CN106239067A - A kind of manufacturing process of automobile steering ball - Google Patents
A kind of manufacturing process of automobile steering ball Download PDFInfo
- Publication number
- CN106239067A CN106239067A CN201610791503.4A CN201610791503A CN106239067A CN 106239067 A CN106239067 A CN 106239067A CN 201610791503 A CN201610791503 A CN 201610791503A CN 106239067 A CN106239067 A CN 106239067A
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- Prior art keywords
- steering ball
- blank material
- mould
- ball end
- steering
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Classifications
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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
-
- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
Abstract
The invention discloses the manufacturing process of a kind of automobile steering ball, comprise the steps: the cutting of (1) blank material；(the heat treated of 2 blank material；(3) forging molding of blank material processes；(4) heat treatment of steering ball end；(5) Shot Blasting of steering ball end；(6) Shot Blasting of steering ball end；(7) finished product packing processes.Present configuration is simple, practical, by the strict heating-up temperature controlled in steering ball end manufacturing process and allowance so that the crudy of steering ball end is more preferable, and accuracy class is higher, carry out forging molding process by moulds different with the employing in ball rod portion to ball head simultaneously, effectively reduction in the numbers of seconds, cost-effective expense, this manufacturing process is simple simultaneously, meet the production requirement of reality, improve comprehensive utilization ratio.
Description
Technical field
The present invention relates to the manufacturing process of a kind of automobile steering ball.
Background technology
Steering ball end is called again ball stud or universal joint, refers to utilize ball-type to connect and realizes what out-of-alignment power transmitted
Frame for movement.Universal joint is critically important parts on automobile.Universal joint combines with power transmission shaft, referred to as cardan drive dress
Put.On the vehicle that front engine rear wheel drives, card gear is arranged on transmission output shaft and driving bridge main reducing
Between speed device power shaft；And the vehicle that front engine, front drives eliminates power transmission shaft, universal joint is arranged on both is responsible for driving
It is responsible for again between front axle half shaft and the wheel turned to.Though the ball stud head in auto parts machinery is the least, technology content is the lowest, it
It is to ensure that the key member of motor turning, balance, material and technique are had strict requirements.
The complex manufacturing technology of existing steering ball end, is not easy to using and producing of reality, and in actual processing
Often there is slight crack in middle bulb and ball rod connecting portion, cause the generation of a large amount of waste material, increase production cost.Due to ball head
And the function difference between ball rod, the requirement on machining accuracy causing both is different, but existing ball head and bulb
The conducting forging processing in bar portion typically uses mould one-shot forming, not only increases the manufacture difficulty of mould, and machining accuracy grade
Difference.
Summary of the invention
Present invention aim at providing the manufacture work of a kind of automobile steering ball for the deficiency existing for prior art
The technical scheme of skill, by the strict heating-up temperature controlled in steering ball end manufacturing process and allowance so that steering ball end
Crudy more preferable, accuracy class is higher, carries out forging molding by moulds different with the employing of ball rod to bulb simultaneously
Processing, effective reduction in the numbers of seconds, cost-effective expense, this manufacturing process is simple simultaneously, meets the production requirement of reality, improves
Comprehensive utilization ratio.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of manufacturing process of automobile steering ball, it is characterised in that: comprise the steps:
1) cutting of blank material:
A, according to design drawing and processing technique requirement, determine the blank size of blank material, further according to the size determined
Carry out blanking, raw material is placed on Cutting platform, and use retainer ring fixation, further according to the scale on Cutting platform
Determine raw-material facet, set cutting parameter simultaneously, cutter are directed at raw-material facet and carry out cutting operation,
Finally give blank material；
B, blank material to well cutting carry out the inspection of size, tolerance, end surface inclination and length dimension, it is ensured that it reaches
Actual processing request, it is simple to the post-production of blank material and process；
C, to checking qualified blank material to carry out the flushing on surface, the impurity on its surface is rinsed well, it is to avoid after impact
The phase process to blank material；
2) heat treated of blank material:
A, will clean up after blank material put into and add in hot plate, and spaced apart between adjacent blank material, spacer
From for 0.5～1.0cm, so that it is guaranteed that the heats of blank material；
B, again the hot plate that adds piling blank material is put on the swivel mount of circular heating furnace, and adjacent two add hot plate
Between be spaced 3～5cm, it is ensured that heat can give out from the bottoming hole of heating tray bottom, so that blank material to be heated
Each aspect can be carried out heat effect, and swivel mount rotates simultaneously, drives the rotation adding hot plate, improves blank material further and adds
Thermal effect and the efficiency of heating surface, it is to avoid temperature difference occurs；
3) forging molding of blank material processes:
A, the making of mould:
(1), first bulb mould is carried out according to the size of bulb in steering ball end in design drawing and the size of ball rod
Tool and the making of ball rod mould, and guarantee that the center of bulb mould and the ball rod mould made is at same level line
On, more respectively bulb and ball rod are processed, use two kinds of moulds to be processed, reduce the difficulty requirement of mould, improve
The forging required precision in later stage, reduces error precision, improves accuracy；
(2), bulb mould and ball rod mould to making verify, it is ensured that its dimensional requirement and required precision are arrived
Reach the design objective of reality；
B, the processing of ball rod:
(1), ball rod mould is placed on extruder, and uses verifying attachment to verify, it is ensured that ball rod mould with
Levelness between extruding platform, reduces error size, improves machining accuracy, then is fixed by ball rod mould；
(2) the blank material, by heating reaching the appointment time takes out from circular heating furnace, places it on extruder,
Processing length according to actual ball rod and cutting length in reserve, determine extruding size, and the extrusion on extruder is to blank
Material carries out extruded process；
(3), after ball rod extrusion process is good, vertical mobile device drives ball rod mould to move, so that ball rod
Mould separates with blank material, and horizontally moving device drives blank material to return in situ；
C, the processing of bulb
(1), while ball rod mould is installed, bulb mould is carried out according to actual machining on spherical end size and Working position
The device of tool, make the centrage of ball rod mould and bulb mould in same level, and ball rod mould and bulb mould
Place side by side, mounted mould is verified, it is ensured that its levelness, then it is fixed with squeeze station platform；
(2), when blank material is after the processing of ball rod mould, it is not necessary to carry out the dismounting of mould, by vertically moving dress
Put the blank material that will be moved in situ to move at the Working position of bulb mould, and guarantee blank material by infrared sensor
On the same line, extruder carries out squeezing action again to it so that bulb part adds at the center of center and bulb mould
Work completes, and ultimately forms steering ball end；
4) heat treatment of steering ball end:
A, first steering ball end being carried out Quenching Treatment, the temperature of Quenching Treatment is 830～850 DEG C；
B, again steering ball end being carried out temper, the temperature of temper is 180～200 DEG C, it is ensured that ball head HRC56
～63, ball rod portion HRC23～43, by Technology for Heating Processing, the material of steering ball end is changed so that it is more suitable for
Actual use, and the hardness of bulb and ball rod portion is handled differently；
5) Shot Blasting of steering ball end:
Steering ball end after heat treatment is placed in the machine table of shot-blasting machine, the wheelabrator on shot-blasting machine rotate from
Under the effect of mental and physical efforts, the steering ball end surface that abrasive material is processed with the highest linear velocity directive, produce and hit and ablation,
Remove oxide skin and the corrosion on steering ball end surface, and produce certain roughness；
6) Vehicle Processing of steering ball end processes:
A, first according to the screw thread process size in design size and processing length, guaranteeing machining accuracy and mismachining tolerance
Requirement under determine turning size and the processing number of times of screw thread, external screw cutting tool is arranged on lathe, and by steering ball end
It is fixed on lathe, carries out screw thread process；
B, then change external screw cutting tool into billmpse tool, steering ball end is carried out at rounding；
7) finished product packing processes:
The defect that the surface of perusal steering ball end is the most harmful, then use slide calliper rule, protractor to steering ball end
Size and angle of bend check, it is ensured that there is not crackle, scuffing, impression in the surface of steering ball end so that it is meet reality
The processing request on border, more standard compliant steering ball end is carried out the printing of model specification, and the surface of steering ball end is coated with
One layer of antirust oil of brush, then through final packaging warehouse-in.
Further, in step 2) step b in, circular heating furnace while blank material is carried out heat treated, temperature control
Temperature in circular heating furnace is monitored by monitoring case, by the temperature in temperature sensor measurement circular heating furnace, until
Temperature in circular heating furnace reaches the temperature value specified.
Further, the heating-up temperature of circular heating furnace is 600～750 DEG C.
Further, in step 6) and step 7) steering ball end need through Shape correction, by reeler to steering ball
Head carries out expansion so that the smooth surface of steering ball end so that ball head is more round just.
Further, in step 5) in, shot-blasting machine is while carrying out Shot Blasting to steering ball end, at the bottom of shot-blasting machine machine table
The dust exhaust apparatus in portion is opened, and is drawn the abrasive dust in machine table by dust suction pump, is drawn to abrasive dust in collecting box carry out
Centralized recovery processes, it is to avoid its splashes causes certain injury.
Further, in step 5) in, after Shot Blasting, need steering ball end is carried out magnetic powder inspection, it is ensured that steering ball end
There is not slight crack in surface, improves machining accuracy.
Manufacturing process of the present invention is simple, and overall procedure automation degree is high, it is simple to actual operation and use.
Simultaneously high by the precision of the steering ball end of this fabrication process, quality of finished product good, defect rate is low, and energy loss is little.And
This technical process is by strictly controlling blank size, heat time heating time, heat treatment time and heat treatment temperature, simultaneously to bulb and ball
Head rod carries out different forging processing so that the processing of steering ball end is the most convenient, reduces the manufacture difficulty of mould, after raising
The trimmed size of phase, improves the economic benefit of product.
Present configuration is simple, practical, by strictly controlling the heating-up temperature in steering ball end manufacturing process and adding
Spare time measures so that the crudy of steering ball end is more preferable, and accuracy class is higher, simultaneously by adopting ball head and ball rod portion
Carrying out forging molding process, effective reduction in the numbers of seconds, cost-effective expense with different moulds, this manufacturing process is simple simultaneously, full
The production requirement that foot is actual, improves comprehensive utilization ratio.
Detailed description of the invention
The manufacturing process of a kind of automobile steering ball, comprises the steps:
1) cutting of blank material:
A, according to design drawing and processing technique requirement, determine the blank size of blank material, further according to the size determined
Carry out blanking, raw material is placed on Cutting platform, and use retainer ring fixation, further according to the scale on Cutting platform
Determine raw-material facet, set cutting parameter simultaneously, cutter are directed at raw-material facet and carry out cutting operation,
Finally give blank material；
B, blank material to well cutting carry out the inspection of size, tolerance, end surface inclination and length dimension, it is ensured that it reaches
Actual processing request, it is simple to the post-production of blank material and process；
C, to checking qualified blank material to carry out the flushing on surface, the impurity on its surface is rinsed well, it is to avoid after impact
The phase process to blank material；
2) heat treated of blank material:
A, will clean up after blank material put into and add in hot plate, and spaced apart between adjacent blank material, spacer
From for 0.5～1.0cm, so that it is guaranteed that the heats of blank material；
B, again the hot plate that adds piling blank material is put on the swivel mount of circular heating furnace, and adjacent two add hot plate
Between be spaced 3～5cm, it is ensured that heat can give out from the bottoming hole of heating tray bottom, so that blank material to be heated
Each aspect can be carried out heat effect, and swivel mount rotates simultaneously, drives the rotation adding hot plate, improves blank material further and adds
Thermal effect and the efficiency of heating surface, it is to avoid temperature difference occurs；
3) forging molding of blank material processes:
A, the making of mould:
(1), first bulb mould is carried out according to the size of bulb in steering ball end in design drawing and the size of ball rod
Tool and the making of ball rod mould, and guarantee that the center of bulb mould and the ball rod mould made is at same level line
On, more respectively bulb and ball rod are processed, use two kinds of moulds to be processed, reduce the difficulty requirement of mould, improve
The forging required precision in later stage, reduces error precision, improves accuracy；
(2), bulb mould and ball rod mould to making verify, it is ensured that its dimensional requirement and required precision are arrived
Reach the design objective of reality；
B, the processing of ball rod:
(1), ball rod mould is placed on extruder, and uses verifying attachment to verify, it is ensured that ball rod mould with
Levelness between extruding platform, reduces error size, improves machining accuracy, then is fixed by ball rod mould；
(2) the blank material, by heating reaching the appointment time takes out from circular heating furnace, places it on extruder,
Processing length according to actual ball rod and cutting length in reserve, determine extruding size, and the extrusion on extruder is to blank
Material carries out extruded process, and circular heating furnace is while carrying out heat treated to blank material, and circulation is added by Temperature-control Monitoring case
Temperature in hot stove is monitored, by the temperature in temperature sensor measurement circular heating furnace, until in circular heating furnace
Temperature reaches the temperature value specified, and the heating-up temperature of circular heating furnace is 600～750 DEG C；
(3), after ball rod extrusion process is good, vertical mobile device drives ball rod mould to move, so that ball rod
Mould separates with blank material, and horizontally moving device drives blank material to return in situ；
C, the processing of bulb
(1), while ball rod mould is installed, bulb mould is carried out according to actual machining on spherical end size and Working position
The device of tool, make the centrage of ball rod mould and bulb mould in same level, and ball rod mould and bulb mould
Place side by side, mounted mould is verified, it is ensured that its levelness, then it is fixed with squeeze station platform；
(2), when blank material is after the processing of ball rod mould, it is not necessary to carry out the dismounting of mould, by vertically moving dress
Put the blank material that will be moved in situ to move at the Working position of bulb mould, and guarantee blank material by infrared sensor
On the same line, extruder carries out squeezing action again to it so that bulb part adds at the center of center and bulb mould
Work completes, and ultimately forms steering ball end；
4) heat treatment of steering ball end:
A, first steering ball end being carried out Quenching Treatment, the temperature of Quenching Treatment is 830～850 DEG C；
B, again steering ball end being carried out temper, the temperature of temper is 180～200 DEG C, it is ensured that ball head HRC56
～63, ball rod portion HRC23～43, by Technology for Heating Processing, the material of steering ball end is changed so that it is more suitable for
Actual use, and the hardness of bulb and ball rod portion is handled differently；
5) Shot Blasting of steering ball end:
Steering ball end after heat treatment is placed in the machine table of shot-blasting machine, the wheelabrator on shot-blasting machine rotate from
Under the effect of mental and physical efforts, the steering ball end surface that abrasive material is processed with the highest linear velocity directive, produce and hit and ablation,
Removing oxide skin and the corrosion on steering ball end surface, and produce certain roughness, shot-blasting machine is carrying out ball blast to steering ball end
While process, the dust exhaust apparatus bottom shot-blasting machine machine table is opened, and is drawn the abrasive dust in machine table by dust suction pump,
It is drawn to abrasive dust in collecting box carry out centralized recovery process, it is to avoid its splashes causes certain injury, after Shot Blasting,
Need steering ball end is carried out magnetic powder inspection, it is ensured that slight crack does not occur in steering ball end surface, improves machining accuracy；
6) Vehicle Processing of steering ball end processes:
A, first according to the screw thread process size in design size and processing length, guaranteeing machining accuracy and mismachining tolerance
Requirement under determine turning size and the processing number of times of screw thread, external screw cutting tool is arranged on lathe, and by steering ball end
It is fixed on lathe, carries out screw thread process；
B, then change external screw cutting tool into billmpse tool, steering ball end is carried out at rounding；
7) finished product packing processes:
It is turning initially to bulb need, through Shape correction, by reeler, steering ball end to be carried out expansion so that steering ball
The smooth surface of head so that ball head is more round just
Then the defect that the surface of perusal steering ball end is the most harmful, then use slide calliper rule, protractor to turning to
Size and the angle of bend of bulb check, it is ensured that crackle, scuffing, impression does not occur in the surface of steering ball end so that it is symbol
The processing request that conjunction is actual, more standard compliant steering ball end is carried out the printing of model specification, and the table to steering ball end
One layer of antirust oil of topcoating brush, then through final packaging warehouse-in.
These are only the specific embodiment of the present invention, but the technical characteristic of the present invention is not limited thereto.Any with this
Based on bright, for realizing essentially identical technique effect, done ground simple change, equivalent or modification etc., all contain
Among protection scope of the present invention.
Claims (6)
1. the manufacturing process of an automobile steering ball, it is characterised in that: comprise the steps:
1) cutting of blank material:
A, according to design drawing and processing technique requirement, determine the blank size of blank material, carry out further according to the size determined
Blanking, is placed on raw material on Cutting platform, and uses retainer ring fixation, determines further according to the scale on Cutting platform
Raw-material facet, sets cutting parameter simultaneously, cutter is directed at raw-material facet and carries out cutting operation, finally
Obtain blank material；
B, blank material to well cutting carry out the inspection of size, tolerance, end surface inclination and length dimension, it is ensured that it reaches actual
Processing request, it is simple to the post-production of blank material and process；
C, to checking qualified blank material to carry out the flushing on surface, the impurity on its surface is rinsed well, it is to avoid affect the later stage pair
The process of blank material；
2) heat treated of blank material:
A, will clean up after blank material put into and add in hot plate, and spaced apart between adjacent blank material, spacing distance is
0.5～1.0cm, so that it is guaranteed that the heats of blank material；
B, again the hot plate that adds piling blank material is put on the swivel mount of circular heating furnace, and adjacent two add between hot plate
Interval 3～5cm, it is ensured that heat can give out, so that blank material to be heated is each from the bottoming hole of heating tray bottom
Aspect can be carried out heat effect, and swivel mount rotates simultaneously, drives the rotation adding hot plate, improves former blank heating effect further
Fruit and the efficiency of heating surface, it is to avoid temperature difference occurs；
3) forging molding of blank material processes:
A, the making of mould:
(1), first according to the size of bulb in steering ball end in design drawing and the size of ball rod carry out bulb mould and
The making of ball rod mould, and guarantee the center of bulb mould and the ball rod mould made in the same horizontal line, then
Respectively bulb and ball rod are processed, use two kinds of moulds to be processed, reduce the difficulty requirement of mould, improve the later stage
Forging required precision, reduces error precision, improves accuracy；
(2), bulb mould and ball rod mould to making verify, it is ensured that its dimensional requirement and required precision arrive real
The design objective on border；
B, the processing of ball rod:
(1), ball rod mould is placed on extruder, and uses verifying attachment to verify, it is ensured that ball rod mould and extruding
Levelness between platform, reduces error size, improves machining accuracy, then is fixed by ball rod mould；
(2) the blank material, by heating reaching the appointment time takes out from circular heating furnace, places it on extruder, according to
The processing length of actual ball rod and cutting length in reserve, determine extruding size, and blank material is entered by the extrusion on extruder
The extruded process of row；
(3), after ball rod extrusion process is good, vertical mobile device drives ball rod mould to move, so that ball rod mould
Separating with blank material, horizontally moving device drives blank material to return in situ；
C, the processing of bulb
(1), while ball rod mould is installed, bulb mould is carried out according to actual machining on spherical end size and Working position
Device, makes the centrage of ball rod mould and bulb mould in same level, and ball rod mould is arranged side by side with bulb mould
Place, mounted mould is verified, it is ensured that its levelness, then it is fixed with squeeze station platform；
(2), when blank material is after the processing of ball rod mould, it is not necessary to carry out the dismounting of mould, will by vertical movement apparatus
Move to blank material in situ move at the Working position of bulb mould, and guaranteed the center of blank material by infrared sensor
With the center of bulb mould on the same line, extruder carries out squeezing action again to it so that bulb part processes
Become, ultimately form steering ball end；
4) heat treatment of steering ball end:
A, first steering ball end being carried out Quenching Treatment, the temperature of Quenching Treatment is 830～850 DEG C；
B, again steering ball end being carried out temper, the temperature of temper is 180～200 DEG C, it is ensured that ball head HRC56～
63, ball rod portion HRC23～43, be changed the material of steering ball end by Technology for Heating Processing so that it is more suitable for reality
The use on border, and the hardness of bulb and ball rod portion is handled differently；
5) Shot Blasting of steering ball end:
Being placed in the machine table of shot-blasting machine by steering ball end after heat treatment, the wheelabrator on shot-blasting machine is at rotary centrifugal force
Effect under, abrasive material with the processed steering ball end surface of the highest linear velocity directive, produce and hit and ablation, remove
The oxide skin on steering ball end surface and corrosion, and produce certain roughness；
6) Vehicle Processing of steering ball end processes:
A, first according to the screw thread process size in design size and processing length, guaranteeing wanting of machining accuracy and mismachining tolerance
Ask the lower turning size determining screw thread and processing number of times, external screw cutting tool is arranged on lathe, and steering ball end is fixed
On lathe, carry out screw thread process；
B, then change external screw cutting tool into billmpse tool, steering ball end is carried out at rounding；
7) finished product packing processes:
The defect that the surface of perusal steering ball end is the most harmful, then use slide calliper rule, the protractor chi to steering ball end
Very little and angle of bend checks, it is ensured that crackle, scuffing, impression does not occur in the surface of steering ball end so that it is meet reality
Processing request, more standard compliant steering ball end is carried out the printing of model specification, and the external coating one to steering ball end
Layer antirust oil, then through final packaging warehouse-in.
The manufacturing process of a kind of automobile steering ball the most according to claim 1, it is characterised in that: in described step 2)
In step b, circular heating furnace is while carrying out heat treated to blank material, and Temperature-control Monitoring case is to the temperature in circular heating furnace
It is monitored, by the temperature in temperature sensor measurement circular heating furnace, until the temperature in circular heating furnace reaches to specify
Temperature value.
The manufacturing process of a kind of automobile steering ball the most according to claim 2, it is characterised in that: described circular heating furnace
Heating-up temperature be 600～750 DEG C.
The manufacturing process of a kind of automobile steering ball the most according to claim 1, it is characterised in that: in described step 6) and
Described step 7) steering ball end need, through Shape correction, by reeler, steering ball end to be carried out expansion so that steering ball
The smooth surface of head so that ball head is more round just.
The manufacturing process of a kind of automobile steering ball the most according to claim 1, it is characterised in that: in described step 5)
In, shot-blasting machine is while carrying out Shot Blasting to steering ball end, and the dust exhaust apparatus bottom shot-blasting machine machine table is opened, by inhaling
Abrasive dust in machine table is drawn by dirt pump, is drawn to abrasive dust in collecting box carry out centralized recovery process, it is to avoid it is everywhere
Splash and cause certain injury.
The manufacturing process of a kind of automobile steering ball the most according to claim 1, it is characterised in that: in described step 5)
In, after Shot Blasting, need steering ball end is carried out magnetic powder inspection, it is ensured that slight crack does not occur in steering ball end surface, improves
Machining accuracy.
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| CN201610791503.4A CN106239067B (en) | 2016-08-31 | 2016-08-31 | A kind of manufacturing process of automobile steering ball |
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| CN201610791503.4A CN106239067B (en) | 2016-08-31 | 2016-08-31 | A kind of manufacturing process of automobile steering ball |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106834619A (en) * | 2016-12-30 | 2017-06-13 | 万向钱潮（桂林）汽车底盘部件有限公司 | A kind of car ball stud surface heat treatment process |
| CN112935736A (en) * | 2021-01-29 | 2021-06-11 | 海盐天士精密五金科技有限公司 | Production process of suspension connecting shaft |
| CN112935711A (en) * | 2021-01-26 | 2021-06-11 | 安徽中鼎减震橡胶技术有限公司 | Machining process of ball pin for automobile |
| CN114434090A (en) * | 2020-10-30 | 2022-05-06 | 黄俊杰 | Method for manufacturing universal sleeve integrated joint piece |
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| WO2015129313A1 (en) * | 2014-02-27 | 2015-09-03 | 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 and method for manufacturing ball screw for power steering device |
| CN105643210A (en) * | 2016-01-22 | 2016-06-08 | 吴景霖 | Golf ball head structure and production process thereof |
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| CN106834619A (en) * | 2016-12-30 | 2017-06-13 | 万向钱潮（桂林）汽车底盘部件有限公司 | A kind of car ball stud surface heat treatment process |
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| CN112935711A (en) * | 2021-01-26 | 2021-06-11 | 安徽中鼎减震橡胶技术有限公司 | Machining process of ball pin for automobile |
| CN112935736A (en) * | 2021-01-29 | 2021-06-11 | 海盐天士精密五金科技有限公司 | Production process of suspension connecting shaft |
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