Concentric jet nozzle device capable of realizing self-adjustment of target distance of special-shaped surface machining
阅读说明：本技术 一种可实现异形表面加工靶距自调节的同心射流喷嘴装置 (Concentric jet nozzle device capable of realizing self-adjustment of target distance of special-shaped surface machining ) 是由 张俊 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种可实现加工靶距自调节的同心射流喷嘴装置,包括同心喷嘴、高低压同心软管和靶距自调节装置；靶距自调节装置包括力臂可调杠杆、转动悬臂、杠杆支架、阻尼器和弹簧；力臂可调杠杆包括杠杆支撑部分和转动悬臂,杠杆支撑部分为圆弧形的导轨,与支撑部分相连的转动悬臂顶端为滑块,转动悬臂可以绕铰接中心旋转,且圆弧形导轨的曲率半径等于转动悬臂长,转动悬臂顶端滑块在圆弧形导轨内位置可调,以此实现杠杆力臂可调,杠杆支架与力臂可调杠杆之间设有弹簧和阻尼器,以此实现靶距的自动调节。(The invention discloses a concentric jet nozzle device capable of realizing self-adjustment of a machining target distance, which comprises a concentric nozzle, high-low pressure concentric hoses and a target distance self-adjusting device, wherein the concentric nozzle is provided with a plurality of concentric nozzles; the target distance self-adjusting device comprises a lever with an adjustable force arm, a rotating cantilever, a lever bracket, a damper and a spring; the lever with the adjustable force arm comprises a lever supporting part and a rotating cantilever, wherein the lever supporting part is a circular arc-shaped guide rail, the top end of the rotating cantilever connected with the supporting part is provided with a sliding block, the rotating cantilever can rotate around a hinge center, the curvature radius of the circular arc-shaped guide rail is equal to the length of the rotating cantilever, the position of the sliding block at the top end of the rotating cantilever in the circular arc-shaped guide rail is adjustable, the lever force arm is adjustable, and a spring and a damper are arranged between a lever bracket and the lever with the adjustable force arm, so that the target distance is.)
1. The utility model provides a can realize processing target distance self-interacting's concentric jet nozzle device which characterized in that: the device comprises a concentric nozzle, high-pressure and low-pressure concentric hoses and a target distance self-adjusting device, wherein the target distance self-adjusting device comprises a lever with an adjustable force arm, a lever bracket, a damper and a spring, and one end of the lever bracket is connected with a lever supporting part with an adjustable force arm; the lever with the adjustable force arm comprises a lever supporting part and a rotating cantilever, the lever supporting part is a circular arc-shaped guide rail, the top end of the rotating cantilever connected with the supporting part is provided with a sliding block, and the rotating cantilever can rotate around a hinge center; the curvature radius of the arc-shaped guide rail is equal to the length of the rotating cantilever, and the position of the sliding block at the top end of the rotating cantilever in the arc-shaped guide rail is adjustable; and a spring and a damper are arranged between the lever bracket and the lever with the adjustable force arm.
2. The concentric jet nozzle device capable of realizing self-adjustment of the processing target distance according to claim 1, wherein: the concentric nozzle comprises a concentric nozzle (fixed section) and a concentric nozzle (movable section), and the concentric nozzle (fixed section) and the concentric nozzle (movable section) are connected through a high-pressure and low-pressure concentric hose.
3. The concentric jet nozzle device capable of realizing self-adjustment of the processing target distance according to claim 1, wherein: the concentric nozzle (stationary section) is provided with a flow meter and a concentric jet inlet.
4. The concentric jet nozzle device capable of realizing self-adjustment of the processing target distance according to claim 1, wherein: the concentric nozzle (fixed section) is connected with the lever bracket, and the concentric nozzle (movable section) is connected with the lever with the adjustable arm of force.
5. The concentric jet nozzle device capable of realizing self-adjustment of the processing target distance according to claim 1, wherein: the periphery of the high-pressure and low-pressure concentric hose is provided with high-pressure fluid, and the center of the high-pressure and low-pressure concentric hose is provided with low-pressure fluid.
6. The concentric jet nozzle device capable of realizing self-adjustment of the processing target distance according to claim 1, wherein: the lever with the adjustable force arm is in an arc shape, and the spring is in a compressed state.
Technical Field
The invention belongs to the technical field of jet machining, and particularly relates to a concentric jet nozzle device capable of realizing self-adjustment of a target distance of special-shaped surface machining.
Background
The basic principle of jet machining is to machine a workpiece with a high velocity fluid having very high kinetic energy. The jet processing is a technical revolution in a certain sense as a high and new technology, has a very wide application prospect, and is a perfect complement to other processing technologies along with the maturity of the technology and the overcoming of certain limitations. At present, the application and the advantages are mainly reflected in the aspects of difficult-to-machine materials and workpiece surface treatment. By adjusting pressure, target distance and flow, jet machining can be used for cutting, cleaning, crushing, surface roughening, strengthening treatment and the like.
At present, when the target with the special-shaped surface and the irregular surface is machined by jet machining, the distance and the angle between a jet nozzle and the target need to be controlled by a precise lathe, the control difficulty is high due to the irregular surface of the target, and a device for automatically adjusting the distance according to the shape of the target is lacked.
Disclosure of Invention
In order to solve the problems, the invention provides a concentric jet nozzle device capable of realizing self-adjustment of a target distance of special-shaped surface machining, which has the following specific scheme:
the utility model provides a can realize processing target distance self-interacting concentric jet nozzle device, includes concentric nozzle, the concentric hose of high and low pressure and target distance self-interacting device, target distance self-interacting device includes arm of force adjustable lever, lever support, attenuator and spring, the arm of force adjustable lever includes lever support part and rotation cantilever, lever support one end is connected with arm of force adjustable lever supporting part, and lever supporting part is convex guide rail, and the rotation cantilever top that links to each other with the support part is the slider, and rotation cantilever can be around articulated center rotation, and the radius of curvature of convex guide rail equals to rotate the cantilever length, and rotation cantilever top slider is adjustable in the interior position of convex guide rail to this realizes that the lever arm of force is adjustable, and does not take place the displacement in adjustment process lever on level and vertical direction. And a spring and a damper are arranged between the lever bracket and the lever with the adjustable force arm, so that the target distance is automatically adjusted.
Preferably, the concentric nozzle comprises a concentric nozzle (fixed section) and a concentric nozzle (moving section), and the concentric nozzle (fixed section) and the concentric nozzle (moving section) are connected through a high-low pressure concentric hose.
Further preferably, the concentric nozzle (stationary section) is provided with a flow meter and a concentric jet inlet.
Preferably, the concentric nozzle (fixed section) is connected with the lever bracket, and the concentric nozzle (movable section) is connected with the lever with the adjustable arm of force.
Preferably, the high-pressure fluid is arranged on the periphery of the high-pressure concentric hose and the low-pressure fluid is arranged in the center of the high-pressure concentric hose, so that the inner-layer pipeline and the outer-layer pipeline are concentric automatically at the hose part, and the continuous and uniform flowing process is guaranteed.
Preferably, the lever with the adjustable moment arm is in an arc shape, and the spring is in a compressed state.
The principle of the invention is as follows: when the upstream pressure adjustment causes the flow of the concentric nozzle to change, the reaction force of the concentric nozzle impacting the surface of the target material changes, and the position of the sliding block on the arc-shaped guide rail can be changed at the moment, so that the supporting position of the lever is changed, the force arm of the lever can be adjusted, and the stability of the processing target distance can be still kept under different flow conditions. When the flow Q of the concentric nozzle is increased, the reaction force F of jet impact on the target material is correspondingly increased, at the moment, in order to ensure the target distance and the stable operation of the nozzle, the force arm of an AO section is reduced, the force arm of a BO section is increased, namely, a cantilever slide block fulcrum slides leftwards along the arc-shaped guide rail, and the stability of the target distance of the concentric jet machining under different flows can be realized.
The invention has the advantages that: the invention adopts the structure of combining the arc-shaped guide rail, the slide block and the rotating cantilever, realizes the adjustment of the lever force arm under different flow conditions, does not cause the deviation of the processing position of the nozzle in the adjustment process of the lever force arm, ensures the stability of the processing target distance in the process of processing the target material with the different surface, and has a pure mechanical structure and stable and reliable working process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a force analysis diagram of the present invention.
In the figure: 1. concentric nozzles (fixed segments); 2. high and low pressure concentric hoses; 3. a special-shaped surface target material; 4. concentric nozzles (moving segments); 5. a lever with an adjustable arm of force; 6. rotating the cantilever; 7. a lever bracket; 8. a damper; 9. a spring; 10 a flow meter; 11. a concentric jet inlet.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Referring to the attached
It should be noted that the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
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