CN204183093U - A kind of valve stem end face build-up welding apparatus - Google Patents
A kind of valve stem end face build-up welding apparatus Download PDFInfo
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- CN204183093U CN204183093U CN201420610744.0U CN201420610744U CN204183093U CN 204183093 U CN204183093 U CN 204183093U CN 201420610744 U CN201420610744 U CN 201420610744U CN 204183093 U CN204183093 U CN 204183093U
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Abstract
The utility model relates to a kind of valve stem end face build-up welding apparatus, comprise cross manipulator, transverse arm one end of cross manipulator is provided with welding gun, welding detent mechanism is provided with below welding gun, welding detent mechanism comprises the welding turntable being positioned at bottom, and the top of welding turntable is provided with rotating mechanism, governor motion and clamp system successively.The utility model is easy to operate, stable performance; The utility model completes valve stem end surfaces heap postwelding, alloy-layer hardness reaches 50 more than HRC, built-up welding performance reaches molten bath and spreads out integrated performance indexs such as being shaped well, the inner zero defect of alloy-layer, alloy-layer and mother metal metallurgical binding are good, thus achieves the target of valve raising in service life.
Description
Technical field
The utility model relates to a kind of valve stem end face build-up welding apparatus, and a kind of build-up welding apparatus for engine valve rod end surface, belongs to technical field of welding equipment specifically.
Background technology
The quality of engine valve bar directly affects the service life of valve, and in the manufacture of engine valve, the quality index of valve rod end is equal to conical surface quality index.Each associated production manufacturing enterprise in practice, often adopts: the modes such as rod end high-frequency quenching, resistance weld tabs, spray coating of alloy powder.Wherein rod end high-frequency quenching sclerosis mode, is the mode of production generally manufacturing enterprise's routine, and application is general.But it is martensitic material that such processes mode is only applicable to valve material.For the valve adopting austenite material to make, limit by material property, heat treatment hardness can not reach more than 50HRC.So, general adopt end resistance weld tabs (welding martensitic material) mode, then implement high-frequency quenching and harden.Also the enterprise had, directly adopts alloy material resistor disc welding manner.In the production of the little valve of auto manufacturing, minority enterprise also attempted employing alloy powder built-up welding mode.In producing at marine diesel valve, marine diesel engine valve stem after heat treatment, hardness is generally at 25 ~ 35HRC, and valve stem end face in internal combustion engine high-frequency with rocking arm/valve stem contact to produce rub and collide, therefore require that the hardness of valve stem end surfaces wants high, hardness should >=50HRC, and wearability, corrosion resistance and resistance to impact will be got well, and just can reach work instructions for use and life requirements.How utilizing plasma surfacing technology to realize the plasma surfacing function of the engine valve boom end of all size, thus realize improving in valve service life, is exploring in the industry always and seeking the problem of solution.
Summary of the invention
Technical problem to be solved by this invention, it is the shortcoming overcoming prior art, a kind of rational in infrastructure, stable performance is provided, utilize plasma surfacing machine equipment, self-control is furnished with the rotary table of special welding gun lifting device, Automatic-clamping workpiece, adopt the alloy powder of high rigidity, built-up welding is implemented to valve stem end face, reaches the valve stem end face build-up welding apparatus of the technical indicators such as marine diesel valve stem end hardness, alloy welding deposit layer bond strength and metallurgical fusion rate.
In order to solve above technical problem, the utility model provides a kind of valve stem end face build-up welding apparatus, comprise cross manipulator, transverse arm one end of cross manipulator is provided with welding gun, welding detent mechanism is provided with below welding gun, welding detent mechanism comprises the welding turntable being positioned at bottom, and the top of welding turntable is provided with governor motion, and the both sides of governor motion are respectively equipped with rotating mechanism and clamp system; Rotating mechanism comprises drive unit, and drive unit top is provided with friction pulley, and friction pulley touches mutually with measured workpiece one side; Clamp system comprises compression cylinder, and compression cylinder is connected with contact roller, and the axis of contact roller and friction pulley is same plane, touches mutually with measured workpiece another side.
The technical scheme that the utility model limits further is: in aforesaid valve stem end face build-up welding apparatus, drive unit comprises the buncher being arranged at welding turntable inside, the output of buncher is connected with the input of decelerator, decelerator is connected with friction pulley by exporting main shaft, bush support is socketed with, the bottom of bush support and welding turntable interference fit outside main shaft.
Further, aforesaid valve stem end face build-up welding apparatus, contact roller comprises contact roller support, comprises at least one group of duplex bearing in contact roller support, and duplex bearing and measured workpiece form three points centering structure.
Further, aforesaid valve stem end face build-up welding apparatus, governor motion comprises the motor being arranged at welding turntable inside, the output of motor is connected with the input of decelerator, centering height-regulating device is connected with above decelerator, the top of centering height-regulating device is provided with rolling center, and rolling center contacts with the centre bore of measured workpiece.
Further, aforesaid valve stem end face build-up welding apparatus, centering height-regulating device is worm and gear adjusting device, screw thread adjusting means or pneumatic regulation unit.
Further, aforesaid valve stem end face build-up welding apparatus, the side of centering height-regulating device is also provided with adjustment handwheel.
Further, aforesaid valve stem end face build-up welding apparatus, the transverse arm of cross manipulator is provided with carries gunlock structure; Carry gunlock structure and comprise adjustment sleeve, adjustment sleeve is installed on cylinder saddle, and cylinder saddle is provided with twin columns cylinder, and twin columns cylinder connects welding gun by air cylinder support.
Feature of the present utility model is: easy to operate, stable performance.The valve stem end surfaces heap postwelding that the utility model completes, alloy rigidity layer reaches more than 50HRC, built-up welding performance reaches molten bath and spreads out integrated performance indexs such as being shaped well, the inner zero defect of alloy-layer, alloy-layer and mother metal metallurgical binding are good, thus achieves the target of valve raising in service life.Product is through the detection of heap postwelding, and defect analysis, welding effect analysis, rigidity layer and heat affecting analysis, all reach nominal-mass index, and be widely used in medium speed engine valve product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model rotating mechanism.
Fig. 3 is the structural representation of the utility model governor motion.
Fig. 4 is the structural representation of the utility model clamp system.
Fig. 5 is the structural representation that the utility model carries gunlock structure.
Detailed description of the invention
A kind of valve rod end build-up welding apparatus that the present embodiment provides, structure as shown in Figures 1 to 5, for hardfacing alloy powder on the engine valve rod end of austenite material, guarantee that built-up welding performance reaches molten bath and spreads out the integrated performance indexs such as shaping shape is good, alloy-layer hardness reaches more than 50HRC, alloy-layer inner zero defect, alloy-layer and mother metal metallurgical binding is good.
Comprise cross manipulator 1, transverse arm 11 one end of this cross manipulator is provided with welding gun 12, and the below of welding gun is provided with welding detent mechanism.Wherein, welding detent mechanism comprises the welding turntable 6 being positioned at bottom, and the top of welding turntable is provided with rotating mechanism 2, governor motion 3 and clamp system 4 successively.
Rotating mechanism comprises drive unit, this drive unit comprises the ac adjustable speed motor 21 being arranged at welding turntable inside, the output of ac adjustable speed motor is connected with the input of decelerator 22, decelerator is connected with friction pulley 25 by exporting main shaft 23, bush support 24 is socketed with outside main shaft, the bottom of bush support and welding turntable interference fit, friction pulley then touches mutually with the one side of soldered engine valve stem.
Governor motion comprises the motor 31 being arranged at welding turntable inside, the output of motor is connected with the input of decelerator 32, centering height-regulating device 33 is connected with above decelerator, in the present embodiment, this centering height-regulating device is turbine and worm adjusting device, simultaneously, centering height-regulating device top be also provided with rolling center 34, rolling center with soldered Valve Disc centre bore for benchmark, top location.Meanwhile, the side of centering height-regulating device is also provided with adjustment handwheel 35.
Clamp system comprises compression cylinder 41, adopts twin props air cylinder structure in the present embodiment, to guarantee the stability that cylinder runs.Compression cylinder is provided with contact roller, and the axis of contact roller and friction pulley is same plane, touches mutually with the another side of soldered engine valve stem.Contact roller comprises contact roller support 42, comprises at least one group of double rolling bearing 43 in this contact roller support, and this double rolling bearing and soldered engine valve stem form three points centering structure, realizes soldered valve and rotates uniformly and stably.
Simultaneously, on the transverse arm of cross manipulator, the inner side of welding gun is also provided with carries gunlock structure 5, this is carried gunlock structure and is installed on welding gun support 13, comprise adjustment sleeve 51, this adjustment sleeve is installed on cylinder saddle 52, is adjusted the position of welding gun port and welded air valve by the bolt be installed on adjustment sleeve.Meanwhile, cylinder saddle is provided with twin columns cylinder 53, connects welding gun by air cylinder support 54.
In order to easy to operate, be also provided with independently external control device 7 and plasma surfacing machine control cabinet 8 in the present embodiment and be connected, realize the automation of valve rod end built-up welding.The Arc system of plasma surfacing machine is connected with rotating mechanism, automatically realize rotating mechanism and weld synchronous operation, the oscillation system of plasma gun is controlled by plasma welding machine control cabinet, receipts arc before having welded controls, controlled by plasma surfacing machine control cabinet, the fast lifting of welding gun is controlled by independently external control device, simultaneously, the adjustment of welding gun distance in welding process, PLC controls, plasma gun is under the control of plasma welding machine machine tool simultaneously, realize welding current, powder sending quantity, protective gas, the adjustment of the welding parameters such as the oscillating quantity of welding gun and control.
When the utility model uses: first soldered Valve Disc is installed on downwards on the rolling center of governor motion, with soldered Valve Disc centre bore for benchmark, top location, and friction pulley and contact roller are contacted with soldered engine valve stem.Control device for opening button, by driven by motor decelerator to adjust the height of turbine and worm device and rolling center; Again by adjustment handwheel, adjustment center, to adapt to the change of different-diameter valve stem center.
Secondly, control device for opening controls the operation of rotating mechanism and clamp system; Use ac adjustable speed motor as the main driving of rotating mechanism, drive decelerator with driver output main shaft, utilize friction pulley and the connection exporting main shaft, drive the low speed rotation of soldered air valve.Soldered valve, under the driving of friction pulley, by hold-down mechanism, makes soldered engine valve stem and friction pulley compress, and hold-down mechanism adopts double rolling bearing, and three points centering patten's design, realizes the uniform and stable rotation of soldered valve.
The built-up welding of soldered valve is finally completed by this kind of mode.
In order to realize after plasma surfacing terminates, electric arc receives the object of arc fast, according to the mechanism that plasma surfacing molten bath produces in the present embodiment, and article on plasma Arc, receive arcing butt welding connect the analysis that molten bath easily produces weld defect, have employed the fast lifting welding gun mechanism of two cylinder arrangement, at the end of the decay of plasma surfacing electric arc receipts arc closes on, mention welding gun fast, thus effectively control the formation that welding pool produces defect.
The valve stem end surfaces heap postwelding utilizing the utility model to complete, alloy-layer hardness reaches more than 50HRC, built-up welding stable performance, molten bath spreads out integrated performance indexs such as being shaped well, the inner zero defect of alloy-layer, alloy-layer and mother metal metallurgical binding are good, thus achieves the target of valve raising in service life.Product is through the detection of heap postwelding, and defect analysis, welding effect analysis, rigidity layer and heat affecting analysis, all reach rated performance index, and be widely used in medium speed engine valve product.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (7)
1. a valve stem end face build-up welding apparatus, comprise cross manipulator, transverse arm one end of described cross manipulator is provided with welding gun, it is characterized in that: below described welding gun, be provided with welding detent mechanism, described welding detent mechanism comprises the welding turntable being positioned at bottom, the top of described welding turntable is provided with governor motion, and the both sides of described governor motion are respectively equipped with rotating mechanism and clamp system; Described rotating mechanism comprises drive unit, and described drive unit top is provided with friction pulley, and described friction pulley touches mutually with measured workpiece one side; Described clamp system comprises compression cylinder, and described compression cylinder is connected with contact roller, and the axis of described contact roller and friction pulley is same plane, touches mutually with measured workpiece another side.
2. valve stem end face build-up welding apparatus according to claim 1, it is characterized in that: described drive unit comprises the buncher being arranged at welding turntable inside, the output of described buncher is connected with the input of decelerator, described decelerator is connected with friction pulley by exporting main shaft, bush support is socketed with, the bottom of described bush support and welding turntable interference fit outside described main shaft.
3. valve stem end face build-up welding apparatus according to claim 1, is characterized in that: described contact roller comprises contact roller support, comprises at least one group of duplex bearing in described contact roller support, and described duplex bearing and measured workpiece form three points centering structure.
4. valve stem end face build-up welding apparatus according to claim 1, it is characterized in that: described governor motion comprises the motor being arranged at welding turntable inside, the output of described motor is connected with the input of decelerator, centering height-regulating device is connected with above described decelerator, the top of described centering height-regulating device is provided with rolling center, and described rolling center contacts with the centre bore of measured workpiece.
5. valve stem end face build-up welding apparatus according to claim 4, is characterized in that: described centering height-regulating device is worm and gear adjusting device, screw thread adjusting means or pneumatic regulation unit.
6. valve stem end face build-up welding apparatus according to claim 4, is characterized in that: the side of described centering height-regulating device is also provided with adjustment handwheel.
7. a kind of valve stem end face build-up welding apparatus according to claim 1, is characterized in that: the transverse arm of described cross manipulator is provided with carries gunlock structure; Described gunlock structure of carrying comprises adjustment sleeve, and described adjustment sleeve is installed on cylinder saddle, and described cylinder saddle is provided with twin columns cylinder, and described twin columns cylinder connects welding gun by air cylinder support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610744.0U CN204183093U (en) | 2014-10-21 | 2014-10-21 | A kind of valve stem end face build-up welding apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610744.0U CN204183093U (en) | 2014-10-21 | 2014-10-21 | A kind of valve stem end face build-up welding apparatus |
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| CN204183093U true CN204183093U (en) | 2015-03-04 |
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| CN201420610744.0U Active CN204183093U (en) | 2014-10-21 | 2014-10-21 | A kind of valve stem end face build-up welding apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722903A (en) * | 2015-03-23 | 2015-06-24 | 重庆大东隆腾汽车摩托车气门制造有限公司 | Plasma surfacing method for small end of valve rod |
| CN106191726A (en) * | 2016-08-30 | 2016-12-07 | 南京国际船舶设备配件有限公司 | A kind of valve sealing face hardening process equipment |
| CN110548974A (en) * | 2019-09-06 | 2019-12-10 | 河南澳凰智能科技有限公司 | Multifunctional precision welding equipment |
-
2014
- 2014-10-21 CN CN201420610744.0U patent/CN204183093U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722903A (en) * | 2015-03-23 | 2015-06-24 | 重庆大东隆腾汽车摩托车气门制造有限公司 | Plasma surfacing method for small end of valve rod |
| CN106191726A (en) * | 2016-08-30 | 2016-12-07 | 南京国际船舶设备配件有限公司 | A kind of valve sealing face hardening process equipment |
| CN106191726B (en) * | 2016-08-30 | 2018-04-27 | 南京国际船舶设备配件有限公司 | A kind of valve sealing face hardens process equipment |
| CN110548974A (en) * | 2019-09-06 | 2019-12-10 | 河南澳凰智能科技有限公司 | Multifunctional precision welding equipment |
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Address after: 211121, No. 276, Ling Shun North Road, Lake cooked Town, Jiangning District, Jiangsu, Nanjing Patentee after: Nanjing COSCO marine equipment accessories Co., Ltd Address before: 211121, No. 276, Ling Shun North Road, Lake cooked Town, Jiangning District, Jiangsu, Nanjing Patentee before: NANJING INTERNATIONAL MARINE EQUIPMENT & SPARES Ltd. |