spiral cutting

Study On Blasting Mechanism and its Engineering Use of Spiral Cutting with Big Empty Hole in Rock Under-Excavation

岩石工程大空孔螺旋掏槽爆破机理研究及应用

Optimization design of parameters of shearer spiral cutting drum based on immune GA algorithm;

提出了适用于淤煤转载机螺旋滚筒的静、动密封结合的密封设计方案。

At the same time restriction conditions, such as breaking model of coal wall, rotation speed of the spiral cutting drum, rise angle of the helical blade, and so on, and subjection functions were selected.

通过选取煤壁破碎模式、滚筒工作转速、叶片螺旋升角等作为约束条件，讨论了其隶属函数。

Application of Fuzzy Theory in Optimum Design for Structural Parameters of Spiral Cutting Drum of Shearer

模糊理论在采煤机螺旋滚筒结构参数优化设计中的应用

The Research on NC Grinding Rake& Flank Faces of Ball-end Cutters with Spiral Shape Major Cutting Edge

数控磨削螺旋刃球头立铣刀前后刀面的研究不重磨硬质合金面铣刀

This is a study of mathematical model and principle of applied spiral Cutting non-circular on the machina of procedure-Control hobbing gear

应用渐开线滚刀在数控滚齿机上展成加工非园齿轮原理和数学模型的研究

Residual stress test of spiral spring using the cutting method

切割法测取螺旋弹簧的残余应力

Study on the Design Mechanism of Spiral Paper-cutting Hobs

螺旋式切纸滚刀设计机理研究

On spiral cutting edge with equal screw pitch with the toroidal revolving Machining approach of conical milling cutter with equal helix angle

带角圆的回转铣刀上的等导程螺旋刃口研究等螺旋角锥铣刀的加工法

Model and Simulation for Numerical Control Machining of Heavy Duty Spiral Bevel Gear Cutting Machine

重型弧齿锥齿轮铣齿机数控加工模型建立与仿真

These rolls are corrugated cylinders, usually of the spiral type. Cutting and Precision Form of Helical Vane of Shearer Drum

粉碎辊是波纹式滚筒，还常是螺旋割纹式。采煤机滚筒螺旋叶片的下料及辗压成形

4-bore spiral cutting blasting FEM model is built up by LS DYNA software and the process of spiral cutting blasting with different bore depth and different charging coefficients are simulated and analyzed.

采用LS-DYNA商用有限元程序建立了4孔掏槽爆破的有限元模型，模拟分析了不同孔深条件下不同装药系数时的爆破掏槽过程。

The application of spiral cutting in the digging of tunnels of Yinan Gold Mine

螺旋掏槽在沂南金矿巷道掘进中的应用

The simulation results show that spiral cutting bore is the main influence factor of the effect of deep bore blasting and the results provide academic bases for the optimization design of spiral cutting bore.

计算结果表明掏槽孔是影响中深孔爆破效果的重要因素，并为优化掏槽孔设计方案提供了理论依据。

Using the fuzzy theory, the optimum design for structural parameters of spiral cutting drum of shearer was discussed.

运用模糊理论对采煤机螺旋滚筒结构参数进行了优化设计。

The formulation of movement function and product platform and generalized structure model are founded for CNC spiral bevel gear cutting machine.

建立了数控弧齿铣齿机运动功能解析式、产品平台和广义结构模型。

PRO/ E in Spiral Groove of Non-Standard Cutting Tool Design Applications

PRO/E在非标螺旋槽刀具设计中的应用

Fractal theory is used to study the granularity distribution law of the broken cobalt-rich crust collected by spiral cutting. The result shows that its granularity distribution has a very good fractal structure and can be quantitively described with fractal dimension.

应用分形理论研究螺旋切削采集法截割富钴结壳粒度分布规律，结果表明，其粒度分布具有很好的分形结构，可以用分形维数定量描述。

By adopting spiral cutting instead of traditional barrel shaped cutting in the course of digging tunnels in the solid marble strata of Yinan Gold Mine, the blasting efficiency and result were improved besides the consumption of materials was lowered.

沂南金矿在较坚硬的大理岩层中掘进巷道时，采用螺旋掏槽替代传统的桶形掏槽，可改善爆破效果，提高爆破效率，降低材料单耗。

Processing Spiral Groove Cutting Tool Adjustment Parameter Iteration Algorithm

加工螺旋槽用盘形铣刀调整参数的迭代算法

The spiral cutting drums which have some functions such as cutting coal and loading coal serve as a main type of operating mechanism of shearer.

螺旋滚筒是滚筒采煤机的工作机构，它兼有截煤和装煤的功能。

The application of fuzzy theory in optimum design for struc-tural parameters of spiral cutting drum of shearer sufficiently considers the fuzzy characters of various factors that affect specific energy.

将模糊理论应用于采煤机螺旋滚筒结构参数的优化设计，能充分考虑影响截割比能耗的各种因素的模糊性。

Objective To evaluate multi-slices spiral CT-guided percutaneous cutting needle biopsy in pulmonary nodules less than 3 cm in diameter.

目的评价多排螺旋CT引导下经皮肺切割针活检直径≤3cm肺结节的价值。

Analysis of characteristics of load on a spiral drum in cutting

螺旋滚筒切削载荷特性的分析

In view of the time varying property of a spiral bevel gear mill cutting system, a piecewise linear and time invariant modelling approach based on time series analysis is proposed in this paper.

为了提高弧齿锥齿轮加工精度和切齿效率，提出弧齿锥齿轮铣齿机切削系统的时序分时建模系统辨识方法。

The spiral cutting grinder has the beneficial effects that the motor has small operational energy consumption and the cut material has uniform granularity.

其效果是电机的工作能耗小，切割后产生的物料粒度均匀。

The use of the spiral groove of non-standard cutting tool by PRO/ E 3D software designed to simplify the basic principles and methods is presented, and processing done to the actual certification.

介绍了非标螺旋槽刀具采用PRO/E软件进行三维简化设计的基本原理及方法，并用实际加工进行验证。

The paper introduces simulated annealing algorithm about its theory, model and realization process, by which model for performance and parameters of shearer spiral cutting drum is made optimally designed and calculated. The result shows that efficiency can be increased by 12.9972% than old design.

介绍了模拟退火算法的原理、模型和实现过程，采用该算法对采煤机螺旋滚筒装煤性能参数优化模型进行了优化设计计算，表明比原设计提高12.9972%，符合实际应用情况。

Optimization Design to Performance and Parameters of Spiral Cutting Drum Based on Simulated Annealing Algorithm

基于模拟退火算法的螺旋滚筒装煤性能参数优化设计