Torsion beam rapid detection system

Abstract

The utility model discloses a torsion beam rapid detection system, which comprises a detection table, a detection mechanism, a centering mechanism and a sleeve clamping mechanism are arranged on the table top of the detection table, the detection mechanism is used for pre-positioning and detecting two hub plates on a torsion beam, the centering mechanism is used for correcting the position of a torsion beam sleeve in the sleeve clamping mechanism, and the sleeve clamping mechanism is used for clamping the sleeve. The sleeve clamping mechanism is used for limiting and clamping a sleeve on the torsion beam; the torsion beam rapid detection system is reasonable in structural design and meticulous in logic, stable and reliable centering clamping of the torsion beam can be guaranteed through the mechanism of the detection table, high-precision measurement of a hub plate can be achieved through the dial indicator, data processing is timely and efficient, measurement of the key size of the torsion beam can be achieved through one-time clamping and positioning, the monitoring capacity of 100% full detection is achieved, and the detection efficiency is improved. A parameter source is provided for tracing, and the detection efficiency, stability and precision are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of torsion beam detection, in particular to a torsion beam rapid detection system. Background Art

[0002] like Figure 1 and Figure 2 The structure of the torsion beam shown in the figure is mainly composed of the following parts: crossbeam 1, longitudinal arm 2, connecting arm 3, sleeve 4, hub plate 5. The torsion beam is formed by welding multiple irregular parts. The accuracy of the toe angle and camber angle of the hub plate directly affects the assembly of the whole vehicle, which is not conducive to the stability and regulations of the vehicle. At present, the toe angle and camber angle detection of the torsion beam mainly include single-piece inspection fixtures, assembly inspection fixtures, and three-coordinate inspection, but they cannot quickly output key dimensions, angle parameters, etc. at the same time, the efficiency is low and cannot meet the purpose of 100% full inspection and traceability. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a rapid detection system for a torsion beam, which achieves the purpose of accurate and efficient detection in a relatively low cost and reliable method.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a torsion beam rapid detection system, including a detection table, characterized in that: a detection mechanism, a centering mechanism, and a sleeve clamping mechanism are arranged on the table of the detection table, the detection mechanism is used to pre-position and detect the two hub plates on the torsion beam, the centering mechanism is used to correct the position of the torsion beam sleeve in the sleeve clamping mechanism, and the sleeve clamping mechanism is used to limit and clamp the sleeve on the torsion beam;

[0005] The structure of the detection mechanism includes a left detection device and a right detection device with the same structure; the left detection device includes a pre-support frame, a secondary positioning pin, a detection sliding mechanism, a profiling plate, a micrometer, a fixing frame and a detection cylinder, the pre-support frame is fixed on the table top of the detection table, the pre-support frame is used to support the longitudinal arm of the torsion beam, the secondary positioning pin is slidably connected with the pre-support frame, that is, the pre-support frame is provided with a pin hole matching the secondary positioning pin, the secondary positioning pin is used to limit the position of the hub plate on the torsion beam, the detection sliding mechanism and the detection cylinder are fixed on the table top of the detection table, the profiling plate is fixed on the detection sliding mechanism through the fixing frame, the front side of the profiling plate can fit with the end face of the hole on the hub plate of the torsion beam, a plurality of micrometers are fixed on the back side of the profiling plate, the micrometer is fixed on the detection sliding mechanism through the micrometer fixing frame, and the detection sliding mechanism drives the micrometer to move through the detection cylinder.

[0006] The above technical solution is further limited. The structure of the centering mechanism includes a guide cylinder, a slider, a left centering push rod and a right centering push rod. The guide cylinder is fixed on the table top of the inspection table. The slider is fixed on the piston rod of the guide cylinder. The slider is connected to one end of the left centering push rod and the right centering push rod by an inclined sliding connection. The left centering push rod and the right centering push rod are symmetrically arranged. The left centering push rod and the right centering push rod can provide corrective force to the sleeve clamping mechanism.

[0007] The above technical solution is further limited. The structure of the sleeve clamping mechanism includes a left clamping mechanism and a right clamping mechanism with the same structure; the left clamping mechanism includes a clamping sliding mechanism, a clamping cylinder, a conical main positioning pin and a limit plate. The clamping sliding mechanism is fixed on the table top of the inspection table. The clamping sliding mechanism drives the clamping cylinder to move through the left centering push rod. The conical main positioning pin is fixed on the piston rod of the clamping cylinder. The limit plate is fixed on the table top of the inspection table. The limit plate cooperates with the conical main positioning pin to clamp the sleeve on the torsion beam.

[0008] The above technical solution is further improved in that a plurality of guide brackets are distributed on the table surface of the detection table.

[0009] The above technical solution is further improved in that a plurality of limit blocks are distributed on the table surface of the detection table.

[0010] The above technical solution is further improved in that a plurality of buffers are distributed on the surface of the detection table.

[0011] Beneficial effects: The torsion beam rapid detection system has a reasonable structural design and rigorous logic. The structure of the detection table can ensure the stable and reliable centering clamping of the torsion beam. The micrometer can achieve high-precision measurement of the hub plate. The data processing is timely and efficient. The key dimensions of the torsion beam can be measured in one clamping and positioning, realizing 100% full inspection monitoring capability, providing a parameter source for traceability, and greatly improving the detection efficiency, stability and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the torsion beam structure in the background.

[0013] Figure 2 yes Figure 1 A partial enlarged view of .

[0014] Figure 3 It is a structural schematic diagram of the utility model.

[0015] Figure 4 The detection mechanism in the utility model is three-dimensional Figure 1 .

[0016] Figure 5 The detection mechanism in the utility model is three-dimensional Figure 2 .

[0017] Figure 6 It is a schematic diagram of the centering mechanism in the utility model.

[0018] Figure 7 It is a schematic diagram of the sleeve clamping mechanism in the utility model.

[0019] Figure 8 It is a schematic diagram of the tapered main positioning pin in the utility model.

[0020] Fig. 9 It is the detection point of the micrometer on the wheel hub plate.

[0021] Fig.10 The relationship diagram of trigonometric functions of toe angle is shown.

[0022] Fig.11 The trigonometric function relationship diagram of camber angle is shown. DETAILED DESCRIPTION

[0023] like Figure 3 As shown, a torsion beam rapid detection system includes a detection table 6, including a detection mechanism 7, a centering mechanism 8, and a sleeve clamping mechanism 9 provided on the detection table, the detection mechanism is used to pre-position and detect two hub plates on the torsion beam, the centering mechanism is used to correct the position of the torsion beam sleeve in the sleeve clamping mechanism, and the sleeve clamping mechanism is used to limit and clamp the sleeve on the torsion beam;

[0024] like Figure 4 and Figure 5 As shown, the structure of the detection mechanism 7: includes a left detection device and a right detection device with the same structure and symmetrically arranged; the left detection device includes a pre-support frame 701, a secondary positioning pin 702, a detection sliding mechanism 703, a profiling plate 704, a fixing frame 705, a micrometer 706 and a detection cylinder 707, the pre-support frame is fixed on the table of the detection table, the pre-support frame is used to support the longitudinal arm of the torsion beam, the secondary positioning pin is slidably connected with the pre-support frame, that is, the pre-support frame is provided with a pin hole matching the secondary positioning pin, the secondary positioning pin is used to limit the position of the hub plate on the torsion beam, the detection sliding mechanism and the detection cylinder are fixed on the table of the detection table, the profiling plate is fixed on the detection sliding mechanism through the fixing frame, the front side of the profiling plate can fit with the hole end face on the torsion beam hub plate, three micrometers are fixed on the back side of the profiling plate, the micrometer is fixed on the detection sliding mechanism through the micrometer fixing frame, and the detection sliding mechanism drives the micrometer to move through the detection cylinder; the shape of the profiling plate is the same as that of the hub plate;

[0025] The advantages of the detection mechanism are as follows: the micrometer can automatically and accurately indicate the position accuracy by detecting the cylinder; the pre-support frame is convenient for positioning and taking the workpiece, and has good stability; the overall structure is simple, easy to maintain, and has a low manufacturing cost, which ensures the detection accuracy;

[0026] like Figure 6 As shown, the structure of the centering mechanism 8 includes a guide cylinder 801, a slider 802, a left centering push rod 803 and a right centering push rod 804. The guide cylinder is fixed on the table surface of the inspection table, the slider is fixed on the piston rod of the guide cylinder, and the slider is connected to one end of the left centering push rod and the right centering push rod by an inclined sliding connection. The left centering push rod and the right centering push rod are symmetrically arranged, and the piston rod of the guide cylinder is the axis of symmetry. The left centering push rod and the right centering push rod can provide a correction force to the sleeve clamping mechanism.

[0027] The inclined plane sliding connection is further explained as follows: an inclined dovetail guide rail 805 is provided on the sliding end of the left centering push rod, a dovetail groove 806 is provided on the inclined plane on the left side of the slider, the dovetail guide rail and the dovetail groove are slidably matched, and the stroke of the left centering push rod is controlled by the inclined plane; an inclined dovetail guide rail is provided on the sliding end of the right centering push rod, a dovetail groove is provided on the inclined plane on the right side of the slider, the dovetail guide rail and the dovetail groove are slidably matched, and the stroke of the right centering push rod is controlled by the inclined plane; the dovetail type guide has a very high positioning accuracy, which can meet the needs of high-precision positioning;

[0028] The advantages of the centering mechanism are as follows: even if the workpiece is offset during detection, the main positioning point of the detection can be corrected to the center position, and the detection positioning point deviation and placement deviation caused by the positioning point deviation caused by welding deformation can be avoided; the mechanism is reasonably designed, and the sleeves on both sides of the torsion beam can be clamped synchronously, which improves the detection efficiency; the mechanism has high control accuracy, good stability, easy maintenance, low manufacturing cost, and is conducive to improving the accuracy of detection;

[0029] like Figure 7 and Figure 8 As shown, the structure of the sleeve clamping mechanism 9 includes a left clamping mechanism and a right clamping mechanism of the same structure; the left clamping mechanism includes a clamping sliding mechanism 901, a clamping cylinder 902, a conical main positioning pin 903 and a limit plate 904, the clamping sliding mechanism drives the clamping cylinder to move through the left centering push rod, the conical main positioning pin is fixed on the piston rod of the clamping cylinder, the limit plate is fixed on the table of the test table, and the limit plate cooperates with the conical main positioning pin to clamp the sleeve on the torsion beam;

[0030] The advantages of the sleeve clamping mechanism are: high control accuracy, good stability, easy maintenance, and low manufacturing cost; the use of the conical surface can make the sleeve of the torsion beam consistent with the axis of the conical main positioning pin, which is conducive to improving the detection efficiency and accuracy;

[0031] The detection sliding mechanism and the pressing sliding mechanism have the same structure, and are composed of a guide rail and a slide seat, the guide rail is dovetail-shaped, and the slide seat has a dovetail-shaped slide groove;

[0032] Further explanation of the correction force: the pushing end of the left centering push rod is fixedly connected to the slide seat of the detection sliding mechanism in the left clamping mechanism; the pushing end of the right centering push rod is fixedly connected to the slide seat of the detection sliding mechanism in the right clamping mechanism;

[0033] like Figure 7 and Figure 8 As shown, a plurality of guide brackets 10 are distributed on the table surface of the test table, and the guide brackets are convenient for quickly placing the torsion beam, and the guide brackets can guide the crossbeam, longitudinal arm and sleeve of the torsion beam;

[0034] A plurality of limit blocks 11 are distributed on the surface of the detection table, and a rubber pad is provided on the limit surface of the limit block; the slide seat in the detection sliding mechanism and the pressing sliding mechanism is a moving part, and in order to limit the travel of the slide seat, a plurality of limit blocks are evenly distributed on the movement track of the slide seat;

[0035] like Figure 7 As shown, a plurality of buffers 12 are distributed on the surface of the detection table, and the buffers are rubber blocks or buffer pins; the slide seats in the detection sliding mechanism and the pressing sliding mechanism are moving parts. In order to ensure the detection accuracy and extend the service life, the use of buffers can avoid the impact caused by collision;

[0036] The cylinders in the detection mechanism, centering mechanism, and sleeve clamping mechanism are used as power to reduce the labor intensity of personnel operation and improve measurement efficiency; the slide rail guide is used to ensure high repeatability and reliability, and when measuring, buttons can be used to achieve one-click positioning and clamping, one-click measurement, and one-click opening.

[0037] like Figure 7 As shown, the working principle of the utility model is:

[0038] 1) Before testing, install the zeroing plate, start the testing cylinder, move the testing end of the dial gauge to the set position, calibrate the dial gauge through the zeroing plate and record the starting data of the dial gauge. The display screen will show zeroing OK or NG. After zeroing is completed, remove the zeroing plate and put it back. The zeroing is relative to the zero position and does not have to be adjusted to zero.

[0039] 2) When placing the workpiece (torsion beam), it is easier to place it in place under the action of the guide bracket. After loosening, the longitudinal arm of the torsion beam is positioned on the pre-support frame, and the auxiliary positioning pin is inserted into the hole on the hub plate to limit the Z direction of the hub plate. The button is operated to start the centering mechanism;

[0040] 3) The slider in the centering mechanism, under the action of the guide cylinder, pushes the left and right centering push rods through the inclined surface. The left and right centering push rods push the corresponding slide seats in the clamping sliding mechanism respectively, so that the slide seats are in place. The end surface of the slide seat in contact with the workpiece pushes the workpiece, forcing the left and right sleeves on the workpiece to be placed in the center, and they will not deviate under the action of the limit block; under the action of the clamping cylinder, the conical main positioning expansion pin is inserted into the sleeve, and the workpiece is positioned and clamped in place;

[0041] 4) Scan the barcode of the workpiece with a barcode scanner or input the coding information manually, press the button again to start measuring; the dial gauge moves to the set position through the detection cylinder, so that the detection end of the dial gauge contacts the hub plate of the torsion beam; the dial gauge is fixed in the same plane, and the hub plate is inclined relative to the dial gauge after the torsion beam is clamped. Therefore, the values ​​displayed by the dial gauges at the three points in the detection state are different; Fig. 9 As shown, the three points are defined as: LB1, LB2 and LB3. The measured length is converted into angle using trigonometric function relationship. The data collected by the micrometer is input to PLC and industrial computer through analog data converter and hub. After being processed by measurement software, the current torsion beam toe angle, camber angle and wheel center distance are output in real time. The qualified or unqualified judgment is made and OK / NG is displayed with color light prompt. The collected raw data and results are bound and stored with traceability code, which can be used for statistical analysis and call-up query. According to the contour and size of the hub plate, the number of micrometers can be adjusted arbitrarily;

[0042] The toe angle and camber angle of the torsion beam are converted into angles by using trigonometric functions; Fig.10 As shown in the diagram of the trigonometric function relationship of the toe angle, the toe angle = arctan {(LB2- LB1) / L}; Fig.11 The trigonometric function relationship diagram of camber angle shown in the figure shows that camber angle = arctan {(LB3- LB1) / H}.

[0043] The above description of the utility model is exemplified in combination with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A torsion beam rapid detection system, comprising a detection platform, characterized in that: The detection table includes a detection mechanism, a centering mechanism, and a sleeve clamping mechanism, the detection mechanism is used to pre-position and detect the two hub plates on the torsion beam, the centering mechanism is used to correct the position of the torsion beam sleeve in the sleeve clamping mechanism, and the sleeve clamping mechanism is used to limit and clamp the sleeve on the torsion beam; the structure of the detection mechanism: includes a left detection device and a right detection device with the same structure; the left detection device includes a pre-support frame, a secondary positioning pin, a detection sliding mechanism, a profiling plate, a micrometer, a fixing frame and a detection cylinder, the pre-support frame is fixed on the table of the detection table, the pre- The support frame is used to support the longitudinal arm of the torsion beam. The auxiliary positioning pin is slidably connected to the pre-support frame, that is, the pre-support frame is provided with a pin hole matching the auxiliary positioning pin. The auxiliary positioning pin is used to limit the position of the hub plate on the torsion beam. The detection sliding mechanism and the detection cylinder are fixed on the table top of the detection table. The profiling plate is fixed to the detection sliding mechanism through a fixing frame. The front side of the profiling plate can fit with the end face of the hole on the hub plate of the torsion beam. Multiple micrometers are fixed on the back side of the profiling plate. The micrometers are fixed to the detection sliding mechanism through a micrometer fixing frame. The detection sliding mechanism drives the micrometer to move through the detection cylinder.

2. A torsion beam rapid detection system according to claim 1, characterized in that: The structure of the centering mechanism includes a guide cylinder, a slider, a left centering push rod and a right centering push rod. The guide cylinder is fixed on the table top of the inspection table, the slider is fixed on the piston rod of the guide cylinder, the slider is connected to one end of the left centering push rod and the right centering push rod by an inclined sliding connection, the left centering push rod and the right centering push rod are symmetrically arranged, and the left centering push rod and the right centering push rod can provide correction force to the sleeve clamping mechanism.

3. A torsion beam rapid detection system according to claim 1 or 2, characterized in that: The structure of the sleeve clamping mechanism includes a left clamping mechanism and a right clamping mechanism with the same structure; the left clamping mechanism includes a clamping sliding mechanism, a clamping cylinder, a conical main positioning pin and a limit plate, the clamping sliding mechanism is fixed on the table top of the inspection table, the clamping sliding mechanism drives the clamping cylinder to move through the left centering push rod, the conical main positioning pin is fixed on the piston rod of the clamping cylinder, the limit plate is fixed on the table top of the inspection table, and the limit plate cooperates with the conical main positioning pin to clamp the sleeve on the torsion beam.

4. A torsion beam rapid detection system according to claim 3, characterized in that: A plurality of guide brackets are distributed on the table surface of the detection table.

5. A torsion beam rapid detection system according to claim 1, 2 or 4, characterized in that: A plurality of limit blocks are distributed on the table surface of the detection table.

6. A torsion beam rapid detection system according to claim 5, characterized in that: A plurality of buffers are distributed on the surface of the detection platform.

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