GB854521A - Improved method of producing a substantially spherical or substantially cylindrical surface of large radius - Google Patents
Improved method of producing a substantially spherical or substantially cylindrical surface of large radiusInfo
- Publication number
- GB854521A GB854521A GB1151056A GB1151056A GB854521A GB 854521 A GB854521 A GB 854521A GB 1151056 A GB1151056 A GB 1151056A GB 1151056 A GB1151056 A GB 1151056A GB 854521 A GB854521 A GB 854521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- abutments
- plane
- producing
- force
- convex
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Pivots And Pivotal Connections (AREA)
- Jigs For Machine Tools (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
854,521. Milling; planing. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 9, 1957 [April 16, 1956], No. 11510/56. Class 83 (3). A method of producing a surface of substantially circular cross-section on a member A, comprises supporting the member on spaced abutments a, a<1>, b, b<1>, applying force to the member at a region located symmetrically with respect to the abutments and on the opposite face of the member from that engaged by the abutments, so that the member is deflected into a convex or concave shape, machining the curved face of the member into a plane surface e, and then removing the deflecting force to restore the member to an unstressed condition and allow the machined surface to acquire the desired shape. For producing a substantially cylindrical or spherical convex surface, a single or, as illustrated, a double row of abutments a, a<1>, b, bl is provided which, in the case of a spherical surface, follows a circular path, the deflecting force being applied by bolts f. In the case of a spherical surface, central pressure is applied by one or more bolts, or by an eye-bolt screwed or welded to the underface of the member and stressed by a hook bolted to a bedplate. For producing concave surfaces, abutments in the form of clamps restrain outward movement of the periphery of the member while it is deformed, as by a screw-jack, into convex form. The convex surface is then machined into a plane surface and the deforming force released to allow the machined surface to assume a concave form. Alternatively, the central portion of the member is supported on one or more abutments, and the deforming force applied to the periphery by bolts. Instead of clamping the members to the bed of a machine to produce the deforming force, one member may be clamped to another with interposition between them of the abutments, the members thus being deformed in pairs. If the deforming force stresses the member beyond its elastic limit, so that its initially plane unmachined undersurface does not return to plane form, the member is bolted against the plane surface of a backing to restore the undersurface to plane form.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1151056A GB854521A (en) | 1956-04-16 | 1956-04-16 | Improved method of producing a substantially spherical or substantially cylindrical surface of large radius |
ES0234533A ES234533A1 (en) | 1956-04-16 | 1957-03-28 | Improved method of producing a substantially spherical or substantially cylindrical surface of large radius |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1151056A GB854521A (en) | 1956-04-16 | 1956-04-16 | Improved method of producing a substantially spherical or substantially cylindrical surface of large radius |
Publications (1)
Publication Number | Publication Date |
---|---|
GB854521A true GB854521A (en) | 1960-11-23 |
Family
ID=9987570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1151056A Expired GB854521A (en) | 1956-04-16 | 1956-04-16 | Improved method of producing a substantially spherical or substantially cylindrical surface of large radius |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES234533A1 (en) |
GB (1) | GB854521A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009021935A1 (en) * | 2007-08-16 | 2009-02-19 | Netstal-Maschinen Ag | Process and mould closure for an injection moulding machine having a tool clamping plate |
CN108330819A (en) * | 2018-03-09 | 2018-07-27 | 安徽尚德科技有限公司 | A kind of combined type spherical crown and its manufacturing process |
-
1956
- 1956-04-16 GB GB1151056A patent/GB854521A/en not_active Expired
-
1957
- 1957-03-28 ES ES0234533A patent/ES234533A1/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009021935A1 (en) * | 2007-08-16 | 2009-02-19 | Netstal-Maschinen Ag | Process and mould closure for an injection moulding machine having a tool clamping plate |
CN108330819A (en) * | 2018-03-09 | 2018-07-27 | 安徽尚德科技有限公司 | A kind of combined type spherical crown and its manufacturing process |
Also Published As
Publication number | Publication date |
---|---|
ES234533A1 (en) | 1957-10-01 |
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