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A kind of processing method of nitriding gear

A processing method and gear technology, applied in the processing field of nitriding gears, can solve problems such as component deformation, and achieve the effect of reducing deformation and ensuring processing accuracy

Active Publication Date: 2016-06-29
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem of component deformation in the existing nitriding gear machining process, and provides a nitriding gear machining method

Method used

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  • A kind of processing method of nitriding gear

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Experimental program
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specific Embodiment approach 1

[0022] Specific embodiment one: the processing method of a kind of nitriding gear of this embodiment is to carry out according to the following steps:

[0023] 1. Select a forging made of 42CrMo, and heat the forging at a temperature of 1100-1200°C for a heating time of 40min-80min to obtain the workpiece to be processed;

[0024] 2. Select the CNC machine tool, choose the outer circle turning tool and the inner hole boring tool for the tool, rough the outer circle b and inner hole a of the hub to be processed, the outer circle b of the hub, the inner hole a and the single-sided machining surplus of the two end faces The amount is 3mm, and the workpiece after rough turning is obtained; the cutting parameters are: speed 150r / min, feed rate 0.25mm / r, cutting depth 2mm;

[0025] 3. Put the rough-turned workpiece obtained in step 2 into a medium-temperature furnace, heat it for 60-120 minutes at a temperature of 920-940°C, then put it into an oil tank to cool to normal temperature...

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment is different from Embodiment 1 in that: In step 1, the forging is heated at a temperature of 1150°C. Others are the same as the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the heating time in step 1 is 60 minutes. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a processing method for nitrided gears which mainly solves the problem of deformation of parts in the course of processing a nitrided gear. The method comprises the following steps: I, rough turning the outer circle and the inner hole; II, performing heat treatment until the HBS reaches 260-300; III, finish turning parts; IV, tinning; V, milling the gear; VI, nitriding; VII, grinding the end surface; VIII, grinding the inner hole; IX, slotting and processing the key groove by utilizing a slotting tool; X, the lathing phi 160 (minus 0.05 / minus 0.20) hub outer circle b to be coaxial with the inner hole a by 0.015 mm, and lathing the two end faces to be perpendicular to the inner hole a by 0.015 mm; XI, grinding the gear tooth form; XII, marking a drilling hole, and finishing nitrided gear processing. The processing method for nitrided gears is used for preparing nitrided gears.

Description

technical field [0001] The invention relates to a method for processing nitriding gears. Background technique [0002] Nitriding gear is a transmission part in the spindle box of CNC lathe. In order to ensure its transmission accuracy and service life, the gear part needs to be nitrided to improve the surface hardness of the gear and the wear resistance of the gear part. Existing processing methods are easily deformed during processing. Contents of the invention [0003] The invention aims to solve the problem of component deformation in the existing nitriding gear machining process, and provides a nitriding gear machining method. [0004] A kind of processing method of nitriding gear of the present invention is to carry out according to the following steps: [0005] 1. Select a forging made of 42CrMo, and heat the forging at a temperature of 1100-1200°C for a heating time of 40min-80min to obtain the workpiece to be processed; [0006] 2. Select the CNC machine tool, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 魏成双范立刚吕岩峰齐莹莹孙盛丽陈菲
Owner HARBIN TURBINE
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