Gear shaft riveting assembly equipment

Abstract

The utility model discloses a gear shaft riveting assembly device which comprises a fixed lower module and a movable upper module. The fixed lower module is provided with a gear shaft positioning mechanism. The fixed lower die is provided with a lower die through hole corresponding to the gear shaft positioning mechanism, the gear shaft positioning mechanism comprises a gear shaft positioning rod, an adjusting ejector pin and an adjusting screw which are located in the lower die through hole and sequentially arranged from top to bottom, and the upper end of the gear shaft positioning rod is provided with a gear shaft positioning hole with an upward opening; the adjusting screw is in threaded connection with the inner wall of the through hole of the lower module in a threaded connection manner; a vertically-penetrating riveting through hole is formed in the position, corresponding to the gear shaft positioning hole of the gear shaft positioning rod, of the upper movable die, and a workpiece positioning protrusion is arranged on the portion, beside the riveting through hole, of the upper surface of the upper movable die. By means of the structural design, adaptive adjustment can be conducted according to the length of the gear shaft or the riveting height requirement, and the gear shaft riveting device has the advantages of being novel in structural design, good in adjustability and high in adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting assembly equipment, in particular to a gear shaft riveting assembly equipment. Background Art

[0002] The patent number is: ZL202221328804.0, and the patent name is: A Chinese utility model patent for a universal riveting fixture for an electric steering gear shaft retaining ring. It essentially discloses a gear shaft riveting assembly device; specifically, the universal riveting fixture for an electric steering gear gear shaft retaining ring is composed of a base plate, a top plate, a workpiece positioning mechanism, a guide rod and a press head. The workpiece positioning mechanism is fixedly installed on the base plate, and guide rods are provided at the four corners of the base plate outside the workpiece positioning mechanism. The top of the guide rod is movably mounted with a top plate through a rectangular coil spring and a shaft sleeve, and a press head is provided on the top plate corresponding to the workpiece positioning mechanism.

[0003] During the operation of the universal riveting fixture for the gear shaft retaining ring of the electric steering gear, the workpiece is positioned by the workpiece positioning mechanism, and then the top plate is pressed down by the hydraulic press to make the sleeve and the guide rod slide relative to each other. At the same time, the sleeve squeezes the rectangular coil spring, the rectangular coil spring stores energy, and the riveting head performs riveting operation on the gear shaft workpiece. After the riveting is completed, the hydraulic press is reset, and the sleeve and the top plate are synchronously reset under the elastic force of the rectangular coil spring. Thus, the riveting operation of the gear shaft workpiece is completed.

[0004] It should be pointed out that the universal riveting fixture for the electric steering gear gear shaft retaining ring still has the following defects, specifically: it cannot be adaptively adjusted according to the length of the gear shaft or the riveting height requirements, and has poor adjustability and adaptability. Utility Model Content

[0005] The purpose of the utility model is to provide a gear shaft riveting assembly device to address the deficiencies of the existing technology. The gear shaft riveting assembly device has a novel structural design, good adjustability and strong adaptability.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions.

[0007] A gear shaft riveting assembly device includes a fixed lower mold and a movable upper mold located above the fixed lower mold, wherein the fixed lower mold is equipped with a gear shaft positioning mechanism;

[0008] The fixed lower module is provided with a vertically penetrating lower module through hole corresponding to the gear shaft positioning mechanism. The gear shaft positioning mechanism includes a gear shaft positioning rod, an adjusting ejector pin, and an adjusting screw, which are located in the lower module through hole and arranged in sequence from top to bottom. The upper end of the gear shaft positioning rod is provided with an upwardly opening gear shaft positioning hole. The adjusting screw is screwed to the inner wall of the lower module through hole by a threaded connection.

[0009] The movable upper module is provided with a vertically penetrating riveting through hole corresponding to the gear shaft positioning hole of the gear shaft positioning rod, and a workpiece positioning protrusion is provided on the upper surface of the movable upper module beside the riveting through hole.

[0010] The fixed lower module is equipped with a plurality of vertically arranged guide columns, and the movable upper module is provided with vertically penetrating guide holes corresponding to the guide columns, and each guide column passes through the corresponding guide hole.

[0011] The periphery of each guide column is respectively covered with a spring, the upper end of each spring is respectively in contact with the movable upper module, and the lower end of each spring is respectively in contact with the fixed lower module.

[0012] Wherein, the upper end of each guide column is screwed with a limit screw, and each limit screw is located above the movable upper module;

[0013] When the movable upper module moves upward to the upper limit position relative to the guide column, the movable upper module abuts against the limit screw.

[0014] The upper end portion of the fixed lower mold is provided with a cylindrical lower mold cylindrical portion, and the upper end opening of the lower mold through hole extends to the upper end surface of the lower mold cylindrical portion;

[0015] The movable upper mold is provided with an upper mold sleeve portion protruding and extending downward, and a core portion of the upper mold sleeve portion is formed with a circular hole;

[0016] When the fixed lower mold and the movable upper mold are closed, the upper end portion of the cylindrical portion of the lower mold is inserted into the circular hole of the movable upper mold.

[0017] Wherein, the upper end surface of the cylindrical portion of the lower mold is provided with an upwardly protruding alignment protrusion beside the through hole of the lower mold;

[0018] The movable upper module is provided with a vertically penetrating alignment through hole corresponding to the alignment protrusion.

[0019] Compared to the prior art, the present invention has the following beneficial effects. Specifically, in the gear shaft positioning mechanism of the present invention, since the adjusting screw is threadedly connected to the inner wall of the lower mold through-hole that fixes the lower mold, the adjusting screw can be adjusted up and down by rotating the adjusting screw, thereby causing the adjusting pin and the gear shaft positioning rod to be adjusted up and down synchronously, so that the positioning height of the gear shaft positioning rod on the gear shaft is adapted to the length of the gear shaft or the required riveting height. Therefore, the gear shaft riveting assembly equipment of the present invention has the advantages of novel structural design, good adjustability, and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is an exploded schematic diagram of the present utility model.

[0023] Figure 3 It is a cross-sectional schematic diagram of the present utility model.

[0024] Figure 4 for Figure 3 A partial enlarged schematic diagram.

[0025] exist Figures 1 to 4 These include:

[0026] 1-Fixed lower module; 11-Through hole of lower module; 12-Cylindrical portion of lower module; 13-Alignment protrusion; 2-Movable upper module; 21-Riveted through hole; 22-Workpiece positioning protrusion; 23-Guide hole; 24-Sleeve portion of upper module; 241-Circular hole; 25-Alignment through hole; 3-Gear shaft positioning mechanism; 31-Gear shaft positioning rod; 311-Gear shaft positioning hole; 32-Adjustment pin; 33-Adjustment screw; 4-Guide column; 5-Spring; 6-Limiting screw. DETAILED DESCRIPTION

[0027] The present invention will be described below in conjunction with specific implementation methods.

[0028] Example 1, as Figures 1 to 3 As shown, a gear shaft riveting assembly device includes a fixed lower module 1 and a movable upper module 2 located above the fixed lower module 1. The fixed lower module 1 is equipped with a gear shaft positioning mechanism 3.

[0029] Among them, such as Figures 1 to 4 As shown, the fixed lower module 1 corresponds to the gear shaft positioning mechanism 3 and is provided with a lower module through hole 11 running vertically therethrough. The gear shaft positioning mechanism 3 includes a gear shaft positioning rod 31, an adjusting pin 32, and an adjusting screw 33 which are located in the lower module through hole 11 and arranged in sequence from top to bottom. The upper end portion of the gear shaft positioning rod 31 is provided with a gear shaft positioning hole 311 which opens upward, and the adjusting screw 33 is screwed to the inner wall of the lower module through hole 11 by a threaded connection.

[0030] Further, such as Figures 1 to 4 As shown, the movable upper module 2 is provided with a vertically penetrating riveting through hole 21 corresponding to the gear shaft positioning hole 311 of the gear shaft positioning rod 31 , and a workpiece positioning protrusion 22 is provided on the upper surface of the movable upper module 2 beside the riveting through hole 21 .

[0031] When the gear shaft riveting assembly equipment of the first embodiment is used to rivet the gear shaft and the workpiece, the staff first inserts the gear shaft into the gear shaft positioning hole 311 of the gear shaft positioning rod 31. The gear shaft positioning hole 311 positions the gear shaft and keeps the gear shaft in a vertical state, and the upper end of the gear shaft protrudes from the upper end surface of the gear shaft positioning rod 31; then the workpiece is placed on the upper surface of the movable upper module 2 and positioned by the workpiece positioning protrusion 22. At this time, the rivet hole position of the workpiece, the rivet through hole 21 of the movable upper module 2 and the gear shaft positioned in the gear shaft positioning hole 311 are vertically aligned; then the driving member presses the workpiece on the upper surface of the movable upper module 2 and makes the workpiece and the movable upper module 2 move downward synchronously, and finally the upper end of the gear shaft is inserted into and riveted into the rivet hole of the workpiece to complete the riveted assembly of the gear shaft and the workpiece.

[0032] It should be emphasized that, for the gear shaft positioning mechanism 3 of the first embodiment, since the adjusting screw 33 is threadedly connected to the inner wall of the lower module through hole 11 that fixes the lower module 1, the adjusting screw 33 can be adjusted to move up and down by rotating the adjusting screw 33, thereby making the adjusting pin 32 and the gear shaft positioning rod 31 synchronously move up and down, so that the positioning height of the gear shaft by the gear shaft positioning rod 31 is adapted to the length of the gear shaft or the required riveting height.

[0033] Based on the above, it can be seen that through the above structural design, the gear shaft riveting assembly equipment of the first embodiment can be adaptively adjusted according to the length of the gear shaft or the riveting height requirements; therefore, the gear shaft riveting assembly equipment of the first embodiment has the advantages of novel structural design, good adjustability and strong adaptability.

[0034] Example 2, as Figures 1 to 3 As shown, the difference between the second embodiment and the first embodiment is that the fixed lower module 1 is equipped with a plurality of vertically arranged guide columns 4, and the movable upper module 2 is provided with vertically penetrating guide holes 23 corresponding to each guide column 4, and each guide column 4 passes through the corresponding guide hole 23.

[0035] The outer periphery of each guide column 4 is respectively provided with a spring 5 , the upper end of each spring 5 is respectively in contact with the movable upper mold 2 , and the lower end of each spring 5 is respectively in contact with the fixed lower mold 1 .

[0036] After the workpiece and the gear shaft are riveted, the driving member moves upward and gradually withdraws from the movable upper mold 2. During this process, the restoring force of each spring 5 causes the movable upper mold 2 to move upward and return to its initial position.

[0037] Example 3, as Figures 1 to 3As shown, the difference between the third embodiment and the second embodiment is that a limit screw 6 is screwed onto the upper end of each guide post 4, and each limit screw 6 is located above the movable upper module 2. When the movable upper module 2 moves upward relative to the guide post 4 to the upper limit position, the movable upper module 2 abuts against the limit screw 6.

[0038] As for the limiting screw 6 of the third embodiment, it is used to block and limit the movable upper module 2 to prevent the movable upper module 2 from retreating from the guide pillars 4, thereby improving the stability of the gear shaft riveting assembly equipment of the third embodiment.

[0039] Example 4, as Figures 1 to 4 As shown, the difference between the fourth embodiment and the first embodiment is that a cylindrical lower mold portion 12 is provided at the upper end of the fixed lower mold 1 , and the upper end opening of the lower mold through hole 11 extends to the upper end surface of the lower mold cylindrical portion 12 .

[0040] The movable upper mold 2 is provided with an upper mold sleeve portion 24 protruding and extending downward, and a circular hole 241 is formed in the core of the upper mold sleeve portion 24 .

[0041] It should be pointed out that when the fixed lower module 1 and the movable upper module 2 are closed, the upper end portion of the cylindrical portion 12 of the lower module is inserted into the circular hole 241 of the movable upper module 2; therefore, in the process of the movable upper module 2 moving downward and gradually closing with the fixed lower module 1, the cylindrical portion 12 of the lower module is adapted to the circular hole 241 of the sleeve portion 24 of the upper module. This fourth embodiment can further improve the accuracy of the alignment of the movable upper module 2 and the fixed lower module 1, thereby improving the accuracy of the riveting operation.

[0042] Example 5, as Figure 2 As shown, the difference between the fifth embodiment and the fourth embodiment is that: the upper end surface of the cylindrical portion 12 of the lower module is provided with an upwardly protruding alignment protrusion 13 beside the lower module through hole 11; the movable upper module 2 is provided with a vertically penetrating alignment through hole 25 corresponding to the alignment protrusion 13.

[0043] When positioning the movable upper module 2 above the fixed lower module 1 , the staff can determine whether the movable upper module 2 is correctly installed based on the alignment of the alignment protrusions 13 and the alignment through holes 25 .

[0044] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A gear shaft riveting assembly device, comprising a fixed lower mold (1), a movable upper mold (2) located above the fixed lower mold (1), and the fixed lower mold (1) is equipped with a gear shaft positioning mechanism (3); Its characteristics are: The fixed lower mold (1) is provided with a lower mold through hole (11) vertically penetrating the corresponding gear shaft positioning mechanism (3). The gear shaft positioning mechanism (3) includes a gear shaft positioning rod (31), an adjusting pin (32), and an adjusting screw (33) which are located in the lower mold through hole (11) and arranged in sequence from top to bottom. The upper end of the gear shaft positioning rod (31) is provided with a gear shaft positioning hole (311) which opens upward. The adjusting screw (33) is screwed to the inner wall of the lower mold through hole (11) by a threaded connection. The movable upper mold (2) is provided with a vertically penetrating riveting through hole (21) corresponding to the gear shaft positioning hole (311) of the gear shaft positioning rod (31), and a workpiece positioning protrusion (22) is provided on the upper surface of the movable upper mold (2) beside the riveting through hole (21).

2. The gear shaft riveting assembly equipment according to claim 1, characterized in that: The fixed lower mold (1) is equipped with a plurality of vertically arranged guide columns (4), and the movable upper mold (2) is provided with vertically penetrating guide holes (23) corresponding to the guide columns (4), and each guide column (4) passes through the corresponding guide hole (23); The outer periphery of each guide column (4) is respectively provided with a spring (5), the upper end of each spring (5) is respectively in contact with the movable upper mold (2), and the lower end of each spring (5) is respectively in contact with the fixed lower mold (1).

3. The gear shaft riveting assembly equipment according to claim 2, characterized in that: The upper end of each guide column (4) is screwed with a limit screw (6), and each limit screw (6) is located above the movable upper module (2). When the movable upper mold (2) moves upward to the upper limit position relative to the guide column (4), the movable upper mold (2) abuts against the limit screw (6).

4. The gear shaft riveting assembly equipment according to claim 1, characterized in that: The upper end portion of the fixed lower mold (1) is provided with a lower mold cylindrical portion (12) in a cylindrical shape, and the upper end opening of the lower mold through hole (11) extends to the upper end surface of the lower mold cylindrical portion (12); The movable upper mold (2) is provided with an upper mold sleeve portion (24) protruding downward, and a core portion of the upper mold sleeve portion (24) is formed with a circular hole (241); When the fixed lower mold (1) and the movable upper mold (2) are closed, the upper end portion of the lower mold cylindrical portion (12) is inserted into the circular hole (241) of the movable upper mold (2).

5. The gear shaft riveting assembly equipment according to claim 4, characterized in that: The upper end surface of the cylindrical portion (12) of the lower mold is provided with an upwardly protruding alignment protrusion (13) beside the lower mold through hole (11); The movable upper module (2) is provided with a vertically penetrating alignment through hole (25) corresponding to the alignment protrusion (13).

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