SUMMARY CNC machining generally rectilinear profile parts, arcs, there are some non-circular curved profile, such as high-order curve, curve list, a list of other surfaces, but can be used to approximate a straight line or arc, when the press slide way When the data of each straight line and circular arc segment is programmed into the NC machining program, and the CNC system is input and started, the CNC system performs input processing, interpolation calculation and output processing, and controls the servo mechanism according to the calculation result. The contours of the machined parts are generally composed of straight lines and arcs. There are also some non-circular curve contours such as high-order curves, list curves, list surfaces, etc., but they can all be approximated by straight lines or arcs. When the data is programmed into the NC machining program and the CNC system is input and started, the CNC system performs input processing, interpolation calculation, and output processing on the block, and controls the servo mechanism according to the calculation result, thereby driving the servo mechanism of the CNC machine tool to make the tool. And the parts are precisely matched to the relative motion of each block, and finally processed to meet the requirements Components. The interpolation calculation is based on the input basic data, such as the linear end point coordinate value, the arc starting point, the center of the circle, the end point coordinate value, the feed speed, etc., through calculation, the shape of the workpiece contour is described, and the calculation result is calculated according to the calculation result. A feed command is issued to each coordinate. Interpolation is actually the work of data densification based on limited information. Whether it is hardware numerical control or CNC numerical control, the interpolation module is indispensable. The module or device that can complete the

As a representative of the advanced productive forces of modern manufacturing, CNC machining plays an extremely important role in the industries of machinery, aerospace, and moulds. Since the 1990s, countries in Europe, the United States, and Japan have been competing to develop and apply a new generation of high-speed CNC machine tools, accelerating the pace of development of high-speed machine tools. High-speed spindle unit motor spindle speed 15000 ~ 100000r/min, high-speed and high acceleration / deceleration of the moving parts of the rapid transfer speed 60 ~ 120m/min, cutting feed speed up to 60m/min, high-speed machining center feed rate Up to 80m/min, air speed up to 100m/min. The HyperMach machine tool feed rate of CINCINNATI, USA is up to 60m/min, the speed is 100m/min, and the spindle speed has reached 60,000r/min. In terms of machining accuracy, in the past 10 years, the machining accuracy of ordinary CNC machine tools has increased from 10μm to 5μm, precision machining centers have increased from 3 to 5μm to 1 to 1.5μm, and ultra-precision machining precision has begun to enter the nanometer level ( 0.01 μm). The development and application of a new generation of high-speed CNC machine tools, especially high-speed machining centers, are closely related to ultra-high-speed cutting. 1. Differences in cutting level between machining centers at home and abroad At present, the cutting speeds of cutting and milling in advanced countries have reached 5000-8000m/min or more; the number of spindle rotations of machine tools is more than 30,000r/min (some as high as 100,000r/min). For example, in the milling plane, the cutting speed in foreign countries is generally greater than 1000 to 2000 m/min, while the domestic equivalent is only 1/12 to 1/15 of the foreign country, that is, domestic dry 12 to 15 hours of activity is equivalent to 1 foreign dry. hour. According to the survey, the actual cut

(1) The mixing of new materials and recycled materials should be consistent. (2) The drying conditions should be consistent and the particles should be uniform. (3) The influence of shrinkage rate on dimensional accuracy is fully considered when selecting materials. 4. Processing: (1) If the plastic processing temperature is too low, the temperature should be increased because the higher the temperature, the smaller the dimensional shrinkage. (2) For crystalline plastics, the mold temperature is lower. (3) The molding cycle should be stable and should not be excessively fluctuating. (4) The amount of feed, that is, the amount of shot glue should be stable.

Wear protective equipment before operation. The machine tool operator must grasp the function of each button and the precautions for operation. The protective door of the machine tool must be closed before machining. The tools around the machine must be neatly arranged. When operating the machine, pay attention to the contents of the warning signs on various parts of the machine. When the machine tool is powered on, the operator must never open and touch the machine with the lightning symbol on it and place it with a strong electrical device to prevent it from being damaged by electric shock. Turn off the machine when thundering. Otherwise, it will easily cause burnout of the module or loss of data changes, resulting in unnecessary losses. After the tool is clamped, it should be manually cut. During the operation of the machine tool, do not remove chips. Do not touch the moving parts of the machine by hand. When removing chips, professional tools should be used to avoid cutting the hands and feet by chips. When measuring the workpiece, it must be done before the machine stops. After the work is completed, the machine tool and control equipment must be cleaned, and the machine tool must be maintained in time. When servicing electrical devices, the power must first be switched off. After all work is completed, make sure to cut off the system power before leaving.

Next Line 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 Next Line 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

Next Line 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 Next Line 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

Custom CNC Machining service.According to the processing type of the CNC punching machine, the corresponding algorithm is selected and converted into NC machining code. The graphics and processing data corresponding to each different processing mode are different, and the converted NC code is also different. For the different processing modes of human-computer interaction input, the corresponding NC code conversion comparison table is established, and according to this table, respectively. The NC code conversion processing function has been compiled. When performing NC code conversion, first determine whether the NC program uses absolute programming or relative programming, then sequentially retrieve the stored pointers in mGraphArray, process the CGraph object, determine the processing type, call the corresponding processing function, and convert the graphics and processing information into NC code. In this process, the tool number parameter in the CGraph object is checked. If the tool has a change, the tool change command is programmed. In the development process, a class CNcTool for storing tool numbers is designed, and an instance of CTypedPtrArray mNctoolArray is created. The pointer to the CNcTool object is stored. After the NC code is generated, the interaction between CNcTool and the turret tool file is processed. Attach the tool table generated by the tool information required by the program to the NC file. In the process of machining, in order to improve efficiency, the number of tool changes is minimized, and the tool travel path is the shortest. When the system generates the NC code, the optimization of the number of tool changes is minimized.

SLA 3D printing Which material is most commonly used for 3D printing? It is estimated that the first material that pops up in the minds of people familiar with the 3D printing industry is photosensitive resin. Photosensitive resin is a kind of 3D printing material, which is similar to ABS material, with smooth surface, high precision, paintable surface and acceptable hardness. Photosensitive resin is very suitable for printing prototype models, such as design models, and there are also special requirements for functions in addition to appearance. Such as high temperature resistance or higher toughness. Photosensitive resin is formed by SLA/DLP technology, SLA is also called photocuring molding, which uses ultraviolet light or other beams to cure Liquid photosensitive resin. Photosensitive resin, literally speaking, is a resin material that is sensitive to light, which will quickly cure and form after light irradiation. Compared with SLA, DLP-printed items have a smoother surface and higher molding quality, so many DLP models are positioned. Jewelry grade. The characteristics and applications of photosensitive resins are introduced in detail below. Characteristics of photosensitive resin Photosensitive resin is generally in a liquefied state, and objects printed with this material generally have the characteristics of high strength, high temperature resistance, and waterproofing. However, If the photosensitive resin material is not used for a long time, it is easy to cause hardening. The specific characteristics of photosensitive resin are as follows: 1. Low viscosity; 2. Small curing shrinkage; 3. Fast curing rate; 4. Small swelling; 5. High light sensitivity; 6. High degree of curing; 7. High we