Ignition electric nozzle inspection device and inspection method

Abstract

The ignition plug inspection device comprises a base, an ignition plug clamp is arranged at the first end of the base, a three-axis moving device is arranged at the position, corresponding to the clamping position of the ignition plug clamp, of the second end of the base, and a probe sleeve is arranged at the moving end of the three-axis moving device; a probe assembly is slidably arranged in the probe sleeve, an axial pushing device is arranged at the end, away from the sparking plug clamp, of the probe assembly, an internal expansion part is arranged at the end, close to the sparking plug clamp, of the probe assembly, and the internal expansion part is expanded in the process that the axial pushing device drives the probe assembly to move towards the sparking plug clamp. When the axial pushing device drives the probe assembly to move away from the sparking plug clamp, the internal expansion part is contracted; the sparking plug and the probe can be coaxially aligned automatically and efficiently, the probe is tightly attached to sparking plugs of different inner diameter specifications by adopting an internal expansion structure, and therefore compatible and efficient detection of the sparking plugs of multiple specifications is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ignition electrode inspection, and particularly relates to an ignition electrode inspection device and an inspection method. BACKGROUND

[0002] An aero-engine is the heart of an airplane, and an aero-ignition system is one of important components of the aero-engine. The engine ignition system is a kind of ignition source system for a main combustion chamber and an afterburner, which is composed of an ignition device, an ignition cable and an ignition electrode. The ignition device converts direct current on the airplane into high-voltage electricity, and then releases sparks through the ignition cable and the ignition electrode and ensures that the sparks have enough energy to directly ignite the mixed gas of air and fuel in the engine combustion chamber. The function of the ignition electrode is to generate electric sparks by discharging high-voltage pulse electric energy generated by the ignition device to ignite the oil-gas mixture in the combustion chamber. Therefore, it is necessary to check the performance of the ignition electrode.

[0003] However, the existing technology usually detects the ignition electrode by manually holding a probe to extend into the ignition electrode, so that the probe contacts the ignition electrode, and then the probe is connected with an external detection line and a detection device, and then the ignition electrode is detected. The above detection method relies on manual holding of the probe, which not only consumes time and effort, but also easily causes the probe to be out of alignment with the ignition electrode when the probe is inserted into the ignition electrode, resulting in the probe scratching the internal elements of the ignition electrode. At the same time, since the diameter of the probe is fixed, it is difficult to detect different inner diameters of the ignition electrode.

[0004] Therefore, in view of the above problems in the process of detecting the ignition electrode by the handheld probe in the prior art, the application discloses an ignition electrode inspection device and an inspection method. SUMMARY

[0005] The application discloses an ignition electrode inspection device and an inspection method, which can automatically and efficiently coaxially align the electrode with the probe, and adopt an internal expansion structure to tightly fit the probe with the electrode of different inner diameters, thereby realizing compatible and efficient detection of the electrode of multiple specifications.

[0006] The application is achieved by the following technical solutions: The utility model provides an ignition electrode inspection device, including the base, the first end of base is provided with electrode holder, the second end of base is provided with three -axis movement device on the clamping position of electrode holder, the moving end of three -axis movement device is provided with probe sleeve, the inside of probe sleeve is provided with probe assembly and slides, the one end of probe assembly is provided with axial pushing device away from electrode holder, the one end of probe assembly is provided with inner inflation part near electrode holder, the inner inflation part expands in the process that axial pushing device drives probe assembly moves towards electrode holder, the inner inflation part contracts in the process that axial pushing device drives probe assembly moves away from electrode holder.

[0007] In order to better realize the present application, further, the probe assembly comprises a probe body, a connecting disc, and an inner inflation block, the connecting disc is sleeved on the outer side of the one end of the probe body near the electrode holder, and the inner inflation block is slidably arranged on the connecting disc along the diameter direction through the axis of the probe body; the first wedge block is arranged on the end of the one end of the probe body near the electrode holder, and the second wedge block is arranged on the side of the inner inflation block near the probe body in inclined sliding fit with the first wedge block.

[0008] In order to better realize the present application, further, the radial spring is arranged on the side wall of the one end of the probe body near the electrode holder, and the radial spring is connected with the second wedge block.

[0009] In order to better realize the present application, further, the inside of the probe sleeve is provided with a stepped surface, the outside of the probe assembly is provided with a flange in axial limiting fit with the stepped surface, and the axial spring is arranged between the stepped surface and the flange.

[0010] In order to better realize the present application, further, the axial pushing device comprises an adapter seat, a pushing nut, and a nut rotating device, the adapter seat is installed on the moving end of the three-axis movement device, the probe sleeve is arranged through the adapter seat, the threaded hole is coaxially arranged on the adapter seat corresponding to the one end of the probe sleeve away from the electrode holder, the pushing nut is threadedly arranged in the threaded hole, the first end of the pushing nut is in axial abutment with the outside of the probe assembly, and the second end of the pushing nut extends to the outside of the threaded hole and is in transmission connection with the driving end of the nut rotating device.

[0011] In order to better realize the present application, further, the nut rotating device comprises a rotating motor, a gear ring, and a gear, the rotating motor is installed on the adapter seat, the gear is sleeved on the output shaft of the rotating motor, the gear ring is sleeved on the outside of the second end of the pushing nut, and the gear ring is in meshing connection with the gear.

[0012] In order to better realize the present application, further, the three-axis moving device comprises an axial moving device, a first translation device and a second translation device, the axial moving device is arranged at the second end of the base, the first translation device is arranged on the moving end of the axial moving device and is capable of translating along a first direction, the second translation device is arranged on the translation end of the first translation device and is capable of translating along a second direction, the translation end of the second translation device is provided with a probe sleeve, and the first direction is perpendicular to the second direction.

[0013] In order to better realize the present application, further, the first translation device and the second translation device are of the same structure, and the first translation device comprises a translation slide.

[0014] A method for checking an ignition electrode, comprising the following steps: Step 1, centering and clamping the electrode by means of an electrode clamp, and detecting a first coordinate of the center of the electrode by means of an infrared position sensor; Step 2, inserting the probe assembly into the interior of the probe sleeve, and detecting a second coordinate of the center of the probe assembly by means of the infrared position sensor; Step 3, taking the first coordinate as a reference, calculating the difference between the first coordinate and the second coordinate, and controlling the three-axis moving device to move along three axes based on the difference, so that the second coordinate after movement coincides with the first coordinate; Step 4, pushing the probe assembly towards the direction of the electrode by means of the axial pushing device, so that the inner expansion part at the end of the probe assembly extends into the interior of the electrode, and the inner expansion part expands under the action of the pushing force to tightly contact the inner wall of the electrode; Step 5, fixing the position of the probe assembly, then connecting the probe assembly with an external detection circuit, and detecting the electrode.

[0015] Compared with the prior art, the present application has the following advantages and beneficial effects: The present application centers and clamps the ignition electrode by means of the electrode clamp, then drives the probe sleeve to move along three axes by means of the three-axis moving device, so that the probe assembly in the interior of the probe sleeve is coaxial with the ignition electrode, then axially pushes the probe body by means of the axial pushing device, so that the first wedge block at the end of the probe body extrudes the second wedge block, and then the inner expansion block sleeved around the end of the probe body expands to tightly contact the inner wall of the ignition electrode, thereby being capable of detecting ignition electrodes of different sizes, and avoiding the damage of the ignition electrode caused by manually inserting the probe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the ignition electrode checking device; Figure 2 It is an installation schematic view of the axial pushing device; Figure 3 It isFigure 1 Enlarged view of a portion at point A; Figure 4 for Figure 1 A magnified view of section B.

[0017] Wherein: 1-base; 2-electric nozzle clamp; 3-three-axis moving device; 4-probe sleeve; 5-probe assembly; 6-axial pushing device; 31-axial moving device; 32-first translation device; 33-second translation device; 51-probe body; 52-connecting plate; 53-inner expansion block; 54-radial spring; 55-axial spring; 61-adapter seat; 62-pushing nut; 63-nut rotating device; 100-first wedge; 200-second wedge; 631-rotary motor; 632-gear ring; 633-gear. Detailed Implementation

[0018] Example 1: This embodiment provides an ignition nozzle inspection device, such as... Figure 1 and Figure 2 As shown, the device includes a base 1. A nozzle clamp 2 is provided at the first end of the base 1. A three-axis moving device 3 is provided at the second end of the base 1 corresponding to the clamping position of the nozzle clamp 2. A probe sleeve 4 is provided at the moving end of the three-axis moving device 3. A probe assembly 5 is slidably disposed inside the probe sleeve 4. An axial pushing device 6 is provided at the end of the probe assembly 5 away from the nozzle clamp 2. An inner expansion part is provided at the end of the probe assembly 5 close to the nozzle clamp 2. When the axial pushing device 6 moves the probe assembly 5 toward the nozzle clamp 2, the inner expansion part expands. When the axial pushing device 6 moves the probe assembly 5 away from the nozzle clamp 2, the inner expansion part contracts.

[0019] A method for inspecting an ignition nozzle includes the following steps: Step 1: The electric nozzle is centered and clamped by the electric nozzle clamp 2, and the first coordinate of the center of the electric nozzle is detected by the infrared position sensor; Step 2: Insert the probe assembly 5 into the inside of the probe sleeve 4, and detect the second coordinate of the center of the probe assembly 5 using an infrared position sensor; Step 3: Using the first coordinate as a reference, calculate the difference between the first coordinate and the second coordinate, and control the three-axis moving device 3 to move the three axes based on the difference, so that the second coordinate after the movement coincides with the first coordinate; Step 4: Push the probe assembly 5 towards the electric nozzle using the axial pushing device 6, so that the inner expansion part at the end of the probe assembly 5 extends into the electric nozzle, and the inner expansion part expands under the pushing force to make close contact with the inner wall of the electric nozzle. Step 5: Fix the position of probe assembly 5, and then connect probe assembly 5 to the external detection circuit to detect the electric nozzle.

[0020] Embodiment 2 The embodiment discloses a kind of ignition electrode inspection device, as shown in Figure 3 Probe assembly 5 includes probe body 51, connecting disc 52, inner expansion block 53, the connecting disc 52 is externally sheathed with connecting disc 52 close to the one end of electrode clamp 2, and inner expansion block 53 is slidably arranged on the connecting disc 52 along the diametrical direction through the axis of probe body 51;First wedge 100 is provided on the end of the one end of probe body 51 close to electrode clamp 2, and second wedge 200 is provided on the side of inner expansion block 53 close to probe body 51, which is inclinedly slidably matched with first wedge 100.

[0021] When probe body 51 is adjusted to be coaxial with ignition electrode, i.e. by axial pushing device 6 to push probe body 51 axially, so that first wedge 100 at the end of probe body 51 extrudes second wedge 200, and then second wedge 200 drives inner expansion block 53 to slide in the diametrical direction, to realize the expansion of inner expansion block 53, and finally make inner expansion block 53 closely contact with the inner wall of ignition electrode, to realize the conduction of ignition electrode and external detection circuit, and then realize the detection of ignition electrode.

[0022] Further, radial spring 54 is provided on the side wall of the one end of probe body 51 close to electrode clamp 2, and radial spring 54 is connected with second wedge 200.When first wedge 100 extrudes second wedge 200, radial spring 54 is stretched, and when first wedge 100 no longer extrudes second wedge 200, radial spring 54 rebounds and drives second wedge 200 and inner expansion block 53 to retract, to realize the separation of inner expansion block 53 and ignition electrode.

[0023] Further, the inside of probe sleeve 4 is provided with a stepped surface, the outside of probe assembly 5 is provided with a flange axially limited matched with the stepped surface, and axial spring 55 is arranged between the stepped surface and the flange.When probe assembly 5 is subjected to axial thrust of axial pushing device 6, axial spring 55 is stretched to make probe assembly 5 move axially, and when axial pushing device 6 removes the axial thrust, axial spring 55 rebounds to drive probe assembly 5 to retract and reset.

[0024] The rest of the embodiment is the same as embodiment 1, and thus will not be described again.

[0025] Embodiment 3 The embodiment discloses a kind of ignition electrode inspection device, which is optimized based on embodiment 1 or 2, as shown in Figure 3 And Figure 4As shown, the axial pushing device 6 includes an adapter 61, a pushing nut 62, and a nut rotating device 63. The adapter 61 is mounted on the moving end of the three-axis moving device 3. A probe sleeve 4 is arranged on the adapter 61. A threaded hole is coaxially arranged on the adapter 61 corresponding to the end of the probe sleeve 4 away from the electrode holder 2. The pushing nut 62 is threadedly arranged in the threaded hole. The first end of the pushing nut 62 axially abuts the outer side of the probe assembly 5. The second end of the pushing nut 62 extends to the outside of the threaded hole and is drivingly connected with the driving end of the nut rotating device 63.

[0026] The nut rotating device 63 drives the pushing nut 62 to rotate. The pushing nut 62 is axially moved to push the probe assembly 5 to move axially through the cooperation of the pushing nut 62 and the threaded hole.

[0027] Further, the nut rotating device 63 includes a rotating motor 631, a gear ring 632, and a gear 633. The rotating motor 631 is mounted on the adapter 61. The gear 633 is arranged on the output shaft of the rotating motor 631. The gear ring 632 is arranged on the second end of the pushing nut 62. The gear ring 632 is meshingly connected with the gear 633.

[0028] The rotating motor 631 drives the gear ring 632 to rotate through the gear 633, thereby driving the pushing nut 62 to rotate. The pushing nut 62 is axially moved to push the probe assembly 5 to move axially through the cooperation of the pushing nut 62 and the threaded hole.

[0029] The remaining parts of the embodiment are the same as those of Embodiment 1 or 2, and thus are not described again.

[0030] Embodiment 4: The embodiment discloses an ignition electrode inspection device, which is optimized on the basis of any one of Embodiments 1-3, as shown in Figure 1 and Figure 2 As shown, the three-axis moving device 3 includes an axial moving device 31, a first translation device 32, and a second translation device 33. The axial moving device 31 is arranged on the second end of the base 1. The first translation device 32 is arranged on the lifting end of the axial moving device 31 and translates along a first direction. The second translation device 33 is arranged on the translation end of the first translation device 32 and translates along a second direction. The probe sleeve 4 is arranged on the translation end of the second translation device 33. The first direction is perpendicular to the second direction.

[0031] The axial movement device 31 comprises a translation table, a screw rod, a nut seat, a driving motor and a slide rail. The translation table is slidingly installed on the slide rail in a direction parallel to the axis of the ignition electrode. The slide rail is provided with the screw rod on one side in parallel rotation. The screw rod is externally provided with the nut seat. The nut seat is connected to one side of the translation table through a screw. The screw rod is driven to rotate by the motor, and the translation table is driven to translate along the slide rail through the nut seat, so as to drive the probe sleeve 4 to axially approach the ignition electrode.

[0032] The first translation device 32 and the second translation device 33 are arranged on the translation table and driven to axially feed by the translation table. The first translation device 32 and the second translation device 33 adopt high-precision translation slides, and the sliding accuracy of the high-precision translation slides is less than or equal to 0.2 mm. The first translation device 32 and the second translation device 33 have the same structure, but have different arrangement directions. The first translation device 32 moves in a first direction in a plane perpendicular to the axis of the ignition electrode, and the second translation device 33 moves in a second direction in the plane perpendicular to the axis of the ignition electrode. The second direction is perpendicular to the first direction. The first translation device 32 and the second translation device 33 drive the probe sleeve 4 to move to a coaxial position of the ignition electrode through translation.

[0033] Further, the first translation device 32 and the second translation device 33 have the same structure. The first translation device 32 comprises a high-precision translation slide.

[0034] The remaining part of the embodiment is the same as any one of embodiments 1-3, and thus will not be described again.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change based on the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. An igniter tip inspection apparatus characterized by comprising: The utility model provides a probe assembly and three -axis moving device, the probe assembly includes base (1), the first end of base (1) is provided with electric mouth clamp (2), the second end of base (1) is provided with three -axis moving device (3) on the clamping position corresponding electric mouth clamp (2), the moving end of three -axis moving device (3) is provided with probe sleeve (4), the inside of probe sleeve (4) is provided with probe assembly (5) and slides, the one end of probe assembly (5) away from electric mouth clamp (2) is provided with axial pushing device (6), the one end of probe assembly (5) close to electric mouth clamp (2) is provided with inner expansion part, the inner expansion part expands in the process that axial pushing device (6) drives probe assembly (5) to move towards electric mouth clamp (2), the inner expansion part contracts in the process that axial pushing device (6) drives probe assembly (5) to move away from electric mouth clamp (2).

2. An igniter tip inspection device as defined in claim 1, wherein The probe assembly (5) includes a probe body (51), a connecting disc (52), and an inner expansion block (53). The connecting disc (52) is externally sleeved on the one end of the probe body (51) close to the electric mouth clamp (2). The inner expansion block (53) is slidably arranged on the connecting disc (52) along the diameter direction passing through the axis of the probe body (51). The one end of the probe body (51) close to the electric mouth clamp (2) is provided with a first wedge block (100). The side of the inner expansion block (53) close to the probe body (51) is provided with a second wedge block (200) that is obliquely and slidably connected with the first wedge block (100).

3. An igniter tip inspection apparatus as defined in claim 2, wherein A radial spring (54) is arranged on the side wall of the one end of the probe body (51) close to the electric mouth clamp (2). The radial spring (54) is connected with the second wedge block (200).

4. An igniter tip inspection apparatus as defined in claim 3, wherein The inside of the probe sleeve (4) is provided with a stepped surface. The outside of the probe assembly (5) is provided with a flange that is axially limited with the stepped surface. An axial spring (55) is arranged between the stepped surface and the flange.

5. An igniter tip inspection apparatus according to any one of claims 1-4, wherein The axial pushing device (6) includes an adapter seat (61), a pushing nut (62), and a nut rotating device (63). The adapter seat (61) is installed on the moving end of the three-axis moving device (3). The probe sleeve (4) is arranged through the adapter seat (61). A threaded hole is coaxially arranged on the adapter seat (61) corresponding to the one end of the probe sleeve (4) away from the electric mouth clamp (2). The pushing nut (62) is threadedly arranged in the threaded hole. The first end of the pushing nut (62) is axially abutted with the outside of the probe assembly (5). The second end of the pushing nut (62) extends to the outside of the threaded hole and is drivingly connected with the driving end of the nut rotating device (63).

6. An igniter tip inspection apparatus as defined in claim 5, wherein The nut rotating device (63) includes a rotating motor (631), a gear ring (632), and a gear (633). The rotating motor (631) is installed on the adapter seat (61). The output shaft of the rotating motor (631) is sleeved with the gear (633). The second end of the pushing nut (62) is externally sleeved with the gear ring (632). The gear ring (632) is meshingly connected with the gear (633).

7. An igniter tip inspection apparatus according to any one of claims 1-4, wherein The three-axis moving device (3) comprises an axial moving device (31), a first translation device (32) and a second translation device (33), the axial moving device (31) is arranged at the second end of the base (1), the moving end of the axial moving device (31) is provided with the first translation device (32) which translates along a first direction, the translation end of the first translation device (32) is provided with the second translation device (33) which translates along a second direction, the translation end of the second translation device (33) is provided with the probe sleeve (4), and the first direction is perpendicular to the second direction.

8. An igniter tip inspection apparatus as defined in claim 7, wherein The first translation device (32) and the second translation device (33) are the same in structure, and the first translation device (32) comprises a translation sliding table.

9. A method of checking an ignition electrode, implemented based on the ignition electrode checking device according to any one of claims 1 to 8, characterized by, The method comprises the following steps: Step 1, centering and clamping the electrode nozzle by the electrode nozzle clamp (2), and detecting the first coordinate of the center of the electrode nozzle by an infrared position sensor; Step 2, inserting the probe assembly (5) into the inside of the probe sleeve (4), and detecting the second coordinate of the center of the probe assembly (5) by an infrared position sensor; Step 3, taking the first coordinate as a reference, calculating the difference between the first coordinate and the second coordinate, and controlling the three-axis moving device (3) to move in three axes based on the difference, so that the second coordinate after moving coincides with the first coordinate; Step 4, pushing the probe assembly (5) towards the direction close to the electrode nozzle by the axial pushing device (6), so that the inner expansion part at the end of the probe assembly (5) extends into the inside of the electrode nozzle, and the inner expansion part expands under the action of the pushing force to tightly contact with the inner wall of the electrode nozzle; Step 5, fixing the position of the probe assembly (5), and then connecting the probe assembly (5) with external detection lines to detect the electrode nozzle.

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