GB888980A - Improvements in or relating to saw chains - Google Patents
Improvements in or relating to saw chainsInfo
- Publication number
- GB888980A GB888980A GB21104/60A GB2110460A GB888980A GB 888980 A GB888980 A GB 888980A GB 21104/60 A GB21104/60 A GB 21104/60A GB 2110460 A GB2110460 A GB 2110460A GB 888980 A GB888980 A GB 888980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- links
- degrees
- hole
- balls
- link
- 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
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
- B27B33/14—Saw chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L9/00—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Forging (AREA)
Abstract
888,980. Making chains. SANDVIKENS JERNVERKS A.B. June 15, 1960 [June 16, 1959; Feb. 4, 1960], No. 21104/60. Class 83 (2). [Also in Group XXV] In a method of making links for a saw chain the ends of the rivet holes in the links are workhardened by cold-coining. The chain comprises cutting links 4, driving links 6 and interconnecting links 8, and the ends of the rivet holes in each of the links is coined by pressing with a pair of steel balls 18, 20. The depth of the countersink is between 8-25%, and preferably between 10-15% of the link thickness. A tangent to the mid-point of the curved surface should make an angle with the axis of the hole between 40 degrees and 55 degrees, preferably 45 degrees. The diameter of the balls should be 50% to 200% greater than the diameter of the hole. Fig. 8 shows a press tool comprising an upper die unit 52 and a lower die unit 54 which is mounted in a plate 64 supported by a heavy spring 68. The link is located over the ball dies 60, 62 by a plate 67. In a modification (not shown, see Fig. 9) the balls are replaced by spherical ended cylindrical plungers. In a further modification the plungers have frustoconical ends and in a third modification the surfaces 98 (Fig. 5) are made convex by forming them with a cylindrical die of the same diameter as the hole and which has a concave protruding flange around the base part. Details are given of a typical link, the pressure used on the dies and the results of tests on the links produced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE888980X | 1959-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB888980A true GB888980A (en) | 1962-02-07 |
Family
ID=20374627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21104/60A Expired GB888980A (en) | 1959-06-16 | 1960-06-15 | Improvements in or relating to saw chains |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB888980A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2702988A1 (en) * | 1993-03-24 | 1994-09-30 | Stihl Andreas | Saw chain for chain motor saws. |
| WO1997033731A1 (en) * | 1996-03-12 | 1997-09-18 | Sandvik Aktiebolag | Methods of assembling a chain and a rivet for use in such assembly |
| WO2016034966A1 (en) * | 2014-09-03 | 2016-03-10 | Cosberg S.P.A. | Method for manufacturing, chain sub-units and machine |
| EP3050685A1 (en) * | 2015-01-30 | 2016-08-03 | Blount, INC. | Tie rivet for saw chain |
| CN107442647A (en) * | 2017-08-29 | 2017-12-08 | 中国林业科学研究院木材工业研究所 | A kind of circular saw-blade tension device |
| CN108620528A (en) * | 2018-04-25 | 2018-10-09 | 浙江恒久机械集团有限公司 | A kind of carrier bar porting equipment of leaf chain |
| US11247363B2 (en) | 2018-01-23 | 2022-02-15 | Oregon Tool, Inc. | Saw chain presets |
-
1960
- 1960-06-15 GB GB21104/60A patent/GB888980A/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2702988A1 (en) * | 1993-03-24 | 1994-09-30 | Stihl Andreas | Saw chain for chain motor saws. |
| WO1997033731A1 (en) * | 1996-03-12 | 1997-09-18 | Sandvik Aktiebolag | Methods of assembling a chain and a rivet for use in such assembly |
| WO2016034966A1 (en) * | 2014-09-03 | 2016-03-10 | Cosberg S.P.A. | Method for manufacturing, chain sub-units and machine |
| US9975265B2 (en) | 2014-09-03 | 2018-05-22 | Cosberg S.P.A. | Method for manufacturing, chain sub-units and machine |
| EP3689566A1 (en) * | 2014-09-03 | 2020-08-05 | Cosberg S.p.A. | Method of manufacturing, chain sub-units and machine |
| EP3050685A1 (en) * | 2015-01-30 | 2016-08-03 | Blount, INC. | Tie rivet for saw chain |
| CN105840735A (en) * | 2015-01-30 | 2016-08-10 | 布楼恩特公司 | Tie rivet for saw chain |
| CN105840735B (en) * | 2015-01-30 | 2019-03-01 | 布楼恩特公司 | Connection rivet for saw chain |
| US10406715B2 (en) | 2015-01-30 | 2019-09-10 | Blount, Inc. | Tie rivet for saw chain |
| CN107442647A (en) * | 2017-08-29 | 2017-12-08 | 中国林业科学研究院木材工业研究所 | A kind of circular saw-blade tension device |
| US11247363B2 (en) | 2018-01-23 | 2022-02-15 | Oregon Tool, Inc. | Saw chain presets |
| CN108620528A (en) * | 2018-04-25 | 2018-10-09 | 浙江恒久机械集团有限公司 | A kind of carrier bar porting equipment of leaf chain |
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