The milling housing, also called the “head” or simply the “head”, moves up and down the guide bars, which are rigidly fixed to the support platform. When the operator pushes the handles, the head goes down, when the pressure is relaxed, the springs return it to its original position.
On the shaft of the electric motor (spindle), by means of a collet clamp a milling cutter is fixed. When the head is lowered, the milling cutter is smoothly immersed in the workpiece material to a predetermined depth, the latter being adjusted by means of an abutment. When the tool is subsequently moved horizontally, the sharp edges of the cutter drill a groove.
- Collet for fixing the milling cutter.
- Supporting platform
- Step depth limiter for milling.
- Grip handle.
- Vertical stop.
- Handle for fine-tuning the depth of milling.
- The regulator of the number of revolutions of the milling cutter.
- Milling machine housing with an installed electric motor.
- Lock the random switch.
- Fine adjustment knob for parallel stop.
- Parallel stop.
- The tightening lever.
- Mouse on / off button.
- Screws for adjusting the parallel stop.
- Guide Rods.
What specifications should be considered when choosing a router
The capabilities of the router are largely determined by the power of the electric motor that it is equipped with. The more power consumption of the unit, the greater the maximum permissible diameter and length of the milling cutter that can be installed on it, the longer it will be able to work continuously without overloading. It would seem that if you do not take into account the financial side of the issue, then the best router should be considered the most powerful. However, in fact, everything is not so simple. The increase in power entails a significant increase in the mass and dimensions of the engine, and therefore of the entire tool.
In this parameter, the milling cutters are divided into:
Specialists for regular milling work recommend a tool with a capacity of at least 1500 W. A powerful router, of course, can easily cope with any professional tasks. However, when performing a number of fine works, for example, when processing the edge, it will not be easy to cope with a heavy and oversized machine, especially for a beginner.
Your task at the stage of choosing the tool is to analyze the intensity and nature of the work that is supposed to be performed with the help of the router and find that very golden mean – a tool whose power will not be excessive, but sufficient for solving the tasks, long work without break, hardwood processing, you can try this http://www.bigartblog.com/how-to-select-the-right-wood-router/.
Spindle rotation speed
The importance of such a technical characteristic of the router, as the spindle rotation frequency, is accessible for understanding even by the most technically unprepared users. The greater the speed of rotation of the mill, the higher the quality of the treated surface. If high precision is required, it makes sense to work at a lower speed. A small speed of rotation is also needed when processing plastic, otherwise there will be overheating of the working area and, as a consequence, melting of the material.
The frequency of rotation of the spindle of most mills lies in the range of 20 to 30 thousand revolutions per minute, but they are found both slower (10-20 thousand rpm) and faster (up to 35 thousand rpm) operating aggregates. It should be taken into account that the larger the diameter of the milling cutter used, the smaller the angular velocity of rotation, since the linear velocity of the point on the periphery of the circle will still be high enough, and if the milling is “accelerated” even more, the tree begins to burn.
Since the optimal spindle speed depends on the size of the currently used cutter, the depth of processing and the density of the workpiece material, it will be very useful to adjust the speed, which determines the functionality of the router. The adjustment can be smooth or stepped (up to 8 positions). The milling mode optimal for these conditions is chosen by the operator himself, relying on his practical experience, however manufacturers often indicate the recommended values in tool certificates or on mills.