Clamp for ring gauge calibration

Abstract

The clamp comprises a first substrate and a second substrate, the first substrate is fixedly connected to the second substrate, a partition plate is installed in the middle of the upper surface of the second substrate, and a height measuring assembly is installed on the side, close to the first substrate, of the upper surface of the partition plate; the upper surface of the second substrate is slidably provided with a group of sliding rails on the left and right sides of the partition plate, the upper surface of each group of sliding rails is provided with a first clamping plate for clamping the ring gauge on one side of the height measuring assembly, and the outer side of each group of first clamping plate is rotatably provided with a second clamping plate for assisting in clamping the ring gauge. Pushing blocks used for pushing the ring gauges are installed on the sides, away from the height measuring assembly, of the upper surfaces of the sliding rails correspondingly. According to the utility model, the distance between the double slide rails is synchronously adjusted through the electric push rod to adapt to ring gauges of different specifications, and double-posture detection of the ring gauges parallel to or perpendicular to the second substrate is supported.

Description

Technical Field

[0001] This utility model relates to the field of ring gauge calibration technology, and more specifically, to a fixture for ring gauge calibration. Background Technology

[0002] A ring gauge is a circular ring with specific dimensions and properties, mainly used to correct deficiencies in measuring tools. Ring gauges include threaded ring gauges and smooth ring gauges. After a period of use, ring gauges need to be calibrated and tested to determine whether they meet the usage requirements.

[0003] Traditional ring gauge calibration typically relies on general-purpose fixtures (such as V-blocks and three-jaw chucks) or dedicated fixed fixtures. However, existing technologies have significant limitations: firstly, they are limited in function, with most fixtures only supporting a single ring gauge posture, making it impossible to conveniently measure the thickness and diameter of the ring gauge on the same fixture. This necessitates repeated disassembly and assembly or fixture replacement, resulting in low efficiency and the potential introduction of secondary clamping errors.

[0004] Secondly, the clamping stability is insufficient. The ring gauge has a smooth surface and a special shape. The general-purpose clamp has a small contact area and lacks anti-slip design, making it easy to slip, deflect or even fall off during clamping. The stability is even worse when measuring diameter, which directly affects the measurement accuracy and operational safety.

[0005] Third, they have poor adaptability. Fixed fixtures are difficult to adapt to different sizes of ring gauges, and replacement or adjustment is cumbersome; while adjustable fixtures are often complex in structure, have low adjustment accuracy, or lack reliable spacing limits, posing a risk of collision.

[0006] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fixture for ring gauge calibration.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A fixture for ring gauge calibration includes a first base plate and a second base plate. The first base plate is fixedly connected to the second base plate. A partition is installed in the middle of the upper surface of the second base plate. A height measuring component is installed on the upper surface of the partition plate near the first base plate. A set of slide rails is slidably installed on the left and right sides of the partition plate on the upper surface of the second base plate. A first clamping plate for clamping the ring gauge is installed on the upper surface of each set of slide rails on the side of the height measuring component. A second clamping plate for assisting in clamping the ring gauge is rotatably installed on the outer side of each set of first clamping plates. A pusher block for pushing the ring gauge is installed on the upper surface of the slide rails away from the height measuring component.

[0010] Furthermore, two sets of electric push rods are installed in the middle of the upper surface of the first substrate, and each set of electric push rods has an L-shaped connecting plate installed at its telescopic end.

[0011] Furthermore, the height measuring component includes a hydraulic cylinder mounted on the upper surface of the partition plate, a limit block is installed at the telescopic top of the hydraulic cylinder, a pressure block is slidably mounted at one end of the limit block, and a positioning seat is installed on one side of the hydraulic cylinder.

[0012] Furthermore, a servo motor is installed on the upper surface of the second substrate at the end of the partition. A lead screw is keyed to the output end of the servo motor. The end of the lead screw is rotatably installed on a positioning seat. A square moving block is threaded onto the outer arc surface of the lead screw. A set of limiting seats is installed on the left and right sides of the square moving block. A set of sliding blocks is movably installed on the outer side of each set of limiting seats. Each set of sliding blocks is slidably engaged with the slide rail and the baffle.

[0013] Furthermore, a frame is installed on the upper surface of the square movable block, and two sets of connecting frames for connecting the corresponding side push blocks are symmetrically installed inside the frame.

[0014] Furthermore, a baffle is installed inside the slide rail.

[0015] Furthermore, a set of baffles for blocking the movement of the ring gauge is installed on the corresponding side of each of the two sets of first clamping plates, and a rubber pad is installed on one end of the corresponding push block of each of the two sets of first clamping plates.

[0016] Furthermore, a pneumatic cylinder is rotatably mounted on the outer surface of each first clamping plate away from the second clamping plate. A ball joint rod is mounted on the telescopic end of the pneumatic cylinder. An installation block is mounted in the middle of the outer surface of the second clamping plate. Several sets of ball joint shells for limiting the ball joint rod are embedded in the installation block. Each set of ball joint rods is rotatably mounted inside the ball joint shell.

[0017] Furthermore, each set of push blocks has a clamping plate installed on one side corresponding to the first clamping plate, and the two sets of clamping plates are installed opposite each other in an open manner.

[0018] The beneficial effects of this utility model are:

[0019] 1. In this utility model, the distance between the two slide rails is synchronously adjusted by an electric push rod to accommodate ring gauges of different specifications, supporting dual-position detection of the ring gauge parallel or perpendicular to the second substrate; when the ring gauge is placed vertically, the two sets of first clamping plates cooperate to clamp the end face of the ring gauge to facilitate the measurement of the ring gauge thickness, the baffle plate prevents the ring gauge from displacing and hitting the hydraulic cylinder, the hydraulic cylinder drives the pressure block to move down, and the pressure block presses down to clamp the ring gauge to facilitate the measurement of the ring gauge diameter; when the ring gauge is placed parallel, the pneumatic cylinder drives the second clamping plate to unfold and fit against the outer arc surface of the ring gauge, and cooperates with the clamping plate on the push block to clamp it, significantly increasing the contact area and preventing slippage.

[0020] 2. In this utility model, a partition is set to limit the minimum distance between the two sets of slide rails to prevent collisions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a fixture used for ring gauge calibration in this embodiment;

[0022] Figure 2 This is an exploded view of a fixture used for ring gauge calibration in this embodiment;

[0023] Figure 3 for Figure 2 Enlarged view of section A;

[0024] Figure 4 This is a schematic diagram of a connection structure between the partition and the second substrate in this embodiment;

[0025] Figure 5 This is a schematic diagram showing a split view of the connection structure between the first clamping plate and the second clamping plate in this embodiment;

[0026] Figure 6 This is a schematic diagram showing an exploded view of the connection structure between the ball housing rod and the ball housing shell in this embodiment;

[0027] Figure 7 This is a schematic diagram of a connection structure between the limiting seat and the sliding block in this embodiment.

[0028] Reference numerals: First base plate 1, Second base plate 2, Electric push rod 3, L-shaped connecting plate 4, Partition 5, Hydraulic cylinder 6, Limiting block 7, Pressing block 8, Positioning seat 9, Slide groove 10, Slide rail 11, Baffle 12, First clamping plate 13, Barrier plate 14, Rubber pad 15, Second clamping plate 16, Mounting block 17, Ball socket housing 18, Pneumatic cylinder 19, Ball socket rod 20, Servo motor 21, Lead screw 22, Limiting seat 23, Sliding block 24, Frame 25, Connecting frame 26, Push block 27, Clamping plate 28, Square moving block 29. Detailed Implementation

[0029] 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.

[0030] Example: A fixture for ring gauge calibration, such as Figures 1-7As shown, the fixture includes a first substrate 1 and a second substrate 2. The first substrate 1 is fixedly connected to the second substrate 2. The first substrate 1 and the second substrate 2 are combined to form a T-shaped structure. Preferably, the lower surfaces of the first substrate 1 and the second substrate 2 can be made into rough surfaces to increase friction, thereby ensuring the overall anti-slip performance of the fixture. A partition 5 is installed in the middle of the upper surface of the second substrate 2. The partition 5 can separate the movable slide rails 11 on both sides to limit the minimum distance between the two sets of slide rails 11, thereby improving the safety of the fixture.

[0031] Furthermore, a height measuring component is installed on the upper surface of the partition 5 near the first substrate 1. The height measuring component can help measure the diameter when the ring gauge is placed perpendicular to the second substrate 2 and its thickness is tested, thereby improving the accuracy of the test through different detection methods.

[0032] like Figure 1 and Figure 2 As shown, a set of slide rails 11 are slidably installed on the upper surface of the second substrate 2 on the left and right sides of the partition 5. The two sets of slide rails 11 serve to limit the two sets of first clamping plates 13, limit the two sets of push blocks 27, and adapt to ring gauges of different specifications by adjusting the distance between the two sets of slide rails 11. At the same time, they can also ensure the stability of the movement of the push blocks 27 as they move towards the first clamping plates 13, so that the ring gauge can be clamped more stably. Therefore, when placed perpendicular to the second substrate 2, it is more convenient to test its diameter and ensure its clamping stability.

[0033] like Figure 1 and Figure 2 As shown, each set of slide rails 11 has a first clamping plate 13 installed on one side of the height measuring component on its upper surface for clamping the ring gauge when measuring its thickness. A second clamping plate 16 is rotatably installed on the outer side of each set of first clamping plates 13 to assist in clamping the ring gauge. The first clamping plates 13 are fixedly installed on the upper surface of the slide rails 11 and can move with the two sets of slide rails 11, thus clamping the ring gauge when it is placed perpendicular to the second base plate 2. Normally, the two sets of first clamping plates 13 are in contact with both ends of the ring gauge to achieve clamping and fixing. When the ring gauge is placed parallel to the second base plate 2, since the contact area of ​​the end faces of the first clamping plates 13 is small, the clamping area can be expanded by rotating the two sets of second clamping plates 16. The movement of the push block 27 ensures that the second clamping plates 16 are in contact with the outer arc surface of the ring gauge, thereby clamping the ring gauge more stably and further improving clamping stability.

[0034] like Figure 1 As shown, push blocks 27 for pushing the ring gauge are respectively installed on the side of the upper surface of the slide rail 11 away from the height measuring component; by setting the push blocks 27, the ring gauge can be pushed by the push blocks 27 when placed parallel to or perpendicular to the second base plate 2, so as to clamp and fix the ring gauge.

[0035] As a preferred option, such as Figure 1 , Figure 2 and Figure 4 As shown, two sets of electric actuators 3 are installed in the middle of the upper surface of the first substrate 1. Each set of electric actuators 3 has an L-shaped connecting plate 4 installed at its telescopic end. The electric actuators 3 are commercially available products. Any electric actuator 3 that can be used in this fixture can be purchased. Its installation and usage methods are publicly available technologies in this field. The technology is relatively mature and does not need to be optimized or innovated. Therefore, it will not be described in detail, nor will it be protected.

[0036] Two sets of electric linear actuators 3 are synchronously connected through a synchronization controller. The method of using two sets of electric linear actuators 3 synchronously through a synchronization controller is a common approach in the prior art. The synchronization controller runs a synchronization algorithm, such as electronic gears, electronic cams, or position synchronization control PVT / CSP. The synchronization controller calculates the independent motion commands required by each set of electric linear actuators 3, so that they move precisely according to the set relationship, such as moving at the same speed and in the same direction, maintaining a fixed height difference, or moving proportionally. The synchronization controller sends closed-loop control commands, including speed commands, torque commands, or position commands, to the drivers of the two sets of electric linear actuators 3.

[0037] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, the height measuring component includes a hydraulic cylinder 6 installed on the upper surface of the partition 5. The hydraulic cylinder 6 is a product that can be purchased directly from the market. Any hydraulic cylinder 6 that can be used by this fixture can be purchased. Its installation method and usage method are publicly available technologies in this field. The technology is relatively mature and does not need to be optimized or innovated. Therefore, it will not be described in detail, nor will it be protected.

[0038] A limit block 7 is installed at the telescopic top of the hydraulic cylinder 6, and a pressure block 8 is slidably installed at one end of the limit block 7. The limit block 7 is just a frame 25 for limiting the movement of the pressure block 8 and storing it. The pressure block 8 presses down and clamps the ring gauge set perpendicular to the second base plate 2. The clamping of the ring gauge is completed by the hydraulic cylinder 6, thereby ensuring the diameter of the auxiliary measurement ring gauge.

[0039] A positioning seat 9 is fixedly installed on one side of the hydraulic cylinder 6. The positioning seat 9 can limit the movement of the lead screw 22, ensuring the rotation of the lead screw 22, and at the same time preventing the lead screw 22 from affecting the hydraulic cylinder 6.

[0040] Furthermore, the second substrate 2 has several sets of sliding grooves 10 on both sides of the partition 5. Limiting rods are fixedly installed at the bottom of the two sets of slide rails 11 corresponding to the positions of each set of sliding grooves 10, and these limiting rods are slidably installed inside the sliding grooves 10. The function of the limiting rods installed at the bottom of the slide rails 11 is only to cooperate with the sliding grooves 10 to limit the movement of the slide rails 11. The slide rails 11 themselves move under the force of the electric push rod 3 and the L-shaped connecting plate 4, so the limiting rods do not require a complex structure; a simple rod body is sufficient, and therefore they are not specifically shown.

[0041] like Figure 3 As shown, each set of slide rails 11 has a baffle 12 installed inside. The baffle 12 installed inside the slide rail 11 is to limit the sliding block 24. When the slide rail 11 moves, it can drive the sliding block 24 to move synchronously, so as to ensure the stability of the push block 27 and make the sliding block 24 always cooperate with the slide rail 11.

[0042] Furthermore, such as Figure 5 and Figure 6 As shown, each of the two sets of first clamping plates 13 has a set of baffles 14 installed on its corresponding side to block the movement of the ring gauge. Rubber pads 15 are installed on one end of the push blocks 27 corresponding to the two sets of first clamping plates 13. The baffles 14 on the corresponding sides of the two sets of first clamping plates 13 are to prevent the ring gauge, perpendicular to the second base plate 2, from being pushed against the hydraulic cylinder 6 by the push blocks 27 when clamped by the first clamping plates 13, thus affecting the operation of the hydraulic cylinder 6. The main function of the baffles 14 is to limit the movement of the ring gauge. The rubber pads 15 are anti-slip rubber pads. While ensuring anti-slip performance, rubber pads with minimal or no deformation are selected, such as high-hardness rubber pads or composite material rubber pads.

[0043] A pneumatic cylinder 19 is rotatably mounted on the outer surface of the first clamping plate 13 away from the second clamping plate 16. A ball joint rod 20 is mounted on the telescopic end of the pneumatic cylinder 19. The pneumatic cylinder 19 is a product that can be directly purchased on the market. Any pneumatic cylinder 19 that can be used in this fixture can be selected and purchased. Its installation method and usage method are publicly disclosed technologies in this field. The technology is relatively mature and does not need to be optimized or innovated. Therefore, it will not be described in detail, nor will it be protected.

[0044] A mounting block 17 is installed in the middle of the outer surface of the second clamping plate 16. The mounting block 17 has a triangular structure, and several sets of ball socket shells 18 for limiting the ball socket rod 20 are embedded inside the mounting block 17. Each set of ball socket rods 20 is rotatably installed inside the ball socket shell 18. By operating a cylinder to push the ball socket rod 20 out, and because the second clamping plate 16 is rotatably installed, the ball socket rod 20 rotates inside the ball socket shell 18. This, in conjunction with the rotatable pneumatic cylinder 19, better ensures the position of the second clamping plate 16. In addition, the rotation angle of the pneumatic cylinder 19 is limited. The rotation component is limited by inserting a limit pin. Multiple positioning holes are set on the rotating component or adjustable blocks / limiting rods are set on the rotation path. When the rotation reaches a specific angle, the pin is inserted into the hole or the component hits the block to ensure that the angle of the pneumatic cylinder 19 is fixed, thereby providing sufficient support for the second clamping plate 16. Since the rubber pad 15 is mainly used to limit the ring gauge, the second clamping plate 16 itself plays an auxiliary role, increasing the force-bearing area and preventing slippage. It does not need to apply a lot of force and only plays an auxiliary role to ensure clamping stability.

[0045] As a preferred option, such as Figure 1 , Figure 2 and Figure 7 As shown, a servo motor 21 is mounted on the upper surface of the second substrate 2 at the end of the partition 5. A lead screw 22, which controls the movement of the push block 27, is keyed to the output end of the servo motor 21. The end of the lead screw 22 is rotatably mounted on the positioning seat 9. A square moving block 29 is threaded onto the outer arc surface of the lead screw 22. The servo motor 21 is a commercially available product; any servo motor 21 suitable for this fixture can be purchased. Its installation and usage methods are publicly available in the field and are relatively mature. Therefore, no optimization or innovation is necessary, and it will not be described in detail or protected. The method of controlling the movement of the object by the servo motor 21 controlling the lead screw 22 is a well-known and common technique among those skilled in the art. The square moving block 29 is chosen primarily to ensure that one side of it fits against the partition 5 to limit rotation. Simultaneously, the square moving block 29 allows for better connection between the two sets of limiting seats 23, providing a limiting connection between them.

[0046] A set of limiting seats 23 are installed on the left and right sides of the square movable block 29. A set of sliding blocks 24 are movably installed on the outer side of each set of limiting seats 23. Each set of sliding blocks 24 is slidably engaged with the slide rail 11 and the baffle 12. Both sets of limiting seats 23 have a retractable connecting rod installed inside. The retraction method is relatively simple. A hole is opened inside the limiting seat 23, and the retractable rod moves in the hole and cannot be pulled out. The end of the retractable rod is connected to the sliding block 24 to ensure the reset of the sliding block 24.

[0047] Furthermore, a frame 25 is installed on the upper surface of the square movable block 29 to separate and protect the two sets of push blocks 27. Two sets of connecting frames 26 for connecting the corresponding side push blocks 27 are symmetrically installed inside the frame 25. The frame 25 houses the connecting frames 26, which can connect the push blocks 27 on both sides, assisting the push blocks 27 in moving along the slide rail 11. The connecting frame 26 includes a first connecting part and a second connecting part that are hinged to each other. The first connecting part is hinged to the frame 25, and the second connecting part is hinged to the push block 27. The connecting frame 26 has two states: extended and retracted.

[0048] Each set of push blocks 27 is equipped with a clamping plate 28 on one side of the first clamping plate 13. The two sets of clamping plates 28 are installed in an open manner facing each other, and the end face of the clamping plate 28 is an inclined surface. The clamping plate 28 can better fit the outer arc surface of the ring gauge, avoid the problem of the ring gauge coming off, and improve its clamping stability.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fixture for ring gauge calibration comprising a first base plate (1) and a second base plate (2), characterized in that, The first substrate (1) is fixedly connected to the second substrate (2). A partition (5) is installed in the middle of the upper surface of the second substrate (2). A height measuring component is installed on the side of the upper surface of the partition (5) close to the first substrate (1). A set of slide rails (11) are slidably installed on the upper surface of the second substrate (2) on the left and right sides of the partition (5). A first clamping plate (13) for clamping the ring gauge is installed on the upper surface of each set of slide rails (11) on the side of the height measuring component. A second clamping plate (16) for assisting in clamping the ring gauge is rotatably installed on the outer side of each set of first clamping plates (13). A push block (27) for pushing the ring gauge is installed on the side of the upper surface of the slide rail (11) away from the height measuring component.

2. The fixture for ring gauge calibration according to claim 1, characterized in that, Two sets of electric push rods (3) are installed in the middle of the upper surface of the first substrate (1), and each set of electric push rods (3) has an L-shaped connecting plate (4) installed at the telescopic end.

3. The fixture for ring gauge calibration according to claim 1, characterized in that, The height measuring component includes a hydraulic cylinder (6) installed on the upper surface of the partition (5). A limit block (7) is installed at the telescopic top of the hydraulic cylinder (6). A pressure block (8) is slidably installed at one end of the limit block (7). A positioning seat (9) is installed on one side of the hydraulic cylinder (6).

4. The fixture for ring gauge calibration according to claim 3, characterized in that, A servo motor (21) is installed on the upper surface of the second substrate (2) at the end of the partition (5). A lead screw (22) is keyed to the output end of the servo motor (21). The end of the lead screw (22) is rotatably installed on the positioning seat (9). A square moving block (29) is threaded on the outer arc surface of the lead screw (22). A set of limiting seats (23) is installed on the left and right sides of the square moving block (29). A set of sliding blocks (24) is movably installed on the outer side of each set of limiting seats (23). Each set of sliding blocks (24) is slidably engaged with the slide rail (11) and the baffle (12).

5. A fixture for ring gauge calibration according to claim 4, characterized in that, A frame (25) is mounted on the upper surface of the square movable block (29), and two sets of connecting brackets (26) for connecting the corresponding side push blocks (27) are symmetrically installed inside the frame (25).

6. The fixture for ring gauge calibration according to claim 1, characterized in that, A baffle (12) is installed inside the slide rail (11).

7. A fixture for ring gauge calibration according to claim 1, characterized in that, Each of the two sets of first clamping plates (13) has a set of blocking plates (14) installed on the corresponding side to block the movement of the ring gauge, and a rubber pad (15) is installed on one end of the push block (27) corresponding to the two sets of first clamping plates (13).

8. The fixture for ring gauge calibration according to claim 1, characterized in that, A pneumatic cylinder (19) is rotatably mounted on the outer surface of the first clamping plate (13) away from the second clamping plate (16). A ball socket rod (20) is mounted on the telescopic end of the pneumatic cylinder (19). An mounting block (17) is mounted in the middle of the outer surface of the second clamping plate (16). Several sets of ball socket shells (18) for limiting the ball socket rod (20) are embedded in the mounting block (17). Each set of ball socket rods (20) is rotatably mounted inside the ball socket shell (18).

9. A fixture for ring gauge calibration according to claim 1, characterized in that, Each set of push blocks (27) has a clamping plate (28) installed on one side of the first clamping plate (13), and the two sets of clamping plates (28) are installed opposite each other in an open state.

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