Title:
DRILLING BLADE, DRILLING DEVICE, IMAGE FORMATION DEVICE, AND POST-PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/225042
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce the load during drilling and to reduce the duration of drilling. A drilling blade (7) is provided with a blade edge part (72) having a plurality of peaks (721) and a plurality of valleys (722) formed alternately in the circumferential direction. A blade edge line (73) of the blade edge part (72) comprises a first region (731) corresponding to the valley (722), a second region (732) going from the peak (721) toward the valley (722), and a third region (733) linking the first region (731) and the second region (732). In side view of the blade edge part (72): the first region (731) forms a curve running along a first arc (741) that has the center at a point on a drilling axis (7A); the second region (732) forms a curve running along a second arc (742) that has the center at a point in a region between the vertex (7211) of the peak (721) and the drilling axis (7A); and the third region (733) forms a straight line running along a tangent common to the first arc (741) and the second arc (742).
Inventors:
OKADA RINA (JP)
Application Number:
PCT/JP2021/012160
Publication Date:
November 11, 2021
Filing Date:
March 24, 2021
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC (JP)
International Classes:
B26F1/14; B26F1/34; B65H37/04
Domestic Patent References:
| WO2006038291A1 | 2006-04-13 | |||
| WO2013018428A1 | 2013-02-07 |
Foreign References:
| JP2012056040A | 2012-03-22 | |||
| US20050056133A1 | 2005-03-17 |
Attorney, Agent or Firm:
TANEMURA Kazuyuki et al. (JP)
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