CN221494948U - Steering nut riveting mechanism of parallel shaft type electric power steering machine - Google Patents
Steering nut riveting mechanism of parallel shaft type electric power steering machine Download PDFInfo
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- CN221494948U CN221494948U CN202323091371.9U CN202323091371U CN221494948U CN 221494948 U CN221494948 U CN 221494948U CN 202323091371 U CN202323091371 U CN 202323091371U CN 221494948 U CN221494948 U CN 221494948U
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- steering nut
- height adjusting
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- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 238000003825 pressing Methods 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of machinery, in particular to a steering nut riveting mechanism of a parallel shaft type electric power steering machine, which comprises a replacing base, a riveting cylinder assembly, a height adjusting plate, a linear guide rail, a handle and a mounting bracket, wherein a ball screw is arranged on a top plate of the mounting bracket, the upper end of the ball screw is connected with the handle, the lower end of the ball screw is connected with the height adjusting plate, the height adjusting plate is in sliding connection with the linear guide rail, the riveting cylinder assembly is arranged at the bottom of the height adjusting plate, the replacing base is arranged on a bottom plate of the mounting bracket, and the replacing base is positioned right below the riveting cylinder assembly. Compared with the prior art, the utility model designs the steering nut riveting mechanism of the parallel shaft type electric power steering machine, meets the riveting requirement of small batch sample assembly trial production, has high process precision, good quality and strong universality, is convenient to change, and improves the riveting assembly efficiency of the steering nut coil.
Description
Technical Field
The utility model relates to the technical field of machinery, in particular to a steering nut riveting mechanism of a parallel shaft type electric power steering machine.
Background
The steering nut small assembly is a core part applied to a parallel shaft type electric power steering machine. As shown in fig. 1, the steering nut small assembly is composed of a steering nut 1, a belt pulley 2, a ball bearing 3, a coil 4 and other parts, the steering nut 1 is in interference fit with the belt pulley 2, then the coil 4 locks the ball bearing 3 on the belt pulley 2 with a certain torque, and finally the coil is required to achieve an anti-loose effect through a three-point riveting process.
As shown in fig. 2, three staking points 5 are 120 degrees apart. The riveting process of the steering nut small assembly generally needs special equipment and tools to ensure the high requirement, but for the assembly trial production of small batch sample pieces, the special equipment has the defects of long manufacturing period and high cost.
Therefore, it is necessary to design a steering nut riveting mechanism of a parallel shaft type electric power steering machine to meet the requirement of small-batch sample assembly trial production.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a steering nut riveting mechanism of a parallel shaft type electric power steering machine, so as to meet the requirement of small-batch sample assembly trial production.
In order to achieve the above purpose, the utility model provides a steering nut riveting mechanism of a parallel shaft type electric power steering machine, which comprises a replacing base, a riveting cylinder assembly, a height adjusting plate, a linear guide rail, a handle and a mounting bracket, wherein a ball screw is arranged on a top plate of the mounting bracket, the upper end of the ball screw is connected with the handle, the lower end of the ball screw is connected with the height adjusting plate, the height adjusting plate is in sliding connection with the linear guide rail, the riveting cylinder assembly is arranged at the bottom of the height adjusting plate, the replacing base is arranged on a bottom plate of the mounting bracket, and the replacing base is positioned right below the riveting cylinder assembly.
The riveting cylinder assembly comprises a riveting head assembly, a coaxiality retainer, a spring pressing mechanism and a riveting base, the spring pressing mechanism is arranged in the center of the riveting base, the riveting head assembly and the coaxiality retainer encircle the spring pressing mechanism, the riveting head assembly and the coaxiality retainer are arranged at intervals, and an arc structure matched with the ball bearing outer ring of the steering nut small assembly is arranged on the inner side of the coaxiality retainer.
The base comprises a base body and a main clamp, wherein the main clamp is connected with a bottom plate of the mounting bracket, the base body is arranged in the center of the main clamp, and the top of the base body is provided with a profiling locating pin matched with a machining hole of the steering nut small assembly.
The guide rod is arranged between the bottom plate and the top plate of the mounting bracket, the guide rod passes through the height adjusting plate, the locking mechanism is arranged on the height adjusting plate, the end part of the locking mechanism is propped against the guide rod or separated from the guide rod, and the limiting block is arranged between the bottom plate and the height adjusting plate of the mounting bracket.
The riveting head assembly comprises a riveting head body and an air cylinder clamping jaw, wherein the air cylinder clamping jaw is arranged on the riveting base, and the riveting head body is fixed at the movable end of the air cylinder clamping jaw.
The rivet body is of an equilateral triangle structure.
The spring pressing mechanism comprises a pressing sheet, a connecting column and a spring, wherein the connecting column is arranged on the riveting base, the pressing sheet and the spring are sleeved outside the connecting column, and two ends of the spring respectively prop against the pressing sheet and the riveting base.
The riveting cylinder assembly is characterized in that an intermediate transition ring is arranged between the riveting cylinder assembly and the height adjusting plate, six waist-shaped holes are formed in the surface of the height adjusting plate, and the fastening piece penetrates through the waist-shaped holes and then is fixed with the riveting cylinder assembly.
The base body and the main clamp are connected by a positioning plate and a bolt, the positioning plate is arranged in grooves of the base body and the main clamp, the bolt is arranged on the side surface of the main clamp, and the end part of the bolt is propped against the outer surface of the lower end of the base body.
The circular arc structure of the coaxiality retainer is propped against the outer ring of the steering nut small assembly, and the spring pressing mechanism presses the inner ring of the steering nut small assembly.
The positioning plane at the top of the base body is propped against the end face of the bottom of the steering nut small assembly, and the profiling positioning pin is inserted into the processing hole of the steering nut small assembly.
Compared with the prior art, the utility model designs the steering nut riveting mechanism of the parallel shaft type electric power steering machine, meets the riveting requirement of small batch sample assembly trial production, has high process precision, good quality and strong universality, is convenient to change, and improves the riveting assembly efficiency of the steering nut coil.
Drawings
FIG. 1 is a cross-sectional view of a steering nut small assembly.
FIG. 2 is a schematic illustration of the clinch point of a steering nut sub-assembly.
Fig. 3 is a schematic structural view of the present utility model.
FIG. 4 is a schematic view of the riveting cylinder assembly of the present utility model.
FIG. 5 is a cross-sectional view of the riveting cylinder assembly of the present utility model.
FIG. 6 is a schematic view of the rivet assembly of the present utility model.
FIG. 7 is a schematic illustration of the connection of the riveting cylinder assembly to the height adjustment plate of the present utility model.
Fig. 8 is a schematic structural view of a mold-changing base of the present utility model.
FIG. 9 is a cross-sectional view of a retrofit base and turn nut subassembly of the present utility model.
Description of the embodiments
The utility model will now be further described with reference to the accompanying drawings.
Referring to fig. 3, the utility model relates to a steering nut riveting mechanism of a parallel shaft type electric power steering machine, which comprises a mold changing base, a riveting cylinder assembly, a height adjusting plate, a linear guide rail, a handle and a mounting bracket, wherein a ball screw is arranged on a top plate of the mounting bracket 12, the upper end of the ball screw is connected with the handle 9, the lower end of the ball screw is connected with the height adjusting plate 10, the height adjusting plate 10 is in sliding connection with the linear guide rail 11, the bottom of the height adjusting plate 10 is provided with the riveting cylinder assembly 8, a mold changing base 7 is arranged on a bottom plate of the mounting bracket 12, and the mold changing base 7 is positioned right below the riveting cylinder assembly 8.
The handle 9 is turned to adjust the height of the height adjustment plate 10, thereby ensuring the relative axial position of the riveting cylinder assembly 8 with respect to the steering nut assembly 6. The linear guide 11 ensures a high-precision reciprocating linear motion of the height adjustment plate 10.
Referring to fig. 4 and 5, the riveting cylinder assembly 8 includes a die assembly 81, a coaxiality retainer 82, a spring pressing mechanism 83, and a riveting base 84, the spring pressing mechanism 83 is installed at the center of the riveting base 84, the die assembly 81 and the coaxiality retainer 82 surround the spring pressing mechanism 83, the die assembly 81 and the coaxiality retainer 82 are arranged at intervals, and an arc structure matched with the ball bearing outer ring of the steering nut small assembly 6 is arranged at the inner side of the coaxiality retainer 82.
Referring to fig. 6, the die assembly 81 includes a die body 811, a cylinder jaw 812, the cylinder jaw 812 being mounted on the swage mount 84, the die body 811 being secured to the movable end of the cylinder jaw 812. The rivet body 811 has an equilateral triangle structure. After long-term use, the end of the bit body 811 gradually wears, and the non-worn state can be restored by only rotating the bit body 811 by 120 degrees to the cylinder jaw 812.
Referring to fig. 5, the spring pressing mechanism 83 includes a pressing piece 831, a connecting column 832, and a spring 833, the connecting column 832 is mounted on the riveting base 84, the pressing piece 831 and the spring 833 are sleeved outside the connecting column 832, and two ends of the spring 833 respectively support against the pressing piece 831 and the riveting base 84.
Referring to fig. 8, the mold-changing base 7 includes a base body 71, a main clamp 72, the main clamp 72 is connected with the bottom plate of the mounting bracket 12, the base body 71 is mounted in the center of the main clamp 72, and the top of the base body 71 is provided with a profiling positioning pin 711 matching with the processing hole 61 of the steering nut small assembly 6. Each time a different steering nut assembly 6 is switched, only the corresponding base body 71 needs to be replaced.
The base body 71 is connected with the main clamp 72 by a positioning plate 73 and a bolt 74, and the positioning plate 73 is arranged in grooves of the base body 71 and the main clamp 72 to position the circumferential position. The latch 74 is mounted to a side of the main jig 72, and an end of the latch 74 abuts against the lower outer surface of the base body 71.
Referring to fig. 3, a guide rod 14 is installed between the bottom plate and the top plate of the mounting bracket 12, the guide rod 14 passes through the height adjusting plate 10, a locking mechanism 15 is installed on the height adjusting plate 10, the end of the locking mechanism 15 abuts against the guide rod 14 or is separated from the guide rod 14, and a limiting block 13 is installed between the bottom plate of the mounting bracket 12 and the height adjusting plate 10.
The handle 4 is turned to control the height adjusting plate 10 to move up and down, the final height of the riveting cylinder assembly 8 is ensured by the limiting block 13, and finally the height adjusting plate 10 is locked on the guide rod 14 by the adjusting plate locking mechanism 15.
Referring to fig. 7, an intermediate transition ring 16 is provided between the riveting cylinder assembly 8 and the height adjusting plate 10, six waist-shaped holes 101 are provided on the surface of the height adjusting plate 10, and fasteners are fixed to the riveting cylinder assembly 8 after passing through the waist-shaped holes 101. The intermediate transition ring 16 ensures the coaxiality of the riveting cylinder assembly 8 and the height adjusting plate 10. The provision of six waist-shaped holes 101 is for convenience in adjusting the riveting angle.
In the utility model, when the steering nut small assembly 6 is installed, the positioning plane at the top of the base body 71 butts against the bottom end face of the steering nut small assembly 6 so as to ensure axial positioning. The profiling locating pin 711 is inserted into the machined hole 61 of the steering nut small assembly 6 to ensure circumferential location. As shown in fig. 9. The circular arc structure of the coaxiality retainer 82 abuts against the outer ring of the steering nut small assembly 6 to ensure the coaxiality of riveting, and the spring pressing mechanism 83 presses the inner ring of the steering nut small assembly 6 to prevent up-and-down movement caused by the riveting pressure.
When the utility model works, the steering nut small assembly 6 is placed on the model changing base 7; the handle 9 is rotated to enable the height adjusting plate 10 to descend until touching the limiting blocks 13 on two sides; tightening the two-side locking mechanisms 15 to fix the height of the height adjusting plate 10; starting a riveting cylinder assembly 8 to rivet the spiral ring of the steering nut small assembly 6; after the riveting is finished, closing the riveting cylinder assembly 8, unscrewing the locking mechanisms 15 on the two sides, and reversely rotating the handle 9 to reset the height adjusting plate 10 to the initial height; and taking out the riveted steering nut small assembly 6.
The utility model designs the steering nut riveting mechanism of the parallel shaft type electric power steering machine, meets the riveting requirement of small batch sample assembly trial production, has high process precision, good quality and strong universality, is convenient to change the shape, and improves the riveting assembly efficiency of the steering nut helicoids.
Claims (9)
1. The utility model provides a steering nut riveting mechanism of parallel shaft type electric power steering machine, includes trading base, riveting cylinder assembly, altitude mixture control board, linear guide, handle, installing support, its characterized in that: the top plate of the mounting bracket (12) is provided with a ball screw, the upper end of the ball screw is connected with the handle (9), the lower end of the ball screw is connected with the height adjusting plate (10), the height adjusting plate (10) is in sliding connection with the linear guide rail (11), the bottom of the height adjusting plate (10) is provided with the riveting cylinder assembly (8), the bottom plate of the mounting bracket (12) is provided with the mold changing base (7), the mold changing base (7) is positioned under the riveting cylinder assembly (8),
The riveting cylinder assembly (8) comprises a rivet head assembly (81), a coaxiality retainer (82), a spring pressing mechanism (83) and a riveting base (84), the spring pressing mechanism (83) is arranged in the center of the riveting base (84), the rivet head assembly (81) and the coaxiality retainer (82) encircle the outside of the spring pressing mechanism (83), the rivet head assembly (81) and the coaxiality retainer (82) are arranged at intervals, the inner side of the coaxiality retainer (82) is provided with an arc structure matched with the ball bearing outer ring of the steering nut small assembly (6),
The mold-changing base (7) comprises a base body (71), a main clamp (72), wherein the main clamp (72) is connected with a bottom plate of the mounting bracket (12), the base body (71) is arranged in the center of the main clamp (72), and a profiling locating pin (711) matched with a machining hole (61) of the steering nut small assembly (6) is arranged at the top of the base body (71).
2. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: a guide rod (14) is arranged between the bottom plate and the top plate of the mounting bracket (12), the guide rod (14) penetrates through the height adjusting plate (10), a locking mechanism (15) is arranged on the height adjusting plate (10), the end part of the locking mechanism (15) props against the guide rod (14) or is separated from the guide rod (14), and a limiting block (13) is arranged between the bottom plate of the mounting bracket (12) and the height adjusting plate (10).
3. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: the rivet assembly (81) comprises a rivet body (811) and a cylinder clamping jaw (812), wherein the cylinder clamping jaw (812) is arranged on the riveting base (84), and the rivet body (811) is fixed at the movable end of the cylinder clamping jaw (812).
4. A steering nut riveting mechanism of a parallel shaft electric power steering machine as claimed in claim 3, wherein: the rivet head body (811) is of an equilateral triangle structure.
5. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: the spring pressing mechanism (83) comprises a pressing sheet (831), a connecting column (832) and a spring (833), wherein the connecting column (832) is arranged on the riveting base (84), the pressing sheet (831) and the spring (833) are sleeved outside the connecting column (832), and two ends of the spring (833) respectively prop against the pressing sheet (831) and the riveting base (84).
6. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: an intermediate transition ring (16) is arranged between the riveting cylinder assembly (8) and the height adjusting plate (10), six waist-shaped holes (101) are formed in the surface of the height adjusting plate (10), and the fastening piece penetrates through the waist-shaped holes (101) and then is fixed with the riveting cylinder assembly (8).
7. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: the base body (71) and the main clamp (72) are connected by adopting a positioning plate (73) and a bolt (74), the positioning plate (73) is arranged in grooves of the base body (71) and the main clamp (72), the bolt (74) is arranged on the side surface of the main clamp (72), and the end part of the bolt (74) is propped against the outer surface of the lower end of the base body (71).
8. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: the arc structure of the coaxiality retainer (82) props against the outer ring of the steering nut small assembly (6), and the spring pressing mechanism (83) presses the inner ring of the steering nut small assembly (6).
9. The steering nut riveting mechanism of a parallel shaft type electric power steering machine according to claim 1, wherein: the positioning plane at the top of the base body (71) is propped against the bottom end face of the steering nut small assembly (6), and the profiling positioning pin (711) is inserted into the processing hole (61) of the steering nut small assembly (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323091371.9U CN221494948U (en) | 2023-11-16 | 2023-11-16 | Steering nut riveting mechanism of parallel shaft type electric power steering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323091371.9U CN221494948U (en) | 2023-11-16 | 2023-11-16 | Steering nut riveting mechanism of parallel shaft type electric power steering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221494948U true CN221494948U (en) | 2024-08-09 |
Family
ID=92122169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323091371.9U Active CN221494948U (en) | 2023-11-16 | 2023-11-16 | Steering nut riveting mechanism of parallel shaft type electric power steering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221494948U (en) |
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2023
- 2023-11-16 CN CN202323091371.9U patent/CN221494948U/en active Active
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