QUALITY CHECK Quality Assurance System

Quality Assurance System

At Umehara Model, we have established a temperature-controlled room in our Quality Control Department, maintaining an environment of 20°C ±1°C for 24 hours, enabling us to respond to prototype inquiries requiring precision in recent years. We work closely with the Manufacturing Department to ensure thorough self-checks by manufacturing personnel, in-process inspections, and instructions for intermediate inspections. We are committed daily to manufacturing that meets the specifications required by our customers.

Inspection System

Dedicated inspectors perform inspections on all products using various measuring instruments. We attach inspection reports to products after inspections are completed. While sampling inspection is standard, we also accommodate full inspections. We deliver products that have passed each process to our customers.

Dimensional Inspection

We measure dimensions based on the drawings.

We use calipers and gauges to measure distances and diameters.
We also measure Ra and Rz with a surface roughness tester.

Measuring Ra and Rz with a surface roughness tester

We can also perform multi-faceted hole-pitch measurement using a 3D coordinate measuring machine.

Multi-faceted hole-pitch measurement using a 3D CMM

Visual Inspection

We verify that the product’s shape matches your specifications,
and check for any defects such as burrs, scratches, or damage.

We check the product for burrs, scratches, and any damage.

Checking for burrs, scratches, and damage

If no drawings are available, we verify the shape using 3D data.

Shape verification using 3D data

Quality System Flow

Quality System Flow

Main Inspection Equipment

3D Measuring Machines Manufacturer Model Quantity Specifications
Mitutoyo CNC 3D Measuring Machine
CRYSTA-ApexS 7106 		2 units 700(X)×1,000(Y)×600(Z)
Surface Roughness and Contour Measuring Machine Tokyo Seimitsu SURFCOM NEX100 DX-12 1 unit
CRYSTA-ApexS 7106
Work Size
700×1000×600
SURFCOM NEX100
Work Size
X-axis Stroke 100
Z-axis Stroke 250
3D scanner-type coordinate measuring machine VL700 VL-H3G
3D Coordinate Measuring Machine
Model: 3D scanner-type CMM VL700 VL-H3G
Manufacturer: KEYENCE
Quantity: 1 unit
Workpiece Size: φ500 × H200 mm

In addition to the above equipment, we conduct inspections using a wide range of general-purpose measuring instruments.