Boring tool used for machining deep holes of turbine sleeves and deep hole machining method

A technology for processing tools and steam turbines, which is applied in the direction of manufacturing tools, boring/drilling, and metal processing equipment. It can solve the problems of tool chipping, breaking, and poor heat dissipation conditions of tools, so as to prevent damage to workpieces, and is convenient and fast to use. The effect of increasing the service life

Inactive Publication Date: 2014-07-23
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the axis of the hole is easily skewed during deep hole machining in the prior art, and it is easy to be deflected and vibrated during machining, the heat dissipation conditions of the tool are poor, and the increase in cutting temperature will reduce the durability of the tool, making it difficult to cut and eliminate , it will not only scratch the machined surface, but also cause the chipping or breaking of the tool in severe cases, and then propose a boring tool and deep hole processing method for steam turbine sleeve deep hole processing

Method used

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  • Boring tool used for machining deep holes of turbine sleeves and deep hole machining method
  • Boring tool used for machining deep holes of turbine sleeves and deep hole machining method
  • Boring tool used for machining deep holes of turbine sleeves and deep hole machining method

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1-Figure 7 Describe this embodiment, the deep hole boring processing tool for the steam turbine sleeve described in this embodiment, the boring tool includes a boring tool bar 1, a boring tool 2 and four guide blocks 3, the guide blocks 3 are rectangular Block body, one side of the guide block 3 is processed with an arc-shaped surface 3-1, the left end of the boring bar 1 is processed with a long groove 1-1 to the right, and the outer circle of the boring bar 1 is close to the right end of the long groove 1-1 There are two card slots 1-2 in symmetrical processing, the right end of the boring bar 1 is processed to the left with coolant flow holes 1-3, and the left end of the coolant flow holes 1-3 is evenly distributed in the radial direction with multiple coolant ejection holes 1-4, and the angle formed by the center line of each coolant spray hole 1-4 along the length direction and the center line of the boring bar 1 al...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination figure 1 , figure 2 , Figure 4-Figure 7 Describe this embodiment, the deep hole boring machining tool for steam turbine sleeve described in this embodiment, the boring tool 2 is a cuboid, and the cuboid is divided into an upper end face 2-1, a lower end face 2-2, and a left end face 2 -3, the right end face 2-4, the front end face 2-5 and the rear end face 2-6, the upper end face 2-1 near the cuboid is processed with the first cutting tool 2-7, and the lower end face 2-2 near the cuboid is processed with the second Cutter 2-8, between the first cutter 2-7 and the second cutter 2-8 is a handle 2-9, and the cutter head of the first cutter 2-7 and the cutter head of the second cutter 2-8 are all close to the cuboid The angle formed by the main cutting edge of the first tool 2-7 and the upper end surface 2-1 is 45°, and the angle formed by the main cutting edge of the second tool 2-8 and the lower end surface 2-2 is 45°, th...

specific Embodiment approach 3

[0018] Specific implementation mode three: combination Figure 1-Figure 7 Describe this embodiment, a deep hole boring processing tool for steam turbine sleeve described in this embodiment, the cutting edge of the first cutting edge and the cutting edge of the second cutting edge and the arc surface 3 of the four guide blocks 3 -1 On the arc of the same circle, the length of the boring tool 2 is L, the value of L is 35mm, the distance between the tip of the first blade and the tip of the second blade is 20mm-30mm, and other specific Embodiment 1 is the same.

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Abstract

The invention relates to a boring tool used for machining deep holes of turbine sleeves and a deep hole machining method in order to solve the problems that in the deep hole machining process in the prior art, the axes of holes are prone to inclination, guiding deviation and vibration happen easily in the machining process, a tool is poor in heat dissipation conditions, the durability of the tool will be reduced because the cutting temperature rises, cuttings are difficult to discharge, and not only may machined surfaces be scratched, but also the tool may suffer tipping or even break in serious conditions. The boring tool comprises a boring cutter bar, a boring cutter and four guide blocks. A long groove and two clamping grooves are machined in the left end of the boring cutter bar to the right, a cooling liquid circulating hole is machined in the right end of the boring cutter bar to the left, a plurality of cooling liquid spray holes are evenly machined in the left end of the cooling liquid circulating hole in the radial direction, the boring cutter penetrates through the long groove to be clamped in the two clamping grooves in the boring cutter bar, and the four guide blocks are arranged on the boring cutter bar. The boring tool is used for machining deep holes of turbine sleeves.

Description

technical field [0001] The invention relates to a boring tool for deep hole processing of steam turbine sleeves and a deep hole processing method. Background technique [0002] In machining, a hole whose length to diameter ratio is greater than five is called a deep hole. Deep hole processing is more difficult than general hole processing. There are a certain number of long sleeves in the steam turbine adjustment sleeve, which not only have a deep hole but also have high requirements on precision and surface roughness. Due to the long parts, the method of "one clamp and one support" is often used for deep hole processing, but the following problems generally exist: when deep hole processing, the axis of the hole is easy to be skewed. Low, it is easy to cause deviation and vibration during processing, the heat dissipation condition of the tool is poor, the durability of the tool will be reduced when the cutting temperature rises, and it is difficult to remove the cutting ed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B41/02B23B29/02
CPCB23B41/02B23B29/02
Inventor 陈永亮张彦成国富王淑琴赵军
Owner HARBIN TURBINE
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