Brake discs are an important part of the car, and their product quality determines the braking performance and driving safety factor. There are two machining processes for brake discs, turning and grooving. This article focuses on which blade to choose for the grooving process.
Since brake discs are now mass-produced, with the development of modern technology, more brake discs are produced by automatic lines or brake disc machines, which have high requirements for production efficiency and production beats, so more CBN tools are used for processing and grooving processes No exception, choose CBN groove inserts to process brake disc groove.
Halnn tools, as a pioneer in the localization of superhard cutting tools in China, relies on the National Key Laboratory of Superhard Materials and Henan University of Science and Technology, and has its own research and development center for superhard cutting tools, focusing on the processing of brittle and hard materials and difficult-to-cut materials. The research direction of cubic boron nitride tools and high-grade diamond has unique advantages in subdivided fields such as turning instead of grinding, ultra-high hardness and heavy-duty cutting, high-speed machining, and cutting of difficult-to-machine materials. At the same time, according to the innate resources of Henan Institute of Superhard Materials, CBN/PCD tools, and other new material tools are constantly being introduced in the fields of automobile manufacturing, energy equipment, iron and steel metallurgy, and aerospace. Users cover mainland China, Taiwan, Germany, and Italy. , the United States, South Korea, Japan and other countries and regions.
In the brake disc grooving process, Halnn can provide groove tools with two structures for customers to choose, the details are as follows:
1. Halnn tools CBN Welding Grooving inserts
There are two types of Halnn superhard CBN welding grooving inserts for customers to choose from. One type of cutting edge is flat, which is represented by MGGN, and the other type of cutting edge is round, which is represented by MRGN. The specific specifications and dimensions are as follows:
Drawing | Order Code | Cutting Edges | Dimension（mm） | Picture |
W | R |
| MRGN200-R1.0 | 1, 2 | 2 | 1.0 | 
|
MRGN300-R1.5 | 1, 2 | 3 | 1.5 |
MRGN400-R2.0 | 1, 2 | 4 | 2.0 |
MRGN500-R2.5 | 1, 2 | 5 | 2.5 |
MRGN600-R3.0 | 1, 2 | 6 | 3.0 |
| MGGN200-02 | 1, 2 | 2 | 0.2 | 
|
MGGN250-02 | 1, 2 | 2 | 0.2 |
MGGN300-02, 04, 08 | 1, 2 | 3 | 02, 04, 08 |
MGGN400-02, 04, 08 | 1, 2 | 3 | 02, 04, 08 |
MGGN500-02, 04, 08 | 1, 2 | 3 | 02, 04, 08 |
MGGN600-02, 04, 08 | 1, 2 | 4 | 02, 04, 08 |
Note: Grooving Inserts and corresponding tool holder can be offered based on the dimension requirements, please fill the following form, then you can obtain the solutions and the quotation. About selected the insert materials, you can consult our engineer.
Shape | Item | Content |
| Blade Width CW（mm） |
|
Blade Radius R（mm） |
|
Machining Materials |
|
Groove Depth H（mm） |
|
Machining Part | a. Cylindrical Groove b. Internal Groove c. Endsurface Groove |
Tool Holder Length*Square（mm） |
|
2. Halnn CBN solid grooving inserts
Some welded CBN grooving inserts may have the problem of chipping when the brake disc is grooved, or the blade may be desoldered, which may easily cause the brake disc to be scrapped. Therefore, Halnn has innovated and developed CBN solid grooving inserts. The welding form has been transformed into a finishing structure form, which is not only suitable for rough machining but also can realize groove digging without chipping, and has been widely used at present.
This type of CBN grooving insert needs to be used with a professional tool holder, which is different from the cutter holder for welding CBN groove inserts.
