Sample fixation and positioningFix the product or packaging to be tested on the clamping device of the testing machine according to standard requirements (such as surface drop, edge drop, corner drop, etc.), ensuring that the sample does not shift during lifting and ensuring the accuracy of the drop posture. Different types of testing machines have different clamping methods. For example, single arm drop testing machines often use fixtures to clamp the corners of the sample, while zero drop testing machines use lifting mechanisms to support the bottom of large samples.

Height adjustment and settingAccording to the testing standards or actual simulated drop scenarios (such as manual handling during transportation with a drop height of about 1-2 meters, and mobile phone drop height of about 1 meter in daily use), the sample is lifted to the preset height through the lifting system (electric or hydraulic drive) of the testing machine. The device will accurately control the lifting height through sensors or rulers, with an error generally not exceeding 2% or 10mm, to ensure consistency in testing conditions.

Free fall triggerWhen the sample reaches the predetermined height, the clamping/lifting mechanism of the testing machine will quickly release the sample in the set manner, allowing it to fall freely in the direction of gravity. The release method should ensure that the sample has no initial velocity and no additional external interference. Common release mechanisms include pneumatic gripper release, electromagnetic suction release, and rapid withdrawal of the pallet. Different mechanisms are suitable for different types of samples (such as pneumatic gripper for light samples and pallet withdrawal for heavy samples).

Impact collision and data collectionThe sample falls freely onto a predetermined impact table (usually made of steel plate, concrete, or wooden board, simulating different contact surfaces) and undergoes collision impact. Some high-end drop testing machines are equipped with force sensors, high-speed cameras, and other devices to collect real-time data on changes in force values and sample deformation processes at the moment of impact; The basic equipment determines the damage of the sample through visual observation or simple testing (such as power on testing, size measurement).

Test result evaluationBased on the appearance damage, structural deformation, and functional failure degree of the sample after falling, combined with the collected impact data, evaluate the drop resistance performance of the product or packaging, determine whether it meets relevant standards (such as GB/T 4857.5, ISO 2248) or the quality requirements of the enterprise, and provide a basis for product design optimization and packaging scheme improvement.