CA2404156A1 - Grinding tool for buttons of a rock drill bit - Google Patents

Grinding tool for buttons of a rock drill bit Download PDF

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Publication number
CA2404156A1
CA2404156A1 CA002404156A CA2404156A CA2404156A1 CA 2404156 A1 CA2404156 A1 CA 2404156A1 CA 002404156 A CA002404156 A CA 002404156A CA 2404156 A CA2404156 A CA 2404156A CA 2404156 A1 CA2404156 A1 CA 2404156A1
Authority
CA
Canada
Prior art keywords
grinding
section
upper body
cup
body section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002404156A
Other languages
French (fr)
Other versions
CA2404156C (en
Inventor
Bo Thomas Sjolander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CME Blasting and Mining Equipment Ltd
Original Assignee
C.M.E. Blasting & Mining Equipment Ltd.
Bo Thomas Sjolander
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CA002306735A external-priority patent/CA2306735C/en
Application filed by C.M.E. Blasting & Mining Equipment Ltd., Bo Thomas Sjolander filed Critical C.M.E. Blasting & Mining Equipment Ltd.
Priority to CA002404156A priority Critical patent/CA2404156C/en
Publication of CA2404156A1 publication Critical patent/CA2404156A1/en
Application granted granted Critical
Publication of CA2404156C publication Critical patent/CA2404156C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/005—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor for cutting spherical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form

Abstract

The present invention provides a grinding cup (31) having a lower grinding section (32) and an upper body section (33) connected to form a grinding cup having top (34) and bottom surfaces (35). The grinding section (32) is formed from a material capable of grinding the hard materials such as tungsten carbide inserts of button bits etc. A centrally disposed convex recess is formed in the bottom surface (35) having the desired size and profile for the button to be ground.
Drive means (38) are provided on or in the upper body section that cooperate with the output shaft of the grinding machine.
The drive means (38) and the upper body section or grinding section (33) of the grinding cup are adapted to optimize the engagement surfaces and points of contact between the grinding cup (31) and rotor or adapter to reduce negative impact on operational stability and rotor wear, as well as other potential associated wear to the grinding apparatus caused by vibration and/or resonance.
CA002404156A 2000-04-27 2001-04-27 Grinding tool for buttons of a rock drill bit Expired - Lifetime CA2404156C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002404156A CA2404156C (en) 2000-04-27 2001-04-27 Grinding tool for buttons of a rock drill bit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002306735A CA2306735C (en) 2000-04-27 2000-04-27 Grinding cup having optimized drive and/or contact surfaces
CA2,306,735 2000-04-27
PCT/CA2001/000575 WO2001083164A1 (en) 2000-04-27 2001-04-27 Grinding tool for buttons of a rock drill bit
CA002404156A CA2404156C (en) 2000-04-27 2001-04-27 Grinding tool for buttons of a rock drill bit

Publications (2)

Publication Number Publication Date
CA2404156A1 true CA2404156A1 (en) 2001-11-08
CA2404156C CA2404156C (en) 2008-07-22

Family

ID=25681760

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002404156A Expired - Lifetime CA2404156C (en) 2000-04-27 2001-04-27 Grinding tool for buttons of a rock drill bit

Country Status (1)

Country Link
CA (1) CA2404156C (en)

Also Published As

Publication number Publication date
CA2404156C (en) 2008-07-22

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20210427