A go-no go gauge testing device

Abstract

The utility model relates to detection device technical field especially, and it is a kind of pass, stop gauge calibrating device for solving the problem of low efficiency of prior art detection pass stop gauge;The device includes detection table, and detection block is slidably connected on detection table, and standard gap is set up on detection block;It further includes first pivot and second pivot, and counterweight is fixedly connected on the lateral wall of second pivot, and pass gauge and stop gauge are respectively installed on two electric clamps, and pull rope is connected between first pivot and second pivot, and detection plate is connected on pull rope by insertion;Detection table is slidably connected with rack, and first proximity switch, second proximity switch and third proximity switch are installed on rack in linear arrangement;The operation state of the three proximity switches, whether pass gauge and the stop gauge matched therewith meet the requirements are known, and the weight of counterweight drives second pivot to rotate, so that the detection force of pass gauge and stop gauge is not too large, and the detection accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, specifically a go / no-go gauge calibration device. Background Technology

[0002] In the fields of machining and precision measurement, go gauges and no-go gauges (hereinafter referred to as "go and no-go gauges") are the core measuring tools for dimensional accuracy inspection. Their own accuracy directly determines the dimensional qualification of the inspected workpiece. Therefore, the periodic verification of go and no-go gauges is a key link to ensure the reliability of measurement.

[0003] Traditional go / no-go gauge calibration relies heavily on manual operation. The inspector holds a standard gauge block or a special calibration piece, manually aligns the go / no-go gauge with the standard gap, and applies force to perform a pass / fail test. This method has significant limitations: the amount of force applied depends entirely on the operator's experience; excessive force can easily deform the go / no-go gauge or the standard piece, while insufficient force may result in the go gauge not passing completely or the no-go gauge being misjudged as passing. The repeatability and accuracy of the test are difficult to guarantee. For different specifications of go / no-go gauges, it is necessary to frequently change the standard piece and adjust the test position, which is cumbersome and has poor adaptability. Utility Model Content

[0004] This invention provides a device for calibrating go and no-go gauges to solve the problem of low efficiency in the existing technology for calibrating go and no-go gauges.

[0005] To alleviate the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A go / no-go gauge calibration device includes a testing platform, on which a testing block is slidably connected, and a standard gap is provided on the testing block;

[0007] It also includes a first rotating shaft and a second rotating shaft. A counterweight is fixedly connected to the side wall of the second rotating shaft. Two electric grippers are installed on the counterweight. A go gauge and a no-go gauge are respectively installed on the two electric grippers. A pull rope is connected between the first rotating shaft and the second rotating shaft. A detection plate is inserted and connected to the pull rope.

[0008] A rack is slidably connected to the testing platform. A gear that meshes with the rack is fixedly connected to the first rotating shaft. A first proximity switch, a second proximity switch, and a third proximity switch are linearly arranged on the rack. The third proximity switch is higher than the first and second proximity switches. When the go gauge passes through the standard gap and the no-go gauge does not pass through the standard gap, the testing plate moves down and the second proximity switch touches the testing plate. When both the go and no-go gauges pass through the standard gap, the third proximity switch touches the testing plate. When neither the go nor no-go gauges pass through the standard gap, the first proximity switch touches the testing plate.

[0009] Furthermore, a motor is fixedly connected to the testing platform, and the first rotating shaft is fixedly connected to the motor.

[0010] Furthermore, a storage roller is fixedly connected to the first rotating shaft, and one end of the pull rope is wound and connected to the storage roller. The first rotating shaft rotates in one direction so that the storage roller first releases and then stores the pull rope, thereby causing the second rotating shaft to rotate first in the first direction and then in the second direction.

[0011] Furthermore, a limiting plate is fixedly connected to the detection platform, and the detection plate is in contact with the limiting plate.

[0012] Furthermore, an electric rotating rod is rotatably connected to the limiting plate, and a guide plate is fixedly connected to the electric rotating rod. When the second proximity switch touches the detection plate, the electric rotating rod rotates in a first direction, and when the first proximity switch or the third proximity switch touches the detection plate, the electric rotating rod rotates in a second direction.

[0013] Furthermore, a first screw is rotatably connected to the testing platform, and a threaded hole that mates with the first screw is provided on the testing block. A first handle is provided at the end of the first screw.

[0014] Furthermore, a pointer is fixedly connected to the detection stage, and the detection block is engraved with scales that correspond to the pointer.

[0015] Furthermore, a second screw is rotatably connected to the testing platform. The second screw is perpendicular to the axis of the first screw, and a second handle is provided at the end of the second screw. When the second screw is tightened, the second screw abuts against the testing block, thereby fixing the testing block to the testing platform.

[0016] The beneficial effects of this utility model are analyzed as follows:

[0017] A go / no-go gauge calibration device includes a testing platform with a slidably connected testing block having a standard gap. It also includes a first rotating shaft and a second rotating shaft, with a counterweight fixedly connected to the side wall of the second rotating shaft. Two electric grippers are mounted on the counterweight, each holding a go gauge and a no-go gauge respectively. A pull rope connects the first and second rotating shafts, with a testing plate threaded through the rope. A rack is slidably connected to the testing platform, and a gear meshing with the rack is fixedly connected to the first rotating shaft. A first proximity switch, a second proximity switch, and a third proximity switch are linearly arranged on the rack, with the third proximity switch higher than the first and second proximity switches. When the go gauge passes through the standard gap but the no-go gauge does not, the testing plate moves downward, and the second proximity switch touches the testing plate. When both the go and no-go gauges pass through the standard gap, the third proximity switch touches the testing plate. When neither the go nor no-go gauges pass through the standard gap, the first proximity switch touches the testing plate.

[0018] When testing the go and no-go gauges, the go and no-go gauges are mounted on two electric grippers respectively. The position of the testing block is adjusted, and a standard gap of appropriate size is selected to align with the go and no-go gauges to be tested. The first shaft rotates, releasing the pull rope. At this time, the weight of the counterweight drives the second shaft to rotate, so that the go gauge first approaches the standard gap. Then, after the go gauge passes through the standard gap, the no-go gauge moves to the entrance of the standard gap and no longer penetrates it. At this point, the go and no-go gauges meet the requirements. In the aforementioned state, the first shaft drives the gear to rotate. At this time, the gear drives the rack to slide, and the go gauge passes through the standard gap. At this time, the pull rope is still taut, so the testing plate will not move down. At this time, the first proximity switch can pass through the lower part of the testing plate. When the no-go gauge does not pass through the standard gap, the first shaft continues to rotate. At this time, the pull rope loosens, so the testing plate moves down. The second proximity switch touches the detection plate. When the go and no-go gauges fail, either the go and no-go gauges will not pass through the standard gap, or both will pass through the standard gap. If both the go and no-go gauges fail to pass through the standard gap, the second rotating shaft will stop rotating when the go gauge touches the standard gap. At this time, the pull rope will loosen, the detection plate will move down, and the first proximity switch will touch the detection plate. If both the go and no-go gauges pass through, the pull rope will always be taut, the detection plate will not move down, and the higher third proximity switch will touch the detection plate. By observing the operation of the three proximity switches, it can be determined whether the go gauge and its matching no-go gauge meet the requirements. In addition, the weight of the counterweight drives the second rotating shaft to rotate, ensuring that the force applied to the go and no-go gauges is not too large, thus ensuring the accuracy of the test. The same set of go and no-go gauges can be tested multiple times to improve the accuracy of the test. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2This is a schematic diagram of the pointer structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the gear structure of this utility model;

[0022] Figure 4 This is a diagram showing the state of the go gauge passing through and the no-go gauge not passing through in this utility model.

[0023] Figure 5 This is a diagram showing the state where both the go and no-go gauges of this utility model have passed.

[0024] Figure 6 This is a diagram showing the state where the general gauge of this utility model fails to pass.

[0025] Figure 7 This is a structural schematic diagram of the present invention in the state of the rope release.

[0026] Figure 8 This is a structural diagram of the present invention in the state where the pull rope has been released.

[0027] Figure 9 This is a structural diagram of the pull rope of this utility model in the state of starting to wind up;

[0028] Figure 10 This is a schematic diagram of the structure of the guide plate of this utility model.

[0029] In the diagram: 100, testing platform; 110, testing block; 111, standard gap; 120, first screw; 121, first handle; 130, second screw; 131, second handle; 140, pointer; 200, motor; 210, first shaft; 220, collecting roller; 221, pull rope; 230, second shaft; 240, counterweight; 250, electric gripper; 251, no-go gauge; 252, go gauge; 300, gear; 310, rack; 311, first proximity switch; 312, second proximity switch; 313, third proximity switch; 320, limit plate; 330, testing plate; 400, electric rotating rod; 410, guide plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Examples, such as Figures 1-10As shown, a go / no-go gauge calibration device includes a testing platform 100, on which a testing block 110 is slidably connected, and a standard gap 111 is formed on the testing block 110; it also includes a first rotating shaft 210 and a second rotating shaft 230, on which a counterweight 240 is fixedly connected to the side wall of the second rotating shaft 230, and two electric grippers 250 are mounted on the counterweight 240, on which a go gauge 252 and a no-go gauge 251 are respectively mounted; a pull rope 221 connects the first rotating shaft 210 and the second rotating shaft 230, and a testing plate 330 is inserted through the pull rope 221; a rack 310 is slidably connected to the testing platform 100, and a rack 310 is fixedly connected to the first rotating shaft 210. The meshing gear 300 has a rack 310 on which a first proximity switch 311, a second proximity switch 312, and a third proximity switch 313 are linearly arranged. The third proximity switch 313 is higher than the first proximity switch 311 and the second proximity switch 312. When the go gauge 252 passes through the standard gap 111 and the no-go gauge 251 does not pass through the standard gap 111, the detection plate 330 moves down and the second proximity switch 312 touches the detection plate 330. When both the go gauge 252 and the no-go gauge 251 pass through the standard gap 111, the third proximity switch 313 touches the detection plate 330. When neither the go gauge 252 nor the no-go gauge 251 passes through the standard gap 111, the first proximity switch 311 touches the detection plate 330.

[0032] During the inspection of go and no-go gauges, go gauge 252 and no-go gauge 251 are respectively installed on two electric grippers 250. The position of the inspection block 110 is adjusted, and a standard gap 111 of appropriate size is selected and aligned with the go and no-go gauges to be inspected. The first rotating shaft 210 rotates, releasing the pull rope 221. At this time, the gravity of the counterweight 240 drives the second rotating shaft 230 to rotate, so that the go gauge 252 first approaches the standard gap 111. Then, after the go gauge 252 passes through the standard gap 111, the no-go gauge 251 moves to the entrance of the standard gap 111 and no longer penetrates into the standard gap 111. At this time, the go gauge... If gauges 252 and 251 meet the requirements, in the aforementioned state, the first rotating shaft 210 drives the gear 300 to rotate. At this time, the gear 300 drives the rack 310 to slide, and the go gauge 252 passes through the standard gap 111. At this time, the pull rope 221 is still taut, so the detection plate 330 will not move down. At this time, the first proximity switch 311 can pass through the lower part of the detection plate 330. When the stop gauge 251 does not pass through the standard gap 111, the first rotating shaft 210 continues to rotate. At this time, the pull rope 221 loosens, so the detection plate 330 moves down. At this time, the second proximity switch 312 touches the detection plate 330.

[0033] When the go and no-go gauges fail, either go gauge 252 and no-go gauge 251 will fail to pass through the standard gap 111, or both will pass through the standard gap 111. If both go gauge 252 and no-go gauge 251 fail to pass through the standard gap 111, the second rotating shaft 230 will stop rotating when go gauge 252 contacts the standard gap 111. At this time, the pull rope 221 will loosen, the detection plate 330 will move down, and the first proximity switch 311 will touch the detection plate 330. If both go gauge 252 and no-go gauge 251 pass through... The pull rope 221 remains taut, and the detection plate 330 does not move down. At this time, the higher third proximity switch 313 can touch the detection plate 330. By observing the operation of the three proximity switches, it can be determined whether the go gauge 252 and its matching no-go gauge 251 meet the requirements. In addition, the weight of the counterweight 240 drives the second rotating shaft 230 to rotate, ensuring that the force applied to the go and no-go gauges is not too large, thereby ensuring the accuracy of the detection. The same set of go and no-go gauges can be tested multiple times to improve the detection accuracy.

[0034] Reference Figure 3 A motor 200 is fixedly connected to the testing table 100, and a first rotating shaft 210 is fixedly connected to the motor 200.

[0035] The motor 200 is used to drive the first rotating shaft 210 to rotate. When the first proximity switch 311 or the third proximity switch 313 touches the detection plate 330, the direction of the motor 200 is reversed, causing the pull rope 221 to be wound up again, thereby causing the second rotating shaft 230 to rotate in the opposite direction.

[0036] Reference Figures 4-9 A storage roller 220 is fixedly connected to the first rotating shaft 210. One end of the pull rope 221 is wound and connected to the storage roller 220. The first rotating shaft 210 rotates in one direction so that the storage roller 220 releases and then stores the pull rope 221, thereby causing the second rotating shaft 230 to rotate first in the first direction and then in the second direction.

[0037] One end of the pull rope 221 is fixedly connected to the side wall of the second rotating shaft 230, and the connection point of the pull rope 221 is close to the position of the counterweight 240 on the cross-sectional projection of the second rotating shaft 230. The other end of the pull rope 221 radially passes through the collecting roller 220 and is fixedly connected. When the first rotating shaft 210 rotates clockwise, the pull rope 221 is fixedly connected to the counterweight 240. Figure 7 Become Figure 9 In this state, the pull rope 221 is first released and then wound up, which will drive the second rotating shaft 230 to first move the go and no-go gauges closer to the detection block 110 and then away from the detection block 110.

[0038] Reference Figures 4-6 A limiting plate 320 is fixedly connected to the testing table 100, and the testing plate 330 is in contact with the limiting plate 320.

[0039] The height of the second rotating shaft 230 is higher than that of the first rotating shaft 210. When the rotation of the second rotating shaft 230 is obstructed, the first rotating shaft 210 continues to rotate, causing the pull rope 221 to loosen, thereby causing the detection plate 330 to move down. The setting of the limiting plate 320 makes it difficult for the lateral position of the detection plate 330 to deviate.

[0040] Reference Figure 10 An electric rotating rod 400 is rotatably connected to the limiting plate 320, and a guide plate 410 is fixedly connected to the electric rotating rod 400. When the second proximity switch 312 touches the detection plate 330, the electric rotating rod 400 rotates in the first direction, and when the first proximity switch 311 or the third proximity switch 313 touches the detection plate 330, the electric rotating rod 400 rotates in the second direction.

[0041] Both sides of the guide plate 410 in the inclined direction are provided with containers for holding the tested go and no-go gauges. The proximity switch controls the rotation of the electric rotary rod 400, so that the guide plate 410 separates and holds the tested go and no-go gauges that have passed and failed. When the second proximity switch 312 is running, it means that the go and no-go gauges have passed. When the other proximity switches are running, the go and no-go gauges have failed.

[0042] It should be noted that the length of the go gauge 252 extending out of the electric gripper 250 should conform to the setting. Under the set extension length, the first proximity switch 311 will just pass the position of the detection plate 330 only when the go gauge 252 completely passes through the standard gap 111.

[0043] Reference Figure 1 and Figure 2 The testing platform 100 is rotatably connected to a first screw 120, and the testing block 110 is provided with a threaded hole that mates with the first screw 120. The end of the first screw 120 is provided with a first handle 121.

[0044] Rotating the first screw 120 can drive the detection block 110 to move laterally on the detection table 100, thereby adjusting the range corresponding to the standard gap 111.

[0045] Reference Figure 1 and Figure 2 A pointer 140 is fixedly connected to the detection stage 100, and the detection block 110 is engraved with a scale that matches the pointer 140.

[0046] The detection block 110 is set with a scale corresponding to the standard gap 111. The pointer 140 corresponds to the scale, making the change of the measurement range more intuitive.

[0047] Reference Figure 1 and Figure 2A second screw 130 is rotatably connected to the testing table 100. The second screw 130 is perpendicular to the axis of the first screw 120. A second handle 131 is provided at the end of the second screw 130. When the second screw 130 is tightened, the second screw 130 abuts against the testing block 110, thereby fixing the testing block 110 to the testing table 100.

[0048] After selecting the appropriate scale, tightening the second screw 130 will lock the position of the detection block 110.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calibration device for go / no-go gauges, characterized in that: Includes a testing platform (100), on which a testing block (110) is slidably connected, and a standard gap (111) is provided on the testing block (110). It also includes a first rotating shaft (210) and a second rotating shaft (230). A counterweight (240) is fixedly connected to the side wall of the second rotating shaft (230). Two electric grippers (250) are installed on the counterweight (240). A go gauge (252) and a no-go gauge (251) are respectively installed on the two electric grippers (250). A pull rope (221) is connected between the first rotating shaft (210) and the second rotating shaft (230). A detection plate (330) is inserted and connected to the pull rope (221). A rack (310) is slidably connected to the testing platform (100). A gear (300) that meshes with the rack (310) is fixedly connected to the first rotating shaft (210). A first proximity switch (311), a second proximity switch (312), and a third proximity switch (313) are linearly arranged on the rack (310). The height of the third proximity switch (313) is higher than that of the first proximity switch (311) and the second proximity switch (312). A gauge (252) passes through the standard gap (11). 1) When the no-go gauge (251) does not pass through the standard gap (111), the detection plate (330) moves down and the second proximity switch (312) touches the detection plate (330). When both the go gauge (252) and the no-go gauge (251) pass through the standard gap (111), the third proximity switch (313) touches the detection plate (330). When neither the go gauge (252) nor the no-go gauge (251) passes through the standard gap (111), the first proximity switch (311) touches the detection plate (330).

2. The calibration device for go / no-go gauges according to claim 1, characterized in that: A motor (200) is fixedly connected to the testing platform (100), and the first rotating shaft (210) is fixedly connected to the motor (200).

3. The calibration device for go / no-go gauges according to claim 2, characterized in that: A storage roller (220) is fixedly connected to the first rotating shaft (210). One end of the pull rope (221) is wound around the storage roller (220). The first rotating shaft (210) rotates in one direction so that the storage roller (220) releases and then stores the pull rope (221). As a result, the second rotating shaft (230) rotates first in the first direction and then in the second direction.

4. The go / no-go gauge calibration device according to claim 3, characterized in that: A limiting plate (320) is fixedly connected to the testing platform (100), and the testing plate (330) is in contact with the limiting plate (320).

5. The go / no-go gauge calibration device according to claim 4, characterized in that: An electric rotating rod (400) is rotatably connected to the limiting plate (320), and a guide plate (410) is fixedly connected to the electric rotating rod (400). When the second proximity switch (312) touches the detection plate (330), the electric rotating rod (400) rotates in the first direction, and when the first proximity switch (311) or the third proximity switch (313) touches the detection plate (330), the electric rotating rod (400) rotates in the second direction.

6. The calibration device for go / no-go gauges according to claim 1, characterized in that: The detection platform (100) is rotatably connected to a first screw (120), and the detection block (110) is provided with a threaded hole that mates with the first screw (120). The end of the first screw (120) is provided with a first handle (121).

7. The calibration device for go / no-go gauges according to claim 6, characterized in that: A pointer (140) is fixedly connected to the detection stage (100), and the detection block (110) is engraved with a scale that matches the pointer (140).

8. The calibration device for go / no-go gauges according to claim 6, characterized in that: A second screw (130) is rotatably connected to the testing platform (100). The second screw (130) is perpendicular to the axis of the first screw (120). A second handle (131) is provided at the end of the second screw (130). When the second screw (130) is tightened, the second screw (130) abuts against the testing block (110), thereby fixing the testing block (110) to the testing platform (100).

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