What conditions do high-quality precision parts machining need to meet

The precision parts machining process and stamping dies should be closely combined with the actual conditions of the factory's machinery, staff, etc. A comprehensive consideration should be made from aspects such as part quality, production efficiency, manufacturing costs, labor efficiency, environmental protection, and manufacturing safety factors to determine and design excellent, economically reasonable, safe, and reliable production technical plans and mold designs. Thus, on the basis of ensuring that the stamping parts meet all technical standards mentioned in the design drawings, the technical cost of stamping production is minimized to the greatest extent, and production safety is guaranteed. Today, Dongguan Ruibang Technology will introduce the necessary conditions for high-quality precision parts machining.

Performance Requirements for Precision Stamping Parts

(1) Standards for Precision Stamping Parts

To meet the precision standards of stamping parts, it is necessary to design and calculate the stamping dies to determine the production process parameters. This is not only because it involves factors such as material properties, drawing height, and the number of drawing steps but also conditions like drawing diameter and material thickness.

(2) Fine Machining Requirements for Stamping Parts

Regarding the fine requirements for stamping parts, the number of processes depends on the complexity of their structural shape. Therefore, it must be determined by comprehensively considering factors such as the number of bending angles, their relative positions, and bending directions.

(3) Aesthetic Standards for Stamping Parts

After the stamping process meets the precision and fineness requirements, the aesthetics of the workpiece becomes a new production process standard. When high requirements are placed on the cross-sectional quality and specifications of stamping parts, consideration can be given to adding a finishing process after the stamping process or directly selecting precision stamping, thereby increasing the value of the refined stamping parts.

Production and Machining Technologies for Two Types of Precision Parts

(1) Part Drawing

The design analysis of parts and stamping dies is based on part drawings. By analyzing basic elements such as the part's shape characteristics, dimensions, precision standards, raw material size, and tensile strength, and using basic elements such as the specifications of existing stamping machines, mold processing conditions, and manufacturing batch size, the stamping process performance of the part is analyzed.

(2) Clarifying Process Planning

On the basis of stamping process performance analysis, standardized analysis of technical parameter calculations is conducted from aspects such as equipment occupancy, difficulty coefficient and service life of mold processing, ease of use, and safety. The characteristics and key points suitable for existing production processes and mold designs are screened out, including process characteristics, number of production processes, process sequence, and composition form, to clarify the appropriate plan suitable for current production standards.

(3) Determining Production Process Parameters

Product technical parameters refer to the data used when formulating process plans, such as various forming coefficients (drawing coefficient, bulging coefficient, etc.), part drawing specifications, and blanking force and forming force. There are two situations in the calculation process: one is that process parameters can be calculated relatively accurately, such as raw material utilization rate during part nesting, blanking pressure center, and workpiece area; the other is that process parameters can only be approximated, such as general bending or drawing forming force, and blank expansion dimensions of miscellaneous parts.

(4) Selecting Stamping Machines

According to the characteristics of the stamping processes to be performed by the stamping machine and the force-energy characteristics of various stamping machines, following specific principles such as the deformation force and deformation work required for forming, the mold closing ratio of height, width, and height, and the overall dimensions, and in line with the company's current mechanical conditions, the machine model and tonnage are reasonably selected.

Selection of Stamping Oil for Precision Parts Machining

Stamping oil plays an important role in the stamping process. Good cooling properties and extreme pressure anti-wear properties are of great significance for extending the service life of the mold and improving workpiece precision.

I. Selection of Stamping Oil for Low-Carbon Steel Plates

When selecting stamping oil for carbon steel plates, the first thing to pay attention to is the viscosity of the drawing oil. The optimal viscosity is determined according to the difficulty coefficient of the production process and degreasing standards.

II. Selection of Stamping Oil for Galvanized Steel Plates

Because it will chemically react with chlorine-based additives, attention should be paid when selecting stamping oil for galvanized steel plates: chlorine-based stamping oil will cause white rust problems, and degreasing should be carried out as soon as possible after stamping.

III. Selection of Stamping Oil for Stainless Steel

Stainless steel is prone to hardening, requiring drawing oil with a high-strength oil film and good anti-sintering performance. Generally, stamping oil containing sulfur-chlorine mixed additives is used to avoid problems such as burrs and cracks on the workpiece and ensure extreme pressure performance.

Fine machining has high precision requirements. Therefore, when selecting a precision parts machining manufacturer, it is necessary to consider the company's comprehensive strength, including production and processing equipment and the overall technical level of operators, to ensure that the workpiece meets the specified requirements.