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Impact type machine set spray needle grinding process

An impact grinding technology, applied in the direction of the machine tool suitable for grinding the edge of the workpiece, can solve the problems of poor roughness and large deviation of the coaxiality of the processing technology, etc. Effect

Inactive Publication Date: 2009-05-20
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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  • Impact type machine set spray needle grinding process

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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, and a new mandrel 2 is used, positioned with Φ85H8, connected with the M80x4 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 0.02 mm, wipe the inner hole of the needle and the outer circle of the mandrel with gasoline, and evenly coat the outer circle of the mandrel and the thread Layer of butter, screw tight.

[0019] (2) Grind the 60° cone 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 inner hole of the spray needle and the center hole of the mandrel reaches Ra0.2μm, and the spray needle The inner hole and the center ...

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, and a new mandrel 2 is used, positioned with Φ85H8, connected with the M80x4 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 0.03 mm, wipe the inner hole of the spray needle and the outer circle of the mandrel with gasoline, and evenly coat the outer circle of the mandrel and the thread Layer of butter, screw tight.

[0030] (2) Grind the 60° cone 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 inner hole of the spray needle and the center hole of the mandrel reaches Ra0.1μm, and the spray needle The inner hole and the c...

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, and a new mandrel 2 is used, positioned with Φ85H8, connected with the M80x4 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 0.02 mm, wipe the inner hole of the needle and the outer circle of the mandrel with gasoline, and evenly coat the outer circle of the mandrel and the thread Layer of butter, screw tight.

[0041] (2) Grind the 60° cone 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 inner hole of the spray needle and the center hole of the mandrel reaches Ra0.1μm, and the spray needle The inner hole and the center ...

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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 Patents(China)
IPC IPC(8): B24B19/16
Inventor 罗耀明赵勇
Owner SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD