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.

Milling basics

14 5月 2018 | 没有评论 | posted by admin | in Article

finishing
The main consideration in finish machining is the surface quality of the workpiece rather than the amount of chips. A small depth of cut is usually used for finishing. The secondary cutting edge of the tool often has a special shape, such as a wiper. According to the machine tool, cutting method, workpiece material and the tool used, the surface roughness can reach the level of Ra1.6μm, even under excellent conditions, it can reach Ra0.4μm.
The amount of wear on the tool flank during finishing is no longer the main criterion, it will give the surface quality of the workpiece