CN105736622A - Laser welded shock absorber piston rod assembly - Google Patents
Laser welded shock absorber piston rod assembly Download PDFInfo
- Publication number
- CN105736622A CN105736622A CN201610322679.5A CN201610322679A CN105736622A CN 105736622 A CN105736622 A CN 105736622A CN 201610322679 A CN201610322679 A CN 201610322679A CN 105736622 A CN105736622 A CN 105736622A
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- CN
- China
- Prior art keywords
- ladder
- sheet
- piston
- external diameter
- restoring
- 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.)
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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 discloses a laser welded shock absorber piston rod assembly. The shock absorber piston rod assembly is provided with a piston rod, wherein the piston rod is provided with a restorable constraining seat, a restorable sheet, a piston sleeved with a piston ring, a circulation sheet, a spring sheet, an adjusting gasket and a round pad in sequence along the axial direction; the restorable constraining seat is in a stepped ring shape in the axial direction, sleeves a non-user end, namely a piston end, of the piston rod and is connected with the piston rod in a laser welding manner; and axial constraint and axial pre-loaded pressure are applied to the circulation sheet, the spring sheet, the adjusting gasket and the round pad through the restorable constraining seat. With the adoption of the axial stepped ring shape of the restorable constraining seat, the combination of a stepped diameter and height difference forms graded constraint on axial warping deformation of the restorable sheet, so that the restorable sheet forms graded variable axial deformation rigidity and graded control on the difficult degree of change of circulation area of a restorable valve system is realized, and furthermore, the complexity degree of adjusting a restorable damping force is simplified.
Description
Technical field
The invention belongs to automobile vibration damper piston rod field, be specifically related to a kind of can the damper piston-rod assembly of laser weld, specifically use the solderable damper piston-rod assembly that laser weld links together piston rod with piston and valve system.
Background technology
Damper piston-rod assembly includes piston rod, piston, recuperation valve system, resetting valve system etc., is the important component part of shock absorber of automobile suspension, and therefore the performance of vibroshock is had important impact by the structure of piston-rod assembly and connected mode.Present stage vibroshock is when producing, piston, recuperation valve system, resetting valve system etc. are installed on piston rod, commonly used is threaded adds locking mode, its shortcoming is that piston rod " non-user end (both piston end) " structure is complicated, and the manufacture difficulty especially for the hollow piston rod of ride control shock absorber strengthens.It addition, the resetting valve system commonly used multi-disc thickness spring leaf different with diameter combines, thus the uncertainty of spring leaf combination adds the complexity of recovery damping force adjustment.
Summary of the invention
The invention purpose be to provide a kind of can the damper piston-rod assembly of laser weld, this piston-rod assembly can be linked together piston rod by the mode of laser weld with piston and valve system, and this piston-rod assembly is specifically designed in shock absorber of automobile suspension.By changing piston rod and piston and valve system attachment structure and adopting laser weld, simplify piston rod construction and Joining Technology；By changing the way of restraint restoring valve block, reduce resetting valve system number of parts, simplify the complexity of recovery damping force adjustment simultaneously.
The technical scheme that the invention adopts is:
A kind of can the damper piston-rod assembly of laser weld, there is piston rod (1), piston rod (1) is sequentially provided with recovery constraint seat (5) along its axial direction, restores sheet (4), is set with the piston (2) of piston ring (3), circulation sheet (6), spring leaf (7), adjustment pad (8) and planchet (9)；Described recovery constraint seat (5) is axially stepped annular along it, described recovery constraint seat (5) is sleeved on non-user end both piston ends of piston rod, and adopt laser weld mode and piston rod to link together, by restoring constraint seat (5), circulation sheet (6), spring leaf (7), adjustment pad (8) and planchet (9) are implemented axial constraint and applied axial precompression.
Described a kind of can the damper piston-rod assembly of laser weld, described recovery constraint seat (5) is that high-density iron-base powder metallurgy material restores constraint seat (5), and wherein the density of ferrous based powder metallurgical material is not less than 7.4g/cm3。
Described a kind of can the damper piston-rod assembly of laser weld, described piston (2) is ferrous based powder metallurgical material piston (2).
Described a kind of can the damper piston-rod assembly of laser weld, described recovery constraint seat (5) is axially step ladder circular ring shape structure, there are four layers of flight, it is followed successively by the first ladder (5.1), the second ladder (5.2), the 3rd ladder (5.3) and fourth order ladder (5.4) from the piston end of piston rod, the external diameter of described first ladder (5.1) is Φ d1, the external diameter of the second ladder (5.2) is Φ d2, the external diameter of the 3rd ladder (5.3) is Φ d3, the external diameter of fourth order ladder (5.4) is Φ d4, described Φ d1 > Φ d2 > Φ d3 > Φ d4.
Described a kind of can the damper piston-rod assembly of laser weld, the height of described fourth order ladder (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, described h3 > h2 > h1.
A kind of utilize described can the damper piston-rod assembly of laser weld resetting valve system flow area is changed complexity have stage control method,
Initial stage, by the circular surfaces constraint restoring fourth order ladder (5.4) in constraint seat (5), restoring sheet (4), to produce the internal diameter in buckling deformation region under the effect of its pressure at both sides difference with the external diameter of fourth order ladder (5.4) be Φ d4, and the external diameter in buckling deformation region be the external diameter of recovery sheet (4)；The amount allowing buckling deformation is subject to the restriction of fourth order ladder (5.4) height h1；
When restoring sheet (4) pressure at both sides difference and continuing to increase, continuation is increased by the buckling deformation region restoring sheet (4) under the effect of pressure differential, circular surfaces and fourth order ladder (5.4) constraint by the 3rd ladder (5.3), the external diameter restoring same 3rd ladder (5.3) of internal diameter that sheet (4) produces buckling deformation region is Φ d3, and the external diameter in buckling deformation region is the external diameter restoring sheet (4)；The amount allowing buckling deformation is subject to the restriction of fourth order ladder (5.4) height h1 and the three ladder (5.3) height h2 sum；
When restoring sheet (4) pressure at both sides difference and again continuing with increase, continuation is increased by the buckling deformation region restoring sheet (4) under the effect of pressure differential, by the circular surfaces of the second ladder (5.2) in former constraint seat (5), 3rd ladder (5.3) and fourth order ladder (5.4) constraint, the external diameter restoring same second ladder (5.2) of internal diameter that sheet (4) produces buckling deformation region is Φ d2, the external diameter in buckling deformation region is the external diameter restoring sheet (4), the amount allowing buckling deformation is subject to fourth order ladder (5.4) height h1, the restriction of the 3rd ladder (5.3) height h2 and the second ladder (5.2) height h1 sum；By that analogy；
Finally utilize Elasticity and finite element analysis theoretical, realize the level that has to restoring sheet (4) to retrain, recovery sheet (4) is made to be formed with the axial deformation rigidity that level is variable, both realized resetting valve system flow area change complexity and had a grade control, it is achieved the adjustment to recovery damping force.
The invention has the advantages that
Restore constraint seat and adopt high-density iron-base powdered metallurgical material, both can simplify this piston-rod assembly structure, manufacturing cost can be reduced again；Using method for laser welding that recovery is retrained seat to weld together with piston rod, commissure is smooth, and welding quality is higher, speed；Restoring constraint seat adopts high-density iron-base powdered metallurgical material to be easily achieved axial step shape.
The axial buckling deformation of recovery sheet is formed with level constraint by the combination of step diameter with difference in height by the constraint seat that restores of axial step shape, recovery sheet is made to be formed with the axial deformation rigidity that level is variable, both realize resetting valve system flow area change complexity and had a grade control, carry out simplifying the complexity of recovery damping force adjustment.The recovery constraint seat of axial step shape decreases resetting valve system and sends out the quantity of sheet, simplifies valve architecture, advantageously reduces manufacturing cost.
Accompanying drawing explanation
Fig. 1 is that the invention is a kind of can the structural representation of damper piston-rod assembly of laser weld.
Fig. 2 is the structural representation restoring constraint seat shown in Fig. 1.
Detailed description of the invention
A kind of as shown in Figure 1 can the damper piston-rod assembly of laser weld, there is piston rod 1, piston rod 1 is sequentially provided with recovery constraint seat 5 along its axial direction, restores sheet 4, is set with the piston 2 of piston ring 3, the sheet 6 that circulates, spring leaf 7, adjustment pad 8 and planchet 9；The described constraint seat 5 that restores is axially stepped annular along it, the described constraint seat 5 that restores is sleeved on non-user end both piston ends of piston rod, and adopt laser weld mode and piston rod to link together, so, by restoring constraint seat 5, circulation sheet 6, spring leaf 7, the adjustment parts such as pad 8 and planchet 9 are implemented axial constraint, and axially-aligned is fixing on the piston rod in order, circulation sheet 6, spring leaf 7, the adjustment parts such as pad 8 and planchet 9 are applied axial precompression simultaneously.And adopt method for laser welding, can reduce under the effect of Thermal Cycle, the scope of the heat affected area of weld seam 10 two layers of material, improves plasticity and the toughness at shock absorber piston rod weld seam 10 two ends, thus reducing weld defect.
Wherein piston and recovery constraint seat 5 all use material to be the powdered metallurgical material of iron-based, it is preferable that described recovery constraint seat 5 is that high-density iron-base powder metallurgy material restores constraint seat 5, and wherein the density of ferrous based powder metallurgical material is not less than 7.4g/cm3.Described piston 2 is ferrous based powder metallurgical material piston 2.Piston rod 1 uses material to be 45# steel.
As shown in Figure 2 more preferably, the described constraint seat 5 that restores is axially step ladder circular ring shape structure, there are four layers of flight, it is followed successively by the first ladder the 5.1, second ladder the 5.2, the 3rd ladder 5.3 and fourth order ladder 5.4 from the piston end of piston rod, the external diameter of described 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 external diameter of fourth order ladder 5.4 is Φ d4, described Φ d1 > Φ d2 > Φ d3 > Φ d4.The height of described fourth order ladder 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, described h3 > h2 > h1.
Restoring constraint seat 5 is axially stairstepping, the axial buckling deformation restoring sheet is formed with level constraint with combining of difference in height by step diameter, recovery sheet is made to be formed with the axial deformation rigidity that level is variable, both realize resetting valve system flow area change complexity and had a grade control, carry out simplifying the complexity of recovery damping force adjustment.As in figure 2 it is shown, the initial stage is by the constraint restoring constraint seat Φ d4 circular surfaces, recovery sheet is at the poor (p of its pressure at both sidesRight>pLeft) the lower region producing buckling deformation of effect be internal diameter is Φ d4, external diameter is the annulus restoring sheet external diameter；The amount allowing deformation warpage is subject to restoring the restriction of constraint seat h1；When restoring the poor (p of sheet pressure at both sidesRight>pLeft) continue to increase, then continuation is increased by its deformation warpage, but due to the restriction of h1, then deformation is subject to restoring the constraint of constraint seat Φ d3 circular surfaces, deflection is subject to the restriction of h1+h2 sum, and the region of generation buckling deformation is internal diameter is Φ d3, and external diameter is the annulus restoring sheet external diameter；By that analogy (left and right is the left and right directions in diagram).
From Elasticity and finite element analysis theory, the complexity restoring the axial warpage of sheet is closely related with the ratio of its internal-and external diameter, both its deformation rigidity was the function of the ratio of its internal-and external diameter, therefore the level that has that can be realized restoring sheet by notch cuttype circular ring structure is retrained, form it into the axial deformation rigidity that level is variable, both realized resetting valve system flow area change complexity and had a grade control, it is achieved the adjustment to recovery damping force.
Claims (6)
1. one kind can the damper piston-rod assembly of laser weld, it is characterized in that, there is piston rod (1), piston rod (1) is sequentially provided with recovery constraint seat (5) along its axial direction, restores sheet (4), is set with the piston (2) of piston ring (3), circulation sheet (6), spring leaf (7), adjustment pad (8) and planchet (9)；Described recovery constraint seat (5) is axially stepped annular along it, described recovery constraint seat (5) is sleeved on non-user end both piston ends of piston rod, and adopt laser weld mode and piston rod to link together, by restoring constraint seat (5), circulation sheet (6), spring leaf (7), adjustment pad (8) and planchet (9) are implemented axial constraint and applied axial precompression.
2. a kind of as claimed in claim 1 can the damper piston-rod assembly of laser weld, it is characterized in that, described recovery retrains seat (5) for high-density iron-base powder metallurgy material recovery constraint seat (5), and wherein the density of ferrous based powder metallurgical material is not less than 7.4g/cm3。
3. a kind of as claimed in claim 1 can the damper piston-rod assembly of laser weld, it is characterised in that described piston (2) is ferrous based powder metallurgical material piston (2).
4. a kind of as claimed in claim 1 can the damper piston-rod assembly of laser weld, it is characterized in that, described recovery constraint seat (5) is axially step ladder circular ring shape structure, there are four layers of flight, it is followed successively by the first ladder (5.1) from the piston end of piston rod, second ladder (5.2), 3rd ladder (5.3) and fourth order ladder (5.4), the external diameter of described first ladder (5.1) is Φ d1, the external diameter of the second ladder (5.2) is Φ d2, the external diameter of the 3rd ladder (5.3) is Φ d3, the external diameter of fourth order ladder (5.4) is Φ d4, described Φ d1 > Φ d2 > Φ d3 > Φ d4.
5. a kind of as claimed in claim 4 can the damper piston-rod assembly of laser weld, it is characterized in that, the height of described fourth order ladder (5.4) is h1, and the height of the 3rd ladder (5.3) is h2, the height of the second ladder (5.2) is h3, described h3 > h2 > h1.
6. one kind utilize as described in any one of claim 1-5 can laser weld damper piston-rod assembly to resetting valve system flow area change complexity have stage control method, it is characterised in that
Initial stage, by the circular surfaces constraint restoring fourth order ladder (5.4) in constraint seat (5), restoring sheet (4), to produce the internal diameter in buckling deformation region under the effect of its pressure at both sides difference with the external diameter of fourth order ladder (5.4) be Φ d4, and the external diameter in buckling deformation region be the external diameter of recovery sheet (4)；The amount allowing buckling deformation is subject to the restriction of fourth order ladder (5.4) height h1；
When restoring sheet (4) pressure at both sides difference and continuing to increase, continuation is increased by the buckling deformation region restoring sheet (4) under the effect of pressure differential, circular surfaces and fourth order ladder (5.4) constraint by the 3rd ladder (5.3), the external diameter restoring same 3rd ladder (5.3) of internal diameter that sheet (4) produces buckling deformation region is Φ d3, and the external diameter in buckling deformation region is the external diameter restoring sheet (4)；The amount allowing buckling deformation is subject to the restriction of fourth order ladder (5.4) height h1 and the three ladder (5.3) height h2 sum；
When restoring sheet (4) pressure at both sides difference and again continuing with increase, continuation is increased by the buckling deformation region restoring sheet (4) under the effect of pressure differential, by the circular surfaces of the second ladder (5.2) in former constraint seat (5), 3rd ladder (5.3) and fourth order ladder (5.4) constraint, the external diameter restoring same second ladder (5.2) of internal diameter that sheet (4) produces buckling deformation region is Φ d2, the external diameter in buckling deformation region is the external diameter restoring sheet (4), the amount allowing buckling deformation is subject to fourth order ladder (5.4) height h1, the restriction of the 3rd ladder (5.3) height h2 and the second ladder (5.2) height h1 sum；By that analogy；
Finally utilize Elasticity and finite element analysis theoretical, realize the level that has to restoring sheet (4) to retrain, recovery sheet (4) is made to be formed with the axial deformation rigidity that level is variable, both realized resetting valve system flow area change complexity and had a grade control, it is achieved the adjustment to recovery damping force.
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 true CN105736622A (en) | 2016-07-06 |
| CN105736622B CN105736622B (en) | 2017-10-10 |
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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 |
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| Country | Link |
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| CN (1) | CN105736622B (en) |
Cited By (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 |
Cited By (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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| Publication number | Publication date |
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| CN105736622B (en) | 2017-10-10 |
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Granted publication date: 20171010 Termination date: 20180516 |