Special clamp for engine blade

Abstract

The utility model discloses a special fixture for an engine blade, which comprises a base, a rotating platform and a processing platform, and the rotating platform is rotatably arranged on the base; the machining platform is arranged on the rotating platform, the machining platform is provided with two three-axis moving clamping platforms arranged in a spaced mode and two horizontal positioning clamps arranged oppositely, the three-axis moving clamping platforms are detachably provided with replaceable clamps, and the horizontal positioning clamps and the replaceable clamps define a clamping area. When machining is carried out, the position of the clamp arranged in the clamping area can be moved in space, so that a plurality of parts, needing to be machined, on the blade can be moved and adjusted to be close to a machining tool, multi-angle machining of the blade is completed, the blade does not need to be clamped again, and the use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blade laser shock strengthening, in particular to a special clamp for engine blades. Background Art

[0002] Laser shock peening technology is a high-tech surface processing technology that uses the plasma shock wave generated by a high-energy laser beam to produce severe plastic deformation on the material surface, thereby introducing beneficial residual compressive stress in the near-surface layer and inducing microstructural evolution to effectively improve the fatigue resistance and wear resistance of the parts to be processed. Compared with traditional surface processing technology, it has the advantages of better strengthening effect and stronger controllability, and the surface roughness of the parts to be processed after laser shock peening remains basically unchanged, without the need for post-processing.

[0003] Due to the harsh working conditions, aircraft engine blades require extremely high mechanical properties. Strengthening them using laser shock peening technology can effectively improve their mechanical properties and extend fatigue life, thereby meeting their manufacturing needs. However, this technology requires processing aircraft engine blades at multiple angles. In order to improve the processing efficiency of aircraft engine blades, a special fixture for laser shock peening of aircraft engine blades is needed. Utility Model Content

[0004] The utility model aims to provide a special clamp for engine blades to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] The utility model provides a special clamp for engine blades, comprising a base, a rotating platform and a processing platform, wherein the rotating platform is rotatably arranged on the base; the processing platform is arranged on the rotating platform, the processing platform is provided with two spaced-apart three-axis movable clamping platforms and two relatively arranged horizontal positioning clamps, the three-axis movable clamping platform is detachably provided with a replaceable clamp, and the horizontal positioning clamp and the replaceable clamp are arranged to form a clamping area.

[0007] The beneficial effects of the utility model are:

[0008] During processing, the fixture located in the clamping area can be moved in space, so that multiple parts of the blade that need to be processed can be moved and adjusted to the vicinity of the processing tool, completing processing of the blade at multiple angles without re-clamping the blade, thereby improving utilization efficiency.

[0009] As a further improvement of the above technical solution, the base is provided with a slide groove, the slide groove is slidably provided with a sliding block, and the rotating platform is rotatably provided on the sliding block.

[0010] As a further improvement of the above technical solution, the base is provided with a drainage groove.

[0011] As a further improvement of the above technical solution, the three-axis mobile clamping platform includes a vertical slide rail, a fixed slide rail and a horizontal slide rail. The fixed slide rail is arranged on the processing platform, the horizontal slide rail is slidably arranged on the fixed slide rail, the vertical slide rail slides on the horizontal slide rail, and the replaceable fixture is slidably arranged on the vertical slide rail.

[0012] As a further improvement of the above technical solution, the horizontal positioning fixture includes a movable base and a clamping mechanism, the movable base is slidably disposed on the fixed slide rail, and the clamping mechanism is slidably disposed on the movable base via a connecting slider.

[0013] As a further improvement of the above technical solution, the movable base is provided with a slot, the slot is rotatably provided with a second screw rod, the second screw rod is threadedly connected with a clamping slider, the clamping slider is provided with a boss, and the clamping mechanism is slidably fixed to the boss.

[0014] As a further improvement of the above technical solution, the clamping mechanism includes an abutment rod and an abutment block provided on the abutment rod.

[0015] As a further improvement of the above technical solution, the replaceable clamp includes a sliding base, a first screw rod, two blocks and a replaceable chuck. The sliding base is provided with a groove, the first screw rod is rotatably arranged in the groove, the two blocks are respectively threadedly connected to the positive thread segment and the negative thread segment of the first screw rod, and the replaceable chuck is arranged between the two blocks.

[0016] As a further improvement of the above technical solution, the replaceable clamping head includes a clamping head, and a clamping surface of the clamping head is provided with a clamping groove.

[0017] As a further improvement of the above technical solution, a flange is connected between the rotating platform and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 The utility model provides a special clamp for engine blades, and a structural schematic diagram of an embodiment thereof, wherein six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0020] Figure 2The utility model provides a special clamp for engine blades, and a schematic diagram of a three-axis movable clamping platform structure of an embodiment thereof, wherein six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0021] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0023] Figure 5 This is a special clamp for engine blades provided by the utility model, and a clamping schematic diagram of one embodiment thereof;

[0024] Figure 6 This is a special clamp for engine blades provided by the utility model, and a clamping schematic diagram of one embodiment thereof;

[0025] Figure 7 A schematic diagram of the structure of a titanium turbine blade clamped by a clamping example of the utility model;

[0026] Figure 8 The figure is a schematic diagram of the structure of a high-pressure turbine blade of a jet engine clamped by the clamping example of the utility model.

[0027] Reference numerals:

[0028] Base 100, slide groove 110, drainage groove 120, rotating platform 200, processing platform 300, three-axis mobile clamping platform 400, vertical slide rail 410, fixed slide rail 420, horizontal slide rail 430, replaceable fixture 500, sliding base 510, groove 511, first screw rod 520, block 530, replaceable chuck 540, clamping groove 541, horizontal positioning fixture 600, movable base 610, slot 611, second screw rod 612, clamping slider 613, boss 614, clamping mechanism 620, flange 700. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0030] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Laser shock peening technology is widely used in aerospace engine blades. However, this technology requires multi-angle processing of aerospace engine blades. In order to improve the processing efficiency of aerospace engine blades, a special fixture for laser shock peening of aerospace engine blades is needed. Figures 1 to 8 The special fixture of the utility model is made into the following embodiments:

[0034] In some embodiments, the utility model is a special fixture for laser shock strengthening of aircraft engine blades, including a base 100, a rotating platform 200, and a processing platform 300.

[0035] The rotating platform 200 is rotatably arranged above the base 100; there are two processing platforms 300, and the two processing platforms 300 are respectively arranged on the rotating platform 200. The processing platform 300 is provided with two three-axis mobile clamping platforms 400 arranged in a front-to-back interval and two horizontal positioning fixtures 600 arranged in a left-right relative manner. The three-axis mobile clamping platform 400 is detachably provided with a replaceable fixture 500, and the horizontal positioning fixture 600 and the replaceable fixture 500 are surrounded by a clamping area for clamping laser shock strengthening aircraft engine blades. The utility model sets two groups of replaceable fixtures 500 on the processing platform 300, which can effectively improve the processing efficiency. Those skilled in the art set the number of replaceable fixtures 500 according to actual conditions.

[0036] During processing, the fixture located in the clamping area can be moved in space, so that multiple parts of the blade that need to be processed can be moved and adjusted to the vicinity of the processing tool, completing processing of the blade at multiple angles without re-clamping the blade, thereby improving utilization efficiency.

[0037] Specifically, the rotating platform 200 is provided with a flange 700, and the flange 700 is arranged above the rotating platform 200. Two processing platforms 300 are arranged on the upper end surface of the flange 700. The three-axis mobile clamping platform 400 is arranged above the processing platform 300. The three-axis mobile clamping platform 400 includes two vertical slide rails 410, two fixed slide rails 420 and two horizontal slide rails 430. The two fixed slide rails 420 are extended forward and backward and are arranged on the processing platform 300. The two ends of the two horizontal slide rails 430 are respectively slidably set on the two fixed slide rails 420, and the two fixed slide rails 420 are connected by a connecting frame.

[0038] The two vertical slide rails 410 slide on the horizontal slide rail 430 , and the replaceable fixture 500 is slidably disposed on the vertical slide rails 410 .

[0039] The base 100 is installed at the end of the manipulator or a processing machine. Two slide grooves 110 and a drainage groove 120 are provided on the surface of the base 100. The drainage groove 120 is arranged between the two slide grooves 110, and the sliding connection block is slidably installed in the slide groove 110 of the base 100. The rotating platform 200 is installed on the sliding connection block and connected to the sliding connection block by connecting bolts. The base 100 is provided with a plurality of positioning holes, which can be selected according to the actual installation situation. The rotating movable platform can adjust the position through the sliding connection block and adjust the processing angle through the rotating platform 200 according to the processing requirements.

[0040] The three-axis mobile clamping platform 400, the replaceable fixture 500 and the sliding base 510 constitute a clamping mechanism, and the clamping mechanism is arranged on the processing platform 300. The three-axis mobile clamping platform 400 is fixed on the processing platform 300, and the replaceable fixture 500 is arranged in the vertical slide rail 410 of the three-axis mobile clamping platform 400, and is moved to a suitable position for pressing according to the actual situation during processing. The sliding base 510 is arranged in the fixed slide rail 420 of the three-axis mobile clamping platform 400, and is slid to a suitable position for horizontal positioning according to the actual situation during processing.

[0041] The replaceable clamp 500 includes a sliding base 510, a first screw rod 520, two blocks 530 and a replaceable chuck 540. The sliding base 510 is provided with a groove 511. The first screw rod 520 is rotatably arranged in the groove 511. The two blocks 530 are respectively threadedly connected with the positive thread section and the negative thread section of the first screw rod 520. The replaceable chuck 540 is arranged between the two blocks 530. Before work, the required replaceable chuck 540 is selected, and the positions of the blocks 530 on both sides are controlled by the first screw rod 520 to clamp the replaceable chuck 540. The replaceable chuck 540 includes a clamping head, and the clamping surface of the clamping head is provided with a clamping groove 541.

[0042] In some other embodiments, the replaceable clamp 500 may be fixed to the sliding base 510 by a detachable manner such as a snap connection or a threaded connection, and the present invention does not impose any specific limitation thereto.

[0043] The clamping mechanism 620 is installed on the vertical slide rail 410 through the connecting slider. During processing, each slide rail is adjusted to a suitable position according to the processing situation, and then the clamping mechanism 620 is lowered to position the aircraft engine blade to be processed.

[0044] The horizontal positioning fixture 600 includes a movable base 610 and a clamping mechanism 620 . The movable base 610 is slidably disposed on the fixed slide rail 420 , and the clamping mechanism 620 is slidably disposed on the movable base 610 via a connecting slider.

[0045] The movable base 610 is provided with a slot 611 , and the slot 611 is rotatably provided with a second screw rod 612 . The second screw rod 612 is threadedly connected with a clamping slider 613 . The clamping slider 613 is provided with a boss 614 , and the clamping mechanism 620 is slidably fixed to the boss 614 .

[0046] During processing, the second screw rod 612 adjusts the boss 614 to a suitable position according to the processing situation, and then the clamping mechanism 620 moves horizontally to horizontally position the aircraft engine blade to be processed.

[0047] In some other embodiments, the clamping mechanism 620 may be fixed to the movable base 610 by a detachable manner such as a snap connection or a threaded connection, and the present invention does not impose any specific limitation thereto.

[0048] Before work, the operator selects a suitable positioning hole according to actual needs to install the base 100 on the end of the manipulator or the processing machine tool, and selects a suitable replaceable chuck 540 according to actual processing needs, places the aircraft engine blade to be processed in the processing platform 300, and adjusts the position of each slide rail of the three-axis mobile clamping platform 400, presses down the clamping mechanism 620 to achieve depth positioning. After completing the depth positioning, adjust the position of the sliding base 510, control the height of the clamping mechanism 620 through the screw rod, and further adjust the extension length of the clamping mechanism 620 to achieve horizontal positioning. During work, the sliding connection block adjusts the processing platform 300 to a suitable position according to the actual processing needs, and the rotating platform 200 appropriately adjusts the angle of the processing platform 300 during the laser shock strengthening process to meet the processing needs of the aircraft engine blade to be processed. After the processing is completed, adjust the clamping mechanism and the position of the horizontal slide rail 430 to remove the workpiece. The next time you use it, you only need to adjust the position of the sliding connection block, and there is no need to install the overall fixture.

[0049] The utility model discloses a special fixture for laser shock strengthening of aero-engine blades, which adopts a base 100, a rotating platform 200, and a processing platform 300. The cooperation of the rotating platform 200 can complete the movement and rotation of the horizontal positioning fixture 600 and the replaceable fixture 500. After installation, the rotating platform 200 can be moved by a sliding connection block to avoid the need to reinstall the entire fixture under different processing conditions, which can effectively improve the use efficiency. The rotation of the clamping mechanism can be completed by controlling the rotating platform 200, which can effectively improve the processing efficiency. The base has multiple sets of through holes, which can be selected according to actual conditions for different types of mechanical arms and machine tools, effectively improving the applicability of the fixture; the clamping mechanism adopts the cooperation of a three-axis mobile clamping platform 400, a replaceable fixture 500 and a horizontal positioning fixture 600. The three-axis mobile clamping platform 400 can effectively realize the depth direction positioning of the aero-engine blade to be processed, and the horizontal positioning fixture 600 can effectively realize the horizontal direction positioning, thereby realizing the stable clamping of the aero-engine blade to be processed. Each module of the clamping mechanism can be moved according to the actual situation of the aircraft engine blade to be processed. The clamping and positioning process is convenient, and the different sizes of aircraft engine blades can be replaced by replacing the fixture to meet different processing requirements.

[0050] The preferred implementation modes of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A special fixture for engine blades, characterized in that: include: Base; A rotating platform, which is rotatably disposed on the base; The processing platform is arranged on the rotating platform. The processing platform is provided with two spaced-apart three-axis movable clamping platforms and two relatively arranged horizontal positioning clamps. The three-axis movable clamping platform is detachably provided with replaceable clamps. The horizontal positioning clamps and the replaceable clamps are arranged to form a clamping area.

2. A special fixture for engine blades according to claim 1, characterized in that: The base is provided with a slide groove, the slide groove is slidably provided with a slide block, and the rotating platform is rotatably arranged on the slide block.

3. A special fixture for engine blades according to claim 2, characterized in that: The base is provided with a drainage groove.

4. A special fixture for engine blades according to claim 2, characterized in that: The three-axis mobile clamping platform includes a vertical slide rail, a fixed slide rail and a horizontal slide rail. The fixed slide rail is arranged on the processing platform, the horizontal slide rail is slidably arranged on the fixed slide rail, the vertical slide rail slides on the horizontal slide rail, and the replaceable fixture is slidably arranged on the vertical slide rail.

5. A special fixture for engine blades according to claim 4, characterized in that: The horizontal positioning fixture comprises a movable base and a clamping mechanism. The movable base is slidably arranged on the fixed slide rail, and the clamping mechanism is slidably arranged on the movable base via a connecting slide block.

6. A special fixture for engine blades according to claim 5, characterized in that: The movable base is provided with a slot, the slot is rotatably provided with a second screw rod, the second screw rod is threadedly connected with a clamping slider, the clamping slider is provided with a boss, and the clamping mechanism is slidably fixed to the boss.

7. A special fixture for engine blades according to claim 6, characterized in that: The clamping mechanism includes an abutment rod and an abutment block arranged on the abutment rod.

8. The special fixture for engine blades according to claim 1, characterized in that: The replaceable clamp includes a sliding base, a first screw rod, two blocks and a replaceable chuck. The sliding base is provided with a groove. The first screw rod is rotatably arranged in the groove. The two blocks are respectively threadedly connected to the positive thread section and the negative thread section of the first screw rod. The replaceable chuck is arranged between the two blocks.

9. A special fixture for engine blades according to claim 8, characterized in that: The replaceable clamping head comprises a clamping head, and a clamping surface of the clamping head is provided with a clamping groove.

10. The special fixture for engine blades according to claim 1, characterized in that: A flange is connected between the rotating platform and the base.

Images