Gear extruding tool for synchronizer gear ring

By designing the upper and lower sides in the squeeze workstor of the synchronizer gear to ensure that the synchronizer gear is uniform when the upper and lower ends of the ribs of the synchronizer's tooth are uniform, solving the unsuitable inverted cone in the existing technologies that are not qualified to qualify in the existing technologies. The problem improved the stability of processing and reduced the emergence of non -compatible products.

CN222403797UActive Publication Date: 2025-01-28CHONGQING QITONG AUTOMOBILE STARE PARTS CO LTD
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Patent Information

Application Number
CN202420955503.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2025-01-28
Estimated Expiration
2034-04-30

AI Technical Summary

Technical Problem

In the prior art, when the synchronizer ring is extruded, the upper and lower ends are unevenly subjected to stress, resulting in the inverted cone being unqualified.

Method used

Design a synchronizer gear of the gear of the tooth for the tooth worker, by setting up two steps on the lower seat and setting a step on the upper cover to ensure that the jar of the synchronizer can bear the squeeze force when the ends of the tooth is squeezed, thereby Implement uniform force.

Benefits of technology

Through this work, the synchronizer gear is uniform upper and lower ends when the teeth are squeezed, which improves the stability of the pooled cone processing, and reduces the appearance of non -fitting products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The gear burnishing tool comprises an upper cover, a lower seat, an upper installation assembly and a lower installation assembly, a lower stepped hole is formed in the lower seat in an up-and-down penetrating mode, a guide step and a placement step are arranged in the lower stepped hole in an up-and-down spaced mode, the placement step is used for placing the synchronizer gear ring, and the upper installation assembly and the lower installation assembly are connected through the guide step and the placement step. The inner diameter of the placing step is larger than the major diameter of the synchronizer gear ring internal spline, and the outer diameter of the placing step is matched with the maximum outer diameter of the synchronizer gear ring; an upper stepped hole is formed in the upper cover in an up-down penetrating mode, a pressing step is arranged at the position, close to the lower end, in the upper stepped hole, the inner diameter of the pressing step is matched with the maximum outer diameter of the synchronizer gear ring, and the distance between the pressing step and the bottom face of the upper cover is smaller than the height of the synchronizer gear ring. The upper end and the lower end of the synchronizer gear ring can be uniformly stressed during gear extrusion, so that the upper and lower back taper processing of the internal spline of the synchronizer gear ring is more stable, and the occurrence of unqualified products is reduced.
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Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, and in particular relates to a gear extrusion tooling for a synchronizer gear ring. Background Art

[0002] The synchronizer gear ring used as an automobile accessory has an inner spline on its inner ring, and both the upper and lower ends of the inner spline are provided with an inverted cone. In the prior art, the inverted cone is usually processed by extruding teeth. During processing, the synchronizer gear ring needs to be placed on the lower seat, and then the upper seat moves downward and presses on the top surface of the synchronizer gear ring to achieve the compression and fixation of the synchronizer gear ring, or directly compress the protrusion on the outer diameter of the synchronizer gear ring. Due to the use of extruding teeth for processing, when it is fixed by the above method, the upper end of the synchronizer gear ring is not subjected to force, and the force on the upper and lower ends of the synchronizer gear ring will be uneven, resulting in the unqualified inverted cone. Utility Model Content

[0003] The utility model intends to provide a gear extrusion tooling for a synchronizer gear ring, which ensures that the synchronizer gear ring is subjected to uniform force at both ends during gear extrusion, making the upper and lower inverted cone processing of the spline in the synchronizer gear ring more stable, thereby reducing the occurrence of defective products.

[0004] To this end, the technical solution adopted by the utility model is: a gear extrusion tool for a synchronizer gear ring, comprising an upper cover and a lower seat for fixing the synchronizer gear ring and located at the upper and lower sides of the synchronizer gear ring after placement, the upper cover is arranged on the gear extrusion machine through an upper mounting assembly, and the upper mounting assembly can move downward under the action of the gear extrusion machine, the lower seat is arranged on the gear extrusion machine through a lower mounting assembly, and the lower mounting assembly can translate under the action of the gear extrusion machine, a lower stepped hole is arranged through the upper and lower parts of the lower seat, a guide step and a placement step are arranged in the lower and upper intervals in the lower stepped hole, the placement step is used to place the synchronizer gear ring, and the inner diameter of the placement step is greater than the major diameter of the spline in the synchronizer gear ring, and the outer diameter of the placement step matches the maximum outer diameter of the synchronizer gear ring; an upper stepped hole is arranged through the upper and lower parts of the upper cover, a clamping step is arranged at a position close to the lower end of the upper stepped hole, the inner diameter of the clamping step matches the maximum outer diameter of the synchronizer gear ring, and the distance between the clamping step and the bottom surface of the upper cover is less than the height of the synchronizer gear ring.

[0005] As a preferred embodiment of the above scheme, the distance between the clamping step and the bottom surface of the upper cover, and the distance between the guide step and the placement step all match the height of the protrusion on the synchronizer ring gear, the outer diameter of the clamping step matches the outer diameter of the placement step, and the height of the placement step is higher than the height of the synchronizer ring gear groove.

[0006] Further preferably, the lower mounting assembly includes a translation assembly, a sliding base plate, a lower mounting seat and a main shaft, the sliding base plate is arranged on the translation assembly, the lower mounting seat is arranged on the sliding base plate through a bearing, the lower seat is arranged on the lower mounting seat, and the main shaft is provided with a rotating assembly for driving the main shaft to rotate after passing through the translation assembly, an extrusion gear for extruding an inverted cone is installed on the main shaft through an extrusion gear fixing assembly, and the translation assembly can drive the sliding base plate away from or close to the main shaft.

[0007] More preferably, the bearing is a cross roller bearing.

[0008] Further preferably, the extruded gear fixing assembly includes an extruded gear pressure plate, a positioning step for preventing the extruded gear from moving downward is provided on the main shaft, and the extruded gear pressure plate is sleeved on the main shaft and is used to prevent the extruded gear from moving upward.

[0009] Further preferably, the upper mounting assembly includes an upper mounting seat and a lower pressure assembly, the upper mounting seat is arranged on the lower pressure assembly, the upper cover is arranged on the upper mounting seat through a connecting block, the lower pressure assembly can drive the upper mounting seat and the upper cover to move up and down, and the lower pressure assembly is provided with a spindle fixing assembly for fixing the upper end of the spindle.

[0010] Further preferably, the main shaft fixing assembly includes an upper sleeve rotatably arranged below the lower pressure assembly, a clamping shaft is slidably arranged up and down in the upper sleeve, the lower end of the clamping shaft and the upper end of the main shaft are provided with protrusions and grooves that cooperate with each other to clamp, a sliding groove is axially arranged on the clamping shaft, a sliding shaft is arranged in the sliding groove, both ends of the sliding shaft are fixed on the upper sleeve, and a return spring located in the upper sleeve is arranged between the upper end of the clamping shaft and the upper sleeve.

[0011] Further preferably, a plurality of weight-reducing holes are provided on the connecting block.

[0012] The beneficial effects of the utility model are as follows: two steps are arranged on the lower seat, one step is arranged on the upper cover, and when the synchronizer gear ring is installed, the upper cover covers the outer side of the upper end of the synchronizer gear ring, so that the upper and lower ends of the synchronizer gear ring can withstand the tooth squeezing force, thereby ensuring that the upper and lower ends of the synchronizer gear ring are subjected to uniform force during tooth squeezing, making the upper and lower inverted cone processing of the spline in the synchronizer gear ring more stable, thereby reducing the occurrence of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional diagram of the utility model.

[0015] Figure 3 It is a schematic diagram of the upper cover in the utility model.

[0016] Figure 4 It is a schematic diagram of the lower seat in the utility model.

[0017] Figure 5 It is a schematic diagram of the connecting block in the utility model.

[0018] Figure 6 for Figure 1 Schematic diagram after installing the synchronizer ring gear.

[0019] Figure 7 for Figure 2 Schematic diagram after installing the synchronizer ring gear.

[0020] Figure markings: upper cover-1, upper stepped hole-1a, clamping step-1b, lower seat-2, lower stepped hole-2a, guide step-2b, placement step-2c, synchronizer ring gear-3, sliding base plate-4, lower mounting seat-5, main shaft-6, positioning step-6a, bearing-7, extrusion gear-8, extrusion gear pressure plate-9, upper mounting seat-10, upper sleeve-11, clamping shaft-12, sliding groove-12a, sliding shaft-13, return spring-14, connecting block-15, weight reduction hole-15a. DETAILED DESCRIPTION

[0021] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0022] like Figure 1-Figure 6 As shown, a gear extrusion tooling for a synchronizer gear ring is mainly composed of an upper cover 1, a lower seat 2, an upper mounting assembly and an upper mounting assembly. Among them, the upper cover 1 is set on the gear extrusion machine through the upper mounting assembly, and the upper mounting assembly can move downward under the action of the gear extrusion machine, and the lower seat is set on the gear extrusion machine through the lower mounting assembly, and the lower mounting assembly can translate under the action of the gear extrusion machine. When the synchronizer gear ring 3 is placed, the upper cover 1 and the lower seat 2 are located on the upper and lower sides of the synchronizer gear ring, and can just fix the synchronizer gear ring 3. Among them, the gear extrusion machine is a prior art.

[0023] In order to ensure that the synchronizer gear ring can be stressed at both ends and evenly during gear squeezing, a lower stepped hole 2a is provided in the lower seat 2, and a guide step 2b and a placement step 2c are provided in the lower stepped hole 2a at intervals, wherein the placement step 2c is used to place the synchronizer gear ring 3, and the inner diameter of the placement step 2c is larger than the major diameter of the spline in the synchronizer gear ring 3, and the outer diameter of the placement step 2c matches the maximum outer diameter of the synchronizer gear ring 3, so that the lower end of the synchronizer gear ring is located on the placement step. An upper stepped hole 1a is provided in the upper cover 1, and a clamping step 1b is provided near the lower end of the upper stepped hole 1a, and the inner diameter of the clamping step 1b matches the maximum outer diameter of the synchronizer gear ring 3, and the distance between the clamping step 1b and the bottom surface of the upper cover 1 is smaller than the height of the synchronizer gear ring 3, so that when the upper cover is downward, it can cover the outer side of the upper end of the synchronizer gear ring.

[0024] Preferably, the distance between the clamping step 1b and the bottom surface of the upper cover 1, and the distance between the guide step 2b and the placement step 2c are matched with the height of the protrusion on the synchronizer gear ring 3, so that the forces on the upper and lower ends of the synchronizer gear ring are uniform, ensuring the stability during the gear squeezing. The outer diameter of the clamping step 1b matches the outer diameter of the placement step 2c, and the height of the placement step 2c is higher than the height of the slide groove of the synchronizer gear ring 3, so that after clamping, the upper cover is located in the lower seat to form a whole.

[0025] The specific structure of the lower mounting assembly includes a translation assembly, a sliding base plate 4, a lower mounting seat 5 and a main shaft 6, wherein the sliding base plate 4 is arranged on the translation assembly, the lower mounting seat 5 is arranged on the sliding base plate 4 through a bearing 7, and the lower seat 2 is arranged on the lower mounting seat 5, and the bearing is preferably a cross roller bearing. After the main shaft 6 passes through the translation assembly, a rotating assembly for driving the main shaft 6 to rotate is arranged, and an extrusion gear 8 for extruding an inverted cone is installed on the main shaft 6 through an extrusion gear fixing assembly, and the translation assembly can drive the sliding base plate 4 away from or close to the main shaft 6. Among them, the translation assembly and the rotating assembly are existing technologies, such as a screw nut, a gear rack or a telescopic cylinder, etc., which move linearly, and the rotating assembly can be directly a motor.

[0026] The specific structure of the extrusion gear fixing assembly includes an extrusion gear pressure plate 9. A positioning step 6a is provided on the main shaft 6 for preventing the extrusion gear 8 from moving downward. The extrusion gear pressure plate 9 is sleeved on the main shaft and is used to prevent the extrusion gear 8 from moving upward. The extrusion gear pressure plate can be fixed to the main shaft by horizontally arranged screws, and can also be fixed by a nut that is threaded on the main shaft and pressed on the extrusion gear pressure plate.

[0027] The specific structure of the upper mounting assembly includes an upper mounting seat 10 and a lower pressing assembly, wherein the upper mounting seat 10 is arranged on the lower pressing assembly, and the upper cover 1 is arranged on the upper mounting seat 10 through a connecting block. The lower pressing assembly can drive the upper mounting seat 10 and the upper cover 1 to move up and down, and a main shaft fixing assembly for fixing the upper end of the main shaft is arranged on the lower pressing assembly. The lower pressing assembly is a prior art, such as a linear moving mechanism such as a telescopic cylinder.

[0028] The main shaft fixing assembly includes an upper sleeve 11 rotatably arranged below the pressing assembly, a clamping shaft 12 is slidably arranged up and down in the upper sleeve 11, and the lower end of the clamping shaft 12 and the upper end of the main shaft 6 are provided with protrusions and grooves that cooperate with each other to clamp, a sliding groove 12a is axially arranged on the clamping shaft 12, a sliding shaft 13 is arranged in the sliding groove 12a, and both ends of the sliding shaft 13 are fixed on the upper sleeve 11, and a return spring 14 located in the upper sleeve 11 is arranged between the upper end of the clamping shaft 12 and the upper sleeve 11.

[0029] Preferably, the connection block 15 is provided with a plurality of lightening holes 15a for reducing weight.

Claims

1. A gear extrusion tool for a synchronizer gear ring, comprising an upper cover (1) and a lower seat (2) for fixing a synchronizer gear ring (3) and located at the upper and lower sides of the synchronizer gear ring (3) after placement, wherein the upper cover (1) is arranged on a gear extrusion machine through an upper mounting assembly, and the upper mounting assembly can move downward under the action of the gear extrusion machine, and the lower seat is arranged on the gear extrusion machine through a lower mounting assembly, and the lower mounting assembly can translate under the action of the gear extrusion machine, characterized in that: The lower seat (2) is provided with a lower stepped hole (2a) extending upward and downward, and the lower stepped hole (2a) is provided with a guide step (2b) and a placement step (2c) at intervals upward and downward, and the placement step (2c) is used to place the synchronizer gear ring (3), and the inner diameter of the placement step (2c) is larger than the major diameter of the inner spline of the synchronizer gear ring (3), and the outer diameter of the placement step (2c) matches the maximum outer diameter of the synchronizer gear ring (3); the upper cover (1) is provided with an upper stepped hole (1a) extending upward and downward, and a clamping step (1b) is provided at a position near the lower end of the upper stepped hole (1a), and the inner diameter of the clamping step (1b) matches the maximum outer diameter of the synchronizer gear ring (3), and the distance between the clamping step (1b) and the bottom surface of the upper cover (1) is smaller than the height of the synchronizer gear ring (3).

2. The gear extrusion tool for synchronizer ring gear according to claim 1, characterized in that: The distance between the clamping step (1b) and the bottom surface of the upper cover (1), and the distance between the guide step (2b) and the placement step (2c) all match the height of the protrusion on the synchronizer gear ring (3); the outer diameter of the clamping step (1b) matches the outer diameter of the placement step (2c); and the height of the placement step (2c) is higher than the height of the slide groove of the synchronizer gear ring (3).

3. The gear extrusion tool for synchronizer ring gear according to claim 1, characterized in that: The lower mounting assembly comprises a translation assembly, a sliding base plate (4), a lower mounting seat (5) and a main shaft (6); the sliding base plate (4) is arranged on the translation assembly; the lower mounting seat (5) is arranged on the sliding base plate (4) via a bearing (7); the lower seat (2) is arranged on the lower mounting seat (5); after the main shaft (6) passes through the translation assembly, a rotating assembly for driving the main shaft (6) to rotate is arranged; an extrusion gear (8) for extruding an inverted cone is installed on the main shaft (6) via an extrusion gear fixing assembly; and the translation assembly can drive the sliding base plate (4) to move away from or close to the main shaft (6).

4. The gear extrusion tool for synchronizer ring gear according to claim 3, characterized in that: The extrusion gear fixing assembly comprises an extrusion gear pressure plate (9), the main shaft (6) is provided with a positioning step (6a) for preventing the extrusion gear (8) from moving downward, and the extrusion gear pressure plate (9) is sleeved on the main shaft and is used to prevent the extrusion gear (8) from moving upward.

5. The gear extrusion tool for synchronizer ring gear according to claim 4, characterized in that: The upper mounting assembly comprises an upper mounting seat (10) and a lower pressing assembly, wherein the upper mounting seat (10) is arranged on the lower pressing assembly, and the upper cover (1) is arranged on the upper mounting seat (10) via a connecting block (15). The lower pressing assembly can drive the upper mounting seat (10) and the upper cover (1) to move up and down, and a main shaft fixing assembly for fixing the upper end of the main shaft is arranged on the lower pressing assembly.

6. The gear extrusion tool for synchronizer ring gear according to claim 5, characterized in that: The spindle fixing assembly comprises an upper sleeve (11) rotatably arranged below the pressing assembly, a clamping shaft (12) is slidably arranged in the upper sleeve (11), a lower end of the clamping shaft (12) and an upper end of the spindle (6) are provided with protrusions and grooves that cooperate with each other to clamp, a sliding groove (12a) is axially arranged on the clamping shaft (12), a sliding shaft (13) is arranged in the sliding groove (12a), both ends of the sliding shaft (13) are fixed on the upper sleeve (11), and a return spring (14) located in the upper sleeve (11) is arranged between the upper end of the clamping shaft (12) and the upper sleeve (11).

7. The gear extrusion tool for synchronizer ring gear according to claim 5, characterized in that: The connection block (15) is provided with a plurality of weight-reducing holes (15a).