Technique for milling two end surfaces of front brake adjusting arm casting blank
A technology of end face milling and arm adjustment, which is applied in the direction of milling machine equipment, manufacturing tools, milling machine equipment details, etc., to achieve the effects of improving tensile strength, improving braking stability, and low cost
Inactive Publication Date: 2014-04-23
LIUZHOU ZHENGLING GROUP
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Problems solved by technology
[0003] Therefore, there are certain disadvantages in the processing of the castings of the front brake adjusting arm, especially in the milling method of milling the two end faces. Therefore, in view of the above aspects, it is necessary to make effective innovations
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] The two end face milling processes of the casting blank of the front brake adjusting arm according to the embodiment of the present invention mainly consist of the following steps:
[0013] (1) Roughly milling the two end faces of the two holes of φ65mm and φ15mm to ensure the size. The blank material is KT350, the hardness is less than 150HB, and the X53 vertical milling machine is used. The cutting tool is a high-speed steel insert three-sided edge milling cutter;
[0014] ⑵Set the cutting speed V=45m / min, the outer diameter of the milling cutter dw=225mm, the number of teeth Z=20, and the size requirement can be met by one milling;
[0015] ⑶ face grinding machine, drilling M10 threaded inner hole, based on the right end face and φ65mm hole end face, choose Z525 vertical drilling machine and special fixture for processing.
[0016] ⑷For rough milling and fine milling of the keyway, use the X53 vertical milling machine to tap the M10 threaded hole and the Rc1 / 8 hole.
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Abstract
The invention discloses a technique for milling two end surfaces of a front brake adjusting arm casting blank, which mainly comprises the following steps: (1) roughly milling two end surfaces of a fai 65mm hole and a fai 15mm hole, wherein the blank material is KT350 with the hardness of less than 150 HB, an X53 vertical miller is adopted, and the cutter is a high-speed steel inserted side milling cutter; (2) setting the cutting speed V at 45 m / minute, the external diameter of the milling cutter dw at 225mm and the number of teeth z at 20; (3) drilling an M10 threaded inner hole with a face grinding machine, and processing with a Z525 vertical drill and a special fixture by using the right end surface and the end surface of the fai 65mm hole as references; and (4) roughly milling, finely milling a keyslot by the X53 vertical miller, and tapping an M10 threaded hole. The casting produced by the method can enhance the braking stability, enhance the tensile strength and bear the vibration or impact, and is suitable for mass production, low in cost and convenient for improvement according to different automobile models.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a process for milling two end faces of a casting blank of a front brake adjusting arm. Background technique [0002] With the advancement of technology, the car's front brake adjustment arm shell is playing an increasingly important role. Its main function is to support and protect the front brake adjustment arm. Its center is a spline hole, and the outside is worm gear teeth. , There is a worm shaft on the side, a square on the head, for adjusting the brake, and a hole on the outermost side, where the pin is connected to the brake cylinder, and the hole and keyway cooperate with the shaft to transmit torque to adjust the brake. The castings are used to support and protect the front brake adjusting arm, and also transmit torque, so there are certain strength requirements for the parts, which should have a certain tensile strength and can withstand vibration or impact. If thes...
Claims
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Inventor 李敬明朱国诚孙广华边平
Owner LIUZHOU ZHENGLING GROUP