What are the inspection standards of knife handle

The tool handle is the link between the machine tool and the tool. For the toolholder, there are many parameters to be tested, but the most important parameters are the taper angle of the toolholder and the circular runout of the toolholder. Shenganbei toolholder manufacturers offer a variety of toolholder types, each with excellent performance in specific machining applications. Therefore, it is suggested that the TOOL HOLDER should be selected according to the specific process and parts.

The tool handle is the link between the machine tool and the tool. For the toolholder, there are many parameters to be tested, but the most important parameters are the taper angle of the toolholder and the circular runout of the toolholder.

1. Taper tolerance of taper part of toolholder
In the standard of taper tolerance, strict tolerance grade is used to limit and guarantee the accuracy of the big and small end diameter, taper length and taper of the toolholder. The taper accuracy of the tool is a necessary condition to ensure the close combination of the taper surface of the tool handle and the spindle wall of the machine tool. It can effectively prevent and absorb the vibration and resistance generated in the cutting process, and make the cutting force of each part of the tool uniform, so as to greatly improve the service life of the main shaft and tool of the machine tool, and improve the surface roughness of the workpiece.

2. Circular runout of the Tool Holder part of the handle
Another important inspection parameter of the toolholder is the circular runout of the toolholder. It is usually measured at the end face of the tool holder.

Another way to express it is the circle beating at 3XD (5xd). The latter is closer to the real circular runout at the cutting edge of the tool.

As we all know, in the process of machining, especially in high-speed cutting, if the tool's circumferential runout is too large, it will cause a series of very bad consequences. For example, the tool wear is too fast, the workpiece surface is rough, and it may cause serious consequences such as vibration and spindle damage.

No toolholder system is omnipotent. Toolholders designed for high-speed finishing processes often lack the rigidity and strength required for efficient machining, such as rough casting. On the contrary, the toolholder used in rough machining usually lacks dynamic balance, which can make the toolholder run smoothly in the finishing process.

The use of improper toolholder will lead to dimensional error and parts scrapping, as well as excessive wear of machine tool spindle, shortened tool life and increased risk of tool fracture. In non critical operations, a good and inexpensive tool handle may produce satisfactory results. However, in the process that must obtain repeatable precision, especially when the scrap of expensive parts will reduce the profit margin of parts, investment in application centered high-quality toolholder can prevent such unexpected losses at a lower cost.