Heavy truck sun gear shaft gear clamp

Abstract

This invention belongs to the field of electric vehicle parts technology, specifically a heavy-duty truck sun gear axle gear clamp, including a base and a mounting base. Both the base and the mounting base are cylindrical structures. A positioning component is set at the bottom of the base. The positioning component includes a positioning plate, a positioning sleeve and a center on the top surface of the positioning plate, and a mounting fastener on the bottom surface. The center is a frustum-shaped structure located inside the positioning sleeve. A connecting rod is set on the top surface, a pull rod is set on the connecting rod, a clamping block and a sleeve are set on the pull rod, a connecting sleeve is set on the positioning sleeve, and a spring clip is set on the connecting sleeve. The spring clip is locked in the mounting base. An open chuck is set at the top of the spring clip, and the pull rod passes through the open chuck. The center positions the bottom end of the sun gear axle to be processed. The clamping block is tightened by the connecting rod and the pull rod, and the spring clip clamps the open chuck, clamping and positioning the side wall of the sun gear axle. At the same time, it prevents the sun gear axle from deforming due to excessive clamping force at both ends, ensuring product quality.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a gear jig for turning the sun gear axle of a heavy truck. Background Technology

[0002] With the rapid development of the modern logistics industry, heavy-duty trucks are playing an increasingly important role in the logistics sector. Future heavy-duty trucks will possess better performance, higher safety and reliability, and greater work efficiency. The sun gear shaft is a crucial component in the power transmission of heavy-duty trucks, and its manufacturing quality directly affects the truck's performance. During machining, the outer diameter of the adjacent teeth on the end face of the sun gear shaft must not be damaged, therefore hobbing is not feasible. Furthermore, gear shapers, lacking a rotating guide rail on the cutter shaft, cannot provide helical motion for the shaper cutter. Therefore, gear turning is employed. However, gear turning requires addressing the positioning issue of the sun gear shaft during machining, making the use of a center center for positioning impossible to avoid motion interference.

[0003] To address the aforementioned problems, this invention proposes a heavy-duty truck sun gear axle gear clamp. Summary of the Invention

[0004] This invention provides a gear-turning fixture for heavy-duty truck sun gear shafts, which uses a centerless positioning method for the sun gear shaft, facilitating gear turning, reducing processing difficulty, ensuring processing accuracy, and guaranteeing product quality.

[0005] This invention provides the following technical solution:

[0006] A heavy-duty truck sun gear axle gear clamp includes a base and a mounting base, both of which are cylindrical structures. The base has a positioning component at its bottom end and is connected to the mounting base at its top end. The positioning component includes a positioning plate, a positioning sleeve and a center on the top surface of the positioning plate, and a mounting fastener on the bottom surface corresponding to the center. The center is a frustum-shaped structure located inside the positioning sleeve, and has a connecting rod on its top surface. A pull rod is threaded to the top end of the connecting rod, and a sleeve for easy rotation of the pull rod is fitted on the top end of the pull rod. A clamping block and a pad are provided on the side for pressing the sun gear axle to be processed. A connecting sleeve is provided on the positioning sleeve, and a spring clip is threaded to the connecting sleeve. The spring clip is locked in the mounting base, and an open chuck is provided at the top opening of the spring clip. The top end of the pull rod passes through the open chuck.

[0007] Furthermore, the top surface of the tip is provided with a first threaded connection hole, one end of the connecting rod is provided with a second threaded connection hole, and the other end is provided with a first threaded connector that matches the first threaded connection hole. One end of the pull rod is provided with a second threaded connector that matches the second threaded connection hole, and the other end is provided with a clamping block near the end. The clamping block includes a circular locking block, and the outer wall of the locking block is uniformly provided with multiple limiting protrusions. The distance between the limiting protrusions and the circle of the clamping block is less than the inner diameter of the machined sun gear shaft.

[0008] Furthermore, the pad has a first locking hole in the middle that matches the clamping block, and an annular pressure plate is provided on the top side wall. The outer diameter of the annular pressure plate is larger than the inner diameter of the sun gear shaft being machined. The sleeve has a second locking hole in the middle that matches the clamping block, and an insertion hole is provided on the side wall.

[0009] Furthermore, the outer wall of the top of the magazine sleeve has an inverted trapezoidal structure, and the inner wall of the top of the mounting base has a matching bevel.

[0010] Furthermore, the inner sidewall of the top of the base has an annular groove, and the sidewall has a positioning hole corresponding to the position of the annular groove. The bottom of the mounting base has an annular plate that matches the annular groove. The positioning hole has a locking screw that abuts against the annular plate. The sidewall of the mounting base has a locking hole, and the locking hole has an anti-rotation screw that abuts against the sidewall of the magazine sleeve.

[0011] Furthermore, the bottom surface of the positioning plate has a clearance groove corresponding to the top point. The mounting fastener includes a flange connecting plate and a mounting rod. The flange connecting plate is fixed to the bottom surface of the clearance groove with screws, and the mounting rod is vertically fixed in the middle of the side of the flange connecting plate facing away from the top point.

[0012] Furthermore, the bottom surface of the relief groove is provided with a first through hole, and the positioning sleeve is provided with a third threaded connection hole corresponding to the position of the first through hole. A connecting bolt is provided in the first through hole, and the connecting bolt is threadedly connected to the third threaded connection hole.

[0013] Furthermore, the base and the mounting base are connected by screws, the base and the positioning plate are connected by screws, the connecting sleeve and the positioning sleeve are connected by screws, and the tip and the connecting rod are connected by screws.

[0014] Furthermore, the outer wall of the open chuck is provided with a connecting plate, the open chuck is engaged with the inner wall of the top of the magazine sleeve, and the connecting plate abuts against the top surface of the magazine sleeve.

[0015] In this invention, the bottom end of the sun gear shaft to be processed is positioned by a center, the clamping block is tightened by a connecting rod and a pull rod, and the sun gear shaft to be processed is clamped by the clamping block and the center, thus completing the positioning of both ends of the sun gear shaft, which facilitates the gear machining of the sun gear shaft. The side wall of the sun gear shaft is clamped and positioned by a spring clip clamping the open chuck, while preventing the sun gear shaft from deforming due to excessive clamping force at both ends, thus ensuring product quality. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention after clamping the sun gear axle.

[0018] Figure 3 This is a cross-sectional view of the center point and positioning plate of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the mounting fastener of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0020] Figure 5 This is a cross-sectional view of the middle positioning sleeve of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0021] Figure 6 This is a cross-sectional view of the connecting rod of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0022] Figure 7 This is a front view schematic diagram of the tie rod structure of a heavy truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0023] Figure 8 This is a top view schematic diagram of the tie rod structure of a heavy truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0024] Figure 9 This is a top view of the middle pad block of a heavy truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0025] Figure 10 This is a cross-sectional view of the middle pad block of a heavy truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0026] Figure 11 This is a top view of the middle sleeve of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0027] Figure 12 This is a cross-sectional view of the middle sleeve of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0028] Figure 13 This is a cross-sectional view of the middle base of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention;

[0029] Figure 14 This is a cross-sectional view of the mounting base of a heavy-duty truck sun gear axle gear clamp provided in an embodiment of the present invention.

[0030] Figure label:

[0031] 1. Positioning plate; 101. Clearance groove; 102. First through hole; 2. Base; 201. Positioning hole; 202. Locking screw; 203. Annular groove; 3. Mounting seat; 301. Locking hole; 302. Anti-rotation screw; 303. Annular clamping plate; 4. Mounting fastener; 401. Flange connecting plate; 402. Mounting rod; 5. Positioning sleeve; 501. Third threaded connection hole; 6. Connecting sleeve; 7. Magazine sleeve; 8. Open chuck; 9. Top; 901. First threaded connection hole; 10. Connecting rod; 1001. First threaded connector; 1002. Second threaded connection hole; 11. Pull rod; 1101. Second threaded connector; 1102. Clamping block; 110201. Locking block; 110202. Limiting protrusion; 12. Pad; 1201. First locking hole; 1202. Annular pressure plate; 13. Sleeve; 1301. Second locking hole; 1302. Insertion hole. Detailed Implementation

[0032] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0034] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0035] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0036] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0037] Example:

[0038] Reference Figures 1-14 As shown, a heavy-duty truck sun gear axle gear clamp includes a base 2 and a mounting base 3. Both the base 2 and the mounting base 3 are cylindrical structures. The bottom end of the base 2 is provided with a positioning component, and the top end is connected to the mounting base 3. The positioning component includes a positioning plate 1. The top surface of the positioning plate 1 is provided with a positioning sleeve 5 and a center point 9. The bottom surface is provided with a mounting fastener 4 corresponding to the center point 9. The center point 9 is a frustum-shaped structure located inside the positioning sleeve 5. Its top surface is provided with a connecting rod 10. The top end of the connecting rod 10 is threadedly connected to a pull rod 11. The top end of the pull rod 11 is fitted with a sleeve 13 to facilitate the rotation of the pull rod 11. The side is provided with a clamping block 1102 and a pad block 12 for clamping the sun gear axle to be processed. The positioning sleeve 5 is provided with a connecting sleeve 6. The connecting sleeve 6 is threadedly connected with a spring clip sleeve 7. The spring clip sleeve 7 is locked in the mounting base 3, and the top opening of the spring clip sleeve 7 is provided with an open chuck 8. The top end of the pull rod 11 passes through the open chuck 8.

[0039] The processed sun gear shaft is fitted onto the pull rod 11 and the connecting rod 10. The bottom end of the sun gear shaft is positioned by the pin. The pull rod 11 is threadedly connected to the connecting rod 10. By rotating the pull rod 11, the clamping block 1102 at the top of the pull rod 11 presses against the pad block 12. The pad block 12 then clamps the processed sun gear shaft between the pad block 12 and the pin 9. The sleeve 13 at the top of the pull rod 11 allows the worker to rotate the pull rod 11 to adjust the engagement length of the threaded connection between the pull rod 11 and the connecting rod 10, thereby clamping or loosening the sun gear shaft.

[0040] The magazine sleeve 7 is threadedly connected to the connecting sleeve 6. By rotating the magazine sleeve 7, the clamping force of the magazine sleeve 7 on the open chuck 8 is adjusted, thereby clamping the side of the sun gear shaft to be processed through the open chuck 8, preventing the sun gear shaft from shaking during the gear turning process, affecting the machining accuracy of the teeth, and ensuring product quality.

[0041] Mounting fastener 4 is used to connect with the stretching head of an external gear turning machine. The stretching head pulls the mounting fastener 4 closer, thereby fixing the fixture on the worktable of the gear turning machine.

[0042] The bottom end of the sun gear shaft is supported and positioned by the tip 9, and the top end of the sun gear shaft is pressed by the clamping block 1102 at the end of the pull rod 11, thereby clamping the sun gear shaft between the tip 9 and the pad 12. The side of the sun gear shaft is clamped and positioned by the spring clip 7 pressing the open chuck 8, thereby positioning the sun gear shaft in the horizontal and vertical directions, ensuring the accuracy of the sun gear shaft positioning and the stability of the positioning structure.

[0043] The top surface of the tip 9 is provided with a first threaded connection hole 901. One end of the connecting rod 10 is provided with a second threaded connection hole 1002, and the other end is provided with a first threaded connector 1001 that matches the first threaded connection hole 901. One end of the pull rod 11 is provided with a second threaded connector 1101 that matches the second threaded connection hole 1002, and the other end is provided with a clamping block 1102 near the end. The clamping block 1102 includes a circular locking block 110201. Multiple limiting protrusions 110202 are evenly provided on the outer wall of the locking block 110201. The distance between the limiting protrusions 110202 and the circle of the clamping block 1102 is less than the inner diameter of the machined sun gear shaft.

[0044] The connecting rod 10 is threadedly connected to the first threaded connection hole 901 on the top surface of the tip 9 via the first threaded connector 1001, so that the connecting rod 10 and the tip 9 are connected together. The pull rod 11 is threadedly connected to the second threaded connection hole 1002 at the end of the connecting rod 10 via the second threaded connector 1101, so that the pull rod 11 and the connecting rod 10 are connected together. By rotating the pull rod 11, the engagement length of the threaded connection between the pull rod 11 and the connecting rod 10 can be adjusted.

[0045] The distance between the limiting protrusion 110202 and the circle of the clamping block 1102 is less than the inner diameter of the machined sun gear shaft, ensuring that the sun gear shaft can pass through the clamping block 1102 and be fitted onto the pull rod 11 and the connecting rod 10.

[0046] The pad 12 has a first locking hole 1201 in the middle that matches the clamping block 1102, and an annular pressure plate 1202 on the top side wall. The outer diameter of the annular pressure plate 1202 is larger than the inner diameter of the machined sun gear shaft. The sleeve 13 has a second locking hole 1301 in the middle that matches the clamping block 1102, and an insertion hole 1302 on the side wall.

[0047] The pad 12 passes through the clamping block 1102 through the first locking hole 1201. Then, the pad 12 is rotated so that the first locking hole 1201 on the pad 12 is misaligned with the clamping block 1102, thereby clamping the pad 12 through the clamping block 1102. The outer diameter of the annular pressure plate 1202 is larger than the inner diameter of the processed sun gear shaft, ensuring that the pad 12 can clamp the processed sun gear shaft. The sleeve 13 is sleeved on the end of the pull rod 11, and the second locking hole 1301 is locked on the clamping block 1102. The second locking hole 1301 cooperates with the clamping block 1102 to prevent the sleeve 13 from rotating on the pull rod 11, so that the sleeve 13 can drive the pull rod 11 to rotate. A rotating rod can be inserted into the insertion hole 1302 on the side wall of the sleeve 13. The worker rotates the sleeve 13 by rotating the rotating rod, thereby rotating the connecting rod 10, thereby clamping or loosening the sun gear shaft.

[0048] The outer side wall of the top of the magazine 7 is an inverted trapezoidal structure, and the inner side wall of the top of the mounting base 3 is a matching bevel.

[0049] On the one hand, it facilitates the magazine sleeve 7 to be locked in the mounting base 3. On the other hand, since the magazine sleeve 7 is threadedly connected to the connecting sleeve 6, as the magazine sleeve 7 is screwed into the mounting base 3, it will press the magazine sleeve 7, causing the magazine sleeve 7 to contract. The contraction of the magazine sleeve 7 will press the open chuck 8, thereby enabling the open chuck 8 to lock the side of the sun gear shaft and clamp and position the sun gear shaft.

[0050] The base 2 has an annular groove 203 on the inner side wall of the top end, and a positioning hole 201 is provided on the side wall corresponding to the annular groove 203. The mounting base 3 has an annular plate 303 at the bottom end that matches the annular groove 203. A locking screw 202 is provided in the positioning hole 201 and abuts against the annular plate 303. The mounting base 3 has a locking hole 301 on the side wall, and an anti-rotation screw 302 is provided in the locking hole 301 and abuts against the side wall of the magazine sleeve 7.

[0051] Mounting base 3 is connected to base 2 by an annular retaining plate 303 being secured in an annular groove 203. Locking screws 202 prevent the annular retaining plate 303 from falling out of the annular groove 203, thus improving the stability of the connection structure between mounting base 3 and base 2. Anti-rotation screws 302 on the side of mounting base 3 prevent the spring clip 7 from rotating within mounting base 3, thereby preventing the sun gear shaft from rotating under force, ensuring the stability of sun gear shaft positioning, and ensuring processing quality.

[0052] The bottom surface of the positioning plate 1 has a clearance groove 101 corresponding to the position of the tip 9. The mounting fastener 4 includes a flange connecting plate 401 and a mounting rod 402. The flange connecting plate 401 is fixed to the bottom surface of the clearance groove 101 by screws. The mounting rod 402 is vertically fixed in the middle of the side of the flange connecting plate 401 facing away from the tip 9.

[0053] When the fixture is fixed on the worktable of the gear turning machine, the positioning plate 1 contacts the worktable of the gear turning machine. The relief groove 101 prevents the flange connecting plate 401 from affecting the contact between the positioning plate 1 and the worktable, thus ensuring the stability of the neck fixture fixed on the gear turning machine. The mounting rod 402 is connected to the tensioning head of the gear turning machine, enabling the tensioning head to tighten the fixture, further improving the stability of the fixture installation.

[0054] The bottom surface of the relief groove 101 is provided with a first through hole 102, and the positioning sleeve 5 is provided with a third threaded connection hole 501 corresponding to the position of the first through hole 102. A connecting bolt is provided in the first through hole 102, and the connecting bolt is threadedly connected to the third threaded connection hole 501.

[0055] After the connecting bolt passes through the first through hole 102, it is threadedly connected to the third threaded connecting hole 501, thereby connecting the positioning plate 1 and the positioning sleeve 5 together. The connecting sleeve 6 is connected to the positioning sleeve 5 by screws, thereby positioning the connecting sleeve 6. The connecting sleeve 6 is threadedly connected to the magazine sleeve 7, thereby positioning the bottom end of the magazine sleeve 7 and facilitating the movement of the magazine sleeve 7 within the mounting base 3. The clamping force of the magazine sleeve 7 on the open chuck 8 is adjusted, thereby causing the open chuck 8 to press or release the sun gear shaft.

[0056] The base 2 and the mounting base 3 are connected by screws, the base 2 and the positioning plate 1 are connected by screws, the connecting sleeve 6 and the positioning sleeve 5 are connected by screws, and the tip 9 and the connecting rod 10 are connected by screws.

[0057] The screw connection facilitates the assembly and disassembly of the fixture, and allows for flexible adjustment and positioning.

[0058] The open chuck 8 has a connecting plate on its outer side wall. The open chuck 8 is secured to the inner side wall of the top of the magazine sleeve 7, while the connecting plate abuts against the top surface of the magazine sleeve 7. This facilitates the installation and fixation of the open chuck 8. When the magazine sleeve 7 retracts, it clamps the open chuck 8 to the sun gear shaft. When the magazine sleeve 7 expands, the open chuck 8 automatically expands, releasing the clamping force on the sun gear shaft.

[0059] In use, the flange connecting plate 401 is connected to the positioning cylinder with bolts, simultaneously positioning the flange connecting plate 401 and the positioning sleeve 5. The positioning plate 1 is fixed to the worktable of the gear turning machine with bolts, and the mounting rod 402 on the flange connecting plate 401 is connected to the stretching head of the gear turning machine. The connecting sleeve 6 is fixed to the positioning sleeve 5 with bolts, and the connecting rod 10 is threaded onto the top surface of the center 9. Alternatively, screws can be used for connection. The base 2 is fixed to the upper surface of the positioning plate 1 with bolts, and then the mounting base... 3. Fix the base 2 with screws, then thread the pull rod 11 to the top of the connecting rod 10, and thread the magazine sleeve 7 to the connecting sleeve 6. Then, fit the machined sun gear shaft onto the pull rod 11, with the bottom end of the sun gear shaft abutting against the center 9. Then, install the open chuck 8 on the inner side wall of the top of the magazine sleeve 7. Then, pass the pad block 12 through the clamping block 1102 and fit it onto the pull rod 11, located below the clamping block 1102. Then, fit it onto the end of the pull rod 11 through the sleeve 13. By rotating the sleeve 13, the pull rod 11 will rotate, causing the pull rod 11 to... The increased engagement length between the pull rod 11 and the connecting rod 10 causes the clamping block 1102 on the pull rod 11 to move towards the tip 9, thereby pressing the clamping block 1102 against the pad 12. This misaligns the first locking hole 1201 on the pad 12 with the clamping block 1102, thus pressing the sun gear shaft onto the tip 9 via the pad 12. Then, the magazine sleeve 7 is rotated, causing it to move towards the connecting sleeve 6, increasing the engagement length between the magazine sleeve 7 and the connecting sleeve 6. Since the top sidewall of the magazine sleeve 7 has an inverted trapezoidal structure, the magazine sleeve 7 moves downwards... Simultaneously, the magazine sleeve 7 will retract towards the center, which in turn will cause the open chuck 8 to retract towards the center, thereby clamping and positioning the sun gear shaft sidewall with the open chuck 8, thus completing the horizontal and vertical positioning of the sun gear shaft. After removing the sleeve 13, the sun gear shaft can be machined. After machining, the sleeve 13 is placed on the pull rod 11. By rotating the sleeve 13 in the opposite direction, the pull rod 11 is loosened, the pad is removed, and then the magazine sleeve 7 is rotated in the opposite direction to loosen the open chuck 8, so that the machined sun gear shaft can be removed.

[0060] In practical use, the side of the connecting rod 10 connected to the tip 9 has an opening groove. The side of the groove has a second through hole along the length of the connecting rod 10. The top surface of the tip 9 has a threaded hole corresponding to the second through hole. After the bolt passes through the second through hole on the connecting rod 10, it is threadedly connected to the threaded hole, which improves the stability of the connection structure between the connecting rod 10 and the tip 9 and prevents the connecting rod 10 from rotating when the pull rod 11 is rotated.

[0061] The tip 9 and the positioning plate 1 are integrally formed, which improves the stability of the position structure of the tip 9 and facilitates the production and processing.

[0062] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A heavy duty card sun gear axle tooth clamp, characterized in that, The device includes a base and a mounting base, both of which are cylindrical structures. The base has a positioning component at its bottom and is connected to the mounting base at its top. The positioning component includes a positioning plate, a positioning sleeve and a center on the top surface of the positioning plate, and a mounting fastener on the bottom surface corresponding to the center. The center is a frustum-shaped structure located inside the positioning sleeve, and has a connecting rod on its top surface. A pull rod is threaded to the top of the connecting rod, and a sleeve for rotating the pull rod is fitted on the top of the pull rod. A clamping block and a pad are provided on the side for pressing the sun gear shaft to be processed. A connecting sleeve is provided on the positioning sleeve, and a spring clip is threaded to the connecting sleeve. The spring clip is locked inside the mounting base, and an open chuck is provided at the top opening of the spring clip. The top of the pull rod passes through the open chuck.

2. The heavy truck sun gear tooth axle clamp of claim 1, wherein, The top surface of the tip is provided with a first threaded connection hole, one end of the connecting rod is provided with a second threaded connection hole, and the other end is provided with a first threaded connector that matches the first threaded connection hole. One end of the pull rod is provided with a second threaded connector that matches the second threaded connection hole, and the other end is provided with a clamping block near the end. The clamping block includes a circular locking block. The outer wall of the locking block is uniformly provided with multiple limiting protrusions. The distance between the limiting protrusions and the circle of the clamping block is less than the inner diameter of the machined sun gear shaft.

3. The heavy truck sun gear tooth fixture of claim 2, wherein, The pad has a first locking hole in the middle that matches the clamping block, and an annular pressure plate is provided on the top side wall. The outer diameter of the annular pressure plate is larger than the inner diameter of the sun gear shaft being machined. The sleeve has a second locking hole in the middle that matches the clamping block, and an insertion hole is provided on the side wall.

4. The heavy truck sun gear tooth fixture of claim 1, wherein, The outer wall of the top of the magazine sleeve has an inverted trapezoidal structure, and the inner wall of the top of the mounting base has a matching bevel.

5. The heavy truck sun gear tooth fixture of claim 1, wherein, The base has an annular groove on its top inner sidewall, and a positioning hole is provided on the sidewall corresponding to the position of the annular groove. The bottom of the mounting base has an annular plate that matches the annular groove. A locking screw is provided in the positioning hole and abuts against the annular plate. The mounting base has a locking hole on its sidewall, and an anti-rotation screw is provided in the locking hole and abuts against the sidewall of the magazine sleeve.

6. The heavy truck sun gear tooth fixture of claim 1, wherein, The bottom surface of the positioning plate has a clearance groove corresponding to the top point. The mounting fastener includes a flange connecting plate and a mounting rod. The flange connecting plate is fixed to the bottom surface of the clearance groove with screws. The mounting rod is vertically fixed in the middle of the side of the flange connecting plate facing away from the top point.

7. The heavy truck sun gear tooth fixture of claim 6, wherein, The bottom surface of the relief groove is provided with a first through hole, and the positioning sleeve is provided with a third threaded connection hole corresponding to the position of the first through hole. A connecting bolt is provided in the first through hole, and the connecting bolt is threadedly connected to the third threaded connection hole.

8. A heavy-duty truck sun gear axle gear clamp according to claim 1, characterized in that, The base and the mounting base are connected by screws, the base and the positioning plate are connected by screws, the connecting sleeve and the positioning sleeve are connected by screws, and the top point and the connecting rod are connected by screws.

9. A heavy-duty truck sun gear axle gear clamp according to claim 1, characterized in that, The outer wall of the open chuck is provided with a connecting plate. The open chuck is locked onto the inner wall of the top of the magazine sleeve, while the connecting plate abuts against the top surface of the magazine sleeve.

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