reservoir chamber 13 by service duct 12 and come, and indoorly obtain to store pressure by annular piston 14 and helical spring 15 at this.Helical spring 15 at a side bearing that deviates from annular piston 14 on motor 11, wherein it to the latter along shown in the direction of position apply active force.

Annular piston 14 controlled pistons 16 therefrom pass, and the latter enters in the pressure chamber 17 of shell 1 with its free termination.The cylinder of this control piston 16 is provided with annular groove 18, it shown in the position on service duct 12 is communicated with reservoir chamber 13, and pass by after certain distance and annular groove 18 enter into pressure chamber 17 when control piston 16, this connection is interrupted.17 derive high-pressure channel 19 to service duct 12 from the pressure chamber, wherein, in this high-pressure channel 19, settling the flow control valve 20 that opens wide towards service duct, it is on the direction of service duct 19, as pressure valve 21, after in pressure chamber 17, reaching a minimum force value, just can open, and it plays the effect that oil circuit blocks before opening.In the opposite direction, up to the pressure chamber 17, this flow control valve 20 is formed in the valve 22 that backwashes that opens wide on this direction.In case control piston 16 is passed on pressure chamber's 17 directions, it at first just disconnects service duct 12 with

reservoir chamber

13, and 17 hydraulic fluids of carrying to service duct 12 through passage 19 enter into working room 2 from the pressure chamber by it thereby make.Control piston 16 areas are little and the working piston area is big, because the very large cross section contrast of this difference, having produced corresponding pressure in hydraulic fluid raises, therefore in working room 2, the working pressure that has produced multiplication now substitutes storage pressure before this, certainly it and act on adjusting power on the control piston 16.Here it is important radial seal device 23,24 on the control piston 16 and 25 quality.

The working method of the electric hydraulic pressure multipier shown in Fig. 1 is as follows: after connecting motor 11, by the threaded spindle 9 that is wherein driven working piston 3 is passed along the direction of arrow II and carried out rapid stroke, wherein, in service duct 12 flow into the working room 2 that self increases, and impel stroke to move from the hydraulic fluid of reservoir chamber 13.In case piston rod 4 collides workpiece with instrument, the rotor 10 of motor 11 continues rotation unchangeably, and main shaft 9 by rotation together and static nut 7 make motor 11 integral body move along arrow III together.At this moment, it drives control piston 16 and moves together, and the latter separates service duct 12 and storage 13 after the distance that has moved one section weak point.When motor 11 continued rotation, because of the continuation driving of threaded spindle 9 and because of the backpressure that acts on by workpiece on the piston rod 4, control piston continued to move along arrow 3 directions.Wherein,, in working room 2, produce a hydraulic pressure high pressure, therefore, make and carried out for the necessary working stroke of instrument now corresponding to area ratio by 16 pairs of working pistons 3 of control piston.Wherein, working piston 3 and piston rod 4 carry out force-stroke, though slower, very strong.In case working procedure finishes, motor 11 changes it and turns to and threaded spindle 9 reversion, on its initial position shown in will at first motor 11 being back into again.Wherein, because the function of backwashing of flow control valve 20, flow out, come back in the pressure chamber 17 in hydraulic fluid oil service duct and the high-pressure channel, and again will be between reservoir chamber 13 and the working room 2 be communicated with get up through high-pressure channel 12 by circular groove 18, and working piston 3 and piston rod 4 are sailed got back on its initial position subsequently, so that carry out next new working stroke.

Second embodiment shown in Figure 2 is similar to first embodiment's structure.Wherein, the member that function is identical also has same sign code name, just comes to distinguish with Fig. 1 by an apostrophe.An important function difference at first is that 13 ｀ of reservoir chamber are set at the storage 26 that is arranged in shell 1 ｀ outside, and the inner room 27 of therefore settling motor 11 ｀ is simultaneously as 2 ｀ of working room.Motor 11 ｀ are placed in shell 1 ｀ and can not move.Here, its rotor 10 ｀ are supported among shell 1 ｀, avoid moving axially by awl roller bearing 28.Carry part 29 etc. by the key axle, be rotated with threaded spindle 9 corresponding main shafts 30 by motor 11 ｀ driving.On its side, be mounted with screw drive 31, as roller screw drive (ROLLENGEWINDETRIEB) class away from motor 11 ｀.Wherein, being arranged at being threadedly engaged to of cylinder side is arranged on the internal thread 32 among blind hole 8 ｀ of piston rod 4 ｀.In case main shaft 30 is subjected to the respective drive of motor 11 ｀ and rotates, just piston rod 4 ｀ and working piston 3 ｀ are axially passed by screw drive 31, from shown in initial position, finish such as rapid stroke.Hydraulic fluid flows out from 22 ｀ of reservoir chamber and service duct 12 ｀ in this passing process, and 18 ｀ enter into inner room 27 through the control annular groove, and impel rapid stroke to carry out by the impact to working piston 3 ｀ that wherein produces.After piston rod 4 ｀ struck workpiece with instrument, its stroke was stopped, and motor 11 ｀ and main shaft 30 then continue rotation.Settling control annular groove 18 ｀ on control piston 16 ｀, it gets clogged because of the oil pressure that is present in 17 ｀ of pressure chamber again.This oil pressure, is overcome by control piston 16 present given drivings among first embodiment as figure, therefore is used to drive working piston 3 now by the hydraulic oil that is discharged among 17 ｀ of pressure chamber.But, its mode is that it is imported in the inner room 27, and this chamber still is 2 ｀ of working room simultaneously.Needed control realizes by flow control valve 20 ｀ and high-pressure channel 19 ｀.

In the 3rd embodiment shown in Figure 3, also carry out work with motor and storage.Wherein, with the corresponding member of other embodiment, it indicates in the code name two apostrophes.Two longitudinal axis IV and V are arranged.On one side, motor 11 ｀｀ and the 13 ｀｀ of reservoir chamber are positioned on the longitudinal axis IV, and it is parallel to longitudinal axis V, are then settling working piston 3 ｀｀ and piston rod 5 ｀｀ and control piston 16 ｀｀ above the latter.Here be a bigger aggregate, wherein the structure of parallel to an axis is favourable for the component volume of utensil.

Motor 11 ｀｀ and the 26`` of reservoir chamber are placed in the outside of shell 1 ｀｀.The 13 ｀｀ of reservoir chamber are connected with the 2 ｀｀ of working room by relatively short service duct 12 ｀｀, and the longer section of the inner room 27 ｀｀ of shell 1 ｀｀ by service duct 12 ｀｀ is connected, be controlled by control piston 16 ｀｀, here the latter is configured to immerse piston.In addition, the 17 ｀｀ of pressure chamber also are connected with this service duct 12 ｀｀, but also as among first embodiment, pass through high-pressure channel 19 ｀｀, are mounted with the flow control valve 20 ｀｀ of blocking-up oil circuit in the middle of the latter.

Be that with other embodiment's basic difference threaded spindle 9 ｀｀ rotate for driving in nut 7 ｀｀, be placed on the axis V, and drive by belt drives 33 etc.Wherein, belt drives 33 is rotated and is connected with axle 34 at its input side, ordered about by motor 11 ｀｀, and has and being rotatably connected of threaded spindle 9 ｀｀ at opposite side, and the latter rotates in nut 7 ｀｀.Carry out rapid stroke in case be rotated driving, will instrument be advanced to workpiece by nut 7 ｀｀, working piston 3 ｀｀ and piston rod 4 ｀｀ by motor 11 ｀｀, axle 34 ｀｀ and belt double thread main shaft 9 ｀｀.Motor 11 ｀｀ still continue rotation in case piston rod 4 ｀｀ are stopped, the belt drives 33 that then grasps solid is passed with control piston 16 ｀｀ on axle 34, afterwards, as in other embodiments, at first service duct 12 ｀｀ are by partial occlusion, can adjust required high pressure in the 17 ｀｀ of pressure chamber thus, it correspondingly is imported in the 2 ｀｀ of working room subsequently.The axle 34 with belt drives 33 between be rotatably connected and can realize by local toothization on the axle 34.

Provided the 4th embodiment in Fig. 4, wherein the movable member of utensil is placed on three parallel axles 6,7 and 8.In bigger embodiment, such structure can have peculiar advantage.This embodiment provides with the form of simplifying very much.Wherein, corresponding sign code name is in order to be different from other embodiment, with three apostrophes note in addition.Motor 11 ｀｀｀ live axles 34 ｀｀｀, it comes control piston bar 4 ｀｀｀ by the reciprocating stroke equipment of corresponding rotation driving 36 and driving so again.As the 2 ｀｀｀ of working room be the doughnut that is connected with the 13 ｀｀｀ of reservoir chamber, it has the controlling rod 38 that stretches to shell 1 ｀｀｀ outside, can be attached thereto to influence and moves back and forth by installing 39.Being communicated with between the 13 ｀｀｀ of reservoir chamber and the 2 ｀｀｀ of working room,, undertaken by the control annular groove 18 ｀｀｀ among the control piston 16 ｀｀｀ as in first embodiment.And it can produce needed high pressure in the 17 ｀｀｀ of pressure chamber, as in other embodiments.Flow control valve 20 ｀｀｀ finish needed flow control.Storage piston 14 ｀｀｀ here also bear from helical spring 15 ｀｀｀ applied forces.For this reason, control piston 16 ｀｀｀ are subjected to passing and produce high pressure by also being placed in stroke generator 40 on the VII.In case because of instrument has arrived the corresponding resistivity that occurs on the workpiece acting on the piston rod 4 ｀｀｀,, be delivered on the VII, promptly be delivered on the stroke generator 40 although then its demonstration is created on the VIII.In addition, this 4th embodiment's working principle also is after rapid stroke finishes, and respond a definite resistivity, especially produced when on instrument arrival workpiece time, and necessary high pressure is processed in generation, and carry out working stroke.

Specification, subsequently claim and legend in all features of providing, can either be individually, also can all belong to base region of the present invention through combination mutually arbitrarily.

The Reference numeral table

1 shell, 1 ｀, 1 ｀｀, 1 ｀｀｀

2 ｀ of 2 operating rooms, 2 ｀｀, 2 ｀｀｀

3 working pistons, 3 ｀, 3 ｀｀

4 piston rods, 4 ｀, 4 ｀｀, 4 ｀｀｀

5 screw threads

6 sections (bushing type)

7 nuts, 7 ｀｀

8 blind holes, 8 ｀

9 threaded spindle, 9 ｀｀

10 rotors

11 motors, 11 ｀, 11 ｀｀, 11 ｀｀｀

12 service ducts, 12 ｀, 12 ｀｀

13 ｀ of 13 reservoir chambers, 13 ｀｀｀, 13 ｀｀｀

14 annular pistons, 14 ｀｀｀

15 helical springs, 15 ｀｀｀

16 control pistons, 16 ｀, 16 ｀｀, 16 ｀｀｀

17 ｀ of 17 pressure chambers, 17 ｀｀, 17 ｀｀｀

18 control annular grooves, 18 ｀, 18 ｀｀

19 high-pressure channels, 19 ｀｀

20 flow control valves, 20 ｀｀, 20 ｀｀｀

21 pressure controlled valves

22 valves that backwash

23 radial seals

24 radial seal devices

25 radial seal devices

26 storagies, 26 ｀｀

27 inner rooms, 27 ｀｀

28 awl roller bearings

29 key axle carrier

30 main shafts

31 screw drive

32 internal threads

33

34 34 ｀｀｀

35 chisel teeths

36 rotations drive

37 stroke equipment

38 controlling rods

39 devices

40 stroke generators

Claims

1, a kind of toolroom machine is transformed into the method for working stroke by rapid stroke, has piston rod (4), it can be revolted restoring force and carry out axial adjustment, and outwards transmits consequent adjusting power, and is the device of working stroke generation working force,

It is characterized by:

In case the reaction force that acts on the piston rod (4) surpasses the definite numerical value of adjusting power that is produced, the device that produces working force is just started working.

2, the method for claim 1, working piston (3) with working room (2) limited boundary that different hydraulic pressures are provided with, with closable service duct (12), carry hydraulic fluid with low discharge pressure for the working room in the toolroom machine (2), it is characterized by: after closing service duct (12), working force is to form by the high pressure that results from the working room (2) and act on the hydraulic fluid on the working piston (3).

3, method as claimed in claim 2 is characterized by: along with closing of service duct (12), the high-pressure channel (19) that leads to working room (2) is opened.

4, as the described method of one of claim 1 to 3, it is characterized by: the service duct (12) that leads to working room (2) can pass through control valve (16,18) closes, and the latter can utilize definite reaction force to block.

5, as the described method of one of above-mentioned claim, it is characterized by: rapid stroke and/or force-stroke can realize by means of the electromechanical device that influences adjusting power extraly.

6, hydraulic pressure multiplier, especially in order to implement as method as described in one of claim 1 to 5,

-have a working piston (3) that is arranged in shell (1), for hydraulic type, can revolt a reaction force and drive, can be in the working room (2) of different pressures along moving axially,

-have the piston rod (4) or the similar component of working piston (3), be used for working piston (3), the power (rapid stroke power) and/or the power of working stroke of rapid stroke to be transmitted, the outside that reaches shell is gone,

-having the reservoir chamber (13) that is provided with for the hydraulic fluid that is in lower storage pressure state, it is connected with working room (2) by closable service duct (12),

-have control valve (16,18), in closable passage (12), and

-having pressure piston (control piston 16), it after closing between working room (2) and reservoir chamber (13), is that the necessary working force of working stroke produces a hydraulic pressure high pressure at service duct (12) in working room (2),

It is characterized by:

-in case act on reaction force on working piston (3) and/or the piston rod (4) and reach or surpassed existing rapid stroke power, service duct (12) just is closed,

-in shell (1), have (auxiliary) drive unit (electronic, pneumatic or hydraulic type), realize rapid stroke,

-drive unit (integral body) is revolted a reaction force that is produced and is worked, and

-surpassing under (enough) reaction forces of a determined value, service duct (12) gets clogged (oil blocks, and control valve 16 to 18 is closed) by drive unit,

-therefore in working room (2), produce a hydraulic type high pressure for working stroke.

7, hydraulic pressure multiplier as claimed in claim 6 is characterized by: service duct (12) is closed by control valve (16 to 18) because of the reaction force that exceeds.

8, as claim 6 or 7 described hydraulic pressure multipliers, it is characterized by: electrodynamic mechanical type stroke mechanism (6 to 11) is realized rapid stroke as the drive unit of working piston (3) and piston rod (4) etc.

9, hydraulic pressure multiplier as claimed in claim 8 is characterized by: can produce high pressure by pilot pressure piston (16) by electrodynamic mechanical type mechanism (6 to 11).

10, hydraulic pressure multiplier as claimed in claim 9 is characterized by: pressure piston (16) has control flume (18) on its cylinder, and controls service duct (12) as valve element movably when its stroke moves.

11, as the described hydraulic pressure multiplier of one of claim 6 to 10, it is characterized by: by the pressure chamber (17) of pressure piston (16) limited boundary, control by flow control valve (20), the latter has a pressure-dependent unlatching boundary on the direction of working room (20), be configured to the valve that backwashes that (17) are opened wide towards the pressure chamber on oppositely.

12, as the described hydraulic pressure multiplier of one of claim 8 to 11, it is characterized by: the electrodynamic mechanical type stroke mechanism supports movably against stroke directions in shell (1), therefore finish and electrodynamic mechanical type mechanism when correspondingly continuing to move in rapid stroke, passing by mechanism, on the one hand working room (2) and service duct (12) are separated, in working room (2), can be set up high pressure on the other hand for working stroke.

13, hydraulic pressure multiplier as claimed in claim 12, it is characterized by: the pressure in reservoir chamber (13) is determined by spring-loaded storage piston (annular piston 14), this controlled piston of storage piston (14) (16) passes, the latter drives by motor drive mechanism (7 to 11), and as the movable mechanism of control valve, wherein, control piston enters into the pressure chamber (17) that is connected with working room (2) as pressure piston (16) with its free end face, produces the needed high pressure of working stroke.