1. WO2026174385 - ROCK DRILL BIT SHARPENING SYSTEM WITH OUTRUNNER MOTOR AND VESC CONTROLLER

Publication Number WO/2026/174385

Publication Date 27.08.2026

International Application No. PCT/CA2026/050252

International Filing Date 18.02.2026

Chapter 2 Demand Filed 21.07.2026

IPC

B24B 3/24 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
3	Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
24	of drills

B24B 3/33 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
3	Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
24	of drills
33	of drills for stone

B24B 47/22 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
47	Drives or gearings for grinding machines or devices; Equipment therefor
22	Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

E21B 10/56 2006.1

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10	Drill bits
46	characterised by wear resisting parts, e.g. diamond inserts
56	Button-type inserts

E21B 12/00 2006.1

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
12	Accessories for drilling tools

B24B 3/24 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
3	Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
24	of drills

B24B 3/33 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
3	Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
24	of drills
33	of drills for stone

B24B 47/22 2006.1

B	PERFORMING OPERATIONS; TRANSPORTING
24	GRINDING; POLISHING
B	MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
47	Drives or gearings for grinding machines or devices; Equipment therefor
22	Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

E21B 10/56 2006.1

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10	Drill bits
46	characterised by wear resisting parts, e.g. diamond inserts
56	Button-type inserts

E21B 12/00 2006.1

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
12	Accessories for drilling tools

View less classifications

Applicants

• C.M.E. BLASTING & MINING EQUIPMENT LTD. [CA]/[CA]

Inventors

• SJOLANDER, Bo Thomas
• SJOLANDER, Bjorn

Agents

• CARSON, James
• HOLBECHE, Kevin

Priority Data

3265477

19.02.2025

CA

Publication Language English (en)

Filing Language English (en)

Designated States

View all

AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CV, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, MG, MK, MN, MU, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UY, UZ, VC, VN, WS, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, CV, GH, GM, KE, LR, LS, MU, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

Hide all

Title

(EN) ROCK DRILL BIT SHARPENING SYSTEM WITH OUTRUNNER MOTOR AND VESC CONTROLLER

(FR) SYSTÈME D'AFFÛTAGE DE TRÉPAN DE FORAGE DE ROCHE DOTÉ D'UN MOTEUR À ROTOR EXTERNE ET D'UN CONTRÔLEUR VESC

Abstract

(EN) A rock drill bit sharpening system is disclosed, designed to enhance torque and power efficiency for sharpening carbide button inserts, including those with polycrystalline diamond (PCD) enhancements. The system integrates an outrunner motor and a VESC motor controller to address the technical problem of maintaining performance in compact applications. The control system communicates with the VESC motor controller to adjust operational parameters, offering flexibility with power sources ranging from 24-48 VDC or 100-260 VAC. The system includes an RFID reader for precision control and Wi-Fi connectivity for remote monitoring. This system is particularly useful for mobile and compact sharpening applications, providing performance levels typically associated with larger machines. The resharpening machine features a modular design for easy component replacement, enhancing the system's adaptability and efficiency in various operational environments.

(FR) L'invention divulgue un système d'affûtage de trépan de forage de roche, conçu pour améliorer le couple et l'efficacité énergétique pour l'affûtage d'inserts-bouton en carbure, y compris ceux dotés d'améliorations en diamant polycristallin (PCD). Le système intègre un moteur à rotor externe et un contrôleur de moteur VESC pour résoudre le problème technique de conservation des performances dans des applications compactes. Le système de commande communique avec le contrôleur de moteur VESC pour ajuster des paramètres opérationnels, offrant une flexibilité avec des sources d'alimentation allant de 24 à 48 VCC ou de 100 à 260 VCA. Le système comprend un lecteur RFID pour un contrôle de précision et une connectivité Wi-Fi pour une surveillance à distance. Ce système est particulièrement utile pour des applications d'affûtage mobiles et compactes, fournissant des niveaux de performance typiquement associées à de plus grandes machines. La machine de reaffûtage présente une conception modulaire pour un remplacement aisé des composants, améliorant l'adaptabilité et l'efficacité du système dans divers environnements opérationnels.

Latest bibliographic data on file with the International Bureau

The publication of an international application under the Patent Cooperation Treaty in PATENTSCOPE (which constitutes an element of the Gazette) does not imply the expression of any opinion whatsoever on the part of the International Bureau of WIPO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.