TOOL DESIGN

Tool design is the backbone of product development. A good, finished product is the combination of perfect design, correct material chemistry, accurate tooling, and the shortest process flow. Sigma’s design lab is equipped to reverse engineer and design exact OEM parts using the technology, tools & techniques such as:

  • 3-D scanning

  • CAD/CAM softwares to accurately machine the tooling.

  • Testing of non-dimensional attributes of samples for a better understanding of the materials involved and the functional parameters of the products.

  • 11238 different Tools & Dies.

TOOL MANUFACTURING

Manned by highly experienced tool makers and having the capacity to develop over 250 parts every year. The self-sufficient tool room is equipped with a complete range of specialty machines like :

  • VMC Machines

  • CNC Wire Cutting Machines

  • CNC Milling Machine

  • Pantograph Machines

  • Drilling Machines

  • CNC Machining Centers

  • CNC Lathe Machines

  • Electronic Spark Erosion Machines (EDP)

  • Centerless, Cylindrical 6 Surface Grinders

MACHINE SHOP

Sigma’s Machine Shop is equipped with latest & technologically advanced machines:

  • Digitally Controlled, CNC and 3 Quadrant Measuring Machine

  • Robotic SPN For Critical Operations

  • Lathe Machines - Manual, Semi-Automatic, Turret

  • Boring Machines

  • Broaching Machines

  • Induction Hardening Furnaces

  • Shaping & Planning Machines

  • Milling Machines

  • Grinders - Centreless, Cylindrical, Surface

  • Welding Machines— MIG, ARC & SPOT

SHEET METAL PRESS SHOP

Salient features of Sigma’s well equipped Press Shop:

  • 120+ mechanical and hydraulic sheet metal presses

  • Capacity to process upto 1000 tons of steel each month

  • Deep drawing execution capacity upto 200 mm in depth

  • Equipped with computerised shearing machines

  • Mechanical power presses ranging from 60 - 350T and Double action hydraulic power presses of 150 -300T

  • Automotive grade fasteners as per DIN, JIS, SAE and BS are welded as per defined automotive standards to stampings to achieve the required torque strength

  • Robotic welding machines for critical high accuracy sheet metal components

RUBBER COMPOUND PROCESSING

  • Supervised by qualified rubber technologists using fully integrated laboratory.

  • 200 tons of tailor made rubber compounds processed each month as per customer and product requirement.

  • Tested to obtain desired pre-moulding, ageing, durability and physical curing characteristics, tensile strength, elongation, hardness, ageing and durability.

  • Correct grade polymers and chemicals are used to match intended use.

  • Scientifically inventoried mixes are kept in air conditioned, environment-controlled chambers.

  • The entire process is monitored batch wise.

  • Rubber produced is tested on equipments such as Rheometer, Mooney Viscometer, Dynamic & Static Testing Machines, Ultrasonic Testing and Hardness Testing equipments etc. to ensure meeting of customer and field requirements.

RUBBER MOULDING

Sigma has acquired the expertise in relevant moulding technologies for high performance engine rubber parts.

  • Largest infrastructure in Asia dedicated solely to aftermarket operations.

  • Producing nearly 800,000 general moulded rubber parts every month.

  • More than 115 sophisticated PLC controlled machines of German, Korean and Taiwanese origins for Injection Moulding, Compression & Transfer Moulding and Cold Runner technology.

METAL SURFACE TREATMENT

Sigma’s Treatment facility is fully equipped to handle the various Treatment needs by means of:

  • Automated phosphating plant with programmable transporter.

  • Automatic degreasing machines.

  • Shot & sand blasting machines for pre-moulding and final finish to the metal surface.

PAINT SHOP

Sigma’s Paint Shop is well equipped to take care of varied Product finishing needs as per customer requirement in following ways:

  • Ability to do various finishes including E-Coating and PU Coating.

  • Control over the range of coat thickness, in microns, to meet different salt spray standards.

  • Strict Process Control mechanism is built in the machine to control the required quality of paint surface finish.