Positioning device for machining of an aeroengine impeller

Abstract

This utility model discloses a machining and positioning device for an aero-engine impeller, which can perform multi-point positioning of the aero-engine impeller. It includes a base, a rocker arm, a pressure plate, a pull rod, support components, two adjusting screws, and at least one glass ball screw. The rocker arm is horizontally positioned between the left and right sides of the base. The pressure plate is positioned below the rocker arm and is used to press down the blades; its upper surface rotatably engages with the middle section of the rocker arm. The pull rod is positioned on the base on the front side of the rocker arm, and its end is provided with a hook for hooking the inner edge plate. Two sets of support components support the lower surface of the outer edge plate, the lower surface of the inner edge plate, and the flange on the inner side of the inner edge plate, respectively. The two adjusting screws are respectively positioned on the base on the front and rear sides of the rocker arm, located near the lower inclined surface of the aero-engine impeller, and are used to tighten the lower inclined surfaces of the outer and inner edge plates, respectively. The glass ball screw is positioned on the base on the rear side of the rocker arm and is used to tighten the outer edge plate.

Description

Technical Field

[0001] This utility model belongs to the field of precision machining technology of grinding machines, and specifically refers to a machining positioning device for an aero-engine impeller. Background Technology

[0002] refer to Figure 1 As shown, an aero-engine impeller 100 to be processed includes an outer edge plate 101, an inner edge plate 102, and several blades 103 connected between the outer edge plate 101 and the inner edge plate 102. Both ends of the outer edge plate 101 and the inner edge plate 102 are provided with upper and lower inclined surfaces, respectively. The upper surface of the outer edge plate 101 is provided with a groove 104, and the inner surface of the inner edge plate 102 is provided with a protruding flange 105. During the processing of the aero-engine impeller 100, at least one location on its surface needs to be processed and ground using a grinding machine, such as the edges of the groove 104 and the flange 105, requiring extremely high precision.

[0003] Clearly, the impeller 100 is an irregularly shaped part. Traditional positioning fixtures can only clamp it in the up-down or left-right directions, and cannot achieve precise positioning. When multiple parts need to be machined and polished, some unsupported or insufficiently supported parts may wobble due to force, affecting the polishing accuracy. Utility Model Content

[0004] The main purpose of this utility model is to provide a machining and positioning device for aero-engine impellers, which solves the problems existing in the prior art, can perform multi-point positioning of aero-engine impellers, and improve the quality of machining and grinding.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A machining positioning device for an aero-engine impeller, used to fix the aero-engine impeller during machining and grinding, includes an outer edge plate, an inner edge plate, and a plurality of blades connected between the outer edge plate and the inner edge plate. Both ends of the outer edge plate and the inner edge plate are provided with an upper inclined surface and a lower inclined surface. The machining positioning device includes a base, a rocker arm, a pressure plate, a pull rod, a support assembly, two adjusting screws, and at least one glass ball screw. The rocker arm is laterally disposed between the left and right sides of the base. The pressure plate is disposed below the rocker arm and is used to press down the blades; its upper surface is rotatably engaged with the middle section of the rocker arm. The pull rod is disposed on the base in front of the rocker arm, and its end is provided with... The device is equipped with a hook for hooking the inner edge plate; the support assembly consists of two sets, respectively disposed on the bases on the front and rear sides of the swing arm, including a first support member, a second support member, and a third support member for supporting the lower surface of the outer edge plate, a fourth support member and a fifth support member for supporting the lower surface of the inner edge plate, and a sixth support member for supporting the flange on the inner side of the inner edge plate; two adjusting screws are respectively disposed on the bases on the front and rear sides of the swing arm, located on the side near the lower inclined surface of the aero-engine impeller, for respectively tightening the lower inclined surfaces of the outer edge plate and the inner edge plate; the glass ball screw is disposed on the base on the rear side of the swing arm for tightening the outer edge plate.

[0007] The base has a fixing block and a connecting block on its left and right sides, respectively; one end of the swing rod is rotatably engaged with the fixing block, and the other end is detachably connected to the connecting block.

[0008] The middle section of the swing arm is provided with a movable hole, and the upper surface of the pressure plate is provided with a pivot block, which is rotatably fitted into the movable hole.

[0009] The first, second, third, fourth, fifth, and sixth support members are all spring plungers.

[0010] The base is provided with a first mounting block, and the pull rod is movably inserted through the first mounting block, with a nut threadedly fitted onto the end of the pull rod facing away from the swing rod.

[0011] The base is provided with two second mounting blocks through which two adjusting screws pass by respectively.

[0012] A third mounting block is provided on the base, and the glass ball screw is mounted on the third mounting block.

[0013] The base is provided with a plurality of fourth mounting blocks, and the upper surface of the fourth mounting blocks is fitted with rollers for rolling support of the lower edge of the blade.

[0014] After adopting the above technical solution, the present invention has the following technical effects:

[0015] This invention, through various components mounted on the base, allows for comprehensive positioning operations such as pressing, supporting, tightening, and holding different parts of the aero-engine impeller, achieving multi-point positioning. This facilitates accurate positioning of the aero-engine impeller under the grinding wheel of the grinding machine, thereby improving the quality of machining and grinding. The glass ball screws provide friction, and when used in conjunction with the tie rod, further prevent the aero-engine impeller from wobbling after positioning. Attached Figure Description

[0016] Figure 1 This is a 3D view of an aircraft engine impeller.

[0017] Figure 2 Three-dimensional representation of a specific embodiment of this utility model Figure 1 .

[0018] Figure 3 Three-dimensional representation of a specific embodiment of this utility model Figure 2 .

[0019] Figure 4 This is a schematic diagram illustrating the use of a specific embodiment of the present utility model. Figure 1 .

[0020] Figure 5 This is a schematic diagram illustrating the use of a specific embodiment of the present utility model. Figure 2 .

[0021] Explanation of icon numbers:

[0022] 1-Base; 11-Fixing block; 12-Connecting block; 13-First mounting block; 14, 14'-Second mounting block; 15-Third mounting block; 16-Fourth mounting block; 2-Swing rod; 21-Modible hole; 3-Pressure plate; 31-Pivot block; 4-Pull rod; 41-Hook; 5-Support assembly; 51-First support member; 52-Second support member; 53-Third support member; 54-Fourth support member; 55-Fifth support member; 56-Sixth support member; 6, 6'-Adjusting screw; 7-Ball screw; 8-Nut; 9-Roller; 100-Aircraft engine impeller; 101-Outer edge plate; 102-Inner edge plate; 103-Blade; 104-Groove; 105-Flange. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] refer to Figures 2 to 5As shown, this utility model discloses a machining positioning device for an aero-engine impeller, used to fix the aero-engine impeller 100 during machining and grinding. It includes an outer edge plate 101, an inner edge plate 102, and a plurality of blades 103 connected between the outer edge plate 101 and the inner edge plate 102. Both ends of the outer edge plate 101 and the inner edge plate 102 are provided with an upper inclined surface and a lower inclined surface. The machining positioning device includes a base 1, a swing rod 2, a pressure plate 3, a pull rod 4, a support assembly 5, two adjusting screws 6 and 6', and at least one glass ball screw 7.

[0025] The swing arm 2 is horizontally positioned between the left and right sides of the base 1;

[0026] The pressure plate 3 is located below the swing arm 2 and is used to press down the blade 103. Its upper surface is rotatably engaged with the middle section of the swing arm 2.

[0027] The pull rod 4 is mounted on the base 1 on the front side of the swing rod 2, and its end is provided with a hook 41 for hooking the inner edge plate 102;

[0028] The support components 5 are in two sets, respectively set on the base 1 on the front and rear sides of the swing arm 2. They include a first support member 51, a second support member 52 and a third support member 53 for supporting the lower surface of the outer edge plate 101, a fourth support member 54 and a fifth support member 55 for supporting the lower surface of the inner edge plate 102, and a sixth support member 56 for supporting the flange 105 on the inner side of the inner edge plate 102.

[0029] Two adjusting screws 6 and 6' are respectively set on the base 1 on the front and rear sides of the swing arm 2, and are located on the side of the lower inclined surface near the aircraft engine impeller 100, and are used to press against the lower inclined surfaces of the outer edge plate 101 and the inner edge plate 102 respectively.

[0030] The glass ball screw 7 is set on the base 1 on the rear side of the rocker arm 2 and is used to tighten the outer edge plate 101.

[0031] Based on the above solutions, refer to Figure 4 , Figure 5 As shown, this utility model, through various components mounted on the base 1, can perform various positioning operations such as pressing, supporting, tightening, and holding different parts of the aero-engine impeller 100, achieving multi-point positioning. This facilitates accurate positioning of the aero-engine impeller 100 under the grinding wheel of the grinding machine, thereby improving the quality of processing and grinding. The glass ball screw 7 provides friction, and when combined with the pull rod 4, it further prevents the aero-engine impeller 100 from shaking after positioning.

[0032] The following are specific embodiments of the present invention.

[0033] The base 1 is provided with a fixing block 11 and a connecting block 12 on its left and right sides, respectively. One end of the swing arm 2 is rotatably engaged with the fixing block 11, and the other end is detachably connected to the connecting block 12. Thus, the swing arm 2 can be opened upward to facilitate the placement of the aircraft engine impeller 100 onto the processing positioning device. The detachable connection between the swing arm 2 and the connecting block 12 can be a snap-fit ​​connection, a pin lock, or the like.

[0034] The middle section of the aforementioned swing rod 2 is provided with a movable hole 21, and the upper surface of the pressure plate 3 is provided with a pivot block 31. The pivot block 31 is rotatably fitted in the movable hole 21 to realize the swing of the pressure plate 3 relative to the swing rod, ensuring that each blade 103 can be pressed down.

[0035] The first support member 51, the second support member 52, the third support member 53, the fourth support member 54, the fifth support member 55 and the sixth support member 56 mentioned above are all spring plungers, which can not only support the aero-engine impeller 100, but also achieve a certain degree of buffering to avoid stress damage to the structure of the aero-engine impeller 100. They also have the characteristics of simple structure, convenient installation and high reliability.

[0036] The base 1 is provided with a first mounting block 13, and the pull rod 4 is movably inserted through the first mounting block 13. The end of the pull rod facing away from the swing rod 2 is threadedly fitted with a nut 8. Thus, by tightening the nut 8, the distance between the hook 41 and the first mounting block 13 can be continuously shortened, thereby tightening the inner edge plate 102.

[0037] The base 1 is provided with two second mounting blocks 14 and 14' through which two adjusting screws 6 and 6' are threadedly connected.

[0038] A third mounting block 15 is provided on the base 1, and a glass ball screw 7 is installed on the third mounting block 15.

[0039] The base 1 is provided with a plurality of fourth mounting blocks 16, and the upper surface of the fourth mounting blocks 16 is rolled with rollers 9 for rolling support of the lower edge of the blades 103.

[0040] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A machining positioning device for an aero-engine impeller, used to fix the aero-engine impeller during machining and grinding, comprising an outer edge plate, an inner edge plate, and a plurality of blades connected between the outer edge plate and the inner edge plate, wherein both ends of the outer edge plate and the inner edge plate are provided with an upper inclined surface and a lower inclined surface; characterized in that: The processing positioning device includes a base, a swing arm, a pressure plate, a pull rod, a support assembly, two adjusting screws, and at least one glass bead screw; The swing arm is horizontally positioned between the left and right sides of the base; The pressure plate is located below the swing arm and is used to press down the blade. Its upper surface is rotatably engaged with the middle section of the swing arm. The pull rod is mounted on the base on the front side of the swing arm, and its end is provided with a hook for hooking the inner edge plate; The support components are in two groups, respectively disposed on the bases on the front and rear sides of the swing arm. They include a first support, a second support, and a third support for supporting the lower surface of the outer edge plate, a fourth support and a fifth support for supporting the lower surface of the inner edge plate, and a sixth support for supporting the flange on the inner side of the inner edge plate. Two adjusting screws are respectively set on the base on the front and rear sides of the swing arm, and located on the lower inclined surface near the impeller of the aircraft engine, and are used to press against the lower inclined surface of the outer edge plate and the inner edge plate respectively; The glass bead screw is mounted on the base on the rear side of the rocker arm and is used to press against the outer edge plate.

2. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The base has a fixing block and a connecting block on its left and right sides, respectively; one end of the swing rod is rotatably engaged with the fixing block, and the other end is detachably connected to the connecting block.

3. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The middle section of the swing arm is provided with a movable hole, and the upper surface of the pressure plate is provided with a pivot block, which is rotatably fitted into the movable hole.

4. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The first, second, third, fourth, fifth, and sixth support members are all spring plungers.

5. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The base is provided with a first mounting block, and the pull rod is movably inserted through the first mounting block, with a nut threadedly fitted onto the end of the pull rod facing away from the swing rod.

6. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The base is provided with two second mounting blocks through which two adjusting screws pass by respectively.

7. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: A third mounting block is provided on the base, and the glass ball screw is mounted on the third mounting block.

8. The machining and positioning device for an aero-engine impeller as described in claim 1, characterized in that: The base is provided with a plurality of fourth mounting blocks, and the upper surface of the fourth mounting blocks is fitted with rollers for rolling support of the lower edge of the blade.

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