A servo, mounting device and mounting method

Abstract

The application discloses a follower, belongs to the field of aerospace and weapon technology, and through the setting of a positioning mark, the rotating angle of an eccentric end cover can be directly observed, so that the eccentric end cover on the other side is rotated by the same angle, thereby effectively ensuring the coaxiality of the two eccentric end covers. The mounting device of the follower provided by the application can ensure the coaxiality of the two eccentric end covers through the cooperation of a dial and the positioning mark, the positioning method is simple and easy to operate, and the positioning precision is high. The mounting method of the eccentric end cover of the follower provided by the application is a positioning and adjusting method of the eccentric end cover of the follower, which is developed according to the coaxiality mounting requirement of the arm shaft of the follower, and is used for the batch production project of the follower. The method solves the problem that the coaxiality of the arm shaft of the follower and the inner hole of the shell cannot meet the mounting requirement, and influences the performance of the follower. The application has remarkable effects and is suitable for wide popularization.

Description

Technical Field

[0001] This invention relates to the fields of aerospace and weapons technology, and in particular to a servo, mounting device, and mounting method. Background Technology

[0002] Followers are widely used in the steering mechanisms of special vehicles. To address the required clearance between the teeth of the follower arm shaft and piston rod, the eccentric angle of the eccentric end caps at both ends is used to ensure this clearance, and these eccentric angles must be consistent. However, because the eccentric end caps lack circumferential positioning, their adjustment angle can only be determined by sensing the rotational friction of the arm shaft. This results in non-linear contact between the teeth of the arm shaft and piston rod, affecting the transmission quality of the piston rod and reducing tooth life.

[0003] The tooth profile clearance between the follower arm shaft and the piston rod is ensured by the eccentric angle of the eccentric end caps at both ends, and the eccentric angles are required to be consistent. The eccentricity of the eccentric end caps is 1mm. The two eccentric end caps are installed at both ends of the arm shaft and installed in the inner hole of the housing, so that the arm shaft can be adjusted up and down by 1mm, thereby controlling the tooth profile clearance. Because the eccentric end caps do not have circumferential positioning conditions, the adjustment angle of the eccentric end caps can only be determined by feeling the rotational friction of the arm shaft. This causes the teeth of the arm shaft and the piston rod to not make linear contact, which affects the transmission quality of the piston rod and causes a decrease in the life of the teeth.

[0004] Currently, there is no good process to solve the above problems, which has become a bottleneck for mass production. Therefore, it is necessary to develop a follower, installation device and installation method for eccentric end cap positioning adjustment. Summary of the Invention

[0005] To address the aforementioned deficiencies, the present invention provides a follower, an installation device, and an installation method to solve the problem that the coaxiality of the follower arm shaft cannot meet the installation requirements, thus affecting the follower's performance.

[0006] This invention provides a follower, comprising:

[0007] The housing includes a first connecting part and a second connecting part integrally formed with the first connecting part. The first connecting part is perpendicular to the second connecting part and communicates with the second connecting part. Positioning marks are provided on both end faces of the first connecting part.

[0008] The piston rod is slidably connected to the second connecting part and is disposed through the second connecting part;

[0009] An arm shaft is rotatably connected to the first connecting part and extends through the first connecting part. The arm shaft is connected to the piston rod and is used to drive the piston rod to move.

[0010] An eccentric end cap is connected to both the arm shaft and the first connecting part, and the positioning mark corresponds one-to-one with the eccentric end cap.

[0011] Preferably, both the first connecting part and the second connecting part are tubular structures; the eccentric end cap is provided with a connecting hole adapted to the arm shaft, and there is a gap between the connecting hole and the rotation shaft of the first connecting part; the eccentric end cap is provided with a plurality of first mounting holes along the circumference of the connecting hole.

[0012] Preferably, the outer surface of any one of the eccentric end caps is provided with external threads, the inner surface of the first connecting part is provided with internal threads, and any one of the eccentric end caps is threadedly connected to the first connecting part; there are two eccentric end caps, which are respectively disposed on both sides of the first connecting part.

[0013] Preferably, the positioning mark is a triangle with its axis of symmetry passing through the rotation axis of the first connecting part; or the positioning mark is an arrow pointing to the rotation axis of the first connecting part.

[0014] A mounting device for a follower, applied to a follower as described in any of the preceding claims, comprising:

[0015] An assembly wrench is detachably connected to the eccentric end cap via fasteners.

[0016] A dial is disposed between the assembly wrench and the eccentric end cap. The fastener passes through the assembly wrench, the dial, and the eccentric end cap in sequence. The dial is provided with a second mounting hole that matches the first mounting hole.

[0017] Preferably, the assembly wrench includes:

[0018] The mounting part is detachably connected to the eccentric end cap, and the mounting part is provided with a positioning hole that matches the first mounting hole;

[0019] An extension rod is integrally formed with the mounting part, and two extension rods are provided and symmetrically arranged on both sides of the mounting part.

[0020] Preferably, the outer diameter of the dial is equal to the inner diameter of the first connecting part; the outer diameter of the mounting part is smaller than the outer diameter of the dial.

[0021] Preferably, the dial is further provided with a connecting platform, and the connecting platform is provided with several slots in the circumferential direction.

[0022] Preferably, the assembly wrench includes:

[0023] A connector is connected to the connecting platform. The connector has several protrusions that are adapted to the slots. The connector has a circular ring structure.

[0024] A handheld component is rotatably connected to the connecting component, and two handles are symmetrically provided on the handheld component along the connecting component;

[0025] A driver, connected to the handheld component and connected to the connector via a speed-changing component, is used to drive the connector to rotate, the speed-changing component being used to change the direction of the force output by the driver.

[0026] A method for installing an eccentric end cap on a follower, applicable to a follower and a follower mounting device as described above, comprising:

[0027] Step 1: Insert one of the eccentric end caps into one side of the housing;

[0028] Step 2: Place the dial with the reading facing away from the housing, and then fix the fastener through the positioning hole and the second mounting hole in sequence to the first mounting hole;

[0029] Step 3: Rotate the assembly wrench to adjust the eccentric end cap into place, record the scale value R on the dial indicated by the positioning mark on the housing, and remove the fastener, the assembly wrench, and the dial.

[0030] Step 4: Insert the eccentric end cap at the other end into the other side of the housing;

[0031] Step 5: Position the dial with the reading facing away from the housing, and then secure the fastener by passing it through the positioning hole and the second mounting hole in sequence to the first mounting hole.

[0032] Step 6: Rotate the assembly wrench and observe the scale value on the dial. Stop when the value of R is reached. At this time, the two eccentric end caps are adjusted into place.

[0033] Step 7: After removing the fasteners, the assembly wrench, and the dial, the eccentric end caps at both ends are adjusted.

[0034] As can be seen from the above solution, the follower provided by this invention, through the setting of positioning marks, allows for intuitive observation of the rotation angle of the eccentric end cap, thereby rotating the other eccentric end cap by the same angle to effectively ensure the coaxiality of the two eccentric end caps. The follower installation device provided by this invention, through the combined use of a dial and positioning marks, can ensure the coaxiality of the two eccentric end caps. The positioning method is simple, easy to operate, and has high positioning accuracy. The eccentric end cap installation method of this invention is a follower eccentric end cap positioning adjustment method developed to meet the coaxiality installation requirements of the follower arm shaft, and is used in mass production projects of followers. This invention solves the problem of the current technology where the coaxiality of the follower arm shaft cannot meet the installation requirements, affecting the performance of the follower. Its effect is significant and suitable for widespread application. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This invention provides a schematic diagram of the structure of a follower and a mounting device for the follower;

[0037] Figure 2 A schematic diagram of the structure of a follower provided by the present invention;

[0038] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0039] Figure 4 For along Figure 2 Cross-sectional view of the DD line;

[0040] Figure 5 For along Figure 2 Cross-sectional view of the CC line;

[0041] Figure 6 A schematic diagram of the structure of another mounting device for a follower provided by the present invention;

[0042] Figure 7 For along Figure 6 Cross-sectional view of line AA in the middle;

[0043] Figure 8 An exploded structural diagram of another servo mounting device provided by the present invention.

[0044] Figure 1-8 middle:

[0045] 1. Housing; 2. Piston rod; 3. Arm shaft; 4. Eccentric end cap; 5. Assembly wrench; 6. Dial; 7. Fastener; 11. First connecting part; 12. Second connecting part; 41. Connecting hole; 42. First mounting hole; 51. Mounting part; 52. Extension rod; 53. Connector; 54. Handheld part; 55. Driver; 56. Gearbox; 61. Second mounting hole; 62. Connecting platform; 63. Slot; 111. End face; 112. Positioning mark; 511. Positioning hole; 531. Snap protrusion; 541. Handle. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please refer to the following: Figures 1 to 5 The present invention will now describe a specific embodiment of a follower provided by the present invention. This follower includes a housing 1, a piston rod 2, an arm shaft 3, and an eccentric end cap 4. The housing 1 includes a first connecting portion 11 and a second connecting portion 12 integrally formed with the first connecting portion 11. The first connecting portion 11 is perpendicular to and communicates with the second connecting portion 12. Positioning marks 112 are provided on both end faces 111 of the first connecting portion 11. The piston rod 2 is slidably connected to and passes through the second connecting portion 12. The arm shaft 3 is rotatably connected to and passes through the first connecting portion 11. The arm shaft 3 is connected to the piston rod 2 and is used to drive the piston rod 2 to move. The eccentric end cap 4 is connected to both the arm shaft 3 and the first connecting portion 11, and the positioning marks 112 correspond one-to-one with the eccentric end cap 4.

[0048] For ease of explanation, please refer to Figure 1 A rectangular coordinate system is established with any point in space as the origin, the setting direction of piston rod 2 as the Z-axis, the setting direction of arm axis 3 as the X-axis, and the straight line direction that is perpendicular to both the X-axis and Z-axis as the Y-axis. The XY plane is a horizontal plane, the direction indicated on the horizontal plane is the horizontal direction, and the direction indicated by the Z-axis is the vertical direction.

[0049] In this embodiment, the positioning mark 112 is a triangle with its axis of symmetry passing through the rotation axis of the first connecting part 11; or the positioning mark 112 is an arrow pointing to the rotation axis of the first connecting part 11. The positioning mark 112 is used to monitor the rotation angle of the eccentric end cover 4. During installation, one side of the eccentric end cover 4 is connected to the first connecting part 11, and the rotation angle of the eccentric end cover 4 relative to the positioning mark 112 is recorded. When installing the other side of the eccentric end cover 4, the eccentric end cover 4 is rotated by the same angle. Here, anything that can achieve the above-mentioned performance function of the positioning mark 112 is within the scope of protection of this application.

[0050] Compared with existing technologies, this type of follower, through the setting of positioning mark 112, allows for direct observation of the rotation angle of the eccentric end cover 4, thereby rotating the other eccentric end cover 4 by the same angle. This effectively ensures the coaxiality of the two eccentric end covers 4, resulting in a simple, easy-to-operate, and highly accurate positioning method. This invention solves the problem in existing technologies where the coaxiality of the follower arm shaft 3 fails to meet installation requirements, affecting follower performance. Its effectiveness is significant and it is suitable for widespread application.

[0051] In this embodiment, both the first connecting part 11 and the second connecting part 12 are tubular structures; the eccentric end cap 4 is provided with a connecting hole 41 adapted to the arm shaft 3, and there is a gap between the connecting hole 41 and the rotation shaft of the first connecting part 11, which can be 1mm; the eccentric end cap 4 is provided with a plurality of first mounting holes 42 along the circumference of the connecting hole 41. The outer surface of any eccentric end cap 4 is provided with an external thread, and the inner surface of the first connecting part 11 is provided with an internal thread, and any eccentric end cap 4 is threadedly connected to the first connecting part 11; there are two eccentric end caps 4, which are respectively disposed on both sides of the first connecting part 11.

[0052] Please refer to the following: Figures 1 to 5 The following describes a specific embodiment of the mounting device for a follower provided by the present invention. This mounting device, applied to the follower described above, includes an assembly wrench 5 and a dial 6. The assembly wrench 5 is detachably connected to an eccentric end cap 4 via a fastener 7. The dial 6 is disposed between the assembly wrench 5 and the eccentric end cap 4. The fastener 7 passes through the assembly wrench 5, the dial 6, and connects to the eccentric end cap 4 in sequence. The dial 6 has a second mounting hole 61 that matches the first mounting hole 42. The fastener 7 can be an M5 screw, the first mounting hole 42 is a threaded hole that matches the screw, and the second mounting hole 61 is a through hole, corresponding one-to-one with the first mounting hole 42.

[0053] In this embodiment, the assembly wrench 5 includes a mounting part 51 and an extension rod 52. The mounting part 51 is detachably connected to the eccentric end cap 4. The mounting part 51 has a positioning hole 511 that matches the first mounting hole 42. The mounting part 51 has a circular structure. The extension rod 52 is integrally formed with the mounting part 51. There are two extension rods 52, which are symmetrically arranged on both sides of the mounting part 51. The extension rod 52 is a round rod. The assembly wrench 5 is adapted to the structural dimensions of the eccentric end cap 4 and the housing 1. The positioning hole 511 can be a φ5 hole. The fastener 7 passes through the positioning hole 511 and is inserted into the first mounting hole 42 of the eccentric end cap 4. By applying force to the extension rod 52, the circumferential rotation adjustment of the eccentric end cap 4 is achieved.

[0054] In this embodiment, the outer diameter of the dial 6 is equal to the inner diameter of the first connecting part 11; the outer diameter of the mounting part 51 is smaller than the outer diameter of the dial 6. The dial 6 is adapted to the structure of the housing 1 and the arm shaft 3, and angle lines are engraved on it at 1-degree intervals. The center distance between the two second mounting holes 61 is 84mm.

[0055] Please refer to the following: Figures 1 to 5 The present invention will now describe a specific embodiment of a method for installing the eccentric end cap 4 of a follower. This method for installing the eccentric end cap 4 of a follower is applied to the above-described follower and follower installation device, and includes:

[0056] S1. Insert an eccentric end cap 4 into one side of the housing 1;

[0057] S2. The reading on the dial 6 is placed facing away from the housing 1, and the fastener 7 is fixedly connected to the first mounting hole 42 by passing through the positioning hole 511 and the second mounting hole 61 in sequence.

[0058] S3. After turning the assembly wrench 5 and adjusting the eccentric end cover 4 to the correct position, record the scale value R on the dial 6 indicated by the positioning mark 112 on the housing 1, and remove the fastener 7, assembly wrench 5 and dial 6.

[0059] S4. Insert the other eccentric end cap 4 into the other side of the housing 1;

[0060] S5. The reading on the dial 6 is placed facing away from the housing 1. The fastener 7 is then fixedly connected to the first mounting hole 42 by passing through the positioning hole 511 and the second mounting hole 61 in sequence.

[0061] S6. Turn the assembly wrench 5 and observe the scale value on the dial 6. Stop when the R value is adjusted. At this time, the two eccentric end caps 4 are adjusted into place.

[0062] S7. After removing the fastener 7, assembling the wrench 5 and dial 6, the eccentric end caps 4 at both ends are adjusted.

[0063] The installation method of the eccentric end cover 4 of this follower is a positioning and adjustment method of the eccentric end cover 4 of the follower. By designing an assembly wrench 5, a dial 6, and adding positioning marks 112 to the housing 1, the problem of the eccentric end cover 4 being out of sync can be solved, the installation requirements of the coaxiality of the arm shaft 3 can be met, which is conducive to the mass production of the follower, easy to install, high installation accuracy, and the follower produced has better performance.

[0064] Please refer to the following: Figures 1 to 8 As another embodiment of the present invention, the structure of the mounting device for this follower is basically the same as that in the above embodiment, except that the dial 6 is also provided with a connecting platform 62, and the connecting platform 62 is provided with a plurality of slots 63 circumferentially, the slots 63 being arc-shaped grooves. The assembly wrench 5 includes a connector 53, a handheld part 54, and a driver 55, wherein the connector 53 is connected to the connecting platform 62, and the connector 53 is provided with a plurality of protrusions 531 that are adapted to the slots 63. The connector 53 is a ring-shaped structure, and during installation, the arm shaft 3 can pass through the ring-shaped structure to avoid interference; the handheld part 54 is rotatably connected to the connector 53, and the handheld part 54 is provided with two handles 541 symmetrically along the connector 53; the driver 55 is connected to the handheld part 54 and is connected to the connector 53 through a speed changer 56, and is used to drive the connector 53 to rotate, the speed changer 56 being used to change the direction of the force output by the driver 55. The driver 55 can be a motor. The protrusion 531 is engaged with the slot 63. The operator holds the handle 541 and presses the connector 53 and the dial 6 together with the hand-held part 54. The driver 55 is started. The driver 55 rotates and drives the dial 6 to rotate. The dial 6 is fixedly connected to the eccentric end cover 4. The eccentric end cover 4 rotates accordingly, realizing the convenient installation of the eccentric end cover 4.

[0065] In this embodiment, the transmission component 56 can be a gear. The outer circumferential surface of the connecting member 53 is provided with several protruding teeth that mesh with the transmission component 56. The driver 55 is fixedly connected to the transmission component 56, and the transmission component 56 meshes with the connecting member 53, driving the connecting member 53 to rotate. A cavity is provided on the handheld member 54, the connecting member 53 passes through the handheld member 54, the protruding teeth are disposed within the cavity, the transmission component 56 is disposed within the cavity, and the output shaft of the driver 55 extends into the cavity and connects to the transmission component 56. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Content not described in detail in the embodiments of this invention belongs to the prior art known to those skilled in the art.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mounting arrangement for a follower, the mounting arrangement being for application to a follower, the follower comprising: The housing (1) comprises a first connecting part (11) and a second connecting part (12) integrally formed with the first connecting part (11), the first connecting part (11) is vertically arranged with the second connecting part (12) and communicates with the second connecting part (12), and end faces (111) on both sides of the first connecting part (11) are each provided with a positioning mark (112); The piston rod (2) is slidably connected with the second connecting part (12) and penetrates the second connecting part (12); The arm shaft (3) is rotatably connected with the first connecting part (11) and penetrates the first connecting part (11), the arm shaft (3) is connected with the piston rod (2) and is used for driving the piston rod (2) to move; The eccentric end cover (4) is connected with the arm shaft (3) and the first connecting part (11) at the same time, and the positioning mark (112) corresponds to the eccentric end cover (4) one by one; The first connecting part (11) and the second connecting part (12) are both tubular structures; the eccentric end cover (4) is provided with a connecting hole (41) matched with the arm shaft (3), a gap is arranged between the connecting hole (41) and the rotation shaft of the first connecting part (11), and a plurality of first mounting holes (42) are arranged on the eccentric end cover (4) along the circumference of the connecting hole (41); The outer surface of any one of the eccentric end covers (4) is provided with external threads, the inner surface of the first connecting part (11) is provided with internal threads, any one of the eccentric end covers (4) is threadedly connected with the first connecting part (11), and the eccentric end cover (4) is provided with two and arranged on both sides of the first connecting part (11) respectively; The shape of the positioning mark (112) is a triangle with a symmetric axis passing through the rotation shaft of the first connecting part (11), or the shape of the positioning mark (112) is an arrow pointing to the rotation shaft of the first connecting part (11); The mounting device of the follower comprises: The assembly wrench (5) is detachably connected with the eccentric end cover (4) through a fastener (7); The dial (6) is arranged between the assembly wrench (5) and the eccentric end cover (4), the fastener (7) penetrates the assembly wrench (5), the dial (6) and the eccentric end cover (4) in sequence and is connected, and the dial (6) is provided with a second mounting hole (61) matched with the first mounting hole (42); The assembly wrench (5) comprises: The mounting part (51) is detachably connected with the eccentric end cover (4), and the mounting part (51) is provided with a positioning hole (511) matched with the first mounting hole (42); The extension rod (52) is integrally formed with the mounting part (51), and the extension rod (52) is provided with two and symmetrically arranged on both sides of the mounting part (51); The dial (6) is further provided with a connecting table (62), and a plurality of clamping grooves (63) are circumferentially arranged on the connecting table (62).

2. A mounting arrangement for a follower according to claim 1, characterised in that The outer diameter of the dial (6) is equal to the inner diameter of the first connecting part (11), and the outer diameter of the mounting part (51) is smaller than the outer diameter of the dial (6).

3. A mounting arrangement for a follower according to claim 2, characterised in that The assembly wrench (5) comprises: a connecting piece (53) connected with the connecting table (62), wherein a plurality of clamping protrusions (531) adapted to the clamping grooves (63) are arranged on the connecting piece (53), and the connecting piece (53) has a circular ring structure; a handheld piece (54) rotationally connected with the connecting piece (53), wherein two handles (541) are symmetrically arranged on the handheld piece (54) along the connecting piece (53); a driver (55) connected with the handheld piece (54) and connected with the connecting piece (53) through a speed-changing piece (56), wherein the driver (55) is used for driving the connecting piece (53) to rotate, and the speed-changing piece (56) is used for changing the direction of the force output by the driver (55).

4. A method of mounting an eccentric end cover of a follower, applied to the mounting device of the follower according to any one of claims 1 to 3, characterized in that, Comprise: Step 1, insert one eccentric end cover (4) into one side of the shell (1); Step 2, place the indication on the dial (6) away from the side of the shell (1), and sequentially pass the fastener (7) through the positioning hole (511) and the second mounting hole (61) and the first mounting hole (42) to be fixedly connected; Step 3, rotate the assembly wrench (5), after adjusting the eccentric end cover (4) to the position, record the scale value R on the dial (6) indicated by the positioning mark (112) on the shell (1), and then remove the fastener (7), the assembly wrench (5) and the dial (6); Step 4, insert the other eccentric end cover (4) into the other side of the shell (1); Step 5, place the indication on the dial (6) away from the side of the shell (1), and sequentially pass the fastener (7) through the positioning hole (511) and the second mounting hole (61) and the first mounting hole (42) to be fixedly connected; Step 6, rotate the assembly wrench (5), and observe the scale value on the dial (6), and stop when the value R is adjusted to the position, at this time, the two eccentric end covers (4) are adjusted to the position; Step 7, after removing the fastener (7), the assembly wrench (5) and the dial (6), the adjustment of the two eccentric end covers (4) is completed.

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