Hardness measurement positioning jig
By designing a combination structure of limiting plates and positioning components, the problem of unstable hardness measurement of rubber parts was solved, and the stability and accuracy of hardness measurement were achieved.
Patent Information
- Application Number
- CN202422555649.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Hardness measurement of rubber parts is difficult to perform stably. The support devices on the market cannot ensure that the indenter of the hardness tester is pressed vertically and evenly, resulting in unstable measurement.
A hardness measurement positioning fixture was designed, including a limiting plate and a positioning component. The limiting sector of the limiting plate and the eccentric circular hole cooperate to ensure the stable placement of the positioning component. A positioning groove and a platform are set on the positioning component to support the rubber component and provide a stable hardness measurement environment.
This method enables stable positioning and hardness measurement of rubber parts, ensuring that the indenter of the hardness tester can be pressed in evenly, thus improving the stability and accuracy of the measurement.
Smart Images
Figure CN223470874U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of measurement positioning, especially relates to a hardness measurement positioning jig. BACKGROUND
[0002] The rubber part needs to be detected in a variety of ways before leaving the factory to ensure its quality, and hardness detection is one of the important indicators to measure whether the rubber part meets the requirements.
[0003] But because the rubber material usually has high elasticity and softness, it makes it difficult to measure its hardness directly without proper support. At the same time, the supporting rubber parts on the market are difficult to ensure the stability of the measurement in the specific production process, and cannot ensure that the pressure needle of the durometer can be vertically and uniformly pressed into the current rubber part. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming the above-mentioned defects, and provides a hardness measurement positioning jig, which ensures the stable placement of the positioning part through the limiting sheet, and opens the positioning groove, positioning table surface and round corner on the positioning part to ensure the stable placement of the rubber part and provide protection for the hardness measurement of the rubber part.
[0005] Technical scheme: In order to achieve the above-mentioned purpose, the utility model provides a hardness measurement positioning jig, which comprises a placing rack, a limiting sheet and a positioning part; the placing rack comprises a placing plate; the placing plate is provided with a placing groove; the limiting sheet is arranged on the placing plate; the limiting sheet is provided with an eccentric hole; the positioning part passes through the eccentric hole and is arranged in the placing groove on the placing plate; the periphery of the placing groove is provided with a positioning chamfer for positioning the positioning part; the outer edge of the limiting sheet is provided with a first limiting sector, a second limiting sector and a third limiting sector; the first limiting sector, the second limiting sector and the third limiting sector are used to determine the position of the limiting sheet on the placing plate, so as to ensure that the limiting sheet limits the positioning part. The plurality of limiting sectors ensure the determination of the position of the limiting sheet on the placing table, and cooperate with the eccentric hole to limit the positioning part.
[0006] Further, two ends of the first limiting sector are a first limiting sector A end and a first limiting sector B end respectively; two ends of the second limiting sector are a second limiting sector A end and a second limiting sector B end respectively; two ends of the third limiting sector are a third limiting sector A end and a third limiting sector B end respectively; the first limiting sector A end is parallel to the second limiting sector A end, and limiting is performed in cooperation with the limiting sheet outer edge between the two; the first limiting sector B end is parallel to the third limiting sector B end, and limiting is performed in cooperation with the limiting sheet outer edge between the two; the second limiting sector B end is parallel to the third limiting sector A end, and limiting is performed in cooperation with the limiting sheet outer edge between the two; the limiting sector port cooperates with the limiting sheet outer edge to ensure the limiting effect of the limiting sheet, and provides protection for the positioning of the rubber piece.
[0007] Further, a through hole is arranged in the middle of the positioning member; the through hole is cylindrical; a first positioning table surface is arranged beside the upper end surface of the through hole; a second positioning table surface is arranged on the outer edge of the upper end surface of the positioning member; and a positioning groove is arranged between the first positioning table surface and the second positioning table surface. The first positioning table surface, the second positioning table surface and the positioning groove provide positioning support for the placement of the rubber piece.
[0008] Further, the first positioning table surface and the second positioning table surface are both circular ring table surfaces; and the positioning groove is a circular ring groove. The table surface cooperates with the groove to better realize the positioning function.
[0009] Further, a first outer fillet is arranged at the outer side port of the second positioning table surface; and a second outer fillet is arranged at the inner side port of the second positioning table surface. The outer fillets provide a larger support area for placement, and the rubber piece is not easily damaged.
[0010] Further, an installation plate is arranged at one end of the placement plate; and a cushion block is arranged below the placement plate. The installation plate can be stably installed on the hardness measuring device as the placement table, and the cushion block provides stable support for placement.
[0011] The utility model also provides a hardness measurement positioning mechanism, include: a hardness measurement positioning jig, still include: rubber piece, the rubber piece is placed on the positioning member.
[0012] Further, a main shaft column is arranged in the middle of the rubber piece; the main shaft column is placed in the through hole; a horizontal ring surface is arranged on the outer periphery of the main shaft column; a rubber piece ring groove is arranged at the lower end of the rubber piece; first and second inner fillets are arranged in the rubber piece ring groove; and a second horizontal ring surface is arranged on one side of the rubber piece ring groove close to the main shaft column. The main shaft column provides positioning effect for the rubber piece.
[0013] Further, the first outer fillet and the first inner fillet have the same radius; the radius of the first outer fillet is slightly smaller than the radius of the second inner fillet, so that the rubber piece ring groove can be accurately placed in the second positioning table surface.
[0014] Further, the horizontal ring surface is placed on the first positioning table surface; the rubber part ring groove is placed on the second positioning table surface; the second horizontal ring surface is placed in the positioning groove; the first inner fillet is matched with the first outer fillet, and the second inner fillet is matched with the first outer fillet, so that the rubber part is positioned and placed on the positioning part. The cooperation of multiple structures ensures that the rubber part can be stably placed on the positioning part to complete the hardness measurement operation.
[0015] The above technical scheme can achieve the following beneficial effects:
[0016] 1. The hardness measurement positioning jig has the following beneficial effects: the limiting piece is provided with a plurality of limiting sectors, so that the position of the limiting piece on the placing table is determined, and the eccentric hole limits the positioning part.
[0017] 2. The hardness measurement positioning jig has the following beneficial effects: the cooperation of multiple structures ensures that the rubber part can be stably placed on the positioning part to complete the hardness measurement operation. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 FIG. 1 is a structural schematic view of the hardness measurement positioning jig;
[0019] Figure 2 FIG. 2 is a schematic view of the placing table in the hardness measurement positioning jig;
[0020] Figure 3 FIG. 3 is a top view of the placing table in the hardness measurement positioning jig;
[0021] Figure 4 FIG. 4 is a schematic view of the limiting piece in the hardness measurement positioning jig;
[0022] Figure 5 FIG. 5 is a sectional view of the positioning part in the hardness measurement positioning jig;
[0023] Figure 6 FIG. 6 is a top view of the positioning part in the hardness measurement positioning jig;
[0024] Figure 7 FIG. 7 is a sectional view of the rubber part in the hardness measurement positioning mechanism;
[0025] FIG. 1:
[0026] 1- placing rack; 11- placing plate; 12- mounting plate; 13- cushion block;
[0027] 111- placing groove; 112- positioning chamfer;
[0028] 2-limiting piece; 21- eccentric hole; 22- first limiting sector, 23- second limiting sector; 24- third limiting sector;
[0029] 221- first limiting sector A end; 222- first limiting sector B end; 231- second limiting sector A end; 232- second limiting sector B end; 241- third limiting sector A end; 242- third limiting sector B end;
[0030] 3- positioning member; 31- through hole; 32- first positioning mesa; 33- positioning groove; 34- second positioning mesa; 341- first outer fillet; 342- second outer fillet;
[0031] 4- rubber member; 41- main shaft column; 42- horizontal torus; 43- rubber member ring groove;
[0032] 431- first inner fillet; 432- second inner fillet. DETAILED DESCRIPTION
[0033] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0034] Embodiment 1
[0035] In this embodiment, as Figures 1 to 4 The present application discloses a hardness measurement positioning jig, which comprises a placing rack 1, a limiting piece 2 and a positioning member 3. The placing rack 1 comprises a placing plate 11. The placing plate 11 is provided with a placing groove 111. The limiting piece 2 is arranged on the placing plate 11. The limiting piece 2 is provided with an eccentric hole 21. The positioning member 3 passes through the eccentric hole 21 and is arranged in the placing groove 111 on the placing plate 11. The circumferential surface of the placing groove 111 is provided with a positioning chamfer 112 for positioning the positioning member 3. The limiting piece 2 is provided with a first limiting sector 22, a second limiting sector 23 and a third limiting sector 24. The first limiting sector 22, the second limiting sector 23 and the third limiting sector 24 are used to determine the position of the limiting piece 2 on the placing plate 11, so as to ensure that the limiting piece 2 can limit the positioning member 3.
[0036] In this embodiment, as Figure 4The first limiting sector 22 has a first limiting sector A end 221 and a first limiting sector B end 222 at two ends, respectively; the second limiting sector 23 has a second limiting sector A end 231 and a second limiting sector B end 232 at two ends, respectively; the third limiting sector 24 has a third limiting sector A end 241 and a third limiting sector B end 242 at two ends, respectively; the first limiting sector A end 221 is parallel to the second limiting sector A end 231, and cooperates with the limiting piece 2 outer edge between the two to limit; the first limiting sector B end 222 is parallel to the third limiting sector B end 242, and cooperates with the limiting piece 2 outer edge between the two to limit; the second limiting sector B end 232 is parallel to the third limiting sector A end 241, and cooperates with the limiting piece 2 outer edge between the two to limit.
[0037] Specifically, the three sectors can be offset according to the setting of the hardness measuring mechanism, and the eccentric hole 21 of the limiting piece 2 can be ensured to be located above the placement groove 111.
[0038] In the embodiment, the positioning member 3 is provided with a through hole 31 in the middle. Figure 5 Figure 6 The through hole 31 is a cylindrical type, and a first positioning table surface 32 is provided beside the upper end surface of the through hole 31.
[0039] In particular, the surface of the through hole 31, the first positioning table surface 32, the positioning groove 33 and the second positioning table surface 34 need to be polished smooth, which can ensure the positioning and placement of the rubber member 4 without damaging the rubber member 4.
[0040] In the embodiment, the first positioning table surface 32 and the second positioning table surface 34 are both circular ring type table surfaces. Figure 5 Figure 6 The positioning groove 33 is a circular ring type groove.
[0041] In the embodiment, the second positioning table surface 34 is provided with a first outer fillet 341 at the outer port. Figure 5 Figure 6 The second positioning table surface 34 is provided with a second outer fillet 342 at the inner port.
[0042] Specifically, the arc size of the first outer fillet 341 and the second outer fillet 342 can be changed according to the specific rubber member 4.
[0043] In the embodiment, the placement plate 11 is provided with a mounting plate 12 at one end. Figure 2 The placement plate 11 is provided with a cushion block 13 below.
[0044] In particular, the cushion block 13 is a non-elastic member for ensuring that the placement plate 11 does not move up and down during the hardness measurement process.
[0045] Embodiment 2
[0046] In this embodiment, based on the embodiment 1, the rubber member 4 is placed on the positioning member 3. Figure 1 The utility model discloses a hardness measurement positioning mechanism, including: contain a hardness measurement positioning jig, still include: rubber member 4, rubber member 4 is placed on positioning member 3.
[0047] In this embodiment, as shown in Figure 1 、 Figure 5 and Fig. 7, the rubber member 4 is provided with a main shaft column 41 in the middle; the main shaft column 41 is placed in the through hole 31; the outer periphery of the main shaft column 41 is provided with a horizontal ring surface 42; the near lower end of the rubber member 4 is provided with a rubber member ring groove 43; the rubber member ring groove 43 is provided with a first inner fillet 431 and a second inner fillet 432; the side of the rubber member ring groove 43 near the main shaft column is provided with a second horizontal ring surface 44.
[0048] In this embodiment, as shown in Figure 1 、 Figure 5 and Figure 7 , the first outer fillet 341 and the first inner fillet 431 have the same radius; the radius of the first outer fillet 341 is slightly smaller than the radius of the second inner fillet 432.
[0049] Specifically, the bending fillet radius of the first inner fillet 431 and the second inner fillet 432 should be less than or equal to the thickness of the rubber member ring groove 43.
[0050] In this embodiment, as shown in Figure 1 、 Figure 5 and Figure 7 , the horizontal ring surface 42 is placed on the first positioning table surface 32; the rubber member ring groove 43 is placed on the second positioning table surface 34; the second horizontal ring surface 44 is placed in the positioning groove 33; the first inner fillet 431 cooperates with the first outer fillet 341, and the second inner fillet 432 cooperates with the first outer fillet 341, to complete the positioning and placement of the rubber member 4 on the positioning member 3.
[0051] The working principle of the above embodiment is as follows:
[0052] The utility model discloses a kind of hardness measurement positioning fixture, first limit sector A end 221 and second limit sector A end 231 cooperation limit piece 2 outer edge, first limit sector B end 222 and third limit sector B end 242 cooperation limit piece 2 outer edge, second limit sector B end 232 and third limit sector A end 241 cooperation limit piece 2 outer edge, complete limit piece 2 on the placement of plate 11;Positioning member 3 passes through eccentric hole 21, by positioning chamfer 112 positioning is placed in recess 111;Rubber piece 4 is placed on positioning member 3, main shaft column 41 is placed in through-hole 31, horizontal ring surface 42 is placed on first locating mesa 32, first inner fillet 431 and first outer fillet 341 cooperation, second inner fillet 432 and first outer fillet 341 cooperation, rubber piece ring groove 43 is placed on second locating mesa 34, second horizontal ring surface 44 is placed in locating groove 33, complete the positioning placement of rubber piece 4.
[0053] The above is only preferred embodiment of the utility model, it should be pointed out, for ordinary technical personnel in the prior art, on the premise of not departing from the principle of the utility model, can also make a number of improvements, these improvements also should be regarded as the protection scope of the utility model.
Claims
1. A hardness measurement positioning fixture, characterized by: The utility model relates to a kind of hardness measurement positioning jig, including: Placement rack (1), the placement rack (1) includes placement plate (11);Placement groove (111) is equipped on the placement plate (11); Limiting sheet (2), the limiting sheet (2) is equipped on placement plate (11);Eccentric hole (21) is equipped on the limiting sheet (2); Positioning member (3), the positioning member (3) passes through eccentric hole (21), is equipped in the placement groove (111) on placement plate (11); The peripheral surface of the placement groove (111) is provided with a positioning chamfer (112) for positioning the positioning member (3). The outer edge of the limiting sheet (2) is provided with a first limiting sector (22), a second limiting sector (23), and a third limiting sector (24). The first limiting sector (22), the second limiting sector (23), and the third limiting sector (24) are used to determine the position of the limiting sheet (2) on the placement plate (11) to ensure that the limiting sheet (2) limits the positioning member (3).
2. The hardness measurement positioning fixture of claim 1, wherein: The first limiting sector (22) has a first limiting sector A end (221) and a first limiting sector B end (222) at both ends. The second limiting sector (23) has a second limiting sector A end (231) and a second limiting sector B end (232) at both ends. The third limiting sector (24) has a third limiting sector A end (241) and a third limiting sector B end (242) at both ends. The first limiting sector A end (221) is parallel to the second limiting sector A end (231), and the outer edge of the limiting sheet (2) between the two is limited. The first limiting sector B end (222) is parallel to the third limiting sector B end (242), and the outer edge of the limiting sheet (2) between the two is limited. The second limiting sector B end (232) is parallel to the third limiting sector A end (241), and the outer edge of the limiting sheet (2) between the two is limited.
3. The hardness measurement positioning fixture of claim 1, wherein: The positioning member (3) has a through hole (31) in the middle. The through hole (31) is cylindrical. A first positioning platform (32) is provided beside the upper end surface of the through hole (31). A second positioning platform (34) is provided on the outer edge of the upper end surface of the positioning member (3). A positioning groove (33) is provided between the first positioning platform (32) and the second positioning platform (34).
4. The hardness measurement positioning fixture of claim 3, wherein: The first positioning platform (32) and the second positioning platform (34) are both circular ring platforms. The positioning groove (33) is a circular ring groove.
5. The hardness measurement positioning fixture of claim 4, wherein: A first outer fillet (341) is provided on the outer side port of the second positioning platform (34). A second outer fillet (342) is provided on the inner side port of the second positioning platform (34).
6. The hardness measurement positioning fixture of claim 1, wherein: One end of the placement plate (11) is provided with a mounting plate (12). A cushion block (13) is provided below the placement plate (11).
7. A hardness measurement positioning mechanism characterized by: The utility model relates to a kind of hardness measurement positioning jig, including: The utility model further includes: A rubber member (4) is placed on the positioning member (3).
8. A hardness measuring positioning mechanism according to claim 7, wherein: The rubber part (4) is provided with a main shaft column (41) in the middle; the main shaft column (41) is placed in a through hole (31); the outer periphery of the main shaft column (41) is provided with a horizontal ring surface (42); the rubber part (4) is provided with a rubber part ring groove (43) near the lower end; the rubber part ring groove (43) is provided with a first inner fillet (431) and a second inner fillet (432); the rubber part ring groove (43) is provided with a second horizontal ring surface (44) near the main shaft column.
9. A hardness measuring positioning mechanism according to claim 8, wherein: The first outer fillet (341) and the first inner fillet (431) have the same radius; the radius of the first outer fillet (341) is slightly smaller than the radius of the second inner fillet (432).
10. A hardness measuring positioning mechanism according to claim 9, wherein: The horizontal ring surface (42) is placed on a first positioning table surface (32); the rubber part ring groove (43) is placed on a second positioning table surface (34); the second horizontal ring surface (44) is placed in a positioning groove (33); the first inner fillet (431) cooperates with the first outer fillet (341), and the second inner fillet (432) cooperates with the first outer fillet (341), so that the rubber part (4) is positioned and placed on the positioning part (3).