Novel positioning harness for improving assembling precision of automobile engine cover
By designing a new positioning assembly, leveraging the synergy of its multiple components, the problem of poor assembly accuracy of the automobile engine cover is solved, and a more efficient and accurate assembly process is achieved, reducing resource waste.
Patent Information
- Application Number
- CN202421895622.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The assembly accuracy of existing automobile engine covers is poor, which leads to the need to open multiple workstations for rework correction, resulting in waste of resources.
A new type of positioning equipment is designed, including the positioning equipment main body, connecting plate, connecting vertical plate, engine cover nylon support block, engine cover positioning pin, vehicle body positioning pin and positioning block, etc. Through the synergy of these components, the precise positioning and installation of the engine cover is achieved.
It improves the engine cover assembly accuracy, reduces the number of reworks, improves assembly efficiency and quality, reduces resource waste, and is easy to operate and simple to maintain.
Smart Images
Figure CN222876138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a novel positioning fixture for improving the assembly accuracy of an automobile engine cover. Background Art
[0002] The car hood, also known as the hood or front hatch, is an important external component of the vehicle. Its main function is to protect the engine and other mechanical and electronic components in the front cabin from the impact of the external environment, such as rain, dust, gravel, etc. With the rapid development of the ever-changing automobile industry, the competition in my country's automobile industry has become increasingly fierce. With the increasing industrial requirements, equipment renewal and optimization have become the mainstream development direction of major OEMs and parts factories. In order to adapt to the ever-changing market demand, the industry has higher and higher requirements for the functionality of automobile manufacturing equipment. The assembly accuracy of the car hood directly affects the overall quality and appearance of the vehicle, including whether the gap between the hood and the body is uniform, whether the opening and closing is smooth, and whether there is noise or vibration.
[0003] Currently, major automobile manufacturers have to set up multiple workstations to rework and correct the poor assembly accuracy of engine covers, resulting in a certain degree of resource waste.
[0004] Therefore, it is urgent to design a kind of novel automobile that can solve the above-mentioned problem and improve the positioning fixture of automobile engine cover assembly precision. Utility Model Content
[0005] The purpose of the utility model is to provide a new positioning fixture for improving the assembly accuracy of automobile engine hoods, so as to solve the problem of poor assembly accuracy of engine hoods in the current market, which requires opening multiple workstations for rework and correction, resulting in a certain degree of resource waste.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of positioning fixture for improving the assembly accuracy of a car engine hood, comprising a positioning fixture body, a connecting plate is provided on the positioning fixture body, and a connecting vertical plate is connected above the connecting plate, a reinforcing baffle is connected to the upper end of the connecting vertical plate, and an engine hood nylon support block is installed between the reinforcing baffles, an engine hood locating pin is also provided on one side above the connecting plate, and a first vehicle body locating pin and a second vehicle body locating pin are provided below the connecting plate, a first vehicle body locating block, a second vehicle body locating block and a third vehicle body locating block are also evenly fixed on the bottom of the connecting plate, and an auxiliary clamp is rotatably installed on the bottom of the connecting plate.
[0007] Preferably, there are two nylon support blocks on the engine cover, and the upper end surfaces of the nylon support blocks on the engine cover are inclined, an inclined surface is formed between the nylon support blocks on the engine cover, and the upper end surface of the nylon support blocks on the engine cover is higher than the upper end surface of the reinforcing baffle.
[0008] Preferably, the connecting vertical plates and the connecting plates are both made of aluminum, and through holes for weight reduction are respectively provided on the connecting vertical plates and the connecting plates.
[0009] Preferably, an engine hood installation positioning guide rod is also installed on the side of the connecting vertical plate, and the engine hood installation positioning guide rod is close to the high-end engine hood nylon support block.
[0010] Preferably, an L-shaped connector is screwed and fixed above the connecting plate at the position where the engine cover locating pin is fixed, and the L-shaped connector above the connecting plate is screwed and fixed to a first locating seat, and the engine cover locating pin passes through the end of the first locating seat.
[0011] Preferably, an L-shaped connector is screwed and fixed to the position where the locating pin on the first body and the locating pin on the second body are installed below the connecting plate, and the L-shaped connector below the connecting plate is screwed and fixed to the second positioning seat, and the locating pin on the first body is installed through the end of the second positioning seat.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) The new positioning fixture for improving the assembly accuracy of automobile engine hood optimizes the automobile engine hood assembly tooling, which can improve the automobile engine assembly efficiency and assembly accuracy. At the same time, it is easy to operate and labor-saving, has reliable positioning, short engine hood assembly time, convenient maintenance, long service life, stable engine hood matching, and fast and one-time assembly.
[0014] (2) The new positioning fixture for improving the assembly accuracy of the automobile engine hood uses positioning pins to fix the position on the vehicle body, and uses the holes of the engine hood to position and control the position of the engine hood in the X and Y directions to ensure the position accuracy of the engine hood.
[0015] (3) The new positioning fixture for improving the assembly accuracy of the automobile engine hood limits the position through the positioning surface, supports and positions the fixture on the vehicle body, and simultaneously positions and supports the engine hood to ensure the Z-axis positioning accuracy of the engine hood.
[0016] (4) This new type of positioning fixture that improves the assembly accuracy of the automobile engine cover completes all positioning connections through a weight-reducing aluminum plate, reduces weight, and facilitates personnel to operate the fixture efficiently.
[0017] (5) The new positioning fixture for improving the assembly accuracy of the automobile engine hood is composed of a scratch-resistant nylon positioning block to support and position the engine hood to avoid scratches on the surface of the engine hood. At the same time, the positioning block has the advantage of being light and can ensure the consistency and stability of large-area support. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional structural schematic diagram of a new positioning fixture for improving the assembly accuracy of an automobile engine cover according to the utility model;
[0019] Figure 2 This is a schematic diagram of the connecting plate structure of a new type of positioning fixture for improving the assembly accuracy of the automobile engine cover of the utility model;
[0020] Figure 3 This is a schematic diagram of the connection structure between the engine cover positioning pin and the first positioning seat of a new positioning fixture for improving the assembly accuracy of the automobile engine cover of the utility model;
[0021] Figure 4 The utility model is a schematic diagram of the connection structure between a first positioning pin on a vehicle body and a second positioning seat of a new positioning fixture for improving the assembly accuracy of a vehicle engine cover.
[0022] In the figure: 1. Reinforced baffle; 2. Nylon support block for engine cover; 201. Connecting vertical plate; 3. Locating pin for engine cover; 301. First locating seat; 4. Locating pin on first body; 401. Second locating seat; 5. Locating block on first body; 6. Locating block on second body; 7. Locating pin on second body; 8. Locating block on third body; 9. Auxiliary clamp; 10. Locating guide rod for installing engine cover; 11. Connecting plate; 12. Positioning fixture body; 13. L-shaped connector. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0024] See also Figure 1-4The utility model provides a technical solution: a new type of positioning fixture for improving the assembly accuracy of the automobile engine cover, including a positioning fixture body 12, a connecting plate 11 is provided on the positioning fixture body 12, and a connecting vertical plate 201 is connected to the upper part of the connecting plate 11, the connecting vertical plate 201 and the connecting plate 11 are both made of aluminum, and the connecting vertical plate 201 and the connecting plate 11 are respectively provided with through holes for weight reduction, this structure enables the connecting plate 11 to connect and fix the upper and lower positioning structures, while reducing the weight, which is conducive to the efficient operation of the fixture by the assembler, the upper end of the connecting vertical plate 201 is connected to a reinforcing baffle 1, and an engine cover nylon support block 2 is installed between the reinforcing baffles 1, the engine cover nylon support block 2 is provided with two, and the upper end of the engine cover nylon support block 2 The surfaces are all inclined, and the nylon support blocks 2 of the engine hood form an inclined surface, and the upper end surface of the nylon support block 2 of the engine hood is higher than the upper end surface of the reinforcing baffle 1. This structure can support the bottom of the engine hood through the nylon support block 2 of the engine hood, so that the engine hood is in an inclined state, so that the engine hood can be assembled to the vehicle body. The reinforcing baffle 1 is used for structural reinforcement of the nylon support block 2 of the engine hood, and the nylon material of the nylon support block 2 of the engine hood has a lightweight effect, which reduces the weight of the positioning fixture body 12. At the same time, in addition to supporting the engine hood, the nylon support block 2 of the engine hood can also avoid scratching the engine hood. A hood locating pin 3 is also provided on one side above the connecting plate 11, and a first vehicle body locating pin 4 and a second vehicle body locating pin 7 are provided below the connecting plate 11. A hood installation positioning guide rod 10 is also installed on the side of the connecting vertical plate 201, and the hood installation positioning guide rod 10 is close to the high-end hood nylon support block 2. This structure can guide the hood through the hood installation positioning guide rod 10, so that the hood can be smoothly fixed to the positioning fixture body 12. The first body positioning block 5, the second body positioning block 6 and the third body positioning block 8 are evenly fixed at the bottom of the connecting plate 11, and an auxiliary clamping member 9 is rotatably installed at the bottom of the connecting plate 11. The auxiliary clamping member 9 is an auxiliary positioning structure on the existing hood assembly fixture, which makes the fixture and the body relatively reliably connected to ensure assembly accuracy. The top of the connecting plate 11 is screwed and fixed at the position where the hood positioning pin 3 is fixed There is an L-shaped connector 13, and the L-shaped connector 13 above the connecting plate 11 is fixed with a first positioning seat 301 by screwing, and the engine cover positioning pin 3 runs through the end of the first positioning seat 301. This structure adopts the L-shaped connector 13 to firmly position the first positioning seat 301, and according to the installation requirements of the engine cover positioning pin 3, the angle of the engine cover positioning pin 3 is adjusted, so that the engine cover positioning pin 3 can be connected with the corresponding snap connection on the engine cover to achieve accurate positioning of the engine cover in the X and Y directions. The position where the positioning pin 4 on the first body and the positioning pin 7 on the second body are installed is also screwed and fixed with an L-shaped connector 13 below the connecting plate 11, and the L-shaped connector 13 below the connecting plate 11 is fixed with a second positioning seat 401 by screwing.The first body positioning pin 4 is installed through the end of the second positioning seat 401. This structure allows the second positioning seat 401 to be fixed to the bottom of the connecting plate 11 through the L-shaped connector 13, so that the first body positioning pin 4 can correspond to the through hole at the corresponding position on the body, so as to realize the positioning of the positioning fixture body 12 and the body. In the process of the positioning fixture body 12 supporting the body, the positioning fixture body 12 is reliably supported by the evenly distributed first body positioning block 5, second body positioning block 6 and third body positioning block 8.
[0025] Working principle: When using the new positioning fixture for improving the assembly accuracy of the automobile engine hood, firstly, the automobile engine hood is assembled and positioned through the positioning fixture body 12, and the engine hood is positioned and guided through the engine hood installation positioning guide rod 10, so that the engine hood is positioned on the positioning fixture body 12, and the engine hood positioning pin 3 is aligned with the through hole corresponding to the position on the engine hood, and the position of the engine hood in the X and Y directions is controlled by the hole positioning of the engine hood to ensure the position accuracy of the engine hood. At the same time, the engine hood nylon support block 2 performs a large-area support treatment on the engine hood to ensure the stability of the engine hood positioning and avoid scratching the engine hood surface. The strengthening baffle 1 plays a structural strengthening role in the positioning of the engine hood nylon support block 2, and the connecting vertical plate 201 is used to strengthen the stable connection between the baffle 1 and the connecting plate 11. The positioning fixture body 12 corresponds to the body through the first body positioning pin 4 and the second body positioning pin 7. The through holes are aligned to realize the positioning of the positioning fixture body 12. The first positioning seat 301 is used for the installation and positioning of the engine hood positioning pin 3. The second positioning seat 401 plays a positioning role for the positioning pin 4 on the first body. The positioning pin 7 on the second body is fixed with the positioning pin 4 on the first body by the same positioning structure. The L-shaped connecting member 13 fixes the first positioning seat 301 and the second positioning seat 401 under the connecting plate 11, and then the auxiliary clamping member 9 assists in clamping the connecting plate 11 and the body to ensure the stability of the positioning fixture body 12 and the body, and to ensure the accurate positioning of the engine hood. The first body positioning block 5, the second body positioning block 6 and the third body positioning block 8 support the engine hood on the body, and also perform positioning and supporting treatment on the engine hood to ensure the Z-direction positioning of the engine hood. The aluminum connecting plate 11 installs and fixes the positioning structure and plays a role in weight reduction, which is convenient for assemblers to operate the fixture, thereby completing a series of tasks.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A novel positioning fixture for improving the assembly accuracy of an automobile engine cover, comprising a positioning fixture body (12), characterized in that: The positioning fixture body (12) is provided with a connecting plate (11), and a connecting vertical plate (201) is connected to the top of the connecting plate (11), a reinforcing baffle (1) is connected to the upper end of the connecting vertical plate (201), and an engine cover nylon support block (2) is installed between the reinforcing baffles (1), an engine cover positioning pin (3) is also provided on one side above the connecting plate (11), and a first vehicle body positioning pin (4) and a second vehicle body positioning pin (7) are provided below the connecting plate (11), a first vehicle body positioning block (5), a second vehicle body positioning block (6) and a third vehicle body positioning block (8) are evenly spaced and fixed to the bottom of the connecting plate (11), and an auxiliary clamping member (9) is rotatably installed at the bottom of the connecting plate (11).
2. A new type of positioning fixture for improving the assembly accuracy of automobile engine cover according to claim 1, characterized in that: The engine cover nylon support blocks (2) are provided with two, and the upper end surfaces of the engine cover nylon support blocks (2) are both inclined, and the engine cover nylon support blocks (2) form an inclined surface, and the upper end surface of the engine cover nylon support blocks (2) is higher than the upper end surface of the reinforcing baffle (1).
3. According to claim 1, a new type of positioning fixture for improving the assembly accuracy of automobile engine cover is characterized by: The connecting vertical plate (201) and the connecting plate (11) are both made of aluminum, and through holes for weight reduction are respectively provided on the connecting vertical plate (201) and the connecting plate (11).
4. A new type of positioning fixture for improving the assembly accuracy of automobile engine cover according to claim 1, characterized in that: An engine cover installation positioning guide rod (10) is also installed on the side of the connecting vertical plate (201), and the engine cover installation positioning guide rod (10) is close to the high-end engine cover nylon support block (2).
5. According to claim 1, a new positioning fixture for improving the assembly accuracy of automobile engine cover is characterized by: An L-shaped connecting piece (13) is screwed and fixed above the connecting plate (11) at a position where the engine cover positioning pin (3) is fixed, and the L-shaped connecting piece (13) above the connecting plate (11) is screwed and fixed to a first positioning seat (301), and the engine cover positioning pin (3) passes through the end of the first positioning seat (301).
6. A new type of positioning fixture for improving the assembly accuracy of automobile engine cover according to claim 1, characterized in that: An L-shaped connecting piece (13) is also screwed and fixed at the position where the positioning pin (4) on the first body and the positioning pin (7) on the second body are installed below the connecting plate (11), and the L-shaped connecting piece (13) below the connecting plate (11) is screwed and fixed to a second positioning seat (401), and the positioning pin (4) on the first body is installed through the end of the second positioning seat (401).