Aircraft engine blade clamping device

Abstract

The utility model discloses an aircraft engine blade clamping device, which belongs to the field of aircraft blade clamps and comprises a device base, a clamping device, a chuck shell, a clamping plate, an arc-shaped rack, a gear, a connecting shaft, a ratchet wheel, ratchets, a transmission rod, a locking rod, a spring and a positioning device. When the blade needs to be clamped, the clamping device is used for driving the chuck shell to move to a mortise of the blade, then the connecting shaft is rotated to drive the clamping plate to clamp the blade, the locking rod is pulled upwards when clamping is released, the angle of the clamping plate can be reset by moving the locking rod upwards, the locking rod is loosened after the angle of the clamping plate is reset, and then the blade is clamped. The whole structure of the clamping device is convenient to operate, the clamping device can be matched with the shapes of mortises of most of tenon tooth structure blades and conduct clamping through the clamping plates with the adjustable angles, the tool manufacturing cost is reduced, the time for frequently replacing the clamping device is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of aircraft blade clamps, in particular to an aircraft engine blade clamping device. Background Art

[0002] When measuring or polishing blades, the blades need to be clamped and fixed. Since the blade body is a thin-walled rotational surface, the blade body cannot be clamped. The tenon and groove part of the blade is a symmetrical surface and is relatively thick, so it can be clamped. However, the working surface of the tenon and groove is also the reference for measurement or processing. Using the working surface of the tenon and groove as a clamping positioning surface also has shortcomings, which brings inconvenience to measurement.

[0003] Existing blade clamping tooling technologies mostly use the working surface of the blade tenon and groove for clamping and positioning. Their disadvantages are: it is easy to cause damage to the blade working surface; different blades require different tooling, which is costly and takes a long time to make the fixture; the structure is relatively complex, and the actual operation is greatly restricted by space factors; for measurement tasks with a large number of parts and a large volume, the measurement process is not easy to adjust and the efficiency is low. Utility Model Content

[0004] The utility model aims to solve the problems raised in the background technology and designs an aircraft engine blade clamping device.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is a kind of aircraft engine blade clamping device, including a device base, a clamping device, a chuck shell, a clamping plate, an arcuate rack, a gear, a connecting shaft, a ratchet, a ratchet, a transmission rod, a locking rod, a spring, and a positioning device. The device base is connected to the clamping device, the clamping device is connected to the chuck shell by bolts, the chuck shell is rotatably connected to the clamping plate, the clamping plate is fixedly connected to the arcuate rack, the arcuate rack is slidably connected to the chuck shell, the arcuate rack is meshed with the gear, the gear is fixedly connected to the connecting shaft, the connecting shaft is rotatably connected to the chuck shell, the connecting shaft is fixedly connected to the ratchet, the ratchet is meshed with the ratchet, the ratchet is installed on the transmission rod, the transmission rod is fixedly connected to the locking rod, the locking rod is slidably connected to the chuck shell, the spring is located in the chuck shell and one end is fixedly connected to the transmission rod, the other end of the spring is fixedly connected to the chuck shell, and the device base is fixedly connected to the positioning device.

[0006] Preferably, the clamping device includes a handle, a stud bolt, and a support seat, the handle passes through the device base and is fixedly connected to the stud bolt, the handle is rotatably connected to the device base, the stud bolt is rotatably connected to the device base, the thread directions at both ends of the stud bolt are opposite, the two ends of the stud bolt are respectively connected to a support seat by threaded engagement, and each of the support seats is connected to a chuck shell by bolts.

[0007] Preferably, the positioning device includes a positioning base, a fixed block, a positioning rod, and a fastening nail. The positioning base is fixedly connected to the device base, the positioning base is fixedly connected to the fixed block, the fixed block is slidably connected to the positioning rod, the fastening nail is connected to the fixed block by threaded engagement, and the top of the positioning rod is spherical.

[0008] Preferably, there are two bolt holes on the chuck shell and they are respectively located in the horizontal direction and the vertical direction of the chuck shell.

[0009] Preferably, a guide block is provided on the arc-shaped rack, the guide block is fixedly connected to the arc-shaped rack, and the guide block is slidably connected to the chuck housing.

[0010] Preferably, a rubber pad is provided on the clamping plate, and the rubber pad is fixedly connected to the clamping plate.

[0011] Preferably, a screw cap is provided on the connecting shaft, and the screw cap is fixedly connected to the connecting shaft.

[0012] Beneficial effects:

[0013] The utility model provides an aircraft engine blade clamping device, which has the following beneficial effects. Through its structural design, when the blade needs to be clamped in the vertical direction, the clamping device on the device base is used to drive the chuck shell to move to the tenon groove of the blade, and then the connecting shaft is rotated. The rotation of the connecting shaft drives the ratchet and the gear to rotate. The ratchet rotation prevents the ratchet from rotating through the ratchet teeth. The gear rotation drives the arc-shaped rack to slide toward the outside of the chuck shell. The sliding of the arc-shaped rack drives the clamping plate corresponding to the arc-shaped rack to rotate. After the clamping plate on each chuck shell is adjusted to an angle suitable for the tenon groove of the blade in the above manner, the clamping plate is again contacted with the tenon groove of the blade through the clamping device. When the blade is clamped, four lines contact the blade, and the positioning is reliable and the force is not too concentrated, thereby reducing deformation during clamping and damage to the blade. After the clamping plate clamps the tenon groove of the blade, the blade is positioned through the positioning device to prevent the blade from moving in the horizontal direction when being fixed. When it is necessary to clamp the blade horizontally, the chuck shell is removed from the clamping device by means of bolts and the direction is changed, and the blade can be clamped horizontally in the above manner. The positioning device can prevent the blade from moving vertically. When the clamping effect is released, the locking rod is pulled upward, and the locking rod moves upward to drive the transmission rod to move upward. The transmission rod moves upward to drive the two ratchets to move upward and separate from the ratchet. At this time, the connecting shaft can be rotated in the opposite direction to reset the angle of the clamping plate. When the angle of the clamping plate is reset, the locking rod is released, and the spring drives the transmission rod to reset. The transmission rod resets and drives the locking rod to reset while driving the ratchet and the ratchet to engage again, waiting for the next clamping by the staff. The overall structure of the utility model is easy to operate and through the clamping plate with adjustable angle, the utility model can match the shape of the tenon groove of most tenon structure blades and perform clamping, which reduces the tooling manufacturing cost and the time for frequent replacement of clamps, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an aircraft engine blade clamping device according to the utility model;

[0015] Figure 2 It is a schematic diagram of the top view of the structure of the aircraft engine blade clamping device of the utility model when clamped in the horizontal direction;

[0016] Figure 3 It is a cross-sectional view of the location of the gear in the chuck housing of the utility model;

[0017] Figure 4 It is a cross-sectional view of the ratchet wheel in the chuck housing of the utility model;

[0018] Figure 5 It is a side structural schematic diagram of the chuck shell of the utility model.

[0019] In the figure, 1. device base; 2. clamping device; 3. chuck housing; 4. clamping plate; 5. arc-shaped rack; 6. gear; 7. connecting shaft; 8. ratchet; 9. ratchet; 10. transmission rod; 11. locking rod; 12. spring; 13. positioning device; 14. guide block; 15. rubber pad; 16. screw cap; 201. handle; 202. stud bolt; 203. support seat; 1301. positioning base; 1302. fixing block; 1303. positioning rod; 1304. fastening nail. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-5The utility model provides a technical solution: an aircraft engine blade clamping device, including a device base 1, a clamping device 2, a chuck shell 3, a clamping plate 4, an arc-shaped rack 5, a gear 6, a connecting shaft 7, a ratchet 8, a ratchet 9, a transmission rod 10, a locking rod 11, a spring 12, and a positioning device 13. The device base 1 is connected to the clamping device 2, the clamping device 2 is connected to the chuck shell 3 by bolts, the chuck shell 3 is rotatably connected to the clamping plate 4, the clamping plate 4 is fixedly connected to the arc-shaped rack 5, and the arc-shaped rack 5 is slidably connected to the chuck shell 3. The arc-shaped rack 5 is meshed with the gear 6, the gear 6 is fixedly connected to the connecting shaft 7, the connecting shaft 7 is rotatably connected to the chuck housing 3, the connecting shaft 7 is fixedly connected to the ratchet 8, the ratchet 8 is meshed with the ratchet teeth 9, the ratchet teeth 9 are installed on the transmission rod 10, the transmission rod 10 is fixedly connected to the locking rod 11, the locking rod 11 is slidably connected to the chuck housing 3, the spring 12 is located in the chuck housing 3 and one end is fixedly connected to the transmission rod 10, the other end of the spring 12 is fixedly connected to the chuck housing 3, and the device base 1 is fixedly connected to the positioning device 13.

[0024] In the utility model, the clamping device 2 includes a handle 201, a stud bolt 202, and a support seat 203. The handle 201 passes through the device base 1 and is fixedly connected to the stud bolt 202. The handle 201 is rotatably connected to the device base 1, and the stud bolt 202 is rotatably connected to the device base 1. The thread directions of the two ends of the stud bolt 202 are opposite. The two ends of the stud bolt 202 are respectively connected to a support seat 203 through threaded engagement. Each support seat 203 is connected to a chuck shell 3 through bolts. The stud bolt 202 is driven to rotate on the device base 1 by rotating the handle 201. The rotation of the stud bolt 202 drives the support seat 203 engaged with the stud bolt 202 to move along the stud bolt 202. The movement of the support seat 203 drives the chuck shell 3 to move, completing the working process of the clamping device 2 driving the chuck shell 3 to move.

[0025] In the present invention, the positioning device 13 includes a positioning base 1301, a fixing block 1302, a positioning rod 1303, and a fastening nail 1304. The positioning base 1301 is fixedly connected to the device base 1, the positioning base 1301 is fixedly connected to the fixing block 1302, the fixing block 1302 is slidably connected to the positioning rod 1303, the fastening nail 1304 is connected to the fixing block 1302 by threaded engagement, the top of the positioning rod 1303 is spherical, and the positioning rod 1303 can be fixed by loosening the fastening nail 1304. The positioning rod 1303 can slide on the fixed block 1302, and the fixed block 1302 is fixed to the device base 1 through the positioning base 1301 to prevent the fixed block 1302 from moving. When the positioning rod 1303 is slidable, the positioning rod 1303 is slid to the end to contact the blade and then the fastening nail 1304 is tightened to fix the positioning rod 1303 to complete the working process of the positioning device 13 to position the blade. The spherical end of the positioning rod 1303 can achieve point positioning with the blade to avoid over-positioning.

[0026] In the utility model, there are two bolt holes on the chuck shell 3, which are respectively located in the horizontal direction and the vertical direction of the chuck shell 3. Through the bolt holes respectively located in the horizontal direction and the vertical direction of the chuck shell 3, the chuck shell 3 can change its direction to meet the staff's needs for the blade clamping direction.

[0027] In the utility model, a guide block 14 is provided on the arc-shaped rack 5, the guide block 14 is fixedly connected to the arc-shaped rack 5, and the guide block 14 is slidably connected to the chuck shell 3. The guide block 14 on the arc-shaped rack 5 can make the arc-shaped rack 5 slide on the chuck shell 3 more stably.

[0028] In the utility model, a rubber pad 15 is provided on the clamping plate 4, and the rubber pad 15 is fixedly connected to the clamping plate 4. The rubber pad 15 on the clamping plate 4 increases the friction between the blade tenon and the clamping plate 4 during contact, while preventing damage to the blade caused by excessive clamping.

[0029] In the utility model, a screw cap 16 is provided on the connecting shaft 7, and the screw cap 16 is fixedly connected to the connecting shaft 7. The screw cap 16 on the connecting shaft 7 can increase the contact area between the connecting shaft 7 and the staff's hand, so that the staff can rotate the connecting shaft 7 more easily.

[0030] In this embodiment: when it is necessary to clamp the blade in the vertical direction, the clamping device 2 on the device base 1 is used to drive the chuck shell 3 to move to the tenon groove of the blade, and the clamping device 2 drives the stud 202 to rotate on the device base 1 by turning the handle 201. The rotation of the stud 202 drives the support seat 203 engaged with the stud 202 to move along the stud 202, and the movement of the support seat 203 drives the chuck shell 3 to move to complete the working process of the clamping device 2 driving the chuck shell 3 to move, and then the connecting shaft 7 is rotated. The screw cap 16 on the connecting shaft 7 can increase the contact area between the connecting shaft 7 and the staff's hand, so that the staff can rotate the connecting shaft 7 more easily, and the rotation of the connecting shaft 7 drives the ratchet 8 and The gear 6 rotates, and the ratchet 8 rotates, and the ratchet teeth 9 prevent the ratchet 8 from rotating. The rotation of the gear 6 drives the arc rack 5 to slide toward the outside of the chuck shell 3. The guide block 14 on the arc rack 5 can make the arc rack 5 slide more stably on the chuck shell 3. The sliding of the arc rack 5 drives the clamping plate 4 corresponding to the arc rack 5 to rotate. After the clamping plate 4 on each chuck shell 3 is adjusted to an angle suitable for the blade tenon in the above manner, the chuck shell 3 is driven to move again by the clamping device 2 so that the chuck shell 3 drives the clamping plate 4 to contact with the blade tenon. After the clamping plate 4 contacts with the blade tenon and clamps the blade tenon, the positioning device 13 is used to position the blade to prevent the blade from moving in the horizontal direction when it is fixed, and the rubber pad on the clamping plate 4 is used. 15 While increasing the friction between the blade tenon and the clamping plate 4 during contact, it prevents the blade from being damaged by over-tightening. The positioning device 13 loosens the fastening nail 1304 to allow the positioning rod 1303 to slide on the fixing block 1302. The fixing block 1302 is fixed to the device base 1 through the positioning base 1301 to prevent the fixing block 1302 from moving. When the positioning rod 1303 is slidable, the positioning rod 1303 is slid to the end to contact the blade, and then the fastening nail 1304 is tightened to fix the positioning rod 1303 to complete the working process of the positioning device 13 for positioning the blade. The ball at the end of the positioning rod 1303 can achieve point positioning with the blade to avoid over-positioning. When the blade needs to be clamped in the horizontal direction, the outer part of the chuck is clamped. After the bolts connecting the shell 3 and the clamping device 2 are taken out, the direction of the chuck shell 3 is rotated to make the bolt holes in the vertical direction of the chuck shell 3 rotate to the horizontal direction so that the clamping plate 4 can meet the horizontal clamping. The chuck shell 3 and the clamping device 2 are connected again by bolts to clamp the blade in the horizontal direction. The positioning device 13 can prevent the blade from moving in the vertical direction. When the clamping effect is released, the locking rod 11 is pulled upward. The locking rod 11 moves upward to drive the transmission rod 10 to move upward. The transmission rod 10 moves upward to drive the two ratchets 9 to move upward and separate from the ratchet 8. At this time, the connecting shaft 7 is rotated in the opposite direction to reset the angle of the clamping plate 4. When the angle of the clamping plate 4 is reset, the locking rod 10 is released, and the spring 12 drives the transmission rod 10 to reset.The transmission rod 10 resets and drives the locking rod 11 to reset, while driving the ratchet 9 and the ratchet wheel 8 to engage again, waiting for the next clamping by the staff.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device for an aircraft engine blade, comprising a device base (1), a clamping device (2), a clamp housing (3), a clamping plate (4), an arc-shaped rack (5), a gear (6), a connecting shaft (7), a ratchet (8), ratchet teeth (9), a transmission rod (10), a locking rod (11), a spring (12), and a positioning device (13), characterized in that: The device base (1) is connected to the clamping device (2), the clamping device (2) is connected to the chuck shell (3) by bolts, the chuck shell (3) is rotatably connected to the clamping plate (4), the clamping plate (4) is fixedly connected to the arc-shaped rack (5), the arc-shaped rack (5) is slidably connected to the chuck shell (3), the arc-shaped rack (5) is meshedly connected to the gear (6), the gear (6) is fixedly connected to the connecting shaft (7), the connecting shaft (7) is rotatably connected to the chuck shell (3), and the connecting shaft ( 7) is fixedly connected to a ratchet (8), the ratchet (8) is meshed with a ratchet tooth (9), the ratchet tooth (9) is mounted on a transmission rod (10), the transmission rod (10) is fixedly connected to a locking rod (11), the locking rod (11) is slidably connected to a chuck housing (3), the spring (12) is located in the chuck housing (3) and one end of the spring (12) is fixedly connected to the transmission rod (10), the other end of the spring (12) is fixedly connected to the chuck housing (3), and the device base (1) is fixedly connected to a positioning device (13).

2. The aircraft engine blade clamping device according to claim 1, characterized in that: The clamping device (2) comprises a handle (201), a stud bolt (202), and a support seat (203); the handle (201) passes through the device base (1) and is fixedly connected to the stud bolt (202); the handle (201) is rotatably connected to the device base (1); the stud bolt (202) is rotatably connected to the device base (1); the threads at both ends of the stud bolt (202) are in opposite directions; both ends of the stud bolt (202) are respectively connected to a support seat (203) by threaded engagement; and each support seat (203) is connected to a clamp housing (3) by bolts.

3. The aircraft engine blade clamping device according to claim 1, characterized in that: The positioning device (13) comprises a positioning base (1301), a fixing block (1302), a positioning rod (1303), and a fastening nail (1304); the positioning base (1301) is fixedly connected to the device base (1); the positioning base (1301) is fixedly connected to the fixing block (1302); the fixing block (1302) is slidably connected to the positioning rod (1303); the fastening nail (1304) is connected to the fixing block (1302) by threaded engagement; and the top of the positioning rod (1303) is spherical.

4. The aircraft engine blade clamping device according to claim 1, characterized in that: There are two bolt holes on the chuck shell (3) and they are respectively located in the horizontal direction and the vertical direction of the chuck shell (3).

5. The aircraft engine blade clamping device according to claim 1, characterized in that: A guide block (14) is provided on the arc-shaped rack (5), the guide block (14) is fixedly connected to the arc-shaped rack (5), and the guide block (14) is slidably connected to the chuck housing (3).

6. The aircraft engine blade clamping device according to claim 1, characterized in that: The clamping plate (4) is provided with a rubber pad (15), and the rubber pad (15) is fixedly connected to the clamping plate (4).

7. The aircraft engine blade clamping device according to claim 1, characterized in that: The connecting shaft (7) is provided with a screw cap (16), and the screw cap (16) is fixedly connected to the connecting shaft (7).

Images