GB2294224A - Improved x-axis accuracy in two axis machine tools - Google Patents

Improved x-axis accuracy in two axis machine tools

Info

Publication number
GB2294224A
GB2294224A GB9600322A GB9600322A GB2294224A GB 2294224 A GB2294224 A GB 2294224A GB 9600322 A GB9600322 A GB 9600322A GB 9600322 A GB9600322 A GB 9600322A GB 2294224 A GB2294224 A GB 2294224A
Authority
GB
United Kingdom
Prior art keywords
worktool
axis
reference surface
work axis
sensing means
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
GB9600322A
Other versions
GB9600322D0 (en
GB2294224B (en
Inventor
Christopher David Bartlett
Michael Laycock
Peter Brian Leadbeater
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.)
Intermec Europe Ltd
Original Assignee
Western Atlas UK 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
Priority claimed from GB939315843A external-priority patent/GB9315843D0/en
Application filed by Western Atlas UK Ltd filed Critical Western Atlas UK Ltd
Priority to GB9600322A priority Critical patent/GB2294224B/en
Publication of GB9600322D0 publication Critical patent/GB9600322D0/en
Publication of GB2294224A publication Critical patent/GB2294224A/en
Application granted granted Critical
Publication of GB2294224B publication Critical patent/GB2294224B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • 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
    • B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • 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
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

A machine tool, comprising: a worktable assembly slidably carried by the machine frame for reciprocal movement along a work axis and which is configured to carry a workpiece. A worktool assembly is slidably carried by said machine frame for reciprocal movement along a worktool axis at a predetermined angle with respect to said work axis and so as to intersect same. A reference straight edge is carried by said worktable assembly and has a reference surface. Reference sensing means is carried by said machine frame for coaction with said reference straight edge reference surface, to measure reference spacing between said reference surface and said reference sensing means and to provide a reference output indicative of said reference spacing. Control means is provided to facilitate movement of said worktool towards and away from said work axis, which is responsive to said reference output to further facilitate worktool movement towards said work axis. The reference sensing means includes a fixed electrode that forms with said reference surface a capacitance gauge. The control means includes a look-up table storing information relative to initial dispositions of said reference surface and said reference sensing means, to provide an initial disposition output indicative thereof to further modify and facilitate worktool movement towards said work axis. The lock-up table initial disposition output is indicative of the flatness of said reference surface. <IMAGE>
GB9600322A 1993-07-30 1994-08-01 Improved x-axis accuracy in two axis machine tools Expired - Fee Related GB2294224B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9600322A GB2294224B (en) 1993-07-30 1994-08-01 Improved x-axis accuracy in two axis machine tools

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939315843A GB9315843D0 (en) 1993-07-30 1993-07-30 Improved machine tool
PCT/GB1994/001665 WO1995003916A1 (en) 1993-07-30 1994-08-01 Improved x-axis accuracy in two axis machine tools
GB9600322A GB2294224B (en) 1993-07-30 1994-08-01 Improved x-axis accuracy in two axis machine tools

Publications (3)

Publication Number Publication Date
GB9600322D0 GB9600322D0 (en) 1996-03-13
GB2294224A true GB2294224A (en) 1996-04-24
GB2294224B GB2294224B (en) 1997-06-04

Family

ID=26303305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9600322A Expired - Fee Related GB2294224B (en) 1993-07-30 1994-08-01 Improved x-axis accuracy in two axis machine tools

Country Status (1)

Country Link
GB (1) GB2294224B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB807994A (en) * 1954-10-29 1959-01-28 Nat Res Dev Improvements relating to machine tools
JPS54102671A (en) * 1978-01-31 1979-08-13 Hitachi Seiki Co Ltd Straightness compensator of machine tool
EP0309821A2 (en) * 1987-10-02 1989-04-05 Körber Ag Protective covering for machine tool tracks
JPH02160457A (en) * 1988-01-28 1990-06-20 Hitachi Seiki Co Ltd Correcting device for straightness of machine tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB807994A (en) * 1954-10-29 1959-01-28 Nat Res Dev Improvements relating to machine tools
JPS54102671A (en) * 1978-01-31 1979-08-13 Hitachi Seiki Co Ltd Straightness compensator of machine tool
EP0309821A2 (en) * 1987-10-02 1989-04-05 Körber Ag Protective covering for machine tool tracks
JPH02160457A (en) * 1988-01-28 1990-06-20 Hitachi Seiki Co Ltd Correcting device for straightness of machine tool

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, vol.14, no.416(M-1021) & JP 02 160457 A *
Patent Abstracts of Japan,vol.3,no.126(M-077) & JP 54 102671 A *

Also Published As

Publication number Publication date
GB9600322D0 (en) 1996-03-13
GB2294224B (en) 1997-06-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050801