Cleaning and Checking Tool Spindle Collet

Interval

500 Hours Operating time

Component

Tool spindle

Depth guage

Torque wrench for 50 Nm

Soft brush

Preparation

Step 1:

There should be no tool in the tool spindle.

Step 2:

The machining unit is positioned such that you can work on the tool spindle without entering the work area.

  • Z-axis moved away from the machining unit.
  • X-axis (Frame) moved towards the work area safety door.
  • Y axis (Machining unit) at shoulder height.

Step 3:

Motors are switched on.

Step 4:

Loading hatch closed.

Step 5:

Open collet with individual function.

Step 6:

Open work area safety door.

Cleaning and Checking Tool Holding Fixture

Step 1:

Clean the planar support with a cloth and check for wear and damage, such as scoring and scratches.

Step 2:

caution:
Crushing hazard on open collet. If the power supply fails, the collet closes automatically. Use a suitable brush to clean the inside contour of the spindle. Do not reach into the open collet.

Clean the inside contour of the spindle with a soft brush and check for wear and damage, such as scoring and scratches.

Step 3:

If the tool holding fixture is damaged, have the tool spindle replaced by customer services. Do not operate machine with damaged tool holding fixture!

Checking Collet

Procedure

Check collet for wear, damage and sufficient lubrication.

Replace worn or damaged collet. Lubricate the dry collet with Moly-Spray 70-82.

For procedure see Subsuppliers' Information (ZI) from "Ott-Jakob".

Checking Adjustment Setting

Procedure

Check the adjustment setting of the collet against manufacturer's data and correct if necessary.

For manufacturer's documentation on the collet, see Subsuppliers'Information (ZI) from "Ott-Jakob".

If the adjustment setting is to great, the collet has worked loose. Tighten collet with 50 Nm.

Checking Bar Seal

Procedure

Check condition of the clamping seal.

Replace damaged bar seal so that no high-pressure cooling lubricant can penetrate the tool clamping system.

For procedure, see: "Replace bar seal"

Close

Step 1:

Before closing the safety doors, ensure that nobody is behind the guard panels. Close and lock the work area safety door.

Step 2:

Close collet with individual functions.

Step 3:

Place a tool in the tool spindle to protect the tool spindle from the ingress of dirt.

Step 4:

Switch off motors.

Replacing the Collet

Spare part

Collet

See wearing and spare parts list (VS)

Assembly aid number 786.15090.007.0 by Messrs. Berg (supplied with the collet)

Depth gauge

Torque wrench for 50 Nm

For manufacturer's documentation on the collet, see Subsuppliers' Information (ZI) from "Berg".

Step 1:

Collet opened.

Step 2:

Work area safety door opened

Step 3:

Loading hatch closed.

Step 4:

Replace collet according to the installation of Berg and set to adjustment setting.

Step 5:

Close and lock the work area safety door.

Step 6:

Close collet with individual functions.

Step 7:

Place a tool in the tool spindle to protect the tool spindle from the ingress of dirt.

Step 8:

Switch off motors.

Replace Bar Seal

Spare Part

Bar seal

See wearing and spare parts list (VS).

A tool with mounted cooling lubricant pipe, Slot-type screwdriver, width 5.5 mm

A new bar seal must be calibrated. To do this, you must insert a tool into the collet.

The collet features a latch which holds the tool even in the "unclamped" position. The collet engages easily, but it has a high retaining force, so you need al screwdriver as leverage to remove the tool.

Step 1:

Remove bar seal from the ring groove carefully using a scribing tool.

Step 2:

Oil new bar seal and inset inside the ring groove.

Step 3:

warning:
Danger of becoming trapped when the tool engages in the collet. Hold the tool in such way that your hand cannot be trapped between tool and tool spindle.

Calibrate bar seal:

  • Insert a tool with mounted cooling lubricant pipe into the collet and let engage. Exercise caution when inserting the cooling lubricant pipe into the new bar seal.
  • Allow tool to rest for 3 minutes.

Step 4:

Remove the tool:

  • Hold tool in place.
  • Place screwdriver between two location segments.
  • Press off tool with a rotational movement.

Step 5:

Before closing the safety doors, ensure that nobody is behind the guard panels. Close and lock the work area safety door.

Step 6:

Close collet with individual functions.

Step 7:

Place a tool in the tool spindle to protect the tool spindle from the ingress of dirt.

Step 8:

Switch off motors.