High-precision clamping fixture for thin-wall casing of an aero-engine

Abstract

This invention discloses a high-precision clamping fixture for thin-walled aircraft engine casings, comprising a base, a hydraulic cylinder, clamping plates, a casing, and a dust collector. The base has a disc-shaped design, and a hydraulic cylinder is mounted on it. Clamping plates are fixedly connected to the top of the hydraulic cylinder; there are four clamping plates in total, with a hydraulic cylinder located below each clamping plate. The four clamping plates are arc-shaped, forming a circle. The casing is located within this circle. Additional clamping plates can be added above each clamping plate. A dust collector is installed on top of the base. The hydraulic cylinder is connected to a guide groove via a slider. This invention has a reasonable design; the hydraulic cylinder can change the height of the clamping plates to adapt to the clamping requirements of casings of different sizes.

Description

Technical Field

[0001] This invention belongs to the field of aero-engines, and in particular relates to a high-precision clamping fixture for a thin-walled casing of an aero-engine. Background Technology

[0002] As people's living standards continue to improve, their demand for long-distance travel is increasing. Airplanes are becoming more and more accepted as a means of long-distance travel. Aircraft engines provide power to aircraft and are an important component of aircraft. The thin-walled casing of aircraft engines requires clamping fixtures during processing. Existing high-precision clamping fixtures for thin-walled casings have a fixed height during use and cannot be adjusted as needed. At the same time, the dust generated during processing is detrimental to human health. Summary of the Invention

[0003] The purpose of this invention is to provide a high-precision clamping fixture for thin-walled casings of aero engines to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-precision clamping fixture for thin-walled aircraft engine casing includes a base, a hydraulic cylinder, clamping plates, a casing, and a dust collector. The base has a disc-shaped design and a hydraulic cylinder is mounted on it. Clamping plates are fixedly connected to the top of the hydraulic cylinder. There are four clamping plates in total, and a hydraulic cylinder is located below each clamping plate. The four clamping plates have an arc-shaped design and form a circle. The casing is located within the circle formed by the clamping plates. Additional clamping plates can be added above each clamping plate. A dust collector is installed on the top of the base. The hydraulic cylinder is connected to a guide groove via a slider.

[0006] Preferably, the guide groove is connected to the base, and a slider is provided in the guide groove for sliding connection. The slider is threadedly connected to the lead screw, which is installed in the guide groove. The lead screw is driven by a micro motor, which is installed on one side of the guide groove. A rubber pad is bonded to the inner side of the clamping piece, and an insertion hole is provided on the top of the clamping piece. The upper clamping piece is connected to the upper and lower clamping pieces through a post that matches the insertion hole to achieve quick connection. A detachable pressure plate is provided in the insertion hole of the uppermost clamping piece, and a threaded screw is provided on the pressure plate.

[0007] Preferably, the rubber pad is designed as a wedge block, the pressure plate is designed as an inverted L-shape, the pressure plate is positioned by screws, the horizontal plate of the pressure plate extends towards the arc center of the clamping piece, and the bottom of the screw contacts the top of the casing.

[0008] Preferably, the dust collector includes a guide rod, a slot, and a vacuum box. The guide rod is fixed to the base by a support leg. The guide rod is provided with a slidably connected slot. The slot is limited by a positioning screw. The vacuum box is fixed above the slot.

[0009] Compared with the prior art, the present invention has the following advantages: The present invention is reasonably designed; the hydraulic cylinder can adjust the height of the clamping plates to adapt to the clamping requirements of different sizes of casings, and can install additional clamping plates on the side with the larger height for different sides of the casing, thus improving adaptability; the vacuum box moves along the guide rod with the slot, so that it can be moved below the processing point during casing processing, and vacuuming operation is performed using the vacuum box, which reduces the diffusion of dust and thus protects personnel. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the high-precision clamping fixture for the thin-walled casing of an aero-engine according to the present invention.

[0011] Figure 2 This is a schematic diagram of the hydraulic cylinder and guide groove of the high-precision clamping fixture for thin-walled casing of aero-engine of the present invention.

[0012] Figure 3 This is an exploded schematic diagram of the dust collector of the high-precision clamping fixture for thin-walled casing of aero-engines according to the present invention. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figures 1-3As shown, a high-precision clamping fixture for a thin-walled aircraft engine casing includes a base 1, a hydraulic cylinder 2, clamping plates 3, a casing 4, and a dust collector 5. The base 1 has a disc-shaped design, and the hydraulic cylinder 2 is mounted on the base 1. Clamping plates 3 are fixedly connected to the top of the hydraulic cylinder 2. There are four clamping plates 3 in total, and a hydraulic cylinder 2 is located below each clamping plate 3. The four clamping plates 3 have an arc-shaped design and form a circle. The casing 4 is located within the circle formed by the clamping plates 3. Additional clamping plates 3 can be added above each clamping plate 3. A dust collector 5 is installed above the base 1. The hydraulic cylinder 2 is connected to the guide groove 11 via a slider 8. The guide groove 11 is connected to the base 1. A slider 8 is slidably connected inside the guide groove 11. The slider 8 is threadedly connected to the lead screw 9. The lead screw 9 is installed inside the guide groove 11. A telescopic cover is installed on the guide groove to reduce dust from entering the guide groove and affecting the normal operation of the lead screw. The lead screw is cleaned and maintained regularly. The lead screw 9 is driven by a micro motor 10, which is installed on one side of the guide groove 11. Through the lead screw and slider, the clamping plates can be gathered towards the housing to achieve clamping. The clamping plate 3 has a rubber pad 6 bonded to its inner side. A socket 13 is provided above the clamping plate 3. An additional clamping plate 3 is connected to the upper and lower clamping plates 3 via a matching post in the socket 13, enabling quick connection. A removable pressure plate 7 is located inside the socket 13 of the uppermost clamping plate 3. The pressure plate 7 has a threaded screw 12. The rubber pad 6 has a wedge-shaped design, increasing friction and protecting the casing. The pressure plate 7 has an inverted L-shaped design and is positioned using screws. The horizontal plate of the pressure plate 7 faces the clamping plate 3. Extending from the center of the arc, the bottom of the screw 12 contacts the top of the casing 4. The pressure plate and screw press down on the casing to increase the fixing force. The dust collector 5 includes a guide rod 14, a slot 15, and a vacuum box 16. The guide rod 14 is fixed to the base 1 by the support legs. The guide rod 14 is provided with a sliding slot 15. The slot 15 is limited by a positioning screw 17. The position of the slot is adjusted manually. The vacuum box 16 is fixed above the slot 15. A vacuum pump is provided on one side of the vacuum box to perform vacuuming operation.

[0015] The working principle of this invention is as follows: First, adjust the height of the clamping plates according to the needs of the casing to be processed. If the heights of different sides of the casing are different, the clamping plates can be increased on the side with the larger height. Place the casing in the middle of the four clamping plates, and start the micro motors under the four clamping plates in a diagonal pattern. The micro motors drive the clamping plates on the slider to converge towards the middle through the lead screw, thereby clamping and fixing the casing. After the casing is clamped, install the pressure plate in the insertion hole, rotate the screw to make the screw contact the casing and press down to fix it. When processing the casing, move the vacuum box below the processing point and fix it with positioning screws. Use a vacuum pump to evacuate the vacuum box and use the vacuum box to collect the dust generated during processing.

[0016] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. An aero-engine thin-walled casing high-precision clamping fixture, comprising a base (1), a hydraulic cylinder (2), a clamping piece (3), a casing (4), and a dust collector (5), characterized in that, The base (1) is designed in a disc shape. A hydraulic cylinder (2) is provided on the base (1). A clamping plate (3) is fixedly connected to the top of the hydraulic cylinder (2). There are four clamping plates (3). A hydraulic cylinder (2) is provided below each clamping plate (3). The four clamping plates (3) are designed in an arc shape. The four clamping plates (3) form a circle. The casing (4) is located inside the circle formed by the clamping plates (3). Another clamping plate (3) can be added above each clamping plate (3). A dust collector (5) is installed above the base (1). The hydraulic cylinder (2) is connected to the guide groove (11) via a slider (8).

2. The high-precision clamping fixture for thin-walled casings of an aero-engine according to claim 1, characterized in that, The guide groove (11) is connected to the base (1). The guide groove (11) is provided with a sliding block (8). The slider (8) is threadedly connected to the lead screw (9). The lead screw (9) is installed in the guide groove (11). The lead screw (9) is driven by a micro motor (10). The micro motor (10) is installed on one side of the guide groove (11). A rubber pad (6) is bonded to the inner side of the clamp (3). An insertion hole (13) is opened above the clamp (3). The upper clamp (3) is connected to the insertion post (18) that matches the insertion hole (13) to realize the quick connection of the upper and lower clamps (3). A detachable pressure plate (7) is provided in the insertion hole (13) of the uppermost clamp (3). A threaded screw (12) is provided on the pressure plate (7).

3. The high-precision clamping fixture for thin-walled casings of an aero-engine according to claim 2, characterized in that, The rubber pad (6) is designed as a wedge block, the pressure plate (7) is designed as an inverted L, the pressure plate (7) is positioned by screws, the horizontal plate of the pressure plate (7) extends to the arc center of the clamping piece (3), and the bottom of the screw (12) contacts the top of the casing (4).

4. The high-precision clamping fixture for a thin-walled casing of an aero-engine according to claim 1, characterized in that, The dust collector (5) includes a guide rod (14), a slot (15), and a vacuum box (16). The guide rod (14) is fixed on the base (1) by a support leg. The guide rod (14) is provided with a sliding slot (15). The slot (15) is limited by a positioning screw (17). The vacuum box (16) is fixed above the slot (15).

Images