Category Archive News

Bychengcg

Is Internet marketing the way out for computer gong processing

In recent years, the machining center is becoming more and more powerful. Among all kinds of imported CNC metal cutting machine tools, the machining center has become the most important import product, and its quantity and amount account for one third of the imported CNC metal cutting machine tools. Its rapid growth rate reflects the great demand for this product in our country.

The situation that most of the domestic demand processing centers depend on foreign imports has not fundamentally changed, and the domestic market share is still low, about 27%. The main reason for the low market share of domestic products is that there are many gaps in product level, delivery time, quality and reliability compared with foreign similar products. So the products we import mainly come from Japan, South Korea and Taiwan. In the face of these foreign countries, we use CNC machine tools, flexible manufacturing cells and flexible manufacturing systems to achieve large-scale production. Relatively speaking, foreign products have shorter delivery time and better quality stability. Due to the small production scale of domestic popular vertical machining center, the annual output of most enterprises is about hundreds, and individual enterprises can reach about 500. There is a gap between domestic and foreign similar products in terms of delivery time and quality, and the price advantage is not big, so they lose the market in the competition.

The Internet is closely related to our life now. We will use the Internet for many things, especially now that many young people are staying at home and almost do not go out. We call this kind of people “otaku men and otaku women”. From the perspective of the general quadrant of society, we know that the Internet has almost completely occupied our life. Now that the Internet has become the mainstream of our life, we can see that the Internet has become the mainstream of our life Network is so popular, so many of our enterprises think of doing business on the Internet, which is what we call network marketing. Many enterprise owners will do network marketing now, so as to eliminate the traditional way of sales. Network marketing can make you worry and labor-saving, and also earn an apology. Why not? So if our machining center wants to develop better, the network must be a breakthrough.

Machining center machine can be said to be the mechanical equipment used in numerical control, and this equipment is really the same as the name of this equipment. It is the application center control system of mechanical equipment, which plays a great role in the application of mechanical equipment, and we also play a great role in the application of this equipment.

Now many enterprises are doing this processing center, the market competitiveness is very strong, and generally are small and medium-sized enterprises to do, their products and this approach are roughly the same, so the competitiveness between peers will be more powerful, so many manufacturers change to price this piece of sales, peers have reduced the price, but for a long time this is not the case What kind of sales method is still not good, we still need to change the sales method. In the current situation, e-commerce is the only way out for enterprises. Compared with the cost of traditional exhibitions, magazines, newspapers and TV promotion, the cost of e-commerce is nothing.

Bychengcg

New energy development

In China, the amount of conventional energy resources is only 60% of the world average level. In order to meet the growing energy demand, it is necessary to accelerate the development and utilization of new energy. At present, the 9% share of new energy in the energy structure is relatively low compared with the developed countries in the world, and there is still a lot of room for development.

Although the latest statistics of 2008 have not been released yet, the proportion of China’s new energy production in the overall energy structure will exceed 9% based on the data from various aspects, especially the growth rate of China’s new energy production and consumption in the past 10 years.

2008 is an extraordinary year for China’s energy work. Affected by the changes of the world macro-economic situation and natural disasters, the supply and demand of energy has experienced a roller coaster like operation from “tight supply” at the beginning of the year to “demand slowing down” at the end of the year. Authoritative experts pointed out that the easing of the tense situation of energy supply and demand does not mean that China’s energy demand has dropped significantly, nor does it mean that China’s energy supply can achieve absolute self-sufficiency. Therefore, the task of developing new energy is still urgent. Compared with the level of developed countries, 9% of new energy in China is still at a relatively low level.

In 2007, China produced 2.35 billion tons of standard coal, of which coal accounted for 76.6%, oil accounted for 11.3%, natural gas accounted for 3.9%, and other unconventional energy accounted for 8.2%; while the total energy consumption in this year was 2.66 billion tons of standard coal, including 69.5% of coal, 19.7% of oil, 3.5% of natural gas and 7.3% of unconventional energy. In terms of total amount, there is still a gap in energy consumption in China. From the structural analysis, in China’s energy structure, the dominant position of coal has not changed. Although the development speed of new energy is fast, its proportion is still too small.

China has a long way to go in developing new energy, whether in terms of structure or total demand. First of all, the development of new energy is an effective guarantee to maintain rapid economic growth. From 2003 to 2008, the average annual growth rate of China’s GDP is close to 10%. In order to maintain the stable and sustainable development of economy, we must have strong energy guarantee. Throughout China’s resource reserves, the total amount is large and the per capita share is small, so it is difficult to form a sustainable support only relying on traditional energy.

Secondly, the development of new energy is an effective way to alleviate environmental pressure. Compared with traditional energy, new energy has the characteristics of less pollution and high efficiency. Vigorously developing new energy will help to reduce economic losses caused by environmental damage and achieve the goals set in the eleventh five year plan.

Third, the development of new energy is an effective means to ensure the safe supply of energy. Energy security is an important part of a country’s economic security and an important barrier to ensure the independent and healthy development of a country’s economy. At present, China has to import a part of its oil every year, and its dependence on foreign countries is relatively high. To ensure the safe supply of energy, we must adhere to the diversified strategy, and vigorously developing new energy is the concrete embodiment of this strategy.

Fourth, the development of new energy is a powerful weapon to solve the dilemma of unbalanced regional development in China. There is a big gap among regions in China, which is unfavorable to the sustainable development of economy and society. The development of new energy in the vast western regions and remote rural areas not only improves people’s livelihood, but also promotes economic development.

Fifth, it is feasible to develop new energy. With the improvement of technical level, the cost of new energy development has dropped sharply, and the cost of some new energy has been close to or even lower than that of conventional energy.

The reporter interviewed the national energy administration and relevant people in the industry. The unanimous judgment is that the development trend of China’s new energy will, on the whole, maintain a sustained and rapid development momentum and have a bright future.

From the perspective of policy environment, the recently concluded energy work conference has determined the work direction with the theme of structural transformation, which indicates the arrival of a new era of new energy industry. Both the promulgation of new energy and renewable energy planning and the implementation of the new energy law in the future have brought unprecedented opportunities for the development of new energy.

From the perspective of investment, international capital is optimistic. Even in the context of the international financial crisis, investment in the field of new energy will still become the hot spot of capital pursuit. Under the influence of policy guidance, domestic capital will follow suit one after another. The continuous rise of new energy sector in A-share market is sufficient evidence.

From the perspective of the internal structure of new energy, the priority development direction in the future is still wind energy, solar energy and nuclear energy with high technology maturity and economic feasibility. Economic feasibility is an important bottleneck restricting the development of new energy, which will be solved gradually with the improvement of China’s technical level.

Bychengcg

Processing automobile parts with computer gong

With the development of society, gold casting technology has been greatly improved. In the production process, it also reduces the environmental pollution, improves the working environment, improves the production technology and level, which is of great help to the development of the casting industry, so as to promote the development of the automobile industry. The domestic and international markets have more and more stringent requirements on the quality and cost price of automobile forgings, such as draft angle, weight tolerance, size, machining allowance, etc., and the price is not ideal, but the batch is large. In order to meet the needs of the market, this paper analyzes the process and repeated practice, and finds an ideal process, which is of great significance to the production of similar products.

Introduction of products and determination of process plan

The arm body is a part used on the brake pump of a heavy vehicle, and the structure is shown in Fig. 1. There are several difficulties in forging: (1) the draft angle is small, only 3 ° outside and 5 ° inside, while the ejection device only has one place in the ∮ 62 hole; (2) the machining allowance is small, only boring and broaching are used for ∮ 62 and square groove of 23.2mm; (3) 10 – ∮ 6.2 * 5 these 10 nails are difficult to fill, and the location requirements are high, and the root fillet of the nails is r0.2, which makes the die wear faster and easy to bump and cause deformation in the production process.

Determination of process plan

In order to adapt to mass production and improve efficiency, we have determined the following processes: (intermediate frequency furnace) heating / (cross wedge rolling) / (25000kN hot die forging press) bending / pre forging / final forging / (3150kN double point press) punching / trimming / normalizing / shot peening / precision pressing. In the technological process, two pieces at a time are used for heating billet, the handle of the part is long and thin, and the blank making efficiency of single piece by free forging is low. The cross wedge rolling billet (as shown in Fig. 2) is adopted and cut into two pieces on the rolling mill at the same time. Because the cross section of the parts changes greatly, it takes two wedges to complete from ∮ 55 to ∮ 23, so it is difficult to process and repair the rolling die.

In addition to ensuring the size of the head and shank, it is more important to correct the position of the 10 nails, the fillet of the root and the bending of the handle. Therefore, two standard platens with 5 holes are used to ensure the position of nails and the root fillet, and improve the service life of forging die.

Key points of mould design and manufacture

Generally, the bending die design only considers that the shape of the extruded blank is consistent with that of the forging. Due to the large difference in the thickness between the big end and the handle of the arm body, the handle of the bending billet will be suspended when it is put into the pre forging die. During the pre forging, the transition between the handle and the big head will be folded. Due to the suspension of the handle of the bending billet, the metal flow in this part is too large.

Bychengcg

Advantages of CNC machine tools over ordinary machine tools

The advantages of CNC machine tools are as follows:

  1. Processing efficiency, saving processing time.
  2. Work intensity. After the workers have finished programming, they can go to drink tea after the first piece is qualified.
  3. Reduce the number of waste products. As long as the first piece is qualified, the processed parts will generally be qualified.
  4. High safety, the farther the workers are from the processing equipment, the lower the probability of accidents.

For effective metal cutting, machining materials, cutting tools and cutting conditions are the three main factors. These determine the processing time, tool life and machining quality. Cutting conditions must be selected reasonably for economical and efficient processing methods.

The three elements of cutting conditions: cutting speed, feed and cutting depth directly cause damage. With the increase of cutting speed, the point temperature will rise, resulting in mechanical, chemical and thermal wear. If the cutting speed is increased by 20%, the tool life will be reduced by 1 / 2.

Back feed conditions and tool wear are kept to a minimum. But feeding behind, cutting temperature rise, wear. It is less than the effect of cutting speed. Cutting depth has no effect on cutting speed and feed, small cutting depth, but cutting material in hardened layer will also affect tool life.

According to the user’s processing material, hardness, cutting conditions, material selection, feed and cutting depth, the cutting speed is used.

Based on the selection of the most suitable process conditions, these factors are selected. Regular life and stable wear are the most ideal conditions.

However, in practice, the selection of tool life and tool wear, through machining size, surface quality, noise reduction, heat and so on. Under certain processing conditions, it is necessary to study CNC machining according to the actual situation. Difficult to machine materials such as stainless steel, heat-resistant alloy, can use coolant or choose a good rigid blade.

Reasonable selection of cutting tools

1。 Rough rotation, should choose high strength, good durability knife, in order to meet the large car turning, feedback.

2。 The essence of automobile is to select high precision, durable and good cutting tools to ensure the machining accuracy.

3。 Reduce the conversion time and knife convenience, should try to use machine knife and machine clip blade.

Select fixture

1。 General fixture should be selected to clamp workpiece as much as possible, and special fixture should be avoided;

2。 The coincidence of parts positioning datum reduces the positioning error.

Determine the processing route

Machining path is the part of tool path and direction relative to each other in the process of exponential control.

1。 It should be able to meet the requirements of machining accuracy and surface roughness;

2。 Shorten the processing route as far as possible and reduce the idle travel time of the tool.

Bychengcg

Intelligent fault playback and fault simulation technology

Adaptive control technology of machining process: through monitoring the cutting force, power, current, voltage and other information of the spindle and feed motor in the process of machining, the traditional or modern algorithm is used to identify the force, wear and damage status of the cutting tool and the stability state of the machine tool, and adjust the processing parameters (spindle speed, feed speed) in real time according to these states In order to improve the machining accuracy, reduce the surface roughness and improve the safety of the equipment operation, the equipment is in the best operation state;

(2) Intelligent optimization and selection of processing parameters: the experience of process experts or technicians and the general and special laws of parts processing are used to construct the intelligent optimization and selector of processing parameters based on expert system or model. The optimized processing parameters can be obtained by using it, so as to improve the programming efficiency and processing level, and shorten the production preparation The purpose of time;

(3) Intelligent fault self diagnosis and self repair technology: according to the existing fault information, the application of modern intelligent methods to achieve rapid and accurate fault location;

(4) Intelligent fault playback and fault simulation technology: it can record all kinds of information of the system, replay and simulate all kinds of errors and accidents of CNC machine tools, so as to determine the causes of errors, find out solutions to problems, and accumulate production experience;

(5) Intelligent AC servo drive device: it can automatically identify the load and automatically adjust the parameters of the intelligent servo system, including intelligent Spindle AC drive device and intelligent feed servo device. The driving device can automatically identify the moment of inertia of the motor and load, and automatically optimize and adjust the parameters of the control system, so that the drive system can get the best operation;

(6) Intelligent 4m numerical control system: in the manufacturing process, the integration of processing and testing is an effective way to realize rapid manufacturing, rapid detection and rapid response. Measurement, modeling, manufacturing and machine operation (namely 4m) are integrated into one system to realize information sharing and promote measurement, modeling and addition Integration of tooling, clamping and operation.

  1. Open system

(1) Open to the future technology: because the software and hardware interfaces follow the recognized standard protocol, only a small amount of redesign and adjustment is needed, the new generation of general software and hardware resources may be adopted, absorbed and compatible by the existing system, which means that the development cost of the system will be greatly reduced, and the system performance and reliability will be continuously improved and will be in a long life cycle;

(2) Open to users’ special requirements: update products, expand functions, provide various combinations of hardware and software products to meet special application requirements;

(3) Establishment of numerical control standard: a new CNC system standard iso14649 (STEP-NC) is being researched and formulated internationally to provide a neutral mechanism independent of specific system, which can describe the unified data model of the whole product life cycle, so as to realize the standardization of product information in the whole manufacturing process and even in various industrial fields. The standardized programming language is not only convenient for users to use, but also reduces the labor consumption directly related to operation efficiency.

6-drive parallelization

Parallel motion machine tool overcomes the inherent defects of traditional machine tool series mechanism, such as high mass of moving parts, low system stiffness, tool can only feed along fixed guide rail, low degree of freedom of operation, and insufficient flexibility and mobility of equipment processing The length of the rod enables the platform supported by the bar system to obtain the corresponding degree of freedom movement, which can realize multi coordinate linkage NC machining, assembly and measurement functions, and can meet the processing of complex special parts. It has the advantages of high modularity, light weight and fast speed of modern robot.

As a new type of processing equipment, parallel machine tool has become an important research direction of current machine tool technology. It has been highly valued by the international machine tool industry. It is considered as “the most significant progress in the machine tool industry since the invention of numerical control technology” and “a new algebraic control processing equipment in the 21st century”.

  1. Extreme (large scale and miniaturization)

The development of national defense, aviation and aerospace and the large-scale of energy and other basic industrial equipment need the support of large-scale and good performance CNC machine tools. Ultra precision machining technology and micro nano technology are strategic technologies in the 21st century, and new manufacturing processes and equipment that can adapt to micro size and micro nano machining accuracy need to be developed. Therefore, the demand for micro machine tools, including micro cutting (turning, milling, grinding) machines, micro electro machining machines, micro laser machining machines and micro presses, is gradually increasing.

  1. Information exchange networking

For the enterprises facing fierce competition, it is very important to make CNC machine tools have bidirectional and high-speed network communication function, so as to ensure the smooth flow of information among various departments in the workshop. It can not only realize the sharing of network resources, but also realize the remote monitoring, control, training, teaching and management of CNC machine tools, but also realize the digital service of CNC equipment (remote diagnosis and maintenance of CNC machine tools, etc.). For example, Japan’s Mazak company has launched a new generation of processing center equipped with an external device called e-tower, including computers, mobile phones, external and internal cameras, which can realize the communication failure alarm of voice, graphics, video and text

Bychengcg

Computer gong processing and maintenance

The high integration electronic components, chips and VLSI are the guarantee of reliability for large-scale machining equipment. Many functions are implemented by software, which reduces the number of hardware. Rich fault diagnosis and protection functions (mostly implemented by software), can reduce the frequency of system fault occurrence and repair time after failure.

  1. Convenient for processing, using and maintaining computer gongs

Easy to operate: the user of computer gong processing can operate correctly only according to the prompt of menu. Programming convenience: it has many functions of programming, automatic verification of program and simulation. Maintenance and maintenance is convenient: some daily maintenance work is carried out automatically (lubrication, regular inspection of key parts, etc.), and the self diagnosis function of CNC machine tool can quickly realize the accurate fault location.

  1. Computer gong processing is easy to realize Mechatronics

The volume of control cabinet of numerical control system is small (the number of hardware is reduced by computer; the integration degree of electronic components is higher and higher, and the hardware is decreasing constantly), which makes it possible to combine it with machine tool physically, reduce the floor area and facilitate operation.

  1. The computer gong processing has flexibility and universality

The function of machining equipment of mechanical parts is mostly realized by software, and the software and hardware adopt modular structure, which makes the modification and expansion of system function more flexible. The basic configuration of the machining equipment is universal. Different CNC machines only have specific function modules to realize specific control functions.

  1. Computer gong processing has rich numerical control functions

Interpolation function: quadratic curve, spline, spatial surface interpolation

Compensation function: motion accuracy compensation, random error compensation, nonlinear error compensation, etc

Human machine dialogue function: dynamic and static tracking display of processing, advanced man-machine dialogue window

Bychengcg

Cutting conditions of computer gongs

According to the user’s processing material, hardness, cutting conditions, material selection, feed and cutting depth, the cutting speed is used.

Based on the selection of the most suitable process conditions, these factors are selected. Regular life and stable wear are the most ideal conditions.

However, in practice, the selection of tool life and tool wear, through machining size, surface quality, noise reduction, heat and so on. Under certain processing conditions, it is necessary to study CNC machining according to the actual situation. Difficult to machine materials such as stainless steel, heat-resistant alloy, can use coolant or choose a good rigid blade.

Reasonable selection of cutting tools

1。 Rough rotation, should choose high strength, good durability knife, in order to meet the large car turning, feedback.

2。 The essence of automobile is to select high precision, durable and good cutting tools to ensure the machining accuracy.

3。 Reduce the conversion time and knife convenience, should try to use machine knife and machine clip blade.

Select fixture

1。 General fixture should be selected to clamp workpiece as much as possible, and special fixture should be avoided;

2。 The coincidence of parts positioning datum reduces the positioning error.

Determine the processing route

Machining path is the part of tool path and direction relative to each other in the process of exponential control.

1。 It should be able to meet the requirements of machining accuracy and surface roughness;

2。 Shorten the processing route as far as possible and reduce the idle travel time of the tool.

Bychengcg

Development trend of five axis machining

The leading machine tool manufacturer is planning a machining center in 2018, which will be a universal five axis machining center. It will be able to automatically deliver materials to the output of finished products, rough and finish machining, hardening treatment, superfinishing, automatic detection and automatic calibration of five axis machining. The equipment will pay attention to environmental protection and energy conservation of five axis machining, It functions with the characteristics of the 21st century are absolutely indispensable. The equipment will exchange information with the outside world through the network and obtain the latest technological achievements. Human wisdom will be fully displayed in the high-tech product processing center.

The five axis machining center has a variety of structures, mainly used for impeller and blade processing. Five axis machining is also one of the key exhibits in each International Machine Tool Exhibition.

For example, five axis machining was held at the 11th China International Machine Tool Exhibition (CIMT 2009), demaji, Germany( DMG (dmg) Co., Ltd. is the supplier with the most varieties of five axis machining centers. There are a wide variety of machining centers on display, including multi axis machining centers (including two linkage of milling head and two linkage of worktable), five axis machining column moving type and worktable moving type, column and bed split type (duoblock) and column and bed casting

Bychengcg

Five axis machining talents

When it comes to five axis machining, this is a new technology machinery in the hardware industry, and there are few talents for five axis machining in China. For the five axis machining technology is also early introduced from other countries, a large domestic blank talent. Based on the basic salary of Shenzhen in 2018, an ordinary CNC master should have a salary of 6000 to 8000 a month. Then a master of five axis processing has at least 10000 to 12000 wages a month. Because the industry is short of Pan talents, the salary is more expensive than the general CNC master.

Bychengcg

Prospect of CNC processing industry

CNC is also called computer gong, cncch or CNC machine tool. In fact, it is a kind of name in Hong Kong. Later, it was introduced into the Pearl River Delta of the mainland. It is actually a CNC milling machine. In Guangzhou, Jiangsu, Zhejiang and Shanghai, there are people called “CNC machining center”. CNC, milling machine, CNC machining, CNC milling machine, etc. Today we will talk about the prospect of CNC processing industry.

As an industry widely used in the market for mold processing and production, with the development of market economy, the decline of demand and the increase of peer competition pressure, technological breakthrough or price war is urgent.

1、 From the technical reform, the future development center must make a breakthrough from the most basic technology, realize the multi-directional upgrading from the mechanical and operational aspects, and achieve the technical update of the industry. Only with unique technology can we better cope with the future competition.

2、 In terms of service improvement, the competition in the industry is not only in technology, but also in service. Service is the relationship. If the service is done well, customers will continue to choose cooperation. Therefore, in the limited time, we should improve the service in essence.