Machined profiles for storage flow racks and conveyor frames

The customer was building storage flow racks and conveyor frames for an automated logistics application. Guantian supplied European-style T-slot upright profiles, flow-rack guide profiles and crossbeam connectors. Components were delivered after the agreed precision cutting, punching, drilling, tapping and anodizing operations, ready for the customer's assembly.

The profiles needed to fit directly with linear-bearing sliders, roller tracks and T-bolts at the customer's workshop. Long guide spans required careful control of overall straightness, flatness and open-slot width. Each upright also had multiple connection holes and end threads: accumulated hole-position errors could prevent the rack components from aligning during on-site assembly.

6061-T6 was selected for the project's load-bearing requirements. The die drawings specified the higher precision grade for critical guide-channel dimensions. Guantian completed extrusion, in-line quenching and mechanical stretch straightening in-house to control residual stress and twist, followed by cut-to-length sawing and punching at the specified mounting locations. An established CNC partner used dedicated fixtures for end tapping and precision countersunk locating holes. A finishing partner then applied the sandblasted, silver-colored anodized finish.

Before die manufacture, the engineering team checked profile interfaces against the roller sliders and T-nuts supplied by the customer. Once the first machined samples were ready, custom GO/NO-GO gauges and the customer's sliders were used to check the full guide length. A frame with intersecting members was trial-assembled in the factory to verify hole alignment. A video of these checks accompanied the samples sent for customer approval. The trial assembly was used to verify the fit of the supplied parts.

Production batches were inspected and accepted against the approved machining drawings and first-piece samples. Project checks included sampled Webster hardness readings of at least 15 HW, cut-length variation within ±0.5 mm, batch checks for smooth slider movement, thread GO/NO-GO gauging and anodic film thickness of at least 10 µm. Aluminum chips were removed from the machined parts before they were separated with protective foam and packed. Individual part-number labels matched the customer's bill of materials, allowing the customer to identify the parts for assembly on its production line.

Send profile cross-section drawings, machining drawings with hole and thread datums, relevant assembly drawings and a bill of materials. Provide specifications or samples for sliders, roller tracks and connectors, along with span, load and operating-environment requirements. Confirm the finish, quantities, part numbering and packaging plan so we can review the parts against the intended assembly.