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I. Processing Procedures
1. Design and Modeling: According to the shape, size, and precision requirements of the workpiece to be trimmed, a 3D model of the punch is constructed using CAD/CAM software. The structural details such as the forming surface, trimming edge, and mounting holes are planned.
2. Blank Preparation: Select blanks of the corresponding material. Ensure that the composition, size, etc. meet the requirements through inspection, laying a foundation for subsequent processing.
3. Rough Machining: Through methods such as CNC milling and turning, most of the allowance is removed, and the outline of the punch is initially sketched, leaving a reasonable machining allowance for finishing.
4. Heat Treatment: Perform processes such as quenching + tempering on the blank. For SKD61, it is necessary to precisely control the temperature and holding time to optimize the internal structure and improve mechanical properties such as hardness (for example, the hardness of SKD61 can reach a reasonable range of HRC45 - 53 after heat treatment) and toughness. For ST7, adjust the heat treatment parameters as needed to enhance performance.
5. Finishing: Use high - precision CNC equipment and grinding processes to finely process key parts such as the punch surface and edge. Control the dimensional tolerance (such as ±0.01mm level precision) and surface roughness to ensure trimming accuracy and quality.
6. Optional Surface Treatment: For SKD61 and the like, processes such as nitriding and PVD coating can be adopted to enhance the surface wear resistance and corrosion resistance and extend the service life. ST7 can also undergo surface treatment as needed to optimize performance.
7. Quality Inspection: Use equipment such as a coordinate measuring machine and a hardness tester to conduct multi - dimensional inspections of the punch's dimensional accuracy, hardness, and surface quality to ensure compliance with design and use standards.
II. Application Scenarios
It is widely used in industries such as automobile manufacturing (for example, trimming of body panels and chassis parts, and precise trimming of automotive parts made of aluminum alloy, steel plate, etc.), aerospace(high - precision trimming operations of aerospace parts, suitable for difficult - to - process materials such as titanium alloy and aluminum alloy), hardware processing (trimming processes of various metal sheets and profiles in the production of hardware products), and home appliance manufacturing(trimming of metal parts such as home appliance casings and structural parts). In the stamping die system, it cooperates with the die to realize processing operations such as trimming and chamfering of metal workpieces.
III. Precautions for Use
1. Installation Adaptation: Clean the punch and the die - mounting surface before installation to remove impurities such as oil, iron filings, etc. Strictly follow the die assembly process and use professional tools (such as torque wrenches, hydraulic tooling) for installation. Control the installation pressure and position accuracy. Avoid violent installation that may cause deformation and damage to the punch, affecting the trimming accuracy.
2. Working Condition Matching: According to the working conditions such as the material (such as aluminum alloy, high - strength steel), thickness, and production rhythm of the workpiece to be trimmed, confirm whether the punch material (ST7 or SKD61) and edge parameters are suitable. In extreme working conditions such as high - speed stamping and continuous production, strengthen equipment inspection and monitor the working status of the punch.
3. Material Cleaning: Ensure that the surface of the workpiece to be processed is clean, free of oil, impurities, rust, etc. Prevent impurities from entering the die gap, damaging the punch edge and surface, and affecting the trimming quality and die life.
4. Pressure Control: Debug the pressure parameters of the stamping equipment to make the pressure between the punch and the die suitable. Too low pressure may easily result in incomplete trimming and large burrs; too high pressure may aggravate punch wear and deformation, and even cause die damage.
IV. Product Maintenance
1. Regular Cleaning: Combine with the die maintenance cycle to regularly clean the surface of the punch. Use a special cleaning agent and a soft brush to remove oil, iron filings, etc. For SKD61 coated punches, avoid scratching the surface coating with hard tools.
2. Wear Detection: Regularly (for example, after producing a certain number of workpieces) check the wear condition of the punch edge. Through visual inspection, measuring tool measurement, etc., if edge chipping or excessive wear beyond the tolerance (such as the increase of the edge fillet affecting the trimming quality) is found, repair or replace it in a timely manner.
3. Lubrication Management: Lubricate the contact parts between the punch and the workpiece and the die as needed (such as selecting a suitable stamping lubricating oil). Especially in high - speed and continuous stamping scenarios, good lubrication can reduce friction and wear. SKD61 material punches also need reasonable lubrication to ensure performance.
4. Storage Protection: For idle or replaced punches, clean them, apply anti - rust oil, and place them on a special dry and dust - proof storage rack. Avoid mixing them with sharp and hard objects to prevent磕碰, rust, and affect the accuracy and performance for the next use.
With the advantages of different materials of ST7 and SKD61 and through precision processing, the trimming punch is suitable for the trimming needs of metal processing in multiple industries. Standardized use and maintenance can ensure its efficient and stable operation, helping to improve the processing quality and production efficiency of products.
I. Processing Procedures
1. Design and Modeling: According to the shape, size, and precision requirements of the workpiece to be trimmed, a 3D model of the punch is constructed using CAD/CAM software. The structural details such as the forming surface, trimming edge, and mounting holes are planned.
2. Blank Preparation: Select blanks of the corresponding material. Ensure that the composition, size, etc. meet the requirements through inspection, laying a foundation for subsequent processing.
3. Rough Machining: Through methods such as CNC milling and turning, most of the allowance is removed, and the outline of the punch is initially sketched, leaving a reasonable machining allowance for finishing.
4. Heat Treatment: Perform processes such as quenching + tempering on the blank. For SKD61, it is necessary to precisely control the temperature and holding time to optimize the internal structure and improve mechanical properties such as hardness (for example, the hardness of SKD61 can reach a reasonable range of HRC45 - 53 after heat treatment) and toughness. For ST7, adjust the heat treatment parameters as needed to enhance performance.
5. Finishing: Use high - precision CNC equipment and grinding processes to finely process key parts such as the punch surface and edge. Control the dimensional tolerance (such as ±0.01mm level precision) and surface roughness to ensure trimming accuracy and quality.
6. Optional Surface Treatment: For SKD61 and the like, processes such as nitriding and PVD coating can be adopted to enhance the surface wear resistance and corrosion resistance and extend the service life. ST7 can also undergo surface treatment as needed to optimize performance.
7. Quality Inspection: Use equipment such as a coordinate measuring machine and a hardness tester to conduct multi - dimensional inspections of the punch's dimensional accuracy, hardness, and surface quality to ensure compliance with design and use standards.
II. Application Scenarios
It is widely used in industries such as automobile manufacturing (for example, trimming of body panels and chassis parts, and precise trimming of automotive parts made of aluminum alloy, steel plate, etc.), aerospace(high - precision trimming operations of aerospace parts, suitable for difficult - to - process materials such as titanium alloy and aluminum alloy), hardware processing (trimming processes of various metal sheets and profiles in the production of hardware products), and home appliance manufacturing(trimming of metal parts such as home appliance casings and structural parts). In the stamping die system, it cooperates with the die to realize processing operations such as trimming and chamfering of metal workpieces.
III. Precautions for Use
1. Installation Adaptation: Clean the punch and the die - mounting surface before installation to remove impurities such as oil, iron filings, etc. Strictly follow the die assembly process and use professional tools (such as torque wrenches, hydraulic tooling) for installation. Control the installation pressure and position accuracy. Avoid violent installation that may cause deformation and damage to the punch, affecting the trimming accuracy.
2. Working Condition Matching: According to the working conditions such as the material (such as aluminum alloy, high - strength steel), thickness, and production rhythm of the workpiece to be trimmed, confirm whether the punch material (ST7 or SKD61) and edge parameters are suitable. In extreme working conditions such as high - speed stamping and continuous production, strengthen equipment inspection and monitor the working status of the punch.
3. Material Cleaning: Ensure that the surface of the workpiece to be processed is clean, free of oil, impurities, rust, etc. Prevent impurities from entering the die gap, damaging the punch edge and surface, and affecting the trimming quality and die life.
4. Pressure Control: Debug the pressure parameters of the stamping equipment to make the pressure between the punch and the die suitable. Too low pressure may easily result in incomplete trimming and large burrs; too high pressure may aggravate punch wear and deformation, and even cause die damage.
IV. Product Maintenance
1. Regular Cleaning: Combine with the die maintenance cycle to regularly clean the surface of the punch. Use a special cleaning agent and a soft brush to remove oil, iron filings, etc. For SKD61 coated punches, avoid scratching the surface coating with hard tools.
2. Wear Detection: Regularly (for example, after producing a certain number of workpieces) check the wear condition of the punch edge. Through visual inspection, measuring tool measurement, etc., if edge chipping or excessive wear beyond the tolerance (such as the increase of the edge fillet affecting the trimming quality) is found, repair or replace it in a timely manner.
3. Lubrication Management: Lubricate the contact parts between the punch and the workpiece and the die as needed (such as selecting a suitable stamping lubricating oil). Especially in high - speed and continuous stamping scenarios, good lubrication can reduce friction and wear. SKD61 material punches also need reasonable lubrication to ensure performance.
4. Storage Protection: For idle or replaced punches, clean them, apply anti - rust oil, and place them on a special dry and dust - proof storage rack. Avoid mixing them with sharp and hard objects to prevent磕碰, rust, and affect the accuracy and performance for the next use.
With the advantages of different materials of ST7 and SKD61 and through precision processing, the trimming punch is suitable for the trimming needs of metal processing in multiple industries. Standardized use and maintenance can ensure its efficient and stable operation, helping to improve the processing quality and production efficiency of products.
