Siemens EF 83P Series Instrukcja Obsługi Pobierz pdf (Strona 11)

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1. Safety Regulation.

1.1 Check Points for Safe Operation

When using your CNC lathe, always make sure the following

conditions or operations are in effect. Failure to this will reduce

cutting accuracy and may be the cause of accidents.

(1). When chucking a workpiece, check both the chucking method

and the pressure while considering the rigidity of the workpiece

so as not to cause chucking distortion.

(2). Make sufficient chucking allowance so that the workpiece cannot

jump out from the chuck, either by cutting force or centrifugal

force of the spindle. The workpiece may be supported by the

tailstock, if necessary.

(3). If the workpiece is an eccentric or irregular shape, so that the

center of gravity or the workpiece is outside the center of rotation,

this eccentricity will cause the spindle vibrate during rotation,

adversely affecting overall cutting accuracy. To counteract this,

attach a balance for the workpiece.

(4). If chips are stuck to the workpiece or to the tool, the desired

accuracy of cutting face may not be obtained, Select appropriate

tools to prevent chips from sticking to the tool and workpiece

(5). Before selecting tools, check the tools thoroughly so as to

prevent any interference between the tool and workpiece, chuck,

jaw, tailstock, cover, etc..

(6). A wide variety of materials and shapes are used as workpieces to

be cut. Always set the appropriate cutting conditions for each

material and shape to obtain the desired accuracy of the

particular product.

(7). At actuation of the machine an before cutting, warm up the

spindle and move the turret and slideways for a period of time to

reach proper operating temperature. This is necessary to reduce

the influence on the workpiece by thermal displacement.

(8). When cutting the bar material using a bar feeder and a hole

through spindle, use only absolutely straight bar material since

the accuracy of the workpiece is influenced by curve of the bar

material.

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Siemens EF 83P Series Instrukcja Obsługi Strona 11