Parts Assembly

Parts Assembly is the process of combining individual, finished components into a complete mechanism, module, or final product, according to design drawings and functional requirements. This is the final step in the manufacturing process and directly impacts the product's functional stability, lifespan, and final presentation.

From material selection, processing, and surface treatment to final assembly and packaging, assembly is a crucial step in the overall process, serving the following functions:

• Verifying the quality of previous manufacturing stages.
• Enabling functional integration and testing.
• Ensuring consistent appearance and feel.
• Increasing product added value and market acceptance.

This involves the use of standard parts like screws, nuts, fasteners, and springs. It is widely applied in detachable structures and modular equipment.

Advantages: Easy to repair and replace.
Disadvantages: Requires space for components, and structural strength depends on thread accuracy.

This method uses pressure to force parts into corresponding holes or slots, commonly found in bearings, connectors, and terminals.

Advantages: Space-saving and fast assembly.
Disadvantages: Requires high-precision hole diameter and dimensional control.

This method uses gas welding, spot welding, or laser welding to permanently join parts, suitable for high-strength or conductive structures.

Advantages: Strong, permanent joints and excellent conductivity.
Disadvantages: Irreversible, with a risk of heat-induced deformation.

This method uses industrial adhesives to connect different materials or thin-walled structures, suitable for delicate products like electronics, eyewear, and medical devices.

Advantages: Lightweight and no heat-induced deformation.
Disadvantages: Requires precise adhesive selection, and durability can be limited.

In some structures, a part is first guided by threads and then pressed into place. HIROKI often applies this method for installing internal components into a metal casing.

HIROKI has a dedicated assembly area equipped with specialized jigs, static electricity protection devices, and work instructions to ensure a standardized working environment.

• Parts Receiving Inspection: Verifying dimensions, quantity, and quality.
• Assembly Method Configuration: Selecting the appropriate method based on the design drawing specifications.
• Workstation Diversion Design: Segmenting the process by product structure to improve takt time efficiency.
• Functional Testing and Visual Inspection: Preventing missed installations and functional abnormalities.
• Protective Packaging and Shipping Management: Ensuring every product is delivered safely.

HIROKI can assist clients with initial module design and optimization, such as:

• Pre-assembly of power tool front casings and internal motor structures.
• Modularization of medical device drive systems.
• Synchronous assembly of mechanical brackets and linkages.

• We use calipers, depth gauges, concentricity testers, and torque testers.
• Each station has a sampling plan, and we implement AQL (Acceptable Quality Level) inspections based on different client needs.

• We create detailed assembly SOPs with visual and step-by-step instructions for each process.
• For press-fit or adhesive parts, we use automated jigs for pressing and precise glue dispensing to avoid human error.

• Barcode scanning to confirm part lot numbers and quantities.
• Assembly jigs are equipped with position-limiting and anti-mismatch features to prevent parts from being installed incorrectly.
• Any discovered abnormalities are immediately reported to the technical and manufacturing departments for joint correction.

Assembly includes brackets, sheet metal, fasteners, and anti-vibration components. HIROKI uses jigs to secure multiple positions simultaneously, improving assembly efficiency.

Items like bike lights, bells, and brake handles are often integrated mechanical and electronic components. HIROKI provides integrated services for module assembly, functional testing, and small-batch packaging.

This involves assembling internal motors, wires, and gear modules into an injected casing, followed by additional processes like screw sealing and labeling. HIROKI can complete this in one stop.

Products like headphones and cable modules require welding, plug-in connections, adhesive bonding, and the fastening of tiny screws. HIROKI provides cleanroom work areas and static electricity protection.

Whether it's a multi-part structure or a simple assembly, we can customize the process flow and jig design based on client requirements.

By integrating our stamping and post-processing in-house, we eliminate the time and risk of outsourcing to external factories, improving overall delivery efficiency by over 20%.

We log every step of the process, from part origin and processing time to the assembly technician, allowing for full quality traceability and subsequent verification.

Clients only need to provide their designs and specifications. HIROKI can handle everything from material sourcing and stamping to surface finishing and assembly, significantly reducing communication costs and process risks.