Welcome to IMTMA Technology Blog. Here you can browse through the training reports, press releases and articles of interest for machine tool industry and IMTMA Technology Centre.

Design of Spindle - Specialization

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Design of Spindle - Specialization

A six - day course on 'Design of Spindle - Specialization' was conducted in Gurgaon from June 20 - 25. It was structured considering Machine tool spindle as the most sophisticated member in machine tool and which plays a vital role for better performance, higher efficiency and accuracy. Design of spindle being a very important and a critical activity of machine tool design process.

The program started with an introduction to the spindle by Mr. H V Rajashekara, Sr. Director - Design Institute, with over 27 years of experience at HMT and Johnson Electric. Topics delivered by him were Introduction to CNC Machine Tool Spindles, Spindle Specification & Design Calculation, 2D Conceptual Spindle Layout, and Sketching of Assembly & Parts.

On the third day participants were trained in SOLIDWORKS by Mr. Rahul Vylen, on modules like part modelling and assembly and the on the fourth day, delegates developed a real time spindle for a particular application. Topics on Spindle stiffness calculation and bearing life calculation were also discussed on first principle basis.

On the fifth day, Mr. G Baskhar, carried the project further in terms of pulley and key design along with calculations. On the final day Mr. M A Khallaq, Managing partner M/s XL CNC and an ex-HMT as a Dy general Manager, severed the R & D dept, discussed Design of Boring and Grinding Spindles.



Turning centre Spindle – A25


A total of 8 candidates attended the from various industries viz. Bansal Brothers, Bestek Engineering Pvt Ltd, Jyoti CNC Automation, Macht Technologies Pvt Ltd, Micromatic Grinding Technologies Ltd., Raj Hans Pressing Pvt Ltd, Rimaco Machines, and Turntro Mechanical Works

Feedback

  • I enjoyed all my six days here and learnt a lot. Special thanks to Mr. M.A Khallaq for clearing all doubts regarding our queries, all the faculty members were outstanding specially Mr. Rahul Vylen
    - Mr. Karun Kumar
  • The course was very good and effective. I request IMTMA to include and start elaborate courses on Gear and CAM Manufacturing
    - Mr. Harpreet Singh

Basics of Programming & Operation of CNC Machining Centres

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Basics of Programming & Operation of CNC Machining Centres

CNC machines have become the order of the day in every manufacturing industry. These applications are widespread in mass production units, batch production as well as in tool room industries. Thorough understanding of programming and operation of CNC machines is a must in order to realize maximum output.


Keeping this in view, Indian Machine Tool Manufacturers' Association (IMTMA) organized a 5 day programme on Basics of Programming and Operation of CNC Machining Centres from 23 - 27 May 2016 at IMTMA Technology Centre in Pune.

 

The programme primarily focussed on:

  • Elements and different modes of CNC machining centre.
  • G and M codes applicable to CNC machining centre.
  • Structure of a CNC programme for CNC machining centre.
  • Work and Tool set up; cutter radius compensation.
  • Dimensional control; correction of wear offset for achieving tolerances.
  • Selection of tools and machining parameters.
  • CAM programming – Usage and advantages.
  • Autonomous maintenance principles - Procedure and check points.
  • Hands-on practice in CNC vertical machining centre.


The training programme was conducted by industry experts from IMTMA Technology Centre. Delegates from John Deere and Kennametal India attended the programme.

Robots Operation and Programming

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Robots Operation and Programming

Robots have been proven to deliver a host of benefits in a wide variety of industrial applications including material handling/assembly, arc / spot welding, painting, deburring, plasma cutting, etc. Industries introducing robots to their production processes have typically seen a significant transformation in their productivity and efficiency, with higher levels of output and consistent product quality. Yet another advantage with Robots is the flexibility in automation as they can be re-programmed, whenever new products are launched.


The market for industrial robots is rapidly growing in India, as industries are looking forward for more and more robotization. Though the robotic revolution in India is driven by the automotive industry, other applications like machine tending, foundry, medical components processing, etc., are also growing. Keeping this in view, Indian Machine Tool Manufacturers' Association (IMTMA) organized a 3 day hands-on training programme on Robots Operation and Programming on 13 - 15 April 2016.

The training programme focused on :

  • Types and applications of Robots
  • Robot controller and mechanical unit.
  • General safety precautions
  • Manual jogging of Robot
  • Creating a program
  • Different motion instructions, J, L& C
  • Simple teaching / changing a motion instruction / program editing
  • Hands-on practice of Robot Operation thro sample programs
  • Hands-on practice of creating programs using different instructions
  • Tool frame & user frame
  • Robot interface with peripheral devices
  • I/O's used in Robots
  • Uploading and downloading of programs / automatic backup
  • Macros
  • Mastering / Robot mastering exercise
  • Position registers and offset programming using position registers
  • Different start modes: cold, hot & controlled
  • Trouble shooting and alarm screens


The programme was conducted by industry experts from IMTMA Technology Centre and FANUC India. Delegates from Robert Bosch Engineering and Business Solutions, Toyoda Gosei South India, X-Flow Technologies, and Tata Hitachi Construction Machinery attended the training programme.

Gear Manufacturing Processes

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Gear Manufacturing Processes

Gear manufacturing is a fairly complex metal cutting process and forms an integral part of many industrial products. Gears and Gear drives are one of the key components of all kinds of vehicles, machine tools, aircrafts, household appliances as well as a broad variety of industrial equipments. Proper understanding about the various Gear manufacturing processes and controlling parameters is essential in order to meet the growing demands for better productivity and quality of gears.

Keeping this in view Indian Machine Tool Manufacturers' Association (IMTMA) organized a 3 day programme on Gear Manufacturing Processes from 18 to 20 April 2016 at IMTMA Technology Centre in Bangalore.

The programme dealt with the following:

  • Introduction and overview of Gear terminology
  • Process flow of Gear manufacturing
  • Gear blank preparation
  • Gear hobbing - process parameters; work set up and Hob set up methods; process optimization and productivity improvement
  • High speed gear Hobbing with case studies
  • Gear shaping - Working principle; process parameters; work set up and cutter set up methods
  • Shaping of internal and external gears; Industry application examples
  • Gear shaving – Working principle; advantages and limitation; industry application examples; process capability in terms of gear quality and surface finish
  • Cutting tools for hobbing, shaping and shaving
  • Gear heat treatment
  • Gear grinding - Need for Gear grinding; advantages and limitation; industry application examples
  • Types of grinding machines
  • Gear Grinding - process parameters; work set up and wheel set up methods; process optimization
  • Gear Finishing - bore, face grinding, coatings


The programme was conducted by Mr. Ved Parkash, former Head - Quality & TQM at Ashok Leyland and Head - Quality at Hero Honda Motors and industry experts from Liebherr Machine Tools & LMT India. Delegates from HMT Machine Tools, Sphoorti Machine Tools, S & T Engineers, Shakthi Tech Manufacturing, RACL Geartech, Sanjeev Auto Parts Manufacturers, Amalgamations Repco, MSC Software Corporation India, Bharat Forge, Renault Nissan Technology and Business Centre India, and Hillman Gear attended the training programme.

Inspection, Testing & Calibration of CNC Machine Tools

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Inspection, Testing & Calibration of CNC Machine Tools

CNC Machines are deployed in diverse range of manufacturing industries. Users need to test Machine tools at the time of purchase and also periodically during its use and operation. Evaluation needs to be done in accordance with international standards & procedures which can be broadly categorized into three areas, mainly geometrical alignment test, functional and machine accuracy capabilities. Conventional testing methods of machine tools are limited essentially to static measurement of geometrical machine structures under 'no load' conditions. However, the performance of a machine tool is evaluated in terms of compliance to tolerances, surface finish of components and so on. These are essentially determined by static and working accuracy of machine movements. A proper knowledge of static and working test, positioning and repeatability test, cutting trials on standard work piece will help users in assessing the capability of the machine.


Machine tool calibration is rapidly becoming an essential part of the manufacturing process with customers demanding higher accuracy from machine tools for handling precision parts with tighter tolerances. Machine tools are subject to positioning errors which might increase over a period of time due to natural wear and tear or failing parts or worn out moving parts. Periodic calibration helps identify potential problems with machine tools, such as bad bearings, faulty servos, slip-stick conditions, and so on. Hence an early detection enables to schedule preventive maintenance and avoid unexpected downtime, especially during critical production runs. In other words, it is a 'health-check' or 'condition-monitoring' of any machine tool. Thus calibration of machine tools becomes an essential part of predictive maintenance programme in companies to achieve "Doing it right the first time".


Indian Machine Tool Manufacturers' Association (IMTMA) organised a 2 day programme on Inspection, Testing & Calibration of CNC Machine Tools on 27 - 28 April 2016 at IMTMA Technology Centre in Bangalore. The program had focused on machine tool testing standards-dynamic measurements, static measurements, thermal, analysis, accuracy, etc. Machine tool calibrations like errors in machine tools, Linear and rotary calibration methods, ball bar measurements, analysis of calibration results, preventive maintenance trends, volumetric compensation, etc., were also covered. 

Delegates went through a Live Demo of Vibration Analysis (Frequency Response Function), Static Analysis / Power Efficiency, demonstration of Laser Calibration & Ball Bar measurement. The training programme saw participation of delegates from Advanced Machine Tool Testing Facility, Brakes India, DRDL, DVB Design + Engineering, International Aerospace Manufacturing, KEMS Auto Components, Kirloskar Oil Engines, Larsen & Toubro Limited, S&T Engineers, Tata Motors, and WEG Industries (India).

The programme was conducted by industry experts from Renishaw India. The faculty shared their rich experience in testing and calibration of different types of CNC machine tools used in the manufacturing industry.