Since reform and opening , with the rapid development of national economy , the market demand for mold growing. In recent years, the rapid growth of mold industry rate of about 15% of industrial enterprises in the mold of ownership , great changes have taken place , in addition to the state-owned professional mold factory , individuals, joint ventures, wholly-owned and private also expanded very rapidly .
" Mold town" and Ningbo, Zhejiang Huangyan area ; Guangdong Some large corporations and the rapid rise of township enterprises, Kelon , Midea, Konka Group I die numerous establish a manufacturing center ; joint ventures and wholly foreign-owned enterprises are now mold there are thousands .
With the pace with international standards from time to time to slow down , increasing competition in the market , people have views on the importance of increasing yield and quality , cost and new product development abilities . The mold is one of the foundation of the entire chain elements , mold manufacturing technology has become an important symbol of the country to weigh down the extent of the manufacturing sector , and the living space is largely resolution enterprises.
In recent years, many mold companies increased investment for technological progress, technological advances will be expanded as an important driving force for business . Some international companies have popularized the two-dimensional mold CAD, and gradually began to use UG, Pro / Engineer, I-DEAS, Euclid-IS and other international common software , common manufacturers also introduced Moldflow, C-Flow, DYNAFORM, Optris and MAGMASOFT etc. CAE software and successfully used in the design of the stamping die .
Automobile cover up mold as the representative of a large stamping die manufacturing technology has been a lot of progress , westerly Motors Corp. mold factory, mold manufacturers , such as FAW mold center energy consumption has been part of the car to cover mold. In addition, many research institutions and universities expand research and development of mold technology . After years of effort , in the mold CAD / CAE / CAM technology to achieve a significant progress ; progress in terms of quality and extend the mold design and mold manufacturing cycle to make a contribution.
For example , Jilin University, automotive masking molding technology developed by independent automotive parts stamping conceal KMAS software analysis , Key Laboratory of Mould Technology , Huazhong University of developed countries injection mold, automotive mold cover up and die CAD / CAE / CAM software , Shanghai Jiaotong University seminar mold CAD Engineering Center developed countries and fine blanking die die seminar Center to develop CAD software, and precision die has a lot of users in the international mold industry .
Although China ’s mold industry gained remarkable start in over ten years, but the industry is booming with many aspects of the country is still a large gap compared . For example , the proportion of precision machining equipment mold processing equipment is relatively low ; penetration of CAD / CAE / CAM technology is not high ; many advanced mold technology uses common enough , etc., resulting in a considerable part of a large , sophisticated, complex , and short-lived life dies dependent on exports.
Future tend to start stamping die manufacturing technology
Expand mold technology products should conform to the mold , " short delivery ", "high precision ", "good quality", " low price " requirement performance. This requires an urgent need to start arriving the following items:
( 1 ) one-sided implementation of CAD / CAM / CAE technology Die CAD / CAM / CAE technology is spreading direction of the mold design and manufacture. With the expansion and advancement of computer software , the popularity of CAD / CAM / CAE technology has fundamentally ripe conditions , companies will increase the CAD / CAM technology training and performance dynamics technology ; further expand the use of CAE technology. Expand the computer and the network is making CAD / CAM / CAE technology cross-regional, cross-enterprise , campus-wide implementation of the land in the entire industry can become a complete re-integration of technology resources , so that the virtual system can be configured .
( 2 ) high-speed milling expanded abroad in recent years, high-speed milling , substantial progress in the processing efficiency and availability of high surface brightness . In addition , the module can also be processed with high hardness , also has a low temperature, thermal deformation is small. Expand high-speed milling technology for the automotive, appliance manufacturing industry, a large cavity mold injected new vitality. Currently, it has more agile , intelligent, integrated direction to start .
( 3 ) Die -speed scanning and digitizing scanner piecemeal and fragmented die scanning provides a scan from the model or models needed to process a kind of hope for many functions , which greatly extends the mold in the development of the manufacturing cycle . Some fast scanning fragmented, can quickly be installed on existing CNC milling machines and machining centers , fast data acquisition is completed , automatically generate a variety of CNC machining sequence piecemeal , CAD data in different formats , for mold manufacturing " reverse engineering ." Mold has lost scanning fragmented successfully used in automobiles, motorcycles , household appliances and other industries, I believe in the "fifth " period will promote a greater role.
( 4 ) discharge milling EDM milling technology is also known as EDM machining technology, which is an alternative to conventional electrode machining molding cavity with new technology , it is a complex tubular electrode for high-speed rotation three-dimensional or two-dimensional contour machining ( CNC milling like the same ) , and thus no longer needs to ｃｒｅａｔｅ complex forming an electrode , which is obviously a serious EDM category unfold . Foreign use of this technology has been used in the mold processing machine . Estimated that this technology will lose unfold .
( 5 ) the degree of progress in the standardization of mold standardization of mold is often progressive , assess the current use of the standard mold to cover the arrival rate of about 30 %. Ordinary booming foreign country is about 80%.
( 6 ) Surface disposal of high-quality materials and advanced technology and high quality steel surface using the appropriate disposal technology advances mold life is very necessary . Mold heat treatment and surface disposal can fully develop key tool steel material functions. Thermal treatment of the deployment direction of the mold by vacuum heat treatment . In addition to improving the mold surface disposal process should commence advanced vapor accumulation (TiN, TiC , etc. ) , plasma spraying technique .
( 7 ) mold polishing automation , intelligent mold surface quality have a greater impact on the use of life , quality and other aspects of the appearance of parts of the mold , seminars automation , intelligent way to replace the existing grinding and polishing by hand to progressive mold surface quality is important to start the trend .
( 8 ) Die automatic processing piecemeal expansion This is our long-term goal to start . Die automatic processing should be more than one reasonable piecemeal combination machine ; with accompanying positioning fixture or positioning plate ; There intact machines, CNC tool library ; has good CNC flexible synchronization piecemeal ; quality monitoring and control fragmented.
CNC engraving machine in the international expansion from a recent two years have launched a larger , processing and application of the relevant units of the hour with keen eyes staring at the manufacturer’s intent , which is as engraving and milling machine is also the host plant consumption the real reason lies not dare to slack .
Of course, as the user to choose the appropriate equipment , if improper selection will not be able to make money but to make the machine work fall into the sweet scene. So what kind of machine is a good machine ?
We think that the machine is defined like this:
Can issue short-term investments in the machine is a good machine .
CNC machine design using ordinary life of 7 years , the life of the minor is to use numerical aspects prevail , so that the ratio between money and the money will directly affect your business, so careful analysis function abort the selection of investment is a necessary condition invalid .
Abroad very early engraving and milling machine nouns (CNCengravingandmillingmachine), is part of the grim speaking carving milling , engraving machine is repairing or repairing CNC milling machining center is often asked my achievements. In addition, the current prevalence of high-speed cutting machine (HSCMACHINE). Let us first figure out the difference between three models :
1 , CNC milling machines and machining centers for milling large amount of equipment to complete the processing of the workpiece 2 , CNC milling machine for milling to complete smaller amount , or 3 soft metal processing equipment , high-speed cutting tools used to complete the milling medium amount and after the grinding mill reduced to a minimum amount of processing equipment
Deepen the analysis of the structure of these devices can help us make the right choice
First, from a mechanical point of view
Mechanical machine is divided into two parts, moving and non- moving part of the section : duty station , skateboards, and other cruciferous Taiwan is moving parts, bed bases , columns and other non- moving part
1 , CNC milling centers :
Non- moving part of the steel requirements of section steel is very good move requires a very good advantages: Abort heavy cutting ; flaw : Since moving unusually large part , at the expense of sensitivity of the machine , on the thick part and rapid feed competent Weili .
2 , CNC milling machine
Non- moving part of the steel required to be a good move part of the steel to be sensitive to the next question before , some of the best possible light , while maintaining a certain degree of rigidity . Advantages: relatively coarse suspended processing , high precision machining . About soft metal may suspend high-speed machining ; flaw: Because steel is poor so can not suspend heavy cutting .
3 , high-speed cutting machine
Non- moving part of the steel requires a very good move part of the steel requirements better, and to make possible light. Advantages : Can abort cutting small amount (for example, the common φ10 flat knife, about 45 steel ( 300 ) deep depth of 0.75 as well ) ; defects : correct use can develop under the efficient, low cost, so polished into little . Incorrect use of the tool will soon scrap piles .
How do the above and light, rigid sound contradictory demands from the machinery, the key lies in the effort on the mechanical structure .
1 , the use of bed and down bars with mesh architecture , and some direct use of the hexagonal honeycomb -like structure connecting the two , wide columns and beams , we know gantry structure because of its excellent symmetry and excellent high-speed steel cutting equipment manufacturers are constantly used as the preferred structure . 3, on the mobile part of a CNC milling obvious difference is that the widening gap between the guide rail and a lot of torque to inhibit undesirable results . 4 , using common sense from the material that Meehan iron, cast iron is bred to participate in a certain proportion of pouring molten silicon (Si) and thus altering the internal structure of iron, so that even more resistant to stamping, there is significant progress on a rigid . 5 , the rigidity of the machine used to suppress the secondary part of moving at high speed when moving to non- moving part of the powerful impact , so rails, screw requires thicker , and strengthen the interface part rigidity.
Second, from a numerical point of view
1 , CNC milling centers CNC fractional ordinary requirements of speed , spindle speed 0-8000RPM 2, engraving and milling machines require high-speed CNC fragmented, spindle speed 3000-30000RPM 3, high-speed CNC cutting machine tools requiring high speed and excellent piecemeal servo motor characteristics , spindle speed 1500-30000RPM
Third, the programming software analysis
From a software perspective, CNC milling machining center , high-speed cutting machine engraving and milling machines can use standard CAD / CAM software, such as : MasterCamCimatronPEUG so on.
Cimatron milling toolpath often think a little better, pay attention to the full version of the software tool for cutting the amount of uniformity at all times , especially in the closing obligations knife into walking speed and smooth the moment , as well as the difference in inflection followers algorithm scores (followingError), so that even more consequences and paste into graphic design , CAD large part just using an intuitive three-dimensional solid shape as Solidworks , etc. etc. and then through into the CAM software IGS abort processing. But do not worry , CAD / CAM expanded much faster than at the commencement of the speed CNC machine tools .
Because of the special nature of the processing tool carved a considerable coarse angle control , with TYPE3 as well.
Fourth, automatic tool change magazine and automatic tool setting requirements
Processing center of a human face is a noun , but I think the magazine must be combined with theoretical requirements .
Processing center in order to complete a variety of processes in the form of automatic numerical control equipment , minor are some high-volume consumer fixed job , if we process a lot of holes , dental cabinet , but also to do about the same ( a minimum two -volume day one hundred or more ) it must choose machining center, on the mold industry and small -volume consumer units do not just turn on a machining center , as seen too many manufacturers to buy machining centers, CNC milling to use when applying for CNC magazine fragmented capital continues to speak very complicated, but the spindle and magazine , air compressor and a variety of tool holders and other costs are added , so the difference on a piece of equipment is more than 10 million yuan, and the programming staff to sober. Otherwise, it will attack the tragedy , the results have definitely increased a lot. How on efficiency , on less than one , two hundred artifacts consumption of the same species, try not to use the processing center , the efficiency is too low.
What is a good way to improve efficiency , do not use the knife, and would not constitute a human ATC error , just fractions of automatic knife , knife up an installation, a button , the machine tool automatic tool , direct processing, error 0.001 - within .0003 μm, and automatically change over time come , will not slow down efficiency. If it is a processing center nor automatic tool to install the machine and not with magazines , but the automatic tool machine compared to the latter theory, the efficiency is much higher than the former. Please pay attention to the sound of the knife automatic best price brands such as (Marposs) but about $ 10,000 and can be damaged too , so analysis of international mold a lot of force on the rest , as well as small quantities of industrial parts machining If the full value of thinking about the use of funds should not be used machining center equipment must , in addition, the international magazine of manufacturers are still many fundamental results. Exports are also quite expensive. (BT40 10 knife library will not be less than 10 million yuan).
Five high-speed cutting equipment views
Savvy processors will feature a large number of time thinking about the loss of human effort to prepare the machine and personnel posed , we always remember without prompting them in this regard. And we have to do is how to go from the machining time to give them a higher processing efficiency, and reduce their intake can be polished effort. Even zero polished. Debut high-speed cutting equipment is to allow processors slam the heart of things . Let us not think its expensive cost ( about 1.5 million ) , a single from the use of speaking I think it must be the old saying goes : it has some people concerned is a savory meat for others in terms of a highly toxic poison Japanese and European efforts to publicize the benefits of high-speed cutting and makes the use of their equipment. Of course, some NA approach. Practical experience in CNC machine tool industry eight years to tell me their cost should be around 60-70 thousand. The profit margin is so high let me see their essence. Gross international CNC machine tools should be ( 30-40 % ) between . This is reasonable , upright profits. If you prefer to maintain their high profits , I do not want to work in the opposite can earn more money. But also to think about the aftermarket performance and so on. I can not believe that they can handle all the performance results in 1-2 days . Because of our existing technology can not be completed "Solid fax ."