What is improvement? How does it work, what advantages does it offer? What are the typical applications?
You will learn about this and more in this guide.
Glitan definition
Golf or grinding drawing is a processing process with uncertain geometric cutting blades. This is generally the last step in the production of machine components.
Accustomed to require a high size and precision of form
In addition, it also provides the finest surface.
As a manufacturing process, improvement is closely linked to grinding. Compared to grinding, the surface roughness it produces is even lower.
An example of a typical golf application is the fine processing of the internal combustion engine cylinder.
How does Gue work?
Sparkling tools, grinding knives or polishing brushes press the polished bars encrusted with abrasives on the hole wall.
The synchronous cutting exercise includes a swing movement and a second linear movement. During the positive flow and return period, the exercise believes itself from an angle between 40 and 60 degrees and created a characteristic horizontal section.
The external outline of the tool corresponds to the geometric graphics of the part.
Generally, the perfection belt is made up of a metal nucleus, which has a polished stone in the shape of a prism.
In order to compensate for the wear of the tool, the polished stone is loaded by the spring or the mechanical, hydraulic or pneumatic adjustment. Honahlen uses an armed elastic or pneumatic stone, which can improve the quality of the surface.
In addition, the polished stone which permanently adjusts hydraulics and adjustment can also reduce the differences in shape, such as circularity or cylindricity.
According to the organization and design of the bands refined in sparkling tools, a single steel knife, a three-point system, a four-point system, a multi-steel system, a shell knife, a sharp tool by axis, A process of polishing sleeves or basic sticks.
Precision of success
In the processing and manufacturing process, very high precision and low surface roughness have been obtained.
Possible value:
Tolerance of diameter +/- 0.0005 mm (= +/- 0.5 μm)
Surface roughness is as high as RZ 0.04
Circularity is as high as 0.002
The roundness is as high as 0.001
Abrasive composition
As mentioned above, the abrasive is mechanically linked in the polished bar (sometimes called polite stone). More specifically, the connection is obtained by the electric puppet or the sintering.
Current abrasives are CBN, diamond, silicon carbide (sic) or gangyu (al2o3). Due to its high hardness, diamonds and CBN have a particularly long lifespan, which is the first choice for mass production.[5]
Because the exhausted gathered particles fall from the band in the polishing process, over time, a pointed cutting blade will appear again on the broken blade. This is called the Auto-Sharp effect.
Compared to other ultra-procurement technologies
The significant difference between grinding is a bunk cut exercise because the tool turns and goes up at the same time.
Compared to the line of parallel treatment trace during the grinding process, cross grinding during the rack process continues to produce a lower surface.
In addition, in the perfection process, there is a constant surface contact between the room and the tool.
In addition, the tool is self-confrontation and self-available during the circular and polished process.
The difference in relation to the package
Like grinding, the knife must also adapt with precision to the geometric shape of the room during perfection.
Unlike grinding, the abrasive is separated in the grinding paste alone, and the abrasive in the polished tool is combined mechanically with the Ralaison belt.
What are the advantages and disadvantages?
Superiority
Granny is a grinding competition process. This is a process that can treat different materials. Examples include aluminum, melting, steel, ceramics and plastic. In addition, the process is very reliable. In addition, it can also create functional surfaces with low roughness and large precision.
Due to the flexible suspension of Honahle, confrontation and tightening in the improvement process should not be as precise. Due to the hinge suspension, the knife is aligned with the holes to be treated.
Simply polite work can be done on existing towers or moldings.
The superimposed movement during the perfection process has created a particularly smooth surface. The cross grinking caused by shaving offers a particularly good adhesive base for lubrication oil.
This type of fine treatment increases the proportion of the surface. This is particularly beneficial for sliding bearing, the bearing rolling components, the guide rails and the components of the similar dynamic load machine.
Inconvenience
The drawback is that it is an expensive process that requires complex preparatory treatment. In addition, the pressure constraint is introduced into the room[源]。
example
It is always used when the finest surface and large precision are necessary.
The examples of typical candidacy searches include:
Production of the operating surface of the internal combustion engine cylinder in automotive engineering
Treatment of valve seats and valve catheters of the Diesel pressure injection system co-rail
Treatment of Lianlian bearings
Long route or short route?
The manufacturing process can be divided into two basic forms:
In the long route, the swing movement of the perfection tool generally extends to the length of the entire part to be treated.
On the other hand, during the short route, the tool oscillates to an amplitude of a millimeter. The two methods have their areas of legal application.
Long route
The treatment of the inner surface, such as holes or pipes, generally performs long route methods. Honahle is used as a tool.
Short route
Short schedules are generally used for external shaving.
For example, for small lots and separate production, some tools can be connected to the turn or to the grinding machine, and the oscillating movement of the polished stone required for the process is generated by the pneumatic reader.
By combining the rotation movement and the control of basic tools, this combination makes the treatment tree and other car cut parts possible.
Daguang focuses on providing solutions such as precision CNC machining services (3-axis, 4-axis, 5-axis machining), CNC milling, 3D printing and rapid prototyping services.
