Half axle gear outer circle finish turning positioning device

Abstract

The utility model relates to the technical field of gear machining, in particular to a half axle gear outer circle finish turning positioning device which comprises a positioning shaft used for fixing a gear, the gear is sleeved on the outer side of the positioning shaft, a fixing ring is sleeved on the outer side of the gear, a fastener is arranged at one end of the positioning shaft, the fastener is sleeved on the outer side of the positioning shaft, and a gasket structure is arranged between the fastener and the gear. A pin positioning piece used for limiting rotation of the fastening piece is arranged on the outer side of the fastening piece, a sealing sleeve structure is detachably connected to the side, away from the gear, of the fastening piece, and the positioning shaft is sleeved with the sealing sleeve structure. The fastening piece is rotated, the fastening piece can be matched with the fixing ring to fasten the gear, meanwhile, the fastening piece is locked through the pin positioning piece, it is ensured that the fastening piece cannot be loosened during turning, the stability is good, meanwhile, the sealing sleeve structure is detachably connected to one side of the fastening piece, and during turning, scrap iron cannot cause damage to the threaded face.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a positioning device for precision turning of the outer circle of a half-shaft gear. Background Technology

[0002] The axle gear has a rectangular spline at its center. The journal section of the axle gear has a wall thickness of 6 mm and an outer diameter tolerance of 0.03. The coaxiality error between the outer diameter of the journal section and the major diameter of the rectangular spline is less than 0.03. The runout of the bevel teeth in the axle gear relative to the outer diameter end face of the journal section is less than 0.1. Therefore, when grinding the outer diameter end face, both the center of the bevel teeth and the center of the major diameter of the rectangular spline must be simultaneously centered to ensure the requirements are met.

[0003] Currently, when positioning and precision machining the outer diameter of a half-shaft gear, the half-shaft gear is fixed to a positioning shaft. After the positioning shaft is secured by a three-jaw chuck, the collet on the positioning shaft tightens the gear from both the front and rear sides. However, because the collet is fitted onto the positioning shaft and connected via a threaded connection for gear assembly and disassembly, the threaded surface of the positioning shaft is exposed. During precision machining, the shaft experiences minute, high-frequency vibrations. This not only causes the collet to loosen, affecting the gear machining accuracy, but also causes machining debris to adhere to the threads on the outer side of the positioning shaft, affecting subsequent gear and collet assembly and disassembly. This process requires optimization. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a positioning device for precision machining of the outer diameter of a half-shaft gear, thereby overcoming the shortcomings of existing devices.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a positioning device for precision machining of the outer circle of a half-shaft gear, including a positioning shaft for fixing the gear, the gear being sleeved on the outside of the positioning shaft, a fixing ring being sleeved on the outside of the gear, and the fixing ring being fixedly connected to the positioning shaft;

[0006] One end of the positioning shaft is provided with a fastener, which is fitted on the outside of the positioning shaft. The fastener is threaded to the external thread on the outside of the positioning shaft, and the gear is placed between the retaining ring and the fastener.

[0007] A gasket structure is provided between the fastener and the gear. A pin positioning element is provided on the outside of the fastener to limit the rotation of the fastener. A sealing sleeve structure is detachably connected to the side of the fastener away from the gear. The sealing sleeve structure is sleeved on the outside of the positioning shaft.

[0008] A further improvement is that the fastener includes a threaded sleeve and a positioning ring. The threaded sleeve is fitted on the outside of the positioning shaft and is threadedly connected to the external thread. The positioning ring is fixedly disposed on the side of the threaded sleeve facing the gear.

[0009] A further improvement is that the gasket structure includes a gasket that is sleeved on the outside of the positioning shaft.

[0010] A further improvement is that: the gasket has several protrusions on the side facing the positioning ring, the protrusions are fixedly connected to the gasket, the gasket has a groove that matches the protrusions on the side away from the positioning ring, and the positioning ring has a positioning groove that matches the protrusions on the side facing the gasket.

[0011] A further improvement is that the sealing sleeve structure includes a rotating sleeve, which is fitted onto one end of the positioning shaft and is threadedly connected to an external thread. A lever is provided at the end of the rotating sleeve away from the threaded sleeve, and the lever is fixedly connected to the rotating sleeve.

[0012] A further improvement is that: the side of the sleeve facing the threaded sleeve is provided with multiple positioning rods, which are fixedly connected to the sleeve; the side of the threaded sleeve facing the sleeve is provided with multiple positioning grooves, and the positioning rods are slidably connected to the threaded sleeve.

[0013] A further improvement is that: the pin positioning component is provided on at least one boss on the outside of the positioning ring, the boss is provided with a threaded hole, the threaded hole passes through the positioning ring, a threaded rod is provided in the threaded hole, one end of the threaded rod is provided with a prismatic groove, and the other end of the threaded rod is slidably connected to the pin groove provided on the outside of the positioning shaft.

[0014] A further improvement is that a reinforcing ring is provided on the side of the fixed ring away from the gear. The reinforcing ring is sleeved on the outside of the positioning shaft, and the reinforcing ring is fixedly connected to the fixed ring and the positioning shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Rotating the fastener will engage with the retaining ring to tighten the gear, while the pin locating element will lock the fastener in place, ensuring that it will not loosen during machining. In addition to its good stability, the sealing sleeve structure can be detachably connected to one side of the fastener, preventing metal chips from damaging the threaded surface during machining. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0018] Figure 1 This is a structural diagram of the positioning shaft in this utility model.

[0019] Figure 2 This is a structural diagram of the threaded sleeve in this utility model.

[0020] Figure 3 This is a structural diagram of the rotating sleeve in this utility model.

[0021] Figure 4 This is a structural diagram of the gasket in this utility model.

[0022] Figure 5 This is a utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0023] The components are: 1. Positioning shaft; 11. External thread; 2. Retaining ring; 21. Reinforcing ring; 3. Fastener; 31. Threaded sleeve; 32. Positioning ring; 33. Positioning groove; 4. Pin positioning component; 41. Boss; 42. Threaded rod; 43. Rib groove; 5. Sealing sleeve structure; 51. Swivel sleeve; 52. Paddle; 53. Positioning rod; 6. Gear; 7. Gasket; 71. Protrusion; 73. Groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] according to Figure 1 , 2 As shown in Figures 3, 4, and 5, this embodiment proposes a positioning device for precision machining of the outer circle of a half-shaft gear, including a positioning shaft 1 for fixing a gear 6, the gear 6 being sleeved on the outside of the positioning shaft 1, a fixing ring 2 being sleeved on the outside of the gear 6, and the fixing ring 2 being fixedly connected to the positioning shaft 1.

[0026] When precision machining the outer diameter of the gear, the positioning shaft 1 is pre-fixed in the center of the three-jaw chuck, and then the gear 6 is fitted onto the outside of the positioning shaft 1. The retaining ring 2 limits the gear 6 from the root of the gear 6.

[0027] One end of the positioning shaft 1 is provided with a fastener 3, which is sleeved on the outside of the positioning shaft 1. The fastener 3 is threadedly connected to the external thread 11 opened on the outside of the positioning shaft 1. The gear 6 is placed between the retaining ring 2 and the fastener 3.

[0028] Then, after the fastener 3 is screwed onto the outside of the positioning shaft 1, the fastener 3 will tighten the gear 6 and lock the gear 6 in conjunction with the fixing ring 2.

[0029] A gasket structure is provided between the fastener 3 and the gear 6. A pin positioning element 4 is provided on the outside of the fastener 3 to limit the rotation of the fastener 3. A sealing sleeve structure 5 is detachably connected to the side of the fastener 3 away from the gear 6. The sealing sleeve structure 5 is sleeved on the outside of the positioning shaft 1.

[0030] To prevent the threads from loosening during turning, after the gear 6 is fixed, the fastener 3 is locked by the pin positioning part 4 to improve the turning stability of the gear 6.

[0031] The gasket structure is placed between the gear 6 and the fastener 3 to protect the gear 6. The sealing sleeve structure 5 is detachably connected to one side of the fastener 3. During turning, the iron filings will not fall to the outside of the positioning shaft 1. It is easy to maintain, and the fastener 3 will not cause damage to the thread surface when it is screwed in and out.

[0032] Specifically, fastener 3 includes a threaded sleeve 31 and a locating ring 32. The threaded sleeve 31 is fitted onto the outside of the locating shaft 1 and is threadedly connected to the external thread 11. The locating ring 32 is fixedly disposed on the side of the threaded sleeve 31 facing the gear 6. Fastener 3 can be installed or removed by rotating the threaded sleeve 31.

[0033] Regarding the gasket structure:

[0034] The gasket structure includes a gasket 7, which is fitted onto the outside of the positioning shaft 1. When tightening the threaded sleeve 31, the gasket 7 acts as a buffer layer to prevent the end of the positioning ring 32 from contacting the surface of the gear 6, thus preventing scratches or damage to the surface of the gear 6 during tightening.

[0035] To prevent the gaskets 7 from becoming loose when multiple gaskets 7 are installed, several protrusions 71 are provided on the side of the gasket 7 facing the positioning ring 32. The protrusions 71 are fixedly connected to the gasket 7. A groove 73 is provided on the side of the gasket 7 away from the positioning ring 32 to mate with the protrusions 71. A positioning groove 33 is provided on the side of the positioning ring 32 facing the gasket 7 to mate with the protrusions 71. When multiple gaskets 7 are stacked, the protrusions 71 on the next gasket 7 are inserted into the groove 73 on the back of the previous gasket 7, and the protrusions 71 on the previous gasket 7 are inserted into the positioning groove 33 at the end of the positioning ring 32. The protrusions 71, by engaging with the groove 73 and the positioning groove 33, restrict the rotation of the gasket 7, thereby improving the installation stability of the gasket structure.

[0036] Regarding sealing sleeve structure 5:

[0037] The sealing sleeve structure 5 includes a rotating sleeve 51, which is fitted onto one end of the positioning shaft 1 and threadedly connected to the external thread 11. A lever 52 is provided at the end of the rotating sleeve 51 away from the threaded sleeve 31, and the lever 52 is fixedly connected to the rotating sleeve 51. The lever 52 is provided to facilitate the operator to rotate the rotating sleeve 51.

[0038] It is worth further explaining that the rotating sleeve 51 has multiple positioning rods 53 on the side facing the threaded sleeve 31. The positioning rods 53 are fixedly connected to the rotating sleeve 51. The threaded sleeve 31 has multiple positioning grooves 33 on the side facing the rotating sleeve 51. The positioning rods 53 are slidably connected to the threaded sleeve 31. The rotating sleeve 51 is connected to the threaded sleeve 31 by insertion and removal. When the threaded sleeve 31 is placed on the outside of the positioning shaft 1, the positioning rods 53 at the end of the rotating sleeve 51 will slide into the positioning grooves 33 at the end of the threaded sleeve 31. When the rotating sleeve 51 is rotated, the threaded sleeve 31 will also rotate together.

[0039] Regarding pin positioning component 4:

[0040] A pin positioning element 4 is provided on at least one boss 41 on the outer side of the positioning ring 32. The boss 41 has a threaded hole through which the positioning ring 32 passes. A threaded rod 42 is threaded into the threaded hole. One end of the threaded rod 42 has a prismatic groove 43, and the other end of the threaded rod 42 is slidably connected to a pin groove on the outer side of the positioning shaft 1. The outer side of the positioning shaft 1 has multiple sets of pin grooves, which are evenly distributed circumferentially along the axis of the positioning shaft 1 to ensure that the threaded hole on the positioning ring 32 matches the pin groove after the threaded sleeve 31 is tightened. By inserting a screwdriver or other tool into the prismatic groove 43 and rotating it, the threaded rod 42 can be rotated. When the threaded rod 42 is screwed into the corresponding pin groove, the threaded sleeve 31 is locked.

[0041] To increase the structural strength of the connection between the fixed ring 2 and the positioning shaft 1, a reinforcing ring 21 is provided on the side of the fixed ring 2 away from the gear 6. The reinforcing ring 21 is sleeved on the outside of the positioning shaft 1 and is fixedly connected to the fixed ring 2 and the positioning shaft 1.

[0042] How this application works:

[0043] When precision turning the outer diameter of the gear, the positioning shaft 1 is pre-fixed in the center of the three-jaw chuck. Then, the gear 6 is fitted onto the outside of the positioning shaft 1, and the retaining ring 2 limits the gear 6 from its root. After the fastener 3 is screwed onto the outside of the positioning shaft 1, the fastener 3 tightens the gear 6 and locks it in place with the retaining ring 2. After fixing the gear 6, the fastener 3 is locked by the pin positioning element 4, ensuring that the fastener 3 will not loosen during turning. While providing good stability, the gasket structure between the gear 6 and the fastener 3 protects the gear 6. The sealing sleeve structure 5 is detachably connected to one side of the fastener 3, preventing metal chips from scattering onto the outside of the positioning shaft 1 during turning. This facilitates maintenance, and the fastener 3 will not damage the threaded surface when screwed in or out.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 this application. Unless otherwise expressly specified and limited, the terms "installed," "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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application 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 claimed herein.

Claims

1. A semi-axle gear outer circle finish turning positioning device, comprising a positioning shaft (1) for fixing a gear (6), the gear (6) being sleeved outside the positioning shaft (1), a fixing ring (2) being sleeved outside the gear (6), and the fixing ring (2) being fixedly connected with the positioning shaft (1), characterized in that: one end of the positioning shaft (1) is provided with a fastener (3), the fastener (3) is sleeved outside the positioning shaft (1), the fastener (3) is threadedly connected with an outer thread (11) formed on the outside of the positioning shaft (1), and the gear (6) is arranged between the fixing ring (2) and the fastener (3); a gasket structure is arranged between the fastener (3) and the gear (6), a pin positioning piece (4) for limiting rotation of the fastener (3) is arranged outside the fastener (3), a sealing sleeve structure (5) is detachably connected to the side of the fastener (3) away from the gear (6), and the sealing sleeve structure (5) is sleeved outside the positioning shaft (1). The fastener (3) comprises a threaded sleeve (31) and a positioning ring (32), the threaded sleeve (31) is sleeved outside the positioning shaft (1), the threaded sleeve (31) is threadedly connected with the outer thread (11), and the positioning ring (32) is fixedly arranged on the side of the threaded sleeve (31) facing the gear (6). The gasket structure comprises a gasket (7), and the gasket (7) is sleeved outside the positioning shaft (1).

2. The semi-axle gear external circle finish turning positioning device according to claim 1, characterized in that: The side of the gasket (7) facing the positioning ring (32) is provided with a plurality of protrusions (71), the protrusions (71) are fixedly connected with the gasket (7), the side of the gasket (7) away from the positioning ring (32) is provided with a groove (73) matched with the protrusions (71), and the side of the positioning ring (32) facing the gasket (7) is provided with a positioning groove (33) matched with the protrusions (71).

3. The semi-axle gear external circle finish turning positioning device according to claim 2, characterized in that: The sealing sleeve structure (5) comprises a rotating sleeve (51), the rotating sleeve (51) is sleeved on one end of the positioning shaft (1), the rotating sleeve (51) is threadedly connected with the outer thread (11), one end of the rotating sleeve (51) away from the threaded sleeve (31) is provided with a push piece (52), and the push piece (52) is fixedly connected with the rotating sleeve (51).

4. The semi-axle gear external circle finish turning positioning device according to claim 3, characterized in that: The side of the rotating sleeve (51) facing the threaded sleeve (31) is provided with a plurality of positioning rods (53), the positioning rods (53) are fixedly connected with the rotating sleeve (51), the side of the threaded sleeve (31) facing the rotating sleeve (51) is provided with a plurality of positioning grooves (33), and the positioning rods (53) are slidably connected with the threaded sleeve (31).

5. The semi-axle gear external circle finish turning positioning device according to claim 2, characterized in that: The pin positioning piece (4) comprises at least one boss (41) outside the positioning ring (32), a threaded hole is formed in the boss (41) and penetrates through the positioning ring (32), a threaded rod (42) is threadedly arranged in the threaded hole, a prismatic groove (43) is formed in one end of the threaded rod (42), and the other end of the threaded rod (42) is slidably connected with a pin groove formed outside the positioning shaft (1).

6. A semi-axle gear external circle finish turning positioning device according to claim 5, characterized in that: ​ 7. A semi-axle gear external circle finish turning positioning device according to claim 2, characterized in that: ​ 8. The semi-axle gear external circle finish turning positioning device according to claim 1, characterized in that: The fixed ring (2) is provided with a reinforcing ring (21) on the side away from the gear (6), the reinforcing ring (21) is sleeved outside the positioning shaft (1), and the reinforcing ring (21) is fixedly connected with the fixed ring (2) and the positioning shaft (1).

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