Spot Check and Calibration of Test Equipment

Our company has plenty testing equipment and professional inspection team, strict requirements for product testing, and a rounded testing system.The testing tool will be calibrated periodically.Each year, all equipment include Japanese Mitoyo automatic CMM, Mitoyo tool microscope, automatic height gauge, height gauge, roughness tester, hardness tester, marble terrace, plug gauge, thread gauge, as well as some common detection tools, all need to be checked and calibrating regularly.

Company measurement instrument testing process and requirements for surveyors：

The company shall calibrate the inspection tools every 3-12 months.

The surveyors should check the tools and record details on the checklist every day before testing.

The temperature in the quality inspection room is constant tempreature, the temperature is controlled at 20 degrees(±2 degrees).

The workpiece should be put in the testing room at a constant temperature of more than 4 hours then for inspecting.

The surveyors must have certain professional knowledge and practical work experience, and they need to meet the requirements of the products inspection. The surveyors should take an annual test to assess their testing abilities.Examination subjects include, testing principle, testing check, testing operation, intermediate testing, advanced testing and etc.Surveyors regularly participate in professional knowledge training, learn and accept advanced testing methods to improve their professional level.

Cleaning the measuring equipment and check the testing equipment before testing.

The quality inspector must test the quality of the OEM machining parts strictly in accordance with the requirements specified in the drawings and technical documents.

In order to ensure that shipping 100% good machines machining parts to clients,we are strict with "First Article Inspection", "Inspection Tour", "Final Inspection'' ,integrating inspection workpiece with process control closely, controling the quality problems of each working procedure or possible quality problems strictly, eliminate bad products, make its can not be put into the next process or shipped out.

Company requirements: all dimensions of all products are required to be checked except the customer's permission.

Partial test Equipement Calibration

CMM Calibration and Testing Certificate

Height Gauges Calibration and Testing Certificate

Digital Micrometer Calibration and Testing Certificate

Digital Caliper Calibration and Testing Certificate

Thread Plug Gage Calibration and Testing Certificate

Test equipment daily checklist

The surveyors are required to do the spot checking of the tools and record it on the spot check list before the daily testing. The purpose of the spot check is to maintain the high stability of equipment performance and guarantee the high precision of the test equipment. The case of the daily spot check list is as following:

Three coordinate daily checklist tool microscope daily checklist

Tool microscope daily checklist

Hardness tester daily checklist

Surface roughness tester daily checklist

Drawing case after testing

During the production process, production operators need to test the production parts by themselves, then record the verified result into the corresponding column in the process card for confirmation,and signed and record their own processing time, then surveyors must be strictly in accordance with the requirements of the drawings and technical documents provided for testing, after testing the parts size must be written in the book of the drawings, must strictly abide by tolerance, for non - conforming precision machining parts,precision cnc machining parts, surveyors need to record in the bad product list of repairing, then signed by the repair personnel after repair processing for second inspection.Data is recorded on the defect change list.The drawing cases after testing are as following:

Drawings after testing