Positioning tool for grinding and mounting inner hole of planetary gear

Abstract

The application discloses a planet gear inner hole grinding clamping positioning tool, which comprises a vertical mounting seat, a horizontal mounting seat connected with the vertical mounting seat, a fixing seat arranged on the vertical mounting seat, a through hole arranged on the fixing seat, a grinding rod passing through the fixing seat through the through hole on the fixing seat, a clamping drive arranged on the horizontal mounting seat, a clamping seat connected with the clamping drive, a through hole arranged on the clamping seat, the through hole on the clamping seat being coaxially arranged with the through hole on the fixing seat and having the same diameter, a ring edge arranged on the fixing seat, inner meshing teeth arranged on the ring edge, the inner meshing teeth being engaged with a planet gear, and the inner meshing teeth being used for limiting rotation of the planet gear in a clamped state. The planet gear is quickly clamped through the fixing seat and the clamping seat, so that the grinding efficiency of the planet gear is improved. The rotation of the planet gear is limited through the engagement of the inner meshing teeth with the planet gear, so that the grinding effect is improved.

Description

Technical Field

[0001] This application relates to the field of planetary gear internal grinding technology, and in particular to a planetary gear internal grinding clamping and positioning fixture. Background Technology

[0002] Planetary gears are gears that, in addition to rotating around their own axis like fixed-axis gears, also have their axis of rotation rotating around the axes of other gears along with the planet carrier. Planetary gears are generally small in size.

[0003] In the existing technology, the positioning fixture for grinding the inner hole of planetary gears relies on positioning chucks. However, the fixing operation of positioning chucks is complicated, and for small-sized planetary gears produced in large quantities, the use of positioning chucks will reduce the processing efficiency.

[0004] Therefore, it is necessary to propose a fixture for clamping and positioning the inner bore of planetary gears to quickly position the planetary gears, which has become an important technical problem that urgently needs to be solved. Utility Model Content

[0005] This application provides a fixture for clamping and positioning planetary gear inner bore grinding, which aims to solve the problem that the fixing operation of positioning chucks in the prior art is complicated, and that the use of positioning chucks will reduce the processing efficiency for small-sized planetary gears produced in large quantities.

[0006] To achieve the above objectives, this application proposes a planetary gear internal bore grinding clamping and positioning fixture, comprising: a vertical mounting base; a horizontal mounting base connected to the vertical mounting base; a fixed base disposed on the vertical mounting base, the fixed base having a through hole through which the abrasive rod passes; a clamping drive disposed on the horizontal mounting base; a clamping seat connected to the clamping drive, the clamping seat having a through hole coaxially arranged with the through hole on the fixed base and having the same diameter; a ring edge disposed on the fixed base; and internal meshing teeth disposed on the ring edge, the internal meshing teeth meshing with and connecting to the planetary gear, the internal meshing teeth being used to restrict the rotation of the planetary gear in the clamped state.

[0007] In some embodiments, the device further includes: a fixing plate disposed on a horizontal mounting base; a connecting plate disposed on the fixing plate, and a clamping drive mounted on the connecting plate; and an output rod disposed on the clamping drive, the output rod being connected to the clamping seat.

[0008] In some embodiments, the clamping seat includes: a first clamping plate connected to an output rod; an intermediate connecting plate connected to the first clamping plate; and a second clamping plate connected to the intermediate connecting plate, wherein both the first clamping plate and the second clamping plate are provided with through holes.

[0009] In some embodiments, the system further includes: a slide rail, wherein a slide rail is disposed between the fixed plate and the connecting plate; a sliding plate, wherein the sliding plate is movably disposed on the slide rail, and an output rod is connected to the sliding plate; and a connecting rod, wherein one end of the connecting rod is connected to the sliding plate, and the other end of the connecting rod is connected to the first clamping plate.

[0010] In some embodiments, the device further includes: a first mounting hole, which is provided on a vertical mounting base; and a second mounting hole, which is provided on a horizontal mounting base.

[0011] This application provides a fixture for clamping and positioning planetary gears during internal grinding, comprising: a vertical mounting base; a horizontal mounting base connected to the vertical mounting base; a fixed base disposed on the vertical mounting base, having a through hole through which the abrasive rod passes; a clamping drive disposed on the horizontal mounting base; a clamping seat connected to the clamping drive, having a through hole coaxial with and equal in diameter to the through hole on the fixed base; a ring edge on the fixed base; and internal meshing teeth on the ring edge, which mesh with the planetary gear to restrict its rotation in the clamped state. In the initial state, the abrasive rod passes through the through hole on the fixed base, with a portion of the abrasive rod extending out of the fixed base. The operator places the planetary gear onto the abrasive bar, ensuring one side of the planetary gear abuts against the fixed seat, and engages the internal meshing teeth to restrict its rotation. Then, the clamping drive moves the clamping seat, pressing it against the planetary gear so that the other side of the planetary gear abuts against the clamping seat, thus securing the planetary gear. A through hole on the clamping seat allows the abrasive bar to pass through. Driven by the machine tool, the abrasive bar rotates, grinding the inner bore of the planetary gear. Rapid clamping and grinding of the planetary gear improves grinding efficiency, and the internal meshing teeth further restrict rotation, enhancing the grinding effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural diagram of a planetary gear inner hole grinding clamping and positioning fixture in one embodiment of this application; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 1 Enlarged view of part B in the middle; Figure 4 This is a front view of a planetary gear inner hole grinding clamping and positioning fixture in one embodiment of this application; Figure 5 This is a side view of a planetary gear inner hole grinding clamping and positioning fixture in one embodiment of this application.

[0013] In the diagram: 1. Vertical mounting base; 2. First mounting hole; 3. Abutment plate; 4. Second clamping plate; 5. First clamping plate; 6. Sliding plate; 7. Clamping drive; 8. Connecting plate; 9. Fixing plate; 10. Horizontal mounting base; 11. Slide rail; 12. Intermediate connecting plate; 13. Fixing base; 14. Ring edge; 15. Internal meshing teeth; 16. Through hole; 17. L-shaped clamping block; 18. Output rod; 19. Locking nut; 20. Connecting rod; 21. Second mounting hole; 22. Guide cylinder. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0016] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0017] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0018] See Figure 1 , Figure 2 and Figure 5As shown, this application proposes a planetary gear inner bore grinding clamping and positioning fixture, including: a vertical mounting base 1; a horizontal mounting base 10, the horizontal mounting base 10 being connected to the vertical mounting base 1; a fixed base 13, the fixed base 13 being disposed on the vertical mounting base 1, the fixed base 13 being provided with a through hole 16, the abrasive rod passing through the through hole 16 on the fixed base 13; a clamping drive 7, the clamping drive 7 being disposed on the horizontal mounting base 10; a clamping seat, the clamping seat being connected to the clamping drive 7, the clamping seat being provided with a through hole 16, the through hole 16 on the clamping seat being coaxially disposed with the through hole 16 on the fixed base 13, and having the same diameter; a ring edge 14, the fixed base 13 being provided with a ring edge 14; and internal meshing teeth 15, the ring edge 14 being provided with internal meshing teeth 15, the internal meshing teeth 15 meshing with and connecting to the planetary gear, the internal meshing teeth 15 being used to restrict the rotation of the planetary gear in the clamped state.

[0019] The vertical mounting base 1 and the horizontal mounting base 10 form the structural basis of the planetary gear internal grinding clamping and positioning fixture. All other structures on the planetary gear internal grinding clamping and positioning fixture are directly or indirectly mounted on the vertical mounting base 1 or the horizontal mounting base 10.

[0020] The fixed base 13, the clamping base, and the clamping drive 7 are the core structures of this application. In the initial state, the abrasive rod passes through the through hole 16 on the fixed base 13, and part of the abrasive rod extends out of the fixed base 13. The planetary gear is placed on the abrasive rod and one side of the planetary gear abuts against the fixed base 13. The clamping drive 7 drives the clamping base to move, causing the clamping base to press against the planetary gear, so that the other side of the planetary gear abuts against the clamping base, thus completing the fixation of the planetary gear.

[0021] In this embodiment, the clamping drive 7 is preferably a cylinder, which can drive the clamping seat to move back and forth in a straight line.

[0022] The rotation of the planetary gear is restricted by the engagement of the internal meshing teeth 15 with the planetary gear, thus avoiding the ineffective restriction of the planetary gear rotation by the fixed seat 13 and the clamping seat alone, which would affect the grinding effect if the planetary gear rotates with the abrasive rod.

[0023] Specifically, in the initial state, the abrasive rod passes through the through hole 16 on the fixed seat 13, with part of the abrasive rod extending out of the fixed seat 13. The operator places the planetary gear onto the abrasive rod, with one side of the planetary gear abutting against the fixed seat 13, and the internal meshing teeth 15 engaging with the planetary gear to restrict its rotation. Then, the clamping drive 7 drives the clamping seat to move, causing the clamping seat to press against the planetary gear, so that the other side of the planetary gear abuts against the clamping seat, thus completing the fixation of the planetary gear. The through hole 16 on the clamping seat is used to avoid the abrasive rod. Under the drive of the machine tool, the abrasive rod rotates, grinding the inner hole of the planetary gear. Quickly clamping and grinding the planetary gear helps improve the grinding efficiency of the planetary gear, and the internal meshing teeth 15 restrict the rotation of the planetary gear, improving the grinding effect.

[0024] The horizontal mounting base 10 is also connected to a moving drive. After the abrasive bar starts to rotate, the moving drive drives the planetary gear inner hole grinding clamping and positioning fixture and the planetary gear on it to move back and forth along the axis of the abrasive bar, thereby improving the grinding effect on the inner hole of the planetary gear. The moving drive is preferably a hydraulic cylinder.

[0025] The axial thickness of the ring edge 14 is lower than the axial thickness of the planetary gear. This structural design allows the clamping seat to effectively abut against the planetary gear, preventing interference between the ring edge 14 and the clamping seat. Furthermore, this structural design facilitates the removal of the planetary gear by the operator after grinding.

[0026] The vertical mounting base 1 is also equipped with two abutment plates 3, which are respectively located on both sides of the fixed base 13. The two abutment plates 3 can limit the stroke of the clamping seat and prevent the clamping seat from excessively squeezing the planetary gear.

[0027] See Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, it further includes: a fixing plate 9, which is disposed on the horizontal mounting base 10 and connected to the horizontal mounting base 10 by screws; a connecting plate 8, which is disposed on the fixing plate 9 and installed on the fixing plate 9 by screws; a clamping drive 7, which is installed on the connecting plate 8 and installed on the connecting plate 8 by screws; and an output rod 18, which is disposed on the clamping drive 7 and connected to the clamping seat. The clamping drive 7 has a piston inside, which is connected to the output rod 18 and the output rod 18 is connected to the clamping seat to drive the clamping seat to move linearly.

[0028] See Figure 1 , Figure 3 and Figure 4As shown, in some embodiments, the clamping seat includes: a first clamping plate 5, which is connected to the output rod 18; an intermediate connecting plate 12, which is connected to the first clamping plate 5; and a second clamping plate 4, which is connected to the intermediate connecting plate 12. The first clamping plate 5, the second clamping plate 4, and the intermediate connecting plate 12 are welded together. Both the first clamping plate 5 and the second clamping plate 4 are provided with through holes 16. The intermediate connecting plate 12 increases the gap between the first clamping plate 5 and the second clamping plate 4, thereby increasing the effective stroke of the abrasive rod.

[0029] See Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the system further includes: a slide rail 11, which is disposed between the fixed plate 9 and the connecting plate 8; a sliding plate 6, which is movably disposed on the slide rail 11, and an output rod 18 connected to the sliding plate 6; and a connecting rod 20, one end of which is connected to the sliding plate 6, and the other end of which is connected to the first clamping plate 5. The cooperation between the slide rail 11 and the sliding plate 6 restricts the movement direction of the sliding plate 6, which helps to ensure that the movement direction of the clamping seat does not deviate, thereby ensuring that the abrasive rod can extend into the through hole 16 of the first clamping plate 5 and the second clamping plate 4. Furthermore, the cooperation between the slide rail 11 and the sliding plate 6 also prevents the output rod 18 from being subjected to excessive force, thus extending the service life of the clamping drive 7.

[0030] In this embodiment, two slide rails 11 are provided, spaced apart. A guide cylinder 22 is provided on the sliding plate 6, and the guide cylinder 22 is adapted to the slide rail 11. Two L-shaped clamps 17 are provided on the sliding plate 6. Two locking nuts 19 are screwed to the end of the output rod 18. The minimum gap between the two L-shaped clamps 17 is greater than the outer diameter of the output rod 18 but less than the outer diameter of the locking nuts 19. The maximum gap between the two L-shaped clamps 17 is greater than the outer diameter of the locking nuts 19. The connection between the output rod 18 and the sliding plate 6 is formed by the two L-shaped clamps 17 and the two locking nuts 19.

[0031] See Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, it further includes: a first mounting hole 2, provided on the vertical mounting base 1; and a second mounting hole 21, provided on the horizontal mounting base 10. The vertical mounting base 1 and the horizontal mounting base 10 are mounted on the grinding machine or on the movable frame of the grinding machine through the first mounting hole 2, the second mounting hole 21, and related fasteners.

[0032] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A fixture for clamping and positioning planetary gear inner bore grinding, characterized in that, include: Vertical mounting base (1); A horizontal mounting base (10) is connected to the vertical mounting base (1); A fixing seat (13) is provided on the vertical mounting seat (1). The fixing seat (13) has a through hole (16) and the abrasive rod passes through the fixing seat (13) through the through hole (16). A clamping drive (7) is disposed on the horizontal mounting base (10); A clamping seat is connected to the clamping drive (7). The clamping seat is provided with a through hole (16). The through hole (16) on the clamping seat is coaxially arranged with the through hole (16) on the fixed seat (13) and has the same diameter. Ring edge (14), the ring edge (14) is provided on the fixed base (13); Internal meshing teeth (15) are provided on the ring edge (14). The internal meshing teeth (15) mesh with the planetary gear. The internal meshing teeth (15) are used to restrict the rotation of the planetary gear in the clamped state.

2. The planetary gear inner hole grinding clamping and positioning fixture according to claim 1, characterized in that, Also includes: A fixing plate (9) is provided on the horizontal mounting base (10); A connecting plate (8) is disposed on the fixing plate (9), and the clamping drive (7) is mounted on the connecting plate (8); Output rod (18), the clamping drive (7) sets the output rod (18), the output rod (18) is connected to the clamping seat.

3. The planetary gear inner hole grinding clamping and positioning fixture according to claim 2, characterized in that, The clamping seat includes: The first clamping plate (5) is connected to the output rod (18); Intermediate connecting plate (12), the intermediate connecting plate (12) is connected to the first clamping plate (5); The second clamping plate (4) is connected to the intermediate connecting plate (12). Both the first clamping plate (5) and the second clamping plate (4) are provided with through holes (16).

4. The planetary gear inner hole grinding clamping and positioning fixture according to claim 3, characterized in that, Also includes: The slide rail (11) is provided between the fixing plate (9) and the connecting plate (8). A sliding plate (6) is movably disposed on the slide rail (11), and the output rod (18) is connected to the sliding plate (6). A connecting rod (20) is provided, one end of which is connected to the sliding plate (6), and the other end of which is connected to the first clamping plate (5).

5. The planetary gear inner hole grinding clamping and positioning fixture according to claim 1, characterized in that, Also includes: The first mounting hole (2) is provided on the vertical mounting base (1); The second mounting hole (21) is provided on the horizontal mounting base (10).

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