Views:108 Author:Site Editor Publish Time: 2021-07-29 Origin:Site
There are two methods to treat wood, cutting or grinding. The working methods of sanders include: driving a belt to work continuously, driving a disc with a rotating shaft, rotating a cylindrical sanding surface of the air sander, and driving the sandpaper on a track, etc. Wood saning machines can be divided into the following categories.
1. Belt machine
2. Disc sander
3. Air sand drum machine
4. Orbital sanding machine
5. Irregular orbital sanding machine
The hand-held sander uses a replaceable continuous sanding belt. Generally, the sanding width is 3 inches (7.62 cm) or 4 inches (10.16 cm), and the circumference is 20 inches (50.8 cm) or 24 inches (60.96 cm). The belt machine is mainly used for large-area grinding (such as desktop grinding). They can quickly grind the wood off the surface, so it is difficult to control, and it is prone to pit or bump.
The hand-held disc sander is also called the sander. The diameter of the sand disc is usually 4 inches (10.16 cm) to 9 inches (22.86 cm). Disc sander is mainly a metal processing tool, but it is also very suitable for shaping wood, because it can quickly grind away a large amount of wood. The rotating movement of the sander makes it impossible to sand along the texture-it always leaves scratches transverse to the texture.
Tabletop drum sanding machines grind by rotating vertical or horizontal cylindrical "drums" (equipped with cylindrical sanding sleeves).The drums come in a variety of diameters and lengths. Some are solid rubber drums, while others are air sanders with air in the middle. Sandblasters can be used to shape and polish concave and convex surfaces, as well as to process rounded corners and edges.
Orbital sanding machine are also known as palm sand. Palm sanding is the gentlest type of sander and is mainly used for smoothing out flat and curved surfaces. It is a great helper for woodworkers to work on furniture details.This small sander requires only 1/4 sheet of sandpaper. To use it, press it against the surface of the wood and rub the wood in the direction of the grain. It will shake and form small spiral abrasion marks, thus grinding off excess wood very finely. With a high sandpaper mesh, the spiral abrasion marks caused by the palm grit are barely visible on the wood. The semi-orbital sander is a larger palm sander. It is more useful for surface polishing, but less useful in surface finishing.
In the woodworking room, for most surface preparation work, the irregular orbital sander (round sanding) is the best choice. It combines the rotary grinding method of a disc sander with the rotary flow grinding method of an orbital sander. This makes it very powerful and it only leaves a few horizontal textured scratches where it passes.
Dongguan Kaibao Precision Machinery Co., Ltd. is a professional company that produces pneumatic grinders, polishers and their grinding discs, offering a wide range of options for customers to choose from.