阅读说明：本技术 一种航空航天用异形调心轴承磨床辅助加工装置 (Aerospace is with supplementary processingequipment of dysmorphism self-aligning bearing grinding machine ) 是由 张博威 徐英超 伍卫东 肖琪 张亚晓 黄晓春 于 2021-07-20 设计创作，主要内容包括：本发明提供了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、平衡块、压板、挡块组件、定心轴,所述过渡盘与磨床同轴固接,平衡块与过渡盘可拆卸连接,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,挡块组件与过渡盘可拆卸连接,挡块组件与轴承侧壁相抵,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。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。(The invention provides an auxiliary processing device of a special-shaped self-aligning bearing grinding machine for aerospace, which comprises a transition disc, a balance block, a pressing plate, a stop block assembly and a centering shaft, wherein the transition disc is coaxially and fixedly connected with the grinding machine, the balance block is detachably connected with the transition disc, the pressing plate is used for abutting a bearing against the transition disc, the stop block assembly is detachably connected with the transition disc, the stop block assembly abuts against the side wall of the bearing, and the centering shaft is used for being inserted into a through hole in the bearing to enable the axis of the through hole in the bearing to coincide with the axis of the transition disc. The auxiliary processing device changes the mechanism clamping mode of the bearing outer ring by adopting non-rigid compression, simultaneously adds the balance block as the balance weight, and controls and adjusts the balance weight by adopting a simple purely mechanical mode without adopting any electronic equipment through a static balance and dynamic balance adjusting method, so that the product can meet the processing requirement, the workload of manual operation is reduced, the processing is optimized, the efficiency is improved, and the stable quality of the product is ensured.)

1. The utility model provides an aerospace is with supplementary processingequipment of dysmorphism self-aligning bearing grinding machine which characterized in that: the transition disc is coaxially and fixedly connected with the grinding machine;

the balance block is detachably connected with the transition disc;

the pressure plate is detachably connected with the transition disc and is used for tightly abutting the bearing on the transition disc;

the stop block assembly is detachably connected with the transition disc and abuts against the side wall of the bearing;

and the centering shaft is used for being inserted into the through hole in the bearing, so that the axis of the through hole in the bearing is coincident with the axis of the transition disc.

2. The auxiliary processing apparatus according to claim 1, wherein: the grinding machine is provided with a boss, and the transition disc is provided with a positioning groove matched with the boss.

3. The auxiliary processing apparatus according to claim 1, wherein: the balancing piece is circular-arc, and the balancing piece encircles the transition dish axis and is equipped with a plurality ofly.

4. The auxiliary processing apparatus according to claim 1, wherein: the middle part of the pressing plate is provided with a waist-shaped hole, the bolt penetrates through the waist-shaped hole on the pressing plate to enable the pressing plate to be detachably connected with the transition disc, and one end of the pressing plate adjacent to the bearing is provided with a yielding groove.

5. The auxiliary processing apparatus according to claim 1, wherein: and a gasket is arranged on one surface of the pressing plate, which is contacted with the bearing.

6. The auxiliary processing apparatus according to claim 1, wherein: the stop block assembly comprises an end limiting stop block, two side wall limiting stop blocks and two radial limiting stop blocks, wherein the end limiting stop blocks are abutted against one end of the bearing, the side wall limiting stop blocks are abutted against two sides of the bearing, and adjacent surfaces of the two radial limiting stop blocks are provided with limiting grooves for the bearing to insert.

7. The auxiliary processing apparatus according to claim 1, wherein: the middle part of the transition disc is coaxially provided with a positioning hole, one end of the centering shaft is provided with a positioning rod matched with the positioning hole, the middle part of the centering shaft is provided with a conical surface, and the conical surface is abutted against the inner wall of the through hole of the bearing to enable the through hole of the bearing to be coincident with the axis of the positioning hole of the transition disc.

8. A method for machining a special-shaped self-aligning bearing for aerospace, characterized in that the auxiliary machining device according to any one of claims 1 to 7 is applied.

9. The process according to claim 8, characterized in that it comprises the following steps:

the transition disc is fixedly connected with the grinding machine, the bearing is clamped on the transition disc through the pressing plate and the stop block assembly, the centering shaft penetrates through the through hole of the bearing to enable the axis of the through hole of the bearing to be coincident with the axis of the transition disc, the balance block is installed on the transition disc, and static balance debugging is carried out on the clamped auxiliary processing device.

10. The process of claim 9, further comprising the steps of: after debugging is finished, trial grinding is carried out on the bearing, and the ground bearing is inspected.

Technical Field

The invention belongs to the field of bearing machining equipment, and particularly relates to an auxiliary machining device of a special-shaped self-aligning bearing grinding machine for aerospace.

Background

In the prior art, the asymmetric outer ring grinding process can generate large eccentricity to cause vibration of a machine tool, the jump of a workpiece spindle is increased to further influence the precision of the spindle, and meanwhile, the grinding precision of a bearing channel can also be seriously influenced, such as roundness, ovality, size precision and the like, which hardly meet the requirements of high precision and small clearance. Especially, in the case of a bearing operating at a high speed, the influence of vibration and noise is large, and it is difficult to meet the requirement of delivery. In addition, the aviation aerospace bearing has high requirements on manufacturing raw materials, the manufacturing cost is correspondingly high, and the manufacturing cost of the bearing is increased by processing unqualified parts, so that the great loss is caused. In the existing processing and manufacturing field of small-clearance bearings for aerospace, even a fine product meeting requirements can be picked out from a large number of products for product delivery.

Disclosure of Invention

In view of this, the invention aims to provide an auxiliary processing device for a special-shaped self-aligning bearing grinding machine for aerospace, so as to improve the processing precision of the opposite-shaped bearing, realize mass production, reduce loss and reduce cost.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the auxiliary processing device of the special-shaped self-aligning bearing grinding machine for aerospace comprises a transition disc, wherein the transition disc is coaxially and fixedly connected with the grinding machine;

the balance block is detachably connected with the transition disc;

the pressure plate is detachably connected with the transition disc and is used for tightly abutting the bearing on the transition disc;

the stop block assembly is detachably connected with the transition disc and abuts against the side wall of the bearing;

and the centering shaft is used for being inserted into the through hole in the bearing, so that the axis of the through hole in the bearing is coincident with the axis of the transition disc.

Furthermore, a boss is arranged on the grinding machine, and a positioning groove matched with the boss is arranged on the transition disc.

Furthermore, the balancing piece is circular-arc, and the balancing piece encircles the transition dish axis and is equipped with a plurality ofly.

Furthermore, a waist-shaped hole is formed in the middle of the pressing plate, the bolt penetrates through the waist-shaped hole in the pressing plate to enable the pressing plate to be detachably connected with the transition disc, and a yielding groove is formed in one end, adjacent to the bearing, of the pressing plate.

Furthermore, a gasket is arranged on one surface of the pressure plate, which is in contact with the bearing.

Furthermore, the stop block assembly comprises an end limit stop, a side wall limit stop and two radial limit stop blocks, the end limit stop abuts against one end of the bearing, the side wall limit stop abuts against two sides of the bearing, the two radial limit stop blocks are arranged oppositely, and adjacent surfaces of the two radial limit stop blocks are provided with limit grooves for the bearing to insert.

Furthermore, a positioning hole is coaxially formed in the middle of the transition disc, a positioning rod matched with the positioning hole is arranged at one end of the centering shaft, a conical surface is arranged in the middle of the centering shaft, and the conical surface abuts against the inner wall of the through hole of the bearing to enable the through hole of the bearing to be coincident with the axis of the positioning hole of the transition disc.

A processing method of a special-shaped self-aligning bearing for aerospace uses any one of the above auxiliary processing devices.

Further, the method comprises the following steps:

the transition disc is fixedly connected with the grinding machine, the bearing is clamped on the transition disc through the pressing plate and the stop block assembly, the centering shaft penetrates through the through hole of the bearing to enable the axis of the through hole of the bearing to be coincident with the axis of the transition disc, the balance block is installed on the transition disc, and static balance debugging is carried out on the clamped auxiliary processing device.

Further, the method also comprises the following steps: after debugging is finished, trial grinding is carried out on the bearing, and the ground bearing is inspected.

Compared with the prior art, the auxiliary processing device for the aerospace special-shaped self-aligning bearing grinding machine has the following advantages:

(1) the auxiliary processing device changes the mechanism clamping mode of the bearing outer ring by adopting non-rigid compression, simultaneously adds the balance block as the balance weight, does not need to adopt any electronic equipment by adopting a static balance and dynamic balance adjusting method, and only adopts a simple purely mechanical mode to control and adjust, so that the product can meet the processing requirement, the workload of manual operation is reduced, the processing is optimized, the efficiency is improved, and the stable quality of the product is ensured;

(2) the auxiliary machining device can meet the precision requirement of a P4-grade bearing, and achieves higher machining precision;

(3) the auxiliary machining device is simple to operate and convenient to use, can be freely adjusted according to the shape of the bearing, can be produced in batch after being adjusted once, and greatly improves the machining efficiency;

(4) the auxiliary processing device provided by the invention adopts a pure mechanical structure, is low in cost and operation difficulty, and reduces the use and maintenance cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of an auxiliary processing device according to an embodiment of the present invention in a front view;

fig. 2 is a left side view schematically illustrating a structure of an auxiliary processing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic front view of a platen according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a platen according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a counterweight according to an embodiment of the invention;

FIG. 6 is a schematic front view of a weight according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a centering shaft according to an embodiment of the present invention.

Description of reference numerals:

1. a machine tool spindle; 2. a transition disk; 3. a counterbalance; 4. pressing a plate; 5. a side wall limit stop block; 6. a radial limit stop; 7. an end limit stop; 8. a centering shaft; 9. positioning a rod; 10. a conical surface; 11. and (7) a gasket.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in the figure, the auxiliary processing device of the aerospace special-shaped self-aligning bearing grinding machine comprises a transition disc 2, a balance block 3, a pressing plate 4, a stop block assembly and a centering shaft 8, wherein a boss is arranged on the clamping end of the grinding machine, a positioning groove matched with the boss is arranged on the transition disc 2, the transition disc 2 is coaxially and fixedly connected with the grinding machine through a bolt after the boss is matched with the positioning groove, the balance block 3 is detachably connected with the transition disc 2, as shown in figures 5-6, the balance block 3 is in an arc shape, the circle center of the arc is overlapped with the axle center of the transition disc 2, a plurality of connecting holes for installing the balance block 3 are arranged on the transition disc 2 in a surrounding manner, the balance block 3 is arranged in a plurality of surrounding manner around the axis of the transition disc 2, the installation number of the balance blocks 3 can be adjusted according to requirements, the position can also be freely changed in the leveling process, as shown in figures 3-4, the pressing plate 4 is detachably connected with the transition disc 2, the middle part of the pressure plate 4 is provided with a waist-shaped hole, a bolt passes through the waist-shaped hole on the pressure plate 4 to enable the pressure plate 4 to be detachably connected with the transition disc 2, the position of the pressure plate 4 can be adjusted through the waist-shaped hole to adapt to bearings of different specifications, one end of the pressure plate 4 adjacent to the bearing is provided with a abdicating groove, the shape of the abdicating groove corresponds to the outline of a through hole on the bearing, so that a grinding machine can smoothly extend into the bearing for processing, the pressure plate 4 is used for abutting the bearing against the transition disc 2, one surface of the pressure plate 4 contacting with the bearing is provided with a gasket 11, the gasket 11 in the embodiment is made of nylon, the bearing or an auxiliary processing device is prevented from being worn due to direct friction between the bearing and the pressure plate 4, the pressure plate 4 and the bearing are in non-rigid contact, the bearing can play a role of trace self-aligning in the rotating process when pressing a product, and the purpose of improving the processing precision of the bearing is achieved, the stop block assembly is detachably connected with the transition disc 2 and is abutted against the side wall of the bearing to play a role in limiting the displacement of the bearing, so that the reduction of the processing precision caused by the shaking of the bearing in the processing process is prevented, the stop block assembly comprises an end part limit stop 7, a side wall limit stop 5 and a radial limit stop 6, the bearing in the embodiment comprises a rod part and a ring part, the end part limit stop 7 and the radial limit stop 6 are respectively arranged at two ends of the bearing to limit the shaking of the bearing along the length direction, the end part limit stop 7 is abutted against the ring part of the bearing, the side wall limit stops 5 are arranged correspondingly in pairs, the side wall limit stops 5 are abutted against two sides of the rod part of the bearing, the radial limit stops 6 are oppositely arranged, the adjacent surfaces of the two radial limit stops 6 are provided with limit grooves for the rod part of the bearing to be inserted into so as to limit the left and right shaking of the rod part, the centering shaft 8 is used for being inserted into the through hole in the bearing to enable the axis of the through hole in the bearing to be coincided with the axis of the transition disc 2, the middle part of the transition disc 2 is coaxially provided with a positioning hole, one end of the centering shaft 8 is provided with a positioning rod 9 matched with the positioning hole, the middle part of the centering shaft 8 is provided with a conical surface 10, the conical surface 10 abuts against the inner wall of the through hole of the bearing to enable the through hole of the bearing to be coincident with the axis of the positioning hole of the transition disc 2, the coincidence of the axis of the through hole on the bearing and the axis of the rotating shaft of the grinding machine in the machining process is ensured, and the machining quality is improved.

The method for processing by using the auxiliary processing device of the special-shaped self-aligning bearing grinding machine for aerospace in the invention comprises the following steps:

(1) the auxiliary processing device is installed, firstly, the transition disc 2 is coaxially and fixedly connected with a grinding machine through bolts, and the balance block 3, the pressing plate 4 and the stop block assembly are respectively connected with the transition disc 2;

(2) clamping a bearing, abutting the bearing with the transition disc 2, pre-clamping the bearing by the adjusting pressure plate 4 and the stop block assembly, inserting the centering shaft 8 into the bearing on the basis that the bearing cannot fall off from the machining device, and aligning the through hole of the bearing with the positioning hole on the transition disc 2 through the positioning and guiding effects of the positioning rod 9 and the conical surface 10 to finish clamping;

(3) static balance adjustment, namely adjusting the position of a balance block 3 to perform static balance adjustment on the machining device, wherein the adjusting method is similar to the static balance adjustment of the grinding wheel, and after the static balance adjustment is finished, bolts for installing a clamping plate, a stop block assembly and the balance block 3 are screwed down to completely fix the bearing;

(4) and (4) adjusting dynamic balance, after the bearing is fixed, trial grinding is carried out on the bearing outer ring channel, quality inspection is carried out after grinding is finished, batch processing can be carried out after the inspection is qualified, and if the inspection is unqualified, the step (3) is repeated until the inspection is qualified.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.