Stamping die quality control should begin before machining and continue through material confirmation, component inspection, die assembly, press tryout, sample measurement and final delivery review. Final inspection alone cannot identify every tooling, forming or production risk.
Dongguan Changdong Tool & Die Co., Ltd. connects engineering, tooling manufacture, assembly, 45T–800T press tryout and dimensional inspection within the same project workflow. Inspection items and acceptance criteria are defined according to the drawing, material, die structure, project stage and agreed customer requirements.
Part material, thickness and selected die-component materials are checked against approved project requirements.
Machined plates, punches, inserts, cutting edges and assembly relationships are inspected at suitable project stages.
Suitable in-house presses support die spotting, forming correction, feeding review and stamped-sample validation.
CMM, 2D optical measurement, 3D optical scanning and checking fixtures are selected according to the part.
Stamping die validation combines tooling inspection with actual press results. The die is checked during manufacturing and assembly, tested on a suitable press, corrected according to forming and dimensional results, and supported by sample inspection. A die is not considered ready only because its individual components match the 3D design; feeding, cutting, forming, scrap discharge, springback and sample dimensions must also be reviewed under suitable project conditions.
| Project Stage | Typical Checks | Quality Purpose |
|---|---|---|
| Drawing and requirement review | Part revision, datums, critical dimensions, material, thickness, burr direction and customer press information | Establish the inspection and validation basis before manufacturing |
| Material and tool-steel confirmation | Part material specification, die-component material and supporting documentation when required | Reduce the risk of using an incorrect material grade or treatment route |
| Machining inspection | Die plates, inserts, punches, cutting profiles, holes, datum surfaces and fitting dimensions | Confirm component condition before final assembly and spotting |
| Heat treatment and working components | Material-specific treatment, hardness and component condition according to the approved tooling plan | Support the required balance of hardness, toughness and wear resistance |
| Assembly and spotting | Guide alignment, component fit, shut height, cutting clearance, contact condition and moving mechanisms | Prepare the die for controlled press tryout |
| Press tryout | Feeding, piloting, forming, trimming, burrs, scrap flow, springback and sample condition | Identify actual tooling and forming issues under press conditions |
| Sample validation | Drawing dimensions, profiles, datums, hole positions and selected functional features | Compare stamped samples with agreed drawing requirements |
| Pre-shipment review | Tooling status, approved sample status, reports, agreed accessories and project documents | Confirm the agreed delivery scope before packing and shipment |
| Inspection Method | Typical Use | Selection Conditions |
|---|---|---|
| CMM | Datums, hole positions, coordinates, profiles and selected three-dimensional features | Used according to part size, geometry, access and drawing requirements |
| 2D optical projector | Small profiles, edges, radii, angles, hole dimensions and flat stamped features | Suitable when features can be clearly captured in a two-dimensional view |
| 3D optical scanner | Surface comparison, complex formed shapes and broader deviation visualization | Subject to part size, surface condition, scanning access and project requirements |
| Checking fixture | Part location, datum reference, profile condition and selected functional checks | Fixture design and checking points are project-specific |
| CCD vision inspection | Selected repeatable visual or dimensional features in suitable stamping applications | Depends on feature visibility, production setup and inspection objective |
The first assembled-tool tryout is used to observe basic feeding, cutting, forming, scrap flow, springback and sample condition. It may identify areas requiring correction.
After engineering adjustments, additional tryout rounds can be used to review corrected dimensions, forming stability and remaining issues. Stage names vary by customer.
Sample status is confirmed against the agreed drawing, inspection plan and customer approval process. Changdong does not apply one universal approval rule to every project.
A typical T0 sample timing is about 35 days after final drawings and technical requirements are confirmed. Actual timing and the number of correction rounds depend on die type, size, geometry, material behavior, engineering changes and project conditions.
A stamped sample can meet selected dimensions during one isolated press stroke while the tooling still has unstable feeding, scrap discharge, stripping or springback behavior. Conversely, stable press operation does not confirm that every critical feature meets the drawing.
Reliable validation therefore combines dimensional inspection with press observations and tooling-condition review. Trial quantity, run duration and acceptance evidence should be defined by the project instead of using an unsupported fixed stroke count.
Depending on the agreed project scope, validation records may include:
Dimensional inspection results based on selected drawing characteristics
CMM, optical measurement or checking-fixture records when applicable
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Changdong is good at making metal stamping dies up to 4.2 meters, also we produce small size metal stamping toolings. The company manages the complete stamping die program from the CAE Simulation, layout designs and stamping tooling designs, and finish the machining to tryout and home line tryout to your hands. Meanwhile, the company produces the prototyping parts and stamping parts range from 45-880T. The successful cases include: stamping tools of Leoni connectors, automotive stamping dies of PSA P8 & B618, metal stamping toolings of Cummins exhaust pipe assembly, automobile stamping dies of NISSAN H60B projects, and stamping tools of car audio system, Canon printers, refrigerators, ovens and washing machines and so on.If you need metal stamping dies ,stamping parts or metal prototypings,
Email to us: sales@chang-dong.com
Stamping die quality control should begin before machining and continue through material confirmation, component inspection, die assembly, press tryout, sample measurement and final delivery review. Final inspection alone cannot identify every tooling, forming or production risk.
Dongguan Changdong Tool & Die Co., Ltd. connects engineering, tooling manufacture, assembly, 45T–800T press tryout and dimensional inspection within the same project workflow. Inspection items and acceptance criteria are defined according to the drawing, material, die structure, project stage and agreed customer requirements.
Part material, thickness and selected die-component materials are checked against approved project requirements.
Machined plates, punches, inserts, cutting edges and assembly relationships are inspected at suitable project stages.
Suitable in-house presses support die spotting, forming correction, feeding review and stamped-sample validation.
CMM, 2D optical measurement, 3D optical scanning and checking fixtures are selected according to the part.
Stamping die validation combines tooling inspection with actual press results. The die is checked during manufacturing and assembly, tested on a suitable press, corrected according to forming and dimensional results, and supported by sample inspection. A die is not considered ready only because its individual components match the 3D design; feeding, cutting, forming, scrap discharge, springback and sample dimensions must also be reviewed under suitable project conditions.
| Project Stage | Typical Checks | Quality Purpose |
|---|---|---|
| Drawing and requirement review | Part revision, datums, critical dimensions, material, thickness, burr direction and customer press information | Establish the inspection and validation basis before manufacturing |
| Material and tool-steel confirmation | Part material specification, die-component material and supporting documentation when required | Reduce the risk of using an incorrect material grade or treatment route |
| Machining inspection | Die plates, inserts, punches, cutting profiles, holes, datum surfaces and fitting dimensions | Confirm component condition before final assembly and spotting |
| Heat treatment and working components | Material-specific treatment, hardness and component condition according to the approved tooling plan | Support the required balance of hardness, toughness and wear resistance |
| Assembly and spotting | Guide alignment, component fit, shut height, cutting clearance, contact condition and moving mechanisms | Prepare the die for controlled press tryout |
| Press tryout | Feeding, piloting, forming, trimming, burrs, scrap flow, springback and sample condition | Identify actual tooling and forming issues under press conditions |
| Sample validation | Drawing dimensions, profiles, datums, hole positions and selected functional features | Compare stamped samples with agreed drawing requirements |
| Pre-shipment review | Tooling status, approved sample status, reports, agreed accessories and project documents | Confirm the agreed delivery scope before packing and shipment |
| Inspection Method | Typical Use | Selection Conditions |
|---|---|---|
| CMM | Datums, hole positions, coordinates, profiles and selected three-dimensional features | Used according to part size, geometry, access and drawing requirements |
| 2D optical projector | Small profiles, edges, radii, angles, hole dimensions and flat stamped features | Suitable when features can be clearly captured in a two-dimensional view |
| 3D optical scanner | Surface comparison, complex formed shapes and broader deviation visualization | Subject to part size, surface condition, scanning access and project requirements |
| Checking fixture | Part location, datum reference, profile condition and selected functional checks | Fixture design and checking points are project-specific |
| CCD vision inspection | Selected repeatable visual or dimensional features in suitable stamping applications | Depends on feature visibility, production setup and inspection objective |
The first assembled-tool tryout is used to observe basic feeding, cutting, forming, scrap flow, springback and sample condition. It may identify areas requiring correction.
After engineering adjustments, additional tryout rounds can be used to review corrected dimensions, forming stability and remaining issues. Stage names vary by customer.
Sample status is confirmed against the agreed drawing, inspection plan and customer approval process. Changdong does not apply one universal approval rule to every project.
A typical T0 sample timing is about 35 days after final drawings and technical requirements are confirmed. Actual timing and the number of correction rounds depend on die type, size, geometry, material behavior, engineering changes and project conditions.
A stamped sample can meet selected dimensions during one isolated press stroke while the tooling still has unstable feeding, scrap discharge, stripping or springback behavior. Conversely, stable press operation does not confirm that every critical feature meets the drawing.
Reliable validation therefore combines dimensional inspection with press observations and tooling-condition review. Trial quantity, run duration and acceptance evidence should be defined by the project instead of using an unsupported fixed stroke count.
Depending on the agreed project scope, validation records may include:
Dimensional inspection results based on selected drawing characteristics
CMM, optical measurement or checking-fixture records when applicable
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Dongguan Changdong Stamping Dies CO., LTD. © copyright Add：NO. 56-B, Fuming South Road, Dalang, Dongguan, P.R.C
E-mail: sales@chang-dong.com Tel: 0086-769-8106 1256 Mobile: 0086-189 2949 4380 Sales Manager: Ms. Alice Fax: 0086-769-8106 1926
Dongguan Changdong Tool & Die Co., Ltd. is a custom metal stamping die and stamped parts manufacturer founded in 2012. We support automotive, home appliance, electrical and industrial projects from DFM review and die design to press tryout, sample validation and metal stamping production.
Main capabilities: Stamping Dies | Progressive Die | Transfer Die | Prototype Die | Prototype Tooling | Stamping Parts | Custom Metal Stamping Parts
For new tooling or stamping projects, please send your 2D drawing, 3D model, material grade, sheet thickness, tolerance requirements, annual volume and sample target date through Contact Us.
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