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First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

The invention is directed to a dry shaving apparatus with an electric drive mechanism provided in a housing (1) and a housing part in which a removable frame equipped with at least one cutter element is held by at least one detent mechanism, wherein upon release of the removable frame by the detent mechanism the removable frame is movably held in a holding position by a retaining device, wherein in said holding position provision is made for at least one distance (W, W1) between a wall of the removable frame and a wall of the housing part, and the removable frame is adapted to be set in motion by the drive mechanism.

本发明涉及一种干式剃须装置具有：一个设在壳(1)中的电驱动机构和一个壳部，其中可拆卸的刀框由至少一个插销机构固定，可拆卸的刀框包含至少一个刃具，其特征在于，在插销机构将可拆卸的刀框释放时可拆卸的刀框由一个固定装置可动地固定在固定位置，在所述的固定位置中，在可拆卸的刀框的一个壁和壳部一个壁之间形成至少一个距离(W1、W2)，并且可拆卸的刀框能通过驱动机构置于运动中。

With differential geometry knowledge, the local characters of the blade surface are analyzed. Based on researching the cylindrical cutters osculating location, the methods to calculate the osculating location of the conic cutter and the torus cutter are discussed. A method of tool path planning based on the second order osculating method is preferred.

利用微分几何学知识，分析了螺旋桨桨叶曲面的局部特征，在研究圆柱刀二阶密切法规划刀位的基础上，探讨了圆锥刀和圆环刀的二阶密切刀位计算方法，采用二阶密切法规划刀位可以显著地提高加工精度。

Company main products: steel, band saw, shovel Paper machine belt knife, a knife with film Paper Machine, EVA Units autopsy knife, sponge machine knives, cutter knives and all kinds of circular knives.

公司主要产品：带钢、带锯、铲皮机刀带、片皮机刀带、EVA剖台刀、海绵机带刀、切纸机带刀及各类环形带刀。

Huayi tools now produce: disposable ultra micron carbide, ceramic, metal-ceramics tools; numerical control handle, arbor, cutter head; PCD, CBN blade; cobalt HSS, ultra micron carbide, metal-ceramic pan, ball-end milling, rake blade, rose-reamer, carving tools, left driller, and deep-hole driller, step driller, reamer, screw, saw blade, Welding tool, and non-standard forming cutter.

华益工具目前生产产品：舍弃式超微粒硬质合金、陶瓷、金属陶瓷刀片；数控刀柄、刀杆、刀盘；PCD、CBN刀片；钴高速钢、超微粒硬质合金、金属陶瓷平底、球头铣刀、斜度刀、倒角刀、雕刻刀、钻头、左钻、深孔钻、台阶钻、铰刀、丝攻、锯片；焊接刀具、及非标成形刀具。

The new shredding mechanism is in installs a cylinder knife under the horizontal-type stripper roller, there is a cut knife at the front of the cylinder knife, after the corn stem enters the gap between stripper roller, is cut off by the knife .When the stripper roller is working, it picking the corn cob, at the same time it take the corn stem into the cylinder knife, the corn stem is cut off by the knife, then the corn stem that has been cut off is thrown out by the cylinder knife.

新装置基于背负式穗茎兼收玉米联合收获机设计，原理是在每对卧式摘穗辊的下方安装一个滚筒刀，在滚筒刀的前端安装有割断刀，当玉米茎杆进入摘穗辊间隙后被割断刀打断，摘穗辊进行摘穗工作的同时将已被打断的玉米茎杆喂入到滚筒刀中切碎，切碎后的茎杆被滚筒刀抛送到茎杆收集装置中。

The excavation surface model of the composition geologic strata for the shield machine was established, in which the soft soil and hard rocks are taken into account simultaneously. In terms of the cutting mechanism of the individual disc cutter and drag scraper, the total bending moment model on the cutterheads of shield machines was proposed. The bending moment behavior was discussed when the shield machine excavates in the composition geologic strata.

针对盾构机在掘进过程中上软下硬的复合地质结构，建立了其刀盘截面圆模型，基于单个切削刀和盘形滚刀的切削机制，建立了复合岩土层掘进时刀盘平面内总弯矩分析模型，分析了与刀盘接触的撑子面内，不同软土面积分数的复合地质条件下，刀盘旋转掘进过程中的弯矩动态特性。

Bulk volume of the volume of block block block caliper micrometer-specific block, such as special types of straight shank drill bits Serratula straight shank long twist drill set, such as alloy straight shank twist drill reamer type of hand reamer straight shank straight shank machine reamer taper shank machine reamer and other types of coarse tooth cutter straight shank cutter tooth taper shank Rough Milling fine-tooth cutter straight shank end mill, such as hand-tap machine tap tap tap left teeth straight pipe tap, such as garden die die die left teeth straight pipe die die US-made of other alloys such as Alloy blade machine Segment saw blade, such as gear type inverted roller gear Gear planing cutter knife disc-shaped gear gear shaper cutters, such as factory outlets: cast iron flat, square boxes, granite slab, square and so on.

量块 散量块卡尺专用块千分尺专用块等钻头类直柄麻花钻直柄长麻花钻镶合金直柄麻花钻等铰刀类直柄手铰刀直柄机用铰刀锥柄机用铰刀等铣刀类粗齿直柄立铣刀粗齿锥柄立铣刀细齿直柄立铣刀等丝锥手用丝锥机用丝锥左牙丝锥直管丝锥等板牙园板牙左牙板牙直管板牙美制板牙等其他合金刀头合金刀片机用锯条等齿轮倒类齿轮滚刀齿轮刨刀齿轮铣刀盘形插齿刀等厂家直销：铸铁平板、方箱、花岗石平板、直角尺等。

A section of blade in knife can swing, this is to come into contact with the blade rollers without arose as a result interolcking scraping unevenness, so at the last fixed blade that from both sides will squeeze blade only 34, ink tools without leaving gaps in the front end of the blade and rollers contacted fall into line.

不朱刀在不朱刀支架上是可以把握摆动的，这是为了不朱刀在隔绝不朱辊时不会因爆发不正位而变成刮不朱不匀，因此在末了变动不朱刀时一定要从双方不兵34只不朱刀挤不松，不朱刀间不不去间隙，使不朱刀前端在与不朱辊隔绝处排成曲线。

Seiko the Company to create a variety of flooring knives, knives door, wood-line knife, slot cutter, flat knife, finger jointing knives, carbide saw blade knife and speakers and so on, at the same time produce the application of plate and solid wood furniture and furniture production other tool.

本公司精工制造各种地板刀、门刀、木线刀、槽刀、平口刀、指接刀、音箱刀及硬质合金锯片等，同时可生产适用与实木家具和板式家具生产的其他刀具。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。