US3824829A - Rolling mill with shifting cams for shaping bars - Google Patents

Rolling mill with shifting cams for shaping bars Download PDF

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Publication number
US3824829A
US3824829A US00366423A US36642373A US3824829A US 3824829 A US3824829 A US 3824829A US 00366423 A US00366423 A US 00366423A US 36642373 A US36642373 A US 36642373A US 3824829 A US3824829 A US 3824829A
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US
United States
Prior art keywords
roll
cam
bar
housing
anvil
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 - Lifetime
Application number
US00366423A
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English (en)
Inventor
J Miller
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.)
Individual
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Individual
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
Application filed by Individual filed Critical Individual
Priority to US00366423A priority Critical patent/US3824829A/en
Priority to CA201,266A priority patent/CA995933A/en
Priority to DE2426453A priority patent/DE2426453C3/de
Priority to JP6261574A priority patent/JPS5319468B2/ja
Priority to GB3162774A priority patent/GB1423639A/en
Application granted granted Critical
Priority to FR7425578A priority patent/FR2279494A1/fr
Publication of US3824829A publication Critical patent/US3824829A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • a roll carriage provided with a vertically movable roll is normally located at one end of a rolling mill housing but is movable back and forth through a passage in the housing.
  • An anvil for supporting a heated bar is movable back and forth through the same passage beneath the roll.
  • Mounted in the housing above the roll is a first cam bar that has a lower surface of a predetermined shape. Beside this cam a similar cam bar is mounted.
  • the carriage When a portion of the anvil has moved forward beneath the roll, the carriage also is moved forward until the roll engages both the overlying first cam and the central portion of a heated bar on the anvil, whereupon the roll shapes the trailing end of the bar.
  • the cam bars are moved sideways to position the second cam above the roll so that when the carriage and anvil are returned through the housing passage the roll will shape the previously unrolled end of the heated bar.
  • FIG. 1 is a plan view, with the top of the mill housing broken away;
  • FIG. 2 is a side view, with the roll carriage and the bar carriage shown in vertical section;
  • FIG 3 is an enlarged fragmentary end view of the mill housing, showing the bar carriage and half of the carriage in vertical section.
  • a rolling mill housing 1 is provided with a largepassage extending through it from end to end between its four corner columns 2.
  • the housing is very short, being only about one-third the length of the mill housing shown in the abovementioned Krause patent.
  • Extending through the lower part of the housing is a pair of laterally spaced I-beams 3 that project from its opposite ends. Between these beams there is a frame 4 that is mounted on the bottom of the housing passage.
  • a vertically adjustable bed bar 5 is mounted in the top of the frame andprojects above it.
  • a roll carriage 7 Disposed in the housing passage and normally projecting from its loading and unloading end is a roll carriage 7 that contains a pair of vertically spaced rolls 8 and 9. The lower roll 9 is supported .by the bed bar 5 with its necks journalled in bearings 10 (FIG. 3)
  • the upper roll is mounted for vertical movement in recesses in the lower part of the carriage.
  • the upper roll is mounted in the same way in the upper part of the carriage and is spaced a considerable distance from the top of the housing passage.
  • the necks of the upper roll are journalled in bearings 12 vertically movable in carriage recesses at opposite sides of the roll.
  • Bars 13, secured to the tops of these bearings, rest on the tops of coils springs 14 that thereby supportthebearings and normally press the bars up against brackets 15 attached to the carriage.
  • the brackets limit the distance the roll can be moved upwardly.
  • the upper roll 8 is intended to engage and roll along the lower face of a cam bar 16 mounted above it in the mill housing.
  • the cam bar is shaped to give the desired contour to a heated bar that is to be rolled in the mill. If the heated bar is to be tapered'in thickness toward its opposite ends, the lower surface of the cam bar will be inclined as shown in FIG.
  • These tracks are supported by short posts 22 mounted on the underlying I- beams 3 and are located about midway between the top and bottom of the carriage.
  • Running along the inside of the tracks are two pairs of wheels 24 that support an anvil carriage 25.
  • Means, such as a hydraulic cylinder 26 and piston rod 27, are provided for moving this carriage along the tracks and between the rolls of the roll carriage.
  • the rod end of the cylinder is secured to a cross beam 28 mounted on the outer ends of a pair of box beams 29, the inner ends of which are secured to the two columns of the mill housing at its loading end.
  • the anvil carriage supports an anvil 30 extending lengthwise thereof along its center. A heated bar that is to be rolled can be held on this anvil by any suitable means.
  • the frame is provided with a large downwardly opening recess extending from end to end, the upper wall of which is provided with a pair of parallel dove tail slots extending lengthwise of it. Matching tongues on the top of two adjusting bars 41 and 42 are supported in these slots.
  • the adjusting bars project from one end of the frame and are provided with adjusting screws 43 engaging the frame so that the bars can be adjusted lengthwise of the frame.
  • the bottom of each of these bars is inclined lengthwise and is provided with a dove tail slot that supports a tongue on top of one of the underlying cam bars.
  • the tops of the cam bars are inclined to fit the adplate 44 secured to 'one end of frame 37 prevents movement of the cams in that direction.
  • the cam frame 37 can be moved laterally along rails 39 by a hydraulic cylinder 46 supported by the mill housing and containing a piston 47 connected to the frame. In one position of the frame, one of the cam bars is above the upper roll 8 as shown in the drawings and in the other position of the frame the other cam bar is above that roll. Consequently, one end of the heated bar is tapered as the two carriages travel forward through the mill housing, and then the other end of the same bar is tapered as the carriages are moved back through the housing, thecams having been shifted sideways in the meantime. After both ends of the bar have been tapered, the cams are moved back to their first position ready to taper a new bar placed on the anvil.
  • this invention reduces the time required for rolling each bar because it has to travel such a much shorter distance.
  • a rolling mill for shaping bars comprising a stationary housing provided with a horizontal passage therethrough, a roll carriage normally located at one end of the housing but movable throughsaid passage toward the opposite end, a horizontal roll, means connecting the roll with the carriage for up and down movement therein, an anvil at said one end of the housing adapted to support a heated bar, means for moving the anvil forward into and through said passage beneath said roll and then back through the passage, means for supporting the anvil while beneath the roll, a first cam bar mounted in the housing above the roll and'having a lower surface with a predetermined shape, a second cam bar mounted in the housing beside said first cam bar parallel thereto and likewise having a lower surface with a predetermined shape, means operative when a portion of the anvil has moved forward beneath the roll for moving the carriage forward until the roll frictionally engages both the overlying first cam bar and the central portion of a heated bar on said anvil, whereupon said frictional engagement will cause the roll to advance at about half the speed of the anvil and shape the
  • a rolling mill according to claim 1 including means for adjusting said cam bars vertically.
  • a rolling mill according to claim 1 in which the lower surfaces of said cam bars are substantially identical but are reversed relative to each other. 5. A rolling mill according to claim 1, in which the lower surface of one cam bar is. shaped to taper a heated bar from its central'portion toward one end, and the lower surface of the other cam bar is shaped to taper the same heated bar from its central portion toward its opposite end.
  • a rolling mill according to claim 1 including springs urging said roll upwardly in said carriage, and means limiting the upward movement of the roll.
  • said anvil-supporting means are a second roll journaled in the lower part of said carriage, and a track extending through the housing passage and supported by the housing with said second roll running on the track.
  • a rolling mill including a frame supporting said cam bars, and means connecting the frame to said housing for movement transversely of said passage, said cam-moving means being connected to said housing and frame.
  • a rolling mill including a frame supporting said cam bars, and means connecting the frame to said housing for movement transversely of said passage, said cam-moving means being connected to said housing and frame, the lower surface of one of said cam bars being inclined in one direction to taper a heated bar from its central portion toward one end, and the lower surface of the other cam bar being inclined in the opposite direction to taper the same heated bar from its central portion toward its opposite end.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Feeding Of Workpieces (AREA)
US00366423A 1973-06-04 1973-06-04 Rolling mill with shifting cams for shaping bars Expired - Lifetime US3824829A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00366423A US3824829A (en) 1973-06-04 1973-06-04 Rolling mill with shifting cams for shaping bars
CA201,266A CA995933A (en) 1973-06-04 1974-05-30 Rolling mill with shifting cams for shaping bars
DE2426453A DE2426453C3 (de) 1973-06-04 1974-05-31 Reversierwalzwerk zum Endenbearbeiten von Flachstäben
JP6261574A JPS5319468B2 (de) 1973-06-04 1974-06-04
GB3162774A GB1423639A (en) 1973-06-04 1974-07-17 Rolling mill for shaping bars
FR7425578A FR2279494A1 (fr) 1973-06-04 1974-07-23 Laminoir pour barres profilees

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US00366423A US3824829A (en) 1973-06-04 1973-06-04 Rolling mill with shifting cams for shaping bars
GB3162774A GB1423639A (en) 1973-06-04 1974-07-17 Rolling mill for shaping bars
FR7425578A FR2279494A1 (fr) 1973-06-04 1974-07-23 Laminoir pour barres profilees

Publications (1)

Publication Number Publication Date
US3824829A true US3824829A (en) 1974-07-23

Family

ID=42174038

Family Applications (1)

Application Number Title Priority Date Filing Date
US00366423A Expired - Lifetime US3824829A (en) 1973-06-04 1973-06-04 Rolling mill with shifting cams for shaping bars

Country Status (6)

Country Link
US (1) US3824829A (de)
JP (1) JPS5319468B2 (de)
CA (1) CA995933A (de)
DE (1) DE2426453C3 (de)
FR (1) FR2279494A1 (de)
GB (1) GB1423639A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1195817A (en) * 1982-01-22 1985-10-29 Leung Tom Investment casting using metal sprue
JPH0234246A (ja) * 1988-07-22 1990-02-05 Iwao Tezuka 宝飾類のの鋳型成形用フラスク及び鋳型成形方法
CN112743310B (zh) * 2020-12-28 2022-05-10 广州可鼎自动化设备有限公司 一种异型弹簧双工位组装装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775152A (en) * 1955-07-06 1956-12-25 Mckay Machine Co Apparatus for tapering the ends of spring leaves and the like
US3490261A (en) * 1967-04-03 1970-01-20 Gen Motors Corp Method and apparatus for producing tapered leaf springs
US3496749A (en) * 1967-11-28 1970-02-24 Richard Krause Rolling mill for shaping bars

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775152A (en) * 1955-07-06 1956-12-25 Mckay Machine Co Apparatus for tapering the ends of spring leaves and the like
US3490261A (en) * 1967-04-03 1970-01-20 Gen Motors Corp Method and apparatus for producing tapered leaf springs
US3496749A (en) * 1967-11-28 1970-02-24 Richard Krause Rolling mill for shaping bars

Also Published As

Publication number Publication date
CA995933A (en) 1976-08-31
DE2426453C3 (de) 1980-10-23
FR2279494A1 (fr) 1976-02-20
DE2426453B2 (de) 1980-02-28
JPS5032062A (de) 1975-03-28
JPS5319468B2 (de) 1978-06-21
GB1423639A (en) 1976-02-04
FR2279494B1 (de) 1978-07-13
DE2426453A1 (de) 1974-12-12

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