Month: April 2020

One-stop 3D Printing and Rapid Prototyping Product  part

Essaii provides a range of high-quality 3D printing (additive manufacturing) services, including FDM, SLA, SLS and SLM. This allows 3D printing of plastics and metals and provides options for prototype design and production.
3D printing is a good way to create disposable parts or small batch production, and can be used to create complex geometric shapes, which is not possible with traditional manufacturing processes.
Advantages of 3D printing

1 Affordability: Because 3D printing uses only the required materials and does not require tools, it is one of the most affordable manufacturing processes in disposable parts or small batch production.
2 geometric shapes: trongse3D printers use computer-controlled nozzles to create parts layer by layer. They can be used to create highly complex shapes, including complex internal geometric shapes.
3 Efficiency: Once the parts are designed using CAD software, printing can be completed within a few hours without the need for a lengthy setup process.
4 Adaptability: Since 3D printed parts do not require tools, the risks involved in creating parts are small. If a fault is found after printing, it can be digitally corrected without replacing expensive tools.
5 Environmental factors: Although 3D printers require power to operate, they usually do not cause material waste. On the other hand, subtraction processes such as mechanical processing generate waste.
What is 3D printing?
3D printing (also known as additive manufacturing) is a manufacturing process that builds parts layer by layer. The computer sends instructions to the 3D printer, which deposits or hardens the material in a pre-programmed way and creates layers in turn.
There are several types of 3D printers, some of which are used to print plastic parts and others are used to print parts made of metal or other materials. Although these various 3D printing technologies are diverse, they share certain characteristics.
3D printing has enabled companies to use one-step manufacturing technology, which has revolutionized manufacturing. 3D printers can be installed in offices and small work areas, and require little training to operate. In addition, since the materials are reasonably priced and can be purchased in small quantities, the start-up cost is very low.
How to choose a 3D printing process
If you need help to find the best 3D printing process for you, you can establish a consultation and planning phase with our team of additive manufacturing experts.
All 3D CAD files you must print must be provided to the design and reviewed by the production team so that they can be optimized and manufactured to meet the design requirements. These requirements will differ between FDM, SLA, SLS, and SLM 3D printing, so make sure to optimize the CAD model for the 3D printing process you want to use.
3D printing prototype project
This is one of the projects we have done for a fashion design company. Initially, they ordered flexible prototypes in this type of polymer through SLS, which was very expensive. With the newly developed resin, we can produce flexible prototypes through SLA at a cost of only 1/5.
the reason? Okay, just because the prototypes of these other services are not

Computer numerical control China CNC machining is an automated manufacturing method that uses cutting tools to selectively remove material from the blank until a desired shape is obtained. It works by converting the digital model of the part into a series of computer instructions that control the movement of the machining tool to achieve the desired output. Because it is computer controlled, compared with other common manufacturing methods,China CNC machining can provide a higher level of versatility, efficiency, and accuracy. This makes it a popular manufacturing choice for a wide range of industries and applications.

Diverse process
There are many types of China CNC machine tools, and each machine tool has its own unique advantages and functions. Depending on the function of a particular machine, the number of axes and the direction of the cutting tool, different machining possibilities can be realized. Some of the most common China CNC machining processes include:
CNC milling
CNC milling uses a rotating multi-point tool to remove excess material from the workpiece when the workpiece is fed into the cutting tool. Rotating tools can be moved along different axes with high precision to create parts with complex geometries. Prototypes or final parts can be manufactured quickly with high accuracy and repeatability
Vertical CNC machining
Vertical CNC machining is a form of milling where the spindle axis and related cutting tools are oriented vertically relative to the machine bed. The cutting tool points downward from the tool holder and is usually used to cut the top of the workpiece surface.
Horizontal CNC machining
Horizontal China  CNC machining (also a form of milling) uses a tool mounted on a horizontal spindle. The tool comes out from the side of the tool holder and crosses the side of the workpiece surface, so that the chips fall from the table.
Different processing 3ERP
CNC turning
In contrast to milling, CNC turning uses a single point milling cutter to remove material from a rotating workpiece fixed in a chuck. CNC lathes or lathes rotate the workpiece along a linear motion to feed the tool, removing excess material to produce a highly accurate round or tubular shape. Like milling, turning can quickly create prototypes and final parts.
Wire electrical discharge machining (EDM)
Wire cutting machine tools are used to cut conductive materials. The live wire fixed between the two mechanical guides serves as one electrode, and the workpiece being cut serves as the second electrode. The discharge generated between the welding wire and the workpiece generates sparks, which cut the material from the workpiece. Since no cutting force is involved, the wire-cut electric discharge machine is very suitable for producing small and delicate parts.
metal processing
Metal CNC machining uses computer-controlled cutting tools to selectively remove material from metal workpieces and shape it into the desired shape. Many common metals are compatible with CNC machining processes such as aluminum, copper, and steel.
Plastic processing
China CNC machining can also be used to create custom-designed components and products from various types of plastics (including acrylic, polycarbonate, polypropylene, and many other plastics). Plastic processing may involve one or more of the above processes, which create the design shape by selectively cutting material from the plastic workpiece.
Vertical CNC machining
Vertical CNC machining
Horizontal CNC machining
Horizontal CNC machining
CNC turning
CNC turning

Compared with castings and forgings, the processing of precision stamping parts has obvious advantages. Metal stamping can produce workpieces that are difficult to manufacture with other processing methods. Due to the use of precision molds, the precision of the workpiece can reach the micron level, and the repeatability is high. In the processing process, we need to standardize the operation in principle to ensure the quality of our processed products. Common precautions for processing precision metal stamping parts, let's take a look together below.

First, the stamping die problem
The quality of precision metal stamping is largely determined by the stamping die. The quality of a metal stamping part is mainly affected by the mold design ideas and mold materials. If the quality of the stamping die is not good, it will lead to a significant reduction in production efficiency, stamping accuracy and service life.

Second, the transportation of stamping parts
When the metal stamping parts are transported, they must be packed well. Because during the logistics transportation process, the stamping parts will be deformed or scratched due to bumps.

Third, the stamping plant production problems
Attention should also be paid to the level of workers' stamping operations. Many metal stamping factories also do not have a perfect training system, which results in workers having no awareness of product quality and operating punches in violation of regulations, resulting in product quality problems. On the other hand, the wages of stamping workers are low, the labor intensity is high, and the working environment is harsh, and the product quality will be affected. In the stamping plant, bumps and scratches on the surface of the product caused by the rough actions of the workers can often be seen.

Fourth, enterprise management issues
The quality inspection department of precision metal stamping enterprises plays a vital role in the entire enterprise, and the quality inspection department must be independent. The quality inspection departments of many enterprises are affiliated with other departments and cannot be independent. This has caused great problems for the quality control of metal stamping parts.

What is metal stamping

Rockwell hardness tester is used for hardness testing of metal stamping. Small, stamped parts with complex shapes can be used to test small planes and cannot be tested on ordinary desktop Rockwell hardness testers. PHP series portable surface Rockwell hardness tester is very suitable for testing the hardness of these stampings. Alloy stampings are the most commonly used parts in metal processing and machinery manufacturing. The stamping part processing is a processing method that uses a die to separate or shape the metal strip. Its application range is very broad.

metal Stamping parts processing includes blanking, bending, deep drawing, forming, finishing and other processes. The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal strip materials, such as carbon steel plates, alloy steel plates, spring steel plates, galvanized plates, tinned plates, stainless steel plates, copper and copper alloy Plate, aluminum and aluminum alloy plate, etc.

1. Hardness testing of stamping parts

The main purpose of hardness testing of stamping parts is to determine whether the annealing degree of the purchased metal sheet is suitable for the subsequent stamping part processing. Different types of stamping part processing techniques require plates of different hardness levels. The aluminum alloy plate used for stamping parts can be tested with a Webster hardness tester. When the thickness of the material is greater than 13mm, the Barcol hardness tester can be used. The pure aluminum plate or the low hardness aluminum alloy plate should use the Barcol hardness tester.

2. Hardness testing of stamping parts mold

The main material of the stamping die is die steel (including tool steel and high-speed steel), and sometimes carbide is used.

Stamping parts molds usually require high hardness and wear resistance, heat treatment is essential.

What is CNC machining?

CNC machining is exponentially controlled machining, a method that uses digital information to control mechanical motion and machining processes. Traditional machining is done by ordinary machine tools operated manually. During processing, mechanical tools are used to cut metal by hand, and tools are used to measure the accuracy of products using a calibrator. However, traditional manual processing is far from meeting production requirements.

The CNC processing quality is stable, the surface texture of the finished product is clear, the metal texture is firm, smooth and smooth, without scratches and edges, and the heat dissipation coefficient of the raw material has little resistance. It will not change with precision machining. Manufacturers can adjust specific processes to improve their heat dissipation performance. For example, oxidation, stretching, cooking, sand blasting and other processes can be performed under numerical control operations.

CNC processing adopts imported equipment; the products processed by the automatic lathe parts are processed with accurate thread, no slip, tolerance up to 0.01 mm, smooth appearance, no burrs and sticky hands. CNC machining is carried out in strict accordance with the size specifications of drawings and samples. The tolerance accuracy is up to 0.01 mm. Each batch of products can be delivered to customers after 3 accuracy tests. The defective rate is strictly controlled within 1/1000.

The CNC machining center automatic control system can usually control the CNC lathe to complete the automatic start and stop, commutation and speed change of the spindle bearing according to the digital program flow instructions. It can intelligently control the feed speed, direction and production processing distance for production processing. Select the size of the CNC blade and change the cutting amount and walking path to complete various auxiliary actions required for production and processing.

The structure of CNC machining CNC lathe also includes spindle bearing box, tool holder, feed transmission device, machine tool itself, hydraulic transmission system, refrigeration system, lubrication system and other parts. It is just that the feed system of CNC lathe and the feed system of horizontal lathe are essentially different in structure type. The composition diagram of the mechanical structure of a typical CNC lathe is the same.

CNC machining is the process that the control system sends out instructions to make the cutter make various movements that meet the requirements. The technical requirements such as the shape and size of the workpiece and the requirements of the processing technology are expressed in the form of numbers and letters. The quality of CNC processing is stable, the surface texture of the finished product is clear, the metal texture is firm, smooth and flat, without scratches and edges, and the raw material has a small coefficient of heat resistance and will not change with CNC processing. Manufacturers can adjust specific processes to improve their thermal performance. For example, oxidation, stretching, cooking, sand blasting and other processes can be performed under numerical control operations.

In the case of multi-variety and small batch production, CNC machining quality is stable and production efficiency is high, which can reduce the time for production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the optimal cutting amount. It can process complex profiles that are difficult to process with traditional methods, and can even process some unobservable processed parts.

The above explanation is about CNC processing. I hope it will be helpful to you after reading it. If you want to know more about CNC processing, please feel free to consult customer service online or call our service hotline (upper right corner of the website). Consultation, we will wholeheartedly provide you with quality service!

Reasons why China CNC machining is widely used

China CNC machining is to use the automatic control system to install digital program flow commands to control the automatic start and stop, commutation and speed change of China CNC machine tool bearings. You can choose a CNC blade, you can change the cutting amount and walking path of the CNC blade, and complete various auxiliary actions required for life-long processing. CNC machining can greatly reduce the total number of tooling and produce parts with complicated processing methods, only the process flow needs to be changed. CNC machining is relatively stable and will not cause machining deviations.

CNC machining can produce complex aluminum parts, and even produce processed parts. Moreover, it can produce a variety of varieties, with high production efficiency, saving labor costs, and at the same time it can realize a variety of mass production. The CNC machining control system can use the control codes or other symbolic instruction rules to logically process the program, use the computer to decode the program, and then move the machine tool and machining parts. After cutting the tool, the blank is processed into semi-finished parts, etc. CNC cutting is not only a more reasonable processing method, but also a common process for aluminum alloy precision machining. Select vertical milling cutter, helical interpolation and contour cutting interpolation with multi-directional cutting function, select fewer tools to process a small number of holes.

In the CNC processing process, we must master the processing skills of craft paint. Choose a reasonable amount of cutting, and personnel choose the cutting speed according to the requirements of the processing material, hardness, cutting conditions, material type, cutting depth, etc. These conditions are necessary to reduce machine wear. Choosing the right tool Generally speaking, when using rough turning, it is best to choose a high-strength tool to better meet the requirements of rough turning. Choosing reasonable fixture parts should fully meet the needs of the machine to reduce unnecessary positioning errors, and thus select special fixtures to accommodate items. Acknowledge a reasonable process. Shorten the processing stroke as much as possible to reduce machine wear.

In CNC machining, system programs usually directly implement specific automatic speed control functions. In this way, the acceleration and deceleration characteristics of the system should be changed, or the CNC program should be modified by the addition and subtraction control, so that ordinary users cannot make the CNC machine tool have the best acceleration and deceleration performance according to their own wishes. Therefore, the flexible acceleration and deceleration control method we proposed adopts the database principle, divides acceleration and deceleration control into acceleration and deceleration description and execution, and separates the acceleration and deceleration description from the system program. In the numerical control system software, a general control channel independent of the acceleration and deceleration database is designed, which can independently complete the acceleration and deceleration calculation and trajectory control.

The above explanation is the reason why CNC machining is widely used. I hope it will be helpful to you after reading it. If you want to learn more about CNC machining, please contact customer service online or call our service hotline ( The upper right corner of the website) for consultation, we will wholeheartedly provide you with quality service!

What are the requirements of CNC parts processing technology?

The rotation speed, feed speed and cutting speed of the spindle of the CNC part machining center are mainly determined by the tool, and the setting amount of different tool parameters for processing the same material is also different. However, the tool will provide the parameters set at the time of purchase. For example, different imported tools provide parameters for processing different materials, such as maximum feed rate, cutting volume, and cutting speed.

Cutting speed, feed speed and cutting depth are the three elements of CNC parts machining cutting conditions, which directly lead to tool damage. As the cutting speed increases, the temperature of the cutter head will increase, resulting in mechanical, chemical, and thermal wear. If the cutting speed is increased by 20%, the tool life will be reduced by 1/2. The relationship between the feed conditions for CNC part machining and the wear on the back of the tool occurs within a very small range. However, the feed rate is high, the cutting temperature increases, and the rear wear is large. Its impact on the tool is less than the cutting speed. The influence of cutting depth on the tool is not as great as the cutting speed and feed, but when the cutting depth is small, a hardened layer will be formed on the material being cut, which will also affect the service life of the tool.

During the machining of CNC parts, the cutting speed needs to be selected according to the material to be processed, hardness, cutting state, material type, feed rate, cutting depth, etc. The selection of suitable processing conditions is based on these factors. Regular and stable wear is the ideal condition to achieve longevity. CNC parts processing requires reasonable selection of fixtures. The parts should fully meet the needs of the machine to reduce unnecessary positioning errors, so select special fixture clamping tools. The processing route is the movement path and direction of the tool relative to the part during the processing of the index-controlled machine tool. It should be able to ensure the machining accuracy and surface roughness requirements, and the machining route should be shortened as much as possible to reduce the tool empty travel time.

When CNC parts are processed for face milling, non-reground carbide end mills or end mills should be selected. In general milling, try to use two passes. The first pass is preferably rough milling with an end mill and continuous passes along the workpiece surface. End mills and end mills with carbide inserts are mainly used for machining bosses, grooves and box opening surfaces. Round knives and round knives (also known as round head knives) are commonly used for machining curved surfaces and variable bevel profiles. However, ball cutters are mainly used for semi-finishing and finishing. Before CNC parts are processed, the processing route should be determined for the waist. Shorten the processing route as much as possible to reduce machine wear.

The above explains the requirements of CNC parts processing technology. I hope it will be helpful to you after reading. If you want to learn more about CNC parts processing, please feel free to consult customer service online or call our service hotline ( The upper right corner of the website) for consultation, we will wholeheartedly provide you with quality service!

What are the reasons for errors in CNC machining parts

During the operation of the CNC machining parts center, there is a certain gap between the screw and the nut. As the operating time of the equipment increases, the gap gradually increases due to wear. Therefore, the corresponding gap compensation of the reverse movement is the main factor to overcome the shoulders generated on the machining surface. The gap measurement usually uses the dial gauge measurement method, which requires error control. However, it should be noted that the gauge base and the gauge rod should not extend too high or too long, because during the measurement process, due to the long cantilever, the gauge base will be moved by force, resulting in inaccurate counting and compensation values. error.

Improper tool selection in CNC machining can also cause dimensional errors. During the cutting process, the tool removes material through the main cutting edge. However, after the arc passes through the quadrant and the arc is tangent to the second cutting edge of the tool, the second cutting edge may participate in cutting. Therefore, when selecting or grinding a tool, the wedge angle of the tool must be carefully considered.

During CNC machining, if the machining allowance is not uniform, an error may occur. In the process of achieving part design performance, whether the machining allowance of the CNC machining surface is even or not is also an important reason for whether the molding surface can meet the design requirements. Because the machining allowance is not uniform, it is easy to cause "remapping" errors. Therefore, for parts with high surface shape requirements, the manufacturing allowance should be as uniform as possible before forming, or multiple contours should be processed to meet the design requirements.

CNC machining has clear regulations on the workshop environment, and the heat source needs to be reduced: the focus is on the spindle bearing speed, clearance adjustment and reasonable preload. For thrust bearings and tapered roller bearings, due to their poor working conditions and high heat generation, thrust angular contact ball bearings can be used when necessary to minimize friction and heat generation of certain parts. CNC machining also requires heat insulation: keep the heat source away from the spindle, such as isolating the motor and transmission, using separate transmission, etc. CNC machining also needs heat dissipation: strengthen lubrication and cooling, and use oil cooling, air cooling and other methods to speed up heat dissipation. Reducing the influence of thermal deformation: No matter which method is adopted, it can only reduce thermal deformation, and it is difficult to completely eliminate thermal deformation. Therefore, measures should also be taken to reduce the effects of thermal deformation.

The above explanation is the reason for the error of CNC machining parts. I hope it will be helpful to you after reading. If you want to learn more about CNC machining parts, please contact customer service online or call our service hotline (Upper right corner of the website) For consultation, we will provide you with quality service wholeheartedly!