The composition and application of the finger joint cutter
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The composition and application of the finger joint cutter
The Finger knife is to process the end of wood into fingertip shape, and then splice. There are two kinds of finger cutters in the form: whole finger cutter and single finger cutter. Single finger joint cutter includes single tenon cutter and edge cutter. A single finger cutter is usually used as a group.
The finger joint cutter is divided into integral material and separate material from the material. The whole material finger joint cutter has high-speed steel or T8 steel. The split material finger joint cutter is made of two kinds of materials: cutter body and cutter head. There are two kinds of materials: inlaid type and welding type. The cutter head material has high-speed steel and cemented carbide.
2. Selection of various parameters of finger joint cutter
Material selection of finger cutter. The manganese material is not easy to deform and has good strength after heat treatment. Cemented carbide has high hardness and good wear resistance, but it is not easy to process.
Selection of inner hole and outer diameter of finger cutter. The inner hole and outer diameter of the finger cutter are determined according to the equipment used by the manufacturer. The position and space of the shaft and the cutter are different for different equipment.
Selection of teeth number of finger joint cutter. The number of teeth of finger cutter is generally two teeth and four teeth, which is determined according to the rotating speed of the equipment. The rotation speed of the equipment is fast and slow. For the faster equipment, select the tool with less teeth, and for the slower equipment, select the tool with more teeth. However, multi teeth can improve the finish of the cutting surface. Generally, multi tooth finger joint tool is selected.
The selection of each angle of finger cutter. The angle of finger joint knife mainly includes front angle, back angle and oblique angle. The angle of the finger cutter is determined by the material of the processed wood, the depth of finger joint and the rotating speed of the equipment.
There are many kinds of wood materials, such as Tung wood, pine, birch, oak and so on. Their hardness and softness vary greatly, so it affects the angle of finger knife. The depth of finger joint is required to be deeper and shallower. The bevel angle is different when other conditions are the same. The front angle and back angle of the equipment are different with different rotating speed. The tool angle is larger for slow rotating speed and smaller for fast rotating speed.
The precision of finger joint. The precision of finger joint cutter includes flatness, parallelism, perpendicularity, end jump and so on. The precision of finger joint cutter is the inherent quality requirement of finger joint cutter. The precision of finger joint cutter is determined according to the production capacity and production conditions of the manufacturer.
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