The basic type of tooth cutter
17 5月 2018 | 没有评论 | posted by admin | in Article
The tooth profile cutter is a special tool for milling the forming surface of the workpiece. Its blade shape is calculated based on the profile of the workpiece. It has a high productivity, and can ensure the interchangeability of the shape and size of the workpiece. Therefore, it is widely used. Forming cutter can be divided into two kinds of teeth and sharp teeth according to the back shape.
1. Tip-Shaped Milling Cutter: The tine-forming cutter has a large number of teeth and a reasonable relief angle, which makes the cutting light and smooth, the machining surface quality is good, and the milling cutter life is high. However, sharp teeth forming cutters require special dies or grinding on the back of a CNC tool grinder. The sharpening process is complicated. Therefore, a simple blade-shaped forming cutter is generally made into a sharp tooth shape.
2. Tooth profile cutter: The back of the teeth is formed by a radial cut so that it has a profiled blade relief angle. After the tool is reground along the rake face, the shape of the cutting edge can be ensured. Therefore, the tooth structure is generally used in production, and only the sharp tooth structure is used in mass production.
Triangular Carbide Car Blade Refitted as a Milling Cutter
16 5月 2018 | 没有评论 | posted by admin | in Article
When milling narrow and shallow grooves, if you do not have a suitable cutter, you can find a triangular carbide car blade into a small milling cutter.
Find the thickness of the triangle carbide car blade and measure its thickness. When it is too thick, grind it to the size with a grinder. According to the size of the center hole of the blade, a milling cutter rod is manufactured, and after the cutter blade is mounted on the milling cutter rod, the nut is fastened with a small nut. Since the center hole of the triangular hard alloy car blade has no keyway, the key can not be used to transfer the force, and the fastening force of the small nut is too small, so the car blade should be welded to the milling cutter bar by the brazing method again. After the workpiece is clamped on the fixture and milled, it can be milled. Because of this cutter is a negative rake angle. Milling depth, feedrate, and milling speed cannot be large, and the coolant is added to cool.
Basic knowledge of carbide tool processing
15 5月 2018 | 没有评论 | posted by admin | in Article
When selecting the angle of the tool, it is necessary to consider the influence of various factors, such as workpiece material, tool material, and processing properties (roughness, fine processing), etc., and must be reasonably selected according to specific conditions. Generally speaking, the tool angle refers to the manufacturing and measurement of the labeling angle. In the actual work, due to the different installation positions of the tool and the direction of the cutting movement, the actual working angle and the marked angle are different, but the difference is usually very small. .
The materials used to make the tool must have high hardness and wear resistance at high temperatures, necessary bending strength, impact toughness and chemical inertness, good processability (cutting, forging, heat treatment, etc.), and are not easily deformed.
