A cavity measurement fixture

Abstract

This utility model belongs to the field of cavity measurement technology, specifically a cavity measuring fixture for clamping workpieces during measurement. The workpiece includes a first connecting lug, a second connecting lug, a third connecting lug, and a threaded platform. The fixture includes a base, on which a vertical first plate, a support platform, and a second plate are sequentially fixed. Both the first and second plates are equipped with horizontal clamping mechanisms for clamping the first, second, and third connecting lugs, respectively. This utility model allows for rapid support of the workpiece on the fixture via the movable first and second positioning slots. Then, horizontal pressure is applied under the action of multiple rapid clamps to hold the workpiece. In this state, the workpiece can be directly measured using three-coordinate measurement for standardized dimensional inspection, effectively reducing errors. Furthermore, all clamping and supporting positions of this fixture are staggered from the measurement positions, eliminating the need for secondary clamping and increasing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cavity measurement technology, and in particular relates to a cavity measurement fixture. Background Technology

[0002] Cavity structures refer to specific morphological structures that have hollow interiors and can contain fluids, gases, or other substances.

[0003] After the cavity structure is manufactured, it needs to be measured in a standardized manner to meet the dimensional requirements and ensure product quality. There is a type of cavity that does not have a flat surface that can be placed horizontally or stably. Due to the tilt of the cavity, traditional manual measurement with calipers often results in missed holes and human measurement errors in hole measurement due to non-standard measurement.

[0004] To address the aforementioned problems, this application proposes a cavity measuring fixture. Utility Model Content

[0005] The purpose of this invention is to provide a cavity measuring fixture that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a cavity measuring fixture for clamping a workpiece during measurement. The workpiece includes a first connecting lug, a second connecting lug, a third connecting lug, and a threaded platform. The fixture includes a base, on which a vertical first plate, a support platform, and a second plate are sequentially fixed. Both the first and second plates are provided with horizontal clamping mechanisms for clamping the first, second, and third connecting lugs, respectively. The clamping mechanisms are arranged in two sets on the first plate, one set on the second plate and flush with the clamping mechanism at the lower end of the first plate. The three sets of clamping mechanisms are arranged in a right-angled triangle shape. The support platform has a first positioning groove to support the threaded platform, and the second vertical plate has a second positioning groove to support the third connecting ear. The workpiece is vertically supported by the first and second positioning grooves.

[0007] Furthermore, the clamping mechanism on the first upright plate includes an extension plate fixed to the first upright plate and a first quick clamp mounted on the extension plate. The front end of the extension plate is provided with a clearance groove, and a first pad block is provided on the clearance groove corresponding to the clamping plate of the first upright plate.

[0008] Furthermore, a support plate is fixed to the lower side of the first upright plate, and the lower end of the support plate is also fixedly installed to the base.

[0009] Furthermore, the clamping mechanism on the second upright plate includes a step on the side of the second upright plate and a stop plate fixed on the step. A second pad block is fixed to the upper end of one side of the stop plate. A second quick clamp is installed on the side of the second upright plate away from the step, and the clamping plate on the second quick clamp corresponds to the second pad block.

[0010] Furthermore, the lower clamping mechanism of the first upright plate cooperates with the first connecting ear, the upper clamping mechanism cooperates with the second connecting ear, and the clamping mechanism on the second upright plate cooperates with the third connecting ear.

[0011] Furthermore, the clamping positions of the three clamping mechanisms are staggered from the connecting holes on the connecting ears.

[0012] Furthermore, the base is provided with a recess for partial insertion of the first upright plate, the support platform, and the lower end of the second upright plate.

[0013] This utility model has the following beneficial effects: This invention enables the workpiece to be quickly supported on the fixture by the position-shifting No. 1 and No. 2 positioning slots. Then, under the action of multiple quick clamps, horizontal pressure is applied to hold the workpiece. In this state, the workpiece can be directly measured by three coordinate measuring machines to achieve standardized size detection, effectively reducing errors. Moreover, all positions of the fixture for clamping and supporting are staggered from the measurement positions, eliminating the need for secondary clamping and improving efficiency.

[0014] 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

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention in the clamping state; Figure 2 for Figure 1 A structural diagram of the front view; Figure 3 for Figure 1 Rear view structural diagram; Figure 4 This is a schematic diagram of the fixture's structure; Figure 5 This is a schematic diagram of the cavity workpiece. The attached diagram lists the components represented by each number as follows: In the diagram: 1. Base; 2. First upright plate; 21. Extension plate; 211. Clearance groove; 212. First pad block; 22. First quick clamp; 23. Support plate; 3. Support platform; 31. First positioning groove; 4. Second upright plate; 41. Second positioning groove; 42. Step; 43. Support plate; 431. Second pad block; 44. Second quick clamp; 5. Workpiece; 51. First connecting ear; 52. Second connecting ear; 53. Third connecting ear; 54. Threaded platform. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0019] Please see Figures 1-5 As shown, this utility model is a cavity measuring fixture for clamping a cavity workpiece 5 during measurement. The workpiece 5 includes a first connecting ear 51, a second connecting ear 52, a third connecting ear 53, and a threaded platform 54. The fixture includes a base 1, on which a vertical first plate 2, a support platform 3, and a second plate 4 are fixed in sequence. Both the first plate 2 and the second plate 4 are provided with horizontal clamping mechanisms for clamping the first connecting ear 51, the second connecting ear 52, and the third connecting ear 53, respectively. The clamping mechanisms are arranged in two sets on the first plate 2, one set on the second plate 4, and the clamping mechanism is flush with the clamping mechanism at the lower end of the first plate 2. The three sets of clamping mechanisms are arranged in a right-angled triangle shape. Specifically, the support platform 3 has a first positioning groove 31 formed on it to support the threaded platform 54, and the second vertical plate 4 has a second positioning groove 41 formed on it to support the third connecting ear 53. The workpiece 5 is vertically supported by the first positioning groove 31 and the second positioning groove 41. The first positioning groove 31 and the second positioning groove 41 both match the lower contour of the threaded platform 54 and the third connecting ear 53, which can realize the rapid positioning of the workpiece 5 in the horizontal direction, thus facilitating the clamping work.

[0020] Specifically, the clamping mechanism on the first upright plate 2 includes an extension plate 21 fixed to the first upright plate 2 and a first quick clamp 22 mounted on the extension plate 21. The front end of the extension plate 21 is provided with a relief groove 211, and a first pad block 212 is provided on the relief groove 211 to correspond to the clamping plate of the first upright plate 2. In order to prevent indentations from appearing at the clamping position of the workpiece 5, in this embodiment, both the relief groove 211 and the clamping plate on the first quick clamp 22 are made of rubber.

[0021] To further enhance the stability of the connection between the No. 1 upright plate 2 and the base 1, a support plate 23 is fixed to the lower side of the No. 1 upright plate 2, and the lower end of the support plate 23 is also fixedly installed to the base 1.

[0022] Specifically, the clamping mechanism on the second upright plate 4 includes a step 42 opened on the side of the second upright plate 4 and a stop plate 43 fixed on the step 42. A second pad block 431 is fixed to the upper end of one side of the stop plate 43. A second quick clamp 44 is installed on the side of the second upright plate 4 away from the step 42, and the clamping plate on the second quick clamp 44 corresponds to the second pad block 431. In order to prevent indentations from appearing at the clamping position of the workpiece 5, in this embodiment, the clamping plates on the second pad block 431 and the second quick clamp 44 are both made of rubber.

[0023] Furthermore, the lower clamping mechanism of the first upright plate 2 cooperates with the first connecting ear 51, the upper clamping mechanism cooperates with the second connecting ear 52, and the upper clamping mechanism of the second upright plate 4 cooperates with the third connecting ear 53. The stable positioning of the workpiece 5 can be ensured by the three-point clamping in this embodiment.

[0024] Furthermore, to prevent interference between the clamping position and the measuring position, the clamping positions of the three clamping mechanisms and the connecting holes on the connecting ears are all staggered.

[0025] Furthermore, in order to improve the stability of the clamp, the base 1 is provided with a recess for partial insertion of the lower ends of the first upright plate 2, the support platform 3, and the second upright plate 4. After the first upright plate 2, the support platform 3, and the second upright plate 4 are inserted into the base 1, they are fixed from the bottom of the base 1 with bolts.

[0026] A specific application of this embodiment is as follows: The base 1 is fixed at the measurement position of the coordinate measuring machine. The first quick clamp 22 and the second quick clamp 44 are both in the loose state. The workpiece 5 is placed on the clamp and the threaded platform 54 at the corresponding position is supported in the first positioning groove 31. The third connecting ear 53 at the corresponding position is supported in the second positioning groove 41. The first quick clamp 22 and the second quick clamp 44 are pressed together. The first connecting ear 51, the second connecting ear 52, and the third connecting ear 53 on the workpiece 5 are squeezed and clamped on the clamp.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cavity measuring fixture for clamping a workpiece (5) during measurement, the workpiece (5) comprising a first connecting lug (51), a second connecting lug (52), a third connecting lug (53), and a threaded platform (54), characterized in that: The fixture includes a base (1), on which a vertical first plate (2), a support platform (3), and a second plate (4) are fixed in sequence. Both the first plate (2) and the second plate (4) are provided with horizontal clamping mechanisms for clamping the first connecting ear (51), the second connecting ear (52), and the third connecting ear (53), respectively. The clamping mechanisms are arranged in two sets on the first plate (2) and one set on the second plate (4) and are flush with the clamping mechanism at the lower end of the first plate (2). The three sets of clamping mechanisms are arranged in a right-angled triangle shape. The support platform (3) has a first positioning groove (31) formed on it to support the threaded platform (54), and the second upright plate (4) has a second positioning groove (41) formed on it to support the third connecting ear (53). The workpiece (5) is vertically supported by the first positioning groove (31) and the second positioning groove (41).

2. The cavity measuring fixture according to claim 1, characterized in that: The clamping mechanism on the first upright plate (2) includes an extension plate (21) fixed on the first upright plate (2) and a first quick clamp (22) installed on the extension plate (21). The front end of the extension plate (21) is provided with a clearance groove (211), and a first pad block (212) is provided on the clearance groove (211) corresponding to the clamping plate of the first upright plate (2).

3. A cavity measuring fixture according to claim 2, characterized in that: A support plate (23) is fixed to the lower side of the first upright plate (2), and the lower end of the support plate (23) is also fixedly installed with the base (1).

4. A cavity measuring fixture according to claim 1, characterized in that: The clamping mechanism on the second upright plate (4) includes a step (42) opened on the side of the second upright plate (4) and a stop plate (43) fixed on the step (42). A second pad (431) is fixed on the upper end of one side of the stop plate (43). A second quick clamp (44) is installed on the side of the second upright plate (4) away from the step (42), and the clamping plate on the second quick clamp (44) corresponds to the second pad (431).

5. A cavity measuring fixture according to claim 1, characterized in that: The lower clamping mechanism of the first upright plate (2) cooperates with the first connecting ear (51), the upper clamping mechanism cooperates with the second connecting ear (52), and the upper clamping mechanism of the second upright plate (4) cooperates with the third connecting ear (53).

6. A cavity measuring fixture according to claim 1, characterized in that: The clamping positions of the three clamping mechanisms are staggered from the connecting holes on the connecting ears.

7. A cavity measuring fixture according to claim 1, characterized in that: The base (1) has a recessed groove for partial insertion of the lower ends of the first upright plate (2), the support platform (3), and the second upright plate (4).

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