Be based on the research of the technology of CNC process designing of HSM

Summary: In be being machined in the light of high speed new technology, new requirement, apply a respect to undertake discussing carrying out to technology of CNC process designing from method of process designing train of thought, process designing, software. In elaborating practice procedure, with high speed treatment concept is guidance, use standardization method, develop 2 times to UG software, have the process method of the process designing of CNC treatment and verdict. Keyword: High speed treatment; Process designing technology; UG high speed machines the treatment that is different from traditional pattern, have main shaft rotate speed tall, cutting estimates rate of feed of tall, cutting characteristic of generous of excision of the material inside time of small, unit. Use high speed processing technique to will raise workpiece to machine efficiency and exterior quality greatly. In recent years, high speed treatment makes a domain receive wider and wider application in the mould with its outstanding specifications, the requirement CNC process designing that because this is right also,implementation high speed machines raised new challenge, new requirement. Train of thought of 1 process designing 1.

1The relation HSM of HSM and EDM and EDM relation can use a figure 1Salomon curve expresses. HSM and EDM are two kinds of methods that the mould machines, different place is had in mould treatment domain, both compete each other namely mutual depend on sb or sth for existence. What kind of mould uses HSM treatment, what kind of mould to use EDM treatment, the what position of the mould uses HSM treatment, what position to use EDM treatment, it is the issue that needs thinking of personnel of technology of CNC process designing. 1.

2The adjustment of strategy of CNC process designing (the connotation of connotation CNC process designing of 1)CNC process designing is extensive, the program that includes mould itself to need CNC to machine the position is written, of the design that needs EDM place electrode and its CNC machine program write. Because this is different,process designing uses what will decide HSM and EDM directly politicly to apply. Below the requirement that machines in high speed, must undertake adjustment to train of thought of process designing whole. (Before 2) steel expects careful treatment strategy is using steel to expect careful treatment is politic, consideration penknife machines steel makings to break a knife easily, housing kind CNC of mould steel makings machines diameter of the smallest cutting tool common limit is in φ 6 or φ 4, after CNC is machined, there still is many remain surplus to require EDM treatment on modular benevolence, create the waste of EDM resource and electrode material thereby, the mould manufactures loss of efficiency. And in fact, in high speed treatment condition falls, cutting force is reduced, high speed moves cut bits to will take away many cutting quantity of heat, because this can not affect cutting tool life. From the graph 2 in can see, when cutting speed is more than Min of 300 M ／ , cutting force lifts along with cutting speed and reduce: It is a basis with this theory, adopt steel to expect careful treatment is politic, optimize CNC program namely, will the position that can machine with CNC in modular benevolence does not have buy in process designing as far as possible. When process designing, develop the function of the penknife adequately, as far as possible purify needle is horn, narrow seam office data, reduce EDM treatment. (DIH of 3) process designing; The wither of type rectifies a basis to produce a condition currently, the model that mould CNC treatment uses basically is machine of Roeders high speed and machine of Moriseiki high speed, rotate speed of Roeders main shaft is higher, highest can amount to Min of 42000 R ／ , rotate speed of Moriseiki main shaft is a bit low, highest for Min of 20000 R ／ . And hardness of material of modular benevolence steel relatively electrode copper stuff is expensive. Fierce this is when process designing, the change machined electrode, Moriseiki to machine the strategy that steel expects with Roeders once upon a time, use rotate speed of Roeders main shaft the dominant position with good quality of tall, Dil]L, apply its to machine the standard with higher hardness benevolence, and machine the cupreous electrode with inferior hardness with Moriseiki, achieve thereby use the resource, end that improves treatment efficiency effectively. Method of 2 process designing 2.

1 process designing standardizes put forward a mould to make periodic length value of immediate impact economy, it is important to because this much produces business,put mould production plan put mould production plan in production the position. It is pursuit target with this, all sorts of fast moulds, standardization mould appears eagerly. The mould standardizes a technology also emerge as the times require, the process designing standardization that regards mould production standardization as important segment is carried out imperative also. Nextpage2.

Electrode of establish of standardization of 2 electrode design does not have juice train of thought, electrode to design a variety of detail in general principle and design electrode to ask. Be like: Face of exterior of modular finished product must tear open integral electrode before, do not allow two electrode to connect, integral electrode CNC cannot machine the place that reach the designated position to use means of cupreous clear copper to machine (graph 3) . 2.

3 electrode process designing is standardized (standardization of cutting tool of 1) electrode treatment is aimed at characteristic of appearance of constant treatment electrode, stipulated commonly used cutting tool mixes electrode be not commonly used cutting tool. Norms of commonly used cutting tool is chosen as far as possible when process designing, commonly used cutting tool is secured in the knife date on CNC machining center, saved the many outfit knife, time that change a knife, reflected the dominant position that high speed machines. (2) electrode machines parameter standardization to machine theory and function of CNC machining center according to high speed, integrated consideration by feature of cutting electrode material, should establish all sorts of parameter of the different process that of all kinds cutting tool is machining electrode, this parameter standard undertakes the according to when process designing choice, dig the technical advantage that high speed machines adequately. (3) electrode machines politic standardization to be aimed at electrode surface requirement, precision requirement, to electrode treatment method, strategy has general regulation. For instance: Encounter inside R, must choose smaller than the R inside workpiece cutting tool to undertake machining. Below a Sui Kuang, "Cutting tool R " be less than " the R inside workpiece " 0.

5 Mm above (graph 4) . 2.

4 steel expect process designing standardization and train of thought of standardization of electrode process designing are consistent, make steel expect standard cutting tool, steel expects makings of Prim parameter, steel machines strategy to wait for standardization technology parameter, the concept that machines high speed most apply forthrightly at production. 3 software are applied to work the many repetition in process designing exercise translate into computer works, lower mistake rate, improve quality of process designing exercise and efficiency, conception goes out to undertake 2 times developing to software of CNC process designing, if pursue,5 are shown. 2 times development basically uses the programming language implementation such as Grip, VC, VB, carry development 2 times, controallable the UG software interface of all users inside the local area network, shortcut key is consistent, the means that makes personnel of process designing technology can press him to be used to on computer of user of the random inside the net thereby handles software and won't affect process designing rate. Treatment of high speed of 4 brief summary posed new requirement and challenge for CNC process designing, also offerred all sorts of advantage. To get used to high speed treatment, undertake 2 times developing to software of CNC process designing, also have higher demand at the same time. Personnel of technology of CNC process designing needs more thorough geography to interpret the intention that high speed machines, provide more perfect technology support for its thereby. CNC Milling