CN1283403C - Single shaft double eccentric asymmetric rolling shearing machine - Google Patents
Single shaft double eccentric asymmetric rolling shearing machine Download PDFInfo
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- CN1283403C CN1283403C CN 200510012654 CN200510012654A CN1283403C CN 1283403 C CN1283403 C CN 1283403C CN 200510012654 CN200510012654 CN 200510012654 CN 200510012654 A CN200510012654 A CN 200510012654A CN 1283403 C CN1283403 C CN 1283403C
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- shearing
- shearing machine
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Abstract
The present invention belongs to the technical field of a rolled steel mechanical auxiliary device, and particularly relates to a technical improvement of the mounting position of a crank shaft in a rolling type steel plate shearing machine. The rolling type steel plate shearing machine comprises a machine frame 11, a right and a left crank link mechanisms arranged on the machine frame, a circular arc upper shearing edge 1 arranged on an upper knife holder 2, and a lower shearing edge 15 arranged on a lower edge platform 16. The rolling type steel plate shearing machine is characterized in that the center lines O 2-O 2 of two cranks 6, 9 arranged on a crankshaft 7 offset with the distance OS from 20 to 100mm from the center line O1-O1 of the machine frame, and form a dissymmetrical structure with the center line O1-O1 of the machine frame. When the upper shearing edge is positioned at a maximal opening position, two connecting rods 5, 10 form an included angle with a vertical plane positioned by the center line O1-O1 of the machine frame. Compared with the prior art, the moving track of the circular arc shearing edge of the present invention much approaches to pure rolling, and the shearing machine has complete and reasonable stress. The stressed torque of the whole shearing mechanism is lower than the original stressed torque, the shearing quality of steel plates is greatly enhanced, and the service life of the knife is greatly prolonged.
Description
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
3?sin(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.Wherein the smallest offset distance is 20mm between two center lines, and the peak excursion distance is 100mm.
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---be the hinged point of asymmetric front crankshaft and connecting rod;
A '---be asymmetric back bent axle and the hinged point of connecting rod;
β---be asymmetric connecting rod and horizontal plane angle;
L
3---length of connecting rod;
Ad, a ' d---connecting rod;
F1---act on the power on the steel plate before structure is asymmetric;
F2---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
3?sin((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.Wherein, according to parameter beta and L
3Different values, smallest offset distance be 20mm between two center lines, peak excursion is apart from being 100mm.
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 bent axle 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) and (9) center line O on the bent axle (7)
2-O
2With respect to frame central line O
1-O
1Offset distance 0S calculates by following formula:
OS＝L
3sin(90°-β)
In the formula:
β---be asymmetric connecting rod and horizontal plane angle;
L
3---length of connecting rod;
2, the asymmetric rolling shearing machine of single shaft double eccentric according to claim 1 is characterized in that for different pull bar parameter value β, L
3, offset distance OS is 20～100mm.
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 CN1714969A (en) | 2006-01-04 |
| CN1283403C true CN1283403C (en) | 2006-11-08 |
Family
ID=35821291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510012654 Active CN1283403C (en) | 2005-07-04 | 2005-07-04 | Single shaft double eccentric asymmetric rolling shearing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283403C (en) |
Families Citing this family (4)
| 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 |
| CN103603909B (en) * | 2013-11-25 | 2016-02-17 | 太原科技大学 | A kind of double-crankshaft damping device of reciprocating electric tool |
| CN111036684B (en) * | 2019-11-08 | 2020-12-08 | 东北大学 | Servo control method for medium plate hydraulic rolling shear |
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2005
- 2005-07-04 CN CN 200510012654 patent/CN1283403C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1714969A (en) | 2006-01-04 |
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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 |