Clamping tool for detecting swing flexibility of rotating arm bearing

Abstract

The utility model provides a clamping tool for detecting swing flexibility of a tumbler bearing, which belongs to the field of detection and is characterized in that a linear guide rail is mounted on a bottom plate, a left positioning block, a left clamping block and a right clamping block are sequentially mounted on a plurality of sliders on the linear guide rail, and a right positioning block is fixedly mounted beside the right clamping block; two lugs of the rotating arm are clamped through eccentric cam clamps respectively, a right rotating arm is hinged to a right positioning block, a threaded hole is formed in the right rotating arm, a self-locking indexing pin is installed in the threaded hole, and two bearing inner holes of the rotating arm are jointly positioned through the threaded hole and a swing assembly of detection equipment, so that the two bearings are coaxial. When the swing flexibility is detected, standardized clamping can be realized, the inner bore axes of the inner rings of the two bearings are ensured to be parallel to the driving lever, and the detection of the two bearings can be completed by one-time clamping without adjustment.

Description

Technical Field

[0001] The utility model belongs to the field of detection and relates to a clamping tool for detecting the swing flexibility of a rotating arm bearing. Background Art

[0002] The shape of the rotating arm installed on the aircraft control system is as follows Figure 2 As shown, bearings are installed at the ends of the ears on both sides. When replacing bearings or new products, they need to be installed according to Figure 1 The swing flexibility check is carried out in a prescribed manner. The inner ring of the bearing should swing to a certain angle β under the action of the torque Mkp.

[0003] The arm's shape and structure are irregular, and the centerlines of its two bearings are coaxial. After securing them with a clamp or other fixing tool, two levers must be inserted sequentially into the inner bores of the bearing inner rings to swing the inner rings. Due to the lack of a standard fixture to secure the arm, it's difficult to ensure that the inner bore axes of both bearings are simultaneously parallel to the levers. Consequently, after the lever is inserted into the inner bore of one bearing's inner ring and swung, it needs to be adjusted again when inserting it into the inner bore of the second bearing's inner ring. (The inner ring cannot be rotated, as this would cause the inner and outer rings to be misaligned at the starting test position, which would not meet the test's starting position requirements.) Utility Model Content

[0004] The utility model provides a clamping tool for detecting the swing flexibility of a swing arm bearing. When detecting the swing flexibility, the swing arm can be clamped in a standardized manner to ensure that the axes of the inner rings and inner holes of the two bearings are parallel to the shift rod. The detection of the two bearings can be completed after one clamping without any adjustment (it needs to cooperate with the automatic movement function of the shift rod. The original equipment is assumed to have this function, which is not included in the content of the utility model).

[0005] The specific technical solutions of the utility model are as follows:

[0006] A clamping tool for detecting the swing flexibility of a swing arm bearing is used in conjunction with a detection device. The detection device is equipped with a swing component 2, and the swing component 2 includes a lever for inserting into the inner hole of the inner ring of the bearing to be tested of the swing arm 1 to drive the inner ring of the bearing to be tested to swing; the clamping tool includes a linear guide 3, a right positioning block 4, a right rotating arm 5, a self-locking indexing pin 6, a right clamping block 7, a right eccentric cam clamp 8, a stop block 9, a left positioning block 10, a left clamping block 11, a base plate 12, a left eccentric cam clamp 13, and a base 14.

[0007] The lower end of the base 14 is connected to the detection equipment platform, and the upper end is connected to the bottom plate 12.

[0008] The base plate 12 is a flat plate, with a slide rail of the linear guide rail 3 fixed on one side of the upper surface. Three sliders are provided on the slide rail. A stop block 9 is fixed on the base plate 12 near one end of the linear guide rail 3 to limit the position of the slider on the linear guide rail 3.

[0009] The left side positioning block 10 is a strip block, which is fixedly connected to the slider of the linear guide rail 3 and slides with the slider. The left side positioning block 10 is arranged next to the stop block 9 and fits with the stop block 9 when working. An arc depression is provided on the upper surface of one end thereof to avoid interference when the swing component 2 is inserted into the bearing of the swing arm 1. An arc boss is provided on the side of the arc depression away from the stop block 9 to cooperate with the left clamping block 11 to clamp one side ear of the swing arm 1. The diameter of the arc surface on the upper end of the arc boss is larger than the outer diameter of the inner ring of the bearing of the swing arm 1 to avoid interference with the swing of the inner ring of the bearing. A transverse threaded hole is provided on the side surface of the other end of the left side positioning block 10, and its side wall away from the stop block 9 serves as a positioning surface to position the end face of one end of the swing arm 1.

[0010] The left clamping block 11 is fixed on another slider on the linear guide rail 3. The left clamping block 11 is arranged next to the left positioning block 10. An arc-shaped groove is provided on the upper surface of one end thereof. The inner diameter of the arc-shaped groove is larger than the outer diameter of the inner ring of the bearing of the swing arm 1 to avoid interfering with the swing of the inner ring of the bearing, and cooperates with the arc-shaped boss on the left positioning block 10 to clamp one side ear of the swing arm 1. The end surface of the left clamping block 11 serves as the positioning surface for clamping the swing arm 1, and is used to position the side wall of the swing arm 1 close to the bearing; a transverse through hole is provided on the side surface of the other end of the left clamping block 11, and the transverse through hole is coaxial with the transverse threaded hole on the left positioning block 10.

[0011] The left eccentric cam clamp 13 is a standard part. It passes through the transverse through hole of the left clamping block 11 and is screwed into the transverse threaded hole on the left positioning block 10. It is used to make the left clamping block 11 quickly approach the left positioning block 10 and clamp the ear of the rotating arm 1.

[0012] The right-side positioning block 4 is fixed on the third slider of the linear guide rail 3, and an arc recess is provided on the upper surface of one end thereof, which is used to avoid interference when the lever of the swing component 2 is inserted into the bearing. Its inner diameter is larger than the outer diameter of the inner ring of the bearing on the swing arm 1 to avoid interference with the swing of the inner ring of the bearing. At the same time, it is used to cooperate with the right-side clamping block 7 to clamp the ear piece on the other side of the swing arm 1. The end face of the right-side positioning block 4 is flush with the end face of the same side of the left-side clamping block 11, and they serve as the positioning surface for clamping the swing arm 1. The other end is provided with a transverse threaded hole.

[0013] The right side clamping block 7 is a U-shaped block with an opening downward, which is fixed on the base plate 12 and located on the outside of the right side positioning block 4. Its U-shaped opening is used to avoid the linear guide rail 3 and the slider. The upper surface of one end of the right side clamping block 7 is provided with an arc groove. The inner diameter of the arc groove is larger than the outer diameter of the inner ring of the bearing on the swing arm 1 to avoid interfering with the swing of the inner ring of the bearing. At the same time, it is used to cooperate with the arc depression of the right side positioning block 4 to clamp the ear piece on the other side of the swing arm 1. A double ear piece structure is provided on the upper part of the end surface of the other end of the right side clamping block 7. Both ears are provided with through holes and are coaxial. A horizontal through hole is provided on the side surface of this end of the right side clamping block 7, which is coaxial with the horizontal threaded hole of the right side positioning block 4.

[0014] The main body of the right rotating arm 5 is a straight rod, one end of which is provided with a horizontal cylindrical structure, and the center of the cylindrical structure is provided with a threaded inner hole. The other end of the right rotating arm 5 is provided with a downward right-angle corner and a through hole at the end. The right-angle corner end is inserted into the double-ear structure at the end of the right clamping block 7. The two are clearance-fitted and hinged, so that the right rotating arm 5 can rotate. The outer diameter of the cylindrical structure at the end of the right rotating arm 5 matches the arc groove at the end of the right clamping block 7, so that the cylindrical structure can fall into the arc groove. After falling in, the straight rod part of the right rotating arm 5 fits with the upper end surface of the right clamping block 7. This position is the closed position. When the right rotating arm 5 is rotated to the vertical position, it is in the open state. In the closed state, the threaded inner hole of the cylindrical structure of the right rotating arm 5 is coaxial with the measuring position of the lever of the swing assembly 2, ensuring that the inner ring inner holes of the two bearings of the rotating arm 1 are on the same axis.

[0015] The self-locking indexing pin 6 is a standard part. The cylindrical inner hole of the pin is consistent with the inner hole of the inner ring of the bearing of the rotating arm 1. It is installed from the outside in the threaded inner hole of the cylindrical structure of the right rotating arm 5. The pin passes through the threaded inner hole and is inserted into the inner hole of the inner ring of the bearing on the ear piece on the other side of the rotating arm 1 to achieve the positioning of the rotating arm 1.

[0016] The right eccentric cam clamp 8 is a standard part. After passing through the transverse through hole of the right clamping block 7, it is screwed into the transverse threaded hole of the right positioning block 4 to make the right clamping block 7 close to the ear on the other side of the clamping arm 1 toward the right positioning block 4.

[0017] The beneficial effect of the present invention is that when detecting the swing flexibility, the present invention can standardize the clamping to ensure that the axes of the inner holes of the inner rings of the two bearings are parallel to the shift rod, and the detection of the two bearings can be completed in one clamping without adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the inspection requirements for the swing arm bearing after installation;

[0019] Figure 2 Schematic diagram of the rotating arm;

[0020] Figure 3 It is an overall schematic diagram of the utility model;

[0021] Figure 4 is a schematic diagram of the swing assembly;

[0022] Figure 5 This is a schematic diagram of the positioning block on the right;

[0023] Figure 6 It is a schematic diagram of the right rotating arm;

[0024] Figure 7 It is a schematic diagram of the clamping block on the right side;

[0025] Figure 8 This is a schematic diagram of the positioning block on the left;

[0026] Figure 9 Schematic diagram of the left clamping block.

[0027] In the figure: 1 rotating arm; 2 swing assembly; 3 linear guide; 4 right positioning block; 5 right rotating arm; 6 self-locking indexing pin; 7 right clamping block; 8 right eccentric cam clamp; 9 stop block; 10 left positioning block; 11 left clamping block; 12 bottom plate; 13 left eccentric cam clamp; 14 base. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments improved or adjusted by ordinary technicians in this field fall within the scope of protection of the present invention.

[0029] This embodiment provides a clamping tool for detecting the swing flexibility of a swing arm bearing, which is used in conjunction with a detection device. The detection device has a swing component 2, such as Figure 4 As shown, the swing assembly 2 includes a lever for inserting into the inner hole of the inner ring of the bearing to be tested of the rotating arm 1 to drive the inner ring of the bearing to be tested to swing; the clamping tool includes a linear guide 3, a right positioning block 4, a right rotating arm 5, a self-locking indexing pin 6, a right clamping block 7, a right eccentric cam clamp 8, a stopper 9, a left positioning block 10, a left clamping block 11, a bottom plate 12, a left eccentric cam clamp 13, and a base 14, as shown Figure 3 shown.

[0030] The lower end of the base 14 is connected to the detection equipment platform, and the upper end is connected to the bottom plate 12.

[0031] The base plate 12 is a flat plate, with a slide rail of the linear guide rail 3 fixed on one side of the upper surface. Three sliders are provided on the slide rail. A stopper 9 is fixed to the base plate 12 near one end of the linear guide rail 3 by bolts to limit the position of the slider on the linear guide rail 3.

[0032] like Figure 8As shown, the left positioning block 10 is a strip block, the bottom of which is provided with a through groove along the width direction, and the width of the groove is the same as the width of the slider of the linear guide 3. The left positioning block 10 is fixedly connected to the slider of the linear guide 3 and slides with the slider. The left positioning block 10 is arranged next to the stopper 9 and fits with the stopper 9 during operation. An arc depression is provided on the upper surface of one end thereof to avoid interference when the swing component 2 is inserted into the bearing of the swing arm 1. An arc boss is provided on the side of the arc depression away from the stopper 9 to cooperate with the left clamping block 11 to clamp one side ear of the swing arm 1. The diameter of the arc surface on the upper end of the arc boss is larger than the outer diameter of the inner ring of the bearing of the swing arm 1 to avoid interference with the swing of the inner ring of the bearing. A transverse threaded hole is provided on the side of the other end of the left positioning block 10, and its side wall away from the stopper 9 serves as a positioning surface to position the end face of one end of the swing arm 1.

[0033] like Figure 9 As shown, the left clamping block 11 is U-shaped with an opening downward, and the U-shaped opening matches the slider on the linear guide 3. The left clamping block 11 is fixed to another slider on the linear guide 3 by bolts. The left clamping block 11 is arranged next to the left positioning block 10, and an arc-shaped groove is provided on the upper surface of one end thereof. The inner diameter of the arc-shaped groove is larger than the outer diameter of the inner ring of the bearing of the swing arm 1 to avoid interference with the swing of the inner ring of the bearing, and cooperates with the arc-shaped boss on the left positioning block 10 to clamp one side of the ear of the swing arm 1. The end surface of the left clamping block 11 serves as a positioning surface for clamping the swing arm 1, and is used to position the side wall of the swing arm 1 close to the bearing; a transverse through hole is provided on the side surface of the other end of the left clamping block 11, and the transverse through hole is coaxial with the transverse threaded hole on the left positioning block 10.

[0034] The left eccentric cam clamp 13 is a standard part. It passes through the transverse through hole of the left clamping block 11 and is screwed into the transverse threaded hole on the left positioning block 10. It is used to make the left clamping block 11 quickly approach the left positioning block 10 and clamp the ear of the rotating arm 1.

[0035] like Figure 5 As shown, the right-side positioning block 4 is L-shaped as a whole, with its horizontal block located on the top of the vertical block. The right-side positioning block 4 is fixed on the third slider of the linear guide 3. An arc recess is provided on the upper surface of one end of the right-side positioning block 4 to avoid interference when the lever of the swing assembly 2 is inserted into the bearing. Its inner diameter is larger than the outer diameter of the inner ring of the bearing on the swing arm 1 to avoid interference with the swing of the inner ring of the bearing. At the same time, it is used to cooperate with the right-side clamping block 7 to clamp the ear piece on the other side of the swing arm 1. The end face of the right-side positioning block 4 is flush with the end face of the left-side clamping block 11 on the same side, and they serve together as the positioning surface for clamping the swing arm 1. A transverse threaded hole is provided at the other end.

[0036] like Figure 7As shown, the right clamping block 7 is a U-shaped block with an opening downward, which is fixed on the base plate 12 and located on the outside of the right positioning block 4. Its U-shaped opening matches the slider of the linear guide 3 to avoid the linear guide 3 and the slider. An arc groove is provided on the upper surface of one end of the right clamping block 7. The inner diameter of the arc groove is larger than the outer diameter of the inner ring of the bearing on the swing arm 1 to avoid interfering with the swing of the inner ring of the bearing. At the same time, it is used to cooperate with the arc depression of the right positioning block 4 to clamp the ear on the other side of the swing arm 1. A double ear structure is provided on the upper end face of the other end of the right clamping block 7. Both ears are provided with through holes and are coaxial. A transverse through hole is provided on the side surface of this end of the right clamping block 7, which is coaxial with the transverse threaded hole of the right positioning block 4.

[0037] like Figure 6 As shown, the main body of the right rotating arm 5 is a straight rod, one end of which is provided with a horizontal cylindrical structure, and the center of the cylindrical structure is provided with a threaded inner hole. The other end of the right rotating arm 5 is provided with a downward right-angle corner and a through hole at the end. The right-angle corner end is inserted into the double-ear structure at the end of the right clamping block 7 and clearance fits. The two are hinged by bolts, so that the right rotating arm 5 can rotate. The outer diameter of the cylindrical structure at the end of the right rotating arm 5 matches the arc groove at the end of the right clamping block 7, so that the cylindrical structure can fall into the arc groove. After falling, the straight rod part of the right rotating arm 5 fits with the upper end surface of the right clamping block 7. This position is the closed position. When the right rotating arm 5 is rotated to the vertical position, it is in the open state. In the closed state, the threaded inner hole of the cylindrical structure of the right rotating arm 5 is coaxial with the measuring position of the lever of the swing assembly 2, ensuring that the inner ring inner holes of the two bearings of the rotating arm 1 are on the same axis.

[0038] The self-locking indexing pin 6 is a standard part. The cylindrical inner hole of the pin is consistent with the inner hole of the inner ring of the bearing of the rotating arm 1. It is installed from the outside in the threaded inner hole of the cylindrical structure of the right rotating arm 5. The pin passes through the threaded inner hole and is inserted into the inner hole of the inner ring of the bearing on the ear piece on the other side of the rotating arm 1 to achieve the positioning of the rotating arm 1.

[0039] The right eccentric cam clamp 8 is a standard part. After passing through the transverse through hole of the right clamping block 7, it is screwed into the transverse threaded hole of the right positioning block 4 to make the right clamping block 7 close to the ear on the other side of the clamping arm 1 toward the right positioning block 4.

[0040] The method for using the clamping tool comprises the following steps:

[0041] Step 1: Adjust the swing assembly 2 to a measuring position close to the stopper 9.

[0042] Step 2, loosen the right eccentric cam clamp 8 and the left eccentric cam clamp 13; move the self-locking indexing pin 6 to retract the pin, and rotate the right rotating arm 5 to the open position.

[0043] Step 3, adjust the left positioning block 10 to the stop block 9, and adjust the positions of the left clamping block 11, the right positioning block 4, and the right clamping block 7 to facilitate the placement of the rotating arm 1.

[0044] Step 4: Use a straight rod with the same diameter as the inner hole of the bearing inner ring 1-2 to penetrate the inner holes of the two bearing inner rings 1-2, make the two bearings coaxial, and then remove the straight rod.

[0045] Step 5: Insert the bearing inner ring 1-2 on the ear piece on one side of the rotating arm 1 into the shifting rod of the swing assembly 2 until the end face of the rotating arm 1 is close to the left positioning block 10.

[0046] Step 6: Rotate the right rotating arm 5 to the closed position, and move the self-locking indexing pin 6 so that the pin extends and inserts into the other bearing inner hole of the rotating arm 1. At this time, the two bearing inner holes are coaxial.

[0047] Step 7: The side wall of the rotating arm 1 close to the bearing is pressed against the end faces of the left clamping block 11 and the right clamping block 7, and the right eccentric cam clamp 8 and the left eccentric cam clamp 13 are locked to complete the positioning and clamping of the rotating arm 1.

[0048] Step 8: Move the self-locking indexing pin 6 to retract the pin and rotate the right rotating arm 5 to the open position.

[0049] Step 9, start the measurement program, swing the swing component 2 to measure the bearing swing flexibility close to the side of the block 9, then the lever of the swing component 2 withdraws from the inner hole of the bearing inner ring 1-2 and moves to the inner hole of the other bearing inner ring 1-2 for measurement again.

[0050] Step 10: After the measurement is completed, loosen the right eccentric cam clamp 8 and the left eccentric cam clamp 13 and remove the rotating arm 1.

[0051] The above-described embodiments merely express the implementation methods of the present invention, but they should not be understood as limiting the scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A clamping tool for testing the swing flexibility of a rotating arm bearing, used in conjunction with a testing device, wherein the testing device has a swing component (2), and the swing component (2) includes a lever for inserting into the inner hole of the inner ring of the bearing to be tested of the rotating arm (1) to drive the inner ring of the bearing to swing; characterized in that: The clamping tool comprises a linear guide rail (3), a right positioning block (4), a right rotating arm (5), a self-locking indexing pin (6), a right clamping block (7), a right eccentric cam clamp (8), a stopper (9), a left positioning block (10), a left clamping block (11), a base plate (12), a left eccentric cam clamp (13), and a base (14); The lower end of the base (14) is connected to the detection equipment platform, and the upper end is connected to the bottom plate (12); The bottom plate (12) is fixed with a slide rail of the linear guide rail (3), and three sliders are provided on the slide rail. A stopper (9) is fixed on the bottom plate (12) near one end of the linear guide rail (3); The left positioning block (10) is fixedly connected to the slider of the linear guide rail (3) and slides with the slider. It is located next to the stop block (9) and fits with the stop block (9) during operation. A circular arc recess is provided on the upper surface of one end of the left positioning block (10) to avoid interference when the swing assembly (2) is inserted into the bearing of the rotating arm (1). An arc-shaped boss is provided on the side of the circular arc recess away from the stop block (9) to cooperate with the left clamping block (11) to clamp one side ear of the rotating arm (1). A transverse threaded hole is provided on the side of the other end of the left positioning block (10). The left clamping block (11) is fixed on another slider on the linear guide rail (3). The left clamping block (11) is arranged next to the left positioning block (10). An arc-shaped groove is provided on the upper surface of one end of the left clamping block (11), and the arc-shaped boss on the left positioning block (10) cooperates with the ear piece on one side of the clamping arm (1); a transverse through hole is provided on the side surface of the other end of the left clamping block (11), and the transverse through hole is coaxial with the transverse threaded hole on the left positioning block (10); The left eccentric cam clamp (13) passes through the transverse through hole of the left clamping block (11) and is screwed into the transverse threaded hole on the left positioning block (10), so as to enable the left clamping block (11) and the left positioning block (10) to clamp the ear piece of the rotating arm (1); The right positioning block (4) is fixed on the third slider of the linear guide rail (3), and an arc recess is provided on the upper surface of one end thereof, which is used to avoid interference when the lever of the swing assembly (2) is inserted into the bearing. The inner diameter of the right positioning block (4) is larger than the outer diameter of the inner ring of the bearing on the swing arm (1) to avoid interference with the swing of the inner ring of the bearing. At the same time, it is used to cooperate with the right clamping block (7) to clamp the ear piece on the other side of the swing arm (1), and a transverse threaded hole is provided on the other end thereof; The right clamping block (7) is fixed on the bottom plate (12) and is located outside the right positioning block (4). An arc groove is provided on the upper surface of one end of the right clamping block (7) for cooperating with the arc recess of the right positioning block (4) to clamp the ear piece on the other side of the rotating arm (1). A double ear piece structure is provided on the upper end surface of the other end of the right clamping block (7). Both ear pieces are provided with through holes and are coaxial. A transverse through hole is provided on the side surface of the end of the right clamping block (7), which is coaxial with the transverse threaded hole of the right positioning block (4). One end of the right rotating arm (5) is provided with a horizontal cylindrical structure, the center of the cylindrical structure is provided with a threaded inner hole, the other end is provided with a downward right-angle corner and a through hole is provided at the end, the right-angle corner end is inserted into the double-ear piece structure at the end of the right clamping block (7), the two are clearance-matched and hinged, the outer diameter of the cylindrical structure matches the arc groove at the end of the right clamping block (7), so that the cylindrical structure can fall into the arc groove, and after falling in, the threaded inner hole of the cylindrical structure of the right rotating arm (5) is coaxial with the measuring position of the lever of the swing assembly (2); The self-locking indexing pin (6) is installed from the outside in the threaded inner hole of the cylindrical structure of the right rotating arm (5), and the pin passes through the threaded inner hole and is inserted into the inner hole of the bearing inner ring on the ear piece on the other side of the rotating arm (1), thereby realizing the positioning of the rotating arm (1); The right eccentric cam clamp (8) is inserted into the transverse through hole of the right clamping block (7) and then screwed into the transverse threaded hole of the right positioning block (4), and is used for the right clamping block (7) and the right positioning block (4) to clamp the ear piece on the other side of the rotating arm (1).

2. A clamping tool for detecting the swing flexibility of a swing arm bearing according to claim 1, characterized in that: The inner diameter of the arc-shaped boss of the left positioning block (10), the inner diameter of the arc-shaped groove of the left clamping block (11), the inner diameter of the arc-shaped groove of the right clamping block (7), and the inner diameter of the arc-shaped depression of the right positioning block (4) are all larger than the outer diameter of the inner ring of the bearing of the rotating arm (1), thereby avoiding interference with the swing of the inner ring of the bearing.

3. A clamping tool for detecting the swing flexibility of a swing arm bearing according to claim 1, characterized in that: The cylindrical inner hole of the self-locking indexing pin (6) is consistent with the inner hole of the inner ring of the bearing of the rotating arm (1).

4. A clamping tool for detecting the swing flexibility of a swing arm bearing according to claim 1, characterized in that: The side wall of the left positioning block (10) on the side away from the stop block (9) positions one end face of the rotating arm (1); the end faces of one end of the circular arc groove provided on the left clamping block (11) and the right clamping block (7) are flush, and are used to position the side wall face of the rotating arm (1) close to the bearing side.

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