Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up.
基于钻孔过程中瓦斯动态涌出的基本特点，建立了钻孔瓦斯动态涌出量的理论计算模型。
Disclosed is a rigid boring cutter for machining a slender hole.
一种加工细长孔的刚性镗刀。
This paper introduced construction technique of the inverted vertical line survey system, boring, hole slope measuring, slope correcting, etc. of the Yantan hydropower station.
介绍岩滩水电站大坝倒垂线观测系统的倒垂线孔钻孔的孔斜控制、孔斜测量、孔斜纠偏等施工技术及廊道内遇长岩芯的处理方法。
The NC boring machine equipped with this kind of deformable bar can bore special-shaped pin hole in piston efficiently, and meanwhile meet the demand of micro-meter accuracy.
装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。
The application situations of controlled blasting techniques in pile hole boring are introduced.
通过实例介绍了控制爆破技术在桩孔开挖工程中的应用情况。
This paper expounds the design of processing techniques before hole-boring on the cylinder of upright post and hoisting jack used in the hydraulic support.
阐述了液压支架所用立柱、千斤顶的缸筒在上深孔钻镗床进行镗孔、滚压之前必须进行的加工工艺的设计。
The boring machine used to process larger diameter hole, to achieve higher machining accuracy.
镗床用来加工直径较大的孔，能达到较高的加工精度。
Product use: machining deep hole gun is applicable to stainless steel, aluminum alloy, steel, cast iron and other materials of drilling, deep hole boring of workpiece.
产品用途：适用于普通碳钢、铸铁等各种材质工件深孔镗的钻孔，镗孔，刮削滚轧加工。
In Sanshan West Bridge arch's defect detection, we calculate the defect's dimension through analysis the wave time and wave shape parameters, and then verify the results by boring a hole.
在三山西大桥拱肋缺陷检测中，通过声时波形参数计算拱肋缺陷的大小，并进行了钻孔验证。
To adopt boring technology to process hole alike ellipse sphere in the harder material and to explore devising method of cutting tool.
采用镗削加工工艺加工硬度较高材料的椭球孔，并探讨刀具设计方法。
Other special nc machining equipment: main products are deep hole drilling, deep hole boring, bull boring milling equipment, horizontal drilling and milling equipment, etc.
其它专用数控加工设备：主要产品有深孔钻、深孔镗、多头镗铣设备、卧式钻铣设备等。
Edged polished glass, glass grooving, hole boring, Irregular shaped glass, etc.
各种磨边、钻孔、刻花、异形玻璃等。
The utility model belongs to the field of metal material cutting tools, especially fitting for boring processing of a small deep hole of brittle rare and precious metal material.
本实用新型属于金属材料的切削刀具领域，特别适合于脆性稀贵金属材料的小深孔套料加工。
The technology for boring-reaming the bolt hole of pin connecting original main shaft with new runner of turbine in site of Danjiangkou hydropower plant and its effect are described.
介绍了丹江口电厂在机组改造增容中新转轮与原大轴连接销钉螺栓孔工地同镗铰所采用的方法及达到的效果。
The NC boring lathe equipped with this kind of deformable arm can bore special shaped pin hole for piston efficiently, and meanwhile meet the demand of micro meter accuracy.
装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。
The present invention solves the field quickly boring big, deep hole problem in industry field, and has good boring controllable performance and high accuracy;
本发 明解决工业现场快速镗削大、深孔难题，镗削可控性能好，精度高；
It is carried out by using some lumps and a set of especial guiding boring-hole device. This method is easy and convenient.
提出了联合使用量块和一套导向镗孔装置的解决方案。
The construction methods of slurry hole-boring cast-in place pile and the common quality diseases treatments are discussed.
泥浆护壁钻孔灌注桩的施工方法与常见质量通病的处理方法。
This paper introduces a technique of erecting framework and rig at the upper part of the caisson, making underwater boring and oriented explosion by layers within the bore hole.
本文介绍了在沉井上部搭台架设钻机，进行水下钻孔，孔内分层定向爆破技术。
Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up.
在全面分析钻井机械的组成、钻进过程的特点和人的特性的基础上，建立钻机钻进过程人机系统可靠性模型。
Research on boring mechanism for piston noncircular pin hole;
简述了采用活塞异形销孔的必要性及其结构特点。
The round punch is passed through a work plate placed on the PET to cause a punched-out piece to remain within the PET, thereby boring the fine hole.
圆形冲孔 器穿过放置在PET上的工作板，以便使冲掉的片留在PET内，由此钻出细 微孔。
The round punch is passed through a work plate placed on the PET to cause a punched-out piece to remain within the PET, thereby boring the fine hole.
圆形冲孔 器穿过放置在PET上的工作板，以便使冲掉的片留在PET内，由此钻出细 微孔。
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