Overheating of M/c Tool (Special Purpose Lathe) Spindle

TECHNICAL SPECIFICATION

OF

DEVELOPMENT AND SUPPLY OF

TELESCOPIC COVER TEST RIG Customer: M/s. Advanced Machine Tool Testing Facility. CMTI Campus, CMTI. Bangalore 560 022CONTENTSSL. NO.DESCRIPTION

1.INTRODUCTION

2.PURPOSE

3.SPECIFICATION

4.SCOPE OF SUPPLY

5.SCOPE OF WORK

6DOCUMENTATION

7.INSTALLATION AND COMMISSIONING OF TEST EQUIPMENT

8.CALIBRATION FACILITIES

9.MAINTAINABILITY AND SAFETY

10.SPARE SUPPORT

11.WARRANTY

12.TRAINING

TELESCOPIC COVER TEST RIG

1.0 INTRODUCTION AMTTF is a joint project of the machine tool industry and the Dept of Industrial Policy and Promotion (DIPP) of the Govt of India to establish a state-of-the-art machine tool testing facility at the Central Manufacturing Technology Institute (CMTI), Bangalore. This is a dedicated facility equipped with the latest equipment and facilities to test machine tools, accessories, parts and subsystems to establish their performance and reliability against international standards. The facility will help machine tool and related companies to test, trouble shoot and upgrade their products to higher levels of performance. This proposal is made on development of telescopic cover test rig to test the functioning of telescopic covers under varying traverse speed and other conditions for AMTTF. 2.0PURPOSEThe proposed Test Rig is used for testing the functioning of telescopic covers. The test rig is used to monitor the following parameters

A) Traverse Speed: This is measured and displayed on CNC screen

B) Driving Force: This is measured and displayed by measuring the motor current

C) Wear of rubbing elements: This is checked by visual inspection

D) Positioning Repeatability: AMTTF to make suitable arrangement for measuring the positioning repeatability

E) Vibration and Noise at the identified locations: AMTTF to make suitable arrangements to measure the same.

The Test Rig basically comprises of a long Cast Iron Bed (approx 4800 mm long). A slide moves horizontally over anti-friction guide ways bolted to the bed. The slide is driven by a linear motor with its primary element fixed to the slide and the secondary element fixed to the bed. A Linear encoder with its scale fixed to the bed and reader fixed to the slide is used as the feedback device. Bellows are used to protect the Antifriction guides and the linear motor secondary element. A number of adjustable plates are mounted on the bed, which support the telescopic cover to be tested. One end of the telescopic cover is fixed to a bracket mounted on the slide and the other end is bolted to a bracket clamped to the bed. Brackets need to be changed to take care of different size telescopic covers

The Test Rig will be CNC controlled which gives flexibility for programming various strokes and feed rates required to test different types of telescopic covers.

During testing, all the required parameters to be monitored are checked before and after fitting the telescopic cover and the same are compared.

3.0 SPECIFICATIONS 1. Slide stroke (Horizontal)

:3000 mm (max)

2. Linear Motor

:Siemens 1FN6 Series

3. Linear Encoder

:Heidenhain LC183

(0.005 mm accuracy)

4. Max. Reciprocating Speed

:120 m/min 5. Working plane

:Horizontal6. Max. width of telescopic cover:2000 mm4.0 SCOPE OF SUPPLYThe telescopic test rig consists of the following elements.

A Cast Iron Bed (approx 4800 mm long) with sliding bracket to mount the test telescopic cover. Slide with anti-friction guide ways bolted to the bed. Linear motor with drive.

Suitable controller

5.0 SCOPE OF WORK Study of the requirement of the telescopic cover test rig in details

Design of Cast Iron Bed (approx 4800 mm long) with sliding bracket to mount the test telescopic cover. Selection of slide with anti-friction guide ways bolted to the bed. Selection of suitable linear motor with drive. Design of suitable controller

Development of software

Procurement of bought outs and sub contract items

Assembly of the test rig

Inspection and trial running

Training

Documentation

After sales support. 6.0DOCUMENTATION

The following documents will be supplied along with the test rig in soft copies as well as hard copies.

1. Three hard copies of operating Manual (component diagram, electrical layouts, wiring diagrams, list of components with their specs and its supplier details) along with soft copy

2. Maintenance manual & Service manual.

3. Calibration Manual.

4. Spares parts catalogue / manuals.

5. Trouble shooting chart for the test equipment.7.0INSTALLATION AND COMMISSIONING OF TEST EQUIPMENTAfter inspection and approval of the test equipment by AMTTF, the equipment will be installed and commissioned at AMTTF test centre, Bangalore. 8.0CALIBRATION OF INSTRUMENTS All the instruments used in the spindle test rig will be calibrated by standard laboratories before installation and calibration certificates (with traceability) will be supplied along with test rig.9.0MAINTAINABILITY AND SAFETY Design of test equipment will be such that items are easily accessible for maintenance. Control panel rear covers and other cabinet panel will be based on detachable system. Safety requirement such as emergency shut down, interlocking etc. will be provided. 10.0SPARE SUPPORT Necessary spares will be supplied along with the equipment

11.0WARRANTYEntire Test Rig / equipment will be warranted for 1 year from the date of delivery of the same against all the design, manufacturing defects and poor workmanship. 12.0TRAININGCMTI will provide training to AMTTF personnels on operation, maintenance at free of cost at CMTI for a duration of 2 days for 2 persons.

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