A method for improving the quality of a swing door matching pair

Abstract

The present application relates to the technical field of aviation plunger pump swing valve matching pair quality assembly, and discloses a detection method for improving swing valve matching pair quality, which detects the gap between the pendulum assembly and the nozzle on the valve seat, grinds the arc surface of the nozzle when the pendulum assembly contacts the sharp edge of the nozzle, so that the matching surface of the nozzle can form an arc surface after grinding, and the phenomenon of the sharp edge of the matching surface collapsing is avoided when the pendulum assembly swings and knocks against the sharp edge of the nozzle. The accumulated errors generated in the machining process of the swing valve and the valve seat are eliminated, the uniformity of the matching gap of the swing valve and the valve seat is ensured, the sharp edge requirement after combined machining of the matching surface is ensured, the gap of the nozzle after arc surface grinding is detected by assembling the movable seat on the pendulum seat assembly, the uniformity and consistency of the matching gap can be directly detected, the combined machining method and parameters are optimized in reverse, and the machining quality of the matching pair and the product performance are stabilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of the quality assembly of the swing valve matching pair of an aero-cylinder pump, in particular to a detection method for improving the quality of the swing valve matching pair. BACKGROUND

[0002] The swing valve assembly in the aero-cylinder pump is the key to affect the performance of the product, and the key point of controlling the performance of the product lies in the guarantee of the gap between the swing valve matching pair, and the product performance requires that the uniformity of the gap is guaranteed on the premise of guaranteeing the small gap tolerance, and if the gap of the matching pair is not uniform, it is easy to cause unstable fuel pressure transmission, thereby affecting the performance parameters of the cylinder pump.

[0003] Based on the current production and processing mode, each component is processed separately and then assembled, and the cumulative error of the size tolerance of the single piece is formed in the assembly process, so that the swing valve and the valve seat matching pair are in motion, and the parameter swing or the jam phenomenon is caused due to the non-uniform gap.

[0004] In order to eliminate the unqualified performance curve caused by the too large matching gap in the performance test of the swing valve of the cylinder pump, or the jam failure caused by the small gap, and guarantee the stable performance of the swing valve, the moving surface of the swing valve matching pair needs to be combined and processed. Generally, the lapping processing is adopted, although the cumulative error caused by the separate processing and assembly of the swing valve and the valve seat can be eliminated, but the phenomenon of the collapse of the sharp edge of the matching surface is easy to cause, which also affects the eligibility of the performance of the swing valve. SUMMARY

[0005] In order to overcome the defects existing in the prior art, the purpose of the present application is to provide a detection method for improving the quality of the swing valve matching pair, so as to solve the technical problem that the collapse of the sharp edge of the matching surface of the valve seat is easy to occur after the assembly of the swing valve and the valve seat in the prior art, which also affects the eligibility of the performance of the swing valve.

[0006] The present application is realized by the following technical solutions:

[0007] A detection method for improving the quality of the swing valve matching pair, comprising the following steps:

[0008] The pendulum assembly is assembled on the pendulum support frame through the pin shaft to form a pendulum seat assembly, and then the end of the pendulum seat assembly is assembled on the valve seat, so that a gap is formed between the pendulum assembly and the nozzle on the valve seat;

[0009] The pendulum assembly is swung, and when the pendulum assembly contacts the sharp edge of the nozzle, the nozzle is lapped in an arc surface, so that the gap between the pendulum assembly and the nozzle is always maintained;

[0010] The lapped nozzle is assembled on the pendulum seat assembly through the valve seat for gap detection, and the detection work of the quality of the swing valve matching pair is completed.

[0011] Preferably, one end of the pendulum assembly is the fixed end of the pendulum, and the other end is the pendulum end, with a gap formed between the pendulum end and the nozzle on the valve seat.

[0012] Furthermore, the gap between the pendulum end and the nozzle on the valve seat ranges from 0.015 to 0.03 mm.

[0013] Preferably, the nozzle arc surface is machined by a nozzle arc surface machining device, which includes a base, two sets of roller support frames and roller assemblies; the two sets of roller support frames are respectively arranged on both sides of the base, and the two ends of the roller assembly are rotatably mounted on the roller support frames. The base is also provided with an assembly seat, which is located directly below the roller assembly. The valve seat is mounted on the assembly seat, and the nozzle on the valve seat is ground on the arc surface by the roller assembly.

[0014] Furthermore, the roller assembly includes a shaft and rollers, with the rollers mounted on the shaft. The two ends of the shaft are respectively rolled onto two sets of roller support frames, and the rollers perform arc surface grinding on the nozzles on the valve seat.

[0015] Furthermore, the arc surface grinding process for the nozzle on the valve seat is as follows:

[0016] Assemble the valve seat onto the mounting base, check and adjust the lowest point of the roller to the support point of the two sets of roller support frames, and lock the two sets of roller support frames.

[0017] The rotating roller contacts the nozzle and grinds the mating surface of the nozzle, causing the mating surface of the nozzle to form an arc-shaped surface under the action of the rotating roller.

[0018] Preferably, the valve seat is assembled onto the pendulum seat assembly, and the gap is detected by a detection and processing device. The detection and processing device includes a positioning base plate, a support, a positioning plate, a pendulum fixing assembly, and a weight. The support is set on the positioning base plate, the positioning plate is set on the support, and the pendulum fixing assembly is set on the positioning plate. The pendulum fixing end of the pendulum seat assembly is assembled onto the pendulum fixing assembly, so that the pendulum seat assembly and the valve seat are integrated and in a suspended state. The weight is suspended on the pendulum seat assembly by a chain, providing gravity to the pendulum seat assembly.

[0019] Furthermore, the pendulum fixing assembly is provided with a smooth pressure block, and the bottom end of the pendulum fixing assembly is provided with a tightening device. One end of the tightening device extends into the pendulum fixing assembly and abuts against the smooth pressure block, so that the smooth pressure block is tightened against the pendulum fixing end by the tightening device.

[0020] Furthermore, the specific process of the inspection and processing device to detect the gap between the pendulum seat assembly and the valve seat is as follows: The fixed end of the pendulum is assembled on the pendulum fixed assembly, and the fixed end of the pendulum is tightened and fixed by the tightener, so that the pendulum seat assembly and the valve seat are integrated and in a suspended state. The weight is suspended on the pendulum seat assembly, providing downward gravity to the pendulum seat assembly and the valve seat, simulating the pendulum seat assembly and the valve seat in a working state. The feeler gauge is inserted between the pendulum assembly and the nozzle. When the feeler gauge can pass smoothly between the pendulum assembly and the nozzle, the quality of the pendulum valve mating pair is qualified.

[0021] Furthermore, the thickness of the feeler gauge is 0.015–0.03 mm.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] This invention provides a method for improving the quality of a swing valve mating pair. By detecting the gap between the pendulum assembly and the nozzle on the valve seat, and by performing arc-surface grinding on the nozzle when the pendulum assembly contacts the nozzle's sharp edge, the mating surface of the nozzle is formed into an arc shape after grinding. This prevents the pendulum assembly from hitting the nozzle's sharp edge during swing, thus avoiding edge collapse of the mating surface. This method eliminates the cumulative errors generated during the separate processing of the swing valve and valve seat, ensures uniform gap between the swing valve and valve seat, and guarantees the sharp edge requirements after the mating surface is combined and processed. Furthermore, by assembling the arc-surface-ground nozzle onto the pendulum seat assembly via the valve seat and performing gap detection, the uniformity and consistency of the mating pair gap can be directly detected. Simultaneously, the combined processing method and parameters are optimized in reverse to stabilize the processing quality and product performance of the mating pair.

[0024] Furthermore, the nozzle arc surface processing device grinds the nozzle arc surface by rotating the roller assembly, so that the nozzle can form an arc surface consistent with the circumferential swing of the pendulum, ensuring the uniformity of the mating surface gap and the requirements of the sharp edge, and also ensuring that the state after the combined processing is consistent with the motion state in the product, thus ensuring the uniformity of the arc surface.

[0025] Furthermore, the testing and processing device performs gap testing on the pendulum seat assembly and the valve seat, simulating the mating motion state for testing. This reduces parameter oscillation or jamming caused by poor uniformity of the mating pairs, and improves the product debugging qualification rate. Attached Figure Description

[0026] Figure 1 This is a flowchart of a detection method for improving the quality of a swing valve mating pair according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the swing valve mating pair in this invention;

[0028] Figure 3 forFigure 2 Enlarged diagram of part A in the middle;

[0029] Figure 4 This is a schematic diagram of the nozzle arc surface machining structure in this invention;

[0030] Figure 5 This is a top view of the nozzle arc surface machining structure in this invention;

[0031] Figure 6 This is a schematic diagram of the detection structure for the mass of the swing valve mating pair in this invention;

[0032] In the diagram: 1-Pendulum seat assembly; 2-Gate seat; 3-Pendulum support frame; 4-Pendulum assembly; 5-Pin shaft; 6-Nozzle; 7-Roller assembly; 8-Roller support frame; 9-Base; 10-Assembly seat; 11-Positioning base plate; 12-Support; 13-Positioning plate; 14-Pendulum fixing assembly; 15-Smooth pressure block; 16-Tightener; 17-Chain; 18-Weight; 41-Pendulum fixing end; 42-Pendulum end; 71-Rotating shaft; 72-Roller. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings:

[0035] In order to overcome the defects of the prior art, the purpose of this invention is to provide a detection method to improve the quality of the swing valve mating pair, so as to solve the technical problem that the mating surface of the swing valve seat is prone to sharp edge collapse after the swing valve and valve seat are assembled, which also affects the qualification of the swing valve performance.

[0036] See Figure 1 and Figure 2 In one embodiment of the present invention, a detection method for improving the quality of a swing valve mating pair is provided, comprising the following steps:

[0037] Step 1: Assemble the pendulum assembly 4 onto the pendulum support frame 3 via the pin 5 to form the pendulum seat assembly 1. Then assemble the end of the pendulum seat assembly 1 onto the valve seat 2, so that a gap is formed between the pendulum assembly 4 and the nozzle 6 on the valve seat 2.

[0038] Step 2, the pendulum assembly 4, when the pendulum assembly 4 contacts the tip of the nozzle 6, the nozzle 6 is ground on an arc surface so that the gap between the pendulum assembly 4 and the nozzle 6 is always maintained.

[0039] Step 3: After the arc surface is ground, the nozzle 6 is assembled onto the pendulum seat assembly 1 through the valve seat 2 for gap detection, thus completing the quality detection of the pendulum valve mating pair.

[0040] Specifically, one end of the pendulum assembly 4 is the pendulum fixed end 41, and the other end is the pendulum end 42, with a gap formed between the pendulum end 42 and the nozzle 6 on the valve seat 2.

[0041] Specifically, according to Figure 3 As shown, the gap between the pendulum end 42 and the nozzle 6 on the valve seat 2 ranges from 0.015 to 0.03 mm.

[0042] Specifically, the curved surface of nozzle 6 is machined using a nozzle curved surface machining device, according to... Figure 4 and Figure 5 As shown, the nozzle arc surface processing device includes a base 9, two sets of roller support frames 8, and roller assembly 7; the two sets of roller support frames 8 are respectively arranged on both sides of the base 9, and the two ends of the roller assembly 7 are rotatably mounted on the roller support frames 8. The base 9 is also provided with a mounting seat 10, which is located directly below the roller assembly 7. The valve seat 2 is mounted on the mounting seat 10, and the nozzle 6 on the valve seat 2 is arc-surface ground by the roller assembly 7.

[0043] The roller assembly 7 includes a rotating shaft 71 and a roller 72. The roller 72 is mounted on the rotating shaft 71, and the two ends of the rotating shaft 71 are respectively rolled on two sets of roller support frames 8. The roller 72 performs arc surface grinding on the nozzle 6 on the valve seat 2.

[0044] The arc surface grinding process of the nozzle 6 on the valve seat 2 in this invention is as follows:

[0045] Mount the valve seat 2 onto the mounting base 10, check and adjust the lowest point of the roller 72 to the support point of the two sets of roller support frames 8, and ensure that the difference between the two support points is less than 0.005, then lock the two sets of roller support frames 8.

[0046] The rotating roller 72 contacts the nozzle 6 and grinds the mating surface of the nozzle 6, so that the mating surface of the nozzle 6 forms an arc-shaped surface under the action of the rotating roller 72.

[0047] When the parts are in a free state, a working pin with a diameter 2M smaller than the working pin is used to check the uniformity of the pendulum and the nozzle arc surface. The pendulum is used to lightly rub the nozzle arc surface. If there is unevenness, a bright band will appear on the pendulum arc surface. The mating pair assembly processing device is used to assemble and process the arc surface mating pair to ensure the uniformity of the arc surface.

[0048] Specifically, the valve seat 2 is assembled onto the pendulum seat assembly 1, and the gap is detected by a detection and processing device, according to... Figure 6 As shown, the detection and processing device includes a positioning base plate 11, a support 12, a positioning plate 13, a pendulum fixing assembly 14, and a weight 18. The support 12 is mounted on the positioning base plate 11, the positioning plate 13 is mounted on the support 12, and the pendulum fixing assembly 14 is mounted on the positioning plate 13. The pendulum fixing end 41 of the pendulum assembly 4 of the pendulum seat assembly 1 is assembled on the pendulum fixing assembly 14, so that the pendulum seat assembly 1 and the valve seat 2 are integrated and in a suspended state. The weight 18 is suspended on the pendulum seat assembly 1 through a chain 17, providing gravity to the pendulum seat assembly 1, effectively simulating the gap detection between the pendulum seat assembly 1 and the valve seat 2 under the motion state.

[0049] Specifically, the pendulum fixing assembly 14 is provided with a smooth pressure block 15, and the bottom end of the pendulum fixing assembly 14 is provided with a tightening device 16. One end of the tightening device 16 extends into the pendulum fixing assembly 14 and abuts against the smooth pressure block 15, so that the smooth pressure block 15 is tightened against the pendulum fixing end 41 by the tightening device 16.

[0050] The specific process of the inspection and processing device for gap detection of the pendulum seat assembly 1 and the valve seat 2 is as follows: The pendulum fixed end 41 is assembled onto the pendulum fixed assembly 14, and the pendulum fixed end 41 is tightened and fixed by the tightener 16, so that the pendulum seat assembly 1 and the valve seat 2 are integrated and in a suspended state. The weight 18 is suspended on the pendulum seat assembly 1, providing downward gravity to the pendulum seat assembly 1 and the valve seat 2, simulating the pendulum seat assembly 1 and the valve seat 2 in a working state. A feeler gauge is inserted between the pendulum assembly 4 and the nozzle 6. When the feeler gauge can pass smoothly between the pendulum assembly 4 and the nozzle 6, the quality of the pendulum valve mating pair is qualified. The thickness of the feeler gauge is 0.015~0.03mm.

[0051] In summary, this invention provides a method for improving the quality of a swing valve mating pair. By detecting the gap between the pendulum assembly and the nozzle on the valve seat, and by performing arc-surface grinding on the nozzle when the pendulum assembly contacts the nozzle's sharp edge, the mating surface of the nozzle is formed into an arc shape after grinding. This prevents the pendulum assembly from hitting the nozzle's sharp edge during swing, thus avoiding edge collapse of the mating surface. This method eliminates the cumulative errors generated during the separate processing of the swing valve and valve seat, ensures uniform gap between the swing valve and valve seat, and guarantees the sharp edge requirements after the mating surface is combined and processed. Furthermore, by assembling the arc-surface-ground nozzle onto the pendulum seat assembly via the valve seat and performing gap detection, the uniformity and consistency of the mating pair gap can be directly detected. Simultaneously, the combined processing method and parameters are optimized in reverse, stabilizing the processing quality and product performance of the mating pair.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A detection method for improving the quality of a swing valve mating pair, characterized in that, Includes the following steps: The pendulum assembly (4) is assembled onto the pendulum support frame (3) via a pin (5) to form a pendulum seat assembly (1). The end of the pendulum seat assembly (1) is then assembled onto the valve seat (2) so that a gap is formed between the pendulum assembly (4) and the nozzle (6) on the valve seat (2). One end of the pendulum assembly (4) is the pendulum fixed end (41), and the other end is the pendulum end (42). A gap is formed between the pendulum end (42) and the nozzle (6) on the valve seat (2). The gap between the pendulum end (42) and the nozzle (6) on the valve seat (2) is in the range of 0.015 to 0.03 mm; The pendulum assembly (4) is ground on the arc surface of the nozzle (6) when the pendulum assembly (4) contacts the tip of the nozzle (6) so that the gap between the pendulum assembly (4) and the nozzle (6) is always maintained. The nozzle (6) is processed by a nozzle arc surface processing device. The nozzle arc surface processing device includes a base (9), two sets of roller support frames (8) and roller assembly (7). The two sets of roller support frames (8) are respectively set on both sides of the base (9). The two ends of the roller assembly (7) are rolled and mounted on the roller support frames (8). The base (9) is also provided with a mounting seat (10). The mounting seat (10) is located directly below the roller assembly (7). The valve seat (2) is mounted on the mounting seat (10). The nozzle (6) on the valve seat (2) is ground by the roller assembly (7). After the nozzle (6) is ground on the arc surface, it is assembled on the pendulum seat assembly (1) through the valve seat (2) for gap detection, and the quality detection of the pendulum valve mating pair is completed. The valve seat (2) is assembled on the pendulum seat assembly (1) and the gap is detected by the detection and processing device. The detection and processing device includes a positioning base plate (11), a support (12), a positioning plate (13), a pendulum fixing assembly (14) and a weight (18). The support (12) is set on the positioning base plate (11), the positioning plate (13) is set on the support (12), and the pendulum fixing assembly (14) is set on the positioning plate (13). The pendulum fixing end (41) of the pendulum assembly (4) of the pendulum seat assembly (1) is assembled on the pendulum fixing assembly (14), so that the pendulum seat assembly (1) and the valve seat (2) are integrated and in a suspended state. The weight (18) is suspended on the pendulum seat assembly (1) through the interlock (17) to provide gravity to the pendulum seat assembly (1). The pendulum seat assembly (1) and valve seat (2) are simulated to be in working condition. A feeler gauge is inserted between the pendulum assembly (4) and the nozzle (6). When the feeler gauge can pass smoothly between the pendulum assembly (4) and the nozzle (6), the quality of the pendulum valve pair is qualified. The thickness of the feeler gauge is 0.015 to 0.03 mm.

2. The detection method for improving the quality of the swing valve mating pair according to claim 1, characterized in that, The roller assembly (7) includes a rotating shaft (71) and a roller (72). The roller (72) is mounted on the rotating shaft (71). The two ends of the rotating shaft (71) are respectively rolled on two sets of roller support frames (8). The roller (72) performs arc surface grinding on the nozzle (6) on the valve seat (2).

3. The detection method for improving the quality of the swing valve mating pair according to claim 2, characterized in that, The process of arc-surface grinding of the nozzle (6) on the valve seat (2) is as follows: Mount the valve seat (2) onto the mounting base (10), check and adjust the lowest point of the roller (72) to the support point of the two sets of roller support frames (8), and lock the two sets of roller support frames (8). Rotate the roller (72) so that the roller (72) contacts the nozzle (6) and grinds the mating surface of the nozzle (6), so that the mating surface of the nozzle (6) forms an arc surface under the action of the rotating roller (72).

4. The detection method for improving the quality of the swing valve mating pair according to claim 1, characterized in that, The pendulum fixing assembly (14) is provided with a smooth pressure block (15), and the bottom end of the pendulum fixing assembly (14) is provided with a tightening device (16). One end of the tightening device (16) extends into the pendulum fixing assembly (14) and abuts against the smooth pressure block (15), so that the smooth pressure block (15) is tightened against the pendulum fixing end (41) by the tightening device (16).

5. The detection method for improving the quality of the swing valve mating pair according to claim 4, characterized in that, The specific process of the detection and processing device for gap detection of the pendulum seat assembly (1) and the valve seat (2) is as follows: the pendulum fixed end (41) is assembled on the pendulum fixed assembly (14), and the pendulum fixed end (41) is tightened and fixed by the tightener (16), so that the pendulum seat assembly (1) and the valve seat (2) are in a suspended state as one unit, and the weight (18) is suspended on the pendulum seat assembly (1), providing downward gravity to the pendulum seat assembly (1) and the valve seat (2).

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