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Waist-shaped deep hole processing method and prepared grouting block

A waist-shaped deep hole processing and grouting block technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as hole cracking, weld cracks, and difficulty in controlling the flatness of two notches, and achieve low cost , easy processing, and the effect of improving welding quality

Active Publication Date: 2017-09-29
CHINA RAILWAY SCI & IND GRP RAIL TRANSPORTATION EQUIP LIMITED +1
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Problems solved by technology

However, the flatness of the two notches is not easy to control during the welding process, and a large pressure is required to promote the flow of the slurry during the slurry delivery process, and the weld will bear a large tensile force, which will cause the weld to appear. cracks, resulting in hole breakouts

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  • Waist-shaped deep hole processing method and prepared grouting block
  • Waist-shaped deep hole processing method and prepared grouting block

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] Such as figure 1 As shown, a kind of waist type deep hole machining method provided by the present embodiment comprises the following steps:

[0024] Step 1: cutting according to the shape of the workpiece to be processed to obtain the first semi-finished product 1;

[0025] Step 2: Decompose the first semi-finished product into several small pieces to obtain the second semi-finished product 2;

[0026] Step 3: Drill two through holes along the length direction of each second semi-finished workpiece to obtain a third semi-finished product 3;

[0027] Step 4: Weld and assemble each third semi-finished product sequentially. During the assembly process, insert each third semi-finished product into two through holes through two central shafts and connect them in series, so as to ensure the coaxiality of each hole, and obtain the first Four semi-finished products 4, so...

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Abstract

The invention discloses a waist type deep hole processing method and prepared grouting blocks. The method comprises the steps of blanking according to the shape of a workpiece to be processed to obtain a first semi-finished product; decomposing the first semi-finished product into small workpiece sections to obtain second semi-finished products; drilling two through holes in each second semi-finished product in the length direction to obtain third semi-finished products; sequentially welding and splicing the third semi-finished products to obtain a fourth semi-finished product; milling notches corresponding to the two deep holes, in the fourth semi-finished products in the length direction to obtain a fifth semi-finished product; machining a strip-shaped plate and forming a groove to obtain a sixth semi-finished product; correspondingly welding and molding the six semi-finished product and the notches in the fifth semi-finished product. With the adoption of the method, various precision deviations in the boring processing process can be avoided; after being decomposed, the deep holes are directly drilled and milled, so that the cost is relatively low; in addition, the requirements on precision, linearity and smoothness of the deep hole walls can be met; the welding, splicing and molding are performed for finishing the processing; therefore, the production efficiency is increased.

Description

technical field [0001] The invention relates to a waist-shaped deep hole processing method and a prepared grouting block. Background technique [0002] Deep holes refer to holes with a ratio of hole depth to hole diameter greater than 6. Deep hole processing, especially the processing of slender holes, is a difficult problem in machining. The difficulty is that the tool is slender, poor in rigidity, easy to break, and strong in processing [0003] If the degree is not enough, the machining accuracy is difficult to guarantee. The patent application titled "Deep hole processing method and prepared grouting block" (publication number: CN 103192230 A) proposes to decompose the hole section of the grouting block from the middle, mill out two notches, and then splice them into shape. However, the flatness of the two notches is not easy to control during the welding process, and a large pressure is required to promote the flow of the slurry during the slurry delivery process, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00E21D11/10
Inventor 徐永刘继平李桐童彪陈彦林李智安杨兵宽周红霞李春波张文凯
Owner CHINA RAILWAY SCI & IND GRP RAIL TRANSPORTATION EQUIP LIMITED
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