A machining and positioning device for aluminum alloy automotive control arms

Abstract

This invention relates to the field of automotive parts machining fixture technology, specifically an aluminum alloy automotive control arm machining positioning device. It includes a fixture main board with independent front and rear main board working surfaces. Each working surface is equipped with a horizontal positioning component and a vertical positioning component. The horizontal positioning component achieves automatic horizontal positioning through a side positioning block, a side push block, and a side push drive cylinder. The vertical positioning component includes a main support block and an auxiliary support block driven by a lifting cylinder. A rotary clamping cylinder drives a pressure plate to achieve automatic vertical positioning. The main board has two independent pneumatic branches equipped with pressure reducing valves. A gas detection hole connected to a gas detection system is opened on the working end face of the pressure plate. This device features multi-point staggered support to suppress deformation of the aluminum alloy workpiece, and a double-sided workstation to improve clamping and machining efficiency. It has the advantages of automatic positioning and strong versatility, making it suitable for automated batch machining of automotive control arms.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts machining fixtures, and in particular to a positioning device for machining aluminum alloy automotive control arms. Background Technology

[0002] In automated machining production, machining fixtures are core components that ensure workpiece positioning accuracy, clamping reliability, and machining consistency, directly affecting product processing quality and production efficiency.

[0003] With the continuous development of automotive lightweighting technology, automotive control arms, due to their advantages of light weight and high specific strength, are gradually replacing traditional steel control arms and becoming the mainstream component of passenger car suspension systems. However, aluminum alloys have low elastic modulus and poor rigidity, and conventional fixtures have only one support point. The clamping force can easily cause workpiece deformation, resulting in non-compliance with dimensional and positional tolerances. At the same time, automotive parts production is trending towards multi-specification and fast changeover models. Traditional fixtures are only suitable for a single type of workpiece, have poor versatility, and manual positioning and clamping are time-consuming and have large fluctuations in positioning accuracy, making it difficult to meet the requirements of automated mass production. Existing fixtures have obvious defects and urgently need to be optimized and improved.

[0004] Therefore, it is essential to provide an aluminum alloy automotive control arm machining and positioning device to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a machining positioning device for aluminum alloy automotive control arms to overcome the shortcomings of the prior art. This utility model addresses the defects of existing technologies, such as easy deformation during machining of aluminum alloy control arms, poor fixture versatility, and low positioning efficiency. It achieves automatic and precise positioning by relying on double-sided independent working surfaces, multi-point pneumatic support, and a graded clamping structure, thereby suppressing deformation of the automotive control arm body. It is compatible with various automotive control arm body specifications and is suitable for automated batch processing.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] A machining positioning device for an aluminum alloy automotive control arm is provided, comprising an automotive control arm body and a fixture main board. The fixture main board is divided into two main board working surfaces, a front and a back. A horizontal positioning component and a vertical positioning component are installed on each main board working surface to movably abut against the automotive control arm body.

[0008] Each horizontal positioning component includes several side positioning blocks and side push blocks. The side positioning blocks are fixedly installed on the main board working surface. A side push block is provided on each main board working surface opposite to the side positioning block. Each side push block is fixedly installed on the output end of the side push drive cylinder. The side push drive cylinder is installed on the main board working surface. The side push drive cylinder drives the side push block to feed horizontally toward the side positioning block. Several protective posts are provided on the outer edge of the vehicle control arm body. The protective posts are installed on the main board working surface.

[0009] Each vertical positioning component includes several main support blocks and auxiliary support blocks. The main support blocks and auxiliary support blocks are fixedly installed on the main working surface of the main board. The main support blocks are distributed along the main force points on the same side of the vehicle control arm body. The auxiliary support blocks are interspersed between the main support blocks along the edge of the vehicle control arm body, forming an interlaced support layout in cooperation with the main force points. Each auxiliary support block is fixedly installed on the output end of the lifting cylinder. The lifting cylinder is installed on the main working surface of the main board. Several clamping plates are movably abutted against the side of the vehicle control arm body that is backed by the main support blocks. The clamping plates are fixedly installed on the output end of the rotary clamping cylinder. Each rotary clamping cylinder is installed on the main working surface of the main board.

[0010] Pressure reducing valves are installed on both working surfaces of the main board. Each pressure reducing valve is connected to a pneumatic drive branch. The two pneumatic drive branches are independently located inside the main board of the clamp. Air detection holes are opened on the working end face of the clamping plate. Each air detection hole is connected to the air detection control system through the air detection pipeline inside the rotary clamping cylinder.

[0011] Furthermore, the side positioning block, side push block, main support block, auxiliary support block, and clamping plate in each main board working surface are adapted to two different specifications of automotive control arm bodies.

[0012] Furthermore, without the vehicle control arm body in place, the lifting cylinder drives the auxiliary support block to retract, and the working end face of the auxiliary support block is lower than the working end face of the main support block. After the vehicle control arm body is positioned by the side push block, the lifting cylinder drives the auxiliary support block to rise until it abuts against the vehicle control arm body.

[0013] Furthermore, a fixing plate is installed on one side of the fixture main board. The fixing plate mounts the fixture main board to the machine tool worktable via a rotary motor. Several workpiece unloading ports are opened through the fixture main board, and the workpiece unloading ports are opened through the processing area of ​​the automobile control arm body on the working surface of the main board.

[0014] Furthermore, the side-push drive cylinder, the rotary clamping cylinder, and the lifting cylinder are each independently connected to their respective pneumatic drive branches.

[0015] Furthermore, the lifting cylinder is installed at an angle according to the contour of the vehicle control arm body.

[0016] This utility model fixture motherboard has two independent motherboard working surfaces, one on the front and one on the back, which can clamp and process the body of the car control arm. The two workstations do not interfere with each other, which greatly improves the utilization rate of the machine tool and is suitable for continuous automated production.

[0017] The horizontal positioning component uses a side-push drive cylinder to automatically press the side-push block against the car control arm body, eliminating the need for manual calibration. It features high positioning consistency and fast clamping speed. The vertical positioning component uses a main support block combined with a pneumatic lifting auxiliary support block to form a multi-point support structure, dispersing the clamping stress of the aluminum alloy car control arm body and effectively avoiding the problem of deformation of thin-walled aluminum alloy parts under pressure.

[0018] The clamping plate and the edge limiting structure of the car control arm body are clamped in stages, which takes into account the rigid clamping of the main load-bearing point and the auxiliary fixation of the edge. The clamping is stable and will not damage the surface of the car control arm body. The dual independent pneumatic branches are equipped with pressure reducing valves to stabilize the pressure. Each cylinder is independently controlled. The rotary clamping cylinder is equipped with a pneumatic detection pipeline and pneumatic detection system, which can detect whether the car control arm body is in place in real time, reducing the defect rate of missing parts and improper clamping.

[0019] It can be adapted to two specifications of control arms, the fixture is highly versatile, and the workpiece unloading port facilitates the unloading of waste materials when machining the car control arm body. The fixed plate and rotary motor can drive the fixture to rotate as a whole, adapting to the machining of different car control arm bodies. Attached Figure Description

[0020] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0021] Figure 1 This is a three-dimensional view of the overall structure of a main board working surface of an aluminum alloy automotive control arm machining and positioning device of this utility model, which is equipped with an automotive control arm body.

[0022] Figure 2 This is a top view of the overall structure of a main board working surface of an aluminum alloy automotive control arm machining and positioning device of this utility model, which is equipped with an automotive control arm body.

[0023] Figure 3 This is a three-dimensional view of the overall structure of a main board working surface of an aluminum alloy automotive control arm machining and positioning device without the automotive control arm body being assembled.

[0024] Figure 4 This is a top view of the overall structure of a main board working surface of an aluminum alloy automotive control arm machining and positioning device without the automotive control arm body assembled.

[0025] Figure 5 This is a three-dimensional view of the overall structure of the aluminum alloy automotive control arm machining and positioning device of this utility model, which is equipped with another main board working surface of the automotive control arm body.

[0026] Figure 6 This is a top view of the overall structure of the aluminum alloy automotive control arm machining and positioning device of this utility model, which is equipped with another main board working surface of the automotive control arm body.

[0027] Figure 7 This is a three-dimensional view of the overall structure of another main board working surface of the aluminum alloy automotive control arm machining and positioning device of this utility model, before the automotive control arm body is assembled.

[0028] Figure 8 This is a top view of the overall structure of another main board working surface of the aluminum alloy automotive control arm machining and positioning device of this utility model, before the automotive control arm body is assembled.

[0029] Figure 9 This is a side view of the overall structure of a single-sided assembly of an aluminum alloy automotive control arm machining and positioning device of this utility model, which is an automotive control arm body.

[0030] Figure 10 This is a side view of the overall structure of an aluminum alloy automotive control arm machining and positioning device of this utility model, which is equipped with an automotive control arm body on both sides.

[0031] from Figures 1 to 10 Including: 1. Vehicle control arm body; 2. Fixture mainboard; 3. Motherboard working surface; 4. Horizontal positioning component; 5. Vertical positioning component; 6. Side positioning block; 7. Side push block; 8. Side-push drive cylinder; 9. Protective pillars; 10. Main support block; 11. Auxiliary support block; 12. Lifting cylinder; 13. Pressure plate; 14. Rotary clamping cylinder; 15. Pressure reducing valve; 16. Air inspection port; 17. Fixing plate; 18. Part blanking port. Detailed Implementation

[0032] The present invention will be further described in conjunction with the following embodiments.

[0033] Example 1.

[0034] like Figure 1-10As shown, an aluminum alloy automotive control arm machining positioning device includes an automotive control arm body 1 and a clamping main board 2. The clamping main board 2 is divided into two independent main board working surfaces 3, one front and one back. The two main board working surfaces 3 have completely identical structures and can independently complete the clamping and machining of the automotive control arm body 1.

[0035] Each main board working surface 3 is equipped with a horizontal positioning component 4 and a vertical positioning component 5. The horizontal positioning component 4 includes a side positioning block 6, a side push block 7, and a side push drive cylinder 8. The side positioning block 6 is fixedly installed on the main board working surface 3. The side push drive cylinder 8 drives the side push block 7 to feed horizontally, so that the car control arm body 1 abuts against the side positioning block 6 to achieve automatic horizontal positioning. The protective column 9 is used to protect the outer side of the aluminum alloy car control arm body 1 to avoid accidental damage by the machining tool.

[0036] like Figure 1-10 As shown, the vertical positioning assembly 5 includes a main support block 10, an auxiliary support block 11, a lifting cylinder 12, a clamping plate 13, and a rotary clamping cylinder 14. The main support block 10 is distributed along the main load-bearing points of the vehicle control arm body 1. The auxiliary support block 11 is installed at the output end of the lifting cylinder 12. The lifting cylinder 12 is set with an installation tilt angle according to the contour of the vehicle control arm body 1.

[0037] During machining and positioning, the lifting cylinder 12 pushes the auxiliary support block 11 to press the outer edge of the car control arm body, and together with the main support block 10, they form a multi-point isobaric support and positioning structure. The rotary clamping cylinder 14 drives the clamping plate 13 to press down and clamp the support points of the car control arm body 1, completing the vertical automatic positioning of the car control arm body 1, and cooperating with the horizontal positioning component 4 to fix the car control arm body 1 in multiple directions.

[0038] The rotary clamping cylinder 14 equipped with the pressure plate 13 can simultaneously complete the telescopic clamping and positioning of the car control arm body 1 during the rotation action. It can be adapted to machining equipment to realize the rapid loading and unloading of the car control arm body 1. This structure belongs to the existing conventional technology and will not be described in detail here.

[0039] A pressure reducing valve 15 is installed on the side of the clamp main board 2. The clamp main board 2 has two independent pneumatic drive branches. The side push drive cylinder 8, the rotary clamping cylinder 14, and the lifting cylinder 12 belong to different pneumatic branches and are independently controlled. A gas detection hole 16 is opened on the working end face of the clamping plate 13. The gas detection hole 16 is connected to the external gas detection control system through an internal pipeline to monitor the contact status of the car control arm body 1 in real time, and link the control system of this device to regulate the pneumatic equipment to complete the automated clamping operation.

[0040] A fixing plate 17 is fixed on one side of the main fixture 2. The fixing plate 17 is connected to a rotary motor and installed on the machine tool worktable. Multiple workpiece unloading ports 18 are opened through the main fixture 2. The workpiece unloading ports 18 are opened through the processing area of ​​the car control arm body 1 on the working surface 3 of the main fixture, which facilitates the unloading of processing waste. All side positioning blocks 6, side push blocks 7, main support blocks 10, auxiliary support blocks 11 and clamping plates 13 of this device can be replaced with corresponding specifications and sizes according to the outer contour of different models of car control arm bodies 1, so as to adapt to various specifications of car control arm bodies 1.

[0041] The processing flow of this device is as follows: the aluminum alloy car control arm body 1 is placed on the main board working surface 3, the side push drive cylinder 8 drives the side push block 7 to advance, and the car control arm body 1 is pressed against the side positioning block 6 to complete the horizontal positioning. The lifting cylinder 12 is started, the auxiliary support block 11 rises to support the bottom of the car control arm body 1, the rotary clamping cylinder 14 drives the pressure plate 13 to press down the car control arm body 1 to complete the vertical positioning, and then cooperates with the horizontal positioning component 4 to complete the multi-directional clamping. After the air detection system detects that the car control arm body 1 is in place through the air detection hole 16, the machine tool starts processing.

[0042] After processing, each cylinder is reset in sequence. The lifting cylinder 12 drives the auxiliary support block 11 to move backward, and its support end face is lower than the support surface of the main support block 10. The car control arm body 1 can then be removed. The entire process is automated, which effectively suppresses the deformation of the aluminum alloy car control arm body 1 and improves the accuracy and efficiency of batch processing.

[0043] The rotary motor can drive the main board working surface 3 to flip and change direction. By switching the front and back working surfaces 3, it can adapt to clamping two different specifications of car control arm body 1, eliminating the need for fixture disassembly and replacement. It can continuously clamp and process two specifications of car control arm body 1, improving processing continuity and production efficiency.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A machining and positioning device for an aluminum alloy automotive control arm, comprising an automotive control arm body and a fixture main board, characterized in that: The clamp main board is divided into two main board working surfaces, one positive and one negative. A horizontal positioning component and a vertical positioning component are installed on each main board working surface to movably abut against the car control arm body. Each of the horizontal positioning components includes several side positioning blocks and side push blocks. The side positioning blocks are fixedly installed on the main board working surface. A side push block is provided in each of the main board working surfaces relative to the side positioning blocks. Each side push block is fixedly installed on the output end of a side push drive cylinder. The side push drive cylinder is installed on the main board working surface. The side push drive cylinder drives the side push block to feed horizontally toward the side positioning blocks. Several protective posts are provided on the outer edge of the vehicle control arm body. The protective posts are installed on the main board working surface. Each vertical positioning component includes several main support blocks and auxiliary support blocks. The main support blocks and auxiliary support blocks are fixedly installed on the main board working surface. The main support blocks are distributed along the main force points on the same side of the vehicle control arm body. The auxiliary support blocks are interspersed between the main support blocks along the edge of the vehicle control arm body. Each auxiliary support block is fixedly installed on the output end of the lifting cylinder. The lifting cylinder is installed on the main board working surface. Several clamping plates are movably abutted against the side of the vehicle control arm body that is backed by the main support blocks. The clamping plates are fixedly installed on the output end of the rotary clamping cylinder. Each rotary clamping cylinder is installed on the main board working surface. Pressure reducing valves are installed on both working surfaces of the main board. Each pressure reducing valve is connected to a pneumatic drive branch. The two pneumatic drive branches are independently located inside the main board of the clamp. A gas detection hole is opened on the working end face of the rotary clamping cylinder facing the clamping plate. Each gas detection hole is connected to the gas detection control system through a gas detection pipeline inside the rotary clamping cylinder.

2. The aluminum alloy automotive control arm machining positioning device according to claim 1, characterized in that: When the vehicle control arm body is not in place, the lifting cylinder drives the auxiliary support block to retract. The working end face of the auxiliary support block is lower than the working end face of the main support block. After the vehicle control arm body is positioned by the side push block, the lifting cylinder drives the auxiliary support block to rise until it abuts against the vehicle control arm body.

3. The aluminum alloy automotive control arm machining positioning device according to claim 2, characterized in that: A fixing plate is installed on one side of the fixture main board, and the fixture main board is installed on the machine tool worktable through the fixing plate. Several workpiece unloading ports are opened through the fixture main board, and the workpiece unloading ports are opened through the processing area of ​​the automobile control arm body on the working surface of the main board.

4. The aluminum alloy automotive control arm machining positioning device according to claim 3, characterized in that: The side-push drive cylinder, the rotary clamping cylinder, and the lifting cylinder are each independently connected to the corresponding pneumatic drive branch.

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