Basic operation. Grooving. Fagor CNC 8055 for lathes, CNC 8055, CNC 8055 for other applications

Operating manual

3.9.3

Basic operation. Grooving

The machining steps in this cycle are as follows:

1.

If the operation has been programmed with another tool, the CNC will change the tool and will move to the change position if so required by the machine.

2.

The spindle starts with the speed selected and in the direction stated.

3.

The tool approaches the starting point (Xi, Zi) in rapid, keeping the selected safety distance according to axes X and Z.

3.

X

Xf, Zf

Z

Xi, Zi

X

T

X

Xi, Zi X

Z

T

Z

Xf, Zf

Z

4.

Roughing operation, with successive grooving passes, up to a distance from the final depth equal to the finishing stock.

This operation is carried out with the conditions set for the roughing operations; however, the

CNC calculates the actual (real) pass so all the facing passes are identical. This pass will be equal to or under the defined value



.

X X

T

Xf, Zf

Xi, Zi

Xi, Zi

T

Z

Xf, Zf

Z

Each machining pass is done as shown in the figure, starting at point "1" and after going through points "2", "3" and "4", ending at point "5".

5.

Finishing operation.

If the finishing operation has been programmed with another tool, the CNC will change the tool and will move to the change position if so required by the machine.

The finishing of the part is carried out with the machining conditions set for finishing; feedrate of the axes (F), spindle speed (S) and turning direction.

X X

T

Xf, Zf

Xi, Zi

Xi, Zi

T

Z

Xf, Zf

Z

6.

Once the operation or cycle has ended, the tool will return to the position it occupied when calling the cycle; i.e. to the point where [START] was pressed.

When executing an entire part, combination of operations or cycles, the tool does not return to that point after executing each cycle.

7.

The CNC stops the spindle, but it keeps the machining conditions set; tool (T), feedrate of the axes (F) and spindle speed (S).

CNC 8055

CNC 8055i

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3.

Operating manual

Considerations

How to leave out the roughing or finishing operations.

By selecting T0 as the roughing tool, the cycle does not execute the roughing operation. This means that after approaching the finishing operation will be carried out.

By selecting T0 as the finishing tool, the cycle does not execute the finishing operation. In other words, after the roughing operation, the tool will move to the approach point maintaining the safety distance from the starting point (Xi, Zi).

Different Xi and Xf coordinates.

When the surface to be machined is not totally cylindrical (different Xi and Xf coordinates), the CNC analyzes both coordinates and takes as the X coordinate of the starting point the one farthest away from the final depth.

X X

Xf, Zf

Z

Xi, Zi

X

T

Z

Xi, Zi

Z

X

T

Xf, Zf

Z

CNC 8055

CNC 8055i

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