Основной каталог Kyocera 2021 - 2022 - страница 736

Lathe installation

1. The top face of the outer insert should be parallel to the X-axis to allow

for offset cutting. (Drill diameter can be changed by moving X-axis.)

2. It is recommended to set the outer insert as shown in Fig. 1

with the outer insert facing the operator. (Fig. 1)

(It is also possible to use it by setting it in 180° reverse position)

If the lathe has two turrets, when installing the drill into the lower turret, the outer insert should be set to face the operator.

(It is also possible to use it by setting at 180° reverse position)

Turret

X-axis of the machine A Moving direction of X-axis Inner edge Flat cutting

Flange Outer edge

A

Fig. 1 Installed into the lathe

Drill diameter adjustment

1. Drill diameter adjustment

1. Drill diameter is adjusted by moving X-axis. The moving direction of the X-axis depends on the position of the toolholder. 2. In case of making the hole diameter larger, slide the tool along the X-axis toward the outer insert side. (Fig. 2, Fig. 3) For making the hole diameter smaller, slide the tool along the X-axis in the opposite direction.

(This movement of the axis is called “Offset”)

However, be sure not to make the hole diameter smaller than the drill diameter by 0.2mm or more. Otherwise, the toolholder will interfere with the drilled hole. (Fig. 4) e.g.) In case of using ø20 drill, the hole diameter must not be smaller than 19.8mm.

2. Offset Limit of the Drill Diameter

For the maximum limit of the drill diameter, refer to “Max. Offset (Radial)” in the toolholder dimensions table.

(The figure in the table shows how much it is possible the offset the drill in the radial direction. )

When using ø20 drill, for example, it is possible to make a hole up to ø21.1 since "Max. offset (Radial)" is +0.55mm.

KK

Smaller − Larger + − Interference Larger Drill dia.

X-axis of Flange Outer edge

the machine X-axis of the machine A A Outer edge A

Flange Flat cutting Outer edge

Flat cutting A Center of drill Center of spindle

Fig. 2 Outer insert facing up Fig. 3 Outer insert facing down Fig. 4 Excessive offset (For smaller hole diameter)

Center height adjustment Inner edge 1. Center Height of the Inner Insert When installing inner insert as shown in Fig. 1, it will be set around 0.05mm below the center of spindle. (Fig. 5) About 0.05mm below the center

This is the normal position of the center height and the drill is designed to be handled in this condition.

However, in case that the turret of the lathe is out of the center of spindle, sometimes the inner insert may

be set above the center, or excessively below the center. Center of spindle For stable drilling, it is essential to check the center height carefully.

2. How to Check the Center Height Fig. 5 Front view of the drill

For checking the center height of the inner insert, see the core which remains at the center of the end

face of the drilled hole. (Fig. 6)

If the center height is in the normal position, a core about 0.5mm in diameter, will remain after machining. Core (About 0.5mm in diameter) Adjustment of center height is required if a large core diameter of 1mm or more remains.

* The drilled hole for verification purposes needs to be machined at approximately

10mm in depth and at a feed rate of 0.1mm/rev or lower.

Fig. 6 Center core