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卷板机设计全套含中英文说明书

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卷板机设计全套含中英文说明书

卷板机设计全套含中英文说明书1.4传动系统设计
W12 40X2000型四辊卷板机是以上辊为主动辊,由主电动机通过主减速器联轴器,从而带动上辊工作,下辊的作用是提供一定的向上力,(设该力为夹紧力W),与上辊一起夹紧所卷钢板,使上辊与被卷钢板间产生足够的摩擦力,在上辊旋转时能够带动钢板运动。两个侧辊用以形成卷筒所需的曲率,使板料达到所需的目的。
在我设计的这台四辊卷板机中,我采用了由主电动机通过主减速器以及联轴器,从而带动上辊的旋转。而下辊的运动我采用在下辊的两端各放一个液压缸,通过液压缸内的液压油作用于活塞而使下辊能够实现上下的升降运动,以便夹紧钢板,用液压系统来控制下辊筒的升降以及两个液压缸在上升的过程中保持同步上升。在下辊的两侧设有两个侧辊,两个侧辊分别由两个电动机通过两个单级减速器以及联轴器带动;两个电动机可以分别单独控制也可以同时控制,两个侧辊可以沿着机架导轨做倾斜运动,通过丝杆丝母蜗轮蜗杆传动。
第2章卷板机轴辊受力分析
2.1作用在卷板机辊子上的弯曲扭矩
板料的最大变形弯矩M

板料具有原始曲率半径R1时的初始变形弯矩

式中:截面的形状系数,矩形断面取
材料的相对强化模数,对于30,35钢取
W为横截面的断面模数,矩形截面,(B为材料宽度,为板材的屈服极限,35钢=250MPa);则W=
R为弯曲最小半径,在最大弯矩产生于板材弯成上辊半径时,得到弯曲的最小半径。( ,为上辊直径,mm; B为板材厚度,mm)。
为板材屈服极限=250MPa
为板料由平板( )开始弯曲时的初始变形弯矩
kgfmm
2.2卷板机的空载扭矩
kgfmm
式中: 、 、分别为板料、万向接送和主动辊的重量(kg)
d-------------主动辊轴颈的直径(mm)
------------滑动摩擦系数。用青铜轴套时,取=0.05-0.08
所以对取
则: kgfmm
附录II(外文原文)
3.5 Testing of Tool Life Cost
Machining cost is the sum of the machine tool cost and the cutter cost. The machine cost consists of idle cost, machining cost, and tool changing cost. The machining cost decreases with increased cutting speed; while the idle cost remains constant with changes in cutting speed. From the machining data handbook [24] the generalized machining cost equation is listed below:
In order to determine constants `n' and `C' for the cutting inserts under study in machining 4140 steel and the conditions used in the experiments, a LogV against LogT is drawn and shown for the three types of cutting inserts under study Figure 3-8A, Figure 3-8B are for KC313 under dry and wet conditions, Figure 3-9A, and Figure 3-9B are for KC732. In addition, Figure 3-10A, and Figure 3-10B are for KC5010. It can be seen from the aforementioned figures that in-spite of considerable scatter in test measurements, the results fall reasonably well on a straight line. From the curves it can be seen that for the same cutting speed the tool life increases by increasing the wear criterion and introduction of coolant emulsion for KC313 and KC732. However, as seen in KC5010 tool life increases by increasing the wear criterion and decreases by introducing coolant. This negative behavior of KC5010 toward coolant emulsion and the effect of wear mechanisms behind it will be covered in Chapter 5. As well as the wear kinds on other inserts investigated in this research.

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