In order for the processing of various materials to be carried out correctly, it is necessary to care for and monitor the condition of band saws. For this purpose, machines for sharpening and wiring band saws are used. Timely care will ensure long-term use of tools.
Band Saw Design
Band saws are a special continuous construction characterized by the presence of cutting elements on one side. This is a cutting element with which woodwork is performed. Most often, band saws are used in a variety of band saw blades. With their help, various parts are cut. With the help of these paintings, a sufficiently high quality of the cut is ensured. All this is provided only if the saw has a good divorce. Also, the tool must be serviced in a timely manner.
Band saws are made of heavy-duty metal, which ensures not only high quality of the cut, but also the duration of operation of the saw. The teeth have a universal angle, which allows maximum quality cutting of the material.
Shapes and blade sharpening angle
The geometry of the cutting elements of band saws can be varied, which directly depends on the material intended for sawing. Woodworking machines are most often equipped with special saws, with which you can carry out:
- carpentry work;
- saw logs and beams;
- use on dividing saws.
The grinding angle is determined strictly by the tool manufacturer. The rake angle will be as small as possible when using solid wood. Band saws for metal are equipped with saws with various shapes of blades, which directly depends on the metal used for sawing. If it is necessary to carry out cutting of thin-walled metals and at the same time have thin chips, the rake angle of the cut during which will be equal to zero, then standard cutting is used. The angle of sharpening can be varied. It directly depends on the structure of the device.
Tooth, which has a positive rake angle, have those saws that are widely used for sawing metal with thick walls. The step of the blade with which thin metal is sawn is quite small. In order to cut thick-walled metal, it is necessary to use devices that have a large number of paintings. In some cases, the equipment has a variable pitch, which eliminates the resonance effect. Changing the distance between the teeth directly depends on a particular group.
Divorce cutting elements of a band saw
Divorce is the bending of the band saw blades in different directions. This can significantly reduce the friction of the web and prevent it from being clamped. To ensure free movement of the blade on the wall of the material being sawed, its width should be greater than the thickness of this material.
Video: Sharpening And Wire Sawing Wood
Types of wiring band saws
Divorce can have several varieties. Different manufacturers may have different names. Most often may be:
- Standard, which is characterized by the opposite bending of the cutting elements in various directions. Most often it is used for band saws, which are used to saw hard material.
- Wavy, which belongs to the category of complex structures. Divorce in this case has a variable meaning. In this case, a peculiar wave forms.
A divorce does not consist in bending the entire canvas, but only a certain part of its top. Parameters are determined strictly by the manufacturers of the tool. Their range is from 0.3 to 0.7 millimeters.
Protecting A divorce consists in bending two teeth. In this case, the third remains in place. Designed for band saws for processing particularly hard material. In shape, every third tooth resembles a trapezoid. The location is the center of the canvas. With its help the most correct direction of a saw tape is carried out.
Woodworking machines are characterized by the universal design of the saw tool. A divorce for processing soft rocks should be characterized by larger dimensions than in equipment for processing hard rocks. But the divorce should not be such that a wedge is located in the center without a cutout. The divorce should be characterized by the same arrangement of all cutting elements. To raise teeth, it is necessary so that the deviation is not more than 0.1 mm. If the saws are not evenly distributed, this will lead to the fact that the band saw equipment in the process will move to the side.
During the operation of the canvas very often there is a gap. This is because its sharpening is poorly carried out. This is explained by the concentration of stress in the profile of the blade, if the sharpening is carried out at a low-quality level. The need for the procedure is determined by the condition of the band saws. If the roughness of the cut surface increases, this leads to a blunting of the tool.
Tool sharpening is carried out using diamond, electrocorundum, elbor disks. Their choice directly depends on the characteristics of the processed material. Sharpening of the blade, the material of production of which is tool steel, is carried out by corundum circles. The procedure for bimetallic tools is carried out correctly if a diamond or elbor wheel is used. How to carry out this procedure will tell the instructions. The most important thing is that the angle does not change in the process.
For sharpening can be used circles of various diameters. The choice of one of them is determined by the parameters of the device. For this purpose, profile, flat, plate, cup circles are most often used. Sharpening is performed correctly if the peripheral speed is 20 to 25 meters per second.
The principle of sharpening tape
If there are notches on the fixture, chipping will be observed at the edge of the workpiece. That is why it is necessary that sharpening is carried out correctly. During this process, it is necessary to work not only with the front, but also with the back of the canvas. Sharpening devices can be carried out in different circles. In this case, the angle of the canvas should be taken into account. If you want to carry out the procedure correctly, then you need to learn it from a specialist.
In order for the band saw equipment to work efficiently, it is necessary not only to select it correctly, but also to sharpen it in a timely manner. To this end, special circles are most often used. This procedure is as simple as possible, which allows it to be easily carried out by a master without relevant experience.