Torsion box measuring system

Abstract

The utility model relates to the technical field of new energy automobile part detection, in particular to a torsion box measuring system which comprises a rack and a workbench arranged on the rack, the workbench is provided with a positioning assembly, a pressing assembly and a sliding mechanism used for measuring deformation of a workpiece shell, and the sliding mechanism is arranged on the workbench in a sliding mode. The sliding mechanism is provided with a plurality of detection sites used for being matched with a to-be-detected face of a workpiece, each detection site is provided with a displacement sensor, the displacement sensors are electrically connected with a controller and a display screen, and the controller receives signals of the displacement sensors and sends shell deformation to the display screen. According to the utility model, weak sites or contour surfaces in the torsion box shell can be measured before machining, so that an operator can carry out online shape correction on a workpiece according to a measurement result, the product quality can be improved, subsequent unqualified products can be reduced, the subsequent detection time can be saved, and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile parts detection technical field, concretely is torsion box measurement system. BACKGROUND

[0002] In the development of new energy vehicles, torsion box as a key component, can effectively transmit and distribute power, ensure the stability and maneuverability of the vehicle in the driving process, plays a vital role in the performance and safety of the vehicle, therefore, the torsion box needs to be detected for several times after production is completed to ensure the quality of the product.

[0003] At present, after the torsion box shell is pressure cast, the obtained blank is first detected by 3D scanning, then the blank is machined, and after the machining is completed, the detection surface profile and hole position of the workpiece are detected by using a comprehensive gauge, if the detection finds unqualified products, the workpiece is reworked and calibrated, and then the comprehensive gauge is used for detection again. However, the above detection method still has the following technical problems in actual use:

[0004] 1. If unqualified products occur, the workpiece needs to be repeatedly calibrated and detected to obtain qualified products, which increases the subsequent debugging and detection steps and time, and reduces the production efficiency.

[0005] 2. The product quality is difficult to guarantee: the existing method is to detect and calibrate after machining is completed, if the deformation problem in the early stage is not effectively controlled, the deformation problem will gradually accumulate in the subsequent machining process, which finally leads to uneven product quality, and it is difficult to meet the increasingly stringent market demand.

[0006] Based on this, the inventors of our company have developed a torsion box measurement system, which can measure the relatively weak points or profile surfaces in the torsion box shell before machining, so that the operator can calibrate the workpiece online according to the measurement results, which is beneficial to improve the quality of the product, reduce the generation of subsequent unqualified products, and thus reduce the repeated calibration and testing operations of subsequent unqualified products, which is beneficial to save time and improve production efficiency. CONTENT OF THE UTILITY MODEL

[0007] The utility model provides torsion box measurement system, can measure the relatively weak points or profile surfaces in the torsion box shell before machining, so that the operator can calibrate the workpiece online according to the measurement results, which is beneficial to improve the quality of the product, reduce the generation of subsequent unqualified products, save subsequent detection time, and improve production efficiency.

[0008] The present application provides the following technical solutions:

[0009] The torsion box measuring system comprises a rack and a workbench arranged on the rack, the workbench is provided with a positioning assembly, a pressing assembly and a sliding mechanism for measuring the deformation of the workpiece shell, the sliding mechanism is slidingly arranged on the workbench, a plurality of detection sites for cooperating with the measured surface of the workpiece are arranged on the sliding mechanism, a displacement sensor is arranged on each detection site, the displacement sensor is electrically connected with a controller and a display screen, the controller receives the signal of the displacement sensor and sends the shell deformation to the display screen.

[0010] Technical principle: after the torsion box shell is pressure die formed, the torsion box measuring system of the application is used to measure the profile surface which is relatively weak or easy to deform in the shell; in use, the workpiece is first positioned by the positioning assembly, and then the workpiece is fixed by the pressing assembly; then the sliding mechanism is pushed to move close to the workpiece, the displacement sensor arranged on the detection site contacts the surface of the workpiece and deforms according to the profile surface, at this time, the displacement of the displacement sensor is the offset deformation value of the profile surface of the workpiece, the controller sends the received signal to the display screen for the operator to intuitively view; if the offset value on the display screen does not meet the requirements, the operator adjusts the profile of the workpiece online according to the offset value on the display screen until the offset value meets the requirements, thereby completing the measurement and profile adjustment of the torsion box, and after completion, the shell is sent to subsequent machining processing.

[0011] Advantages:

[0012] 1. The torsion box measuring system of the scheme is designed for torsion box shell pressure casting, and the workpiece is measured before machining after pressure die forming, if the offset deformation value of the shell exceeds the requirements, the shell is adjusted online to improve the product quality.

[0013] 2. Since the workpiece is adjusted in advance, the deformation accumulation in the subsequent processing process is reduced, the unqualified products are reduced, and the repeated profile adjustment and detection operation of the product due to the appearance of unqualified products is beneficial to save the subsequent detection time and improve the production efficiency.

[0014] Further, the sliding mechanism comprises a sliding rail and a connecting plate slidingly arranged on the sliding rail, a plurality of mounting supports are arranged on the connecting plate, the displacement sensor is arranged on the mounting support, and the arrangement positions of the plurality of mounting supports correspond to the measured shell surface of the standard workpiece.

[0015] Advantages: by arranging the positions of the mounting supports, the weak points at different positions of the workpiece can be detected, and when the connecting plate is pushed to slide into position, multiple sites can be detected at one time.

[0016] Further, the sliding mechanism is provided with a detection limiting block on one side close to the positioning assembly and a anti-dropping limiting block on the other side away from the positioning assembly, and the connecting plate is slidingly positioned between the detection limiting block and the anti-dropping limiting block.

[0017] Beneficial effects: By setting the detection limiting block, when measurement is needed, the connecting plate is directly pushed to the detection limiting block for quick positioning; when the workpiece is needed to be installed or removed, the connecting plate is moved to the side of the anti-dropping limiting block to avoid interference of the connecting plate on the disassembly of the workpiece, which is beneficial to the disassembly efficiency.

[0018] Further, the connecting plate is provided with a sliding positioning pin, and the workbench is provided with a bolt hole for inserting the sliding positioning pin, and when the connecting plate abuts against the detection limiting block, the sliding positioning pin is used to be inserted into the bolt hole.

[0019] Beneficial effects: The sliding positioning pin is inserted into the bolt hole on the workbench during detection to fix the connecting plate, so that it is stably kept on the detection station, avoiding movement of the connecting plate during detection and causing inaccurate detection results.

[0020] Further, the fixed measurement mechanism is provided on the workbench, the top of the fixed measurement mechanism is provided with a plurality of detection points, each detection point is provided with a displacement sensor through a mounting support, and the displacement sensor is electrically connected with the controller.

[0021] Beneficial effects: The fixed measurement mechanism is used to measure a plurality of weak parts of another part of the workpiece.

[0022] Further, the positioning assembly is provided at least in two groups and located at the sliding mechanism and the fixed measurement mechanism, respectively, and the positioning assembly comprises a spring positioning pin and a positioning plate, the spring positioning pin is used to cooperate with the mounting hole on the workpiece, and the positioning plate is used to limit the outer surface of the workpiece.

[0023] Beneficial effects: The spring positioning pin can realize quick plugging and positioning, greatly shorten the operation time, and is beneficial to improve the installation efficiency of the workpiece.

[0024] Further, the pressing assembly comprises a supporting seat and a pressing cylinder, the supporting seat is provided with a gas tightness detection hole, and the gas tightness detection hole is connected with a gas tightness detection assembly; when the workpiece is placed on the supporting seat, the surface of the workpiece is used to block the gas tightness detection hole on the supporting seat.

[0025] Beneficial effects: By setting the gas tightness detection hole on the supporting seat, when the workpiece is placed in place, the gas tightness detection hole is sealed, at this time, the accuracy of the placement position of the workpiece can be further detected, so as to ensure the accuracy of subsequent measurement and reduce the error caused by inaccurate placement.

[0026] Further, the pressing cylinder is arranged on the workbench through the cylinder seat, and the power output end of the pressing cylinder is provided with a pressing plate, which is used for pressing the workpiece on the supporting seat.

[0027] Beneficial effects: the pressing cylinder is used for fixing and pressing the workpiece with correct placement position, avoiding displacement of the workpiece during the measurement process.

[0028] Further, the display screen is arranged above the workbench through the support, and the lower portion of the workbench is further provided with an electric control box, and the controller is arranged in the electric control box.

[0029] Beneficial effects: the display screen is arranged above the workbench, which is convenient for the operator to check the values on the display screen.

[0030] Further, the scanning code gun is further included, and the scanning code gun is electrically connected with the controller, and the scanning code gun is used for scanning the information on the product identification area of the workpiece.

[0031] Beneficial effects: the scanning code gun is used for inputting the information of the workpiece before detection, avoiding repeated detection. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the torque box measurement system of the utility model;

[0033] Figure 2 It is a structural schematic view of the torque box measurement system of the utility model; Figure 1 It is a structural schematic view of the torque box measurement system of the utility model;

[0034] Figure 3 It is a structural schematic view of the torque box measurement system of the utility model; Figure 1 It is an enlarged schematic view of the workbench of the torque box measurement system of the utility model;

[0035] Figure 4 It is an enlarged schematic view of the workbench of the torque box measurement system of the utility model; Figure 3 It is a schematic view of another direction of the workbench of the torque box measurement system of the utility model. DETAILED DESCRIPTION

[0036] The following will be further described in detail through specific embodiments:

[0037] The marks in the drawings of the specification include: rack 1, workbench 11, support 12, display screen 121, electric control box 13, positioning assembly 2, spring positioning pin 21, positioning plate 22, pressing assembly 3, supporting seat 31, air-tightness detection hole 311, pressing cylinder 32, cylinder seat 321, pressing plate 33, sliding mechanism 4, sliding rail 41, connecting plate 42, mounting support 43, detection limiting block 44, anti-dropping limiting block 45, sliding positioning pin 46, handle 47, fixed measurement mechanism 5, supporting frame 51, workpiece 100, displacement sensor 400.

[0038] Embodiment one

[0039] As Figures 1-2As shown, the torsion box measuring system comprises a rack 1 and a workbench 11 arranged on the rack 1, and the workbench 11 is provided with a positioning assembly 2, a pressing assembly 3 and a sliding mechanism 4 for measuring the shell deformation of the workpiece 100, the sliding mechanism 4 is slidingly arranged on the workbench 11, and the sliding mechanism 4 is provided with a plurality of detection sites for cooperating with the surface to be measured of the workpiece 100, and a displacement sensor 400 is arranged on each detection site, the displacement sensor 400 is electrically connected with a controller and a display screen 121, the controller receives the signal of the displacement sensor 400 and sends the shell deformation to the display screen 121. Specifically, in the embodiment, the display screen 121 is arranged above the side of the workbench 11 through a support 12, and an electric control box 13 is further arranged below the workbench 11, and the controller is arranged in the electric control box 13.

[0040] As shown in the figure, Figure 3 The sliding mechanism 4 comprises a sliding rail 41 and a connecting plate 42 slidingly arranged on the sliding rail 41, and specifically, the sliding rail 41 is two groups, the sliding rail 41 is provided with a sliding block, and the connecting plate 42 is a square structure and is fixed on the sliding block through bolts. A plurality of mounting seats 43 are arranged on the connecting plate 42, and the displacement sensor 400 is arranged on the mounting seat 43, and the arrangement positions of the plurality of mounting seats 43 correspond to the surface to be measured of the workpiece 100. In the embodiment, six groups of mounting seats 43 are arranged, and the mounting seats 43 are fixed on the connecting plate 42 through bolts; a handle 47 is further arranged on the connecting plate 42, which facilitates sliding the connecting plate 42 on the sliding rail 41 by the handle 47.

[0041] The side of the sliding mechanism 4 close to the positioning assembly 2 is provided with a detection limiting block 44, and the side away from the positioning assembly 2 is provided with an anti-dropping limiting block 45, and the connecting plate 42 is slidingly located between the detection limiting block 44 and the anti-dropping limiting block 45. As shown in the figure, Figure 4 In the embodiment, the detection limiting block 44 is an L-shaped structure, the horizontal end of which is fixed on the workbench 11 through bolts, and the vertical end is used for limiting the connecting plate 42; the anti-dropping limiting block 45 is a T-shaped structure, the horizontal end of the T-shaped structure is fixed on the workbench 11 through bolts, and the vertical end is used for limiting the connecting plate 42. When measuring is needed, the connecting plate 42 is directly pushed to the detection limiting block 44, and rapid positioning can be realized; when the workpiece 100 needs to be installed or removed, the connecting plate 42 is moved to the side of the anti-dropping limiting block 45, and the disassembly is given space, so as to avoid the interference of the connecting plate 42 to the disassembly of the workpiece 100.

[0042] The connecting plate 42 is provided with a sliding positioning pin 46, and the workbench 11 is provided with a pin hole (not shown in the figure) for inserting the sliding positioning pin 46. When the connecting plate 42 abuts against the detection limiting block 44, the sliding positioning pin 46 is used to be inserted into the pin hole. In the embodiment, the sliding positioning pin 46 is arranged on the side of the connecting plate 42 close to the anti-disengagement limiting block 45, which is convenient for operation. Specifically, when detecting, the sliding positioning pin 46 is inserted into the pin hole on the workbench 11, the connecting plate 42 can be fixed, so that it is stably kept on the detection station, and movement of the connecting plate 42 during detection is avoided, so that the detection result is not accurate.

[0043] As shown in Figure 3 , the embodiment further includes a fixed measurement mechanism 5 arranged on the workbench 11. The top of the fixed measurement mechanism 5 is provided with a plurality of detection points. Each detection point is provided with a displacement sensor 400 through a mounting support 43. The displacement sensor 400 is electrically connected with the controller. Specifically, as shown in Figure 4 , the fixed measurement mechanism 5 includes a support frame 51. The mounting support 43 is fixed on the support frame 51 by bolts. The mounting support 43 is located outside the displacement sensor 400, which can protect the sensor to a certain extent. In the embodiment, the support frame 51 is provided with six groups of displacement sensors 400. Each displacement sensor 400 is electrically connected with the controller. More preferably, in order to facilitate distinction, the mounting supports 43 can be numbered. Each number corresponds to a displacement sensor 400.

[0044] The positioning assembly 2 is arranged at least in two groups and located at the sliding mechanism 4 and the fixed measurement mechanism 5. The positioning assembly 2 includes a spring positioning pin 21 and a positioning plate 22. The spring positioning pin 21 is used to cooperate with the mounting hole on the workpiece 100. The positioning plate 22 is used to limit the outer surface of the workpiece 100. Specifically, in the embodiment, the positioning plate 22 can be a plastic positioning plate 22, which can protect the workpiece 100 to a certain extent and avoid problems such as friction and scratching of the surface of the workpiece 100.

[0045] The pressing assembly 3 comprises a support seat 31 and a pressing cylinder 32. The support seat 31 is provided with a gas tightness detection hole 311 connected with a gas tightness detection assembly (not shown in the figure). When the workpiece 100 is placed on the support seat 31, the surface of the workpiece 100 is used to block the gas tightness detection hole 311 on the support seat 31. Specifically, the gas tightness detection assembly can adopt the existing vacuum detection method, and the vacuum pump is used to extract the air in the gas tightness detection hole 311 to judge the gas tightness. In other embodiments other than the present embodiment, other methods for detecting gas tightness can also be used. By providing the gas tightness detection hole 311, when the workpiece 100 is placed in place, the gas tightness detection hole 311 is sealed. If it is not placed accurately, the sealing performance is poor, so that it can be used for further detection of whether the placement position of the workpiece 100 is accurate, which is beneficial to ensure the accuracy of subsequent measurement and reduce the error caused by inaccurate position placement.

[0046] The pressing cylinder 32 is arranged on the workbench 11 through a cylinder seat 321. Specifically, the cylinder seat 321 is fixed vertically on the workbench 11 through bolts. The power output end of the pressing cylinder 32 is provided with a pressing plate 33 for pressing the workpiece 100 on the support seat 31. In the present embodiment, three groups of pressing cylinders 32 are arranged on one side of the sliding mechanism 4, one side of the fixed measurement mechanism 5, and between the sliding mechanism 4 and the fixed measurement mechanism 5. The pressing cylinder 32 is used to fix and press the workpiece 100 with correct placement position, so as to avoid displacement of the workpiece 100 during measurement.

[0047] After the torsion box shell is pressure die formed, the torsion box measurement system of the present application is used to measure the relatively weak or easily deformed profile surface in the shell. In use, the positioning assembly 2 is used to position the workpiece 100 first, and then the pressing assembly 3 is used to fix the workpiece 100. When the workpiece 100 is placed in place, the displacement sensor 400 on the fixed measurement mechanism 5 can directly measure the to-be-measured position and feed back the measurement result to the display screen 121.

[0048] Then, the sliding mechanism 4 is pushed to move to the detection limit block 44, and the sliding positioning pin 46 is used to fix the connecting plate 42. At this time, the displacement sensor 400 arranged on the detection position contacts the surface of the workpiece 100 and deforms by different degrees according to the profile surface. The displacement amount of the displacement sensor 400 is the offset deformation value of the profile surface of the workpiece 100. The controller sends the received signal to the display screen 121 for intuitive viewing by the operator.

[0049] If the offset value displayed on the display screen 121 is too large, it does not meet the requirements. At this time, the operator performs on-line profile correction on the workpiece 100 according to the offset value on the display screen 121 until the offset value meets the requirements, so as to complete the measurement and profile correction of the torsion box. After completion, the shell is sent to subsequent machining treatment.

[0050] Embodiment two

[0051] The difference between this embodiment and embodiment one is that a code scanning gun (not shown in the figure) is further included, the code scanning gun is electrically connected with the controller, and the code scanning gun is used for scanning information on a product identification area on the workpiece 100; in use, the information of the workpiece 100 is input through the code scanning gun before detection, so that repeated detection is avoided.

[0052] The above is only an embodiment of the utility model, and the utility model is not limited to the field involved in this embodiment, and common knowledge such as specific structures and properties in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which should also be considered as the protection scope of the utility model, and these will not affect the implementation effect and the practicability of the patent. The protection scope required by the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A torsion box measurement system characterized by, The device comprises a rack and a workbench arranged on the rack, the workbench is provided with a positioning assembly, a pressing assembly and a sliding mechanism for measuring the deformation of a workpiece shell, the sliding mechanism is slidingly arranged on the workbench, the sliding mechanism is provided with a plurality of detection sites for cooperating with the surface of the workpiece to be measured, each detection site is provided with a displacement sensor, the displacement sensor is electrically connected with a controller and a display screen, the controller receives the signal of the displacement sensor and sends the shell deformation to the display screen.

2. The torsion box measurement system of claim 1, wherein: The sliding mechanism comprises a sliding rail and a connecting plate slidingly arranged on the sliding rail, the connecting plate is provided with a plurality of mounting supports, the displacement sensor is arranged on the mounting support, and the arrangement position of the plurality of mounting supports corresponds to the surface of the standard workpiece to be measured.

3. The torsion box measurement system of claim 2, wherein: The side of the sliding mechanism close to the positioning assembly is provided with a detection limiting block, and the side away from the positioning assembly is provided with an anti-dropping limiting block, and the connecting plate is slidingly located between the detection limiting block and the anti-dropping limiting block.

4. The torsion box measurement system of claim 3, wherein: The connecting plate is provided with a sliding positioning pin, and the workbench is provided with a bolt hole for inserting the sliding positioning pin, when the connecting plate abuts against the detection limiting block, the sliding positioning pin is used for inserting into the bolt hole.

5. The torsion box measurement system of claim 4, wherein: The device further comprises a fixed measuring mechanism arranged on the workbench, the top of the fixed measuring mechanism is provided with a plurality of detection sites, each detection site is provided with a displacement sensor through a mounting support, and the displacement sensor is electrically connected with the controller.

6. The torsion box measurement system of claim 5, wherein: The positioning assembly is provided with at least two groups, which are respectively located at the sliding mechanism and the fixed measuring mechanism, the positioning assembly comprises a spring positioning pin and a positioning plate, the spring positioning pin is used for cooperating with the mounting hole on the workpiece, and the positioning plate is used for limiting the outer surface of the workpiece.

7. The torsion box measurement system of any of claims 1-6, wherein: The pressing assembly comprises a supporting seat and a pressing cylinder, the supporting seat is provided with a gas tightness detection hole, and the gas tightness detection hole is connected with a gas tightness detection assembly; when the workpiece is placed on the supporting seat, the surface of the workpiece is used for blocking the gas tightness detection hole on the supporting seat.

8. The torsion box measurement system of claim 7, wherein: The pressing cylinder is arranged on the workbench through a cylinder seat, the power output end of the pressing cylinder is provided with a pressing plate, and the pressing plate is used for pressing the workpiece on the supporting seat.

9. The torsion box measurement system of claim 8, wherein: The display screen is arranged above the workbench through a support, and an electric control box is further arranged below the workbench, and the controller is arranged in the electric control box.

10. The torsion box measurement system of claim 9, wherein: The device further comprises a code scanning gun, the code scanning gun is electrically connected with the controller, and the code scanning gun is used for scanning the information on the product identification area of the workpiece.

Images