Calibration tool for tire bolt tightening machine

Abstract

The utility model belongs to the field of automobile assembly tools, and particularly relates to a tire bolt tightening machine calibration tool which comprises a clamping and fixing assembly, a supporting arm, a torque sensor and a transmission part. The supporting arm comprises a vertical part connected with the clamping and fixing assembly and a cantilever part connected with the vertical part, a calibration bolt is arranged on the cantilever part, and a calibration nut is in threaded connection with the calibration bolt; the torque sensor is installed on a rotating shaft of the tightening machine, and a torsion shaft of the torque sensor is coaxial with the calibration bolt. The clamping and fixing assembly is used for fixing the calibration tool on an external carrier and preventing the calibration tool from rotating in the calibration process of the tightening machine, the rotating shaft drives a torsion shaft of the torque sensor and the calibration nut to rotate during operation, so that the tightness degree of the calibration bolt and the calibration nut is controlled, and the torque is a calibration value when the tightness degree meets the requirement. And torque calibration is carried out on all the rotating shafts in sequence. The convenience is high, the problem that the locking bolt of the axle tire slips in the calibration process is also avoided, and the safety is also improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automobile assembly tools, and particularly relates to a tire bolt tightening machine calibration tool. BACKGROUND

[0002] The passenger car tire bolt tightening machine is an automatic device for tightening the tire nut in the automobile manufacturing process. Figure 1 As shown in the figure, the tire bolt tightening machine mainly comprises a main machine 1-1, five or six rotating shafts 1-3, a guide sleeve 1-2 for stabilizing the rotating shaft, a tightening head 1-4 arranged on the rotating shaft 1-3 and replaceable, and the guide sleeve 1-2 is in rotary cooperation with the rotating shaft 1-3. It has the advantages of automation, high efficiency, high precision, etc., and can effectively improve the efficiency and quality of automobile assembly. Compared with the traditional manual tightening method, the passenger car tire tightening machine can control the tightening torque and angle through programming to ensure the precision and quality of tightening and avoid errors and mistakes that may occur in manual operation.

[0003] The passenger car tire tightening machine device adopts a real vehicle axle for torque calibration, which is inconvenient. As an important part of the vehicle chassis, the axle is used as a torque calibration tool for the tire tightening machine device, and the tire locking bolt is prone to slip during operation, which may cause insufficient tire locking torque and affect the safety performance of the whole vehicle. CONTENT OF THE INVENTION

[0004] The technical problem to be solved by the present application is to provide a tire bolt tightening machine calibration tool with high convenience and safety.

[0005] The present application provides a tire bolt tightening machine calibration tool, comprising:

[0006] a clamping and fixing assembly;

[0007] a support arm comprising an upright part connected with the clamping and fixing assembly and a cantilever part connected with the upright part, a calibration bolt being arranged on the cantilever part, and a calibration nut being screwed on the calibration bolt;

[0008] a torque sensor, two ends of a torsion shaft of the torque sensor being respectively drivingly connected with a connecting head one and a connecting head two, the connecting head one being used for connecting the rotating shaft of the tightening machine, and the torsion shaft of the torque sensor being coaxial with the calibration bolt;

[0009] a transmission member, two ends of the transmission member being respectively connected with the calibration nut and the connecting head two.

[0010] Optionally, the clamping and fixing assembly comprises a clamping plate one, a clamping plate two and a fastener, the cooperation surfaces of the clamping plate one and the clamping plate two are each provided with at least two clamping grooves for clamping at least two guide sleeves, and the clamping plate one and the clamping plate two are connected through the fastener.

[0011] Optionally, the fastener comprises a fastening bolt and a fastening nut.

[0012] Optionally, the inner surface of the clamping groove is arc-shaped or V-shaped.

[0013] Optionally, the vertical part is fixedly connected with the clamping plate.

[0014] Optionally, the bottom end of the vertical part is connected with the end of the clamping plate by screws or welding.

[0015] Optionally, the vertical part is integrally formed with the cantilever part and forms an L-shaped structure.

[0016] Optionally, a counterbore is formed on the cantilever part, the counterbore comprises a hexagonal hole and a round hole, and the calibration bolt is arranged in the counterbore.

[0017] Optionally, the transmission member is a tightening head or an internal hexagonal sleeve, and the two ends of the transmission member are respectively connected with the calibration nut and the connecting head through concave-convex structures.

[0018] Optionally, the torque sensor is electrically connected with an industrial control display screen.

[0019] The beneficial effects of the present application are that the clamping and fixing assembly is used to fix the calibration tool on an external carrier to prevent the calibration tool from rotating during the calibration of the tightening machine, the torque sensor is installed on the rotating shaft of the tightening machine, and the torque shaft of the torque sensor and the calibration nut are rotated when the rotating shaft is running, so as to control the tightness of the calibration bolt and the calibration nut. When the tightness meets the requirements, the torque is the calibration value, and the torque of all rotating shafts is calibrated in turn. In actual use, when the tightening machine is working, the torque reaches the calibration value to stop working, which indicates that the tire bolt is fastened in place. Through the calibration tool, torque calibration is not required on the actual vehicle axle, which is more convenient, avoids the problem of slipping of the tire locking bolt during calibration, and improves safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a use state diagram of the tire bolt tightening machine calibration tool of the present application;

[0021] Figure 2 is a structural schematic diagram of the tire bolt tightening machine calibration tool of the present application;

[0022] Figure 3 is an exploded structural schematic diagram of the tire bolt tightening machine calibration tool of the present application.

[0023] In the diagram: 1-1, Main unit; 1-2, Guide sleeve; 1-3, Rotating shaft; 1-4, Tightening head; 100, Clamping and fixing assembly; 110, Clamping plate one; 120, Clamping plate two; 130, Fastener; 131, Fastening bolt; 132, Fastening nut; 140, Clamping groove; 200, Support arm; 210, Vertical part; 220, Cantilever part; 221, Countersunk hole; 230, Calibration bolt; 240, Calibration nut; 300, Torque sensor; 310, Connector one; 320, Connector two; 400, Transmission component; 500, Industrial control display screen. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] like Figures 1-3 As shown, this application provides a calibration fixture for a tire bolt tightening machine, comprising: a clamping and fixing assembly 100, a support arm 200, a torque sensor 300, and a transmission component 400; wherein, the support arm 200 includes an upright portion 210 connected to the clamping and fixing assembly 100 and a cantilever portion 220 connected to the upright portion 210, a calibration bolt 230 is provided on the cantilever portion 220, and a calibration nut 240 is screwed onto the calibration bolt 230; the torque shaft of the torque sensor 300 is connected to a first connector 310 and a second connector 320 at both ends, the first connector 310 being used to connect to the rotating shaft 1-3 of the tightening machine, and the torque shaft of the torque sensor 300 being coaxial with the calibration bolt 230; the two ends of the transmission component 400 are connected to the calibration nut 240 and the second connector 320 respectively.

[0026] Compared with existing technologies, the calibration fixture provided in this application uses a clamping and fixing component 100 to fix the calibration fixture to an external carrier, preventing the fixture from rotating during the calibration process of the tightening machine. A torque sensor 300 is installed on the rotating shaft 1-3 of the tightening machine. When the rotating shaft 1-3 rotates, it drives the torque shaft of the torque sensor 300 and the calibration nut 240 to rotate, thereby controlling the tightness of the calibration bolt 230 and the calibration nut 240. The torque at which the tightness meets the requirements is the calibration value. Torque calibration is performed on all rotating shafts 1-3 sequentially. In actual use, when the tightening machine is working, it stops working when the torque reaches the calibration value, indicating that the tire bolts are properly tightened. This calibration fixture eliminates the need for direct torque calibration on the actual vehicle axle, offering greater convenience and avoiding the problem of stripped threads on the axle tire locking bolts during calibration, thus improving safety.

[0027] It should be noted that the holding assembly 100 can also be fixed on the host 1-1 or other fixed carriers. When in use, the torque sensor 300 can be held by hand to stabilize it.

[0028] In one embodiment, the holding assembly 100 includes a first clamping plate 110, a second clamping plate 120, and a fastener 130. The mating surfaces of the first clamping plate 110 and the second clamping plate 120 are each provided with at least two clamping grooves 140 for clamping at least two guide sleeves 1-2. The first clamping plate 110 and the second clamping plate 120 are connected by the fastener 130. Specifically, the first clamping plate 110 and the second clamping plate 120 are in the shape of a square column and can be arranged in the gaps of the plurality of rotating shafts 1-3. The clamping grooves 140 on the first clamping plate 110 and the second clamping plate 120 cooperate to form a limiting area surrounding the two guide sleeves 1-2. During the fastening of the first clamping plate 110 and the second clamping plate 120 by the fastener 130, the holding assembly 100 is fixed on the two guide sleeves 1-2, ensuring that the calibration tool has sufficient stability, is easy to install and disassemble, and has a small volume.

[0029] In one embodiment, the fastener 130 includes a fastening bolt 131 and a fastening nut 132. Specifically, the first clamping plate 110 and the second clamping plate 120 are each provided with two bolt holes, and two fastening bolts 131 are respectively arranged in the two bolt holes. The fastening nut 132 is screwed with the fastening bolt 131 to gradually approach the first clamping plate 110 and the second clamping plate 120 and clamp and fix them on the guide sleeves 1-2. In some embodiments, the first clamping plate 110 and the second clamping plate 120 are each provided with 3 or more bolt holes, and 3 or more fastening bolts 131 are respectively arranged in the 3 or more bolt holes. The purpose is to ensure that the holding assembly 100 is firmly fixed on the guide sleeves 1-2, thereby ensuring the stability of the calibration tool.

[0030] In one embodiment, the inner surface of the clamping groove 140 is an arc surface or a V-shaped surface. In this way, the guide sleeves 1-2 can be clamped more stably.

[0031] In one embodiment, the vertical part 210 is fixedly connected with the first clamping plate 110. It can be understood that the vertical part 210 and the first clamping plate 110 are an integral whole, and the second clamping plate 120 is a separate component. Specifically, the bottom end of the vertical part 210 is connected with the end of the first clamping plate 110 by a screw or welding.

[0032] In one embodiment, the vertical part 210 and the cantilever part 220 are integrally formed and constitute an L-shaped structure.

[0033] In one embodiment, the cantilever part 220 is provided with a counterbore 221, the counterbore 221 comprises a hexagonal hole and a circular hole connected, and the calibration bolt 230 is arranged in the counterbore 221. When the calibration tool is assembled, first, the clamping and fixing assembly 100 is fixed on the tightening machine, according to the structure design of the support arm 200 and the opening position of the counterbore 221, the axis of the counterbore 221 coincides with the axis of the shaft 1-3 to be calibrated, allowing inevitable processing errors; then the torque sensor 300 is installed on the shaft 1-3, and the calibration nut 240 is installed on the torque sensor 300; then the calibration bolt 230 is installed in the counterbore 221, so that the end of the calibration bolt 230 is coaxial with the calibration nut 240, and the assembly is completed. In the process of torque calibration, the shaft 1-3 to be calibrated rotates through the torque sensor 300 to drive the calibration nut 240 to rotate, and the shaft 1-3 gradually advances, and the calibration nut 240 is screwed with the calibration bolt 230.

[0034] In one embodiment, the transmission part 400 is a tightening head 1-4 or an inner hexagonal sleeve, the two ends of the transmission part 400 are respectively matched with the calibration nut 240 and the connecting head two 320 through concave-convex structures, and the transmission part 400, the calibration nut 240 and the connecting head two 320 can rotate synchronously. It should be noted that the tightening head 1-4 can be detached from the shaft 1-3, and can be used as the transmission part 400 for torque calibration, thereby reducing the number of parts for manufacturing the calibration tool and reducing the cost.

[0035] In one embodiment, the torque sensor 300 is electrically connected with an industrial display screen 500. Specifically, the torque of the shaft 1-3 is transmitted to the industrial display screen 500 through the torque sensor 300 during the calibration process, the torque calibration value of a single shaft 1-3 is recorded, it is quickly judged whether the torque of the tightening machine meets the requirements, and the data can be stored and viewed in real time.

[0036] It should be understood by those of ordinary skill in the art that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of protection of the present application to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present application as described above. In order to be brief, they are not provided in detail.

[0037] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations falling within the broad scope of the present application. Therefore, any omissions, modifications, equivalent replacements, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A tire bolt tightening machine calibration tool, characterized by, The utility model relates to a torque sensor calibration device, including: Clamping fixed assembly (100); Supporting arm (200) including vertical part (210) connected with clamping fixed assembly (100), cantilever part (220) connected with vertical part (210), the cantilever part (220) is provided with calibration bolt (230), the calibration bolt (230) is screwed with calibration nut (240); Torque sensor (300), both ends of the torsion axle of torque sensor (300) are respectively transmission connection has connector one (310) and connector two (320), connector one (310) is used to connect the rotating shaft (1-3) of tightening machine, the torsion axle of torque sensor (300) is coaxial with calibration bolt (230); Transmission part (400), both ends of transmission part (400) are connected to calibration nut (240) and connector two (320) respectively.

2. The calibration tool of claim 1, wherein, Clamping fixed assembly (100) includes clamping plate one (110), clamping plate two (120), fastener (130), the cooperation surface of clamping plate one (110) and clamping plate two (120) are all provided with at least two clamping grooves (140) for clamping at least two guide sleeves (1-2), clamping plate one (110) and clamping plate two (120) are connected through fastener (130).

3. The calibration tool of claim 2, wherein, The fastener (130) includes a fastening bolt (131) and a fastening nut (132).

4. The calibration tool of claim 2, wherein, The inner surface of the clamping groove (140) is an arc surface or a V-shaped surface.

5. The calibration tool of claim 2, wherein, The vertical part (210) is fixedly connected with the clamping plate one (110).

6. The calibration tool of claim 5, wherein, The bottom end of the vertical part (210) is connected with the end of the clamping plate one (110) by screws or welding.

7. The calibration fixture of claim 1, wherein The vertical part (210) is integrally formed with the cantilever part (220) and forms an L-shaped structure.

8. The calibration fixture of claim 1, wherein, A counterbore (221) is formed in the cantilever part (220), the counterbore (221) includes a hexagonal hole and a circular hole connected with each other, and the calibration bolt (230) is arranged in the counterbore (221).

9. The calibration fixture of claim 1, wherein, The transmission part (400) is a tightening head (1-4) or an internal hexagonal sleeve, and the two ends of the transmission part (400) are respectively connected with the calibration nut (240) and the connector two (320) through concave-convex structures.

10. The calibration fixture of any of claims 1-9, wherein, The torque sensor (300) is electrically connected with an industrial control display screen (500).

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