Full-automatic self-adaptive measuring device for differential left and right housings and measuring method thereof

Abstract

The present application relates to a full-automatic self-adaptive measuring device for differential left and right housings and a measuring method thereof, which comprises a centering support column for centering one of the housing one or the housing two, a vertical column for supporting the housing from top to bottom through a reference surface, and a static measuring assembly, a movable measuring assembly and a lifting measuring assembly, which not only realize the measurement of consistent parameters of the housing one and the housing two, such as the inner spherical surface diameter, but also realize the measurement of inconsistent parameters of the housing one and the housing two, such as the flange size, thereby being compatible with the differential left and right housings, realizing the size detection of the differential based on the same measuring reference, greatly ensuring the differential assembly precision and reliability, and effectively ensuring the measuring efficiency and effect.

Description

Technical Field

[0001] This invention relates to the field of differential measuring equipment technology, and in particular to a fully automatic adaptive measuring device and method for the left and right housings of a differential. Background Technology

[0002] The left and right housings of a truck differential are assembly pairs, with many dimensions being the same, especially the size of the balls inside the housings; however, there are also dimensions that are not completely consistent, such as the flange parameters unique to one of the housings.

[0003] Existing measurement methods mostly rely on simple manual measuring fixtures, which have significant measurement errors, especially for the dimensions of the balls inside the housing. These simple fixtures exhibit large measurement errors and, because the left and right housings are measured separately, the positional accuracy of the ball's center cannot be effectively measured. Positional accuracy is a crucial parameter for differentials, directly affecting their assembly precision.

[0004] In existing technologies, reducing measurement errors, improving measurement accuracy, and measuring the position of the center of a sphere inside a shell can only be achieved using high-value-added equipment such as a coordinate measuring machine (CMM). However, CMMs are highly dependent on human intervention and are very inefficient. Summary of the Invention

[0005] To address the shortcomings of existing production technologies, the applicant provides a reasonably structured fully automatic adaptive measuring device and method for the left and right differential housings. This device is compatible with both left and right differential housings and, based on the same measurement benchmark, enables the dimensional inspection of the differential. This not only greatly ensures the assembly accuracy and reliability of the differential but also effectively guarantees measurement efficiency and results.

[0006] The technical solution adopted in this invention is as follows:

[0007] An automatic adaptive measuring device for left and right differential housings includes a working platform with a centering support column mounted on it. Multiple columns are spaced apart on the working platform circumferentially outside the centering support column. The differential housing is composed of two hemispherical housings, housing one and housing two, assembled facing each other. Housing one or housing two is fitted onto the centering support column via a main bearing hole. The bottom surface of housing one or housing two is supported on the columns to form a reference surface. A static measuring component, a moving measuring component, and a lifting measuring component are also arranged on the working platform circumferentially outside the centering support column. These components are arranged in even numbers symmetrically relative to the centering support column. The outer diameter of the structure embedded between housing one and housing two, and the inner spherical diameter of the differential housing, are measured by the static measuring component. The inner diameter of the structure embedded between housing one and housing two is measured by the lifting measuring component. The moving measuring component measures the diameter of the flange at the center of the differential housing and the distance from the flange to the reference surface.

[0008] As a further improvement to the above technical solution:

[0009] Sensors facing the differential housing are installed on the top surface of the column and the support surface of the centering support column. After the movable measuring component is moved horizontally into position towards the differential housing, the values ​​are taken by a pair of flange outer circumferential surfaces by a pair of horizontally oriented detection sensors and by a pair of flange top surfaces by another vertically downward oriented detection sensor.

[0010] The structure of the mobile measuring component is as follows: it includes a support mounted on a working platform, a horizontal plate welded to the top of the support to form a whole, a vertical plate and a moving cylinder installed at intervals on the front and back of the top of the horizontal plate, a moving plate installed at the moving end of the moving cylinder, the moving plate moving toward the vertical plate, and matching guide pins and pin seats installed on the sides of the moving plate and the vertical plate facing each other, with transverse grooves for the guide pins to fit on the pin seats; two sets of detection sensors, one horizontal and one vertical, facing the flange respectively, are installed on the moving plate.

[0011] Both the lifting measurement component and the static measurement component include a measurement power mechanism;

[0012] The structure of the measuring power mechanism is as follows: it includes a floating plate and a fixed plate arranged parallel to each other at intervals, and springs are installed at both ends of the floating plate and the fixed plate respectively; a connecting block is installed on the top surface of the fixed plate, and a vertical block is installed on the bottom surface of the floating plate; a needle cylinder is installed in the horizontally penetrating connecting block, and the output end of the needle cylinder is fixed to the vertical block; a second detection sensor is also installed in the horizontally penetrating connecting block, and the output end of the second detection sensor faces the vertical block; a measuring hard point is installed on the vertical block that is directly opposite the output end of the second detection sensor.

[0013] The measuring power mechanism drives the measuring points in the lifting measuring component and the static measuring component to reset via the floating plate. The measuring points contact one or two walls of the housing, and the measuring value is obtained by the second detection sensor based on the change in the position of the measuring points.

[0014] The structure of the lifting measuring component is as follows: it includes a base plate installed on a working platform, a lifting cylinder installed on the top surface of the base plate, a lifting plate installed with the output end of the lifting cylinder facing upwards, a measuring power mechanism installed on the top surface of the lifting plate, a connecting rod installed on the floating plate at the top of the measuring power mechanism, the end of the connecting rod extending towards the differential housing and installing a measuring rod, the measuring rod extending to the inner side of the differential housing, and a measuring point installed on the outer side of the measuring rod; a stand is installed on the base plate on both sides of the lifting cylinder, and a pin group is installed on the top surface of the lifting plate on both sides of the measuring power mechanism, the pin group including three pins arranged in a triangular structure, and a limiting member corresponding to each of the three pins is installed on the side of the stand facing the pin group; two of the limiting members have long grooves in the same direction at their ends, and the other limiting member has a concave circular hole for the pin fitting at its end.

[0015] The static measurement component has the following structure: it includes a bracket installed on a working platform, a measuring power mechanism installed on the top surface of the bracket, a connecting seat installed on the floating plate on the top of the measuring power mechanism, the connecting seat extending toward the differential housing and installing a support arm, and a measuring point installed at the end of the support arm.

[0016] In the static measurement assembly for measuring the outer diameter, the control arm is located outside the differential housing, and the measuring point at the end of the control arm is in line contact with the differential housing; in the static measurement assembly for measuring the inner spherical diameter, the control arm extends into the differential housing, and the measuring point at the end of the control arm is in point contact with the differential housing.

[0017] It also includes a receiving mechanism, which moves the upper housing one or housing two downwards and supports them on the column and the centering support column.

[0018] The specific structure of the receiving mechanism is as follows: it includes a working platform that runs vertically through the platform, multiple guide columns fitted with guide sleeves, a lifting frame installed at the bottom of the guide columns, and the lifting frame being driven by the lifting power below to move up and down relative to the working platform; a support ring is installed at the top of the multiple guide columns, the support ring is concentrically arranged on the outer circumference of the centering support column, and multiple protruding pins are spaced apart on the top surface of the support ring.

[0019] A measurement method for the fully automatic adaptive measuring device for the left and right differential housings, wherein the differential housing is composed of a housing 1 and a housing 2, both hemispherical in shape, assembled facing each other. The inner wall edge of housing 1 extends outward with a flange, and the inner wall edge of housing 2 is concave to form a notch that matches the flange. A central hole is provided perpendicular to the mating surface of housing 1 and housing 2 and along the diametrical direction. The outer openings of the central holes on housing 1 and housing 2 both extend outward to form main bearing holes. The open end of housing 2 extends outward to form a flange.

[0020] The measurement method for the left and right housings of the differential includes separate measurements of housing one and housing two;

[0021] When measuring housing one, housing one is fitted onto the centering support column through the center hole, with the main bearing hole facing upwards, and the bottom surface of housing one is supported on the column to form a reference surface; the inner spherical surface dimension and the outer diameter dimension of the flange at multiple positions on housing one are obtained by static measurement components;

[0022] When measuring housing two, housing two is centered and fitted onto the centering support column through the center hole, with the main bearing hole facing upwards. The bottom surface of housing two is supported on the column to form a reference surface. The inner spherical dimensions at multiple locations on housing two are measured by the static measuring component. The lifting measuring component moves upwards to measure the diameter at the notch of housing two. The moving measuring component moves toward housing two to obtain the diameter of the flange and the distance from the top surface of the flange to the reference surface.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention features a compact and rational structure, and is easy to operate. A centering support column centers either housing one or housing two, and a column, via a reference surface, forms support from top to bottom. Combined with static, mobile, and lifting measurement components, it not only achieves measurements of consistent parameters between housing one and housing two, such as the inner spherical diameter, but also of inconsistent parameters, such as flange dimensions. This makes it compatible with both left and right differential housings and enables differential dimensional inspection based on the same measurement reference. This significantly improves differential assembly accuracy and reliability, while also effectively ensuring measurement efficiency and results.

[0025] The present invention also includes the following advantages:

[0026] Based on the same measurement benchmark and static measurement components, the inner spherical diameters of housing one and housing two are measured at multiple points, thereby obtaining the position parameters of the inner sphere center and effectively ensuring the assembly accuracy of the differential.

[0027] The movable measuring component and the lifting measuring component are respectively moved and lifted. When not needed, they are in a retracted and do not affect the loading and unloading of the housing or the use of the static measuring component. When needed, they are extended to perform measurement. In the moving or lifting action, the cooperation of guide pin-pin seat and pin group-limiting component are used to effectively ensure the accuracy of the action and the measurement. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention.

[0029] Figure 2 This is a schematic diagram showing the layout of each group of measurement components on the working platform of this invention.

[0030] Figure 3 This is a schematic diagram of the structure of the mobile measuring component of the present invention.

[0031] Figure 4 This is a schematic diagram of the lifting measuring component of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the limiting component of the present invention.

[0033] Figure 6 This is a schematic diagram of the static measurement component of the present invention.

[0034] Figure 7 This is a schematic diagram of the measuring power mechanism of the present invention.

[0035] Figure 8 This is a schematic diagram of the material receiving mechanism of the present invention.

[0036] Figure 9 This is a schematic diagram of the differential of the present invention.

[0037] The components include: 1. Working platform; 2. Lifting measuring component; 3. Column; 4. Sensor group; 5. Material receiving mechanism; 6. Centering support column; 7. Static measuring component; 8. Moving measuring component; 9. Differential housing; 10. Measuring power mechanism.

[0038] 21. Base plate; 22. Stand; 23. Lifting cylinder; 24. Lifting plate; 25. Pin assembly; 27. Limiting component; 28. Connecting rod; 29. ​​Measuring rod;

[0039] 51. Lifting power drive; 52. Lifting frame; 53. Guide column; 54. Support ring; 55. Protruding pin;

[0040] 61. Vertical groove; 62. Through hole;

[0041] 71. Bracket; 73. Connector; 74. Support arm;

[0042] 81. Support; 82. Horizontal plate; 83. Moving cylinder; 84. Moving plate; 85. Vertical plate; 86. Guide pin; 87. Pin seat; 88. Detection sensor one;

[0043] 90. Main bearing bore; 91. Housing 1; 92. Housing 2; 911. Flange; 921. Notch;

[0044] 101. Sensor 2; 102. Floating plate; 103. Connecting block; 104. Vertical block; 105. Spring; 106. Fixing plate; 107. Needle cylinder; 108. Measuring hard point. Detailed Implementation

[0045] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0046] like Figure 1 and Figure 2 As shown, the fully automatic adaptive measuring device for the left and right differential housings in this embodiment includes a working platform 1. A centering support column 6 is mounted on the working platform 1. Multiple columns 3 are spaced apart on the working platform 1, located circumferentially outside the centering support column 6. The differential housing 9 is constructed by assembling two hemispherical housings, 91 and 92, facing each other. Housing 91 or 92 is fitted onto the centering support column 6 via a main bearing hole 90. The bottom surface of housing 91 or 92 is supported on the columns 3 to form a reference surface. Further components are arranged on the working platform 1, circumferentially outside the centering support column 6. There are static measuring components 7, mobile measuring components 8, and lifting measuring components 2. All three components are evenly arranged symmetrically with respect to the centering support column 6. The outer diameter of the structure embedded between housing 1 91 and housing 2 92, and the inner spherical diameter of the differential housing 9 are measured by the static measuring component 7. The inner diameter of the structure embedded between housing 1 91 and housing 2 92 is measured by the lifting measuring component 2. The mobile measuring component 8 measures the diameter of the flange in the middle of the differential housing 9 and the distance from the flange to the reference surface.

[0047] In this embodiment, the centering support column 6 centers either housing 91 or housing 92, and the column 3 forms a support from top to bottom on the reference surface. Combined with the static measurement component 7, the mobile measurement component 8, and the lifting measurement component 2, it not only achieves the measurement of consistent parameters of housing 91 and housing 92, such as the inner spherical diameter, but also the measurement of inconsistent parameters of housing 91 and housing 92, such as the flange size. This makes it compatible with the left and right housings of the differential and realizes the size detection of the differential based on the same measurement reference.

[0048] In this embodiment, based on the same measurement benchmark and static measurement component 7, the inner spherical diameters of housing 1 91 and housing 2 92 are measured at multiple points, thereby obtaining the inner spherical center position parameters and effectively ensuring the assembly accuracy of the differential.

[0049] Sensors facing the differential housing 9 are installed on the top surface of column 3 and the support surface of centering support column 6. On the one hand, the housing attitude is detected during the measurement process to ensure that it is in the preset measurement attitude. On the other hand, the reference surface is also acquired and set. After the movable measuring component 8 moves horizontally to the differential housing 9, the horizontally oriented detection sensor 88 takes the value of the outer circumference of the flange to obtain the outer diameter of the flange. The vertically downward oriented detection sensor 88 takes the value of the top surface of the flange. Combined with the reference surface data, the parameter value of the flange in the thickness direction is obtained.

[0050] like Figure 3 As shown, the structure of the mobile measuring component 8 is as follows: it includes a support 81 installed on the working platform 1, a horizontal plate 82 welded to the top of the support 81 to form a whole, a vertical plate 85 and a moving cylinder 83 are installed at intervals on the front and back of the top of the horizontal plate 82, a moving plate 84 is installed on the moving end of the moving cylinder 83, the moving plate 84 moves toward the vertical plate 85, and a matching guide pin 86 and a pin seat 87 are installed on the sides of the moving plate 84 and the vertical plate 85 facing each other, and a transverse groove is opened on the pin seat 87 for the guide pin 86 to be fitted; two sets of detection sensors 88 are installed on the moving plate 84, one horizontally and one vertically facing the flange respectively.

[0051] In this embodiment, the moving cylinder 83 drives the moving plate 84 and the detection sensor 88 on it to move towards the flange. During the movement, the moving plate 84 is guided and adapted to the pin seat 87 by the guide pin 86, which effectively ensures the reliability and accuracy of the movement, thereby effectively ensuring the accuracy of the measured values.

[0052] Since the sensor 88 is used to measure flange parameters, including longitudinal and horizontal dimensions, the horizontal accuracy of the sensor 88's movement is required to be high. Deviation or deviation in its movement in the vertical direction will directly lead to inaccurate dimensional measurements in both directions. Therefore, based on the arrangement of the guide pin 86 and the pin seat 87, especially the transverse groove on the pin seat 87, the alignment of the guide pin 86 with the transverse groove effectively ensures the accuracy and reliability of the movement in the horizontal direction.

[0053] Both the lifting measurement component 2 and the static measurement component 7 include a measurement power mechanism 10.

[0054] like Figure 7As shown, the structure of the measuring power mechanism 10 is as follows: it includes a floating plate 102 and a fixed plate 106 arranged parallel to each other at intervals. Springs 105 are installed at both ends of the floating plate 102 and the fixed plate 106 respectively. A connecting block 103 is installed on the top surface of the fixed plate 106, and a vertical block 104 is installed on the bottom surface of the floating plate 102. A needle cylinder 107 is installed on the horizontally penetrating connecting block 103, and the output end of the needle cylinder 107 is fixed to the vertical block 104. A second detection sensor 101 is also installed on the horizontally penetrating connecting block 103. The output end of the second detection sensor 101 faces the vertical block 104, and a measuring hard point 108 is installed on the vertical block 104 that is directly opposite to the output end of the second detection sensor 101.

[0055] The measuring power mechanism 10 drives the measuring points in the lifting measuring component 2 and the static measuring component 7 to reset via the floating plate 102. The measuring points contact the wall surface of housing 1 91 or housing 2 92, and the measuring value is obtained by the detection sensor 2 101 through the change in the position of the measuring point.

[0056] In use, when not in measurement mode, the needle cylinder 107 actuates, overcoming the deformation elasticity of the spring 105, and pushes the block 104 to move. The floating plate 102 moves with the block 104 relative to the fixed plate 106. At this time, the measuring point is in a contracted state relative to the measured object, that is, the measuring point does not contact the measured object. When in measurement mode, the needle cylinder 107 resets. Under the action of the deformation elasticity of the spring 105, the floating plate 102 and the block 104 move and reset relative to the fixed plate 106. The measuring point moves towards the measured object until they come into contact with each other. The change in the position of the measuring hard point 108 on the block 104 is obtained by the detection sensor 101, and the measurement value is obtained.

[0057] In this embodiment, actual contact measurement is performed by the elastic reset of the measuring power mechanism 10. While obtaining the measurement value, the elastic action effectively ensures reliable, effective, and flexible contact between the measuring point and the object being measured. This ensures accurate measurement and also effectively guarantees the service life of the measuring components.

[0058] like Figure 4As shown, the structure of the lifting measuring assembly 2 is as follows: it includes a base plate 21 mounted on the working platform 1, a lifting cylinder 23 mounted on the top surface of the base plate 21, a lifting plate 24 mounted on the output end of the lifting cylinder 23 facing upwards, a measuring power mechanism 10 mounted on the top surface of the lifting plate 24, a connecting rod 28 mounted on the floating plate 102 at the top of the measuring power mechanism 10, the end of the connecting rod 28 extending towards the differential housing 9 and mounting a measuring rod 29, the measuring rod 29 extending to the inside of the differential housing 9, measuring... Measuring points are installed on the outer side of rod 29; a stand 22 is installed on the base plate 21 located on both sides of the lifting cylinder 23; a pin assembly 25 is installed on the top surface of the lifting plate 24 located on both sides of the measuring power mechanism 10. The pin assembly 25 includes three pins arranged in a triangular structure. Limiting members 27 corresponding to the three pins are installed on the side of the stand 22 facing the pin assembly 25; two of the limiting members 27 have long grooves in the same direction at their ends, and the other limiting member 27 has a concave circular hole for the pin fitting at its end. Figure 5 As shown.

[0059] In this embodiment, during the upward movement, the pin group 25 and the limiting member 27 are matched, especially by two limiting members 27 with long slots and one limiting member 27 with a concave circular hole, forming a three-ball socket positioning for the upward movement of the lifting plate 24. This effectively ensures the reliability and consistency of the upward movement of the lifting plate 24, and effectively helps to achieve stable and reliable repeated measurement and use of the lifting measuring component 2.

[0060] like Figure 6 As shown, the structure of the static measurement component 7 is as follows: it includes a bracket 71 installed on the working platform 1, a measuring power mechanism 10 installed on the top surface of the bracket 71, a connecting seat 73 installed on the top floating plate 102 of the measuring power mechanism 10, the connecting seat 73 extends toward the differential housing 9 and a support arm 74 is installed, and a measuring point is installed at the end of the support arm 74.

[0061] In the static measuring assembly 7 for measuring the outer diameter, the support arm 74 is located outside the differential housing 9, and the measuring point at the end of the support arm 74 is in line contact with the differential housing 9; in the static measuring assembly 7 for measuring the inner spherical diameter, the support arm 74 extends into the differential housing 9, and the measuring point at the end of the support arm 74 is in point contact with the differential housing 9.

[0062] Of course, in actual use, a corresponding vertical groove 61 can be opened on the centering support column 6, and a through hole 62 with internal and external communication can be opened on the centering support column 6 at the position where it is fitted with the main bearing hole 90. The corresponding support arm 74 can be extended into the centering support column 6 through the vertical groove 61, and the measuring point at the end of the support arm 74 can be exposed through the through hole 62, thereby realizing the detection of the diameter of the differential housing 9 at the main bearing hole 90 by the static measuring component 7.

[0063] It also includes a receiving mechanism 5, which moves the upper housing 1 91 or housing 2 92 downwards and supports it on the column 3 and the centering support column 6; thereby realizing the docking between the measuring device and the external transfer mechanism through the receiving mechanism 5, and realizing the fully automated use of the measuring device.

[0064] like Figure 8 As shown, the specific structure of the receiving mechanism 5 is as follows: it includes a working platform 1 running vertically through the platform, and multiple guide columns 53 fitted with guide sleeves. A lifting frame 52 is installed at the bottom of the guide columns 53. The lifting frame 52 is driven by the lifting power drive 51 below to move up and down relative to the working platform 1. A support ring 54 is installed at the top of the multiple guide columns 53. The support ring 54 is concentrically arranged around the centering support column 6. Multiple protrusions 55 are spaced apart on the top surface of the support ring 54. The protrusions 55 are used to coarsely position the differential housing 9 so that it can be accurately fitted onto the centering support column 6. The protrusions 55 are also used to prevent the differential housing 9 from accidentally detaching from the support ring 54, thus ensuring safety.

[0065] In this embodiment, a sensor group 4 can also be installed on the working platform 1 to detect the presence or absence of the differential housing 9 at the receiving mechanism 5.

[0066] In this embodiment, the movable measuring component 8 and the lifting measuring component 2, through their respective moving and lifting actions, can be in a retracted and yielding state when not needed, without affecting the loading and unloading of the housing or the use of the static measuring component 7. When needed, they can be extended to perform measurements. In the moving or lifting actions, the cooperation of guide pin 86-pin seat 87 and pin group 25-limiting member 27 are used to effectively ensure the accuracy of the action and the accuracy of the measurement.

[0067] The measurement method of the fully automatic adaptive measuring device for the left and right differential housings in this embodiment is as follows: Figure 9 As shown, the differential housing 9 is composed of a hemispherical housing 91 and a housing 92 assembled facing each other. The inner wall of housing 91 has a flange 911 extending outward from the edge, and the inner wall of housing 92 has a recess 921 that fits the flange 911. A central hole is provided perpendicular to the mating surface of housing 91 and housing 92 and along the diameter direction. The outer opening of the central hole on housing 91 and housing 92 extends outward to form a main bearing hole 90. The open end of housing 92 extends outward to form a flange.

[0068] The measurement method for the left and right differential housings includes separate measurements of housing 1 91 and housing 2 92;

[0069] When measuring housing 91, housing 91 is fitted onto centering support column 6 through the center hole, with main bearing hole 90 facing upwards, and bottom surface of housing 91 supported on column 3 to form a reference surface; the inner spherical dimensions and outer diameter dimensions of flange 911 at multiple locations on housing 91 are measured by static measuring component 7.

[0070] When measuring housing 2 92, housing 2 92 is centered and mounted on the centering support column 6 through the center hole, with the main bearing hole 90 facing upwards. The bottom surface of housing 2 92 is supported on the column 3 to form a reference surface. The inner spherical dimensions at multiple locations on housing 2 92 are measured by the static measuring component 7. The lifting measuring component 2 moves upwards to measure the diameter at the notch 921 of housing 2 92. The moving measuring component 8 moves toward housing 2 92 to obtain the diameter of the flange and the distance from the top surface of the flange to the reference surface.

[0071] This invention is compatible with both the left and right housings of a differential and, based on the same measurement benchmark, enables fully automated dimensional inspection of the differential. This not only greatly ensures the assembly accuracy and reliability of the differential but also effectively guarantees measurement efficiency and results.

[0072] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A fully automatic adaptive measuring device for the left and right housings of a differential, comprising a working platform (1), characterized in that: The working platform (1) is equipped with a centering support column (6). Multiple columns (3) are installed at intervals on the working platform (1) located circumferentially outside the centering support column (6). The differential housing (9) is composed of a housing one (91) and a housing two (92) that are both hemispherical in shape and are assembled facing each other. The housing one (91) or the housing two (92) is fitted onto the centering support column (6) through the main bearing hole (90). The bottom surface of the housing one (91) or the housing two (92) is supported on the column (3) to form a reference surface. Static measurement components (7) and displacement components are also arranged on the working platform (1) located circumferentially outside the centering support column (6). The moving measuring component (8) and the lifting measuring component (2), the static measuring component (7), the moving measuring component (8) and the lifting measuring component (2) are all evenly arranged symmetrically with respect to the centering support column (6); the outer diameter of the embedded structure between housing one (91) and housing two (92) and the inner spherical diameter of the differential housing (9) are measured by the static measuring component (7), the inner diameter of the embedded structure between housing one (91) and housing two (92) is measured by the lifting measuring component (2), and the moving measuring component (8) measures the diameter of the flange in the middle of the differential housing (9) and the inner spherical diameter of the differential housing (9). The distance from the flange to the reference plane; sensors facing the differential housing (9) are installed on the top surface of the column (3) and the support surface of the centering support column (6); after the mobile measuring component (8) moves horizontally to the differential housing (9), the horizontally oriented detection sensor (88) takes the value of the outer circumference of the flange, and the vertically downward oriented detection sensor (88) takes the value of the top surface of the flange; the structure of the mobile measuring component (8) is as follows: it includes a support (81) installed on the working platform (1), and a horizontal plate (82) welded to the top of the support (81) to form a whole, the horizontal plate (82) A vertical plate (85) and a moving cylinder (83) are installed at intervals on the front and back of the top. A moving plate (84) is installed on the moving end of the moving cylinder (83). The moving plate (84) moves toward the vertical plate (85). A matching guide pin (86) and a pin seat (87) are installed on the sides of the moving plate (84) and the vertical plate (85) facing each other. A transverse groove for the guide pin (86) is opened on the pin seat (87). Two sets of detection sensors (88) are installed on the moving plate (84) facing the flange horizontally and vertically respectively. Both the lifting measuring assembly (2) and the static measuring assembly (7) include a measuring power mechanism (10). The structure of the measuring power mechanism (10) is as follows: it includes a floating plate (102) and a fixed plate (106) arranged parallel to each other at an interval. Springs (105) are installed at both ends of the floating plate (102) and the fixed plate (106); a connecting block (103) is installed on the top surface of the fixed plate (106), and a vertical block (104) is installed on the bottom surface of the floating plate (102). A needle cylinder (107) is installed in the horizontally penetrating connecting block (103), and the output end of the needle cylinder (107) is fixed to the vertical block (104); a second detection sensor (101) is also installed in the horizontally penetrating connecting block (103), and the output end of the second detection sensor (101) faces the vertical block (104). A measuring hard point (108) is installed on the vertical block (104) that is directly opposite to the output end of the second detection sensor (101). The measuring power mechanism (10) drives the measuring points in the lifting measuring component (2) and static measuring component (7) to reset via the floating plate (102). The measuring points contact the wall surface of the first shell (91) or the wall surface of the second shell (92), and the measuring value is obtained by the second detection sensor (101) based on the change in the position of the measuring point.

2. The fully automatic adaptive measuring device for the left and right differential housings as described in claim 1, characterized in that: The structure of the lifting measuring component (2) is as follows: it includes a base plate (21) installed on the working platform (1), a lifting cylinder (23) installed on the top surface of the base plate (21), a lifting plate (24) installed on the output end of the lifting cylinder (23) facing upwards, a measuring power mechanism (10) installed on the top surface of the lifting plate (24), a connecting rod (28) installed on the floating plate (102) at the top of the measuring power mechanism (10), the end of the connecting rod (28) extending toward the differential housing (9) and a measuring rod (29) installed thereon, the measuring rod (29) extending to the differential housing (9). Inside, measuring points are installed on the outer side of the measuring rod (29); a stand (22) is installed on the base plate (21) on both sides of the lifting cylinder (23); a pin group (25) is installed on the top surface of the lifting plate (24) on both sides of the measuring power mechanism (10); the pin group (25) includes three pins arranged in a triangular structure; the side of the stand (22) facing the pin group (25) is equipped with a limiting piece (27) corresponding to the three pins; two of the limiting pieces (27) have long grooves in the same direction at their ends, and the other limiting piece (27) has a concave round hole for pin fitting at its end.

3. The fully automatic adaptive measuring device for the left and right differential housings as described in claim 1, characterized in that: The structure of the static measurement component (7) is as follows: it includes a bracket (71) installed on the working platform (1), a measuring power mechanism (10) installed on the top surface of the bracket (71), a connecting seat (73) installed on the top floating plate (102) of the measuring power mechanism (10), the connecting seat (73) extends toward the differential housing (9) and a support arm (74) is installed, and a measuring point is installed at the end of the support arm (74).

4. The fully automatic adaptive measuring device for the left and right differential housings as described in claim 3, characterized in that: In the static measuring assembly (7) for measuring the outer diameter, the support arm (74) is located outside the differential housing (9), and the measuring point at the end of the support arm (74) is in line contact with the differential housing (9); in the static measuring assembly (7) for measuring the inner spherical diameter, the support arm (74) extends into the differential housing (9), and the measuring point at the end of the support arm (74) is in point contact with the differential housing (9).

5. A measurement method for the fully automatic adaptive measuring device for the left and right differential housings as described in claim 1, characterized in that: The differential housing (9) is composed of two hemispherical housings, housing 1 (91) and housing 2 (92), assembled facing each other. The inner wall of housing 1 (91) has a flange (911) extending outward from the edge, and the inner wall of housing 2 (92) has a recess (921) that fits the flange (911) inward from the edge. A central hole is provided perpendicular to the mating surface of housing 1 (91) and housing 2 (92) and along the diameter direction. The outer opening of the central hole on housing 1 (91) and housing 2 (92) extends outward to form a main bearing hole (90). The opening end of housing 2 (92) extends outward to form a flange. The measurement method for the left and right housings of the differential includes separate measurements of housing one (91) and housing two (92); When measuring housing 1 (91), housing 1 (91) is fitted onto the centering support column (6) through the center hole, with the main bearing hole (90) facing upwards, and the bottom surface of housing 1 (91) is supported on the column (3) to form a reference surface; the inner spherical dimensions and the outer diameter dimensions of the flange (911) at multiple locations on housing 1 (91) are measured by the static measuring component (7); When measuring the second housing (92), the second housing (92) is fitted onto the centering support column (6) through the center hole, with the main bearing hole (90) facing upwards, and the bottom surface of the second housing (92) is supported on the column (3) to form a reference surface; the inner spherical dimensions at multiple positions on the second housing (92) are measured by the static measuring component (7); the lifting measuring component (2) moves upwards to measure the diameter at the notch (921) of the second housing (92); the moving measuring component (8) moves toward the second housing (92) to obtain the diameter of the flange and the distance of the top surface of the flange from the reference surface.

Images