Water knife principle (go up)

Time:2023-06-15 16:26:06
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source:NODIE CNC Machining

Brief introduction is in the effort that cuts cost, the engineer needs to seek new dominant position from beginning to end with production branch. Water knife technology offerred a variety of unique functions and advantage to you. Understand water knife technology deep, the cut equipment that makes you have an opportunity to use these economic cost. Outside dividing low cost cut, water knife still is considered as the function on the world the processing technique with the rapiddest rate of most appearance, growth (according to Frost&The report of Sullivan and company of Market Intelligence Research) . Water knife is used extensively inside global limits at high yield to apply. It and other technology (milling machine, Lei She, EDM, plasma and planer) supplement each other. Water knife cut does not use toxic gas or liquid, won't produce toxic substance or steam. Surface of water knife cut does not leave any HAZ or machinery is out of shape. It is one kind true muti_function, efficient cold cut technology. Water knife has proved he can complete the work that other technology cannot handle. From in the detail with the paper-thin cut on stone material, glass and metal, fast on titanium alloy bore, cut food, till drink makings and solution to undertake antiseptic disinfection, water knife had proved its unique value. Historical Dr. Norman Franz of water knife all the time by accepted the father of the knife that it is water. He is research superhigh pressure (UHP) the first person of tool of water knife cut. The definition of extrahigh voltage is prep above 30000 Psi. Dr. Franz is engineer of a forestry, he wants to search a kind to become big truncal cut the new method of lumber. 1950, franz first time puts very heavy heavy thing to water column, force water to carry a very small spray head. He obtained brief high-pressured efflux (exceeded the pressure that uses now for many times) , and can cut wood and other material. His research later involves more successive current, but he discovers it is very difficult to obtain continuous maximum pressure. In the meantime, the life of the spare parts also with minute computation, the number week that is not today or a few months. Dr. Franz never makes the lumber cutter that gives a kind of quantity to produce. Now day lumber cut is one of application with extrahigh voltage main least of all technique however. But Dr. Franz proved current of high speed assemble has huge cut energy - the dream that the application of this kind of energy was head and shoulders above Dr. Franz. 1979, dr. Mohamed Hashish works in blessing salary lab, begin to consider to add the method of energy of water knife cut, so that cut metal is mixed other horniness material. Dr. Hashish by fair the father that thinks to increase arenaceous water sword, he invented the method that adds arenaceous makings in ordinary water knife. His use garnet (a kind of commonly used material on sand paper) as arenaceous makings. Depend on this kind of method, water knife (contain arenaceous material) can cut almost any material. 1980, add first time of arenaceous water knife to be used at cut metal, glass and concrete. 1983, the first commercialize add system of cut of arenaceous water knife to come out, be used at cut automobile glass. The first batch of users of this technology are aerospace industry, they discover water knife is the stainless steel that place of cut military airplane uses, titanium and high strenth the ideal tool of light-duty synthesis material and carbon fiber composite material (already used at civil aircraft now) . Since then, add arenaceous water knife to be adopted by a lot of other industry, for example industry of processing factory, stone, ceramic tile, glass, reaction engine, building, nucleus, dockyard is waited a moment. The generation of high-pressured water is basic technology already simple complex. Below the most fundamental condition, water has flowed from pump, through conduit, pour out of from cut knife head next. Its specification, operation and safeguard very simple. But, this one process includes very sophisticated material technology and design. To generate and control 60000 Psi hydraulic, need the science and technology that does not have on book. Below this kind of pressure, if the design is undeserved, tiny leak causes permanent aggressivity to damage to workpiece likely. Fortunately, water knife manufacturer used sophisticated material technology and advanced engineering design. The user needs to understand basic water knife to operate knowledge only can. By nature, have knife of two kinds of water: (1) knife of pure water water and (2) increase arenaceous water sword. Equipment design is can use knife of pure water water only, can use only increase arenaceous water sword, or both all but. No matter why be planted form, must be opposite above all water pressurization. Pump pump is the core member of water knife system. Undertake pressurization to water and output current continuously, let cut knife head turn into high-pressured water thereby efflux of supersonic speed water. Water knife application can use two kinds of pump - booster pump and direct drive pump. Direct drive pump is direct the working way of drive pump and the low pressure that the building is rinsed before spray paint or use when board " pressure cleaner " same. It is a kind direct the 3 class pump that by electric machinery drive 3 pistons generation moves. Because its are simple reliable, these pump got water knife industry approbate. When distributing news dispatches to the article till, the greatest continuous actuating pressure that direct drive pump can provide is lower than booster pump 10 ％ arrive 25 ％ (direct drive pump is 40 K to arrive to 50K, booster pump for 20K 60K) . Direct drive pump also is a kind of relatively new-style high pressure pump (on 80 time later period begins the century appear on the market) although direct drive pump is used at certain industry,apply, at present great majority is used at the extrahigh voltage pump of water knife or booster pump. Booster pump has pipeline of two kinds of fluids in common booster pump, conduit and hydraulic pressure are in charge of. Conduit pipeline includes pump of entrance water filter, step up, supercharger and shock absorber. Filter with entrance water the system filters ordinary tap water - include filter of a 1 micron normally the canister mixes 0.

Canister of 45 micron filter. Carry the water after filtering to step up pump next, entering saliva to press is 90psi about here - make sure supercharger scarcely can lack water. Carry the water after filtering to booster pump later, pressure is elevatory to 60000 Psi. Before pump leaves in water and carrying cut knife head through conduit, turn around shed classics shock absorber first. This tank amortize pressure is fluctuant, ensure the water that carries cut knife head is stable, coherent. If do not have shock absorber, aux will be able to sees quite and hear current pulsatile, be being gone up to leave impress by cut material. Hydraulic pressure pipeline includes electric machinery (25 to 200HP) , hydraulic pump, gasoline tank, manifold and piston / force plunger. By hydraulic pump of electric machinery drive. Hydraulic pressure helps riverside from gasoline tank oil absorption, lift pressure to 3000 Psi. High-pressured oil is defeated to send manifold, the stroke action that produces supercharger by manifold valve (send force plunger through transporting hydraulic pressure oil / a side of piston component or other a side) . Booster pump is riverside of a kind of reciprocating type side, namely force plunger / piston component makes a round trip reciprocate, when low-pressure water is full of a side, in booster pump additionally a side outputs high-pressured water. Hydraulic pressure oil gets cooling in the process that returns gasoline tank. Typical booster pump plant. This plant design is independent type, conformity of and rather than embodied the advanced technology that help riverside to the booster pump in athletic equipment. What the specification of road of conduit of no less than describes in that way, booster pump goes to the tap water pressurization after filtering 60000 Psi. Those who use is " pressure boost principle " . Hydraulic pressure oil is reached by pressurization 3000 Psi (citing) . Drive a piston by hydraulic pressure oil. The piston area that the exterior area ratio of force plunger chooses water a side is 20 times smaller. Accordingly, the oil pressure of 3000 Psi by pressure boost 20 times, generation 60000 Psi is hydraulic. "Pressure boost principle " the area in altering pressure equation is variable, increase thereby or increase pressure. Pressure ＝ force / the area if force ＝ 20, area ＝ 20, so pressure ＝ 1. If retentivity is changeless and reduce an area considerably, criterion pressure will be elevatory. For example, the area from 20 fall 1, pressure general from 1 add to 20. In following sketch map, small arrowhead shows the oil pressure of 3000 Psi, the piston area that it drives is 20 times of area of force plunger surface. Consequently pressure boost comparing is 20: 1. With circle in following specification the group went piston and force plunger. The piston contains small arrowhead, state towards the left is mobile. Two water force plunger is delayed from the two side of the piston extend. High-pressured water from left pour out of, and low-pressure water from on the right side of infuse. In the terminus of the journey, piston / the order of force plunger component is put upside down. Complex check valve makes sure low pressure and high-pressured water flow to a direction only. The high-pressured oil cylinder that holds force plunger and piston system and upright lid course are special design, enough bears vast power and abiding exhaustion. Use 10: The pressure boost of 1 compares the oil pressure with 3000 Psi, is those who form hydraulic how much be? Those who form is 10 times will be hydraulic pressure oil pressure more hydraulic. Because this answer is 30000 Psi. The design of whole apparatus is paid attention to prolong life, use at the same time prevent breakdown fashion design. The breakdown of water knife system is progressively advance gradually, and rather than happens instantly. Pass the spilled water hole that designs technically, sealed begin leak slowly with contact. Operator or safeguard personnel to be able to see spilled water hole appears slowly a water. When do the quantity of drop water and positional delegate need to safeguard. Normally the circumstance falls, through observing the leak of this kind of progressively advance gradually, safeguard personnel to be able to decide 1 safeguard regularly to the 2 need inside week sealed or check valve. The device that help riverside still gets what warn and close machine sensor monitor, with preventing to help the attaint of riverside further. The trouble removal work of booster pump is quite simple. Spilled water hole pours out of hot water to show high-pressured leak, cold water shows low-pressure leak. In actual picture, red shows hot water or warm water water, blue shows cold water. After high-pressured pump generation is hydraulic, high-pressured conduit conveys water to cut knife head. Besides water of transmission high pressure, conduit also helps cut knife head realize free movement. The form with high-pressured the commonnest conduit is special type stainless steel is in charge of. Conduit has different specifications, use at different utility. 1/4 inch steel tube - because its are provided,can circle a gender, this kind of conduit often is used as the tubal material of athletic equipment. Need not carry high-pressured water at Sunday run (arrive from pump for example the base of athletic equipment) . The 10 pipe that grow to 20 feet are used at moving to X, Y and Z axis water supply (call high pressure to twitch) . It is bent easily fold. Also can plant this pipe dish into the circle (circle of the canal when Sunday run is carried can be offerred bigger can circle a gender) . 3/8 inch steel tube - commonly used at carrying water to athletic equipment base from pump. Can bend fold. Do not provide material with what make athletic equipment normally. 9/16" steel tube - commonly used carry high-pressured water at Sunday run. Its internal diameter can reduce pressure loss. When need uses very big pump, this kind of pipe is very useful (the capacity that needs transmission high-pressured water is more, potential pressure loss is bigger) . This canal cannot be bent fold. The place that bend horn needs to use contact (3, bend) . If cold water carries the leakage that build discharge from booster pump slowly, is what you see low pressure or high pressure sealed breakdown? Because pass alveolus,sealed breakdown meets maximum pressure (attrition) squeeze a current and produce quantity of heat, low-pressure leak won't produce apparent quantity of heat. Because this answer is low pressure. Pipe needs not only when transmission water and implementation move, also need other fittings. The likelihood needs 3, direct head, bend, cut off a powerful person and swivel pipe joint. Swivel pipe joint - the contact kind that different athletic form needs to differ. The three-dimensional treatment tool that takes 5 axes wrist is used rotate an exercise that achieves cut knife head. This special device uses the dot is caught implement will catch efflux. The water knife of two kinds of types knife of two kinds of water is to show knife of pure water water is mixed increase arenaceous water sword. Both all has the distinctive property of experience card. Knife of water of pure water of knife of pure water water is the earliest water cut method. First time commerce applies only then at 20 centuries seventies metaphase, use at cut corrugated fibreboard. The application with the biggest knife of pure water water is cut abandons type diaper, tissue and car interior trim. Mix to tissue abandon type diaper, compare with other technology photograph, the exaggeration that water knife technology leaves on material is least. In certain diaper or tissue factory, unforeseen stoppage time to other cut technology talk is very widespread, cost exceeds horary 20000 dollars. And water knife offers annual for this kind of application ceaseless move continuously - in safeguarding an operation to be able to be brought into to produce a course. The flow with the characteristic very thin · of knife of pure water water (common diameter limits: 0.

004 to 0.

010 inches) it is OK that doesn't geometrical appearance · produce ply of cut of · of quantity of heat when cut of very little · of material cut loss can be very big · also cut very thinly fast · of · cut speed can does cut pledge softly, gently material? When quickening water to high speed, the temperature of water can rise. Pour out of nozzle as water, attrition force and other element can increase hot flow. In order to drink water water Wen Wei is bit more initiative. Every increase 1000 Psi, water temperature rise is fast 2 go to 3 degrees. Accordingly the temperature of the current of 3 horses conspicuous is about 170 to 180 degree Fahrenheit. Head of knife of cut of knife of pure water water is narrated like preamble place, flow of basic water knife includes water to be poured out of from side riverside, pass conduit and output from cut knife head. In water knife cut, material purify process can call supersonic speed to erode a technology. Dividing those who leave material particle is not pressure, however the speed of current. Pressure and speed are two kinds of disparate energy forms. Of Dan Bangpu hydraulic be how to be changed into form of additionally one kind of energy (namely water fast) ? The answer is a cabinet gem. Contain in the extreme of pipe a gem. There is a very small opening in gem. High-pressured water crosses this petty mouth is poured out of, thereby speed of pressure translate into. Be in about when 40000 Psi, the current that pours out of nozzle moves with the speed of 2 horses conspicuous. Below 60000 Psi, its speed exceeds 3 horses conspicuous. To average cut, the diametical limits of nozzle of knife of pure water water is 0.

004 to 0.

010 inches. Move back and forth with tractor nozzle in order to erode when concrete, commonly used is individual and good-sized nozzle, 1/10 of the biggest diameter inch. 3 kinds of commonly used nozzle material (sapphirine, ruby, diamond) each have its distinctive attribute. Sapphirine is the most commonly used now nozzle material. It is gem of man-made single crystal. Its current quality is quite good; The cut life that there is 50 to arrive 100 hours about below good water quality condition. In adding arenaceous water knife to apply, the life of sapphirine is the 1/2 that knife of pure water water applies. Normally the circumstance falls, the price of sapphirine is in 15 to 30 dollars / piece between. Ruby also can be used at adding application of arenaceous water knife. Its current character suits to increase arenaceous water sword very much, but do not suit cut of knife of pure water water too. Its cost and sapphirine are roughly identical. The service life of diamond grows more (800 to 2000 hours) , but the price tall 10 to 20 times. Diamond is very useful below the situation that needs to move 24 hours continuously everyday. Differ with the nozzle of other type, can undertake to diamond ultrasonic is cleaned sometimes, repeat use. Add arenaceous water knife to add arenaceous water knife and knife of pure water water when to differ only. In knife of pure water water, eat stuff by supersonic speed current. In increasing arenaceous water sword, quicken arenaceous feed grain by water efflux, next by these grain (water of and rather than) eat stuff. The capacity that increases arenaceous water sword is more powerful than knife of pure water water thousands of times. Knife of pure water water and the land that add arenaceous water knife to have its use force. Knife of pure water water but cut is soft simple stuff, and add arenaceous water material of horniness of knife criterion cut, be like material of rolled steel, stone, composite material and pottery and porcelain. Of use standard parameter increase arenaceous water sword can cut hardness is equal to (even in a way exceeds) alumina pottery and porcelain (often call alumina, AD 99.

9) material. We will introduce the characteristic that increases arenaceous water sword below, and the working kind that imposes head of knife of cut of arenaceous water knife. The technical · with the characteristic very general · that increases arenaceous water sword does not have · of stress of instrument of inorganic of HAZ · easily flow of process designing · is thin (diameter 0.

020 to 0.

050 inches) · but the · of cut of weak data of geometrical appearance · with very complex cut loss of cut of material of · of cut of accumulation of · of cut of 10 inches of ply is very little · clamping apparatus is simple · cut force is small (when cut under 1 pound) · is opposite almost all add arenaceous water knife to work. Arenaceous makings is joined after generating pure water efflux. Next canal of knife of edge of arenaceous feed grain is quickened, resemble musket bullet in that way. Adding the arenaceous material that place of cut of arenaceous water knife uses is via be being chosen technically, what size agrees is hard arenaceous. The most commonly used arenaceous makings is garnet. Garnet is qualitative hard, intensity is high and cheap. Like the pink sand paper in hardware store, different measurement uses at different job: 120 Mesh - the exterior 80 Mesh with flowing generation - the most commonly used, run-of-mill utility 50 Mesh - cut rate is a bit rapidder than 80 Mesh, but exterior in a way is a few rougher knife canal quickens arenaceous feed grain in that way like musket barrel. Similar nozzle, knife canal has a lot of different measurement and service life. Knife canal grows 3 inches about, diametical 1/4 inch; Internal diameter limits from 0.

020 to 0.

060 inches, the most commonly used is 0.

040 inches. Although add equipment of arenaceous water knife to often be regarded as to operate simple reliable facility, knife canal needs to get the attention of operator. The main progress of water knife technology invented the knife with very long life to be in charge of namely. Unfortunate is, the carbonization tungsten canal of canal of macrobian life knife than before is gotten flimsily much. If cut knife head encountered clamping apparatus, clog or target material, the knife provides possible burst. Cracked pipe cannot repair. Current, the most advanced system deserves to have prevent collision to explore device, in order to protect knife canal. The span of knife canal and target material is normally 0.

010 to 0.

200 inches. When span is bigger (be more than 0.

080 inches) can bring about occurrence pulverization of brim of spare parts cut. System of knife of a lot of waters uses underwater cut or other technology is reduced or eliminate this kind of pulverization. The bad news material in increasing cut of arenaceous water knife is water, arenaceous makings, nozzle (it is ruby normally) and knife canal. Arenaceous makings and knife canal are to add the material with particular place of arenaceous water knife. Material of other bad news also can be used at knife of pure water water. Equipment runs equipment of water knife exercise or machine tool to have a lot of different types and configuration. Outside moving except implementation, the machine tool still must be included use at securing cut material, catch efflux, gather water and drossy device. Stationary and stationary of 1 dimension equipment water knife is a kind of the simplest equipment. It looks like to curium knife, use at the nap of the composite material in spaceflight industry normally. Curium like the operation the knife is same, operation personnel lets enter makings cross stream. Material by cut hind, can collect groove current and drossy. Knife of pure water water is below the circumstance normally, but equipment of some of stationary water knife deserves to have increase arenaceous water sword. Another kind of type of fixed apparatus is straight-cut machine. Send a product to the machine (for example paper) when, the product can be become by water knife cut specific width. Another kind of type of odd axis mobile apparatus is transversely machine. Transversely machine is used together with straight-cut machine normally, although it is not true fixed apparatus. When transversely machine cut carries the product of its lower part, straight-cut machine becomes product cut specific width. Straight-cut machine and transversely machine often coordinate the work together, cake of Lang Ni of the cloth in because this material is become by cut,resembling an automat in that way reseau graph. Do not suggest the hand moves an operation to increase arenaceous water sword commonly (material of the shift that use a hand or cut knife head) - moving with the hand by specific rate is very difficult. Most manufacturer does not suggest the hand is moved the operation increases arenaceous water sword or offer quoted price. Fall in the specific requirement that assures operator safety only, ability hand moves an operation increase arenaceous water sword. With the XY workbench at 2 dimension cut XY workbench calls sometimes " flat material equipment " , it is equipment of the commonnest exercise of knife of a kind of water. These equipment use gasket of cut of knife of pure water water, plastic, balata and bubble. Add arenaceous water knife to use this kind of workbench to come material of cut metal, composite material, glass, stone and pottery and porcelain. Any likely compressed sketch design can be on workbench cut. The size scope that increases arenaceous water knife and workbench of knife of pure water water is in 2 X 4 foot to 30 X 100 foot between. The main component of XY workbench is: By CNC or motor of PC control servo, use dead loop to pass on normally in order to ensure the consistency of the position and speed is basic device, take wired sex slippery course, bearing with device of bridge-type of drive of ball guide screw, also contain slippery course, bearing collect groove with ball guide screw, contain material support to offer a lot of different equipment types, but two kinds of disparate types are on regnant position, namely machine of cut of dragon door type and machine of cantilever type cut. Flat material equipment (call XY workbench normally) have a variety of configuration in order to satisfy specific application. Some are small-sized and accurate equipment, other is big crop equipment. Machine of cut of dragon door type has two base course and a bridge. Machine of cantilever type cut has base course and bridge of sex of a steel. In next graphs, green bridge moves to a direction, and gules arrowhead (show cut knife head) move to another direction. The height of cut knife head of all equipment is adjustable (height of cut knife head by Z axle control) . Can touch brace, dynamoelectric spiral through the hand orgnaization or complete but orgnaization of helix of process designing servo adjusts Z axis. The collection on material equipment groove normally flood water, and contain bar or batten with bearing workpiece. Can slow in cut process use up these bearing material. If gather the deposit in groove flotsam, can undertake automatic cleanness; Hand of optional also choose moves cleanness to come fixed Qing Dynasty collects groove for nothing. All XY workbench has the important norms of following respect, this delegate (but do not ensure) the function of your equipment. It is the brief specification of norms of motion of water knife machine tool below, appear in quotation and document normally: The dimension that include a line moves every journey length of the axis. In pure water water knife or add equipment of arenaceous water knife, the commonly used dimension of flat material cut is 2x3x0.

3 rice or make an appointment with 6x10x1 foot. Lade to facilitate thick board, hold circumstance and rough machining considering clip board the change of dimension, collect groove to want to compare journey length and width normally at least big 6 inches. Precision of linear fixed position measures the precision when the machine is mobile. Arrive another a little bit from, measure an axis every time. Did not consider rate factor here. The repetition of the machine the ability that precision machine returns some to nod. The rapiddest floating rate moves the most quickly speed is the top speed when the shift below the case that equipment is not having cut. Control system needs to send signal to drive motor only: "Move as soon as possible toward that direction " . During sudden shift, the precision that the machine moves can be affected normally. Fast and mobile function can be used from method of a cut (exemple if cut hole) shift arrives another cut method (cut hole another times for example) . Cut speed machine is in maintain all precision norms (namely precision, but repeatability, speed) the top speed when the shift below the condition. This is an important norms, because it matters to cycle of spare parts production and precision. CNC Milling