Automobile control arm machining tooling

Abstract

The utility model relates to a kind of automobile control arm machining tool, belong to automobile parts processing technical field, specifically a kind of automobile control arm machining tool, including base table, suspension mounting plate, suspension main shaft, limiting mechanism and stable telescopic component etc..Suspension main shaft is through automobile control arm body positioning upper hole and realizes suspension, limiting mechanism is further limited by lateral positioning pin and spring column cooperation, and the elastic limiting block of stable telescopic component is adaptively attached to control arm inner wall.In addition, quick-release butt joint component is convenient to disassemble and maintain, and L-shaped base table cooperates with magnetic collection box to realize impurity collection.The utility model is by each structure mutual cooperation, reaches to the effect of the stable fixing of automobile control arm multi-angle, quick disassembly and high-efficiency collection and processing impurity, solves the problem that existing tool is not fixed to automobile control arm, disassembly efficiency is low, and impurity is inconvenient to collect.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a tooling for processing automotive control arms. Background Technology

[0002] Automotive control arm machining fixtures are crucial equipment for ensuring the quality and efficiency of automotive control arm machining. As a key component of the automotive suspension system, the automotive control arm requires high-precision machining to ensure stable force transmission and precise control of wheel movement during vehicle operation.

[0003] A search revealed Chinese patent CN213053815U, which discloses a control arm machining positioning and clamping fixture. The control arm has end faces and a lightweight through hole in the middle. Its features include a chassis, a fixture housing, a clamping cylinder, a side-mounted cylinder, a support platform, and side baffles. This invention utilizes clamping cylinders, side-mounted cylinders, support platforms, and side baffles on all four sides of the fixture housing. While drilling is being performed on two sides of the control arm, end face milling can be performed on the other two sides. This combination of two processes on a single fixture improves the machining efficiency of the control arm. The patent also features opposing support platform units with stepped surfaces that cooperate with the clamping cylinders to ensure vertical clamping and limiting of the control arm. The side baffles and side-mounted cylinders ensure horizontal clamping and limiting of the control arm, guaranteeing overall machining accuracy.

[0004] Based on the above search results and existing technologies, the following findings were made:

[0005] Existing automotive control arm machining fixtures have significant shortcomings in their fixing methods. Many fixtures only provide partial positioning of the control arm, such as fixing only one end or providing support and positioning through a few points. Traditional fixtures, for example, simply place a few support blocks at the bottom of the control arm or provide simple suspension positioning at the top. With this structure, during machining operations, the control arm's complex structure and the various external forces such as cutting forces and vibrations cannot be effectively constrained in multiple directions using existing simple fixing methods. This makes the control arm prone to shaking or displacement during machining. Once the control arm shakes or shifts during machining, the relative position between the machining tool and the control arm changes, making it difficult to guarantee the originally set machining dimensions and accuracy. Ultimately, this severely affects the machining accuracy of the control arm, increasing the scrap rate and failing to meet the automotive manufacturing industry's demand for high-precision automotive control arms. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a machining fixture for an automotive control arm. By setting a positioning hole through which the suspension spindle passes through the control arm body, the control arm is suspended on a suspension mounting plate. Combined with the structural design of the positioning tube, moving tube, spring column, and lateral positioning pin in the limiting mechanism, the control arm body is stably fixed from multiple angles and in all directions. This effectively prevents the control arm body from shaking or shifting during machining, greatly ensuring machining accuracy and meeting the high-precision machining requirements of automotive control arms.

[0007] The technical solution to achieve the purpose of this utility model is: a car control arm processing fixture, including a base platform and a car control arm body set on the base platform. The top of the car control arm body has a positioning upper hole through the front and rear. The bottom sides of the car control arm body are provided with two sets of side docking holes. The front end of the base platform is provided with a suspension mounting plate. A quick-release docking assembly is detachably provided between the back of the suspension mounting plate and the front side of the base platform.

[0008] The suspension main shaft is fixedly connected to the suspension mounting plate. The suspension main shaft passes through the positioning hole of the vehicle control arm body and is suspended on the suspension mounting plate.

[0009] A limiting mechanism is provided at the bottom front end of the suspension mounting plate;

[0010] The limiting mechanism includes a positioning tube located inside the body of the vehicle control arm, and a movable tube that slides up and down at the bottom of the positioning tube. A spring column is fixed inside the positioning tube. The upper end of the movable tube extends into the interior of the positioning tube and is connected to the spring column. The lower end of the movable tube extends downward to the bottom of the suspension mounting plate. Lateral positioning pins are symmetrically arranged on both sides of the bottom of the movable tube. The lateral positioning pins are used to insert into the side docking holes on the body of the vehicle control arm.

[0011] Multiple sets of stabilizing telescopic components are symmetrically arranged on both sides of the positioning tube. The stabilizing telescopic components extend to abut against the corresponding inner wall surface of the vehicle control arm body.

[0012] In some embodiments, the quick-release docking assembly includes a docking block fixed to the back of the suspension mounting plate and a suspension hook fixed to the front end of the base platform. The suspension hook and the docking block engage vertically. The top end face of the suspension hook is provided with a mounting screw hole. The top of the docking block is threaded with a fixing bolt extending into the corresponding mounting screw hole.

[0013] In some embodiments, the base platform adopts an L-shaped structure, and the bottom upper end of the base platform is provided with a collection groove corresponding to the upper and lower parts of the vehicle control arm body, and a collection box is provided on the collection groove.

[0014] In some embodiments, the collection box is specifically a magnetic basin that magnetically attaches with the base.

[0015] In some embodiments, each of the stable telescopic components includes a telescopic rod connected to the outside of the positioning tube. The telescopic end of the telescopic rod has a movable notch, and an elastic limiting block is movably disposed inside the movable notch via a rotating shaft.

[0016] In some embodiments, each of the elastic limiting blocks is a T-shaped structure, and anti-slip grooves are provided on the sides of the elastic limiting blocks.

[0017] Compared with existing technologies, the significant advantages of this invention are:

[0018] Firstly, this invention suspends the vehicle control arm onto a mounting plate by setting a suspension spindle that passes through a positioning hole in the main body of the control arm. Combined with the structural design of the positioning tube, moving tube, spring column, and lateral positioning pin in the limiting mechanism, pulling down the moving tube allows the lateral positioning pin to insert into the side docking hole of the vehicle control arm body. The elastic force of the spring column further limits the vertical and horizontal positioning of the vehicle control arm body. Simultaneously, multiple sets of stabilizing telescopic components are symmetrically arranged on both sides of the positioning tube. The elastic limiting blocks movably mounted at the telescopic ends of the telescopic rods automatically adjust their angle to fit and abut against the curvature of the inner wall of the vehicle control arm body. These structures work together to achieve multi-angle, all-around stable fixation of the vehicle control arm body, effectively preventing shaking or displacement during processing, greatly ensuring processing accuracy, and meeting the high-precision processing requirements of vehicle control arms.

[0019] Secondly, this utility model adopts a quick-release docking assembly, where the docking block fixed to the back of the suspension mounting plate and the suspension hook fixed to the front end of the base platform engage vertically, and then are connected by a fixing bolt and a threaded connection to the mounting screw hole, realizing the detachable connection of the vehicle control arm body to the front end of the base platform. This design allows for quick disassembly of the suspension mounting plate and the vehicle control arm body when the tooling malfunctions or requires cleaning and maintenance. Compared with the complex disassembly process of traditional tooling, this greatly improves the efficiency of disassembly and maintenance, and reduces maintenance costs and time costs.

[0020] Thirdly, this utility model designs the base platform as an L-shaped structure, with a collection groove at the upper bottom corresponding to the upper and lower parts of the car control arm body, and a magnetic collection box using magnetic adsorption. During the processing of the car control arm body, debris, waste, and other impurities will fall into the collection box in the collection groove under gravity. The magnetic attraction between the magnetic collection box and the base platform keeps it firmly in place, preventing it from shifting or falling due to vibration, and it can be easily removed for cleaning. This design effectively solves the problems of existing processing fixtures where impurities are easily scattered during processing, collection is inconvenient, and the collection device is unstable, maintaining a clean working environment and facilitating the unified cleaning of impurities. Attached Figure Description

[0021] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a three-dimensional structural diagram of the front mounting of the automotive control arm machining fixture provided in one embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the automobile control arm body and the limiting mechanism provided in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the disassembled body of the automobile control arm on the suspension mounting plate in one embodiment of the present invention;

[0025] Figure 4 This is a partial three-dimensional structural diagram of the limiting mechanism provided in one embodiment of the present invention;

[0026] Figure 5 This is an exploded view of the automotive control arm machining fixture provided in one embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the stable telescopic component provided in one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Base platform; 101. Collection trough; 102. Suspension hook; 103. Mounting screw hole; 104. Collection box; 200. Suspension mounting plate; 201. Suspension spindle; 203. Docking block; 204. Fixing bolt; 300. Car control arm body; 301. Positioning upper hole; 302. Side docking hole; 400. Positioning tube; 401. Moving tube; 402. Spring column; 403. Lateral positioning pin; 500. Telescopic rod; 501. Elastic limit block; 503. Movable notch; 504. Anti-slip groove. Detailed Implementation

[0030] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0031] This utility model provides an improved machining fixture for automotive control arms. The technical solution of this utility model is as follows:

[0032] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-6 The present invention will be further described below.

[0033] like Figures 1-6 As shown, a machining fixture for an automotive control arm includes a base platform 100 and an automotive control arm body 300 on the base platform 100. The top of the automotive control arm body 300 has a positioning upper hole 301 extending through it front to back, and two sets of side docking holes 302 are laterally formed on both sides of the bottom of the automotive control arm body 300. A suspension mounting plate 200 is provided at the front end of the base platform 100. A quick-release docking assembly is detachably provided between the back of the suspension mounting plate 200 and the front side of the base platform 100. The fixture also includes a suspension spindle 201, a limiting mechanism, and multiple sets of stabilizing telescopic components. The suspension spindle 201 is fixedly connected to the suspension mounting plate 200 and passes through the positioning upper hole 301 of the automotive control arm body 300, thereby suspending the automotive control arm body 300 on the suspension mounting plate 200. The limiting mechanism is located at the bottom front end of the suspension mounting plate 200. Multiple sets of stabilizing telescopic components are symmetrically arranged on both sides of the positioning tube 400, and the stabilizing telescopic components extend to abut against the corresponding inner wall surface of the automotive control arm body 300.

[0034] like Figure 1 , Figure 2 , Figure 5 As shown, in one embodiment, the quick-release docking assembly includes a docking block 203 fixed to the back of the suspension mounting plate 200 and a suspension hook 102 fixed to the front end of the base platform 100 for engaging with the docking block 203. The top end face of the suspension hook 102 has a mounting screw hole 103, and the top of the docking block 203 is threadedly connected to a fixing bolt 204 extending into the corresponding mounting screw hole 103. Through the engagement of the docking block 203 and the suspension hook 102, the suspension mounting plate 200 can be quickly and initially positioned at the front end of the base platform 100. The fixing bolt 204 is then threadedly connected to the mounting screw hole 103 to further secure their positions. This quick-release docking assembly allows the vehicle control arm body 300 to be detachably connected to the front end of the base platform 100. In case of tooling failure or the need for cleaning and maintenance, the suspension mounting plate 200 and the vehicle control arm body 300 can be quickly disassembled, facilitating disassembly and maintenance operations.

[0035] like Figure 1 , Figure 5As shown, in one embodiment, the base platform 100 adopts an L-shaped structure, and a collection groove 101 corresponding vertically to the vehicle control arm body 300 is provided at the upper bottom of the base platform 100. A collection box 104 is provided on the collection groove 101. During the processing of the vehicle control arm body 300, debris, waste residue, and other impurities will fall off under gravity. Since the collection groove 101 corresponds vertically to the vehicle control arm body 300, the impurities can fall directly into the collection box 104 inside the collection groove 101. This structural design effectively collects impurities generated during processing, preventing impurities from scattering on the work site, maintaining a clean working environment, and facilitating subsequent unified cleaning of impurities.

[0036] like Figure 1 , Figure 5 As shown, in one embodiment, the collection box 104 is specifically a magnetic basin that magnetically adheres to the base 100. Because the collection box 104 is a magnetic basin, there is a magnetic attraction between it and the base 100, ensuring that the collection box 104 is stably placed within the collection groove 101 and will not easily shift or fall off due to vibration or other factors during processing. Furthermore, when cleaning the collection box 104 is required, it can be easily removed by overcoming the magnetic attraction, achieving both stability during installation and ease of disassembly.

[0037] like Figures 2-4 As shown, in one embodiment, the limiting mechanism includes a positioning tube 400 located inside the vehicle control arm body 300, and a movable tube 401 that slides up and down at the bottom of the positioning tube 400. A spring column 402 is fixed inside the positioning tube 400. The upper end of the movable tube 401 extends into the positioning tube 400 and is connected to the spring column 402. The lower end of the movable tube 401 extends downward to below the suspension mounting plate 200. Lateral positioning pins 403 are symmetrically arranged on both sides of the bottom of the movable tube 401. The lateral positioning pins 403 are used to insert into the side docking holes 302 of the vehicle control arm body 300. After the vehicle control arm body 300 is suspended on the suspension mounting plate 200 via the suspension spindle 201, the moving tube 401 is pulled down to align and insert the lateral positioning pin 403 into the side docking hole 302 of the vehicle control arm body 300. At this time, the spring column 402 is in a compressed state. Under the elastic force of the spring column 402, the lateral positioning pin 403 is tightly inserted into the side docking hole 302, which further limits the vehicle control arm body 300 in the vertical and horizontal directions, preventing the vehicle control arm body 300 from shaking or shifting during processing and ensuring processing accuracy.

[0038] like Figure 1 , Figure 4 , Figure 5 as well as Figure 6As shown, in one embodiment, each set of stable telescopic components includes a telescopic rod 500 connected to the outside of the positioning tube 400. The telescopic end of the telescopic rod 500 has a movable notch 503, and an elastic limiting block 501 is movably disposed inside the movable notch 503 via a rotating shaft. Since the elastic limiting block 501 is movably disposed at the telescopic end of the telescopic rod 500 via a rotating shaft, when the telescopic rod 500 extends and abuts against the inner wall of the vehicle control arm body 300, regardless of the curvature of the corresponding contact surface on the inner side of the vehicle control arm body 300, the elastic limiting block 501 can adjust its angle by rotating around the rotating shaft within the movable notch 503, thereby achieving a close abutment against the inner wall of the vehicle control arm body 300. This avoids uneven contact surfaces between the telescopic end of the telescopic rod 500 and the inner side of the vehicle control arm body 300, which could lead to instability when the telescopic rod 500 abuts against the inner side of the vehicle control arm body 300, further improving the stability of the vehicle control arm body 300 during processing.

[0039] like Figure 6 As shown, in one embodiment, each elastic limiting block 501 is a T-shaped structure, and each elastic limiting block 501 has an anti-slip groove 504 on its side. When the elastic limiting block 501 abuts against the inner wall of the vehicle control arm body 300 for temporary limiting, the T-shaped elastic limiting block 501 can provide a larger contact area, enhancing the contact stability with the vehicle control arm body 300. At the same time, the anti-slip groove 504 on the side of the elastic limiting block 501 increases the friction between it and the inner wall of the vehicle control arm body 300. Even if the vehicle control arm body 300 is subjected to external force during processing, the elastic limiting block 501 is not easy to slide, thereby achieving a better anti-slip effect and further ensuring the stability of the vehicle control arm body 300 during processing.

[0040] The working principle and usage process of this utility model are as follows: First, the docking block 203 of the suspension mounting plate 200 is engaged with the suspension hook 102 at the front end of the base platform 100 to initially fix the suspension mounting plate 200 to the front end of the base platform 100. Then, the fixing bolt 204 is threaded into the mounting screw hole 103 at the top of the suspension hook 102 to complete the stable connection between the suspension mounting plate 200 and the base platform 100. Next, the positioning hole 301 of the vehicle control arm body 300 is aligned with the suspension main shaft 201 on the suspension mounting plate 200, so that the vehicle control arm body 300 is suspended on the suspension mounting plate 200. Afterward, the moving tube 401 is pulled down so that the lateral positioning pins 403 on both sides of the bottom of the moving tube 401 are inserted into the lateral docking holes 302 on both sides of the bottom of the vehicle control arm body 300. The elastic force of the spring column 402 is used to further limit the vehicle control arm body 300 in the vertical and horizontal directions. Next, adjust the stabilizing telescopic components on both sides of the positioning tube 400 to extend the telescopic rod 500. The elastic limiting block 501 at the telescopic end of the telescopic rod 500 abuts against the corresponding inner wall surface of the vehicle control arm body 300. The elastic limiting block 501 will automatically adjust the angle to fit according to the curvature of the inner wall surface of the vehicle control arm body 300. At the same time, the anti-slip groove 504 on the elastic limiting block 501 increases the friction, further stabilizing the vehicle control arm body 300. At this time, the vehicle control arm body 300 is firmly installed on the machining fixture, and machining operations can begin. Impurities generated during machining will fall into the collection box 104 in the collection groove 101 of the base platform 100. After machining is completed, first retract the telescopic rod 500, then push the moving tube 401 upward to pull the lateral positioning pin 403 out of the side docking hole 302, and then remove the vehicle control arm body 300 from the suspension spindle 201. Finally, if maintenance or cleaning of the tooling is required, the fixing bolt 204 can be unscrewed, and the suspension mounting plate 200 can be removed from the base platform 100 for subsequent operations.

[0041] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A machining fixture for an automotive control arm, comprising a base platform (100) and an automotive control arm body (300) disposed on the base platform (100), wherein the top of the automotive control arm body (300) has a positioning upper hole (301) extending through it front to back, and two sets of side docking holes (302) are laterally formed on both sides of the bottom of the automotive control arm body (300), characterized in that: The front end of the base platform (100) is provided with a suspension mounting plate (200), and a quick-release docking assembly is detachably provided between the back of the suspension mounting plate (200) and the front side of the base platform (100), and also includes; The suspension main shaft (201) is fixedly connected to the suspension mounting plate (200). The suspension main shaft (201) passes through the positioning upper hole (301) of the vehicle control arm body (300) and is suspended on the suspension mounting plate (200). A limiting mechanism is provided at the bottom front end of the suspension mounting plate (200); The limiting mechanism includes a positioning tube (400) located inside the vehicle control arm body (300) and a moving tube (401) that slides up and down at the bottom of the positioning tube (400). A spring column (402) is fixed inside the positioning tube (400). The upper end of the moving tube (401) extends into the positioning tube (400) and is connected to the spring column (402). The lower end of the moving tube (401) extends downward to the bottom of the suspension mounting plate (200). Lateral positioning pins (403) are symmetrically arranged on both sides of the bottom of the moving tube (401). The lateral positioning pins (403) are used to insert into the side docking holes (302) on the vehicle control arm body (300). Multiple sets of stabilizing telescopic components are symmetrically arranged on both sides of the positioning tube (400). The stabilizing telescopic components extend to abut against the corresponding inner wall surface of the vehicle control arm body (300).

2. The machining fixture for an automotive control arm according to claim 1, characterized in that: The quick-release docking assembly includes a docking block (203) fixed to the back of the suspension mounting plate (200) and a suspension hook (102) fixed to the front end of the base platform (100). The suspension hook (102) and the docking block (203) engage vertically. The top end face of the suspension hook (102) is provided with a mounting screw hole (103). The top of the docking block (203) is threaded with a fixing bolt (204) extending into the corresponding mounting screw hole (103).

3. The automotive control arm machining fixture according to claim 1, characterized in that: The base platform (100) adopts an L-shaped structure, and a collection groove (101) corresponding to the upper and lower parts of the bottom of the base platform (100) is provided, which is in line with the upper and lower parts of the vehicle control arm body (300). A collection box (104) is provided on the collection groove (101).

4. The machining fixture for an automotive control arm according to claim 3, characterized in that: The collection box (104) is specifically a magnetic basin that forms a magnetic adsorption relationship with the base (100).

5. A machining fixture for an automotive control arm according to any one of claims 1-4, characterized in that: Each of the aforementioned stable telescopic components includes a telescopic rod (500) connected to the outside of the positioning tube (400). The telescopic end of the telescopic rod (500) has a movable notch (503), and an elastic limiting block (501) is movably arranged inside the movable notch (503) via a rotating shaft.

6. The machining fixture for an automotive control arm according to claim 5, characterized in that: Each of the elastic limiting blocks (501) has a T-shaped structure, and anti-slip grooves (504) are provided on the side of each elastic limiting block (501).

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