CNC processing method: CNC drilling

author: Universe plastic

2024-08-28

Drilling in CNC machining is one of the most common operations. A computer numerical control (CNC) system controls the movement and rotation of the drill bit to accurately machine holes in the workpiece.

CNC machine tools can automatically perform drilling operations according to programmed instructions without manual intervention. With its high precision and automation advantages, it is widely used in various fields of manufacturing industry.

CNC drilling steps

1. Programming

Write a CNC program based on the design drawings to define the location, depth, diameter and processing path of the drilling.

2. Clamp the workpiece

Fix the workpiece on the workbench of the CNC machine tool to ensure stability and accuracy.

3. Select drill bit

Select the appropriate drill bit according to the size and material of the hole and install it on the machine tool spindle.

4. Processing settings

Set appropriate spindle speed, feed rate and cutting parameters.

5. Execute drilling

Start the CNC program, and the machine tool automatically performs drilling operations according to the instructions.

Drilling type

1. Blind hole

The hole depth does not penetrate the entire workpiece and usually leaves a certain margin at the bottom.

2. Through hole

The hole completely penetrates the workpiece.

3. Step hole

The diameter of the hole changes along the depth direction, forming steps of different diameters.

4. Threaded hole

Drilling is followed by tapping to create threaded holes for the assembly of bolts or screws.

CNC drilling material

1. Metal materials

Aluminum, steel, copper, brass, stainless steel, etc. Select appropriate drill bits and cutting parameters based on material hardness.

2. Non-metallic materials

Such as plastic, wood, composite materials, etc.

Characteristics of CNC drilling

1. High precision

CNC machine tools have extremely high positioning accuracy and repeatability, ensuring precise hole location and size.

2. High degree of automation

CNC processing does not require manual intervention, which greatly improves production efficiency and is especially suitable for mass production.

3. Versatility

CNC machine tools can not only drill holes, but also perform milling, tapping and other operations, completing multiple processes on the same equipment.

Points to note when drilling CNC holes

1. Tool wear

When processing hard materials or running for a long time, the drill bit will wear and need to be replaced or ground regularly.

2. Chip removal

In deep hole drilling, poor chip removal may lead to drill bit breakage or reduced machining quality, requiring the use of coolant or a more suitable chip removal method.

3. Hole position accuracy

For hole processing that requires extremely high precision, the clamping method of the workpiece and the accuracy of the machine tool need to be considered.

4. Cooling and lubrication

During the drilling process, especially in the processing of high-hardness metals or large-diameter deep holes, the use of coolant is very important. Coolant can help remove chips, reduce friction, and lower temperatures, thereby extending drill life and improving machining quality.

CNC drilling application areas

1. Mechanical manufacturing: such as hole processing of engine blocks, transmission parts, etc.

2. Aerospace: high-precision hole processing, used in the manufacturing of structural parts and connectors.

3. Mold manufacturing: guide pillar holes, cooling water holes, exhaust holes, etc. on the mold.

4. Electronic industry: Hole processing on PCB boards for component installation.

Summarize

CNC drilling processing method has become an indispensable part of modern manufacturing due to its high precision, high efficiency and strong adaptability. Depending on the specific processing requirements, different drilling strategies and tools can be selected to achieve the best results.

Dongguan Universe Plastic Factory has a professional team, advanced CNC processing equipment, and more than 15 years of processing experience, and can provide various CNC processing and manufacturing services.

If you are looking for professional CNC machining services, please contact us to get the latest service information.

CNC processing method: milling

Injection mold structure: exhaust hole