Guide - Cnc Machining

How to determine the thickness of aluminum alloy die castings?

2021-07-22 Casting Guide Comments Off on How to determine the thickness of aluminum alloy die castings?

In the design process of aluminum alloy die castings, many customers are uncertain about the thickness of aluminum alloy die castings, and they do not know how thin the thickness of aluminum alloy die...

Precision CNC machining manufacturers explain how CNC CNC lathes are processed

2021-07-22 Cnc Machining Guide Comments Off on Precision CNC machining manufacturers explain how CNC CNC lathes are processed

According to the introduction of precision Cnc Machining manufacturers, the large-scale CNC machining parts are made of bar materials, and the process plan of rough machining and finishing is adopted....

Advanced laser technology: a weapon to improve the level of automobile manufacturing

2021-07-20 Laser Cutting Guide Comments Off on Advanced laser technology: a weapon to improve the level of automobile manufacturing

In recent years, with the continuous progress of science and technology, advanced manufacturing technology represented by laser technology is continuously promoting the upgrading and innovation of the...

Introduction to the method of aluminum alloy die casting to solve casting porosity

2021-07-20 Casting Guide Comments Off on Introduction to the method of aluminum alloy die casting to solve casting porosity

Method to solve casting porosity First analyze the reasons for the formation of stomata, and then take corresponding measures. (1) Choose dry and clean alloy materials. (2) Do not overheat or degas th...

What is the reason for the high temperature of the die-casting mold?

2021-07-20 Casting Guide Comments Off on What is the reason for the high temperature of the die-casting mold?

In the process of using the die-casting mold, we need to understand the reason why the temperature of the die-casting mold becomes higher, so what is the specific reason? Let’s take a look toget...

Talking about the Application of Beryllium Copper in Plastic Mould

2021-07-20 MFG Guide Comments Off on Talking about the Application of Beryllium Copper in Plastic Mould

Nowadays, more and more beryllium copper mold materials have been used in the manufacture of plastic molds, and there is a rising trend. What is the reason for this phenomenon? Let me learn about the ...

What are the advantages of CNC turning and milling processing?

2021-07-20 Cnc Turning Guide Comments Off on What are the advantages of CNC turning and milling processing?

Compared with conventional CNC titanium machining processes, the outstanding advantages of turning-milling combined machining are mainly manifested in the following aspects: ...

Various parts of precision CNC machining

2021-07-20 Cnc Machining Guide Comments Off on Various parts of precision CNC machining

1.Parts with high precision requirements The precision requirements of precision CNC machining parts mainly refer to the precision requirements of size, shape, position and surface, and the surface pr...

Knowledge of aluminum processing technology

2021-07-20 Laser Cutting Guide Comments Off on Knowledge of aluminum processing technology

Aluminum is the most widely used and widely used metal material among non-ferrous metals, and its application range is still expanding. There are many kinds of aluminum products produced using aluminu...

Imported CNC lathe processing machine tool equipment and debugging

2021-07-20 Cnc Milling Guide Comments Off on Imported CNC lathe processing machine tool equipment and debugging

After the Cnc Machine tool is produced by the manufacturer, the machine tool has been subjected to various requirements and inspections, and only after passing the inspection, can it leave the factory...

CNC turning and milling composite processing manufacturers explain the selection of lathes

2021-07-20 Cnc Turning Guide Comments Off on CNC turning and milling composite processing manufacturers explain the selection of lathes

1.Preparation The CNC turning and milling composite processing manufacturer introduced the process requirements of typical parts and the batch of processed workpieces. The function that the CNC...

Dimensional control skills for stainless steel parts processing

2021-07-20 Cnc Milling Guide Comments Off on Dimensional control skills for stainless steel parts processing

Modify tool offset value to ensure dimensional accuracy According to stainless steel parts machining manufacturers, when the workpiece error exceeds the workpiece tolerance due to the first tool setti...

What are the types of cnc parts processing and how to do a good job clamping workpiece?

2021-07-20 Cnc Turning Guide Comments Off on What are the types of cnc parts processing and how to do a good job clamping workpiece?

When starting medical machining, the operator should adjust the feed speed to a very small value, execute in a single block, concentrate on positioning, dropping the tool, and inserting the tool quick...

Aerospace engines are known as the jewel in the crown of modern industry. Their output power is amazing. Aero engines weighing only a few tons can propel passenger planes weighing dozens of tons and hundreds of tons. Generally speaking, the manufacturing cost of aero-engines accounts for about 30% of the total manufacturing cost, and the importance is self-evident. The internal structure of aero-engines is very precise and complex, and the connections between parts should be tightly connected. But when passing by the aircraft engine, a rattling sound can be heard from inside. Could it be that the fan blades inside the engine are loose? That's right, it's loose, but don't be afraid, it was originally designed like this. The aero engine completes the compression and expansion of the gas, and generates powerful power with the highest efficiency. The blade that drives the aircraft forward is a special part with a large number of complex shapes, high requirements, and difficult processing. The curved configuration of aero-engine blades is extremely complex, which transmits considerable torque and extremely high combustion temperature. Therefore, the material of the blade is generally made of high-temperature resistant and high-strength materials. The initial material was a polycrystalline nickel-based superalloy. Later, a polycrystalline blade with oriented grain boundaries was made. The crystalline direction was consistent with the force direction, and the performance was improved a lot. Finally, it developed to the widespread use of titanium alloy materials. Integral blade processing technology. As the load-bearing component of the engine, the blades of these fans are not firmly fixed on the engine, but are stuck in the tongue and groove of the fan disc through the tenon. There is a gap between the tenon and the groove. When the fan rotates slowly, under the action of gravity, each blade will slide toward the axis when it is close to the twelve o'clock position, and when it is close to the six o'clock position, it will move towards The axis slides out in the opposite direction. As a result, the fan blades collided with each other in the process of slashing to and fro, making a rattling sound. The mortise and tenon structure connecting the fan blades and the fan plate is called a "vertical tree" mortise, because it looks like a vertical tree and a fir tree, showing a toothed V-shaped tenon and a groove between the tenon and tenon. The obvious gap can facilitate the free sliding of the tenon within a certain range. Why are aero engine blades designed as loose structures? When the engine fan rotates rapidly and exceeds the critical speed, the rotating shaft begins to approach its geometric center due to its elasticity, and then crosses the geometric center and approaches its imbalance. At this time, the direction of the centrifugal force received by the blade starts from the new rotating shaft and passes through the position of the blade. The component along the tangential direction of the turbine disk points to the opposite direction to the unbalanced position, which makes the blades deviate in this direction, thereby re-adjusting the unbalanced position so that the center of gravity is close to its geometric center, thereby reducing vibration. This process is dynamic, so the vibration of the fan at any high speed can be dynamically reduced, and the angle of the blades relative to the tangential direction of the turbine disk changes periodically, so the blades need to swing left and right. In order to allow the blades to swing freely to a certain extent, the blades are not completely fixed on the turbine disk, but are left with gaps, and the shoulders cannot be completely close to the adjacent blades, which is also to allow the blades to swing. It is certain that not only the blades of the fan are loose, but the blades of the entire compressor are all loose.

Why are aero engine blades designed as loose structures?

2021-07-20 Cnc Machining Guide Comments Off on Why are aero engine blades designed as loose structures?

Aerospace engines are known as the jewel in the crown of modern industry. Their output power is amazing. Aero engines weighing only a few tons can propel passenger planes weighing dozens of tons and h...

Precision hardware machinery parts processing and manufacturing

2021-07-20 Cnc Turning Guide Comments Off on Precision hardware machinery parts processing and manufacturing

Precision machining belongs to the precision machining in mechanical machining. According to the temperature state of the workpiece to be processed, it is divided into cold machining and hot machining...