Parts repair workbench and workbench using method

Abstract

The present invention relates to the technical field of ship repair, and in particular to a parts repair workbench and a method for using the workbench. The parts repair workbench includes a table top body, a stainless steel covering plate laid on the table top body to form a repair workbench table top, and a workbench column arranged below the table top body. A number of tool cabinets are arranged adjacent to each other in sequence below the table top body; wherein, at least one of the tool cabinets is configured as a drawer-type tray structure; except for the tool cabinet with a drawer-type tray structure, the other tool cabinets adopt a double-opening or single-opening cabinet door structure, and the double-opening or single-opening cabinet door structure is provided with a cabinet door handle lock pin accessory; a compressed air pipeline is arranged along the circumferential side of the table top body, and a number of quick connectors are arranged at intervals on the compressed air pipeline. The present invention reduces the labor intensity of operators and improves the efficiency and quality of repair operations.

Description

Technical Field

[0001] The invention relates to the technical field of ship repair, and in particular to a parts repair workbench and a method for using the workbench. Background Art

[0002] For a long time, the measurement and repair of the main and auxiliary engine parts (such as cylinder heads, rocker arm seats, intake and exhaust valve stems, connecting rods, etc.) in the company's ship repair workshop have been carried out on the ground or on ground pads. The construction workers have been squatting or bending over for a long time, which has brought great fatigue load to the body. In the construction process, the tools are not placed in a centralized and fixed point, which causes serious waste of work in the production preparation process. In addition, the scattered parts are placed randomly without fixed points, which is inconvenient to identify. The overall site is dirty, messy and poor. Therefore, it is necessary to design and manufacture a main and auxiliary engine parts repair workbench to solve the above problems.

[0003] In addition, for some parts with a large number of repairs, the inner diameter of the parts was measured using general measuring tools in the past. The measurement accuracy is greatly affected by the operator's skills, the measurement stability is poor, and the measurement efficiency is also low. Therefore, it is necessary to improve the measurement stability and efficiency through technical improvements. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a parts repair workbench and a method for using the workbench, aiming to reduce the labor intensity of operators and improve the efficiency and quality of repair work. The specific technical solution is as follows:

[0005] A parts repair workbench comprises a workbench main body, a stainless steel covering plate laid on the workbench main body to form a repair workbench workbench surface, and a workbench column arranged below the workbench main body, wherein a number of tool cabinets are arranged adjacent to each other in sequence below the workbench main body; wherein at least one of the tool cabinets is arranged as a drawer-type tray structure; except for the tool cabinet with the drawer-type tray structure, the other tool cabinets adopt a double-opening or single-opening cabinet door structure, and the double-opening or single-opening cabinet door structure is provided with a cabinet door handle lock pin accessory; a compressed air pipeline is arranged along the circumferential side of the workbench main body, and a number of quick connectors are arranged at intervals on the compressed air pipeline.

[0006] As a preferred embodiment of the present invention, the parts repair workbench is installed on the ground of a factory repair workshop, a compressed air supply pipe is buried on the ground of the repair workshop, the compressed air supply pipe is connected to the compressed air source of the factory, and the compressed air supply pipe is connected to the compressed air pipeline through a pipeline.

[0007] In order to facilitate the rapid and accurate measurement of the inner holes of parts, a further improved solution is: a number of repair stations are arranged in sequence on the surface of the repair workbench, and the repair stations include inspection stations. A pneumatic go / no-go gauge unit for rapid measurement of the inner holes of parts is arranged on the inspection station. The pneumatic go / no-go gauge unit includes an MCU controller, an electronic pneumatic measuring instrument connected to the MCU controller, a cylindrical pneumatic probe connected to the electronic pneumatic measuring instrument through a pneumatic pipeline, and a servo electric push rod installed at the back of the repair workbench and connected to the MCU controller. The telescopic rod of the servo electric push rod passes upward through the repair workbench and is upright above the surface of the repair workbench. A micro switch is also arranged on the top of the telescopic rod of the servo electric push rod, and the micro switch is connected to the MCU controller.

[0008] In order to improve the degree of automation of measurement, a positioning plate is provided at the top of the telescopic rod of the servo electric push rod, a countersunk hole is provided in the middle of the positioning plate, the micro switch is installed in the countersunk hole of the positioning plate, and the micro contact of the micro switch is higher than the upper plane of the positioning plate.

[0009] In the present invention, the cylindrical pneumatic probe includes a cylindrical plug gauge that matches the inner hole clearance of a part during detection, a handle connected to the cylindrical plug gauge, an air path distribution cavity arranged inside the cylindrical plug gauge, a plurality of air outlet holes distributed circumferentially on the outer circle of the cylindrical plug gauge and connected to the air path distribution cavity, an air channel connected to the air path distribution cavity is arranged on the handle, and the air channel is connected to the electronic pneumatic measuring instrument through a pneumatic pipeline.

[0010] Different from the conventional cylindrical plug gauge with a through end and a stop end, the cylindrical plug gauge in the present invention is completely matched with the inner hole of the part with a large clearance, and relies on a pneumatic measurement method to dynamically detect whether the inner diameter size is qualified. When the cylindrical plug gauge moves down to the position where the size detection fails, it will be "stuck" by the telescopic rod of the servo electric push rod and cannot move further down. Only when the size detection is qualified will the telescopic rod of the servo electric push rod gradually move down and give way to allow the cylindrical plug gauge to pass smoothly through the inner hole of the part.

[0011] During measurement, the operator holds the handle of the cylindrical plug gauge and inserts the cylindrical plug gauge into the inner hole of the part to simulate the conventional cylindrical plug gauge detection method for detection. The cylindrical plug gauge presses the micro switch on the top of the telescopic rod on the servo electric push rod, so that the telescopic rod of the servo electric push rod moves downward at a certain detection speed. When the cylindrical plug gauge can move downward smoothly in the inner hole of the part, it indicates that the inner diameter size of the part is qualified; if the telescopic rod of the servo electric push rod stops moving downward during the detection process, the cylindrical plug gauge is blocked by the telescopic rod and cannot pass smoothly through the inner hole of the part, which indicates that the inner diameter size of the part is unqualified.

[0012] The movement of the telescopic rod of the servo electric push rod is controlled by the MCU controller. During the measurement process, the MCU controller obtains the dynamic size of the inner diameter of the part through the electronic pneumatic measuring instrument. When the inner diameter of the part is found to be out of tolerance, the telescopic rod of the servo electric push rod stops to block the downward movement of the cylindrical plug gauge, which is equivalent to the cylindrical plug gauge being stuck, so that the operator knows that the inner diameter test of the part is unqualified. If the dynamic size of the inner diameter of the part obtained by the electronic pneumatic measuring instrument is always qualified during the test, the telescopic rod of the servo electric push rod will continue to move down at the set measurement speed until the set limit position, so that the cylindrical plug gauge can pass smoothly through the inner hole of the part, so that the operator knows that the inner diameter test result of the part is qualified.

[0013] In the present invention, the air source used by the pneumatic go / no-go gauge unit comes from the compressed air pipeline, and an automatic pressure control valve is provided on the compressed air pipeline.

[0014] In order to improve the accuracy of measuring the inner hole of a part, the electronic pneumatic measuring instrument is also equipped with a calibration comparison circle for calibrating the accuracy of the cylindrical pneumatic probe. The calibration comparison circle is used to calibrate the accuracy of the cylindrical pneumatic probe before measurement.

[0015] As a further improvement of the present invention, the upper end surface of the positioning plate is provided with a permanent magnet ring for magnetically attracting the lower end surface of the cylindrical pneumatic probe during measurement.

[0016] The lower end surface of the cylindrical pneumatic probe is magnetically attracted by the permanent magnet ring, so that the operator does not need to hold the handle all the time during the detection process, thereby achieving automatic measurement.

[0017] A method for using a parts repair workbench includes using a pneumatic go / no-go gauge unit on a repair station to quickly detect the inner hole of a part. The detection method is as follows:

[0018] (1) Calibration before measurement: According to the part to be tested, select a calibration comparison circle with the same inner diameter as the part to be tested, insert the cylindrical pneumatic probe into the inner hole of the calibration comparison circle, and perform precision calibration on the cylindrical pneumatic probe;

[0019] (2) Parts installation: Place the parts to be inspected at the inspection position of the repair station, so that the telescopic rod of the servo electric linear actuator is placed roughly in the center of the inner hole of the part. If necessary, place equal-height blocks under the part. Adjust the height of the top of the telescopic rod on the servo electric linear actuator to the height corresponding to the starting measurement position, and set the telescopic range of the telescopic rod on the servo electric linear actuator through the MCU controller so that it corresponds to the upper and lower position detection range of the inner hole of the part.

[0020] (3) Part inner diameter measurement: Hold the handle of the cylindrical pneumatic probe with your hand, place the cylindrical plug gauge part of the cylindrical pneumatic probe into the inner hole of the part, and make the lower end surface of the cylindrical plug gauge flush with the upper plane of the positioning plate at the top of the telescopic rod on the servo electric push rod. At this time, the micro switch on the positioning plate is pressed and contacted by the lower end surface of the cylindrical plug gauge and actuated. After the MCU controller detects the action signal of the micro switch, the MCU controller starts the on-off scale pseudo-detection mode and drives the electronic pneumatic measuring instrument to start detecting the inner hole size of the part. If no size deviation is found, the telescopic rod of the servo electric push rod descends at a certain measurement speed, and the cylindrical plug gauge moves downward synchronously with the descent of the telescopic rod for dynamic measurement;

[0021] (4) Determination of test results: If no dimensional deviation is found within the entire detection range of the upper and lower positions of the inner hole of the part, the cylindrical plug gauge moves smoothly from top to bottom within the entire detection range of the upper and lower positions of the inner hole of the part, and the size of the inner hole of the part is determined to be qualified; if the cylindrical plug gauge is found to be out of tolerance when moving downward in the inner hole of the part for measurement, the MCU controller immediately controls the telescopic rod of the servo electric push rod to stop moving, and the cylindrical plug gauge is blocked by the telescopic rod and cannot move downward any further, and the size of the inner hole of the part is determined to be unqualified and an alarm is issued.

[0022] In the present invention, the MCU controller is provided with two detection modes, the two detection modes include a full-range detection alarm and recording mode and a pass-stop scale simulated detection mode, and the two detection modes can be selected or used in combination; when measuring in the full-range detection alarm and recording mode, if it is found that the inner hole size of the part is out of tolerance at a certain position, an alarm is issued, and at the same time, the telescopic rod of the servo electric push rod continues to move downward, so that the cylindrical pneumatic probe can continue to detect; after the detection is completed, the inner diameter size of each position in the detection process is recorded by the MCU controller, and then a curve chart of the upper and lower positions of the part and the corresponding inner diameter sizes at each upper and lower positions is formed, and the curve chart is output through a printing device to form a part inner diameter size detection report.

[0023] The beneficial effects of the present invention are:

[0024] First, with the parts repair workbench and the method for using the workbench of the present invention, construction workers do not need to squat or bend for a long time when performing repair work, thereby reducing the labor intensity of the repair work.

[0025] Secondly, with the parts repair workbench and the method for using the workbench of the present invention, tools can be placed at a centralized location, thus improving the efficiency of production preparation and the 5S environment of the production site.

[0026] Third, a parts repair workbench and a method for using the workbench of the present invention, wherein a pneumatic go / no-go gauge unit is provided on the workbench, which can simulate the traditional cylindrical plug gauge to quickly detect the inner diameter size of the part, thereby improving the detection accuracy and detection stability compared with the general measuring tools; and because the cylindrical plug gauge in the pneumatic go / no-go gauge unit and the inner hole of the part are completely matched with a large clearance, the disadvantage that the traditional cylindrical plug gauge is prone to friction and wear, thereby affecting the measurement accuracy and even causing friction damage to the surface of the inner hole of the part can be overcome.

[0027] Fourth, a parts repair workbench and a method for using the workbench of the present invention are provided with a pass-and-stop scale pseudo-detection mode and a full-process detection alarm and recording mode. The pass-and-stop scale pseudo-detection mode is convenient, intuitive and efficient to operate; the full-process detection alarm and recording mode can output the inner diameter size of each axial position of the part's inner hole, and the inner diameter size situation at each position can be fully understood through the curve chart of the inner diameter size, thereby greatly facilitating subsequent repair operations of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a parts repair workbench of the present invention;

[0029] Figure 2 yes Figure 1 A top view of

[0030] Figure 3 yes Figure 1 Left view of

[0031] Figure 4 is Figure 1 Schematic diagram of a pneumatic go / no-go gauge unit being provided at a repair station of a parts repair workbench to achieve rapid measurement of the inner hole of a part.

[0032] In the figure: 1. table body, 2. stainless steel cover plate, 3. workbench column, 4. tool cabinet, 5. drawer type tray, 6. double-opening or single-opening cabinet door, 7. cabinet door handle lock pin accessories, 8. compressed air pipeline, 9. quick connector, 10. (ground) compressed air supply pipe, 11. stainless steel angle iron around the edge, 12. pneumatic go / no-go gauge unit, 13. electronic pneumatic measuring instrument, 14. pneumatic pipeline, 15. cylindrical pneumatic probe, 16. servo electric push rod, 17. telescopic rod, 18. micro switch, 19. positioning plate, 20. countersunk hole, 21. micro contact, 22. cylindrical plug gauge, 23. handle, 24. air distribution chamber, 25. air outlet, 26. air duct, 27. calibration comparison circle, 28. permanent magnet circle, 33. detection station, 34. equal height block, 35. parts. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0034] Embodiment 1:

[0035] like Figures 1 to 4 The figure shows an embodiment of a parts repair workbench of the present invention, comprising a table top body 1 and a stainless steel covering plate 2 laid on the table top body 1 to form a repair workbench table top, a workbench column 3 arranged below the table top body 1, and a number of tool cabinets 4 are arranged adjacent to each other in sequence below the table top body 1; wherein, at least one of the tool cabinets 4 is configured as a drawer-type tray 5 structure; except for the tool cabinet 4 with the drawer-type tray 5 structure, the other tool cabinets 4 adopt a double-opening or single-opening cabinet door 6 structure, and the double-opening or single-opening cabinet door 6 structure is provided with a cabinet door handle lock pin accessory 7; a compressed air pipeline 8 is arranged along the circumferential side of the table top body 1, and a number of quick connectors 9 are arranged at intervals on the compressed air pipeline 8.

[0036] As a preferred solution of this embodiment, the parts repair workbench is installed on the ground of the factory repair workshop, and a compressed air supply pipe 10 is buried in the ground of the repair workshop. The compressed air supply pipe 10 is connected to the compressed air source of the factory, and the compressed air supply pipe 10 is connected to the compressed air pipeline 8 through a pipeline.

[0037] In order to facilitate the rapid and accurate measurement of the inner holes of parts, a further improved solution is as follows: a number of repair stations are arranged in sequence on the surface of the repair workbench, and the repair stations include an inspection station 33, and a pneumatic go / no-go gauge unit 12 for rapidly measuring the inner holes of parts 35 is arranged on the inspection station 33, and the pneumatic go / no-go gauge unit 12 includes an MCU controller, an electronic pneumatic measuring instrument 13 connected to the MCU controller, a cylindrical pneumatic probe 15 connected to the electronic pneumatic measuring instrument 13 via a pneumatic pipeline 14, and a servo electric push rod 16 installed at the back of the repair workbench and connected to the MCU controller, a telescopic rod 17 of the servo electric push rod 16 passes upward through the repair workbench and is vertically arranged above the surface of the repair workbench, and a micro switch 18 is also arranged at the top of the telescopic rod 17 of the servo electric push rod 16, and the micro switch 18 is connected to the MCU controller.

[0038] In order to improve the degree of automation of measurement, a positioning plate 19 is provided at the top of the telescopic rod 17 of the servo electric push rod 16, and a countersunk hole 20 is provided in the middle of the positioning plate 19. The micro switch 18 is installed in the countersunk hole 20 of the positioning plate 19, and the micro contact 21 of the micro switch 18 is higher than the upper plane of the positioning plate 19.

[0039] In this embodiment, the cylindrical pneumatic probe 15 includes a cylindrical plug gauge 22 that matches the inner hole clearance of the part 35 during detection, a handle 23 connected to the cylindrical plug gauge 22, an air path distribution cavity 24 arranged inside the cylindrical plug gauge 22, and a plurality of air outlet holes 25 distributed circumferentially on the outer circle of the cylindrical plug gauge 22 and connected to the air path distribution cavity 24. An air channel 26 connected to the air path distribution cavity 24 is arranged on the handle 23, and the air channel 26 is connected to the electronic pneumatic measuring instrument 13 through the pneumatic pipeline 14.

[0040] Different from the conventional cylindrical plug gauge with a through end and a stop end, the cylindrical plug gauge 22 in this embodiment is completely matched with the inner hole of the part 35 with a large clearance, and relies on a pneumatic measurement method to dynamically detect whether the inner diameter size is qualified. When the cylindrical plug gauge 22 moves down to the position where the size detection fails, it will be "stuck" by the telescopic rod 17 of the servo electric push rod 16 and cannot move further down. Only when the size detection is qualified will the telescopic rod 17 of the servo electric push rod 16 gradually move down and give way to allow the cylindrical plug gauge 22 to pass smoothly through the inner hole of the part 35.

[0041] During measurement, the operator holds the handle 23 of the cylindrical plug gauge 22 and inserts the cylindrical plug gauge 22 into the inner hole of the part 35 to simulate the conventional cylindrical plug gauge detection method for detection. The cylindrical plug gauge 22 presses the micro switch 18 on the top of the telescopic rod 17 on the servo electric push rod 16, so that the telescopic rod 17 of the servo electric push rod 16 moves downward at a certain detection speed. When the cylindrical plug gauge 22 can move downward smoothly in the inner hole of the part 35, it indicates that the inner diameter size of the part 35 is qualified; if the telescopic rod 17 of the servo electric push rod 16 stops moving downward during the detection process, the cylindrical plug gauge 22 is blocked by the telescopic rod 17 and cannot pass smoothly in the inner hole of the part 35, which indicates that the inner diameter size of the part 35 is unqualified.

[0042] The movement of the telescopic rod 17 of the servo electric push rod 16 is controlled by the MCU controller. During the measurement process, the MCU controller obtains the dynamic size of the inner diameter of the part through the electronic pneumatic measuring instrument 13. When the inner diameter of the part is found to be out of tolerance, the telescopic rod 17 of the servo electric push rod 16 stops to block the downward movement of the cylindrical plug gauge 22, which is equivalent to the cylindrical plug gauge 22 being stuck, so that the operator knows that the inner diameter test of the part 35 is unqualified. If the dynamic size of the inner diameter of the part obtained by the electronic pneumatic measuring instrument 13 during the test is always qualified, the telescopic rod 17 of the servo electric push rod 16 will continue to move down at the set measurement speed until the set limit position, so that the cylindrical plug gauge 22 can pass smoothly through the inner hole of the part 35, so that the operator knows that the inner diameter test result of the part 35 is qualified.

[0043] In this embodiment, the air source used by the pneumatic go / no-go gauge unit 12 comes from the compressed air pipeline 8, and the compressed air pipeline 8 is provided with an automatic pressure control valve.

[0044] In order to improve the accuracy of measuring the inner hole of the part 35, the electronic pneumatic measuring instrument 13 is also equipped with a calibration comparison circle 27 for calibrating the accuracy of the cylindrical pneumatic probe 15. The calibration comparison circle 27 is used to calibrate the accuracy of the cylindrical pneumatic probe 15 before measurement.

[0045] As a further improvement of this embodiment, the upper end surface of the positioning plate 19 is provided with a permanent magnet ring 28 for magnetically attracting the lower end surface of the cylindrical pneumatic probe 15 during measurement.

[0046] The lower end surface of the cylindrical pneumatic probe 15 is magnetically attracted by the permanent magnet ring 28, so that the operator does not need to hold the handle 23 all the time during the detection process, and automatic measurement is achieved.

[0047] Embodiment 2:

[0048] A method for using the workbench of the parts repair workbench of Example 1 includes using the pneumatic go / no-go gauge unit 12 on the repair station to quickly detect the inner hole of the part 35, and the detection method is as follows:

[0049] (1) Calibration before measurement: According to the part 35 to be tested, select the calibration comparison circle 27 with the same specification inner diameter, insert the cylindrical pneumatic probe 15 into the inner hole of the calibration comparison circle 27, and perform the accuracy calibration of the cylindrical pneumatic probe 15;

[0050] (2) Parts installation: Place the parts to be inspected at the inspection position of the repair station, so that the telescopic rod 17 of the servo electric push rod 16 is placed at the approximate center of the inner hole of the part, and if necessary, place a height equalization block 24 under the part; adjust the height of the top of the telescopic rod 17 on the servo electric push rod 16 to a height corresponding to the starting measurement position, and set the telescopic range of the telescopic rod 17 on the servo electric push rod 16 through the MCU controller so that it corresponds to the upper and lower position detection range of the inner hole of the part 35;

[0051] (3) Part inner diameter measurement: Hold the handle 23 of the cylindrical pneumatic probe 15 by hand, place the cylindrical plug gauge 22 of the cylindrical pneumatic probe 15 into the inner hole of the part, and make the lower end surface of the cylindrical plug gauge 22 flush with the upper plane of the positioning plate 19 at the top of the telescopic rod 17 on the servo electric push rod 16. At this time, the micro switch 18 on the positioning plate 19 is pressed and contacted by the lower end surface of the cylindrical plug gauge 22 and actuated. After the MCU controller detects the action signal of the micro switch 18, the MCU controller starts the on-off scale pseudo-detection mode and drives the electronic pneumatic measuring instrument 13 to start detecting the inner hole size of the part 35. If no size deviation is found, the telescopic rod 17 of the servo electric push rod 16 descends at a certain measurement speed, and the cylindrical plug gauge 22 moves downward synchronously with the descent of the telescopic rod 17 for dynamic measurement;

[0052] (4) Determination of the test result: If no dimensional deviation is found within the entire detection range of the upper and lower positions of the inner hole of the part 35, the cylindrical plug gauge 22 moves smoothly from top to bottom within the entire detection range of the upper and lower positions of the inner hole of the part, and the size of the inner hole of the part is determined to be qualified; if the cylindrical plug gauge 22 is found to be out of tolerance when moving downward in the inner hole of the part for measurement, the MCU controller immediately controls the telescopic rod 17 of the servo electric push rod 16 to stop moving, and the cylindrical plug gauge 22 is blocked by the telescopic rod 17 and cannot move downward any further, and the size of the inner hole of the part is determined to be unqualified and an alarm is issued.

[0053] In this embodiment, the MCU controller is provided with two detection modes, which include a full-range detection alarm and recording mode and a pass-stop scale simulated detection mode, and the two detection modes can be used selectively or in combination; when measuring in the full-range detection alarm and recording mode, if it is found that the inner hole size of the part is out of tolerance at a certain place, an alarm is issued, and at the same time, the telescopic rod 17 of the servo electric push rod 16 continues to move downward, so that the cylindrical pneumatic probe can continue to detect; after the detection is completed, the inner diameter size of each position during the detection process is recorded by the MCU controller, and then a curve chart of the upper and lower positions of the part and the corresponding inner diameter sizes at each upper and lower positions is formed, and the curve chart is output through a printing device to form a part inner diameter size detection report.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A parts repair workbench, characterized in that: The invention comprises a table top body, a stainless steel covering plate laid on the table top body to form a repair workbench table top, and a workbench column arranged below the table top body, wherein a number of tool cabinets are arranged adjacent to each other in sequence below the table top body; wherein at least one of the tool cabinets is arranged as a drawer-type tray structure; except for the tool cabinet with a drawer-type tray structure, the other tool cabinets adopt a double-opening or single-opening cabinet door structure, and the double-opening or single-opening cabinet door structure is provided with a cabinet door handle lock pin accessory; a compressed air pipeline is arranged along the circumferential side position of the table top body, and a number of quick connectors are arranged at intervals on the compressed air pipeline; a number of repair stations are arranged in sequence on the repair workbench table, and the repair stations include an inspection station, and a pneumatic go / no-go gauge unit for quickly measuring the inner hole of a part is arranged on the inspection station, and the pneumatic go / no-go gauge unit includes an MCU controller, an electronic pneumatic measuring instrument connected to the MCU controller, and a cylindrical gas gauge connected to the electronic pneumatic measuring instrument through a pneumatic pipeline. A dynamic measuring head, a servo electric push rod installed at the back of the repair workbench and connected to the MCU controller, the telescopic rod of the servo electric push rod passes through the repair workbench upward and is vertically arranged above the table top of the repair workbench, and a micro switch is also arranged at the top of the telescopic rod of the servo electric push rod, and the micro switch is connected to the MCU controller; a positioning plate is arranged at the top of the telescopic rod of the servo electric push rod, a countersunk hole is arranged in the middle of the positioning plate, the micro switch is installed in the countersunk hole of the positioning plate, and the micro contact of the micro switch is higher than the upper plane of the positioning plate; the cylindrical pneumatic measuring head includes a cylindrical plug gauge that matches the inner hole clearance of the part during detection, a handle connected to the cylindrical plug gauge, an air path distribution cavity arranged inside the cylindrical plug gauge, and a number of air outlet holes distributed circumferentially on the outer circle of the cylindrical plug gauge and connected to the air path distribution cavity, and an airway connected to the air path distribution cavity is arranged on the handle, and the airway is connected to the electronic pneumatic measuring instrument through a pneumatic pipeline.

2. A parts repair workbench according to claim 1, characterized in that: The parts repair workbench is installed on the ground of a factory repair shop. A compressed air supply pipe is buried on the ground of the repair shop. The compressed air supply pipe is connected to the compressed air source of the factory. The compressed air supply pipe is connected to the compressed air pipeline through a pipeline.

3. A parts repair workbench according to claim 1, characterized in that: The air source used by the pneumatic go / no-go gauge unit comes from the compressed air pipeline, and an automatic pressure control valve is provided on the compressed air pipeline.

4. A parts repair workbench according to claim 1, characterized in that: The electronic pneumatic measuring instrument is also equipped with a calibration comparison circle for calibrating the accuracy of the cylindrical pneumatic probe. The calibration comparison circle is used to calibrate the accuracy of the cylindrical pneumatic probe before measurement.

5. A parts repair workbench according to claim 1, characterized in that: The upper end surface of the positioning plate is provided with a permanent magnet ring for magnetically attracting the lower end surface of the cylindrical pneumatic probe during measurement.

6. A method for using the parts repair workbench according to any one of claims 1 to 5, characterized in that: This includes using the pneumatic go / no-go gauge unit on the repair station to quickly inspect the inner holes of the parts. The inspection method is as follows: (1) Calibration before measurement: According to the part to be tested, select a calibration comparison circle with the same inner diameter as the corresponding specification, insert the cylindrical pneumatic probe into the inner hole of the calibration comparison circle, and perform accuracy calibration on the cylindrical pneumatic probe; (2) Parts installation: Place the parts to be inspected at the inspection position of the repair station, so that the telescopic rod of the servo electric linear actuator is placed in the center of the inner hole of the part, and place equal-height blocks under the part; adjust the height of the top of the telescopic rod on the servo electric linear actuator to the height corresponding to the starting measurement position, and set the telescopic range of the telescopic rod on the servo electric linear actuator through the MCU controller so that it corresponds to the upper and lower position detection range of the inner hole of the part; (3) Part inner diameter measurement: Hold the handle of the cylindrical pneumatic probe with your hand, place the cylindrical plug gauge part of the cylindrical pneumatic probe into the inner hole of the part, and make the lower end surface of the cylindrical plug gauge flush with the upper plane of the positioning plate at the top of the telescopic rod on the servo electric push rod. At this time, the micro switch on the positioning plate is pressed and contacted by the lower end surface of the cylindrical plug gauge and actuated. After the MCU controller detects the action signal of the micro switch, the MCU controller starts the on-off scale pseudo-detection mode and drives the electronic pneumatic measuring instrument to start detecting the inner hole size of the part. If no size deviation is found, the telescopic rod of the servo electric push rod descends at a certain measurement speed, and the cylindrical plug gauge moves downward synchronously with the descent of the telescopic rod for dynamic measurement; (4) Determination of test results: If no dimensional deviation is found within the entire detection range of the upper and lower positions of the inner hole of the part, the cylindrical plug gauge moves smoothly from top to bottom within the entire detection range of the upper and lower positions of the inner hole of the part, and the size of the inner hole of the part is determined to be qualified; if the cylindrical plug gauge is found to be out of tolerance when moving downward in the inner hole of the part for measurement, the MCU controller immediately controls the telescopic rod of the servo electric push rod to stop moving, and the cylindrical plug gauge is blocked by the telescopic rod and cannot move downward any further, and the size of the inner hole of the part is determined to be unqualified and an alarm is issued.

7. The method for using a parts repair workbench according to claim 6, characterized in that: The MCU controller is provided with two detection modes, which include a full-range detection alarm and recording mode and a pass-stop scale quasi-detection mode, and the two detection modes can be used selectively or in combination; when measuring in the full-range detection alarm and recording mode, if it is found that the inner hole size of the part is out of tolerance at a certain position, an alarm is issued, and at the same time, the telescopic rod of the servo electric push rod continues to move downward, so that the cylindrical pneumatic probe can continue to detect; after the detection is completed, the inner diameter size of each position in the detection process is recorded by the MCU controller, and then a curve chart of the upper and lower positions of the part and the corresponding inner diameter sizes at each upper and lower positions is formed, and the curve chart is output through a printing device to form a part inner diameter size detection report.

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