Adjustable high-precision combined reamer

Abstract

The invention relates to an adjustable high-precision combined reamer. The adjustable high-precision combined reamer comprises a cutter bar, a cutter head and a connecting rod, during use, fastening screws are matched with the outer surface of the connecting section of the cutter bar in an abutting mode so that the cutter bar can be connected with the connecting rod, and fine adjustment of the coaxiality of the cutter head and the cutter bar can be achieved by adjusting the fastening screws. The combined reamer not only has the characteristic of high precision of an integral type reamer head, but also has the characteristics of economy, practicability and convenience in replacement of a split type reamer head, and the reamer bar can adjust the coaxiality between the whole reamer and a reamer handle of equipment and the coaxiality between the reamer head of the reamer and the reamer bar; and in addition, the reamer head is provided with the eight blades, the more the blades are, the higher the cutting efficiency is, the included angles among the eight blades are different, and the eight blades are of an extremely asymmetric structure in the rotation field, so that the asymmetry enables the centripetal force to be better during high-speed rotation, and a better cutting effect is achieved.

Description

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AI Technical Summary

Benefits of technology

The technical effect of this new design described in the current version of the tool has several benefits compared to previous designs. Firstly it allows replaceability or replacement of expensive tools without affecting their performance, resulting in improved economic efficiency while maintaining good quality products. Secondly, there're no extra components needed like cams but instead just connectors at both ends of the drill bit. This eliminates the need for precise alignment during assembly, reduces errors due to misalignments, ensures accurate concentricities, enhances manufacturing tolerance, prevents damage from external sources (such as vibrating), and provides greater stability when rotated around axis. Thirdly, multiple sets of threads provide secure connections and stabilization. Overall these innovative feature results in better cost-effectiveness, reduced size, and increased productivity.

Problems solved by technology

Technologies described in the technical solution presented in this patents involve improving the performance and durability of tools while reducing their size and weight. One approach involves integrally forming blades made of different metals together instead of individually attaching them onto the toolholder. However, these techniques have limitations like requiring expensive equipment and long downtime periods before replacing damaged parts. Another method called grinding requires frequent replacement of entire tools, but current methods require multiple steps involving removing some components after milling. Additionally, existing solutions suffer from issues including difficulty achieving precise dimensions without excessive maintenance costs.

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