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CN-122008752-A - High-strength and high-toughness aluminum alloy material automobile control arm

CN122008752ACN 122008752 ACN122008752 ACN 122008752ACN-122008752-A

Abstract

The invention discloses a high-strength and high-toughness aluminum alloy material automobile control arm, which relates to the technical field of automobile accessories and comprises an automobile control arm body, wherein the top end and the bottom end of the control arm body are respectively provided with a hollowed-out part, the top end of each hollowed-out part is provided with a light-weight hole penetrating to the bottom end of each hollowed-out part, the control arm body is in an A shape, one end of the control arm body is connected with two groups of connecting sleeves, the other end of the control arm body is provided with a ball pin, and the interior of the ball pin is provided with a connecting shaft. According to the invention, the ball pin is arranged, when the vehicle runs on a bumpy road surface, uneven impact on the road surface acts on the wheels at first, after the primary shock absorption of the suspension system, part of pressure is transmitted to the connecting shaft, and at the moment, the elastic deformation and rolling friction characteristics of the ball pin start to play a role, so that the vibration amplitude felt by a driver and passengers is obviously reduced, and the running process is smoother and more comfortable.

Inventors

  • PAN HAIBIN
  • PAN QIJUN
  • PAN KELIN

Assignees

  • 芜湖禾田汽车工业有限公司

Dates

Publication Date
20260512
Application Date
20251226

Claims (10)

  1. 1. A high-strength and toughness aluminum alloy material automobile control arm comprises an automobile control arm (100) and is characterized in that the automobile control arm (100) comprises a control arm main body (110), hollowed-out parts (120) are respectively arranged at the top end and the bottom end of the control arm main body (110), light holes (130) penetrating through the bottom end of the hollowed-out parts (120) are formed in the top end of the hollowed-out parts, the control arm main body (110) is in an A shape, one end of the control arm main body (110) is connected with two groups of connecting sleeves (140), a ball pin (200) is arranged at the other end of the control arm main body (110), and a connecting shaft (300) is arranged in the ball pin (200).
  2. 2. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 1, wherein the control arm main body (110) comprises, by weight, 3.4% -26.1% of silicon, 2% -15% of magnesium, 0.6% -1.2% of lanthanum, 6.4% -14.8% of copper, 13.2% -19.3% of titanium, 8.8% -10.7% of chromium, 1% -12.6% of cerium, 6% -18.9% of strontium and the balance of high-purity aluminum ingots.
  3. 3. The high-strength and toughness aluminum alloy material automobile control arm according to claim 1, wherein the ball pin (200) comprises a ball pin shell (210) fixedly connected with the inner wall of the control arm main body (110), the ball pin shell (210) is internally hollow, a limiting piece (220) is arranged in the ball pin shell (210), an axial abdication piece (250) is arranged below the limiting piece (220), a serial piece (230) is arranged in the axial abdication piece (250), a binding ring (240) is arranged in the serial piece (230) in an outward extending mode, a wear-resistant roll (260) is arranged at the position, which is attached to the inner wall of the ball pin shell (210), of the lower portion of the wear-resistant roll (260), a buffer roll (270) is arranged at the position, which is attached to the inner wall of the ball pin shell (210), of the lower end of the serial piece (230) is connected with the buffer cover (280).
  4. 4. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 3, wherein the inner wall of the ball pin shell (210) is provided with an installation groove matched with the limiting piece (220), the inner wall of the ball pin shell (210) is provided with a first yielding groove below the installation groove, the first yielding groove is matched with the wear-resistant roll (260), the inner wall of the ball pin shell (210) is provided with a second yielding groove below the first yielding groove, and the second yielding groove is matched with the buffer roll (270).
  5. 5. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 4, wherein the top end of the ball pin shell (210) is provided with limit grooves extending to the bottom end of the ball pin shell, the limit grooves are matched with the outer wall of the axial abdication piece (250), the number of the limit grooves is eight groups, and the eight groups of limit grooves are distributed along the circumferential array at the top of the ball pin shell (210).
  6. 6. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 4, wherein the limiting piece (220) comprises an arc limiting plate (221) clamped with the mounting groove, limiting sleeves (222) are assembled at the bottom ends of the arc limiting plate (221), the number of the limiting sleeves (222) is eight, the eight limiting sleeves (222) are assembled coaxially with the top ends of the axial abdication pieces (250), rectangular abdication grooves are formed in the bottom ends of the limiting sleeves (222), and the rectangular abdication grooves are matched with the constraint rings (240).
  7. 7. The high-strength and toughness aluminum alloy material automobile control arm according to claim 3, wherein the serial component (230) comprises a spring rope (231) attached to the inside of the axial abdication component (250), a top ball (232) is assembled at the top end of the spring rope (231), a limit ball (233) is arranged at the bottom end of the spring rope (231), through holes penetrating through two sides of the top ball (232) are formed in the outer wall of the top ball (232), and the through holes are matched with the outer wall of the constraint ring (240).
  8. 8. The high-strength and toughness aluminum alloy material automobile control arm according to claim 3, wherein the axial yielding piece (250) comprises a contact shaft (251) jointed with the outer wall of the serial piece (230), a wear-resistant shaft (252) is arranged below the contact shaft (251) along the extending direction of the serial piece (230), a buffer shaft (253) is arranged below the wear-resistant shaft (252) along the extending direction of the serial piece (230), the bottom end of the contact shaft (251) is jointed with the top end of the outer wall of the wear-resistant roll (260), the top end of the wear-resistant shaft (252) is jointed with the bottom end of the outer wall of the wear-resistant roll (260), the bottom end of the wear-resistant shaft (252) is jointed with the top end of the outer wall of the buffer roll (270), and the top end of the buffer shaft (253) is jointed with the bottom end of the outer wall of the buffer roll (270).
  9. 9. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 7, wherein the inside of the buffer cover (280) is hollow, the buffer cover (280) is made of metal elastic materials, a limiting hole penetrating into the inside of the buffer cover (280) is formed in the outer wall of the buffer cover (280), and the limiting hole is matched with the limiting ball (233).
  10. 10. The high-strength and high-toughness aluminum alloy material automobile control arm according to claim 7, wherein through holes penetrating through the bottom ends of the wear-resistant coil (260) and the buffer coil (270) are formed in the top ends of the wear-resistant coil (260) and the buffer coil (270), the through holes are matched with the spring ropes (231), and the wear-resistant coil (260) and the buffer coil (270) are made of soft elastic materials.

Description

High-strength and high-toughness aluminum alloy material automobile control arm Technical Field The invention relates to the technical field of automobile parts, in particular to an automobile control arm made of high-strength and high-toughness aluminum alloy materials. Background The control arm is a core component of an automobile suspension system, is made of high-strength steel, aluminum alloy and other materials, mainly plays a role of connecting a wheel knuckle with a frame, transmits longitudinal, transverse and vertical forces in the running process of a vehicle, and ensures that wheels move according to a preset track. The structure form of the automobile comprises a plurality of types such as an A shape, an L shape, a wishbone shape and the like, and the automobile is hinged with a rubber or engineering plastic bushing through a precisely machined bolt hole. The modern control arm design generally adopts topology optimization and composite material technology, for example, the carbon fiber multi-region layering structure can reduce the mass by 37.1% compared with the traditional steel component, meanwhile, the excellent rigidity and fatigue strength are maintained, the aluminum alloy extrusion casting technology can reduce the weight of the component by 25%, the mechanical property reaches the standard, and the dual requirements of automobile weight reduction and safety are met. The existing automobile control arm is arranged at the bottom of an automobile, bump phenomenon can be avoided in the running process of the automobile, for example, when the automobile runs on a hollow road, passes through a deceleration strip or runs on a rugged mountain road, the pressure born by the control arm can be greatly increased, repeated impact and vibration can not only lead the control arm to generate fatigue cracks, but also accelerate the aging of the internal structure of the control arm, and the service life of the automobile control arm is influenced. In order to increase the service life of the automobile control arm, a common treatment method is to increase the toughness and thickness of the raw material of the automobile control arm, for example, a higher-strength steel material is adopted or a special heat treatment process is performed on the existing material, but this also means an increase in cost, because the purchase price of the high-strength material is higher, the processing difficulty is increased, the production cost is increased, and the improvement of the product performance is not facilitated for an automobile manufacturer while the cost is controlled. Disclosure of Invention Based on the above, the invention aims to provide a high-strength and high-toughness aluminum alloy material automobile control arm so as to solve the technical problems in the background. In order to achieve the purpose, the technical scheme is that the automobile control arm made of the high-strength and toughness aluminum alloy material comprises an automobile control arm body, wherein hollowed-out parts are respectively arranged at the top end and the bottom end of the control arm body, light-weight holes penetrating through the hollowed-out parts to the bottom end of the hollowed-out parts are formed in the top end of the hollowed-out parts, the control arm body is in an A shape, one end of the control arm body is connected with two groups of connecting sleeves, a ball pin is arranged at the other end of the control arm body, and a connecting shaft is arranged in the ball pin. According to the preferable technical scheme, the control arm main body comprises, by weight, 3.4% -26.1% of silicon, 2% -15% of magnesium, 0.6% -1.2% of lanthanum, 6.4% -14.8% of copper, 13.2% -19.3% of titanium, 8.8% -10.7% of chromium, 1% -12.6% of cerium, 6% -18.9% of strontium and the balance of high-purity aluminum ingot. As the preferred technical scheme, the ball round pin is including the ball round pin casing with control arm main part inner wall fixed connection, the inside cavity setting of ball round pin casing, ball round pin casing inside is equipped with the locating part, the below of locating part is installed the axial and is yielded the piece, the inside that the axial was yielded the piece is equipped with the series connection spare, the inside of series connection spare outwards extends and is provided with the constraint ring, the below laminating of constraint ring is equipped with wear-resisting roll in ball round pin casing inner wall position department, the below laminating of wear-resisting roll is equipped with the buffering roll in ball round pin casing inner wall position department, the bottom of series connection spare is connected with the buffer cap. As the preferred technical scheme, the mounting groove matched with the limiting piece is formed in the inner wall of the ball pin shell, a first abdication groove is formed in the position, below the mounting groove, of the inner wall of the ball pin sh