JPS5689301A - Manufacture of tapered bar - Google Patents
Manufacture of tapered barInfo
- Publication number
- JPS5689301A JPS5689301A JP16728179A JP16728179A JPS5689301A JP S5689301 A JPS5689301 A JP S5689301A JP 16728179 A JP16728179 A JP 16728179A JP 16728179 A JP16728179 A JP 16728179A JP S5689301 A JPS5689301 A JP S5689301A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- blank material
- rolls
- rolling
- tapered
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
- B21H7/007—Taper rolling, e.g. leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/22—Hinged chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/28—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by toggle-lever mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To roll the blank material into tapered bars different in length and grade of the taper, by variably controlling the roll gap of each of the rolling roll, the twist preventing roller, the edging roll, and the shape reforming roll. CONSTITUTION:In the rolling work for rolling the blank material a0 into a tapered bar by the group of rolling rolls shaped into true roundness, whose roll gaps are variably controlled in connection with the longitudinal extent of movement of the blank material a0, first of all, the blank material a0 is preliminarily rolled into a tapered shape a1 by variably controlling the roll gap of the rolling rolls 6, 7, respectively provided with a projection 8 and its counter groove 9. Next, this blank material a1 is further rolled into a tapered shape a2 by controlling the roll gap of the flat rolls 12, 12. Next, the blank material a2 is subjected to the edging work of the edging rolls 13, 13; hereupon, two couples of roll-gap-adjustable upper and lower twist preventing rollers 14 press the blank material a2 in its thickness direction in order to prevent the blank material a2 from being twisted by the edging work of the rolls 13, 13. Thus obtained material a3 is pressed by the flat rolls 27, 27, in the thickness direction in order to straighten the ruggedness of the tapered part; hereby, the product b0 is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16728179A JPS5689301A (en) | 1979-12-22 | 1979-12-22 | Manufacture of tapered bar |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16728179A JPS5689301A (en) | 1979-12-22 | 1979-12-22 | Manufacture of tapered bar |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5689301A true JPS5689301A (en) | 1981-07-20 |
Family
ID=15846831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16728179A Pending JPS5689301A (en) | 1979-12-22 | 1979-12-22 | Manufacture of tapered bar |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5689301A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54155973A (en) * | 1978-05-30 | 1979-12-08 | Nhk Spring Co Ltd | Width collecting machine in leaf spring taper rolling |
-
1979
- 1979-12-22 JP JP16728179A patent/JPS5689301A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54155973A (en) * | 1978-05-30 | 1979-12-08 | Nhk Spring Co Ltd | Width collecting machine in leaf spring taper rolling |
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