CN105736622B - It is a kind of can laser welding damper piston-rod assembly - Google Patents
It is a kind of can laser welding damper piston-rod assembly Download PDFInfo
- Publication number
- CN105736622B CN105736622B CN201610322679.5A CN201610322679A CN105736622B CN 105736622 B CN105736622 B CN 105736622B CN 201610322679 A CN201610322679 A CN 201610322679A CN 105736622 B CN105736622 B CN 105736622B
- Authority
- CN
- China
- Prior art keywords
- piston
- constraint
- ladder
- seat
- laser welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3228—Constructional features of connections between pistons and piston rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
Abstract
The invention disclose it is a kind of can laser welding damper piston-rod assembly, piston, circulation piece, spring leaf, adjust pad and the planchet for restoring constraint seat, restoring piece, being set with piston ring are sequentially provided with along its axial direction with piston rod, on piston rod；The constraint seat that restores is axially stepped annular along it, the constraint cover for seat of restoring is mounted in the non-user end of piston rod both piston end, and linked together using laser welding mode with piston rod, by restoring constraint seat to circulation piece, spring leaf, adjust pad and planchet implementation axial constraint and applying axial precompression.By the stairstepping for restoring constraint seat axial direction, the combination of step diameter and difference in height is formed with level constraint to the axial buckling deformation for restoring piece, recovery piece is set to be formed with the variable axial deformation rigidity of level, both realized that resetting valve system flow area change complexity had a grade control, and then simplified the complexity of recovery damping force adjustment.
Description
Technical field
The invention belongs to automobile vibration damper piston rod field, and in particular to it is a kind of can laser welding damper piston
Bar assembly, it is specifically using laser welding that piston rod and solderable shock absorber piston rod that piston and valve system link together is total
Into.
Background technology
Damper piston-rod assembly includes piston rod, piston, recuperation valve system, resetting valve system etc., is shock absorber of automobile suspension
Important component, therefore the structure and connected mode of piston-rod assembly have important influence to the performance of shock absorber.It is existing
Stage shock absorber is installed to piston, recuperation valve system, resetting valve system etc. on piston rod in production, generally uses screw thread
Connection plus locking mode, it has the disadvantage that piston rod " non-user end (both piston ends) " is complicated, particularly can for damping
The manufacture difficulty of the hollow piston rod of shock absorber is adjusted to increase.In addition, resetting valve system is generally different with diameter using multi-disc thickness
Spring leaf is combined, thus the uncertainty of spring leaf combination adds the complexity of recovery damping force adjustment.
The content of the invention
The invention purpose be to provide it is a kind of can laser welding damper piston-rod assembly, the piston-rod assembly can lead to
The mode for crossing laser welding links together piston rod with piston and valve system, and the piston-rod assembly subtracts dedicated for automotive suspension
Shake in device.By changing piston rod and piston and valve system attachment structure and using laser welding, simplify piston rod construction and connection
Technique；The way of restraint of valve block is restored by changing, resetting valve system number of parts is reduced, while simplifying recovery damping force adjustment
Complexity.
The technical scheme that the invention is used for：
It is a kind of can laser welding damper piston-rod assembly, with piston rod (1), along its axial direction side on piston rod (1)
Constraint seat (5), the piston (2) for restoring piece (4), being set with piston ring (3), circulation piece (6), spring leaf are restored to being sequentially provided with
(7), adjust pad (8) and planchet (9)；The constraint seat (5) that restores is axially stepped annular along it, and the recovery constrains seat
(5) non-user end both piston ends, and being linked together using laser welding mode with piston rod of piston rod are sleeved on, by multiple
Original constraint seat (5) implements axial constraint to circulation piece (6), spring leaf (7), adjust pad (8) and planchet (9) and applies axially pre-
Pressure.
It is described it is a kind of can laser welding damper piston-rod assembly, the recovery constraint seat (5) is high-density iron-base
Powder metallurgy material restores constraint seat (5), and the wherein density of ferrous based powder metallurgical material is not less than 7.4g/cm3。
It is described it is a kind of can laser welding damper piston-rod assembly, the piston (2) is ferrous based powder metallurgical material
Piston (2).
It is described it is a kind of can laser welding damper piston-rod assembly, the recovery constraint seat (5) is axially ladder circle
Cyclic structure, with four layers of flight, the first ladder (5.1), the second ladder (5.2), are followed successively by from the piston end of piston rod
Three ladders (5.3) and fourth order are terraced (5.4), and the external diameter of first ladder (5.1) is Φ d1, the external diameter of the second ladder (5.2)
For Φ d2, the external diameter of the 3rd ladder (5.3) is Φ d3, and the external diameter of fourth order ladder (5.4) is Φ d4, the Φ d1>Φd2>Φd3
>Φd4。
It is described it is a kind of can laser welding damper piston-rod assembly, the height of the fourth order terraced (5.4) is h1, the
The height of three ladders (5.3) is h2, and the height of the second ladder (5.2) is h3, the h3>h2>h1.
It is a kind of using it is described can the damper piston-rod assembly of laser welding difficulty or ease are changed to resetting valve system flow area
Degree has a grade control method,
At initial stage, constrained by the circular surfaces for restoring fourth order terraced (5.4) in constraint seat (5), restore piece (4) in its pressure at both sides
The internal diameter in generation buckling deformation region is outside Φ d4, buckling deformation region with the external diameter of fourth order terraced (5.4) in the presence of difference
Footpath is the external diameter for restoring piece (4)；The amount of buckling deformation is allowed to be limited by fourth order ladder (5.4) height h1；
When restoring the difference continuation increase of piece (4) pressure at both sides, effect of the buckling deformation region in pressure differential of piece (4) is restored
It is lower to continue to increase, constrained by the circular surfaces and fourth order terraced (5.4) of the 3rd ladder (5.3), restore piece (4) and produce buckling deformation
The internal diameter in region is Φ d3 with the external diameter of the 3rd ladder (5.3), and the external diameter in buckling deformation region is the external diameter for restoring piece (4)；Permit
Perhaps the amount of buckling deformation is limited by fourth order ladder (5.4) height h1 with the 3rd ladder (5.3) height h2 sums；
When recovery piece (4) pressure at both sides difference again continues to increase, the buckling deformation region of piece (4) is restored in pressure differential
It will continue to increase under effect, by the circular surfaces of the second ladder (5.2), the 3rd ladder (5.3) and fourth order ladder in former constraint seat (5)
(5.4) constrain, the external diameter for restoring same second ladder (5.2) of internal diameter that piece (4) produces buckling deformation region is Φ d2, buckling deformation
The external diameter in region is the external diameter for restoring piece (4), it is allowed to which the amount of buckling deformation is by fourth order ladder (5.4) height h1, the 3rd ladder
(5.3) limitation of height h2 and the second ladder (5.2) height h1 sums；By that analogy；
Finally theoretical using Elasticity and finite element analysis, realize has level constraint to recovery piece (4), makes recovery piece
(4) the variable axial deformation rigidity of level is formed with, had both realized that resetting valve system flow area change complexity had a grade control, and had realized
Adjustment to recovery damping force.
The invention has the advantages that：
Restore constraint seat and use high-density iron-base powdered metallurgical material, can both simplify this piston-rod assembly structure, again may be used
To reduce manufacturing cost；Constraint seat will be restored using method for laser welding with piston rod to weld together, commissure is smooth, welding
Quality is higher, speed；Restore constraint seat and axial step shape is easily achieved using high-density iron-base powdered metallurgical material.
The recovery constraint seat of axial step shape is by the combination of step diameter and difference in height to restoring the axial warpage of piece
Level constraint is formed with, recovery piece is formed with the variable axial deformation rigidity of level, had both realized that resetting valve system flow area became
Changing complexity has a grade control, simplify the complexity of recovery damping force adjustment.The recovery constraint seat of axial step shape
The quantity that resetting valve system sends out piece is decreased, valve architecture is simplified, advantageously reduces manufacturing cost.
Brief description of the drawings
Fig. 1 be the invention it is a kind of can laser welding damper piston-rod assembly structural representation.
Fig. 2 is the structural representation that constraint seat is restored shown in Fig. 1.
Embodiment
As shown in Figure 1 it is a kind of can laser welding damper piston-rod assembly, with piston rod 1, along its axle on piston rod 1
It is sequentially provided with to direction and restores constraint seat 5, the piston 2 for restoring piece 4, being set with piston ring 3, circulation piece 6, spring leaf 7, adjusting pad
Piece 8 and planchet 9；The constraint seat 5 that restores is axially stepped annular along it, and the recovery constraint seat 5 is sleeved on the non-of piston rod
User terminal both piston ends, and being linked together using laser welding mode with piston rod, so, by restoring the constraint convection current of seat 5
The parts such as logical piece 6, spring leaf 7, adjust pad 8 and planchet 9 implement axial constraint, and axially arrangement is fixed on piston in order
On bar, while applying axial precompression to parts such as circulation piece 6, spring leaf 7, adjust pad 8 and planchets 9.And use laser
Welding method, can reduce in the presence of Thermal Cycle, the scope of the heat affected area of the two layers of material of weld seam 10, improve shock absorber
The plasticity and toughness at the two ends of piston rod weld seam 10, so as to reduce weld defect.
Wherein piston and recovery constraint seat 5 is using the powdered metallurgical material that material is iron-based, it is preferable that the recovery is about
Beam seat 5 is that high-density iron-base powder metallurgy material restores constraint seat 5, and the density of wherein ferrous based powder metallurgical material is not less than
7.4g/cm3.The piston 2 is ferrous based powder metallurgical material piston 2.Piston rod 1 is 45# steel using material.
As shown in Figure 2 it is further preferable that the constraint seat 5 that restores is axially ladder circle cyclic structure, with four layers of ladder
Layer, the first ladder 5.1, the second ladder 5.2, the 3rd ladder 5.3 and fourth order ladder 5.4, institute are followed successively by from the piston end of piston rod
The external diameter for stating the first ladder 5.1 is Φ d1, and the external diameter of the second ladder 5.2 is Φ d2, and the external diameter of the 3rd ladder 5.3 is Φ d3, the
The external diameter of four-step 5.4 is Φ d4, the Φ d1>Φd2>Φd3>Φd4.The height of the fourth order ladder 5.4 is h1, the 3rd
The height of ladder 5.3 is h2, and the height of the second ladder 5.2 is h3, the h3>h2>h1.
It is axially stairstepping to restore constraint seat 5, and the combination of step diameter and difference in height becomes to the axial warpage for restoring piece
Shape is formed with level constraint, recovery piece is formed with the variable axial deformation rigidity of level, has both realized that resetting valve system flow area changed
Complexity has a grade control, simplify the complexity of recovery damping force adjustment.As shown in Fig. 2 initial stage is constrained seat by recovery
The constraint of Φ d4 circular surfaces, restores piece in the poor (p of its pressure at both sidesIt is right>pIt is left) the lower region for producing buckling deformation of effect is that internal diameter is
Φ d4, external diameter is the annulus for restoring piece external diameter；The amount for deforming warpage is allowed to be limited by constraint seat h1 is restored；When recovery piece two
Poor (the p of lateral pressureIt is right>pIt is left) continue to increase, then it deforms warpage and will continue to increase, but is due to h1 limitation, then deforms by multiple
The constraint of original constraint seat Φ d3 circular surfaces, deflection is limited by h1+h2 sums, and the region for producing buckling deformation is that internal diameter is
Φ d3, external diameter is the annulus for restoring piece external diameter；By that analogy (left and right is the left and right directions in diagram).
It is theoretical from Elasticity and finite element analysis, restore the ratio between complexity and its internal-and external diameter of the axial warpage of piece
Closely related, both its deformation rigidity was the function of the ratio between its internal-and external diameter, therefore can be realized to multiple by stepped circular ring structure
Former piece has level constraint, forms it into the variable axial deformation rigidity of level, has both realized that resetting valve system flow area changed difficulty or ease
Degree has a grade control, realizes the adjustment to recovery damping force.
Claims (4)
1. it is a kind of can laser welding damper piston-rod assembly, it is characterised in that with piston rod (1), edge on piston rod (1)
Its axial direction be sequentially provided with restore constraint seat (5), restore piece (4), be set with piston ring (3) piston (2), circulation piece (6),
Spring leaf (7), adjust pad (8) and planchet (9)；The recovery constraint seat (5) is axially stepped annular along it, and the recovery is about
Beam seat (5) is sleeved on the non-user end i.e. piston end of piston rod, and is linked together using laser welding mode with piston rod, leads to
Recovery constraint seat (5) is crossed to implement axial constraint to circulation piece (6), spring leaf (7), adjust pad (8) and planchet (9) and apply axle
To precompression；The constraint seat (5) that restores has four layers of flight, from the piston end of piston rod be followed successively by the first ladder (5.1),
Second ladder (5.2), the 3rd ladder (5.3) and fourth order are terraced (5.4), and the external diameter of first ladder (5.1) is Φ d1, second
The external diameter of ladder (5.2) is Φ d2, and the external diameter of the 3rd ladder (5.3) is Φ d3, and the external diameter of fourth order ladder (5.4) is Φ d4, institute
State Φ d1>Φd2>Φd3>Φd4.
2. it is as claimed in claim 1 it is a kind of can laser welding damper piston-rod assembly, it is characterised in that the recovery is about
Beam seat (5) is that high-density iron-base powder metallurgy material restores constraint seat (5), and the density of wherein ferrous based powder metallurgical material is not less than
7.4g/cm3。
3. it is as claimed in claim 1 it is a kind of can laser welding damper piston-rod assembly, it is characterised in that the piston
(2) it is ferrous based powder metallurgical material piston (2).
4. it is as claimed in claim 1 it is a kind of can laser welding damper piston-rod assembly, it is characterised in that the fourth order
The height of terraced (5.4) is h1, and the height of the 3rd ladder (5.3) is h2, and the height of the second ladder (5.2) is h3, the h3>h2>
h1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322679.5A CN105736622B (en) | 2016-05-16 | 2016-05-16 | It is a kind of can laser welding damper piston-rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322679.5A CN105736622B (en) | 2016-05-16 | 2016-05-16 | It is a kind of can laser welding damper piston-rod assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736622A CN105736622A (en) | 2016-07-06 |
| CN105736622B true CN105736622B (en) | 2017-10-10 |
Family
ID=56256091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610322679.5A Expired - Fee Related CN105736622B (en) | 2016-05-16 | 2016-05-16 | It is a kind of can laser welding damper piston-rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736622B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673398A (en) * | 2020-05-29 | 2020-09-18 | 锦州万友机械部件有限公司 | Process for machining hollow T-shaped piston rod of automobile shock absorber |
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|---|---|---|---|---|
| DE10038971A1 (en) * | 2000-08-10 | 2002-02-28 | Mannesmann Sachs Ag | Method for adjusting throttle effect of valve,, e.g. in hydraulic shock absorber, comprises heating throttle channels using laser beam, altering effective cross-section of channel |
| CN2929333Y (en) * | 2006-07-21 | 2007-08-01 | 万向钱潮股份有限公司 | Novel structure shock damper piston valve using reset spring base |
| CN201891789U (en) * | 2010-09-16 | 2011-07-06 | 浙江万向系统有限公司 | Novel damper combination valve assembly |
| CN202500945U (en) * | 2012-04-11 | 2012-10-24 | 瑞安市大路减震器有限公司 | Shock absorber piston assembly |
| CN203656017U (en) * | 2013-11-14 | 2014-06-18 | 浙江金波减震器制造有限公司 | Shock absorber piston assembly |
| CN104565176A (en) * | 2013-10-28 | 2015-04-29 | 株式会社万都 | Piston valve assembly for shock absorber |
| JP2015090180A (en) * | 2013-11-06 | 2015-05-11 | カヤバ工業株式会社 | Valve structure of buffer |
| CN205639433U (en) * | 2016-05-16 | 2016-10-12 | 辽宁工业大学 | But laser welding's shock absorber piston rod assembly |
-
2016
- 2016-05-16 CN CN201610322679.5A patent/CN105736622B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10038971A1 (en) * | 2000-08-10 | 2002-02-28 | Mannesmann Sachs Ag | Method for adjusting throttle effect of valve,, e.g. in hydraulic shock absorber, comprises heating throttle channels using laser beam, altering effective cross-section of channel |
| CN2929333Y (en) * | 2006-07-21 | 2007-08-01 | 万向钱潮股份有限公司 | Novel structure shock damper piston valve using reset spring base |
| CN201891789U (en) * | 2010-09-16 | 2011-07-06 | 浙江万向系统有限公司 | Novel damper combination valve assembly |
| CN202500945U (en) * | 2012-04-11 | 2012-10-24 | 瑞安市大路减震器有限公司 | Shock absorber piston assembly |
| CN104565176A (en) * | 2013-10-28 | 2015-04-29 | 株式会社万都 | Piston valve assembly for shock absorber |
| JP2015090180A (en) * | 2013-11-06 | 2015-05-11 | カヤバ工業株式会社 | Valve structure of buffer |
| CN203656017U (en) * | 2013-11-14 | 2014-06-18 | 浙江金波减震器制造有限公司 | Shock absorber piston assembly |
| CN205639433U (en) * | 2016-05-16 | 2016-10-12 | 辽宁工业大学 | But laser welding's shock absorber piston rod assembly |
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| Publication number | Publication date |
|---|---|
| CN105736622A (en) | 2016-07-06 |
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Granted publication date: 20171010 Termination date: 20180516 |