Title:
BACK-DRILLING CUTTER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/062041
Kind Code:
A1
Abstract:
A back-drilling cutter and a preparation method therefor. The back-drilling cutter comprises a handle (1) and a blade (2), wherein the blade (2) comprises a cutter body (21), a boss (22) and a tip (23) which are sequentially connected; the cutter body is connected to the handle; both the maximum diameter of the tip and the diameter of the cutter body are less than the diameter of the boss; and outer surfaces of the tip and the cutter body are not electrically conductive, but an outer surface of the boss is electrically conductive. During processing, an electric path is formed by the boss and an inner layer of a workpiece and is used to transmit signals, such that the hole depth can be accurately controlled and the processing efficiency and processing accuracy can be improved.
Inventors:
ZHENG XIN (CN)
CHEN HANQUAN (CN)
CHEN HANQUAN (CN)
Application Number:
PCT/CN2020/124004
Publication Date:
March 31, 2022
Filing Date:
October 27, 2020
Export Citation:
Assignee:
GUANGDONG DTECH TECH CO LTD (CN)
International Classes:
B23P15/32; H05K3/42
Foreign References:
| CN210059916U | 2020-02-14 | |||
| CN104057124A | 2014-09-24 | |||
| CN106961798A | 2017-07-18 | |||
| CN104354189A | 2015-02-18 | |||
| US20190159346A1 | 2019-05-23 | |||
| JP2018018963A | 2018-02-01 | |||
| CN208940261U | 2019-06-04 | |||
| CN105848427A | 2016-08-10 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
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