High-speed milling (HSM or HSC) typically uses very high milling speeds, fast feed rates, and very small radial and axial milling depths to mill the mold. During milling, a large amount of milling heat is carried away by the chips, so the surface temperature of the workpiece is low, the workpiece deformation is small, and the hard surface can be cut, which brings new processing technology to modern mold processing. (1) The machining accuracy and surface quality of the workpiece are improved. High-speed milling machines must have high rigidity and high precision. At the same time, due to low milling force, the workpiece has less thermal deformation and high-speed milling has high machining accuracy. The milling depth is small, and the feed is faster, the surface roughness of the machined surface is very small, it can reach Ra0.4~0.6 when milling aluminum alloy, and Ra0.2~0.4 when milling steel. (2) Conducive to the processing of thin-walled molds and integral structural parts. High-speed milling has low milling force and high stability, and can process thin-walled molds and integral structural parts with high quality. For example, high-speed cutting can make the aircraft use a large number of integral structural parts, significantly reducing component weight, improving part reliability and reducing assembly man-hours. In digital products or relay products, thin-walled molds are difficult to machine, but high-speed milling techniques can be greatly improved. It can process thin-walled parts with a wall thickness of 0.2mm and a wall height of 20mm. (3) It can process brittle materials with high hardness and high strength instead of partial EDM. At present, high-speed milling has been able to machine parts with hardness up to HRC60 for hard cutting. High-speed milling allows cutting operations after heat treatment, changing the manufacturing process of the mold, no longer a single mode of hard material non-electrical machining. (4) Increasing the productivity of the mold The milling speed and the feed rate are improved, the material removal rate is improved, and the processing speed is improved. At the same time, the hardened material can be processed, the surface quality meets the processing requirements, no polishing or electric processing is required, the process route is shortened, and the productivity is greatly improved. This micropipette enables true one-handed operation without changing the holding position: adjust volume, Pipette, remove tip. single channel adjustable pipettes,variable volume single channel pipettes,single channel pipette set Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuebio.com
Electric discharge machining (EDM), also known as electrical machining, belongs to the technical field of special processing. It is an important supplement and development of widely used high-speed milling, mainly including EDM and EDM. Modern EDM is a method of directly processing electric energy by using digital electric system. Because it has its own independent characteristics compared with other processing methods: (1) directly use forming electrode or wire electrode as cutting tool. There is no need to purchase expensive tools, which saves manufacturing costs. (2) It is possible to machine a workpiece having a complicated shape that is difficult to machine or cannot be processed by a conventional cutting method. It is easy to realize automatic processing for different workpieces by programming different control programs or machining electrodes. It is suitable for processing small-sized complex parts, single parts and prototypes, and the processing cycle is short. (3) Using the principle of electro-erosion processing, the electrode wire or the formed electrode is not in direct contact with the workpiece, and the effect between the two is small, so the electrode wire or the tool electrode does not need too high strength. (4) In high-speed milling, the hardness of the tool must be larger than that of the workpiece, and the electrode material of the CNC EDM must not be harder than the workpiece material, which can save auxiliary time and tool cost. (5) Directly using electric and thermal energy for processing, it is convenient to adjust the processing parameters (pulse width, interval, servo speed, etc.) that affect the machining accuracy, which is beneficial to the improvement of machining precision and facilitates the automatic control of the machining process. (6) The working fluid generally adopts water-based emulsion or special spark oil, which can realize immersion liquid processing and has good cooling state. (7) Four-axis or five-axis linkage can be used to machine various parts such as taper, upper and lower profile or rotary body, thread. (8) EDM wire cutting processing Because the electrode wire is relatively thin, it is convenient to process micro-shaped holes, narrow slits and shaped columns and holes with complicated cross-section. Due to the narrow slit, the actual metal removal is small and the material utilization is high. It is of great significance for processing and saving precious metals. In recent years, as EDM has solved the problem of surface quality, coupled with a series of technological advances in automation and intelligentization, EDM technology has made a qualitative leap. With its unique processing performance, it has not been found yet. A processing technology can compete with it.
The development direction of modern mold manufacturing is the combination of the two, complement each other. High-speed milling is a system technology. Companies must purchase suitable high-speed cutting machines according to the material and structural characteristics of the products, select the right cutting tools, and use the best cutting technology to achieve the ideal high-speed mold processing effect. EDM is a powerful complement and strong backing for high-speed milling. It plays an extremely important role in electromachining machines in small areas or complex areas that cannot be machined by high-speed milling. For example, the high-speed milling center and the EDM machine are jointly manufactured by foreign countries and controlled by the same system, which is called the mold manufacturing center. The mold manufacturing center can realize unmanned intelligent processing of mold manufacturing. In short, mold companies must give full play to the respective advantages of the two CNC technology, and optimize the combination, in order to play the highest efficiency of the mold CNC machine.
Regardless of the volume, you can use your pipettes for ergonomic and efficient operation. The operation force is small and the stroke is short, which can easily handle long-term continuous pipetting operations. It is designed with perfect ergonomics for a comfortable grip in any hand position, right or left, large or small.
Even when wearing gloves, the range lock can be easily operated to lock the set range and prevent accidental adjustment errors. For a quick calibration experience, easy-to-calibrate technology makes calibration a snap. Calibration can be done without auxiliary tools. Compatibility tables describe how tips fit into pipettes, making it easy to find the right tip.