Process of grinding nozzle for impacting generator set

An impact and grinding technology, applied in the direction of machine tools suitable for grinding workpiece edges, can solve the problems of poor roughness and large deviation of coaxiality of processing technology, and achieve small roughness and small deviation of coaxiality. Effect

Inactive Publication Date: 2007-01-03
SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a needle grinding process of the impact type unit, which solves the problems of large coaxiality deviation and poor roughness in the original processing technology.

Method used

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  • Process of grinding nozzle for impacting generator set

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: as figure 1 , the needle grinding process of the impact type unit, the product parts are based on the Φ85H8 of the needle head 1, a new mandrel 2 is used, positioned with Φ85H8, connected with M80×4 thread 3, and the center holes at both ends are used as the grinding positioning reference , the process flow is:

[0018] (1) Grind the outer circle of the mandrel Φ85 and the inner hole of the spray needle Φ85H8, take a gap of 0.02mm, wipe the inner hole and the outer circle of the mandrel with gasoline, and evenly coat a layer of butter on the outer circle of the mandrel and the thread , tighten.

[0019] (2) Grind the 60° conical surface of the inner hole of the spray needle Φ30H8 and the center hole of the mandrel with a 60° oilstone tip, and add kerosene to lubricate the surface roughness of the two center holes to Ra0.2μm, and the two center holes are on the same axis The upper and circular runouts are controlled at 0.2 μm. By grinding the center hole...

Embodiment 2

[0028] Embodiment 2: as figure 1 , the needle grinding process of the impact type unit, the product parts are based on the Φ85H8 of the needle head 1, a new mandrel 2 is used, positioned with Φ85H8, connected with M80×4 thread 3, and the center holes at both ends are used as the grinding positioning reference , the process flow is:

[0029] (1) Grind the outer circle of the mandrel Φ85 and the inner hole of the spray needle Φ85H8, take a gap of 0.03mm, wipe the inner hole and the outer circle of the mandrel with gasoline, and evenly coat a layer of butter on the outer circle of the mandrel and the thread , tighten.

[0030] (2) Grind the 60° conical surface at the inner hole of the spray needle Φ30H8 and the center hole of the mandrel with a 60° oilstone tip, and add kerosene to lubricate, so that the surface roughness of the two center holes reaches Ra0.1μm, and the two center holes are on the same axis The upper and circular runouts are controlled at 0.4 μm. By grinding t...

Embodiment 3

[0039] Embodiment 3: as figure 1 , the needle grinding process of the impact type unit, the product parts are based on the Φ85H8 of the needle head 1, a new mandrel 2 is used, positioned with Φ85H8, connected with M80×4 thread 3, and the center holes at both ends are used as the grinding positioning reference , the process flow is:

[0040] (1) Grind the outer circle of the mandrel Φ85 and the inner hole of the spray needle Φ85H8, take a gap of 0.02mm, wipe the inner hole and the outer circle of the mandrel with gasoline, and evenly coat a layer of butter on the outer circle of the mandrel and the thread , tighten.

[0041] (2) Grind the 60° conical surface at the inner hole of the spray needle Φ30H8 and the center hole of the mandrel with a 60° oilstone tip, and add kerosene to lubricate, so that the surface roughness of the two center holes reaches Ra0.1μm, and the two center holes are on the same axis The upper and circular runouts are controlled at 0.2 μm. By grinding t...

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Abstract

The process of grinding nozzle needle for impacting generator set includes matched grinding the external circle of the spindle and the nozzle needle, grinding the 60 deg conic surface of inner hole and central hole of the spindle with oil stone finial, grinding the external circle, precisely trimming grinding wheel and other steps. The present invention has the advantages of simple technological process, convenient operation, less error in the axiality of the nozzle needle and low roughness of the nozzle needle.

Description

technical field [0001] The invention relates to a processing technology of mechanical parts, in particular to a grinding technology of an impact type jet needle. Background technique [0002] The injection needle is the main part of the injection mechanism in the water guide mechanism of the impact type unit. The movement of the injection needle can gradually change the annular cross-sectional area between the nozzle outlet and the injection needle head, so that the flow rate and flow rate of the nozzle can be changed smoothly. Turbine flow and power. In order to better accomplish these functions, it is required that the axis of the injection needle of the injection mechanism coincides with the axis of the injection mechanism, so that when the injection needle is at any position, the water flow velocity changes smoothly along the streamline direction and reaches the maximum value at the outlet. Therefore, the finishing quality of the injection needle has become an important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B19/16
Inventor 罗耀明赵勇
Owner SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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