Knowledge Hub – Sankalp Tools and Components

Press Tool Design and Press Tools

Press Tool Designs Tailored for High-Volume Production

At the heart of efficient and continuous production for sheet metal components lies progressive tool design. With our extensive experience, we specialize in crafting advanced progressive tools for complex parts that demand precision dimensionally and functionally.

We offer innovative design solutions for sheet metal parts with challenging features, ensuring consistent dimensional stability every time.

Key Factors Considered in Designing High-End Progressive Tools:

Economic Strip Layout: We develop layouts that maximize strip usage and obtain your approval to ensure minimal waste. We also certify burr directions for clean finishes.
Tool-Proofed Die Inserts: Each stage of the progressive tool features die inserts that are proofed for easy replacement during breakage, minimizing downtime.
Replaceable Die Spacers: Cutting and non-cutting die inserts have replaceable spacers to simplify re-sharpening and extend tool life.
Precision Guidance System: Our die sets feature 4-6 main guides, while punch holders, strippers, and die plates include micro guides for razor-sharp alignment.
Strip and Lifter Guides: We provide strip guides and lifters to ensure smooth, trouble-free automatic operation.
Strip Feeding Assurance: Strip guide extensions guarantee correct feeding into the die for seamless processing.
Load Absorption Features: Back plates on punches and dies absorb thrust loads, protecting tool components.
Misfeed Protection: A misfeed pilot arrangement halts the press immediately if strip feeding goes wrong, enhancing safety and preventing damage.
Stripper Bottoming Buttons: These help transfer forming loads to the top half during forming processes for consistent shaping.
Die Rest Buttons: Designed to balance the stripper, these ensure the stripper only lightly contacts the strip without clamping it.
Damage Prevention: We provide die and punch reliefs to avoid any damage marks on formed areas.
Slug Management: Proper slug reliefs are incorporated to ensure free fall of slugs and finished components without interruption.
Customized Cam-Punch/Die Solutions: Side or top actuated cam punch/dies accommodate strip thickness variation and maintain form consistency during bending and forming stages.
Safety Sensors: We integrate all necessary sensors based on your specific requirements for safe operation.

With these carefully engineered design features, our progressive tools run smoothly, delivering consistent results and trouble-free production.

Press Tools Designed for Reliable, Continuous Production

Our progressive and single-stage tools are crafted to support continuous production runs while maintaining precise dimensional stability. Built with user-friendliness in mind, these tools offer easy interchangeability and foolproof operation to minimize errors on the shop floor.

Constructed from high-grade steels and hardened for durability, our tools are engineered to provide a long service life. Every tool is designed and manufactured to meet international quality standards, ensuring top performance and reliability.

Rapid Prototyping Process

What Is Rapid Prototyping?

Rapid prototyping is a fast and early step in product development where design teams quickly create initial models to test ideas and gather user feedback. These early models, often called minimum viable products (MVPs), focus on essential features to speed up the process. Technologies like 3D printing and CNC machining are commonly used to make multiple design iterations quickly and efficiently.

Advantages of Rapid Prototyping

Cost-Effective: Unlike traditional methods requiring expensive steel molds, rapid prototyping uses cheaper options like aluminum molds, 3D printing, or CNC machining to keep costs low.
Better Collaboration: Digital models called “digital twins” allow teams and stakeholders to spot potential manufacturing issues early and give feedback before production.
Faster Development: Quick manufacturing methods help you test designs rapidly, speeding up product launch.
Customization: It allows fast adjustments to design, enabling you to offer variations in color, material, or function easily.
Improved Validation: Early testing finds design flaws before full production, reducing costly fixes later.

Tips to Cut Prototyping Costs

Use digital manufacturers for faster turnaround and helpful design feedback.
Choose less expensive materials for prototypes when possible.
Skip surface finishes that are unnecessary at this stage.
Focus on the core features needed to evaluate your design effectively.

Common Prototyping Methods at a Glance

Process	Description	Materials	Notes
SLA (Stereolithography)	Laser-cured resin layers	Photopolymers	Great surface finish, limited strength
SLS (Selective Laser Sintering)	Laser-sintered powders	Nylon, TPU	Good for functional plastic parts
DMLS (Direct Metal Laser Sintering)	Laser-sintered metals	Stainless steel, titanium, aluminum	Strong metal parts, fine detail
FDM (Fused Deposition Modeling)	Extruded plastic layers	ABS, PC, PC/ABS	Affordable, easy to use
CNC Machining	Subtractive machining of solid blocks	Metals and engineering plastics	Strong parts, great finish
Injection Molding	Thermoplastic resin injected into molds	Wide range of plastics and rubbers	Ideal for high-volume production
Sheet Metal Fabrication	Press brake forming and cutting	Aluminum, steel, copper, brass	Fast for metal parts, limited shapes

Choosing the Right Process

Your choice depends on what you want to test—fit, form, function, or final appearance—and your timeframe and budget. Rapid prototyping helps you get your ideas into physical form quickly so you can test and improve confidently before full-scale production.

Plastic Injection Moulds

Plastic Injection Moulds for High-Volume Production

We design and manufacture a wide range of plastic moulds for automotive, electrical, and consumer components. Our moulds are built to deliver high-volume production with excellent dimensional stability and defect-free parts, tailored to your specifications.

Each mould is made precisely according to the approved design, considering critical details like mould size, gate type and location, ejector system, cooling lines, and component markings. We also perform detailed mould flow analysis to optimize gate placement, runner balance, filling uniformity, and to prevent issues like air traps, sink marks, weld lines, warpage, and cycle delays.

Using premium materials such as Stavax ESR, Eskylose, or Orvar Supreme steel (vacuum hardened for durability), we ensure long-lasting moulds. For larger parts, we use pre-hardened steel with strong durability. Mould housings come in C45 or P20 steel, and guiding components are sourced either from Misumi or locally, based on your needs.

Hot sprue and runner systems are selected from top brands like Mold Masters, Sinventive, or Thermoplay as per your requirements. Additionally, features like ejector retraction sensors, shot counters, and built-in water manifolds can be added on request.

Jigs and Fixtures

Choosing the Right Manufacturing Process for Jigs and Fixtures

Selecting the best method to manufacture jigs and fixtures depends on your specific needs, including cost, application, and material.

3D Printing is excellent for creating complex, custom, and lightweight jigs and fixtures. It allows fast design changes and rapid iterations, reducing lead times significantly. It offers good material options for ergonomic, low-to-medium strength applications. However, larger parts may require post-processing and can be prone to warping.

CNC Machining is better suited for sturdy, heavy-duty fixtures requiring high precision and durability. It delivers superior surface finishes and is ideal for large-volume runs. CNC is slower to set up and costlier for low-volume or highly customized work, but provides robust and accurate outputs.

When to Use Each Method

Use 3D printing for quick prototyping, complex shapes, lightweight designs, and small batch customized tooling.
Use CNC machining for large, strong fixtures, precise tolerance work, and long-term production stability.

Types of Jigs & Fixtures

Jigs:

Drill Jig: Guides drills for precise hole patterns in volume production.
Template Jig: Fixed guide for replicating identical hole patterns on large parts.
Plate Jig: Enhanced template jig with drill bushes for accuracy.
Indexing Jig: Rotates workpieces for evenly spaced holes.
Channel Jig: Holds workpieces securely for drilling, tapping, and milling.

Fixtures:

Vice Fixture: Clamps workpieces tightly for machining and assembly.
Milling Fixture: Holds parts precisely during milling processes.
Angle-plate Fixture: Supports workpieces at fixed angles for machining or welding.
Welding Fixture: Positions and secures components during welding.
Inspection Fixture: Holds parts steadily for quality checks.

Key Design Considerations

Workpiece Location & Clamping: Use the 3-2-1 principle to constrain movement and apply just enough clamping force to avoid deformation or slippage.
Material Selection: Choose tool steel for heavy-duty use, aluminium for ergonomic lightness, or hybrid solutions combining 3D printed parts with steel inserts.
Modularity: Design fixtures that can be reconfigured quickly to handle different parts, saving time and increasing adaptability.
Ergonomics: Reduce weight and optimize access for safer, more efficient handling.
Precision & Tolerance: High precision parts require CNC-machined fixtures; looser tolerances can use simpler fabrication methods.

Fundamental Fixture Components

Body: The main structure providing support and rigidity.
Locating Devices: Pins and supports that position the workpiece accurately.
Clamping Mechanisms: Devices like toggle clamps, screw clamps, pneumatic clamps, and vises hold the workpiece in place securely.
Tool Guides and Bushes: Align tools precisely and protect jig components from wear.

Clamping Method Summary

Clamp Type	Advantages	Disadvantages	Applications
Toggle Clamp	Fast and secure	Limited force	Light machining
Screw Clamp	Strong force	Slower operation	Heavy-duty machining
Pneumatic Clamp	Automated and fast	Requires power source	High-volume production
Vise Clamp	Adjustable, high force	Bulky	Machining/welding
Magnetic Clamp	Ideal for smooth surfaces	Limited to ferrous materials	Light machining

This balanced summary should help you quickly understand the best choices for jig and fixture manufacturing tailored to your needs.

In-line Tool for Roll Forming Machines

In-Line Tools for Roll Forming Machines: Essential Components and Functions

An in-line tool for a roll forming machine is a coordinated set of components that work together seamlessly to process a metal strip as it moves through the production line. These tools perform critical operations such as forming, punching, notching, and cutting. Arranged in a series of stations known as roll stands, each tool incrementally shapes the metal strip into the desired profile.

Key in-line tools and their functions include:

Decoiler: This component holds and unwinds the coil of flat metal stock, ensuring smooth and continuous feeding into the machine without interruptions.
Feeder/Straightener: Before the metal strip enters the forming section, the feeder and straightener align it properly and remove bends or curls to guarantee a flat, straight strip for accurate forming.
Entry Guide: It centers the metal strip as it enters the roll stands, preventing misfeeds that could disrupt production or damage the material.
Roll Stands (Roller Stations): Serving as the core of the roll forming machine, these stations contain pairs of rollers (forming dies) that progressively bend and contour the metal strip with each pass, carefully shaping it into the final profile.
Punch/Cut-off Station: Positioned at the end of the line, this station cuts the formed metal strips to the required length. It may also include punching or notching operations to add additional features before the final cut.
PLC/CNC Control System: This digital control manages the timing and coordination of all in-line tools, enabling automated, precise, and consistent production. It ensures each process happens in the correct sequence and to exact specifications.

Additional in-line operations often integrated into roll forming lines for versatility include:

Pre-punching: Adding holes or features to the flat metal strip before it enters the roll forming process.
Mid-line Punching: Stations placed between roll stands to add holes or cutouts on partially formed profiles.
Post-punching: Punching or notching done after the roll forming but prior to final cutting.
In-line Welding: Some lines include welding stations to join the ends of new coils to old ones, facilitating continuous production without stopping for material changes.

Together, these components and operations provide continuous, automated processing of metal strips into precise, high-quality profiles efficiently and with minimal manual oversight.

This integrated approach makes roll forming machines highly adaptable for various complex shapes and high-volume production needs, ensuring both speed and accuracy throughout the manufacturing process.

Prototype Seat Assembly

Prototype Seat Assembly: An Iterative Process for Design Validation

The prototype seat assembly is a carefully staged and repetitive process focused on validating the design and testing functionality before moving to full-scale production. The main steps include fabricating components, manual assembly, rigorous testing, and continuous refinement.

Component Fabrication:
Each part is crafted carefully according to detailed designs. The frame is made from lightweight metal alloys, cut, bent, stamped, and welded precisely to form the seat’s structure. Polyurethane foam is molded to fit specific contours for cushions and backrests. Trim covers made of fabric, leather, or other materials are sewn with precision, designed to fit and attach properly. Mechanisms like recliners, wiring for seat warmers, and airbag systems are also prepared for assembly.

Manual Assembly:
Unlike automated production lines, prototype assembly is hands-on. Foam cushions are securely fastened to the metal frame with clips, wires, or hooks. The trim covers are fitted over the foam and frame, smoothed out, and attached to maintain a clean look. All mechanisms and electronics are integrated carefully, including airbags, wiring harnesses, sensors, and adjustable components. Final assembly involves connecting major sections—such as the seat base, backrest, and headrest—to complete the seat.

Rigorous Testing:
Once assembled, the prototype undergoes various tests to verify its design and performance. Safety testing ensures the seat meets crash and durability standards. Functional checks verify all moving parts and electrical features work smoothly. Comfort is evaluated for ergonomic support and user experience. Additionally, noise and vibration tests identify and resolve any operational disturbances.

Refinement and Iteration:
Based on these tests and feedback, adjustments are made to both the design and assembly procedures. This iterative cycle continues until the prototype meets all performance, safety, and comfort goals. The insights gained are invaluable for streamlining and optimizing mass production, ensuring the final product is both cost-effective and high-quality.