Annular workpiece tool
By designing a radially adjustable cylindrical body and an elastic structure for the inspection of annular workpieces, the inherent problem of existing inspection fixtures being unable to handle different materials is solved. By designing an annular workpiece inspection device, the inherent problem of annular workpiece inspection fixtures being unable to handle different materials is solved, thus realizing the applicability and precision inspection effect of inspection fixtures for different materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI LONGWEI PLASTIC & HARDWARE PROD CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-14
AI Technical Summary
Existing ring-shaped workpiece inspection fixtures cannot effectively fix ring-shaped workpieces with different inner diameters, resulting in poor applicability.
A ring-shaped workpiece fixture including a base plate, a vertical plate, and a fixing component is designed. The fixing component consists of a cylinder, a one-way screw, a slider, and a pressing plate. The radially adjustable pressing plate enables close contact with workpieces of different inner diameters. Combined with a floating structure composed of springs, it ensures adaptive and precise contact between the measuring instrument and the outer circumference of the workpiece.
It enables stable fixing and precise inspection of ring-shaped workpieces with different inner diameters, enhances the applicability of the inspection fixture, and ensures a constant measuring contact force during the inspection process, adapting to the dimensional tolerances and clamping deviations of the workpiece.
Smart Images
Figure CN224116046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ring workpiece inspection fixture technology, specifically a ring workpiece fixture. Background Technology
[0002] After machining, ring-shaped workpieces usually need to be inspected for roundness and parallelism of the circumference. Inspection fixtures are required during the inspection of ring-shaped workpieces.
[0003] In existing testing fixtures, when fixing a ring-shaped workpiece, the workpiece is placed on a fixed post so that its inner circumferential surface abuts against the outer surface of the fixed post. Then, the operator holds a measuring gauge to inspect the outer circumferential surface of the workpiece. However, the fixed post of the existing testing fixture can only fix ring-shaped workpieces with an inner diameter that matches the inner diameter. When the inner diameter of the ring-shaped workpiece is larger than the diameter of the fixed post, it cannot fix the workpiece, resulting in poor applicability. Utility Model Content
[0004] The purpose of this invention is to provide a ring-shaped workpiece fixture that solves the problem that existing ring-shaped workpiece inspection fixtures cannot effectively fix ring-shaped workpieces with different inner diameters.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a ring-shaped workpiece fixture, comprising a base plate, a vertical plate mounted on the upper surface of the base plate, a fixing component provided on one side of the vertical plate, the fixing component comprising a cylinder, an installation groove formed on the outer surface of the vertical plate, one end of the cylinder being fitted into the installation groove, a through hole formed on the outer surface of the cylinder, a one-way screw rotatably connected inside the through hole, one end of the one-way screw penetrating the vertical plate and fitted with a knob, a slider threadedly connected to the outer surface of the one-way screw, and an extrusion plate provided on the outer surface of the cylinder.
[0007] Preferably, a first connecting plate is hinged to the outer surface of the cylinder, and a second connecting plate is hinged to the outer surface of the slider. The other ends of the first connecting plate and the second connecting plate are both hinged to the outer surface of the extrusion plate.
[0008] Preferably, one end of the extrusion plate is provided with an arc-shaped surface, and the outer surface of the arc-shaped surface is provided with anti-slip texture.
[0009] Preferably, a limiting hole is formed on the upper surface of the vertical plate, one end of the limiting hole extends into the interior of the cylinder, a limiting rod is interference-fitted into the interior of the limiting hole, and a pull block is provided on the upper surface of the limiting rod.
[0010] Preferably, the upper surface of the base plate is provided with a sliding groove, a connecting block is slidably connected inside the sliding groove, the upper surface of the connecting block is provided with a groove, a mounting seat is slidably connected inside the groove, a spring is installed on the lower surface of the mounting seat, and the other end of the spring is installed at the bottom of the groove.
[0011] Preferably, the upper surface of the base plate is provided with a plurality of mounting holes, the outer surface of the connecting block is provided with an ear block, the upper surface of the ear block is provided with a fixing bolt, the fixing bolt is threadedly connected to any one of the mounting holes, the inner surface of the groove is provided with an auxiliary groove, the outer surface of the mounting base is provided with an auxiliary block, and the auxiliary block is slidably connected inside the auxiliary groove.
[0012] This utility model has the following beneficial effects:
[0013] (1) This utility model solves the inherent defect that the fixed column and the inner diameter of the ring workpiece must be strictly matched in the traditional testing fixture by setting a fixed component. Through the radially adjustable extrusion plate, when the inner diameter of the ring workpiece is larger than the reference diameter of the cylinder, the rotating one-way screw can drive the slider to move axially, which is converted into the radial expansion motion of the extrusion plate through the hinged connecting rod, so that the arc surface always fits tightly against the inner wall of the ring workpiece, increasing the applicability of the testing fixture to ring workpieces with different inner diameters.
[0014] (2) The mounting base and connecting block of this utility model have a floating structure composed of springs, which realizes the adaptive precision fit between the probe of the test gauge and the outer circumference of the ring workpiece. When the ring workpiece has dimensional tolerances or slight clamping deviations, the elastic deformation of the spring automatically compensates for the vertical displacement of the mounting base, so that the test gauge continuously applies a constant measuring contact force.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the fixing component and vertical plate structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the fixing component structure of this utility model;
[0020] Figure 4 This is a cross-sectional view of the connecting block structure of this utility model;
[0021] The attached diagram lists the components represented by each number as follows:
[0022] In the diagram: base plate 1, slide groove 101, mounting hole 102, vertical plate 2, fixing component 3, cylinder 301, one-way screw 302, knob 303, slider 304, extrusion plate 305, first connecting plate 306, second connecting plate 307, arc surface 308, limit rod 4, pull block 5, connecting block 6, groove 601, ear block 602, auxiliary groove 603, mounting base 7, auxiliary block 701, spring 8, fixing bolt 9. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0024] Please see Figures 1-4 As shown, this utility model is a ring-shaped workpiece fixture, including a base plate 1, a vertical plate 2 mounted on the upper surface of the base plate 1, a fixing component 3 provided on one side of the vertical plate 2, the fixing component 3 including a cylinder 301, an installation groove opened on the outer surface of the vertical plate 2, one end of the cylinder 301 being fitted into the installation groove, a through hole opened on the outer surface of the cylinder 301, a one-way screw 302 rotatably connected inside the through hole, one end of the one-way screw 302 penetrating the vertical plate 2 and mounted with a knob 303, a slider 304 threadedly connected to the outer surface of the one-way screw 302, and a pressing plate 3 provided on the outer surface of the cylinder 301. 05. The one-way screw 302 is connected to the vertical plate 2 by a limiting ring. Rotating the knob 303 drives the one-way screw 302 to rotate. The fixed component 3 solves the inherent defect that the fixed column and the inner diameter of the ring workpiece must be strictly matched in the traditional testing fixture. With the radially adjustable extrusion plate 305, when the inner diameter of the ring workpiece is larger than the reference diameter of the cylinder 301, rotating the one-way screw 302 can drive the slider 304 to move axially, so that the extrusion plate 305 expands radially and keeps the extrusion plate 305 in close contact with the inner wall of the ring workpiece, increasing the applicability of the testing fixture to ring workpieces with different inner diameters.
[0025] like Figure 2 , Figure 3As shown, a first connecting plate 306 is hinged to the outer surface of the cylinder 301, and a second connecting plate 307 is hinged to the outer surface of the slider 304. The other ends of the first connecting plate 306 and the second connecting plate 307 are both hinged to the outer surface of the extrusion plate 305. One end of the extrusion plate 305 is provided with an arc-shaped surface 308, and the outer surface of the arc-shaped surface 308 is provided with anti-slip texture. The anti-slip texture can increase the friction between the extrusion plate 305 and the inner wall of the annular workpiece.
[0026] like Figure 1 , Figure 2 As shown, a limiting hole is provided on the upper surface of the vertical plate 2. One end of the limiting hole extends into the interior of the cylinder 301. A limiting rod 4 is interference-fitted into the interior of the limiting hole. A pull block 5 is provided on the upper surface of the limiting rod 4.
[0027] like Figure 1 , Figure 4 As shown, a groove 101 is formed on the upper surface of the base plate 1. A connecting block 6 is slidably connected inside the groove 101. A groove 601 is formed on the upper surface of the connecting block 6. A mounting base 7 is slidably connected inside the groove 601. A spring 8 is mounted on the lower surface of the mounting base 7. The other end of the spring 8 is mounted on the inner bottom of the groove 601. Several mounting holes 102 are also formed on the upper surface of the base plate 1. Ears 602 are provided on the outer surface of the connecting block 6. Fixing bolts 9 are provided on the upper surface of the ears 602. The fixing bolts 9 are threadedly connected to any one of the mounting holes 102. The groove 601... The inner surface of the mounting base 7 is provided with an auxiliary groove 603, and the outer surface of the mounting base 7 is provided with an auxiliary block 701. The auxiliary block 701 is slidably connected inside the auxiliary groove 603. A test gauge is installed on the upper surface of the mounting base 7 for testing the outer circumferential surface of the annular workpiece. The mounting base 7 and the connecting block 6 are connected by a floating structure formed by springs 8, which realizes the adaptive precision fit between the probe of the test gauge and the outer circumferential surface of the annular workpiece. When the annular workpiece has dimensional tolerances or a slight clamping deviation, the elastic deformation of the spring 8 automatically compensates for the vertical displacement of the mounting base 7, so that the test gauge continuously applies a constant measuring contact force.
[0028] In use, first place the annular workpiece on the outer surface of the extrusion plate 305, rotate the knob 303 to drive the one-way screw 302 to rotate axially, and drive the slider 304 to move outward along the axis of the one-way screw 302. At this time, the slider 304 pushes the extrusion plate 305 to expand radially through the second connecting plate 307, so that the arc surface 308 tightly presses against the inner wall of the annular workpiece to complete the fixation. Then, push the connecting block 6 to move horizontally along the slide groove 101, so that the measuring instrument on the mounting base 7 is positioned directly below the annular workpiece. Tighten the fixing bolt 9 to lock the position of the connecting block 6. The spring 8 between the mounting base 7 and the connecting block 6 floats to automatically compensate for dimensional tolerances, ensuring that the measuring instrument probe is in constant pressure against the outer circumferential surface of the annular workpiece. If it is necessary to change the measurement point during the detection process, pull up the pull block 5 to make the limit rod 4 disengage from the limit hole, rotate the extrusion plate 305 to drive the annular workpiece to rotate axially, so as to realize continuous detection of the outer circumferential surface of the annular workpiece. After the detection is completed, reverse the knob 303 to release the constraint of the extrusion plate 305, and the annular workpiece can be removed to complete the detection operation.
[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A ring-shaped workpiece fixture, comprising a base plate (1), wherein a vertical plate (2) is mounted on the upper surface of the base plate (1), characterized in that: A fixing component (3) is provided on one side of the vertical plate (2); The fixing component (3) includes a cylinder (301), the outer surface of the vertical plate (2) is provided with an installation groove, one end of the cylinder (301) is fitted into the inside of the installation groove, the outer surface of the cylinder (301) is provided with a through hole, and a one-way screw (302) is rotatably connected inside the through hole. One end of the one-way screw (302) passes through the vertical plate (2) and is equipped with a knob (303). The outer surface of the one-way screw (302) is threaded with a slider (304). The outer surface of the cylinder (301) is provided with an extrusion plate (305).
2. The ring-shaped workpiece fixture according to claim 1, characterized in that: The outer surface of the cylinder (301) is hinged to a first connecting plate (306), and the outer surface of the slider (304) is hinged to a second connecting plate (307). The other ends of the first connecting plate (306) and the second connecting plate (307) are both hinged to the outer surface of the extrusion plate (305).
3. The ring-shaped workpiece fixture according to claim 2, characterized in that: One end of the extrusion plate (305) is provided with an arc-shaped surface (308), and the outer surface of the arc-shaped surface (308) is provided with anti-slip texture.
4. The ring-shaped workpiece fixture according to claim 1, characterized in that: The upper surface of the vertical plate (2) has a limiting hole, one end of which extends into the interior of the cylinder (301). A limiting rod (4) is installed inside the limiting hole with an interference fit. A pull block (5) is provided on the upper surface of the limiting rod (4).
5. The ring-shaped workpiece fixture according to claim 1, characterized in that: The upper surface of the base plate (1) is provided with a sliding groove (101), and a connecting block (6) is slidably connected inside the sliding groove (101). The upper surface of the connecting block (6) is provided with a groove (601), and a mounting seat (7) is slidably connected inside the groove (601). A spring (8) is installed on the lower surface of the mounting seat (7), and the other end of the spring (8) is installed at the bottom of the groove (601).
6. The ring-shaped workpiece fixture according to claim 5, characterized in that: The upper surface of the base plate (1) is provided with a number of mounting holes (102), the outer surface of the connecting block (6) is provided with an ear block (602), the upper surface of the ear block (602) is provided with a fixing bolt (9), and the fixing bolt (9) is threadedly connected to any one of the mounting holes (102). The inner surface of the groove (601) is provided with an auxiliary groove (603), and the outer surface of the mounting base (7) is provided with an auxiliary block (701). The auxiliary block (701) is slidably connected inside the auxiliary groove (603).