CN114029514A - 齿轮内孔鼓形优化方法 - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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Abstract
本发明公开了一种齿轮内孔鼓形优化方法,预先准备若干个直内孔齿轮,然后进行热处理渗碳淬火试验,当齿轮内孔收缩变形后,通过三坐标进行检测内孔尺寸,检测出齿轮内孔直径尺寸最小点与内孔长度方向的中间点的差值,以及该部位的直径与内孔直径最大的差值(鼓形量),根据以上数据,加工成所需要的鼓形,使热处理后的齿轮内孔的鼓形量满足要求,并使鼓形高点位置正好位于内孔长度方向的中间;本发明将齿轮的热前内孔车成所需要的鼓形孔,在热处理之后,车削的孔就抵消了热处理造成的直径偏差,使孔整体直径偏差减小,提高齿轮的质量和成品率。
Description
技术领域
本发明涉及齿轮内孔加工方法,尤其是用于齿轮制造时的齿轮内孔鼓形优化方法。
背景技术
齿轮在压制后需要进行热处理,由于在热处理的过程中,齿轮的内孔会发生形变,孔两端口会变大,导致孔两端与内中央的直径偏差较大,影响了齿轮的质量和成品率。
发明内容
本发明涉及齿轮内孔鼓形优化方法,能够修正因为热处理导致齿轮孔直径的偏差。
为实现这一目的,本发明所采用的方法是:一种齿轮内孔鼓形优化方法,所述方法步骤如下:
(1)准备若干个直内孔齿轮;
(2)进行热处理渗碳淬火试验,齿轮内孔收缩变形;
(3)用三坐标检测仪检测齿轮的内孔尺寸,检测出齿轮内孔直径尺寸最小点与内孔长度方向的中间点的差值,以及直径最小点与内孔直径最大点的差值(鼓形量),
(4)取多个齿轮的平均值确定内孔直径最小点与中间点的差值和内孔鼓形量大小;
(5)根据以上数据,在热处理前就对齿轮的内孔形状进行优化,加工成所需要的鼓形;
(6)将齿轮进行热处理。
其有益效果是:本发明将齿轮的热前内孔车成所需要的鼓形孔,在热处理之后,车削的孔就抵消了热处理造成的直径偏差,使孔整体直径偏差减小,提高齿轮的质量和成品率。
附图说明
本发明将通过例子并参照附图的方式说明,其中:
图1是本发明的检测点示意图;
图2是抵消鼓形加工后的示意图。
具体实施方式
本说明书中公开的所有特征,或公开的所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以以任何方式组合。
本说明书(包括任何附加权利要求、摘要和附图)中公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的替代特征加以替换。即,除非特别叙述,每个特征只是一系列等效或类似特征中的一个例子而已。
如图1所示的一种齿轮内孔鼓形优化方法,所述方法步骤如下:
(1)准备若干个直内孔齿轮;
(2)进行热处理渗碳淬火试验,齿轮内孔收缩变形;
(3)用三坐标检测仪检测齿轮的内孔尺寸,检测出齿轮内孔直径尺寸最小点与内孔长度方向的中间点的差值,以及直径最小点与内孔直径最大点的差值(鼓形量),
(4)取多个齿轮的平均值确定内孔直径最小点与中间点的差值和内孔鼓形量大小;
(5)根据以上数据,在热处理前就对齿轮的内孔形状进行优化,加工成所需要的鼓形;
(6)将齿轮进行热处理。
具体实施方式,如图1和图2所示,事先做样测量时,预先准备若干个直内孔齿轮,然后进行热处理渗碳淬火试验,当齿轮内孔收缩变形后,通过三坐标进行检测内孔多点尺寸,检测出齿轮内孔直径尺寸最小点d小与内孔长度方向的中间点d中的差值Δd1(Δd1=d中-d小),以及直径最小点d小与内孔直径最大点d大的差值Δd2(鼓形量)(Δd2=d大-d小),取多个齿轮的平均值确定内孔直径最小点与中间点的差值Δd1和内孔鼓形量Δd2大小。在多个齿轮直径变化的数据中,找出直径最小点d小和直径最大点d大发生的位置,根据多组数据的Δd1、Δd2、最小直径产生的纵向位置L1、最大直径产生的纵向位置L2确定最大点d大和最小点d小的位置,根据以上数据,在热处理前就对齿轮的内孔形状进行优化,大批量生产时,加工成所需要的鼓形,故意将最大点d大做小和最小点d小做大,先根据Δd1和L1加工出d小直径,然后根据d小补偿直径加工出d大补偿直径,在热处理变形后抵消变形量,使热处理后的齿轮内孔的鼓形量满足要求,并使鼓形高点位置正好位于内孔长度方向的中间。
本发明将齿轮的热前内孔车成所需要的鼓形孔,在热处理之后,车削的孔就抵消了热处理造成的直径偏差,使孔整体直径偏差减小,提高齿轮的质量和成品率。
本发明并不局限于前述的具体实施方式。本发明扩展到任何在本说明书中披露的新特征或任何新的组合,以及披露的任一新的方法或过程的步骤或任何新的组合。
Claims (1)
1.一种齿轮内孔鼓形优化方法,其特征在于,所述方法步骤如下:
(1)准备若干个直内孔齿轮;
(2)进行热处理渗碳淬火试验,齿轮内孔收缩变形;
(3)用三坐标检测仪检测齿轮的内孔尺寸,检测出齿轮内孔直径尺寸最小点与内孔长度方向的中间点的差值,以及直径最小点与内孔直径最大点的差值(鼓形量),
(4)取多个齿轮的平均值确定内孔直径最小点与中间点的差值和内孔鼓形量大小;
(5)根据以上数据,在热处理前就对齿轮的内孔形状进行优化,加工成所需要的鼓形;
(6)将齿轮进行热处理。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1130514A (ja) * | 1997-07-11 | 1999-02-02 | Polyplastics Co | 樹脂成形歯車の精度算出方法、これを用いた歯車金型製造方法及び樹脂成形歯車 |
US20010020420A1 (en) * | 2000-01-05 | 2001-09-13 | Heinz-Michael Zaoralek | Roll assembly and roll |
KR20020058733A (ko) * | 2000-12-30 | 2002-07-12 | 이계안 | 구멍용 모따기 가공 방법 |
JP2006009118A (ja) * | 2004-06-29 | 2006-01-12 | Sumitomo Denko Shoketsu Gokin Kk | 鉄系焼結機械部品の製造方法 |
CN110904306A (zh) * | 2020-01-02 | 2020-03-24 | 重庆齿轮箱有限责任公司 | 一种零件缩孔方法和一种零件缩孔工装 |
CN111020457A (zh) * | 2019-11-26 | 2020-04-17 | 中国航发中传机械有限公司 | 一种弧齿锥齿轮的渗碳热处理控制方法 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1130514A (ja) * | 1997-07-11 | 1999-02-02 | Polyplastics Co | 樹脂成形歯車の精度算出方法、これを用いた歯車金型製造方法及び樹脂成形歯車 |
US20010020420A1 (en) * | 2000-01-05 | 2001-09-13 | Heinz-Michael Zaoralek | Roll assembly and roll |
KR20020058733A (ko) * | 2000-12-30 | 2002-07-12 | 이계안 | 구멍용 모따기 가공 방법 |
JP2006009118A (ja) * | 2004-06-29 | 2006-01-12 | Sumitomo Denko Shoketsu Gokin Kk | 鉄系焼結機械部品の製造方法 |
CN111020457A (zh) * | 2019-11-26 | 2020-04-17 | 中国航发中传机械有限公司 | 一种弧齿锥齿轮的渗碳热处理控制方法 |
CN110904306A (zh) * | 2020-01-02 | 2020-03-24 | 重庆齿轮箱有限责任公司 | 一种零件缩孔方法和一种零件缩孔工装 |
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