一种正压式叶片榫齿磨工具
By designing a positive pressure blade tenon grinding tool, the problems of clamping deviation and insufficient strength in turbine blade tenon machining were solved, achieving efficient and stable machining results and improving machining pass rate and dimensional stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JIANGJIN SHIPBUILDING IND
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the machining of turbine blade tenons for marine turbochargers has problems such as large clamping deviation, poor repeat clamping accuracy, low machining pass rate, unstable dimensions and insufficient tooling strength, resulting in high machining difficulty, low pass rate and large dimensional fluctuations.
The positive pressure blade tenon grinding tool adopts a combination design of positioning blocks, positioning cover plates, front convex plates, rear convex plates, positioning pins, front clamping blocks and rear clamping blocks to achieve stable clamping and efficient machining of turbine blades. The tool body is made of high-strength materials and its overall strength is improved through heat treatment.
It improves the machining stability and pass rate of turbine blade tenons, controls the clamping error within 0.02mm, improves the machining dimensional stability to 0.005mm-0.01mm, significantly enhances tooling strength, and achieves a pass rate of over 96%.
Smart Images
Figure CN224509336U_ABST
Abstract
Claims
1. A positive pressure blade tenoning tool characterized by: The tool body includes a positioning block and a positioning cover plate. The positioning block has a front convex plate and a rear convex plate fixed on it to support the turbine blades. A positioning pin is fixed on the front convex plate along a direction perpendicular to it, with the head of the pin corresponding to the back of the blade tenon. The positioning pin is used to longitudinally limit the turbine blade. The positioning cover plate has two vertical grooves along its upper edge, and a front clamping block and a rear clamping block are correspondingly fitted into these grooves. Both the front and rear clamping blocks are threaded with hexagonal socket head cap screws. Each of the components forms a screw and nut mechanism with a corresponding hexagon socket screw. The hexagon socket screw is used to drive the front clamping block and the rear clamping block to rise and fall. The space between the front clamping block, the rear clamping block and the front and rear convex plates is the clamping space for the turbine blades. An upper cover plate is fixed on the positioning cover plate, and a sealing plate is fixed on the upper cover plate. The hexagon socket screw passes downward through the upper cover plate. The upper cover plate is used to limit the lower limit position of the hexagon socket screw nut, and the sealing plate is used to limit the upper limit position of the hexagon socket screw. The sealing plate has an opening to allow space for the tool to tighten the hexagon socket screw.
2. A positive pressure blade and gullet tool as described in claim 1, wherein: The upper surfaces of the front and rear convex plates are curved surfaces corresponding to the inner arc of the turbine blade, and the lower surfaces of the front and rear clamping blocks are curved surfaces corresponding to the back arc of the turbine blade.
3. A positive pressure blade and gullet tool as described in claim 1, wherein: The front clamping block corresponds to the front convex plate, and the rear clamping block corresponds to the rear convex plate.