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Method and equipment of machining reducing deep hole with small mouth and large middle part

A processing device and processing method technology, applied in metal processing equipment, manufacturing tools, boring/drilling and other directions, can solve the problems of difficult processing, long processing cycle, high cost, and achieve simple and easy methods, high processing efficiency, simple structure

Inactive Publication Date: 2002-05-22
西安石油勘探仪器有限公司
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  • Application Information

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Problems solved by technology

However, the existing processing technology and devices can only solve the problem of shallow hole processing, deep holes with uniform radial basic dimensions, and step-shaped deep holes with corresponding radial dimensions from shallow to deep.
"Hole Machining Technology" by Wang Shiqing, (Petroleum Industry Press, October 1993, Beijing), American Holden J. Swinhart, "Deep Hole Machining" translated by Guan Guangjin, (National Defense Industry Press , 1974, Beijing) and other works have discussed the above-mentioned technologies in detail, but none of them mentioned how to solve the technical problem of variable-diameter deep hole processing with a small entrance and a large middle.
However, it is difficult to effectively increase the radial dimension of the variable-diameter deep hole by using unconventional processing methods such as honing and electrolysis. For example, even if the honing method is used to achieve a small amount of variable diameter such as 0.3 mm, the processing is very difficult. Difficult, and the processing cycle is long, low efficiency, high cost; and if the electrolysis method is used, the process is very complicated, and the accuracy is difficult to guarantee

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  • Method and equipment of machining reducing deep hole with small mouth and large middle part
  • Method and equipment of machining reducing deep hole with small mouth and large middle part

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Embodiment Construction

[0020] Refer to figure 1 , The boring device specially designed to implement the processing method of the variable diameter deep hole with a small entrance and a large middle diameter is composed of a boring head body 9, a cutter head adjustment mechanism, a guide centralizing bar 15, a compression spring 16, a countersunk screw 17, etc. The overall shape is cylindrical. The cutter head adjusting mechanism is located on the upper part of the boring head body 9, and it is mainly composed of the set screw 1, the pressure sleeve 2, the connecting screw 3, the pressure spring 4, the tightening nut 5, the pressure plate 6, the cutter head 7, the adjusting ring 8, and the adjusting cone. 10. The sheath 11, the sealing ring 13 and the like are constituted. At a certain distance from the top of the boring head body 9, a rectangular installation groove is machined downward along the axis. In the installation groove, an adjusting cone 10, an adjusting ring 8, a cutter head 7, a pressing pla...

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Abstract

The invention relates to a method for machining reducing deep hole with small inlet and large middle and its equipment. It is characterized by that mounting the boring-turning device with cutter headregulating mechanism on the boring rod, feeding it into deepest place of the through deep hole machined by using existent technique, using a special device and making it pass the regulating hole communicated with the trough deep hole and being on same axis, and feeding it into the cutter head regulating mechanism outside the workpiece, and can make in-hole cutter regulating, and utilizing regulating ring to change the axial displacement or regulating cone into radial displacement of cutter head to attain the goal of changing outside diameter size of cutter edge. It can machine the reducing deep hole whose reducing ratio is greater than 1 and less than or equal to 1.2 and ratio value of depth and bore diameter is greater than or equal to 50.

Description

Technical field [0001] The invention relates to the field of deep hole processing, in particular to a method for machining a variable diameter deep hole with a small entrance and a large middle for machining, and a boring device designed for realizing the method. Background technique [0002] As we all know, in the machining industry, drilling, turning, milling, boring, and grinding methods are commonly used to process assembly holes with different diameters and different depths on the workpiece. However, the existing processing technology and device can only solve the problem of shallow hole processing, deep holes with the same radial basic size, and stepped deep holes with correspondingly large to small radial sizes from shallow to deep. "Hole Machining Technology" by Wang Shiqing (Petroleum Industry Press, October 1993, Beijing), Holden J. Swinhardt, USA, "Deep Hole Machining" translated by Guan Guangjin, (National Defense Industry Press , 1974, Beijing) and other works descri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B29/034B23B41/00
Inventor 苟明钦李晓
Owner 西安石油勘探仪器有限公司
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