CN103753128A - Process of milling holes in two sides of automobile load rear steel plate spring flying ring - Google Patents

Abstract

The invention discloses a process of milling holes in two sides of an automobile load rear steel plate spring flying ring. The process of milling the holes in two sides of the automobile load rear steel plate spring flying ring is mainly composed of following steps: (1) firstly, milling the inner side face of a 30mm hole and the outer side face of the 30mm hole in sequence; (2) secondly, drilling and expanding a 10.5mm hole in sequence, and drilling, expanding, and reaming the 30mm hole in sequence, and cutting edges of the holes to obtain chamfers of 1*45 degrees; (3) finally, milling an opening groove which is 6mm in width, milling end faces of two 70mm outer circles, sequentially drilling, expanding and reaming a 39mm hole, and cutting edges of the hole to obtain a chamfer of 1*45 degrees. The process of milling the holes in two sides of the automobile load rear steel plate spring flying ring has the advantages of guaranteeing accuracy of a processed work piece, promoting a clamp to have beneficial effects on processing quality, production rate and product cost, prolonging use life of components, and being suitable for mass production, and conveniently modified according to different vehicle models.

Description

The inside and outside two side holes technique of a kind of carload rear spring suspension ring milling

Technical field

The present invention relates to automobile technical field, relate in particular to the inside and outside two side holes technique of a kind of carload rear spring suspension ring milling.

Background technology

Along with developing rapidly of mechanical industry, the kind of product and productivity ratio have been proposed to more and more high requirement, make many kinds, middle small serial production as the main flow of machinery production, for adapting to this development trend of machinery production, must higher requirement be proposed to jig, especially as the processing of truck rear spring suspension ring class irregular part also in falling behind the stage.In evolution from now on, should vigorously promote the use built-up jig, half built-up jig, flexible jig.Machine tool technology at a high speed, under the drive of efficient, accurate, compound, intelligent, environmental protection future development, clamp technology is just towards the general economic future development of high-precision high-efficiency module combination, after the Main Function of truck rear spring suspension ring is load-carrying, make steel plate can access extension, stretch, can have normal cushioning effect.Therefore, its crudy can affect operating accuracy, serviceability and the life-span of automobile.

From analyzing above, the main finished surface of this part is plane and hole system.In general, the machining accuracy that guarantees plane is than guaranteeing that the machining accuracy that hole is is easy; Therefore,, for this part, the subject matter in process is to guarantee the dimensional accuracy of plane and the dimensional accuracy in hole and positional precision, handles the correlation between hole and plane well.The processing of such part should be followed the principle of first face metapore: i.e. the datum plane of first processing parts, and with other planes of datum plane location processing, and then machining hole system.Because the area of plane is large, by plane positioning, can guarantee to locate reliable grip firm, thereby easily guarantee the machining accuracy in hole; Secondly, first processing plane can first cut the uneven of cast(ing) surface, for improving the machining accuracy in hole, creates conditions, and is convenient to tool setting and adjustment, is also conducive to protect cutter.

The processing technology of truck rear spring suspension ring part should be followed the principle that thick fine finishining separates, the processing of hole and plane is divided into roughing and fine finishining stage to guarantee that hole is machining accuracy, and it is also the major consideration in process that suspension ring productivity ratio requires.

Thereby for the processing of carload rear spring suspension ring part, particularly medial surface and the lateral surface for hole milling is that main process exists certain drawback, therefore, for above aspect, need to make effective innovation.

Summary of the invention

The object of this invention is to provide a kind of precision of guaranteeing processing work, can promote fixture to crudy and productivity ratio and product cost all possess favorable influence, can extend assembly service life, two side holes technique inside and outside the carload rear spring suspension ring milling that is applicable to producing in enormous quantities, being 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:

The inside and outside two side holes technique of carload rear spring suspension ring milling, is mainly comprised of following steps:

(1) first, carry out successively the medial surface in milling 30mm hole, the lateral surface in milling 30mm hole;

(2) secondly, bore successively, expand 10.5mm hole, bore, expand, cut with scissors 30mm hole, 1 * 45 ° of chamfering;

(3) the open slot last, milling width is 6mm, milling 70mm two circle end faces, bore, expand, cut with scissors 39mm hole successively, 1 * 45 ° of chamfering.

The beneficial effect of the inside and outside two side holes technique of carload rear spring suspension ring of the present invention milling is:

By the method can guarantee processing work precision, can promote fixture all to possess favorable influence, can extend assembly service life, be applicable to producing in enormous quantities, being convenient to improve according to different automobile types crudy and productivity ratio and product cost.

The specific embodiment

The inside and outside two side holes technique of carload rear spring suspension ring milling described in the embodiment of the present invention,

Mainly by following steps, formed:

(1) first, carry out successively the medial surface in milling 30mm hole, the lateral surface in milling 30mm hole;

(2) secondly, bore successively, expand 10.5mm hole, bore, expand, cut with scissors 30mm hole, 1 * 45 ° of chamfering;

(3) the open slot last, milling width is 6mm, milling 70mm two circle end faces, bore, expand, cut with scissors 39mm hole successively, 1 * 45 ° of chamfering.

Claims (1)

1. the inside and outside two side holes technique of carload rear spring suspension ring milling, is characterized in that, mainly following steps, consists of:

(1) first, carry out successively the medial surface in milling 30mm hole, the lateral surface in milling 30mm hole;

(2) secondly, bore successively, expand 10.5mm hole, bore, expand, cut with scissors 30mm hole, 1 * 45 ° of chamfering;

(3) the open slot last, milling width is 6mm, milling 70mm two circle end faces, bore, expand, cut with scissors 39mm hole successively, 1 * 45 ° of chamfering.