Drilling in Office Chair Factories

The drilling process in office chair factories is enhancing efficiency and precision through intelligent upgrades and optimization of traditional techniques, which can be divided into the following directions:

I. Application of Intelligent Drilling Equipment

Fully automated drilling robots have replaced manual labor for drilling standardized panels. For example, Zhejiang Runda Kehong Furniture Co., Ltd. has adopted robots in its woodworking workshop, increasing production capacity from over 300 pieces per day in the manual era to over 2,000 pieces per day. The number of workers has been reduced from 3 to 1, and hole position accuracy has improved from over 1 millimeter to about 0.5 millimeters. These devices achieve full-process automation through preset parameters, significantly reducing labor costs and enhancing production stability.

For complex curved surfaces such as chair backs, high-end CNC machining equipment (such as five-axis linkage or high-precision three-axis machining centers) has become a core tool. Relying on CAM software to plan machining paths, combined with micron-level positioning accuracy (0.02-0.03mm) and high-speed spindles (0-24,000rpm), these machines can stably process wood, composite materials, and even soft metals. For instance, chair back trimming and drilling machines ensure hole position accuracy and surface finish through integrated operations, meeting the detailed requirements of high-end products.

II. Optimization Points for Traditional Techniques

In scenarios where full automation has not been achieved, traditional drilling techniques still require strict adherence to operating procedures:

1. Tool Adaptation: Select drill bit types based on material (e.g., cobalt steel drill bits for metal/wood, HSS drill bits for plastic) and match them with equipment power. Electric drills or hand drills are suitable for holes with diameters <10mm, while hammer drills are used for holes >10mm to avoid tool overload and hole position deviation.
2. Positioning Marking: Make cross marks on the chair surface and create small indentations to fix the drill bit, preventing slippage during drilling. This step is particularly important for irregular curved surfaces and can be enhanced with laser positioning or template assistance for greater accuracy.
3. Safe Operation: Wear protective equipment such as goggles and promptly clean debris to prevent interference with equipment operation. For large holes, first drill a pilot hole (with a diameter approximately one-third of the target hole) and then gradually enlarge it to the desired size to avoid drill bit breakage or material cracking.

III. Industrial Chain Collaboration to Enhance Overall Precision

Upgrading the drilling process requires coordination with upstream and downstream techniques. For example, Anji Jiacheng Hardware has integrated multiple processes into a new foot tube forming automatic line, achieving precision control within 0.2 millimeters, far exceeding the industry's 2-millimeter assembly requirements. This collaborative optimization ensures the assembly compatibility of drilled components, reducing rework rates caused by cumulative tolerances.