CN110081072A - 薄壁轴承及其加工工艺 - Google Patents

薄壁轴承及其加工工艺 Download PDF

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CN110081072A
CN110081072A CN201910341772.4A CN201910341772A CN110081072A CN 110081072 A CN110081072 A CN 110081072A CN 201910341772 A CN201910341772 A CN 201910341772A CN 110081072 A CN110081072 A CN 110081072A
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陈宝国
王成
郭晶
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Jiangsu Wanda Special Bearing Co Ltd
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Priority to CN201910341772.4A priority patent/CN110081072A/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/46—Shaping by deformation without removing material by forging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/62—Shaping by removing material, e.g. machining by turning, boring, drilling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/70—Shaping by removing material, e.g. machining by grinding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/02—Mechanical treatment, e.g. finishing
    • F16C2223/06—Mechanical treatment, e.g. finishing polishing
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
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    • F16C2240/46—Gap sizes or clearances

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Abstract

本发明涉及一种薄壁轴承，它包括有外圈、内圈；所述外圈的内圈面上设有外圈滚道，所述内圈的外圈面上设有内圈滚道，外圈滚道、内圈滚道之间设有钢球以及用于安装钢球的保持架；所述外圈侧壁一周圈均匀分布设置有若干螺孔，螺孔内分别设置有滚花螺钉，滚花螺钉与螺孔10‑Φ9配合为N6/h5；所述薄壁轴承的径向游隙大于等于0.01小于等于0.09；及其一种加工方法，通过控制了非标滚花螺钉的直径相互差，从而来确保了通配的可能性，提高了安装效率，节约了装配时间；采用铰刀配差，有效确保了螺钉与孔的实际过盈量，且工序质量更稳定；热处理工艺验证后得出的安装孔的变形修正量更精准，同时对产品的热处理工艺参数进行了固定。

Description

薄壁轴承及其加工工艺
技术领域
本发明涉及轴承加工技术领域，具体涉及一种薄壁轴承及其加工工艺。
背景技术
以往在加工薄壁轴承过程中存在一些问题，如下：
1）滚花螺钉与孔的配合10—φ9（N6/h5）,在实际加工困难。
2）滚花螺钉与螺孔配合，因滚花螺钉为非标螺钉，在装配后，由于轴承壁厚较薄，大直径的滚花螺钉会挤压轴承外圈，从而使得轴承的径向游隙减小，进而使得装配好的轴承加装滚花螺钉后经常出现轴承旋转不好及不转现象。
3） 且滚花螺钉滚花尺寸散差大导致实际安装时有螺钉过紧或过松。
发明内容
为解决上述问题，本发明提出一种薄壁轴承及其加工工艺。
本发明的技术方案：
一种薄壁轴承，它包括有外圈、内圈；所述外圈的内圈面上设有外圈滚道，所述内圈的外圈面上设有内圈滚道，外圈滚道、内圈滚道之间设有钢球以及用于安装钢球的保持架；所述外圈侧壁一周圈均匀分布设置有若干螺孔，螺孔大小是Φ9，螺孔内分别设置有滚花螺钉，滚花螺钉与螺孔配合为N6/h5；所述薄壁轴承的径向游隙大于等于0.01小于等于0.09。
一种上述薄壁轴承的加工工艺，所述滚花螺钉为非标螺钉，其尺寸之间存在直径相互差；它包括如下工艺步骤：
1）轴承加工
根据薄壁轴承的工艺尺寸、要求分别加工外圈、内圈、保持架、以及钢珠。
2）轴承组装
对加工完的外圈、内圈、钢珠以及保持架进行合套装配。
3）装滚花螺钉
分别将滚花螺钉拧入外圈上的螺孔内，完成薄壁轴承的加工。
在步骤（1）中所述外圈的加工工艺，先锻造棒料或管料，对锻造之后的粗坯进行退火，然后进行车削加工以及螺孔加工，对加工的半成品进行热处理淬火，然后对两个端面进行打磨处理，并对外圈的外圆面进行粗磨，然后对外圈的外圆面进行精磨，然后对外滚道进行粗磨和细磨处理，最后进行退磁清洗。
螺孔加工工艺；统一滚花螺钉尺寸，控制直径相互差，确定螺孔的尺寸，并钻孔；依据滚花螺钉的实际直径，采用铰刀进行实际配差铰削，完成螺孔的加工；控制螺孔与滚花螺钉的过盈量≤0.015。
在步骤2中合套时，控制轴承最小游隙为0.045。
对上述技术方案作进一步的改进和细化，在步骤（1）中通过工艺试验对外圈热处理淬火后的螺孔的变形量进行验证，修正淬火前螺孔的铰削尺寸。
本发明优点是，设计合理，构思巧妙，且产生了如下有益效果：
1）通过控制了非标滚花螺钉的直径相互差，从而来确保了通配的可能性，提高了安装效率，节约了装配时间。
2）采用铰刀配差，有效确保了螺钉与孔的实际过盈量，且工序质量更稳定。
3）热处理工艺验证后得出的安装孔的变形修正量更精准，同时对产品的热处理工艺参数进行了固定。
附图说明
图1是薄壁轴承结构示意图。
图2是薄壁轴承局部半剖示意图。
图中 外圈1 内圈2 钢球3 保持架4 密封圈5 螺孔6 滚花螺钉7。
具体实施方式
如图1-2所示，一种薄壁轴承，它包括有外圈1、内圈2；所述外圈1的内圈面上设有外圈滚道，所述内圈2的外圈面上设有内圈滚道，外圈滚道、内圈滚道之间设有钢球3以及用于安装钢球3的保持架4，外圈1与内圈2之间还设置有密封圈5；所述外圈2侧壁一周圈均匀分布设置有10个螺孔6，螺孔6大小是Φ9，螺孔6内分别设置有滚花螺钉7，滚花螺钉7与螺孔6配合为N6/h5；所述薄壁轴承的径向游隙大于等于0.01小于等于0.09。
一种上述薄壁轴承的加工工艺，所述滚花螺钉7为非标螺钉，其尺寸之间存在直径相互差；它包括如下工艺步骤：
1）轴承加工
根据薄壁轴承的工艺尺寸、要求分别加工外圈1、内圈2、保持架4、以及钢珠3。
2）轴承组装
对加工完的外圈1、内圈3、钢珠3以及保持架4进行合套装配。
3）装滚花螺钉
分别将滚花螺钉5拧入外圈1上的螺孔6内，完成薄壁轴承的加工。
在步骤（1）中所述外圈1的加工工艺，先锻造棒料或管料，对锻造之后的粗坯进行退火，然后进行车削加工以及螺孔加工，对加工的半成品进行热处理淬火，然后对两个端面进行打磨处理，并对外圈的外圆面进行粗磨，然后对外圈的外圆面进行精磨，然后对外滚道进行粗磨和细磨处理，最后进行退磁清洗。
螺孔6加工工艺；统一滚花螺钉7尺寸为9mm，控制直径相互差+0.05mm，确定螺孔6的尺寸8.7mm，并通过8.7mm的钻头钻孔；依据滚花螺钉7的实际直径，采用9mm铰刀进行实际配差铰削，完成螺孔6的加工；控制螺孔6与滚花螺钉7的过盈量≤0.015，即用滚花螺钉试插，能轻轻敲进去，不松动；通过工艺试验对外圈1热处理淬火后的螺孔6的变形量进行验证，修正淬火前螺孔6的铰削尺寸。
在步骤2中合套时，控制轴承最小游隙为0.045。
由于文字表达的有限性，而客观上存在无限的具体结构，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进、润饰或变化，也可以将上述技术特征以适当的方式进行组合；这些改进润饰、变化或组合，或未经改进将发明的构思和技术方案直接应用于其它场合的，均应视为本发明的保护范围。

Claims (3)

1.一种薄壁轴承，它包括有外圈、内圈；所述外圈的内圈面上设有外圈滚道，所述内圈的外圈面上设有内圈滚道，外圈滚道、内圈滚道之间设有钢球以及用于安装钢球的保持架；其特征在于，所述外圈侧壁一周圈均匀分布设置有若干螺孔，螺孔大小是Φ9，螺孔内分别设置有滚花螺钉，滚花螺钉与螺孔配合为N6/h5；所述薄壁轴承的径向游隙大于等于0.01小于等于0.09。
2.一种权利要求1所述的薄壁轴承的加工工艺，所述滚花螺钉为非标螺钉，其尺寸之间存在直径差；其特征在于，它包括如下工艺步骤：
1）轴承加工
根据薄壁轴承的工艺尺寸、要求分别加工外圈、内圈、保持架、以及钢珠；
2）轴承组装
对加工完的外圈、内圈、钢珠以及保持架进行合套装配；
3）装滚花螺钉
分别将滚花螺钉拧入外圈上的螺孔内，完成薄壁轴承的加工；
在步骤（1）中所述外圈的加工工艺，先锻造棒料或管料，对锻造之后的粗坯进行退火，然后进行车削加工以及螺孔加工，对加工的半成品进行热处理淬火，然后对两个端面进行打磨处理，并对外圈的外圆面进行粗磨，然后对外圈的外圆面进行精磨，然后对外滚道进行粗磨和细磨处理，最后进行退磁清洗；
螺孔加工工艺；统一滚花螺钉尺寸，控制直径相互差，确定螺孔的尺寸，并钻孔；依据滚花螺钉的实际直径，采用铰刀进行实际配差铰削，完成螺孔的加工；控制螺孔与滚花螺钉的过盈量≤0.015；
在步骤2中合套时，控制轴承最小游隙为0.045。
3.根据权利要求2所述的加工工艺，其特征在于，在步骤（1）中通过工艺试验对外圈热处理淬火后的螺孔的变形量进行验证，修正淬火前螺孔的铰削尺寸。
CN201910341772.4A 2019-04-26 2019-04-26 薄壁轴承及其加工工艺 Pending CN110081072A (zh)

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US16/764,382 US11221045B2 (en) 2019-04-26 2019-04-26 Thin-wall bearing and processing method thereof
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