Press-fitting synchronizing mechanism for gear ring and gear shaft

Abstract

The utility model relates to a gear ring and gear shaft press-fitting synchronizing mechanism which comprises a clamping assembly, the clamping assembly comprises two clamp unit pieces and a first driving air cylinder, the first driving air cylinder drives the two clamp unit pieces to have clamping positions for clamping a gear ring or a gear shaft, and a second driving air cylinder drives the clamping assembly to slide along a linear guide rail. Each clamp unit piece comprises a first clamping part located at the upper end of the clamp unit piece and a second clamping part located at the lower end of the clamp unit piece, and when the gear ring is clamped, the distance between the second clamping parts of the two clamp unit pieces is the diameter b of the gear ring. When the gear shaft is clamped, the distance between the first clamping parts of the two clamp unit pieces is the diameter a of the gear shaft, the distance between the second clamping parts of the two clamp unit pieces is b1, and b1 is larger than or equal to b; a is smaller than b, and the first clamping part and the second clamping part are combined to form a step shape; during use, the linear guide rail ensures the movement precision and stability of the clamping assembly, and the stepped clamp unit pieces do not interfere with a gear ring while assisting in positioning the gear shaft.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic assembly technical field, concretely relates to a kind of pressing and mounting synchronous mechanism of gear ring gear shaft. BACKGROUND

[0002] When the workpiece composed of gear ring and gear shaft is pressed and mounted, it is usually necessary to first place the gear ring in the pressing station by the manipulator, then clamp the gear shaft to a certain height above the gear ring, align the center of the gear shaft with the center of the inner hole of the gear ring, and then press the gear shaft into the inner hole of the gear ring by the pressing head of the pressing machine to form a tight fit. During the pressing process, the pressing depth is small at the beginning, the resistance of the pressing machine is small, and the speed of the pressing head in pressing the gear shaft is relatively fast. During the pressing process, the gear shaft above is prone to tilting or overturning under stress, so the clamp needs to be positioned accurately and stably during the pressing of the gear shaft to improve the assembly success rate. However, in the prior art, the clamp usually only provides clamping action and may shake during the pressing process with the pressing head of the pressing machine, making it difficult to press accurately and stably. Moreover, the clamp clamping the gear shaft may interfere with the gear ring below during the pressing process of the gear shaft and the gear ring, affecting the pressing effect. SUMMARY

[0003] The utility model aims to develop a kind of pressing and mounting synchronous mechanism of gear ring gear shaft to solve the problem of accurate and stable positioning of gear ring and gear shaft during pressing in the prior art, and improve the stability and success rate of pressing.

[0004] The utility model realizes the following technical scheme:

[0005] A kind of pressing and mounting synchronous mechanism of gear ring gear shaft, including clamping assembly, the clamping assembly includes two clamp unit elements and first drive cylinder, the first drive cylinder drives the relative displacement of two clamp unit elements and makes two clamp unit elements have the clamping position of clamping gear ring or gear shaft, it also includes second drive cylinder and linear guide rail, the second drive cylinder drives clamping assembly to slide along linear guide rail;

[0006] The clamp unit element includes a first clamping portion at its upper end and a second clamping portion at its lower end.

[0007] When the clamping assembly clamps the gear ring, the distance between the second clamping portions of the two clamp unit elements is the diameter b of the gear ring.

[0008] When the clamping assembly clamps the gear shaft, the distance between the first clamping portions of the two clamp unit elements is the diameter a of the gear shaft, and the distance between the second clamping portions of the two clamp unit elements is b1, b1≥b.

[0009] And a<b, the first clamping portion and the second clamping portion are combined in a stepped shape.

[0010] The beneficial effects of the above technical scheme are as follows: when the two clamp unit elements clamp the workpiece (ring gear, pinion shaft), the second clamping part of the two clamp unit elements first clamps the ring gear with a larger diameter and places it on the press-fitting station, and then the first clamping part of the two clamp unit elements clamps the pinion shaft with a smaller diameter and the pinion shaft is press-fitted into the ring gear by the press-fitting machine; in the follow-up process of the down pressure of the press head of the press-fitting machine, the clamp assembly with the pinion shaft moves downward, the stepped clamp unit element can ensure that it can assist in positioning during the downward movement and will not interfere with the ring gear (when the clamp assembly clamps the pinion shaft, the distance between the first clamping parts of the two clamp unit elements is the diameter a of the pinion shaft, and the distance between the second clamping parts of the two clamp unit elements is b1, the diameter of the ring gear is b, and b1 is greater than b), and can be smoothly pressed down; and the linear guide rail has high linear motion accuracy, and the clamp assembly is installed on the linear guide rail, so that the positioning accuracy and stability of the clamp assembly are ensured when the clamp assembly slides up and down.

[0011] In a possible implementation, the contact surface of the first clamping part with the pinion shaft has a first arc surface matched with the curvature and shape of the outer periphery of the pinion shaft, and the contact surface of the second clamping part with the ring gear has a second arc surface matched with the curvature and shape of the outer periphery of the ring gear; the matched arc surfaces on the contact surfaces of the clamping parts and the workpiece are beneficial to better radially position the workpiece, so that the two clamp unit elements can stably clamp the workpiece, and the accuracy and stability of press-fitting are improved.

[0012] In a possible implementation, the first driving cylinder is installed on the first cylinder mounting plate, and the first cylinder mounting plate is connected with the linear guide rail through the sliding block.

[0013] In a possible implementation, the second driving cylinder drives the clamp assembly to slide along the linear guide rail through the cylinder push plate; the force of the second driving cylinder driving rod is transmitted to the entire cylinder push plate before the clamp assembly is pushed, so that the force on the clamp assembly is uniform and stable.

[0014] In a possible implementation, the machine frame and the mechanical arm connected to the machine frame are further included; the second driving cylinder is installed on the second cylinder mounting plate, and the second cylinder mounting plate is connected with the mechanical arm through the extension connecting plate and the righting connecting plate; the extension connecting plate is connected perpendicularly to the upper surface of the righting connecting plate, and the righting connecting plate and the extension connecting plate are connected to the side and the lower end of the mechanical arm, respectively; compared with being connected only to the lower end or the side of the machine frame, the connection mode with two connection surfaces in the above scheme is more stable.

[0015] Furthermore, the extension connecting plate is arranged parallel to the second cylinder mounting plate, the straightening connecting plate is vertically connected to the second cylinder mounting plate, and an extension rib is connected between the upper surface of the extension connecting plate and the straightening connecting plate and the second cylinder mounting plate; the presence of the extension rib makes the relative position between the straightening connecting plate, the extension connecting plate and the second cylinder mounting plate more stable.

[0016] Furthermore, the lower surface of the straightening connecting plate is connected to both sides of the straightening rib plate, and the straightening rib plate is also connected to the second cylinder mounting plate. Since the straightening connecting plate is vertically connected to the second cylinder mounting plate, the straightening connecting plate is connected to the second cylinder mounting plate through the extension rib plate on its upper surface and the straightening rib plate on its lower surface, ensuring the stability of the connection.

[0017] In one possible implementation, the second drive cylinder is mounted on a second cylinder mounting plate, and the linear guide rail is provided on the second cylinder mounting plate; a collision protection plate connected to the second cylinder mounting plate is provided below the linear guide rail, and a collision protection rib is connected between the collision protection plate and the second cylinder mounting plate; a collision protection block is provided on the collision protection plate, and the collision protection block is located below the travel distance of the first cylinder mounting plate along the linear guide rail; that is, the second drive cylinder drives the clamping assembly (including the first drive cylinder and two clamping unit components) to slide relative to the second cylinder mounting plate along the linear guide rail, and the collision protection plate and the collision protection block are provided on the second cylinder mounting plate to limit the sliding travel distance of the clamping assembly and buffer its movement. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the press-fitting synchronization mechanism for the gear ring and gear shaft provided by this utility model;

[0019] Figure 2 for Figure 1 Side view of the press-fit synchronization mechanism of the gear ring and gear shaft in the middle;

[0020] Figure 3 for Figure 1 A schematic diagram of the clamping assembly and linear guide structure of the press-fitting synchronization mechanism for the gear ring and gear shaft in the middle;

[0021] Figure 4 for Figure 3 Top view of the structure;

[0022] Figure 5 for Figure 4 Sectional view at point AA;

[0023] Figure 6 This is a three-dimensional structural diagram of a fixture unit.

[0024] Figure 7 This is a schematic diagram of the installation structure of the first and second drive cylinders.

[0025] Figure 8 This is a schematic diagram showing the mating positions of the linear guide rail, anti-collision plate, and anti-collision block.

[0026] In the figure, 1 is the clamping assembly; 11 is the clamping unit; 111 is the first clamping part; 112 is the second clamping part; 121 is the first arc surface; 122 is the second arc surface; 21 is the first driving cylinder; 211 is the first cylinder mounting plate; 22 is the second driving cylinder; 221 is the cylinder push plate; 222 is the second cylinder mounting plate; 31 is the linear guide rail; 32 is the extension rib; 33 is the extension connecting plate; 34 is the straightening connecting plate; 35 is the straightening rib; 36 is the anti-collision plate; 37 is the anti-collision rib; 38 is the anti-collision block; 39 is the slider; 4 is the frame; 41 is the robotic arm. Detailed Implementation

[0027] First, those skilled in the art should understand that the following embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0029] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 8As shown, this embodiment provides a press-fitting synchronization mechanism for gear rings and gear shafts, including a frame 4 and a robotic arm 41 connected to the frame 4. The position and extension length of the robotic arm 41 relative to the frame 4 are adjustable. A clamping assembly 1 is connected to the end of the robotic arm 41. The clamping assembly 1 includes two clamping units 11 and a first drive cylinder 21. The first drive cylinder 21 drives the two clamping units 11 to move relative to each other and gives the two clamping units 11 a clamping position for clamping the gear ring or gear shaft. The assembly also includes a second drive cylinder 22 and a linear guide rail 31. The second drive cylinder 22 drives the clamping assembly 1 to slide along the linear guide rail 31.

[0032] The clamping unit 11 includes a first clamping part 111 located at its upper end and a second clamping part 112 located at its lower end;

[0033] When the clamping assembly 1 clamps the gear ring, the distance between the second clamping portions 112 of the two clamping units 11 is the diameter b of the gear ring;

[0034] When the clamping assembly 1 clamps the gear shaft, the distance between the first clamping parts 111 of the two clamping units 11 is the diameter a of the gear shaft, and the distance between the second clamping parts 112 of the two clamping units 11 is b1, where b1 ≥ b.

[0035] And a < b, the first clamping part 111 and the second clamping part 112 are combined in a stepped shape.

[0036] In use, the gear ring and gear shaft pressing synchronization mechanism clamps the gear ring and places it in the pressing position, and then clamps the gear shaft. During the process of the press head pressing the gear shaft into the gear ring, the two clamping units always clamp and limit the gear shaft to ensure stable pressing. During the pressing process, the clamping assembly moves synchronously downward along the linear guide rail as the press head presses down. After the pressing of the gear shaft is completed, the first drive cylinder drives the two clamping units to move away from each other to release the clamping, and the second drive cylinder lifts the clamping assembly.

[0037] The fixture unit is designed in a stepped form. When clamping the workpiece, the small opening at the upper end of the two fixture units is used to clamp the gear shaft with a smaller diameter, and the large opening at the lower end is used to clamp the gear ring with a larger diameter. During the follow-up movement of the clamping assembly following the press head downward, the distance between the first clamping parts of the two fixture units is the diameter a of the gear shaft, and the distance between the second clamping parts of the two fixture units is b1. The diameter of the gear ring is b, and b1≥b. In actual production, b1 can be only slightly larger than b so that the stepped fixture unit can ensure that it will not interfere with the gear ring when moving downward.

[0038] In terms of control, a 2-position 3-way Airtac 3V220 solenoid valve is used. The opening and closing of the solenoid valve controls the intake and exhaust of the second drive cylinder, and the flow rate of the intake and exhaust is adjusted by the throttle valve, thereby controlling the extension and retraction speed of the second drive cylinder.

[0039] In the above structure, the linear guide rail itself has high linear motion accuracy. By mounting the clamping assembly on the linear guide rail and pushing it up and down by the first drive cylinder, the positioning accuracy is guaranteed.

[0040] In this embodiment, the first clamping part 111 has a first arc surface 121 on the contact surface with the gear shaft that matches the curvature and shape of the outer periphery of the gear shaft, and the second clamping part 112 has a second arc surface 122 on the contact surface with the gear ring that matches the curvature and shape of the outer periphery of the gear ring; this is beneficial for better radial positioning of the workpiece and improving the accuracy and stability of press fitting.

[0041] In this embodiment, the first drive cylinder 21 is mounted on the first cylinder mounting plate 211, and the first cylinder mounting plate 211 is connected to the linear guide rail 31 via the slider 39.

[0042] In this embodiment, the second drive cylinder 22 pushes the clamping assembly 1 to slide along the linear guide rail 31 through the cylinder push plate 221; the force of the drive rod of the second drive cylinder 22 is transmitted to the entire cylinder push plate 221 and then pushes the clamping assembly 1, ensuring that the clamping assembly is subjected to uniform and stable force at all points.

[0043] In this embodiment, refer to Figure 8 The second drive cylinder 22 is mounted on the second cylinder mounting plate 222, and the linear guide rail 31 is provided on the second cylinder mounting plate 222; a collision protection plate 36 connected to the second cylinder mounting plate 222 is provided below the linear guide rail 31, and a collision protection rib plate 37 is connected between the collision protection plate 36 and the second cylinder mounting plate 222; a collision protection block 38 is provided on the collision protection plate 36, and the collision protection block 38 is located below the stroke of the first cylinder mounting plate 211 sliding along the linear guide rail 31; the collision protection plate 36 and the collision protection block 38 limit the sliding stroke of the clamping assembly and buffer its movement.

[0044] In one embodiment, reference is made to... Figure 7 The second drive cylinder 22 is mounted on the second cylinder mounting plate 222, and the second cylinder mounting plate 222 is connected to the robotic arm 41 through the extension connecting plate 33 and the straightening connecting plate 34. The extension connecting plate 33 is vertically connected to the upper surface of the straightening connecting plate 34. The straightening connecting plate 34 and the extension connecting plate 33 are respectively connected to the side and the lower end of the robotic arm 41. Compared with connecting only to the lower end or side of the frame, the connection method with two connecting surfaces in the above solution is more stable.

[0045] Furthermore, the extension connecting plate 33 is arranged parallel to the second cylinder mounting plate 222, and the straightening connecting plate 34 is vertically connected to the second cylinder mounting plate 222. An extension rib 32 is connected between the upper surfaces of the extension connecting plate 33 and the straightening connecting plate 34 and the second cylinder mounting plate 222. The presence of the extension rib 32 makes the relative position between the straightening connecting plate 34, the extension connecting plate 33, and the second cylinder mounting plate 222 more stable.

[0046] Furthermore, both sides of the lower surface of the straightening connecting plate 34 are connected to straightening ribs 35, and the straightening ribs 35 are also connected to the second cylinder mounting plate 222. Since the straightening connecting plate 34 is vertically connected to the second cylinder mounting plate 222, the straightening connecting plate 34 is connected to the second cylinder mounting plate through the extension ribs 32 on its upper surface and the straightening ribs 35 on its lower surface, ensuring the stability of its connection.

[0047] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0048] In the description of this application, the reference to terms such as "this embodiment," "an embodiment," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A press-fitting synchronization mechanism for a gear ring or gear shaft, comprising a clamping assembly (1), the clamping assembly (1) comprising two clamping units (11) and a first driving cylinder (21), the first driving cylinder (21) driving the two clamping units (11) to move relative to each other and positioning the two clamping units (11) in a clamping position for clamping the gear ring or gear shaft, characterized in that: It also includes a second drive cylinder (22) and a linear guide rail (31), wherein the second drive cylinder (22) drives the clamping assembly (1) to slide along the linear guide rail (31); The clamp unit (11) includes a first clamping part (111) located at its upper end and a second clamping part (112) located at its lower end. When the clamping assembly (1) clamps the gear ring, the distance between the second clamping parts (112) of the two clamping units (11) is the diameter b of the gear ring; When the clamping assembly (1) clamps the gear shaft, the distance between the first clamping part (111) of the two clamping units (11) is the diameter a of the gear shaft, and the distance between the second clamping part (112) of the two clamping units (11) is b1, b1≥b; And a < b, the first clamping part (111) and the second clamping part (112) are combined in a stepped shape.

2. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 1, characterized in that: The first clamping part (111) has a first arc surface (121) on the contact surface with the gear shaft that is adapted to the curvature and shape of the outer periphery of the gear shaft, and the second clamping part (112) has a second arc surface (122) on the contact surface with the gear ring that is adapted to the curvature and shape of the outer periphery of the gear ring.

3. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 1, characterized in that: The first drive cylinder (21) is mounted on the first cylinder mounting plate (211), and the first cylinder mounting plate (211) is connected to the linear guide rail (31) via a slider (39).

4. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 1, characterized in that: The second drive cylinder (22) pushes the clamping assembly (1) to slide along the linear guide rail (31) via the cylinder push plate (221).

5. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 1, characterized in that: It also includes a frame (4) and a robotic arm (41) connected to the frame (4); the second drive cylinder (22) is mounted on the second cylinder mounting plate (222), and the second cylinder mounting plate (222) is connected to the robotic arm (41) through an extension connecting plate (33) and a straightening connecting plate (34). The extension connecting plate (33) is perpendicular to the upper surface of the straightening connecting plate (34), and the straightening connecting plate (34) and the extension connecting plate (33) are respectively connected to the side and the lower end of the robotic arm (41).

6. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 5, characterized in that: The straightening connecting plate (34) is vertically connected to the second cylinder mounting plate (222). An extension rib (32) is connected between the upper surface of the straightening connecting plate (34) and the second cylinder mounting plate (222), and the extension rib (32) is also connected to the extension connecting plate (33).

7. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 6, characterized in that: The lower surface of the straightening connecting plate (34) is connected to both sides of the straightening rib plate (35), and the straightening rib plate (35) is also connected to the second cylinder mounting plate (222).

8. The press-fitting synchronization mechanism for the gear ring and gear shaft according to claim 3, characterized in that: The second drive cylinder (22) is mounted on the second cylinder mounting plate (222), and the linear guide rail (31) is provided on the second cylinder mounting plate (222); a collision protection plate (36) connected to the second cylinder mounting plate (222) is provided below the linear guide rail (31), and a collision protection rib plate (37) is connected between the collision protection plate (36) and the second cylinder mounting plate (222); a collision protection block (38) is provided on the collision protection plate (36), and the collision protection block (38) is located below the stroke of the first cylinder mounting plate (211) sliding along the linear guide rail (31).

Images