CN110788382B - Two-way round steel cutter of pneumatic cylinder drive link mechanism - Google Patents
Two-way round steel cutter of pneumatic cylinder drive link mechanism Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 95
- 239000010959 steel Substances 0.000 title claims abstract description 95
- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000010008 shearing Methods 0.000 claims abstract description 142
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims description 46
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
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- 238000000034 method Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009865 steel metallurgy Methods 0.000 description 2
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- 238000000265 homogenisation Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/04—Shearing machines or shearing devices cutting by blades which move parallel to themselves having only one moving blade
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
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Abstract
本发明涉及一种液压缸驱动连杆机构的双向圆钢剪切机,主要包括液压动力装置、传动装置、剪切装置、机架、上、下布置的双层输送辊道及侧向夹紧装置,其特征在于:剪切装置包括两固定刀台、双切活动刀台以及固定在刀台上的两种圆钢剪切弧形剪刃;其中,传动装置中的两个上连杆固定在机架上,在侧向夹紧装置的配合下,圆钢组由上、下布置的双层输送辊道输送至固定刀台特定的剪切位置;在液压动力装置的带动下,固连在传动装置下连杆端部的双切活动刀台的下行、上行分别剪切下圆钢组与上圆钢组。本发明所给出的半圆弧形的分段式圆弧形剪刃,在改善剪刃受力的同时,有效提高了圆钢的剪切质量。
The invention relates to a bidirectional round steel shearing machine with a hydraulic cylinder driving a link mechanism, which mainly includes a hydraulic power device, a transmission device, a shearing device, a frame, a double-layer conveying roller table arranged on the upper and lower sides, and a lateral clamping device. The device is characterized in that: the shearing device includes two fixed knife rests, a double-cut movable knife rest, and two kinds of round steel shearing arc shearing edges fixed on the knife rests; wherein, the two upper links in the transmission device are fixed On the frame, with the cooperation of the lateral clamping device, the round steel group is transported by the upper and lower double-layer conveying rollers to the specific shearing position of the fixed knife table; The lower and upper round steel groups are respectively cut in the downward and upward directions of the double-cut movable knife table at the end of the lower connecting rod of the transmission device. The semi-circular arc-shaped segmented arc-shaped shearing blade provided by the invention effectively improves the shearing quality of the round steel while improving the force of the shearing blade.
Description
技术领域technical field
本发明属于圆钢剪切技术领域,具体涉及一种液压缸驱动连杆机构的双向圆钢剪切机。The invention belongs to the technical field of round steel shearing, and in particular relates to a bidirectional round steel shearing machine with a hydraulic cylinder driving a link mechanism.
技术背景technical background
钢铁冶金工业生产中,我们通常应用高度自动化的冷剪机对来料进行头、尾及定尺寸剪切以满足生产生活对圆钢端面产量、形貌及尺寸的要求。圆钢冷剪机在剪切设备中占有很大比重,在车辆工程、钢铁冶金以及机械制造等行业有广阔的应用前景。但是目前在市场上应用的圆钢冷剪机仍存在一定缺陷,比如大多数剪切机仍应用传统的电机驱动,剪切机构结构较为复杂,剪切效率比较低,剪切出来的产品的质量也不是很高。对于剪切机来说,最常见的故障就是联接紧固件的松动以及连杆、推力杆等零件的销轴等连接件的磨损。在剪切机构中常见的事故是连杆等零件的弯曲、折断等问题。这些现象严重影响剪切机的使用寿命,导致现有的剪切机存在如下不良现象:In the production of iron and steel metallurgy industry, we usually use a highly automated cold shearing machine to cut the incoming material at the head, tail and size to meet the production and life requirements for the output, shape and size of the round steel end face. Round steel cold shearing machine occupies a large proportion in shearing equipment, and has broad application prospects in vehicle engineering, iron and steel metallurgy and machinery manufacturing industries. However, the round steel cold shears currently used in the market still have certain defects. For example, most shears are still driven by traditional motors. The structure of the shearing mechanism is relatively complex, the shearing efficiency is relatively low, and the quality of the sheared products is high. Not very high either. For the shearing machine, the most common faults are the loosening of the connecting fasteners and the wear of the connecting parts such as the pins of the connecting rods, thrust rods and other parts. Common accidents in shearing mechanisms are bending and breaking of connecting rods and other parts. These phenomena seriously affect the service life of the shearing machine, resulting in the following undesirable phenomena in the existing shearing machine:
1、剪切装置中剪刃直接与待剪圆钢接触,承受全部的剪切力,使其经常出现磨损现象,其表面出现局部凹坑、产生裂纹,甚至折断等现象;1. In the shearing device, the shearing edge is in direct contact with the round steel to be sheared, and bears all the shearing force, which often causes wear and tear, and local pits, cracks, and even fractures appear on the surface;
2、当液压技术应用于剪切力过大的大型剪切机时,换向如果太快,则会造成液压冲击,严重损伤液压元件,故现阶段的液压剪都会延长换向时间来减弱冲击对液压元件的损害,这又使生产效率受到了很大程度的制约,而液压缸提供大推力时又会使得液压系统工作压力很高,对液压系统内的各个零件密封要求极高,维修成本昂贵;2. When the hydraulic technology is applied to a large shearing machine with excessive shear force, if the reversing is too fast, it will cause hydraulic shock and seriously damage the hydraulic components. Therefore, the current hydraulic shears will prolong the reversing time to weaken the shock. The damage to the hydraulic components has greatly restricted the production efficiency. When the hydraulic cylinder provides a large thrust, the working pressure of the hydraulic system will be very high. expensive;
3、传统的剪切机在一个完整的剪切过程中只在向下剪切行程中起作用,而在回程时剪切机构并不发挥剪切作用,这相当于在一个完整的剪切过程中有一半的时间被“浪费”。3. The traditional shearing machine only works in the downward shearing stroke during a complete shearing process, and the shearing mechanism does not play a shearing role during the return stroke, which is equivalent to a complete shearing process. Half of the time is "wasted".
发明内容SUMMARY OF THE INVENTION
针对上述技术问题,本发明的目的在于提供一种液压缸驱动连杆机构的双向圆钢剪切机,通过双切活动刀台的上下两组剪刃在一个完整剪切过程中实现两次剪切行为,通过分段式多段弧形刃口的弧形剪刃组的设计,不同弧段的依次发挥作用共同完成圆钢组的剪切过程,优化了剪刃受力状态,提高了圆钢的剪切质量。In view of the above-mentioned technical problems, the purpose of the present invention is to provide a bidirectional round steel shearing machine with a hydraulic cylinder driving link mechanism, which realizes two shearing in a complete shearing process through the upper and lower two sets of shearing edges of the double-cutting movable knife table. Through the design of the arc-shaped shearing blade group with the segmented multi-segment arc-shaped cutting edge, different arcs play their roles in sequence to complete the shearing process of the round steel group, optimize the force state of the shearing blade, and improve the round steel. cut quality.
为实现上述目的,本发明所采取的技术方案是:提供一种液压缸驱动连杆机构的双向圆钢剪切机,应用装备分段式多段弧形刃口的弧形剪刃对圆钢进行剪切进而获得高质量的剪切断面。剪切装置的上行与下行均能完成剪切动作,实现圆钢的高效率剪切。具体操作是采用双液压缸驱动装配在双切活动刀台上的对称的分段式多段弧形剪刃组的圆钢剪切装置及特定的剪切方法。In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is to provide a two-way round steel shearing machine with a hydraulic cylinder-driven connecting rod mechanism, and use the arc-shaped shearing edge equipped with a segmented multi-segment arc-shaped cutting edge to carry out the cutting operation on the round steel. Shear to obtain high-quality shear sections. Both the upward and downward movements of the shearing device can complete the shearing action to achieve high-efficiency shearing of round steel. The specific operation is to use double hydraulic cylinders to drive the round steel shearing device and specific shearing method of the symmetrical segmented multi-segment arc-shaped shearing blade group assembled on the double-cut movable knife table.
本发明的结构主要包括液压动力装置、传动装置、剪切装置、机架、上、下布置的双层输送辊道及侧向夹紧装置,剪切装置包括两固定刀台、双切活动刀台以及固定在刀台上的两种圆钢剪切弧形剪刃;其中,传动装置中的两个上连杆固定在机架上,在侧向夹紧装置的配合下,圆钢组由上、下布置的双层输送辊道输送至固定刀台特定的剪切位置。在液压动力装置的带动下,固连在传动装置下连杆端部的双切活动刀台的下行、上行分别剪切下圆钢组与上圆钢组。The structure of the invention mainly includes a hydraulic power device, a transmission device, a shearing device, a frame, a double-layer conveying roller table arranged on the upper and lower sides, and a side clamping device. The shearing device includes two fixed knife tables, a double-cut movable knife Table and two kinds of round steel shearing arc-shaped shearing blades fixed on the knife table; among them, the two upper links in the transmission device are fixed on the frame, and with the cooperation of the lateral clamping device, the round steel group is composed of The upper and lower double-layer conveying rollers are conveyed to the specific shearing position of the fixed knife table. Driven by the hydraulic power device, the downward and upward movements of the double-cut movable tool rest fixed on the end of the lower connecting rod of the transmission device cut the lower round steel group and the upper round steel group respectively.
所述液压动力装置为两台卧式安放的液压缸,其通过销轴铰接的方式对称安装在机架两侧,两液压缸活塞杆末端分别与传动装置中的横杆铰接;液压缸为活塞式双作用油缸,能够在不同的剪切阶段通过控制两个油口进出油方向来控制油缸的推拉行为。The hydraulic power device is two horizontally placed hydraulic cylinders, which are symmetrically installed on both sides of the frame by means of pin shaft hinges. The double-acting oil cylinder can control the push-pull behavior of the oil cylinder by controlling the oil inlet and outlet directions of the two oil ports in different shearing stages.
所述剪切装置包括两固定刀台、双切活动刀台以及固定在刀台上的两种圆钢剪切弧形剪刃;其中,上固定刀台与下固定刀台均固定在机架上,且两固定刀台上装有半圆弧形刃口的圆弧剪刃组,其主要作用为对圆钢进行定位、剪切;双切活动刀台上、下均装有分段式弧形刃口的圆弧剪刃组,在传动装置的作用下完成同步往复剪切动作。The shearing device includes two fixed knife blocks, a double-cut movable knife block, and two kinds of round steel shearing arc cutting edges fixed on the knife blocks; wherein, the upper fixed knife block and the lower fixed knife block are both fixed on the frame. On the upper and lower sides of the double-cut movable knife table, there are arc shearing blade sets with semi-circular arc-shaped cutting edges, which are mainly used for positioning and shearing the round steel; The circular arc shearing blade group of the cutting edge completes the synchronous reciprocating shearing action under the action of the transmission device.
所述侧向夹紧装置外侧压板及内侧压板均开有一组圆弧形卡槽,由左右两个单作用夹紧缸驱动,用以使圆钢在剪切过程中更接近于完全夹紧状态,提高剪切质量。The outer and inner pressing plates of the lateral clamping device are both provided with a set of arc-shaped clamping grooves, which are driven by two single-acting clamping cylinders on the left and right, so as to make the round steel closer to a fully clamped state during the shearing process. , to improve the cut quality.
所述上、下布置的双层输送辊道为上下布置的两组圆钢输送辊道,由电机独立控制。The upper and lower double-layer conveying rollers are two sets of round steel conveying rollers arranged up and down, which are independently controlled by motors.
所述双切活动刀台,由双平行四边形形状的连杆传动机构带动做往复剪切运动;双切活动刀台上、下各装有分段式多段弧形刃口的弧形剪刃组,其中,上方弧形组剪刃的长度为下方弧形剪刃组的1/2~3/5。The double-cut movable knife table is driven by a double-parallelogram-shaped connecting rod transmission mechanism to perform a reciprocating shearing motion; the upper and lower parts of the double-cut movable knife table are equipped with segmented multi-segment arc-shaped cutting edge groups. , wherein the length of the upper arc-shaped group of shearing blades is 1/2 to 3/5 of the lower arc-shaped shearing blade group.
所述分段圆弧形剪刃组的剪刃刃口为三段圆弧组成,其中两侧为凸弧,中间为凹弧,在不同的剪切阶段各自承担剪切工作;在圆钢剪切过程中的裂纹萌生、扩展阶段,凸弧起主导作用;在圆钢切断过程中凹弧起主导作用。The cutting edge of the segmented arc-shaped shearing blade group is composed of three arcs, of which two sides are convex arcs, and the middle is a concave arc, and they undertake shearing work in different shearing stages; In the crack initiation and propagation stage during the cutting process, the convex arc plays a leading role; in the round steel cutting process, the concave arc plays a leading role.
一种液压缸驱动连杆机构的双向圆钢剪切机,其具体剪切过程为:A two-way round steel shearing machine driven by a hydraulic cylinder driving link mechanism, the specific shearing process is as follows:
(1)下圆钢组被剪切位置为初始工位,此时左液压缸提供推力,右液压缸提供拉力;下侧向夹紧装置的左夹紧缸提供拉力,右夹紧缸提供推力,下圆钢组由下侧向夹紧装置夹紧,上圆钢组由上辊道向前输送至剪切位置;(1) The sheared position of the lower round steel group is the initial station, at this time the left hydraulic cylinder provides thrust, and the right hydraulic cylinder provides tension; the lower side provides tension to the left clamping cylinder of the clamping device, and the right clamping cylinder provides thrust , the lower round steel group is clamped by the lower side clamping device, and the upper round steel group is transported forward by the upper roller table to the shearing position;
(2)下圆钢组完成剪切后,此时剪切机构运动到最低点,上圆钢组由上辊道向前输送至剪切位置;下侧向夹紧装置卸载(左夹紧缸提供推力,右夹紧缸提供拉力),上侧向夹紧装置的左夹紧缸提供拉力,右夹紧缸提供推力,上圆钢组由上侧向夹紧装置夹紧;左液压缸仍提供推力,右液压缸仍提供拉力,完成上圆钢组的剪切,下圆钢组由下辊道向前输送至剪切位置;(2) After the lower round steel group is sheared, the shearing mechanism moves to the lowest point at this time, and the upper round steel group is transported forward from the upper roller table to the shearing position; the lower side is unloaded to the clamping device (left clamping cylinder Provide pushing force, right clamping cylinder provides pulling force), the upper side provides pulling force to the left clamping cylinder of the clamping device, the right clamping cylinder provides pushing force, and the upper round steel group is clamped by the upper side clamping device; the left hydraulic cylinder is still Provide thrust, the right hydraulic cylinder still provides pulling force to complete the shearing of the upper round steel group, and the lower round steel group is transported forward from the lower roller table to the shearing position;
(3)上圆钢组完成剪切后,此时剪切机构运动到最高点,上侧向夹紧装置卸载(左夹紧缸提供推力,右夹紧缸提供拉力);下侧向夹紧装置的两夹紧缸不换向,第二下圆钢组由下侧向夹紧装置夹紧;左液压缸提供拉力,右液压缸提供推力,剪切第二下圆钢组;(3) After the upper round steel group is sheared, the shearing mechanism moves to the highest point at this time, and the upper side is unloaded to the clamping device (the left clamping cylinder provides thrust, and the right clamping cylinder provides tension); the lower side clamps The two clamping cylinders of the device are not reversed, and the second lower round steel group is clamped by the lower side to the clamping device; the left hydraulic cylinder provides the pulling force, and the right hydraulic cylinder provides the thrust force to cut the second lower round steel group;
(4)上侧向夹紧装置的两夹紧缸不换向,第二上圆钢组由上侧向夹紧装置夹紧。左液压缸仍提供拉力,右液压缸仍提供推力,对第二上圆钢组进行剪切。(4) The two clamping cylinders of the upper lateral clamping device are not reversed, and the second upper round steel group is clamped by the upper lateral clamping device. The left hydraulic cylinder still provides pulling force, and the right hydraulic cylinder still provides pushing force to cut the second upper round steel group.
重复上述剪切动作,即可在一个完整的剪切过程(剪切装置右行、左行)中实现了“下剪”及“上剪”各两组圆钢。By repeating the above-mentioned shearing action, two sets of round bars of "lower shear" and "upper shear" can be realized in a complete shearing process (right row and left row of the shearing device).
圆钢通过上下布置的双层辊道运输至待剪切位置,下辊道先运送圆钢至剪切位置,侧向夹紧装置将圆钢压紧,由双切活动刀台进行剪切,待传动机构带动双切活动刀台上行时,上辊道与侧向夹紧装置同样进行上述动作,完成一个周期的剪切动作。The round bar is transported to the position to be sheared through the double-layer roller table arranged up and down, the lower roller table first transports the round bar to the shearing position, the side clamping device presses the round bar, and the double-cut movable knife table is used for shearing. When the transmission mechanism drives the double-cut movable knife table to go up, the upper roller table and the lateral clamping device perform the above actions in the same way to complete a cycle of shearing action.
分段式弧形刃口的剪刃形状设计是这样实现的:圆钢的剪切过程共分为弹性变形阶段、塑性变形阶段、裂纹的产生、滑移扩张直至圆钢与切头断裂分离,在圆钢剪切区域由塑性变形转为微裂纹产生瞬时剪切力达到最大值;由于圆钢在剪刃接触圆钢时瞬间即进入塑性变形状态,故忽略弹性变形的影响,由于侧向夹紧装置的作用,使圆钢接近于完全夹紧状态,使上下剪刃切入圆钢的深度趋于一致。当使用平刃剪时,切入深度为e时,剪切力最大,圆钢开始断裂。剪切面积为:The design of the cutting edge shape of the segmented arc edge is realized as follows: the shearing process of the round steel is divided into elastic deformation stage, plastic deformation stage, crack generation, slip expansion until the round steel is broken and separated from the cutting head. In the shearing area of the round steel, the instantaneous shear force reaches the maximum value from plastic deformation to micro-cracks; since the round steel enters the state of plastic deformation instantly when the shearing edge contacts the round steel, the influence of elastic deformation is ignored. The action of the tightening device makes the round steel close to a fully clamped state, so that the depths of the upper and lower shearing edges cutting into the round steel tend to be consistent. When using flat blade shears, when the cutting depth is e, the shearing force is the largest, and the round steel begins to break. The clipping area is:
为使圆钢剪刃在剪切过程中实现“省力”效果,且使剪刃刃口在圆钢塑性变形阶段受力合理,刃口侧面设计为左右对称的两段凸弧。为节约剪刃材料,避免稀贵金属的不必要的浪费,过凸弧的起点的直线与与圆钢外圆的另一焦点为。与圆钢外圆方程联立求解点。为使剪断后的圆钢有良好的表面质量,减少撕裂面积,故按照“剪切塑性变形面积均匀化”原则进行计算,即:In order to realize the "labor saving" effect of the round steel cutting edge in the shearing process, and to make the cutting edge of the cutting edge bear reasonable force during the plastic deformation stage of the round steel, the side of the cutting edge is designed as two convex arcs with left and right symmetry. In order to save the material of the cutting edge and avoid unnecessary waste of precious metals, the straight line passing the starting point of the convex arc and the other focus of the outer circle of the round steel are. Simultaneous solution point with the round bar outer circle equation. In order to make the sheared round steel have good surface quality and reduce the tearing area, the calculation is carried out according to the principle of "homogenization of shear plastic deformation area", namely:
若已知圆钢材料与半径R,则可求取θ。If the round steel material and radius R are known, θ can be obtained.
由实际生产可知,由于圆钢在剪切过程中发生流变以及弯曲现象,故主动刀的行程是固定刀行程的2.01~2.25倍。下面求取c点坐标以及ac和bc的长度。It can be seen from the actual production that due to the rheology and bending of the round steel during the shearing process, the stroke of the active knife is 2.01 to 2.25 times that of the fixed knife. Next, find the coordinates of point c and the lengths of ac and bc.
综上,若已知被剪圆钢规格(半径)、圆钢材料,通过下组公式得到分段弧形剪刃的凸弧弧形:To sum up, if the specification (radius) of the round steel to be sheared and the material of the round steel are known, the convex arc of the segmented arc shearing edge can be obtained by the following formula:
其中,θ——凸弧的弦与以圆钢中心为坐标原点的坐标系的横轴的交点;Among them, θ——the intersection of the chord of the convex arc and the horizontal axis of the coordinate system with the center of the round steel as the coordinate origin;
e——圆钢断裂时的切入深度,与圆钢材料有关;e——the cutting depth when the round steel is broken, which is related to the material of the round steel;
K——上剪刃行程系数,K=1.13~1.57;K——the stroke coefficient of the upper shearing blade, K=1.13~1.57;
R——圆钢半径;R - radius of round steel;
R1——凸弧半径;R 1 —— radius of convex arc;
n——凸弧横坐标;n——abscissa of convex arc;
m——凸弧纵坐标。m——the ordinate of the convex arc.
双切活动刀台上下两侧均布置弧形剪刃,一次完整的剪切过程能够实现四组圆钢的剪切,同时,通过布置不同多段弧形刃口形状的剪刃,还能实现在同一剪切过程中剪切两种不同规格的圆钢,极大提高了圆钢剪切效率。采用“两凸弧+一凹弧”形式的多段弧形刃口组成的组合剪刃,能够改善圆钢剪切质量,同时使弧形剪刃受力合理,增强“省力”效果。Arc-shaped shearing edges are arranged on the upper and lower sides of the double-cut movable knife table. A complete shearing process can realize the shearing of four groups of round steel. Two kinds of round bars of different specifications are sheared in the same shearing process, which greatly improves the round bar shearing efficiency. The combined shearing edge composed of multi-segment arc-shaped edges in the form of "two convex arcs + one concave arc" can improve the shearing quality of round steel, and at the same time make the arc-shaped shearing edge reasonable in force and enhance the "labor saving" effect.
本发明的有益效果是:本剪切机的动力来源于两个对称布置的卧式液压缸,推动动力装置运用,进而推动上刀进行上切式剪切运动,两液压缸同时作用,不仅能够提供更大的动力,每个缸的活塞杆的伸缩过程中都能带动圆钢剪进行剪切作用,不需要频繁地进行换向,有效解决了液压油缸换向困难以及液压缸提供大推力时液压系统工作压力过高的问题。The beneficial effects of the invention are: the power of the shearing machine comes from two symmetrically arranged horizontal hydraulic cylinders, which pushes the power device to be used, and then pushes the upper knife to perform the upper-cutting shearing motion. The two hydraulic cylinders act at the same time, not only can Provides greater power, and the circular steel shears can be driven to perform shearing action during the expansion and contraction of the piston rod of each cylinder, without frequent reversing, which effectively solves the difficulty of reversing the hydraulic cylinder and when the hydraulic cylinder provides a large thrust The problem that the working pressure of the hydraulic system is too high.
附图说明Description of drawings
图1为本发明中所涉及的圆钢剪切机构主要部件图;Fig. 1 is the main component diagram of the round steel shearing mechanism involved in the present invention;
图2为本发明中所涉及的圆钢剪切机构主要部件图Ⅱ。FIG. 2 is a diagram II of the main components of the round steel shearing mechanism involved in the present invention.
图3为侧向夹紧装置示意图;Figure 3 is a schematic diagram of a lateral clamping device;
图4为双切活动刀台多段弧形剪刃剪切圆钢示意图;Fig. 4 is the schematic diagram of the multi-segment arc-shaped shearing edge shearing round steel of the double-cut movable knife station;
图5为弧形剪刃示意图;Figure 5 is a schematic diagram of an arc-shaped shearing blade;
图6为剪切过程示意图。Figure 6 is a schematic diagram of the shearing process.
图中:1、机架;2、左液压缸;3、右液压缸;4、上固定刀台;5、上圆钢组;6、下圆钢组;7、上弧形剪刃组;8、双切活动刀台;9、下弧形剪刃组;10、下固定刀台;11、上辊道;12、上侧向夹紧装置;13、圆钢切头;14、下侧向夹紧装置;15、下辊道;16、左夹紧缸;17、右夹紧缸;18、外侧压板;19、内侧压板;20、圆钢。In the figure: 1. Frame; 2. Left hydraulic cylinder; 3. Right hydraulic cylinder; 4. Upper fixed knife table; 5. Upper round steel group; 6. Lower round steel group; 7. Upper arc shearing blade group; 8. Double-cut movable knife table; 9. Lower arc cutting blade group; 10. Lower fixed knife table; 11. Upper roller table; 12. Upper lateral clamping device; 13. Round steel cutting head; 14. Lower side To clamping device; 15, lower roller table; 16, left clamping cylinder; 17, right clamping cylinder; 18, outer platen; 19, inner platen; 20, round steel.
具体实施方式Detailed ways
以下通过实例对本申请进行说明,如图1-4所示,本发明提供一种双液压缸驱动的高质量、高效率剪切圆钢的装置,具有传动装置,剪切机构、侧向夹紧装置和传动装置;刀台布置两种形式的弧形剪刃:双切活动刀台8的上、下两侧均布置刃口为分段、多段弧形的剪刃,剪切机构由上固定刀台4、双切活动刀台8、下固定刀台10以及固定在刀台上的剪刃组成;上、下固定刀台分别固定在机架1上,双切活动刀台8与传动机构铰接;侧向夹紧装置外侧压板及内侧压板均开有一组圆弧形卡槽,由左右两个单作用夹紧缸驱动,用以使圆钢20在剪切过程中更接近与完全夹紧状态,提高剪切质量;传动装置采用连杆机构,具体是双平行四边形传动机构,包括上刀架与机架间的两组连杆,两组连杆的两个铰接点由一横杆连接,构成了上、下两组平行四边形机构,在左右两个双作用液压缸液压缸的作用下为剪切机构提供剪切力;如图5所示,分段式弧形刃口为三段圆弧组成,其中两侧为凸弧,中间为凹弧,在不同的剪切阶段各自承担剪切工作;在剪切过程中的塑性变形阶段凸弧起主导作用,在裂纹萌生扩展断裂阶段,凹弧承担剪切工作。The application will be described below through examples. As shown in Figures 1-4, the present invention provides a high-quality and high-efficiency device for shearing round steel driven by double hydraulic cylinders, which has a transmission device, a shearing mechanism, and a lateral clamping device. Device and transmission device; two types of arc-shaped shearing edges are arranged on the knife table: the upper and lower sides of the double-cut movable knife table 8 are equipped with segmented and multi-segment arc-shaped shearing edges, and the shearing mechanism is fixed from the top. The knife table 4, the double-cut movable knife block 8, the lower fixed knife block 10 and the cutting edge fixed on the knife block are composed; the upper and lower fixed knife blocks are respectively fixed on the frame 1, the double-cut movable knife block 8 and the transmission mechanism Hinged; both the outer and inner pressing plates of the lateral clamping device have a set of arc-shaped clamping grooves, which are driven by the left and right single-acting clamping cylinders to make the round steel 20 closer and completely clamped during the shearing process state and improve the shearing quality; the transmission device adopts a link mechanism, specifically a double parallelogram transmission mechanism, including two sets of links between the upper tool rest and the frame, and the two hinge points of the two sets of links are connected by a cross bar , which constitutes the upper and lower groups of parallelogram mechanisms, which provide shearing force for the shearing mechanism under the action of the left and right double-acting hydraulic cylinders; as shown in Figure 5, the segmented arc edge is three It is composed of circular arcs, of which two sides are convex arcs, and the middle is concave arc, which undertakes shearing work in different shearing stages; in the plastic deformation stage of the shearing process, the convex arc plays a leading role, and in the crack initiation, propagation and fracture stage, The concave arc undertakes the shearing work.
如图6所示,一种应用分段弧形刃高效率高质量剪切圆钢的方法是这样实现的:As shown in Figure 6, a method for high-efficiency and high-quality shearing of round steel with segmented arc blades is achieved as follows:
(1)下圆钢组6即将被剪切位置为初始工位,此时左液压缸2提供推力,右液压缸3提供拉力;下侧向夹紧装置14的左夹紧缸16提供拉力,右夹紧缸17提供推力,下圆钢组6由下侧向夹紧装置14夹紧,上圆钢组5由上辊道11向前输送至剪切位置;(1) The position where the lower
(2)下圆钢组6完成剪切后,此时剪切机构运动到最低点,上圆钢组5由上辊道11向前输送至剪切位置;下侧向夹紧装置14卸载,上侧向夹紧装置12的左夹紧缸16提供拉力,右夹紧缸17提供推力,上圆钢组5由上侧向夹紧装置12夹紧;左液压缸16仍提供推力,右液压缸17仍提供拉力,完成上圆钢组5的剪切,下圆钢组6由下辊道15向前输送至剪切位置;(2) After the lower
(3)上圆钢组4完成剪切后,此时剪切机构运动到最高点,下圆钢组6由下侧向夹紧装置 14夹紧,此时左液压缸16提供推力,右液压缸17提供拉力,重复上述剪切动作,在一个完整的剪切过程中实现了“下剪”及“上剪”两组圆钢,极大地提升了剪切效率。(3) After the upper
基于本发明中的方案,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它方案,都属于本发明保护的范围。Based on the solutions in the present invention, all other solutions obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
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