belt grinder-belt sander 3D 模型

grinder (english belt grinder / belt sander) is the household name of a small desktop belt-grinding machine that works with a tape no more than 2000mm long. grinders have now gained the greatest popularity among knife makers, but this machine tool can be useful in the factory shop for the prompt performance of small locksmith or carpentry work, and in any home or garage workshop. grinder is essentially an advanced "younger brother" of a sharpener (a sharpener, or a sharpening machine, is also often called an emery, although this is incorrect). younger ones – because they are modern, and advanced ones - because, thanks to a huge selection of sanding belts, they can perform more types of work.

at the same time, some work is more convenient to perform on a sharpener – mainly sharpening tools for metalworking: cutters, cutters, drills. once again, we make a reservation that here we are not discussing serious machines with grinding wheels used for centerless or deep grinding. also, we are not talking about
many craftsmen do all the small grinding work on a grinding machine the old-fashioned way, but when a grinder appears in the workshop, 10-15 percent of the tasks remain for the sharpener, everything else is more convenient, faster and safer to do with a sanding belt.

the work on the grinder is carried out by endless sanding belts. this type of consumables is very convenient to use – the replacement of tapes is carried out almost instantly and without the use of additional tools. the range of sanding belts allows you to perform a huge range of work - contouring, stripping, stripping, grinding, polishing, sharpening, applying directional risks, cleaning from rust and old coatings.

on the sharpener, they mainly make "lenticular" concave descents on a knife, although if you put a cup or a disc, you can make straight ones.

the grinder allows you to make straight descents and is convenient in cutting the edge for welding. at the same time, if necessary, a large diameter contact wheel can be installed on the grinder,
when working on a sanding belt, the temperature is better removed from the workpiece than when working on a grinding wheel. for any work related to grinding, a lower temperature in the working area is very important – the life of the sanding belt is extended, there is less chance of overheating the workpiece.

an important point is the safety of work. of course, when working on any machine, it is necessary to use personal protective equipment - gl***** and a respirator, optionally also earplugs or headphones. but it is obvious that the damage caused by the rupture of the tape cannot be compared with the possible damage caused by a flying grinding wheel when working on a sharpener.