Gear anti-backlash tooling for institutional yaw passage

Abstract

The application discloses a gear gap-eliminating tool for an agency yaw passage, which is used for eliminating the transmission gap of a gear pair during forward and reverse rotation; the tool comprises a tool body arranged on a gear shaft, a first screw arranged on the tool body, a positioning pin arranged on the tool body and used for being connected with the gear pair, and a second screw, the end of which penetrates through a threaded hole on the positioning pin and is rotatably connected with the first screw. The application can directly adjust the position between the positioning pin and the first screw by rotating the second screw, so as to eliminate the transmission gap of the gear pair during forward and reverse rotation.

Description

Technical Field

[0001] This invention relates to the field of gear transmission technology, and more specifically to a gear backlash elimination tool for a mechanism yaw channel. Background Technology

[0002] Gear pairs are prone to backlash during forward and reverse rotation. Precision transmission devices (such as yaw channels) have extremely high requirements for the backlash between their gear pairs. Therefore, before the gear pairs of a precision transmission device can operate, it is necessary to eliminate the backlash between the gear pairs, which is simply referred to as "backlash elimination".

[0003] Existing methods for eliminating backlash in gear pairs have the following limitations: when installing multiple gears in a gear pair, at least several people are required to operate it together; one person operates one set of transmission gears, and two people are required to operate two sets of gears simultaneously. Furthermore, since it is a manual operation, there is a possibility that one set of transmission gears can be successfully misaligned while the other set fails to be misaligned. Summary of the Invention

[0004] In order to solve or partially solve the problems existing in the related technologies, the present invention provides a gear backlash elimination tooling for the yaw channel of a mechanism, which can directly adjust the position between the positioning pin and the first screw by rotating the second screw, thereby adjusting the angle between the gear pairs.

[0005] This invention provides a gear backlash elimination fixture for a mechanism's yaw channel, the fixture being used to eliminate transmission backlash in the gear pair during forward and reverse rotation; the fixture includes:

[0006] First gear shaft;

[0007] The tooling body is mounted on the first gear shaft;

[0008] The first screw is disposed on the tooling body;

[0009] A locating pin is provided on the tooling body for connecting with the gears of the gear pair;

[0010] The second screw has its end passing through a threaded hole in the locating pin and is rotatably connected to the first screw.

[0011] Optionally, the gear pair includes a split gear and a gear meshing with the split gear.

[0012] Optionally, the split gear includes a first split gear, a second split gear, a second gear shaft, and an elastic member; the first split gear is fixedly connected to the second gear shaft; the second split gear is rotatably mounted on the second gear shaft; the elastic member is disposed between the first split gear and the second split gear, and during installation, the elastic member is pre-loaded with a pre-tightening torque, so that the first split gear and / or the second split gear contact its meshing gear, thereby achieving backlash-free transmission of the gear pair.

[0013] Optionally, the elastic member is a C-type spring or a wound spring wire.

[0014] Optionally, the tooling further includes:

[0015] The third screw matches the countersunk hole on the side of the tooling body;

[0016] The tooling body is sleeved on the first gear shaft and fixedly connected to the first gear shaft by the third screw.

[0017] Optionally, the number of countersunk holes is at least one, and the number of third screws is the same as the number of countersunk holes.

[0018] Optionally, the tooling body is an annular structure with an opening.

[0019] Optionally, the inner wall of the annular structure is in contact with the first gear shaft.

[0020] Optionally, the tooling further includes:

[0021] The nut, wherein the end of the first screw passes through the tooling body and is disposed within the nut.

[0022] Optionally, the upper and / or lower end faces of the tooling body are provided with a plurality of positioning holes that match the gears of the gear pair.

[0023] The technical solution provided by this invention may include the following beneficial effects:

[0024] (1) The present invention can apply torque by rotating the second screw, which saves effort.

[0025] (2) This invention can be operated by a single person and is simple to operate.

[0026] (3) This invention ensures the accuracy of misaligned teeth and prevents failure.

[0027] (4) The present invention can significantly improve assembly efficiency.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the gear backlash elimination tooling used in the yaw channel of the mechanism in an embodiment of the present invention;

[0031] Figure 2a This is a schematic diagram of the side structure of the split gear in an embodiment of the present invention;

[0032] Figure 2b This is a schematic diagram of the front structure of the split gear in an embodiment of the present invention;

[0033] Figure 2c This is a schematic diagram of the C-type spring in the split gear in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram illustrating the working principle of the backlash elimination tooling in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the gear backlash elimination tool in application according to an embodiment of the present invention. Detailed Implementation

[0036] Embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be more thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0038] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various gear shafts, this information should not be limited to these terms. These terms are only used to distinguish gear shafts of the same type from each other. For example, without departing from the scope of this invention, a first gear shaft may also be referred to as a second gear shaft, and similarly, a second gear shaft may also be referred to as a first gear shaft. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] This embodiment discloses a gear backlash elimination tool for the yaw channel of a mechanism, which can eliminate the transmission backlash of the gear pair in the yaw channel in a timely and effective manner during forward and reverse rotation, ensuring the normal operation of the gear pair in the yaw channel.

[0041] Please see Figure 1 and Figure 4 The tooling includes: a first gear shaft 300; a tooling body 101, sleeved on the first gear shaft 300; a first screw 102, disposed on the upper end face of the tooling body 101; a locating pin 103, disposed on the tooling body 101 by means of a second screw 104 and the first screw 102, for fixed connection with the gear of the gear pair; and a second screw 104, the end of which passes through a threaded hole on the locating pin 103 and is rotatably connected to the first screw 102; the position between the locating pin 103 and the first screw 102 is adjusted directly by rotating the second screw 104, thereby eliminating the transmission backlash of the gear pair during forward and reverse rotation.

[0042] In this embodiment, the gear pair includes a split gear and a gear 204 meshing with it; the positioning pin 103 can be fixedly connected to the split gear of the gear pair. By moving the split gear through the positioning pin 103, the position between the positioning pin 103 and the split gear can be adjusted, thereby eliminating the transmission backlash of the gear pair during forward and reverse rotation.

[0043] Please see Figure 2a , Figure 2b and Figure 3The split gear includes a first split gear 201, a second split gear 202, a second gear shaft 205, and an elastic member 203; the first split gear 201 is fixedly connected to the second gear shaft 205; the second split gear 202 is rotatably disposed on the second gear shaft 205; the elastic member 203 is disposed between the first split gear 201 and the second split gear 202, and the elastic member 203 is pre-loaded with a pre-tightening torque during installation, so that the first split gear 201 and / or the second split gear 202 are in close contact with the gear 204 they mesh with, thereby realizing backlash-free transmission of the gear pair. Rotating the second screw 104 causes the positioning pin 103 to reciprocate along the axial direction of the second screw 104. When it is close to the first screw 102, the second split gear 202 can move away from / close to the gear 204. When it is far away from the first screw 102, the second split gear 202 can move closer to / away from the gear 204. This adjusts the position between the split gear and the gear 204, thereby eliminating the transmission backlash of the gear pair during forward and reverse rotation.

[0044] In this embodiment, the elastic member 203 is a C-shaped spring or a wound spring wire.

[0045] Please see Figure 4 The tooling further includes a third screw 105, which matches the countersunk hole 106 opened on the side of the tooling body 101; the tooling body 101 is sleeved on the first gear shaft 300 and is fixedly connected to the first gear shaft 300 by the third screw 105.

[0046] In this embodiment, the number of countersunk holes 106 is at least one. At least one countersunk hole 106 is evenly arranged around the tooling body 101.

[0047] In this embodiment, the number of the third screws 105 is at least one. Preferably, the number of countersunk holes 106 is the same as the number of third screws 105. All the third screws 105 are evenly arranged around the tooling body 101, and the tooling body 101 is more stably fixed on the first gear shaft 300 by the evenly arranged multiple third screws 105.

[0048] In this embodiment, the tooling body 101 is an annular structure with an opening 107. The first gear shaft 300 can pass through the opening 107 and be disposed inside the tooling body 101. Compared with a tooling body without an opening, the tooling body 101 in this embodiment is simpler and faster to operate.

[0049] In this embodiment, the inner wall of the annular structure is in contact with the outer wall of the first gear shaft 300. The tooling body 101 can be loosely fitted onto the first gear shaft 300. Since the inner wall of the annular structure is in contact with the outer wall of the first gear shaft 300, the stability between the tooling body 101 and the first gear shaft 300 can be ensured when eliminating the transmission backlash during the forward and reverse rotation of the gear pair.

[0050] In this embodiment, the tooling further includes a nut 108, wherein the end of the first screw 102 passes through the tooling body 101 and is disposed within the nut 108; the nut 108 can further fix the first screw 102 to the tooling body 101.

[0051] In this embodiment, the upper end face and / or lower end face of the tooling body 101 are provided with a plurality of positioning holes 108 that match the gears of the gear pair, and the tooling body 101 is fixedly connected to the gears of the gear pair through the plurality of positioning holes 108.

[0052] In this embodiment, the first screw, the second screw, and the third screw are all M2.5 screws, and their corresponding holes are matching M2.5 screw holes.

[0053] Please see Figure 3 , Figure 3 This is a schematic diagram illustrating the working principle of the backlash elimination fixture in this embodiment. Specifically, this embodiment utilizes the principle of a crank-slider mechanism for backlash elimination. For a set of transmission gears, the moving point A is hinged to one split gear, and point B is hinged to another split gear. Changing the length of AB changes the angle β, thus achieving tooth misalignment between the two gears. The other set operates in the same way. For the two motors in the yaw channel, both sets of transmission gears need to operate simultaneously to complete the tooth misalignment.

[0054] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of the present invention are included within the scope of protection of the present invention.

Claims

1. A gear backlash elimination tooling for a mechanism yaw channel, characterized in that, The tooling is used to eliminate the transmission backlash of the gear pair during forward and reverse rotation; the tooling includes: First gear shaft; The tooling body is mounted on the first gear shaft; The first screw is disposed on the tooling body; A locating pin is provided on the tooling body for connecting with the gears of the gear pair; The second screw has its end passing through a threaded hole in the locating pin and is rotatably connected to the first screw; the gear pair includes a split gear and a gear meshing with the split gear; the split gear includes a first split gear, a second split gear, a second gear shaft, and an elastic member; the first split gear is fixedly connected to the second gear shaft; the second split gear is rotatably mounted on the second gear shaft; the elastic member is disposed between the first split gear and the second split gear, and during installation, the elastic member is pre-loaded with a pre-tightening torque, so that the first split gear and / or the second split gear contacts its meshing gear, thereby achieving backlash-free transmission of the gear pair.

2. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 1, characterized in that, The elastic component is a C-type spring or a wound spring wire.

3. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 1, characterized in that, The tooling also includes: The third screw matches the countersunk hole on the side of the tooling body; The tooling body is sleeved on the first gear shaft and fixedly connected to the first gear shaft by the third screw.

4. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 3, characterized in that, The number of countersunk holes is at least one, and the number of third screws is the same as the number of countersunk holes.

5. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 1, characterized in that, The tooling body is a ring structure with an opening.

6. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 5, characterized in that, The inner wall of the annular structure is in contact with the first gear shaft.

7. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 1, characterized in that, The tooling also includes: The nut, wherein the end of the first screw passes through the tooling body and is disposed within the nut.

8. The gear backlash elimination tooling for the yaw channel of a mechanism as described in claim 1, characterized in that, The upper and / or lower end faces of the tooling body are provided with a number of positioning holes that match the gears of the gear pair.

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