Micro drill and processing method thereof
A micro drill bit and drill tip technology, which is used in metal processing equipment, drill repair, drilling tool accessories, etc., can solve the problems of poor surface roughness and easy damage of the hole wall, improve the surface roughness of the hole wall and reduce cutting The effect of strength and cutting thickness reduction
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] like Figure 4 As shown, the drill tip portion of the drill bit has four cutting edges, which are respectively two first cutting edges 10 corresponding to the flutes 1 and two second cutting edges 20 formed on the first relief surface 12, The second rake face 21 intersects with the second flank face 22 to form the second cutting edge 20, and the second rake face 21 intersects with the first flank face 12. In this embodiment, the second rake face 21 and the first flank 12 are connected by a curved surface, so that the strength of the intersection of the two flanks can be improved, and the curved surface is conducive to the discharge of debris. like Figure 5 As shown, the two second cutting edges 20 respectively intersect with the chisel edge 30 at the apex of the drill point, so that the second rake face 21 is in a triangular shape, so that when drilling, in addition to the extrusion of the chisel edge 30, there are also The cutting effect of the second cutting edge 2...
Embodiment 2
[0035] like Figure 7 Shown is the second embodiment of the present invention, different from the first embodiment, the second cutting edge 20 of the second embodiment does not intersect with the chisel edge 30 at the apex of the drill point, so that when drilling The chisel edge 30 is still in the extruded state, so as to prevent the second cutting edge 20 from participating in drilling extrusion and causing excessive wear. However, the accuracy of the hole position formed by drilling in this solution is lower than that of the solution in Embodiment 1.
[0036] In two embodiments of the present invention, the drill bit is provided with a shovel back, such as Figures 4 to 8 As shown, the setting position of the shovel back corresponds to the second relief surface 22 and extends downward along the flute 1 according to its helix angle.
[0037] Of course, the above two embodiments are the situation where the second cutting edge intersects the chisel edge. According to the ide...
PUM
![No PUM](https://static-eureka.patsnap.com/ssr/23.2.0/_nuxt/noPUMSmall.5c5f49c7.png)
Abstract
Description
Claims
Application Information
![application no application](https://static-eureka.patsnap.com/ssr/23.2.0/_nuxt/application.06fe782c.png)
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap