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 Title: |
US5259710:
Octahedral machine tool frame
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Charles, Paul A. S.; Larne, Ireland
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| Assignee: |
Ingersoll Milling Machine Company, Rockford, IL
other patents from INGERSOLL MILLING MACHINE COMPANY (272735) (approx. 63)
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| Published / Filed: |
1993-11-09
/ 1991-08-26
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| Application Number: |
US1991000749582
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| IPC Code: |
Advanced:
B23Q 1/00;
B23Q 1/01;
B23Q 1/44;
B23Q 1/54;
B23Q 5/22;
B23Q 5/36;
Core:
B23Q 1/25;
more...
IPC-7:
B23Q 1/02;
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| U.S. Class: |
Current:
409/235;
408/234;
409/201;
409/216;
409/238;
Original:
409/235;
409/201;
409/216;
409/238;
408/234;
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| Field of Search: |
409/201,235,238,239,242,224,216,79,130,132,168,211
029/429,428
269/073,309
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| Priority Number: |
| 1991-08-26 |
US1991000749582 |
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| Abstract: |
A machine tool frame is disclosed which is comprised of twelve struts connected together at their ends in six nodes to define the eight triangular panels of an octahedron. Forces generated by the operation of the machine tool are received by the frame at its nodes, being the nodes of opposed parallel triangular panels, upper and lower, in the specific examples illustrated. The octahedral frame displays superior rigidity due to its inherently closed kinematic loop, and to the virtual absence of bending stress in its constituent members accomplished by nodal loading. Movable machine elements are mounted upon six extensible and retractable servo-struts emanating in pairs from the nodes of a given triangular panel of the octahedral frame while opposing fixed elements located within the octahedral frame are supported tripodally from the frame nodes associated with a single triangular panel of the frame.
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| Attorney, Agent or Firm: |
Fitch, Even, Tabin & Flannery ;
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| Primary / Asst. Examiners: |
Bilinsky, Z. R.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
DE GB IT
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| Family: |
Show 15 known family members
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First Claim:
Show all 12 claims |
What is claimed is:
1. A machine tool having a frame comprising twelve struts connected together at their ends in the form of an octahedron,
- a work unit mounted on said frame by one set of supporting struts extending from said work unit to the corners of one of the triangular panels of the octahedron, and
- a worktable mounted on said frame by a second set of supporting struts extending from said worktable to the corners of another one of the triangular panels of the octahedron,
- said worktable being addressable by the work unit for the performance of its work function upon a workpiece mounted on said worktable.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 27 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other Abstract Info: |
DERABS G93-102717
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| Other References: |
Excerpt from the London Sunday Times of Jan. 3, 1988, Polishing off the Japanese.
Literature from the National Physical Laboratory (U.K.) in 1987, "Tetraform 1-a Nanoprecision Machine Tool Concept".
Proceedings of the Institution of Mechanical Engineers 1965-66, vol. 180, part I,. No. 15, "A Platform with Six Degrees of Freedom", D. Stewart, pp. 371-386.
Journal of Mechanisms, Transmissions, and Automation in Design, Jun. 1984, vol. 106 of the Transactions of the ASME, pp. 191-198, "Feasibility Study of a Platform Type of Robotic Manipulators from a Kinematic Viewpoint", by D. C. H. Yang and T. W. Lee.
(8 pages)
Cited by 3 patents
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