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A preparation method for cut-to-length shearing of differential thickness plate

A technology of fixed-length shearing and thickness difference, which is applied in the direction of shearing device, shearing machine equipment, shearing machine control device, etc., can solve the problem of not being able to identify the shape and size of the PLP strip, and achieve the effect of high-precision cutting

Active Publication Date: 2017-02-01
苏州东宝海星金属材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the existing conventional cut-to-length methods cannot identify the outer dimensions of PLP strips, the present invention provides a preparation method for cut-to-length plates with different thicknesses, providing an accurate cutting solution

Method used

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  • A preparation method for cut-to-length shearing of differential thickness plate
  • A preparation method for cut-to-length shearing of differential thickness plate
  • A preparation method for cut-to-length shearing of differential thickness plate

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Experimental program
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Effect test

preparation example Construction

[0051] Such as figure 1 Shown, a kind of difference thick plate cut-to-length preparation method, comprises the following steps:

[0052] Step 1: Determine the initial shear parameters of the differential thick plate, including the target differential thick plate external dimension parameters, PLP strip coil diameter, shear speed, buffer pit buffer strip length, etc.

[0053] Step 2: The annealed PLP strip is coiled and uncoiled on an uncoiler.

[0054] Step 3: The uncoiler is uncoiled and jogged, and the pinch roller before straightening, the straightener, the thickness gauge, the thickness gauge, the pinch roller before shearing, and the hydraulic shear are sequentially threaded, and the pinch rollers are pressed in sequence Strip. The micro tension is established by the uncoiler to make the strip tight and straight, and the hydraulic shear cuts the strip head;

[0055]Step 4: Start automatic cutting. The uncoiler automatically uncoils, the computer control system starts...

Embodiment 1

[0096] The relevant parameters of the system of the present invention are as follows:

[0097] The maximum coil diameter of the uncoiler is 2200mm, and the minimum coil diameter is 560mm; the power of the main motor of the five-roller straightening machine is 18.5kW; the distance between the thickness gauge and the shear line is L 0 =2500mm, the thickness gauge is an X-ray thickness gauge, the measurement range is 0.1-5.0mm, the static accuracy 2σ=±0.10%, the repeatability is ±0.05%, the long-term stability is ±0.05% / 8h; each incremental code The single-turn pulse of the device is 1000. Cutting line feeding speed setting: 0.5m / s.

[0098] Target difference thick plate size: thick zone thickness 1.2mm, length 300mm; transition zone length 50mm; thin zone thickness 0.8mm, length 300mm.

[0099] Actual shearing accuracy: the total error of the cycle length is <±1mm, and the shearing accuracy of the head and tail is less than ±0.5mm.

Embodiment 2

[0101] The relevant parameters of the system of the present invention are as follows:

[0102] The maximum coil diameter of the uncoiler is 2200mm, and the minimum coil diameter is 560mm; the power of the main motor of the five-roller straightening machine is 18.5kW; the distance between the thickness gauge and the shear line is L 0 =2500mm, the thickness gauge is an X-ray thickness gauge, the measurement range is 0.1-5.0mm, the static accuracy 2σ=±0.10%, the repeatability is ±0.05%, the long-term stability is ±0.05% / 8h; each incremental code The single-turn pulse of the device is 1000. Cutting line feeding speed setting: 0.5m / s.

[0103] Target difference thick plate size: thick zone thickness 1.5mm, length 200mm; transition zone length 100mm; thin zone thickness 0.8mm, length 200mm;

[0104] Actual shearing accuracy: the total error of the cycle length is <±1mm, and the shearing accuracy of the head and tail is less than ±0.5mm.

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Abstract

The invention belongs to the technical field of rolling; a target differential thickness plate is obtained by highly-accurate size-determined shearing of rolled stripe materials with thickness changed regularly. A method includes determining primary differential thickness plate shearing parameters; uncoiling the stripe materials with thickness changed regularly through an uncoiling machine, allowing the head of the stripe material to penetrate equipment, allowing clamping and conveying rollers to press the stripe materials sequentially, allowing the uncoiling machine to provide micro tension, allowing a hydraulic shear to shear the head of the stripe materials, and completing the stripe penetration; starting automatic shear control, allowing a control system to recognize the shape and size of the stripe materials with thickness changed regularly automatically, determining the shearing scheme according to the size of the target differential thickness plate, tracking the stripe material conveying length accurately, and completing shearing; allowing the shore differential thickness plate to convey to downstream procedures through a conveying belt after shearing for detection, sorting and packaging. A device comprises the uncoiling machine, clamping and conveying rollers before correction, a correction machine, a shear stripe material buffering pit, clamping rollers of front of a thickness measurement instrument, the thickness measurement instrument, the clamping and conveying rollers before shearing and the hydraulic shear. The clamping and conveying rollers and the uncoiling machine are provided with high-speed pulse encoders; the codes of the high-speed pulse encoders enter the computer control system with signals of the thickness measurement instrument.

Description

technical field [0001] The invention belongs to the technical field of rolling, and in particular relates to a method for preparing a cut-to-length plate with a differential thickness. Background technique [0002] Periodic Longitudinal Profile Strip (Periodic Longitudinal Profile Strip, referred to as: PLP strip) formed by rolling is cut to length and cross-cut, and the obtained differential thickness plate can replace the conventional equal thickness plate, used as automobile body stamping parts, Pipe fittings and surface coverings can effectively reduce the weight of the vehicle body. In order to ensure the quality stability of the differential thick plate in the forming process of automobile parts, the thick zone, thin zone and transition zone of the differential thick plate must have sufficiently high thickness accuracy and length accuracy. A key issue is that it is necessary to re-identify the outline dimensions of each cycle of the incoming PLP strip with high precis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23D15/00B23D36/00
CPCB21B15/0007
Inventor 吴志强刘相华胡贤磊孙涛支颖彭良贵
Owner 苏州东宝海星金属材料科技有限公司
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