Bevel gear aligning assembly tool

Abstract

The invention provides a helical gear aligning assembly tool, and belongs to the technical field of gear machining. The bevel gear is placed on the adjusting table with the positioning pin, the middle movable plate which can ascend and descend and is provided with the inner gear ring for installing and positioning the pinion is arranged above the adjusting table, and meanwhile the adjusting driving piece with the positioning teeth is arranged on the side of the adjusting table so that the angle of the bevel gear can be adjusted. Meanwhile, the middle movable plate is pressed downwards so that the inner gear ring can directly face the positioning pin, and therefore after a mounting shaft of the small gear located by the inner gear ring is aligned with a center hole of the bevel gear, the small gear is pressed downwards through a press machine so that tooth alignment assembly of the small gear and the bevel gear can be achieved, and only the small gear and the bevel gear can be fed in the whole assembly process; the middle movable plate and other structures do not need to be assembled, the assembling precision is guaranteed, the product quality is improved, meanwhile, bevel gear angle adjustment and middle movable plate descending are synchronously achieved, the assembling efficiency is improved, and the large-scale machining requirement is met.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, specifically to a helical gear tooth assembly fixture. Background Technology

[0002] A double gear is a transmission component consisting of two gears. It is typically used in transmission systems that transmit large torques or change the direction of transmission to achieve efficient transmission. It is widely used and favored by the market.

[0003] Currently, the common method for machining double gears is to first machine a large ring-shaped gear, and then machine a small gear with a mounting shaft. During assembly, the mounting shaft of the small gear is inserted into the center hole of the large gear with an interference fit to achieve the assembly of the double gear. Existing tooling for machining double gears typically includes a double gear assembly tooling and assembly method disclosed in patent application CN111250926A. This tooling involves a base and a top cover arranged parallel vertically, with multiple sets of vertical support guide pillars between them. Guide holes for nested support guide pillars are provided on both the base and top cover. Simultaneously, assembly through holes are correspondingly opened at the center of the base and top cover. An assembly groove for mounting the large gear is provided on the upper surface of the base. Gear positioning mechanisms are correspondingly provided on the inner ring of the assembly groove on the base and the inner ring of the assembly through hole on the top cover. In use, the large gear is placed in the large gear assembly groove on the base and positioned using the gear positioning mechanism. Then, the top cover is installed on the support guide pillars. Next, the small gear is placed in the assembly through hole on the top cover and positioned using the gear positioning mechanism, aligning the small gear with the large gear. Finally, the assembly is completed by pressing down. Although the above tooling can meet the assembly requirements, in actual operation, the top cover needs to be reinstalled every time. After long-term and frequent use, in addition to wear between the large gear and the base and between the small gear and the top cover, the top cover and the support guide post will also become loose, which will cause errors in the assembly position between the small gear and the large gear, affecting the assembly accuracy, easily leading to product defects, and making it inconvenient for large-scale processing. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention aims to provide a helical gear assembly fixture. This fixture includes an adjustment table, a lifting frame, and an adjustment drive component. The lifting frame is positioned above the adjustment table. The adjustment drive component moves closer to or away from the adjustment table, and during the approach process, it can press down on the lifting frame. The helical gear is placed through the adjustment table, and the pinion is placed through the lifting frame. Simultaneously, as the adjustment drive component approaches the adjustment table, the angle of the helical gear is adjusted to correspond with the angle of the pinion on the lifting frame, ensuring that the pinion and helical gear are aligned. Finally, pressing down on the pinion completes the assembly. The entire process only requires loading and unloading the helical gear, pinion, and assembled double gear; there are no other moving assembly parts, thus ensuring assembly accuracy, product quality, and facilitating large-scale processing.

[0005] The specific technical solution is as follows: A helical gear tooth-pairing assembly fixture has the following features: Base frame; An adjustment table is located at one end of the base frame. The adjustment table has a positioning pin, and the center hole of the helical gear to be assembled is fitted onto the positioning pin. The lifting frame is located at one end of the base frame where an adjustment platform is provided. The lifting frame includes a middle movable plate, which is located above the adjustment platform and moves vertically. The middle movable plate is provided with an internal gear ring for placing and positioning the pinion, and in the vertical direction, the internal gear ring and the positioning pin are arranged coaxially. The adjustment drive is mounted on the base frame and located at the end opposite to the adjustment table. The adjustment drive includes a telescopic actuator, a sliding component, a pressing component, a pressing inclined frame, and a positioning gear. The sliding component is arranged horizontally and reciprocates towards or away from the adjustment table. The two ends of the telescopic actuator are connected to the base frame and the sliding component, respectively. The pressing component is located on the side of the sliding component near the adjustment table. The pressing inclined frame is mounted on the middle movable plate. The side of the pressing inclined frame near the sliding component is arranged at an angle, and the angle is such that the lower end of the pressing inclined frame is closer to the sliding component. The positioning gear is located at the end of the sliding component near the adjustment table.

[0006] The aforementioned helical gear assembly fixture includes a lifting frame that further comprises a guide rod and a return spring. The lower end of the guide rod is fixed to the base frame, and the intermediate movable plate is slidably sleeved on the guide rod. A return spring is provided on the guide rod and located between the intermediate movable plate and the base frame.

[0007] The aforementioned helical gear tooth assembly fixture includes a sliding component comprising a guide rail, a slider, and a support frame. The guide rail is arranged radially along the positioning pin, the slider is slidably mounted on the guide rail, the positioning gear is mounted on the end of the slider near the adjustment table, the support frame is mounted on the slider, and the pressing component is mounted on the support frame.

[0008] In the aforementioned helical gear assembly fixture, the internal gear ring and the intermediate movable plate are detachably connected. The intermediate movable plate has a mounting hole in the middle, and several connecting holes are provided on the intermediate movable plate next to the mounting hole. The internal gear ring is installed in the mounting hole, and an outwardly extending mounting edge is provided on the outer wall of the internal gear ring. Several mating holes corresponding to the connecting holes are provided on the mounting edge.

[0009] The aforementioned helical gear assembly fixture includes an adjustment table that further comprises a pad and a floating spring. The pad is fixedly mounted on the base frame. A floating hole is formed on the pad along the vertical direction, and the upper end of the floating hole has a constricted opening. A protruding retaining edge is provided on the lower outer wall of the positioning pin. The upper end of the positioning pin passes through the upper end of the floating hole to the top of the pad. The lower end of the positioning pin is slidably disposed in the floating hole. The floating spring is installed in the floating hole, and the upper end of the floating spring abuts against the lower end face of the positioning pin.

[0010] In the aforementioned helical gear tooth assembly fixture, a protrusion is provided on the upper end face of the locating pin, and the cross-sectional dimension of the protrusion is consistent with the hollow cross-sectional dimension of the mounting shaft of the pinion.

[0011] The aforementioned helical gear tooth assembly fixture further includes a marking component. The marking component includes several marking pins. Several insertion holes are provided on the pad block and located next to the positioning pin. Each insertion hole contains a marking pin, and the tip of the marking pin is arranged upward and extends to the upper end face of the pad block.

[0012] The aforementioned helical gear assembly fixture further includes a support roller assembly. The support roller assembly is disposed on a central movable plate and located below the internal gear ring. The support roller assembly includes a first bracket and a second bracket. The upper ends of the first bracket and the second bracket are both slidably disposed on the central movable plate along the radial direction of the internal gear ring. The first bracket and the second bracket are respectively disposed on both sides of the internal gear ring, and both of them have a support block extending toward the axis of the internal gear ring at their lower ends. When the first bracket and the second bracket are close together, the support block supports the bottom end face of the mounting shaft of the pinion. When the first bracket and the second bracket are separated, the support block separates from the bottom end face of the mounting shaft of the pinion.

[0013] The aforementioned helical gear tooth assembly fixture includes a return spring in the support roller assembly. The return spring is disposed between the first bracket and the second bracket and its two ends are respectively connected to the first bracket and the second bracket. The bottom end face of the support block that contacts the mounting shaft of the pinion is an inclined surface and abuts against the outer edge of the bottom end face of the mounting shaft.

[0014] The aforementioned helical gear tooth assembly fixture further includes a guide slide, which includes a ball and a limiting plate. A ball cavity is formed on the lower end face of the support block. The limiting plate is installed on the lower end face of the support block and covers the ball cavity. At the same time, a limiting hole is formed on the limiting plate at the part corresponding to the ball cavity. The ball is installed in the ball cavity and the lower end of the ball extends to the outside of the limiting hole.

[0015] The positive effects of the above technical solution are: The aforementioned helical gear assembly fixture uses an adjustment platform to hold the helical gear. Above the adjustment platform is a height-adjustable intermediate movable plate, on which an internal gear ring for mounting and positioning the pinion is placed. Simultaneously, an adjustment drive component is located beside the adjustment platform, moving closer or further away. By adjusting the positioning gear on the drive component to approach the helical gear, the angle of the helical gear is adjusted. Simultaneously, the intermediate movable plate is pressed down, causing the internal gear ring to descend to a predetermined height, improving assembly efficiency. The pinion is then placed in the internal gear ring for positioning, ensuring its mounting shaft aligns with the center hole of the helical gear. Finally, a press presses down on the pinion, forcing the mounting shaft into the center hole of the helical gear, fulfilling the gear assembly requirements. The entire assembly process involves only the loading of the helical gear and pinion, with no other moving assembly parts, thus ensuring assembly accuracy, product quality, and facilitating large-scale processing. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an embodiment of a helical gear tooth assembly fixture according to the present invention; Figure 2 This is a structural diagram of a lifting frame for a helical gear tooth assembly fixture according to the present invention; Figure 3 This is a structural diagram of an adjustment drive assembly for a helical gear tooth-pairing assembly fixture according to the present invention; Figure 4 This is a cross-sectional view of an adjustment table for a helical gear tooth assembly fixture according to the present invention. Figure 5 This is a cross-sectional view of a roller assembly of a helical gear tooth-pairing assembly tool according to the present invention.

[0017] In the attached diagram: 1. Base frame; 2. Adjustment platform; 21. Positioning pin; 22. Pad; 23. Floating spring; 24. Marking ejector pin; 211. Stop edge; 212. Protrusion; 221. Floating hole; 3. Helical gear; 4. Pinion; 5. Lifting frame; 51. Intermediate movable plate; 52. Internal gear ring; 53. Guide rod; 54. Return spring; 55. Upper seat plate; 521. Mounting edge; 6. Adjustment drive component; 61. Telescopic drive component; 62. Sliding component; 63. Pressing component; 64. Pressing inclined frame; 65. Positioning gear; 621. Guide rail; 622. Slider; 623. Support frame; 7. Roller assembly; 71. First bracket; 72. Second bracket; 73. Return spring; 74. Guide slide component; 711. Support block; 741. Ball bearing; 742. Limiting plate; 7111. Inclined surface. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 5The technical solutions provided by this invention are described in detail, but the following content is not intended to limit this invention.

[0019] Figure 1 This is a structural diagram of an embodiment of a helical gear tooth assembly fixture according to the present invention. Figure 1 As shown, the helical gear tooth assembly fixture provided in this embodiment includes: a base frame 1, an adjustment platform 2, a lifting frame 5, and an adjustment drive component 6.

[0020] Specifically, the base frame 1 is arranged horizontally and serves as the overall base for the assembly tooling, providing overall support.

[0021] Specifically, the adjusting platform 2 is positioned at one end of the base frame 1. The adjusting platform 2 has a positioning pin 21. The center hole of the helical gear 3 to be assembled is fitted onto the positioning pin 21. The positioning pin 21 provides an accurate placement reference for the helical gear 3, ensuring that the center hole of the helical gear 3 is aligned with the mounting shaft of the pinion 4 on the lifting frame 5. Furthermore, the positioning pin 21 also serves as the central pivot of the helical gear 3, providing the means to adjust the assembly angle of the helical gear 3 by rotating it subsequently.

[0022] Figure 2 This is a structural diagram of a lifting frame for a helical gear tooth assembly fixture according to the present invention. Figure 1 and Figure 2 As shown, the lifting frame 5 is positioned at one end of the base frame 1 where the adjusting platform 2 is located. At this time, the lifting frame 5 also includes an intermediate movable plate 51. The intermediate movable plate 51 is located above the adjusting platform 2 and moves vertically. The intermediate movable plate 51 is provided with an internal gear ring 52 for placing and positioning the pinion 4. In the vertical direction, the internal gear ring 52 and the positioning pin 21 are arranged coaxially to ensure that after the pinion 4 is placed through the internal gear ring 52 and the helical gear 3 is placed through the positioning pin 21, the pinion 4 can be arranged coaxially with the helical gear 3 when the intermediate movable plate 51 descends, thereby ensuring the accuracy of the assembly position and ensuring product quality.

[0023] Figure 3 This is a structural diagram of an adjustment drive assembly for a helical gear tooth-pairing assembly fixture according to the present invention. Figure 1 , Figure 2 as well as Figure 3As shown, the adjustment drive component 6 is mounted on the base frame 1 at one end away from the adjustment platform 2. The adjustment drive component 6 includes a telescopic actuator 61, a sliding component 62, a pressing component 63, a pressing inclined frame 64, and a positioning gear 65. The sliding component 62 is arranged horizontally and reciprocates towards or away from the adjustment platform 2, providing conditions for adjusting the angle of the helical gear 3 and pressing down the intermediate movable plate 51 after approaching the adjustment platform 2. At this time, both ends of the telescopic actuator 61 are connected to the base frame 1 and the sliding component 62 respectively, that is, the telescopic actuator 61 provides driving force for the reciprocating motion of the sliding component 62. In addition, a pressing component 63 is provided on the side of the sliding component 62 near the adjustment platform 2, so that the pressing component 63 can follow the sliding component 62 towards or away from the adjustment platform 2. Furthermore, the pressing inclined frame 64 is installed on the intermediate movable plate 51, so that the pressing inclined frame 64 can drive the intermediate movable plate 51 to rise and fall, providing force for the descent of the intermediate movable plate 51. At this time, the side of the downward pressure bracket 64 closest to the sliding member 62 is arranged at an angle, and the direction of the angle is such that the lower end of the downward pressure bracket 64 is closer to the sliding member 62. This allows the sliding member 62 to first contact the lower end of the downward pressure bracket 64 through the downward pressure member 63 when the sliding member 62 is moved toward the adjustment table 2. As the distance between the sliding member 62 and the adjustment table 2 decreases, the downward pressure member 63 gradually presses the inclined surface of the downward pressure bracket 64, causing the downward pressure bracket 64 to move downward, thereby driving the middle movable plate 51 to descend. Conversely, the downward pressure member 63 gradually relaxes the downward pressure bracket 64, allowing the middle movable plate 51 to be reset later. Furthermore, positioning gear 65 is positioned at the end of sliding member 62 near adjusting table 2. This allows sliding member 62 to move towards adjusting table 2, enabling the intermediate movable plate 51 to descend through the cooperation of pressing member 63 and pressing bracket 64. Simultaneously, positioning gear 65 contacts and pushes helical gear 3 on adjusting table 2, adjusting its angle. This ensures the relative angle between helical gear 3 and pinion 4 on intermediate movable plate 51 meets design requirements, guaranteeing product quality. Moreover, the simultaneous adjustment of helical gear 3's angle and descent of intermediate movable plate 51 improves processing efficiency. During assembly, only helical gear 3 and pinion 4 need to be placed in adjusting table 2 and internal gear ring 52 respectively, and the entire product can be directly removed from adjusting table 2 after processing. With no other moving assembly parts, processing accuracy is ensured, processing efficiency is improved, and large-scale processing needs are better met. Preferably, the pressing member 63 is a roller, so that when the pressing member 63 contacts the inclined surface of the pressing bracket 64 and applies force to it, the rolling of the pressing member 63 can reduce wear, save effort and extend the service life of the structure.

[0024] In use, first, the helical gear 3 is directly fitted onto the positioning pin 21 on the adjustment table 2. Then, the telescopic driver 61 is activated to push the sliding member 62 toward the adjustment table 2. The pressing member 63 contacts the inclined surface of the pressing bracket 64 to drive the middle movable plate 51 to descend. After the middle movable plate 51 descends to a predetermined height, the positioning gear 65 on the sliding member 62 contacts the helical gear 3. As the sliding member 62 continues to move, the positioning gear 65 pushes the helical gear 3 to rotate, thereby adjusting the angle of the helical gear 3. At the same time, the pressing member 63 presses the middle movable plate 51 down to the end position. Then, the pinion 4 is installed into the internal gear ring 52. The teeth of the internal gear ring 52 and the teeth of the pinion 4 are engaged to position the angle of the pinion 4, so that the mounting shaft of the pinion 4 is coaxial with the helical gear 3 while maintaining the standard relative angle between the pinion 4 and the helical gear 3. Finally, the press presses down the pinion 4 so that the mounting shaft of the pinion 4 is inserted into the center hole of the helical gear 3, completing the product assembly. After assembly, the press is raised, the telescopic actuator 61 retracts, and the intermediate movable plate 51 rises, allowing the operator to remove the assembled product from the adjustment table 2.

[0025] More specifically, the lifting frame 5 includes not only the intermediate movable plate 51, but also a guide rod 53 and a return spring 54. The lower end of the guide rod 53 is fixed to the base frame 1, and the intermediate movable plate 51 is slidably sleeved on the guide rod 53. The guide rod 53 provides a stable support foundation for the installation of the intermediate movable plate 51 and also guides the lifting movement of the intermediate movable plate 51, maintaining its stability during the lifting process. Furthermore, a return spring 54 is installed on the guide rod 53 between the intermediate movable plate 51 and the base frame 1. This allows the intermediate movable plate 51 to descend under the action of the downward pressure bracket 64, and after the downward pressure member 63 moves away from the downward pressure bracket 64, the intermediate movable plate 51 can rise and return to its original position under the action of the return spring 54, awaiting the next assembly operation. It is worth noting that there are two guide rods 53, which are spaced apart and located on both sides of the adjusting table 2. The two ends of the middle movable plate 51 are slidably sleeved with the two guide rods 53, so that both ends of the middle movable plate 51 are supported, which further improves the stability of the middle movable plate 51 and ensures the processing accuracy. In addition, an upper seat plate 55 is provided between the upper ends of the two guide rods 53. The two ends of the upper seat plate 55 are fixedly connected to the upper ends of the two guide rods 53, that is, the upper ends of the two guide rods 53 are connected by the upper seat plate 55, so that the base frame 1, the two guide rods 53 and the upper seat plate 55 can form a frame structure, which further improves the stability of the guide rods 53. In addition, an avoidance hole is provided in the middle of the upper seat plate 55, and the avoidance hole is coaxially arranged with the internal gear ring 52 in the vertical direction, which provides the conditions for the press head of the subsequent press to contact and press down the pinion 4 after passing through the upper seat plate 55.

[0026] More specifically, the sliding component 62 of the adjustment drive component 6 includes a guide rail 621, a slider 622, and a support frame 623. The guide rail 621 is arranged radially along the positioning pin 21, and the slider 622 is slidably mounted on the guide rail 621. The guide rail 621 provides support and guidance for the smooth sliding of the slider 622. In addition, the positioning gear 65 is installed on the end of the slider 622 near the adjustment table 2, so that when the slider 622 moves, it can drive the positioning gear 65 to move closer to or away from the adjustment table 2, thereby realizing the approach or distance between the positioning gear 65 and the helical gear 3, meeting the angle adjustment requirements of the helical gear 3, and providing conditions for subsequent gear assembly. Furthermore, the support frame 623 is installed on the slider 622, and the pressing component 63 is installed on the support frame 623. That is, the support frame 623 provides support for the installation of the pressing component 63 on the slider 622, ensuring that the pressing component 63 has a certain height, which facilitates the contact between the pressing component 63 and the pressing inclined frame 64, making the structural design more reasonable. It is worth noting that the end of the housing of the telescopic actuator 61 is hinged to the base frame 1, and the drive shaft of the telescopic actuator 61 is connected to the slider 622. That is, the telescopic actuator 61 drives the slider 622 to slide on the guide rail 621 through its telescopic movement. Preferably, the telescopic actuator 61 is an electric push rod, which can provide more precise stroke control and ensure machining accuracy.

[0027] More specifically, the internal gear ring 52 and the intermediate movable plate 51 are detachably connected. In this case, a mounting hole is formed in the center of the intermediate movable plate 51. Simultaneously, several connecting holes are formed on the intermediate movable plate 51 beside the mounting hole. The internal gear ring 52 is installed in the mounting hole, and an outwardly extending mounting edge 521 is provided on the outer wall of the internal gear ring 52. The mounting edge 521 is arranged to fit against the upper surface of the intermediate movable plate 51, axially restricting the internal gear ring 52 within the mounting hole and preventing it from falling out. Furthermore, several mating holes corresponding to the connecting holes are formed on the mounting edge 521, and the mating holes and connecting holes are connected by connecting bolts. This achieves stable installation of the internal gear ring 52 on the intermediate movable plate 51, ensuring the stability of the internal gear ring 52's installation position. This, in turn, ensures the accurate angular position of the pinion 4, improving the precision of gear assembly. Additionally, by replacing the internal gear ring 52 with different sizes, it can adapt to the assembly requirements of different pinions 4, making the structure more flexible.

[0028] Figure 4 This is a cross-sectional view of an adjustment table for a helical gear tooth-pairing assembly fixture according to the present invention. Figure 1 and Figure 4As shown, the adjusting platform 2, which is equipped with the positioning pin 21, also includes a pad 22 and a floating spring 23. The pad 22 is fixedly installed on the base frame 1. A floating hole 221 is opened vertically on the pad 22, and the upper end of the floating hole 221 has a constricted structure, so that a limiting structure can be formed at the upper end of the floating hole 221. At the same time, a protruding retaining edge 211 is provided on the lower outer wall of the positioning pin 21. The retaining edge 211 forms a limiting structure at the lower end of the positioning pin 21, so that when the positioning pin 21 is installed on the pad 22, the upper end of the positioning pin 21 passes through the upper end of the floating hole 221 to the top of the pad 22, and the lower end of the positioning pin 21 slides in the floating hole 221. At this time, the retaining edge 211 can prevent the positioning pin 21 from coming out of the upper end of the floating hole 221, ensuring that the positioning pin 21 is reliably installed in the pad 22. Simultaneously, a floating spring 23 is installed inside the floating hole 221, with its upper end abutting against the lower end face of the locating pin 21. This provides a preload force for the locating pin 21 to extend beyond the pad 22, allowing the locating pin 21 to provide a positioning reference for the helical gear 3 to be assembled. Furthermore, compressing the floating spring 23 retracts the locating pin 21, providing clearance for the pinion 4's mounting shaft to be inserted into the center hole of the helical gear 3.

[0029] More specifically, a protrusion 212 is provided on the upper end face of the positioning pin 21. At this time, the cross-sectional dimension of the protrusion 212 is consistent with the hollow cross-sectional dimension of the mounting shaft of the pinion 4. This allows the pinion 4 to be accurately aligned with the positioning pin 21 by fitting the hollow mounting shaft of the pinion 4 onto the protrusion 212 at the upper end of the positioning pin 21 before the pinion 4 is placed in the internal gear ring 52 and pressed down by the press. This provides a condition for the mounting shaft of the pinion 4 to smoothly enter the center hole of the helical gear 3. It also allows the end face of the mounting shaft of the pinion 4 to directly abut against the upper end face of the positioning pin 21, thereby pressing down the positioning pin 21 and ensuring that the pinion 4 can enter the center hole of the helical gear 3 after installation. The structural design is more reasonable.

[0030] More specifically, the adjustment table 2 is also equipped with a marking assembly, which includes several marking pins 24. Furthermore, the pad 22 has several insertion holes located beside the positioning pin 21, each containing a marking pin 24. The tips of the marking pins 24 are arranged upwards and extend to the upper surface of the pad 22. This allows the helical gear 3 to be pressed down simultaneously when the mounting shaft of the pinion 4 is pressed into the center hole of the helical gear 3 using a press, so that the tips of the marking pins 24 can form a predetermined mark on the end face of the helical gear 3, facilitating subsequent installation of the assembled gear product.

[0031] Figure 5 This is a cross-sectional view of a roller assembly of a helical gear tooth-pairing assembly tool according to the present invention. Figure 1 , Figure 2 as well as Figure 5 As shown, a support roller assembly 7 is also provided on the intermediate movable plate 51 and below the internal gear ring 52, providing conditions for subsequently supporting the pinion 4 placed in the internal gear ring 52 and preventing the pinion 4 from falling out of the internal gear ring 52. The support roller assembly 7 includes a first bracket 71 and a second bracket 72. The upper ends of the first bracket 71 and the upper ends of the second bracket 72 are both slidably disposed on the intermediate movable plate 51 along the radial direction of the internal gear ring 52, so that the distance between the first bracket 71 and the second bracket 72 can be expanded or reduced, providing conditions for subsequently supporting or releasing the mounting shaft of the pinion 4. At this time, the first bracket 71 and the second bracket 72 are respectively disposed on both sides of the internal gear ring 52, and both of them are provided with a support block 711 extending toward the axis of the internal gear ring 52 at their lower ends. When the first bracket 71 and the second bracket 72 are close together, the support block 711 supports the bottom end face of the mounting shaft of the pinion 4. When the first bracket 71 and the second bracket 72 are separated, the support block 711 separates from the bottom end face of the mounting shaft of the pinion 4. That is, after the pinion 4 is placed into the internal gear ring 52, the pinion 4 can be supported by the support roller assembly 7 to prevent the pinion 4 from falling out. The internal gear ring 52 falls out, and the pinion 4 can be released through the support roller assembly 7 during the assembly of the pinion 4, ensuring that the mounting shaft of the pinion 4 is installed smoothly. This allows the pinion 4 to be installed in the internal gear ring 52 before the intermediate movable plate 51 descends, thus achieving synchronous feeding of the helical gear 3 and the pinion 4. It eliminates the need to wait until the intermediate movable plate 51 descends to the correct position before placing the pinion 4, which would otherwise only result in the placement of the pinion 4 being completed in the first step before the press is started. This ensures that the feeding of both the pinion 4 and the helical gear 3 can be completed in the first step, improving operational safety. It is worth noting that the bottom of the intermediate movable plate 51 is provided with a sliding groove, and the upper ends of the first bracket 71 and the second bracket 72 are slidably disposed in the sliding groove. That is, the first bracket 71 and the second bracket 72 are connected and guided to move through the sliding groove, which ensures the stability of the first bracket 71 and the second bracket 72 when they move. In addition, since the structure of connecting and moving through the sliding groove is common in the market and mature in application, it is common knowledge in the field of mechanical connection. Therefore, the specific sliding connection structure of the first bracket 71 and the second bracket 72 on the intermediate movable plate 51 will not be described in detail here.

[0032] More specifically, the roller assembly 7 also has a return spring 73, which is positioned between the first bracket 71 and the second bracket 72, with both ends connected to the first bracket 71 and the second bracket 72 respectively. That is, after the first bracket 71 and the second bracket 72 move away from each other, the return spring 73 can pull the first bracket 71 and the second bracket 72 closer together, restoring their positions to prepare for supporting the next pinion 4. In addition, the bottom end face of the support block 711 that contacts the mounting shaft of the pinion 4 is an inclined surface 7111 and abuts against the outer edge of the bottom end face of the mounting shaft. This allows the outer edge of the bottom end face of the mounting shaft to press outward against the inclined surface 7111 when the pinion 4 is pressed down, thus pushing the first bracket 71 and the second bracket 72 apart, thereby meeting the usage requirements of the roller assembly 7 to release the pinion 4. It is worth noting that since the support block 711 only contacts the outer edge of the bottom end face of the mounting shaft, the actual travel of the first support 71 and the second support 72 is small after the first support 71 and the second support 72 are opened. As a result, the spring force generated by the return spring 73 is small, so that when the assembled product is taken out, only the small spring force of the return spring 73 needs to be overcome, thus ensuring smooth unloading.

[0033] More specifically, both the bottom of the first bracket 71 and the second bracket 72 are provided with guide slides 74. At this time, the guide slide 74 includes a ball 741 and a limiting plate 742. A ball cavity is formed on the lower end face of the support block 711, and the limiting plate 742 is installed on the lower end face of the support block 711 and covers the ball cavity. At the same time, a limiting hole is formed on the limiting plate 742 corresponding to the part of the ball cavity, so that when the limiting plate 742 is installed on the support block 711, the ball cavity can form a chamber with a limiting hole. At this time, the ball 741 is installed in the ball cavity and the lower end of the ball 741 extends to the outside of the limiting hole. That is, the limiting plate 742 restricts the ball 741 on the support block 711, preventing the ball 741 from falling off. At the same time, when the support block 711 is squeezed, the bottom of the support block 711 can contact the upper end face of the helical gear 3 through the ball 741, avoiding the problem of the support block 711 being difficult to slide after twisting. The structural design is more reasonable.

[0034] The helical gear assembly fixture provided in this embodiment includes a base frame 1, an adjusting platform 2, a lifting frame 5, and an adjusting drive component 6. The helical gear 3 is placed on the adjusting platform 2, which has a positioning pin 21. A central movable plate 51, which is adjustable and has an internal gear ring 52 for mounting and positioning a pinion 4, is located above the adjusting platform 2. The adjusting drive component 6 is positioned beside the adjusting platform 2, either close to or away from it, and has a positioning gear 65 to adjust the angle of the helical gear 3. Simultaneously, the central movable plate 51 is pressed down to adjust the angle of the internal gear ring 52 and... The positioning pin 21 is aligned so that the mounting shaft of the pinion 4, which is positioned by the internal gear ring 52, is aligned with the center hole of the helical gear 3 and the relative angle between the two is ensured. Finally, the pinion 4 is pressed down by the press to realize the tooth assembly of the pinion 4 and the helical gear 3. The entire assembly process only involves the loading operation of the pinion 4 and the helical gear 3. There is no need to assemble the intermediate movable plate 51 and other structures, which ensures the assembly accuracy and improves the product quality. At the same time, it also enables the synchronous realization of the angle adjustment of the helical gear 3 and the descent of the intermediate movable plate 51, which improves the assembly efficiency and meets the needs of large-scale processing.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A helical gear tooth pairing assembly fixture, characterized in that, include: Base frame; An adjustment table is provided at one end of the base frame. The adjustment table has a positioning pin, and the center hole of the helical gear to be assembled is fitted onto the positioning pin. The lifting frame is located at one end of the base frame where the adjustment platform is provided. The lifting frame includes a middle movable plate, which is located above the adjustment platform and moves vertically. The middle movable plate is provided with an internal gear ring for placing and positioning the pinion, and in the vertical direction, the internal gear ring is coaxially arranged with the positioning pin. An adjustment drive is provided, which is mounted on the base frame and located at the end opposite to the adjustment table. The adjustment drive includes a telescopic driver, a sliding member, a pressing member, a pressing inclined frame, and a positioning gear. The sliding member is arranged horizontally and reciprocates towards or away from the adjustment table. The two ends of the telescopic driver are connected to the base frame and the sliding member, respectively. The pressing member is located on the side of the sliding member closest to the adjustment table. The pressing inclined frame is mounted on the intermediate movable plate. The side of the pressing inclined frame closest to the sliding member is arranged at an angle, with the lower end of the pressing inclined frame closer to the sliding member. The positioning gear is located at the end of the sliding member closest to the adjustment table.

2. The helical gear tooth assembly fixture according to claim 1, characterized in that, The lifting frame also includes a guide rod and a return spring. The lower end of the guide rod is fixed to the base frame. The intermediate movable plate is slidably sleeved on the guide rod. The return spring is provided on the guide rod and located between the intermediate movable plate and the base frame.

3. The helical gear tooth assembly fixture according to claim 1, characterized in that, The sliding component includes a guide rail, a slider, and a support frame. The guide rail is arranged radially along the positioning pin. The slider is slidably mounted on the guide rail. The positioning gear is mounted on the end of the slider near the adjustment table. The support frame is mounted on the slider, and the pressing component is mounted on the support frame.

4. The helical gear tooth assembly fixture according to claim 1, characterized in that, The internal gear ring and the intermediate movable plate are detachably connected. The intermediate movable plate has a mounting hole in the middle. At the same time, the intermediate movable plate has several connecting holes on the side of the mounting hole. The internal gear ring is installed in the mounting hole. The outer side wall of the internal gear ring has an outwardly extending mounting edge. The mounting edge has several mating holes corresponding to the connecting holes.

5. The helical gear tooth assembly fixture according to claim 1, characterized in that, The adjustment platform also includes a pad and a floating spring. The pad is fixedly installed on the base frame. A floating hole is opened on the pad along the vertical direction, and the upper end of the floating hole has a constricted structure. A protruding retaining edge is provided on the lower outer wall of the positioning pin. The upper end of the positioning pin passes through the upper end of the floating hole to the top of the pad. The lower end of the positioning pin is slidably disposed in the floating hole. The floating spring is installed in the floating hole, and the upper end of the floating spring abuts against the lower end face of the positioning pin.

6. The helical gear tooth assembly fixture according to claim 1, characterized in that, A protrusion is provided on the upper end face of the positioning pin, and the cross-sectional dimension of the protrusion is consistent with the hollow cross-sectional dimension of the mounting shaft of the pinion.

7. The helical gear tooth assembly fixture according to claim 5, characterized in that, It also includes a marking assembly, which includes several marking pins. Several insertion holes are provided on the pad and next to the positioning pin. Each insertion hole is equipped with a marking pin, and the tip of the marking pin is arranged upward and extends to the upper end face of the pad.

8. The helical gear tooth assembly fixture according to claim 1, characterized in that, It also includes a roller assembly, which is disposed on the intermediate movable plate and located below the internal gear ring. The roller assembly includes a first bracket and a second bracket. The upper ends of the first bracket and the second bracket are both slidably disposed on the intermediate movable plate along the radial direction of the internal gear ring. The first bracket and the second bracket are respectively disposed on both sides of the internal gear ring, and both of them are provided with a support block extending toward the axis of the internal gear ring at their lower ends. When the first bracket and the second bracket are close together, the support block supports the bottom end face of the mounting shaft of the pinion. When the first bracket and the second bracket are separated, the support block separates from the bottom end face of the mounting shaft of the pinion.

9. The helical gear tooth-pairing assembly fixture according to claim 8, characterized in that, The roller assembly also includes a return spring, which is disposed between the first bracket and the second bracket and its two ends are respectively connected to the first bracket and the second bracket. The bottom end face of the support block that contacts the mounting shaft of the pinion is an inclined surface and abuts against the outer edge of the bottom end face of the mounting shaft.

10. The helical gear tooth assembly fixture according to claim 8, characterized in that, It also includes a guide slide, which includes a ball and a limiting plate. A ball cavity is formed on the lower end surface of the support block. The limiting plate is installed on the lower end surface of the support block and covers the ball cavity. At the same time, a limiting hole is formed on the limiting plate corresponding to the ball cavity. The ball is installed in the ball cavity and the lower end of the ball extends to the outside of the limiting hole.

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