Punched Parts Punching Metal Sheet Fabrication

• Customization: Available
• After-sales Service: Online Technology Support
• Warranty: 1 Year
• Type: Hot Stamping
• Processing Type: Shaping Metal
• Material: Any Metal
• Mould: Multistep Progressive Dies
• Surface Processing: Electroplating
• Fine Blanking: Multi-Position
• Process: Forming Process
• Industry: Metal Stamping Parts
• Tolerances: 0.02mm
• Customized: Customized
• Transport Package: Carton, Pallet
• Specification: 100 x 100 x150
• Trademark: bosswinn
• Origin: China
• HS Code: 7320209000
• Production Capacity: 100000 PCS

Product Description

 

Product Description

 

Punching parts for household appliances and machinery are components manufactured through the punching process and used in the production of household appliances and machinery. Here are the details:

 

Punching Parts for Household Appliances

 

• Function and Application5: In household appliances, punching parts are widely used in the shells and panels of various appliances. For example, the outer shell of a refrigerator, the panel of a washing machine, and the cover of a microwave oven may all be made of punching parts. The punching process can create holes and bumps on these parts. The holes can be used for ventilation, heat dissipation, and installation of other components, while the bumps can enhance the strength and aesthetics of the parts.
• Material Selection: Common materials for punching parts in household appliances include stainless steel, aluminum alloy, and cold - rolled steel. Stainless steel has good corrosion resistance and strength, suitable for parts that need to be durable; aluminum alloy is lightweight and has good thermal conductivity, which is often used in some heat - sensitive appliances; cold - rolled steel has good formability and low cost, and is widely used in general - purpose household appliance parts.

 

Punching Parts for Machinery

 

• Function and Application: Punching parts in machinery are mainly used in the manufacturing of mechanical equipment components, such as the frames, brackets, and connection plates of machines. They provide support, connection, and fixation functions for mechanical equipment, ensuring the stability and reliability of the equipment during operation. For example, in industrial production equipment, punching - made frames and brackets can bear the weight of the equipment and various components, and transmit forces and torques. In addition, some punching parts are also used in the transmission and control systems of machinery, such as gears and cams made by punching, which can realize the conversion and transmission of motion and power.
• Material Selection: The materials for punching parts in machinery are usually required to have higher strength and toughness. Alloy steel, carbon steel, and other materials are commonly used. Alloy steel has excellent comprehensive mechanical properties and can meet the requirements of high - strength and high - wear - resistance parts; carbon steel has a relatively low cost and can meet the general - strength requirements of mechanical parts. For some special - purpose machinery, materials with special properties, such as heat - resistant steel and corrosion - resistant steel, may be selected according to the specific working environment and requirements of the equipment.

 

 

 

 

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Category	Details
Workcraft	- CNC Punching Machining: High - precision punching operations for complex shapes. - Stamping: Mass - production of flat - shaped parts with high efficiency. - Laser Cutting: Precise cutting of various materials with narrow kerf. - Bending: Forming parts into desired angles. - Threading: Creating internal or external threads for fastening. - Welding: Joining different parts together, including MIG, TIG, and spot welding. - Deep Drawing: Forming cup - shaped or complex - shaped parts from flat sheets. - Polishing: Surface finishing to improve appearance and smoothness, including mirror and electrolytic polishing. - Tapping: Making internal threads in holes. - Riveting: Joining parts using rivets for a permanent connection. - Final Assembly: Assembling all components into a complete product.
Materials we can process on	- Any Steel Sheet: Mild steel, stainless steel (304, 316, etc.), galvanized steel. - Copper: Pure copper and various copper alloys. - Aluminum: Different aluminum alloys like 6061, 7075. - Brass: Composed of copper and zinc, with different compositions for various applications. - Iron: Cast iron, wrought iron, etc.
Surface Treatment	- Brushing: Creates a uniform, brushed - metal finish. - Sand Blasting: Removes surface contaminants and creates a matte finish. - Electroplating: - Zinc Coating: Provides corrosion resistance and is cost - effective. - Nickel Coating: Enhances corrosion resistance and hardness. - Chrome Coating: Gives a shiny, durable, and corrosion - resistant finish. - Powder Coating: A thick, durable, and colorful finish with good adhesion. - Polishing: - Mirror Polishing: Achieves a highly reflective surface. - Electrolytic Polishing: Improves surface smoothness at the microscopic level.
Tolerance	The best achievable tolerance is ±0.01mm, which can be adjusted according to specific product requirements. For general applications, tolerances in the range of ±0.1 - ±0.5mm are also commonly used.
Packing	- Carton: Suitable for small - to - medium - sized parts. Cartons can be customized with protective inserts such as foam or bubble wrap. - Pallet: Used for larger or heavier parts. Parts are stacked on pallets and secured with straps or shrink - wrap for easy transportation and storage.
Application	- Electrics: Parts for electrical enclosures, switches, and circuit - board mounts. - Vehicles: Components for automotive bodies, engines, and interiors. - Construction Machineries: Structural parts, brackets, and covers. - Engineering Machineries: Parts for manufacturing equipment, such as frames and connection plates. - Food Machineries: Hygienic - grade parts that meet food - safety standards, like food - contact surfaces and conveyor components.
Quality Control	- In - house Testing Tooling: We have a range of specialized tools for dimensional, material, and performance testing. - Third - Party Tests: Can arrange for various tests from accredited third - party laboratories, such as material composition analysis, mechanical property testing, and corrosion resistance testing. - Inspection Phases: - IQC (Incoming Quality Control): Checks incoming raw materials. - PQC (Process Quality Control): Monitors the manufacturing process at various stages. - FQC (Final Quality Control): Inspects finished products before packaging. - OQA (Outgoing Quality Assurance): Verifies the quality of products before shipment.
Technical File Formats	- Solidworks: 3D CAD software format for detailed design and assembly. - PRO/E: Another popular 3D CAD format for product design. - AutoCAD: Widely used for 2D and 3D design, with DWG and DXF as common file extensions. - PDF: Portable document format for sharing design documents in a non - editable, view - only format. - Step, Stp: Standard for the exchange of product model data, allowing seamless transfer between different CAD systems. - Dwg: Native AutoCAD file format. - Drw: Drawing file format, often used for 2D engineering drawings. - Prt: Part file format in some CAD systems, representing individual components.

 

Our production

 

1. Production Planning and Scheduling

1.1 Order Prioritization

• Analyze customer orders based on delivery time, quantity, and complexity. High - priority orders, such as those with tight deadlines or large volumes, should be scheduled first. For example, if a customer has an urgent order for a simple metal part that is crucial for their production line, it should take precedence over other less time - sensitive orders.

1.2 Capacity Planning

• Regularly assess the punching machine capacity. Consider factors like the number of machines, their working hours, and the cycle time of each punching operation. If the production demand consistently exceeds the current capacity, plan for machine upgrades, additional shifts, or outsourcing of some orders. For instance, if the monthly order volume requires 3000 machine - hours, but the existing machines can only provide 2500 machine - hours, appropriate measures need to be taken.

2. Equipment Management

2.1 Machine Maintenance

• Establish a preventive maintenance schedule for punching machines. This includes daily inspections of key components like punches, dies, and the drive system. Lubricate moving parts regularly to reduce wear and tear. For example, punches should be checked for signs of chipping or wear every day, and dies should be cleaned and lubricated at least once a week.

• Periodically perform more in - depth maintenance, such as replacing worn - out parts, calibrating the machine's accuracy, and testing the electrical and hydraulic systems. Annual overhauls can help ensure the long - term reliability of the machines.

2.2 Tool Management

• Manage punches and dies carefully. Store them in a proper environment to prevent rust and damage. Implement a tool tracking system to know the usage history, maintenance needs, and remaining lifespan of each tool. For example, use barcodes or RFID tags to label tools and record their usage on a digital database.

• When a tool shows signs of wear, either re - sharpen or replace it in a timely manner. The wear of punches and dies can directly affect the quality of the punched parts.

3. Quality Control

3.1 In - process Inspection

• Set up inspection points during the punching process. Use gauges, calipers, and other measuring tools to check the dimensions of the punched parts at regular intervals. For example, for a part with a critical dimension of 10 ± 0.1 mm, measure every 50 - 100 parts produced to ensure the dimension remains within the tolerance range.

• Inspect the surface quality of the parts for any signs of burrs, cracks, or deformation. Visual inspection and tactile feel can be used for surface quality checks, and if necessary, use magnifying glasses or optical inspection equipment for more detailed examination.

3.2 Final Inspection

• Conduct a comprehensive final inspection of all punched parts before packaging. Use sampling inspection methods for large - volume production, following international standards such as ISO 2859. For example, for a batch of 1000 parts, sample 80 parts for inspection according to the standard sampling plan.

• Check the overall functionality of the parts if applicable. For example, if the punched part is a component of a mechanical assembly, test its fit and operation within the assembly.

4. Material Management

4.1 Raw Material Procurement

• Source high - quality metal materials from reliable suppliers. Establish long - term partnerships with suppliers to ensure consistent material quality. Request material certificates, such as mill test reports, to verify the chemical composition and mechanical properties of the raw materials.

• Optimize the procurement quantity to balance inventory costs and production needs. Use inventory management techniques like Economic Order Quantity (EOQ) to determine the optimal order quantity. For example, if the annual demand for a particular steel sheet is 1000 tons, the cost of placing an order is \(500, and the holding cost per ton per year is \)100, the EOQ can be calculated to determine the ideal order quantity.

4.2 Material Storage

• Store metal materials in a proper environment. Keep them in a dry, well - ventilated area to prevent rust and corrosion. Use racks or pallets to organize the materials for easy access and inventory management. For example, stack steel sheets on pallets and label them clearly with information such as material type, thickness, and batch number.

5. Employee Management

5.1 Training

• Provide regular training for punching machine operators. Train them on machine operation, safety procedures, quality control, and basic maintenance. New employees should undergo an induction training program that includes both theoretical and practical aspects. For example, a new operator should receive at least 40 hours of training on the proper use of the punching machine, safety regulations, and how to identify and correct common quality issues.

• Update the training content regularly to keep up with new technologies, materials, and industry standards.

5.2 Performance Evaluation

• Establish a performance evaluation system for employees. Evaluate operators based on factors such as production output, quality of work, compliance with safety regulations, and machine maintenance contributions. Provide incentives, such as bonuses or promotions, for high - performing employees. For example, an operator who consistently meets or exceeds the production targets while maintaining high - quality work and following all safety rules can be eligible for a quarterly performance bonus.

6. Safety Management

6.1 Safety Equipment

• Ensure that all punching machines are equipped with appropriate safety devices. This includes emergency stop buttons, safety guards to prevent operators from coming into contact with moving parts, and light curtains that detect the presence of hands or other objects in the danger zone. Regularly test and maintain these safety devices to ensure they are in working order.

6.2 Safety Training

• Conduct safety training for all employees involved in the punching production process. Train them on how to identify potential hazards, such as flying debris, electrical risks, and mechanical failures. Teach them proper emergency response procedures, such as how to evacuate in case of a fire or what to do in case of a machine malfunction.

• Post safety signs and guidelines in prominent locations within the production area to constantly remind employees of safety rules.

Our quality control

 

Quality Control Methods in Metal Sheet Punching Parts Production

1. Raw Material Inspection

1.1 Visual Inspection

• Examine the metal sheets for any visible defects such as scratches, dents, or rust. Sheets should have a uniform surface appearance without any signs of oxidation or contamination. For example, stainless - steel sheets should have a smooth, shiny finish, and any discoloration could indicate a potential quality issue.

1.2 Dimensional Verification

• Measure the thickness, width, and length of the metal sheets using precision measuring tools like micrometers, calipers, and rulers. The dimensions should match the specified requirements precisely. For instance, if the required thickness of a steel sheet is 2 ± 0.05 mm, strict measurements must be carried out to ensure compliance.

1.3 Material Testing

• Conduct material - composition analysis using techniques such as spectroscopy. This verifies that the metal sheets contain the correct alloy elements in the specified proportions. For example, for an aluminum alloy sheet, the percentages of elements like copper, magnesium, and silicon need to be within the standard range.

• Mechanical property testing, including tensile strength, yield strength, and hardness tests, can also be performed. Samples are cut from the metal sheets and tested in a materials testing laboratory. The results should meet the industry - standard or customer - specified mechanical properties.

2. Punching Process Control

2.1 Die and Punch Monitoring

• Regularly inspect the punches and dies for wear and damage. Worn - out punches and dies can cause dimensional inaccuracies and surface defects in the punched parts. Use optical inspection tools or magnifying glasses to detect any signs of chipping, cracking, or excessive wear. For example, if a punch tip shows signs of rounding due to wear, it should be replaced immediately.

• Implement a die - cushion control system to ensure consistent pressure during the punching process. This helps in achieving uniform part quality, especially for complex shapes. The pressure settings should be adjusted according to the type of metal sheet and the punching requirements.

2.2 Punching Parameter Optimization

• Monitor and control punching parameters such as punch speed, stroke length, and pressure. These parameters should be optimized based on the material type and thickness of the metal sheet. For example, when punching a thin aluminum sheet, a lower punch speed and pressure may be required to prevent material deformation.

• Use sensors to measure the force exerted during the punching process. Deviations from the normal force range can indicate issues such as incorrect die alignment or material - related problems. The force data can be used to adjust the punching parameters in real - time.

3. In - process Inspection

3.1 Dimensional Inspection

• Use gauges and fixtures to check the dimensions of the punched parts at regular intervals. For example, for a part with a hole diameter of 5 ± 0.03 mm, use a precision - made hole gauge to measure the diameter of every 20 - 30 parts produced.

• Coordinate Measuring Machines (CMMs) can be employed for more complex parts with multiple dimensions. CMMs can accurately measure the length, width, height, and angles of the parts, ensuring that they meet the design specifications.

3.2 Surface Quality Inspection

• Visually inspect the surface of the punched parts for burrs, cracks, and wrinkles. Burrs can be removed by deburring operations, but their presence in large numbers may indicate a problem with the punching process. Cracks and wrinkles are unacceptable as they can compromise the structural integrity of the parts.

• Use tactile inspection methods, such as running a finger along the surface of the part, to detect any irregularities. In some cases, surface roughness measuring instruments can be used to quantify the surface finish of the parts.

4. Final Inspection

4.1 Sampling Inspection

• For large - volume production, follow a sampling inspection plan. International standards like ISO 2859 provide guidelines for determining the sample size based on the batch size and the acceptable quality level (AQL). For example, for a batch of 5000 punched parts with an AQL of 1.5%, the sample size can be calculated according to the standard, and the selected parts are then thoroughly inspected.

4.2 Functionality Testing

• If the punched parts are components of an assembly, perform functionality tests. For example, if the part is a bracket for holding an electrical component, test its fit and the ability to securely hold the component in place. This can involve mock - assembly operations to ensure that the parts function as intended.

4.3 Packaging Inspection

• Inspect the packaging of the punched parts to ensure that they are properly protected during transportation. The packaging should prevent parts from getting damaged, scratched, or contaminated. For example, parts should be individually wrapped in anti - static or protective paper and placed in sturdy boxes with appropriate cushioning materials.

5. Quality Data Analysis

5.1 Statistical Process Control (SPC)

• Use SPC techniques to analyze quality data collected during the production process. Control charts, such as X - bar and R charts for dimensional data, can be used to monitor the stability of the punching process. If data points fall outside the control limits, it indicates a process variation that needs to be investigated.

5.2 Root Cause Analysis

• When quality issues are detected, perform root cause analysis. Tools like the 5 Whys can be used to identify the underlying causes of problems. For example, if there are a high number of parts with incorrect hole positions, asking "Why" repeatedly can lead to the root cause, such as misaligned dies or inaccurate programming of the punching machine.

Company Profile

**Introduction to Zhuji Bosswinn Springs Co., Ltd**

Zhuji Bosswinn Springs Co., Ltd is a leading manufacturer and exporter specializing in high-quality metal springs, CNC machining, and precision metal sheet parts. With a strong commitment to innovation, precision engineering, and customer satisfaction, the company has established itself as a trusted partner in the global industrial and manufacturing sectors.

**Core Services and Expertise:**

1. **Metal Springs Manufacturing:**  
   Bosswinn Springs excels in the production of a wide range of metal springs, catering to diverse industries such as automotive, aerospace, electronics, and machinery. The company's expertise ensures durability, reliability, and performance in every product.

2. **CNC Machining:**  
   Utilizing state-of-the-art CNC machining technology, Bosswinn Springs delivers precision-engineered components with tight tolerances and exceptional quality. Their CNC capabilities include milling, turning, and custom machining to meet specific client requirements.

3. **Metal Sheet Parts Fabrication:**  
   The company specializes in the design and production of metal sheet parts, offering solutions for complex geometries and high-volume production. Their advanced fabrication techniques ensure consistency and precision in every component.

**Featured Products:**

- **Spiral Springs:**  
   Designed for applications requiring consistent torque and energy storage, Bosswinn's spiral springs are engineered for durability and performance in demanding environments.

- **Wave Springs:**  
   These compact and efficient springs provide superior load-bearing capabilities in limited spaces, making them ideal for applications in medical devices, automotive systems, and industrial machinery.

- **Clutch Release Bearings:**  
   Bosswinn's clutch release bearings are precision-engineered to ensure smooth operation and longevity in automotive and heavy machinery applications, enhancing performance and reliability.

**Why Choose Zhuji Bosswinn Springs Co., Ltd?**

- **Global Reach:** As an experienced exporter, Bosswinn Springs serves clients worldwide, delivering products that meet international quality standards.  
- **Custom Solutions:** The company offers tailored solutions to meet unique customer needs, from design to production.  
- **Quality Assurance:** Rigorous quality control processes ensure that every product meets the highest standards of performance and reliability.  
- **Innovation and Expertise:** With a focus on continuous improvement and advanced manufacturing techniques, Bosswinn Springs stays at the forefront of industry trends.

Zhuji Bosswinn Springs Co., Ltd is your trusted partner for precision-engineered metal springs, CNC machining, and metal sheet parts. Whether you need standard products or custom solutions, their team is dedicated to delivering excellence in every detail.

FAQ

1. Is Bosswinn a manufacturer?
   • Answer: Yes, Bosswinn is a manufacturer. The business owner owns 2 factories that are engaged in the production of springs, machining parts, and stamping parts.
2. What is the delivery time?
   • Answer: The typical delivery time ranges from 10 to 15 days. However, during peak seasons, it may take up to one month.
3. What is the minimum order quantity (MOQ)?
   • Answer: For the initial order, there is no strict minimum quantity requirement, so any quantity is acceptable. But for mass - production orders, it is advisable to order 10,000 pieces.
4. What are your payment methods?
   • Answer: We accept payment methods such as T/T (Telegraphic Transfer), L/C (Letter of Credit), and Western Union.
5. How can we obtain and confirm samples?
   • Answer: We offer free samples to help you assess the quality of our products.

 

 

 

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