Category Archive Machinery industry

How did this come about? Xiaobian doesn’t know, but when we operate, no matter how, or according to their own needs, because with others will not necessarily meet their own requirements, so we have to choose according to their own father’s needs, so we can do it for ourselves. Then we will discuss whether the precision of machining is the finer the better?

1. Profilometer and roughness meter are not the same product. The main function of profilometer is to measure the contour shape of part surface.

For example: groove depth, groove width, chamfering (including chamfering position, chamfering size, angle, etc.), straightness of cylindrical surface lines and other parameters. In a word, profilometer reflects the macro contour of parts.

1. The function of the roughness meter is to measure the surface processing quality of the grinding / finishing turning process of the part surface. Generally speaking, it means that the surface of the part is processed to be smooth (the old national standard of roughness is called cleanliness), that is, the roughness reflects the micro situation of the machined surface of the part.

In general, the processing of ordinary machine tools is about 3.2, and the high-speed machine can achieve a finish of 1.6. For more information, please visit our website

It is also normal to have faults in the process of processing. In addition, there are many failures of machine tools, and the reasons are very diverse. Therefore, it is difficult for many users to find out the cause of the fault when they deal with it. Sometimes it is a problem of parts, sometimes it is a problem of assembly, maybe there is a problem of design, so we want to find the reason Is to spend the mind, then we will learn about Dongguan machining machine tool common fault what?

① Wear failure

It refers to the failure caused by normal wear and tear that has been expected and inevitable in design.

② Misuse failure

It is a failure caused by improper use or improper use.

③ Congenital failure

It is a fault caused by improper design or improper design.

In addition to the cause of the fault, there is a nature of the fault.

The nature of the fault is divided into the following two types.

① Intermittent fault

Some parts need not to be repaired for a short time.

② Permanent failure

Some of the functions are damaged and parts need to be replaced before they can continue to work.

For example, for example, the diameter of a cylinder has strict requirements, and the positive and negative deviation is within the boundary required by the articles of association. Otherwise, they are all different parts; For example, if the diameter of an embedded cylinder is too large to exceed the allowable limit of deviation, it will form a situation that cannot be inserted. If the intrinsic diameter is too small and exceeds the lower limit of the allowable negative value of deviation, it will form the problem of too loose insertion and instability.

These are the products of divergent lattice. Perhaps the length of the cylinder is very long or too short, which exceeds the allowable deviation line. They are all the products of divergent lattice, and they will be scrapped or processed from scratch, which will inevitably increase the cost.

The second is the advanced non-standard parts processing equipment and testing equipment, advanced processing equipment makes the processing time of careful parts more simple, higher precision and better efficiency.

These are the requirements of precision parts processing, I hope to help you.

In the process of work, we certainly want to improve our work efficiency through some methods, but this is not what we say we can improve if we want to improve. First of all, we must guarantee the quality of products on the premise that our efficiency is not high, or the quality of products will not be guaranteed, which is in vain. So we will learn how to improve the efficiency of Dongguan machining?

In the process of using speed control machine tool for processing, it is necessary to ensure that the worktable can bear the most sufficient weight and ensure that the machining process can be carried out smoothly. Modern processing is to be able to improve production, if the processing table can not meet the requirements of use, in the production process will be affected.

In the process of mechanical processing, due to the increasing speed of modern high-speed cutting, in order to adapt to the processing method, then only to reduce the radius of the tool, improve the moving speed of the main bearing of the machine tool. Meet the use requirements in the process of processing, improve the quality of use. For the mold in the production process, need to achieve high precision, high stability and high speed processing requirements. Only in this way can we improve the cutting ability of the machine tool in the process of cutting and ensure the effect of machining.

In the purchase of products, the premise is generally quality. Only the products with good quality can ensure the efficiency of our work and the quality of products. For example, when we CNC processing, the most important is the mold, only good mold can make good products, this matter is very important. The mould will wear after a long time of operation, which will definitely affect the product. So it is very important to choose a good mold, so let’s understand what problems should be considered when choosing a mold?

1. There are many kinds of molds, which can be roughly divided into ten categories. According to the different requirements of parts material, physical and chemical properties, mechanical strength, dimensional accuracy, surface finish, service life and economy, different types of die forming are selected.
2. The die with high precision needs to be processed by high-precision CNC machine tool, and the die material and forming process have strict requirements, and CAD / CAE / CAM die technology is also needed to design and analyze.
3. Due to the special requirements of some parts, the mold also needs to use advanced technology such as hot runner, gas assisted molding, nitrogen cylinder and so on.
4. The manufacturer shall be equipped with CNC, EDM, WEDM and NC profiling milling equipment, high-precision grinder, high-precision CMM, computer design and relevant software.
5. Generally, large stamping dies (such as automobile cover parts mould) should consider whether the machine tool has blank holder mechanism, or even edge lubricant, multi position progressive, etc. In addition to stamping tonnage, punching times, feeding device, machine tool and die protection device should be considered.
6. The above mold manufacturing means and technology are not owned and mastered by every enterprise. When selecting the mold processing factory, we must understand its processing ability, not only depends on the hardware equipment, but also combined with the management level, processing experience and technical strength.
7. For the same set of mould, there is sometimes a big gap between quotations from different manufacturers. You should not pay more than the value of the mold, at the same time, should not be less than the cost of the mold. Mold manufacturers like you, to make a reasonable profit in the business. Ordering a set of molds with a much lower price would be the beginning of trouble. Users should start from their own requirements and measure comprehensively

In the process of our processing, it is a normal phenomenon to encounter problems, because during the operation of the equipment, there will be wear between the parts. If there is wear, the fault will occur naturally. If the fault occurs more, it will certainly affect the service life of the equipment. So if we want to extend the service life, we must do well in the maintenance The problem must be solved in time, so let’s understand what causes the die punch fracture?

1. In the blanking process, the punch is subjected to unbalanced lateral pushing force, which makes the punch bend or even break. This kind of force mainly includes the following aspects:

① When rubber is used as elastic unloading part, rubber compresses to produce lateral expansion and extrudes punch to one side due to improper assembly.

② The imbalance of spring force in the unloading device makes the unloading plate incline, which makes the punch bend and break when it is pushed by transverse force.

③ The position of the big punch and the small punch are close. In the blanking process, the material around the big hole deforms, and the small punch may break.

1. If the ratio between the diameter of punch section and the length of its working part is improper, the punch may be broken.
2. When a small punch is used to punch thick and hard materials, the punch is easy to break, and the diameter of common punch should be larger than the material thickness of metal stamping parts. Otherwise, punch sheath structure should be adopted.
3. Die fracture is also often caused by incorrect design and manufacturing, small fillet radius at corner of step punch, rough machining, no edge mark and grinding crack, decarburization layer caused by forging is not completely removed by machining, carbide segregation is not improved during forging of high alloy tool steel, improper heat treatment process and so on. Especially for cold extrusion punch.

No matter what kind of work you are doing, it is common to have problems in the process of work. If you encounter problems, you must solve them in time to avoid causing bigger problems later. However, there is a problem that many users easily ignore when dealing with a problem, that is, they will not find the reason, just solve the problem directly. Before solving the problem, we must find out the reason first, so as to eliminate the root. Then we will understand what causes the punch to fall off in the stamping process?

1. For the fixed structure of punch pressed in by interference fit, the punch is easy to loose and fall off because it fails to meet the required interference during manufacturing and is remedied by “twist extrusion and chiseling”.
2. If the punch is not stepped or fixed with fasteners, the unloading force will increase and the punch will be pulled out when the thick, hard or viscous material is punched and the clearance between the discharge plate hole and the punch is too small.
3. The rigidity of punch or die base is poor, and elastic deformation occurs in the process of blanking, which makes the punch collide with the discharge plate or gets stuck with the female die, which increases the unloading force and makes the punch pull out easily.
4. If the gap between punch and die is too small and the working surface is rough or the gap is inclined to one side, the discharge force can be increased and the punch can be pulled out.
5. The die with low melting point and die is easy to pull out when assembling.

No matter what the problem is, if we want to solve the problem, the first thing is to find out the cause of the problem, so that we can solve the problem according to the order. If we only solve the surface problem, then we believe that it will recur in a short time. Then we will understand what causes the uneven shape of stamping and drawing parts?

1. There is no air hole on the punch.

In the stamping process, the air in the workpiece is compressed by the punch and can not be discharged, which makes the shape of the drawing part uneven. This reason is often ignored by many people. The solution is to add air holes on the punch.

1. The blank is not smooth.

The surface of the blank is not smooth, which leads to the surface unevenness of the drawing part. The solution is to replace the material with good surface quality.

1. The material has large rebound.

The springback of material is large, resulting in uneven shape of drawing parts. The solution is to increase annealing or shaping process.

1. The gap between punch and die is too large.

If the gap is too large, the working surface of the die will lose the straightening effect on the workpiece wall, and the workpiece shape will be uneven. Therefore, the die gap should be repaired or replaced with new parts.

1. The negative deviation of material thickness is too large.

If the thickness of the material is too small, the gap between the dies will be relatively large, resulting in uneven shape. It is necessary to change the material with proper thickness.

When processing, we will encounter a lot of fault problems, which are caused by some problems between parts or some operation problems. Before processing, we need to understand the common sense of processing technology. Then we will learn about the common sense of the Dragon Gate milling process

1. What is gantry milling processing: gantry milling processing, full name: gantry milling machine processing.
2. Classification of gantry milling machining center: gantry milling machining center generally has portal frame and horizontal long bed.
3. Characteristics of gantry milling: it can use multiple milling cutters to process the surface at the same time, and the machining accuracy and production efficiency are relatively high
4. Application scope of gantry milling: gantry milling is suitable for processing plane and inclined plane of large workpiece in batch and mass production.
5. The difference between gantry milling and CNC gantry milling: CNC gantry milling machine can also process space curved surface and some special parts.
6. The difference between the gantry milling machine and the planer: when the gantry milling machine is processing, the shape of the gantry milling machine is similar to that of the planer planer. The difference lies in that the cross beam and column of the gantry milling machine are not planer tool holders, but milling tool holders with spindle box. And the reciprocating motion of the longitudinal table of the gantry milling machine is not the main motion, but the feed motion, and the rotary motion of the milling cutter is The main movement.

There are also some variants of the gantry milling machine to adapt to different processing objects. The main parameter of the gantry milling machine is the width of the working table, and there are also the gantry width as the parameter. Let’s talk about it today. If you want to know more, please visit Dongguan machining website

Machining process is the process of manufacturing workpieces or parts. The process of changing the shape, size and surface quality of blank directly by mechanical processing method is called machining process. For example, the processing process of an ordinary part is rough machining – finishing – assembly – Inspection – packaging, which is a general process of processing.

Mechanical processing technology is to change the shape, size, relative position and nature of the production object on the basis of the process to make it a finished product or semi-finished product. It is a detailed description of each process. For example, as mentioned above, rough machining may include blank manufacturing, grinding, etc. finishing may be divided into turning, fitter, milling machine, etc., and each step should be detailed Fine data, such as how much roughness to achieve, how much tolerance.

According to the quantity of products, equipment conditions and the quality of workers, technicians determine the technological process to be adopted, and write the relevant contents into process documents, which are called process procedures. This is more targeted. Every factory may be different, because the actual situation is different.