A differential shell shaft hole alignment measuring device

Abstract

The application relates to the field of laser measurement technology and discloses a differential mechanism shell shaft hole alignment measurement device, which comprises a detection table and an adjusting arm movably arranged on the detection table, and a laser detection head is arranged at the end of the adjusting arm; the device further comprises a workpiece positioner arranged on the table top of the detection table, a mounting arm rotatably arranged on the workpiece positioner, a limiting piece and a bearing round rod respectively arranged at the middle section and the end of the mounting arm, the limiting piece being used for wrapping type limiting of the tail part of the differential mechanism shell workpiece, a rotating wheel rotatably arranged at the end of the mounting arm, an elastic sticky piece arranged on the outer side of the middle shaft of the rotating wheel, and the rotating wheel and the elastic sticky piece realizing rotation regulation and control of the differential mechanism shell around the central axis of the differential mechanism shell. The differential mechanism shell shaft hole alignment measurement device is convenient for adjusting and controlling differential mechanism shell assembly, convenient for subsequent laser measurement of shaft hole alignment, and improves the measurement efficiency and accuracy during laser measurement of shaft hole alignment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser measurement of differential housing, in particular to a differential housing shaft hole alignment measurement device. BACKGROUND

[0002] After the differential housing is cast and formed, and the burrs and impurities or by-products on the workpiece are removed by milling, drilling and milling processing needs to be performed on the differential housing workpiece to provide a positioning location for the transmission shaft assembly of the differential. Due to the influence of external environmental factors such as operation process, the shaft holes of the differential housing may have alignment differences, so that the two shaft holes cannot be kept on the same axis, affecting the subsequent installation and use of differential parts. Therefore, after the differential housing is processed and formed, batch shaft hole alignment laser measurement sampling inspection is required to reduce the shaft hole alignment error of the differential housing formed by single batch mechanical forming.

[0003] The existing differential housing needs to be clamped and positioned before measurement when implementing shaft hole alignment measurement. During the clamping and positioning process, the burrs at the measurement position and the concave-convex surface of the differential housing itself may affect the differential housing, so that the differential housing cannot be quickly and effectively maintained in a good horizontal positioning state. After positioning, there may be an alignment angle difference between the differential housing and the laser measurement instrument used for measurement, affecting the accuracy of laser alignment measurement. In addition, after the differential housing is positioned, the shaft hole alignment measurement is performed by moving the laser measurement instrument, which has many measurement points and low measurement efficiency.

[0004] In view of the above problems, it is necessary to make innovative design on the basis of the original differential housing shaft hole alignment measurement device. SUMMARY

[0005] The present application aims to provide a differential housing shaft hole alignment measurement device to solve the above-mentioned problems of the existing differential housing shaft hole alignment measurement device, which uses a laser measurement instrument to implement shaft hole alignment measurement, has low operation efficiency, and is easily affected by the positioning of the differential housing, thereby affecting the measurement accuracy.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a differential housing shaft hole alignment measurement device, comprising a detection table and an adjusting arm movably arranged on the detection table, and a laser detection head arranged at the end of the adjusting arm;

[0007] Further comprising: a workpiece positioner arranged on the table top of the detection table, and a mounting arm rotatably arranged on the workpiece positioner, a limiting piece and a bearing round rod are respectively arranged at the middle segment and the end of the mounting arm, the limiting piece is used for wrapping and limiting the tail part of the differential housing workpiece, and the limiting piece and the bearing round rod jointly realize lever positioning and horizontal control of the differential housing workpiece.

[0008] The rotating wheel is rotatably installed at the end of the mounting arm, and the elastic sticking member is arranged outside the middle shaft of the rotating wheel, so that the rotating wheel and the elastic sticking member realize the rotation control of the differential housing around the center axis thereof.

[0009] Preferably, the smooth outer wall of the bearing round rod is tangent to the bottom of the outer wall of the differential housing workpiece; and the limiting member is used for wrapping and clamping the tail of the differential housing workpiece, and the up-pushing and down-pulling control of the tail of the differential housing workpiece, so that the differential housing workpiece takes the position of the bearing round rod as the rotating node, and achieves the lever type overhanging positioning control.

[0010] Preferably, the limiting member is composed of a telescopic rod, a receiving plate and a tension belt, wherein the elastic member is arranged at the connection between the telescopic rod and the mounting arm and the two ends of the receiving plate, and the tension belt is fixed between the adjacent receiving plates.

[0011] The movable member is movably arranged on the tension belt and the receiving plate, and the movable member is rollingly connected between the outer wall of the differential housing workpiece.

[0012] Preferably, the elastic member is used for the fixed connection between the telescopic rod and the mounting arm and the receiving plate, and realizes the rotation control of the end of the telescopic rod and the connection between the mounting arm and the receiving plate.

[0013] Preferably, the rotating wheel and the mounting arm are one-to-one corresponding, and both are symmetrically arranged on the workpiece positioner, wherein a space is reserved between the outer wall of the rotating wheel and the differential housing workpiece.

[0014] Preferably, the elastic sticking member is arranged in a cylindrical structure, and the inner wall of the middle part is fixed to the outer wall of the middle shaft of the rotating wheel, and the elastic sticking member is arranged in a sticking manner between the differential housing workpiece.

[0015] Preferably, the end of the elastic sticking member is fixed with a movable plate, the movable plate is slidably connected with the outer wall of the middle shaft of the rotating wheel, and the connecting end of the elastic sticking member is outwardly protruding.

[0016] Meanwhile, the electromagnetic member is movably arranged on the outer wall of the rotating wheel, and the permanent magnet arranged in the back of the movable plate is repelled by the electromagnetic member.

[0017] Preferably, the outer wall of the elastic sticking member further reserves a sticking channel, which improves the elasticity of the elastic sticking member and the sticking property between the elastic sticking member and the differential housing workpiece.

[0018] Preferably, the electromagnetic component and the differential housing workpiece are reserved with a spacing, and the electromagnetic components on the left and right sides of the rotating wheel are coaxially arranged, and the coaxial axis is vertically arranged between the differential housing workpiece, and the electromagnetic component uses the electromagnetic driving ampere force to assist the rotation of the differential housing workpiece.

[0019] Preferably, the laser detection head moves horizontally and controls the rotation angle on the adjusting arm through electromagnetic action, wherein the back of the laser detection head is coaxially fixed with a calibration piece;

[0020] Meanwhile, the lower end of the adjusting arm on the side of the laser detection head is also fixed with a support, and the support is used for bearing the front end of the differential housing workpiece, and the back of the differential housing workpiece is also fixed with a detection piece on the workpiece positioner outside the shaft hole, and the detection piece and the laser detection head are used for the shaft hole alignment measurement of the differential housing workpiece.

[0021] Compared with the prior art, the differential housing shaft hole alignment measurement device is suitable for the adjustment control of the differential housing assembly, facilitates the subsequent laser measurement of the shaft hole alignment, and can also assist the rotation of the differential housing, thereby improving the measurement efficiency and accuracy during the shaft hole alignment laser measurement.

[0022] Only the upper push and the pull control of the limiting piece on the mounting arm and the sliding support of the bearing round rod to the differential housing workpiece are needed, so that the differential housing workpiece is positioned on the workpiece positioner in a lever type cantilever manner, the adjustment of the differential housing towards the angle is facilitated, the laser detection head is coaxially aligned, and the shaft hole alignment measurement of the differential housing is facilitated.

[0023] Further, the rotating wheel and the elastic sticky piece thereon are arranged on the mounting arm, which can preliminarily limit the cantilever type positioning of the differential housing workpiece, so that the differential housing workpiece is not easy to fall, and the elastic sticky piece can also elastically bear the differential housing workpiece, and can realize the rotation of the differential housing workpiece by using the repeated action of viscous adhesion, complete the alignment measurement control of the differential housing shaft hole, and improve the comprehensiveness and accuracy of the measurement.

[0024] Still further, the electromagnetic component and the rotating wheel are arranged, under the electromagnetic repulsive force, so that the elastic sticky piece is deformed and adheres to the differential housing, which can more stably drive the rotation of the differential housing, and can also use electromagnetic driving to assist the smoothness of the rotation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front structure schematic view of the present application;

[0026] Figure 2 It is a back structure schematic view of the present application;

[0027] Figure 3It is the installation distribution front structure schematic diagram of laser detection head and calibration piece and support piece of the present application;

[0028] Figure 4 It is the installation distribution side structure schematic diagram of laser detection head and calibration piece and support piece of the present application;

[0029] Figure 5 It is the use schematic diagram of installation arm of the present application;

[0030] Figure 6 It is the installation schematic diagram of limiting piece of the present application;

[0031] Figure 7 It is the structure schematic diagram of limiting piece of the present application;

[0032] Figure 8 It is the distribution schematic diagram of rotating wheel and electromagnetic component of the present application;

[0033] Figure 9 It is the structure schematic diagram of elastic sticky piece of the present application.

[0034] In the figure: 1, detection table;2, adjusting arm;3, laser detection head;301, calibration piece;302, support piece;303, detection piece;4, workpiece positioner;5, installation arm;6, limiting piece;601, telescopic rod;602, receiving plate;603, tension belt;604, movable piece;7, bearing round rod;8, rotating wheel;9, elastic sticky piece;901, movable plate;902, sticky channel;10, electromagnetic component. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Embodiment one: please refer to Figures 1-9 The present application provides a technical solution: a differential housing shaft hole alignment measurement device, comprising a detection table 1 and an adjusting arm 2 movably arranged thereon, and the end of the adjusting arm 2 is provided with a laser detection head 3. In the technical solution, the adjusting arm 2 is controlled by hydraulic pressure, and the adjusting arm 2 can be vertically telescopic and horizontally movable, so that the laser detection head 3 can move in position on the X axis and the Z axis, and the movement of the Y axis is realized by a workpiece positioner 4, which drives the differential housing workpiece mounted thereon to move, and performs shaft hole alignment laser measurement of the differential housing workpiece.

[0037] As Figures 5-7The technical solution shown is as follows: A workpiece locator 4 is installed on the table surface of the inspection table 1. A mounting arm 5 is rotatably mounted on the workpiece locator 4. A limiting component 6 and a bearing rod 7 are respectively installed at the middle and end of the mounting arm 5. The limiting component 6 is used for wrapping and limiting the tail of the differential housing workpiece. The limiting component 6 and the bearing rod 7 together achieve lever-type positioning and horizontal control of the differential housing workpiece. The smooth outer wall of the bearing rod 7 is tangent to the bottom of the outer wall of the differential housing workpiece. The limiting component 6 is used for wrapping and clamping the tail of the differential housing workpiece, as well as for pushing and pulling the tail of the differential housing workpiece upwards and downwards, so that the differential housing workpiece uses the position of the bearing rod 7 as the rotation node to achieve lever-type cantilever positioning control. When the differential housing workpiece is... During assembly on the workpiece positioner 4, the bottom of the differential housing workpiece is placed tangentially on the bearing rod 7. The bearing rod 7 supports the differential housing workpiece, while the limiting member 6 clamps and wraps the tail of the differential housing workpiece. The limiting member 6 also controls the upward or downward movement of the tail of the differential housing workpiece, allowing it to rotate in a cantilevered manner around the contact point with the bearing rod 7. This controls the orientation of the differential housing workpiece, ensuring it remains coaxial with the laser probe 3 for subsequent laser measurements. The orientation of the differential housing workpiece can also be adjusted by rotating the mounting arm via a motor, allowing for angle adjustment of the mounting arm and the entire differential housing workpiece on it.

[0038] In the above technical solution, the limiting component 6 is composed of a telescopic rod 601, a receiving plate 602, and a tension band 603. Elastic elements are provided at the connection points between the telescopic rod 601 and the mounting arm 5 and the two ends of the receiving plate 602. A tension band 603 is fixed between adjacent receiving plates 602. Movable components 604 are embedded and movably mounted on both the tension band 603 and the receiving plate 602, and these movable components 604 are in a rolling connection with the outer wall of the differential housing. The elastic elements are used for the fixed connection between the telescopic rod 601 and the mounting arm 5 and the receiving plate 602, and for realizing the connection between the telescopic rod 601 and the mounting arm 5 and the receiving plate 602. Rotation control at the connection point between the end and the mounting arm 5 and the receiving plate 602; the telescopic rod 601 is electromagnetically controlled, enabling precise control of extension and retraction. The receiving plate 602 and the tension belt 603 control the upward or downward movement of the tail of the differential housing workpiece. The receiving plate 602 provides an upward external force to the tail of the differential housing workpiece, while the tension belt 603 is located on the upper side of the tail of the differential housing workpiece and provides a downward external force. At the same time, the rolling installation of the movable part 604 reduces the contact friction between the differential housing workpiece and the limiting part 6 after positioning, facilitating subsequent rotation around its central axis.

[0039] The rotating wheel 8 is rotatably installed at the end position of the mounting arm 5, the middle part of the rotating wheel 8 is provided with an elastic sticky part 9 outside the middle shaft, and the rotating wheel 8 and the elastic sticky part 9 realize the rotation control of the differential housing around the center axis thereof; the laser detection head 3 moves horizontally and controls the rotation angle through electromagnetic action on the adjusting arm 2, wherein the back of the laser detection head 3 is coaxially fixed with a calibration part 301; meanwhile, the lower end of the adjusting arm 2 at the side of the laser detection head 3 is also fixed with a supporting part 302, and the supporting part 302 is used for bearing the front end of the differential housing workpiece; meanwhile, the workpiece positioner 4 outside the shaft hole of the back of the differential housing workpiece is also fixed with a detection part 303, and the detection part 303 and the laser detection head 3 are used for the shaft hole alignment measurement of the differential housing workpiece.

[0040] In the above scheme, the supporting part 302 bears the bottom of the first end position of the differential housing workpiece, so that it will not fall off during detection, and the supporting part 302 is provided with an electric telescopic device and a ball structure at the end of the device, which improves the bearing stability of the end of the differential housing workpiece and reduces the damping effect of friction thereon; the use of the laser detection head 3 and the calibration part 301 can realize the detection of the laser detection head 3 before the shaft hole alignment, and when used, the laser detection head 3 and the detection part 303 are first aligned and detected, the laser detection is used to judge whether the detection part 303 is in a vertical alignment state with the laser detection head 3, after the vertical alignment, the calibration part 301 is used, the calibration part 301 adopts a structure composed of a contact rod and a ruby at the end, and under the control of the numerical control integrated circuit, the calibration part 301 is in contact with the inner wall circumference of the shaft hole at the first end of the differential housing workpiece on the mounting arm 5, so as to obtain the center node of the shaft hole at the first end of the differential housing workpiece, so as to adjust the positions of the calibration part 301 and the laser detection head 3, so that the coaxial alignment between the laser detection head 3 and the differential housing workpiece after the preliminary alignment is realized, after the preliminary coaxial alignment, the laser detection head 3 moves horizontally relative to the adjusting arm 2 through electromagnetic control, and the horizontal movement track of the laser detection head 3 is the diameter of the shaft hole at the first end of the differential housing workpiece, so that the laser detection head 3 passes through the shaft hole at the first end of the differential housing workpiece and the shaft hole at the tail end of the differential housing workpiece, and acts on the detection part 303 on the workpiece positioner 4, to judge whether the shaft hole at the first end and the tail end of the differential housing workpiece are aligned, in order to improve the effect of the laser alignment shaft hole measurement, by rotating the differential housing workpiece on the workpiece positioner 4, the laser detection head 3 can be measured comprehensively and efficiently when moving horizontally, and whether the shaft hole at the first end and the tail end of the differential housing workpiece are aligned in the whole range.

[0041] The rotating wheel 8 is rotatably installed at the end position of the mounting arm 5, the middle part of the rotating wheel 8 is provided with the elastic sticky part 9 outside the middle shaft, the rotating wheel 8 and the elastic sticky part 9 realize the rotation control of the differential housing around the center axis thereof; the rotating wheel 8 and the mounting arm 5 are one-to-one corresponding, and both are symmetrically arranged on the workpiece positioner 4, wherein the outer wall of the rotating wheel 8 is provided with a spacing between the differential housing workpiece; in the technical solution, the rotating wheel 8 can temporarily position the differential housing when the differential housing is installed on the workpiece positioner 4, and due to the spacing, the angle adjustment control of the differential housing is not affected.

[0042] Meanwhile, in the technical solution, the elastic sticky part 9 is provided in a cylindrical structure, the inner wall of the middle part is fixed to the outer wall of the middle shaft of the rotating wheel 8, and the elastic sticky part 9 is provided between the differential housing workpiece; the elastic sticky part 9 can be an elastic polyurethane glue stick, etc., which provides elastic support for the placement when the differential housing workpiece is placed and the angle is adjusted, and the elastic sticky part 9 can be driven to rotate by the motor assembly, and the contact and adhesion of the elastic sticky part 9 to the differential housing can be utilized, in the process of continuous rotation, the adhesion of the aluminum alloy differential housing is pulled by the adhesion, a pulling force is given and the adhesion is separated, the repeated action drives the differential housing to rotate around the center axis thereof, and the shaft hole alignment detection is performed.

[0043] Further, the end of the elastic sticky part 9 is fixed with the movable plate 901, the movable plate 901 is in sliding connection with the middle shaft outer wall of the rotating wheel 8, and the connecting end of the elastic sticky part 9 is provided with an outward protrusion; meanwhile, the electromagnetic member 10 is embeddedly installed on the outer wall of the rotating wheel 8, the electromagnetic member 10 and the permanent magnet embedded on the back surface of the movable plate 901 repel each other magnetically; the outer wall of the elastic sticky part 9 is also provided with a sticky channel 902, which improves the elasticity of the elastic sticky part 9 and the adhesion between the elastic sticky part 9 and the differential housing workpiece; the electromagnetic member 10 is provided with a spacing from the differential housing workpiece, and the electromagnetic members 10 on the left and right sides of the rotating wheel 8 are coaxially arranged, and the coaxial axis thereof is perpendicular to the differential housing workpiece, the electromagnetic member 10 utilizes the ampere force of electromagnetic drive to assist the rotation of the differential housing workpiece; under the combined action of the electromagnetic member 10 and the rotating wheel 8, when the electromagnetic member 10 is started, the electromagnetic member 10 gives the movable plate 901 at the end of the elastic sticky part 9 a pushing force through magnetic repulsion, so that the end of the elastic sticky part 9 deforms to increase the contact surface and adhesion with the differential housing workpiece, so that the differential housing workpiece can be well rotated when the rotating wheel 8 rotates, realizing the shaft hole alignment measurement, and the use of the electromagnetic member 10 and the rotating wheel 8 can also drive the differential housing workpiece to rotate around the center axis thereof through electromagnetic effect when rotating, so that the movement is more smooth, and the effect of auxiliary rotation is achieved.

[0044] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the alignment of shaft holes in a differential housing, comprising a testing platform (1) and an adjusting arm (2) movably mounted thereon, wherein a laser probe (3) is provided at the end of the adjusting arm (2); Its features are, Also includes: A workpiece locator (4) is set on the table surface of the inspection table (1), and a mounting arm (5) is rotatably provided on the workpiece locator (4). A limiting component (6) and a bearing rod (7) are respectively installed in the middle section and at the end of the mounting arm (5). The limiting component (6) is used for wrapping and limiting the tail of the differential housing workpiece. The limiting component (6) and the bearing rod (7) together realize the lever positioning and horizontal control of the differential housing workpiece. The smooth outer wall of the bearing rod (7) is tangent to the bottom of the outer wall of the differential housing workpiece. The limiting component (6) is used for wrapping and clamping the tail of the differential housing workpiece, as well as for pushing and pulling the tail of the differential housing workpiece upward and downward. The differential housing workpiece is rotated with the bearing rod (7) as the pivot point, achieving lever-type cantilever positioning control; the limiting part (6) is composed of a telescopic rod (601), a receiving plate (602) and a tension belt (603). The telescopic rod (601) is provided with elastic elements at the connection points between the mounting arm (5) and the two ends of the receiving plate (602), and a tension belt (603) is fixed between adjacent receiving plates (602); the tension belt (603) and the receiving plate (602) are both embedded with movable parts (604), and the movable parts (604) are rolled to the outer wall of the differential housing workpiece; The rotating wheel (8) is rotatably mounted at the end of the mounting arm (5). An elastic adhesive (9) is provided on the outer side of the central shaft of the rotating wheel (8). The rotating wheel (8) and the elastic adhesive (9) realize the rotational adjustment of the differential housing around its own central axis.

2. The device for measuring the alignment of shaft holes in a differential housing according to claim 1, characterized in that: The elastic element is used for the fixed connection between the telescopic rod (601) and the mounting arm (5) and the receiving plate (602), and to realize the rotation control of the connection between the end of the telescopic rod (601) and the mounting arm (5) and the receiving plate (602).

3. The device for measuring the alignment of shaft holes in a differential housing according to claim 1, characterized in that: The rotating wheel (8) corresponds one-to-one with the mounting arm (5), and both are symmetrically arranged on the workpiece locator (4). A gap is reserved between the outer wall of the rotating wheel (8) and the differential housing workpiece.

4. The device for measuring the alignment of shaft holes in a differential housing according to claim 3, characterized in that: The elastic adhesive (9) is arranged in a cylindrical structure, with its inner wall fixed to the outer wall of the central shaft of the rotating wheel (8), and the elastic adhesive (9) is bonded to the differential housing workpiece.

5. A device for measuring the alignment of shaft holes in a differential housing according to claim 4, characterized in that: The end of the elastic adhesive (9) is fixed with a movable plate (901). The movable plate (901) and the outer wall of the central shaft of the rotating wheel (8) are slidably connected. At the same time, the connection end between the elastic adhesive (9) and the movable plate (901) is protruding outward. Meanwhile, an electromagnetic component (10) is embedded in the outer wall of the rotating wheel (8), and the electromagnetic component (10) and the permanent magnet embedded in the back of the movable plate (901) are magnetically repelled.

6. A device for measuring the alignment of shaft holes in a differential housing according to any one of claims 1 or 3-5, characterized in that: The outer wall of the elastic adhesive part (9) is also provided with an adhesive channel (902), wherein the adhesive channel (902) improves the elasticity of the elastic adhesive part (9) and improves the adhesive properties between the elastic adhesive part (9) and the differential housing workpiece.

7. A device for measuring the alignment of shaft holes in a differential housing according to claim 6, characterized in that: The electromagnetic component (10) has a pre-reserved gap with the differential housing workpiece, and the electromagnetic components (10) on the left and right sides of the rotating wheel (8) are coaxially arranged, with their coaxial axis perpendicular to the differential housing workpiece. The electromagnetic component (10) uses the Ampere force driven by electromagnetic drive to assist the rotation of the differential housing workpiece.

8. A device for measuring the alignment of shaft holes in a differential housing according to claim 1, characterized in that: The laser probe (3) moves horizontally and rotates at an angle on the adjusting arm (2) via electromagnetic action. A calibration piece (301) is coaxially fixed on the back of the laser probe (3). Meanwhile, a support (302) is fixed at the lower end of the adjusting arm (2) on the side of the laser probe (3). The support (302) is used to support the front end of the differential housing workpiece. Meanwhile, a probe (303) is fixed on the workpiece locator (4) on the outer side of the shaft hole on the back of the differential housing workpiece. The probe (303) and the laser probe (3) are used for the shaft hole alignment measurement of the differential housing workpiece.

Images