2020 – Page 60 – CNC Machining & Turning, Milling, Metal parts

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.

Modernization process of CNC machining center with aluminum cavity

With the rapid development of modernization, CNC machining of aluminum cavity is paid more and more attention. People gradually begin to change the traditional ideas. People put forward various new requirements on the surface performance and appearance of aluminum cavity CNC machining. For example, when large area electroplating is used on the related products of aluminum cavity CNC processing, because people do not like the color of light, like another color, so they develop a new type of aluminum cavity CNC machining Aluminum cavity CNC processing products.

The modernization process of aluminum cavity CNC machining is tortuous and long. We all know how important the CNC machining of aluminum cavity is for industrial production. With the development of modern science and technology, the equipment industry is moving towards the extreme manufacturing direction: on the one hand, the equipment is becoming more and more tall, on the other hand, the products processed are more and more sophisticated, the processing technology is also more and more complex, and the integration of production technology is also higher and higher.

CNC machining of aluminum plate with aluminum cavity

In order to meet the demand of future products, many enterprises in the industry have begun to replace the traditional CNC machining center with aluminum cavity CNC machining center. Different from the traditional CNC machining center, the aluminum cavity CNC machining center is generally divided into grades according to the number of shafts. Those below the three axis CNC machining center are low-grade, the three to five axis CNC machining center are medium and high-grade, and those above five axis CNC machining center are high-grade.

After years of development and generations of hard work, China’s aluminum cavity CNC machining center industry has made a major breakthrough in the production of traditional CNC machining center. At present, it has become the third largest production country of aluminum cavity CNC machining center in the world. This is the result of a strong country, which is the credit of all the people working in the front line and the hard work of everyone. We are worthy of being powerful and have strong technology, which has changed the modernization process of CNC machining center for aluminum cavity in China.

With the rapid development of the modernization process of CNC machining center for aluminum cavity, more and more mechanical manufacturing equipment are constantly changing to high-speed, high-precision, high-efficiency and high-intelligence, and the demand for high-speed CNC machine tools in various industries is increasing day by day. In the design and manufacture of high-speed CNC machine tools, CNC machining of aluminum cavity is particularly critical.

In CNC machining of aluminum cavity, selecting reasonable cutting parameters is the most economical and effective machining method. The operator should select the cutting speed according to the material to be processed, hardness, cutting state, material type, feed rate, cutting depth, etc. The most suitable processing conditions are selected on the basis of these factors. Regular and stable wear is the ideal condition for service life.

How to determine CNC processing route

Operation technicians need to make preparations when using CNC aluminum plate machining center. Of course, each operator has his own set of skills. Here, the author would like to say that both novice and experienced personnel should be prepared for use. What are the specific contents?

CNC machining of aluminum plate

The tool used in the inspection should be consistent with the specification allowed by the machine tool. The maximum tool length, maximum tool weight and total tool weight of CNC machining center for aluminum plate are determined.

Check whether the tool used is worn or damaged, sometimes it should be replaced immediately. Check for obstructions around machinery and control systems.

Some moving parts are lubricated with grease. Before working, check whether the machine tool has reached the time specified on the lubrication indicator plate, and supplement it in time.

Safety awareness must have, check whether the control system is closed. Whether the control switches are in good condition. Whether someone is in the mechanical danger area.

How does the operator determine the CNC processing route when using the aluminum plate CNC machining center? I would like to share with you:

CNC machining of aluminum plate

First of all, we need to understand what CNC processing route means? It refers to the path that the turning tool moves from the tool setting point (or the fixed origin of the machine tool) until it returns to the point and ends the processing program. It includes the path of cutting and the path of non cutting empty stroke such as cutting in and cutting out. In order to determine the CNC processing route, the following principles must be followed:

1. Shorten the processing time and reduce the processing time.

2. Ensure the accuracy and surface roughness of the workpiece to be processed.

3. For some repeated programs, subroutines should be used to simplify the workload of numerical calculation and the processing program.

In a word, in order to ensure the aluminum plate finish machining, we must do the preparatory work, and ensure that the aluminum plate CNC machining center processing route is correct.

How to prevent parts deformation in computer gong processing

As we all know, computer gongs processing is an automatic numerical control machinery, now many processing enterprises need this kind of mechanical equipment, but due to the fierce market competition, computer gongs processing chaos. The author suggests that before purchasing computer gong equipment, we must have a detailed understanding and investigation of the manufacturer.

Computer gong processing in the process of use will encounter some common faults, such as computer gongs can not return to zero, computer gongs positive and negative hard limit alarm, so what are the causes of these failures?

1、 Cause analysis of computer gong can not return to zero

1. The contact of the origin switch is stuck and cannot act; 2. The origin stop cannot hold the origin switch to the action position of the switch; 3. The water in the origin switch causes the contact of the switch to rust; 4. The line of the origin switch is disconnected or the input signal source is faulty; 5. The PLC input point is burnt out.

2、 Cause analysis of positive and negative hard limit alarm of computer gong

Computer gong processing under normal circumstances will not appear this alarm, but what is the cause of this situation?

1. The contact of the travel switch is pressed and stuck (over travel); 2. The travel switch is damaged; 3. The circuit of the travel switch is open circuit, short circuit and no signal source; 4. The limit block cannot hold the switch contact to the action position; 5. The PLC input point is burnt out.

Most of the time, due to the improper use of technical personnel, or work handover is not in place, computer gong processing will cause some problems, how should we prevent the deformation of parts in the process of computer gong processing?

Computer gong processing

In order to meet the requirements of ultra-high speed machining, the combination of spindle motor and machine tool spindle is adopted in computer gong machining, which realizes the integration of variable frequency motor and machine tool spindle. The bearing of spindle motor is in the form of magnetic levitation bearing, liquid dynamic and static pressure bearing or ceramic rolling bearing. Deformation often occurs in the process of processing, how to prevent it?

1、 In order to reduce the influence of cutting force and cutting heat, the deformation caused by rough machining can be corrected in finish machining.

2、 To reduce the influence of clamping force, the following measures should be taken to reduce the influence of clamping force:

1. When using radial clamping, the clamping force should not be concentrated on a certain radial section of the workpiece, and the operator should make it distributed over a large area to reduce the clamping force on the unit area of the workpiece.

2. The position of clamping force should be selected at the part with strong rigidity to improve the deformation of thin-walled parts under the action of clamping force.

3. The direction of clamping force is changed from radial clamping to axial clamping.

4. As we all know, computer gong is a kind of automatic numerical control machinery. Now many processing enterprises need this kind of mechanical equipment, but due to the fierce market competition, computer gong processing is chaotic. The author suggests that before purchasing computer gong equipment, we must have a detailed understanding and investigation of the manufacturer. In order to reduce the clamping deformation, special claws are used to clamp the workpiece, and the convex edge is cut off at the end of processing.

Welcome customers send order for cnc machining parts

CNC Milling service

l am sorry that the world is still in the midst of the COVID, Holp the world will be saved soon.

l am gald that china’s manufacturing industry has slowly returned to normal business. Our factory also has normal production and busy workers every day. Our check the temperature of every worker every day to ensure the health of workers and the quality and delivery time of parts.

Welcome new and old customers send order for cnc machining parts.

How to adjust workpiece coordinate system in CNC machining

CNC machining process needs to be adjusted in many aspects. Due to the difference of machining parts, some adjustments need to be made before operation. Let’s take a look at how CNC machining adjusts the workpiece coordinate system?

CNC machining of aluminum parts

When adjusting the workpiece coordinate system, the reference point should be set outside the physical (geometric) length of all tools, at least on the tool location of the longest tool.

For the workpiece coordinate system on the workpiece installation drawing, the operator obtains it by setting the machine coordinate system offset on the machine tool. In other words, the operator sets a reference point on the machine tool, finds the dimension between the reference point and the zero point of the workpiece coordinate system set by the programmer, and sets this dimension as the offset of the workpiece coordinate system.

On the lathe, the reference point can be set at the tool carrier rotation center, the reference tool tip or other positions. If there is no additional movement, the zero of the programmer’s instruction is that the reference point of the tool rest (machine tool) moves to the zero position of the offset. At this time, if the reference point is set at the rotating center of the turret, the turret must collide with the workpiece. In order to ensure that there is no collision, the reference point on the machine tool should not only be set outside the tool holder, but also outside all the cutting tools. In this way, even if the tool holder is equipped with a tool, the reference point will not collide with the workpiece.

On the milling machine, the datum points of X and Y axes are on the axis line of the main shaft. However, the reference point of the Z axis can be set at the spindle end or at a point outside the spindle end. If at the spindle end, when the command is zero, the spindle end will reach the zero position specified in the coordinate system. At this time, the end key of the spindle end will collide with the workpiece: if the spindle is equipped with a tool, it will collide with the workpiece. In order to ensure no collision, the reference point on Z axis should be set outside all tool lengths. Even if no other motion is added, the reference point will not hit the workpiece.

CNC machining adjusting workpiece coordinate system is only a part, so what about CNC machining process?

(1) The technical preparation process includes market investigation, prediction, new product identification, process design, standardization review, etc.

(2) The technological process refers to the process of directly changing the size, shape, mutual position of surface, surface roughness or performance of semi-finished raw materials into finished products. For example, liquid forming, plastic forming, welding, powder forming, cutting, heat treatment, surface treatment, assembly and so on are all process processes. The reasonable process is written into a technical document to guide production, which is called process specification.

(3) Auxiliary production process refers to the auxiliary production activities necessary to ensure the normal operation of the basic production process.

(4) Production service process refers to the organization, transportation, storage, supply, packaging and sales of raw materials.

Difficulties in processing computer gongs

There are three common processing methods of computer gongs: vertical, horizontal and multi axis linkage. What is the difference between them? Let’s talk about it briefly.

1、 Vertical

Familiar with computer gongs processing friends all know that, due to the processing center spindle and worktable relative position is different, so the computer gong processing method is also different, so for operators, what are the common processing methods? Center: it refers to the machining center with the spindle axis perpendicular to the worktable. It is mainly used for processing complex parts such as plates, plates, molds and small shells.

2、 Horizontal computer gong machining center: it refers to the machining center with the spindle axis parallel to the worktable, which is mainly suitable for processing box type parts.

3、 Multi axis linkage type computer gong machining center: it refers to the machining center which can control the linkage change of the spindle axis and the rotary axis of the worktable to complete the machining of complex space curved surface. It is suitable for the processing of impeller rotor, mold, cutting tools and other workpieces with complex spatial surface.

Familiar with the three ways of computer gong processing, but there will be some problems and difficulties in the process of computer gong processing. The author learned from a master who has been engaged in computer gong processing for many years. I hope the following contents can help you.

1. In the process of processing products, when the size of height direction changes greatly, do not adjust the depth of wear tool compensation. First, check whether there is aluminum slag in the tool handle and spindle, and then add wear cutter compensation after confirming that there is no slag.

2. A knife flicks around the corner. When it is found that there is a spring knife at the corner of the product, the size of the corner of the product is analyzed first, and the tool smaller than the R angle of the corner is used. It can also be solved by reducing the spindle speed.

3. When CNC machining deep holes with accuracy requirements, taper is easy to appear, especially when the hole depth is longer, it is difficult to ensure the upper and lower to the next. It can be rough first and leave a small amount of allowance before boring.

4. When using the jaw to clamp the products, the thickness is different, the outer dimension is thinner and the inner dimension is thicker. This is the external jaw clamping to jack up the product. Pay attention to whether the movable part of the jaw is too loose. After locking it, the problem of different product thickness can be solved.

5. The chamfering has burr. When there are burrs after chamfering, first check whether the tool is worn. If the tool is intact, then check the depth and range of chamfering. Generally, these two aspects can solve the problem of chamfering burr

How to determine the tool setting point of CNC machining center

Tool setting means that after the workpiece is aligned and tightened on the CNC machining center, the machine coordinate of the origin of the workpiece coordinate (programming coordinate) is determined (the value of X, y, Z of g54 is determined). Because a complete machining process of a workpiece may involve several or even dozens of cutting tools, because the trial cutting method is relatively primitive and the accuracy of tool setting is poor, it is rarely used. So how to determine the tool point of CNC machining center? After the center is aligned and tightened, determine the machine coordinate of the origin of the workpiece coordinate (programming coordinate) (determine the value of X, y, Z of g54). Because a complete machining process of a workpiece may involve several or even dozens of cutting tools, because the trial cutting method is relatively primitive and the accuracy of tool setting is poor, it is rarely used. So how to determine the tool point of CNC machining center?

CNC machining of aluminum parts

Tool setting point is the reference point used to determine the position of workpiece coordinate system in the machine coordinate system after the workpiece is aligned and clamped on the machine tool. The tool setting point can be selected on the workpiece or clamping positioning element, but there must be an accurate, reasonable and simple position corresponding relationship between the tool setting point and the workpiece coordinate point, so as to facilitate the calculation of the position of the workpiece coordinate point on the machine tool (the machine coordinate of the workpiece coordinate point). The tool setting point should coincide with the workpiece coordinate point.

The common tool setting methods of CNC machining center mainly include automatic tool setting method, tool setting instrument tool setting method, etc. How to realize the two common methods?

1. Automatic tool setting

The automatic tool setting is realized by using the tool detection function configured by the CNC machining center. This device can automatically and accurately measure the length of each tool in each coordinate direction, and can automatically correct the tool error value. The whole detection and correction process can be realized on the basis of the normal operation of the machine tool. This tool setting method is completely realized by electronic control device, which eliminates the error of manual tool setting, so the accuracy and efficiency of tool setting are higher.

2. Tool setting method of tool setting instrument

Tool setting instrument is the main tool setting method for CNC machining center because of its high economy. There are two kinds of tool setting instruments: inside and outside. The tool setting of the external tool setting instrument needs to be calibrated outside the machine tool in advance, and then the tool can be used after being installed on the machine tool; the tool setting of the internal tool setting instrument is a method to directly install the tool on a fixed position of the machine tool for measurement.