An EV motor lamination progressive die is precision strip-fed tooling used to blank and pierce thin electrical steel laminations for stator and rotor core applications. Unlike a general sheet metal progressive die, motor lamination tooling places particular emphasis on slot geometry, concentricity, edge condition, burr control, coating protection, strip stability and the dimensional relationship between individual laminations and the finished stack.
Dongguan Changdong Tool & Die Co., Ltd. can review custom EV motor lamination progressive die projects from the customer's stator or rotor drawing, electrical steel specification, lamination thickness, stacking requirement, destination press conditions and quality standard. The exact station quantity, working-component material, production speed and stacking mechanism must be confirmed project by project.
The objective is not simply to punch a thin circular part. A motor lamination die must maintain repeatable geometry and edge condition through continuous production while controlling the features that influence core assembly and downstream motor performance.
Strip layout should balance slot geometry, nesting, pitch, pilot location, carrier stability and electrical-steel utilization.
Punch condition, clearance, alignment and working-component wear directly influence lamination edge quality during repeated production.
Loose laminations, interlocking features, stack orientation, rotor skew and downstream stacking requirements should be defined during RFQ.
Tooling validation can include strip feeding, cutting condition, dimensional inspection and project-defined sample checks under suitable press conditions.
An EV motor lamination progressive die works with thin electrical steel where small changes in clearance, punch alignment, slot geometry or edge wear can affect the consistency of every lamination in the stack. The tooling process must therefore coordinate strip layout, pilot control, stator and rotor geometry, burr direction, electrical-steel coating, stacking requirements, press dynamics and inspection. The correct solution depends on the customer's material grade, thickness, motor-core design and production conditions.
Motor lamination tooling should begin with the complete core specification rather than only the outside diameter of the stator or rotor. Slot count, shaft or bore geometry, key features, material thickness, coating condition, stacking method and dimensional datums all affect the progressive process.
| RFQ Input | Why It Matters to the Tooling |
|---|---|
| Electrical steel grade & thickness | Influences cutting load, clearance, edge behavior, wear and strip handling. |
| Stator / rotor geometry | Defines slot punching, OD / ID relationship, pitch and station sequence. |
| Stacking requirement | Determines whether laminations remain loose or require defined interlocking, orientation or skew features. |
| Burr / edge specification | Sets the acceptance condition for cutting clearance, punch condition and maintenance planning. |
| Destination press | Press speed, shut height, bed dimensions, feed system and dynamic conditions must be compatible with the tool. |
| Inspection standard | Defines how slot geometry, diameters, flatness, burr, concentricity or stack-related characteristics will be verified. |
Strip layout is one of the earliest decisions in an EV motor lamination progressive die. Stator and rotor geometry may allow different nesting strategies, and material utilization should be considered together with pilot stability, scrap strength and station accuracy.
A layout that saves electrical steel but weakens the strip or creates unstable pilot engagement can increase production risk. Conversely, an overly conservative layout can increase coil consumption without improving lamination quality.
For the broader principles behind pitch, carrier design, pilots and station planning, see the Progressive Die Strip Layout Design Guide.
Thin electrical steel makes cutting condition especially important. Punch-to-die clearance, punch alignment, edge sharpness and wear can change the burr and fracture condition of the lamination edge.
Burr direction should be agreed with the customer's stacking and inspection requirements. Electrical-steel surface coating should also be protected from unnecessary scratching, pickup or handling damage during strip feeding and part discharge.
Clearance should be selected from the actual electrical steel grade and thickness rather than copied from a generic sheet-metal rule. General clearance engineering is explained in the Punch and Die Clearance Chart.
Not every motor lamination program uses the same stacking method. Some projects require loose laminations for later stacking, while others can specify mechanical interlocking, defined orientation or another customer-approved stack-building process.
Rotor designs may also require angular skew between successive laminations. When skew or interlocking is specified, the strip layout, indexing method, stacking control and inspection strategy need to be reviewed together.
These features should therefore be included in the initial RFQ rather than introduced after the die layout is already fixed.
An EV motor lamination progressive die can contain many closely spaced cutting features, making punch support, insert alignment and maintenance access important to long-run stability.
Working-component material, heat treatment and surface treatment should be selected according to the approved electrical steel, tooling standard and production condition. Changdong can heat-treat selected punches, inserts and cutting components to approximately HRC 58–60 where the chosen tool steel and application support that range. TD and Super TD treatment are available for selected in-house die components when required.
Tool life should not be presented as one universal stroke number. Maintenance interval depends on electrical steel, thickness, punch geometry, clearance, press condition, lubrication, production speed and the customer's accepted edge condition.
Motor lamination tooling is often marketed around press speed or nominal die life. Those numbers have limited value unless the buyer also knows the electrical steel, lamination geometry, burr requirement, stacking method, maintenance standard and press condition under which they were achieved.
For an EV motor lamination progressive die, a more useful sourcing discussion starts with the finished motor-core requirement and then works backward into strip layout, cutting condition, press dynamics, maintenance and inspection.
| Capability | Changdong Support | Important Condition |
|---|---|---|
| DFM / engineering review | Supported | Based on actual stator / rotor drawing, material and production requirement. |
| CNC / WEDM / grinding | Available through Changdong die manufacturing capability | Component process depends on drawing, tolerance, material and approved tooling design. |
| Press tryout | 45T–800T press capacity for suitable projects | Required production speed and dynamic press conditions must be confirmed during RFQ. |
| T0 reference | About 35 days after final requirements are confirmed | Complex lamination tooling schedule remains project-specific. |
| Inspection | CMM, optical measurement and project-defined validation support | Measurement scope must match the customer's lamination and stack requirements. |
For the broader manufacturing workflow, see Progressive Stamping Die Manufacturer. Tool inspection and approval principles are covered in Stamping Die Quality Control and Validation.
2D and 3D stator / rotor lamination drawings
Electrical steel grade, coating and exact thickness
Stator and rotor OD / ID, slot geometry and critical datums
Annual production requirement
Required burr direction and acceptance limit
Loose lamination, interlocking or other stacking requirement
Rotor skew requirement, if applicable
Destination press model, speed range, shut height and bed size
Feeder and coil specifications
Stacking-height, flatness and dimensional inspection requirements
Customer tooling standard and buyoff criteria
An EV motor lamination progressive die is strip-fed precision tooling used to blank and pierce electrical steel laminations for stator and rotor motor cores.
Motor lamination tooling should be engineered from the electrical steel grade and thickness, stator or rotor geometry, burr requirement, stacking method, strip layout, destination press and dimensional inspection requirements.
Dongguan Changdong Tool & Die Co., Ltd. supports custom progressive tooling development with DFM, CNC machining, WEDM, grinding, die assembly, suitable press tryout and sample validation. EV motor lamination projects remain subject to drawing, material, production-speed and tooling-standard review.
Changdong manufactures stamping dies and stamped metal parts. This page does not position Changdong as an EV motor manufacturer, electrical steel producer or complete motor-core assembly supplier.
An EV motor lamination progressive die is a multi-station strip-fed tool used to progressively pierce and blank electrical steel stator or rotor laminations while maintaining the dimensional and edge requirements defined by the motor-core design.
The acceptable thickness must be confirmed from the actual electrical steel grade, lamination drawing, tooling structure, burr requirement and destination press conditions. A minimum motor-lamination gauge is not quoted as a universal capability without project review.
Interlocking, stacking and rotor-skew requirements should be identified during the RFQ stage because they affect strip layout, indexing, die structure and inspection. The exact mechanism should be confirmed for the individual project.
Burr condition is influenced by electrical steel grade and thickness, punch-to-die clearance, alignment, cutting-edge condition, wear and maintenance. The required burr direction and acceptance limit should be defined by the customer drawing or quality standard.
Provide stator and rotor drawings, electrical steel specification and thickness, slot geometry, stacking method, burr requirement, required production volume, destination press data, feed information and dimensional or stack-validation criteria.
Send the stator or rotor drawing, electrical steel grade, lamination thickness, stacking requirement, production target and destination press information for a project-specific tooling review.
Send EV Motor Core Drawing for Tooling ReviewChangdong 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
An EV motor lamination progressive die is precision strip-fed tooling used to blank and pierce thin electrical steel laminations for stator and rotor core applications. Unlike a general sheet metal progressive die, motor lamination tooling places particular emphasis on slot geometry, concentricity, edge condition, burr control, coating protection, strip stability and the dimensional relationship between individual laminations and the finished stack.
Dongguan Changdong Tool & Die Co., Ltd. can review custom EV motor lamination progressive die projects from the customer's stator or rotor drawing, electrical steel specification, lamination thickness, stacking requirement, destination press conditions and quality standard. The exact station quantity, working-component material, production speed and stacking mechanism must be confirmed project by project.
The objective is not simply to punch a thin circular part. A motor lamination die must maintain repeatable geometry and edge condition through continuous production while controlling the features that influence core assembly and downstream motor performance.
Strip layout should balance slot geometry, nesting, pitch, pilot location, carrier stability and electrical-steel utilization.
Punch condition, clearance, alignment and working-component wear directly influence lamination edge quality during repeated production.
Loose laminations, interlocking features, stack orientation, rotor skew and downstream stacking requirements should be defined during RFQ.
Tooling validation can include strip feeding, cutting condition, dimensional inspection and project-defined sample checks under suitable press conditions.
An EV motor lamination progressive die works with thin electrical steel where small changes in clearance, punch alignment, slot geometry or edge wear can affect the consistency of every lamination in the stack. The tooling process must therefore coordinate strip layout, pilot control, stator and rotor geometry, burr direction, electrical-steel coating, stacking requirements, press dynamics and inspection. The correct solution depends on the customer's material grade, thickness, motor-core design and production conditions.
Motor lamination tooling should begin with the complete core specification rather than only the outside diameter of the stator or rotor. Slot count, shaft or bore geometry, key features, material thickness, coating condition, stacking method and dimensional datums all affect the progressive process.
| RFQ Input | Why It Matters to the Tooling |
|---|---|
| Electrical steel grade & thickness | Influences cutting load, clearance, edge behavior, wear and strip handling. |
| Stator / rotor geometry | Defines slot punching, OD / ID relationship, pitch and station sequence. |
| Stacking requirement | Determines whether laminations remain loose or require defined interlocking, orientation or skew features. |
| Burr / edge specification | Sets the acceptance condition for cutting clearance, punch condition and maintenance planning. |
| Destination press | Press speed, shut height, bed dimensions, feed system and dynamic conditions must be compatible with the tool. |
| Inspection standard | Defines how slot geometry, diameters, flatness, burr, concentricity or stack-related characteristics will be verified. |
Strip layout is one of the earliest decisions in an EV motor lamination progressive die. Stator and rotor geometry may allow different nesting strategies, and material utilization should be considered together with pilot stability, scrap strength and station accuracy.
A layout that saves electrical steel but weakens the strip or creates unstable pilot engagement can increase production risk. Conversely, an overly conservative layout can increase coil consumption without improving lamination quality.
For the broader principles behind pitch, carrier design, pilots and station planning, see the Progressive Die Strip Layout Design Guide.
Thin electrical steel makes cutting condition especially important. Punch-to-die clearance, punch alignment, edge sharpness and wear can change the burr and fracture condition of the lamination edge.
Burr direction should be agreed with the customer's stacking and inspection requirements. Electrical-steel surface coating should also be protected from unnecessary scratching, pickup or handling damage during strip feeding and part discharge.
Clearance should be selected from the actual electrical steel grade and thickness rather than copied from a generic sheet-metal rule. General clearance engineering is explained in the Punch and Die Clearance Chart.
Not every motor lamination program uses the same stacking method. Some projects require loose laminations for later stacking, while others can specify mechanical interlocking, defined orientation or another customer-approved stack-building process.
Rotor designs may also require angular skew between successive laminations. When skew or interlocking is specified, the strip layout, indexing method, stacking control and inspection strategy need to be reviewed together.
These features should therefore be included in the initial RFQ rather than introduced after the die layout is already fixed.
An EV motor lamination progressive die can contain many closely spaced cutting features, making punch support, insert alignment and maintenance access important to long-run stability.
Working-component material, heat treatment and surface treatment should be selected according to the approved electrical steel, tooling standard and production condition. Changdong can heat-treat selected punches, inserts and cutting components to approximately HRC 58–60 where the chosen tool steel and application support that range. TD and Super TD treatment are available for selected in-house die components when required.
Tool life should not be presented as one universal stroke number. Maintenance interval depends on electrical steel, thickness, punch geometry, clearance, press condition, lubrication, production speed and the customer's accepted edge condition.
Motor lamination tooling is often marketed around press speed or nominal die life. Those numbers have limited value unless the buyer also knows the electrical steel, lamination geometry, burr requirement, stacking method, maintenance standard and press condition under which they were achieved.
For an EV motor lamination progressive die, a more useful sourcing discussion starts with the finished motor-core requirement and then works backward into strip layout, cutting condition, press dynamics, maintenance and inspection.
| Capability | Changdong Support | Important Condition |
|---|---|---|
| DFM / engineering review | Supported | Based on actual stator / rotor drawing, material and production requirement. |
| CNC / WEDM / grinding | Available through Changdong die manufacturing capability | Component process depends on drawing, tolerance, material and approved tooling design. |
| Press tryout | 45T–800T press capacity for suitable projects | Required production speed and dynamic press conditions must be confirmed during RFQ. |
| T0 reference | About 35 days after final requirements are confirmed | Complex lamination tooling schedule remains project-specific. |
| Inspection | CMM, optical measurement and project-defined validation support | Measurement scope must match the customer's lamination and stack requirements. |
For the broader manufacturing workflow, see Progressive Stamping Die Manufacturer. Tool inspection and approval principles are covered in Stamping Die Quality Control and Validation.
2D and 3D stator / rotor lamination drawings
Electrical steel grade, coating and exact thickness
Stator and rotor OD / ID, slot geometry and critical datums
Annual production requirement
Required burr direction and acceptance limit
Loose lamination, interlocking or other stacking requirement
Rotor skew requirement, if applicable
Destination press model, speed range, shut height and bed size
Feeder and coil specifications
Stacking-height, flatness and dimensional inspection requirements
Customer tooling standard and buyoff criteria
An EV motor lamination progressive die is strip-fed precision tooling used to blank and pierce electrical steel laminations for stator and rotor motor cores.
Motor lamination tooling should be engineered from the electrical steel grade and thickness, stator or rotor geometry, burr requirement, stacking method, strip layout, destination press and dimensional inspection requirements.
Dongguan Changdong Tool & Die Co., Ltd. supports custom progressive tooling development with DFM, CNC machining, WEDM, grinding, die assembly, suitable press tryout and sample validation. EV motor lamination projects remain subject to drawing, material, production-speed and tooling-standard review.
Changdong manufactures stamping dies and stamped metal parts. This page does not position Changdong as an EV motor manufacturer, electrical steel producer or complete motor-core assembly supplier.
An EV motor lamination progressive die is a multi-station strip-fed tool used to progressively pierce and blank electrical steel stator or rotor laminations while maintaining the dimensional and edge requirements defined by the motor-core design.
The acceptable thickness must be confirmed from the actual electrical steel grade, lamination drawing, tooling structure, burr requirement and destination press conditions. A minimum motor-lamination gauge is not quoted as a universal capability without project review.
Interlocking, stacking and rotor-skew requirements should be identified during the RFQ stage because they affect strip layout, indexing, die structure and inspection. The exact mechanism should be confirmed for the individual project.
Burr condition is influenced by electrical steel grade and thickness, punch-to-die clearance, alignment, cutting-edge condition, wear and maintenance. The required burr direction and acceptance limit should be defined by the customer drawing or quality standard.
Provide stator and rotor drawings, electrical steel specification and thickness, slot geometry, stacking method, burr requirement, required production volume, destination press data, feed information and dimensional or stack-validation criteria.
Send the stator or rotor drawing, electrical steel grade, lamination thickness, stacking requirement, production target and destination press information for a project-specific tooling review.
Send EV Motor Core Drawing for Tooling ReviewDongguan 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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