WHAT STEPS INCLUDED THE PRECISION MECHANICAL PROCESSING PROCESS?

1. What is the precision mechanical processing process?
Precision machining is the process of removing excess raw material from a work piece. At the same time, keep products 
with close tolerances, to create a finished product.
Simply put, it means shaping large pieces of material into more precise parts. So that they can meet the exact 
specifications. This process may include cutting, milling, turning and discharge machining. They are typically 
made using numerical control machines called CNC machines.
In order for the precision machining process to take place smoothly and quickly, it is necessary that they 
conform to the designs accurately. Specifically, this machining process is performed by computer-aided design (CAD) 
or computer-aided machining (CAM) programs.
This state-of-the-art CNC machining technology creates the 3D diagrams or sketches needed to create a certain product.
 Be it a machine, an object, a device or a tool, the blueprints must be created in great detail to ensure the 
quality and accuracy of the finished product.

2. Commonly used materials for precision machining
Precision mechanical processing can create products from a variety of materials including:
• Metal.
• Synthetic materials.
• Steel.
• Copper.
• Lead.
• Glass.
• Plastic.
• Ceramic.
…
To make precise cuts and remove raw material as desired, the operator can use a combination of different machines 
depending on the type of raw material. These include milling machines, lathes, electric dischargers (also known as EDMs), 
saws and grinders.
These machines are computer controlled and are designed and used to remove background material. They create parts and 
details that are large, small, thick or thin depending on the technical requirements in the design.
In some cases, high-speed photochemical and robotic processes can even be used to achieve the desired results for 
the final product.

3. Precision mechanical processing process with 9 basic steps
In precision mechanical machining, also known as CNC mechanical machining, the process includes 9 basic steps as follows:
3.1. Check design data
The designer will consider and check parameters such as:
• Product dimensions.
• Shape.
• Product gloss.
• Type of workpiece material.
…

3.2. Design drawings and set up machining programs
Step 2 of the precision mechanical machining process is to study each part in detail and design mechanical engineering 
drawings. Parameters must be guaranteed to be properly classified according to technical requirements.
Proceed to set up standard CNC program control. CAM programs are checked manually or by computer to detect errors.

3.3. Determine the processing method
Currently, the precision mechanical machining process is performed with 3 popular methods:
• Single processing of each mechanical product
Single-piece processing is usually applied to production processes with low annual output from a few to several dozen 
products and no re-production cycle. The product received is meticulously processed and has high precision.
• Processing a series of mechanical products
This method is the opposite of the above method. The quality of the returned products is not high quality. It is a 
suitable production method for products with large annual output and often batched and definite cycles.
• Mass processing of mechanical products
This method is often applied to products with large output. Products are manufactured continuously and for a long time.

3.4. Select workpiece and proceed with fabrication
Select workpieces that match product requirements. Depending on the product size, choose the appropriate size workpiece.
3.5. Determine the order of processing execution
The operation needs to be precisely determined from the determination of the tool type, the tool order and the tool 
setting to be performed according to the standard regulations.
3.6. Select suitable precision machinery and machining equipment
Depending on the machining needs and accuracy requirements, the operator must choose the appropriate machining equipment.
3.7. Determine the amount of machining residue at each step
At each step of the process, a residual amount of machining is removed. The operator will use it to compare the 
estimated residual and the actual residual to compare the accuracy of the product.
3.8 Carry out precise mechanical machining procedures
In this step, the machining process will be conducted including rough machining and finishing stages. It can be rough 
milling - fine milling, rough turning - fine turning,...

3.9. Check product quality
Recheck product dimensions and compare with original processing requirements. Using measuring tools such as calipers, 
calipers, templates, micrometers, dial gauges, etc.
4. Advantages of precision mechanical processing
As one of the most popular forms of machining today, CNC machining is preferred by the vast majority of business 
owners and workshops because they bring many advantages such as:
• Ensure products are manufactured with high precision and in accordance with technical requirements.
• Can process almost all materials, even high hardness and complex materials.
• Ensure processing productivity.
• The process can be saved, convenient for later processing work.
• Helps shorten time and save costs for businesses.

The precise mechanical machining process is carried out on modern CNC machines, controlled by pre-programmed commands 
on the computer, bringing many outstanding advantages. Operators only need to observe and monitor the machining process 
without directly performing operations. Therefore, it does not affect the product accuracy and protects the safety of workers.
All steps need to be carried out methodically and step by step to ensure operations take place accurately and quickly.
 As well as creating quality products by the right precision mechanical processing .