CNC machining of general curved parts usually uses ball end mills. When the ball end milling cutter is used to machine the curved surface, the cutting process is performed by the line cutting method, that is, the milling cutter processes the curved surface line by line along the coordinate axis direction or the parameter axis direction. After each line is processed, the milling cutter moves a line spacing until the entire surface is finished. . The size of the line spacing of the cutting point directly affects the machining accuracy and machining efficiency of the surface. A line spacing value less than the actual cutting width will increase the machining time and also result in a decrease in programming efficiency and a program expansion. When the line spacing value is larger than the actual cutting width of the tool, the surface residual ridge height of the curved surface is increased, so that the surface roughness value and the error are increased. First, the curved three-axis CNC machining line cutting method analysis 1. Surface three-axis CNC machining line cutting method produces the residual ridge height when the surface is cut by the ball-end milling cutter, it will leave a relatively obvious on the machined surface. Scallop height. (1) Analysis of the height of the residual curved surface of the convex surface For a convex curved surface, a, b, and g are the tool points. The radius of curvature of point a or b can be approximated as a circle. The height of the residual ridge is analyzed as follows: H=of-fc -od H is the height of the residual ridge, r is the radius of the tool, S is the cutting line spacing, and R is the radius of curvature of the surface. It can be seen from the above analysis that the height of the residual ridge is determined by the tool radius r and the cutting line spacing S. The larger the tool radius r is, the smaller the residual ridge height is; the smaller the cutting line spacing S is,

The tool path is completely customized according to the special requirements of the stator track. Moreover, through coordinate transformation, three-axis CNC milling is used to process complex lateral concave surfaces. The stator track NC programming requirements are met, which is unmatched by the universal automatic programming software. The surface texture of the processed stator track is consistent with the movement law of the ball plug, and the surface is good and the quality is high. Solving the problem of three-axis CNC milling of complex lateral concave curved surface such as stator track, the difficulty lies in the design and mathematical calculation of the tool path. However, rational planning of the process, tool, coordinate transformation, planning tool path and accurate mathematical calculation can fully play. The macro program is concise, flexible and efficient. The complicated lateral concave surface machining such as the stator track can be completed by using a three-axis CNC milling machine without cutting the tool axis, which greatly reduces the cost. At the same time, the development of macro programs has increased the system functions and expanded the scope of machine tools. Therefore, the NC machining programming of the ball plunger pump stator track provides a useful reference for the processing of complex lateral concave surfaces.

The guide sleeve is an important part in the hydraulic support of the coal mining machinery industry. The hydraulic cylinder piston and the guide sleeve are a pair of friction pairs. If the dimensional accuracy is not high, the piston will cause friction due to friction and wear during long-term reciprocating operation in the hydraulic cylinder. The damage and loss of the auxiliary surface, especially the damage and loss of the working face of the guiding sleeve is more serious, and finally the hydraulic bracket can not work normally, so it is necessary to improve the geometrical precision of the guiding sleeve while improving the processing efficiency. In the context of high-precision and high-speed development of CNC machine tools, how to ensure and improve the dimensional accuracy of the machined workpiece and the high-spindle precision of the machine tool spindle are the problems that designers need to face. With the rapid development of the domestic machine tool industry, high precision, High-efficiency CNC machine tools are increasingly favored by users. In recent years, there have been many types of CNC lathes on the market, such as twin-spindle, double turret, double-slide saddle, intermediate drive, etc. These machines are often effective in improving efficiency, but they have general effects in improving accuracy. The basic principle of the two-knife high-efficiency machine tool puts forward a new idea and new structure in improving the machining precision of the guide sleeve, and compares the structure with the existing structure. 1. Traditional machine tool lateral feeding mode and characteristics The traditional CNC lathes are all single-turret configuration, the flat bed CNC lathe is equipped with a front turret, and the slant bed CNC lathe is equipped with a rear turret. Both axes are unidirectionally stressed when feeding i

methyl methacrylate (PMMa) is commonly known as plexiglass. Today, we will carefully understand the main points of PMMA's injection molding process. Due to the short surface hardness of PMMA, easy to rub, low impact resistance and poor molding flow performance, PMMA modification has appeared one after another. For example, copolymerization of methyl methacrylate with styrene and butadiene, blending of PMMa with PC, and the like. 372 plexiglass is obtained by copolymerization of methyl methacrylate and styrene. PMMa resin is a non-toxic and environmentally friendly material that can be used to produce tableware, sanitary ware, etc., with good chemical stability and weather resistance. 1, plastic processing PMMa has a certain water absorption, its water absorption rate is 0.3-0.4%, and injection molding must be below 0.1%, usually 0.04%. The presence of moisture causes bubbles, gas ray, reduced transparency, and the like in the melt. So dry it. The drying temperature is 80-90 ° C and the time is 3 hours or more. Recycled materials can be used 100% in some cases. The actual amount depends on the quality requirements, usually over 30%. Recycled materials should avoid contamination and otherwise affect the transparency and the nature of the finished product. 2, injection molding machine selection PMMa has no special requirements for injection molding machines. Because of its high melt viscosity, deeper grooves and larger diameter nozzle holes are required. If the strength of the product is required to be high, the low temperature plasticization is carried out using a screw having a large aspect ratio. In addition, PMMa must use a dry hopper to store material. 3, mold and gate design The mold temperature can be 60 ° C -80 ° C, the diameter of the main channel should match the inner taper, the best angle is 5 to 7, if you want to injection 4mm or more products,

Technology and tooling of CNC turning The processing technology of CNC lathes is similar to that of ordinary lathes, but since CNC lathes are clamped once, all automatic turning processes are completed automatically, so the following aspects should be noted. 1. Reasonable choice of cutting amount For high-efficiency metal cutting, the material to be processed, cutting tools, and cutting conditions are the three major elements. These determine the processing time, tool life and processing quality. The cost-effective processing method must be a reasonable choice of cutting conditions. Three elements of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. As the cutting speed increases, the tool tip temperature will rise, and mechanical, chemical, and thermal wear will occur. Cutting speed increased by 20%, tool life will be reduced by 1/2. The relationship between the feed conditions and the wear on the back of the tool occurs within a very small range. However, the feed rate is large, the cutting temperature rises, and the rear wear is large. It has less influence on the tool than the cutting speed. Although the depth of cut has no effect on the cutting tool and the feed rate is large, when cutting at a small depth of cut, the hardened layer of the material being cut will also affect the life of the tool. The user should select the cutting speed to be used according to the processed material, hardness, cutting status, material type, feed amount, cutting depth, etc. The selection of the most suitable processing conditions is selected on the basis of these factors. Regular and stable wear and tear to reach the life is the ideal condition. However, in actual operations, the choice of tool life is related to tool wear, dimensional changes to be processed, surface quality, cutting noise, processing heat, etc. When determining the processing con

Technology and tooling of CNC turning The processing technology of CNC lathes is similar to that of ordinary lathes, but since CNC lathes are clamped once, all automatic turning processes are completed automatically, so the following aspects should be noted. 1. Reasonable choice of cutting amount For high-efficiency metal cutting, the material to be processed, cutting tools, and cutting conditions are the three major elements. These determine the processing time, tool life and processing quality. The cost-effective processing method must be a reasonable choice of cutting conditions. Three elements of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. As the cutting speed increases, the tool tip temperature will rise, and mechanical, chemical, and thermal wear will occur. Cutting speed increased by 20%, tool life will be reduced by 1/2. The relationship between the feed conditions and the wear on the back of the tool occurs within a very small range. However, the feed rate is large, the cutting temperature rises, and the rear wear is large. It has less influence on the tool than the cutting speed. Although the depth of cut has no effect on the cutting tool and the feed rate is large, when cutting at a small depth of cut, the hardened layer of the material being cut will also affect the life of the tool. The user should select the cutting speed to be used according to the processed material, hardness, cutting status, material type, feed amount, cutting depth, etc. The selection of the most suitable processing conditions is selected on the basis of these factors. Regular and stable wear and tear to reach the life is the ideal condition. However, in actual operations, the choice of tool life is related to tool wear, dimensional changes to be processed, surface quality, cutting noise, processing heat, etc. When determining the processing con

When we were amazed at the birth of a new 3D printer, we might have forgotten a powerful software system behind their hardware, quietly analyzing, optimizing, and reporting important information related to the additive manufacturing process. This enables 3D printing scale to be achieved. According to China's 3D printer network, 3D printing service provider FATHOM recently acquired the ownership of a data analysis software from an American startup, Inc., Inc., in order to improve service quality and reduce costs. With this software, FATHOM can obtain data feedback and analysis reports for each part of 3D printing, making it effective to streamline and optimize 3D printing services. FATHOM is a Seattle-based company that provides high quality, high speed prototyping services to companies around the world, including plastic 3D printing and metal 3D printing (FDM, PolyJet, SLA, SLS, DMSL), CNC machining, fast Mold making, 3D printing mold making, injection molding, and more. It is also an authorized partner and distributor of Stratasys 3D printers. In 2011, FATHOM also set up SmartQuote, a very useful online platform for quoting and ordering 3D printing parts. Rich Stump, co-founder and head of FATHOM, said: "In order for the industry to continue to move forward, software upgrades must be done. Through data analysis, we can enhance performance, reduce costs, and scale these cutting-edge technologies. " Research Director Carlo Qui? onez added: "FATHOM is working to develop a next-generation product data management (PDM) system that future engineers can analyze for each 3D printed part."

1. The solution of BWS injection type servo driver on the injection molding machine The injection molding machine with hydraulic system is divided into vertical and horizontal. 1.1 Solutions for vertical injection molding machines In the vertical injection molding machine with dozens of grams, the oil pump uses a gear pump, the capacity of the motor is also small, and the electrical control circuit is relatively simple. During installation, connect the dedicated servo driver of the injection molding machine directly to the power supply circuit of the motor, and then send the signal of the flow proportional valve (0 ~ 1A) to the corresponding port of the inverter after being converted into a 4 ~ 20mA signal. With changes in the processing process, the flow of hydraulic oil is also changing. Generally speaking, it is better to use a flow signal with a relatively larger change in relative value as the control signal. The change in the control signal has a larger range of frequency adjustment for the servo drive; while the change in the relative value of the pressure signal is less, the range for the frequency adjustment of the servo drive is smaller. . If the range of servo drive frequency adjustment can not meet the technological requirements, you can use the servo drive function "frequency gain" to adjust. The special servo driver for injection molding machine adds 0 ~ 1A signal conversion link on the basis of the servo driver, which is more convenient to use. 1.2 Solutions for horizontal injection molding machines Above 60 grams are all horizontal injection molding machines, 60 to 500 grams injection molding machines, some are one oil pump, some are two oil pumps. An oil pump injection molding machine, the process of installing a dedicated servo drive for the injection molding machine is the same as the transformation of the vertical injection molding machine: the signal of 0 to

Ningbo Rongna Technology Co.,Ltd offers CNC machine services for clients who require producing precision metal parts. CNC machining is one of the fastest way to build quality market-testing prototypes and production parts. Read on to learn more about the benefits of our CNC machine services. Subtractive technologies are often thought of as old school, but Ningbo Rongna Technology Co.,Ltd is bringing CNC Machining into the next generation. Our leading-edge machines use the latest technology to turn your 3D CAD file into a high-quality, precision production part in as fast as 24 hours. Perfect for low-volume to production quantities Smooth finishes on a solid metal or plastic parts, produced exactly to design specifications Offers high-precision tolerances and easily reproducible processes Lead times of less than a week

2 NC code identification method and test grammar <br> <br> CNC machine is to work in accordance with the NC program, NC program recording the process sequence to the processing part, trajectory and orientation, the amount of displacement parameters (speed, feed Amount, depth of cut) and auxiliary action (feeding, shifting, supply of cutting fluid). A complete CNC machining program consists of several blocks, which are generally represented as a single line of code in the program. The block has a certain format, that is, the arrangement, writing method and order of the words in the block, as well as the length limit and regulation of each word and the entire block. Different CNC machine control systems often have different block formats. If the format does not match, the CNC system will not accept it. At present, the program format commonly used at home and abroad is a variable block "word address format". Each word in the block begins with an address character, followed by a symbol and a number. The order in which the code words are arranged is not strictly required. Unwanted code words and the same recurring words as the previous paragraph may not be written. The format specified by the ISO4683-1-01-1982 standard formulated by the International Organization for Standardization is as follows: N...G...X±...Y±...Z±...I±... J±...K±...M...S...T... F... Where N indicates the serial number: G command is called the preparation function command, which is used to specify the relative motion trajectory of the tool and the workpiece, the machine coordinate system, the coordinate plane, the tool compensation, the coordinate offset, and other machining operations: X, Y, Z are coordinates The address of the axis: I, J, K are used to describe the coordinates of the arc in the machining: M is called the auxiliary function command: F, S, T are the feed speed command, the spindle speed command and the tool number command. The simula

General concept roughing Roughing is the purpose of quickly cutting the blank allowance. In roughing, a large feed and a maximum depth of cut should be used to remove as much of the chips as possible in a shorter period of time. Roughing requires less surface quality. The blunt standard of the tool is generally a significant increase in the cutting force, that is, the wear width VB of the subsequent flank is standard. finishing The main consideration in finishing is the surface quality of the workpiece rather than the amount of chips. A small depth of cut is usually used for finishing. The secondary cutting edge of the tool often has a special shape, such as a wiper. Depending on the machine tool used, the cutting method, the workpiece material and the tool used, the surface roughness can be reached at a level of Ra1.6 μm, and even under excellent conditions, Ra can be achieved at 0.4 μm. The amount of wear on the flank of the tool during finishing is no longer the main criterion, it will give way to the surface quality of the workpiece. 2. Milling method Climb milling The component of the cutting speed of the cutting point in the feed direction in the feed direction coincides with the direction of the feed speed. Climb milling is a processing method often used to obtain good surface quality. It has the advantages of small flank wear and smooth running of the machine tool, and is suitable for processing high alloy steel under good cutting conditions. Instructions for u

General concept roughing Roughing is the purpose of quickly cutting the blank allowance. In roughing, a large feed and a maximum depth of cut should be used to remove as much of the chips as possible in a shorter period of time. Roughing requires less surface quality. The blunt standard of the tool is generally a significant increase in the cutting force, that is, the wear width VB of the subsequent flank is standard. finishing The main consideration in finishing is the surface quality of the workpiece rather than the amount of chips. A small depth of cut is usually used for finishing. The secondary cutting edge of the tool often has a special shape, such as a wiper. Depending on the machine tool used, the cutting method, the workpiece material and the tool used, the surface roughness can be reached at a level of Ra1.6 μm, and even under excellent conditions, Ra can be achieved at 0.4 μm. The amount of wear on the flank of the tool during finishing is no longer the main criterion, it will give way to the surface quality of the workpiece. 2. Milling method Climb milling The component of the cutting speed of the cutting point in the feed direction in the feed direction coincides with the direction of the feed speed. Climb milling is a processing method often used to obtain good surface quality. It has the advantages of small flank wear and smooth running of the machine tool, and is suitable for processing high alloy steel under good cutting conditions. Instructions for u

In recent years, many injection molding machine manufacturers rushed to develop energy-saving injection molding machine with new products, especially in China, many manufacturers have introduced flaunt pump variable configuration to achieve the role of energy-saving injection molding machine. However, behind the so-called "energy saving" there is actually a limit to conditions and, if other costs must be paid, it must be carefully chosen. Variable pump is the only choice for energy saving injection molding machine? In fact, the injection molding machine energy saving methods are many, from special oil circuit design, hybrid (electric servo screw drive), the whole machine servo control (all electric), double pump, variable frequency motor, First, manufacturers should compare and evaluate multiple parties to choose the most energy-saving type that meets their own needs and benefits. Variable machine must be substantially more energy-efficient than the average machine? The principle of variable machine is to use the variable pump random station needs, provide the appropriate flow, in order to achieve the energy saving effect. However, this energy-saving effect is almost impossible to achieve when injection molding general products and thin-walled products, especially at high-speed production. Only an energy-saving product which requires a long time of high pressure holding is obvious. This is an ordinary plastic machine The factory is well known conclusion. However, its reaction speed and stability are poor, and will increase maintenance costs, reduce the negative effects of machine life, but it is unclear to many injection molding manufacturers. Because of the unclear understanding, it is easy to fall into the erroneous zone that "all products using the variable machine will be able to save a lot of energy." Therefore, when considering whether to adopt a variable energy-saving machine, it is necessary to confirm whether the product ty

2 NC code identification method and test grammar <br> <br> CNC machine is to work in accordance with the NC program, NC program recording the process sequence to the processing part, trajectory and orientation, the amount of displacement parameters (speed, feed Amount, depth of cut) and auxiliary action (feeding, shifting, supply of cutting fluid). A complete CNC machining program consists of several blocks, which are generally represented as a single line of code in the program. The block has a certain format, that is, the arrangement, writing method and order of the words in the block, as well as the length limit and regulation of each word and the entire block. Different CNC machine control systems often have different block formats. If the format does not match, the CNC system will not accept it. At present, the program format commonly used at home and abroad is a variable block "word address format". Each word in the block begins with an address character, followed by a symbol and a number. The order in which the code words are arranged is not strictly required. Unwanted code words and the same recurring words as the previous paragraph may not be written. The format specified by the ISO4683-1-01-1982 standard formulated by the International Organization for Standardization is as follows: N...G...X±...Y±...Z±...I±... J±...K±...M...S...T... F... Where N indicates the serial number: G command is called the preparation function command, which is used to specify the relative motion trajectory of the tool and the workpiece, the machine coordinate system, the coordinate plane, the tool compensation, the coordinate offset, and other machining operations: X, Y, Z are coordinates The address of the axis: I, J, K are used to describe the coordinates of the arc in the machining: M is called the auxiliary function command: F, S, T are the feed speed command, the spindle speed command and the tool number command. The simula

Since its birth in the 1980s, 3D printing has gone through nearly 30 years. This technology has been mentioned repeatedly this year, and various products have emerged endlessly: ballpoint pens, high heels, game dolls ... American John Nicol even established a company called MakerPlane, hoping to use 3D printing and open source hardware to help People complete plans to build personal airplanes. Some people say that 2012 may be the year of 3D printing. Sculpteo of the United States continues its development for 3D printing. According to a report in Wired magazine, in order to promote its 3D printing service, Sculpteo launched an iPhone application called 3DPCase, which can help users design their own iPhone cases. Sculpteo will print out the actual objects according to the model submitted by users, and then send them to them. The working principle of 3DPCase is very simple, almost the same as the puzzle ?? The user chooses one of the five existing templates, and then customize the final product by changing the shape, changing the color, or adding patterns and text. With proficiency, all operations can be controlled within a minute. The price of the entire service starts from 14.99 USD. The seemingly simple operation of 3DPCase actually contains a lot of significance for progress. In the past, the complicated and complicated CAD modeling was completely simplified, and the simple stitching operation was presented to the user, which shortened the process and also reduced the cost. Using 3DPCase The price of the designed mobile phone shell is lower than the price quoted by 3D printing template design websites such as Thingiverse and Shapeways. 3D printing Clément Moreau, co-founder and CEO of Sculpteo, said the company hopes to bring this technology closer to the general public by reducing the ti

"CNC Lathe Thread Turning Machining Technology" Many techniques are still very particular in the CNC turning machining of CNC turning lathes. Here comes from Suzhou Meiji Precision Machinery Co., Ltd. to bring you professional CNC lathe machining, CNC lathe threading Turning, CNC lathe machining technology thread turning technology. First of all, the advantages of CNC lathe thread turning are: the surface roughness is less than turning, milling and grinding; the surface of the rolled thread can be hardened due to cold work and can improve the strength and hardness; CNC turning machine thread turning material utilization rate is high; productivity Compared with the cutting process, it has grown exponentially and is easy to be automated; rolling die life is very long. However, the rolling thread requires that the hardness of the workpiece material does not exceed HRC40; the dimensional accuracy of the blank is required to be high; the precision and hardness of the rolling die are also required to be high, and the manufacture of the die is difficult; and it is not suitable for asymmetric thread rolling. Secondly, the CNC turning machine thread turning method has the following, according to the different molds, thread rolling can be divided into two types of thread rolling and thread rolling: Two threading threads with two thread-shaped threads are staggered with 1/2 thread pitch relative arrangement. The static plate is fixed and the moving plate makes a reciprocating linear motion parallel to the static plate. When the workpiece is fed between the two plates, the moving plate advances and presses the workpiece to plastically deform the surface into threads. There are three types of thread rolling: radial thread rolling, tangential thread rolling, and rolling head rolling. Radial thread rolling: Two (or three) thread rolling wheels with thread profiles are mounted on mutually parallel shafts, the workpiece i

3D printing construction technology helps Iraq to rebuild after the war Gulliver mini 3D printing world is amazingly unveiled in New York Times Square HP MJF 3D printer multi-jet fusion 3D printing technology Canada has 216,000 technology talent gap 3D printing bears the brunt of 3D printing fetus project Companies in entrepreneurial circles using 3D printing technology need to prevent content from being stolen or copied. 13-year-olds use 3D printing to invent beach storage and apply for international patents. Liquid glass into 3D printing new materials to show ultra-complex and precise structure

How to produce shell products with no melting marks, no flow marks, no streamlines, no sink marks, and high surface gloss is particularly important for flat panel TVs, computer LCD monitors, air conditioners, and automotive interior parts. Using high gloss injection molding technology can solve this problem well. The principle of high-light injection molding is: The mold is heated before the mold is closed and the mold is closed. After the mold is closed, the temperature reaches the set condition and injection is performed. During the injection process, the mold continues to maintain a high temperature, so that the glue can maintain good fluidity in the mold during injection. After the injection is completed, the temperature of the mold is cooled when the pressure is maintained, and the cooling time of the product can be greatly shortened, thereby improving the production efficiency. Steam-free high-gloss injection molding technology currently belongs to an advanced production process in China. As this technology greatly improves the surface quality and surface strength of the products, it can eliminate the subsequent spraying or painting processes, protects the environment and the human health of the operators, and reduces the cost of the process due to the reduction of the process flow. Processing costs save energy and materials while significantly reducing production costs. The traditional method is to use a mold temperature machine to warm the mold, but the shortcomings of this method are as follows: 1) Unable to meet the need for rapid temperature increase and rapid temperature reduction in high-gloss injection molding; 2) The heating rate is small, and the weld marks on the surface of the product can only be reduced and cannot be eliminated; 3) The higher the hardness of the plastic, the worse the flo

Electrolytic aluminum is a method of smelting metallic aluminum, and aluminum oxide is generally decomposed into metallic aluminum by a large current in an electrolytic cell. Aluminum ingots are divided into high-purity aluminum ingots, aluminum alloy ingots and remelted aluminum ingots according to different components; they can be divided into round ingots, plate ingots, bar ingots, and T-shaped ingots according to their shapes and sizes. Aluminum is a silver-white metal, and its content in the earth's crust is second only to oxygen and silicon in third place. Aluminum has a low density and is called light metal. Aluminum is a non-ferrous metal with high output and usage. It is second only to steel in the world. The density of aluminum is about 1/3 of that of steel and copper. Due to the lightness of aluminum, it is commonly used in land, sea, and air transportation in manufacturing, trains, subways, automobiles, airplanes, ships, and rockets to reduce its own weight and increase its load. Similarly, aluminum has a significant position in military products. Aluminum oxide, also known as aluminum oxide, is a white powder. Primary aluminum is a liquid aluminum liquid that is extracted during electrolysis and has not been treated by precipitation or the like. The primary aluminum can be used as an aluminum ingot by in-body cooling of the aluminum ingot model. Therefore, alumina is a raw material for the extraction of aluminum liquid, electrolytic aluminum is a process, and primary aluminum is an aluminum liquid in an electrolytic process, and an aluminum ingot is an aluminum product, which is a saleable product that is finally sold in the market. Electrolytic aluminum is aluminum obtained by electrolysis. The modern electrolytic aluminum industry uses cryolite-alumina molten salt electrolysis. Molten cryolite is a solvent, alumina as a solute, carbon body as an anode, and aluminum as

GSK928TE lathe CNC system uses high-speed CPU and ultra-large-scale programmable gate array chip to form the control core. 320 × 240 dot matrix image LCD interface. Using international standard CNC language - ISO code to write part program, real μm level precision control, full screen editing, Chinese operation interface, real-time tracking display of processed parts graphics, simple and intuitive operation. It can be equipped with stepping motor or AC servo drive, which can complete the processing of outer circle, end face, slotting, taper, arc, thread, etc., with high performance and price ratio.

1. Division of processesCompared with the processing of CNC machine tools and ordinary machine tools, the machining process is more concentrated. According to the processing characteristics of CNC machine tools, the division of machining processes can be done in the following ways:1) According to the clamping positioning division processThis method is generally adapted to the processing of a small number of parts, mainly the processing site is divided into several parts, each process processing part of it. For example, when machining the shape, the inner cavity is used for clamping; when the inner cavity is machined, the outer shape is clamped.2) Divide the process by the tool usedIn order to reduce the number of tool changes and idle time, you can use the principle of tool concentration to divide the process, use a knife in a fixture to complete all processing parts that can be processed, and then change the second knife to process other parts. This method is mostly used on special CNC machine tools or machining centers.3) Dividing processes by rough and fine processingFor parts that are prone to machining deformation, taking into account the machining accuracy, deformation and other factors of the workpiece, the process can be divided according to the principle of rough and fine processing separation, that is, after the first rough finish.In the process division, it is necessary to be flexible in accordance with the structural requirements of the workpiece, the installation method of the workpiece, the processing technology of the workpiece, the performance of the CNC machine tool, and the factory production organization and management, and strive to be reasonable.2. Arrangement of processing sequenceThe arrangement of the processing sequence shall be based on the structure of the workpiece and th

First, the general rules of the knife: Open rough: Under the maximum load of the machine tool, in most cases, the largest possible knife should be used, and the maximum amount of feed should be fed as fast as possible. In the case of the same knife, the feed is inversely proportional to the amount of feed. Under normal circumstances, the load of the machine tool is not a problem. The principle of selecting the knife is mainly considered according to whether the two-dimensional angle of the product and the three-dimensional arc are too small. After selecting the knife, the length of the knife is determined. The principle is that the length of the knife is greater than the machining depth, and the large workpiece should consider whether the chuck has interference. Light knife: The purpose of the light knife is to meet the processing requirements of meeting the surface finish of the workpiece and preserving the appropriate margin. Similarly, the light knife uses the largest possible knife, as fast as possible, because the fine knife takes a long time to use the most suitable feed and feed. Under the same feed, the transverse feed is larger and faster, and the amount of curved feed is related to the finished finish. The size of the feed is related to the shape of the surface of the surface. Leave the smallest margin without hurting the surface. Use the largest knife, the fastest speed, and the appropriate feed. Second, the clamping method: 1. All the clips are horizontally long and short. 2. Vise clamping: The clamping height should not be lower than 10 mm. The height of the clamping and the processing height must be specified when machining the workpiece. The processing height should be about 5 mm above the plane of t

Due to the rapid development of the Chinese injection molding machine industry, in addition to the mainframe, the general specifications of injection molding machines have exceeded supply, and it is difficult to maintain the sales volume at 1/3 of the peak period. However, for some high-tech injection molding machines, their market demand has gradually increased. The demand for all-electric, full-hydraulic precision injection molding machines has increased. The main markets for such products are the sunrise industries such as electronic communications, audio and video, home appliances, and automobiles. These industries have high requirements for processing conditions and therefore have high requirements for the precision of injection molding machines. The development of hollow injection molding machines is also faster. Due to the stress damage problem of plastic parts under vibration, it has been a major problem in automotive full plasticization and other engineering applications. The combination of multiple rubber and plastic materials and the use of hollow injection molding technology can effectively improve this. Defects and problems have promoted the rapid development of hollow injection molding machines. New injection molding machines with air-assisted and water-assisted devices also have a large market in the near future, especially in home appliances, automobiles, and construction industries. Because these products have high requirements for appearance, and focus on the service life of the products.

SLA 3D printing technology usually includes three aspects. The first aspect is the VAT glass coating, which marks the exposure to ultraviolet light. The second aspect is the thermal printhead, which determines the resolution and print speed of the exposure layer. The third aspect is the cooling process of the glass surface. Before printing the next layer, make sure that the upper layer is kept under UV light for a sufficient amount of time to cure the SLA material.