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Integrated automobile wheel wrench forming method

A forming method and technology of automobile wheels, which are applied in the field of integral automobile wheel wrench forming, can solve problems such as cracking, deformation, and insufficient toughness of wheel wrenches, and achieve the effects of improving service life and increasing fracture toughness

Pending Publication Date: 2021-10-19
SUZHOU RUNYUAN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The torque value of the wheel hub screw is between 100-110 Nm. When temporarily removing and installing the wheel hub screw manually, the removal or installation of the wheel hub screw is generally achieved by stepping on or hitting a wrench with other hardness. The existing wheel wrench The sleeve will be deformed and cracked after a few times of use
The toughness of the wheel wrench is not enough. Apart from the reason of the wheel wrench material itself, most of it is caused by insufficient molding process parameters and mold settings. Therefore, the forming process of the wheel wrench needs to be further improved.

Method used

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  • Integrated automobile wheel wrench forming method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The tensile strength of No. 45 steel is 600MPa, the yield strength is 355MPa, the hot rolling hardness is 229HBS, and the annealing hardness is 197HBS. Because it contains less harmful impurities such as sulfur and phosphorus, the quality is higher, and its strength, plasticity and toughness are higher than those of carbon structural steel. Good, with good comprehensive mechanical properties, it is an ideal material for making automobile wheel wrenches.

[0026] The integrated automobile wheel wrench forming method, the automobile wheel wrench adopts No. 45 steel, and the forming method includes the following steps:

[0027] S1, using a cylindrical bar as the blank, blanking according to the designed length to obtain a piece of rough blank;

[0028] S2, carrying out the plane chamfering of the end face by turning the rough material provided in the step S1;

[0029] S3, put the blank that has passed the step of S2 into the mold of the forging machine vertically, the jaw...

Embodiment 2

[0045] The integral automobile wheel wrench forming method comprises the following steps:

[0046] S1, using a cylindrical bar as the blank, blanking according to the designed length to obtain a piece of rough blank;

[0047] S2, carrying out the plane chamfering of the end face by turning the rough material provided in the step S1;

[0048] S3, put the blank that has passed the step of S2 into the mold of the forging machine vertically, the jaw plate of the forging machine clamps the top-to-bottom third of the blank, and heats the blank close to the top by means of electric heating One part is heated to 820°C;

[0049] S4, the pier head of the forging machine goes down, and the mold forms an inner hexagonal hole on the top of the blank, and expands the hole diameter to the specified size;

[0050] S5, using air cooling to naturally cool the blank to 25°C;

[0051] S6, tempering the part from the top of the blank to the bending position, the tempering temperature is 650°C, ...

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Abstract

The invention discloses an integrated automobile wheel wrench forming method which comprises the thirteen steps in which the first step to the fourth step are as follows: S1, adopting a cylindrical bar as a blank material, and blanking according to the designed length to obtain a section of blank material; S2, carrying out plane chamfering on the end faces of the blank material provided in the step S1 through lathe processing; S3, vertically placing the blank material obtained in the step S2 in a die of a forging machine, a claw disc of the forging machine clamping the one-third position, from top to bottom, of the blank material, and heating the part, close to the top end, of the blank material to 800-850 DEG C in an electric heating mode; and S4, moving the pier head of the forging machine downwards, forming an inner hexagonal hole in the top end of the blank material by the means of the die, and enlarging the hole diameter to the specified size. When the head of the inner hexagonal sleeve is formed by hot forging, the temperature of a forging material is still much higher than the recrystallization temperature, grains grow for a long time, coarse grains can be obtained, the fracture toughness is improved, and the service life of the wheel wrench is prolonged.

Description

technical field [0001] The invention belongs to the technical field of automobile wheel wrench manufacturing, and relates to a forming method of an integrated automobile wheel wrench. Background technique [0002] Automobile wheel wrenches are indispensable in the car accessories, and most of them are put together with the car repair tools and placed in the trunk of the car. like figure 1 A car wheel wrench is shown, the wheel wrench has a bent handle 10, the head of the handle has an inner hexagon socket 20, the handle of the wheel wrench and the sleeve are integrated, the sleeve is formed by forging process, one of the handle A double-sided flat structure 30 and a square hole 40 are arranged in the straight rod. [0003] The torque value of the wheel hub screw is between 100-110 Nm. When temporarily removing and installing the wheel hub screw manually, the removal or installation of the wheel hub screw is generally achieved by stepping on or hitting a wrench with other h...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 周晓庆
Owner SUZHOU RUNYUAN AUTO PARTS
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