A thin-walled disc flatness calibration fixture

Abstract

The utility model discloses a kind of thin-wall disc class flatness calibration fixture, including support plate, the left and right sides of support plate are all fixedly connected with a telescopic frame, the bottom of a telescopic frame is fixedly connected with bottom plate, the bottom of support plate is fixedly connected with several sleeves, the inside vertical sliding connection of sleeve has telescopic column, the top of telescopic column penetrates the surface of support plate, the bottom of telescopic column penetrates the surface of bottom plate;The utility model is driven slowly by clamping component workpiece, contact telescopic column and drive telescopic column downward, by observing the difference of the descending amplitude of each telescopic column bottom, the flatness deviation position and degree of part surface can be judged directly and quickly;Meanwhile, all telescopic columns contacting with parts can provide real-time adaptive support, effectively avoid the damage of parts caused by traditional fixed support local suspension, realize accurate detection while ensuring support stability, significantly improve subsequent calibration processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of calibration fixture technology, specifically a thin-walled disk-type flatness calibration fixture. Background Technology

[0002] In aerospace, automotive manufacturing, and precision instrumentation, thin-walled disk-shaped parts are key components for achieving efficient equipment operation due to their advantages such as lightweight and compact structure. The flatness accuracy of these parts directly affects assembly clearance control, transmission stability, and sealing performance. Therefore, after machining, flatness calibration using specialized fixtures is necessary to correct machining deformation and ensure that design requirements are met.

[0003] Existing calibration fixtures, when clamping and calibrating thin-walled disc-shaped parts, include support structures beneath the parts. However, these supports are often rigid components with a fixed height. When the parts exhibit flatness errors such as warping or dents due to machining, the fixed supports cannot adapt to the unevenness of the part's surface, easily resulting in localized suspension. This situation leads to secondary deformation, or even cracks and fractures, in the suspended areas during subsequent calibration or machining due to the lack of effective support. This not only affects the calibration accuracy of the parts but also causes them to be scrapped, increasing production costs. Therefore, a new technical solution is proposed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to provide a thin-walled disk-type flatness calibration fixture, which solves the problem that the support structure of the existing calibration fixtures mentioned in the background technology is mostly a rigid component with a fixed height. When the part has flatness errors such as warping or dents due to processing, the fixed support cannot adapt to the undulations of the part surface, and it is easy for local support to be suspended, resulting in a lack of bottom force support during processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thin-walled disc-type flatness calibration fixture, comprising a support plate, wherein a telescopic frame is fixedly connected to both the left and right sides of the support plate, the bottom end of the telescopic frame is fixedly connected to a base plate, and a plurality of sleeves are fixedly connected to the bottom of the support plate, wherein a telescopic column is vertically slidably connected to the inner side of the sleeve, the top end of the telescopic column penetrates the surface of the support plate, and the bottom end of the telescopic column penetrates the surface of the base plate.

[0006] In this technical solution, after the clamping component completes clamping of the workpiece, it slowly descends, contacts the telescopic column, and drives the telescopic column downward. By observing the difference in the descent amplitude of the bottom of each telescopic column, the location and degree of flatness deviation on the surface of the part can be intuitively and quickly determined. At the same time, all telescopic columns in contact with the part can provide adaptive support in real time, effectively avoiding the damage to the part caused by the partial suspension of traditional fixed support. While achieving accurate detection, it ensures support stability and significantly improves the efficiency of subsequent calibration and processing.

[0007] Preferably, a return spring is fixedly connected between the protrusion on the side wall of the telescopic column inside the sleeve and the bottom plate directly below it, and an electric push rod is fixedly connected between the upper and lower inner walls of the first telescopic frame.

[0008] Preferably, the support plate at the through-point of the telescopic column is provided with an inner groove, and the side wall of the support plate is provided with a plurality of storage slots. Each storage slot is connected to a plurality of inner grooves on the path. A pull rod is slidably connected to the inner side of the storage slot. One end of the pull rod located inside the storage slot is connected to the inner wall of the storage slot by a spring. The other end of the pull rod located outside the storage slot is fixedly connected to a synchronizing rod.

[0009] Preferably, a crossbar is fixedly connected to the side wall of the pull rod, the crossbar is located inside the inner groove, and a locking block is fixedly connected to the side of the crossbar facing the telescopic column. The surface of the telescopic column inside the inner groove is provided with several annular locking grooves.

[0010] Preferably, a second telescopic frame is fixedly connected to the side wall of the support plate, a second electric push rod is fixedly connected between the upper and lower inner walls of the second telescopic frame, an adjustment frame is fixedly connected to the top of the second telescopic frame, a bidirectional lead screw is rotatably connected to the inner side of the adjustment frame, two threaded sleeves penetrate the surface of the bidirectional lead screw, the threaded sleeves are threadedly connected to the bidirectional lead screw, and a right-angle block is fixedly connected to the outer wall of the threaded sleeves.

[0011] Preferably, the side wall of the right-angle block is provided with a rectangular groove, and a sliding rod passes through the top of the right-angle block directly above the rectangular groove. The bottom end of the sliding rod is fixedly connected to the clamping block, and a spring is sleeved on the surface of the sliding rod above the right-angle block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses several neatly arranged telescopic columns on a support plate. After the clamping assembly above clamps the workpiece, it slowly descends, contacts the telescopic columns, and drives the telescopic columns downward. By observing the difference in the descent amplitude of the bottom of each telescopic column, the location and degree of flatness deviation on the surface of the part can be intuitively and quickly determined. At the same time, all telescopic columns in contact with the part can provide adaptive support in real time, effectively avoiding the damage to the part caused by partial suspension of traditional fixed supports. It achieves accurate detection while ensuring support stability, and significantly improves the efficiency of subsequent calibration and processing.

[0014] 2. This utility model can adjust the height of the base plate by using a telescopic frame and an electric push rod. Since the lower end of the return spring is fixed to the surface of the base plate, the movement of the base plate can change the initial compression of the return spring, thereby changing the force required to squeeze the telescopic column. This adapts to workpieces of different materials and thicknesses, effectively avoiding the problem of deformation caused by excessive support pressure, and greatly expanding the applicability of the fixture. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is an overall view of the present invention;

[0017] Figure 2 This is a schematic diagram of the clamping block structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the telescopic column of this utility model;

[0019] Figure 4 This is a diagram showing the positional relationship between the inner groove and the storage groove of this utility model;

[0020] Figure 5 This is a diagram showing the positional relationship between the card block and the card slot in this utility model.

[0021] In the diagram: 1. Support plate; 101. Inner groove; 102. Storage groove; 2. Base plate; 3. Telescopic frame No. 1; 301. Electric actuator No. 1; 4. Telescopic column; 401. Slot; 5. Return spring; 6. Sleeve; 7. Pull rod; 701. Synchronizing rod; 8. Crossbar; 801. Locking block; 9. Telescopic frame No. 2; 10. Electric actuator No. 2; 11. Adjustment frame; 12. Two-way lead screw; 121. Threaded sleeve; 13. Right-angle block; 131. Rectangular groove; 14. Slide rod; 15. Clamping block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0023] A thin-walled disk-type flatness calibration fixture, see [link / reference] Figures 1 to 5 The system includes a support plate 1, with a telescopic frame 3 fixedly connected to both the left and right sides of the support plate 1. The bottom end of the telescopic frame 3 is fixedly connected to the base plate 2. Several sleeves 6 are fixedly connected to the bottom of the support plate 1. Telescopic columns 4 are vertically slidably connected to the inner side of the sleeves 6. The top end of the telescopic column 4 penetrates the surface of the support plate 1, and the bottom end of the telescopic column 4 penetrates the surface of the base plate 2. A return spring 5 is fixedly connected between the protrusion of the side wall of the telescopic column 4 on the inner side of the sleeve 6 and the base plate 2 directly below. An electric push rod 301 is fixedly connected between the upper and lower inner walls of the telescopic frame 3.

[0024] In the above technical solution, the lower end of the return spring 5 is fixed to the surface of the base plate 2. The movement of the base plate 2 will synchronously stretch or compress the return spring 5, changing the initial compression of the return spring 5, thereby changing the force required to squeeze the telescopic column 4, adapting to workpieces of different materials and thicknesses, effectively avoiding the problem of deformation caused by excessive support pressure, and greatly expanding the applicability of the fixture. Then, the upper clamping assembly slowly descends with the workpiece, and the surface of the workpiece squeezes the telescopic column 4, causing it to slide down along the inner wall of the sleeve 6. By observing the difference in the descent amplitude of the bottom of each telescopic column 4, the location and degree of flatness deviation of the part surface can be intuitively and quickly judged; at the same time, all telescopic columns 4 in contact with the part can provide adaptive support in real time, effectively avoiding the damage to the part caused by the partial suspension of traditional fixed support, ensuring support stability while achieving accurate detection, and significantly improving the efficiency of subsequent calibration and processing.

[0025] Specifically, such as Figure 4 and Figure 5 As shown, the support plate 1 at the through-position of the telescopic column 4 has an inner groove 101 inside, and the side wall of the support plate 1 has several storage slots 102. Each storage slot 102 is connected to several inner grooves 101 on the path. A pull rod 7 is slidably connected to the inner side of the storage slot 102. One end of the pull rod 7 located inside the storage slot 102 is connected to the inner wall of the storage slot 102 by a spring. The other end of the pull rod 7 located outside the storage slot 102 is fixedly connected to the synchronizing rod 701. A crossbar 8 is fixedly connected to the side wall of the pull rod 7. The crossbar 8 is located inside the inner groove 101. A locking block 801 is fixedly connected to the side of the crossbar 8 facing the telescopic column 4. Several annular locking slots 401 are provided on the surface of the telescopic column 4 inside the inner groove 101. Before pressing the telescopic column 4 downwards, first pull the synchronizing rod 701 to temporarily disengage the crossbar 8 and the locking block 801 on the surface of the pull rod 7 from the slot 401. After the pressing is completed, release the synchronizing rod 701 so that the locking block 801 can be reinserted into the slot 401, thereby fixing the height of the telescopic column 4 and providing stable support from below.

[0026] In the above technical solution, the telescopic column 4 can be locked and unlocked by pulling and releasing the synchronizing rod 701. The operation is simple and does not require special tools, reducing the difficulty of operation. The design of several annular slots 401 on the surface of the telescopic column 4 allows for flexible selection of the locking position of the locking block 801 according to the surface undulation of the part, ensuring stable support for parts with different flatness deviations, avoiding displacement of the telescopic column 4 during calibration, and ensuring calibration accuracy.

[0027] Furthermore, such as Figure 2 As shown, a second telescopic frame 9 is fixedly connected to the side wall of the support plate 1. A second electric push rod 10 is fixedly connected between the upper and lower inner walls of the second telescopic frame 9. An adjustment frame 11 is fixedly connected to the top of the second telescopic frame 9. A bidirectional lead screw 12 is rotatably connected to the inner side of the adjustment frame 11. Two threaded sleeves 121 penetrate the surface of the bidirectional lead screw 12. The threaded sleeves 121 are threadedly connected to the bidirectional lead screw 12. A right-angle block 13 is fixedly connected to the outer wall of the threaded sleeves 121.

[0028] In the above technical solution, rotating the bidirectional lead screw 12 will cause the two threaded sleeves 121 to slide towards or away from each other along the inner wall of the adjusting frame 11 because the threads on both sides of the bidirectional lead screw 12 have opposite directions. This will push the right-angle block 13 closer to or away from the part until the right-angle block 13 fits against the side wall of the part, thus completing the lateral positioning of the part.

[0029] It is worth noting that, such as Figure 2 As shown, the side wall of the right-angle block 13 has a rectangular groove 131. A slide rod 14 passes through the top of the right-angle block 13 directly above the rectangular groove 131. The bottom end of the slide rod 14 is fixedly connected to the clamping block 15. A spring is sleeved on the surface of the slide rod 14 above the right-angle block 13. When the workpiece is placed between the two right-angle blocks 13, the slide rod 14 moves the clamping block 15 upward under the action of the spring, thereby clamping the workpiece and placing the edge of the workpiece into the rectangular groove 131 of the right-angle block 13. This allows for lateral fixation, ensuring the workpiece remains stable in both the front-back and left-right directions. Combined with the support of the telescopic column 4 below, this ensures the stability of the calibration operation.

[0030] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

Claims

1. A thin-walled disk-type flatness calibration fixture, comprising a support plate (1), characterized in that: A telescopic frame (3) is fixedly connected to both the left and right sides of the support plate (1). The bottom end of the telescopic frame (3) is fixedly connected to the base plate (2). Several sleeves (6) are fixedly connected to the bottom of the support plate (1). A telescopic column (4) is vertically slidably connected to the inner side of the sleeve (6). The top end of the telescopic column (4) penetrates the surface of the support plate (1), and the bottom end of the telescopic column (4) penetrates the surface of the base plate (2).

2. The thin-walled disk-type flatness calibration fixture according to claim 1, characterized in that: A return spring (5) is fixedly connected between the protrusion on the side wall of the telescopic column (4) inside the sleeve (6) and the bottom plate (2) directly below it, and a first electric push rod (301) is fixedly connected between the upper and lower inner walls of the first telescopic frame (3).

3. The thin-walled disk-type flatness calibration fixture according to claim 1, characterized in that: The support plate (1) through which the telescopic column (4) passes is provided with an inner groove (101). The side wall of the support plate (1) is provided with several storage slots (102). Each storage slot (102) is connected to several inner grooves (101) on the path. A pull rod (7) is slidably connected to the inner side of the storage slot (102). One end of the pull rod (7) located inside the storage slot (102) is connected to the inner wall of the storage slot (102) by a spring. The other end of the pull rod (7) located outside the storage slot (102) is fixedly connected to the synchronizing rod (701).

4. The thin-walled disk-type flatness calibration fixture according to claim 3, characterized in that: A crossbar (8) is fixedly connected to the side wall of the pull rod (7). The crossbar (8) is located inside the inner groove (101). A locking block (801) is fixedly connected to the side of the crossbar (8) facing the telescopic column (4). Several annular locking grooves (401) are provided on the surface of the telescopic column (4) inside the inner groove (101).

5. A thin-walled disk-type flatness calibration fixture according to claim 1, characterized in that: The support plate (1) is fixedly connected to the side wall of the second telescopic frame (9), and the upper and lower inner walls of the second telescopic frame (9) are fixedly connected to the second electric push rod (10). The top of the second telescopic frame (9) is fixedly connected to the adjustment frame (11), and the inner side of the adjustment frame (11) is rotatably connected to the double-acting screw (12). The surface of the double-acting screw (12) has two threaded sleeves (121) through it. The threaded sleeves (121) are threadedly connected to the double-acting screw (12), and the outer wall of the threaded sleeves (121) is fixedly connected to the right-angle block (13).

6. A thin-walled disk-type flatness calibration fixture according to claim 5, characterized in that: The right-angle block (13) has a rectangular groove (131) on its side wall. A sliding rod (14) passes through the top of the right-angle block (13) directly above the rectangular groove (131). The bottom end of the sliding rod (14) is fixedly connected to the clamping block (15). A spring is sleeved on the surface of the sliding rod (14) above the right-angle block (13).

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