An aeronautical part machining jig

Abstract

The utility model provides a kind of aviation parts lathe processing fixture, belong to machining technical field.It includes the rotary chuck being installed on lathe, rotary chuck is along self radial and is equipped with sliding slot, sliding block is slidably arranged in sliding slot, sliding slot is uniformly spaced and is equipped with three along the circumference of rotary chuck, the first abutment portion for being used to contact with the outer wall of part is equipped in the end of sliding block that extends from sliding slot with stepped, and the extension rod is detachably connected on sliding block, and the extension rod extends outside rotary chuck along the sliding direction of sliding block, and the second abutment portion for being used to contact with the outer wall of part is equipped in the end of extension rod that is away from sliding block.When large size aviation part is clamped to lathe processing, extension rod can be installed on the first abutment portion, and the second abutment portion on extension rod moves with sliding block, so that the workpiece is clamped from outside to inside using the second abutment portion on extension, or it can be supported from inside to outside according to process requirement, with the effect of improving the range of workpiece that can be clamped by fixture.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a machining fixture for aerospace parts. Background Technology

[0002] Aviation parts are components used in aviation equipment such as airplanes, helicopters, drones, and satellites. With the vigorous development of aviation technology, the requirements for aviation parts are becoming more and more stringent. In particular, aviation parts need to maintain lightweight while focusing on structural strength to meet the higher requirements of current aviation equipment.

[0003] For parts that need to be machined by turning, a fixture is required to hold the parts. Traditional turning equipment usually uses a three-jaw chuck to center and hold the parts. However, since some parts used in aerospace are large in size, the clamping range applicable to traditional three-jaw chucks cannot meet the size of aerospace parts. Therefore, a turning fixture with a larger clamping range is needed. Utility Model Content

[0004] In view of the above problems, this utility model provides a machining fixture for aerospace parts.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A machining fixture for aerospace parts is provided, including a rotary chuck mounted on a lathe. The lathe has a first driving member for driving the rotary chuck to rotate. The rotary chuck has a groove along its radial direction, and a slider is slidably disposed in the groove. Three grooves are evenly spaced along the circumference of the rotary chuck. The rotary chuck has a second driving member for driving the sliders in the three grooves to slide synchronously closer to / away from each other. One end of the slider extending out of the groove has a stepped first abutment for contacting the outer wall of the part. An extension rod is detachably connected to the slider. Along the sliding direction of the slider, the end of the extension rod away from the slider extends outward from the rotary chuck, and the end of the extension rod away from the slider has a second abutment for contacting the outer wall of the part.

[0006] Furthermore, the slider has at least two first mounting holes, and the extension rod has a second mounting hole that matches the first mounting holes. The extension rod is fixedly connected to the slider by a connecting bolt that passes through both the first and second mounting holes.

[0007] Furthermore, an extension support rod is vertically fixedly connected to the end of the extension rod away from the slider, and a second abutment part is fixedly provided at both ends of the extension support rod, with the outer wall of the second abutment part being stepped.

[0008] Furthermore, a support seat is slidably mounted on the lathe along the axis of the rotary chuck. The support seat is equipped with a limiting component to restrict the sliding of the support seat on the lathe. A lower mounting seat and an upper mounting seat are vertically and vertically mounted on the support seat. Support rollers are rotatably mounted horizontally at intervals on both the lower and upper mounting seats. A third driving component is provided on the support seat to drive the lower and upper mounting seats to move closer or further apart synchronously.

[0009] Furthermore, the third driving component includes a bidirectional lead screw and a drive motor. A guide post is vertically arranged on the support base. The bidirectional lead screw is vertically and rotatably mounted on the support base. One end of the lower mounting base is slidably sleeved with the guide post and the other end is threadedly connected to the bidirectional lead screw. One end of the upper mounting base is slidably sleeved with the guide post and the other end is threadedly connected to the bidirectional lead screw. The drive motor is fixedly mounted on the support base to drive the bidirectional lead screw to rotate.

[0010] Furthermore, the limiting component includes a limiting plate. A slide rail is arranged parallel to the axial direction of the rotary chuck on the lathe. A support seat is slidably arranged on the slide rail. The limiting plate is located above the slide rail. A locking screw is threadedly connected to the support seat. One end of the locking screw is fixed with a handle, and the other end is rotatably connected to the limiting plate.

[0011] The beneficial effects of this utility model are as follows: When machining and clamping large-sized aerospace parts, an extension rod can be installed on the first abutment part. The second abutment part on the extension rod moves with the slider, thereby using the second abutment part on the extension to clamp the workpiece from the outside to the inside, or to support it from the inside to the outside according to process requirements, thus expanding the range of workpiece sizes that the fixture can adapt to. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the aerospace parts processing fixture according to an embodiment of this application.

[0013] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0014] Figure 3 This is a schematic diagram of the structure of the rotary chuck according to an embodiment of this application.

[0015] Among them, 1. lathe; 2. rotary chuck; 21. slider; 22. first abutment part; 23. connecting bolt; 3. extension rod; 31. second abutment part; 32. extension support rod; 4. support seat; 41. lower mounting seat; 411. seat body; 412. connecting rod; 42. upper mounting seat; 5. support roller; 61. double-acting lead screw; 62. drive motor; 63. guide column; 71. limiting piece; 72. slide rail; 73. locking screw; 8. reinforcing sleeve. Detailed Implementation

[0016] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] This application discloses a machining fixture for aerospace parts, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a lathe 1 and a rotary chuck 2 rotatably mounted on the lathe 1. The lathe 1 is equipped with a first driving component for driving the rotary chuck 2 to rotate. The first driving component is specifically an electric motor installed inside the lathe 1, and the electric motor is connected to the rotary chuck 2 for transmission. The rotary chuck 2 has a sliding groove along its own radial direction. Three sliding grooves are evenly spaced around the circumference of the rotary chuck 2. A slider 21 is slidably mounted in each sliding groove. The slider 21 has a first abutment part 22 that protrudes from the sliding groove and is integrally fixed to the slider 21, and is stepped, for contacting the outer wall of the part. A second driving component is provided on the rotary chuck to drive the sliders 21 in the three grooves to slide synchronously closer to / away from each other. Specifically, the second driving component can be a driving disk, which is coaxially rotatably mounted in the rotary chuck 2. The driving disk has a spiral-shaped planar thread on the side near the slider 21. The bottom wall of the groove connects to the mounting space of the driving disk. The bottom of the slider 21 has meshing teeth that cooperate with the planar thread on the driving disk. The slider 21 also meshes with the driving disk during its sliding in the groove. A bevel gear ring is coaxially fixed on the other side of the driving disk. A bevel gear is rotatably mounted in the rotary chuck 2, meshing with the bevel gear ring. One end of the bevel gear is rotatably connected to the rotary chuck 2 and exposed on the outer wall of the rotary chuck 2. A hexagonal groove for wrench operation is coaxially opened on the end of the bevel gear facing the outer side of the rotary chuck 2. The structure of the driving disk and other components that drive the three sliders 21 to move synchronously in the three-jaw chuck structure is a mature technology and therefore is not specifically shown in the attached drawings.

[0018] In this embodiment, an extension rod 3 may be detachably connected to the slider 21. Along the sliding direction of the slider 21, the end of the extension rod 3 away from the slider 21 extends outwards towards the rotary chuck 2, and a second abutment portion 31 for contacting the outer wall of the part is provided at the end of the extension rod 3 away from the slider 21. When clamping sized parts, by installing the extension rod 3 on each slider 21, the second abutment portion 31 on the extension rod 3 is used to clamp the part, thereby improving the applicability of the machining fixture.

[0019] Specifically, each slider 21 has at least two first mounting holes, and the extension rod 3 has a second mounting hole that matches the first mounting holes. The extension rod 3 is fixedly connected to the slider 21 by connecting bolts 23. By using two connecting bolts 23 to simultaneously pass through the first and second mounting holes and then threadedly connect with nuts, the extension rod 3 and slider 21 are fixed together, thereby improving the stability of the connection between the extension rod 3 and slider 21.

[0020] Furthermore, an extension support rod 32 is vertically fixedly connected to the end of the extension rod 3 away from the slider 21. The extension rod 3 is vertically connected to the middle of the extension support rod 32. Second abutment portions 31 are fixed to both ends of the extension support rod 32. The outer wall of the second abutment portion 31 is stepped, allowing for quick adaptation to clamping parts of different sizes. Specifically, the step on the second abutment portion 31 is frustum-shaped, adapting to the outer wall of the clamped part or the inner wall of the internal support part. To enhance the structural strength of the extension rod 3 and other components, and to ensure the second abutment portion 31 can securely clamp the part, in this embodiment, a reinforcing sleeve 8 can be fitted over the extension rod 3. The reinforcing sleeve 8 is threadedly fixed to the outer wall of the rotary chuck 2 via reinforcing ribs. As the slider 21 moves, the extension rod 3 remains inside the reinforcing sleeve 8 and is supported on the outer wall of the rotary chuck 2 by the reinforcing sleeve 8 and reinforcing ribs, thus providing support for the extension rod 3, reducing deformation when clamping the outer wall of the part, and improving the clamping stability of the part.

[0021] To improve the centering and clamping effect of larger parts, in this embodiment, a support seat 4 is slidably disposed on the lathe 1 along the axis of the rotary chuck 2. The support seat 4 is provided with a limiting member to restrict its sliding on the lathe 1. A lower mounting seat 41 and an upper mounting seat 42 are vertically and vertically disposed on the support seat 4. Support rollers 5 are horizontally spaced and rotatably disposed on both the lower mounting seat 41 and the upper mounting seat 42. A third driving member is provided on the support seat 4 to drive the lower mounting seat 41 and the upper mounting seat 42 to move synchronously closer or further apart. After the part is clamped and fixed by the second abutment part 31, the support seat 4 is moved to the part. The third driving member drives the lower mounting seat 41 and the upper mounting seat 42 to move synchronously closer, causing the support rollers 5 on both to roll and contact the outer wall of the part. When the part rotates with the rotary chuck 2 and is machined, the coaxiality of the part can be effectively maintained, improving the machining effect.

[0022] Specifically, the third driving component includes a bidirectional lead screw 61 and a drive motor 62. A guide post 63 is vertically mounted on the support base 4. The bidirectional lead screw 61 is vertically and rotatably mounted on the support base 4. The guide post 63 and the bidirectional lead screw 61 are located on opposite sides of the lathe 1. One end of the lower mounting base 41 is slidably sleeved with the guide post 63, and the other end is threadedly connected to the bidirectional lead screw 61. One end of the upper mounting base 42 is slidably sleeved with the guide post 63, and the other end is threadedly connected to the bidirectional lead screw 61. The upper mounting base 42 and the lower mounting base 41 are respectively connected to the opposite threaded sections at both ends of the bidirectional lead screw 61. In this embodiment, the drive motor 62 is fixedly mounted on the support base 4, and the output end of the drive motor 62 is connected to the bidirectional lead screw 61 for transmission. By driving the bidirectional lead screw 61 to rotate, the upper mounting base 42 and the lower mounting base 41 can be moved away from or closer to each other synchronously.

[0023] Furthermore, the lower mounting base 41 consists of two base bodies 411 and a connecting rod 412. The two base bodies 411 are respectively connected to the double-acting lead screw 61 and the guide post 63. A connecting sleeve is horizontally fixed on the two base bodies 411 along the width direction of the lathe 1. By inserting the connecting rod 412 into the two base bodies 411, the two base bodies 411 can be connected as one unit, allowing the two lower base bodies 411 to be driven to rise and fall simultaneously. A locking bolt can be threaded onto the connecting sleeve, and the locking bolt passes through the connecting sleeve and abuts against the connecting rod 412 inside the connecting sleeve. By pulling out the connecting rod 412 and rotating the two base bodies 411, space can be created between the two base bodies 411 to allow the tool holder on the lathe 1 to pass between the two base bodies 411.

[0024] In this embodiment, the limiting component includes a limiting piece 71. A slide rail 72 is arranged parallel to the axial direction of the rotary chuck 2 on the lathe 1. The support base 4 is slidably disposed on the slide rail 72. The limiting piece 71 is located above the slide rail 72. A locking screw 73 is threadedly connected to the support base 4. One end of the locking screw 73 is fixed with a handle, and the other end is rotatably connected to the limiting piece 71. After the support base 4 is moved to a suitable position on the lathe 1, the limiting piece 71 is pressed down against the slide rail 72 by rotating the handle, thereby fixing the support base 4. During the rotation of the part, the position of the support base 4 can be effectively kept stable.

[0025] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. A machining fixture for aerospace parts, characterized in that: Includes a rotary chuck (2) mounted on a lathe (1), the lathe (1) is provided with a first driving member for driving the rotary chuck (2) to rotate, the rotary chuck (2) is provided with a groove along its own radial direction, a slider (21) is slidably disposed in the groove, the groove is provided with three grooves evenly spaced along the circumference of the rotary chuck (2), and the rotary chuck (2) is provided with a second driving member for driving the sliders (21) in the three grooves to slide synchronously closer to / away from each other; The slider (21) has a stepped first abutment (22) at one end of the slide groove for contacting the outer wall of the part, and an extension rod (3) is detachably connected to the slider (21). Along the sliding direction of the slider (21), the end of the extension rod (3) away from the slider (21) extends outward to the outside of the rotary chuck (2), and the end of the extension rod (3) away from the slider (21) is provided with a second abutment (31) for contacting the outer wall of the part.

2. The machining fixture for aerospace parts according to claim 1, characterized in that, The slider (21) has at least two first mounting holes, and the extension rod (3) has a second mounting hole that matches the first mounting holes. The extension rod (3) is fixedly connected to the slider (21) by a connecting bolt (23) that passes through both the first and second mounting holes.

3. The machining fixture for aerospace parts according to claim 2, characterized in that, The extension rod (3) is vertically fixed to an extension support rod (32) at the end away from the slider (21). The second abutment part (31) is fixed at both ends of the extension support rod (32), and the outer wall of the second abutment part (31) is stepped.

4. The machining fixture for aerospace parts according to claim 1, characterized in that, A support seat (4) is slidably arranged on the lathe (1) along the axial direction of the rotating chuck (2). A limiting member is provided on the support seat (4) to restrict the sliding of the support seat (4) on the lathe (1). A lower mounting seat (41) and an upper mounting seat (42) are vertically and vertically arranged on the support seat (4). Support rollers (5) are rotatably arranged horizontally at intervals on both the lower mounting seat (41) and the upper mounting seat (42). A third driving member is provided on the support seat (4) to drive the lower mounting seat (41) and the upper mounting seat (42) to move closer or further away synchronously.

5. The machining fixture for aerospace parts according to claim 4, characterized in that, The third driving component includes a bidirectional lead screw (61) and a drive motor (62). A guide post (63) is vertically arranged on the support base (4). The bidirectional lead screw (61) is vertically and rotatably arranged on the support base (4). One end of the lower mounting base (41) is slidably sleeved with the guide post (63) and the other end is threadedly connected to the bidirectional lead screw (61). One end of the upper mounting base (42) is slidably sleeved with the guide post (63) and the other end is threadedly connected to the bidirectional lead screw (61). The drive motor (62) is fixedly arranged on the support base (4) to drive the bidirectional lead screw (61) to rotate.

6. A machining fixture for aerospace parts according to claim 5, characterized in that, The limiting component includes a limiting piece (71). A slide rail (72) is arranged on the lathe (1) parallel to the axial direction of the rotating chuck (2). The support base (4) is slidably arranged on the slide rail (72). The limiting piece (71) is located above the slide rail (72). A locking screw (73) is threadedly connected to the support base (4). One end of the locking screw (73) is fixed with a handle, and the other end is rotatably connected to the limiting piece (71).

Images