In the tool stage, the tool holder is the main aspect used to connect the machine to the tool. According to the different mechanical interfaces, their installation styles are also different based on the product types. Holders of tools are always the critical connection. Their mounts range from HSK tool holders, VDI mounts, or outdated R8 styles. These are all different holders and products. The BMT tool holder is very famous products and practical because of its advantages. In contrast, when people use CNC milling lathes, the movable tool holder has two installation options: VDI or BMT (Base Mount Tool) products. Since the former product has been released for more than a few decades, the tool is held in place by a toothed mating part mounted inside the turret unit. The VDI tool holder product needs to be tightened to verify the accuracy value to indicate the straightness during installation, and the straightness can be adjusted.
On the other hand, BMT product is the latest technology of milling lathes. It is a better solution with rigidity. During the installation of the tool holder on the turret, the operator can use 4 screws to tighten the tool holder. The tool holder has been positioned and fixed by positioning keys on the turret surface. These keys eliminate the indication that the tool holder is straightened product.
In the tool family, at least one or more tool holders will be used to construct and install all types of machine tools. Lathes, milling machines, machine centers, drilling machines, boring machines, and even tapping machines are all designed with tool holders. Tools can be clamped and loosened so that worn tools can be replaced with new tools or reused for future machining tasks. In the field of machines, machine taper is used to fix cutting tools or tool holders on the spindle.
In principle, a conical convex member is fitted into a concave receptacle, with matching tapers of equal angles. Almost all machine spindles and many power tool spindles are designed with tapers, which is the main method for connecting tools. Even on many traditional and advanced drilling machines, handheld drilling machines and lathes, they have chucks and collets that are still fixed by taper. On the other hand, for drills, drilling machines, and milling machines, the convex member is a tool holder or tool shank, and the concave socket is integral with the spindle unit.
Speaking of grinders and drilling machines, let's take a look at the situation of drilling machines. During drilling machine operation, operators may wish to install the drill bit directly, or they may simply use a drill chuck instead.
Today, almost all types of milling-based machine tools use tools guided on tapered surfaces. These designs are convenient during processing, which shortens the production cycle and greatly improves productivity. In the case of a lathe, the male part may belong to the end of the cutter or the spindle, and the spindle nose may have a male taper, a female taper, or even two parts. The operator must have the ability to quickly install or remove the cutter head, because the work cycle must be shortened as soon as possible to shorten the idle time.
For example, a lathe has a rotating spindle in its headstock, and the operator may want to install a spur gear drive or work in a collet device. In addition, the machine taper must be able to allow high power transmission rates across interface devices. If the milling machine is combined, this function is needed. Moreover, machine taper can be further divided into self-holding type and self-releasing type. Regarding the self-holding taper, the convex and concave wedges are combined together and the degree to which a given drilling force can be effectively resisted is combined with each other without using the tie rod unit.
In short, in the machine tool industry, all types of machine tools will be designed and installed with at least one or more tool holders. Lathes, milling machines, machine centers, drilling machines, boring machines, and even tapping machines are designed with tool holders that can clamp and loosen tools so that worn tools can be replaced with new tools or reshaped for future machining tasks.
In the field of machine tools, taper is a system for fixing cutting tools or tool holders on the spindle of machine tools or power tools. In principle, a conical convex member is fitted into a concave receptacle, with a matching taper of appropriate angle for proper use. In addition, almost all machine tool spindles and many power tool spindles are designed with tapers as their main method of installing tools. Many traditional and advanced drilling machines, hand-held drills, and turning machines, even if they have chucks, the chucks are still connected by taper. At the same time, in drilling machines and milling machines, the convex member is the shank, while the concave socket is integral with the spindle. This integrated design has long been adopted in the industry, and operators will inherit this habit to operate during their machining operations.
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