Turbine disk fir-shaped mortise broaching tool

A fir tree-shaped and turbine disk technology is applied in the structural field of broaches, which can solve the problems of difficult machining, large plastic deformation, and high cutting temperature, so as to reduce broaching allowance, reduce elastic deformation, and reduce broaching resistance. and the effect of broaching heat

Inactive Publication Date: 2010-07-14
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The turbine disk rotates at high temperature and high speed. The turbine disk and the blades are connected by a fir tree-shaped surface. In order to avoid cracks caused by stress concentration, the accuracy of the fir tree-shaped tenon and groove of the turbine disk is required to be high. The tolerance is strict, and the material of the turbine disk part is generally a high-temperat

Method used

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  • Turbine disk fir-shaped mortise broaching tool
  • Turbine disk fir-shaped mortise broaching tool
  • Turbine disk fir-shaped mortise broaching tool

Examples

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Effect test

Embodiment 1

[0022] This embodiment provides a turbine disk fir tree-shaped tongue and groove broaching tool, which is characterized in that: the two sides of the blade width of the turbine disk fir tree-shaped tongue and groove broaching tool have sharp corners of 0.2× 45-degree chamfering, that is, there is a feed amount in the direction of the top surface, and there is also a feed amount in the direction of the chamfering. The original single-edged broaching is changed to multi-edged broaching, and the length of the chip edge is increased. This small chamfer Greatly reduces the cutting resistance, makes the broaching go smoothly, reduces the frequency of sharpening and the scrap rate of parts,

[0023] Rough grooving at parts 1 to 6, rough drawing of the tenon and groove tooth profile at the seventh part, fine drawing of the tenon and groove tooth profile at the eighth part, and fine drawing of the top surface of the ninth part;

[0024] 6 slotting knives are used for parts 1 to 6, 1 ro...

Embodiment 2

[0028] This embodiment provides a turbine disk fir tree-shaped tongue and groove broaching tool, which is characterized in that: the two sides of the blade width of the turbine disk fir tree-shaped tongue and groove broaching tool have sharp corners of 0.2× 45-degree chamfering, that is, there is a feed amount in the direction of the top surface, and there is also a feed amount in the direction of the chamfering. The original single-edged broaching is changed to multi-edged broaching, and the length of the chip edge is increased. This small chamfer Greatly reduces the cutting resistance, makes the broaching go smoothly, reduces the frequency of sharpening and the scrap rate of parts,

[0029] Rough grooving at parts 1 to 6, rough drawing of the tenon and groove tooth profile at the seventh part, fine drawing of the tenon and groove tooth profile at the eighth part, and fine drawing of the top surface of the ninth part;

[0030] 6 slotting knives are used for parts 1 to 6, 1 ro...

Embodiment 3

[0034] This embodiment provides a turbine disk fir tree-shaped tongue and groove broaching tool, which is characterized in that: the two sides of the blade width of the turbine disk fir tree-shaped tongue and groove broaching tool have sharp corners of 0.2× 45-degree chamfering, that is, there is a feed amount in the direction of the top surface, and there is also a feed amount in the direction of the chamfering. The original single-edged broaching is changed to multi-edged broaching, and the length of the chip edge is increased. This small chamfer Greatly reduces the cutting resistance, makes broaching go smoothly, reduces the frequency of sharpening and the scrap rate of parts,

[0035] Rough grooving at parts 1 to 6, rough drawing of the tenon and groove tooth profile at the seventh part, fine drawing of the tenon and groove tooth profile at the eighth part, and fine drawing of the top surface of the ninth part;

[0036] 6 slotting knives are used for parts 1 to 6, 1 rough-...

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Abstract

The invention relates to a turbine disk fir-shaped mortise broaching tool, which is characterized in that a milled chamfer angle of 0.2x45 DEG is arranged on a sharp corner at two sides of the bladewidth of the turbine disk fir-shaped mortise broaching tool, parts 1 to 6 are slotted roughly, a seventh part is roughly broached with a mortise thread shape, an eighth part is precisely broached with a mortise thread-form sectional surface, and the top surface of a ninth part is precisely broached; the parts 1 to 6 adopt six slotting cutters, the seventh part adopts one rough-broaching thread-form cutter, the eighth part adopts one precise-broaching thread-form cutter, and the ninth part adopts one top-surface broach which is also named cap knife. The turbine disk fir-shaped mortise broaching tool has the advantages that the design structure of the broach is changed, the service life of the slotting broach is improved, and the manufacturing precision and the product complete qualification rate of the thread-form precise broach are broken through. The debugging period is successfully shortened, the trial broaching at one time is completely qualified, the production efficiency is improved by 30 percent, and the service life of the broach is prolonged. Compared with the combination-type broach and the powder metallurgy broach, the broaching tool with the above structure has simpler manufacturing process, good interchangeability, safe application and low cost.

Description

technical field [0001] The invention relates to the structural field of broaching tools, and in particular provides a turbine disc fir tree-shaped tongue and groove broaching tool. Background technique [0002] The turbine disk rotates at high temperature and high speed. The turbine disk and the blades are connected by a fir tree-shaped surface. In order to avoid cracks caused by stress concentration, the accuracy of the fir tree-shaped tenon and groove of the turbine disk is required to be high. The tolerance is strict, and the material of the turbine disk part is generally a high-temperature alloy. Its cutting characteristics are: when the high-temperature strength of the material is large, the plastic deformation is large, the cutting force is large, the thermal conductivity is poor, the cutting temperature is high, the work hardening is serious, it is easy to stick to the knife, and the tool life is long. Low, difficult mechanical processing and other technical difficult...

Claims

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Application Information

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IPC IPC(8): B23D43/00B23Q3/00
Inventor 徐岩
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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