1.
The optimization design and experimental research on percussion-compact step drill bit
阶梯式冲击挤密钻头结构优化设计及试验
2.
PDC Variable Diameter Drilling Bit Mechanical Characteristics and Structural Design;
PDC变径钻头力学特性及结构设计
3.
The development and application of a new type rock bit with bearing liner structure;
镶套轴承结构牙轮钻头的开发与应用
4.
Finite element analysis of the screw structure of the drill-stem junction
钻杆接头螺纹结构形式的有限元分析
5.
ZZM-A drill grinder simple structure, easy operation. One setup to complete grindings on drill web and chisel edge.
a型钻头磨刀机结构简单，使用方便，一次装夹就可以完成钻头的钻尖和横刃的修磨。
6.
Strength Analysis of Screw Sufface and Structure Parameters Study of Auger of Mounted Hole Digger
挖坑机钻头螺旋面强度分析及结构参数探讨
7.
Study on Optimized Design of Hydraulic Structure for PDC Bits Based on CFX
基于CFX的PDC钻头水力结构优化方法研究
8.
According to the drillpipe structural characteristics, a dolly appropriate for drillpipe and Kelly detection is designed, of which its probe is adjustable.
根据钻杆的结构特点,设计了探头距离可调的适用于圆钻杆和方钻杆的探测小车。
9.
A new type rock bit with bearing liner structure has been developed and tested on the spot.
研制了一种新型的镶套轴承结构牙轮钻头,并进行了现场试验。
10.
Development of the Micro-Drill CAD & Simulative System and Optimization for the Structures Based on the Finite Element Analysis;
微钻头CAD与仿真系统的开发及基于有限元的结构优化设计
11.
Study on Multi-spindle Horizontal Drilling Machine Based on Pro/ENGINEER Analysis;
基于Pro/ENGINEE结构分析的多轴头卧式钻床的研究设计
12.
Structural dynamic analysis on ultrasonic driller and drilling experiments
超声钻结构动力分析与钻削实验研究
13.
unit-type drill head
组合钻床钻头, 标准钻头
14.
A selfmade apparatus called" fish scalelike grinding head" is employed to solve the problem, and its operation and structure are introduced.
介绍该厂用自制鱼鳞磨头解决轴孔在钻床上扩孔120μ的具体操作方法及鱼鳞磨头的结构。
15.
The mast assem-bly supports the rotary drill head and its hoisting mechanism.
支架组件支持转动钻头及其提升机构。
16.
Structural Design and Mechanism Study on Water-saving Rotary Percussive Devices;
节水型回转冲击钻具结构设计与钻进机理研究
17.
Study on Structure Optimization of the Derrick of JYD-1000 All-hydraulic Core Drilling Rig;
JYD-1000型全液压岩芯钻机钻塔结构优化研究
18.
New technology and essentials in die design for upsetting drill key on a universal press was introduced. Then a practical die construction was presented.
介绍了在通用冲床上镦锻钻头钥匙的新工艺和模具设计要点 ,并给出了实用的模具结构