CN111421010A - Processing method and preparation technology of automobile steering column - Google Patents
Processing method and preparation technology of automobile steering column Download PDFInfo
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- CN111421010A CN111421010A CN202010246773.3A CN202010246773A CN111421010A CN 111421010 A CN111421010 A CN 111421010A CN 202010246773 A CN202010246773 A CN 202010246773A CN 111421010 A CN111421010 A CN 111421010A
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- blank
- steering column
- automobile steering
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- extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/04—Mandrels
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention provides a processing method and a preparation technology of an automobile steering column, and belongs to the technical field of machinery. The method solves the problems of high cost, complex processing procedures and low processing quality of the existing processing method for the automobile steering column. The method comprises the following steps: selecting a raw material as a hollow welding and drawing tube blank; cleaning the surface of the blank; degreasing the blank after surface cleaning treatment, and completely removing grease on the surface of the blank; after the steps are finished, cleaning the blank by using clear water, and then carrying out acid pickling by using acid liquor after the cleaning is finished; repeatedly washing the acid-washed blank by using clear water; after the steps are completed, carrying out phosphorization saponification treatment including phosphorization and saponification on the blank; after the above steps are completed, the blank after the phosphorization and saponification treatment is subjected to cold extrusion. The invention has the advantages of high strength of processed products, low processing cost, high processing efficiency, long service life of the processed products and good use effect.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a processing method and a preparation technology of an automobile steering column.
Background
In recent years, the development of an automobile steering column is remarkable, the safety of the automobile steering column is particularly important, the static compression characteristic of an assembly is required to be checked, and the requirement of the safety standard of the U.S. federal motor vehicle is also met, so that enterprises need to adopt advanced technology if the enterprises want to stand out in intense market competition.
The steering column consists of a stub shaft with an external spline and a stub shaft with an internal spline. The traditional processing method for the steering column is basically manufactured by a forging process, and the forging process has the following defects: the forging environment is in a high-temperature state, so that the external injury is easy to occur, and the cost is high. In addition, the steering column manufactured by forging seems to be integrally formed, but not always, a worker plates a layer of mill on the outer wall of the steering column manufactured by forging to enable people to generate visual illusion, so that the steering column which is not integrally formed causes the problem of low strength, meanwhile, the production efficiency of the forging processing technology is low, the steering column cannot adapt to mass production in the automobile industry, and secondly, the cost is high, and the processing procedure is complicated.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a processing method and a preparation technology of an automobile steering column, which have the advantages of good processing method, convenience in processing, accuracy in processing and low cost, and the processed mould has long service life.
The purpose of the invention can be realized by the following technical scheme: the processing method and the preparation technology of the automobile steering column are characterized by comprising the following steps:
a. selecting a raw material as a hollow welding and drawing tube blank;
b. cleaning the surface of the blank;
c. degreasing the blank after surface cleaning treatment, and completely removing grease on the surface of the blank;
d. after the steps are finished, cleaning the blank by using clear water, and then carrying out acid pickling by using acid liquor after the cleaning is finished;
e. repeatedly washing the acid-washed blank by using clear water;
f. after the steps are completed, carrying out phosphorization saponification treatment including phosphorization and saponification on the blank;
g. and after the steps are completed, performing cold extrusion on the blank subjected to the phosphorization and saponification treatment.
In the processing method and the preparation technology of the automobile steering column, the cold extrusion step is as follows:
a. selecting an oil press with a corresponding tool and a corresponding die according to the shape of the required blank, wherein the tool is provided with a mandrel;
b. fixedly mounting a hollow blank on a tool, wherein the mandrel penetrates through the blank;
c. the die is driven by an oil press to extrude towards the direction of a blank shaft head to obtain a blank after primary extrusion, the height of the blank after primary extrusion is prolonged, the pipe wall of the blank is thinned, and the outer diameter of the peripheral wall of the blank is reduced;
d. after the steps are completed, the oil press drives the die to extrude the blank shaft head after the first extrusion again to obtain a blank after the second extrusion, the height of the blank after the second extrusion is prolonged, the pipe wall of the blank is thinned, and the outer diameter of the peripheral wall of the blank is reduced;
e. after the steps are completed, the oil press drives the die to extrude the blank shaft head after the second extrusion again to obtain a blank after the third extrusion, the height of the blank after the third extrusion is prolonged, the pipe wall of the blank is thinned, and the outer diameter of the peripheral wall of the blank is reduced;
d. inspecting the specification of the blank after the third extrusion;
e. and turning the blank meeting the specification, and repeating the steps to finish the processing.
In the processing method and the preparation technology of the automobile steering column, the mandrel is provided with an external spline for forming the internal spline on the inner peripheral wall of the blank shaft tail, and the die is provided with an internal spline for forming the external spline on the outer peripheral wall of the blank shaft head.
In the processing method and the preparation technology of the automobile steering column, the degreasing temperature is between 80 and 90 ℃.
In the processing method and the preparation technology of the automobile steering column, the temperature of the phosphating treatment is between 70 and 80 ℃, and the temperature of the saponification treatment is between 75 and 85 ℃.
In the processing method and the preparation technology of the automobile steering column, the processed blank is provided with an outer ring A and an outer ring B, the circle run-out value of the outer ring A relative to the outer ring B is 0.15mm, and the straightness of the internal spline of the processed blank is within 0.02 mm.
In the processing method and the preparation technology of the automobile steering column, the clear water washing and the acid washing are both processed at normal temperature.
In the processing method and the preparation technology of the automobile steering column, the acid solution is concentrated sulfuric acid.
Compared with the prior art, the processing method and the preparation technology of the automobile steering column replace the traditional forging technology, the steering column is processed by a cold extrusion process, and the obtained steering column is integrally formed, wherein the cold extrusion has the following advantages:
1. the production efficiency is high, and the method is suitable for mass production in the automobile industry;
2. the cost is low, the material can be saved, and the machining procedures can be reduced;
3. the mechanical strength and hardness of the part can be improved by the work hardening generated by cold extrusion;
4. some special structures and shapes that cannot be achieved by machining can be achieved by cold extrusion.
In conclusion, the processing method and the preparation technology of the automobile steering column have the advantages of high strength of processed products, low processing cost, high processing efficiency, long service life of the processed products and good use effect.
Drawings
Fig. 1 is a schematic structural diagram of an oil press in the processing method and the preparation technology of the automobile steering column.
FIG. 2 is a schematic structural diagram of an initial blank in the present method and technique for manufacturing a steering column for an automobile.
Fig. 3 is a schematic structural diagram of a blank after primary processing in the processing method and the preparation technology of the automobile steering column.
Fig. 4 is a schematic structural diagram of a blank after processing in the processing method and the preparation technology of the automobile steering column.
In the figure, 1, blank; 2. an oil press; 3. a mandrel; 4. assembling; 5. a mold; 6. a shaft head; 7. a shaft tail; 8. an external spline; 9. an internal spline.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, 2 and 3, the processing method and the preparation technology of the automobile steering column comprise the following steps:
a. selecting a raw material as a hollow welding and drawing tube blank 1;
b. carrying out surface cleaning treatment on the blank 1;
c. degreasing the blank 1 after surface cleaning treatment, and completely removing grease on the surface of the blank 1;
d. after the steps are finished, cleaning the blank 1 by using clear water, and then carrying out acid pickling by using acid liquor after the cleaning is finished;
e. repeatedly washing the acid-washed blank 1 by clear water;
f. after the above steps are completed, the blank 1 is subjected to phosphorization and saponification treatments including phosphorization and saponification;
g. after the above steps are completed, the blank 1 after the saponification treatment is subjected to cold extrusion.
In the processing method and the preparation technology of the automobile steering column, the cold extrusion step is as follows:
a. selecting an oil press 2 correspondingly provided with a tool 4 and a die 5 according to the shape of the required blank 1, wherein the tool 4 is provided with a mandrel 3;
b. fixedly mounting a hollow blank 1 on a tool 4, and penetrating a mandrel 3 into the blank 1;
c. the oil press 2 drives the die 5 to extrude towards the shaft head 6 of the blank 1 to obtain the blank 1 after primary extrusion, the height of the blank 1 after primary extrusion is prolonged, the pipe wall of the blank 1 becomes thin, and the outer diameter of the peripheral wall of the blank 1 is reduced;
d. after the steps are completed, the oil press 2 drives the die 5 to extrude the shaft head 6 of the blank 1 after the first extrusion again to obtain a blank 1 after the second extrusion, the height of the blank 1 after the second extrusion is prolonged, the pipe wall of the blank 1 becomes thin, and the outer diameter of the peripheral wall is reduced;
e. after the steps are completed, the oil press 2 drives the die 5 to extrude the shaft head 6 of the blank 1 extruded for the second time again to obtain a blank 1 extruded for the third time, the height of the blank 1 extruded for the third time is prolonged, the pipe wall of the blank 1 becomes thin, and the outer diameter of the peripheral wall is reduced;
d. inspecting the specification of the blank 1 after the third extrusion;
e. and (5) turning over the blank 1 meeting the specification, and repeating the steps to finish the processing.
In further detail, the mandrel 3 is provided with an external spline 8 for forming an internal spline 9 on the inner peripheral wall of the shaft tail 7 of the blank 1, the die 5 is provided with an internal spline 9 for forming an external spline 8 on the outer peripheral wall of the shaft head 6 of the blank 1, in the process of extruding by the die 5, since the blank 1 of the metal material has ductility, the height of the blank 1 is extended, in addition, the pipe wall of the blank 1 in the extrusion process is reduced, the outer diameter of the peripheral wall is also reduced, the inner peripheral wall of the inwardly reduced blank 1 is abutted with the spline on the outer peripheral wall of the mandrel 3, and the outer peripheral wall of the inwardly reduced blank is abutted with the spline on the inner peripheral wall of the die 5, therefore, splines are formed on the inner and outer peripheral walls of the blank 1, the machined blank 1 is provided with an outer ring A and an outer ring B, the circular runout value of the outer ring A relative to the outer ring B is 0.15mm, and the straightness of the splines 9 in the machined blank 1 is within 0.02 mm.
In more detail, the temperature of degreasing treatment is between 80 ℃ and 90 ℃, 85 ℃ is the optimal temperature, the temperature of phosphating treatment is between 70 ℃ and 80 ℃, 75 ℃ is the optimal temperature, the temperature of saponification treatment is between 75 ℃ and 85 ℃, 80 ℃ is the optimal temperature, the saponification treatment of phosphorus consisting of phosphating and saponification has the lubricating effect, the washing with clear water and the pickling are both carried out at normal temperature, and the acid solution is concentrated sulfuric acid.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. The processing method and the preparation technology of the automobile steering column are characterized by comprising the following steps:
a. selecting a raw material as a hollow welding and drawing tube blank (1);
b. carrying out surface cleaning treatment on the blank (1);
c. degreasing the blank (1) after surface cleaning treatment, and completely removing grease on the surface of the blank (1);
d. after the steps are finished, cleaning the blank (1) by using clear water, and then carrying out acid pickling by using acid liquor after the cleaning is finished;
e. repeatedly washing the blank (1) after acid pickling by clear water;
f. after the above steps are completed, the blank (1) is subjected to phosphorization and saponification treatments including phosphorization and saponification;
g. after the above steps are completed, the blank (1) after the phosphorization and saponification treatment is subjected to cold extrusion.
2. The processing method and the preparation technology of the automobile steering column according to claim 1, characterized in that the cold extrusion step is as follows:
a. selecting an oil press (2) with a corresponding tool (4) and a corresponding die (5) according to the shape of the required blank (1), wherein the tool (4) is provided with a mandrel (3);
b. fixedly mounting a hollow blank (1) on a tool (4), wherein a mandrel (3) penetrates through the blank (1);
c. the die (5) is driven by the oil press (2) to extrude towards the shaft head (6) of the blank (1) to obtain the blank (1) after primary extrusion, the height of the blank (1) after primary extrusion is prolonged, the pipe wall of the blank (1) becomes thin, and the outer diameter of the peripheral wall of the blank is reduced;
d. after the steps are completed, the oil press (2) drives the die (5) to extrude the shaft head (6) of the blank (1) after the first extrusion again to obtain a blank (1) after the second extrusion, the height of the blank (1) after the second extrusion is prolonged, the pipe wall of the blank (1) is thinned, and the outer diameter of the peripheral wall of the blank is reduced;
e. after the steps are completed, the oil press (2) drives the die (5) to extrude the shaft head (6) of the blank (1) extruded for the second time again to obtain the blank (1) extruded for the third time, the height of the blank (1) extruded for the third time is prolonged, the pipe wall of the blank (1) is thinned, and the outer diameter of the peripheral wall of the blank is reduced;
d. inspecting the specification of the blank (1) after the third extrusion;
e. and (3) turning the blank (1) meeting the specification, and repeating the steps to finish the processing.
3. The machining method and the preparation technology of the automobile steering column according to the claim 1 are characterized in that the mandrel (3) is provided with an external spline (8) for forming an internal spline on the inner peripheral wall of the shaft tail (7) of the blank (1), and the die (5) is provided with an internal spline (9) for forming an external spline on the outer peripheral wall of the shaft head (6) of the blank (1).
4. The method for manufacturing an automobile steering column according to claim 1, wherein the degreasing temperature is between 80 ℃ and 90 ℃.
5. The method for processing an automobile steering column according to claim 1, wherein the temperature of the phosphating is 70 ℃ to 80 ℃ and the temperature of the saponification is 75 ℃ to 85 ℃.
6. The machining method and the preparation technology of the automobile steering column according to claim 1 are characterized in that the machined blank (1) is provided with an outer ring A and an outer ring B, the circle run-out value of the outer ring A relative to the outer ring B is 0.15mm, and the straightness of the internal spline (9) of the machined blank (1) is within 0.02 mm.
7. The processing method and the preparation technology of the automobile steering column according to claim 1, characterized in that the rinsing and the acid washing are both processed at normal temperature.
8. The method for processing and the technology for preparing the automobile steering column according to claim 1, wherein the acid solution is concentrated sulfuric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246773.3A CN111421010A (en) | 2020-03-31 | 2020-03-31 | Processing method and preparation technology of automobile steering column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246773.3A CN111421010A (en) | 2020-03-31 | 2020-03-31 | Processing method and preparation technology of automobile steering column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111421010A true CN111421010A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010246773.3A Pending CN111421010A (en) | 2020-03-31 | 2020-03-31 | Processing method and preparation technology of automobile steering column |
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| CN (1) | CN111421010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676528A (en) * | 2020-12-18 | 2021-04-20 | 河南红阳精工科技有限公司 | Water drop type shell double-head hot extrusion pipe material forming tool die and forming process |
| CN115283601A (en) * | 2022-09-30 | 2022-11-04 | 徐州长盛电力设备有限公司 | Cold extrusion device for transformer shell |
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| CA951678A (en) * | 1973-03-28 | 1974-07-23 | Joseph A. Simon | Process for forming a flared end tubular metal part |
| CN101394953A (en) * | 2006-03-02 | 2009-03-25 | 泰森克鲁普普里斯塔股份公司 | Method of producing a steering gear shaft part and stearing gear shaft having such a steering gear shaft part |
| US7765846B2 (en) * | 2005-09-13 | 2010-08-03 | Neumayer Tekfor Holding Gmbh | Method of producing a hollow shaft |
| CN102335810A (en) * | 2011-08-19 | 2012-02-01 | 江苏森威精锻有限公司 | Method for forming precise slender internal spline tube |
| CN103350346A (en) * | 2013-07-06 | 2013-10-16 | 江苏威鹰机械有限公司 | Power takeoff transmission shaft cold precision forging plastic forming process |
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| CN104416115A (en) * | 2013-08-22 | 2015-03-18 | 高屋股份有限公司 | Serration forming method of interm shaft for steering device of vehicle |
| CN104708277A (en) * | 2015-02-10 | 2015-06-17 | 四川绵阳三力股份有限公司 | Pipe end spline machining technology |
| KR20180029300A (en) * | 2016-09-12 | 2018-03-21 | (주) 호창엠에프 | Method for manufacturing long hollow type drive shaft through cold forging precess |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824665A (en) * | 1971-10-14 | 1974-07-23 | Nissan Motor | Apparatus for producing an assembly of a metal tubing and serrated rod |
| CA951678A (en) * | 1973-03-28 | 1974-07-23 | Joseph A. Simon | Process for forming a flared end tubular metal part |
| US7765846B2 (en) * | 2005-09-13 | 2010-08-03 | Neumayer Tekfor Holding Gmbh | Method of producing a hollow shaft |
| CN101394953A (en) * | 2006-03-02 | 2009-03-25 | 泰森克鲁普普里斯塔股份公司 | Method of producing a steering gear shaft part and stearing gear shaft having such a steering gear shaft part |
| CN102335810A (en) * | 2011-08-19 | 2012-02-01 | 江苏森威精锻有限公司 | Method for forming precise slender internal spline tube |
| CN103350346A (en) * | 2013-07-06 | 2013-10-16 | 江苏威鹰机械有限公司 | Power takeoff transmission shaft cold precision forging plastic forming process |
| CN104416115A (en) * | 2013-08-22 | 2015-03-18 | 高屋股份有限公司 | Serration forming method of interm shaft for steering device of vehicle |
| CN104131279A (en) * | 2014-07-18 | 2014-11-05 | 安徽铖友汽车零部件制造有限公司 | Phosphorus saponification treatment process for cold extrusion |
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| KR20180029300A (en) * | 2016-09-12 | 2018-03-21 | (주) 호창엠에프 | Method for manufacturing long hollow type drive shaft through cold forging precess |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676528A (en) * | 2020-12-18 | 2021-04-20 | 河南红阳精工科技有限公司 | Water drop type shell double-head hot extrusion pipe material forming tool die and forming process |
| CN115283601A (en) * | 2022-09-30 | 2022-11-04 | 徐州长盛电力设备有限公司 | Cold extrusion device for transformer shell |
| CN115283601B (en) * | 2022-09-30 | 2023-01-24 | 徐州长盛电力设备有限公司 | Cold extrusion device for transformer shell |
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Application publication date: 20200717 |