CN205859099U - A kind of automobile steering system worm blank workpiece - Google Patents
A kind of automobile steering system worm blank workpiece Download PDFInfo
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- CN205859099U CN205859099U CN201620625816.8U CN201620625816U CN205859099U CN 205859099 U CN205859099 U CN 205859099U CN 201620625816 U CN201620625816 U CN 201620625816U CN 205859099 U CN205859099 U CN 205859099U
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- processing cylinder
- steering system
- rod
- automobile steering
- sidepiece
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Abstract
The utility model discloses a kind of automobile steering system worm blank workpiece, have the worm screw body of rod, the medium position of the described worm screw body of rod is main rod body to be processed, described main rod body to be processed be symmetrically arranged on two with two ring flanges, described main rod body to be processed is set to irregular long rod structure, the diameter of its long rod structure is gradually reduced toward center from both ends, is provided with one section of empty avoiding connecting rod between described main rod body to be processed and the ring flange of sidepiece.Described automobile steering system worm blank workpiece, is effectively improved product quality, is effectively improved molding effect, improves end product quality.
Description
Technical field:
This utility model relates to a kind of automobile steering system worm blank workpiece, relates to the machining of auto parts
Field.
Background technology:
In automobile steering system, the processing of the screw thread on its worm screw, current widely used traditional metal cutting process
Method, i.e. point twice or three road difference procedure of processing or methods, the most continuously worm screw raw material blank is processed:
First step roughing, milling mode removes lot of materials, processes the approximate shape of screw thread and reserves some surpluses and add for follow-up
Work；Secondly semifinishing, grinding goes out to meet the thread size of drawing requirement；Last polish, extruding polishing thread surface.
After the equipment elder generation post-treatment of different process above, the crudy of its worm thread is fine, but investment height, raw
Produce inefficient；Especially, owing between different operation single device, productive temp is unbalanced, maximum disparity is more than more than 2 times,
In order to improve production capacity and maximize the equipment i.e. utilization rate of finish machining equipment that performance beat is little, need to add one or two
Equipment i.e. roughing that beat is big or semifinishing equipment, so correspondingly increasing the investment of equipment and plant area, thus
Further increase the equipment investment amount of money, make total equipment investment volume the highest, and for can bigger raising production efficiency one
For body formed Thread extruder bed, using original worm blank to be processed, its molding effect is bad, and qualification rate is low,
Machining accuracy and prescription can not be met.
Utility model content:
Technical problem to be solved in the utility model is: provide one facilitate fabrication and processing and can be effectively improved worm screw spiral shell
The machine-shaping effect of stricture of vagina extruding lathe and the worm blank workpiece of product quality.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions:
A kind of automobile steering system worm blank workpiece, has the worm screw body of rod, the medium position of the described worm screw body of rod
For main rod body to be processed, described main rod body to be processed be symmetrically arranged on two with two ring flanges, described main rod body to be processed is arranged
For irregular long rod structure, the diameter of its long rod structure is gradually reduced toward center along axis from both ends, described to be processed
One section of empty avoiding connecting rod it is provided with between main rod body and the ring flange of sidepiece.
As preferably, described main rod body to be processed includes two sections of points of bodies of rod, has and sets for middle part processing cylinder and symmetry
Putting the sidepiece processing cylinder in processing cylinder both sides, middle part, the diameter of two described sidepiece processing cylinders is identical and is all higher than middle part
The diameter of processing cylinder, described sidepiece processing cylinder is coaxially disposed with middle part processing cylinder.
As preferably, the upper following arc-shaped side being set to middle part indent of the axial cross section of described main rod body to be processed.
As preferably, be provided with between described middle part processing cylinder and sidepiece processing cylinder an inclination the section of being smoothly connected or
The section of being smoothly connected of arc.
As preferably, the angle between the section of being smoothly connected and the axis of worm blank of described inclination is set to 15 °-60 °.
As preferably, the semidiameter between described sidepiece processing cylinder and middle part processing cylinder is less than 0.15mm.
As preferably, the diameter of described sidepiece processing cylinder is disposed as 13.26mm-13.28mm, described middle part processing post
The diameter of body is set to 13.12mm-13.14mm.
As preferably, the length of described middle part processing cylinder is set to 25mm, and the length of described sidepiece processing cylinder is provided with
4.8mm-5.2mm。
As preferably, column connecting rod that described empty avoiding connecting rod includes being positioned at ring flange side and cone shape transition
The body of rod, the described transition body of rod is placed between sidepiece processing cylinder and column connecting rod.
As preferably, the length of described empty avoiding connecting-rod body is set to 13.45mm-13.95mm, described column connecting rod straight
Footpath is set to 9.2mm, and the inclination angle between inclined plane and the worm blank axis of the described transition body of rod is set to 20 °.
Compared with prior art, of the present utility model have the beneficial effect that described automobile steering system worm blank is processed
Part, uses the cylinder to be processed of setting table scalariform on the machined surface at worm blank part, and the diameter of middle part processing cylinder is little
In the processing cylinder of both sides, thus during it is processed to worm screw finished product, the spiral shell of Thread extruder bed can be prevented effectively from
When the blank body of rod is processed by stricture of vagina extrusion die, effectively to the partial racks top at worm screw both ends in screw thread closed moulding mistake
The gap produced in journey compensates, and then improves product quality, is effectively improved molding effect, improves end product quality, saves into
This, thus there is higher economic benefit.
Accompanying drawing illustrates:
Below in conjunction with the accompanying drawings this utility model is further illustrated:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structure for amplifying schematic diagram in Fig. 1 at A.
Detailed description of the invention:
Below in conjunction with the accompanying drawings and this utility model is described in detail by detailed description of the invention:
A kind of automobile steering system worm blank workpiece as shown in Figure 1, is primarily used to worm thread extruder
It is processed becoming worm screw finished product by bed by screw thread extrusion die, has the worm screw body of rod 1, the middle part of the described worm screw body of rod 1
Position is main rod body 2 to be processed, described main rod body 2 to be processed be symmetrically arranged on two with two ring flanges 3, described mobile jib to be processed
Body 2 is set to irregular long rod structure, and the diameter of its long rod structure is gradually reduced toward center along axis from both ends, described
It is provided with one section of empty avoiding connecting rod 4 between main rod body 2 to be processed and the ring flange 3 of sidepiece, in actual applications, is processed into for convenience
Type, as one of which embodiment, described main rod body 2 to be processed includes two sections of points of bodies of rod, has and processes cylinder 21 for middle part
And the sidepiece processing cylinder 22 of processing cylinder 21 both sides in the middle part of being symmetricly set on, two described sidepieces process the diameter of cylinders 22
Identical and be all higher than the diameter of middle part processing cylinder 21, the processing of described sidepiece cylinder 22 and middle part process cylinder 21 and are coaxially disposed.
Preferably, for the process avoiding the screw thread extrusion die on Thread extruder bed that worm blank is processed
In, the edge of the worm screw body of rod produces impact to screw thread extrusion die, and affects the course of processing and machining accuracy, described keeps away
Empty connecting rod 4 includes column connecting rod 41 and the cone shape transition body of rod 42, the described transition body of rod being positioned at ring flange 3 side
42 are placed between sidepiece processing cylinder 22 and column connecting rod 41, and the diameter of column connecting rod is straight less than main rod body to be processed
Footpath, thus the side of screw thread extrusion die with generation processing main rod body side can effectively empty avoiding, enhancing the course of processing stability.
In actual application, as in figure 2 it is shown, for convenience of processing and adding for processing cylinder 21 and sidepiece in the middle part of newspaper
Semidiameter between work cylinder 22, adds man-hour actual, is provided with between described middle part processing cylinder 21 and sidepiece processing cylinder 22
One section of being smoothly connected 5 tilted or the section of being smoothly connected of arc, thus keep middle part processing cylinder and sidepiece processing cylinder it
Between there is smooth changeover portion, and add the extruded effect in man-hour for convenience of processing and improving further, described in incline
The oblique angle between the section of being smoothly connected 5 and the axis of worm blank is set to 15 °-60 °.
It addition, preferably, the semidiameter between described sidepiece processing cylinder 22 and middle part processing cylinder 21
Less than 0.15mm, specifically, the diameter of described sidepiece processing cylinder 22 is disposed as 13.26mm-13.28mm, and described middle part adds
The diameter of work cylinder 21 is set to 13.12mm-13.14mm, and the length of described middle part processing cylinder 21 is set to 25mm, described side
The length of portion's processing cylinder 22 is provided with 4.8mm-5.2mm, owing to screw thread extrusion die is in the extruded process to worm blank
In, be distributed in the partial racks at worm blank two ends in closing course, can in its generation gap, tooth bar top, thus, side
Portion's processing cylinder and the diameter difference design of middle part processing cylinder, can effectively close in screw thread extruding the tooth bar of worm screw edge
Compensating in forming process, the gap being prevented effectively from the tooth bar top being distributed in end produces, and above-mentioned size design,
Save while material, not only facilitate the fabrication and processing molding of worm blank part, and be processed to the mistake of worm screw finished product at it
Cheng Zhong, can reach optimal finished product molding effect, meet requirement on machining accuracy, meets quality and the performance requirement of finished product.
As this utility model an alternate embodiment, the axial cross section of described main rod body 2 to be processed upper following
It is set to the arc-shaped side of middle part indent, thus while meeting processing request, is also convenient for machine-shaping, meet end product quality and want
Ask.
It addition, this utility model also provides for the forming method of a kind of automobile steering system worm blank workpiece, including
Following processing step, step one: first the 45# parcel material steel being in the hot rolling Φ 20mm of annealed condition are carried out globe daisy annealing
PROCESS FOR TREATMENT, then uses cold-drawing technology that steel are cold drawing to a diameter of 17.5mm, and the full-length according still further to technological requirement is entered
Row cut-out processes；Step 2: the semi-finished product after cutting off are modulated PROCESS FOR TREATMENT, specifically include following operation, operation
One: semi-finished product are carried out Quenching Treatment, temperature is 810 °-920 °, and the time is 100 minutes.Operation two: half after quenching becomes
Product blank carries out oil cold treatment.Operation three: the blank after cold for oil is carried out temper, and temperature is 550 °-650 °, and the time is
120 minutes operations four: the blank after tempering is carried out water-cooled process；Step 3: continue to pass through blank semi-finished articles
Aligning operation eliminates stress, and after making product aligning, linearity is less than the state that 0.15mm reaches qualified, is then carried out by lathe
It is ground to a diameter of 17.25mm, and is carried out whether flaw detection meets product requirement；Step 4: first pass through lathe and enter
The preliminary rough turn operation of row, processes the profile of worm blank, and then finish turning goes out the middle part processing cylinder of worm blank part, the most again
Each several part dimensional requirement according to worm blank part, carries out ground finish to its each several part respectively, to meet dimension and shape
Requirement.
Material after the heat treatment used in above-mentioned steps has a tension mechanical strength more than 650MPa, and quenching and tempering hardness
For 13-25HRC, and difference nonhomogeneous hardness≤2HRC, thus meet machine-shaping demand and the later stage is processed into finished product mistake
Processing request in journey and end product quality.
In actual applications, for meet worm blank batch making produce time, for improve production efficiency, in described step
In four, the while that the grinding tool of lathe being arranged to, middle part processes cylinder and sidepiece processing cylinder, machine-shaping is one-body molded
Grinding tool, thus in the actual course of processing, by one-body molded grinding tool, worm blank is carried out one-body molded processing, process simultaneously
Go out middle part processing cylinder and sidepiece processing cylinder, then improve also have while working (machining) efficiency preferable machining accuracy with
And Forming Quality.
It addition, alternatively embodiment, by the extended length of main rod body to be processed, the length after it lengthens is set to
40mm-45mm, thus in worm blank during being processed into finished product, thus lengthen main rod body to be processed also can have
Effect avoids the generation gap, tooth bar top at worm screw finished product both ends, it is ensured that end product quality.
Above-mentioned automobile steering system worm blank workpiece, uses and arranges step on the machined surface at worm blank part
The cylinder to be processed of shape, and the diameter of middle part processing cylinder is less than the processing cylinder of both sides, thus it is processed to worm screw at it
During product, the screw thread extrusion die of Thread extruder bed can be prevented effectively from time the blank body of rod is processed, effectively to snail
The gap that the partial racks top at bar both ends produces during screw thread closed moulding compensates, and then improves product matter
Amount, is effectively improved molding effect, cost-effective.
It is emphasized that: be the most only preferred embodiment of the present utility model, not this utility model appointed
What pro forma restriction, every according to technical spirit of the present utility model, above example is made any simple modification, etc.
With change and modification, all still fall within the range of technical solutions of the utility model.
Claims (10)
1. an automobile steering system worm blank workpiece, has the worm screw body of rod (1), it is characterised in that: described worm screw bar
The medium position of body (1) is main rod body to be processed (2), described main rod body to be processed (2) be symmetrically arranged on two with two ring flanges
(3), described main rod body to be processed (2) is set to irregular long rod structure, and the diameter of its long rod structure is past along axis from both ends
Center is gradually reduced, and is provided with one section of empty avoiding connecting rod between described main rod body to be processed (2) and the ring flange (3) of sidepiece
(4).
A kind of automobile steering system worm blank workpiece the most according to claim 1, it is characterised in that: described to be added
Work main rod body (2) includes two sections of points of bodies of rod, has middle part processing cylinder (21) and is symmetricly set on middle part processing cylinder (21)
Sidepiece processing cylinder (22) of both sides, the diameter of two described sidepieces processing cylinder (22) is identical and is all higher than middle part processing cylinder
(21) diameter, described sidepiece processing cylinder (22) is coaxially disposed with middle part processing cylinder (21).
A kind of automobile steering system worm blank workpiece the most according to claim 1, it is characterised in that: described to be added
The upper arc-shaped side being set to middle part indent below of the axial cross section of work main rod body (2).
A kind of automobile steering system worm blank workpiece the most according to claim 2, it is characterised in that: described middle part
It is provided with the section of being smoothly connected (5) of an inclination or being smoothly connected of arc between processing cylinder (21) and sidepiece processing cylinder (22)
Section.
A kind of automobile steering system worm blank workpiece the most according to claim 4, it is characterised in that: described inclination
The section of being smoothly connected (5) and the axis of worm blank between angle be set to 15 °-60 °.
A kind of automobile steering system worm blank workpiece the most according to claim 2, it is characterised in that: described sidepiece
Semidiameter between processing cylinder (22) and middle part processing cylinder (21) is less than 0.15mm.
A kind of automobile steering system worm blank workpiece the most according to claim 6, it is characterised in that: described sidepiece
The diameter of processing cylinder (22) is disposed as 13.26mm-13.28mm, and the diameter at described middle part processing cylinder (21) is set to
13.12mm-13.14mm。
A kind of automobile steering system worm blank workpiece the most according to claim 2, it is characterised in that: described middle part
The length of processing cylinder (21) is set to 25mm, and the length of described sidepiece processing cylinder (22) is provided with 4.8mm-5.2mm.
A kind of automobile steering system worm blank workpiece the most according to claim 2, it is characterised in that: described empty avoiding
Connecting rod (4) includes column connecting rod (41) and the cone shape transition body of rod (42), the described mistake being positioned at ring flange (3) side
Cross the body of rod (42) to be placed between sidepiece processing cylinder (22) and column connecting rod (41).
A kind of automobile steering system worm blank workpiece the most according to claim 9, it is characterised in that keep away described in:
The length of empty connecting-rod body (4) is set to 13.45mm-13.95mm, and the diameter of described column connecting rod (41) is set to 9.2mm, described
Inclination angle between inclined plane and the worm blank axis of the transition body of rod (42) is set to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625816.8U CN205859099U (en) | 2016-06-23 | 2016-06-23 | A kind of automobile steering system worm blank workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620625816.8U CN205859099U (en) | 2016-06-23 | 2016-06-23 | A kind of automobile steering system worm blank workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN205859099U true CN205859099U (en) | 2017-01-04 |
Family
ID=57637058
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620625816.8U Active CN205859099U (en) | 2016-06-23 | 2016-06-23 | A kind of automobile steering system worm blank workpiece |
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| Country | Link |
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| CN (1) | CN205859099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438927A (en) * | 2016-06-23 | 2017-02-22 | 耐世特汽车系统（苏州）有限公司 | Worm workblank machining piece for automobile steering system and molding method of worm workblank machining piece |
-
2016
- 2016-06-23 CN CN201620625816.8U patent/CN205859099U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438927A (en) * | 2016-06-23 | 2017-02-22 | 耐世特汽车系统（苏州）有限公司 | Worm workblank machining piece for automobile steering system and molding method of worm workblank machining piece |
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