2019 – Page 52 – CNC Machining & Turning, Milling, Metal parts

The process route of CNC lathe before production

The lathe machining programming refers to the process route, the process parameter, the movement track of the tool, the displacement, the cutting parameters and the auxiliary function before the machining of the NC lathe. The automatic operation process of the whole process is written by means of the language instruction of the NC lathe. The entire programming file is then input into the controller of the CNC lathe. In the later stage, all parts were processed automatically according to the control flow previously designed. It can be seen that CNC lathe processing is more accurate, fast and efficient, which is also the inevitable trend of development of parts processing in the future.
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CNC lathe processing is the industrial foundation of modern production. At present, most parts are processed by numerical control lathe, because the speed of the CNC lathe is faster, the manpower needs less, the cost is lower, and the precision is higher. It is possible to produce any errors in any parts processing and production. Therefore, we must carry out the accuracy check for the products processed by CNC lathes. The inspection of parts processing parts should be paid attention to as follows:
1. length size and groove size are measured with vernier calipers.
Lathe processing has more than 50 employees specializing in manufacturing and sales of hardware accessories manufacturers.
The lathe processing company has many advanced manufacturing equipment, such as CNC CNC lathe, CNC computer gong, automatic

How to choose high quality tungsten steel left hole for automatic lathe hole machining

2018/5/30 11:45:11 Viewers:8

The left drill of tungsten steel is a very common bit for automatic lathe. It is mainly used for machining holes. Many people can’t distinguish between the left drill of tungsten steel and the left drill of the alloy. In fact, the two kinds of bits are all made of hard alloy, but there are only two kinds of methods in the market. Today, the small editor mainly wants to talk about the left drill of the tungsten steel and the machining of the automatic lathe. What kind of tungsten steel left drill is the most suitable to choose!

Many automatic lathe factories are not willing to choose tungsten steel left drill in the face of hole processing, because they think the left drill of tungsten steel is easier and more expensive, so more people will choose the white steel left drill, that is, the often said high speed steel bit or the cobalt left drill. The hole processing is indeed, the hardness of the commonly processed materials is not very high, and the most difficult to cut material is stainless steel.

But in the face of stainless steel is high speed steel left drilling is feasible, but the effect is really good enough? In fact, the effect is far higher than the high speed steel bit. The cost of the left drill of the tungsten steel in the market is about twenty percent higher than that of the high speed steel, but the cost of the left drill of the tungsten steel is much higher than that of the twenty percent, for example, in the processing of stainless steel 30. 4.316.201, and other difficult cutting materials, Xiaobian more strongly recommend tungsten steel left drilling.

There are a lot of tungsten steel left drills on the market, and the OBS tungsten steel left drill is recommended by the small editor. The left drill of OBS tungsten steel is divided into two kinds, one is the left drill with the fixed shank steel, the other is the straight handle tungsten steel left drill. The biggest difference between the two is the fixed handle and the straight handle, the other technology is almost the same, the advantages of the OBS tungsten steel left drill, the first is not easy to choose to choose quality easily. Hard alloy, in the process of processing will not be so easy to break, as long as the normal condition of the drilling shaft in the processing above the material said that the material will not appear broken. The second point is wear resistance!

The hardness of the left drill of the tungsten steel is far higher than the high speed steel left drill, so the left drill of the tungsten steel is better than the high speed steel left drill in the wear resistance. If it is not recognized, that is the quality problem of tungsten steel left drilling. As long as the quality passes, I believe no one will deny that the tungsten steel is left drilling. Quality is never proven by mouth but by action. If you choose to believe in Xiaobian, please contact the best tool and ask for more detailed information on OSB tungsten steel left drilling.

What are the cutting tools necessary for automatic lathe manufacturing

Automatic lathes are also a large, small industry in a wide range of manufacturing industries. Most of them are located in Jiangsu, Guangdong, and what the small editor would like to describe today is about which automatic lathe cutting tools are very important in the production and manufacture of automatic lathes. It’s essential!

Automatic lathes mainly produce precision hardware fasteners. The most common ones are rivets, nuts, and some unusual pieces. Products like automatic lathes are almost toothed and perforated, and they are all molded products. So, in many ways, the advantage of the automatic lathe industry is still great. For example, speed is a very good point! Then Xiaobian wants to ask you what the automatic lathe cutting tools are necessary for everyday use.

The small editor feels that the left drill and taps necessary for the automatic lathe cutting tools are certainly less than that, because the two kinds of cutters will be necessary for the products with holes in the teeth! Moreover, as long as the lathe operation is worth the operation of automatic lathe tool, no matter what product is processed even a shaft also need to use automatic lathe cutting cutter, so the importance of automatic lathe tool in all automatic lathe cutting tools count the number one number one!

In fact, the type of automatic lathe cutting tools is quite a lot, today, the main thing to tell you is that only three cutting tools are essential automatic lathe tool, then thread cutting tool taps, and hole machining tool left drill! Generally, these three knives are enough for a product to be molded in operation. Others are accessories such as chuck, gauge and belt.

Guide for installation and use of gasket

1. Installation requirements
1, gasket and flange sealing surface should be cleaned, there must be no influence on the sealing performance of the scratch, spots and other defects.
2, the outer diameter of the gasket should be smaller than the flange sealing surface. The inner diameter of the gasket should be slightly larger than the inner diameter of the pipe, and the difference in the two inner diameter is generally 2 times that of the thickness of the gasket to ensure that the inner edge of the gasket is not extended into the container or pipe to prevent the flow of the fluid in the container or pipe.
3, the pre tightening force of the gasket should not exceed the design requirements, so as to avoid excessive compression of the gasket and lose resilience.
4. When the gasket is pressed, it is best to use the torque wrench. For large bolts and high strength bolts, it is better to use hydraulic tighten. The tightening torque should be calculated according to the given shim compaction, and the size of the hydraulic pressure of the hydraulic tightening device should also be determined by calculation.
5. When installing gaskets, tighten the nuts in turn in the right order. But it should not be screwed up once to achieve the design value. Generally, it should be circulated at least 2~3 times, so that the stress distribution of the gasket is uniform.
6. For flammable and explosive medium pressure vessels and pipes, safety tools should be used when dressing gaskets, so as to avoid sparks caused by tools and flanges or bolts, resulting in fire or explosion accidents.
7, if there is any leakage, it is necessary to reduce pressure and replace or adjust the installation gasket.
Two. Special installation requirements
1. When installing a winding gasket with a flanged flange, attention should be paid to the concentricity of the seal and the pipe. In general, a strong ring is used to locate the inner circle of the bolt, and the eccentric installation is not allowed. When installing the basic type spiral wound gasket in the flange of the tenon groove surface, attention should be paid to keeping the gap with the groove wall surface.
2, when the metal covering gasket with a narrow width is installed, a certain thickness of the steel plate should be placed outside the pad, and then the flange is pressed so as to prevent the sealing of the covering filler in the gasket to be expanded and damaged.
3. When the working temperature of the flange is higher than 200 c, sealant should be coated between the flange seal surface and the gasket to prevent the sintering of the gasket and flange sealing surface at high temperature, which will increase the trouble for the repair and replacement of the gasket.
4, the sealing surface is not normal, the sealing surface can be coated with sealant and then install gaskets. The sealant is made up of manganese dioxide, lead, graphite powder and linseed oil. According to the sealing medium, working temperature and medium pressure and other conditions, choose the corresponding type and brand of liquid sealant.
5, for installing octagonal metal ring gaskets, when metal ring gaskets and flange sealing grooves are not well processed, they can be closely bonded through research. For large diameter metal ring gaskets, it is difficult to prepare and research. In order to fill the tiny uneven surface of the metal, sealant can be used.
Three. Inspection of bolts and flanges before installation
1. Inspection of bolts and nuts
1) the material, type and size of bolts and nuts should conform to the requirements of drawings.
2) the nut should be rotated on the bolt without being swaying.
3) the bolt should not be bending.
4) the bolt thread does not allow the disconnecting phenomenon.
2. Check flanges
Check whether the flange type meets the requirements, whether the sealing surface is clean, whether there is mechanical damage, radial scratches and rust.
3. Check the gasket
1, whether the gasket material, type and size meet the requirements;
2, whether the surface of the gasket has mechanical defects, radial marks, serious rust, internal and external edge damage and other defects.
3. For elliptical and octagonal metal gaskets before installation, check whether the size of the trapezoidal groove of the flange meets the requirements and whether the groove is clean. Red lead oil can be coated on the surface of the ring gasket to check whether the contact is good. If the contact is bad, it should be grinded.
Four. Requirements for the installation quality of pipes and flanges
1. partial mouth
The pipe and flange are not vertical and concentric, and the flange faces are not parallel. The allowable deviation between the two lanes is: when metal gaskets are used, they should be less than 2; when using metal non metal combined gaskets and metal gaskets, they should be less than 1.
2. wrong mouth
The pipe and flange are vertical, but the two flanges are not concentric. When the diameter of bolt holes and the diameter of bolts meet the standards, it is acceptable to bolt freely into bolt holes without using other tools.
3. mouth opening
It means that the flange gap is too large. The opening value (excluding the pretension value of the pipe and the thickness of the gasket or blind plate) between the two French lanes is that the opening of the pipe flange shall be less than 3; the flange connected to the device shall be less than 2.
4. error hole
The pipe and flange are concentric, but the distance between the two bolts corresponding to the bolt hole is larger. The allowable deviation of the center circle radius of the bolt hole is as follows:
When the diameter of bolts is less than 30, the allowable deviation is + 0.5.
When the diameter of bolts is greater than 30, the allowable deviation is + 1.
The allowable deviation of the distance between two adjacent bolts is + 0.5.
The total deviation of the chord distance between any few holes is:
DN less than 500 flanges, the allowable deviation is 1
DN600 to 1200 flanges, the allowable deviation is 1.5
Flange deviation from DN1300 to 1800 is allowed to be + 2.
Five. The method of controlling the fastening force of the bolt
Before installation of bolted flanges, the tightening force should be estimated according to the new and old degree of bolts, lubrication status and material quality. If the fastening force is too small, the preload stress of the gasket is insufficient, and the connection can not be sealed. If the fastening force is too large, it often causes damage to gaskets or sealing surfaces. Therefore, the fastening force of the bolt must be controlled. The special tools such as the force wrench and the fixed torque wrench must be used to control the fastening force of the bolt, and the pretightening force is calculated and controlled.

Gear forging manufacturers remind you to use gears correctly.

The following is a company expert to show you where to use the gears.
1, tooth surface wear
During the use of gear, the wear of the tooth surface will be caused by mechanical wear during operation. In particular, open gear transmission or closed gear transmission with unclean lubricating oil, because of the relative sliding between the teeth of the meshing teeth, makes some harder grits into the friction surface, so that the tooth profile changes and the side gap increases, so that the gear thinning causes the tooth to break. So when you use it, you need to get on the gear and rub the oil on the gear so that the service life of the gear can be ensured.
2, the gluing of the tooth surface
Tooth surface gluing is the phenomenon of metal adhesion between two gears after contact. This is because the gear in high speed and heavy load transmission, because of the friction force between the tooth surface is bigger, the relative speed is large, causing the meshing area temperature to be too high. Once the lubrication condition is bad, the oil film between the teeth will disappear, which makes the metal surface of the two teeth contact directly, and thus the phase is bonded to each other. At this time, a certain groove will be formed on the soft tooth surface.
3. Fatigue pitting
Fatigue pitting is the most inevitable and unavoidable form of long-term work. During the working process of the gear, the two gears that bite and contact each other will not change greatly. This is because in the process of working, the gear is a periodic motion, that is, the repeated movement of the gear, so that the contact surface of the two gears is fixed, and the tooth surface will appear in the long period of movement. Fissures.

Selection of the structure of the Cots

The choice of rubber roller structure is generally considered in terms of yarn quality requirements, pressure volume, cost and other factors.
The rubber roller structure usually has four types: single layer (now eliminated), double-layer, aluminum lined pipe and multi-layer. A kind of rubber roller, which is developed by uurekang company, is mainly designed to increase the elasticity of the cots to cover a thin Shaoer A hardness of 62 degrees NBR near the aluminum layer, and the rubber coating on the outer layer of shore A with a hardness of 65 or 75 degrees. During the selection process, aluminum liner is used when the yarn quality is high, and the rest is double layer; aluminum liner is used when the pressure resistance is high, and the pressure resistance is low, then the double layer is used.
The misunderstanding of structure selection is mainly embodied in two aspects, either the use of double decker cots, or all the use of aluminum liner cots, rather than the actual requirements of the enterprise. This misunderstanding is mainly due to failure to grasp the principle of structural selection.
In theory, both aluminum liner and double roller have advantages. The pressure resistance, stability and simplicity of the aluminum liner are superior to double cots, but the price is higher than that of double cots. Because of the longer ripening period of the double cots, the inner stress is large and the inner stress is easy to be aged, so we generally recommend the use of aluminum liner, but the quality is not high or the back roller is more suitable for the cost consideration or the use of double roller.

High frequency oscillation principle of high frequency plastic packaging machine

High frequency uses the principle of high frequency oscillation to weld plastic together. The high frequency thermal bonding packaging machine all uses high frequency oscillating barrel oscillating moment to produce high wave electromagnetic wave current to weld various shapes of PVC, TPU, EVA, PETG and other plastic blister materials.
One, oscillating barrel is also called oscillator. The high frequency heat sealing packing machine of Jun Jing game has two kinds of drum and square barrel, which belong to the special parts of high frequency machine. The barrel is also called a coaxial oscillator, consisting of an inner barrel, an outer barrel, a circular filter ring and a barrel cover. High cycle power output is very strong, which can be adjusted according to the size of die and material thickness, especially special high cycle circuit, high stable output and very strong output rate. It can effectively shorten welding time, improve product quality and production speed.
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Two. The schematic diagram of the structure of the oscillating bucket
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Three. The oscillating drum of the high frequency heating packaging machine should be customized and maintained.
1. do not use in wet environment and keep clean.
2. at work, objects must keep at least 50-150mm distance.
3., the main body should not be impacted by a sharp hard object, so that it will be deformed, so as not to cause flash or affect the frequency of oscillation.
4. when the inner and outer barrel walls are more oxidized or flare traces, they should be treated in time to ensure stable frequency.
5. regularly clean up the dust in the oscillating bucket and keep the machine working in a clean and ventilated condition.

What are the factors that affect the tensile properties of metals?

Metal drawing technology refers to a mechanical processing technology that uses a mold to press a certain shape plate blank after blanking into a variety of open hollow parts or to reduce the diameter of the open hollow blank and increase the height of the blank. The deep drawing process can be used to make cylindrical, stepped, tapered, spherical, box shaped and other irregular shaped thin-walled parts. It can also make parts with extremely complicated shape, such as flanging, bulging, flaring and necking. The following is a brief introduction of the factors affecting the tensile properties of metal materials.

1. Properties of metal raw materials
Metal materials are usually referred to as metal elements or metal elements, which have metal properties, including pure metals, special metals, alloys, and metal intermetallic compounds. In the process of metal material processing, its microstructure will be affected and changed accordingly. The special properties of metallic materials are mainly manifested in the following aspects:
(1) fatigue. Many metal materials, such as engineering components, mechanical parts and so on, need to bear the alternating load during the working process. Under this effect, although the yield limit of metal materials is far higher than the stress level, the phenomenon of sudden brittle fracture will occur after a long period of stress circulation. This phenomenon is the metal material. Fatigue is the most common and dangerous form of fracture.
(2) plasticity. Under the action of external force of load, the ability of permanent deformation of metal materials without damage is the plasticity of metallic materials. The better the plasticity of metal material, the more plastic deformation can be formed in a larger range, and the strength of metal material is strengthened in the process of plastic deformation, and the safety of metal material is increased.
(3) hardness. Hardness mainly refers to the resistance of metallic materials to hard objects pressing into their surfaces. It is one of the important indicators to consider the properties of metallic materials. The hardness of metal material is the result of the joint action of the initial plastic deformation resistance and the continuous plastic deformation resistance. Generally, the higher the hardness of the metal material is, the better the wear resistance will be.

Two. The effect of processing on the tensile properties of metal materials
The tensile properties of metal workpiece will have different effects according to the order of deformation, processing speed, stamping oil performance, processing temperature and so on. The selection of reasonable process according to the requirements of different workpiece performance can significantly improve the tensile properties of the workpiece.
(1) effect of processing temperature on tensile properties of metallic materials
With the increase of the molding temperature, the molecular motion energy, the free volume of the melt and the activity of the segment will increase, which reduces the intermolecular interaction and the melt viscosity, and increases the transverse tensile strength of the metal materials. However, this does not mean that the higher the molding temperature is, the transverse tensile strength of the metal materials will increase first and then tend to be gentle with the prolongation of the processing time.

(2) effect of drawing speed on tensile properties of metallic materials
In the internal metal materials, there are often dislocation and other crystal defects. At normal temperature, the tensile properties of metal materials are mainly in the stage of elastic deformation and plastic deformation. The plastic deformation of metal materials mainly depends on the dislocation mode. Once the external force exceeds the critical value of the slip, it will lead to the movement of the crystal direction and the crystal surface, and the corresponding motion speed will be produced during the movement, which causes the tensile strength of the metal material to increase with the tensile speed during the stretching process. Rise。

(3) impact of stamping oil on tensile properties of metallic materials
The temperature of the general workpiece in the stamping process will rise quickly, and the special stamping oil must be used to cool the workpiece. Otherwise the temperature will cause the problem of the workpiece to be blackened by the decrease of the surface finish of the metal. Besides the smoothness of the workpiece, the life of the die will be shortened and the accuracy will be reduced. The special stamping oil will stick to the key parts of the heat automatically and protect the mold from wear. Moreover, the workpiece will not oxidize rusty for a short time under the protection of oil products, and will not affect subsequent electroplating and welding processes.

To sum up, in the process of metal material processing, various factors will have a certain effect on the tensile properties of metal materials, and make the tensile strength, the elongation at the end and the surface quality of the workpiece change. Reasonable arrangement of technology helps enterprises to reduce costs and enhance product competitiveness. By using the self developed vulcanized lard and sulphide fatty acid ester as the main additive, it has a good performance of extreme pressure and abrasion resistance. It can effectively improve the surface finish and processing efficiency of the workpiece, and have no harm to the human body, the workpiece, the equipment and the environment. It is the reference of many metal processing enterprises in China. The partners have been well received by customers at home and abroad in practical applications.

The daily preservation method of diamond saw blade

The design of diamond saw blade can make the cutter head stronger and also increase the self protection ability of the matrix. The saw blade is more welcome to the customers both in performance and in appearance.
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The daily preservation methods of diamond saw:
1. saw blades with larger outer diameter (above 300mm diameter) should be coated with oil on the surface so that the quality of the saw blade will not drop.
2. some diamond saw blades, especially ultra thin sheets, can not be stacked and stored on top of them.
3. saw blade matrix 65 manganese, in a specific environment, such as moist, air containing acid gas or alkaline substance, will cause the blade surface to accelerate oxidation corrosion, easy to rust, because the storage should be closed, put in the dry place.

Processing of different material surface process in sheet metal processing

The commonly used sheets in sheet metal processing are cold-rolled plates, hot-rolled plates, stainless steel rods, galvanized sheets, etc. Different materials have different surface treatment methods. Today Xiaobian is going to give you a brief introduction to the processing methods of different material surface processes in sheet metal processing.
The product of sheet metal processing needs to be made according to the requirements of the customer, and the different customers are different to the material of the sheet metal processing. Therefore, the processing of the different material surface process in the sheet metal processing should also be adapted to the selected material. Stainless steel sheet can be made of wire drawing or coating or galvanizing; cold rolled plate and hot rolled plate can be made of powder or paint spraying. It is necessary to ensure that the coating must be used to ensure that the coated material is free of oil, rust and impurities, and the coating surface should be evenly distributed in a layer of phosphating film to improve the coating. Adhesion and corrosion resistance. Compared with the powder injection, the spray painting is not the same as before spraying, and the other is the same as before spraying.