Machinery industry – Page 32 – CNC Machining & Turning, Milling, Metal parts

Advantages of CNC machining

CNC computer gongs processing refers to the processing with CNC tools.

1. The accuracy of the work is relatively high, and the quality of the processed products is guaranteed.

2. Even if there are multiple coordinates, there is no need to worry, because it can realize the linkage between the coordinates, and can process parts with complex geometry structure.

3. It is necessary to replace the processed parts, but only need to change the relevant data to realize the work and simplify the work

4. Because the computer gong is automatic, it can reduce the labor force and increase the productivity.

The use of integrated electronic components, chips and VLSI is the guarantee of the reliability of large-scale mechanical parts processing equipment. Many functions are realized by software, which reduces the number of hardware. Rich fault diagnosis and protection functions (mostly realized by software) can reduce the frequency of system failure and the repair time after failure.

2. Computer gong processing, easy to use and maintain

Easy to operate: users only need to follow the menu to operate correctly. Convenient programming: it has a variety of programming functions, automatic program verification and simulation functions. Convenient maintenance and repair: some routine maintenance work is carried out automatically (lubrication, regular inspection of key components, etc.), and the self diagnosis function of CNC machine tool can quickly realize accurate fault location.

3. Computer gong processing is easy to realize mechatronics

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

4. Flexibility and versatility of gongs

Most of the functions of mechanical parts processing device are realized by software, and the software and hardware adopt modular structure, which makes the modification and expansion of system functions more flexible. The basic configuration of mechanical parts processing device is universal. Different CNC machine tools only configure corresponding specific function modules to achieve specific control functions.

Daily maintenance of mould

The mold is generally stored in the warehouse until the next production cycle. However, some processing enterprises do not pay enough attention to the mold preservation. Dongguan mold processing makes the mold rust and surface finish decline during the storage period, resulting in the decline of product quality and high rejection rate. Some molds are even difficult to reuse, so a large amount of funds need to be invested to replace new molds, resulting in great waste. The data show that use and maintenance account for 15% – 20% of the factors affecting the service life of molds. The service life of injection moulds can reach 800000 times in general, and some well maintained moulds abroad can even be extended by 2-3 times. However, due to the neglect of maintenance in domestic enterprises, the service life of injection mold is relatively short, which is only equivalent to 1 / 5 ~ 1 / 3 of that in foreign countries. Due to the short service life of die, steel processing time and energy waste, as well as the impact on product quality, the loss of billions of yuan per year.

Regular maintenance can keep the injection mold in good condition. After the new die is tested, no matter whether it is qualified or not, the stress relief tempering should be carried out before the mold is cooled to room temperature. When the new die is used to 1 / 6 ~ 1 / 8 of its design life, i.e., 10000 times of aluminum die casting, 5000 times of magnesium and zinc die casting, and 800 times of copper die casting, the mold cavity and die base should be tempered at 450-480 ℃, and the cavity should be polished and nitrided to eliminate the internal stress and slight cracks on the surface of the cavity. After that, the same maintenance should be carried out every 12000-15000 mould times. When the mould is used for 50000 times, it can be maintained every 25000 ~ 30000 mould times.

Therefore, the maintenance of injection mold is very important. The following editor will tell you the specific methods of mold maintenance:

1. First of all, the processing enterprise should provide a resume card for each pair of molds, recording and counting the use, care (lubrication, cleaning, rust prevention) and damage in detail, so as to find out which parts and components have been damaged, and the degree of wear, so as to provide information for finding and solving problems, as well as the molding process parameters and product materials of the mold, so as to shorten the trial run time of the mold Improve production efficiency. 2. The processing enterprise should test the performance of the injection molding machine and mold under normal operation, and measure the size of the final molded plastic parts. Through this information, the existing state of the mold can be determined, and the damage of the cavity, core, cooling system and parting surface can be found. According to the information provided by the plastic parts, the damage status of the mold and the maintenance measures can be judged. Dongguan Mechanical parts processing 3. To focus on tracking inspection of several important parts of the mold: the function of ejecting and guiding components is to ensure the opening and closing movement of the mold and the ejection of the plastic part. If any part of the mold is stuck due to damage, it will lead to production stop. Therefore, it is necessary to keep the lubrication of the mold ejector pin and guide pillar (the most suitable lubricant should be selected), and regularly check whether the ejector pin and guide pillar are in good condition Once deformation and surface damage are found, they should be replaced in time; after completing a production cycle, the working surface, moving and guiding parts of the mold should be coated with professional antirust oil, especially the protection of the elastic strength of the bearing parts of the mold with gear and rack and the spring mold, so as to ensure that they are always in the best working state; with the continuous production time, the cooling channel It is easy to deposit scale, rust, sludge and algae, which makes the cross-section of cooling channel smaller and the cooling channel narrow, which greatly reduces the heat exchange rate between the coolant and the mold and increases the production cost of the enterprise. Therefore, attention should be paid to the cleaning of the flow channel. For the hot runner mold, the maintenance of heating and control system is helpful to prevent the occurrence of production failure, so it is particularly important. Computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, therefore, after the end of each production cycle, ohmmeter should be used to measure the belt heater, rod heater, heating probe and thermocouple on the mold. If there is any damage, it should be replaced in time, and compared with the mold resume, and make records, so as to timely find out Problems, take countermeasures. 4. Pay attention to mold surface maintenance, it directly affects the surface quality of products, the focus is to prevent corrosion, therefore, it is particularly important to select a suitable, high-quality, professional anti rust oil. After the mold has completed the production task, different methods should be taken according to different injection molding to carefully remove the residual injection molding and other deposits in the mold with copper rod, copper wire and professional mold cleaning agent, and then air dry. It is forbidden to clean iron wire, steel bar and other hard objects to avoid scratching the surface. If there are rust spots caused by corrosive injection molding in CNC processing, grind and polish with a grinder, spray professional antirust oil, and then store the mold in a dry, cool and dust-free place.

Through the above four points to do a good job in the maintenance of the mold, can shorten the mold assembly, reduce production failure, make the production run smoothly, ensure product quality, reduce waste loss, and reduce the enterprise’s operating costs and fixed assets investment. At the beginning of the next production cycle, the enterprise can smoothly produce qualified products.

CNC punch has a lot of people do not know

There are a lot of things we don’t know about CNC punch: (1) there is no training for CNC punch in Toronto, such as computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing. I have consulted four public colleges, Chinese training schools and some foreign training schools, none of them. Therefore, the competition is relatively peaceful; (2) the concept of punch is very dangerous, because in China, punches often have accidents such as washing off fingers, but that is a manual punch.

There is no infrared protection. The first time I saw the imported CNC punch press was in an exhibition in China. It showed that the machine was processing a panda pattern sample. In fact, the CNC punch is very safe. This kind of punch is completely different from the one you imagine in China. In terms of safety, the operator is far away from the machine, just press a start button, and even stop button is not necessary At the same time, when the machine is running, the operator is far away from the machine, and the machine stops when the operator is operating, that is, the mobile person stops, the human motivation stops, the computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer Gong processing, it is impossible to impulse the hand; all the machine actions are controlled by the program, once the machine runs abnormally, it will only stop and give a message Warning information, there will be no other accidents; (3) Punch is a two-dimensional planar motion, it is easy to get started. In fact, it is a faster way for new immigrants to get employment, especially for those who are not specialized in mechanical technology. There is no need for three-dimensional imagination ability. Of course, if you have learned CNC milling machine, it is very easy to turn to learn punching machine. In addition, you do not need to be able to program. You only need to know how to operate Just do it. Learn setup at most, and it’s not difficult.

(4) It’s a shortcut to get out of the situation of pure work. Why do you say this? You have to learn to program in order to work independently when you are learning milling machine. But punching machine is not the same. You can set up. Computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing, as a special post, has a special person in programming What you have to do is to process the parts in the program. Conversely, once you become a programmer, you don’t have to work in the workshop. You go to office and go to the technical department to program. It is no longer a labor. If you work hard, you can achieve this process in one year, because what you have to do is to learn the sheet metal design function of Pro Engineer Software Can you be a programmer of milling machine in the same time? Your milling machine programming level is the highest, and you have to work in the workshop. I am not slandering milling machine, but just shows that milling machine is more complex, punch is more suitable for new immigration.

(5) There are a wide range of employment. There must be CNC push press and CNC brake press machines in factories with turret punch machines. Quite a few companies will also have laser cutting system (CNC). Some companies have fully automatic punch machines such as Amada, all of which are CNC, Computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing, so there are many job opportunities

History of metal manufacturing

Hardware manufacturing industry has a long history. Exploring the source of its development can almost keep pace with the history of China. Computer gong processing after thousands of years of history of ups and downs, to now, all aspects have gradually matured and improved. Dongguan high-speed computer gong processing, but China’s hardware enterprises are mainly small and medium-sized enterprises. In recent years, under the fierce competition at home and abroad, some small and medium-sized enterprises are facing various difficulties, struggling in the edge of life and death.

Change is the only way out.

Many hardware manufacturing enterprises have recognized this problem and began to make changes, but they often treat the symptoms rather than the root causes, ignoring the most important things. In order to find a way out, some enterprises began to learn the advanced western marketing methods and conduct in-depth research on the market, such as computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing, selling through the Internet, or changing to service-oriented, making the slogan “customer is God, service is life”, or thinking “channel” Tao is the king. “I think the ultimate goal of producing products is to sell them.

Some small and medium-sized hardware enterprises with low technology content and labor-intensive attribute their deficiencies to the lack of advanced machines. Dongguan mold processing thinks that the reason why they can’t be bigger and stronger is because of the lack of capital and strength, and they can not increase the investment in science and technology independently. They can only cooperate with a number of small enterprises or be absorbed by large enterprises to strengthen their strength. Finally, they lose themselves on the stage of hardware and gradually lose themselves Die out.

No doubt, these changes in technology and sales have stimulated the traditional hardware products, making them glow with new vitality. Computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing, but most of these improvements are temporary, and have changed vigorously for more than ten years, but the difficulties faced by China’s hardware manufacturing industry have never been solved Fundamentally changed, most of the small and medium-sized hardware enterprises are still in the world market, unable to get steady development.

If we stop to look at the manufacturing power – “Germany”, we will find that in fact, we are not too many small and medium-sized enterprises, but neglect the most basic thing – a heart that wants to make high-quality products. Dongguan Machinery parts processing when an enterprise to put a stable mind, no longer for profit and production, do not rely on low-cost labor, do not blindly invest money for equipment, machinery and technology is only icing on the cake, CNC processing brand and success is only a natural thing. Germany’s manufacturing industry is well-known in the world, and some small companies can also become big brands, thus being sought after by the world

Development of precision casting

Compared with foreign casting machine tool industry, computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, China’s casting machine tool industry is obviously backward in the production process level, which makes it has obvious deficiencies in the technical level and running speed of the core operating parts, the accuracy of finished products and the reliability of machine tools. It can be seen that the development of China’s foundry machine tool industry must start to actively seek new direction and concept.

Revolution becomes a new driving force in the field of casting machine tools

In order to meet the needs of industrial structure adjustment and low-carbon economy development and realize the scientific development of precision casting industry, the following work should be focused on:

1. To cultivate strategic emerging industries and modern production and service industries, so as to adapt to the transformation requirements of downstream areas. Computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing provide support for the stable and rapid development of China’s equipment production industry. Dongguan CNC processing provides the basis for the establishment of a modern casting industry system.

2. The network system of education and training in the field of precision casting has been constructed comprehensively. Various forms of school running can effectively cover the whole field of foundry education and training.

3. To help enterprises effectively use WTO and other international rules to deal with trade disputes such as anti-dumping and strive for the right of discourse in the international trade system.

4. Adhering to the principle of “go out, please come in”. On the basis of well running the high-level forum on China’s precision casting industry and the high-level forum on casting industry in mainland China, high-speed computer gongs processing in Dongguan, mold processing in Dongguan, mechanical parts processing in Dongguan, CNC processing, etc., will further improve the high-level forum of Asian casting industry and the high-level forum of BRICs casting industry, and actively participate in the world foundry industry Layer forum.

5. Substantive participation in international standardization work. During the 12th Five Year Plan period, we will submit several draft International Foundry specifications to the international standardization organization

Summary of ISO knowledge in CNC machining

Summary of ISO knowledge

ISO9000 has several main characteristics, which can be summarized as “one essence and one center, two basic points; three characteristics, computer gong processing | Dongguan computer gong processing | Shenzhen computer gong processing | mechanical parts processing | Guangzhou computer gong processing | 4 general affairs and 4 products, 5 modules, 6 documents and 8 principles”. I simplify it to “112 344 568”

① One essence: speaking, writing and doing are consistent;

② One center: customer centered

③ Two basic points: customer satisfaction and continuous improvement

④ Three characteristics: suitability, sufficiency and effectiveness.

⑤ Four things: everyone is responsible for everything, there are rules to follow for everything, there is evidence for everything, and there is someone to supervise everything.

⑥ Four products: service, software, hardware and process materials.

⑦ Five modules: (1 total process, 4 major processes)

Quality management system; management responsibility; resource management; product realization; measurement, analysis and improvement

⑧ Six documents: the six procedure documents clearly put forward by ISO9000:2000 standard must be formulated

Document control procedures, quality record management procedures, internal audit procedures, computer gong processing | Dongguan computer gongs processing | Shenzhen computer gongs processing | mechanical parts processing | Guangzhou computer gongs processing | unqualified products control procedures, corrective measures control procedures, preventive measures control procedures.

⑨ Eight principles: customer centered, leadership role, CNC computer gong processing in Dongguan

Staff participation, process method, system management, continuous improvement, fact based, mutually beneficial relationship with suppliers.

10. Seven techniques of IE

① Program analysis;

② Time analysis;

③ Movement analysis

④ Pipeline analysis;

⑤ Dynamic analysis of crops;

⑥ Material analysis;

⑦ Environmental analysis

11. Types of common surface treatments:

① Grinding (polishing)

② Electroplating

③ Spraying / baking

④ Heat treatment

⑤ PVD (vacuum coating)

⑥ Sandblasting

⑦ Vehicle pattern

⑧ Scratch (wire drawing)

⑨ Oxidation (coloring)

⑩ Matte

Making black

(12) trimming

The flower of the flower`

12. Ten steps to RoHS compliance

The first step is to determine the correlation between enterprise products and ROHS directive. (if it is determined that the products produced by the enterprise are within the jurisdiction of RoHS, then go to the second step

Step 2: set up a company wide “compliance” team within the enterprise.

Step 3: establish RoHS compliance statement.

Step 4: establish the implementation plan of RoHS compliance within the enterprise.

The fifth step: evaluate the relevance between the enterprise’s supply chain and ROHS directive.

What’s the reason why the hardware factory didn’t order

1. Weak technical foundation

Most of the hardware processing plants without order information have no technical ability to talk about. They only produce and process some simple metal stamping parts, such as sheet metal bending, blanking, hole opening, etc.

2. The working capacity of supporting facilities is limited

Now there is no way to see the simple metal stamping parts in the sales market. The common products are made by the combination of stamping die, welding, riveting, machining and other processing technologies, and the metal surface treatment must be carried out. If there is no relevant mutual cooperation, only do stamping die, the sales market has been greatly limited!

3. Single marketing channel

There are a lot of small and medium-sized hardware processing factories, and there are only a few or even no professional salesmen in the market. They are all complacent, just a lot of old customers. This makes their own processing plant in a very big risk

4. Lack of brand effect

Nowadays, no matter what kind of goods, the added value is all famous brands of commodities. If a company produces and processes small spare parts for others and does not have its own famous brand, it will not be able to stand on the sales market in the future.

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How to deal with the hardware factory without a single?

1. First you can ensure the quality of the goods, and then the price should be valid.

2. There must be a certain way. That is to say, with your long-term purchase of customers, such as decoration companies, hardware stores, kitchen cabinet stores, such as the boss or logistics management, in a word, it works. Invite them to dinner, give gifts and red envelopes on time, and have a good relationship with them, so as to ensure the basic operation of the factory.

3. Always observe the changes in the sales market, accurately identify the sales market, and ensure that their products can not fall behind the sales market or be too excellent.

Some key points to improve the quality of CNC machining workpiece

1. Reasonable CNC machining tools

The smooth knife for processing steel and copper should be strictly distinguished and used, and the allowance of the smooth knife should be reasonable, so that the smoothness of the workpiece and the service life of the cutter will be better.

2. Before CNC machining, check whether the tool swings within the allowable tolerance range with the calibration table. Before machining, the tool head and locking nozzle can be installed only after being blown clean with the air gun or wiped clean with a cloth. Too dirty will have a certain impact on the accuracy and quality of the workpiece.

3. When clamping, pay attention to see whether the name and model of CNC machining workpiece and program sheet are the same, whether the material size matches, whether the clamping height is high enough, and use calipers to count.

4. The CNC processing program sheet shall be consistent with the direction of the reference angle indicated by the die, and then check whether the upper 3D drawing is correct, especially for the workpieces that have been drilled for water transportation. It is necessary to see whether the 3ddrawing is consistent with the water transportation of the upper workpieces. If it is unclear, it is necessary to timely feed back to the programmer or find a fitter to align the lower 2D drawing to see whether the 2D and 3D reference angles are consistent.

5. The program list of CNC processing documents shall be standardized, including die number, name, program name, processing content, tool size, feed amount, especially the safe length of tool clamping, reserved allowance of each program, and smooth tool. The place where the R-plane and plane should be connected shall be indicated on the program list. The operator shall increase the processing speed by 0.02-0.05mm, and first process several tools Stop to see if it’s connected, touch it with your hand to see if it’s up, and if it’s not, lower the gong.

6. Before processing, understand the contents of CNC processing program list. The program list must have 2D or 3D drawing, and mark “x length, y width, Z height” six side data,

If there is a plane, the “Z” value shall be marked. It is convenient for the operator to check whether the data is correct after machining. If there is a tolerance, the tolerance data shall be marked.

7. The machining speed of the machine tool shall be strictly controlled by the operator. The rotation speed of F-speed and s-axis shall be reasonably adjusted to each other. When F-speed is fast, it shall be faster than s-axis, and the feed speed in different areas shall be adjusted. After processing, the machine can be removed only after the quality is checked and no problem is found, and one-time processing is required to be perfect.

Speed control of CNC machining

CNC machining in China is developing towards high speed and high efficiency. This includes the speed control of CNC machining in China. If we want to make full use of the effective working stroke, we must make the moving parts accelerate to the high-speed stroke in a very short time, and stop at the instant in the high-speed stroke. This is why it is necessary to control the speed of CNC machining in Dongguan.

According to the open control idea, we propose a method of automatic acceleration and deceleration control for the movement of CNC machine tools according to any curve. This method will push the automatic acceleration and deceleration control from the traditional fixed mode to the new flexible mode, and explore a new way to effectively improve the dynamic performance of CNC machine tools.

1. Flexible acceleration and deceleration control

In Dongguan CNC machining, the system program directly realizes the specific automatic speed control function. In this way, it is necessary to change the acceleration and deceleration characteristics of the system or modify the numerical control program by adding and subtracting control, so ordinary users can not make the numerical control machine tool have the best acceleration and deceleration performance according to their own wishes. Therefore, our flexible acceleration and deceleration control method adopts the principle of database, divides acceleration and deceleration control into two parts: acceleration and deceleration description and implementation, and separates acceleration and deceleration description from system program. In the software of CNC system, a general control channel is designed, which has nothing to do with the content of acceleration and deceleration database.

2. Flexible automatic acceleration control

Set the acceleration curve, analytical curve and non analytical curve, and store them in the acceleration and deceleration curve library as a template in the form of a number table.

3. Flexible automatic deceleration control

As a sample, acceleration control is stored in acceleration and deceleration curve Library in the form of data table. Reasonable automatic acceleration and deceleration control is an important link to ensure the dynamic performance of CNC machine tools. Because of the lack of flexibility, the traditional automatic acceleration and deceleration control based on fixed curve is not easy to ensure that the acceleration and deceleration process is compatible with the performance of the machine tool, and it is difficult to achieve the best dynamic characteristics of the machine tool movement.

The importance of machining factory management

For the machining plant, no matter the scale, as long as it is an organization, it must be managed. Only in this way can we ensure the long-term development of enterprises. However, for small and medium-sized mechanical processing plants in China, most managers do not pay enough attention to scientific management. Therefore, there will be a variety of problems in machining, which will affect the future development. So, what problems should be paid attention to in strengthening the management of machining plants?

1. Standardization of factory management

Whether the factory implements standardized system management is one of the conditions to measure whether the factory management is competitive, efficient and sustainable. As the staff are changing, a set of mature management system should be established. No matter what the characteristics of the factory are, its basic management is unchanged, which needs to be determined by the system to form a consensus so that everyone can understand and abide by it.

Factory management is not standardized. In the long run, factory management is unstable, basically hovering at a low level, and it is difficult to reach a new level. Its common performance is that the factory system is not perfect, the task is often difficult to complete on time, the problem is difficult to find the reason, excuses and disputes occur from time to time. However, it is also necessary to pay attention to humanization, not just paper documents.

2. Factory performance, employee performance evaluation

If we can’t evaluate the performance of the factory effectively, it’s difficult to find out the key problems accurately, and it’s difficult to grasp the next step. Only use some incomplete data and experience or feeling to deal with the daily production tasks, the daily work of employees will become inefficient, low efficiency will only make a factory lack of core competitiveness!

A perfect employee performance evaluation system is mainly to affirm the achievements, promote the employees to have a positive attitude towards work, help to find and correct the existing deficiencies, and make a plan to correct within a time limit. Therefore, we can not only find talents, train reserve forces of machining plants, but also solve the general unreasonable phenomenon of “governing by inaction”.

Machining plant – knurled nuts

3. Professional people do professional things

The concept of “responsibility is greater than power” should be set up in the machining factory, and the working attitude should be put into practice. Employees should perform their duties and care about the development of the factory. Work hard and work together. To cultivate the development concept of employees, everyone should be enterprising. Instead of being a monk and banging a clock.

4. Production flexibility

Some factories shuffle and kick each other, but they don’t work at last. Simple things are extremely complicated. What else can we talk about in the case of work delay? In fact, many factories have not achieved satisfactory results in this regard. There are many reasons for this. The key is to release the centralized management system and give the responsible person enough management responsibility and rights.

Machining plant – stainless steel nuts

5. Professional talent management and factory development culture

Factory culture is accumulated by the joint efforts of all the people in a company, and it is the promotion of factory management accumulated by the factory for a long time. Good corporate culture is the core competitiveness of the factory, which is the soul of the factory. In particular, a manufacturing factory should have the spirit of research in technology, rather than a word that can’t be done when encountering difficulties. A good technician often helps the factory to expand the scope of business processing. With such a healthy development of internal environment, it is the basic element for the factory to be invincible to cultivate young employees for rapid growth and the factory to constantly cultivate high-quality reserve forces.