CN103406728A - Method for manufacturing hub bearings of automobiles - Google Patents

Abstract

The invention discloses a method for manufacturing hub bearings of automobiles. The method has the advantages that the hub bearings applicable to various automobiles are manufactured from raw materials via steps of heating, cutting, forging and pressing, punching, reaming, primary machining and accurate grinding, and the raw materials are heated and then are cut, so that load on a cut-off machine is relieved, the service life of the cut-off machine is prolonged, and the work efficiency is improved; two channels are simultaneously machined in a reaming procedure, so that the precision of the center distance of the two channels is guaranteed, and the production efficiency is further improved.

Description

A kind of preparation method of automobile hub bearing

Technical field

The present invention relates to a kind of preparation method of automobile hub bearing.

Background technology

Along with improving constantly of economic condition, automobile has become product indispensable in national economy and daily life, in order to guarantee the security of these modal vehicles, automobile hub bearing is as one of vitals of automobile, when its production and check, must be rigid in checking up, meanwhile also should improve its production efficiency to adapt to the widespread demand in market.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of method for preparing efficiently automobile hub bearing.

A kind of preparation method of automobile hub bearing, preparation process is as follows:

1), heating: the bearing steel column is delivered to heating cabinet by conveyer belt, is heated to 1050-1080 ℃ and makes steel column softening;

2), cut off: the steel column after softening is sent to cutting machine, and cutting machine is cut into one by one little steel column;

3), forging and stamping: each little steel column is clipped on forging press and forges and presses, make little steel column forge into the round iron cake;

4), punching: each round iron cake is clipped on perforating press and carries out punching, go out a circular hole in round iron cake central authorities;

5), reaming: the round iron ring after punching is clipped on staving press and carries out reaming again, make the round iron ring reach the size of producing required hub bearing;

6), preliminary working: the hub bearing blank formed after reaming is cooling, now by its tempering and carry out preliminary working, comprises sandblast and dephosphorization;

7), fine grinding: the hub bearing blank after preliminary working is carried out to normalizing, fine grinding, make its surface flatness reach the automobile Application standard.

Adopt above-mentioned preparation method, mainly solve following problem.

1, in traditional preparation method, directly raw material bearing steel column is cut into to a section little steel column, can complete this task although be equipped with the cutting machine of high-quality cutting knife, cutting machine is limited service life, often needs to change cutting knife, affects production efficiency.In the mould use procedure, produce wearing and tearing, make forge weight change, and realize that the steel column cut can't adjust satisfiedly, more mold exchange, lose time.

In the present invention, first the bearing steel column is heated to 1050-1080 ℃, steel at this temperature is softening easily to cut off, and otch is more smooth, and weight that aborning can the free adjustment blanking, when die wear is serious, just mold exchange more, saved the production continuous operating time greatly, improved production efficiency.

2, in traditional preparation method, two of hub bearing outer rings raceway groove is independently to process respectively.

In the present invention, be by the processing of the round iron ring reaming after punching, in the reaming process, two raceway grooves processed simultaneously, guaranteed the precision of two raceway groove centre-to-centre spacing.

The accompanying drawing explanation

Fig. 1 is the preparation flow figure of automobile hub bearing of the present invention.

The specific embodiment

The present invention will be further described in detail below in conjunction with accompanying drawing.

A kind of preparation method of automobile hub bearing, is characterized in that, preparation process is as follows:

1, heating: the bearing steel column is delivered to heating cabinet by conveyer belt, is heated to 1050-1080 ℃ and makes steel column softening, make steel column be easier to cut off, thereby extend the cutting machine life-span; 2, cut off: the steel column after softening is sent to cutting machine, and cutting machine is cut into one by one little steel column, and otch is comparatively smooth, has reduced the time of post-production; 3, forging and stamping: each little steel column is clipped on forging press and forges and presses, make little steel column forge into the round iron cake; 4, punching: each round iron cake is clipped on perforating press and carries out punching, go out a circular hole in round iron cake central authorities; 5, reaming: the round iron ring after punching is clipped on staving press and carries out reaming again, make the round iron ring reach the size of producing required hub bearing, in the reaming process, two raceway grooves are processed simultaneously, guaranteed the precision of two raceway groove centre-to-centre spacing; 6, preliminary working: the hub bearing blank formed after reaming is cooling, now by its tempering and carry out preliminary working, comprises sandblast and dephosphorization; 7, fine grinding: the hub bearing blank after preliminary working is carried out to normalizing, fine grinding, make its surface flatness reach the automobile Application standard.

Claims (1)

1. the preparation method of an automobile hub bearing, is characterized in that, preparation process is as follows:

1), heating: the bearing steel column is delivered to the intermediate frequency heating case by conveyer belt, is heated to 1050-1080 ℃ and makes steel column softening;

2), cut off: the steel column after softening is sent to cutting machine, and cutting machine is cut into one by one little steel column;

3), forging and stamping: each little steel column is clipped on forging press and forges and presses, make little steel column forge into the round iron cake;

4), punching: each round iron cake is clipped on perforating press and carries out punching, go out a circular hole in round iron cake central authorities;

5), reaming: the round iron ring after punching is clipped on staving press and carries out reaming again, make the round iron ring reach the size of producing required hub bearing;

6), preliminary working: the hub bearing blank formed after reaming is cooling, now by its tempering and carry out preliminary working, comprises sandblast and dephosphorization;

7), fine grinding: the hub bearing blank after preliminary working is carried out to normalizing, fine grinding, make its surface flatness reach the automobile Application standard.

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