2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16
Such a tool appeared on the market relatively recently. Metal cutting blade for a miter saw? For many, even experienced craftsmen, this causes a smile and distrust. Not so long ago, steel succumbed only to flame cutting, a circle grinder and a hacksaw. On cross-cutting machines, only wood and plastic materials could be processed. However, time does not stand still. Materials engineers, in tandem with toolmakers, are constantly working on the synthesis of new alloys. Today, a cutting disc for metal on a miter saw can be purchased at any hardware store. However, this tool operates under severe conditions and is subject to wear. How to make the right choice and not miscalculate? Recommendations are contained in the article.
Miter saw design
The basis of the machine, of course,are the electric drive (motor), the disk itself for the miter saw (for metal or wood), the table (footboard) and the handle.
The engine start button is located, as a rule (on most models), on the footboard. The handle is necessary to act on the disk and provides the necessary tool feed force.
Different tool steels and alloys can be used to make a metal blade for a miter saw. However, all of them should have increased wear resistance and resistance to fatigue failure. In addition, a significant amount of thermal energy is released during operation, which leads to significant heating of the tool. Therefore, these materials must also be heat-resistant and retain high properties even at elevated temperatures. Where there is a lot of heat, there is a lot of linear expansion. This feature should also be taken into account when choosing the design and material of a metal cutting blade for a miter saw.
Drive types
The electric drive can be either collector type or asynchronous. Ceteris paribus, preference should be given to asynchronous. According to experts in the field of electrical engineering, such devices are unpretentious to operating conditions and more reliable, which means they will not require expensive repairs. The disadvantage is their higher cost. Although relatively inexpensive machines equipped with this type of drive have recently appeared on the market.
On most models, the drive is structurallylocated behind the disk. Although there are also models in which the engine is located on the right or left. Doing so will obscure the view of the engine box and may result in serious injury. Therefore, it is better to take machines on which the electric motor is located at the rear.
Types of rotation gears on the machine spindle
Rotation is transmitted to the disk through a gearbox. But a belt drive can be used. Each of the methods has its pros and cons. So, the belt drive is very quiet. However, if oil gets on the belt or pulley, it can cause an accident. In addition, slippage of the belt is possible with rapid infeed. This can result in costly equipment repairs. The gear train (reducer) guarantees work without slippage, however, it is accompanied by noticeable vibrations, which leads to accelerated wear and chipping of the working part of the cutting tool.
Choosing a miter saw blade for metal
210-315 millimeters - the range of outer diameters of the disks. The inner diameter (landing hole) is standard and is 30 millimeters. The tool can be easily changed if necessary. Experts recommend buying a set of discs of various diameters at once. This will allow you to use the tool resource as efficiently as possible and select the optimal modes for processing materials.
When choosing a disc, consider the material for which itintended. As a rule, this information is indicated by the manufacturer on the tool packaging.
Besides, not every disc can be installed on certain machines. In other words, in some cases there are restrictions on the diameter of the installed saw. If the recommendations from the manufacturer are neglected, the electric motor may burn out.
Of course, there must be no damage on the surface of the instrument. Any pothole and even a scratch can serve as a concentrator of destructive stresses. Such a disc can simply collapse during operation and injure the worker.
Tool manufacturers
The most famous company for the production of metal blades for miter saws is Makita. The tool, equipment and consumables from this company have gained popularity all over the world due to their high reliability and quality. A feature of Makita miter saws is the traction function. Not every manufacturer was able to implement such a design solution.
It is also worth noting such manufacturers as Bosch and Interskol. Products under these brands may cost a little more. But it is better not to save on quality and safety.
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