CN208728336U - A kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe - Google Patents
A kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe Download PDFInfo
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- CN208728336U CN208728336U CN201820939455.3U CN201820939455U CN208728336U CN 208728336 U CN208728336 U CN 208728336U CN 201820939455 U CN201820939455 U CN 201820939455U CN 208728336 U CN208728336 U CN 208728336U
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Abstract
The utility model relates to arrive a kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe, including external mold and plug, sizing reduction section, wall-reducting section and the sizing section being coaxially successively connected are offered on external mold；The head of plug be disposed with sizing reduction section, wall-reducting section and the one-to-one tube reducing mold core of sizing section, subtract wall mold core and sizing mold core, rod head is circumferentially evenly equipped at least three grooves axially extending along plug, which extends to the intersection for subtracting wall mold core and tube reducing mold core from the end of sizing mold core.Axial reinforcement convex ribs are set on the tube body inner wall of seamless steel pipe, seamless steel pipe is made to further increase rigidity on the basis of not increasing wall thickness and diameter, this seamless steel pipe can be used as trailing link, substantially reduce the weight of traditional trailing link.
Description
Technical field:
The utility model relates to a kind of cold drawing dies of automobile longitudinal distance rod seamless steel pipe.
Background technique:
Automobile longitudinal distance rod is typically used on the doube bridge equalizing type of suspension of automobile, for improving the ground connection of automobile tire
Property, guarantee the harmony of load between two bridges or more bridges under various operating conditions.Trailing link be mainly used to transmit longitudinal loading and
Torque guarantees the transmitting of front and back stages power, and automotive suspension trailing link is mostly "-" type bar distance rod, Ke Yichuan at present
Biggish load and torque are passed, but this distance rod weight is too big, automobile energy consumption is unfavorable to reducing.
Utility model content:
The utility model technical problems to be solved first are: providing a kind of nothing that can manufacture tubular type automobile longitudinal distance rod
Stitch steel pipe.
In order to solve the above technical problems, the technical solution adopted in the utility model is: automobile longitudinal distance rod seamless steel
Pipe, including tube body, are circumferentially evenly equipped at least three reinforcement convex ribs axially extending along tube body on tube body inner wall.
As a preferred embodiment, the thickness for reinforcing convex ribs is 0.8~1.2 times of tube body wall thickness, reinforces convex ribs
Root width is the 1/10~1/20 of tube body inner circle perimeter.
As a preferred embodiment, the cross sectional shape for reinforcing convex ribs is " V " shape, and head is round and smooth, root and tube body
Inner wall round-corner transition.
As a preferred embodiment, the quantity for reinforcing convex ribs is five, and the thickness for reinforcing convex ribs is equal to tube body
Wall thickness.
The beneficial effect of the technical program is: axial reinforcement convex ribs being arranged on the tube body inner wall of seamless steel pipe, make nothing
Seam steel pipe further increases rigidity on the basis of not increasing wall thickness and diameter, pushes away so that the rigidity of seamless steel pipe be made to reach longitudinal
The rigidity requirement of power bar, this seamless steel pipe can be used as trailing link, keep the weight of traditional trailing link big
It is big to reduce.
The further technical problems to be solved of the utility model are: providing a kind of manufacture trailing link seamless steel pipe
Cold drawing die.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of cold drawing die, for manufacturing
Manufacture trailing link seamless steel pipe is stated, which includes external mold and plug, is offered on the external mold through external mold
Cold drawn forming hole, cold drawn forming hole includes the coaxially sizing reduction section, wall-reducting section and the sizing section that are successively connected, the sizing reduction section and is subtracted
Wall section is the taper type hole gradually tapered up to sizing section, and sizing reduction section taper is greater than wall-reducting section taper, and the sizing section is circle
Post holes；The head of the plug be disposed with sizing reduction section, wall-reducting section and the one-to-one tube reducing mold core of sizing section, subtract wall mould
Core and sizing mold core, tube reducing mold core are cylindrical body, and subtracting wall mold core is truncated cone, and sizing mold core is cylindrical body, tube reducing mold core
Diameter be less than sizing mold core diameter, subtract wall mold core link up smoothly between tube reducing mold core and sizing mold core, the head of plug with
Gap is provided between cold drawn forming hole, gap size is determined by cold-drawn thickness of pipe wall, and rod head is circumferentially evenly equipped at least three
The groove axially extending along plug, the groove extend to the intersection for subtracting wall mold core and tube reducing mold core from the end of sizing mold core,
Depth of the groove on sizing mold core is the half of the difference of sizing mold core and tube reducing mold core diameter, and groove is subtracting the depth on wall mold core
Degree is gradually reduced with the taper for subtracting wall mold core.
As a preferred embodiment, the axial length ratio of the sizing reduction section, wall-reducting section and sizing section is 10:7:3.
The beneficial effect of the technical program is: by the way that groove is arranged on wall mold core and sizing mold core in subtracting for rod head,
To make to reinforce convex ribs integrally formed with convex ribs are reinforced on the seamless steel pipe internal wall after cold-drawn and effectively increase the rigid of seamless steel pipe
Degree, in this way when using this seamless steel pipe to manufacture trailing link, can reduce the weight of trailing link.
Detailed description of the invention:
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the sectional view of automobile longitudinal distance rod seamless steel pipe described in the utility model；
Fig. 2 is the structural schematic diagram of cold drawing die described in the utility model；
Fig. 3 is the A direction view in Fig. 2
In FIG. 1 to FIG. 3: 1, tube body, 2, reinforce convex ribs, 3, external mold, 4, plug, 5, sizing reduction section, 6, wall-reducting section, 7, fixed
Diameter section, 8, tube reducing mold core, 9, subtract wall mold core, 10, sizing mold core, 11, groove.
Specific embodiment:
With reference to the accompanying drawing, the specific embodiment of the utility model is described in detail.
Embodiment 1:
Automobile longitudinal distance rod seamless steel pipe as shown in Figure 1, including tube body 1 are located at circumferential on 1 inner wall of tube body
It is evenly equipped at least three reinforcement convex ribs 2 axially extending along tube body 1.
Be arranged on 1 inner wall of tube body of seamless steel pipe it is axial reinforce convex ribs 2, do not increasing seamless steel pipe by wall thickness and straight
Rigidity is further increased on the basis of diameter, so that the rigidity of seamless steel pipe be made to reach the rigidity requirement of trailing link, this nothing
Seam steel pipe can be used as trailing link, substantially reduce the weight of traditional trailing link.
The relationship of the thickness for reinforcing convex ribs 2 and 1 wall thickness of tube body is reinforced in the width and tube body 1 of 2 root of convex ribs
The relationship of circumference see the table below:
| Reinforce convex ribs thickness and tube body wall ratio | 0.8 | 0.9 | 1 | 1.2 |
| Reinforce convex ribs root width and tube body inner circle perimeter ratio | 1/20 | 1/17 | 1/15 | 1/10 |
By a large number of experiments, when the thickness for reinforcing convex ribs 2 is 0.8~1.2 times of 1 wall thickness of tube body and reinforces convex ribs 2
When portion's width is the 1/10~1/20 of 1 inner circle perimeter of tube body, the rigidity raising of seamless steel pipe is larger, and is easy to cold-drawn production.
As shown in Figure 1, the cross sectional shape for reinforcing convex ribs 2 is " V " shape, head is round and smooth, root and 1 inner wall fillet mistake of tube body
It crosses, is readily produced.
The quantity for reinforcing convex ribs 2 is five, and the thickness for reinforcing convex ribs 2 is equal to the wall thickness of tube body 1.
Since trailing link stress is complicated, there is longitudinal force also to have lateral force, therefore five reinforcement convex ribs 2 can be more effective
Ground lateral force resisting, increasing more convex ribs 2 of reinforcing can be such that production cost further increases, and can make due to more reinforcing convex ribs 2
Reinforcing 2 thickness of convex ribs reduces, and the practical increase to rigidity is limited, it is therefore preferable that five reinforcement convex ribs 2.
Embodiment 2:
A kind of cold drawing die as shown in Figures 2 and 3, for manufacturing seamless steel pipe described in embodiment 1, the cold drawing die packet
Include external mold 3 and plug 4, which is characterized in that offered on the external mold 3 through the cold drawn forming hole of external mold 3, cold drawn forming hole packet
Include the coaxially sizing reduction section 5, wall-reducting section 6 and the sizing section 7 that are successively connected, the sizing reduction section 5 and wall-reducting section 6 be to sizing section 7 by
The taper type hole of contracting is tapered, and 5 taper of sizing reduction section is greater than 6 taper of wall-reducting section, the sizing section 7 is cylindrical hole；The plug 4
Head be disposed with sizing reduction section 5, wall-reducting section 6 and the one-to-one tube reducing mold core 8 of sizing section 7, subtract wall mold core 9 and sizing
Mold core 10, tube reducing mold core 8 be cylindrical body, subtract wall mold core 9 be truncated cone, sizing mold core 10 be cylindrical body, tube reducing mold core 8 it is straight
Diameter is less than the diameter of sizing mold core 10, subtracts wall mold core 9 and links up smoothly between tube reducing mold core 8 and sizing mold core 10, plug 4
Gap is provided between head and cold drawn forming hole, gap size is determined by cold-drawn thickness of pipe wall, 4 head of plug be circumferentially evenly equipped with to
Few three grooves 11 axially extending along plug 4, which extends to from the end of sizing mold core 10 subtracts wall mold core 9 and tube reducing
The intersection of mold core 8, depth of the groove 11 on sizing mold core 10 are the one of the difference of 8 diameter of sizing mold core 10 and tube reducing mold core
Half, groove 11 is subtracting the depth on wall mold core 9 as the taper for subtracting wall mold core 9 is gradually reduced.
By subtracting setting groove 11 on wall mold core 9 and sizing mold core 10 on 4 head of plug, to make seamless after cold-drawn
Integrally formed with convex ribs 2 are reinforced on steel pipe inner wall, reinforce the rigidity that convex ribs 2 effectively increase seamless steel pipe, uses this in this way
Seamless steel pipe is planted when manufacturing trailing link, can reduce the weight of trailing link.
The axial length ratio of the sizing reduction section 5, wall-reducting section 6 and sizing section 7 is 10:7:3.
By sizing reduction section 5 then 1.1 times of reduced outer diameter to aimed dia~1.2 times are passed through to the hollow materials in the tube of cold-drawn
Wall-reducting section 6 squeezes pipe thickness to target thickness, and in tube body 1 further by reduced outer diameter to aimed dia
It is squeezed out on wall and reinforces convex ribs 2, the axial length ratio of sizing reduction section 5, wall-reducting section 6 and sizing section 7 is set as 10:7:3, can be passed through
Sizing reduction section 5 heats tube body 1, to can be easier to squeeze to be formed in wall-reducting section 6 to reinforce convex ribs 2.
The principles and effects of the invention, and the embodiment that part uses only is illustrated in above-described embodiment,
And is not intended to limit the present invention；It should be pointed out that for those of ordinary skill in the art, not departing from the invention structure
Under the premise of think of, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (2)
1. a kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe, which is characterized in that including external mold (3) and plug (4),
It is offered on the external mold (3) through the cold drawn forming hole of external mold (3), cold drawn forming hole includes the sizing reduction section being coaxially successively connected
(5), wall-reducting section (6) and sizing section (7), the sizing reduction section (5) and wall-reducting section (6) are the cone gradually tapered up to sizing section (7)
Platform shape hole, and sizing reduction section (5) taper is greater than wall-reducting section (6) taper, the sizing section (7) is cylindrical hole；The head of the plug (4)
Portion be disposed with sizing reduction section (5), wall-reducting section (6) and sizing section (7) correspondingly tube reducing mold core (8), subtract wall mold core (9)
With sizing mold core (10), tube reducing mold core (8) is cylindrical body, and subtracting wall mold core (9) is truncated cone, and sizing mold core (10) is cylinder
Body, the diameter of tube reducing mold core (8) are less than the diameter of sizing mold core (10), subtract wall mold core (9) link up smoothly in tube reducing mold core (8) and
Between sizing mold core (10), it is provided with gap between the head and cold drawn forming hole of plug (4), gap size is by cold-drawn thickness of pipe wall
It determines, plug (4) head is circumferentially evenly equipped at least three grooves (11) axially extending along plug (4), and the groove (11) is from calmly
The end of diameter mold core (10) extends to the intersection for subtracting wall mold core (9) and tube reducing mold core (8), and groove (11) is in sizing mold core (10)
On depth be sizing mold core (10) and tube reducing mold core (8) diameter difference half, groove (11) subtracting the depth on wall mold core (9)
Degree is gradually reduced with the taper for subtracting wall mold core (9).
2. cold drawing die according to claim 1, which is characterized in that the sizing reduction section (5), wall-reducting section (6) and sizing section
(7) axial length ratio is 10:7:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820939455.3U CN208728336U (en) | 2018-06-19 | 2018-06-19 | A kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820939455.3U CN208728336U (en) | 2018-06-19 | 2018-06-19 | A kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe |
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| Publication Number | Publication Date |
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| CN208728336U true CN208728336U (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820939455.3U Active CN208728336U (en) | 2018-06-19 | 2018-06-19 | A kind of cold drawing die of automobile longitudinal distance rod seamless steel pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500108A (en) * | 2020-10-19 | 2021-10-15 | 浙江晶日科技股份有限公司 | Multifunctional rod corner drawing die, cold drawing die set and cold drawing method |
| CN114102071A (en) * | 2021-12-01 | 2022-03-01 | 浙江中达新材料股份有限公司 | Production process of inner-groove austenitic stainless steel seamless steel pipe for efficient heat exchanger |
| CN115446245A (en) * | 2022-10-12 | 2022-12-09 | 重庆建设工业(集团)有限责任公司 | Core rod for radial forging and drawing of hollow shaft parts and use method thereof |
-
2018
- 2018-06-19 CN CN201820939455.3U patent/CN208728336U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500108A (en) * | 2020-10-19 | 2021-10-15 | 浙江晶日科技股份有限公司 | Multifunctional rod corner drawing die, cold drawing die set and cold drawing method |
| CN114102071A (en) * | 2021-12-01 | 2022-03-01 | 浙江中达新材料股份有限公司 | Production process of inner-groove austenitic stainless steel seamless steel pipe for efficient heat exchanger |
| CN115446245A (en) * | 2022-10-12 | 2022-12-09 | 重庆建设工业(集团)有限责任公司 | Core rod for radial forging and drawing of hollow shaft parts and use method thereof |
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