CN109080695B - Recirculating ball diverter housing and method of making same - Google Patents
Recirculating ball diverter housing and method of making same Download PDFInfo
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- CN109080695B CN109080695B CN201811063995.0A CN201811063995A CN109080695B CN 109080695 B CN109080695 B CN 109080695B CN 201811063995 A CN201811063995 A CN 201811063995A CN 109080695 B CN109080695 B CN 109080695B
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- blank
- welding
- welding groove
- cavity
- recirculating ball
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/02—Power-assisted or power-driven steering mechanical, e.g. using a power-take-off mechanism for taking power from a rotating shaft of the vehicle and applying it to the steering gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Forging (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a recirculating ball steering gear shell and a manufacturing method thereof, wherein the recirculating ball steering gear shell is a hollow shell, the hollow part consists of a first cavity and a second cavity, the first cavity is communicated with the second cavity, the shell comprises a first blank and a second blank, the first blank is provided with a first welding groove, the second blank is provided with a second welding groove, and the first blank and the second blank are matched through the first welding groove and the second welding groove to form a welding line; the first blank and the second blank are both forged blanks, and the first blank and the second blank are halved along the axis of the first cavity; the manufacturing method comprises the steps of forging a blank, processing a welding groove, welding and heat treatment. The invention can greatly reduce the weight of the parts, reduce the waste of resources and reduce the production cost.
Description
Technical Field
The present invention relates to a recirculating ball steering gear, and more particularly, to a recirculating ball steering gear housing and a method of manufacturing the same.
Background
At present, the shell of the recirculating ball steering gear is generally cast by ductile cast iron due to the special structure. Because the strength and hardness of the nodular cast iron material are much lower than those of the quenched and tempered alloy steel, the volume of the part needs to be increased in order to ensure that the part has enough strength during design, so that the weight of the part is very high, and the production cost is increased. Therefore, the parts manufactured by the current process technology waste a large amount of metal materials, have low utilization rate of resources and need further improvement.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a recirculating ball steering gear shell and a manufacturing method thereof, and by adopting an innovative process technology, the weight of parts is greatly reduced, and the production cost is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is that the recirculating ball steering gear shell is a hollow shell, the hollow part consists of a first chamber and a second chamber, the first chamber is communicated with the second chamber, the shell comprises a first blank and a second blank, the first blank is provided with a first welding groove, the second blank is provided with a second welding groove, and the first blank and the second blank are matched through the first welding groove and the second welding groove to form a welding line; the first blank and the second blank are both forged blanks, and the first blank and the second blank are bisected along the axis of the first cavity. The first blank is provided with two first welding grooves which are respectively positioned on the upper and lower surfaces to be welded of the first blank; similarly, the second blank also has two second welding grooves respectively located on the upper and lower two end faces to be welded of the second blank.
In an embodiment of the present invention, the axes of the first chamber and the second chamber are perpendicular to each other.
In an embodiment of the invention, the first blank is provided with a first reinforcing strip, the second blank is correspondingly provided with a second reinforcing strip, and the first reinforcing strip and the second reinforcing strip are matched.
In an embodiment of the present invention, the first reinforcing band and the second reinforcing band protrude from an outer surface of the case.
In an embodiment of the present invention, the inclination angles of the first welding groove and the second welding groove are 30 to 50 °.
In an embodiment of the invention, the first blank and the second blank are low-carbon alloy steel, and the carbon content is 0.05-0.20%.
A method of manufacturing a recirculating ball diverter housing, comprising the steps of:
forging a blank: forging a first blank and a second blank;
processing a welding groove: respectively processing a first welding groove and a second welding groove on the first blank and the second blank;
welding: welding the first blank and the second blank together into a whole;
and (3) heat treatment: and carrying out heat treatment on the welded whole.
In one embodiment of the invention, the first blank and the second blank are heated to 200-400 ℃ before welding, and then are welded.
In one embodiment of the present invention, the heat treatment is quenching and tempering, wherein the quenching temperature is 800-950 ℃, and the tempering temperature is 150-350 ℃.
The technical scheme has the following beneficial effects:
according to the invention, the shell of the recirculating ball steering gear is manufactured by adopting forging and welding technologies, and compared with the shell manufactured by adopting a casting technology, the weight of parts is greatly reduced, the waste of resources is reduced, the manufacturing process is optimized, and the production cost is lower; the welding seam has excellent performance by specially processing the welding surface; the heat treatment after welding enhances the strength and surface hardness of the diverter housing, so that the diverter housing has more excellent service performance.
Drawings
FIG. 1 is a schematic view of the overall structure of the invention after welding;
FIG. 2 is a schematic view of one configuration of the first and second blanks prior to welding in accordance with the present invention;
FIG. 3 is a schematic view of an alternate angle of the first blank of FIG. 2;
FIG. 4 is a schematic view of an alternate angle of the second blank of FIG. 2;
FIG. 5 is a schematic view of a weld of the present invention.
100. A first chamber; 200. a second chamber; 1. a first blank; 2. a second blank; 3. welding seams; 31. a first welding groove; 32. a second welding groove; 41. a first reinforcing band; 42. a second reinforcing band; 51. welding a first blank to form a machined surface; 52. and welding a machined surface of the second blank.
Detailed Description
The invention will now be further described with reference to the following examples and figures 1 to 5.
Example 1
A shell of a recirculating ball steering gear is a hollow shell, the hollow part is composed of a first cavity 100 and a second cavity 200, the first cavity 100 is communicated with the second cavity 200, and the axes of the first cavity 100 and the second cavity 200 are vertical to each other. The shell comprises a first blank 1 and a second blank 2, wherein the first blank 1 and the second blank 2 are both forging blanks, namely blanks manufactured in a forging mode. The first blank and the second blank are low-carbon alloy steel with good weldability, and the carbon content is 0.05-0.20%. Such as 15CrMn, etc. After the material is quenched and annealed, the surface hardness can reach more than HRC50, the tensile strength is more than 900MPa, the allowable stress is more than 400MPa, and the allowable stress is far higher than the allowable stress of 110MPa of the nodular cast iron. A first welding groove 31 is formed in the first blank 1, a second welding groove 32 is formed in the second blank 2, and the first blank 1 and the second blank 2 are matched through the first welding groove 31 and the second welding groove 32 to form a welding seam 3; the inclination angles of the first welding groove 31 and the second welding groove 32 are 30-50 °. The first blank 1 is provided with two first welding grooves 31 which are respectively positioned on the first blank welding processing surfaces 51; similarly, the second blank 2 also has two second welding bevels 32, one on each of the second blank welding faces 52.
The first cavity 100 is a hole-shaped cavity, and the first blank 1 and the second blank 2 are bisected along the axis of the first cavity 100. The first blank 1 is provided with a first reinforcing strip 41, the second blank 2 is correspondingly provided with a second reinforcing strip 42, and the first reinforcing strip 41 and the second reinforcing strip 42 correspond to form a reinforcing strip protruding out of the outer surface of the shell.
Example 2
A manufacturing method of a shell of a recirculating ball steering gear comprises the steps of firstly forging a first blank 1 and a second blank 2, and then respectively processing a first welding groove 31 and a second welding groove 32 on the first blank 1 and the second blank 2, wherein the welding grooves adopt oblique angles of 30-50 degrees. And heating the first blank 1 and the second blank 2 to 200-400 ℃ before welding so as to reduce the cracking of welding seams. And then welding the first blank 1 and the second blank 2 together to form a whole, finally carrying out quenching and tempering treatment on the welded whole, heating the part to 800-950 ℃, carrying out quenching, carrying out tempering at 150-350 ℃ on the part after quenching, wherein the tempering time is 150-250 minutes, the surface hardness of the part is greater than HRC50, and the tensile strength is greater than 900Mpa, so that the steering gear shell with excellent strength, surface hardness and service performance is obtained.
The shell of the recirculating ball steering gear prepared by the invention can greatly reduce the weight of parts, reduce the waste of resources and reduce the production cost.
The above-described embodiments are intended to be illustrative, rather than restrictive, of the present invention, and any alterations and modifications that do not create an inventive feature are intended to be included within the spirit of the invention and the scope of the appended claims.
Claims (5)
1. A shell of a recirculating ball steering gear is characterized in that the shell is a hollow shell, the hollow part consists of a first cavity and a second cavity, the first cavity is communicated with the second cavity, the shell comprises a first blank and a second blank, a first welding groove is formed in the first blank, a second welding groove is formed in the second blank, and the first blank and the second blank are matched through the first welding groove and the second welding groove to form a welding line; the first blank and the second blank are both forged blanks, and the first blank and the second blank are bisected along the axis of the first cavity;
the first blank and the second blank are low-carbon alloy steel, and the carbon content is 0.05-0.20%;
the inclination angles of the first welding groove and the second welding groove are 30-50 degrees.
2. The recirculating ball diverter housing of claim 1, wherein the axes of the first and second chambers are perpendicular to each other.
3. The recirculating ball diverter housing of claim 1, wherein the first blank has a first reinforcing strap and the second blank has a corresponding second reinforcing strap, the first and second reinforcing straps cooperating.
4. The recirculating ball diverter housing of claim 3, wherein the first and second reinforcing strips each protrude from an outer surface of the housing.
5. A method of manufacturing a recirculating ball diverter housing, comprising the steps of:
forging a blank: forging a first blank and a second blank;
processing a welding groove: respectively processing a first welding groove and a second welding groove on the first blank and the second blank, wherein the inclination angles of the first welding groove and the second welding groove are 30-50 degrees;
welding: welding the first blank and the second blank together into a whole;
and (3) heat treatment: carrying out heat treatment on the welded whole;
heating the first blank and the second blank to 200-400 ℃ before welding, and then welding;
the heat treatment is quenching and tempering treatment, wherein the quenching temperature is 800-950 ℃, and the tempering temperature is 150-350 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063995.0A CN109080695B (en) | 2018-09-12 | 2018-09-12 | Recirculating ball diverter housing and method of making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063995.0A CN109080695B (en) | 2018-09-12 | 2018-09-12 | Recirculating ball diverter housing and method of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109080695A CN109080695A (en) | 2018-12-25 |
| CN109080695B true CN109080695B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811063995.0A Active CN109080695B (en) | 2018-09-12 | 2018-09-12 | Recirculating ball diverter housing and method of making same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550427A (en) * | 2020-12-22 | 2021-03-26 | 银峰铸造（芜湖）有限公司 | Light steering gear housing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201357859Y (en) * | 2008-11-24 | 2009-12-09 | 杭州世宝汽车方向机有限公司 | Symmetric recirculating ball type hydraulic power steering gear shell |
| CN202879580U (en) * | 2012-10-30 | 2013-04-17 | 杭州世宝汽车方向机有限公司 | Circulating ball hydraulic power assisted steering gear with floatable piston |
| DE102012111211A1 (en) * | 2012-11-21 | 2014-05-22 | Zf Lenksysteme Gmbh | AUXILIARY POWER STEERING FOR MOTOR VEHICLES WITH REVERSIBLE PUMP |
| WO2014103556A1 (en) * | 2012-12-28 | 2014-07-03 | 日立オートモティブシステムズステアリング株式会社 | Power-steering device |
| CN104148783B (en) * | 2014-07-31 | 2016-06-15 | 南京力源轨道交通装备有限公司 | The manufacture method of forging hook tail frame |
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