Introduction of CNC HSK Tool Holder
- Categories:Company News
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- Time of issue:2012-01-17 08:37
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(Summary description)Everyone wants to know more about HSK CNC tool holders, so let's take a brief look at HSK CNC tool holders. High-speed cutting is a relative concept, and it is constantly changing with the progress of the times.
Introduction of CNC HSK Tool Holder
(Summary description)Everyone wants to know more about HSK CNC tool holders, so let's take a brief look at HSK CNC tool holders. High-speed cutting is a relative concept, and it is constantly changing with the progress of the times.
- Categories:Company News
- Author:
- Origin:
- Time of issue:2012-01-17 08:37
- Views:
Everyone wants to know more about HSK CNC tool holders, so let's take a brief look at HSK CNC tool holders. High-speed cutting is a relative concept, and it is constantly changing with the progress of the times. It is generally believed that the speed of high-speed cutting or ultra-high-speed cutting is 5-10 times that of ordinary cutting. The cutting speed can be divided from different angles. As the cutting speed increases, the cutting force will be reduced by more than 15-30%, and most of the cutting heat will be taken away by the chips. The quality of the machined surface can be improved by 1 to 2 levels, and the increase in production efficiency can reduce the manufacturing cost by 20% to 40%. Therefore, the significance of high-speed cutting is not only to obtain a higher surface cutting quality.
Figure 1 is a schematic diagram of the connection between the tool holder and the main shaft. The connection between the tool holder and the main shaft adopts an expansion clamping mechanism. The pull rod moves to the right under the action of the tension force to drive the clamping jaws to open, and the outer cone of the clamping jaws is on top 30 of the HSK tool holder hole. On the taper surface, the hollow short taper shank produces elastic deformation, so that the end face of the tool holder and the end face of the spindle are tightly attached, thereby realizing the double-sided positioning and clamping of the tool holder and the taper and end faces of the spindle.
Figure 1 HSK tool holder and spindle connection diagram After the HSK tool holder and the spindle are connected and clamped, contact stress occurs between the mating cones. The contact stress is determined by the actual interference between the tool holder and the spindle and the tool holder. The actual clamping force is determined by the actual clamping force, and the actual interference and the actual clamping force are closely related to the spindle speed. The following establishes a contact stress model for the connection between the tool holder and the spindle at any speed. The contact stress P is equal to the sum of the actual interference stress P1 on the connecting cone surface and the actual clamping force on the connecting cone p2, namely p=p1+p2
Foreign studies on high-speed cutting technology are relatively early, dating back to the 1960s. At present, it has been used in steel, cast iron and its alloys, aluminum, magnesium alloys, super alloys (nickel-based, chromium-based, iron-based and titanium-based alloys) and carbon fiber reinforcement in various industries such as aviation, aerospace, automobiles, and molds. The processing of composite materials such as plastics, among them, the processing of cast iron and aluminum alloy is the most common. Processing steel, cast iron and its alloys can reach 500-1500m/min, and processing aluminum and its alloys can reach 3000-4000m/min. The research in the field of high-speed cutting in our country started relatively late, and the study of high-speed hard cutting only began in the 1980s. The cutting tools are mainly high-speed steel and cemented carbide, and the cutting speed is mostly 100-200m/min, and the high-speed steel is within 40m/min.
The cutting level and processing efficiency are relatively low. In recent years, although there has been a relatively deep understanding of high-speed cutting technology, some imported CNC machine tools and machining centers can also meet the requirements of high-speed cutting, but due to cutting tools and other reasons, the application of high-speed cutting technology is also less. At present, high-speed cutting technology is mainly used in molds, automobiles, aerospace, and aerospace industries. Generally, imported tools are used to process cast iron and aluminum alloys. High-speed cutting technology is mainly divided into two aspects. On the one hand, high-speed cutting tool technology, including tool materials, tool holders and tool holder systems, tool dynamic balance technology, high-speed cutting database technology, detection and monitoring systems, etc.; on the other hand, high-speed CNC Machine tool technology, including the static, dynamic and thermal characteristics of the whole machine structure, electric spindle, linear motor feed system, high speed and high acceleration performance of CNC and servo system, bearing lubrication system, tool cooling system, etc.
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