Drilling tool penetrating hole puncher
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 巩汝轩
- Publication Date
- 2019-02-22
- Estimated Expiration
- Not applicable · inactive patent
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Figure 1
Abstract
Description
technical field
[0001] The invention relates to the technical field of punching instruments, in particular to a drilling tool piercing and punching device. Background technique
[0002] Generally, most of the hole openers in the prior art commonly used in daily life adopt a hinge structure, such as the hole opener for paper pages adopts the hinge form, and the belt belt hole opener adopts the form of hand-held pliers. The torque of this type of hole saw is mostly based on the lever principle of the body design to realize the hole opening action. Its short moment arm and small torque can provide limited hole opening force, and in many cases it cannot meet the needs of hole opening, or even complete the hole opening action, and cannot completely open the hole. Contents of the invention
[0003] The technical task of the present invention is to solve the deficiencies of the prior art, and provide a drilling tool piercing and punching device.
[0004] The technical solution ...