The characteristics of thermal expansion tool holders, explained by the tool holder and tool clamp manufacturer.

　　Tool Holder and Tool ClampThe manufacturer believes that compared to complete equipment, the value of the tool holder is very small, but it is an important bridge connecting the machine tool spindle and the tool. With the large-scale application of high-speed processing equipment and the gradual increase in spindle speed, choosing the right tool holder has become particularly important.

The tool holder manufacturer believes that the thermal expansion tool holder is also called: sintered tool holder. It can achieve high-precision processing. The 360-degree complete clamping precision and rigidity of the tool are greatly improved. The principle of the thermal expansion tool holder is based on the technology of thermal expansion and contraction, using induction heating technology to heat the thermal expansion tool holder, and utilizing the difference in thermal expansion coefficients between the tool holder and the tool to clamp the tool in a thermal mounting system. This system uses a tool holder shrink machine for heating and clamping, making tool loading and unloading simple and convenient. The tool installation part does not require the nuts and components needed for spring collets. The simple, efficient, and slender shape of the tool holder head can more practically set the tool's protrusion length, better reflecting the advantages of the thermal expansion tool holder in deep cavity processing. During high-speed processing, clamping stability and high concentricity maintain high processing accuracy.

The tool holder manufacturer believes that compared to other tool holders, the thermal expansion tool holder has a higher thermal expansion coefficient, allowing for low-temperature thermal clamping and thermal disassembly. Regardless of how many times it is thermally clamped or removed, the material will not change, and the precision of the tool holder will not deteriorate. High-rigidity tools have a short protrusion, and the thermally loaded tool holder does not require a collet-type tool holder to maintain the tool's nut and collet.

The tool holder manufacturer believes it is an integral body composed only of the main body, with a half angle of 3 and a wall thickness of 1.5mm, making it a very light and slender shape, minimizing interference with the workpiece. It can perform high-rigidity, strong, stable, vibration-free cutting, achieving high-quality processing surfaces, with high precision during runout, effectively extending tool life. There are no fasteners (nuts, collets, etc.), and it is independent of skill level, so installation is accurate and precise: since there is no need to adjust the clamping degree, tools can be installed with high precision, and high-precision clamping can extend tool life, ensuring high durability in processing. After multiple processing validations, even the same tool holder can be used 2000 times.

The tool holder manufacturer believes that the heat of the thermal expansion tool holder comes from induction heating technology. The heating device used to expand the tool holder has an induction coil, which can precisely heat the area of the tool inserted into the tool holder. After the tool is inserted, the tool holder needs to cool for a period of time, and the cooling sleeve can accelerate its cooling speed. After the tool holder cools, it clamps with its contraction force. The tool clamped using the principle of thermal expansion and contraction almost becomes a uniformly stressed integrated tool, with many advantages: radial runout error precision is very high, reaching below 3m; it transmits a large torque, while the design of the tool holder is relatively small.