September 2020 – Page 39 – CNC Machining & Turning, Milling, Metal parts

What is the processing technology of aluminum alloy shell?

What is the processing technology of aluminum alloy shell? The following is a brief introduction:

1. Hydroforming technology

In recent years, high pressure forming is a new technology in the world. According to their structural characteristics, various connectors can be formed at one time by internal high pressure forming method, or profiles can be made by general extrusion method, and then the tube blank can be pressed into the die cavity by internal pressure and axial force feeding.

Because of its excellent formability and large design freedom, one hydroforming part can replace the one formed by welding several parts, so it can avoid the distortion and deformation caused by welding, and has high dimensional accuracy and mechanical properties. Its main advantages are: reducing weight and saving materials.

2. Precision die casting technology

The connecting parts of aluminum alloy body frame structure are mostly formed by casting, and some advanced high-precision casting methods, such as semi-solid die-casting, are mainly used. At present, there are two forming processes in semi-solid die casting: rheological forming and thixoforming. In the former, the liquid metal is fed into the specially designed injection molding machine barrel, and the screw device is applied to shear to cool it into semi-solid slurry, and then die-casting is carried out. In the latter, the solid metal particles or chips are fed into the screw injection forming machine, and the metal particles are transformed into slurry under the condition of heating and shearing, and then die-casting is formed.

At present, the semi-solid metal casting used in industry at home and abroad mainly refers to thixotropic casting, which is widely used in body frame structure. Thixotropic casting, as a precision forming method, has high strength after forming and can realize one-time forming of complex shapes. It can be used to mass produce all kinds of parts without cutting or little cutting, and reduce the number of parts.

What should be paid attention to when choosing aluminum profiles?

What should be paid attention to when choosing aluminum profiles? The following is a brief introduction:

1. Check the product factory certificate, pay attention to the date of production, specifications, technical conditions, enterprise name and production license number.

2. Carefully observe the surface condition of the product. The product should have bright color and good luster. There should be no obvious scratch, bubble and other defects on the surface.

3. Pay attention to the wall thickness of the products. The thickness of the door and window materials should not be less than 1.2mm.

4. Pay attention to the thickness of the product surface coating. The film thickness of anodic oxidation product is not less than 10 μ m, the film thickness of electrophoretic coating product is not less than 17 μ m, the coating thickness of powder spraying is not more than 40-120 μ m, and the coating thickness of fluorocarbon paint spraying product should be more than the second coating, not less than 30 μ M.

5. The users in coastal areas should choose electrophoretic coating profiles, powder spraying profiles or fluorocarbon spraying profiles with good corrosion resistance.

6. During routine maintenance, brush and other hard objects should not be used as cleaning tools. Soft cotton yarn and cotton cloth should be selected.

7. Water, detergent and soap can be used for cleaning, but no other organic matter can be used.

What does the enterprise need to make to comply with the precision CNC parts processing

In order to meet the needs of various enterprises, Shenzhen shengyuanda focuses on precision CNC parts processing, realizing the batch production of precision CNC parts processing for various enterprises. As a manufacturer of precision CNC parts for many years, shengyuanda is an all-round service company integrating R & D, production and sales.

It is necessary to do a good job in the machining of precision CNC parts, including technical requirements, personnel requirements, enterprise management and operation mode, whether innovation, whether to adapt to the fierce competition and other elements.

Precision CNC parts processing

In order to comply with the development of the times and the needs of customers, Shenzhen shengyuanda Hardware Products Co., Ltd. actively develops new technologies and strengthens reform and innovation. It also adopts foreign advanced technology and equipment, introduces new thinking marketing mode, and strives to make diversified products to meet the market demand. The company’s precision CNC parts processing is a scientific production line workshop, rigorous production process standards, to create more satisfactory CNC precision machining parts!

What does the enterprise need to make to comply with the precision CNC parts processing?

1、 Need to enhance the strength of the company, with updated technology and management philosophy.

2、 To scientific production, manufacturing more precise instruments for precision CNC parts processing, improve the production equipment, regular maintenance, to practice to find problems, and then improve and innovate. Reference, drilling machine, engraving machine, laser machine, and other advanced equipment for production.

3、 The quality of production should be passed and all processes should be strictly controlled. Strictly control the operation procedures at all levels to ensure the production of high-quality goods, make good use of professional technical personnel and equipment, complete various tasks and implement standards.

Do a good job in service demand, pre-sale and after-sales service, do a good job of tracking between customers and enterprises, any problems need to be communicated and coordinated by both sides, the company can provide better after-sales service guarantee, convenient for customers, without adding any trouble, which also reflects the urban operation philosophy.

CNC manufacturers talk about the matters needing attention in CNC aluminum processing

Some customers often ask what problems should be paid attention to when processing CNC aluminum parts, which is very familiar to Shenzhen shengyuanda Hardware Products Co., Ltd., which has rich experience. What is the specific content?

As we all know, aluminum alloy beam, frame aluminum profile and frame aluminum profile of general equipment need deep processing before they can be put into use. This process needs to go through sawing, drilling, tapping, milling and so on. Customers can choose machines according to the precision of aluminum parts and aluminum alloys.

Let’s learn about CNC machining

1. The speed of white steel knife should not be too fast. When the workpiece is too high, it should be sliced with different length of knife.

2. When taking wcut, if you can take finish, don’t take rough. When the shape of the light knife, first roughing, then polishing, when the workpiece is too high, first smooth the edge, then light the bottom.

3. After roughening with a big knife, use a small knife to remove the remaining material to ensure that the allowance is consistent. The plane should be processed with flat bottom cutter and less ball cutter, so as to reduce the processing time.

CNC aluminum parts processing

4. Set tolerance reasonably to balance machining accuracy and computer calculation time. The tolerance is set to 1 / 5 of the allowance for roughening and 0.01 for smooth knife.

5. The four corners of the calibration plane should be smooth. Try to take simple knife path, such as shape, groove, single side, less walking around the height. Do more procedures to reduce the time of empty knife. Think more and reduce the chance of making mistakes. Make more auxiliary lines and auxiliary surfaces to improve the processing condition.

6. Where the slope is an integer, use a slope cutter to process, such as pipe position. In order to avoid making a clear cutting tool in the previous or after machining.

7. Establish a sense of responsibility and check each parameter carefully to avoid rework. Diligent in learning, good at thinking, and continuous progress. When milling non flat surface, use ball cutter more, use less end knife, do not be afraid to connect knife; small knife angle cleaning, big knife finishing; don’t be afraid of patching, proper patching can improve the processing speed and beautify the processing effect.

The above seven items are the matters needing attention in the process of CNC aluminum parts processing summarized by Shenzhen shengyuanda Hardware Products Co., Ltd. We hope customers will pay more attention to avoid accidents and affect the normal operation of the equipment when they are put into use.

How to arrange CNC machining sequence of high precision aluminum parts

The production of hardware products is inseparable from CNC processing technology. The novices who are not familiar with the industry or are just beginning to know little about CNC processing technology. Shenzhen shengyuanda Hardware Products Co., Ltd. is committed to CNC processing of high-precision aluminum parts, which has strict requirements for processing procedures. How to reasonably arrange CNC processing sequence of high-precision aluminum parts in the operation of the author in this industry for many years What about it?

In the CNC processing workshop of aluminum parts, everyone has different working positions, but we must be familiar with and keep in mind the processing principles, such as the principle of first priority and then the secondary principle. What is the specific meaning?

Operators should first process the main working surface and assembly base surface of the parts, so as to find out the possible modern defects on the main surface of the blank as soon as possible. The secondary surface can be interleaved after the main machined surface is machined to a certain extent and before Zui final finishing.

Of course, there are certain rules in the processing of different aluminum parts, which need to follow the principle of surface first and then hole. The plane outline size of box and bracket parts is large, and the plane is generally processed first, and then the hole and other dimensions are processed. This arrangement of processing sequence, on the one hand, it is stable and reliable to use the processed plane for positioning; on the other hand, it is easy to process holes on the processed plane, and can improve the machining accuracy of holes, especially when drilling holes, the axis of holes is not easy to deviate.

Of course, the CNC machining process of high-precision aluminum parts should follow the principles of first coarse and then fine, first near and then far, and the principle of base surface first is not introduced here. In a word, after selecting CNC processing methods and dividing working procedures, the main content of the process route is to reasonably arrange these processing methods and the sequence of processing procedures. Only orderly processing can improve the processing quality and production efficiency of parts.

What clamping methods are used in CNC machining of aluminum frame

As an important link in CNC machining of aluminum frame, some novices only know a little about CNC machining. What Xiaobian wants to say is that the basic principle of clamping is horizontal length and vertical short. Next, senior operators will explain to you what are the lower clamping methods?

Splint clamping is specifically used to code the splint on the CNC processing table, and the workpiece is locked on the splint with screws. It is suitable for clamping with insufficient height, and can also be applied to workpieces with large processing force or general medium and large workpieces, and the effect will be good.

The clamping of cutting tools refers to that the diameter is more than 10 mm, and the clamping length is not less than 30 mm; when the diameter is less than 10 mm, the clamping length should not be less than 20 mm. The clamping of the tool should be firm to prevent the phenomenon of hitting the tool or directly inserting into the workpiece.

CNC machining of aluminum frame

The clamping height of vise should not be less than 10 mm. It is necessary to specify the clamping height and processing height when processing workpieces. The processing height should be about 5mm higher than the vise plane to ensure the firmness, so as not to damage the vice. The clamping height is related to the size of the workpiece. When the workpiece is large, the clamping height increases accordingly.

Code iron clamping is mainly used when the workpiece is large and the clamping height is not enough, and it is not allowed to lock the wire at the bottom. This kind of clamping needs to be clamped twice. First, the four corners should be coded, and then the other parts should be processed, and then the four sides should be coded to process the four corners. During the second clamping, do not let the workpiece loose, code first and then loosen. You can also code both sides and process the other side.

From the above several clamping methods, it is not difficult to find that the different processing methods are different. In the CNC machining process of aluminum frame, we need to select according to the specific workpiece.

Scheme of reducing surface damage of aluminum profile by CNC machining

Aluminum profile surface damage is a problem that many aluminum alloy CNC processing enterprises will encounter. How to prevent or reduce aluminum profile surface damage? As the surface damage of aluminum profiles will greatly reduce the production rate of aluminum profiles and increase the production costs of many enterprises, we find that this problem has become a hot topic for most enterprises.

In order to solve the problem of surface damage of aluminum profiles, we must find out the causes and find solutions. What causes the surface damage of aluminum profile during CNC machining? Let’s talk about the human factors and the reasons for the CNC processing equipment of aluminum alloy.

Human factors mainly refer to the damage caused by some unfamiliar operators dragging profiles on the pendulum bed. There is also in the process of transportation, the improper placement of aluminum profiles, making the profile friction or extrusion between the formation of damage.

If the damage is caused by processing equipment, it is not ruled out that the mold cavity or work with dust and debris, so that the hardness of the working belt is low, causing aluminum profile scratch in the extrusion process.

If there are aluminum chips in the CNC machining track or swing table, the aluminum profile surface may be scratched and the yield will be affected.

In short, there are many factors that affect the surface scratch of aluminum profile, so how should we deal with it?

For the damage caused by human factors, we should strengthen the management of personnel, aluminum profiles need to be handled with care to avoid random dragging phenomenon. For the problems in the processing process, the author suggests that we regularly check the CNC machining track and swing table of aluminum alloy, and remove the impurities and aluminum chips on them. When placing, there should be a gap in the middle and lay more felt. Prevent collision and friction

How much does computer gong process cost an hour?

What is computer gong processing? At first glance, many people will feel very confused, what is a computer gong? What is computer gong processing used for? The layman must know nothing about this. In fact, computer gongs are familiar with CNC milling machines. Computer gongs are just the name of Hong Kong. Later, they were introduced into the Pearl River Delta of the mainland and were known by people.

Computer gongs processing is the so-called machining center, also known as CNC or CNC machine tools, is an automatic machine tool with program control system. Through its own control system, the program with control code or other symbol instructions can be processed logically. In this process, decoding is carried out, and finally the machine tool can operate and process parts.

How much does computer gong process cost an hour?

If the price of the gongs is not very high, it will not be very expensive to process the parts in different areas.

For example, in Shenzhen, using vertical computer gongs to process Cr12MoV specifications, 220 × 190 × 86 two curved surface processing depth less than 1 mm, the material of the following parts is about 60-100 yuan / hour.

How to judge whether the aluminum profile processed by CNC for aluminum frame is qualified or not

As we all know, the quality of aluminum profiles sold in the aluminum profile market is uneven, resulting in many unqualified aluminum profiles in the market. Some bad merchants, in order to seek profits at all costs, led to the aluminum profile market sales chaos, consumers do not know how to judge whether the aluminum profile is qualified.

Formal and professional CNC processing manufacturers of aluminum frame will strictly select materials to ensure product quality, because only by improving the quality can they have good reputation. Naturally, there is no need to worry about marketing. So now the market situation, aluminum profile unqualified performance in what aspects?

In order to reduce the thickness of the aluminum oxide film, the thickness of the oxide film is not qualified, resulting in the reduction of the corrosion resistance of the aluminum film. The film thickness of aluminum profile processed by CNC should not be less than 10 μ M.

CNC machining of aluminum frame

Shortening the sealing time will result in poor sealing, which will affect the corrosion resistance and pollution resistance of aluminum profiles.

The reason for the disqualification of form and position tolerance is that the extrusion press is too old, or the CNC processing equipment of aluminum frame is relatively outdated, which will lead to the poor cooperation between aluminum profile and parts, and even worse, it can not be used.

The manufacturers familiar with CNC processing of aluminum frame all know that the thinner the wall thickness of aluminum profile, the lower the cost. The wall thickness of qualified profile needs to be measured with caliper, which can not exceed or be lower than the tolerance range, which is the so-called unqualified wall thickness.

If the products processed by CNC aluminum frame are unqualified, it will seriously affect the interests of the company. Don’t say that any unqualified products can be sold. From a long-term point of view, this is harmful to others and not beneficial to oneself. If aluminum frame CNC processing enterprises want to develop, they must guarantee the quality of products and do a good job in after-sales service.

What are the advantages and disadvantages of CNC machining

Many people have heard of CNC lathe and CNC technology, but they don’t know about CNC machining of aluminum alloy. What does CNC machining mean?

In fact, CNC machining of aluminum alloy is a method to control the movement and processing process of machine tool by using digital information. The machine tool that uses numerical control technology to implement machining control, or machine tool equipped with numerical control system, is called numerical control (NC) machine tool.

With the continuous progress of science and technology, the development of modern CNC machining technology has tended to be high-speed, high-precision, high reliability, multi-function, composite, intelligent. This processing technology has been widely used in various fields. What are the advantages and disadvantages of CNC machining of aluminum alloy? The author takes you to analyze it together!

CNC machining of aluminum alloy

First to understand the shortcomings of this processing technology, in fact, the machine tool equipment is expensive, requiring maintenance personnel to have a high level.

Compared with the disadvantages of CNC machining of aluminum alloy, this processing method shows more advantages of its own, and also reflects its own value in major industries. Specific advantages:

① It can machine complex surface which is difficult to process by conventional method, and even can process some parts which cannot be observed.

② The machining quality is stable, the machining precision is high, and the repetition precision is high, which can meet the processing requirements of aircraft.

③ In the case of multi variety and small batch production, the production efficiency is higher, the time of production preparation, machine tool adjustment and process inspection can be reduced, and the cutting time is reduced due to the use of the best cutting amount.

④ A large number of tooling is reduced, and complex tooling is not needed to process parts with complex shapes. If you want to change the shape and size of parts, you only need to modify the part processing program, which is suitable for the development and modification of new products.

On the whole, the emergence of CNC processing of aluminum alloy brings great convenience to our life, and also improves the production efficiency of various industries.