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TSB-VTL 01TSB-VTL 01ISSUE DATE:- 21/12/17ISSUE DATE:- 21/12/17

RAIL WHEEL FACTORY KNOWLEDGE CENTER ON WHEEL SHOP MACHINES RAIL WHEEL FACTORY KNOWLEDGE CENTER ON WHEEL SHOP MACHINES

TROUBLE SHOOTING BOOKLET ON TROUBLE SHOOTING BOOKLET ON ''VERTICAL TURRET LATHE''''VERTICAL TURRET LATHE'' COVERING TYPICAL COVERING TYPICAL PROBLEMS ENCOUNTERED BY RAILWAY WORKSHOPS & PRODUCTION UNITPROBLEMS ENCOUNTERED BY RAILWAY WORKSHOPS & PRODUCTION UNIT

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This Trouble Shooting Booklet (TSB) issued by RWF Knowledge Center covers mainly those problems which are not covered in normal trouble shooting guide given by OEM's and were hi-lighted by participants from Zonal Railways/Production Units in the seminar / work shop / training session organised at RWF Knowledge Center

The approach in preparing the Booklet has been:

(1) For the given ''Problem''- list all possible causes.

(2) Then give cause wise solution using pictures and bulleted text for easy of understanding of user.

(3) The copy of TSB is also being shared with participating Zonal Railways / Production Units staff through dedicated “Whatsapp Group” and dedicated “Email Group” (which are getting increasingly patronised).

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PROBLEM:- 1) STEP FORMATION AT THE PROFILE WHILE TURNING WHEEL PLATESL NO POSSIBLE

CAUSEREMIDIES PICTURES

1 a)Taper jibs over tight or loosen

Adjust Taper jibs at both side uniformally

TAPER JIBS

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PROBLEM:- 1) STEP FORMATION AT THE PROFILE WHILE TURNING WHEEL PLATESL NO POSSIBLE

CAUSEREMIDIES PICTURES

1 b)Z (axis) excess backlash.

Inspect Ball screw backlash and ensured proper tightness

Z-AXIS

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PROBLEM:- 1) STEP FORMATION AT THE PROFILE WHILE TURNING WHEEL PLATESL NO POSSIBLE

CAUSEREMIDIES PICTURES

1c)

Restriction of oil release from counter balancing cylinder.

Adjust the Oil cushioning pressure of Counter balance cylinder

COUNTER BALANCING CYLINDER

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PROBLEM:- 1) STEP FORMATION AT THE PROFILE WHILE TURNING WHEEL PLATESL NO POSSIBLE

CAUSEREMIDIES PICTURES

1 d) Keeper plate fasteners loosen.

Inspect and ensure the saddle keeper plate Allen screw for proper tightness.

KEEPER PLATE [are fitted inside]

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PROBLEM:- 2) MACHINE TRIPPING WHILE TURRET SADDLE HORIZANTLE MOVEMENT.SL NO POSSIBLE

CAUSEREMIDIES PICTURES

2a)Uneven adjusted of saddle jibs

Adjust the Saddle taper jibs uniformly

SADDLE JIBS

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PROBLEM:- 2) MACHINE TRIPPING WHILE TURRET SADDLE HORIZANTLE MOVEMENT.SL NO POSSIBLE

CAUSEREMIDIES PICTURES

2b) Lack of lubrication on slide ways

Clean the Slide ways with suitable cleaning oil and lubricate.

LUBRICATION SLIDE WAYS

OIL PUMP

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PROBLEM:- 2) MACHINE TRIPPING WHILE TURRET SADDLE HORIZANTLE MOVEMENT.SL NO POSSIBLE

CAUSEREMIDIES PICTURES

2c)

Ball screw motor and timer belt pulley alignment

Align the Ball screw motor pulley and tight the timer belt pulley tension

BALL SCREW MOTOR PULLEY

TIMER BELT

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PROBLEM:- 2) MACHINE TRIPPING WHILE TURRET SADDLE HORIZANTLE MOVEMENT.SL NO POSSIBLE

CAUSEREMIDIES PICTURES

2d)

Ball screw and bearing faults.

Check the ball screw locking nut for any loosness. Tightned the chuck nut for proper preloading.

BALL SCREW

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PROBLEM:- 3) MACHINE TRIPPING WHILE TURRET SADDLE HORIZANTLE MOVEMENT.

SL NO POSSIBLE CAUSE

REMIDIES PICTURES

3

Erratic movement of turret head down wards

Observe misalignment of ball screw and adjust. Check for Vertical traverse ball screw lock nut for proper tightness

TURRET HEAD FORM TOOL

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