CN1714969A - Single shaft double eccentric asymmetric rolling shearing machine - Google Patents

Single shaft double eccentric asymmetric rolling shearing machine Download PDF

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Publication number
CN1714969A
CN1714969A CN 200510012654 CN200510012654A CN1714969A CN 1714969 A CN1714969 A CN 1714969A CN 200510012654 CN200510012654 CN 200510012654 CN 200510012654 A CN200510012654 A CN 200510012654A CN 1714969 A CN1714969 A CN 1714969A
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China
Prior art keywords
shearing
frame
shearing machine
central line
rolling
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CN 200510012654
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Chinese (zh)
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CN1283403C (en
Inventor
黄庆学
李玉贵
孙斌煜
孟进礼
王晓慧
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Taiyuan University of Science and Technology
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Taiyuan University of Science and Technology
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Priority to CN 200510012654 priority Critical patent/CN1283403C/en
Publication of CN1714969A publication Critical patent/CN1714969A/en
Application granted granted Critical
Publication of CN1283403C publication Critical patent/CN1283403C/en
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Abstract

The present invention relates to auxiliary apparatus of steel rolling machine and is especially rolling steel plate shearing machine with improved crankshaft installing position. The rolling steel plate shearing machine includes frame, right and left crank-link rod mechanism on the frame, upper arced shearing edge on the upper cutter holder and lower shearing edge on the lower edge holder. The rolling steel plate shearing machine features that the central line of two cranks is deviated to the central line of the frame by 20-100 mm asymmetrically, and that the central line of two link rods is in some angle to the vertical plane the central line of the frame is in when the upper shearing edge in its maximum opening. Compared with available technology, the present invention has circular shearing locus near rolling, reasonable shearing machine stress, reduced moment to the shearing mechanism, raised steel plate shearing quality and longer cutter life.

Description

The asymmetric rolling shearing machine of single shaft double eccentric
Technical field
The invention belongs to rolling machinery auxiliary equipment technical field, be specifically related to the technological improvement of installation position of drive shafting in a kind of roller steel plate shearing machine.
Background technology
In the prior art, the cutting to length machine adopts roller to cut to cut main transmission two kinds of schemes are arranged: a kind of is the twin shaft double eccentric-pieces, and a kind of is the single shaft double eccentric formula.So-called twin shaft double eccentric-pieces, be exactly final drive shaft be two, and drive shaft axis is vertical with cutting edge, an off-centre arranged, so be called the twin shaft double eccentric-pieces on the every axle.The scale rolling cut of external design is cut this form that is.And the single shaft double eccentric formula has only a final drive shaft, two bent axles of final drive shaft and frame central line symmetry.Because the circular arc cutting edge is carried out pure rolling, this structure makes the cutting edge discontinuity, has shortened cutter life greatly, has reduced shearing quality.
Summary of the invention
The present invention is directed to the technical problem that exists in the prior art, provide a kind of circular arc cutting edge that improves to shear operating mode, reduce shearing force, improve the circular arc cutting edge life-span, improve the asymmetric rolling shearing machine of single shaft double eccentric of shearing quality.
The present invention realizes by following scheme, the asymmetric rolling shearing machine of single shaft double eccentric includes frame and is contained in the left and right sides toggle on the frame and is contained in circular arc upper scissor blade on the upper tool post, lower scissor blade is contained on the lower blade station, it is characterized in that being contained in the center line O of two cranks on the bent axle 2-O 2With respect to frame central line O 1-O 1Offset distance OS is 20～100mm.
Offset distance OS of the present invention calculates by following formula:
OS＝L 3sin(90°-β)
In the formula: β---asymmetric front rod and horizontal plane angle;
L 3---length of connecting rod;
β＝90°-arcsin(OS/L 3)。
Two crank center lines overlap with the frame central line on the gyroaxis of existing single shaft double eccentric rolling shearing machine, and promptly two cranks are symmetrically distributed in frame central line both sides.The present invention is with two crank center line O 2-O 2One of horizontal-shift apart from OS (with pull bar not at homonymy), i.e. two crank center line O 2-O 2With frame central line O 1-O 1At a distance of OS, form and frame central line dissymmetrical structure, be called the asymmetric rolling shearing machine of single shaft double eccentric, be characterized in making stressing conditions good, make the steel plate shearing quality be improved significantly.
Advantage of the present invention and beneficial effect are:
Circular arc cutting edge movement locus of the present invention more approaches pure rolling, and cutter is whole stressed more reasonable, and the suffered torque ratio of whole cutting mechanism reduced originally to some extent, and quality of steel plates improves greatly, and cutter life also greatly prolongs.
Description of drawings
Fig. 1 is the structure chart of the asymmetric rolling shearing machine of single shaft double eccentric
Fig. 2 is the analysis chart of offset distance OS in the asymmetric rolling shearing machine of single shaft double eccentric
Among the figure: 1-circular arc upper scissor blade, the 2-upper tool post, the 3-right side is hinged, the 4-gear wheel, the 5-right connecting rod, the right crank of 6-, the 7-bent axle, the 8-crossbeam, 9-left side crank, 10-left side connecting rod, the 11-frame, a 12-left side is hinged, 13-level of flexibility pull bar, 14-steel plate, 15-lower scissor blade, 16-lower blade station
O 1-O 1: frame central line, O 2-O 2: left and right sides crank center line, OS: offset distance.
The specific embodiment
With reference to the accompanying drawings embodiment is further described, present embodiment is to be used for illustrating of the present invention, rather than the present invention is carried out any restriction.
The present invention is an example with a large-scale rolling shearing machine of certain iron company's design, has adopted the single shaft double eccentric unsymmetric structure.Shearing force 850KN, shear steel board size 40 * 2700 * 6000～120000.Per minute is sheared number of times 15 times.
The asymmetric rolling shearing machine of single shaft double eccentric, constitute by frame 11, circular arc upper scissor blade 1, lower scissor blade 15 and toggle etc., scissors 1 is contained on the upper tool post 2 on the circular arc, right hinged 3 and left hinged 12 are contained on the upper tool post 2, the upper end of left side connecting rod 10 links to each other with left crank 9, the lower end links to each other with a left side hinged 12, the upper end of right connecting rod 5 links to each other with right crank 6, the lower end links to each other with the right side hinged 3, bent axle 7 is contained in the dead eye on the frame 11, gear wheel 4 is contained in the right-hand member of bent axle 7, when bent axle 7 is installed, and two cranks 6 and 9 center line O 2-O 2With respect to frame central line O 1-O 1Offset distance OS is 61.12mm, with frame central line O 1-O 1Constitute unsymmetric structure.
Offset distance OS is by calculating shown in Figure 2, and the rolling shearing machine connecting rod is in asymmetric front and back working condition.Before asymmetric, when being in the maximum shear state, connecting rod ad is horizontal by the β angle, and bent axle can not all be used for shearing for the power of connecting rod, and efficient is very low; After asymmetric, when being in the maximum shear state, connecting rod a ' d is vertical with horizontal plane, and the power of connecting rod almost all is used for shearing.
D---connecting rod and on cut the hinged point of frame;
A---the hinged point of asymmetric front crankshaft and connecting rod;
A '---asymmetric back bent axle and the hinged point of connecting rod;
β---asymmetric front rod and horizontal plane angle;
L 3---length of connecting rod;
Ad, a ' d---connecting rod;
F 1---act on the power on the steel plate before structure is asymmetric;
F 2---act on the power on the steel plate after structure is asymmetric;
F---the power on the connecting rod.
β＝90°-arcsin(OS/L 3)
F 1＝F
F 2＝F/cos(90-β)
aa′＝2·L 3sin((90°-β)/2)，dh′＝L 3·cos((90°-β)/2)
Again because aa ' dh '=L 3Ah, so, ah=aa ' dh '/L 3
OS＝ah
OS=aa ' dh '/L 3=L 3Sin (90 °-β) promptly
Asymmetric side-play amount is: OS=L 3Sin (90 °-β)
Substitution known parameters β=87.5 °, L 3=1400mm
So obtain asymmetric side-play amount be: OS=L 3Sin (90 °-β)=61.12mm.
Gear wheel 4 is given bent axle 7 with transmission of power when shearing operation, and bent axle 7 rotations drive the left and right sides crank 9,6 with certain phase difference and rotate together, and left and right sides crank 9,6 drives left and right sides connecting rod 10,5 respectively and the left and right sides hinged 12,3 drives upper tool post 2 motions.Upper tool post 2 circular arc upper scissor blades 1 mounted thereto are done approximate pure rolling under the control of level of flexibility pull bar 13, finish shearing to steel plate 14 with lower scissor blade 15.

Claims (2)

1, the asymmetric rolling shearing machine of a kind of single shaft double eccentric, include frame (11), with be contained in the left and right sides toggle on the frame and be contained in circular arc upper scissor blade (1) on the upper tool post (2), lower scissor blade (15) is contained on the lower blade station (16), it is characterized in that being contained in two cranks (6) on the bent axle (7) and the center line O of (9) 2-O 2With respect to frame central line O 1-O 1Offset distance OS is 20～100mm.
2, the asymmetric rolling shearing machine of single shaft double eccentric according to claim 1 is characterized in that offset distance OS calculates by following formula:
OS＝L 3sin(90°-β)
In the formula: β---asymmetric front rod and horizontal plane angle;
L 3---length of connecting rod;
β＝90°-arcsin(OS/L 3)。
CN 200510012654 2005-07-04 2005-07-04 Single shaft double eccentric asymmetric rolling shearing machine Active CN1283403C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510012654 CN1283403C (en) 2005-07-04 2005-07-04 Single shaft double eccentric asymmetric rolling shearing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510012654 CN1283403C (en) 2005-07-04 2005-07-04 Single shaft double eccentric asymmetric rolling shearing machine

Publications (2)

Publication Number Publication Date
CN1714969A true CN1714969A (en) 2006-01-04
CN1283403C CN1283403C (en) 2006-11-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804480A (en) * 2010-03-02 2010-08-18 江苏瑞盛水处理有限公司 Method and device for cutting metal-moulded honeycomb thin wave plate
CN102366843A (en) * 2010-09-08 2012-03-07 新疆八一钢铁股份有限公司 Dragging length-measuring thin plate hydraulic cutter
CN103603909A (en) * 2013-11-25 2014-02-26 太原科技大学 Double-crankshaft damping device of reciprocating electric tool
CN111036684A (en) * 2019-11-08 2020-04-21 东北大学 Servo control method for medium plate hydraulic rolling shear

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804480A (en) * 2010-03-02 2010-08-18 江苏瑞盛水处理有限公司 Method and device for cutting metal-moulded honeycomb thin wave plate
CN102366843A (en) * 2010-09-08 2012-03-07 新疆八一钢铁股份有限公司 Dragging length-measuring thin plate hydraulic cutter
CN103603909A (en) * 2013-11-25 2014-02-26 太原科技大学 Double-crankshaft damping device of reciprocating electric tool
CN111036684A (en) * 2019-11-08 2020-04-21 东北大学 Servo control method for medium plate hydraulic rolling shear

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EE01 Entry into force of recordation of patent licensing contract

Assignee: Jiangsu Jianghai Machinery Group Co., Ltd.

Assignor: Taiyuan Univ. of Science & Technology

Contract record no.: 2012320000395

Denomination of invention: Single shaft double eccentric asymmetric rolling shearing machine

Granted publication date: 20061108

License type: Exclusive License

Open date: 20060104

Record date: 20120405