夹紧

In order to make clamping and unclamping fast, make the traditionalwhorl into hydraulic transmission, the fixation of the activitypincers depend on embracing activity pincers body firmly throughfrictional force comes by the brake handle driving steel band brakelump.

为了实现快速夹紧与快速松开，将传统的螺纹改成液压传动，活动钳身的固定通过刹车手柄来带动钢带刹车块通过摩擦力来抱死活动钳身，从而实现活动钳身的快速移动，而夹紧力则由夹紧弹簧来保证。

In order to make clamping and unclamping fast, make the traditional whorl into hydraulic transmission, the fixation of the activity pincers depend on embracing activity pincers body firmly through frictional force comes by the brake handle driving steel band brake lump. That realizes the fast movement of the activity pincers body, while clamped strength guaranteed by clamping the spring.

为了实现快速夹紧与快速松开，将传统的螺纹改成液压传动，活动钳身的固定通过刹车手柄来带动钢带刹车块通过摩擦力来抱死活动钳身，从而实现活动钳身的快速移动，而夹紧力则由夹紧弹簧来保证。

On the foundation of the reasonable fixed position, according to process the process in of be subjected to the dint appearance and clip the tight dint to arrange the principle, drawing up to clip the tight dint to arrange the project reasonablely;Passing the related calculation formula, cliping the tight dint size to carry on estimate towards process in the process, choosing the size structure to clip the tight motive component reasonablely, according to an oneself of work structure and processed requests and process to be characteristics by the dint in the process, choosing the design to clip the tight organization to guarantee by attain that the work piece positions accurate reasonablely, fast .

在合理定位的基础上，根据加工过程中的受力状态和夹紧力的布置原则，来制定夹紧力合理的布置方案；通过相关计算公式，对加工过程中夹紧力大小进行估算，来选择尺寸结构合理的夹紧动力元件，根据工件自身结构和加工的要求以及加工过程中受力的特点，来选择设计合理的夹紧机构以达到保证工件的定位的准确，快速。

If the gap is too large, when the cylinder pressure cannot be effective to brake-workholders, causing tension too small, resulting in a post by floating roll drawn paper tape under; if the gap is too small, the cylinder is always workholders, brake cylinder pressure cannot adjust the brake pad and brake disk workholders degrees, and there will be draggle the paper tape.

如果间隙过大，当气缸气压变化时不能有效地将刹车片夹紧，导致张力过小，造成开机时浮动辊突然被拉下将纸带绷断；如果间隙过小，则气缸始终将刹车片夹紧，气缸气压变化不能调整刹车片与刹车盘的夹紧程度，最终会将纸带拉断。

Front-end floating pneumatic power chuck, with combined functions of self-centering clamp and floating compensation clamp, is used for machining of pipe end.

前置式气动浮动动力卡盘是集自定心夹紧和浮动补偿式夹紧二功能于一身，用于管道的端头加工，加工笔直管道时，使用自定心夹紧功能；加工的管道若有弯曲变形或加工弯管端头时，则采用定心卡盘辅助定心，用本卡盘的浮动夹紧功能夹紧管子后，退开定心卡盘再加工管子端头。

Traditional fixing method of the spring causes measuring error and it's unallowable for this miniature spring. So the whole measuring instrument is designed systematically and the development of new fixing and positioning devices are focused on. The new fixture method is analyzed by FEA and results are good.

随后各章论述了新型刚度测试仪器的研制过程，对于传统弹簧的安装夹紧方式在刚度测试中引起的测量误差进行了分析，对于微小型扭转弹簧的刚度测试而言，这是不能允许的超大误差，为此，在系统地设计完成了整体测试装置的基础上，重点研制了新颖的弹簧的定位夹紧结构，对于该定位夹紧结构方案也利用有限元分析软件进行了仿真分析，结果表明比较理想。

According to work piece size, characteristic and its material choice cutting specifications; Because of the thick mill diesel engine cylinder body two sides, then the jig design use "two sells the localization at the same time", Manual clamps, an attire clamps processes the diesel engine to be mad the cylinder body two sides; according to will work receives the cutting force to calculate clamps the strength; again according to clamps the strength , choose the determination clamp the special-purpose part.

由于是粗铣柴油机气缸体两侧面，则夹具的设计采用&一面两销&定位，手动夹紧，一次装夹加工柴油机气缸体的两个侧面，保证了加工精度，提高了生产效率；根据工作将受到切削力来计算夹紧力；再根据夹紧力来选择确定夹紧装置的专用部件。

According to the way of the selection principle , discharge head and V block is selected to clamp the part .Then Computation of the strength is achieved by carrying on through the cutting force clamps .

根据夹紧方式的选择原则选择夹紧元件为压板压头和V型块，然后通过切削力进行夹紧力的计算。

By means of theoretic analysis and experimental investigation,the clamping efficiency behavior of power-operated wedge hook chuck is studied.

对楔面动力卡盘的夹紧效率特性进行了理论分析和实验研究，建立了楔面动力卡盘夹紧效率的数学模型，研究了夹紧传动机构摩擦系数、楔面角度、卡盘工作参数以及连续重复夹紧次数等参数对夹紧效率的影响规律，对卡盘的优化设计和应用以及夹紧力计算具有指导意义。

Enormous kinds of hub in different shapes are fastened and located by the chuck in various ways, such as fastened with external swing pressure plate and internal hook pressure plate (pressure plate to rotate by 90° to facilitate loading/offloading of workpiece), gripped with claw, and fixed positioning and moveable positioning, etc.

轮毂的品种很多，形状差别较大，卡盘的夹紧和定位方式各不相同，有外部摆动压板夹紧式和内部钩形压板(压板可转位90°，便于装卸工件)夹紧式，还有卡爪抱紧式等，有固定定位式和活动定位式等。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。