Whorl boils pressing is craft of a kind of figuration, the figure that material is needed with forming place by reset. Result, rolling semifinished product of the work after pressing an operation to finish to be able to grow. Thread machining basically is to use turning outside (use only place and figuration cutting tool) reach grinding (use only point contact or figuration emery wheel) means machines. The principle of craft of cutting of these two kinds of metals is the whorl geometry appearance that remove certain material through going and forms a need. Another kind of technology that uses between each cart is whorl boils pressure. It is not process of cutting of a kind of metal. It does not carry purify metal and form the outline of a need, the mirror that presses filar standard by gyro wheel however forms whorl. The metal machines manufacturer people the front is facing unprecedented competitive pressure. "With the means that always uses " treatment spare parts had won'ted do. best treatment craft and photograph of specific application circumstance match, to exercise of a certain treatment character may mean or from which gain, or with respect to lose it. Bounds is special strict and do not have room for manoeuvre. One kind when machine to show screw cutting and grinding can replace a method, article introduction whorl rolls the actor that is pressed on CNC turning center, defect. Discussed application norms boils with all sorts of whorl press a type, technical data comes from LMT-Fette company () of Ohio Cleveland city. Without generally speaking of craft of figuration of the whorl that cut bits, it is very difficult to suit to roll the material that press most cutting, vice versa. Whorl boils press the plasticity that relies on base material - namely of base material be out of shape ability, so that control the appearance of gyro wheel permanently in the blank of workpiece. Can be brought about to form normally by the plasticity with cutting good stuff colloid cut bits, form the tumour that accumulate bits on cutting tool. For example cast-iron characteristic without appropriate flow, because this does not suit,undertake whorl boils press treatment. LMT-Fette company thinks, because roll the action of wheel load force, will make material happening plasticity is out of shape, generation the smallest coefficient of elongation of 5% and 246, 000 pounds / square inch (this station notes: The drawing that adds up to 173kgf/mm² or 1698MPa) about succumbs intensity. These data follow material to type, old way and second diameter dimension differ and differ. This sketch map expressed to boil press whorl (left) machine whorl with cutting (right) the distinction between particle shedding. Whorl boils press a process to be able to produce additional tensile strength to improve the appearance bright and clean degree. Semifinished product material rolls the pressure in controlling a process because of whorl and generation plasticity is out of shape, because this meeting generation is the youngest the outspread rate of 5% and the biggest 246, 000 pounds / square inch tensile strength. Boil in whorl in controlling an operation, in the axial of workpiece, tangential or radial installation a gyro wheel is worn. Although every kinds of gyro wheel wearing uses same basic operation principle, but situation of different thread machining application needs to use different kind to be close to work semifinished product. The article will introduce 3 kinds of whorl to boil in detail at the back control fashion. Assume workpiece material is satisfied character boil press succumb to ask with flow, boil control process and whorl cutting appearance than having a certain number of advantages. Compare with photograph of other production methods, roll the whorl physics character that presses treatment to come out to get rising. What in controlling a process, use boiling in whorl is cold exercise, operated photograph comparing to increase tensile strength with cutting so, improved the appearance bright and clean degree. Like a lot of cold working operations, the metallic matrix of work semifinished product carries the active force of the mould at first and compress, undertake plasticity succumbs thereby, produce the appearance that gives a pattern. Whorl boils control mode of operation greatly as identical as this. The appearance that whorl rolls the gyro wheel in pressure head can form whorl appearance in work semifinished product. The compression of mother capable person is brought about cause workpiece sclerosis because of the compression of metallic matrix. It can produce fatigue obstruction in whorl. This kind of sclerotic condition is the one part of this craft, any heat treatment processes that because this presses whorl to boiling subsequently,have can produce anneal effect. Whorl boils pressure should undertake after heat treatment. Contrary, turning and grinding can be however before sclerosis is OK also undertake after sclerosis, the appearance that lets metallic matrix produce a need and let metallic particle structure keep intact almost. The can roll the success that press a gender whorl of material boils pressure depend on a certain number of application parameter. Remain to roll the type that presses whorl, old way, pitch and tine root deepness to wait in these parameter. Whorl rolls those who control the semifinished product of square biscuit draw together that considers even additionally to press ductility and cold fluidity to wait. When undertaking boiling pressing whorl, will overwhelm whorl appearance through mobile mother capable person in work semifinished product. A crucial parameter of this kind of shift is deepness of whorl tine root. As gyro wheel the material amlposition that will form a department, material will be poured out of by root ministry from radial and axial. Retain whorl part way by the position of gyro wheel in book dimension, because the material of this amlposition extended work semifinished product actually. Decide according to the dimension that is boiled to press whorl and appearance, compare with screw cutting or cutting photograph, whorl boils pressure can save 15 ～ the material of 20% . In big batch production, this data is meant very big a batch of raw material. Because thread outside diameter and work semifinished product have very close relationship, because of diameter of this semifinished product must very accurate. Data flow rate is the semifinished product diameter that the basis appoints and metabolic ratio calculative. Exceed or give treatment unqualified whorl under this diameter. Material size is too small will not complete inpour gyro wheel presses filar standard. Semifinished product measure passes a general to bring to bear on with gyro wheel wearing to gyro wheel needless pressure, may bring about whorl to boil thereby control unit damage. Whorl rolls the success that press to be concerned with the appearance that should form greatly. 60 ° unite the basis or similar standard forms the most whorl of generation, these boil very easily pressure. The most gyro wheel that is used at processing these form has acerber tine tip, contain circular arc blade to help the model that pull silk normally penetrable material. The angle of these whorl, 30 ° are on every tine flank, assured to make material is in the active force that when axial and radial have flow with a kind of means that can accuse and books, needs. Also can roll whorl of rice of the gram that press love (the imperial echelon whorl that vertex angle is 29 ° ) reach worm whorl, but the distance that must move relative to higher material amlposition volume and material, produce a layer in tine flank likely. Of these type whorl can boil press a gender to be able to pass ministry of change whorl root to configure - from shape of circular arc of flat bottom instead - and improvement. Whorl boils press OK still in pressure polish applying, in pressing a flower, still can use in swaged forging operation below certain circumstance. Axial whorl boils press a basis machine tool type and the whorl kind that should make, the workshop can choose a certain number of whorl to boil press configuration. Axial whorl gyro wheel carries a ministry to begin from turning center tailstock, line of center of edge work semifinished product is mobile, form whorl thereby. Size range of pipe bent is head of general axial gyro wheel diameter 0.
06 ～ 9 inches. Gyro wheel head installs axial to turn in turning center normally one of tower broach shell are medium. It is OK to take a knife will 3 (or most 6) gyro wheel feed arrives on semifinished product, the whirl that carries work semifinished product tries to start. Gyro wheel is decorated on axial head pass to allow semifinished product, can form longer than gyro wheel width whorl so. A few whorl that begin on these gyro wheel heads go forward one by one, like be just like tap or broach, and need is an edge on work semifinished product. Can use shorter go forward one by one before the process machines humeral ministry or other workpiece feature all the time, but the effect that the life of gyro wheel suffers additional stress likely. Whorl boils pressure can use at a variety of appearance are being formed in work semifinished product. Tangential whorl boils control seeing the name of a think one thinks of its function, tangential gyro wheel wearing forms whorl through be close to work semifinished product from flank. Tangential gyro wheel wearing calls flank to boil occasionally press or transverse and slip frame, the design is used at boil through driving to press whorl, undertake with the feed rate that can charge, every time two fixed parallel roller enter the work in rotating at the same time in. Tangential boil press need machinery or servo feed. Cannot the hand moves an operation these gyro wheel. Roller and diameter of work semifinished product undertake quadrate, tangential contact, force material to undertake even plasticity flows thereby, form gyro wheel to play the figure of filar model. Procedure of this kind of figuration is very quick, meeting generation does not have the accurate outline of burr. In the operation, tangential gyro wheel rotates in work semifinished product 15 ～ the 30 generation after turning a complete whorl. The advantage of gyro wheel of this kind of whorl is to be able to be in special before stand by feature of humeral ministry or other workpiece or from the back form whorl (inside a whorl, occasionally fewer) . Tangential gyro wheel boils inside gyro wheel width only press whorl. Of Fette tangential limits of roller job width is 0.
61 ～ 1.
59 inches. These gyro wheel are recommended to use Yuaikemi and echelon whorl, the design limit that because the force of place need exceeded labour,places. Radial whorl boils controlling gyro wheel of the 3rd kind of whorl is radial gyro wheel is worn. It uses two or 3 roller form whorl in the process that work semifinished product rotates. The roller on gyro wheel of this kind of whorl passes prejudicial grinding. By on every roller even part is begun, whorl appearance advance gradually is finished. Low whorl figure begins in even a side, complete appearance is formed in another side. A on labour clip " 3 roller " type radial is worn, with search even part will form clearance mouth. Such work semifinished product can locate be exited between roller and spare parts of finished product whorl and do not damage whorl. "Two roller " type gyro wheel is worn use same principle. From the point of interior, roller is added in through releasing rotate the tensional bedspring on clutch and generation moves. Once release, workpiece or the whirl with unit gyro wheel can continue the forward movement of prejudicial roller, till the torsion of work semifinished product makes till clutch bedspring restoration. The working limits that radial whorl rolls pressure head is 2½ of diametical 1/16 ～ inch. With tangential like rolling pressure head, whorl length cannot exceed the width of whorl gyro wheel. Be opposite about flexible and accurate and accurate thread machining is a kind of crucial skill any workshops. The consideration rolls whorl pressure regard production whorl as the spare parts a kind the tool should regard the likelihood as one of workshop treatment strategy. Whorl boils press need to undertake in gyro wheel wearing and gyro wheel respect cutting tool invests, this kind of investment nods whorl cutting razor blade to want than sheet tall. However, material, faster to involving sclerosis face is bright and clean degree, exterior consistency and the applied circumstance of higher yield, long-term will see whorl boil press a technology to may have higher sexual price to compare. In addition, because gyro wheel wearing also can be on the CNC turning center that provides sheet to nod thread machining function,use, it is OK to because this whorl boils,be pressed the basis applies the need of the circumstance and agile ground tries to apply, according to workpiece actual condition decides correct cutting tool.
CNC Milling