Aero-engine part machining maintenance fixing clamp

Abstract

The utility model discloses an aero-engine part machining maintenance stationary fixture which comprises a foundation plate, a supporting bolt assembly, a pressing plate and a fixing bolt assembly, a boss is coaxially arranged on the foundation plate in a protruding mode, a plurality of first grooves are formed in the boss in a surrounding mode, and a plurality of second grooves are formed in the boss. The supporting bolt assembly is rotatably arranged in the first groove, fixing grooves matched with the fixing bolt assembly are formed in the two opposite sides of the first groove respectively, one end of the pressing plate is fixed to the supporting bolt assembly, a second groove is formed in the upper surface of the other end of the pressing plate in a penetrating mode, and the fixing bolt assembly is arranged in the second groove. The device overcomes the defect that in the prior art, a device can only fix workpieces of one type and cannot be adjusted to be suitable for workpieces of other types, and the application range of the device is small. Therefore, the fixing clamp for machining and maintenance of the aero-engine parts can be adjusted to be suitable for more workpieces.

Description

Technical Field

[0001] The utility model relates to the field of turning fixtures for aviation parts, and specifically, to a machining and maintenance fixing fixture for aviation engine parts. Background Art

[0002] When turning aviation parts, it is generally necessary to fix the aviation parts through a fixture, then connect the fixture to the lathe platform for turning, and after completion, unload the fixture and the aviation parts together. However, due to the complex structure and irregular shape of aviation parts, the operation of fixing them with traditional fixtures is rather cumbersome, and the stability of clamping the parts is poor, which easily leads to errors or even scrapping of aviation parts during the machining process.

[0003] Chinese Patent No. CN108620916B discloses a turning fixture for aviation parts. When clamping this device, place the small - end - down aviation part on the support plate, then install the pressure plate. By tightening the first locking screw, the flange at the small end of the aviation part is clamped within the clamping space. After completion, install the template, and by tightening the second locking screw, the eaves of the template are pressed against the large - end face of the aviation part, and the inner wall of the large end is supported by the conical surface section of the template to prevent deformation of the aviation part during machining of the outer shape. After clamping, the fixture can be installed on the lathe platform for turning. In addition, the positioning and installation of the support plate and the template are particularly important for the clamping stability of the fixture, so the first positioning pin and the second positioning pin are provided to improve the accuracy of installing the support plate and the template.

[0004] The applicant found the following technical problems when implementing the above - mentioned technical solution:

[0005] This device can only fix one type of workpiece and cannot be adjusted to apply to other types of workpieces, resulting in a small application range.

[0006] Therefore, it is an urgent problem to be solved by the utility model to provide a machining and maintenance fixing fixture for aviation engine parts that can be adjusted to apply to more workpieces. Summary of the Utility Model

[0007] Aiming at the above - mentioned technical problems, the purpose of the utility model is to overcome the defect in the prior art that this device can only fix one type of workpiece and cannot be adjusted to apply to other types of workpieces, resulting in a small application range. Thus, a machining and maintenance fixing fixture for aviation engine parts that can be adjusted to apply to more workpieces is provided.

[0008] To achieve the above object, the present utility model provides a machining and maintenance fixing fixture for an aero-engine part. The fixing fixture includes: a base plate, a support bolt assembly, a pressing plate, and a fixing bolt assembly. A boss is coaxially protruded on the base plate, and a plurality of first grooves are circumferentially arranged on the boss. The support bolt assembly is rotatably arranged in the first groove, and fixing grooves adapted to the fixing bolt assembly are respectively arranged on opposite sides of the first groove. One end of the pressing plate is fixed on the support bolt assembly, and a second groove is penetrated through the upper surface of the other end thereof. The fixing bolt assembly is arranged in the second groove.

[0009] Preferably, the first groove and the second groove are respectively arranged as strip-shaped grooves, and the support bolt assembly and the fixing bolt assembly are respectively arranged in the corresponding strip-shaped grooves so as to be reciprocally movable towards the axis direction of the boss.

[0010] Preferably, the support bolt assembly includes: a support bolt body and a hexagon thin nut. The support bolt body is vertically arranged in the first groove, and a hexagon thin nut is threadedly assembled on the part of the support bolt body protruding out of the first groove.

[0011] Preferably, a clamping block is arranged at the lower end of the support bolt body, and a clamping groove adapted to the clamping block is recessed in the first groove.

[0012] Preferably, the clamping block is a clamping bearing.

[0013] Preferably, a cushion block is arranged on the lower side wall of the end of the pressing plate far from the support bolt assembly.

[0014] Preferably, the cushion block is detachably arranged on the pressing plate by a slotted countersunk head screw.

[0015] Preferably, the fixing bolt assembly includes: a fixing bolt body and a first washer. The fixing bolt body is vertically arranged in the second groove, and a first washer is coaxially arranged between the nut of the fixing bolt body and the upper side wall of the pressing plate.

[0016] Preferably, a second washer and an elastic member are further sleeved on the fixing bolt body. The upper side wall of the second washer abuts against the lower side wall of the pressing plate, and the upper end of the elastic member abuts against or is fixedly connected to the lower side wall of the second washer, and the lower end abuts against or is fixedly connected to the inner side wall of the fixing groove.

[0017] Preferably, a hollow groove is coaxially penetrated through the base plate.

[0018] According to the above technical solution, the beneficial effects of the present utility model compared with the prior art are as follows: This application can fix at least two types of workpieces, namely the first workpiece and the second workpiece; by coaxially arranging the first workpiece on the base plate, then rotating the support bolt assembly to drive the pressing plate to rotate above the edge of the first workpiece, and then tightening the fixing bolt assembly, the fixation of the first workpiece is achieved; by coaxially arranging the second workpiece on the convex platform, then rotating the support bolt assembly to drive the pressing plate to rotate above the edge of the second workpiece, and then tightening the fixing bolt assembly, the fixation of the second workpiece is achieved; thus, the fixation of at least two types of workpieces, namely the first workpiece and the second workpiece, is realized.

[0019] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part; moreover, the parts not involved in the present utility model are the same as the prior art or can be implemented by using the prior art. Brief Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 is a three-dimensional view of the machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 1 .

[0022] Figure 2 is a three-dimensional view of the machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 2 .

[0023] Figure 3 is a three-dimensional view of the machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 3 .

[0024] Figure 4 is a plane cross-sectional view of the machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model.

[0025] Figure 5 is a partial plan view of the machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model.

[0026] Description of reference numerals: 1 - base plate; 101 - boss; 10101 - first groove; 10102 - fixing groove; 10103 - clamping groove; 102 - hollow groove; 2 - support bolt assembly; 201 - support bolt body; 202 - hexagon thin nut; 203 - clamping block; 3 - pressing plate; 301 - second groove; 302 - cushion block; 303 - slotted countersunk head screw; 4 - fixing bolt assembly; 401 - fixing bolt body; 402 - first washer; 403 - second washer; 404 - elastic member; 5 - first workpiece; 6 - second workpiece. Detailed implementation manners

[0027] The following further elaborates on the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance. In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] To further understand the features, technical means, and the specific purposes and functions achieved by the present utility model, the following further describes the present utility model in detail in conjunction with the accompanying drawings and specific implementation manners.

[0031] Refer toFigures 1 - 4 : A machining and repair fixture for an aero-engine part, the fixture comprising: a base plate 1, a support bolt assembly 2, a pressing plate 3 and a fixing bolt assembly 4. A boss 101 protrudes coaxially on the base plate 1, and a plurality of first grooves 10101 are arranged around the boss 101. The support bolt assembly 2 is rotatably arranged in the first grooves 10101. Fixing grooves 10102 adapted to the fixing bolt assembly 4 are respectively arranged on opposite sides of the first grooves 10101. One end of the pressing plate 3 is fixed to the support bolt assembly 2, and a second groove 301 penetrates through the upper surface of the other end thereof. The fixing bolt assembly 4 is arranged in the second groove 301.

[0032] This application can fix at least two types of workpieces, namely a first workpiece 5 and a second workpiece 6. By coaxially arranging the first workpiece 5 on the base plate 1, then rotating the support bolt assembly 2 to drive the pressing plate 3 to rotate above the edge of the first workpiece 5, and then tightening the fixing bolt assembly 4, the fixing of the first workpiece 5 is achieved. By coaxially arranging the second workpiece 6 on the boss 101, then rotating the support bolt assembly 2 to drive the pressing plate 3 to rotate above the edge of the second workpiece 6, and then tightening the fixing bolt assembly 4, the fixing of the second workpiece 6 is achieved. Thus, the fixing of at least two types of workpieces, namely the first workpiece 5 and the second workpiece 6, is realized.

[0033] Refer to Figure 3 and Figure 4 : The first grooves 10101 and the second groove 301 are respectively arranged as strip-shaped grooves, and the support bolt assembly 2 and the fixing bolt assembly 4 are respectively arranged in the corresponding strip-shaped grooves so as to be reciprocally movable in the direction towards the axis of the boss 101.

[0034] This design of this application can adjust the area where the pressing plate 3 presses on the workpiece according to needs, so as to be adjusted according to the area size of the edges of different workpieces to adapt to the fixing of more types of workpieces.

[0035] Refer to Figure 4 and Figure 5 : The support bolt assembly 2 includes: a support bolt body 201 and a hexagon thin nut 202. The support bolt body 201 is vertically arranged in the first grooves 10101, and a hexagon thin nut 202 is threadedly assembled on the part of the support bolt body 201 protruding from the first grooves 10101.

[0036] This application can adjust the height of the pressing plate 3 by setting the hexagon thin nut 202, so as to be adjusted according to the thickness of the edges of different workpieces to adapt to the fixing of more types of workpieces.

[0037] Refer to Figure 4 and Figure 5: A clamping block 203 is provided at the lower end of the support bolt body 201, and a clamping groove 10103 adapted to the clamping block 203 is recessed in the first groove 10101.

[0038] In this application, through the cooperation of the clamping block 203 and the clamping groove 10103, the support bolt body 201 is prevented from falling off, thereby improving the stability of the fixing fixture.

[0039] Refer to Figure 4 and Figure 5 : The clamping block 203 is a clamping bearing.

[0040] In this application, through the design of the clamping bearing, the sliding friction is converted into rotational friction, thereby extending the service life of the fixing fixture.

[0041] Refer to Figure 3 : A cushion block 302 is provided on the lower side wall of one end of the pressing plate 3 away from the support bolt assembly 2.

[0042] In this application, by providing the cushion block 302 on the lower side wall of the pressing plate 3, the friction with the workpiece surface is increased to prevent it from sliding. At the same time, it can also prevent the workpiece from being damaged due to the over-tightening of the fixing bolt assembly 4.

[0043] Refer to Figure 3 : The cushion block 302 is detachably provided on the pressing plate 3 through a slotted countersunk head screw 303.

[0044] This design in this application facilitates the repair and replacement of the cushion block 302.

[0045] Refer to Figure 5 : The fixing bolt assembly 4 includes: a fixing bolt body 401 and a first washer 402. The fixing bolt body 401 is vertically arranged in the second groove 301, and a first washer 402 is coaxially arranged between its nut and the upper side wall of the pressing plate 3.

[0046] In this application, by providing the first washer 402, it is prevented that the fixing bolt body 401 is tightened too tightly and damages the upper surface of the pressing plate 3.

[0047] Refer to Figure 5 : A second washer 403 and an elastic member 404 are also sleeved on the fixing bolt body 401. The upper side wall of the second washer 403 abuts against the lower side wall of the pressing plate 3. The upper end of the elastic member 404 abuts against or is fixedly connected to the lower side wall of the second washer 403, and the lower end abuts against or is fixedly connected to the inner side wall of the fixing groove 10102.

[0048] In this application, by providing the elastic member 404, it is prevented that the fixing bolt body 401 is tightened too tightly and damages the workpiece and the pressing plate 3.

[0049] Refer to Figures 2 - 4: A hollow groove 102 is coaxially and penetratingly provided in the base plate 1.

[0050] This application provides the hollow groove 102 so that when processing a workpiece of the type of the second workpiece 6, debris will directly fall from the hollow groove 102.

[0051] When the device provided by the present utility model is in use, it can fix at least two types of workpieces, namely the first workpiece 5 and the second workpiece 6; by coaxially arranging the first workpiece 5 on the base plate 1, then rotating the support bolt assembly 2 to drive the pressing plate 3 to rotate above the edge of the first workpiece 5, and then tightening the fixing bolt assembly 4, thereby realizing the fixation of the first workpiece 5; by coaxially arranging the second workpiece 6 on the boss 101, then rotating the support bolt assembly 2 to drive the pressing plate 3 to rotate above the edge of the second workpiece 6, and then tightening the fixing bolt assembly 4, thereby realizing the fixation of the second workpiece 6; and further realizing the fixation of at least two types of workpieces, namely the first workpiece 5 and the second workpiece 6.

[0052] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.

[0053] In addition, it should be noted that for each of the specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.

[0054] In addition, any combination can be made between various different embodiments of the present utility model as long as it does not violate the idea of the present utility model, and it should also be regarded as the content disclosed by the present utility model.

Claims

1. A fixture for machining and repairing aircraft engine parts, characterized in that: The fixing fixture comprises: a base plate (1), a supporting bolt assembly (2), a pressure plate (3) and a fixing bolt assembly (4); a boss (101) is coaxially protruded on the base plate (1); a plurality of first grooves (10101) are arranged around the boss (101); the supporting bolt assembly (2) is rotatably arranged in the first groove (10101); fixing grooves (10102) matching the fixing bolt assembly (4) are respectively arranged on opposite sides of the first groove (10101); one end of the pressure plate (3) is fixed on the supporting bolt assembly (2), and a second groove (301) is arranged on the upper surface of the other end; the fixing bolt assembly (4) is arranged in the second groove (301).

2. The aircraft engine parts machining repair fixture according to claim 1, characterized in that: The first groove (10101) and the second groove (301) are respectively arranged as strip grooves, and the supporting bolt assembly (2) and the fixing bolt assembly (4) are respectively arranged in the corresponding strip grooves so as to be reciprocatingly movable toward the axial direction of the boss (101).

3. The aircraft engine parts machining repair fixture according to claim 2, characterized in that: The support bolt assembly (2) comprises: a support bolt body (201) and a hexagonal thin nut (202); the support bolt body (201) is vertically arranged in the first groove (10101), and the part thereof extending out of the first groove (10101) is threadedly assembled with the hexagonal thin nut (202).

4. The aircraft engine parts machining repair fixture according to claim 3, characterized in that: A clamping block (203) is provided at the lower end of the supporting bolt body (201), and a clamping groove (10103) adapted to the clamping block (203) is recessed in the first groove (10101).

5. The aircraft engine parts machining repair fixture according to claim 4, characterized in that: The clamping block (203) is a clamping bearing.

6. The aircraft engine parts machining repair fixture according to claim 1, characterized in that: A cushion block (302) is provided on the lower side wall of one end of the pressure plate (3) away from the support bolt assembly (2).

7. The aircraft engine parts machining repair fixture according to claim 6, characterized in that: The cushion block (302) is detachably arranged on the pressure plate (3) by means of a slotted countersunk screw (303).

8. The aircraft engine parts machining repair fixture according to claim 2, characterized in that: The fixing bolt assembly (4) comprises: a fixing bolt body (401) and a first washer (402); the fixing bolt body (401) is vertically arranged in the second groove (301), and the first washer (402) is coaxially arranged between the nut and the upper side wall of the pressure plate (3).

9. The aircraft engine parts machining repair fixture according to claim 8, characterized in that: The fixing bolt body (401) is also sleeved with a second washer (403) and an elastic member (404); the upper side wall of the second washer (403) abuts against the lower side wall of the pressure plate (3); the upper end of the elastic member (404) abuts against or is fixedly connected to the lower side wall of the second washer (403); and the lower end abuts against or is fixedly connected to the inner side wall of the fixing groove (10102).

10. The aircraft engine parts machining repair fixture according to claim 1, characterized in that: The base plate (1) is coaxially provided with a hollow groove (102) penetrating therethrough.

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