A detection tool for quickly positioning and measuring the size of a sealing groove of a battery box

Abstract

This utility model discloses a testing fixture for quickly locating and measuring the shape and dimension of a battery box sealing groove. The fixture includes a fixture table with an annular boss supporting the top surface of the sealing groove at the bottom of the battery box. Two movable frames, movable towards or away from the battery box, are located on the sides of the fixture table on two adjacent sides of the battery box. A dial indicator is mounted at each end of the movable frame, with its first dial indicator head positioned to contact the side of the battery box. This testing fixture can quickly locate the battery box under test, using the top surface of the sealing groove at the bottom of the battery box as the supporting contact surface. By measuring the deviation value of the side profile of the battery box, the shape error of the bottom sealing groove of the battery box under test can be detected.

Description

Technical Field

[0001] This utility model relates to the field of battery box inspection, specifically to an inspection fixture for quickly locating and measuring the shape and dimensions of the sealing groove of a battery box. Background Technology

[0002] The main purpose of the sealing groove at the bottom of the battery box is to improve the sealing performance of the battery box and ensure that the battery can operate safely and stably under various environmental conditions. In addition, the sealing groove can cooperate with other connecting components to provide a stable installation position and ensure the structural stability of the box. Therefore, the flatness of the bottom surface of the sealing groove directly affects the sealing performance and the fit between components, and the flatness of the bottom surface of the sealing groove needs to be measured.

[0003] Patent CN201335660Y discloses a novel sealing groove position detection device, which consists of a slotted flat-end set screw, an internal hexagon screw, a disc base, a handle, a bracket, a dial indicator stand, and a dial indicator. The handle is installed on the disc base with an internal hexagon screw, the bracket is installed on the disc base with an internal hexagon screw, the dial indicator stand is installed on the bracket with an internal hexagon screw, and the dial indicator is fixed on the dial indicator stand with a slotted flat-end set screw.

[0004] This new sealing groove position detection device can detect sealing grooves with internal stepped grooves, but it cannot detect the shape deviation of the bottom surface of the U-shaped sealing groove at the bottom of the battery box. Utility Model Content

[0005] The purpose of this invention is to provide a testing fixture for quickly locating and measuring the shape and dimensions of the sealing groove of a battery box. This testing fixture can quickly locate the battery box to be tested, using the inner top surface of the sealing groove at the bottom of the battery box as the supporting contact surface to locate the battery box. By measuring the deviation value of the side profile of the battery box, the shape error of the bottom sealing groove of the battery box to be tested can be detected.

[0006] To achieve the above objectives, this utility model provides a testing fixture, which includes a fixture table. The fixture table is provided with an annular boss that can support the top surface of the sealing groove at the bottom of the battery box. On the fixture table, a movable frame that can move towards or away from the battery box is provided at the side positions of two adjacent sides of the battery box. A first dial indicator is installed at each of the left and right ends of the movable frame. The first meter head of the first dial indicator is configured to abut against the contact surface of the side of the battery box.

[0007] Preferably, a second notch is provided at the middle of each side of the annular boss, and a second dial indicator is installed at the bottom of the tooling table at the position of each second notch, with the second dial indicator's second head extending from the second notch.

[0008] Preferably, the tooling table is equipped with a support platform, the tooling table is provided with a positioning rod for positioning the support platform, the support platform is provided with a positioning hole for passing through the positioning rod, and the annular boss is fixedly connected to the support platform.

[0009] Preferably, the movable frame includes a movable plate, with sliders installed at the bottom of both ends of the movable plate, and a slide rail installed on the tooling table to provide sliding for the sliders. A vertical plate is fixed to the inner side of the movable plate, and the first dial indicator is installed on the upper end of the vertical plate. The first meter head of the first dial indicator extends through the vertical plate toward the battery box.

[0010] Preferably, an inwardly extending top plate is installed at the top of the vertical plate, and a third dial indicator is installed on the top plate. The third dial indicator's third head extends downward from the top plate and is connected to a pressure roller.

[0011] Preferably, a connector is provided in the middle of the movable plate, the connector being connected to a push-pull quick clamp mounted on the tooling table, and a fixing block is provided on the tooling table on the outer side of the movable plate, the fixing block being connected to the movable plate by a spring.

[0012] Preferably, the testing fixture further includes a calibration standard component, which includes at least a base plate that can be supported on the annular boss, a side plate facing the first dial indicator, and a reinforcing rib plate connecting adjacent side plates or between the base plate and the side plate.

[0013] Preferably, each side of the annular boss is symmetrically provided with two first notches, the bottom of the first notch is provided with a rotating shaft, the upper end of the rotating shaft is provided with an elliptical rotating pin that can extend into the groove on the bottom surface of the base plate, and the two rotating shafts on the same side are simultaneously connected to a drive mechanism that drives them to rotate synchronously.

[0014] Preferably, the driving mechanism includes a first cylinder mounted on the bottom surface of the tooling table, with a horizontal plate connected to the shaft end of the first cylinder; two racks perpendicular to and symmetrically arranged are connected to both ends of the horizontal plate, and a gear meshing with the racks is sleeved on the lower end of the rotating shaft.

[0015] Preferably, a limiting block is installed on the bottom surface of the tooling table on the outer side of each rack, and the limiting block has a sliding groove on the side facing the rack that slides with the corresponding rack.

[0016] According to the above technical solution, the present invention provides a testing fixture, which includes a fixture table. The fixture table is provided with an annular boss that can support the top surface of the sealing groove at the bottom of the battery box. The fixture table is provided with a movable frame that can move towards or away from the battery box at the side positions of two adjacent sides of the battery box. A first dial indicator is installed at each of the left and right ends of the movable frame. The first meter head of the first dial indicator is configured to abut against the contact surface of the side of the battery box.

[0017] The testing method and beneficial effects of this testing fixture are as follows: During testing, the battery box is placed on the fixture table, and the annular boss extends into the sealing groove, supporting the battery box as a whole on the top surface of the sealing groove. When the top surface of the sealing groove is inclined, and there is a deviation, the battery box will tilt accordingly. Therefore, by measuring the contour deviation values ​​of adjacent sides of the battery box, the shape error of the bottom sealing groove can be determined. Thus, by moving the movable frame, four dial indicators arranged on adjacent sides are brought into contact with the sides of the battery box, and the measurement values ​​of each dial indicator are obtained. These measurement values ​​are compared with the standard value of the reference surface to obtain the deviation value. Combining the four sets of deviation values, the outer contour deviation value of the battery box is obtained, and the shape error of the bottom sealing groove can be determined based on this outer contour deviation value.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the front overall structure of a preferred embodiment of the inspection tooling;

[0021] Figure 2 This is a schematic diagram of the rear view structure of a preferred embodiment of the inspection fixture;

[0022] Figure 3 yes Figure 2 A magnified schematic diagram of a portion of region A in the middle;

[0023] Figure 4 yes Figure 1 A magnified schematic diagram of a portion of region B in the middle;

[0024] Figure 5 This is a schematic diagram of the bottom side view structure of a preferred embodiment of the inspection fixture;

[0025] Figure 6 yes Figure 5 A magnified schematic diagram of a portion of region C in the middle;

[0026] Figure 7 This is a schematic diagram of the testing fixture equipped with calibration standard parts;

[0027] Figure 8 This is a schematic diagram of the testing fixture with the battery box to be tested.

[0028] Figure 9 This is a schematic diagram of the bottom view of the battery box under test.

[0029] Explanation of reference numerals in the attached figures

[0030] 1-Tooling table; 2-Supporting table; 3-Annular boss; 4-Slide rail; 5-Slider; 6-Moving plate; 7-Vertical plate; 8-Top plate; 9-Third dial indicator; 10-Fixing block; 11-Spring; 12-First dial indicator; 13-Connector; 14-Second indicator head; 15-Positioning rod; 16-Pressure roller; 17-First indicator head; 18-First notch; 19-Second notch; 20-Rotating shaft; 21-Elliptical rotating pin; 22-Supporting column; 23-First cylinder; 24-Horizontal plate; 25-Limiting block; 26-Gear; 27-Second dial indicator; 28-Base plate; 29-Side plate; 30-Rack; 31-Reinforcing rib plate; 32-Battery box; 33-Contact surface; 34-Sealing groove; 35-Push-pull quick clamp. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0032] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0033] See Figure 1-9 The testing fixture shown includes a fixture table 1. The fixture table 1 is provided with an annular boss 3 that can support the top surface of the sealing groove 34 at the bottom of the battery box 32. The fixture table 1 is provided with a movable frame at the side position of each of the two adjacent sides of the battery box 32, which can move towards or away from the battery box 32. A first dial indicator 12 is installed at each of the left and right ends of the movable frame. The first meter head 17 of the first dial indicator 12 is configured to abut against the contact surface 33 of the side of the battery box 32.

[0034] By implementing the above technical solution, during testing, the battery box 32 is placed on the tooling table 1. The tooling table 1 has a support column 22 at its bottom, which extends into the sealing groove 34 via an annular boss 3, supporting the battery box 32 as a whole on the top surface of the sealing groove 34. When the top surface of the sealing groove 34 is inclined and there is a deviation, the battery box 32 will tilt accordingly. The shape error of the bottom sealing groove 34 can be determined by measuring the contour deviation values ​​of adjacent sides of the battery box 32. Therefore, by moving the movable frame, the four dial indicators 12 arranged on adjacent sides are brought into contact with the sides of the battery box 32, and the measurement values ​​of each dial indicator 12 are obtained. These measurement values ​​are compared with the standard value of the reference surface to obtain the deviation value. Combining the four sets of deviation values, the outer contour deviation value of the battery box 32 is obtained, and thus the shape error of the bottom sealing groove 34 can be determined based on this outer contour deviation value.

[0035] In this embodiment, a second notch 19 is provided at the center of each side of the annular boss 3. A second dial indicator 27 is installed at the bottom of the tooling table 1 at the position of each second notch 19, and the second dial indicator 14 of the second dial indicator 27 extends out from the second notch 19. That is, the annular boss 3 has a total of four second notches 19, and the positions of the second notches 19 are provided with protrusion holes for the second dial indicator 14 to extend out. The four second dial indicators 27 are used to detect the flatness of the bottom surface of the battery box 32. Since the battery box 32 is supported on the annular boss 3, there is a distance between the battery box 32 and the tooling table 1. By detecting the flatness of the bottom surface, it can also be determined whether the battery box 32 is placed in place. At the same time, the depth of the sealing groove 34 at the second dial indicator 14 can also be detected.

[0036] In this embodiment, the tooling table 1 is equipped with a support platform 2. The tooling table 1 is provided with a positioning rod 15 for positioning the support platform 2, and the support platform 2 is provided with a positioning hole for the positioning rod 15 to pass through. The annular boss 3 is fixedly connected to the support platform 2. By providing the support platform 2, the height of the battery box 32 is increased, making it easier to observe and operate. The cooperation of multiple positioning rods 15 with the positioning holes facilitates rapid assembly.

[0037] In this embodiment, the movable frame includes a movable plate 6, with sliders 5 mounted at both ends of the movable plate 6. A slide rail 4 is mounted on the tooling table 1 to allow the sliders 5 to slide. A vertical plate 7 is fixedly connected to the inner side of the movable plate 6. A first dial indicator 12 is mounted on the upper end of the vertical plate 7, and the first meter head 17 of the first dial indicator 12 extends through the vertical plate 7 toward the battery box 32. During operation, the sliders 5 on the movable plate 6 slide along the slide rail 4, causing the first dial indicators 12 at both ends to move closer to or further away from the battery box 32.

[0038] In this embodiment, an inwardly extending top plate 8 is installed at the top of the vertical plate 7. A third dial indicator 9 is installed on the top plate 8, and the third meter head of the third dial indicator 9 extends downward from the top plate 8 and is connected to a pressure roller 16. With this arrangement, when the first meter head 17 abuts against the side of the battery box 32, the pressure roller 16 rolls to the top of the battery box 32 and is squeezed upward, so that the third dial indicator 9 obtains a reading, thereby understanding the flatness of the top surface. Obtaining the flatness of the top surface makes it easier to judge the shape error of the bottom sealing groove 34.

[0039] In this embodiment, a connector 13 is provided in the middle of the movable plate 6. The connector 13 is connected to a push-pull quick clamp 35 mounted on the tooling table 1. A fixing block 10 is provided on the tooling table 1 on the outer side of the movable plate 6. The fixing block 10 is connected to the movable plate 6 by a spring 11. By pushing forward or pulling back the push-pull quick clamp 35, the connector 13 is pushed, causing the movable plate 6 to move or retract. When pushing forward, the spring 11 is stretched; when retracting, the spring 11 returns to its original position, facilitating operation.

[0040] In this embodiment, the testing fixture further includes a calibration standard component, which includes at least a base plate 28 that can be supported on the annular boss 3, a side plate 29 facing the first dial indicator 12, and a reinforcing rib 31 connecting adjacent side plates 29 or between the base plate 28 and the side plate 29. By installing the calibration standard component on the annular boss 3, the distance values ​​of the side plates 29 are measured using four first dial indicators 12, and these distance values ​​are used as reference surface standard values ​​for comparison with the actual battery box 32 measurements. The bottom surface of the base plate 28 also has a sealing groove 34, which is a standard groove with a standard plane inner top surface. Therefore, when placed on the annular boss 3, the side plates 29 are all in a vertical state and can be used as reference surfaces.

[0041] In this embodiment, two first notches 18 are symmetrically arranged on each side of the annular boss 3. A rotating shaft 20 is provided at the bottom of the first notch 18, and an elliptical rotating pin 21 that can extend into the groove on the bottom surface of the base plate 28 is provided at the upper end of the rotating shaft 20. The two rotating shafts 20 on the same side are simultaneously connected to a drive mechanism that drives them to rotate synchronously. Since the width of the sealing groove 34 is greater than the width of the annular boss 3, in order to ensure more accurate positioning, the elliptical rotating pins 21 are rotated so that the sides of the eight elliptical rotating pins 21 contact the wall of the sealing groove 34, increasing the stability of the battery box 32 or the calibration standard parts placed on the annular boss 3.

[0042] In this embodiment, the driving mechanism includes a first cylinder 23 mounted on the bottom surface of the tooling table 1. A horizontal plate 24 is connected to the shaft end of the first cylinder 23. Two racks 30, perpendicular and symmetrically arranged to the horizontal plate 24, are connected to both ends of the horizontal plate 24. A gear 26 meshing with the racks 30 is sleeved on the lower end of the rotating shaft 20. With this arrangement, the first cylinder 23 pushes the racks 30 on both sides to move, causing the gear 26 to rotate. The rotation of the gear 26 causes the rotating shaft 20 and the elliptical rotating pins 21 to rotate, and the two elliptical rotating pins 21 on the same side rotate synchronously.

[0043] In this embodiment, a limiting block 25 is installed on the bottom surface of the tooling table 1 on the outer side of each rack 30. The limiting block 25 has a sliding groove on the side facing the rack 30 that slides with the corresponding rack 30. The setting of the limiting block 25 makes the guidance of the rack 30 more stable.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0046] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A detection tool for quickly positioning and measuring the size of a sealing groove of a battery box, characterized in that, The testing fixture includes a fixture table (1), on which an annular boss (3) is provided to support the top surface of the sealing groove (34) at the bottom of the battery box (32). On the fixture table (1), a movable frame is provided at the side position of two adjacent sides of the battery box (32), which can move towards or away from the battery box (32). A first dial indicator (12) is installed at each of the left and right ends of the movable frame. The first meter head (17) of the first dial indicator (12) is configured to abut against the contact surface (33) of the side of the battery box (32).

2. The inspection tool of claim 1, wherein Each side of the annular boss (3) is provided with a second notch (19) in the middle. The bottom of the tooling table (1) is provided with a second dial indicator (27) at the position of each second notch (19). The second dial indicator (27) has a second head (14) extending out from the second notch (19).

3. The inspection tool of claim 1, wherein The tooling table (1) is equipped with a support platform (2). The tooling table (1) is provided with a positioning rod (15) for positioning the support platform (2). The support platform (2) is provided with a positioning hole for passing through the positioning rod (15). The annular boss (3) is fixed to the support platform (2).

4. The inspection tool of claim 1, wherein The movable frame includes a movable plate (6), and sliders (5) are installed at the bottom of both ends of the movable plate (6). A slide rail (4) is installed on the tooling table (1) to provide sliding for the sliders (5). A vertical plate (7) is fixed to the inner side of the movable plate (6). The first dial indicator (12) is installed on the upper end of the vertical plate (7). The first meter head (17) of the first dial indicator (12) extends through the vertical plate (7) toward the battery box (32).

5. The inspection tool of claim 4, wherein, The top of the vertical plate (7) is fitted with an inwardly extending top plate (8), on which a third dial indicator (9) is mounted. The third dial indicator (9) extends downward from the top plate (8) and is connected to a pressure roller (16).

6. The testing fixture according to claim 5, characterized in that, A connector (13) is provided in the middle of the movable plate (6), and the connector (13) is connected to a push-pull quick clamp (35) installed on the tooling table (1). A fixing block (10) is provided on the tooling table (1) on the outside of the movable plate (6), and the fixing block (10) is connected to the movable plate (6) by a spring (11).

7. The inspection tool of any one of claims 1-6, wherein, The testing fixture also includes calibration standard parts; The calibration standard component includes at least a base plate (28) that can be supported on the annular boss (3), a side plate (29) facing the first dial indicator (12), and a reinforcing rib plate (31) connecting adjacent side plates (29) or between the base plate (28) and the side plate (29).

8. The inspection tool of claim 7, wherein, Two first notches (18) are symmetrically arranged on each side of the annular boss (3). A rotating shaft (20) is provided at the bottom of the first notch (18). An elliptical rotating pin (21) that can extend into the groove on the bottom surface of the base plate (28) is provided at the upper end of the rotating shaft (20). The two rotating shafts (20) on the same side are simultaneously connected to a driving mechanism that drives them to rotate synchronously.

9. The inspection tool of claim 8, wherein, The drive mechanism includes a first cylinder (23) mounted on the bottom surface of the tooling table (1), and a cross plate (24) is connected to the shaft end of the first cylinder (23); The two ends of the horizontal plate (24) are connected to two racks (30) that are perpendicular to and symmetrically arranged therewith, and the lower end of the rotating shaft (20) is fitted with a gear (26) that meshes with the racks (30).

10. The inspection tool of claim 9, wherein, A limiting block (25) is installed on the bottom surface of the tooling table (1) on the outside of each rack (30); The limiting block (25) has a sliding groove on the side facing the rack (30) that slides in cooperation with the corresponding rack (30).

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