CA1095251A - Button grinding - Google Patents

Button grinding

Info

Publication number
CA1095251A
CA1095251A CA317,416A CA317416A CA1095251A CA 1095251 A CA1095251 A CA 1095251A CA 317416 A CA317416 A CA 317416A CA 1095251 A CA1095251 A CA 1095251A
Authority
CA
Canada
Prior art keywords
wheel
clevis
grinding wheel
tool
shank
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.)
Expired
Application number
CA317,416A
Other languages
French (fr)
Inventor
James Mcenery
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.)
Boart International Ltd
Original Assignee
Boart International Ltd
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
Application filed by Boart International Ltd filed Critical Boart International Ltd
Application granted granted Critical
Publication of CA1095251A publication Critical patent/CA1095251A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/002—Grinding heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
    • B23Q1/0027—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/06—Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/33—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of drills for stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

ABSTRACT OF DISCLOSURE

Buttons, e.g. on button bits, are ground by means of a concavely peripherally profiled grinding wheel. The wheel is rotated by matched motors to either side of it and the assembly of wheel and rotation motors is carried by a clevis. The shank of the clevis is chucked to a machine such as a rotary drilling machine.

Description

Background of the Invention This invention relates to the grinding of buttons such ais are found, for example, on button bits and the like.

If the buttons on a bit wear, one could replace the bit and send the original to a repair shop some ~istance away. On the other hand one could resurface the buttons on site. For the latter purpose it has been proposed to utilize cup~shaped grinding tools which are complemental to the sihape of the buttons after re-sharpening. These have not been highly successful as the cups normally only had a single layer of diamonds.

It would of advantage to use a more or less standard grinding wheel for button sharpening.

Summary_of the Invention According -to the invention a button sharpening tool comprises a grinding wheel peripherally profiled to an annular concavity, at least one motor coupled to the wheel for driving the wheel, and meanis for rotating the wheel and motor assembly about an axis which is at right angles to the grinding wheel axis of rotation.

In the preferred form of the invention there are two motors of the same kind and rating with a grinding wheel between them so as to achieve balance around the axis at right angles. Balance, could, of course, also be achieved by means of a suitable counterweight.

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Description of -the Dra~ing The drawing shows a section through a button sharpening dev;ce according to the invention.

Description of a Preferred Embod;ment A concavely peripherally prof;led grinding wheel 9 is mounted on a shaft which projects to either side of the wheel 9. The shaft 10 is fast with the rotors of two air motors 11 mountecl to either side of the wheel 9.

~l~vis ~ rhe motors are carried by a 6~e*i6e body 12 which forms a narrow neck 13 ending in a shank 14. The neck 13 enters a ring 15 and is sealed by means of suitable 0-rings. The ring 15 has two inlets 16 and 17 for carrying air and coolant respectively. The inlet 16 leads to a passage 18 which forks and leads to the air inlets of the motors 11. The inlet 17 leads to a suitably placed outlet 19 next to the wheel 9.
`~
In use the shank 14 is chucked to a suitable machine for causing it to rotate, e.g. a rotary drill chuck. Air and coolant are connected and, with the assembly rotating, the wheel 9 is placed against a button which is redressed on all faces s;multaneously,
- 3 ~

If necessary ~he coolant could be replaced by an electrolyte and the body or the wheel connected to one side of a DC current supply and the bit to be sharpened to the other side to render the b;t an anode. ~.
- 4 '!, ' ' ' . ;: - ' ' " ' ' ' ' ` ' ' . :

Claims (4)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A button sharpening tool comprising a grinding wheel peripherally profiled to an annular concavity, at least one motor coupled to the wheel for driving the wheel, and means for rotating the wheel and motor assembly about an axis which is at right angles to the grinding wheel axis of rotation.
2. The tool claimed in claim 1 including two motors of the same kind and rating with the grinding wheel between them.
3. The tool claimed in claim 1 in which the grinding wheel is mounted between the forks of a clevis and the shank of the clevis is adapted to the chuck of a rotary driving mechanism.
4. The tool claimed in claim 3 including a liquid swivel around the shank and a passage to between the forks of the clevis to deliver coolant liquid to the wheel.
CA317,416A 1977-12-05 1978-12-05 Button grinding Expired CA1095251A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA77/7206 1977-12-05
ZA00777206A ZA777206B (en) 1977-12-05 1977-12-05 Button grinding

Publications (1)

Publication Number Publication Date
CA1095251A true CA1095251A (en) 1981-02-10

Family

ID=25572340

Family Applications (1)

Application Number Title Priority Date Filing Date
CA317,416A Expired CA1095251A (en) 1977-12-05 1978-12-05 Button grinding

Country Status (5)

Country Link
AU (1) AU516263B2 (en)
CA (1) CA1095251A (en)
GB (1) GB2008997B (en)
IE (1) IE47966B1 (en)
ZA (1) ZA777206B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858388A (en) * 1986-07-25 1989-08-22 Bice Keith C Restoration or drill buttons
CA1322459C (en) * 1989-05-19 1993-09-28 Jan Siden Abrasive wheel
SE463754B (en) * 1989-05-24 1991-01-21 Inovac Ab DEVICE FOR HANDHALLEN GRINDING MACHINE FOR GRIPPING CUTTER DRILLS
SE469970B (en) * 1992-06-15 1993-10-18 Uniroc Grinding Ab Vibration dampening grinding cup for grinding cemented carbide pins of pin drill bits and holders for such grinding cup
SE501695C2 (en) * 1993-06-22 1995-04-24 Sandvik Ab Method of supplying coolant to an abrasive cup as well as abrasive cup to perform the process
SE503183C2 (en) * 1993-12-14 1996-04-15 Sandvik Ab Method and apparatus for grinding pins of a rock drill bit and spool head to apply flushing medium in the grinding of the pins of such rock drill bit
SE0700991L (en) * 2007-04-25 2008-10-26 Atlas Copco Secoroc Ab Method and apparatus for grinding pin drill bits, as well as grinding wheel for carrying out the method

Also Published As

Publication number Publication date
GB2008997B (en) 1982-01-13
IE782289L (en) 1979-06-05
GB2008997A (en) 1979-06-13
AU4200578A (en) 1979-06-14
AU516263B2 (en) 1981-05-28
ZA777206B (en) 1979-05-30
IE47966B1 (en) 1984-08-08

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Legal Events

Date Code Title Description
MKEX Expiry