Reworking device of electronic power-assisted tubular column steel pin press-fitting shell
By designing a rework device for the press-fit shell of the electronic power-assisted pipe column steel pin, the unqualified parts are fixed and tapped, the scrapping problem caused by fluctuations in the incoming material size is solved, and the rework and reuse of the unqualified parts are realized, and the product scrapping rate is reduced.
Patent Information
- Application Number
- CN202422336732.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-25
AI Technical Summary
During the production process of electronic power-assisted pipe columns, the pressure-input force deviation caused by fluctuations in the size of the shell or steel pins can only be scrapped, and the existing technology has failed to effectively solve this problem.
A rework device for press-fitting shell of the electronic power-assisted pipe column steel pin is designed. By fixing the unqualified parts and tapping the inner hole of the steel pin, the steel pin is pulled out by using a manual pulling device to achieve the rework of the small assembly of the unqualified shell.
It reduces the scrap rate of the product, realizes the reuse of unqualified parts, and improves production efficiency and economic benefits.
Smart Images
Figure CN223235552U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machinery, in particular to a reworking device for press-fitting a housing with a steel pin of an electronic power-assisting pipe column. Background Art
[0002] In the production process of the electronic power steering column, there is an assembly station where a steel pin is pressed into the small housing assembly. This station presses the steel pin into the interior of the housing so that the end face of the steel pin is close to the end face of the bushing inside the small housing assembly, and controls the gap between the steel pin and the bushing end face within 0.04mm. At the same time, it ensures that during the entire pressing process, the steel pin pressing force meets the drawing specification of 3 to 15kN.
[0003] Due to fluctuations in the incoming dimensions of the housing or steel pin, when the press-in force during automated assembly deviates from the specified specification, or when problems with the fit between the worm gear and the worm lead to substandard friction torque after pressing, these subassemblies can be rejected. Currently, these subassemblies are scrapped.
[0004] Therefore, it is necessary to design a rework device for the electronic power steering column steel pin press-fitting housing to rework the unqualified parts of the steel pin pressed into the housing small assembly, thereby reducing the scrap rate of the product. Summary of the Invention
[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a rework device for the electronic power steering column steel pin press-fitting housing, so as to rework the unqualified parts of the steel pin pressed into the housing small assembly, thereby reducing the scrap rate of the product.
[0006] In order to achieve the above-mentioned purpose, the utility model is a reworking device for pressing the steel pin of an electronic power-assisted pipe column into the shell, comprising a base plate, a slide rail, a clamping mechanism, a tapping mechanism, a positioning support tooling, and a base. The base, the clamping mechanism, and the slide rail are installed on the base plate. The clamping mechanism is located on the side of the base, one end of the slide rail extends to the front of the base, and the other end of the slide rail extends to the edge of the base plate. The tapping mechanism is slidably connected to the slide rail, and a positioning support tooling is installed on the top of the base. The positioning support tooling comprises a tooling base, a positioning pin base, a positioning pin, a shell support limit block, a shell lower guard tube limit block, and a steering shaft support. Two shell support limit blocks are provided in the middle of the tooling base, and the shell lower guard tube limit block and the steering shaft support are respectively located on both sides of the shell support limit block. The positioning pin base is located at the front end of the shell support limit block, and two positioning pins are installed on the positioning pin base.
[0007] The clamping mechanism includes a clamping base, an elbow clamp support block, an elbow clamp, a clamping handle, and a pressure head. The elbow clamp support block is installed on the clamping base. The elbow clamp is rotatably connected to the elbow clamp support block. One end of the elbow clamp is connected to the clamping handle. The other end of the elbow clamp is installed with a pressure head, which presses against the upper end of the shell of the unqualified part.
[0008] The tapping mechanism includes a tapping slider, a tapping mounting block, a tap, a tapping handle, and a spring. The tapping slider is slidably connected to the slide rail, the tapping mounting block is fixed on the tapping slider, the tap passes through the tapping slider, a tapping handle is installed at the tail of the tap, and a spring is installed between the tapping handle and the tapping mounting block.
[0009] The base surface is installed with a baffle and a connector. The baffle is located on the side close to the tapping mechanism, and the connector is located on both sides of the baffle opening. The baffle is against the side of the tooling base, and the connector is embedded in the groove on the edge of the tooling base.
[0010] A notch is provided at a position of the base close to the tapping mechanism, and an impurity collection box is placed below the notch.
[0011] The positioning pin matches the shell mounting hole of the unqualified part, the shell support limit block and the shell lower protective tube limit block match the outer surface of the shell of the unqualified part, and the steering shaft support matches the steering shaft of the unqualified part.
[0012] The upper end of the steering shaft support is V-shaped.
[0013] Compared with the existing technology, the utility model designs a rework device for the electronic power steering column steel pin press-fit shell, fixes the unqualified parts and taps the inner hole of the steel pin, so that the manual pulling device can pull out the steel pin of the unqualified part, thereby realizing the return of the unqualified shell small assembly after rework to the production line for continued use, reducing the product scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural diagram of the present utility model.
[0015] Figure 2 This is a structural diagram of the positioning support tooling of the utility model.
[0016] Figure 3 This is a schematic diagram of the structure of the utility model without the positioning support tooling.
[0017] Figure 4 This is a diagram of the usage state of the utility model. DETAILED DESCRIPTION
[0018] The present invention will now be further described with reference to the accompanying drawings.
[0019] See also Figure 1 、 Figure 2 and Figure 3The utility model is a reworking device for pressing the steel pin of an electronic power-assisted pipe column into a shell, comprising a base plate, a slide rail, a pressing mechanism, a tapping mechanism, a positioning support tooling, and a base. A base 6, a pressing mechanism 3, and a slide rail 2 are installed on the base plate 1. The pressing mechanism 3 is located on the side of the base 6, one end of the slide rail 2 extends to the front of the base 6, and the other end of the slide rail 2 extends to the edge of the base plate 1. The tapping mechanism 4 is slidably connected to the slide rail 2. A positioning support tooling 5 is installed on the top of the base 6. The positioning support tooling 5 includes a tooling base 51, a positioning pin base 52, a positioning pin 53, a shell support limit block 54, a shell lower protective tube limit block 55, and a steering shaft support 56. Two shell support limit blocks 54 are provided in the middle of the tooling base 51. The shell lower protective tube limit block 55 and the steering shaft support 56 are respectively located on both sides of the shell support limit block 54. The positioning pin base 52 is located at the front end of the shell support limit block 54, and two positioning pins 53 are installed on the positioning pin base 52.
[0020] The clamping mechanism 3 includes a clamping base 31, a toggle clamp support block 32, a toggle clamp 33, a clamping handle 34, and a pressing head 35. The toggle clamp support block 32 is installed on the clamping base 31. The toggle clamp 33 is rotatably connected to the toggle clamp support block 32. One end of the toggle clamp 33 is connected to the clamping handle 34. The other end of the toggle clamp 33 is installed with a pressing head 35, which presses against the upper end of the shell of the unqualified part 8.
[0021] The tapping mechanism 4 includes a tapping slider 41, a tapping mounting block 42, a tap 43, a tapping handle 44, and a spring 45. The tapping slider 41 is slidably connected to the slide rail 2, the tapping mounting block 42 is fixed on the tapping slider 41, the tap 43 passes through the tapping slider 41, and a tapping handle 44 is installed at the tail of the tap 43. A spring 45 is installed between the tapping handle 44 and the tapping mounting block 42.
[0022] The slide rail 2 is provided to facilitate the operator to take and place the unqualified parts 8, and to prevent the rework tap 43 from being accidentally damaged when taking and placing the unqualified parts 8.
[0023] A baffle 61 and a connecting piece 62 are installed on the surface of the base 6. The baffle 61 is located on the side close to the tapping mechanism 4, and the connecting piece 62 is located on both sides of the opening position of the baffle 61. The baffle 61 is against the side of the tooling base 51, and the connecting piece 62 is embedded in the groove 511 on the edge of the tooling base 51, so that the tooling base 51 can be firmly fixed on the base 6.
[0024] A notch 63 is provided on the base 6 near the tapping mechanism 4 , and an impurity collecting box 7 is placed below the notch 63 to collect metal impurities generated by tapping.
[0025] The positioning pin 53 mates with the housing mounting hole of the defective part 8, the housing support stopper 54 and the housing lower protective tube stopper 55 mate with the outer surface of the housing of the defective part 8, and the steering shaft support 56 mates with the steering shaft of the defective part 8. The upper end of the steering shaft support 56 is V-shaped. Different positioning support fixtures 5 can be designed according to different models of defective parts 8 to facilitate replacement.
[0026] See also Figure 4 When the utility model is in operation, the housing mounting hole of the unqualified part 8 is installed on the positioning pin 53, and the unqualified part 8 is fixed by the clamping mechanism 3 and the housing support limit block 54. The tapping mechanism 4 is moved to a suitable position on the slide rail 2, and the inner hole of the steel pin of the unqualified part 8 is manually tapped. After the tapping is completed, the tapping mechanism 4 is moved away from the slide rail 2, and a manual pulling device, such as a puller device, is used to tighten the steel pin hole with a screw. Since the housing support limit block 54 is against the unqualified part 8, the puller device can be used to manually pull the steel pin of the unqualified part 8 out.
[0027] If necessary, the tapping mechanism 4 can be provided with a steel pin tapping depth limit device and a torque mechanical clutch device to simultaneously control the tapping depth of the steel pin hole of the unqualified part 8 and the torque limit of the tap during the tapping process, so as to prevent the tap from breaking due to excessive tapping depth damaging the rubber end face of the bushing inside the shell and excessive torque applied to the tap during the tapping process.
[0028] The utility model designs a rework device for the electronic power steering column steel pin press-fit shell, which fixes the unqualified parts and taps the inner hole of the steel pin, so that a manual pulling device can pull out the steel pin of the unqualified part, thereby enabling the unqualified shell small assembly to be returned to the production line for continued use after rework, reducing the product scrap rate.
Claims
1. A rework device for the press-fit housing of an electronic power steering column steel pin, comprising a base plate, a slide rail, a clamping mechanism, a tapping mechanism, a positioning support tool, and a base, characterized in that: A base (6), a clamping mechanism (3), and a slide rail (2) are installed on the bottom plate (1). The clamping mechanism (3) is located on the side of the base (6). One end of the slide rail (2) extends to the front of the base (6), and the other end of the slide rail (2) extends to the edge of the bottom plate (1). The tapping mechanism (4) is slidably connected to the slide rail (2). A positioning support tool (5) is installed on the top of the base (6). The positioning support tool (5) includes a tool base (51), a positioning pin base (52), a positioning pin (53), a shell support limit block (54), a shell lower protective tube limit block (55), and a steering shaft support member (56). Two shell support limit blocks (54) are provided in the middle of the tool base (51). The shell lower protective tube limit block (55) and the steering shaft support member (56) are respectively located on both sides of the shell support limit block (54). The positioning pin base (52) is located at the front end of the shell support limit block (54). Two positioning pins (53) are installed on the positioning pin base (52).
2. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 1 is characterized in that: The clamping mechanism (3) includes a clamping base (31), a toggle clamp support block (32), a toggle clamp (33), a clamping handle (34), and a pressure head (35). The clamping base (31) is provided with a toggle clamp support block (32). The toggle clamp (33) is rotatably connected to the toggle clamp support block (32). One end of the toggle clamp (33) is connected to the clamping handle (34). The other end of the toggle clamp (33) is provided with a pressure head (35). The pressure head (35) abuts against the upper end of the shell of the unqualified part (8).
3. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 1 is characterized in that: The tapping mechanism (4) includes a tapping slider (41), a tapping mounting block (42), a tap (43), a tapping handle (44), and a spring (45). The tapping slider (41) is slidably connected to the slide rail (2). The tapping mounting block (42) is fixed on the tapping slider (41). The tap (43) passes through the tapping slider (41). A tapping handle (44) is installed at the tail of the tap (43). A spring (45) is installed between the tapping handle (44) and the tapping mounting block (42).
4. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 1 is characterized in that: A baffle (61) and a connecting piece (62) are mounted on the surface of the base (6), the baffle (61) is located on a side close to the tapping mechanism (4), the connecting piece (62) is located on both sides of the opening of the baffle (61), the baffle (61) abuts against the side of the tooling base (51), and the connecting piece (62) is embedded in a groove (511) on the edge of the tooling base (51).
5. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 1 is characterized in that: The base (6) is provided with a notch (63) near the tapping mechanism (4), and an impurity collection box (7) is placed below the notch (63).
6. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 1 is characterized in that: The positioning pin (53) matches the housing mounting hole of the unqualified part (8), the housing support limit block (54) and the housing lower protective tube limit block (55) match the outer surface of the housing of the unqualified part (8), and the steering shaft support member (56) matches the steering shaft of the unqualified part (8).
7. The reworking device for the press-fit housing of the electronic power steering column steel pin according to claim 6, characterized in that: The upper end of the steering shaft support (56) is V-shaped.