Aluminum alloy nut tightening and pre-oiling device

Abstract

The utility model relates to the technical field of steering systems, in particular to an aluminum alloy nut tightening and pre-oiling device. An aluminum alloy nut tightening and pre-oiling device comprises a lower base, a nut profiling tool and an in-place sensor and is characterized in that the nut profiling tool is arranged at the upper end of the lower base, the lower end of the lower base is connected with an oil pipe mounting seat, and the bottom of the oil pipe mounting seat is connected with a bottom plate through a connecting block; a sensor mounting hole is formed in the lower base, the upper part of the in-place sensor is mounted in the sensor mounting hole of the lower base, and the lower part of the in-place sensor is positioned in the oil pipe mounting seat; a through hole is formed in the middle of the oil pipe mounting seat, a lower base oil inlet is formed in the through hole, an outlet of the lower base oil inlet is connected with a grease hose, and the grease hose is arranged in the oil pipe mounting seat. Compared with the prior art, the aluminum alloy nut tightening and pre-oiling device replaces a traditional manual oiling mode, oiling is more uniform before aluminum alloy is tightened, and the oiling amount of each time is easier to control.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, specifically to an aluminum alloy nut tightening pre-oiling device. Background Technology

[0002] In the production process of electric power steering columns, aluminum alloy nuts need to be tightened into aluminum alloy housings. Due to the low hardness and high ductility of aluminum alloy, compared to traditional carbon steel nuts and threads, aluminum alloy threaded nuts are more prone to thread deformation during tightening, leading to the generation of aluminum shavings and resulting in unqualified tightening. Therefore, manual oiling is often required during the tightening process of aluminum alloy nuts. However, the amount of oil applied manually is uneven and difficult to control, resulting in a consistently high failure rate in the tightening process of aluminum alloy nuts. Therefore, it is urgent to design a pre-oiling device for tightening aluminum alloy nuts. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides an aluminum alloy nut tightening pre-oiling device, which replaces the traditional manual oiling method, making the oiling of aluminum alloy nuts more uniform before tightening and making it easier to control the amount of oil applied each time.

[0004] To achieve the above objectives, an aluminum alloy nut tightening pre-oiling device is designed, comprising a lower base, a nut-conforming fixture, and an in-situ sensor. The device is characterized by: a nut-conforming fixture at the upper end of the lower base; an oil pipe mounting seat connected to the lower end of the lower base; the bottom of the oil pipe mounting seat connected to a base plate via a connecting block; a sensor mounting hole on the lower base; the upper part of the in-situ sensor installed within the sensor mounting hole on the lower base; and the lower part of the in-situ sensor located within the oil pipe mounting seat. A through hole in the middle of the oil pipe mounting seat contains an oil inlet for the lower base, and the outlet of the oil inlet is connected to a grease hose, which is positioned within the oil pipe mounting seat.

[0005] The nut-following fixture is a circular module structure and is hollow, with several oil outlets located on the inner hole surface of the nut-following fixture.

[0006] The oil outlet has at least four outlets.

[0007] The inlet of the lower base oil inlet is connected to a metering valve via a pipe, the outlet of the lower base oil inlet is connected to the inlet of the grease hose, and the outlet of the grease hose is connected to the hollow inner cavity of the mother conforming tool.

[0008] The in-situ sensor is connected to a metering valve via a signal line, and the metering valve is installed on the grease delivery pipeline.

[0009] The lower base is a rectangular module structure, and an oil storage hole is provided on the lower base.

[0010] The lower base is connected to the oil pipe mounting seat by bolts, the oil pipe mounting seat is connected to the top of the connecting block by bolts, and the bottom of the connecting block is connected to the base plate by bolts.

[0011] The connecting block is a rectangular module structure, and there are two connecting blocks, which are located on the front and rear sides below the oil pipe mounting base, respectively.

[0012] Compared with the prior art, this utility model provides an aluminum alloy nut tightening pre-oiling device to replace the traditional manual oiling method, making the oiling of aluminum alloy more uniform before tightening and making it easier to control the amount of oil applied each time.

[0013] By statistically analyzing the relationship between different coating amounts and defect rates, and solidifying process parameters, batch scrapping caused by coating differences can be reduced, saving material and labor costs and avoiding production waste. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a cross-sectional view of the upper structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model in use. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figures 1 to 3 As shown, the upper end of the lower base 6 is provided with a nut-shaped tooling 2, and the lower end of the lower base 6 is connected to the oil pipe mounting seat 9. The bottom of the oil pipe mounting seat 9 is connected to the base plate 8 through the connecting block 10. A sensor mounting hole is provided on the lower base 6. The upper part of the in-position sensor 3 is installed in the sensor mounting hole of the lower base 6, and the lower part of the in-position sensor 3 is located in the oil pipe mounting seat 9. A through hole is provided in the middle of the oil pipe mounting seat 9. The oil inlet 4 of the lower base is provided in the through hole. The outlet of the oil inlet 4 of the lower base is connected to the grease hose 7. The grease hose 7 is set in the oil pipe mounting seat 9.

[0019] The nut-following fixture 2 has a circular module structure and a hollow structure. Several oil outlets 5 are provided on the inner hole surface of the nut-following fixture 2.

[0020] There are at least 4 oil outlets 5.

[0021] The inlet of the lower base oil inlet 4 is connected to a metering valve through a pipe, the outlet of the lower base oil inlet 4 is connected to the inlet of the grease hose 7, and the outlet of the grease hose 7 is connected to the hollow inner cavity of the female contour tooling 2.

[0022] In-situ sensor 3 is connected to a metering valve via a signal line, and the metering valve is installed on the grease delivery pipeline.

[0023] The lower base 6 is a rectangular module structure, and an oil storage hole is provided on the lower base 6.

[0024] The lower base 6 is connected to the oil pipe mounting seat 9 by bolts, the oil pipe mounting seat 9 is connected to the top of the connecting block 10 by bolts, and the bottom of the connecting block 10 is connected to the base plate 8 by bolts.

[0025] The connecting block 10 has a rectangular module structure. There are two connecting blocks 10, and the two connecting blocks 10 are located on the front and rear sides below the oil pipe mounting base 9, respectively.

[0026] Before tightening the aluminum alloy nut 1, place the aluminum alloy nut 1 on the nut-contouring fixture 2 of this utility model. When the in-situ sensor 3 detects the presence of the aluminum alloy nut 1, the PLC program transmits the command to the metering valve (the metering valve is set on the grease delivery pipeline outside the device of this utility model). After receiving the command, the metering valve sprays out a fixed amount of oil through the oil circuit, thereby adhering a fixed amount of grease to the aluminum alloy nut 1.

[0027] The working principle of this utility model:

[0028] 1. Place the aluminum alloy nut 1 on the nut-contouring fixture 2;

[0029] 2. The in-situ sensor 3 detects the presence of the aluminum alloy nut 1 and transmits the signal to the metering valve through the signal line;

[0030] 3. After receiving the command, the metering valve starts to inject oil. The grease is squeezed through the oil inlet 4 of the lower base and the grease hose 7 to the oil outlet 5 of the nut contour tool 2, so that the aluminum alloy nut 1 is stuck with grease in a fixed position.

[0031] The beneficial effects of this utility model are as follows:

[0032] 1. By using a stable oiling method, it replaces the traditional manual oiling, and the oiling amount is more uniform, reducing the scrap of aluminum alloy nuts due to uneven or insufficient oiling. At the same time, stable automatic oiling reduces oil consumption, thereby reducing unit cost.

[0033] 2. The design structure is based on a universal principle. By providing a quantitative valve signal through a position sensor, the amount of oil injected each time is controlled by air pressure, making the amount of oil injected more uniform, and it can be adjusted by a program.

[0034] 3. The testing tools have a simple structure, low cost, and strong practicality.

[0035] 4. Simple operation, even oil application, reduces the number of steps for employees, improves production cycle, and reduces oil waste.

Claims

1. An aluminum alloy nut tightening pre-oiling device, comprising a lower base, a nut profiling tool, an in-position sensor, characterized in that: The upper end of the lower base (6) is provided with a nut profiling tool (2), the lower end of the lower base (6) is connected with an oil pipe mounting base (9), the bottom of the oil pipe mounting base (9) is connected with a bottom plate (8) through a connecting block (10); a sensor mounting hole is arranged on the lower base (6), the upper part of the in-situ sensor (3) is mounted in the sensor mounting hole of the lower base (6), and the lower part of the in-situ sensor (3) is located in the oil pipe mounting base (9); the middle part of the oil pipe mounting base (9) is provided with a through hole, the through hole is provided with a lower base oil inlet (4), the outlet of the lower base oil inlet (4) is connected with a grease hose (7), and the grease hose (7) is arranged in the oil pipe mounting base (9).

2. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 1, wherein: The nut profiling tool (2) is a circular ring module structure, and the nut profiling tool (2) is a hollow structure, a plurality of oil outlets (5) are arranged on the inner hole surface of the nut profiling tool (2).

3. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 2, wherein: The oil outlet (5) is provided with at least four.

4. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 1, wherein: The inlet of the lower base oil inlet (4) is connected with a quantitative valve through a pipeline, the outlet of the lower base oil inlet (4) is connected with the oil inlet of the grease hose (7), and the oil outlet of the grease hose (7) is connected with the hollow inner cavity of the nut profiling tool (2).

5. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 1, wherein: The in-situ sensor (3) is connected with the quantitative valve through a signal line, and the quantitative valve is installed on the grease conveying pipeline.

6. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 1, wherein: The lower base (6) is a rectangular module structure, and an oil storage hole is arranged on the lower base (6).

7. The pre-oiling device for tightening aluminum alloy nut according to claim 1 or 6, characterized in that: The lower base (6) is connected with the oil pipe mounting base (9) through bolts, the oil pipe mounting base (9) is connected with the top of the connecting block (10) through bolts, and the bottom of the connecting block (10) is connected with the bottom plate (8) through bolts.

8. The apparatus for pre-coating oil for tightening of an aluminum alloy nut according to claim 1, wherein: The connecting block (10) is a rectangular module structure, and the connecting block (10) is provided with two, and the two connecting blocks (10) are respectively located at the front and rear positions below the oil pipe mounting base (9).

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