CN103769803A - Roughly milling method of two end faces of outer contour of front brake adjusting arm casting - Google Patents

Abstract

The invention discloses a roughly milling method of the two end faces of the outer contour of a front brake adjusting arm casting. The roughly milling method mainly includes the following steps: (1) roughly and accurately milling the two end faces of a phi62 mm hole and the two end faces of a phi12 mm hole; (2) sequentially drilling, reaming and accurately reaming the phi62 mm hole and the phi12 mm hole, and then drilling a phi4.3 mm hole; (3) then roughly milling the end faces of a phi14.5 mm hole and the end faces of a phi14 mm hole, and then drilling and reaming a phi13.8 mm hole, a phi13mm hole and a phi16 mm hole; (4) finishing the R11 end face, enabling a bench worker to remove burrs and carry out chamfering, and drilling an M10 threaded inner hole; (5) finally, roughly milling and accurately milling a spline groove. The roughly milling method has the advantages that by means of the casting produced with the method, the braking stability degree can be improved, the tensile strength can be improved, vibration or impact can be borne, and the casting can be suitable for mass production, can be low in cost and can be conveniently improved according to different automobile types.

Description

A kind of front brake is adjusted the rough milling method of two end faces of arm foundry goods outline

Technical field

The present invention relates to automobile technical field, relate in particular to the rough milling method of two end faces of a kind of front brake adjustment arm foundry goods outline.

Background technology

Along with the progress of technology; the front brake of automobile is adjusted arm shell and is being brought into play more and more important effect; its Main Function is front brake to be adjusted to arm support and protect, and Ta center is a splined hole, and outside is worm-gear toothing; there is a worm shaft side; on head, have a four directions, adjust brake use, outermost has a hole; dress pin connects wheel cylinder, and hole and keyway and axle coordinate transmitting torque to reach the effect of adjusting brake.Foundry goods is wherein for supporting and protection front brake adjustment arm; also carry-over moment of while, therefore has some strength requirement to part, should possess certain tensile strength and can bear vibrations or impact; if these foundry goods are produced in enormous quantities, need lower cost.

Thereby, adjust the processing of arm foundry goods for front brake, particularly easily guarantee the positional precision between finished surface for the processing method of acted as reference mutual, but because left end face area is little, when casting, may also can have defect, cause Area of bearing inadequate, workpiece location is unstable, clamps the problems such as unreliable, therefore, for above aspect, need to make effective innovation.

Summary of the invention

The object of this invention is to provide a kind of rough milling method that improves the degree of stability of braking, can improve tensile strength, can bear two end faces of front brake adjustment arm foundry goods outline that vibrate or impact, are applicable to production in enormous quantities, are convenient to improve according to different automobile types, to solve many deficiencies of prior art.

Object of the present invention is carried out specific implementation by the following technical programs:

Front brake is adjusted a rough milling method for two end faces of arm foundry goods outline, is mainly made up of following steps:

(1) first, rough mill two end faces in finish-milling φ 62mm hole, φ 12mm bis-holes;

(2) bore successively, expand, essence expands φ 62mm hole, φ 12mm, then bores φ 4.3mm hole;

(3) then, rough mill the end face in φ 14.5mm hole and φ 14mm hole; Bore again, expand φ 13.8mm hole, φ 13mm hole, φ 16mm hole;

(4) repair R11 end face, pincers worker deburring, chamfering, bores M10 threaded interior hole;

(5) last, to rough mill, finish-milling keyway, attacks M10 screwed hole, attacks Rc1/8 hole.

The beneficial effect that front brake of the present invention is adjusted the rough milling method of two end faces of arm foundry goods outline is: the foundry goods of producing by the method can improve brake degree of stability, can improve tensile strength, can bear vibration or impact, be applicable to producing in enormous quantities, cost is lower, is convenient to improve according to different automobile types.

The specific embodiment

Described in the embodiment of the present invention, front brake is adjusted the rough milling method of two end faces of arm foundry goods outline, is mainly made up of following steps:

(1) first, rough mill two end faces in finish-milling φ 62mm hole, φ 12mm bis-holes;

(2) bore successively, expand, essence expands φ 62mm hole, φ 12mm, then bores φ 4.3mm hole;

(3) then, rough mill the end face in φ 14.5mm hole and φ 14mm hole; Bore again, expand φ 13.8mm hole, φ 13mm hole, φ 16mm hole;

(4) repair R11 end face, pincers worker deburring, chamfering, bores M10 threaded interior hole;

(5) last, to rough mill, finish-milling keyway, attacks M10 screwed hole, attacks Rc1/8 hole.

Claims (1)

1. front brake is adjusted a rough milling method for two end faces of arm foundry goods outline, it is characterized in that, is mainly made up of following steps:

(1) first, rough mill two end faces in finish-milling φ 62mm hole, φ 12mm bis-holes;

(2) bore successively, expand, essence expands φ 62mm hole, φ 12mm, then bores φ 4.3mm hole;

(3) then, rough mill the end face in φ 14.5mm hole and φ 14mm hole; Bore again, expand φ 13.8mm hole, φ 13mm hole, φ 16mm hole;

(4) repair R11 end face, pincers worker deburring, chamfering, bores M10 threaded interior hole;

(5) last, to rough mill, finish-milling keyway, attacks M10 screwed hole, attacks Rc1/8 hole.