Robland T-120 L, Руководство пользователя

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the cutting tool and the guide fences.
Using the spindle fence when the total length of the machine has to be machined
In most cases a straight guard fence is used. In this way the pieces can be guided in the angle made by the table
and the fence. The vertical and horizontal pushers can be placed in such a way that a tunnel is formed in which
the first piece can be pushed. The second piece is then used to push the first, the final piece has to be pushed
forward with a wood pusher.
Special blocks have to be used relative to the dimensions of the work piece.
When working thin panels, only the top of the spring has to be used, on condition the thickness matches.
On a spindle-moulder, the distance between the extremities of the spindle guard fences must be large enough to
leave enough space for the cutter block. Thus the knives, the cutter block and the spindle shaft may be exposed
and the extremity of the piece may come in contact with the nose of the exit guard fence.
These risks can be avoided by using a false fence between the spindle guard fences, thus limiting the opening
between them.
Using the spindle guard fence when only a part of the piece is machined
When using the spindle fence between 2 stops fixed onto the machine table or fences, only a part of the work
piece is machined. By doing so, the cutting tool starts machining the work piece in the full section of the wood
and doesn't start at the front, this way the cutting action is more gradual and less severe, and the cutting action is
stopped before the workpiece end is reached. This action is very dangerous and needs special attention and care.
A stop solidly fixed at the front and back has to be used (see the example used further in this manual).
A piece may only be guided by hand when it is sufficiently large. In all other cases a gauge or a support with
protection has to be used in order to avoid serious accidents. By means of the gauge, the piece can quickly and
precisely be put in place and firmly be held there. A quick clamping system, working with tumblers or cams, is the
most practical to hold the piece. When front and backstops are fixed to the spindle guard fence or to the table, a
better control of the gauge is possible.
Working with the ring guard
When working with the ring guard, a support has to be used, unless a certain process doesn't allow this, i.e.
when the work piece is too large or too small, or when too difficult to machine it cannot be held in the support
without danger. The final shape is obtained by holding the gauge against a guidance bearing which is fixed to the
spindle while the piece is held against the tool. The gauge can be part of the support.
Chamfering
When chamfering a solid support or a tilt adjustable spindle, a guard fence has to be used. A wood-pusher has to
be used for the final part of the machining.
Working in the direction of the tools
It is extremely dangerous to work in the direction of the tools, as the operator cannot exert force to resist the
strong movement of the piece when the tool comes into contact. Working in the direction of the tools is
forbidden, even when a support is used.
Other machining
For other types of work, e.g. tenoning, special gauges or supports can be used in order to avoid accidents.
The following safety accessories can be used to help the operator during his work:
- supports,
- wood pushers,
- power feeders,
- rollers,
- stops.
Reasons for tool rupture
Following reasons may lead to a tool rupture:
- grinding cracks or a change of the cutting geometry due to improper sharpening
- jerky movements of the work piece
- jamming of tool by waste piece
- overheating by friction due to slow feed rate or too low cutting depth, as well as due to dull cutting edges
- too high feed rate
- too large cutting depth
- insufficient clamping of the tool
- vibration of the machine.
Operation
- Danger of injuries or crushing by the rotating tool
- Do not touch the rotating tool
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