CN1108918C - A planger-type hexagonal upward hydraulic press and method for measuring and controlling shift of upward hammer - Google Patents
A planger-type hexagonal upward hydraulic press and method for measuring and controlling shift of upward hammer Download PDFInfo
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- CN1108918C CN1108918C CN99126368A CN99126368A CN1108918C CN 1108918 C CN1108918 C CN 1108918C CN 99126368 A CN99126368 A CN 99126368A CN 99126368 A CN99126368 A CN 99126368A CN 1108918 C CN1108918 C CN 1108918C
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Abstract
The present invention relates to a plunger type hexahedral anvil hydraulic machine and a method thereof for monitoring the displacement of anvil hammers. An operating oil cylinder assembly of the hydraulic machine adopts a structure composed of a plunger type oil cylinder and a piston type oil cylinder which are connected in series, and an inner hole of a hinge beam is used for replacing a cylinder tube of each oil cylinder. The present invention has the advantages of material saving and low manufacture cost. A measurement device, a display and a control device for the displacement of the anvil hammers are arranged on the piston type oil cylinder, and the synchronization errors of the anvil hammers are displayed on the display after being processed by a microcomputer, so the adjustment is simple, the alignment performance of the anvil hammers is good, the synchronous accuracy is high, and the displacement situation of each anvil hammer can be measured, displayed and controlled at any time. When anvil hammer offside occurs, the present invention gives an alarm in time, so blasting accidents caused by the anvil hammer offside are avoided.
Description
Technical field
The present invention relates to produce in a kind of diamond industry the special equipment of superhard material and the method for observing and controlling top hammer displacement thereof, especially a kind of situation that adopts the plunger type cubic hydraulic press that ram cylinder and ram cylinder be in series and can measure, show, control top hammer displacement at any time automatically, and the method for observing and controlling top hammer displacement.
Background technology
At present, the structure of known cubic hydraulic press is that formations such as hinge beam, ram cylinder, base are arranged, and has following shortcoming and defect through facts have proved known cubic hydraulic press:
1, owing to the synchronous starting point of top hammer is controlled with limit switch, its positive stop is fixed on the more piece link rod, therefore rigidity is relatively poor, repeatable accuracy is low, so top hammer poor to neutrality, synchronization accuracy is low, and can not measure, show, control the situation that displacement is hammered on each top into shape at any time, normal appearance is because of the offside accident of blowing out that causes of top hammer.
2, owing to adopt ram cylinder, so the precision of cylinder barrel endoporus, fineness are had relatively high expectations, difficulty of processing is big, expense is high, and the assembling link is many, and accumulated error is big, and coaxial precision is low.
3, owing to adopt ram cylinder,, be decided by the internal diameter of cylinder barrel so under the identical situation of working fluid pressure, act on the power of top hammer.But, the internal diameter of six cylinder barrels want to accomplish size in full accord be very difficult, cylinder barrel also will produce strain under the effect of super-pressure working solution in addition, the internal diameter of cylinder barrel increases.Therefore, six top hammers are also just not exclusively the same to the size of pyrophillite combination block active force, and this is very disadvantageous to synthesis technique, is easy to cause the accident of blowing out.
4, owing to the employing ram cylinder, and be provided with cylinder barrel, and the cylinder barrel wall thickness dimension is bigger, in the endoporus of the hinge beam of packing into again, has therefore strengthened the appearance and size of equipment, limited the development of large-tonnage cubic hydraulic press.Greater than 4800 tons cubic hydraulic press, because of its operating distance is big, it is very inconvenient to operate at present.
5, owing to adopt ram cylinder, the pressure that improves working solution commonly used at present increases the tonnage of press, but facts have proved when working fluid pressure during greater than 100MPa, hydraulic pressure accident showed increased, production efficiency reduces, running expense increases, so increase the tonnage of press with the pressure that improves working solution, also has the not solution of many difficult problems at present.
6, the easy accident of blowing out of prior art cubic hydraulic press, in case the accident of blowing out, adjustment resets very numerous and diverse, waste time and energy, so production efficiency is lower the cost height.
7, prior art cubic hydraulic press, because the press tonnage is limit, single machine yield is lower.
8, prior art cubic hydraulic press because complex structure, the assembling link many, so the required precision height of cylinder barrel, the material expensive of use are device fabrication expense height.
Summary of the invention
The method that the purpose of this invention is to provide the hammer displacement of a kind of plunger type cubic hydraulic press and observing and controlling thereof top, it is not only rational in infrastructure, be easy to process and assemble, manufacturing expense is low, and debug simple, easy for operation, single machine yield is high, can also measure, show, control the situation of top hammer displacement at any time automatically, top hammer good to neutrality, synchronization accuracy is high, can in time report to the police when the top hammer is offside, has reduced the accident of blowing out, the production efficiency height, operating cost is low.
The object of the present invention is achieved like this: this plunger type cubic hydraulic press comprises with 12 bearing pins six groups of operating cylinder assemblies is connected into the almost spherical structure, and be loaded on the base, the operating cylinder assembly is that ram cylinder is connected in series with ram cylinder, plunger and piston fuse, the endoporus of hinge beam is as the plunger cylinder cylinder barrel, fix a backhaul cylinder barrel, i.e. ram cylinder cylinder barrel in hinge beam back; Displacement measurement, display unit are housed, the control device of control displacement on ram cylinder.
The method of described plunger type cubic hydraulic press observing and controlling top hammer displacement, the displacement of cubic hydraulic press top hammer is by the displacement transducer collection, import microcomputer behind this displacement signal input digit displacement meter, data are after MICROCOMPUTER PROCESSING, difference input display, each power amplifier, signal is controlled magnetic valve respectively after amplifying, and described top hammer displacement detecting and controlling comprises:
(1) observing and controlling of location benchmark: with three top hammers 7 in six top hammers
z, 7
x, 7
hLast plane as the location benchmark, i.e. top hammer 7 during feeding
z, 7
x, 7
hLast plane be 1/2nd of the pyrophillite combination block regular cube length of side to the distance of initial point, this distance can and be adjusted mother and regulate by mobile adjusting pad;
(2) observing and controlling of starting point pressurization synchronously: refuel by microcomputer control, plunger is travelled forward, make that going up the plane for 6 all arrives the St value,
St=L ÷ 2-δ wherein, L is the pyrophillite combination block length of side in the formula, δ is a pre compressed magnitude,
The δ value is between 0.2-0.5mm;
(3) the high pressure observing and controlling of pressurizeing synchronously: the control synchronous error is ± 0.15mm in pressurization,
Tx＝(|S1|+|S2|+|S3|+|S4|+|S5|+|S6|)÷6-|Sx|
In the formula:
Tx: sometime, the synchronous error on plane on each,
Sx: a certain distance that goes up the plane to initial point,
S1, S2, S3, S4, S5, S6 are respectively six distances that go up the plane to initial point;
(4) super-pressure is communicated with pressurization observing and controlling;
(5) pressurize observing and controlling.
Under the effect of plunger, when travelling forward, also drive piston rod, piston and positioning linkage rod and travel forward at hydraulic oil.Otherwise when moving backward under the effect of piston at hydraulic oil, piston is by piston rod pulling plunger also motion backward.At the volley, be contained in the ruler of top hammer displacement measurement on the positioning linkage rod, demonstration and displacement transducer also with piston rod movement, and measure, show, control the situation that displacement is hammered on the top into shape at any time.
Owing to adopt such scheme, the sharp prior art of the present invention has been compared following advantage and good effect:
1, since the synchronous error of top hammer by vernier, ruler and displacement sensor, demonstration, control, so good rigidly, adjustment is simple, repeatable accuracy is high, so top hammer good to neutrality, synchronization accuracy is high, and can measure, show, control each at any time and push up the situation of hammering displacement into shape, when appearance top hammer is offside, can in time report to the police, avoid causing the accident of blowing out.
2, owing to adopt ram cylinder, so that cylinder barrel endoporus precision, fineness require is lower, processing is simple, expense is low.
3, the endoporus of hinge beam replaces cylinder tube to use, and simplifies the structure, and reduced the assembling link, so accumulated error is little, coaxial precision height.
4, owing to adopt ram cylinder, so under the identical situation of working fluid pressure, act on the power of top hammer, be decided by the external diameter of plunger, the external diameter of six plungers want to accomplish big or small consistent be not difficult, the strain that cylinder barrel is produced under the effect of super-pressure working solution, to acting on the not influence of power of pushing up hammer, therefore, six are pushed up the size of hammering into shape pyrophillite combination block active force and are more or less the same, this is very favourable to synthesis technique, has reduced the accident of blowing out.
5, owing to adopt ram cylinder, the endoporus of hinge beam replaces cylinder tube to use again, has therefore reduced the appearance and size of equipment, has created condition for making the large-tonnage cubic hydraulic press.
6, owing to adopt ram cylinder, the endoporus of hinge beam replaces cylinder tube to use again, therefore can adopt the reduction working fluid pressure, and the way that increases diameter of plunger increases the tonnage of cubic hydraulic press.Facts have proved that when working fluid pressure is lower than 100MPa the hydraulic pressure accident obviously reduces, the production efficiency height, running expense is low, so the present invention becomes pratical and feasible for the tonnage that adopts the way that increases diameter of plunger to increase press.The present invention can make the press tonnage be enhanced about more than once.
7, the present invention is owing to be equipped with top hammer displacement measurement, demonstration, control device, so the rare accident of blowing out, in case the accident of blowing out, adjustment resets very simple, time saving and energy saving, so the production efficiency height, and operating cost is low.Single machine yield can improve more than 3 times.
8, the present invention because rational in infrastructure, materials are few, process and assemble is simple, debugging is convenient, so processing charges is few, the device fabrication expense is low.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 be the embodiment of the invention partly cut open structural map.
Fig. 2 is that rotation diagram amplifies in K1 portion among Fig. 1.(profilograph of a group oil cylinder assembly)
Fig. 3 is a K2 portion enlarged drawing among Fig. 2.
Fig. 4 be among Fig. 3 C to view.
Fig. 5 be among Fig. 3 D to enlarged drawing.
Fig. 6 is a pyrophillite combination block location schematic diagram, front view.
Fig. 7 is a pyrophillite combination block location schematic diagram, top view.
Fig. 8 is the electric control system calcspar of the embodiment of the invention.
Fig. 9 is the hydraulic scheme of the embodiment of the invention.
a. b. q. h. Gz. Gy. Gq. Gh. Gs. Gx. 1. 2. 3. 4. 5. 6 7. 8.9. 10. 11. 12. 13. 14. 15. 16. 17 18. 19. 20.21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31.32s. ( ) 32x. ( ) 32z. ( ) 32y. ( ) 32q. ( ) 32h. ( ) 33. ( ) 34. ( 、 ) 35. 36. 37. 7z. 7x.7h. Yk. 18s. ( ) 18x. ( ) 18z. ( ) 18y. ( ) 18q. ( ) 18h. ( )
In the embodiment shown in fig. 1, bearing pin 2 connects into the almost spherical structure with six groups of identical hydraulic cylinder assembly Gs, Gx, z, Gy, Gq and Gh, and be fixed on the base 1, the axis of six group oil cylinder assemblies forms a three-dimensional coordinate system, when hydraulic oil enters ante-chamber q through preceding oil-in a, when moving side by side plunger 4 travelled forward, six plungers 4 were respectively to the origin of coordinates (the formed three-dimensional coordinate system initial point of the axis of six group oil cylinder assemblies, be called for short initial point, down together.) exert pressure, form the pressurization form of cubic apparatus.
In Fig. 2, plunger 4, piston rod 5, small cushion block 6, top hammer 7, sheath 8, big cushion block 9 are fixed together, and are loaded in the endoporus of hinge beam 3, and when oil-in a entered ante-chamber q and promoted plunger 4 hydraulic oil the past, plunger 4 was to the previous crops axially-movable.At this moment, piston rod 5 drives piston 11, positioning linkage rod 16 is also done axially-movable in the same way.
In Fig. 3, Fig. 4, piston rod 5, piston 11, big round nut 13, positioning linkage rod 16, roundlet nut 17 and displacement transducer 19 are fixed together, and an end of positioning linkage rod 16 is fixedlyed connected with piston rod 5, and the other end and the axis of guide 20 are slidingly connected.Backhaul cylinder barrel 12, adjusting pad 14, adjustment female 15 and the axis of guide 20 are fixed together, and are fixed on (referring to Fig. 2) on the hinge beam 3 by platen 10 again.When hydraulic oil through after oil-in b when entering back cavity h and promoting piston 11, piston 11 drives piston rods 5, positioning linkage rod 16 and displacement transducer 19 and does axially-movable backward.Simultaneously, positioning linkage rod 16 is in axial sliding on the axis of guide 20, but can not have circumference to rotate, and plays the circumferential registration effect, and piston 11 is done axially-movable in the same way by piston rod 5 pulling plungers 4, can not have circumference to rotate.One end of signal cable 18 is connected with displacement transducer 19, and the other end is connected (referring to Fig. 8) with digital displacement meter, 25.
In Fig. 5, displacement transducer 19, ruler 22 are fixed on the positioning linkage rod 16.Vernier 21, the axis of guide 20 are fixed together with backhaul cylinder barrel 12.Adjusting screw 24 is fixed on the platen 10.The measuring staff 23 of displacement transducer 19 can also withstand on the plane of adjusting screw 24 by axial stretching all the time.When positioning linkage rod 16 under the drive of piston rod 5 axially-movable takes place (referring to Fig. 3), ruler 22 is subjected to displacement with respect to vernier 21, and its displacement shows on the rule of ruler 22 and vernier 21.The displacement signal that simultaneous displacement sensor 19 collects is through signal cable 18 input digit displacement meters 25 (referring to Fig. 8).
Fig. 6, Fig. 7 are pyrophillite combination block location schematic diagrames, left side top hammer 7z among the figure, top hammer 7x and top, back hammer 7h are loaded on left hydraulic cylinder assembly Gz respectively down, hydraulic cylinder assembly Gx and back hydraulic cylinder assembly Gh go up (referring to Fig. 1) down, last plane (the square planar that the top hammer contacts with the pyrophillite combination block of top hammer 7z, 7x commonly used and 7h, plane on the abbreviation, down together.) relative position (claim location benchmark) pyrophillite combination block Yk is carried out the feeding location.
Fig. 8 is the electric control system calcspar of the embodiment of the invention, go up signal cable 18s among the figure, following signal cable 18x, left signal cable 18z, right signal cable 18y, front signal cable 18q is connected with six displacement transducers 19 respectively with back its front end of signal cable 18h, the other end is connected with digital displacement meter 25, digital displacement meter 25 converts the displacement signal (signal of telecommunication) of displacement transducer 19 inputs to digital code (displacement data) back input microcomputer 26, data are after microcomputer 26 is handled, difference input display 27 and power amplifier terminal plate 28, power amplifier terminal plate 28 connects each power amplifier 29 respectively, and power amplifier 29 is controlled solenoid directional control valve 32s respectively after on request signal being amplified, 32x, 32z, 32y, 32q, 32h, 33,34 and the opening or closing of warning electric bell 30 circuit.
Fig. 9 is the hydraulic scheme of the embodiment of the invention, and its operation principle is as follows:
Behind the pump start.
1, original state:
Among the figure during each solenoid directional control valve no power, communicating valve 37 lower ends through solenoid directional control valve 34 and high pressure (below the 32MPa, down with.) oil circuit is connected, so communicating valve 37 is in closed condition under the effect of hydraulic oil; The plunger small end of booster 35 is connected with high-pressure oil passage through check valve 36 solenoid directional control valves 34, is in reset mode under the effect of hydraulic oil; The ante-chamber q of six group oil cylinder assemblies is sealed by hydraulic control one-way valve 31, communicating valve 37 respectively; Back cavity h through after oil-in b, solenoid directional control valve 33 connect with fuel tank.
2, SBR:
Make solenoid directional control valve 33 energising commutations, hydraulic control one-way valve 31 is opened under the effect of hydraulic oil, six ante-chamber q are respectively through preceding oil-in a, hydraulic control one-way valve 31 and solenoid directional control valve 32s, 32x, 32z, 32y, 32q, 32h and fuel tank are connected, hydraulic oil is through solenoid directional control valve 33, back oil-in b enters back cavity h, piston 11 spurs plunger 4 grades and moves backward under the effect of hydraulic oil, by the time 7z is hammered on the top into shape, the last plane that the last plane of 7x and 7h arrives position location and other three top hammers arrives when initial point ultimate range, make solenoid directional control valve 33 power-off restorations, plunger 4 stop motions, whole system are in the SBR (referring to location benchmark introduction) before the work.
3, starting point pressurization synchronously:
Behind the pyrophillite combination block Yk feeding location, start working procedure, microcomputer sends instruction, make solenoid directional control valve 32s32x, 32z, 32y, 32q, the 32h commutation of switching on simultaneously, hydraulic oil is respectively through solenoid directional control valve 32s 32x, 32z, 32y, 32q, 32h and hydraulic control one-way valve 31, preceding oil-in a enters ante-chamber q promotion plunger 4 and travels forward, the displacement signal that while six displacement transducers 19 measure is transferred to microcomputer and handles, when plane on certain when the distance of initial point equals St (seeing synchronous starting point introduction), microcomputer sends instruction, make corresponding solenoid directional control valve power-off restoration, should go up the plane stop motion, by the time go up the plane when the distance of initial point all equals St for six, system finishes synchronous starting point pressurization, microcomputer sends instruction, make solenoid directional control valve 32s 32x again, 32z, 32y, 32q, the 32h commutation of switching on simultaneously enters the synchronous pressure period of high pressure.
4, high pressure pressurizes synchronously:
After starting point pressurization is synchronously finished, go up the plane when the distance of initial point all equals St for six, when promptly six last planes are on same " starting line ", microcomputer sends instruction, make solenoid directional control valve 32s32x, 32z, 32y, 32q, the 32h commutation of switching on simultaneously, hydraulic oil is respectively through solenoid directional control valve 32s) 32x, 32z, 32y, 32q, 32h and hydraulic control one-way valve 31, preceding oil-in a enters the moving plunger 4 of ante-chamber q row and travels forward, the displacement signal that while six displacement transducers 19 measure is transferred to microcomputer and handles, carrying out high pressure under microcomputer control pressurizes synchronously and (sees synchronization accuracy, offside warning introduction), the pressure of high-pressure oil passage progressively raises simultaneously, when pressure is elevated to high pressure and pressurizes setting value (determining according to technological requirement) synchronously, microcomputer sends instruction, enter super-pressure (more than the 32MPa, down together.) the connection pressure period.
5, super-pressure is communicated with pressurization:
In the synchronous pressure process of high pressure, when the pressure of high-pressure oil passage is elevated to high pressure and pressurizes setting value synchronously, microcomputer sends instruction, make solenoid directional control valve 32s 32x, 32z, 32y, 32q, 32h power-off restoration, with seasonal solenoid directional control valve 34 energising commutations, hydraulic oil one tunnel enters the upper end of communicating valve 37 through solenoid directional control valve 34, and the spool commutation that promotes communicating valve 37 is communicated with six ante-chamber q; Another road enters the big end of plunger of booster 35 through solenoid directional control valve 34, the big end of plunger that promotes booster 35 carries out supercharging, the super-pressure fluid that the plunger small end of booster 35 produces enters six ante-chamber q promotion plungers 4 respectively through communicating valve 37 and enters the super-pressure pressure period, the pressure of super-pressure oil circuit progressively raises simultaneously, when being raised to dwell pressure (setting in advance), change the super-pressure packing stage over to according to synthesis technique.The super-pressure pressurize divides pressurize of super-pressure topping up and the pressurize of super-pressure level pressure again, can select for use as required.
6, super-pressure topping up pressurize:
In the super-pressure pressure period, the pressure of super-pressure oil circuit is progressively raising, when being raised to dwell pressure, microcomputer sends instruction, make solenoid directional control valve 34 power-off restorations, this moment, hydraulic oil one tunnel entered the lower end of communicating valve 37 through solenoid directional control valve 34, and the spool commutation that promotes communicating valve 37 is sealed six ante-chamber q respectively; Another road enters the plunger small end of booster 35 through solenoid directional control valve 34, check valve 36, and the plunger small end that promotes booster 35 resets it, and six ante-chamber q enter the sealing packing stage.Because the needs of synthesis technique, the pressure of ante-chamber q (dwell pressure) require to keep time enough, so that growth of diamond.But owing to leak, the pressure of ante-chamber q will descend (being commonly called as pressure), (set in advance when dropping to a certain numerical value, generally be not less than dwell pressure 99%) time, microcomputer sends instruction, make solenoid directional control valve 34 energising commutation, hydraulic oil one tunnel enters the upper end of communicating valve 37 through solenoid directional control valve 34, promotes the spool commutation six ante-chamber q are communicated with; Another road enters the big end of plunger of booster 35, the big end of plunger that promotes booster 35 carries out supercharging, the super-pressure fluid that the plunger small end of booster 35 produces enters six ante-chamber q respectively through communicating valve 37 and carries out the topping up ftercompction, pressure begins progressively to raise, when being raised to dwell pressure, microcomputer sends instruction, makes solenoid directional control valve 34 power-off restorations, six ante-chamber q seal respectively, and another changes the sealing packing stage over to.According to leakage situation, but the ftercompction of a packing stage topping up repeatedly.
After packing stage reaches the scheduled time, microcomputer sends instruction, make solenoid directional control valve 34 power-off restorations, solenoid directional control valve 33 energising commutations, hydraulic control one-way valve 31 is opened, six ante-chamber q are respectively through preceding oil-in a, hydraulic control one-way valve 31 and solenoid directional control valve 32s, 32x, 32z, 32y, 32q, 32h and fuel tank are connected, hydraulic oil is through solenoid directional control valve 33, back oil-in b enters six back cavity h respectively, piston 11 spurs plunger 4 and moves backward under the effect of hydraulic oil, by the time 7z is hammered on the top into shape, the last plane of 7x and 7h arrives the last plane of position location and other three top hammers when the distance of initial point is maximum, microcomputer sends instruction, make solenoid directional control valve 33 power-off restorations, the stop motion of last plane.Take out the pyrophillite combination block of using, put into new pyrophillite combination block, start working procedure, carry out next working cycles again.
7, super-pressure level pressure pressurize:
The pressurize of super-pressure level pressure is the pressure ratio according to dwell pressure and booster 35, in advance the pressure of high-pressure oil passage is transferred to corresponding pressure (high-pressure oil passage maximum pressure), when the pressure of super-pressure oil circuit progressively is elevated to dwell pressure, the plunger of booster 35 is in the hydro-cushion state, the pressure of super-pressure oil circuit no longer raises, and promptly changes the level pressure packing stage over to.
After super-pressure level pressure packing stage reaches the scheduled time, microcomputer sends instruction, make solenoid directional control valve 34 power-off restorations, with seasonal solenoid directional control valve 33 energising commutations, hydraulic oil is through solenoid directional control valve 33, back oil-in b enters six back cavity h respectively, piston 11 spurs plunger 4 and moves backward under the effect of hydraulic oil, by the time 7z is hammered on the top into shape, the last plane of 7x and 7h arrives the last plane of position location and other three top hammers when the distance of initial point is maximum, microcomputer sends instruction, make solenoid directional control valve 33 power-off restorations, the stop motion of last plane finishes a last working cycles, and system is in the SBR before the work again.
Displacement measurement shows before use, at first " zero " is marked on last plane and is handled, and when the last plane of promptly arbitrary top hammer and initial point coincided, " 0 " position of its corresponding vernier 21 transferred to " 0 " position of ruler 22 and coincides, and fixing respectively.While transfers to " 0 " position with the displacement demonstration of corresponding displacement transducer (19) on display.Needs according to operating habit and synthesis technique are provided with location benchmark, starting point, synchronization accuracy, synchronous error, offside warning etc. synchronously by microcomputer then, are described below respectively:
1, location benchmark:
Be the benchmark of setting for the feeding location of pyrophillite combination block Yk (seeing Fig. 6, Fig. 7), among the figure, 7z, 7x, 7h are respectively left hydraulic cylinder assembly Gz., the top of hydraulic cylinder assembly Gx, back hydraulic cylinder assembly Gh is hammered into shape down.Pyrophillite combination block Yk is that the length of side is the regular cube of L, and synthesis technique requires the center of pyrophillite combination block Yk and the initial point of three-dimensional coordinate system to coincide, and six square planars of pyrophillite combination block Yk parallel with X, Y, the Z axle of three-dimensional coordinate system respectively.For the position that guarantees pyrophillite combination block Yk when the feeding accurate, top commonly used is hammered the last plane of 7z, 7x, 7h into shape as the location benchmark, promptly when feeding top hammer 7z, 7x, 7h on the plane be 1/2nd of L to the distance of initial point, can realize (referring to Fig. 3) by mobile adjusting pad 14 and the upper-lower position of adjusting mother 15.The last plane of other three top hammers is the bigger the better to the distance of initial point, also is to realize by the upper-lower position of mobile adjusting pad 14 and adjustment female 15.When solenoid directional control valve 33 energising commutations, six back cavity h and six hydraulic control one-way valves 31 are communicated with high-pressure oil passage, six hydraulic control one-way valves 31 are opened, six ante-chamber q are respectively through hydraulic control one-way valve 31 and solenoid directional control valve 32s, 32x, 32z, 32y, 32q, 32h and fuel tank are connected, piston 11 spurs plunger 4 and moves backward under the promotion of hydraulic oil, stop motion when piston 11 is run into adjusting pad 14, wherein 7z is hammered on the top into shape, 7x, the last plane of 7h is in the position location, the last plane of other three top hammers is in when the distance of initial point is maximum, solenoid directional control valve 33 power-off restorations are for getting ready the feeding location.
2, synchronous starting point:
Synchronously starting point is prepared for pressurization synchronously, just before pressurization synchronously, goes up the plane for six and all equals St to the distance of initial point, promptly is on same " starting line ".Starting point is divided synchronous starting point of high pressure and the synchronous starting point of super-pressure again synchronously.
The synchronous starting point suggestion of high pressure choosing: St=L ÷ 2-δ
L-is the length of side of pyrophillite combination block Yk.
δ-be pre compressed magnitude, suggestion δ selects 0.2---0.5mm for use.
The synchronous starting point of super-pressure will be determined according to experiment.
Behind the pyrophillite combination block Yk feeding location, start working procedure, microcomputer sends instruction, make solenoid directional control valve 32s, 32x, 32z, 32y, 32q and the 32h commutation of switching on simultaneously, the top hammer of six group oil cylinder assemblies moves to initial point simultaneously, the displacement signal input microcomputer 26 that while six displacement transducers 19 measure is handled, when plane on certain when the distance of initial point equals St, microcomputer sends instruction, make corresponding solenoid directional control valve power-off restoration cut off oil circuit, should go up plane stop motion, and go up planes when the distance of initial point all equals St for six by the time, system finishes synchronous starting point operation, going up the plane for six is on same " starting line ", microcomputer sends instruction, makes solenoid directional control valve 32s, 32x, 32z, 32y, 32q and the 32h commutation of switching on simultaneously, system begins to enter the synchronous pressure period of high pressure.
3, synchronization accuracy:
Be the bilateral tolerance of setting in advance as required, suggestion is chosen for: ± 0.15mm, arbitrary synchronous error that goes up the plane must not exceed above-mentioned tolerance value.
4, synchronous error:
In arbitrary time in the synchronous pressure process of high pressure, go up the plane certain go up the poor of the distance (absolute value) that arrives initial point in the plane to the average distance (absolute value) and this moment of initial point for six, be called the synchronous error on plane on this, can be calculated as follows:
Tx＝(|S1|+|S2|+|S3|+|S4|+|S5|+|S6|)÷6-|Sx|
In the formula:
The synchronous error on the last plane of Tx---.
The last plane of Sx---is to the distance of initial point.
S1, S2, S3, S4, S5, S6 are respectively six distances that go up the plane to initial point.
In use, the displacement signal that six displacement transducers 19 measure is imported microcomputer 26 at any time and is handled, when the synchronous error on plane on certain is leading greater than 0 the time, less than 0 o'clock for lagging behind, it is offside exceeding synchronization accuracy.In the synchronous pressure process of high pressure, synchronous error when plane on certain equals+during 0.15mm (upper limit of synchronization accuracy), microcomputer sends instruction, the solenoid directional control valve power-off restoration that plane motion on this is controlled in order cuts off oil circuit, should go up the plane stop motion, catch up with on the last plane that wait lags behind, the synchronous error on the last plane of stop motion is simultaneously also progressively changed to-0.15mm by+0.15mm, synchronous error when plane on this equals-during 0.15mm (lower limit of synchronization accuracy), microcomputer sends instruction, this electromagnetism of going up plane motion of order control changes valve to the energising commutation, connection high-pressure oil passage, plane setting in motion again on this.Therefore, in the synchronous pressure process of high pressure, six synchronous errors that go up planes are controlled at all the time ± scope of 0.15mm (synchronization accuracy) in.
5, offside warning:
In arbitrary time in the synchronous pressure process of high pressure, when arbitrary synchronous error that goes up the plane exceeds synchronization accuracy, microcomputer sends instruction, make warning electric bell 30 power alarm, solenoid directional control valve 32s, 32x, 32z, 32y, 32q, 32h power-off restoration simultaneously cut off oil circuit, go up plane stop motion simultaneously, wait pending for six.
In arbitrary time in the synchronous pressure process of super-pressure, when arbitrary synchronous error that goes up the plane exceeds synchronization accuracy, microcomputer sends instruction, make warning electric bell 30 power alarm, solenoid directional control valve 34 power-off restorations, communicating valve 37 commutations, the ante-chamber q of six hydraulic cylinder assemblies seals respectively, go up plane stop motion simultaneously for six, booster 35 resets, and waits pending.
Claims (3)
1, a kind of plunger type cubic hydraulic press, it comprises with 12 bearing pins six groups of operating cylinder assemblies is connected into the almost spherical structure, and be loaded on the base, it is characterized in that: the operating cylinder assembly is that ram cylinder is connected in series with ram cylinder, plunger and piston fuse, the endoporus of hinge beam is fixed a backhaul cylinder barrel, i.e. ram cylinder cylinder barrel as the plunger cylinder cylinder barrel in hinge beam back; Displacement measurement, display unit are housed, the control device of control displacement on ram cylinder.
2, plunger type cubic hydraulic press according to claim 1, it is characterized in that: described displacement measurement, demonstration, control device comprise: the positioning linkage rod that is fixed on tailpiece of the piston rod, the other end of positioning linkage rod and the axis of guide flexibly connect, on positioning linkage rod, fix a ruler and displacement transducer, fix a vernier on the backhaul cylinder barrel, the signal cable of displacement transducer connects digital displacement meter, microcomputer, display, solenoid directional control valve.
3, a kind of method of utilizing the hammer displacement of the described plunger type cubic hydraulic press of claim 1 observing and controlling top, it is characterized in that: the displacement of cubic hydraulic press top hammer is by the displacement transducer collection, import microcomputer behind this displacement signal input digit displacement meter, data are after MICROCOMPUTER PROCESSING, difference input display, each power amplifier, signal is controlled magnetic valve respectively after amplifying, and described top hammer displacement detecting and controlling comprises:
(1) observing and controlling of location benchmark: with three top hammers (7 in six top hammers
z), (7
x), (7
h) last plane as the location benchmark, i.e. top hammer (7 during feeding
z), (7
x), (7
h) last plane be 1/2nd of the pyrophillite combination block regular cube length of side to the distance of initial point, this distance can and be adjusted mother and regulate by mobile adjusting pad;
(2) observing and controlling of starting point pressurization synchronously: refuel by microcomputer control, plunger is travelled forward, make that going up the plane for 6 all arrives the St value,
St=L ÷ 2-δ wherein, L is the pyrophillite combination block length of side in the formula, δ is a pre compressed magnitude,
The δ value is between 0.2-0.5mm;
(3) the high pressure observing and controlling of pressurizeing synchronously: the control synchronous error is ± 0.15mm in pressurization,
Tx＝(|S1|+|S2|+|S3|+|S4|+|S5|+|S6|)÷6-|Sx|
In the formula:
Tx: sometime, the synchronous error on plane on each,
Sx: a certain distance that goes up the plane to initial point,
S1, S2, S3, S4, S5, S6 are respectively six distances that go up the plane to initial point;
(4) super-pressure is communicated with pressurization observing and controlling;
(5) pressurize observing and controlling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99126368A CN1108918C (en) | 1999-12-17 | 1999-12-17 | A planger-type hexagonal upward hydraulic press and method for measuring and controlling shift of upward hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99126368A CN1108918C (en) | 1999-12-17 | 1999-12-17 | A planger-type hexagonal upward hydraulic press and method for measuring and controlling shift of upward hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1300668A CN1300668A (en) | 2001-06-27 |
| CN1108918C true CN1108918C (en) | 2003-05-21 |
Family
ID=5284423
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99126368A Expired - Fee Related CN1108918C (en) | 1999-12-17 | 1999-12-17 | A planger-type hexagonal upward hydraulic press and method for measuring and controlling shift of upward hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108918C (en) |
Cited By (1)
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| CN102126032A (en) * | 2011-03-25 | 2011-07-20 | 洛阳齐瑞金刚石设备制造有限公司 | Device for precisely boring lug hole of hinge beam |
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| CN1332743C (en) * | 2003-12-04 | 2007-08-22 | 蔡博 | Method for working of two-sided press of cubic apparatus artificial diamond press and its top hammer |
| CN102536934A (en) * | 2012-02-28 | 2012-07-04 | 徐州重型机械有限公司 | Dual-cylinder synchronous control hydraulic system and crane |
| CN110695363B (en) * | 2019-10-18 | 2021-12-14 | 成都比拓超硬材料有限公司 | Flat interface polycrystalline diamond composite material for drilling and milling |
| CN114618383A (en) * | 2022-03-14 | 2022-06-14 | 郑州中南杰特超硬材料有限公司 | Novel hydraulic system of hinge type cubic press for superhard material synthesis |
| CN114570286B (en) * | 2022-03-31 | 2024-03-12 | 河南四方达超硬材料股份有限公司 | Control method of hexahedral top press and hexahedral top press |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1300668A (en) | 2001-06-27 |
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