What are the common general machining methods? What are the characteristics of each

1 Drilling

Machine tools come in a wide variety of models and sizes. The variety of modern machine tools is almost limitless. Some machines are small enough to be mounted on a workbench, while others are so large that a special plant has to be built to accommodate them. Some machine tools are fairly simple, while others are very complex in their construction and operation.

Regardless of whether the machine is large or small, simple or complex, can be divided into five categories, which are the five basic ways to make metal molding.

Drilling is the process of drilling holes in solid metal. A rotary drill bit called a twist drill is used. The machine tool used for drilling is called a drill press. Drilling machines are also available in various models and sizes. In addition to drilling, drilling machines also perform other processes. When drilling, the workpiece is positioned and clamped, stationary; the drill rotates on one side and drills into the workpiece on the other (see Figure 1).

2 Turning and Boring

General machine tools are the most common machine tools used for turning workpieces. Turning is the process of removing metal from a workpiece. The tool cuts into or turns along the workpiece as it rotates (see Figure 2).

Boring is the process of enlarging or further machining holes that have been drilled or cast in a metal workpiece. Boring on a lathe is accomplished by rotating a single-edged tool on one side and feeding it into the workpiece on the other (see Figure 3).

3 Milling

Milling is the process of removing metal using a rotating tool with multiple cutting edges called a milling cutter (see Figure 4).

4 Grinding

Grinding is a machining method that uses a grinding wheel called an abrasive wheel to remove metal. Grinding finishes the workpiece and produces a workpiece with precise dimensions and a clean surface. When grinding a round workpiece, the workpiece rotates on one side and feeds into the rotating grinding wheel on the other. When grinding a flat workpiece, the workpiece moves back and forth under the rotating grinding wheel (see Figure 5). The grinding process is often used for final finishing of hard heat-treated workpieces to precise dimensions.

5 Bullhead planing, gantry planing and interpolator interpolation

These processes use single-edged tool machining to produce precision flat surfaces. We should know the difference between a bullhead planer, a gantry planer and an interpolator. With a bullhead planer, the workpiece is fed to the tool and the tool moves back and forth over the workpiece (see Figure 6).

When machining with a gantry planer, the tool cuts into or feeds into the workpiece, and the workpiece moves back and forth underneath the tool (see Figure 7).

Insertion machining is similar to bullhead planing.

Insertion machine is actually a vertical bullhead planer, only its tool is up and down movement. Insertion machining, the workpiece such as the direction of the tool for the overfeed movement, depending on the type of workpiece being machined, sometimes in a straight line, sometimes in an arc (see Figure 8). Inserting machine that is vertical bullhead planer, mainly used for cutting certain types of gears.

The broaching machine can be categorized under the category of gantry planer. Broaches have multiple teeth. Broaching machines can be used for internal machining, such as machining square holes, or for external machining, machining flat surfaces or a particular shape.

There are countless other machining methods that could fill a book.