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Aug 3,2022

The Principle and Process of Processing Precision Metal Parts

Precision metal parts are created through a labor-intensive manufacturing process that involves cutting and shaping various pieces of metal. The steps involved in this process can be grouped into three main categories: stock preparation, machining, and finishing.

The first step in the processing of precision metal parts in stock preparation. In this phase, the desired position is Rough Cut Pieces (RCPs). RCPs typically come from a large block of metal trimmed to an appropriate size and shape by a metal cutting machine.

Machining is the next stage in the processing of precision metal parts. In machining, pieces of metal are cut or shaped using a tool to remove material. Machining can be performed using a variety of different techniques, including CNC (computer numerical control) machines and manual machines.

Finishing is the final step in processing precision metal parts, and it involves completing any necessary finishing touches, such as adding corrosion-resistant coatings or engraving details.

Five principles for processing precision metal parts

The principle of precision

Precision in processing precision metal parts is critical for achieving optimal results. Errors in the machining process can lead to poor finish quality or defects in the region, while errors in the dimensions of an RCP can affect its fit and performance.

The Principle of Consistency

To ensure consistent results across multiple parts, it is essential to maintain a high level of precision throughout the manufacturing process. This means ensuring that all tools and methods used are consistently accurate and following standard manufacturing procedures and guidelines.

The principle of Quality

To achieve the mximum level of Quality, it is essential to test and inspect parts before they are released for sale or use. This allows for early detection of potential problems – ensuring that customers receive goods that meet their expectations.

The principle of Corrective Action

If errors occur, it is essential to take corrective action as soon as possible to restore the Quality of the product. This may involve changing the manufacturing process or retooling specific tools and equipment.

The principle of Scalability

Precision metal parts can be produced in large quantities using standard production methods and equipment. This means that companies can quickly and easily expand their production capabilities without making significant investments in new technology or infrastructure.

In order to minimize machine variability, special attention must be paid to process planning and execution sequences as much as possible in coordination with other machines within the assembly line. In addition, machining parameters should be standardized for better utilization across machines on an assembly line, thereby minimizing setup time and improving part quality.

 

Several commonly used stamping processes for processing metal parts.

Punching

Punching is a simple, fast, and economical process used to create metal parts by forcing metal through a small hole called a die. The punched piece receives the shape of the dies, which can be rounded or angular.

Milling

Milling is a more advanced form of stamping that uses rotary cutting machines to create cylindrical parts from flat pieces of metal stock. Using multiple sets of rotating cuts, millers can produce parts with complex shapes and angles.

Shearing

Shearing is a process that cuts metal along the grain, making it rigid and brittle. It's used to create parts with specified shapes, including those with intricate details or contours.

Electroforming

Electroforming is a specialized form of stamping that uses an electric current to shape metal into complex three-dimensional objects using dielectric liquid media as an etching agent. This process is often used in the production of high-value electronic components.

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