This machine is in itself a very simple combination of two positions: planing and planing. (Non-contractual photo, does not necessarily reflect the drawing)
It is the same tool shaft that rotates in both cases. In the alignment position, the parts pass over the tree, while they pass below in planing. There are also machines to plan without planing position, and for the only training parts. Such a machine is indispensable to any amateur who works the wood regularly. It allows him to buy wood directly in a sawmill (sawn timber).
The use of this machine requires a maximum of precautions and in particular at the level of the personal protection (position corporelle,) of the clothing (no loose clothes and shirts with long sleeves raised) and the hair (long hair brought under a hairstyle).
The alignment position is used for dressage, that is to say for establishing flat square surfaces. The planing position ensures the dimensioning and gives the parts their finishing before assembly.
To switch to planing position, the planing tables must be raised to discover the planing table. The transition from one position to another takes place very quickly.
Characteristics of the planer jointer
The blade shaft rotates at high speed so that the attack of the wood is done in good conditions. The maximum speed can be 8000 rpm. The machine is equipped with a powerful single-phase or three-phase motor (2,000 to 3,000 W). The planing tables are made of cast aluminum.
The length of the workpieces is directly related to that of the tables. This is often 1 m but can reach 1.40 m on some models. The effective width of the blades is the same in planing and planing (200 or 260 mm).
In planing, the lateral guide is tilting on certain models, which allows chamfering. In this position, it is possible to make rabbets (the maximum depth of rabbets is of the order of 15 mm). During the work, the thickness of the chips can be adjusted using a joystick. The planing protector is a piece of wood or plastic that is placed above the shaft and must always be in place when the machine is running.
The effective width of the uncovered slats is always hidden by the protector. In planing position, it is especially the maximum height of passage that characterizes the machine. It is of the order of 150 mm, which allows the planing of most carpentry parts.
The thickness of the planing is obtained precisely by adjusting the planing table. It is mounted and lowered by maneuvering a steering wheel. A graduated ruler allows you to directly read the thickness of planed parts.
The length of the planing table varies between 400 and 600 mm. The thickness of the chips is adjustable in the same way in planing and planing (from 0 to 3 mm). A vernier makes it possible to directly read the exact thickness of the chips. A drive mechanism automatically moves the parts in the planer.
These are adjustable clutch release rollers. On some models, the advance is made indirectly by the blade shaft. This system ensures the synchronized slowdown of the workpiece when braking the blade holder. In the rugged position, the shaft is surmounted by a protective cover and ejection chips.
Blades and accessories
The shaft receives two blades set at the factory, locked by wedges (conical corners). These high speed steel blades can work long without being sharpened. There are also blades (or irons) tungsten carbide recommended for the work of laminates. When changing the blades (sharpening or replacement), it is necessary to make an adjustment. This job is pretty delicate the best is to use a template adjustment that facilitates the operation.
Manufacturers generally provide a jointer-planer support table. The machine must in fact be placed on a solid support on which it is fixed.
Highly appreciated in the workshop, the suction hood fits on the machine, in both positions for the evacuation of chips and sawdust (with suction unit). For the training of very long parts, it is possible to use an adjustable height roller maid that supports the ends of the boards as they pass through the machine.
On the same topic
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- How to use a planer?
- Use a jointer to work the wood
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