Hole cutting tools can be divided into drilling tools, boring tools, reaming tools and reaming tools.
Published:
2021-11-12
(1) there are many drilling tools, including ordinary twist drill, indexable shallow hole drill and flat drill. Ordinary twist drills are usually used to drill holes in machining centers, and ordinary twist drills are mainly composed of working parts and handles.
(1) there are many drilling tools, including ordinary twist drill, indexable shallow hole drill and flat drill.
Ordinary twist drills are usually used to drill holes in machining centers, and ordinary twist drills are mainly composed of working parts and handles.
The tool shank is divided into two types: straight shank and taper shank.
The tool handle of straight shank tool is mainly spring chuck handle, which has the advantages of automatic centering and automatic elimination of deflection, so it is best to choose this type of cutter with small size.
The working part includes a cutting part and a guide part, which shows that the cutting part of the twist drill has two main cutting edges, two secondary cutting edges and one horizontal edge.
The guiding part of the twist drill plays the role of guiding, trimming and removing chips and conveying cutting fluid.
Twist drills are generally used for rough machining of low precision holes, because the fixture used in the machining center does not have a drill sleeve centering guide, the bit is prone to yaw movement when cutting at high speed, and the horizontal edge of the bit is long, so when drilling, the center hole should be drilled to correct the bit.
(2) the main feature of boring is to obtain accurate position and size of holes and high precision roundness, cylindricity and surface roughness. therefore, boring cutters can be used to guarantee holes with high precision.
Boring cutters can be divided into single-edge boring tools and double-edge boring tools according to the number of cutting edges. Single-edge boring tools can be used for boring through holes, blind holes and ladder holes, and double-edge boring tools can be used for machining large diameter holes.
In addition, there is also a kind of fine-tuning boring cutter, which is widely used in the machining center for fine boring, which is convenient to adjust and has high precision.
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