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Blade polishing device for numerical control planer type milling machine

A technology for gantry milling machines and blades, which is applied to devices for fixing grinding wheels, grinding machines, and parts of grinding machine tools. It can solve problems such as high dust and noise, difficult grinding processing, and uncertain differences in computer models, so as to reduce grinding operations, The effect of safeguarding occupational health

Pending Publication Date: 2020-03-17
SICHUAN COLLEGE OF ARCHITECTURAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the blade is a casting with curved surface and variable cross-section, plus the deformation of the cast blade after cooling and the local convexity and depression caused by the shedding of the sand mold, there are uncertain and irregular differences between the blade blank and the computer model of the blade. Therefore, Whether it is grinding with ordinary machine tools or using computer models for NC programming, it is very difficult to perform grinding on NC machine tools
Therefore, factories usually use manual grinding, but the working environment of the grinding workers is very harsh, with a lot of dust and noise, which is very harmful to the health of the grinding workers

Method used

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  • Blade polishing device for numerical control planer type milling machine
  • Blade polishing device for numerical control planer type milling machine
  • Blade polishing device for numerical control planer type milling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment specifically relates to a blade grinding device for a CNC gantry milling machine, which includes a sliding assembly and a rotating assembly, and the rotating assembly runs through the sliding assembly.

[0038] The sliding assembly includes a machine base 2 installed on the spindle box 1 of the machine tool. An outer sliding sleeve 3 is fixedly connected to the lower end of the machine base 2. The inner sleeve of the outer sliding sleeve 3 is provided with an inner sliding sleeve 4. The inner sliding sleeve 4 can move along the outer sliding sleeve. 3 for axial sliding; the outer sliding sleeve 3 is provided with a flange, the lower end of the inner sliding sleeve 4 is fixedly connected with an end cover 21, and the end cover 21 is fixedly connected with six guide rods, the guide rods pass through the flange, and the guide rods The free end is provided with a loose nut. Wherein three guide rods are long guide rods 8, and all the other three are short gui...

Embodiment 2

[0044] The difference between this embodiment and embodiment 1 is:

[0045] The protrusion on the handle shaft 12 of the sliding joint and the depression on the grinding shaft 5, the lower end of the handle shaft 12 is prismatic, the upper end of the grinding shaft 5 is provided with grooves, and the protrusion is the convex part on the handle shaft 12. Rib, depression is the groove on the grinding shaft 5, and the lower end of the handle shaft 12 cooperates with the groove clearance. It should be noted that in this application, "groove" refers to grooves with irregular cross-sections and edges, such as triangular prisms, cross-section columns, etc., even if the cross-section is composed of arcs and straight lines inside. Its principle is similar to the cooperation between the key and the lock cylinder. The key can be inserted or pulled out from the lock cylinder, but the key cannot rotate relative to the lock cylinder.

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PUM

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Abstract

The invention discloses a blade polishing device for a numerical control planer type milling machine. The blade polishing device for the numerical control planer type milling machine comprises a sliding assembly and a rotating assembly, and the rotating assembly penetrates through the sliding assembly. The sliding assembly comprises an engine seat mounted on a machine tool spindle box, an outer sliding sleeve is fixedly connected to the lower end of the engine seat, the outer sliding sleeve sleeves an inner sliding sleeve, and the inner sliding sleeve can slide in the axial direction in the outer sliding sleeve. The rotating assembly comprises a tool holder shaft fixedly connected with a machine tool spindle, a polishing shaft is slidably connected to the lower end of the tool holder shaft, and the polishing shaft is fixed to the inner sliding sleeve by a bearing, is coaxially connected with the tool holder shaft through a sliding and connecting part, and rotates with the tool holder shaft following with the machine tool spindle. According to the blade polishing device for the numerical control planer type milling machine, by adopting a self-adaptive device, grinding wheels can automatically adapt to the transformation of a blade curved surface during grinding, grinding pressure can be adjusted, and the effect of mechanical polishing can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of water turbine blade grinding, in particular to a device for grinding large blades on a numerically controlled gantry milling machine. Background technique [0002] There are many forms of power generation, such as hydropower, thermal power, wind power, and nuclear power, etc. Hydropower stations are mainly built in the middle and upper reaches of rivers, relying on the construction of dams to make the water level drop between the upstream and downstream, and the water flow hits the rotating blades to turn the turbine And generate electricity. In a hydroelectric unit, a water turbine is a hydraulic machine that converts the energy of water flow into rotational mechanical energy. The turbine runner is generally composed of main parts such as upper crown, blade and lower ring. In cast-welded runners, the blades are mostly cast martensitic stainless steel, and the upper crown and lower ring are mostly low-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B41/04B24B19/14B24B41/00B24B45/00
CPCB24B19/14B24B41/007B24B41/04B24B45/003
Inventor 张玉俊鲁士军
Owner SICHUAN COLLEGE OF ARCHITECTURAL TECH