Differential runout measuring device

Abstract

The utility model discloses a differential runout measuring device, which detects runout of a shell and a shell cover, improves the runout measuring efficiency and accuracy through radial and axial measurement, and reduces the risk that unqualified products flow out. A differential runout measuring device comprises a roller support, and the two ends of a differential are placed on the roller support respectively. A universal pressing head is arranged on one side of the roller support and installed on a piston rod of the air cylinder. The universal pressing head presses one end part of the differential mechanism for limiting; a driving device is arranged above the differential mechanism; a synchronous belt driven by a motor is arranged on the driving device, surrounds and wraps a shell of the differential mechanism, and drives the shell to rotate; the driving device is connected with a cylinder for lifting; the radial detection mechanism is installed on the first sliding rail in a sliding connection mode, and a first displacement sensor is installed on the radial detection mechanism. The axial detection mechanism is installed on the second sliding rail in a sliding connection mode, and a second positioning sensor is installed on the axial detection mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of differential detection devices, in particular to a differential runout measurement device. Background Art

[0002] During the driving process of the car, the speed difference between the left and right wheels is achieved through the split differential assembly. The split differential assembly is mainly composed of half-shaft gears, planetary gears, and the housing and cover of the differential. In the assembly process of the split differential assembly, the runout of the housing and cover after assembly directly affects the assembly of the large plate gear. Therefore, the runout detection of the split differential is also a core sequence of the assembly process.

[0003] At present, the detection devices of differentials generally only detect their performance. For example, the differential performance detection mechanism with application number CN201910996849.1 can detect torque loss, power loss, transmission efficiency recording and analysis. But it cannot detect the jumping displacement during the rotation of the differential. Summary of the invention

[0004] In view of the shortcomings of the above background technology, the purpose of the utility model is to provide a differential runout measuring device, which detects the runout of the housing and the housing cover. The radial and axial measurements improve the efficiency and accuracy of the runout measurement and reduce the risk of defective products flowing out.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0006] A differential runout measuring device comprises a roller bracket, on which two ends of the differential are respectively placed;

[0007] A universal pressure head is provided on one side of the roller bracket, and the universal pressure head is installed on the piston rod of the cylinder; the universal pressure head is located on the central axis of the differential, and the universal pressure head presses one end of the differential to limit the position;

[0008] A driving device is arranged above the differential; a synchronous belt driven by a motor is arranged on the driving device, the synchronous belt surrounds and covers the housing of the differential, and the synchronous belt drives the housing to rotate; the driving device is connected to a cylinder to realize lifting;

[0009] A radial detection mechanism is provided on the radial side of the differential, the radial detection mechanism is mounted on the first slide rail and is slidably connected, and a first displacement sensor is mounted on the radial detection mechanism;

[0010] An axial detection mechanism is arranged on one axial side of the differential, the axial detection mechanism is mounted on the second slide rail for sliding connection, and a second position sensor is mounted on the axial detection mechanism.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the roller bracket includes two first columns arranged opposite to each other, a third slide rail is provided between the two first columns, and a first slider is sleeved on the third slide rail; two first rollers are installed on the top of the outer first column, two second rollers are installed on the top of the first slider, and the two ends of the differential are placed on the first roller and the second roller respectively.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: a U-shaped first clamp is installed on the top of the first outer column, and the first clamp is inserted into the end of the differential; a first optical axis fixing ring is sleeved on the third slide rail, and the first optical axis fixing ring is attached to the first slider.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes a frame assembly; the frame assembly includes a first plate body, two fourth slide rails are installed on the first plate body, the second sliders on the two fourth slide rails are connected to the second plate body, the driving device is installed on the second plate body, and the second plate body is connected to the piston rod of the cylinder; the driving device includes an arched first fixed block, and the two ends of the first fixed block are connected and fixed to the second plate body; a motor is installed in the middle of the first fixed block, and a first pulley is installed on the output shaft of the motor; two second pulleys are installed on the first fixed block, and the two second pulleys are located below the first pulley to form a triangle, and the synchronous belt is sleeved on the first pulley and the second pulley.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes two third pulleys, the two third pulleys are arranged between the first pulley and the second pulley, and the synchronous belt is arranged in an S-shaped sleeve between the first pulley, the second pulley and the third pulley.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: the first slide rail is installed on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moved synchronously through an L-shaped slider; an L-shaped fixing block is installed on the L-shaped slider, and the first displacement sensor is installed on the L-shaped fixing block; the second slide rail is installed on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moved synchronously through the L-shaped slider; an L-shaped fixing block is installed on the L-shaped slider, and the second displacement sensor is installed on the L-shaped fixing block.

[0016] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0017] Compared with the prior art, the differential runout measuring device of the utility model comprises a roller bracket for placing the differential, a lifting drive device is arranged above the differential; the universal pressure head abuts against the differential through the piston rod of the cylinder; the synchronous belt of the drive device drives the differential to rotate through friction, and the radial detection mechanism and the axial detection mechanism respectively measure the maximum radial and axial movement values ​​of the differential;

[0018] This tooling is simple and convenient to use, can achieve the purpose of accurately measuring runout, and effectively ensure the delivery quality of customers. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall exploded structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the overall structure of the present utility model.

[0021] Figure 3 It is a schematic diagram of the rolling support structure of the present utility model.

[0022] Figure 4 It is a schematic diagram of the driving device structure of the present utility model.

[0023] Reference Numerals: roller support 01; first column 010; third slide rail 0100; first roller 0101; first clamping block 0102; first optical axis fixing ring 0103; first slider 011; second roller 0110; universal pressure head 02; driving device 03; first fixing block 030; first belt pulley 031; second belt pulley 032; third belt pulley 033; radial detection mechanism 04; first slide rail 040; first displacement sensor 041; L-shaped slider 042; L-shaped fixing block 043; axial detection mechanism 05; second slide rail 050; second displacement sensor 051; frame assembly 06; first plate body 060; fourth slide rail 0600; second plate body 0601; differential 07; Detailed Description of the Preferred Embodiments

[0024] The present utility model will be further described below with reference to the drawings in specific embodiments;

[0025] This embodiment provides a differential runout measuring device, including a roller support 01, and the roller support 01 is a carrier; both ends of the differential 07 are respectively placed on the roller support 01;

[0026] A universal pressure head 02 is provided on one side of the roller support 01. The universal pressure head 02 is a prior art and can rotate in all directions; the universal pressure head 02 is installed on the piston rod of a cylinder, and the cylinder drives the universal pressure head 02 to move back and forth through the piston rod; the universal pressure head 02 is located on the central axis of the differential 07, and the universal pressure head 02 presses against one end of the differential 07 for positioning;

[0027] A driving device 03 is arranged above the differential 07, and the driving device 03 is used to drive the differential 07 to rotate, simulating the state during use; a synchronous belt driven by a motor is arranged on the driving device 03, and the synchronous belt surrounds and covers the housing of the differential 07, and the synchronous belt drives the housing to rotate; the motor drives the synchronous belt to rotate, and the synchronous belt contacts the housing of the differential 07, and the friction drives the rotation; the driving device 03 is connected to a cylinder to realize lifting; after the measurement is completed, the piston rod of the cylinder extends to move the driving device 03 upward and separate it from the differential 07;

[0028] A radial detection mechanism 04 is provided on one radial side of the differential 07. The radial detection mechanism 04 is mounted on a first slide rail 040 for sliding connection. A first displacement sensor 041 is mounted on the radial detection mechanism 04. The first displacement sensor 041 is used to measure the maximum displacement value of the differential 07 in the radial direction.

[0029] An axial detection mechanism 05 is provided on one axial side of the differential 07. The axial detection mechanism 05 is mounted on the second slide rail 050 for sliding connection. A second displacement sensor 051 is installed on the axial detection mechanism 05. The second displacement sensor is used to measure the maximum displacement value of the differential 07 in the axial direction;

[0030] As described above, in the specific use process, the assembled differential 07 is placed on the roller bracket 01 by a robot or manually; the universal pressure head 02 on the end face presses the end face of the differential 07 under the drive of the cylinder to ensure the axial positioning of the shell; the radial detection mechanism 04 and the axial detection mechanism 05 move to the shell measurement position; the driving device 03, under the drive of the cylinder, moves the synchronous belt down to press on the surface of the shell (the wrap angle of the synchronous belt is greater than the deweighting angle of the dynamic balance), and drives the synchronous belt to drive the shell to rotate through the motor; during the rotation, the number of rotations and angles of the differential 07 are guaranteed (to ensure that the synchronous belt can return to the initial position when it slips); after the set number of rotations is evenly rotated, the first sensor and the second sensor record the maximum displacement value during the measurement process; after the measurement is completed, the driving device 03 moves the differential 07 up to stop rotating, and the robot or manual takes the differential 07 away and places it on the pallet to flow to the next station to complete the automated runout measurement.

[0031] Furthermore, the roller bracket 01 includes two first columns 010 arranged opposite to each other, and the first columns 010 are two block-shaped metals; a third slide rail 0100 is arranged between the two first columns 010, and a first slider 011 is sleeved on the third slide rail 0100; the first slider 011 is sleeved on the third slide rail 0100 and can move forward and backward; the two ends of the third slide rail 0100 are respectively welded and fixed to the first column 010 and the second column; or bolts are screwed into the two to connect and fix them;

[0032] At the top of the first outer column 010, two first rollers 0101 are installed. At the top of the first slider 011, two second rollers 0110 are installed. Both ends of the differential 07 are respectively placed on the first rollers 0101 and the second rollers 0110.

[0033] As described above, as shown in the appendix Figure 3 As shown, the differential 07 placed on the two first rollers 0101 and the second rollers 0110 can rotate freely. The first slider 011 can move on the third slide rail 0100 to match different specifications of the differential 07, which is more practical;

[0034] Preferably, in order to ensure the stability of the first slider 011, the third slide rail 0100 can be increased to two parallel ones passing through.

[0035] Furthermore, at the top of the first outer column 010, a U-shaped first clamping block 0102 is installed. The first clamping block 0102 is sleeved on the end of the differential 07; the first clamping block 0102 is a metal block or a rubber block. Bolts pass through the first clamping block 0102 and are fixed on the top surface of the first column 010 to limit the excessive speed during the rotation of the differential 07 and avoid damage caused by flying out.

[0036] A first optical axis fixing ring 0103 is sleeved on the third slide rail 0100, and the first optical axis fixing ring 0103 is in contact with the first slider 011.

[0037] As described above, the optical axis fixing ring is a prior art. Turn the handle to screw the bolt into the opening of the fixing ring to tighten and fix it on the optical axis; the first optical axis fixing ring 0103 limits the movement of the first slider 011 to ensure the smooth rotation of the differential 07.

[0038] Furthermore, it also includes a frame assembly 06; the frame assembly 06 includes a first plate body 060. Two fourth slide rails 0600 are installed on the first plate body 060. The second slider on the two fourth slide rails 0600 is connected to a second plate body 0601. The driving device 03 is installed on the second plate body 0601, and the second plate body 0601 is connected to the piston rod of the cylinder;

[0039] The first plate body 060 is a vertically arranged plane for installing two fourth slide rails 0600. The second plate body 0601 is installed on the fourth slide rails 0600 to achieve the effect of moving up and down; the piston rod of the cylinder drives the second plate body 0601 to move up and down;

[0040] The driving device 03 includes an arched first fixing block 030. Both ends of the first fixing block are fixedly connected to the second plate body 0601; the first fixing block and the second plate body 0601 are fixedly connected by bolts passing through; a motor is installed in the middle of the first fixing block 030, and a first pulley 031 is installed on the output shaft of the motor; the output shaft of the motor drives the first pulley 031 to rotate;

[0041] Two second pulleys 032 are installed on the first fixed block 030 . The two second pulleys 032 are located below the first pulley 031 and form a triangle. The synchronous belt is sleeved on the first pulley 031 and the second pulley 032 .

[0042] As described above, the annular synchronous belt is sleeved on the first pulley 031 and the second pulley 032, which are stretched open, and the motor drives the synchronous belt to rotate and drive the differential 07 to rotate;

[0043] Furthermore, two third pulleys 033 are included. The two third pulleys 033 are arranged between the first pulley 031 and the second pulley 032. The synchronous belt is arranged in an S-shaped sleeve between the first pulley 031, the second pulley 032 and the third pulley 033.

[0044] As mentioned above, if attached Figure 4 As shown, the annular synchronous belt is sleeved on the outside of the first pulley 031, then wrapped around the inside of the second pulley 032, and then wrapped around the outside of the third pulley 033 to achieve a complete wrap. The third pulley 033 has a tensioning effect to prevent the synchronous belt from loosening.

[0045] Furthermore, the first slide rail 040 is mounted on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moves synchronously through the L-shaped slider 042; an L-shaped fixing block 043 is mounted on the L-shaped slider 042, and the first displacement sensor 041 is mounted on the L-shaped fixing block 043;

[0046] The second slide rail 050 is installed on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moves synchronously through the L-shaped slider 042; an L-shaped fixing block 043 is installed on the L-shaped slider 042, and the second displacement sensor is installed on the L-shaped fixing block 043.

[0047] As described above, the installation and use principles of the first displacement sensor 041 and the second displacement sensor are the same, which is the existing technology and not a technical improvement of the present technical solution, and will not be repeated here; as shown in the figure, the piston rod of the cylinder is telescopically connected to one end of the L-shaped slider 042 to achieve forward and backward movement, and the bottom of the L-shaped fixed block 043 is installed on the L-shaped slider 042 to move forward and backward synchronously, so that the first displacement sensor 041 and the second displacement sensor can move forward and backward to contact the housing, which is used to measure the maximum displacement value of the differential 07 jump.

[0048] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection.

[0050] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A differential runout measuring device, characterized in that: It includes a roller bracket, and the two ends of the differential are respectively placed on the roller bracket; A universal pressure head is provided on one side of the roller bracket, and the universal pressure head is installed on the piston rod of the cylinder; the universal pressure head is located on the central axis of the differential, and the universal pressure head presses one end of the differential to limit the position; A driving device is arranged above the differential; a synchronous belt driven by a motor is arranged on the driving device, the synchronous belt surrounds and covers the housing of the differential, and the synchronous belt drives the housing to rotate; the driving device is connected to a cylinder to realize lifting; A radial detection mechanism is provided on the radial side of the differential, the radial detection mechanism is mounted on the first slide rail and is slidably connected, and a first displacement sensor is mounted on the radial detection mechanism; An axial detection mechanism is arranged on one axial side of the differential, the axial detection mechanism is mounted on the second slide rail for sliding connection, and a second position sensor is mounted on the axial detection mechanism.

2. The differential runout measuring device according to claim 1, characterized in that: The roller bracket comprises two first upright posts arranged opposite to each other, a third slide rail is arranged between the two first upright posts, and a first slide block is sleeved on the third slide rail; Two first rollers are installed on the top of the first outer column, two second rollers are installed on the top of the first slider, and the two ends of the differential are respectively placed on the first rollers and the second rollers.

3. The differential runout measuring device according to claim 2, characterized in that: A U-shaped first clamping block is installed on the top of the first outer column, and the first clamping block is inserted into the end of the differential; A first optical axis fixing ring is sleeved on the third slide rail, and the first optical axis fixing ring is in contact with the first sliding block.

4. The differential runout measuring device according to claim 1, characterized in that: It also includes a frame assembly; the frame assembly includes a first plate body, two fourth slide rails are installed on the first plate body, the second sliders on the two fourth slide rails are connected to the second plate body, the driving device is installed on the second plate body, and the second plate body is connected to the piston rod of the cylinder; The driving device comprises an arched first fixing block, both ends of which are connected and fixed to the second plate body; a motor is installed in the middle of the first fixing block, and a first pulley is installed on the output shaft of the motor; Two second pulleys are installed on the first fixed block. The two second pulleys are located below the first pulley and enclose a triangle. The synchronous belt is sleeved on the first pulley and the second pulley.

5. The differential runout measuring device according to claim 4, characterized in that: It also includes two third pulleys, which are arranged between the first pulley and the second pulley, and the synchronous belt is arranged in an S-shaped sleeve between the first pulley, the second pulley and the third pulley.

6. The differential runout measuring device according to claim 1, characterized in that: The first slide rail is installed on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moves synchronously through the L-shaped slider; an L-shaped fixing block is installed on the L-shaped slider, and the first displacement sensor is installed on the L-shaped fixing block; The second slide rail is installed on the outer shell of the cylinder, and the piston rod of the cylinder is connected and moves synchronously through an L-shaped slider; an L-shaped fixing block is installed on the L-shaped slider, and the second displacement sensor is installed on the L-shaped fixing block.

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