Composite deburring method for valve body workpiece

Abstract

The invention discloses a valve body workpiece composite deburring method which comprises the steps that an AGV transfer trolley transfers a valve body workpiece to a rough cleaning machine, and scrap iron and cutting fluid on the surface and an inner cavity of the valve body workpiece are flushed and removed through cleaning fluid in the rough cleaning machine; after rough cleaning, the valve body workpiece is transferred to a deburring workbench for manual deburring; the valve body workpiece subjected to manual deburring is transferred to an endoscopic table, and scrap iron in an inner cavity of the valve body workpiece is inspected and removed through an endoscope; the valve body workpiece subjected to endoscopy enters a high-pressure cleaning machine through the roller way for high-pressure cleaning; the valve body workpiece subjected to high-pressure cleaning enters a heat energy explosion automatic roller line, is overturned by an overturning tool and then is fed into a heat energy explosion machine through a mechanical arm, and burrs are changed into metal oxidation powder through heat energy explosion combustion; and the valve body workpiece subjected to heat energy explosion combustion enters a derusting cleaning machine, and metal oxidation powder is removed through acid pickling. Mechanical deburring, high-pressure deburring and heat energy deburring are integrated, and the quality of a valve body workpiece is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of valve body processing, and particularly relates to a valve body workpiece composite deburring method. BACKGROUND

[0002] Hydraulic multi-way valve is a typical representative of high-end hydraulic components. It has been widely applied in the fields of engineering machinery, mine machinery, port machinery and the like due to its superior control performance, compact and flexible structure, strong adaptability to equipment and the like.

[0003] However, the hydraulic multi-way valve product structure contains features such as plane, slender hole, intermittent valve hole and complex mounting hole, and it is difficult to remove burrs by machining. Once the burrs fall into the element under the scouring of oil, the slide valve will be jammed, the key profile of the valve body will be damaged, and the performance of the host machine will be affected or even stopped. The deburring process plays an important role in the machining process of the valve body and is a very critical process. The existence of burrs has a great influence on the valve. For example, the burrs in the valve core hole will affect the accuracy of honing, and even scratch the workpiece during honing, resulting in workpiece scrap; if the burrs in the sink groove where the sealing element is placed are not removed, the sealing element will be damaged, causing oil leakage; once the burrs on the valve body enter the hydraulic system, serious turbulence or non-laminar flow will be caused, resulting in filter or pipeline blockage. In summary, the deburring process is of great significance to the quality and performance improvement of the valve body.

[0004] The existing technology has the following defects: the current deburring workbench structure is simple and cannot solve the problem of residual iron filings and cutting fluid on the surface and internal cavity of the workpiece before deburring; the labor intensity is large and cannot solve the problem of turning over large workpieces, which is not suitable for deburring of large workpieces and is not conducive to market promotion. SUMMARY

[0005] Object: In view of at least one of the above technical problems, the application provides a valve body workpiece composite deburring method which integrates mechanical deburring, high-pressure deburring and thermal energy deburring.

[0006] Technical solution: To solve the above technical problems, the application adopts the technical solution that: In a first aspect, the application provides a valve body workpiece composite deburring method, comprising: The AGV transfer trolley transfers the valve body workpiece to the rough cleaning machine, and the iron filings and cutting fluid on the surface and internal cavity of the valve body workpiece are removed by washing with cleaning liquid in the rough cleaning machine; After rough cleaning, the valve body workpiece is transferred to the deburring workbench for manual deburring; After manual deburring, the valve body workpiece is transferred to the endoscopy table, and the iron filings in the internal cavity of the valve body workpiece are removed by endoscopy inspection; After endoscopy inspection, the valve body workpiece enters the high-pressure cleaning machine through the roller way and is subjected to high-pressure cleaning in the high-pressure cleaning machine; After the valve body workpiece is cleaned by high pressure, it enters the thermal energy explosion automatic roller line, is turned over by the turning tool, and is sent into the thermal energy explosion machine by the mechanical hand. The burrs are changed into metal oxide powder by thermal energy explosion combustion in the thermal energy explosion machine; After the valve body workpiece is cleaned by high pressure, it enters the thermal energy explosion automatic roller line, is turned over by the turning tool, and is sent into the thermal energy explosion machine by the mechanical hand. The burrs are changed into metal oxide powder by thermal energy explosion combustion in the thermal energy explosion machine;

[0007] In some embodiments, the valve body workpiece composite deburring method further comprises: The valve body workpiece cleaned by rust removal is transported to the secondary endoscope inspection table for secondary endoscope inspection.

[0008] In some embodiments, the manual deburring comprises: The edges and the valve hole burrs on the valve body workpiece are removed by the tools equipped on the deburring workbench.

[0009] Further, the tools equipped on the deburring workbench include a mixed file, a scraper, a magnetic screwdriver, a drill bit, an oil stone, sandpaper, an air gun, a flashlight, an endoscope, and an electric deburring tool equipped with a fiber oil stone brush and a fiber grinding rod.

[0010] In some embodiments, the high pressure cleaning in the high pressure cleaner comprises: The high pressure cleaner uses water as a medium to hit high pressure water from a high pressure pump, and the high pressure water reaches the nozzle through a pipeline. Then, the high pressure, low flow rate water is converted into low pressure, high flow rate water jet. The water jet is used to continuously and continuously act on the surface and the inner cavity of the valve body workpiece by using the instantaneous impact force of the water jet, so as to realize precise cleaning and remove part of the burrs generated after mechanical processing.

[0011] In some embodiments, the turning tool is used to turn the valve body workpiece from a horizontal type to a vertical type, so as to be clamped and sent into the thermal energy explosion machine by the mechanical hand.

[0012] In some embodiments, the burrs are changed into metal oxide powder by thermal energy explosion combustion in the thermal energy explosion machine, comprising: After the valve body workpiece is placed in the lower sealed cavity of the thermal energy explosion machine, the lower sealed cavity lifts the valve body workpiece to the sealed combustion cavity. Then, the mixed gas is filled into the combustion cavity, and the mixed gas surrounds the valve body workpiece and the internal hole. The mixed gas is ignited by the igniter to generate heat explosion. The temperature of the burrs rises above the ignition point, and the burrs begin to burn to generate metal oxide powder.

[0013] Further, the mixed gas comprises methane and oxygen.

[0014] In some embodiments, the metal oxide powder is removed by acid pickling, comprising: The metal oxide powder on the valve body workpiece is removed by cleaning with a weak acid solution with a pH of 4-6. In a second aspect, the application provides a valve body workpiece, which is obtained by the valve body workpiece composite deburring method.

[0015] Beneficial effects: The valve body workpiece composite deburring method provided by the application has the following advantages: the method integrates mechanical deburring, high-pressure deburring, and thermal energy deburring, and first removes burrs and flash on the edge of the valve body workpiece and the valve hole through manual deburring; then the valve body workpiece is continuously and continuously acted on by a low-pressure and high-flow-rate water jet in a fixed point and position through a high-pressure cleaning machine, so that the valve body workpiece is precisely cleaned and part of the small flash generated after machining is removed; finally, the burrs are burned into metal oxide powder through the explosion of heat, and then removed through acid solution cleaning, thereby greatly improving the quality of the valve body workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a schematic view of the valve body workpiece composite deburring method of the embodiment; In the figure: AGV transfer trolley 1, rough cleaning machine 2, deburring workbench 3, endoscope table 4, high-pressure cleaning machine 5, thermal energy explosion automatic roller line 6, mechanical hand 7, overturning tooling 8, thermal energy explosion machine 9, rust removal cleaning machine 10, secondary endoscope inspection table 11. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the application and its application or use. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0018] Unless otherwise specifically stated, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the various examples herein are only meant to be illustrative, and not limiting of the scope of the application. Additionally, it is to be understood that the drawings are not necessarily to scale. For the most part, the dimensions of the various parts are arbitrarily shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill in the art can not be discussed in detail herein. Any specific values recited herein are merely illustrative, and not limiting. Other examples of the exemplary embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings and a discussion of one item in a drawing is not necessary in subsequent drawings. Thus, the exemplary embodiments can be one in which, for example:

[0019] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0020] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The professional terms in the present application are explained as follows: The deburring technology of mechanical processing is essentially to use deburring tools to cut the burrs of the parts, so that the burrs in the hole of the parts can be removed, the edge can be chamfered and the surface can be finished.

[0022] There are various manual deburring tools. The commonly used ones are tool steel or high speed steel which is quenched, and various shaped scrapers are ground by workers according to different part shapes and burr positions, which are used to remove the burrs at the hole chamfering positions of cross holes, shaped surfaces, inner cavity inclined holes and various positions. The brush deburring is simple and easy to operate, does not need special equipment, has simple operation and low cost; the power brush type is various and has strong adaptability, which can be widely used to remove the burrs at various positions of the machined parts; the deburring quality is good, no secondary burrs are generated, and the edge can be chamfered after deburring; the power brush with abrasive particles can improve the roughness of the machined surface.

[0023] As shown in Figure 1 The valve body workpiece composite deburring method provided by the embodiment of the present application comprises: The AGV transfer trolley 1 transfers the valve body workpiece to the rough cleaning machine 2, and the iron filings and cutting fluid on the surface and inner cavity of the valve body workpiece are removed by washing with cleaning liquid in the rough cleaning machine 2; After rough cleaning, the valve body workpiece is transferred to the deburring workbench 3 for manual deburring; After manual deburring, the valve body workpiece is transferred to the endoscope table 4, the iron filings in the inner cavity of the valve body workpiece are removed by endoscope inspection; After endoscope inspection, the valve body workpiece enters the high-pressure cleaning machine 5 through the roller way, and high-pressure cleaning is performed in the high-pressure cleaning machine 5; After high-pressure cleaning, the valve body workpiece enters the thermal explosion automatic roller conveyor line 6, is flipped by the flipping fixture 8, and then sent into the thermal explosion machine 9 by the robot arm 7. In the thermal explosion machine 9, the burrs are turned into metal oxide powder through thermal explosion combustion. After the valve body workpiece is burned by thermal explosion, it enters the rust removal and cleaning machine 10, where metal oxide powder is removed by pickling.

[0024] In some embodiments, the composite deburring method for valve body workpieces further includes: After rust removal and cleaning, the valve body workpiece is transferred to the secondary endoscopic inspection table 11 for secondary endoscopic inspection. It should be noted that this step is to prevent the valve body workpiece from developing cracks during thermal explosion, which would affect the quality of the valve body workpiece. Only valve body workpieces without cracks are considered qualified.

[0025] In some embodiments, manual deburring includes: Use the tools provided on the deburring workbench 3 to remove the edges and burrs on the valve body workpiece, as well as the burrs and flash on the valve holes.

[0026] In this embodiment, the deburring workbench 3 is equipped with the following tools: assorted files, scrapers, magnetic screwdrivers, drill bits, whetstones, sandpaper, air guns, flashlights, endoscopes, and an electric deburring tool equipped with a fiber whetstone brush and a fiber abrasive rod. The fiber whetstone brush is highly efficient at removing larger intersecting holes, while the fiber abrasive rod is highly efficient at removing smaller, shallower intersecting holes, resulting in better deburring. Using both together achieves better deburring results.

[0027] In some embodiments, high-pressure cleaning is performed inside the high-pressure washer 5, including: The high-pressure washer 5 uses water as a medium. High-pressure water is pumped out from the high-pressure pump, passes through the pipeline to the nozzle, and then the high-pressure, low-flow-rate water is transformed into a low-pressure, high-flow-rate water jet. The instantaneous impact force of the water jet is used to continuously and precisely clean the surface and inner cavity of the valve body workpiece, thereby achieving precision cleaning while removing some of the burrs and flash generated after machining.

[0028] In some embodiments, the flipping fixture 8 is used to flip the valve body workpiece from a horizontal position to an upright position so that the robot arm 7 can grip and feed it into the thermal explosion machine 9.

[0029] In some embodiments, the burrs are converted into metal oxide powder through thermal explosion combustion within the thermal explosion machine 9, including: The valve body workpiece is placed in the lower sealed chamber of the thermal explosion machine 9. The lower sealed chamber raises the valve body workpiece to the sealed combustion chamber, where pressurized mixed gas is then introduced. The mixed gas surrounds the valve body workpiece and its internal channels. The mixed gas is ignited by an igniter, generating a thermal explosion. The burr temperature rises above its ignition point, and combustion begins, producing metal oxide powder. In this embodiment, the mixed gas includes methane and oxygen.

[0030] In some embodiments, removing metal oxide powder by pickling includes: removing metal oxide powder on the valve body workpiece by cleaning with an acidic solution. In this embodiment, the acidic solution is a weak acid solution with a pH of 4 to 6.

[0031] In summary, the composite deburring method for valve body workpieces provided in this application integrates mechanical deburring, high-pressure deburring, and thermal deburring, thereby improving the quality of valve body workpieces.

[0032] This application also provides a valve body workpiece, which is manufactured using the aforementioned composite deburring method for valve body workpieces.

[0033] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method of composite deburring of valve body workpieces, characterized by, The valve body workpiece is transported to a rough cleaning machine by an AGV transfer trolley, and iron filings and cutting fluid on the surface and inner cavity of the valve body workpiece are removed by washing liquid in the rough cleaning machine. After rough cleaning, the valve body workpiece is transported to a deburring workbench for manual deburring. After manual deburring, the valve body workpiece is transported to an endoscope table, and iron filings in the inner cavity of the valve body workpiece are removed through endoscopic examination. After endoscopic examination, the valve body workpiece enters a high-pressure cleaning machine through a roller way, and high-pressure cleaning is performed in the high-pressure cleaning machine. After high-pressure cleaning, the valve body workpiece enters a thermal energy explosion automatic roller line, is turned over by a turning tool, and is sent into a thermal energy explosion machine by a mechanical hand, and the burrs are changed into metal oxide powder through thermal energy explosion combustion in the thermal energy explosion machine. After thermal energy explosion combustion, the valve body workpiece enters a rust removal cleaning machine, and the metal oxide powder is removed through pickling. The valve body workpiece after rust removal cleaning is transported to a secondary endoscopic examination table for secondary endoscopic examination.

2. The valve body workpiece composite deburring method of claim 1, wherein, Manual deburring includes: The edge, burr and burr on the valve body workpiece are removed by the tools provided on the deburring workbench.

3. The valve body workpiece composite deburring method of claim 1, wherein, The tools provided on the deburring workbench include a miscellaneous file, a scraper, a magnetic screwdriver, a drill bit, an oil stone, sandpaper, an air gun, a flashlight, an endoscope, and an electric deburring tool equipped with a fiber oil stone brush and a fiber grinding rod. High-pressure cleaning in the high-pressure cleaning machine includes:

4. The valve body workpiece composite deburring method of claim 3, wherein, The high-pressure cleaning machine uses water as a medium, and high-pressure water is sprayed from a high-pressure pump, reaches a nozzle through a pipeline, and then changes the high-pressure and low-flow-rate water into a low-pressure and high-flow-rate water jet, so that the water jet is continuously and continuously applied to the surface and inner cavity of the valve body workpiece by instantaneous impact force, thereby achieving precise cleaning and removing part of the burrs generated after machining.

5. The valve body workpiece composite deburring method of claim 1, wherein, The turning tool is used to turn the valve body workpiece from a horizontal type to a vertical type, so that the mechanical hand can clamp and send the valve body workpiece into the thermal energy explosion machine. The burrs are changed into metal oxide powder through thermal energy explosion combustion in the thermal energy explosion machine, including:

6. The valve body workpiece composite deburring method of claim 1, wherein, The valve body workpiece is placed in a lower sealed cavity under the thermal energy explosion machine, the lower sealed cavity lifts the valve body workpiece into a sealed combustion cavity, and then the combustion cavity is filled with pressurized mixed gas, and the mixed gas surrounds the valve body workpiece and the internal hole; the mixed gas is ignited by an igniter to generate heat explosion, and the temperature of the burrs rises above the ignition point to start combustion to generate metal oxide powder.

7. The valve body workpiece composite deburring method of claim 1, wherein, The mixed gas includes methane and oxygen. The metal oxide powder on the valve body workpiece is removed by cleaning with a weak acid solution with a pH of 4-6.

8. The valve body workpiece composite deburring method of claim 7, wherein, The valve body workpiece is prepared by the deburring method of any one of claims 1-9.

9. The valve body workpiece composite deburring method of claim 1, wherein, ​ ​ 10. A valve body workpiece characterized by, ​

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