Precision Redefined: Exploring the Capabilities of 5-Axis Swiss Screw Machining

Multi-Spindle Swiss Screw Machining is one of the most reliable and precise methods for manufacturing small, intricate, and high-volume components.
Originally developed for producing screws, this process has evolved to support multiple industries, including the automotive and industrial equipment sectors.

It is a traditional machining method used for decades to produce high-precision parts.
The process involves a screw machine — a multi-spindle automatic lathe — that produces parts using precision cutting tools.

Bombay Metrics has advanced machining capacities, featuring 5-Axis and Multi-Spindle machines such as Tsugami and Citizen systems.
These machines are ideal for producing high volumes of small, simple parts that demand close tolerances.
The process is both fast and efficient, making it a highly cost-effective solution for large-scale production runs.

Simplified Working of 5-Axis Screw Machining

• Bar Stock Loading: The machine loads bar stock and clamps it on the rotary slide. The slide rotates the bar on one or more axes during the tooling process.
• Tooling: The workpiece moves along the rotary axis while tools such as drills, taps, and threaders operate simultaneously on multiple spindles. These tools mold the stock through thread grinding, rolling, milling, and deburring, ensuring exceptional precision and repeatability.
• Secondary Finishing: Depending on the application, secondary processes like coating, plating, lapping, and heat treatment are applied to enhance performance and longevity.

 

Right Process for Right Parts

Machine Type	Precision	Volume	Application
Single-Spindle	High precision	Low to medium	Precision fasteners, connectors, and specialized fittings
Multi-Spindle	High precision and repeatability	High	Low-complexity, high-volume precision components
Swiss Screw	Extremely high precision	Low to medium	Small, intricate parts requiring extreme precision
CNC Screw	High precision	Medium to high (complex components)	Flexible machining for both simple and complex parts

 

Technical Advantages of Screw Machining Processes

• Precision without the Guesswork: Screw machining enables production within extremely tight tolerances and high repeatability, ensuring reliability for critical industries.
• Handles Complex Geometries: The process allows for intricate shapes and complex designs without complicated setups, thanks to CNC-driven automation.
• High-Volume Efficiency: Systems are designed to monitor equipment and automatically replace worn tools, ensuring continuous operation and maximum uptime.
• Cost-Effective Consistency: Perfect for scaling operations, screw machining delivers consistent, high-quality parts in large batches with lower per-part costs.

 

Bombay Metrics Core Capabilities in Screw Machining

• Precision Engineering and Technology: Utilizing Swiss-type CNC screw machines and multi-axis machining centers, we produce screws, bolts, fasteners, and custom threaded components with tolerances as tight as ±0.001 inches.
• Full-Range Machining for Custom Solutions: We support all major screw geometries — metric, imperial, specialty heads, and micro-parts — across materials such as stainless steel, aluminum, brass, copper, and alloys.
• Engineering, Design, and Inspection: Our experts convert 2D drawings into optimized CAD or solid models, enhancing performance, manufacturability, and cost-effectiveness.
• End-to-End Manufacturing Integration: Fully integrated global operations allow flexible production volumes, reliable sourcing, and just-in-time delivery for clients worldwide.

 

Innovation and Future-Ready at Bombay Metrics

• Future-Ready Manufacturing: We embrace Industry 4.0 principles by integrating intelligent systems, data-driven monitoring, and predictive maintenance to enhance productivity and minimize downtime.
• Customization and Flexibility: Our customer-centric approach delivers scalable solutions tailored to diverse industry requirements.
• Sustainable Practices: By reducing waste, optimizing material usage, and implementing energy-efficient technologies, we align with sustainability goals while delivering high-value results.

 

“At Bombay Metrics, we go beyond traditional machining by combining advanced equipment, skilled expertise, and global quality practices.
With our focus on innovation, sustainable manufacturing, and customer-specific solutions, we deliver screw-machined components that meet the highest standards of performance.
Whatever the sector and the scale, Bombay Metrics stands as a trusted partner for reliable, world-class precision parts.”

Forging the Future: Exploring Aluminium Forging Capabilities at Bombay Metrics

Aluminium Forging is a metalworking process that shapes aluminium alloys using compressive forces.
This process enhances the material’s properties by refining its internal grain structure, eliminating porosity, and aligning the grain flow with the part’s contour.
The result is a component with significantly improved mechanical properties compared to cast or machined parts,
particularly in terms of strength, toughness, and fatigue resistance.
Bombay Metrics is witnessing growing demand from the automotive and aerospace sectors for high-strength, lightweight components,
driven by the shift towards electric vehicles and fuel efficiency.

Advantages of Aluminium Forging

• Surface Quality: Forging can produce a variety of surface finishes, including smooth surfaces and sharper serrations, making it versatile for different applications.
• Dimensional Control: Forged parts can have tighter dimensional tolerances, especially for parts that have undergone subsequent machining.
• Lightweight with Strength: Provides high mechanical strength while reducing overall weight.
• Superior Grain Structure: Forging refines the grain flow for improved toughness, mechanical properties, and fatigue resistance.
• Cost-Effective: Near-net shapes reduce machining and material wastage.
• Versatility: Capable of producing both simple and highly complex geometries.

 

Powering the Future of Electric Mobility – Partnering with Bombay Metrics

• Today, aluminium’s role extends far beyond traditional fuel-powered vehicles — it is rapidly transforming the landscape of electric mobility.
• In EVs, where weight directly impacts driving range and efficiency, manufacturers are turning to materials that offer high strength without added mass.
  Aluminium fits this need perfectly, making it the material of choice for leading EV makers around the world.
• At Bombay Metrics, we play a crucial role in this transformation by delivering high-precision forged aluminium components tailored for the evolving needs of the electric vehicle industry.
• Our advanced manufacturing capabilities, combined with strict quality control and innovative engineering, enable us to support global OEMs and Tier-1 suppliers in achieving lighter, stronger, and more efficient vehicle designs.
• Aluminium’s growing prominence in the automotive industry reflects a strategic response to changing consumer expectations, environmental goals, and the worldwide shift toward sustainable mobility.
• With the electric vehicle market continuing to expand, Bombay Metrics remains committed to driving this evolution, reinforcing aluminium’s position as a key enabler of innovation and efficiency in modern automotive manufacturing.

 

Solutions from Bombay Metrics for Aluminium Forging

• Technical Expertise: Proven capabilities in multiple forging processes tailored to client requirements.
• Global Standards: Commitment to international quality certifications and testing protocols.
• End-to-End Solutions: From design and prototyping to large-scale production, we provide comprehensive support.
• Sustainability Focus: Aluminium forging processes designed to minimize waste and maximize efficiency.
• Industry Experience: Trusted partner for automotive, aerospace, defense, marine, and industrial sectors.
• Product Range: We have the capacity of supplying aluminium forgings from a few grams up to 15.0 kg.
• Alloy Range: 5 Series, 6 Series, and 7 Series alloy forgings can be produced through the hot forge route.

 

Bombay Metrics delivers high-performance, precision-engineered aluminium forged components.
Our deep expertise and state-of-the-art facility allow us to specialize in advanced forging processes,
creating parts that meet the rigorous demands of automotive and industrial applications.

Our commitment to quality, innovation, and client collaboration ensures the transformation of raw aluminium into components
with superior mechanical properties and a perfect finish.

Core Competency at Bombay Metrics

• Comprehensive Forging Techniques: We offer a full spectrum of aluminium forging processes—hot, warm, and cold forging—tailored to meet the unique needs of each project, from structural components to intricate custom parts.
• Expert Die Engineering: Our in-house team designs and produces precision dies using advanced simulation tools, enabling optimal material flow, superior surface finish, and minimal post-processing.
• Material Mastery: Expertise in selecting the right aluminium alloys ensures components with high strength, corrosion resistance, and lightweight benefits, enhancing product durability and safety.
• Quality Assurance: Robust quality control protocols, “ISO 9001” certification, multi-stage inspections, and rigorous testing guarantee that every forged part meets or exceeds customer specifications.
• Integrated Finishing Solutions: Machining, milling, and value-added finishing operations are seamlessly integrated, ensuring parts are ready for assembly or installation, with perfect tolerances and surface integrity.

 

“At Bombay Metrics, we provide end-to-end solutions, from design to production for effective transformation — mitigating the aligned risks that meet global standards while focusing on sustainability and efficiency.
This positions us as a trusted partner for industries seeking innovative forging capabilities to drive performance and growth.
By blending advanced technology, skillset, and a customer-centric approach, we stand out as a trusted partner for aluminium forging, offering reliability and innovation at every step.”

We Made Our SQE Life Easy

• A Supply Quality Engineer (SQE) ensures that a company’s external suppliers provide high-quality, defect-free materials and components that meet all standards and regulations.
• Their responsibilities include performing audits such as supplier audit, process audit, product audit, and dock audit; creating quality control plans; fostering strong supplier relationships; and facilitating continuous improvement of the supply chain by preventing quality issues.
• At Bombay Metrics, we serve as a strategic bridge between suppliers and customers, ensuring seamless coordination and uncompromised quality at every stage.
• We are committed to delivering products and materials that consistently meet and exceed our customers’ quality expectations, strengthening trust and long-term partnerships.

Our Key Responsibilities

• Supplier Audits & Assessments: Evaluating supplier facilities, process capabilities, and quality systems to ensure compliance with global benchmarks.
• Process Validation: Working with suppliers to validate manufacturing methods, eliminating risks of defects during manufacturing to ensure zero defects and on-time delivery.
• Root Cause Analysis: Identifying and eliminating the root cause of detected non-conformance using the Fishbone Diagram and 5 Whys Process.
• Continuous Improvement: Guiding suppliers to improve processes and quality using the “KAIZEN” method. We perform Statistical Process Control (SPC) to increase process capability, ensuring zero-defect products every time.
• Customer Assurance: Acting as a single point of accountability to guarantee that delivered goods meet specifications every time.
• Corrective and Preventive Action (CAPA): Investigating quality issues and implementing corrective actions to prevent rework or rejection using the 8D Methodology.
• Cost Efficiency: By implementing stringent quality checks and proactive supplier audits, we minimize the Cost of Poor Quality (COPQ), preventing rework, rejections, delays, and customer dissatisfaction.
• To strengthen this, we leverage our “Q-APP” within our suppliers through this digital quality management platform accessible via smartphones.

Q-APP – Our Digital Quality Management Platform

• At Bombay Metrics, we have developed the Q-APP, a powerful digital tool designed to streamline supplier collaboration and quality management.
• This app is shared with our suppliers and integrates critical steps such as inspection audits, production process tracking, and APQP/PPAP status monitoring.
• One of its most impactful features is the automatic issue escalation system—whenever the quality team identifies a concern, the app instantly circulates an email to relevant stakeholders.
• This ensures real-time communication, faster response times, and reduced delays, leading to seamless collaboration, improved product reliability, and significant time savings across the supply chain.

Results Driven by the Q-APP at Bombay Metrics

• ✅ Streamlined Inspections – Digital audits for faster, more accurate supplier evaluations.
• ⏱️ Real-Time Production Tracking – Visibility into every stage of the process.
• 📊 Faster APQP/PPAP Compliance – Ensures standards are met without delays.
• 📧 Automatic Issue Escalation – Instant alerts reduce downtime and speed up resolutions.
• 🔗 Seamless Communication – Enhanced collaboration between suppliers and teams.
• 💰 Cost Efficiency – Lower rework, waste, and operational disruptions.
• 🛡️ Improved Reliability – Consistent product quality across the supply chain.

At Bombay Metrics

• Our Supplier Quality Engineers ensure flawless quality, efficient processes, and seamless collaboration.
• By leveraging tools like Q-APP and a proactive approach to audits, validations, and continuous improvement, we help businesses achieve reliability, cost efficiency, and customer satisfaction across the global supply chain.