The heading workshop is the first core forming process in the production of hardware products (such as screws, bolts, rivets, pins, etc.), also known as the "cold heading workshop" or "forging forming workshop". Its core
task is to efficiently and precisely process the head and shank prototypes of various fasteners and hardware parts from coil stock (wire rod) through cold heading forging technology at room temperature.
I. Core leasing and importance of the workshop:
1. Forming and foundation: It determines the basic dimensions of the product (such as screws), including the head shape (round head, flat head, hexagonal head, hexagonal socket, etc.), the diameter and length of the
shank.
2. Efficiency Core: Utilizing a multi-station cold heading machine, the production efficiency is extremely high, capable of producing hundreds of products per minute, making it a core link in mass production.
3. Material saving: It belongs to the cold processing technology with little or no cutting, and the material utilization rate can reach over 95%, which is much higher than that of turning processing, greatly reducing the
cost of raw materials.
4. Quality foundation: Through cold forging deformation, the flow direction of metal fibers is continuous and complete, enhancing the mechanical strength, surface smoothness, and wear resistance of the product
II. Workshop management and quality control:
1. Safe production: Due to the large tonnage and loud noise of the cold heading machine, it is necessary to strictly adhere to safety operating procedures, such as wearing earplugs and strictly prohibiting bare-handed
contact with moving parts.
2. First article inspection: When each batch of products is put into production, the dimensions of the first article (such as head diameter, head thickness, rod diameter, and length) must be measured. Batch production
can only proceed after the first article is confirmed as qualified.
3. Process inspection: Quality control personnel need to conduct regular spot checks on product dimensions and appearance (for cracks, scratches, skewed heads, etc.), and monitor whether the equipment operating
parameters are stable.
4. "6S" management: Good on-site management (organization, rectification, cleaning, sanitation, etiquette, and safety) is the foundation for ensuring efficient and high-quality production.
The CCD workshop, commonly referred to as the "Optical Vision Inspection Workshop" or "AI Quality Inspection Workshop", is tasked with utilizing machine vision technology to replace human eyes in conducting high-speed,
high-precision full-appearance dimensional inspection of hardware products (such as screws, nuts, bolts, and precision hardware components), ensuring zero defects in the quality of outgoing products.
I. The core role and importance of the workshop
1. Quality guardian: It is the last and most important quality checkpoint before the product leaves the factory. It can detect minor defects that are difficult for human eyes to detect stably and continuously.
2. Efficiency revolutionizer: With extremely fast detection speed, it can inspect hundreds or even thousands of parts per minute, far exceeding the efficiency of manual inspection and meeting the high-speed pace of
automated production lines.
3. Data Brain: It not only determines whether products are "qualified" or "unqualified", but also records, compiles, and analyzes quality data in real time, providing precise insights for optimizing production processes (e.g.,
which machine produces more defective products? Which type of defect has the highest proportion?).
4. Cost Saver: Despite the high initial investment in equipment, in the long run, it significantly reduces labor costs, avoids customer complaints and return losses due to missed inspections, and achieves cost reduction and
efficiency improvement.
II. Workshop Management and Technical Key Points
1. High-precision calibration: Equipment needs to be calibrated regularly to ensure measurement accuracy (typically, the accuracy can reach ±0.01mm or even higher).
2. Program setting and debugging: For products of different specifications, engineers need to set up brand-new detection programs, tolerance ranges, and camera parameters in the software. This is the core of the technology.
3. Light source stability: The workshop environment should maintain stable lighting to avoid interference from external light. The stability of the equipment's light source is crucial and requires regular maintenance.
4. Data-driven management: The focus of workshop management has shifted from "managing people" to "managing data". By monitoring equipment operation status and production yield through real-time data dashboards,
intelligent decision-making is achieved.
5. Environmental requirements: A constant temperature and humidity, dust-free environment is usually required to ensure the stability and detection accuracy of optical equipment.
The thread rolling workshop receives the "smooth nails" (i.e., rod blanks with formed heads but without threads) from the heading workshop, and through plastic deformation, cold-rolls threads that meet the standards.
This is a crucial step in imparting the fastening function to screws.
I.The core role and importance of the workshop
1. Function endowment: Threads are the core functional structure for screws to achieve tightening, connecting, and fixing, and the thread rolling process directly determines the quality of this function.
2. Accuracy guarantee: The accuracy of threads (such as pitch, pitch diameter, thread angle) must comply with international standards (such as ISO, GB, DIN, ANSI), otherwise it will lead to problems such as poor fit between
screws and nuts, thread slipping, and insufficient torque.
3. Strength enhancement: Compared to cutting threads, rolling threads enhances the strength and wear resistance of threaded parts by maintaining the continuity and integrity of metal fibers through the cold work
hardening effect.
4. Efficient production: The adoption of automated thread rolling machines results in extremely high production efficiency, which, together with the head forming machines, forms a "high-speed assembly line" for fastener
production.
II. Workshop Management and Characteristics
1. High-noise environment: The rolling process generates significant noise, making it a major source of noise pollution in factories. It is essential to provide employees with high-performance protective earplugs or earmuffs.
2. High automation: The workshop typically has fewer employees, mainly consisting of equipment operators and commissioning personnel, who are responsible for loading and unloading materials, adjusting machines, and
conducting quality spot checks.
3. Strong technical dependence: The installation, debugging, and maintenance of the thread rolling plate require experienced technical personnel, and the level of debugging directly determines product quality and
production efficiency.
The lathe workshop is the core department for achieving high-precision and complex shape parts processing in hardware manufacturing. Unlike workshops that focus on large-scale, standard parts production such as
heading and thread rolling, the lathe workshop places more emphasis on small-scale, multi-variety, high-precision customized product processing.
I.Core role and positioning of the workshop
1. Precision Manager: Responsible for processing hardware components that require extremely high dimensional accuracy, geometric tolerances, and surface finish.
2. Complex shape machining: Capable of producing complex structural parts that cannot be completed through processes such as cold heading and stamping, such as parts with inner holes, stepped shafts, tapers, and
irregular contours.
3. Customization and flexible production: It is the main force for small batch customization orders, sample trial production, and fixture manufacturing, with strong production flexibility.
4. Full-process supplementation: As a supplement to processes such as heading and cold heading, responsible for completing subsequent finishing processes that cannot be achieved by these techniques, such as drilling,
tapping, grooving, and precision turning of the outer shape.
II. Workshop Management and Technical Key Points
1. Programming and technical core: The core competitiveness of the workshop lies in the technical proficiency of CNC programming engineers and debuggers, as they determine the rationality, efficiency, and cost of the
machining process.
2. Precision and quality management: Strictly implement the initial inspection, in-process inspection, and final inspection systems. For high-precision parts, it is necessary to use equipment such as three-coordinate
measuring machines in a testing room with constant temperature and humidity for measurement.
3. Tool management: The cost of tools accounts for a relatively high proportion, necessitating scientific tool management, including life management, grinding, and procurement planning.
4. "6S" management: Due to the generation of a large amount of metal shavings and oil contamination during cutting, maintaining a clean workshop and well-maintained equipment is crucial, serving as the foundation
for safety and quality.
The core task of the spring workshop is to process steel wires (or strips) of various materials into precision parts with desired elastic properties through a series of processes such as winding and heat treatment.
I.The core role and importance of the workshop
1. Function realization: The produced products are core components that fulfill key functions such as cushioning, shock absorption, resetting, energy storage, and pressure control.
2. High precision requirement: The mechanical properties of the spring (such as force value, stiffness, and free length) must be highly stable and precise, otherwise it will lead to the failure of the entire product.
3. Integration of materials and processes: It heavily relies on a profound understanding of material properties, heat treatment, and surface treatment techniques.
4. Diversified production: There is a wide range of products, from tiny electronic device springs to large heavy-industry springs, with significant differences in production processes and equipment.
II. Workshop Management and Technical Key Points
1. Materials science is crucial: The elastic modulus, ductility, and heat treatment characteristics vary among wires made of different materials, necessitating corresponding adjustments to process parameters.
2. Process debugging and experience: Debugging a spring coiling machine is a technical task that requires engineers to precisely set machine parameters (such as wire feeding length, pitch, and angle) based on drawings and
material characteristics, and to conduct repeated testing and correction.
3. Heat treatment process control: The temperature, time, and atmosphere inside the furnace during tempering directly affect the final performance of the spring, and must be strictly controlled.
4. Whole-process quality control: From the incoming inspection of wire diameter, to the first article inspection (requiring the use of a spring testing machine), to the in-process patrol inspection, the requirements are extremely
high. The performance of the spring cannot be judged by the naked eye and must rely on equipment testing.
5. Environment and Safety: Metal debris may be generated during wire cutting and spring grinding, thus dust removal measures must be taken; high-temperature protection measures must be taken for heat treatment
equipment.
The core task of a CNC workshop is to utilize precision machine tools controlled by pre-programmed computers to perform material reduction processing on metal materials (such as aluminum, copper, stainless steel, steel,
titanium alloys, etc.). Through cutting, drilling, milling, and other methods, raw materials (blanks) are precisely manufactured into complex and precise hardware components.
I.The core role and positioning of the workshop
1. Solutions for complex parts: Responsible for processing complex three-dimensional shapes, precision cavities, and irregular structural parts that cannot be manufactured through traditional processes such as stamping, cold
heading, and casting.
2. High precision and high consistency: CNC machining accuracy can reach the micrometer level (μm), and once the program is debugged, it can stably produce thousands of identical parts for a long time.
3. The king of prototype and small-batch production: It is highly suitable for sample trial production of new products, mold manufacturing, and production of small to medium-sized orders. Switching products only requires
changing the program, providing extreme flexibility.
4. One-stop machining: Modern multi-axis CNC machines, such as five-axis machining centers, enable "one-time setup for all machining tasks," significantly enhancing precision and efficiency.
II. Workshop management and technical points
1. Technology-intensive: The core competitiveness of the workshop lies in the knowledge and experience of programming engineers, process engineers, and senior technicians.
2. Lean production: Emphasize on optimizing processing paths and techniques, reduce processing time and tool wear, and lower the cost per unit.
3. Tool management: Implement scientific tool lifecycle management to balance machining efficiency, surface quality, and tooling costs.
4. Total Quality Management: Establish a comprehensive quality control system encompassing programming simulation, initial article inspection, and in-process patrol inspection.
5. Automation and intelligence: They are the core of implementing "Industry 4.0" and "Smart Factory". Through the DNC system, all machine tools are managed online, and equipment status and production data are
monitored in real time, achieving unmanned production.