Multi-station long-span hole high-precision composite forming device

Abstract

The multi-station long-span hole high-precision composite forming device comprises a bottom frame, a bearing, a positioning plate, a fixed shaft, a positioning block, a pressing block, a base, a supporting block, a drilling and reaming sleeve and a braking assembly, the fixed shaft sequentially penetrates through the pressing block, the positioning block, the positioning plate and the bearing from top to bottom, an external thread is arranged at the upper end of the fixed shaft, and the braking assembly is arranged at the lower end of the fixed shaft. The pressing block and the positioning block are fixedly connected to the upper end of the fixed shaft through a locking nut; the lower end of the fixed shaft penetrates through the upper end of the bottom frame, is rotationally connected with the bottom frame and is braked through the braking assembly, and the positioning plate and the bearing are rotationally arranged at the upper end of the bottom frame and are fixedly connected with the fixed shaft; the base is fixedly arranged at the upper end of the bottom frame. When the multi-station long-span hole forming device is applied, a workpiece can be rapidly and accurately positioned and fixed, operation is convenient and fast, the precision of the multi-station long-span hole forming process is guaranteed, the product percent of pass is increased, and the use cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hole processing, in particular to a multi-station long-span hole high-precision composite molding device. Background Art

[0002] Multi-station long span holes are a common processing problem in many aviation and aerospace industrial manufacturing processes. Multi-station long span hole forming is due to the small diameter and long length of the tool bar in long span hole processing, resulting in poor rigidity and low strength. It is easy to produce vibration, ripples, and taper during cutting, which affects the straightness and surface roughness of the deep hole. It is difficult to ensure the hole position and operation convenience during multi-station processing.

[0003] Therefore, a special device with low cost, reliable performance, convenient operation and high precision is needed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a multi-station long-span hole high-precision composite molding device, which can quickly and accurately locate and fix the workpiece when used, is easy to operate, ensures the accuracy of the multi-station long-span hole molding process, improves the product qualification rate, and greatly reduces the cost of use.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions:

[0006] A multi-station long span hole high-precision composite molding device, comprising a chassis, a bearing, a positioning plate, a fixed shaft, a positioning block, a pressure block, a base, a support block, a drilling and reaming sleeve and a brake assembly, wherein the fixed shaft passes through the pressure block, the positioning block, the positioning plate and the bearing from top to bottom in sequence, the upper end of the fixed shaft is provided with an external thread, the pressure block and the positioning block are fixedly connected to the upper end of the fixed shaft through a locking nut; the lower end of the fixed shaft passes through the upper end of the chassis, is rotatably connected to the chassis, and is braked by the brake assembly, the positioning plate and the bearing are rotatably arranged at the upper end of the chassis, and are fixedly connected to the fixed shaft; the base is fixedly arranged at the upper end of the chassis; the support block is fixedly arranged on the chassis, and the upper and lower ends of the support block extend toward the bearing to form a first processing part and a second processing part, the first processing part and the second processing part are both provided with guide holes, and the two guide holes are aligned in the vertical direction; the drilling and reaming sleeves are provided with two, which are respectively fixedly arranged in the guide holes of the first processing part and the second processing part; the brake assembly is arranged at the lower end of the chassis, and is used to provide a fast rotation parking function for the fixed shaft.

[0007] In the present application, in order to position and fix the workpiece, a rotary positioning unit is composed of bearings, positioning plates, fixed shafts, positioning blocks and pressure blocks. When the workpiece needs to be processed, the workpiece is placed between the positioning plate and the positioning block. The locking nut on the upper end of the pressure block is screwed to press the positioning block, thereby fastening the workpiece between the positioning plate and the positioning block. The function of the bearing and the fixed shaft is to rotate the workpiece on the device, thereby realizing multi-station hole processing. After a group of long-span holes are processed, the bearing and the fixed shaft are rotated to rotate the workpiece, thereby realizing multi-station long-span hole processing. In order to enable the workpiece to stop quickly after rotation, a brake assembly is provided in the present application. When the workpiece is rotated to the processing position, the fixed shaft is stopped by the brake assembly to facilitate the processing of the workpiece. In the present application, in order to realize the processing of long-span holes, a base is arranged on the base frame, and a support block is fixed on the base. The upper and lower ends of the support block extend in the fixed axis direction to form a first processing part and a second processing part, and guide holes are arranged in the first processing part and the second processing part for positioning the upper and lower ends of the long-span holes. Drill sleeves are installed in the guide holes of the first processing part and the second processing part to complete the assembly of the processing components.

[0008] Further, the base frame includes a support plate and a support frame, the support frame is fixedly connected to the lower end of the support plate, and the brake assembly is fixedly arranged at the lower end of the support plate. Preferably, in order to make the support firm, the support frame is fixed to the support plate by bolt connection or welding, and the support frame can be constructed by a plate, a support rod, etc., without making too many restrictions.

[0009] Furthermore, the brake assembly includes a cam, a push rod, a block, a pressure plate, a first support and a second support, the first support including two first support plates fixed to the lower end of the support plate, the cam being movably arranged between the two support plates through a rotating shaft, and the push rod being fixedly connected to the cam; the block being arranged at the lower end of the cam and fixedly connected to the first support for limiting the cam; the second support including two second support plates fixed to the lower end of the support plate, being arranged between the fixed shaft and the first support, and the pressure plate being movably arranged between the two second support plates through a rotating shaft; one end of the pressure plate is connected to the cam, and the other end thereof is sleeved on the fixed shaft, and when the push rod is pressed downward, the cam rotates and drives the pressure plate to rotate so that the pressure plate fixes the fixed shaft. In order to achieve braking of the fixed shaft, in the present application, the braking assembly includes a cam, a push rod, a block, a pressure plate, a first support and a second support, wherein the first support is fixed to the lower end of the supporting plate, the second support is fixed to the lower end of the supporting plate, and the second support is located between the first support and the fixed shaft; the cam is rotatably arranged in the first support and connected to the push rod; the block is arranged at the lower end of the cam and fixed to the first support to achieve a limiting effect on the cam; the pressure plate is rotatably arranged in the second support, and one end of the pressure plate is connected to the fixed shaft, and the other end abuts against the cam. When the fixed shaft needs to be braked, the push rod is operated to rotate the cam, and the cam drives the pressure plate to rotate, so that the pressure plate locks the fixed shaft to achieve braking of the fixed shaft.

[0010] Furthermore, an auxiliary positioning assembly is provided on the support block, and the auxiliary positioning assembly includes a movable positioning block, a handle, a baffle, a pull rod, and a slider. The support block is provided with a through hole which passes through in a horizontal direction, the slider is arranged in the through hole, and the slider can move up and down in the through hole in a vertical direction; the baffle is fixedly arranged on a side of the support block away from the fixed axis and covers the through hole; the movable positioning block passes through the baffle and the slider, and the handle is fixedly arranged on a side of the movable positioning block away from the fixed axis; the pull rod passes through the through hole from the upper end of the support block and is fixedly connected to the slider, the pull rod is threadedly connected to the support block, and when the pull rod is rotated, the pull rod drives the slider to move up and down in the through hole. In order to further position the workpiece and make the workpiece processing point more accurate, in the present application, an auxiliary positioning component is provided, which is arranged on the support block, and the workpiece is positioned more accurately through the movable positioning block, the handle and the pull rod. When the workpiece is rotated to the position to be processed, the movable positioning block is pushed to the preset position to be processed by the handle, the locking nut is loosened and the workpiece is slowly pushed toward the movable positioning block until the workpiece abuts against the movable positioning block, so as to achieve accurate positioning of the workpiece; the purpose of the baffle is to prevent the movable positioning block from being pulled off. Preferably, in order to make the positioning of the movable positioning block more accurate and prevent the movable positioning block from moving after the workpiece contacts it, the movable positioning block is connected to the baffle and the slider by a threaded connection. Furthermore, in the present application, the auxiliary positioning assembly is also provided with a slider and a pull rod, and the slider can move up and down in the through hole of the support block. The purpose is that when the workpiece has a positioning hole, and the positioning hole is at different up and down positions at different workstations of the workpiece, or the positioning holes of different workpieces are at different up and down positions, the slider can be pulled up and down by the pull rod, thereby driving the movable positioning block to move up and down, so that the movable positioning block is aligned with different positioning holes to achieve the positioning effect. Preferably, in order to enable the pull rod to drive the slider to move, a cavity is provided in the slider, and the connection part between the pull rod and the slider is an inverted T-shaped, extending into the cavity of the slider, and can rotate in the slider.

[0011] In summary, compared with the prior art, the present invention has the following beneficial effects: the present invention ensures the accuracy of long-span deep hole processing and multi-station indexing during manual or automatic hole processing, and manually adjusts the multi-station indexing under the environment of long-span hole processing requirements to meet the requirements of different sizes; the patent of the present invention can quickly and accurately position and fix the product, is easy to operate, ensures the accuracy of the multi-station long-span hole forming process, improves the product qualification rate, and greatly reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0013] Figure 1It is a structural schematic diagram of an embodiment of the present invention;

[0014] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0015] Figure 3 Schematic diagram of workpiece processing according to an embodiment of the present invention.

[0016] The names corresponding to the reference numerals in the accompanying drawings are: 1. chassis; 2. bearing; 3. positioning plate; 4. fixed axis; 5. positioning block; 6. pressure block; 7. base; 8. support block; 9. movable positioning block; 10. handle; 11. baffle; 12. pull rod; 13. drill sleeve; 14. cam; 15. push rod; 16. block; 17. pressure plate; 18. first support; 19. second support; 20. slide block; 21. workpiece. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example:

[0019] like Figure 1 to Figure 3 As shown, a multi-station long-span hole high-precision composite molding device includes a base frame 1, a bearing 2, a positioning plate 3, a fixed shaft 4, a positioning block 5, a pressure block 6, a base 7, a support block 8, a drill sleeve 13 and a brake assembly. The fixed shaft 4 passes through the pressure block 6, the positioning block 5, the positioning plate 3 and the bearing 2 from top to bottom in sequence. The upper end of the fixed shaft 4 is provided with an external thread. The pressure block 6 and the positioning block 5 are fixedly connected to the upper end of the fixed shaft 4 through a locking nut; the lower end of the fixed shaft 4 passes through the upper end of the base frame 1, is rotatably connected to the base frame 1, and is braked by the brake assembly. The positioning plate 3 and the bearing 2 rotate It is arranged at the upper end of the base frame 1 and fixedly connected to the fixed shaft 4; the base 7 is fixedly arranged at the upper end of the base frame 1; the support block 8 is fixedly arranged on the base frame 1, and the upper and lower ends of the support block 8 extend toward the bearing 2 to form a first processing part and a second processing part, and the first processing part and the second processing part are both provided with guide holes, and the two guide holes are aligned in the vertical direction; two drill and reamer sleeves 13 are provided, which are respectively fixedly arranged in the guide holes of the first processing part and the second processing part; the brake assembly is arranged at the lower end of the base frame 1, and is used to provide a quick rotation parking function for the fixed shaft 4.

[0020] In the embodiment of the present application, in order to position and fix the workpiece 21, a rotary positioning unit is composed of a bearing 2, a positioning plate 3, a fixed axis 4, a positioning block 5 and a pressure block 6. When the workpiece 21 needs to be processed, the workpiece 21 is placed between the positioning plate 3 and the positioning block 5. By screwing the locking nut on the upper end of the pressure block 6, the pressure block 6 presses the positioning block 5, and then the workpiece 21 is fastened between the positioning plate 3 and the positioning block 5. The function of the bearing 2 and the fixed axis 4 is to rotate the workpiece 21 on the device, thereby realizing multi-station hole processing. After a group of long-span holes are processed, the bearing 2 and the fixed axis 4 are rotated to rotate the workpiece 21, thereby realizing multi-station long-span hole processing. In order to enable the workpiece 21 to stop quickly after rotation, a brake assembly is provided in the present application. When the workpiece 21 is rotated to the processing position, the fixed axis 4 is stopped by the brake assembly to facilitate the processing of the workpiece 21. In the present application, in order to realize the processing of long span holes, a base 7 is arranged on the base frame 1, and a support block 8 is fixed on the base 7. The upper and lower ends of the support block 8 extend toward the fixed axis 4 to form a first processing part and a second processing part, and guide holes are arranged in the first processing part and the second processing part for positioning the upper and lower ends of the long span holes. Drill sleeves 13 are installed in the guide holes of the first processing part and the second processing part to complete the assembly of the processing components.

[0021] Furthermore, the base frame 1 includes a support plate and a support frame, the support frame is fixedly connected to the lower end of the support plate, and the brake assembly is fixedly arranged at the lower end of the support plate. Preferably, in order to make the support firm, the support frame is fixed to the support plate by bolt connection or welding, and the support frame can be constructed by a plate, a support rod, etc., without making too many restrictions.

[0022] Furthermore, the brake assembly includes a cam 14, a push rod 15, a block 16, a pressure plate 17, a first support 18 and a second support 19, wherein the first support 18 includes two first support plates fixed to the lower end of the support plate, the cam 14 is movably arranged between the two support plates through a rotating shaft, and the push rod 15 is fixedly connected to the cam 14; the block 16 is arranged at the lower end of the cam 14 and fixedly connected to the first support 18 for limiting the cam 14; the second support 19 includes two second support plates fixed to the lower end of the support plate, arranged between the fixed shaft 4 and the first support 18, and the pressure plate 17 is movably arranged between the two second support plates through a rotating shaft; one end of the pressure plate 17 is connected to the cam 14, and the other end thereof is sleeved on the fixed shaft 4. When the push rod 15 is pressed downward, the cam 14 rotates and drives the pressure plate 17 to rotate so that the pressure plate 17 fixes the fixed shaft 4. In order to achieve braking of the fixed shaft 4, in the present application, the braking assembly includes a cam 14, a push rod 15, a block 16, a pressure plate 17, a first support 18 and a second support 19, wherein the first support 18 is fixed to the lower end of the supporting plate, the second support 19 is fixed to the lower end of the supporting plate, and the second support 19 is located between the first support 18 and the fixed shaft 4; the cam 14 is rotatably arranged in the first support 18 and is connected to the push rod 15; the block 16 is arranged at the lower end of the cam 14 and fixed to the first support 18 to achieve a limiting effect on the cam 14; the pressure plate 17 is rotatably arranged in the second support 19, and one end of the pressure plate 17 is connected to the fixed shaft 4, and the other end abuts against the cam 14. When it is necessary to brake the fixed shaft 4, the push rod 15 is operated to rotate the cam 14, and the cam 14 drives the pressure plate 17 to rotate, so that the pressure plate 17 locks the fixed shaft 4 to achieve braking of the fixed shaft 4.

[0023] Furthermore, an auxiliary positioning assembly is provided on the support block 8, and the auxiliary positioning assembly includes a movable positioning block 9, a handle 10, a baffle 11, a pull rod 12, and a slider 20. The support block 8 is provided with a through hole that passes through in the horizontal direction, and the slider 20 is arranged in the through hole, and the slider 20 can move up and down in the through hole in the vertical direction; the baffle 11 is fixedly arranged on the side of the support block 8 away from the fixed axis 4 and covers the through hole; the movable positioning block 9 passes through the baffle 11 and the slider 20, and the handle 10 is fixedly arranged on the side of the movable positioning block 9 away from the fixed axis 4; the pull rod 12 passes through the through hole from the upper end of the support block 8 and is fixedly connected to the slider 20. The pull rod 12 is threadedly connected to the support block 8. When the pull rod 12 is rotated, the pull rod 12 drives the slider 20 to move up and down in the through hole. In order to further position the workpiece 21 and make the processing point of the workpiece 21 more accurate, in the present application, an auxiliary positioning component is provided, and the auxiliary positioning component is provided on the support block 8. The workpiece 21 is positioned more accurately through the movable positioning block 9, the handle 10 and the pull rod 12. When the workpiece 21 is rotated to the position to be processed, the movable positioning block 9 is pushed to the preset position to be processed of the workpiece 21 through the handle 10, the locking nut is loosened and the workpiece 21 is slowly pushed toward the movable positioning block 9 until the workpiece 21 abuts against the movable positioning block 9, so as to achieve accurate positioning of the workpiece 21; the purpose of the baffle 11 is to prevent the movable positioning block 9 from being pulled off. Preferably, in order to make the positioning of the movable positioning block 9 more accurate and prevent the movable positioning block 9 from moving after the workpiece 21 contacts it, the movable positioning block 9 is connected to the baffle 11 and the slider 20 by threaded connection. Furthermore, in the present application, the auxiliary positioning assembly is also provided with a slider 20 and a pull rod 12. The slider 20 can move up and down in the through hole of the support block 8. The purpose is that when the workpiece 21 has a positioning hole, and the positioning hole is at different up and down positions at different workstations of the workpiece 21, or the positioning holes of different workpieces 21 are at different up and down positions, the slider 20 can be pulled up and down by the pull rod 12, thereby driving the movable positioning block 9 to move up and down, so that the movable positioning block 9 is aligned with different positioning holes to achieve the positioning effect. Preferably, in order to enable the pull rod 12 to drive the slider 20 to move, a cavity is provided in the slider 20, and the connection portion between the pull rod 12 and the slider 20 is an inverted T-shaped portion, extending into the cavity of the slider 20, and can rotate in the slider 20.

[0024] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-station long span hole high precision composite molding device, characterized in that: The invention comprises a base frame (1), a bearing (2), a positioning plate (3), a fixed shaft (4), a positioning block (5), a pressure block (6), a base (7), a support block (8), a drill sleeve (13) and a brake assembly. The fixed shaft (4) passes through the pressure block (6), the positioning block (5), the positioning plate (3) and the bearing (2) in sequence from top to bottom. The upper end of the fixed shaft (4) is provided with an external thread. The pressure block (6) and the positioning block (5) are fixedly connected to the upper end of the fixed shaft (4) through a locking nut. The lower end of the fixed shaft (4) passes through the upper end of the base frame (1) and is rotatably connected to the base frame (1) and braked by the brake assembly. The positioning plate (3) and the bearing (2) are rotatably connected to the base frame (1). The support block (8) is fixedly arranged on the upper end of the base frame (1) and is fixedly connected to the fixed shaft (4); the base (7) is fixedly arranged on the upper end of the base frame (1); the support block (8) is fixedly arranged on the base frame (1), and the upper and lower ends of the support block (8) extend toward the bearing (2) to form a first processing portion and a second processing portion, and the first processing portion and the second processing portion are both provided with guide holes, and the two guide holes are aligned in the vertical direction; two drill and reamer sleeves (13) are provided, which are respectively fixedly arranged in the guide holes of the first processing portion and the second processing portion; the brake assembly is arranged at the lower end of the base frame (1) and is used to provide a rapid rotation parking function for the fixed shaft (4).

2. A multi-station long span hole high precision composite molding device according to claim 1, characterized in that: The base frame (1) comprises a supporting plate and a supporting frame, wherein the supporting frame is fixedly connected to the lower end of the supporting plate, and the brake assembly is fixedly arranged at the lower end of the supporting plate.

3. A multi-station long span hole high precision composite molding device according to claim 2, characterized in that: The brake assembly comprises a cam (14), a push rod (15), a stopper (16), a pressure plate (17), a first support (18) and a second support (19), wherein the first support (18) comprises two first support plates fixed to the lower end of a support plate, the cam (14) is movably arranged between the two support plates via a rotating shaft, the push rod (15) is fixedly connected to the cam (14); the stopper (16) is arranged at the lower end of the cam (14) and is fixedly connected to the first support (18) for adjusting the cam (14). 4) for limiting; the second support (19) comprises two second support plates fixed to the lower end of the support plate, which are arranged between the fixed shaft (4) and the first support (18); the pressure plate (17) is movably arranged between the two second support plates through a rotating shaft; one end of the pressure plate (17) is connected to the cam (14), and the other end is sleeved on the fixed shaft (4); when the push rod (15) is pressed downward, the cam (14) rotates and drives the pressure plate (17) to rotate, so that the pressure plate (17) fixes the fixed shaft (4).

4. The multi-station long span hole high precision composite molding device according to claim 1, characterized in that: The support block (8) is provided with an auxiliary positioning assembly, and the auxiliary positioning assembly comprises a movable positioning block (9), a handle (10), a baffle (11), a pull rod (12), and a slider (20). The support block (8) is provided with a through hole that passes through in a horizontal direction, and the slider (20) is arranged in the through hole, and the slider (20) can move up and down in the through hole in a vertical direction; the baffle (11) is fixedly arranged on a side of the support block (8) away from the fixed axis (4), and The movable positioning block (9) is covered on the through hole; the movable positioning block (9) passes through the baffle (11) and the slider (20); the handle (10) is fixedly arranged on the side of the movable positioning block (9) away from the fixed axis (4); the pull rod (12) passes through the through hole from the upper end of the support block (8) and is fixedly connected to the slider (20); the pull rod (12) is threadedly connected to the support block (8); when the pull rod (12) is rotated, the pull rod (12) drives the slider (20) to move up and down in the through hole.

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