An aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring device

Abstract

The present invention relates to a press-fitting and measuring system for the gear shaft bearings of an aircraft engine accessory transmission case. The system of the present invention includes a bearing heating assembly, a press-fitting and transferring assembly, an upper and lower pressure head tooling assembly, a press-fitting bearing assembly, a three-axis manipulator assembly, a gear shaft feeding assembly, a product flipping assembly, a gear shaft bearing span detection assembly, a quick-change product clamping assembly, and an outer frame assembly. After the product and the bearing are placed in the corresponding tooling, they are placed in a fixed position on the equipment to complete all subsequent automated press-fitting and detection processes, realizing press-fitting and pressure monitoring in one, monitoring the detection data in real time, simple operation, and ensuring the press-fitting quality of the product. Through the automated bearing press-fitting technology, it is possible to improve the bearing assembly accuracy while effectively improving production efficiency, and to avoid damage to the bearings caused by knocking. It is safe, reliable, and highly practical.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology, and in particular relates to a press-fitting and measuring device for a gear shaft bearing of a transmission case of an aero-engine accessory. Background Art

[0002] A bearing is a mechanical element that limits relative motion to the required range of motion and reduces friction between moving parts. Its accuracy, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of the host machine.

[0003] In the existing technology, the assembly of aviation product bearings is mainly done manually and with simple tools. The bearing is installed on the mating workpiece by tapping it lightly, and then pressed in manually or with other equipment. The pressing process is complicated and poses a certain threat to the personal safety of the workers.

[0004] Bearings are generally inspected manually after press-fitting. However, relying solely on manual inspection is inefficient and inaccurate, seriously affecting the safety of aviation products. In addition, the manual measurement process cannot fully achieve information data collection and docking with automated equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a gear shaft bearing press-fitting and measuring device for an aircraft engine accessory transmission casing. This device can realize the automated press-fitting of the gear shaft bearing, improve the bearing assembly accuracy and production efficiency, avoid the damage caused by knocking in traditional manual assembly of bearings, and is safe, reliable and practical. In addition, its automatic detection component can be changed according to the span of the product to be detected, thereby realizing automated detection.

[0006] The technical solutions of the present invention are as follows:

[0007] The present invention first provides an aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring device, comprising:

[0008] an outer frame assembly, used as a carrier for the gear shaft bearing press-fitting and measuring equipment;

[0009] A bearing heating assembly is provided in the outer frame assembly and is used to hold and heat the bearing;

[0010] Press-fit bearing assembly, used to press-fit the bearing onto the gear shaft;

[0011] The upper and lower press head tooling assemblies are arranged on the outer frame assembly, including an upper press head tooling tray, a lower press head tooling tray, an upper press head tooling, and a lower press head tooling; the upper press head tooling is placed on the upper press head tooling tray, and the lower press head tooling is placed on the lower press head tooling tray; the upper press head tooling and the lower press head tooling are used to fasten the bearing;

[0012] A press-fitting transfer assembly is used to clamp the gear shaft and move the gear shaft to the bottom of the press-fitting bearing assembly for press-fitting;

[0013] A three-axis manipulator assembly is provided on the upper surface of the outer frame assembly and is used to grab the bearing, gear shaft, upper pressure head tooling or lower pressure head tooling and move it;

[0014] The gear shaft bearing span detection assembly is arranged on the outer frame assembly and is used to measure the span between the two bearings on the gear shaft; it includes a precision contact displacement sensor, a tooling lifting module, a sensor lifting platform and a precision moving module; the tooling lifting module has two groups, one group of tooling lifting modules is used to adjust according to the changes in the outer diameter of the gear shaft; the other group of tooling lifting modules and the sensor lifting platform are both equipped with precision contact displacement sensors, and the other group of tooling lifting modules and the sensor lifting platform are lifted and lowered in coordination, so that the precision contact displacement sensor can simultaneously contact the inner ring position of the bearing during the detection process.

[0015] As a preferred embodiment of the present invention, the bearing heating assembly includes an automatic door opening and closing heating box and a bearing quick-change tooling tray. The bearing quick-change tooling tray is arranged inside the automatic door opening and closing heating box, and the bearing quick-change tooling tray is used to place bearings; the automatic door opening and closing heating box is used to heat the bearings.

[0016] As a preferred embodiment of the present invention, the press-fitted bearing assembly includes a servo press, a center correction module and a quick-change module robot end; the servo press has a built-in displacement pressure sensor, which provides real-time feedback of press-fitting data during the press-fitting process; the center correction module is used to guide the press-fitting tooling and the bearing to be press-fitted; the quick-change module robot end is used to cooperate with the upper press head tooling for press-fitting.

[0017] As a preferred solution of the present invention, the outer frame assembly is further provided with a loading assembly for placing the gear shaft to be pressed and a product turning assembly for turning the gear shaft at multiple angles.

[0018] As a preferred solution of the present invention, the device includes a gear shaft loading assembly, which includes a gear shaft loading tray and a manual movable platform; the manual movable platform is slidably arranged on the outer frame assembly; the gear shaft loading tray is arranged on the manual movable platform and can be replaced according to the actual needs of the gear shaft type to be pressed.

[0019] As a preferred solution of the present invention, the three-axis manipulator assembly includes a three-axis module and a quick-change module clamping end. The three-axis module can provide the quick-change module clamping end with movement in three directions of X\Y\Z. The quick-change module clamping end is used to clamp bearings and pressure head tooling and carry them.

[0020] As a preferred solution of the present invention, the precision contact displacement sensor uses a pneumatic sensor, which realizes automatic contact through ventilation during use and feeds back the span value between the two bearings.

[0021] As a preferred embodiment of the present invention, the gear shaft bearing pressing and measuring equipment further includes a product clamping assembly, which includes a plurality of clamping jaws of different specifications, and the clamping jaws are used to be installed on a three-axis manipulator assembly for clamping bearings or gear shafts.

[0022] The present invention also provides a press-fitting and measuring method for the gear shaft bearing press-fitting and measuring device, comprising the following steps:

[0023] 1) Place the bearing to be installed in the bearing heating assembly according to the bearing type and heat the bearing through the bearing heating assembly;

[0024] 2) While the bearing is being heated, the three-axis manipulator assembly grabs an upper press head fixture that matches the bearing from the upper press head fixture tray and grabs a lower press head fixture that matches the gear shaft to be installed from the lower press head fixture tray; and places the upper and lower press head fixtures on the press-fitting transfer assembly;

[0025] 3) The three-axis manipulator assembly grabs the gear shaft that needs to be pressed, transfers the gear shaft to the lower pressure head tooling set in the press-fitting transfer assembly, and clamps the gear shaft through the lower pressure head tooling;

[0026] 4) After the bearing is heated to the temperature required for press-fitting, the three-axis manipulator assembly grabs a bearing and transfers it to the upper press head tooling set in the press-fitting transfer assembly, and the bearing is clamped by the upper press head tooling;

[0027] 5) Move the press-fit transplant assembly holding the gear shaft and the bearing to the bottom of the press-fit bearing assembly, and press-fit the bearing onto one end of the gear shaft;

[0028] 6) After the bearing is installed on one end of the gear shaft, the press-fit transfer assembly is removed from under the press-fit bearing assembly, and the gear shaft is flipped 180 degrees. The three-axis manipulator assembly then grabs a bearing and transfers it to the upper press head tooling of the press-fit transfer assembly. The press-fit transfer assembly then moves under the press-fit bearing assembly, and the press-fit bearing assembly press-fits the bearing onto the other end of the gear shaft.

[0029] 7) The press-fit transplanting assembly moves the gear shaft with bearings pressed on both ends out from under the press-fit bearing assembly, and the robot grabs the press-fitted gear shaft and places it on the tooling lifting module of the gear shaft bearing span detection assembly.

[0030] 8) The precision moving module moves forward and backward according to the span of the gear shaft bearing; one set of tooling lifting modules adjusts the position according to the outer diameter of the gear shaft, and another set of tooling lifting modules and the sensor lifting platform cooperate to lift and lower so that their respective precision contact displacement sensors contact the inner rings of the bearings at both ends simultaneously;

[0031] 9) The precision contact displacement sensor contacts the inner rings of the bearings at both ends to obtain the sensor measurement value, and compares the sensor measurement value and the movement of the precision moving module with the theoretical value to calculate the actual span between the two bearings of the currently measured gear shaft.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] 1. In the present invention, the product clamping jaws are automatically replaced by the quick-change module, and the gear shaft and bearing are transported by the robot. The upper and lower pressure head tooling are automatically replaced by the quick-change module to realize the automatic pressing of the gear shaft bearing, thereby improving the bearing assembly accuracy and production efficiency, avoiding the damage caused by knocking in traditional manual assembly of bearings, being safe, reliable and practical. During the feeding and pressing process, the bearings are positioned and guided throughout the whole process, with high precision and firm fit, realizing data tracking and real-time feedback.

[0034] 2. In the present invention, through the designed automatic detection component, under the control of the working controller PLC, the span of the product can be changed as needed to realize automatic detection and product unloading. Real-time data collection and data traceability can be carried out throughout the process to eliminate defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring equipment according to an embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the structure of a bearing heating assembly for a gear shaft bearing press-fitting and measuring equipment for an aircraft engine accessory transmission case according to an embodiment of the present invention;

[0037] Figure 3 Schematic diagram of the structure of the press-fitting and measuring equipment assembly for the transmission case gear shaft bearing of an aircraft engine accessory according to an embodiment of the present invention;

[0038] Figure 4 Schematic diagram of the structure of the upper and lower press head tooling components of the aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring equipment in an embodiment of the present invention;

[0039] Figure 5 Schematic diagram of the structure of the press-fit bearing assembly of the gear shaft bearing of the transmission case of an aircraft engine accessory and the measuring equipment in accordance with the embodiment of the present invention;

[0040] Figure 6 Schematic diagram of the structure of a three-axis manipulator assembly of an aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring device according to an embodiment of the present invention;

[0041] Figure 7 Schematic diagram of the structure of the gear shaft bearing press-fitting and measuring equipment feeding assembly for the transmission case of an aircraft engine accessory according to an embodiment of the present invention;

[0042] Figure 8 This is a structural schematic diagram of a product flip assembly of an aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring equipment in an embodiment of the present invention.

[0043] Figure 9 It is a structural schematic diagram of a gear shaft bearing span detection assembly of an aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring equipment in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described and illustrated below in conjunction with specific embodiments. The embodiments are merely illustrative of the present disclosure and do not limit its scope. The technical features of the various embodiments of the present invention may be combined accordingly, provided that there is no conflict between them.

[0045] like Figure 1 The figure shows a gear shaft bearing press-fitting and measuring device for an aircraft engine accessory transmission case according to the present invention. It includes an outer frame assembly 10, which serves as the carrier for the gear shaft bearing press-fitting and measuring device; a bearing heating assembly 1, which is mounted within the outer frame assembly 10 to hold and heat the bearing; a press-fit bearing assembly 4, which is used to press-fit the bearing onto the gear shaft; upper and lower press head tooling assemblies 3, which are mounted on the outer frame assembly 10; a press-fit transfer assembly 2, which is used to clamp the gear shaft and move it below the press-fit bearing assembly 4 for press-fitting; a three-axis manipulator assembly 5, which is used to grasp and move the workpiece; and a gear shaft bearing span detection assembly 8, which is used to inspect the press-fitted gear shaft.

[0046] like Figure 4 As shown, the upper and lower press head tooling assembly 3 includes an upper press head tooling tray 23, a lower press head tooling tray 24, an upper press head tooling 25, and a lower press head tooling 26; the upper press head tooling 25 is placed on the upper press head tooling tray 23, and the lower press head tooling 26 is placed on the lower press head tooling tray 24; the upper press head tooling 25 and the lower press head tooling 26 are used to tighten the bearing; as shown Figure 9As shown, the gear shaft bearing span detection component 8 is arranged on the outer frame component 10, and is used to measure the span between the two bearings on the gear shaft; it includes a precision contact displacement sensor 11, a tooling lifting module 12, a sensor lifting platform 13 and a precision moving module 14; the tooling lifting module 12 has two groups, one group of tooling lifting modules 12 is used to adjust according to the change of the outer diameter size of the gear shaft; the other group of tooling lifting modules 12 and the sensor lifting platform 13 are both provided with a precision contact displacement sensor 11, and the other group of tooling lifting modules 12 and the sensor lifting platform 13 are lifted and lowered in coordination, so that the precision contact displacement sensor 11 can simultaneously contact the bearing inner ring position during the detection process.

[0047] like Figure 2 As shown in the figure, a bearing heating assembly 1 in one embodiment of the present invention includes an automatic door heating box 18 and a bearing quick-change tooling tray 19. The bearing quick-change tooling tray 19 is set in the automatic door heating box 18 and is used to place bearings; the automatic door heating box 18 is used to heat the bearings. Manual loading is to place the bearings on the bearing quick-change tooling tray 19 according to the product type, and then place the entire bearing in the automatic door heating box 18 for bearing heating. Figure 7 The figure shows a schematic structural diagram of a gear shaft loading assembly for pressing and measuring equipment for a transmission case of an aircraft engine accessory according to the present invention. The manual movable platform 35 is manually pulled out, and then the gear shafts to be pressed as needed are placed on the corresponding gear shaft loading trays 34 in sequence. After placement is completed, the manual movable platform 35 is returned to its initial state, and the position of the current movable platform is fixed by the plunger in the structure. After the bearing is heated to the temperature required for pressing, the subsequent product pressing begins.

[0048] like Figure 6 This is a schematic diagram of the structure of the three-axis manipulator assembly of the present invention. According to the bearing model to be pressed, two three-axis manipulators are provided in this embodiment; the three-axis manipulator on one side grabs the clamping claw of the quick-change product clamping assembly 9, takes the corresponding lower pressure head tooling and places it on the Figure 3 The product of the press-fit transplanting assembly 2 is placed on the upper and lower press head tooling 21, and then the three-axis manipulator places the lower press head and the clamping jaws are in the initial state. The three-axis manipulator moves to the upper press head tooling tray 23 to take the upper press head tooling corresponding to the bearing model to be press-fitted, and puts the upper press head tooling 25 Place Figure 3 The product of the press-fit transplanting assembly 2 shown in the figure is placed on the upper pressure head tooling of the upper and lower pressure head tooling 21, and then moved to the position shown in the figure. Figure 5Below the press-fit bearing assembly 4 shown, the press-fit bearing assembly 4 includes a servo press 27, a center correction module 28, and a quick-change module robot end 29. The press-fit bearing assembly 4 is powered by a servo motor and has a built-in displacement pressure sensor. During the press-fit process, the press-fit data can be fed back to the press display in real time. The center correction module 28 can quickly guide the press-fit tooling to the bearings and products to be press-fitted, compensating for the center inconsistency caused by structural cumulative errors and product errors. The quick-change module robot end 29 can cooperate with the upper press tooling 25 to replace the tooling in a timely manner according to the size and specifications of the bearings to be press-fitted. The servo press moves downward through the quick-change module of the upper press tooling and connects with the quick-change module below the press to grab the upper press tooling to the top position to be press-fitted, and then moves the displacement platform 20 to the position to remove the bearings and gear shafts. At this time, the three-axis robot on the other side grabs the claws of the quick-change product clamping assembly 9, moves to the gear shaft loading assembly 6 to take the corresponding gear shaft product that needs to be pressed, places the gear shaft in the lower pressure head fixture 26 position, takes the quick-change product clamping assembly 9 to replace the bearing claws, and then goes to the bearing heating assembly 1 to take the bearing that needs to be pressed and places the bearing in the bearing fixture 22 position. The bearing is moved to the press-fit bearing assembly 4 through the mobile displacement platform 20. The servo press grabs the bearing to the working position through the upper pressure head fixture, and then moves the displacement platform 20 to move the gear shaft that needs to be pressed to the press-fit bearing assembly 4. The servo press starts to press the bearing. After the bearing at one end is completed, the mobile displacement platform 20 moves the pressed gear shaft to the loading station, and the robot grabs the gear shaft that has been pressed at one end to the position such as Figure 8 The product flip assembly 7 shown includes a flip servo assembly 36 and a flip pneumatic gripper 37, which are used to clamp the gear shaft and flip it at multiple angles. At this time, the product flips 180 degrees. At the same time, the corresponding upper and lower press head tooling needs to be replaced based on the bearing that needs to be pressed on the other end. If necessary, the corresponding upper and lower press head tooling can be replaced according to the steps described above. If not, the gear shaft that has been flipped 180 degrees is grasped by a robot and placed on the lower press head tooling of the product upper and lower press head tooling 21. Considering that the gear shaft needs to press-fit bearings at both ends, after completing the press-fitting of the bearing at one end, it is necessary to remove the corresponding bearing from the bearing heating assembly 1 according to the bearing model of the other end to be pressed and place it on the bearing tooling 22. The bearing is moved to the press-fit bearing assembly 4 via the movable displacement platform 20. The servo press grabs the bearing to the working position via the upper press head tooling. Then the movable displacement platform 20 moves the gear shaft to be pressed under the press-fit bearing assembly 4, and the servo press begins to press-fit the bearing.

[0049] like Figure 9This is a structural schematic diagram of the gear shaft bearing span detection component of the present invention. The spans of all gear shaft bearings that need to be detected and the inner and outer diameters of the corresponding bearings at both ends are statistically analyzed in advance. According to the spans of all gear shaft bearings, the corresponding movement data can be input into the precision moving module 14 through the PLC to move in the forward and backward directions. To ensure that the product is in a horizontal state when placed on the tooling, the height difference between the outer diameter center dimensions of the two bearings placed on the corresponding product tooling is calculated based on the outer diameter values of the bearings at both ends of the current gear shaft bearing product. The height difference is input through the PLC to realize the up and down movement of the tooling lifting module 12. Finally, according to the inner diameter values of the bearings at both ends of the current gear shaft bearing product, the height difference between the inner diameter center dimensions of the two bearings placed on the corresponding product tooling is calculated. The height difference is input through the PLC to realize the lifting and lowering of the lifting module 12 and the sensor lifting platform 13. Then the current specification gear shaft model and all corresponding module data are recorded and numbered, and the same applies to gear shaft products of different specifications. After the bearings at both ends are press-fitted, the mobile displacement platform 20 moves the product to the loading position, and then the robot grabs the gear shafts that have been press-fitted at both ends to the product flipping assembly 7. At this time, the product flips 90 degrees. After the flip is completed, the robot grabs the product that has been flipped 90 degrees to the gear shaft bearing span detection assembly 8. Before the test, after the corresponding number of the gear shaft to be tested is input into the PLC, each module runs to the position to be moved, and then the tested product is placed on the detection device. Then, the probes of the precision contact displacement sensor 11 are extended, and the two probes are respectively in contact with the inner rings of the bearings at both ends to obtain the sensor measurement value. By comparing the value of the extended sensor and the movement amount of the precision moving module 14 with the theoretical value, the actual span between the two bearings of the currently measured gear shaft product is calculated to complete the detection process.

[0050] After the span test is complete, the robot grabs the completed gear shaft and places it in the product flip assembly 7. At this point, the product is flipped to the 0-degree position. The robot then grabs the flipped gear shaft and places it in the gear shaft loading assembly 6, completing the press-fitting of the bearings at both ends of the gear shaft and span test. Subsequent press-fitting is performed according to the previous steps. Once all placed gear shafts are press-fitted, a manual operation is performed at the gear shaft loading assembly 6 to remove the gear shaft.

[0051] The invention provides a set of aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring equipment, which has the advantages of compact structure, strong stability, etc. and can implement data monitoring and status display.

[0052] The above-described embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. Persons skilled in the art will readily appreciate that variations and modifications may be made without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. An aircraft engine accessory transmission case gear shaft bearing press-fitting and measuring device, characterized in that: include An outer frame assembly (10) is used as a carrier for the gear shaft bearing press-fitting and measuring equipment; A bearing heating assembly (1) is arranged in the outer frame assembly (10) and is used to hold the bearing and heat the bearing; A press-fit bearing assembly (4) for press-fitting the bearing onto the gear shaft; The upper and lower pressing head tooling components (3) are arranged on the outer frame component (10), and include an upper pressing head tooling tray (23), a lower pressing head tooling tray (24), an upper pressing head tooling (25), and a lower pressing head tooling (26); the upper pressing head tooling (25) is placed on the upper pressing head tooling tray (23), and the lower pressing head tooling (26) is placed on the lower pressing head tooling tray (24); the upper pressing head tooling (25) and the lower pressing head tooling (26) are used to fasten the bearing; A press-fitting transfer assembly (2) is used to clamp the gear shaft and move the gear shaft to the bottom of the press-fitting bearing assembly (4) for press-fitting; A three-axis manipulator assembly (5) is provided on the upper surface of the outer frame assembly (10) and is used to grab the bearing, the gear shaft, the upper pressure head fixture (25) or the lower pressure head fixture (26) and move them; A gear shaft bearing span detection assembly (8) is arranged on an outer frame assembly (10) and is used to measure the span between two bearings on the gear shaft; it comprises a precision contact displacement sensor (11), a tooling lifting module (12), a sensor lifting platform (13) and a precision moving module (14); the tooling lifting module (12) has two groups, one group of tooling lifting modules (12) is used to adjust according to changes in the outer diameter of the gear shaft; the other group of tooling lifting modules (12) and the sensor lifting platform (13) are both provided with a precision contact displacement sensor (11), and the other group of tooling lifting modules (12) and the sensor lifting platform (13) are lifted and lowered in coordination, so that the precision contact displacement sensor (11) can simultaneously contact the position of the bearing inner ring during the detection process.

2. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The bearing heating assembly (1) comprises an automatic door opening and closing heating box (18) and a bearing quick-change tooling tray (19); the bearing quick-change tooling tray (19) is arranged in the automatic door opening and closing heating box (18); the bearing quick-change tooling tray (19) is used to place bearings; and the automatic door opening and closing heating box (18) is used to heat the bearings.

3. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The press-fit bearing assembly (4) comprises a servo press (27), a center correction module (28) and a quick-change module robot end (29); the servo press (27) has a built-in displacement pressure sensor, which provides real-time feedback of press-fit data during the press-fitting process; the center correction module (28) is used to guide the press-fitting tooling and the bearing to be press-fitted; the quick-change module robot end (29) is used to cooperate with the upper press head tooling (25) to perform press-fitting.

4. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The invention also includes a gear shaft loading assembly (6), wherein the gear shaft loading assembly (6) includes a gear shaft loading tray (34) and a manual movable platform (35); the manual movable platform (35) is slidably arranged on the outer frame assembly (10); the gear shaft loading tray (34) is arranged on the manual movable platform (35) and can be replaced according to the type of gear shaft to be pressed in accordance with actual needs.

5. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The outer frame assembly (10) is also provided with a product turning assembly (7) for turning the gear shaft at multiple angles and a loading assembly (6) for placing the gear shaft to be pressed.

6. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The three-axis manipulator assembly (5) comprises a three-axis module and a quick-change module clamping end (33). The three-axis module can provide the quick-change module clamping end (33) with movement in three directions of X, Y, and Z. The quick-change module clamping end (33) is used to clamp and carry bearings and pressure head tooling.

7. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The precision contact displacement sensor (11) uses a pneumatic sensor, which realizes automatic contact through ventilation during use and feeds back the span value between the two bearings.

8. The gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: It also includes a product clamping assembly (9), which includes a plurality of clamping claws of different specifications. The clamping claws are used to be installed on the three-axis manipulator assembly (5) for clamping bearings or gear shafts.

9. A press-fitting and measuring method for the gear shaft bearing press-fitting and measuring device according to claim 1, characterized in that: The following steps are involved: 1) placing the bearing to be installed on the bearing heating assembly (1) according to the type of the bearing, and heating the bearing through the bearing heating assembly (1); 2) During the heating process of the bearing, the three-axis manipulator assembly (5) grabs an upper pressing head fixture (25) matching the bearing from the upper pressing head fixture tray (23) and grabs a lower pressing head fixture (26) matching the gear shaft to be installed from the lower pressing head fixture tray (24); and sets the upper pressing head fixture (25) and the lower pressing head fixture (26) on the press-fitting and transplanting assembly (2); 3) The three-axis manipulator assembly (5) grabs the gear shaft to be pressed, transfers the gear shaft to the lower pressing head fixture (26) provided on the press-fitting transfer assembly (2), and clamps the gear shaft through the lower pressing head fixture (26); 4) After the bearing is heated to the temperature required for press-fitting, the three-axis manipulator assembly (5) grabs a bearing and transfers the bearing to the upper pressing head fixture (25) provided on the press-fitting transfer assembly (2), and the bearing is clamped by the upper pressing head fixture (25); 5) moving the press-fitting transplanting assembly (2) holding the gear shaft and the bearing to the bottom of the press-fitting bearing assembly (4), and press-fitting the bearing onto one end of the gear shaft by the press-fitting bearing assembly (4); 6) After the bearing at one end of the gear shaft is installed, the press-fitting transfer assembly (2) is moved out from under the press-fitting bearing assembly (4), and the gear shaft is turned 180 degrees; the three-axis manipulator assembly (5) grabs a bearing again and transfers the bearing to the upper pressing head tooling (25) set on the press-fitting transfer assembly (2); the press-fitting transfer assembly (2) is moved to under the press-fitting bearing assembly (4), and the press-fitting bearing assembly (4) press-fits the bearing to the other end of the gear shaft; 7) The press-fitting and transplanting assembly (2) moves the gear shaft with bearings pressed on both ends out from under the press-fitting bearing assembly (4), and the manipulator grabs the press-fitted gear shaft and places it on the tooling lifting module (12) of the gear shaft bearing span detection assembly (8); 8) The precision moving module moves in the front-back direction according to the span of the gear shaft bearing; one set of tooling lifting modules (12) adjusts the position according to the outer diameter of the gear shaft, and another set of tooling lifting modules (12) and the sensor lifting platform (13) cooperate to lift and lower so that the respective precision contact displacement sensors (11) contact the inner rings of the bearings at both ends at the same time; 9) The precision contact displacement sensor (11) contacts the inner rings of the bearings at both ends to obtain the sensor measurement value, and compares the sensor measurement value and the movement amount of the precision moving module with the theoretical value to calculate the actual span between the two bearings of the gear shaft currently being measured.

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