INDIAN INSTITUTE of TECHNOLOGY BOMBAY Materials Management Division for IIT Dharwad

INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Setting up Computer aided drawing and manufacturing (CAD&M) center at IIT Dharwad

(CNC Milling, CNC Lathe, BENCH DRILL, Mitre saw, Bench Grinder, Welding table with fume extractor, Portable Brazing and cutting machine)

We intend to purchase CNC Milling, CNC Lathe, BENCH DRILL, Mitre saw, Bench Grinder, Welding table with fume extractor, Portable Brazing and cutting machine for CAD&M at IIT Dharwad for academic purpose. Quotations are invited from the eligible bidders for providing the mentioned products as per detailed technical specifications provided in technical requirements section. The proposed system should be equivalent with or better than each of the specifications listed in the technical requirement section.

Please follow the instructions carefully and comply your bid accordingly. If any of the instructions are not followed or violated, a submitted bid will be subjected to disqualification.

The vendor to provide the following in the quote

1. The quotations must be submitted in two separate envelopes namely “Technical quote” and “Price quote” and these two parts of the quote are to be clearly marked on the envelopes. The technical quote should provide the detailed technical specifications and photographs of the proposed machines. The additional accessories offered by the manufacturer can also be included. The technical quote should contain only technical specifications without any prices. The price quote should contain the technical specifications as well as prices in detail. 2. Submit detailed technical specifications of CNC Milling, CNC Lathe, BENCH DRILL, Mitre saw, Bench Grinder, Welding table with fume extractor, Portable Brazing and cutting machine. The technical quote should contain detailed specifications vise “Technical Compliance” statement, authenticated with signature and seal of the prospective supplier. The bid should state whether the proposed machine satisfies or doesn’t satisfy the specified requirements. If the value offered by proposed machine doesn’t satisfy the required specifications or in case of any ambiguity in the specifications, the bid will be subjected to disqualification. 3. The prospective supplier should be either original manufacturer or authorized dealer of the original manufacturer of the proposed machine. In case of authorized dealer, the INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

technical quote should contain a valid original certificate provided by the original manufacturer addressed to IIT Bombay. 4. Attractive discount for an educational institution should be offered. 5. The prospective supplier is expected to have supplied (CNC Milling, CNC Lathe, BENCH DRILL, Mitre saw, Bench Grinder, Welding table with fume extractor, Portable Brazing and cutting machine) to at least 2 government institutes or national laboratories such as IITs, IISc, NITs, NML, DMRL, NAL etc. Provide the details of 5 users in India for getting first hand feedback about the product and service. 6. The software for CNC should be compatible with the latest versions of windows operating system (minimum windows 7). Free up-gradation of softwares should be provided for 5 years. 7. Support of hardware and spares for 10 years should be provided, even if the model is discontinued by the company. 8. Guarantee and warranty of the product should be provided. The price quote should include 3 years warranty and cost of annual maintenance contract (AMC) for the period of 3 years. 9. Quotes to be submitted by the vendor’s principal in foreign currency. 10. 90 % payment will be made after shipment & 10 % after successful installation. If the machine fails to meet the specified requirements, the vendor will be held liable to take the machine back at their own cost. IIT Bombay will not be responsible for any damage to the machine until it is handed over to the user. 11. The firm should have adequate number (at least 10) of such systems (currently in operation for more than 5 years). Manufacturer should furnish the detailed addresses of such establishments where they have supplied similar equipment and running successful for more than 5 years. 12. The firm should be equipped with well-trained engineers to offer post warranty maintenance and service support. Number of service engineers employed in this region by manufacturer should be mentioned. 13. Nearest service center to Dharwad is to be mentioned. 14. Agent should have exclusive agency for last 5 years or more. Copy of certificate for such exclusive agency is mandatory. 15. All equipment must be directly supplied and installed at IIT Dharwad. 16. One trained and qualified engineer should be employed for initial three months in IIT Dharwad for training and successful running of the systems at the cost of agency. INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Technical Specifications

A)CNC Lathe: Quantity 6 Nos.

1.1. Lathe:

Length between centers: 390-410 mm Height of centers: 80-90 mm Maximum work piece diameter: 100 mm Minimum work piece diameter: 2mm or less Machine base: Cross-ribbed surface, high-quality cast iron with ground prismatic guide, must be capable to readily adopt milling/drilling attachment.

Spindle: Oversized main spindle, supported with adjustable taper roller bearings Spindle drill hole: In the range of 15-25 mm Spindle concentricity: Max. 5/1000 mm Chuck: RÖHM-3 jaw chuck as per DIN 6386 or equivalent, centrically clamped,100 mm diameter Run out without chuck: Max. 1/100mm Sleeve receiver: retractable sleeve with scale Spindle speeds: Must be adjustable with switch and by the drive belt. Switch setting 1: 80 / 330 / 1400 rev/min Switch setting 2: 160 / 660 / 2800 rev/min Motor rating: Input 850W to 880W, Output 540W to 560W Motor type: Induction motor, Single phase 230 V Size: Not more than (L x D x H) 915 x 407 x 305 mm Weight (complete): Less than 60 kg

1.2. Drives of the tool axes

Spindle drive Z axis: Stepping motor 1.8A, holding torque 50Ncm Traverse path: 290 - 310mm

Spindle drive X axis: Stepping motor 1.8 A, holding torque 50Ncm Traverse path: 65 - 75mm

Activation of stepping motors: Through CNC control unit (Must be included in scope of supply)

Power supply: Mains unit, output 35V (Must be included in scope of supply) INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

1.3. Software and stepping motor controllers Brief description of software and hardware: The software is harmonized with mechanics, motors and the control unit of the CNC machine, thus to offer the optimum performance.

The CNC control unit controls the step motors of the machine. The PC software provides the machine with the geometry information for travel of the tools (via RS 232 interface). This means that the control unit is the interface between software and the mechanics of the machine.

Two freely usable output relays in the casing of the control unit provide facilities for control of additional functions, e.g. a working lamp. Including connection cables with suitable plugs and built-in power supply for connection to 220 - 240V.

Simple creation of work piece geometry The CAD window is displayed when the programme starts. The work piece contour is created in the familiar WINDOWS® environment.

Numerous auxiliary aids help during programme operation, which supports both coordinate entry (absolute and relative) in addition to mouse use.

Technology information is to be allocated to every drawing element. This makes, for example, different processing speeds and manual tool replacement possible.

Read-in of existing files in .dxf or equivalent format is possible as well.

Automatic generation of CAM data The finished drawing of the tool is converted, by a mouse click, into the instruction set for the machine. So, machining can be started immediately. The instruction set generated in this way is in accordance with DIN/ISO 66025 or equivalent and can be manually edited and exported. Conversely, the system also permits importing or complete self writing of data sets.

CNC simulation If requested, the travel distances of the tool are to be simulated in the graphic window. In this way, faults in the programming can be recognised in time. Manual work Handwheels are replaced with the step motors of the CNC machine. Nevertheless, manual machining should be possible with the help of cursor buttons, since the step motors can be operated manually.

Software: latest software of the system Suitable for Windows 7 or higher

Minimum requirements- PC or Laptop: Pentium processor with 400 MHz frequency (or comparable), high-quality graphic card (64 MB RAM) and at least 40 MB free hard disc storage. Power supply: 230V +-5% Power consumption: min 150W

Gate Serial interface - Connection cable to PC to be included with machine supply INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Stepping motor controller Current control, pulse width modulation

Current reduction during standstill, clocking independent of PC, microstepping 1.5. General Specs

Ambient conditions: 5 - 40°C (Class 3K3), max.60% relative humidity 1.6. Scope of delivery (for one CNC lathe)

1 Qty. Lathe with attached stepping motors 1 Qty. CNC control unit MCS 1 Qty. CD with program software (including electronic manual) 1 Qty. Mains cable for CNC control unit MCS 1 Qty. Connecting cable for computer / CNC control unit MCS 1 Qty. Three-jaw chuck (Ø 100mm) 1 Qty. Travelling lathe centre 1 Qty. Ring gear drill chuck (clamped up to 10mm) 1 Qty. Operating tool 1 Qty. Multiple tool holder with 2 tool holder elements 1 Qty. Three-jaw chuck (Ø 100mm) 1 Qty. Lathe chuck guard Total 6 such system to be provided

1.1. Milling machine: Quantity 6 Nos.

Drive Type: Direct drive (Accuracy Min 0.05mm) with variable speed pre-selection., with 4 digit speed display. Motor Type: Brushless Motor Voltage: 220 - 240 Volt, 50/60 Hz, Single Phase Capacity: 390 - 410 Watt Variably controllable Motor Speed: Not beyond from between 100rpm to 4000rpm Basic dimensions: H Max. 760mm, W Max. 560mm, D Max.560mm Quill feed: 28-32 mm Cross table: solid cross table with 3 continuous T-slots for size 8 standard bricks Slot clearance: 44 - 47 mm Table size: L 390 - 410mm x W 120 -130mm Tool holder: From 6 to12 mm collet chucks Milling head: Must be pivot-able to the left and right by 90° (with degree graduation). Extension: 120 - 130 mm Column: Max. 130x110x450mm INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Noise generation: Max. 75 dB(A) Vibrations: Max. 2.8 m/s² Weight: Max. 50 kg

1.2. Drives of the tool axes

Spindle drive X axis: Stepping motor 2.2 A, holding torque 1.27 Nm traverse path: 280-300 mm Spindle drive Y axis: Stepping motor 2.2 A, holding torque 1.27 Nm traverse path: 90-110 mm Spindle drive Z axis: Stepping motor 2.2 A, holding torque 1.27 Nm traverse path: 190 - 210mm

1.3. Software and stepping motor controllers

Brief description of software and hardware: The software is harmonized with mechanics, motors and the control unit of the CNC machine, thus to offer the optimum performance.

Simple creation of work piece geometry The CAD window is displayed when the programme starts.The work piece contour is created in the familiar WINDOWS® environment.

Numerous auxiliary aids help during programme operation, which supports both coordinate entry (absolute and relative) in addition to mouse use.

Technology information is to be allocated to every drawing element. This makes, for example, different processing speeds and manual tool replacement possible.

Read-in of existing files in .dxf or equivalent format is possible as well.

CNC simulation If requested, the travel distances of the tool are to be simulated in the graphic window. In this way, faults in the programming can be recognised in time. Manual work INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Handwheels are replaced with the step motors of the CNC machine. Nevertheless, manual machining should be possible with the help of cursor buttons, since the step motors can be operated manually.

Software: latest software of the system Suitable for Windows 7/ or higher

Minimum requirements- PC or Laptop: Pentium processor with 400 MHz frequency (or comparable), high-quality graphic card (64 MB RAM) and at least 40 MB free hard disc storage.

Power supply Input: 230 Volt +-5% Mains unit: output 35 V Power consumption: min 150 Watt Stepping motor controller: Through CNC control unit current control, pulse width modulation

Gate Serial interface - Connection cable to PC included Current reduction during standstill, clocking independent of PC, microstepping

1.4. General data Ambient conditions: 5 - 40°C (Class 3K3), max.60% relative humidity

6. Scope of delivery ( for 1 cnc milling) 1 Qty. Milling cutter with attached stepping motors 1 Qty. CNC control unit MCS 1 Qty. CD with program software (including electronic manual) 1 Qty. Mains cable for CNC control unit MCS 1 set of connecting cables for computer / CNC control unit MCS 1 set of operating tools 1 set of commissioning manual and safety regulations 1 set of collet chucks Ø 6, 8, 10 and 12 mm incl. swivel nut

Total 6 such system to be provided

C) Bench Drill: Quantity 6 Nos.

Throat 135 - 145mm Work table L 190 - 210mm x W 190 - 210mm Table surface to chuck distance 225 - 235mm Tool holder Up-to 10mm Usable surface Minimum- 200x200mm Stroke 60 - 65mm INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Height adjustment 65 - 70mm Power supply 230V, Single Phase Motor rating 290 - 310W Speed between 1000rev/min to 4500 rev/min Noise level Less than 75dBA Machine weight Max 15kg column Dia Max. 50mm height Max. 510mm All necessary tolling and accessories Table and arm of the table drilling machine should be made of die-cast aluminium or better material.

D) Bench Grinder: Quantity 6 Nos.

Discs Ø 50x13x12.7mm ( Two discs can be operated simultaneously) size Max 255x135x105mm Weight Max 1.3kg Grinding speed Minimum 9m/s to max 25m/s Noise level Max 75 dBA Vibration Not more than 2.5m/s2 Power supply 230V single phase Motor rating 90 - 110W speed Min 2500rpm, max 9500 rpm Protection Class Not less than class II Polishing Set Steel wire brush, brass wire brush, cotton wheel Grinding set Corundum (grade N) with suitable bore Silicon carbide grade with suitable bore

E) Mitre saw: Quantity 2 Nos.

Machine base Max 240 x240mm Machine base height Max 55mm Height Max 220mm Widht Max 305mm Jaw length of vice Max 85mm Span width Max 50mm Weight Max 10kg Power supply 230v single phase Motor rating 190 - 210W No-load speed 5200 - 6000 rpm Table Round table, rotatable 45 degree left and right, INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

with stops at every 15 degree. Cutting discs (appropriate disc for the machine) Corundum-bound and Shatter-proof (for cutting steel, stainless steel and nonferrous materials)

Tungsten tipped Circular saw ( for cutting balsa, plywood, soft wood and glass reinforced plastic, polycarbonate, aluminium

F) Welding table with fume extractor: Quantity 2 Nos.

Fan Performance Maximum 3500 m’3/h Extraction Capacity Minimum 1200 m’3/h Motor Power Maximum 2 Kw Power Supply Suitable for the system Noise Level Maximum 80 dBA Filter Efficiency 99.9%

Weight Maximum 160 Kg Dimension Maximum 1500 * 1000 * 1500 mm

Protection Motor overload protection No of Filters stages 2 Welding table dimension Maximum 1500 x 1000 mm

G) Portable Gas welding and cutting machine: Quantity 2 Nos

Working / Power gas Oxy-Acetylene Type of Transportation Portable Steel Thickness for Welding Up-to 25 mm or more

Steel Thickness for cutting Up-to 30 mm or more

Overall Dimensions Minimum 300x150x500 mm Weight Maximum 40 kg Capacity of Oxygen Bottle Minimum 5 litre INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Capacity of Acetylene Bottle Minimum 5 litre

H) AC Portable Arc Welding Machine: Quantity 2 Nos.

Brief Description 1.Stepless adjustable current. 2.Portable&fan-cool structure. 3.Light Duty Jobs Arc Current 130-250A Current Range 50-250A Usable Electrode 1.6-5mm Max. Welding Thickness Usable Electrode:1.6-5mm Rated Input Voltage Single Phase,230V Type Iron, Steel Cooling Method Air Cooling Type Arc Welding Machines Weight Less than 25 kg Type AC Rated Duty Cycle 10% Accessories With standard spare parts: Electrode holder; Grounding Clamp, Brush and Mask, I) Single Spindle CNC Wood Routing Machine: Quantity 2 Nos.

Working Table Size 300x300mm Working Speed 4200mm/min. Interface: USB Port/RS232. Working Accuracy 4-8 mil Min Drill 0.4mm. Max Drill 3 mm Operating System Windows7 & above. INDIAN INSTITUTE OF TECHNOLOGY BOMBAY Materials Management Division For IIT Dharwad

Computer Appropriate computer for operation Repeatable accuracy 0.025mm Drilling Tolerance 0.015mm. Spindle Power. 800 Watts Motor Appropriate motor for operation Accessories: DSP Control system Drilling and milling Tools Tooling for the system