Universal machining maintenance fixing clamp for aero-engine parts

Abstract

The utility model discloses a general type machining maintenance stationary fixture for aero-engine parts, the stationary fixture comprises a base plate, a supporting bolt assembly, a pressing plate, a fixing bolt assembly and an elastic fixing assembly, the two opposite sides of the base plate are respectively and coaxially provided with a boss in a protruding mode, the boss is provided with a plurality of first grooves in a surrounding mode, and the elastic fixing assembly is arranged in the first grooves. The supporting bolt assembly is 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 defects that the 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 universal machining maintenance fixing clamp for 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 general-purpose machining and maintenance fixture for aviation engine parts. Background Art

[0002] When turning aviation parts, it is generally necessary to fix the aviation parts with a fixture, then connect the fixture to the lathe platform for turning, and after completion, remove 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 relatively cumbersome, and the stability of clamping the parts is poor, which easily leads to errors or even scrapping of aviation parts during the processing.

[0003] Chinese Patent No. CN108620916B discloses a turning fixture for aviation parts. When clamping this device, place the small-end-down of the aviation part on the support plate, then install the pressure plate, and by tightening the first locking screw, the flange at the small end of the aviation part is clamped in the clamping space. After completion, install the template, and by tightening the second locking screw, the protruding edge of the template is pressed against the large-end 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 the aviation part from deforming during the processing 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 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 general-purpose machining and maintenance fixture for aviation engine parts that can be adjusted to apply to more workpieces. Summary of the Utility Model

[0007] Aiming at the above technical problems, the purpose of the utility model is to overcome the problem 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 general-purpose machining and maintenance fixture for aviation engine parts that can be adjusted to apply to more workpieces is provided.

[0008] To achieve the above object, the utility model provides a general-purpose machining and maintenance fixture for aero-engine parts. The fixture includes: a base plate, a support bolt assembly, a pressing plate, a fixing bolt assembly, and an elastic fixing assembly. Convex platforms are coaxially protruded on both opposite sides of the base plate, and a plurality of first grooves are arranged around the convex platforms. The support bolt assembly is arranged in the first grooves. Fixing grooves adapted to the fixing bolt assembly are respectively arranged on both opposite sides of the first grooves. One end of the pressing plate is fixed on the support bolt assembly, and a second groove is vertically penetrated through the upper surface of the other end thereof. The fixing bolt assembly is arranged in the second groove. A hollow groove is coaxially penetrated through the base plate, and an elastic fixing assembly capable of reciprocatingly moving towards the axis direction of the base plate to fix the workpiece is arranged on the inner side wall of the hollow groove.

[0009] Preferably, the elastic fixing assembly includes: an annular first elastic member and a clamping block. An annular groove is arranged around the inner side wall of the hollow groove of the base plate. A guiding groove is arranged in communication between the inner side wall of the hollow groove and the annular groove. The clamping block is arranged to be capable of reciprocatingly moving towards the axis direction of the hollow groove. An annular first elastic member is coaxially arranged in the annular groove, and the inner side wall of the annular first elastic member abuts against the inner side wall of the clamping block.

[0010] Preferably, an anti-detachment block for preventing the clamping block from detaching from the guiding groove is further arranged on the inner side of the clamping block, and the inner side wall of the anti-detachment block is in an arc shape adapted to the annular first elastic member.

[0011] Preferably, a flexible first cushion block is further arranged on the outer side of the clamping block.

[0012] Preferably, the first groove and the second groove are respectively arranged as strip-shaped grooves. The support bolt assembly is rotatably arranged in the first groove, and the support bolt assembly and the fixing bolt assembly are respectively arranged to be capable of reciprocatingly moving towards the axis direction of the convex platform in the corresponding strip-shaped grooves.

[0013] Preferably, the support bolt assembly includes: a support bolt body and a hexagonal thin nut. The support bolt body is vertically arranged in the first groove, and the hexagonal thin nut is threadedly assembled on the part of the support bolt body extending out of the first groove.

[0014] Preferably, a second cushion block is arranged on the lower side wall of the end of the pressing plate far from the support bolt assembly, and the second cushion block is detachably arranged on the pressing plate.

[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 a second 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. The upper end of the second 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] According to the above technical solution, the beneficial effects of the present utility model compared with the prior art are as follows: The fixing fixture of the present application can fix at least the third workpiece and the second workpiece, two types of workpieces; By coaxially inserting the third workpiece into the hollow groove, at this time, the elastic fixing component will be squeezed by the third workpiece, thereby clamping the third workpiece, and then by tightening the fixing bolt component, the fixing of the third workpiece is realized; By coaxially arranging the second workpiece on the convex platform and then tightening the fixing bolt component, the fixing of the second workpiece is realized; Furthermore, the fixing of at least two types of workpieces, namely the third workpiece and the second workpiece, is realized.

[0018] 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 or can adopt the prior art. Brief Description of the Drawings

[0019] 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:

[0020] Figure 1 is a three-dimensional view of a general-purpose machining and maintenance fixing fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 1 .

[0021] Figure 2 is a three-dimensional view of a general-purpose machining and maintenance fixing fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 2 .

[0022] Figure 3 is a three-dimensional view of a general-purpose machining and maintenance fixing fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 3 .

[0023] Figure 4 is a three-dimensional view of a general-purpose machining and maintenance fixing fixture for aero-engine parts provided in a preferred embodiment of the present utility model Figure 4 .

[0024] Figure 5 is a plan sectional view of a general-purpose machining and maintenance fixing fixture for aero-engine parts provided in a preferred embodiment of the present utility model.

[0025] Figure 6 It is a partial plan view of a general-purpose machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model.

[0026] Figure 7 It is a partial three-dimensional Figure 1 .

[0027] Figure 8 It is a partial three-dimensional of a general-purpose machining and maintenance fixture for aero-engine parts provided in a preferred embodiment of the present utility model. Figure 2 .

[0028] Explanation of reference numerals: 1 - base plate; 101 - boss; 10101 - first groove; 10102 - fixing groove; 102 - hollow groove; 103 - annular groove; 104 - guiding groove; 2 - supporting bolt assembly; 201 - supporting bolt body; 202 - hexagon thin nut; 3 - pressing plate; 301 - second groove; 302 - second cushion block; 303 - countersunk head screw for clamping groove; 4 - fixing bolt assembly; 401 - fixing bolt body; 402 - first washer; 403 - annular second elastic member; 404 - second washer; 5 - elastic fixing assembly; 501 - first elastic member; 502 - clamping block; 50201 - anti - detachment block; 50202 - flexible first cushion block; 6 - first workpiece; 7 - second workpiece; 8 - third workpiece. Detailed implementation manners

[0029] The following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0030] 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 drawings, or the orientation or positional relationship in which the utility model product 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal", "vertical", "hanging", etc. do 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.

[0031] 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 situations.

[0032] To further understand the features, technical means, specific purposes, and functions achieved by the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0033] Refer to Figures 1 - 4 : A general-purpose machining and maintenance fixture for an aero-engine part. The fixture includes: a base plate 1, a support bolt assembly 2, a pressing plate 3, a fixing bolt assembly 4, and an elastic fixing assembly 5. On opposite sides of the base plate 1, there are coaxially protruding bosses 101. A plurality of first grooves 10101 are provided around the bosses 101. The support bolt assembly 2 is arranged in the first grooves 10101. Fixing grooves 10102 adapted to the fixing bolt assembly 4 are provided 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 is provided through the upper surface of the other end. The fixing bolt assembly 4 is arranged in the second groove 301. A hollow groove 102 is coaxially provided through the base plate 1. An elastic fixing assembly 5 capable of reciprocatingly moving towards the axis direction of the base plate 1 to fix the workpiece is provided on the inner side wall of the hollow groove 102.

[0034] The fixing fixture of the present application can fix at least the third workpiece 8 and the second workpiece 7, two types of workpieces; by coaxially inserting the third workpiece 8 into the hollow groove 102, at this time, the elastic fixing component 5 will be extruded by the third workpiece 8, so as to clamp the third workpiece 8, and then by tightening the fixing bolt component 4, the fixing of the third workpiece 8 is realized; by coaxially arranging the second workpiece 7 on the boss 101 and then tightening the fixing bolt component 4, the fixing of the second workpiece 7 is realized; thus, the fixing of at least two types of workpieces, namely the third workpiece 8 and the second workpiece 7, is realized.

[0035] Refer to Figure 5 and Figure 7 : The elastic fixing component 5 includes: an annular first elastic member 501 and a clamping block 502. The base plate 1 is provided with an annular groove 103 around the inner side wall of the hollow groove 102. The inner side wall of the hollow groove 102 and the annular groove 103 are communicated with a guiding groove 104. The clamping block 502 is arranged so as to be reciprocally movable towards the axis direction of the hollow groove 102. An annular first elastic member 501 is coaxially arranged in the annular groove 103. The inner side wall of the annular first elastic member 501 abuts against the inner side wall of the clamping block 502.

[0036] In the present application, by coaxially inserting the third workpiece 8 into the hollow groove 102, at this time, the third workpiece 8 will extrude the clamping block 502, so as to drive the first elastic member 501 to compress inwards. The side wall of the third workpiece 8 will also receive the force of the first elastic member 501 stretching outwards, so as to clamp the third workpiece 8 through the clamping block 502.

[0037] Refer to Figure 7 and Figure 8 : A anti - detachment block 50201 for preventing the clamping block 502 from detaching from the guiding groove 104 is further arranged on the inner side of the clamping block 502. The inner side wall of the anti - detachment block 50201 is in an arc shape adapted to the annular first elastic member 501.

[0038] Through this design in the present application, it is convenient for the annular first elastic member 501 to fit with the clamping block 502, so as to ensure the clamping force of the clamping block 502, and it can also prevent the clamping block 502 from being ejected from the guiding groove 104 by the elastic member.

[0039] Refer to Figure 8 : A flexible first cushion block 50202 is further arranged on the outer side of the clamping block 502.

[0040] By arranging the flexible first cushion block 50202 in the present application, it can prevent the third workpiece 8 from being damaged, and at the same time, it can also increase the friction force with the third workpiece 8 to prevent it from falling off.

[0041] Refer to Figure 3: The first groove 10101 and the second groove 301 are respectively arranged as strip grooves. The support bolt assembly 2 is rotatably arranged in the first groove 10101, and the support bolt assembly 2 and the fixing bolt assembly 4 are respectively arranged in the corresponding strip grooves so as to be reciprocally movable in the axial direction of the boss 101.

[0042] With this design of the present application, the fixing fixture can also fix the first workpiece 6, so that three types of workpieces can be fixed, and the disassembly and assembly speeds of the first workpiece 6, the second workpiece 7 and the third workpiece 8 are also improved; the area of the pressing plate 3 pressing on the workpiece can also be adjusted as needed, so that it can be adjusted according to the area size of the edges of different workpieces to adapt to the fixation of more types of workpieces.

[0043] Refer to Figure 5 and Figure 6 : The support bolt assembly 2 includes: a support bolt body 201 and a thin hexagon nut 202. The support bolt body 201 is vertically arranged in the first groove 10101, and a thin hexagon nut 202 is threadedly assembled on the part of the support bolt body 201 extending out of the first groove 10101.

[0044] By arranging the thin hexagon nut 202 in the present application, the height of the pressing plate 3 can be adjusted, so that it can be adjusted according to the thickness of the edges of different workpieces to adapt to the fixation of more types of workpieces.

[0045] Refer to Figure 3 : A second cushion block 302 is arranged on the lower side wall of the end of the pressing plate 3 far from the support bolt assembly 2, and the second cushion block 302 is detachably arranged on the pressing plate 3.

[0046] By arranging cushion blocks on the lower side wall of the pressing plate 3 in the present application, the friction force with the surface of the workpiece is increased to prevent it from sliding, and at the same time, it can also prevent the workpiece from being damaged due to the fixing bolt assembly 4 being tightened too tightly.

[0047] Refer to Figure 5 and Figure 6 : 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 the nut of the fixing bolt body 401 and the upper side wall of the pressing plate 3.

[0048] By arranging the first washer 402 in the present application, it is prevented that the fixing bolt body 401 is tightened too tightly to damage the upper surface of the pressing plate 3.

[0049] Refer to Figure 5 and Figure 6:A second washer 404 and a second elastic member 403 are also sleeved on the fixing bolt body 401. The upper side wall of the second washer 404 abuts against the lower side wall of the pressing plate 3. The upper end of the second elastic member 403 abuts against or is fixedly connected to the lower side wall of the second washer 404, and the lower end abuts against or is fixedly connected to the inner side wall of the fixing groove 10102.

[0050] In this application, an elastic member is provided to prevent the fixing bolt body 401 from being tightened too tightly and damaging the workpiece and the pressing plate 3.

[0051] When the device provided by the present utility model is in use, the fixing fixture can fix at least the third workpiece 8 and the second workpiece 7, two types of workpieces; by coaxially inserting the third workpiece 8 into the hollow groove 102, at this time, the elastic fixing assembly 5 will be squeezed by the third workpiece 8, thereby clamping the third workpiece 8, and then by tightening the fixing bolt assembly 4, the fixing of the third workpiece 8 is realized; by coaxially arranging the second workpiece 7 on the convex platform 101 and then tightening the fixing bolt assembly 4, the fixing of the second workpiece 7 is realized; thus, the fixing of at least two types of workpieces, namely the third workpiece 8 and the second workpiece 7, is realized.

[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, among the various 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 universal machining and repair fixture for aircraft engine parts, characterized in that: The fixing fixture comprises: a base plate (1), a supporting bolt assembly (2), a pressure plate (3), a fixing bolt assembly (4) and an elastic fixing assembly (5); the base plate (1) is provided with bosses (101) coaxially protruding on opposite sides thereof; the bosses (101) are provided with a plurality of first grooves (10101) surrounding them; the supporting bolt assembly (2) is arranged in the first groove (10101); and the first groove (10101) is provided with a plurality of first grooves (10101) on opposite sides thereof. The pressure plate (3) has a fixing groove (10102) adapted to match the workpiece (4), one end of the pressure plate (3) is fixed on the supporting bolt assembly (2), and a second groove (301) is provided on the upper surface of the other end thereof, the fixing bolt assembly (4) is arranged in the second groove (301), the base plate (1) is coaxially provided with a hollow groove (102), and the inner side wall of the hollow groove (102) is provided with an elastic fixing assembly (5) capable of reciprocating toward the axial direction of the base plate (1) to fix the workpiece.

2. The universal machining and repair fixture for aircraft engine parts according to claim 1, characterized in that: The elastic fixing assembly (5) comprises: an annular first elastic member (501) and a clamping block (502); the base plate (1) is located on the inner side wall of the hollow groove (102) and is surrounded by an annular groove (103); the inner side wall of the hollow groove (102) is connected to the annular groove (103) and is provided with a guide groove (104); the clamping block (502) is provided with a clamping block (502) that can be reciprocated toward the axial direction of the hollow groove (102); the annular first elastic member (501) is coaxially arranged in the annular groove (103); the inner side wall of the annular first elastic member (501) abuts against the inner side wall of the clamping block (502).

3. The universal machining and repair fixture for aircraft engine parts according to claim 2, characterized in that: An anti-slip block (50201) is also provided on the inner side of the clamping block (502) to prevent the clamping block (502) from escaping from the guide groove (104), and the inner side wall of the anti-slip block (50201) is in an arc shape that matches the annular first elastic member (501).

4. The universal machining and repair fixture for aircraft engine parts according to claim 2, characterized in that: A flexible first cushion block (50202) is also provided on the outer side of the clamping block (502).

5. The universal machining and repair fixture for aircraft engine parts according to claim 1, characterized in that: The first groove (10101) and the second groove (301) are respectively arranged as strip grooves, the supporting bolt assembly (2) is rotatably arranged in the first groove (10101), 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).

6. The universal machining and repair fixture for aircraft engine parts according to claim 5, 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).

7. The universal machining and repair fixture for aircraft engine parts according to claim 1, characterized in that: A second cushion block (302) is provided on the lower side wall of one end of the pressing plate (3) away from the supporting bolt assembly (2), and the second cushion block (302) is detachably arranged on the pressing plate (3).

8. The universal machining and repair fixture for aircraft engine parts according to claim 5, 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 universal machining and repair fixture for aircraft engine parts according to claim 8, characterized in that: The fixing bolt body (401) is also sleeved with a second washer (404) and a second elastic member (403); the upper side wall of the second washer (404) abuts against the lower side wall of the pressure plate (3); the upper end of the second elastic member (403) abuts against or is fixedly connected to the lower side wall of the second washer (404); and the lower end abuts against or is fixedly connected to the inner side wall of the fixing groove (10102).

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