Author: Site Editor Publish Time: 2023-10-12 Origin: Site
Carbide milling cutter is one of the essential tools in the milling center. It comes in various types and is used for metal processing. According to the processing requirements and the type of workpiece, it can be used for rough machining, intermediate machining and finishing machining.
When the machining quality requirements of a part are high, the three stages of rough machining, intermediate machining and finishing machining must be completed during CNC machining. Roughing and finishing are two different stages in the milling process used to manufacture components or workpieces, each stage has specific goals and machining requirements.
Rough machining is a processing stage that aims to quickly remove a large amount of material to form the required shape. The main purpose is to remove a large amount of margin on the material surface through fast and efficient cutting to achieve the shape and size requirements. This stage is The main purpose is to obtain higher production efficiency.
Basic principles: low speed, high feed, and maximum cutting volume.
Goal: The primary goal of rough milling is to quickly remove most of the material from the workpiece to form a preliminary machined workpiece that is close to its final shape. Rough milling is usually the first step in machining.
Processing requirements: When rough milling, very high surface finish and precision are usually not required. The main goal is to remove material quickly so that the workpiece is close to the desired size and shape, leaving enough for subsequent finishing milling.
Cutting parameters: Rough milling typically uses larger depths of cut and higher feed rates to remove material quickly, but needs to ensure adequate cooling and lubrication to control temperature.
Precautions for rough machining:Cutting parameters, material to be processed, cutting tools, machine tool type and software, lubrication and cooling.
This process is usually carried out after rough machining and semi-finishing to further improve the quality of the workpiece, with the purpose of ensuring that the machined parts meet the specified dimensional accuracy and technical requirements.
Fine milling:
Goal: Finish milling is the machining stage after rough milling, and its main goal is to obtain a final workpiece with high precision, high surface quality and precise dimensions by removing residual material.
Processing requirements: Fine milling requires very high processing accuracy and surface quality. At this stage, the size and shape of the workpiece need to be almost exactly consistent with the design specifications, and the surface quality should be very smooth.
Cutting parameters: Finish milling typically uses smaller depths of cut and smaller feed rates to provide better surface finish and machining accuracy. Cutting speeds may be lower to reduce heat generation.
Precautions for finishing:Desired finish quality, part application, processing costs.
Therefore, the requirements for processing tools are different in the roughing and finishing stages.
The characteristics of precision milling cutters are that they can process high-hardness materials and have good wear resistance. Milling cutters with more blades and smaller tool sizes should be used in semi-finishing and finishing machining, so that the machining process can be precisely controlled and higher precision can be achieved. and surface quality.
In the machining process, the milling cutter is a crucial element. Although Roughing and finishing are both milling processes, the tools used are different. The applicability and limitations of milling cutters can be described by the type of milling cutter (such as flat bottom milling cutter, ball nose milling cutter, round nose milling cutter, etc.) and specifications (such as diameter, angle, number of flutes, etc.).
The main features of roughing milling tools are good wear resistance, high cutting efficiency, and not easy to break the edge during processing. In roughing applications, milling cutters with fewer edges should be selected because they can quickly remove the allowance and improve processing efficiency.
The characteristics of precision milling cutters are that they can process high-hardness materials and have good wear resistance. Milling cutters with more blades and smaller tool sizes should be used in semi-finishing and finishing machining, so that the machining process can be precisely controlled and higher precision can be achieved. and surface quality.
