What are the types of knives

Tools can be divided into five categories according to the form of the surface of the workpiece:

Tools for processing various external surfaces, including turning tools, planer cutters, milling cutters, external surface broaches and files, etc.: hole processing tools, including drills, reamer drills, brace cutters, comparison knives and internal surface broaches, etc.;

Threading tools, including thread pushing, plate teeth, automatic opening and closing thread cutting heads, thread turning tools and thread milling cutters, etc.;

Gear processing tools, including hob cutters, shaper cutters, shaving cutters, push gear processing tools, etc.;

Parting tools, including toothed circular saw blades, band saws, bow saws, parting turning tools and saw blade milling cutters, etc. In addition, there are combination knives.

According to the cutting movement mode and the corresponding cutting edge shape, the tools can be divided into three categories:

General tools, such as turning tools, planing cutters, milling cutters do not include forming turning tools, forming roe deer planer cutters and forming milling cutters), boring cutters, drills, reaming drills, comparing knives and saws, etc.;

Forming tools, the cutting edge of this kind of cutter has the same or close to the same shape as the cross-section of the workpiece to be processed, such as forming turning tools, forming spore planer cutters, forming milling cutters, broaches, conical reamers and various threading tools, etc.;

Expansion cutter is to use the development method to process the tooth surface of the gear or similar workpiece, such as hob, shaper cutter, shaving cutter, push gear foam planer cutter and bevel gear milling cutter, etc.