July 2019 – Page 66 – CNC Machining & Turning, Milling, Metal parts

The difference between numerical control lathes and ordinary lathes

Numerical control lathe refers to the use of numerical control program to control the purpose of the machine tool, so that the operation of batch automatic processing. Today, the standard lathes have better adaptability compared with ordinary machine tools. They can be processed on some parts with smaller volume and more complex structure. High precision, in production has better efficiency, can be realized in the same walking bed for many process processing, in addition to low labor intensity, high degree of automation advantages.
2-TCKZ-20N-400-400

Ordinary horizontal lathes are often used in turning the inside and outside turning surface of the product and the processing of thread. Usually, the tools are used to drill holes and expand holes. It is a kind of lathe used at home at present, which accounts for 65% of all the total.

The difference between the ordinary lathe and the numerical control lathes

1, the common lathe used the thread of the trapezoidal thread to process the thread while machining the thread. At the same time, the lathe used the light rod to process the cutting, while the CNC lathe used the ball screw to process the thread when the thread was processed.

2, numerical control lathe and ordinary lathe tool holder position is different, the position of the heart bed is basically on the left of the operator, and the position of the ordinary lathe is usually on the right of the operator, for the different position of the good or bad, as long as more convenient operator to operate it.

3. Two rails are also different in the guide way. The guide rail of the ordinary lathe is rigid rail, while the core bed has a line rail besides hard rail.

4, the handle of the ordinary lathe is equipped with more, large, medium and small trailer handle, and these are not in the heart bed, not only so also there is no small trailer, the reduction of these accessories, shorten the operation process, let the workers in the operation more convenient.

5, in the equipment of the motor, the two kinds of lathes also have a big difference, the spindle motor of the ordinary lathe can be used by ordinary motor, but if it is a heart bed, it usually uses a variable frequency motor.

6, the heart bed can achieve a larger scope of automation, in the spindle, feed, cooling pump control, the use of traditional lathes are manual control, the heart bed can be fully automated, of course, can be operated manually.

7, in addition, ordinary lathe has no digital control operation, but the center bed has.

Advantages of numerical control lathes

The heart bed has a better processing precision. It can get better product quality at the time of processing. It can carry on the movement of multiple coordinates. For some parts with more complex shapes, it can also be well processed. If it is the time to change the parts needed to be processed, only the numerical control program can be changed. And no other operation steps are needed, so that the production preparation time can be saved to a large extent. In terms of productivity, the bed is very high, which is more than six times higher than that of ordinary machine tools.

CNC lathes do not have too many steps in the operation, so the quality of the operators is not particularly high, but the requirements of maintenance are higher, so we need to hire professional equipment maintenance personnel, if they do not understand, they can not be at random.

Precautions for the use of tractors

(1) the throttle should not be placed at the maximum position at startup. When the engine is started, the throttle should not be placed in the maximum position, otherwise the engine can reach a high rotational speed and discharge a large number of black smoke at the same time, which will aggravate the wear of the parts and shorten the service life of the machine. When starting, the throttle should be placed in the middle oil gate position.
(2) the cause of engine reversal at startup. When starting, if the engine comes out of air filter smoke and muffler intake, this means that the engine is reversed. Most of the engine reversal is due to the excessive oil advance angle. Oil has been supplied before the piston has reached the level of fuel supply. When the fuel is deflagrated ahead of time, the piston is pushed back and the crankshaft is reversed; in addition, when the engine is started, the rolling time is too long and is not started, the fuel accumulates too much, and it can easily cause the reversal, or when the flywheel is rocking, the pressure relief handle is moved to the “running” position and satisfies the mixture when the piston does not reach the stop point. Combustion conditions, the mixture of deflagration after the piston back, resulting in reversal. When the engine reverses, the order of the intake and exhaust stroke is reversed, and the oil of the oil tray in the air filter is often flushed out, the engine sound is abnormal, and the parts are very easily worn. Once the reversal occurs, shut down the accelerator immediately and stop the fire.
(3) in winter, after the tractor stops, the cooling water can not be released immediately. The normal working temperature of the engine is 75~95 degrees, while the external temperature is very low in winter. After the tractor stops, if the cooling water is released immediately, because the surface of the metal parts is cooled and contracted suddenly (the metal temperature in the machine parts is still high, it seldom contracts), it is easy to make the body and cylinder head produce deformation and crack. Therefore, in winter, the cooling water must be released when the water temperature drops to 40~50 degrees after the engine is extinguished.
(4) no cold water can be added to the engine when the engine is overheated. When the engine needs to add water due to the lack of water in its work, it should not immediately add cold water. Otherwise, the body and cylinder head will crack due to the sudden shrinkage of local temperature and shrinkage of metal. When adding water to work, the engine should be operated at a low speed for 10~15 min, and when the water temperature is lowered, the cooling water will be slowly added to the engine.
(5) no long-term overload operation. Some drivers, because of the lack of common sense of agricultural machinery, want to earn more money and increase their loading at random when they are engaged in transportation operations. Due to overloading operation, the fuel supply is increased, the rotational speed is reduced, and the fuel combustion is bad. This will not only increase the wear of parts, but also reduce the service life of locomotives. So, do not overload the locomotive.

Basic information of optical fiber laser marking machine

In recent years, fiber laser has become a hot topic in laser physics research. It is considered that it is possible to completely replace the new generation of solid laser. Fiber laser is a laser which uses the rare earth element glass fiber as the gain medium. The fiber laser can be developed on the basis of the fiber amplifier. The high power density is easily formed in the optical fiber under the action of the pump light, which causes the laser energy level of the laser working material to be reversed by the number of particles, when the positive feedback loop is properly added. The resonator can form a laser oscillating output. Fiber laser marking machine uses laser beams to mark permanent marks on different material surfaces. The effect of marking is to reveal the deep material through the evaporation of the surface material, or to “engrave” from the chemical physical changes of the surface material through the light energy, or to burn out some of the material through the light energy, and show the patterns, characters, bar code and the like of the required etching.

Compound process process of composite machine

1. preparation

First of all, the guide roller is loaded according to the direction of the line. At the same time, the adhesive is adjusted in proportion and the heating system of the oven is started. When the corresponding setting temperature is reached, the transmission motor can be opened, and the coating can be produced.

2. coating

The substrate of the unwinding device must first pass the anilox roller, then coat with the glue, then dry the bath through the drying way, that is to finish the coating process.

3. compound

The compound process is realized after the EPC gas liquid rectify deviation enters the composite part and is bonded with the substrate of the second unwinding part.

4. cooling reel

After the cooling coil is completed, the whole production process of the substrate is completed, and the following problems should be paid attention to in production.

(1) adjust the flatness of the substrate by adjusting the position of the adjusting roll.

(2) adjusting the compound pressure between the compound rollers by adjusting the relative distance between the two compound rollers.

Packer

Packaging machine is a kind of machine packaged with products, which plays a protective and aesthetic role. Packer is mainly divided into 2 parts: 1. assembly line production, 2. product peripheral packaging equipment.

Application of packaging machine
Pipelined overall production packaging is used in food, medicine, daily chemical, hardware, lighting, furniture and other industries (bag, bottled), filling (filling), sealing machine and code.
Mainly include: liquid (paste) filling machine, pillow type packing machine, horizontal packing machine, vertical packing machine, powder particle packing machine, bag type automatic packaging machine, frozen product automatic packaging machine, etc.

Periphery of the product
Packaging equipment for production, after spraying, production date, seal, shrink film, etc.
It mainly includes: packing machine, filling machine, sealing machine, coding machine, packing machine, vacuum machine, shrinking machine, vacuum packing machine, weighing packer, etc.
The packaging machine adopts the color touch screen and the stable and reliable PLC control, bag making, metering, filling, sealing, code making and bag cutting.
It uses gas path control and circuit control to separate independently, with low noise and stable performance.
Using double belt servo die and double servo control, less resistance, better packaging bag shape, more beautiful, high precision positioning, accurate size.

The main use of common machine tools

Lathe
It is mainly used for processing various end surfaces of revolving surface and revolving body. For example, the inside and outside cylindrical surface, conical surface, ring groove and forming rotary surface, turning end and a variety of common thread, equipped with technical equipment can also process a variety of special surface. On the lathe, drilling, reaming, reaming, knurling and so on can be done.
Milling machine
A wide range of machine tools, the milling machine can be machined on the plane (horizontal, vertical), groove (key slot, T groove, swallowtail groove, etc.), toothed parts (gear, spline shaft, sprocket good, spiral surface (screw, spiral groove) and various surfaces. In addition, it can also be used for machining and cutting off the surface and inner hole of the revolving body. When the milling machine is working, the workpiece is installed on the worktable or on the top class accessories. The milling cutter rotates mainly, with the feed movement of the worktable or milling head, the workpiece can get the required surface. Because of the Multi Tool interrupted cutting, the milling machine has higher productivity.
Planer
Slotting machine
It is mainly used for processing various planes (such as horizontal, vertical and inclined surfaces and various grooves, such as T grooves, dovetail grooves, V grooves, etc.) and straight line forming surfaces. If equipped with profiling device, it can also process space curved surfaces, such as turbine impeller and spiral groove. This kind of machine tool has simple structure and no cutting in return, so it has low productivity and is generally used for small batch production.
Boring machine
It is suitable for plane milling and hole machining for single piece or small batch production. The end of the spindle box is designed with a flat rotating disc radial tool frame, which can accurately bore holes and planes with larger size. In addition, drilling, hinges and thread processing can also be carried out.
Grinding machine
A machine tool that uses abrasive Abrasives (grinding wheels, abrasive belts, oil or abrasives, etc.) as tools for cutting the surface of a workpiece is collectively referred to as a grinder. The grinding machine can process various surfaces, such as cylindrical surface and conical surface, plane, gear tooth Gallery, spiral surface and various molding surfaces, and can also sharpen cutting tools and cut off, and so on. The process range is very wide. The grinding machine is easy to get high machining precision and good surface quality, so the grinding machine is mainly used for the finishing of parts, especially the finishing of hardened steel and high hardness special materials.
3040 double -1 drilling machine

A versatile machine tool with a wide range of applications can be used for drilling, reaming, reaming, counter facing and tapping. When equipped with process equipment on the radial drilling machine, boring can also be carried out, with universal worktables (MDT-180 type) on the bench drills, and keyways can also be milled.
Gear machining machine
Gear is the most commonly used transmission part, with straight teeth, helical teeth and herringbone cylindrical gears, straight teeth and spiral bevel gears, worm gears and non-circular gears. The machine tool for machining the surface of gear teeth is called gear processing machine tool.

How to get this summer the machinery industry order

The machinery industry has a potential seasonal peak season. It seems to be a true portrayal of most manufacturers in the summer. Order reduction is a normal phenomenon. In the days when this order is small, it seems that it is suitable for us to seize the opportunity to complete the change of quality, or even create products that are suitable for the market. I think it’s the top priority to work on it.
Manage and produce higher quality equipment in more ways. The corresponding adjustment can be made through the feedback from the market in the earlier period. Continuous optimization of the equipment. The adjustment of the number of production types in the early stage of the workshop.
All in all, what we can do now is to cater for the next season.

What are the applications of hot melt adhesives?

Toys (adhesive, fixed, wiring, insulation); small box sealed boxes, packaging; handbag leather bags; small household appliances, wires, joints, connectors; sound, frame, label; hardware fixed; small paper adhesive and fixed; small ornaments, crafts, hairpins, etc.; electronic products fixed, adhesive, insulation; He needs to use the glue manually or semi automatically.

Household electrical appliance industry

The hot melt adhesive is widely used in the sealing and sealant of the refrigerator, the assembly of electronics and electrical appliances, etc.

Automobile industry

The manufacture of automobile headlights and rear lights, windscreens, doors and interior seals.

Filter industry

The hot melt adhesive machine is widely used in the air filter without partitions. The adhesive is firm and reliable, and the sealing is good. It meets the physical and chemical properties of the adhesive material.

Bottle cap bonding industry

Hot melt adhesive machine is widely used in the bottle cap adhesive industry, such as cosmetic bottle cap, liquor bottle cap, chain pendant adhesion and so on.

Non-woven fabric industry

Hot melt adhesive machine in diapers, adult incontinence supplies, sanitary napkins, medical protective clothing. It can be used with domestic and foreign equipment.

Packaging industry

The hot melt adhesive spray machine can be applied to the sealing of the upper and lower parts of the box and the packaging of the beverage straw, the laser paper and the coloured paper.

Packaging and labeling industry

Hot melt adhesive coater has been widely applied in trademark paper, adhesive tape, label double-sided tape, medical breathable adhesive tape and other fields.

Shoe industry

Hot melt adhesive spray machine is also an indispensable assistant for shoe material adhesion.

Medical dressing industry

Hot melt adhesive coating machine and other equipment in the application of transfusion adhesive, non-woven breathable adhesive tape, self adhesive wound dressing, perforated membrane adhesive tape and other medical dressing industry.

Clothing and clothing compound industry

Hot melt adhesive coater series products have been widely used in clothing, clothing, coating and coating industry, and have been well received by users.

Inspection method of surface defect of precision tube

A general term for all kinds of defects that appear on the surface of precision tubes and non-ferrous metals and affect the quality of products. There are many kinds of precision tubes, most of which are named by the morphology of the defects, and others are named for their reasons.
In precision tube production, products are often divided into two categories according to the production process of defects.
One is the poor quality of steel, such as abscission layer, scarring, cracking, crack, hairline and bubble. Most of these defects are caused by poor quality of ingot.
The other is the defects of processing operation, including folding, ear, pock, convex hull, scraping, indentation, pressing into iron oxide skin, burr and so on. This kind of defect is produced in the process of plastic addition.

The inspection methods used for precision pipes of various uses are clearly stipulated in the corresponding product standards, including:
(1) the naked eye examination. For general purpose products, visual inspection of precision tubes is made by visual inspection, and sometimes by means of “test shovel” or “trial grinding”.
(2) pickling examination. A product that is suitable for important purposes.
(3) shot peening examination. For special purpose steel.
(4) nondestructive testing. In accordance with its quality requirements, J, a product of special important use, uses eddy current inspection, magnetic powder detection, penetrant flaw detection and ultrasonic flaw detection to check the precision tube (see the physical inspection of defects).