CN101941120B - Laser welding method of balance bracket and counterweight lead block - Google Patents
Laser welding method of balance bracket and counterweight lead block Download PDFInfo
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- CN101941120B CN101941120B CN 201010280008 CN201010280008A CN101941120B CN 101941120 B CN101941120 B CN 101941120B CN 201010280008 CN201010280008 CN 201010280008 CN 201010280008 A CN201010280008 A CN 201010280008A CN 101941120 B CN101941120 B CN 101941120B
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- counterweight
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Abstract
The invention discloses a laser welding method of a balance bracket and a counterweight lead block, which concretely comprises the following step of: welding the counterweight lead block onto the set position of the balance bracket by adopting laser as welding energy. In the laser welding method of the balance bracket and the counterweight lead block, the welding of the balance bracket and the counterweight lead block is realized by utilizing the characteristics of high laser energy density, small heat-affected zone, good controllability and small heat deformation of components in the welding process, and the connection reliability of the balance bracket and the counterweight lead block thereof is improved.
Description
Technical field
The present invention relates to the method for laser welding of a kind of balance bracket and counterweight lead.
Background technology
Balance bracket is the navigator critical piece, and in the course of the work, the internal balance support is done high speed rotating.In order to make balance bracket in operation process, keep dynamic balancing, need to arrange the counterweight lead at support, by regulating plumbous weight, the dynamic balancing degree is met the demands.
In the prior art, all adopt adhesive technology that balance bracket is connected with counterweight lead all around, still, existing adhesive technology randomness is larger, and bonding quality is difficult to control, thereby so that balance bracket is low with the reliability that the counterweight lead is connected.
Summary of the invention
For the problem that prior art exists, the object of the present invention is to provide a kind of balance bracket of the connection reliability that improves balance bracket and its counterweight lead and the method for laser welding of counterweight lead.
For achieving the above object, the method for laser welding of balance bracket of the present invention and counterweight lead is specially: adopt laser as welding energy, the counterweight lead is welded on the desired location of balance bracket.
Further, described laser is continuous laser or pulse laser.
Further, described balance bracket comprises main support, lower main support, and its both sides between the two are respectively arranged with two side stands that are fixedly connected, and are provided with two detents on the outer surface of these 4 side stands.
Further, described counterweight lead comprises face counterweight lead and side counterweight lead.
Further, described counterweight lead is fixedly welded in the described detent, and described side counterweight lead is welded on respectively on the side of described side stand, and described laser keeps vertical with solder side during positive welding.
Further, described counterweight lead adopts welding protection gas to improve welding quality in when welding, and welding protection gas is a kind of in nitrogen, argon gas, the helium or both mists.
Further, described balance bracket is made of titanium alloy ZTC4 or the 316L stainless steel of casting, and the material of described counterweight lead is pure plumbous Pb4.
Further, when being welded on the described side stand side, adopts described side counterweight lead special mould clamp, be provided with the locating surface suitable with the front and back sides of described balance bracket on this special mould clamp, be provided with the space, location between the side of this locating surface and 4 described side stands, described side counterweight lead is connected in this space, location and welds.
Further, also carry out the reverse side welding between described side counterweight lead and the described side stand, described laser is vertical with solder joint during the reverse side welding, and is 30 ° of angles with plumb line.
The method for laser welding of balance bracket of the present invention and counterweight lead utilizes laser energy density high, and the heat affected area is little, controllability is good, the little characteristics of member thermal deformation in the welding process realize the welding of balance bracket and counterweight lead, improve the connection reliability of balance bracket and its counterweight lead.
Description of drawings
Fig. 1 is balance bracket and counterweight lead structural representation;
Fig. 2 is the welding schematic diagram of face counterweight lead;
Fig. 3 is side counterweight lead welding schematic diagram;
Fig. 4 is side counterweight lead reverse side welding schematic diagram.
The specific embodiment
As shown in Figure 1, balance bracket in the method for laser welding of balance bracket of the present invention and counterweight lead, comprise main support 7, lower main support 9, its both sides between the two are respectively arranged with two side stands 8 that are fixedly connected, be provided with two detents 4 on the outer surface of these 4 side stands 8, it is used for solder side counterweight lead 2, on eight sides of positive anti-communism of side stand 8, and welding side counterweight lead 3.
The method for laser welding of balance bracket of the present invention and counterweight lead, welding used laser both can be continuous laser, also can be pulse laser.
In laser beam welding, weld metal can be vaporized, and has the part metal vapors to be ionized to plasma, and plasma has absorption and scattering process to laser, when the plasma density in weld seam front is intensive, laser is had shielding action.In order to suppress the laser beam welding applying plasma to the shielding action of laser, dispel the plasma in weld seam front by the side-blown protective gas.Select suitable side-blown shielding gas flow amount and side-blown angle, both can dispel the plasma that produces in the welding process, can prevent that again the material in the welding process is oxidized.Welding protection gas can be selected nitrogen, argon gas, helium among the present invention, or the mist of argon gas and helium, or other inert gases, as to welding the less demanding of surface quality, also can not apply protection gas.
In the present embodiment, for the welding of balance bracket and counterweight lead, selecting laser instrument is solid state laser.Process equipment is five axle frame-type machining robots, realizes the coordinate operation of laser instrument and machining robot by computer control.
The balance bracket material can be metal and metal alloy, has selected respectively cast titanium alloy ZTC4 in the present embodiment, and the 316L stainless steel.The material of face counterweight lead 2 and side counterweight lead 3 is elected pure plumbous Pb4 as.
Table 1 cast titanium alloy ZTC4 chemical composition
Table 2 Stainless steel 316 L chemical composition
The fusing point of table 3 cast titanium alloy ZTC4,316L stainless steel and Pb4
A: the welding of face counterweight lead
As shown in Figure 2, for the welding of face counterweight lead 2: two detents 4 are arranged in each face of side stand 8, be used for filling out putting face counterweight lead 2.Before the welding, face counterweight lead 2 is packed in the corresponding detent 4.In the welding process; need keep vertical with laser beam 5 by solder side; laser beam 5 act on titanium alloy (or: stainless steel) and plumbous at the interface; lower to this interface sealing track run-down in robot control; in welding process; protection gas jets 6 applies welding protection gas to weld seam, to prevent the weld seam oxidation.Laser power density 1600W/mm
2(timbering material: cast titanium alloy), 1800W/mm
2(timbering material: stainless steel), sweep speed 20mm/s, laser lens focal length 150mm, defocusing amount is 0, side-blown protection gas 5L/mm, the side-blown angle is 45 °.The face counterweight lead that a is applied on other faces welds.
B: side counterweight lead welding
Operation 1: the 3 positive welding of side counterweight lead, as shown in Figure 3: lay welding special mould clamp 11 in balance bracket 1 both sides, form space 10, side location between the side of side stand 8 and the jig 11.Side counterweight lead 3 is positioned in the space 10, side location, then tightens trip bolt 12.In the welding process; needing to keep corresponding of welding edge; vertical with laser beam 5, robot control laser beam 5 from titanium alloy (or: stainless steel) interface of support side and side counterweight lead 3 is inswept, and applies welding protection gas by protection gas jets 6 to weld seam.Laser power density 1600W/mm
2(timbering material: cast titanium alloy), 1800W/mm
2(timbering material: stainless steel), sweep speed 20mm/s, laser lens focal length 150mm, defocusing amount is 0, side-blown protection gas 5L/mm, the side-blown angle is 45 °.
By above operation 1, side counterweight lead 3 welds with side stand 8.Where necessary, the reverse side that we also can carry out opposite side counterweight lead 3 and side stand 8 again welds, and namely by operation 2, can increase weld penetration.
Operation 2: side counterweight lead 3 reverse side welding.The jig 11 of guaranteeing to operate in 1 has taken off.As shown in Figure 4: with the reverse side of institute's face of weld in the step 1 up, the placement level; Laser beam 5 is vertical with the need solder joint, and is 30 ° of angles with plumb line; Robot control laser beam is inswept from the intersection of balance bracket 1 side and side counterweight lead 3, and applies welding protection gas by protection gas jets 6 to weld seam.Laser power density 1600W/mm
2(timbering material: cast titanium alloy), 1800W/mm
2(timbering material: stainless steel), sweep speed 20mm/s, laser lens focal length 150mm, defocusing amount is 0, side-blown protection gas 5L/mm, the side-blown angle is 45 °.
Welding for the welding of side counterweight lead can only operate 1, and namely weld in the front of an opposite side counterweight lead and balance bracket; Also can after operating 1, operate again 2, be i.e. after the front of opposite side counterweight lead and the balance bracket welding, again reverse side welded.
B is applied to the welding of other side counterweight leads.
Reliable through balance bracket and connection fusion penetration and intensity between the counterweight lead that above method is welded, overcome in original employing Bonding Process, adhesive technology randomness is larger, the unmanageable problem of bonding quality.And because laser energy density is high in the welding process, heat input and heat affected area are little, and the deflection of structure is controlled, satisfies instructions for use.
Claims (8)
1. the method for laser welding of balance bracket and counterweight lead is characterized in that, the method adopts laser as welding energy, the counterweight lead is welded on the desired location of balance bracket; Wherein, described balance bracket comprises main support, lower main support, and its both sides between the two are respectively arranged with two side stands that are fixedly connected, and are provided with two detents on the outer surface of these 4 side stands.
2. the method for laser welding of balance bracket as claimed in claim 1 and counterweight lead is characterized in that, described laser is continuous laser or pulse laser.
3. the method for laser welding of balance bracket as claimed in claim 1 and counterweight lead is characterized in that, described counterweight lead comprises face counterweight lead and side counterweight lead.
4. the method for laser welding of balance bracket as claimed in claim 3 and counterweight lead, it is characterized in that, described counterweight lead is fixedly welded in the described detent, described side counterweight lead is welded on respectively on the side of described side stand, and described laser keeps vertical with solder side during positive welding.
5. the method for laser welding of balance bracket as claimed in claim 4 and counterweight lead; it is characterized in that; described counterweight lead adopts welding protection gas to improve welding quality in when welding, and welding protection gas is a kind of in nitrogen, argon gas, the helium or both mists.
6. the method for laser welding of balance bracket as claimed in claim 1 and counterweight lead is characterized in that, described balance bracket is made of the titanium alloy ZTC4 of 316L stainless steel or casting, and the material of described counterweight lead is pure plumbous Pb4.
7. the method for laser welding of balance bracket as claimed in claim 4 and counterweight lead, it is characterized in that, when being welded on the described side stand side, adopts described side counterweight lead special mould clamp, be provided with the locating surface suitable with the front and back sides of described balance bracket on this special mould clamp, be provided with the space, location between the side of this locating surface and 4 described side stands, described side counterweight lead is connected in this space, location and welds.
8. the method for laser welding of balance bracket as claimed in claim 3 and counterweight lead, it is characterized in that, also carry out the reverse side welding between described side counterweight lead and the described side stand, described laser is vertical with solder joint during the reverse side welding, and is 30 ° of angles with plumb line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010280008 CN101941120B (en) | 2010-09-10 | 2010-09-10 | Laser welding method of balance bracket and counterweight lead block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010280008 CN101941120B (en) | 2010-09-10 | 2010-09-10 | Laser welding method of balance bracket and counterweight lead block |
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| Publication Number | Publication Date |
|---|---|
| CN101941120A CN101941120A (en) | 2011-01-12 |
| CN101941120B true CN101941120B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010280008 Expired - Fee Related CN101941120B (en) | 2010-09-10 | 2010-09-10 | Laser welding method of balance bracket and counterweight lead block |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105737687A (en) * | 2016-02-18 | 2016-07-06 | 江西洪都航空工业集团有限责任公司 | Cabin body structure with mass and centroid adjusting function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137581Y (en) * | 1992-09-30 | 1993-07-07 | 江阴市富达电子产品开发公司 | Kinetic equilibrium instrument for abrasive wheel of grinding machine |
| CN1336013A (en) * | 1999-10-28 | 2002-02-13 | 古河电池株式会社 | Method of producing lead storage batteries and jig for production thereof |
| CN201342905Y (en) * | 2009-01-14 | 2009-11-11 | 重庆市南川区南双科技有限公司 | Automobile dynamic balance block |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4014819B2 (en) * | 2001-05-14 | 2007-11-28 | Ｎｅｃトーキン株式会社 | Chip capacitor and method of manufacturing the same |
| JP4299705B2 (en) * | 2003-03-19 | 2009-07-22 | 新日本製鐵株式会社 | Helicopter joint laser welding method for Sn or Pb plated steel sheet |
| DE102009013110B4 (en) * | 2008-03-20 | 2018-02-08 | Denso Corporation | Laser welding structure and laser welding process |
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- 2010-09-10 CN CN 201010280008 patent/CN101941120B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137581Y (en) * | 1992-09-30 | 1993-07-07 | 江阴市富达电子产品开发公司 | Kinetic equilibrium instrument for abrasive wheel of grinding machine |
| CN1336013A (en) * | 1999-10-28 | 2002-02-13 | 古河电池株式会社 | Method of producing lead storage batteries and jig for production thereof |
| CN201342905Y (en) * | 2009-01-14 | 2009-11-11 | 重庆市南川区南双科技有限公司 | Automobile dynamic balance block |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-343680A 2002.11.29 |
| JP特开2004-298964A 2004.10.28 |
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| CN101941120A (en) | 2011-01-12 |
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