Aircraft engine part radial hole machining clamp

Abstract

The utility model relates to the technical field of aircraft engine part machining, and discloses an aircraft engine part radial hole machining clamp which comprises an outer ring, an inner ring and a circular ring part, the inner ring is fixedly installed in the center of the outer ring, the circular ring part is placed on the inner ring, and positioning mechanisms are arranged on the outer ring and the inner ring. The positioning mechanism comprises a circular guide rail and an inner side positioning part, the inner side positioning part is arranged in the inner ring, the circular guide rail is fixedly arranged on the outer wall of the outer ring in a sleeving mode, the circular ring part placed on the inner ring is positioned through the inner side positioning part, after the center of the circular ring part is aligned, a first motor rotates to drive a lead screw to rotate, and a second motor rotates to drive a second lead screw to rotate; and the second sliding block moves downwards to drive a first electric telescopic rod to move downwards, then an L-shaped pressing plate is driven to move downwards, the L-shaped pressing plate tightly presses the circular ring part, at the moment, the inner side positioning part can be loosened, and the situation that the inner side positioning part obstructs radial through hole forming is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine part processing, and specifically relates to a fixture for machining radial holes of aircraft engine parts. Background Technique

[0002] In the processing of aircraft engine parts, annular workpieces are often machined. Since circular workpieces cannot be quickly positioned, it takes a long time to find the center of the part's circular runout each time. At this time, the machine tool is in a stopped state, the utilization rate of the machine tool is low, the processing efficiency is low, and the operator's manual participation is relatively large, resulting in unstable part quality.

[0003] The existing Chinese patent CN221313383U discloses a fixture for quickly positioning and machining radial holes of aircraft engine parts. The fixture for quickly positioning and machining radial holes of aircraft engine parts drives the alignment drive to rotate around the axis of the alignment receiving groove centered by a servo motor. The arc-shaped drive chute forces the drive cooperation column to drive the alignment drive slider to move radially along the center alignment support ring. Multiple alignment drive sliders synchronously drive each center fixing column to press and support the inner side of the annular part, so that the annular part is aligned with the center of the entire fixture.

[0004] However, when drilling a through hole along the radial direction of the annular part, since the center fixing column presses and supports the inner side of the annular part, it will prevent the drill bit from penetrating the annular part, thereby causing problems of limited processing. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fixture for machining radial holes of aircraft engine parts to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A fixture for machining radial holes of aircraft engine parts, including an outer ring, an inner ring, and an annular part. The inner ring is fixedly installed at the center of the outer ring, the annular part is placed on the inner ring, and a positioning mechanism is arranged on the outer ring and the inner ring.

[0007] The positioning mechanism includes a circular guide rail and an inner side positioning component. The inner side positioning component is arranged inside the inner ring. The circular guide rail is fixedly sleeved on the outer wall of the outer ring. A slider one is slidably arranged on the inner side of the circular guide rail. A straight guide rail is fixedly installed on the top of the slider one. A motor one is fixedly installed on the top of the straight guide rail. A lead screw is fixedly installed at the output end of the motor one. A slider two is threadedly sleeved on the outer wall of the lead screw. The slider two is slidably arranged in the straight guide rail. An electric telescopic rod one is fixedly installed on the outer wall of the slider two facing the inner ring. An L-shaped pressing plate is fixedly installed at the extending end of the electric telescopic rod one. The L-shaped pressing plate presses on the annular part.

[0008] Further, the inner positioning member includes a guiding groove and an electric telescopic rod II. The guiding groove is formed at the top of the inner ring. The electric telescopic rod II is fixedly installed on the inner wall of the inner ring. A connecting plate is fixedly installed at the extending end of the electric telescopic rod II. A moving rod is fixedly installed at the top of the connecting plate. A supporting rod is slidably sleeved on the outer wall of the moving rod. The supporting rod passes through the guiding groove. The outer wall of the supporting rod contacts the inner side of the circular ring part. There are five inner positioning members, which are circumferentially and arrayedly distributed on the inner ring.

[0009] Further, a guiding rail is fixedly installed on the inner wall of the inner ring. The guiding rail is composed of a vertical section, an inclined section and a horizontal section, and the inclined section is located between the vertical section and the horizontal section. The guiding rail is provided with a track groove, and the moving rod movably passes through the track groove. The upper surface of the guiding rail contacts the bottom end face of the supporting rod.

[0010] Further, there are three sliding blocks I. Anti-slip protrusions are fixedly installed at the bottom of the L-shaped pressing plate.

[0011] Further, a toothed ring is fixedly installed at the bottom of the sliding block I. The toothed ring meshes with a gear. A rotating shaft is fixedly installed on the inner wall of the gear. A mounting seat is fixedly installed on the outer wall of the outer ring. A motor II is fixedly installed on the outer wall of the mounting seat. The output end of the motor II is fixedly connected to the bottom end of the rotating shaft.

[0012] Further, a rubber sleeve is fixedly sleeved on the outer wall of the supporting rod. The diameter of the rubber sleeve is the same as the width of the guiding groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The inner positioning member positions the circular ring part placed on the inner ring. After aligning the center of the circular ring part, the motor I rotates to drive the lead screw to rotate, so that the sliding block II moves downward. The downward movement of the sliding block II drives the electric telescopic rod I to move downward, and then drives the L-shaped pressing plate to move downward, so that the L-shaped pressing plate presses the circular ring part. At this time, the inner positioning member can be released to avoid the inner positioning member interfering with the radial opening of the hole.

[0015] 2. The electric telescopic rod I drives the L-shaped pressing plate to move horizontally, so that the L-shaped pressing plate can press on circular ring parts of different specifications. By pulling the sliding block I to move along the circular guide rail, the position of the straight guide rail is changed, and then the positions of the lead screw, the sliding block II, the electric telescopic rod I and the L-shaped pressing plate are changed, so that when axially opening a hole, the position of the L-shaped pressing plate can be changed to avoid the L-shaped pressing plate interfering with the bearing hole opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 Schematic structural view of the rear view;

[0018] Figure 3 Schematic structural view of the L-shaped pressing plate of the present utility model;

[0019] Figure 4 Schematic structural view of the front sectional view of the outer ring and the inner ring of the present utility model;

[0020] Figure 5 Schematic structural view of the guide rail and the support rod of the present utility model.

[0021] In the figure: 1. Outer ring; 2. Inner ring; 3. Positioning mechanism; 301. Circular guide rail; 302. First slider; 303. Straight guide rail; 304. Inner side positioning component; 305. First motor; 306. Lead screw; 307. Second slider; 308. First electric telescopic rod; 309. L-shaped pressing plate; 3041. Guide groove; 3042. Second electric telescopic rod; 3043. Connecting plate; 3044. Moving rod; 3045. Support rod; 4. Ring part; 5. Guide rail; 6. Track groove; 7. Rubber sleeve; 8. Mounting seat; 9. Second motor; 10. Rotating shaft; 11. Gear; 12. Ring gear; 13. Anti-slip protrusion. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a fixture for machining radial holes of aircraft engine parts, including an outer ring 1, an inner ring 2, and a ring part 4. The inner ring 2 is fixedly installed at the center of the outer ring 1, the ring part 4 is placed on the inner ring 2, and a positioning mechanism 3 is provided on the outer ring 1 and the inner ring 2;

[0024] The positioning mechanism 3 includes a circular guide rail 301 and an inner positioning member 304. The inner positioning member 304 is arranged inside the inner ring 2. The circular guide rail 301 is fixedly sleeved on the outer wall of the outer ring 1. A first slider 302 is slidably arranged on the inner side of the circular guide rail 301. A straight guide rail 303 is fixedly installed at the top of the first slider 302. A first motor 305 is fixedly installed at the top of the straight guide rail 303. A lead screw 306 is fixedly installed at the output end of the first motor 305. A second slider 307 is threadedly sleeved on the outer wall of the lead screw 306. The second slider 307 is slidably arranged in the straight guide rail 303. An electric telescopic rod 308 is fixedly installed on the outer wall of the second slider 307 facing the inner ring 2. An L-shaped pressing plate 309 is fixedly installed at the extending end of the electric telescopic rod 308. The L-shaped pressing plate 309 presses on the ring part 4. The ring part 4 placed on the inner ring 2 is positioned by the inner positioning member 304. After the center of the ring part 4 is aligned, the first motor 305 rotates to drive the lead screw 306 to rotate, so that the second slider 307 moves downward. The downward movement of the second slider 307 drives the electric telescopic rod 308 to move downward, and then drives the L-shaped pressing plate 309 to move downward, so that the L-shaped pressing plate 309 presses the ring part 4 tightly. At this time, the inner positioning member 304 can be loosened to avoid the inner positioning member 304 interfering with the radially opened hole. The L-shaped pressing plate 309 is driven by the electric telescopic rod 308 to move horizontally, so that the L-shaped pressing plate 309 can press on ring parts 4 of different specifications. By pulling the first slider 302 to move along the circular guide rail 301, the position of the straight guide rail 303 can be changed, and then the positions of the lead screw 306, the second slider 307, the electric telescopic rod 308, and the L-shaped pressing plate 309 can be changed, so that when axially opening a hole, the position of the L-shaped pressing plate 309 can be changed to avoid the L-shaped pressing plate 309 interfering with the bearing hole opening;

[0025] The inner positioning member 304 includes a guide groove 3041 and an electric telescopic rod 3042. The guide groove 3041 is opened at the top of the inner ring 2. The electric telescopic rod 3042 is fixedly installed on the inner wall of the inner ring 2. A connecting plate 3043 is fixedly installed at the extending end of the electric telescopic rod 3042. A moving rod 3044 is fixedly installed at the top of the connecting plate 3043. A supporting rod 3045 is slidably sleeved on the outer wall of the moving rod 3044. The supporting rod 3045 passes through the guide groove 3041. The outer wall of the supporting rod 3045 contacts the inner side of the ring part 4. There are five inner positioning members 304, and they are circumferentially and arrayedly distributed on the inner ring 2. By driving the connecting plate 3043 to move through the electric telescopic rod 3042, the moving rod 3044 is driven to move. The movement of the moving rod 3044 drives the supporting rod 3045 to move. After the five supporting rods 3045 simultaneously support the inner side of the ring part 4, the ring part 4 can be positioned and the center of the circle can be determined;

[0026] The inner wall of the inner ring 2 is fixedly installed with a guide rail 5. The guide rail 5 consists of a vertical section, an inclined section, and a horizontal section, and the inclined section is located between the vertical section and the horizontal section. The guide rail 5 is provided with a track groove 6, and the moving rod 3044 movably passes through the track groove 6. The upper surface of the guide rail 5 contacts the bottom end face of the support rod 3045. When the moving rod 3044 drives the support rod 3045 to move, the support rod 3045 moves up and down along the upper surface of the guide rail 5. That is, when the support rod 3045 moves towards the inner surface of the ring part 4, the support rod 3045 rises, and when the support rod 3045 moves towards the center of the inner ring 2, the support rod 3045 descends and retracts into the inner ring 2, achieving the positioning of the inner side of the ring part 4 and also achieving the avoidance during radial hole opening.

[0027] There are three slider ones 302, which are used to set three L-shaped pressing plates 309 to press and fix the ring part 4 from three different positions. The bottom of the L-shaped pressing plate 309 is fixedly installed with an anti-slip protrusion 13. The setting of the anti-slip protrusion 13 increases the friction between the L-shaped pressing plate 309 and the ring part 4, making the fixing effect of the L-shaped pressing plate 309 on the ring part 4 better.

[0028] The bottom of the slider one 302 is fixedly installed with a toothed ring 12. The toothed ring 12 meshes with a gear 11. The inner wall of the gear 11 is fixedly installed with a rotating shaft 10. The outer wall of the outer ring 1 is fixedly installed with a mounting seat 8. The outer wall of the mounting seat 8 is fixedly installed with a second motor 9. The output end of the second motor 9 is fixedly connected to the bottom end of the rotating shaft 10. When adjusting the position of the slider one 302, only need to start the second motor 9 to drive the rotating shaft 10 to rotate, and then drive the gear 11 to rotate. The rotation of the gear 11 drives the toothed ring 12 to rotate, and then drives the slider one 302 to rotate along the circular guide rail 301, realizing the adjustment of the position of the L-shaped pressing plate 309.

[0029] The outer wall of the support rod 3045 is fixedly sleeved with a rubber sleeve 7. The diameter of the rubber sleeve 7 is the same as the width of the guide groove 3041. The setting of the rubber sleeve 7 increases the friction between the support rod 3045 and the inner wall of the ring part 4, making the positioning effect of the support rod 3045 on the ring part 4 better.

[0030] Working principle: When in use, place the ring part 4 on the inner ring 2. Turn on the second electric telescopic rod 3042 to drive the connecting plate 3043 to move towards the outer ring 1, and then drive the moving rod 3044 to move. The movement of the moving rod 3044 drives the support rod 3045 to move. The support rod 3045 moves along the upper surface of the guide rail 5 and rises until the rubber sleeve 7 on the support rod 3045 presses against the inner side surface of the ring part 4, aligning the center of the ring part 4 with the center of the inner ring 2 to ensure the machining accuracy. After alignment, turn on the first electric telescopic rod 308 to drive the L-shaped pressing plate 309 to move, so that the L-shaped pressing plate 309 moves above the ring part 4. Then turn on the first motor 305 to drive the lead screw 306 to rotate, and then drive the second slider 307 to move downward. The downward movement of the second slider 307 drives the first electric telescopic rod 308 to move downward, and then drives the L-shaped pressing plate 309 to move downward, so that the L-shaped pressing plate 309 presses on the ring part 4. Then turn on the second electric telescopic rod 3042 to drive the connecting plate 3043 to move towards the center of the inner ring 2, so that the rubber sleeve 7 on the support rod 3045 is separated from the inner side surface of the ring part 4. The support rod 3045 moves downward along the surface of the guide rail 5, so that the support rod 3045 drives the rubber sleeve 7 to retract into the inner ring 2, ensuring that the support rod 3045 does not interfere with the drill bit when a radial through-hole is made in the ring part 4.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A radial hole machining fixture for aircraft engine parts, comprising an outer ring (1), an inner ring (2), and a ring part (4), characterized in that: The inner ring (2) is fixedly installed at the center of the outer ring (1). The circular ring part (4) is placed on the inner ring (2). A positioning mechanism (3) is arranged on the outer ring (1) and the inner ring (2). The positioning mechanism (3) includes a circular guide rail (301) and an inner positioning component (304). The inner positioning component (304) is arranged inside the inner ring (2). The circular guide rail (301) is fixedly sleeved on the outer wall of the outer ring (1). A slider one (302) is slidably arranged on the inner side of the circular guide rail (301). A straight guide rail (303) is fixedly installed on the top of the slider one (302). A motor one (305) is fixedly installed on the top of the straight guide rail (303). A lead screw (306) is fixedly installed at the output end of the motor one (305). A slider two (307) is threadedly sleeved on the outer wall of the lead screw (306). The slider two (307) is slidably arranged inside the straight guide rail (303). An electric telescopic rod one (308) is fixedly installed on the outer wall of the side of the slider two (307) facing the inner ring (2). An L-shaped pressing plate (309) is fixedly installed at the extending end of the electric telescopic rod one (308). The L-shaped pressing plate (309) presses on the circular ring part (4).

2. The radial hole machining fixture for an aircraft engine part according to claim 1, characterized in that: The inner positioning component (304) includes a guide groove (3041) and an electric telescopic rod two (3042). The guide groove (3041) is opened on the top of the inner ring (2). The electric telescopic rod two (3042) is fixedly installed on the inner wall of the inner ring (2). A connecting plate (3043) is fixedly installed at the extending end of the electric telescopic rod two (3042). A moving rod (3044) is fixedly installed on the top of the connecting plate (3043). A support rod (3045) is slidably sleeved on the outer wall of the moving rod (3044). The support rod (3045) passes through the guide groove (3041). The outer wall of the support rod (3045) contacts the inner side of the circular ring part (4). There are five inner positioning components (304), and they are circumferentially and arrayedly distributed on the inner ring (2).

3. A radial hole machining fixture for an aircraft engine part according to claim 1, characterized in that: A guide rail (5) is fixedly installed on the inner wall of the inner ring (2). The guide rail (5) is composed of a vertical section, an inclined section and a horizontal section, and the inclined section is located between the vertical section and the horizontal section. The guide rail (5) is provided with a track groove (6), and the moving rod (3044) movably passes through the track groove (6). The upper surface of the guide rail (5) contacts the bottom end face of the support rod (3045).

4. A radial hole machining fixture for aircraft engine parts according to claim 1, characterized in that: There are three sliders one (302). Anti-slip protrusions (13) are fixedly installed on the bottom of the L-shaped pressing plate (309).

5. The radial hole machining fixture for an aircraft engine part according to claim 1, characterized in that: A toothed ring (12) is fixedly installed on the bottom of the slider one (302). The toothed ring (12) meshes with a gear (11). A rotating shaft (10) is fixedly installed on the inner wall of the gear (11). A mounting seat (8) is fixedly installed on the outer wall of the outer ring (1). A motor two (9) is fixedly installed on the outer wall of the mounting seat (8). The output end of the motor two (9) is fixedly connected to the bottom end of the rotating shaft (10).

6. The radial hole machining fixture for an aircraft engine part according to claim 2, characterized in that: A rubber sleeve (7) is fixedly sleeved on the outer wall of the support rod (3045), and the diameter of the rubber sleeve (7) is the same as the width of the guide groove (3041).

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