WO2023000607A1 - 一种航空航天用异形调心轴承磨床辅助加工装置 - Google Patents

一种航空航天用异形调心轴承磨床辅助加工装置 Download PDF

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WO2023000607A1
WO2023000607A1 PCT/CN2021/139661 CN2021139661W WO2023000607A1 WO 2023000607 A1 WO2023000607 A1 WO 2023000607A1 CN 2021139661 W CN2021139661 W CN 2021139661W WO 2023000607 A1 WO2023000607 A1 WO 2023000607A1
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Prior art keywords
bearing
transition plate
hole
processing device
axis
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PCT/CN2021/139661
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English (en)
French (fr)
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张博威
徐英超
伍卫东
肖琪
张亚晓
黄晓春
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航天精工股份有限公司
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Publication of WO2023000607A1 publication Critical patent/WO2023000607A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces

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  • the invention belongs to the field of bearing processing equipment, and in particular relates to an auxiliary processing device for a special-shaped self-aligning bearing grinding machine for aerospace.
  • the present invention aims to propose an auxiliary processing device for special-shaped self-aligning bearing grinding machines for aerospace, so as to improve the precision of processing special-shaped bearings, realize batch production, reduce loss and reduce costs.
  • An auxiliary processing device for a special-shaped self-aligning bearing grinding machine for aerospace including a transition plate, and the transition plate is coaxially fixed with the grinding machine;
  • the balance weight is detachably connected to the transition plate
  • the pressure plate is detachably connected to the transition plate, and the pressure plate is used to press the bearing against the transition plate;
  • the stopper assembly is detachably connected to the transition plate, and the stopper assembly is against the side wall of the bearing;
  • the centering shaft is used for inserting into the through hole in the bearing so that the axis of the through hole in the bearing coincides with the axis of the transition plate.
  • a boss is provided on the grinder, and a positioning groove matching the boss is provided on the transition plate.
  • balance weight is arc-shaped, and there are multiple balance weights around the axis of the transition plate.
  • a gasket is provided on the side of the pressure plate in contact with the bearing.
  • the stopper assembly includes an end limit stopper, a sidewall limit stopper and a radial limit stopper, the end limit stopper abuts against one end of the bearing, and the sidewall limit stopper
  • the stopper is opposed to the two sides of the bearing, and two radial limit stoppers are oppositely provided, and the adjacent surfaces of the two radial limit stoppers are provided with limit grooves for the bearing to be inserted into.
  • a positioning hole is coaxially opened in the middle part of the transition plate, a positioning rod matched with the positioning hole is provided at one end of the centering shaft, a tapered surface is provided in the middle part of the centering shaft, and the communication between the tapered surface and the bearing The inner wall of the hole is offset so that the through hole of the bearing coincides with the axis of the positioning hole of the transition plate.
  • a method for processing special-shaped self-aligning bearings for aerospace uses the auxiliary processing device described above.
  • the special-shaped self-aligning bearing grinding machine auxiliary processing device for aerospace of the present invention has the following advantages:
  • the auxiliary processing device of the present invention changes the mechanism clamping mode of the outer ring of the bearing by adopting non-rigid compression, and at the same time adds a balance weight as a counterweight, and adjusts the static balance and dynamic balance without using any electronic
  • the equipment can be controlled and adjusted only by a simple purely mechanical method, so that the product can meet the processing requirements, reduce the workload of manual operation, optimize the processing, improve the efficiency, and ensure the stable quality of the product;
  • the auxiliary processing device described in the present invention can meet the precision requirements of P4 grade bearings, and has reached higher machining precision;
  • the auxiliary processing device of the present invention is simple to operate and easy to use, and can be freely adjusted according to the shape of the bearing, and can be mass-produced after one adjustment, greatly improving the processing efficiency;
  • the auxiliary processing device described in the present invention adopts a purely mechanical structure, which has low cost, low difficulty in operation, and reduces the cost of use and maintenance.
  • Fig. 1 is a schematic diagram of the front view structure of the auxiliary processing device described in the embodiment of the present invention in use;
  • Fig. 2 is a left view structural diagram of the auxiliary processing device described in the embodiment of the present invention in use;
  • Fig. 3 is a front structural schematic diagram of the pressing plate described in the embodiment of the present invention.
  • Fig. 4 is a schematic cross-sectional structure diagram of the pressing plate described in the embodiment of the present invention.
  • Fig. 5 is a schematic cross-sectional structure diagram of a balance weight according to an embodiment of the present invention.
  • Fig. 6 is a front structural schematic diagram of the balance weight described in the embodiment of the present invention.
  • Fig. 7 is a schematic structural view of the centering shaft described in the embodiment of the present invention.
  • Machine tool spindle 2. Transition plate; 3. Balance weight; 4. Pressure plate; 5. Side wall limit stopper; 6. Radial limit stopper; 7. End limit stopper; 8. Centering Shaft; 9, positioning rod; 10, tapered surface; 11, spacer.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.
  • the special-shaped self-aligning bearing grinding machine auxiliary processing device for aerospace in the present invention includes a transition plate 2, a balance weight 3, a pressure plate 4, a block assembly, and a centering shaft 8.
  • the clamping end of the grinding machine is provided with a convex
  • the transition plate 2 is provided with a positioning groove that matches the boss. After the boss and the positioning groove are matched, the transition plate 2 and the grinding machine are coaxially fixed by bolts.
  • the balance block 3 and the transition plate 2 are detachably connected, as shown in the figure As shown in 5-6, the balance weight 3 is in the shape of an arc, and the center of the arc coincides with the axis of the transition plate 2.
  • the transition plate 2 is surrounded by a plurality of connection holes for installing the balance weight 3, and the balance weight 3 surrounds There are multiple axes of the transition plate 2.
  • the number of balance weights 3 can be adjusted according to the needs, and the position can also be changed freely during the leveling process.
  • the pressure plate 4 is detachably connected to the transition plate 2, and the pressure plate There is a waist-shaped hole in the middle of 4.
  • the bolt passes through the waist-shaped hole on the pressure plate 4 to detachably connect the pressure plate 4 and the transition plate 2.
  • the position of the pressure plate 4 can be adjusted through the waist-shaped hole to adapt to bearings of different specifications.
  • the pressure plate 4 and the bearing The adjacent end is provided with a relief groove.
  • the shape of the relief groove corresponds to the outline of the through hole on the bearing, so that the grinding machine can smoothly extend into the bearing for processing.
  • the pressure plate 4 is used to press the bearing against the transition plate 2.
  • the side of the pressure plate 4 in contact with the bearing is provided with a gasket 11.
  • the material of the gasket 11 in this embodiment is nylon, which prevents the direct friction between the bearing and the pressure plate 4 from causing the wear of the bearing or the auxiliary processing device, and the compression of the pressure plate 4 and the bearing. It is a non-rigid contact, which can press the product while enabling the bearing to play a role of micro-self-alignment in the process of rotation, so as to achieve the purpose of improving the machining accuracy of the bearing.
  • the stopper assembly is detachably connected with the transition plate 2, and the stopper
  • the component and the side wall of the bearing play a role in limiting the displacement of the bearing, preventing the bearing from shaking during the process and reducing the machining accuracy.
  • the stopper component includes the end limit stop 7, the side wall limit stop 5 and the radial limit stop Block 6,
  • the bearing in this embodiment includes a rod portion and a ring portion, and the end limit block 7 and the radial limit block 6 are respectively arranged at the two ends of the bearing to limit the shaking of the bearing along the length direction, and the end limit block
  • the position stopper 7 is offset against the ring part of the bearing, and the sidewall limit stopper 5 is arranged in pairs, the sidewall limit stopper 5 is offset against both sides of the bearing rod, and the radial limit stopper 6 is oppositely arranged.
  • the centering shaft 8 is used to insert the through hole in the bearing to make the bearing
  • the axis of the through hole coincides with the axis of the transition plate 2.
  • the middle part of the transition plate 2 is coaxially provided with a positioning hole.
  • the surface 10, the tapered surface 10 and the inner wall of the through hole of the bearing are offset to make the through hole of the bearing coincide with the axis of the positioning hole of the transition plate 2, so as to ensure that the axis of the through hole on the bearing coincides with the axis of the grinding machine shaft during processing, and improve the processing quality .
  • the auxiliary processing device is installed.
  • the transition plate 2 is coaxially fixed to the grinding machine through bolts, and the balance block 3, the pressure plate 4, and the block assembly are respectively connected to the transition plate 2;

Abstract

提供一种航空航天用异形调心轴承磨床辅助加工装置，包括过渡盘（2）、平衡块（3）、压板（4）、挡块组件、定心轴（8），过渡盘（2）与磨床同轴固接，平衡块（3）与过渡盘（2）可拆卸连接，压板（4）与过渡盘（2）可拆卸连接，压板（4）用于将轴承抵紧于过渡盘（2）上，挡块组件与过渡盘（2）可拆卸连接，挡块组件与轴承侧壁相抵，定心轴（8）用于插入轴承内通孔使轴承内通孔的轴线与过渡盘（2）的轴线重合。辅助加工装置通过采用非刚性压紧，改变轴承外圈的机构夹紧方式，同时增加平衡块（3）作为配重，通过静平衡和动平衡调节的方法，无需采用任何电子设备，仅仅采用简单的纯机械的方式进行控制调节，即可使产品满足加工要求，减少人工操作的工作量，优化加工，提高了效率，确保产品稳定质量。

Description

一种航空航天用异形调心轴承磨床辅助加工装置 技术领域
本发明属于轴承加工设备领域，尤其是涉及一种航空航天用异形调心轴承磨床辅助加工装置。
背景技术
现有加工技术中的，对非对称结构的外圈磨削过程中会产生较大的偏心，引起机床的振动，工件主轴的跳动增加进而影响主轴精度，同时轴承沟道的磨削精度也会受到严重的影响，如圆度、椭圆度以及尺寸精度等很难满足高精度以及小游隙的要求。尤其是在轴承高速工作的情况下，振动和噪声的影响更大，很难满足交付的要求。另外，航空航天轴承对制造原材料的要求较高，制造的成本也相应较高，加工出不合格零件也会增大轴承的制造成本，造成较大的损失。在现有的加工制造中，航空航天用小游隙轴承制造领域，甚至只能从大量的产品里面挑出个别满足要求的精品进行产品交付。
发明内容
有鉴于此，本发明旨在提出一种航空航天用异形调心轴承磨床辅助加工装置，以提高对异性轴承加工的精度，实现批量化生产，减少损耗，降低成本。
为达到上述目的，本发明的技术方案是这样实现的：
一种航空航天用异形调心轴承磨床辅助加工装置，包括过渡盘，所述过渡盘与磨床同轴固接；
平衡块，所述平衡块与过渡盘可拆卸连接；
压板，所述压板与过渡盘可拆卸连接，压板用于将轴承抵紧于过渡盘上；
挡块组件，所述挡块组件与过渡盘可拆卸连接，挡块组件与轴承侧壁相抵；
定心轴，所述定心轴用于插入轴承内通孔使轴承内通孔的轴线与过渡盘的轴线重合。
进一步地，所述磨床上设有凸台，所述过渡盘上设有与凸台相配合的定位槽。
进一步地，所述平衡块呈圆弧状，平衡块环绕过渡盘轴线设有多个。
进一步地，所述压板中部开有腰型孔，螺栓穿过压板上的腰型孔使压板与过渡盘可拆卸连接，压板与轴承相邻的一端设有让位槽。
进一步地，所述压板与轴承接触的一面设有垫片。
进一步地，所述挡块组件包括端部限位挡块、侧壁限位挡块及径向限位挡块，所述端部限位挡块与轴承的一端相抵，所述侧壁限位挡块与轴承的两侧相抵，所述径向限位挡块相对设有两个，两个径向限位挡块的相邻面设有供轴承插入的限位槽。
进一步地，所述过渡盘中部同轴开有定位孔，所述定心轴的一端设有与定位孔配合的定位杆，定心轴的中部设有锥形面，锥形面与轴承的通孔内壁相抵使轴承的通孔与过渡盘的定位孔轴线重合。
一种航空航天用异形调心轴承的加工方法，应用了如上任一所述的辅助加工装置。
进一步地，包括以下步骤：
将过渡盘与磨床固接，通过压板及挡块组件将轴承装夹在过渡盘上，定心轴穿过轴承的通孔使轴承通孔的轴线与过渡盘的轴线重合，将平衡块安装在过渡盘上，对装夹后的辅助加工装置进行静平衡调试。
进一步地，还包括以下步骤：调试完毕后，对轴承进行试磨并对磨削后的轴承进行检验。
相对于现有技术，本发明所述的航空航天用异形调心轴承磨床辅助加工装置具有以下优势：
(1)本发明所述的辅助加工装置通过采用非刚性压紧，改变轴承外圈的机构夹紧方式，同时增加平衡块作为配重，通过静平衡和动平衡调节的方法，无需采用任何电子设备，仅仅采用简单的纯机械的方式进行控制调节，即可使产品满足加工要求，减少人工操作的工作量，优化加工，提高了效率，确保产品稳定质量；
(2)本发明所述的辅助加工装置能够满足P4级轴承的精度要求，达到了较高的加工精度；
(3)本发明所述的辅助加工装置操作简单，使用方便，可以根据轴承的形状进行自由调节，一次调节后可以进行批量化生产，极大提高了加工效率；
(4)本发明所述的辅助加工装置采用纯机械结构，成本低，操作难度低，降低了使用及维护成本。
附图说明
构成本发明的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明实施例所述的辅助加工装置的使用状态主视结构示意图；
图2为本发明实施例所述的辅助加工装置的使用状态左视结构示意图；
图3为本发明实施例所述的压板的主视结构示意图；
图4为本发明实施例所述的压板的剖视结构示意图；
图5为本发明实施例所述的平衡块的剖视结构示意图；
图6为本发明实施例所述的平衡块的主视结构示意图；
图7为本发明实施例所述的定心轴的结构示意图。
附图标记说明：
1、机床主轴；2、过渡盘；3、平衡块；4、压板；5、侧壁限位挡块；6、径向限位挡块；7、端部限位挡块；8、定心轴；9、定位杆；10、锥形面；11、垫片。
具体实施方式
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也 可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以通过具体情况理解上述术语在本发明中的具体含义。
下面将参考附图并结合实施例来详细说明本发明。
如图所示，本发明中的航空航天用异形调心轴承磨床辅助加工装置包括过渡盘2、平衡块3、压板4、挡块组件、定心轴8，磨床的夹持端上设有凸台，过渡盘2上设有与凸台相配合的定位槽，凸台与定位槽配合后通过螺栓将过渡盘2与磨床同轴固接，平衡块3与过渡盘2可拆卸连接，如图5-6所示，平衡块3呈圆弧状，圆弧的圆心与过渡盘2的轴心重合，过渡盘2上环绕设有多个用于安装平衡块3的连接孔，平衡块3环绕过渡盘2的轴线设有多个，平衡块3可以根据需要调节安装数量，也可以在调平过程中自由更换位置，如图3-4所示，压板4与过渡盘2可拆卸连接，压板4中部开有腰型孔，螺栓穿过压板4上的腰型孔使压板4与过渡盘2可拆卸连接，通过腰型孔可以调节压板4的位置以适应不同规格的轴承，压板4与轴承相邻的一端设有让位槽，让位槽的形状与轴承上通孔的轮廓相对应，使磨床能够顺利伸入轴承内进行加工，压板4用于将轴承抵紧于过渡盘2上，压板4与轴承接触的一面设有垫片11，本实施例中的垫片11材质为尼龙，防止轴承与压板4之间直接发生摩擦造成轴承或辅助加工装置磨损，压板4与轴承的压紧为非刚性接触，能够压住产品的同时使轴承能够在旋转的过程中起到微量自调心的作用，达到提高轴承的加工精度的目的，挡块组件与过渡盘2可拆卸连接，挡块组件与轴承侧壁相抵起到限制轴承位移的作用，防止加工过程中轴承发生晃动导致加工精度降低，挡块组件包括端部限位挡块7、侧壁限位挡块5及径向限位挡块6，本实施例中的轴承包括杆部及环部，端部限位挡块7及径向限位挡块6分别设于轴承的两端，限制轴承沿长度方向晃动，端部 限位挡块7与轴承的环部相抵，侧壁限位挡块5为两两对应设置，侧壁限位挡块5与轴承杆部的两侧相抵，径向限位挡块6相对设有两个，两个径向限位挡块6的相邻面设有供轴承杆部插入的限位槽，以限制杆部的左右晃动，定心轴8用于插入轴承内通孔使轴承内通孔的轴线与过渡盘2的轴线重合，过渡盘2中部同轴开有定位孔，定心轴8的一端设有与定位孔配合的定位杆9，定心轴8的中部设有锥形面10，锥形面10与轴承的通孔内壁相抵使轴承的通孔与过渡盘2的定位孔轴线重合，确保加工过程中轴承上的通孔的轴线与磨床转轴的轴线重合，提高加工质量。
使用本发明中的航空航天用异形调心轴承磨床辅助加工装置进行加工的方法如下：
(1)辅助加工装置安装，首先将过渡盘2通过螺栓与磨床同轴固接，将平衡块3、压板4、挡块组件分别与过渡盘2连接；
(2)装夹轴承，将轴承与过渡盘2抵接，调节压板4及挡块组件将轴承预装夹，以轴承不会从加工装置上掉落为准，将定心轴8插入轴承，通过定位杆9及锥形面10的定位导向作用，将轴承的通孔与过渡盘2上的定位孔对正，完成装夹；
(3)静平衡调节，调节平衡块3的位置对加工装置进行静平衡调节，其调节方法与砂轮静平衡调试类似，静平衡调节完毕后，拧紧用于安装卡板、挡块组件及平衡块3的螺栓，使轴承完全固定；
(4)动平衡调节，轴承固定好后，对轴承外圈沟道进行试磨，磨削完毕后进行质量检验，检验合格后即可进行批量加工，若检验不合格，则重复步骤(3)，直至检验合格。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在 本发明的保护范围之内。

Claims (10)

  1. 一种航空航天用异形调心轴承磨床辅助加工装置，其特征在于：包括过渡盘，所述过渡盘与磨床同轴固接；
    平衡块，所述平衡块与过渡盘可拆卸连接；
    压板，所述压板与过渡盘可拆卸连接，压板用于将轴承抵紧于过渡盘上；
    挡块组件，所述挡块组件与过渡盘可拆卸连接，挡块组件与轴承侧壁相抵；
    定心轴，所述定心轴用于插入轴承内通孔使轴承内通孔的轴线与过渡盘的轴线重合。
  2. 根据权利要求1所述的辅助加工装置，其特征在于：所述磨床上设有凸台，所述过渡盘上设有与凸台相配合的定位槽。
  3. 根据权利要求1所述的辅助加工装置，其特征在于：所述平衡块呈圆弧状，平衡块环绕过渡盘轴线设有多个。
  4. 根据权利要求1所述的辅助加工装置，其特征在于：所述压板中部开有腰型孔，螺栓穿过压板上的腰型孔使压板与过渡盘可拆卸连接，压板与轴承相邻的一端设有让位槽。
  5. 根据权利要求1所述的辅助加工装置，其特征在于：所述压板与轴承接触的一面设有垫片。
  6. 根据权利要求1所述的辅助加工装置，其特征在于：所述挡块组件包括端部限位挡块、侧壁限位挡块及径向限位挡块，所述端部限位挡块与轴承的一端相抵，所述侧壁限位挡块与轴承的两侧相抵，所述径向限位挡块相对设有两个，两个径向限位挡块的相邻面设有供轴承插入的限位槽。
  7. 根据权利要求1所述的辅助加工装置，其特征在于：所述过渡盘中部同轴开有定位孔，所述定心轴的一端设有与定位孔配合的定位杆，定心轴的 中部设有锥形面，锥形面与轴承的通孔内壁相抵使轴承的通孔与过渡盘的定位孔轴线重合。
  8. 一种航空航天用异形调心轴承的加工方法，其特征在于，应用了如权利要求1-7任一所述的辅助加工装置。
  9. 根据权利要求8所述的加工方法，其特征在于，包括以下步骤：
    将过渡盘与磨床固接，通过压板及挡块组件将轴承装夹在过渡盘上，定心轴穿过轴承的通孔使轴承通孔的轴线与过渡盘的轴线重合，将平衡块安装在过渡盘上，对装夹后的辅助加工装置进行静平衡调试。
  10. 根据权利要求9所述的加工方法，其特征在于，还包括以下步骤：调试完毕后，对轴承进行试磨并对磨削后的轴承进行检验。
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