Automatic assembling mechanism for torsion bar of steering gear

Abstract

The utility model provides a steering gear torsion bar automatic assembling mechanism which comprises a stand column and an assembling mechanism, the side face of the top of the stand column is provided with a linear module driving the assembling mechanism to move in a lifting mode, the assembling mechanism is installed on a sliding block on the side face of the linear module, and the bottom of the assembling mechanism is provided with a to-be-assembled part spline shaft needing to be assembled. A chuck for placing a torsion bar shaft is arranged right below the assembling mechanism; the assembling mechanism comprises a base, a servo motor, a bearing seat, a main shaft, a sliding sleeve, a compression spring, a clamping jaw and a proximity switch. According to the utility model, the main shaft and the bearing seat are clamped and rotated and are matched with the buffering lifting of the bearing seat on the outer side of the main shaft, so that when the assembling mechanism drives the spline shaft to be assembled to descend and is assembled and staggered with the torsion bar shaft, the flat opening position of the spline shaft to be assembled is rotated and adjusted, and the spline shaft to be assembled is in a position suitable for the torsion bar shaft; therefore, the assembling efficiency of the steering gear torsion bar automatic assembling mechanism can be improved, and meanwhile the spline shaft of the part to be assembled is not prone to damage in the dislocation process.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly automation, in particular to an automatic assembly mechanism for a torsion bar of a steering gear. Background Art

[0002] The steering gear torsion bar, also known as the steering wheel torsion bar, is a key component in the automobile steering system. It connects the steering wheel and the steering mechanism, and is used to turn the front wheels of the vehicle and control the steering direction of the vehicle. The assembly of the steering gear torsion bar is mostly done manually. If it is combined with a fully automatic assembly production line, it requires automated equipment that can automatically identify the installation angle and assemble it in place.

[0003] When assembling the current steering gear torsion bar, it is required that the flat mouth on the spline shaft be aligned with the long groove on the torsion bar while the torsion bar and the spline shaft are combined, and then the two are pressed in and assembled into place.

[0004] However, during the actual assembly of the steering gear torsion bar, it was found that the flat mouth on the spline shaft and the long slot on the torsion bar were easily misaligned, affecting normal assembly and requiring manual adjustment. In order to improve the installation efficiency of the steering gear torsion bar, the flat mouth and the long slot need to be automatically aligned, and the alignment is continued while pressing to the specified position;

[0005] In summary, there is a need for an automatic assembly mechanism for a steering gear torsion bar that is easy to correct and install. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an automatic assembly mechanism for a torsion bar of a steering gear, which solves the problems mentioned in the background technology.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A steering gear torsion bar automatic assembly mechanism, comprising a column and an assembly mechanism, wherein a linear module for driving the assembly mechanism to move up and down is provided on the side surface of the top of the column, the assembly mechanism is installed on a slider on the side surface of the linear module, a spline shaft of a to-be-assembled part to be assembled is provided at the bottom of the assembly mechanism, and a chuck for placing the torsion bar shaft is provided directly below the assembly mechanism;

[0009] The assembly mechanism includes a base, a servo motor, a bearing seat, a main shaft, a sleeve, a compression spring, a clamp and a proximity switch. The base is arranged on the side of the linear module. A servo motor and a bearing seat are arranged at the end of the base away from the linear module. The servo motor is located at the top of the base, and the bearing seat is located at the bottom of the base. A main shaft is arranged inside the bearing seat. The main shaft and the bearing seat are connected by a bearing group combination. The main shaft and the bearing seat are engaged and rotated. The main shaft and the servo motor are connected by a coupling. A sleeve is arranged under the main shaft, and a clamp for clamping the spline shaft of the assembly to be assembled is arranged on the bottom of the sleeve.

[0010] Furthermore, the main shaft and the sliding sleeve are engaged and slidable, and a limiting pin is provided between the main shaft and the sliding sleeve.

[0011] Furthermore, a compression spring is provided at the bottom end of the main shaft, and one end of the compression spring facing away from the main shaft is connected to the inside of the sliding sleeve.

[0012] Furthermore, a proximity switch is provided on the side of the base, and the proximity switch is in close contact with the sliding sleeve.

[0013] Furthermore, the clamp includes an installation box, an electric rod, a push plate, a push rod, a movable block, a splint and an anti-skid pad. The installation box is arranged on the bottom surface of the sliding sleeve, an electric rod is arranged on the top inner side of the installation box, a push plate is arranged at the bottom end of the electric rod, a plurality of push rods are arranged on the bottom surface of the push plate, the push rods and the push plates are engaged and slidably engaged, a movable block is arranged on the end of the push rod away from the push plate, the movable block is rotatably connected to the installation box, a splint is arranged on the bottom surface of the movable block, the splint is in an L-shaped structure, an anti-skid pad is arranged on the inner side of the splint, and the anti-skid pad is made of elastic material.

[0014] Furthermore, the chuck includes a chassis, a card box and a cartridge, the top surface of the chassis is provided with a card box, the top surface of the cartridge is provided with a cartridge, a fixing cavity is opened in the middle of the cartridge, and the cartridge is threadedly connected to the card box.

[0015] The utility model provides a steering gear torsion bar automatic assembly mechanism. Compared with the prior art, it has the following beneficial effects:

[0016] The main shaft and the bearing seat are engaged and rotated, and the bearing seat is lifted and lowered on the outside of the main shaft in a buffering manner. When the assembly mechanism drives the spline shaft to be assembled to be dislocated with the torsion bar shaft, the flat mouth position of the spline shaft to be assembled is adjusted by rotation, so that the spline shaft to be assembled is in a position suitable for the torsion bar shaft, thereby improving the assembly efficiency of the steering gear torsion bar automatic assembly mechanism, and making the spline shaft to be assembled less likely to be damaged during the dislocation process.

[0017] The assembly process is fully automated, the assembly quality is stable, and the process is controllable;

[0018] The structure is simple, and the spring and sleeve structure provide position buffer and subsequent assembly pressure, eliminating the need for complex detection and judgment processes;

[0019] Simple installation and debugging, convenient maintenance;

[0020] The mechanism has certain versatility and is suitable for the assembly of components under similar working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a steering gear torsion bar automatic assembly mechanism of the utility model is shown;

[0023] Figure 2 The schematic diagram of the structure of the assembly mechanism of the utility model is shown;

[0024] Figure 3 The schematic diagram of the structure of the clamping jaw of the utility model is shown;

[0025] Figure 4 A schematic structural diagram of a chuck of the utility model is shown;

[0026] As shown in the figure: 1. Column; 2. Linear module; 3. Assembly mechanism; 31. Base; 32. Servo motor; 33. Bearing seat; 34. Spindle; 35. Sliding sleeve; 36. Compression spring; 37. Clamp; 371. Mounting box; 372. Electric rod; 373. Push plate; 374. Push rod; 375. Movable block; 376. Clamp; 377. Anti-slip pad; 38. Proximity switch; 4. Spline shaft to be assembled; 5. Torsion bar shaft; 6. Chuck; 61. Chassis; 62. Card box; 63. Card cylinder. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1: To solve the technical problems in the background technology, a steering gear torsion bar automatic assembly mechanism is provided as follows:

[0029] Combination Figure 1-Figure 3As shown, the utility model provides a steering gear torsion bar automatic assembly mechanism, including a column 1 and an assembly mechanism 3, a linear module 2 for driving the assembly mechanism 3 to move up and down is provided on the top side of the column 1, the assembly mechanism 3 is installed on the side slider of the linear module 2, a spline shaft 4 of a to-be-assembled part to be assembled is provided at the bottom of the assembly mechanism 3, and a chuck 6 for placing a torsion bar shaft 5 is provided directly below the assembly mechanism 3; the assembly mechanism 3 includes a base 31, a servo motor 32, a bearing seat 33, a spindle 34, a sleeve 35, a compression spring 36, a clamping claw 37 and a proximity switch 38, and the base 31 is provided on the side of the linear module 2. The end of the base 31 away from the linear module 2 A servo motor 32 and a bearing seat 33 are provided. The servo motor 32 is located at the top of the base 31, and the bearing seat 33 is located at the bottom of the base 31. A main shaft 34 is provided inside the bearing seat 33. The main shaft 34 and the bearing seat 33 are connected by a bearing assembly. The main shaft 34 and the bearing seat 33 are engaged and rotated. The main shaft 34 and the servo motor 32 are connected by a coupling. A sliding sleeve 35 is provided below the main shaft 34. A clamping claw 37 for clamping the spline shaft 4 to be assembled is provided on the bottom surface of the sliding sleeve 35. The servo motor 32 arranged at the top of the base 31 can drive the main shaft 34, the sliding sleeve 35 and the clamping claw 37 to rotate, so as to adjust the spline shaft 4 to be assembled to a suitable angle for assembly.

[0030] In this embodiment, the main shaft 34 and the sliding sleeve 35 are engaged and slidable, and a limit pin is provided between the main shaft 34 and the sliding sleeve 35; through the engagement and sliding of the main shaft 34 and the sliding sleeve 35, when the spline shaft 4 and the torsion bar shaft 5 to be assembled are misaligned and cannot be assembled, the sliding sleeve 35 can slide upward on the outside of the main shaft 34 to avoid damaging the spline shaft 4 and the torsion bar shaft 5 to be assembled; the setting of the limit pin can limit the lifting distance of the sliding sleeve 35;

[0031] In this embodiment, a compression spring 36 is provided at the bottom end of the main shaft 34, and one end of the compression spring 36 facing away from the main shaft 34 is connected to the inside of the sliding sleeve 35; the compression spring 36 is provided at the bottom end of the main shaft 34, so that the sliding sleeve 35 can always receive downward pressure, so that when the flat mouth of the spline shaft 4 to be assembled is aligned with the long groove of the torsion bar shaft 5, the sliding sleeve 35 can smoothly push down the spline shaft 4 to be assembled, so that the spline shaft 4 to be assembled and the torsion bar shaft 5 are assembled together;

[0032] In this embodiment, a proximity switch 38 is provided on the side of the base 31, and the proximity switch 38 is in close contact with the sliding sleeve 35; the proximity switch 38 provided on the side of the base 31 can detect the position of the sliding sleeve 35, and judge whether the sliding sleeve 35 is in the extended or compressed position, so that the servo motor 32 drives the spline shaft 4 of the assembly to rotate and adjusts the flat mouth angle;

[0033] By engaging and rotating the main shaft 34 and the bearing seat 33, and cooperating with the buffering lifting and lowering of the bearing seat 33 on the outside of the main shaft 34, the assembling mechanism 3 drives the spline shaft 4 to be assembled to descend and assemble with the torsion bar shaft 5. When the spline shaft 4 to be assembled is misaligned, the flat mouth position of the spline shaft 4 to be assembled is adjusted by rotating so that the spline shaft 4 to be assembled is suitable for the torsion bar shaft 5, thereby improving the assembling efficiency of the steering gear torsion bar automatic assembling mechanism 3 and preventing the spline shaft 4 to be assembled from being easily damaged during the misalignment process.

[0034] Embodiment 2: Figure 1-Figure 4 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0035] In order to enable the steering gear torsion bar automatic assembly mechanism 3 to realize the function of assembling the spline shaft 4 and the torsion bar shaft 5 to be assembled, it is necessary to ensure that the spline shaft 4 to be assembled can be stably lifted and lowered. The present embodiment provides the following design:

[0036] The clamping jaw 37 includes a mounting box 371, an electric rod 372, a push plate 373, a push rod 374, a movable block 375, a clamping plate 376 and an anti-slip pad 377. The mounting box 371 is arranged on the bottom surface of the sliding sleeve 35, the top of the inner side of the mounting box 371 is provided with an electric rod 372, the bottom end of the electric rod 372 is provided with a push plate 373, and the bottom surface of the push plate 373 is provided with multiple groups of push rods 374. The push rods 374 are engaged and slid with the push plates 373. The end of the push rod 374 away from the push plate 373 is provided with a movable block 375, and the movable block 375 is connected to the mounting box. 371 is rotatably connected, a clamping plate 376 is provided on the bottom surface of the movable block 375, the clamping plate 376 is in an L-shaped structure, and an anti-skid pad 377 is provided on the inner side of the clamping plate 376, and the anti-skid pad 377 is made of elastic material; the electric rod 372 provided by the mounting box 371 can push the push plate 373 to rise and fall, so that the push rod 374 slides on the bottom surface of the push plate 373, and at this time, the push rod 374 will drive the movable block 375, the clamping plate 376 and the anti-skid pad 377 to rotate, so as to clamp the spline shaft 4 to be assembled at the bottom of the fixed mounting box 371;

[0037] In this embodiment, the chuck 6 includes a chassis 61, a card box 62 and a cartridge 63. The top surface of the chassis 61 is provided with a card box 62, the top surface of the cartridge 63 is provided with a cartridge 63, a fixing cavity is opened in the middle of the cartridge 63, and the cartridge 63 is threadedly connected to the card box 62; the threaded connection between the cartridge 63 and the cartridge 62 facilitates the staff to replace cartridges 63 of different sizes according to the size of the torsion bar shaft 5; the fixing cavity set in the middle of the cartridge 63 can clamp and fix the torsion bar shaft 5.

[0038] The working principle and use process of this utility model:

[0039] When the steering gear torsion bar automatic assembly mechanism 3 is used, the robot will place the spline shaft 4 and torsion bar shaft 5 to be assembled in the clamping position of the assembly mechanism 3 and the chuck 6 respectively and fix them during operation. The linear module 2 starts to drive the assembly mechanism 3 to move downward and stops at the designated assembly position. During this process, if the flat mouths of the spline shaft and the torsion bar shaft 5 are aligned, the assembly is in place, otherwise the sleeve 35 will move up along the main shaft 34 under the action of pressure, and the compression spring 36 will be further compressed, and the proximity switch 38 will detect that the sleeve 35 is in the compressed position. Then the servo motor 32 is started, driving the main shaft 34, the sleeve 35, the clamp 37, the spline shaft and other components to rotate until the flat mouth of the spline shaft is aligned and the spline shaft moves downward under the pressure of the compression spring 36, and the flat mouth falls into the long groove of the torsion bar shaft 5. The proximity switch 38 detects that the sleeve 35 returns to the extended position, and it is determined that the assembly is in place.

[0040] Then the clamping claw 37 releases its grip, the linear module 2 starts to drive the assembly mechanism 3 back to the initial position, the chuck 6 releases its grip, and the robot takes away the assembly, and the workflow ends.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steering gear torsion bar automatic assembly mechanism, characterized in that: It comprises a column (1) and an assembly mechanism (3), wherein a linear module (2) for driving the assembly mechanism (3) to move up and down is provided on the top side of the column (1), the assembly mechanism (3) is mounted on a side slider of the linear module (2), a spline shaft (4) of a part to be assembled is provided at the bottom of the assembly mechanism (3), and a chuck (6) for placing a torsion bar shaft (5) is provided directly below the assembly mechanism (3); The assembly mechanism (3) comprises a base (31), a servo motor (32), a bearing seat (33), a spindle (34), a sleeve (35), a compression spring (36), a clamp (37) and a proximity switch (38). The base (31) is arranged on the side of the linear module (2). The end of the base (31) facing away from the linear module (2) is provided with a servo motor (32) and a bearing seat (33). The servo motor (32) is located at the top of the base (31). The bearing seat (33) is located at the bottom of the base (31). A spindle (34) is arranged inside the bearing seat (33). The spindle (34) and the bearing seat (33) are connected by a bearing assembly. The spindle (34) and the bearing seat (33) are engaged and rotated. The spindle (34) and the servo motor (32) are connected by a coupling. A sleeve (35) is arranged below the spindle (34). A clamp (37) for clamping the spline shaft (4) of the assembly is arranged on the bottom surface of the sleeve (35).

2. The steering gear torsion bar automatic assembly mechanism according to claim 1, characterized in that: The main shaft (34) and the sliding sleeve (35) are engaged and slidable, and a limit pin is provided between the main shaft (34) and the sliding sleeve (35).

3. The steering gear torsion bar automatic assembly mechanism according to claim 2, characterized in that: A compression spring (36) is provided at the bottom end of the main shaft (34), and one end of the compression spring (36) facing away from the main shaft (34) is connected to the inside of the sliding sleeve (35).

4. The steering gear torsion bar automatic assembly mechanism according to claim 1, characterized in that: A proximity switch (38) is provided on the side of the base (31), and the proximity switch (38) is in close contact with the sliding sleeve (35).

5. The steering gear torsion bar automatic assembly mechanism according to claim 1, characterized in that: The clamping claw (37) comprises a mounting box (371), an electric rod (372), a push plate (373), a push rod (374), a movable block (375), a clamping plate (376) and an anti-slip pad (377); the mounting box (371) is arranged on the bottom surface of the sliding sleeve (35); the electric rod (372) is arranged on the top of the inner side of the mounting box (371); the push plate (373) is arranged at the bottom end of the electric rod (372); and the bottom surface of the push plate (373) is provided with a plurality of groups of A push rod (374) is slidably engaged with the push plate (373), a movable block (375) is provided at one end of the push rod (374) away from the push plate (373), the movable block (375) is rotatably connected to the mounting box (371), a clamping plate (376) is provided on the bottom surface of the movable block (375), the clamping plate (376) is L-shaped, and an anti-skid pad (377) is provided on the inner side of the clamping plate (376), and the anti-skid pad (377) is made of elastic material.

6. The steering gear torsion bar automatic assembly mechanism according to claim 1, characterized in that: The chuck (6) comprises a base (61), a card box (62) and a cartridge (63); the card box (62) is provided on the top surface of the base (61); the cartridge (63) is provided on the top surface of the cartridge (63); a fixing cavity is provided in the middle of the cartridge (63); and the cartridge (63) is threadedly connected to the card box (62).

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