Clamp for detecting ceramic core

Abstract

The utility model relates to the field of machinery, in particular to a detection device. The clamp for detecting the ceramic core comprises a supporting column with a square cross section and further comprises a cantilever device used for fixing the ceramic core, the two opposite side walls of the supporting column are each provided with at least two sliding grooves with outward openings, the rear end of the cantilever device is connected with a U-shaped installation part, the installation part comprises two installation frames, and the two installation frames are arranged on the supporting column. Sliding blocks matched with the sliding grooves are arranged on the inner sides of the two mounting frames, and the cantilever devices are detachably connected with the supporting columns through the sliding grooves and the sliding blocks. The cantilever device and the supporting column are detachably connected through the sliding groove and the sliding block, the problem that an existing clamp in the background technology is complex in installation can be effectively solved, and the ceramic mold core clamping device is allowed to adapt to different types of ceramic mold cores with different heights by selecting the position of the sliding groove.

Description

Technical Field

[0001] The utility model relates to the field of detection, in particular to a clamp for detection. Background Art

[0002] Ceramic cores are one of the most important raw and auxiliary materials in the field of high-temperature alloy precision casting, especially in the casting of hollow blades at the hot end of aircraft engines and gas turbines. The performance of the ceramic core directly determines the cavity distribution state of the hollow blades, directly affects the distribution of the blade wall thickness, and has a crucial impact on the pass rate of hollow casting blades.

[0003] The existing fixture for testing ceramic cores is not only complicated to install, but also can only fix one ceramic core on one fixture, resulting in very low testing efficiency of the ceramic cores. Utility Model Content

[0004] The purpose of the present utility model is to provide a fixture for detecting ceramic cores, so as to solve at least one of the above technical problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A fixture for testing ceramic cores, comprising a support column having a square cross-section and a cantilever device for fixing the ceramic core, wherein at least two outwardly facing slide grooves are respectively formed on two opposite side walls of the support column;

[0007] The rear end of the cantilever device is connected to a "U"-shaped mounting portion, which includes two mounting frames. The inner sides of the two mounting frames are provided with sliders matching the slide grooves. The cantilever device is detachably connected to the support column through the slide grooves and the sliders.

[0008] The cantilever device and the support column of the utility model are detachably connected through a slide groove and a slider, which not only effectively solves the problem of complex fixture installation in the background technology, but also allows different types of ceramic cores with different heights to be adapted by selecting the position of the slide groove.

[0009] Preferably, at least one of the chutes is inclined clockwise, referred to as a first chute, and at least one of the chutes is inclined counterclockwise, referred to as a second chute. Both the first chute and the second chute form an acute angle with the horizontal plane. The present invention provides both a first chute and a second chute on the side wall. By utilizing the different inclinations of the first and second chutes, a ceramic core can be mounted on each side of the support column, thereby resolving the problem in the prior art where a single fixture can only hold a single ceramic core.

[0010] The utility model selects the size of the included angle, and the acute angle structure can effectively disperse the stress of the connected cantilever device, thereby making the utility model more firm during movement and use.

[0011] Preferably, the first chute grooves on the same side wall of the support column are evenly spaced and arranged across the entire side wall, thereby forming a first tooth-like structure; the second chute grooves on the same side wall of the support column are evenly spaced and arranged across the entire side wall, thereby forming a second tooth-like structure; the first and second tooth-like structures are interlaced on the side wall of the support column to form a diamond-shaped lattice structure, thereby further increasing the number of applicable ceramic cores.

[0012] Preferably, the distance between two adjacent first chutes or the distance between two adjacent second chutes is 2 mm to 4 mm, so as to ensure the connection strength between the cantilever device and the support column.

[0013] Preferably, at least one row of intersection points of the first tooth-shaped structure and the second tooth-shaped structure is located at the edges of the two side walls of the support column, so as to facilitate the insertion of the slider of the cantilever device.

[0014] Preferably, the front end of the cantilever device is connected to an annular member, the center of which is provided with a central hole for inserting the end of the ceramic core. The annular member is provided with bolt holes extending therethrough, wherein the bolt holes are threadedly connected to the inner threads of the bolt holes for tightening the end of the ceramic core. Thus, the end of the ceramic core is inserted into the central hole.

[0015] Preferably, the plane on which the annular component lies forms an obtuse angle with the plane on which the mounting portion lies, the obtuse angle being the supplementary angle of the angles formed between the first and second chutes and a horizontal plane. Thus, after the cantilever assembly is inserted into the support frame, the annular component is positioned horizontally, thereby positioning the ceramic core vertically downward.

[0016] Preferably, there are at least three bolt holes, and the bolt holes are arranged at equal intervals, so that the end of the ceramic core is fixed more stably.

[0017] Preferably, the middle portion of the cantilever device is arc-shaped, and the width gradually decreases from the mounting portion toward the annular component, so as to utilize the arc-shaped middle portion to stagger the bolt holes of the cantilever device to facilitate screwing the bolts.

[0018] Preferably, there are an even number of cantilever devices, and each group consists of two cantilever devices. In each group, one cantilever device is located above the support column, and the other cantilever device is located below the support column. Thus, one cantilever device fixes the ceramic core from the top, and the other cantilever device fixes the ceramic core from the bottom, ultimately making the ceramic core more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0020] Figure 1 It is an overall schematic diagram of the utility model;

[0021] Figure 2 It is a front view of the utility model;

[0022] Figure 3 It is a schematic diagram of the upward chute and the downward chute of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the cantilever device connected to the support column of the utility model.

[0024] Figure 5 This is a schematic diagram of the angle of the mounting bracket of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the cantilever of the utility model.

[0026] Explanation of symbols:

[0027] 1. Base; 2. Protective cover; 3. Support column; 4. Cantilever device; 5. Bolt; 30. Slide; 40. Cantilever; 41. Mounting frame; 42. Ring-shaped component; A. Sharp angle; B. Rear bolt; C. Right bolt; D. Second slide; E. First slide. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Reference Figure 1 、 Figure 2 、 Figure 3 As shown, the ceramic core inspection fixture includes a support column 3 with a square cross-section and a cantilever device 4 for fixing the ceramic core. At least two outward-facing chute grooves 30 are respectively formed on two opposite side walls of the support column 3. At least one of the chute grooves 30 is inclined clockwise and is referred to as the first chute groove E. At least one of the chute grooves 30 is inclined counterclockwise and is referred to as the second chute groove D.

[0033] The rear end of the cantilever device 4 is connected to a "U"-shaped mounting portion, which includes two mounting frames 41. The inner sides of the two mounting frames 41 are provided with sliders matching the slide groove 30. The cantilever device 4 is detachably connected to the support column 3 through the slide groove 30 and the slider.

[0034] First, in this embodiment, the detection fixture has a base 1, a support column 3 stands on the base 1, a slide groove 30 is provided on the side wall of the support column 3, and the cantilever device 4 and the support column 3 are detachably connected through the slide groove 30 and the slider, which not only effectively solves the problem of complex installation of the existing fixture in the background technology, but also allows the selection of the position of the slide groove 30 to adapt to different types of ceramic cores with different heights.

[0035] Secondly, the utility model has a first slide groove E and a second slide groove D on the side wall at the same time. The different inclination directions of the first slide groove E and the second slide groove D can be used to hang ceramic cores on both sides of the support column 3, thereby solving the problem in the background technology that a single clamp can only fix one ceramic core.

[0036] Reference Figure 3 As shown, the first chute E and the second chute D both form an acute angle A with the horizontal plane.

[0037] In this embodiment, the size of the angle is selected, and the structure of the acute angle A can effectively disperse the weight of the connected cantilever device 4. According to the principle of force decomposition, the weight of the cantilever device 4 is decomposed along the inclination angle and perpendicular to the inclination angle. The greater the component force backward along the inclination angle, the more firmly the cantilever device 4 can be maintained on the support column 3, thereby making the utility model more secure during movement and use.

[0038] Reference Figure 3As shown, the first sliding grooves E opened on the same side wall of the support column 3 are arranged at equal intervals on the side wall, thereby forming a first tooth-like structure; the second sliding grooves D opened on the same side wall of the support column 3 are arranged at equal intervals on the side wall, thereby forming a second tooth-like structure; the first tooth structure and the second tooth structure are staggered on the side wall of the support column 3 to form a diamond grid structure.

[0039] In this embodiment, tooth-like structures with the same relative inclination angle are provided on the opposite side walls, so that the mounting frame 41 can be inserted from any two opposite sides, which makes it convenient and labor-saving to insert and remove the cantilever 40, thereby further increasing the applicable ceramic cores.

[0040] Preferably, the distance between two adjacent first chutes E or the distance between two adjacent second chutes D is 2 mm-4 mm.

[0041] To ensure the connection strength between the cantilever device 4 and the support column 3.

[0042] Preferably, at least one row of intersection points of the first tooth-shaped structures and the second tooth-shaped structures is located at the edges of the two side walls of the support column 3 .

[0043] This facilitates the simultaneous insertion of the sliders of the cantilever device 4 from two opposite side walls.

[0044] Reference Figure 4 、 Figure 6 As shown, the front end of the cantilever device 4 is connected to a ring-shaped annular component 42, and a center hole is opened in the center of the annular component 42 for the end of the ceramic core to be inserted. The annular component 42 is provided with bolt holes that pass through the inside and outside, and the bolt holes are threaded with bolts 5 for tightening the end of the ceramic core.

[0045] In this embodiment, the annular member 42 is used to clamp the end of the ceramic core. The bolt 5 is screwed into the threaded hole extending through the inner and outer portions of the bolt 5, and the head of the bolt 5 engages the end of the ceramic core, thereby more securely clamping the ceramic core. This advantageous effect is that the annular member 42 has a simple structure and is easy to manufacture, thereby reducing manufacturing costs.

[0046] Reference Figure 5 As shown, the plane where the annular component 42 is located forms an obtuse angle with the plane where the mounting portion is located, and the obtuse angle is the supplementary angle of the angle formed by the first chute E, the second chute D and the horizontal plane.

[0047] In this embodiment, the mounting portion adopts the same inclination angle as the first slide groove E and the second slide groove D. When the inclination angles of the two are consistent, on the one hand, it is convenient for the mounting portion to be inserted into the supported side wall. On the other hand, after the cantilever device 4 is inserted into the support frame, the annular component 42 is located in the horizontal direction, thereby making the ceramic core vertically downward.

[0048] Reference Figure 4 、 Figure 6 As shown, there are at least three bolt holes, and the bolt holes are arranged at equal intervals.

[0049] In this embodiment, the bolt holes are arranged at equal intervals, and at least three bolts 5 are used. Such a design can make the fixation of the end of the ceramic core more stable and firm.

[0050] Reference Figure 4 、 Figure 6 As shown, the middle portion of the cantilever device 4 is arc-shaped, and the width gradually decreases from the mounting portion toward the annular component 42 .

[0051] In this embodiment, the arc shape in the middle of the cantilever device 4 is utilized, and a ring-shaped component 42 for clamping is provided on the side facing the arc. On the one hand, this design can maintain the stability of the center of gravity of the entire device. On the other hand, the cantilever device 4 utilizes the position vacated by the arc bend to stagger the entry and exit positions of the bolt holes, thereby facilitating the operation of the rear bolt B and the right bolt C.

[0052] Reference Figure 1 、 Figure 2 As shown, there are an even number of cantilever devices 4 , and each two form a group. In the same group, one cantilever device 4 is located at the upper part of the support column 3 , and the other cantilever device 4 is located at the lower part of the support column 3 .

[0053] In this embodiment, the ceramic core to be tested has an end face design that is easy to clamp at the upper and lower ends. Each of the upper and lower ends requires a cantilever device 4 for clamping. The two cantilever devices 4, one fixes one end of the ceramic core from the top, and the other fixes the other end of the ceramic core from the bottom, ultimately making the fixation of the ceramic core more stable.

[0054] Furthermore, it includes a protective cover 2, the bottom of the protective cover 2 is provided with an opening, the opening is sealed by the base 1, the protective cover 2 and the base 1 form a sealed cavity, and the support column 3 is located in the sealed cavity.

[0055] Furthermore, the base 1 is a circular base 1, and a step adapted to the protective cover 2 is provided on the outer diameter edge of the base 1, the step height is greater than 3 mm, and the lower end of the protective cover 2 is sleeved on the step.

[0056] Furthermore, the support column 3 and the cantilever device 4 are made of ceramic materials that can withstand temperatures of 1700°C.

[0057] In this embodiment, the base 1, the support column 3, and the cantilever device 4 are all made of ceramic materials that can withstand temperatures of 1700°C. The beneficial effect of this design is that it ensures that when the ceramic core to be tested is exposed to heat in the heating device, all components of the above-mentioned detection device have good heat shock resistance.

[0058] In this embodiment, the function of the protective cover 2 is to cover the support column 3, the cantilever 40, and the ceramic core to be tested on the base 1, and a step is set on the outer diameter edge of the base 1. The protective cover 2 is mounted on the step of the base 1. On the one hand, the mounting is more firm, and on the other hand, the mounting is more rigorous. Its beneficial effect is that it isolates the airflow and the interference of pollutants in the measurement environment, and is closer to the actual working environment of the ceramic core, thereby providing a direct and accurate evaluation of the performance of the ceramic core.

[0059] Furthermore, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention.

[0060] It should be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A fixture for testing ceramic cores, comprising a support column with a square cross section and a cantilever device for fixing the ceramic core, characterized in that: At least two outward-facing sliding grooves are respectively formed on two opposite side walls of the support column; The rear end of the cantilever device is connected to a "U"-shaped mounting portion, which includes two mounting frames. The inner sides of the two mounting frames are provided with sliders matching the slide grooves. The cantilever device is detachably connected to the support column through the slide grooves and the sliders.

2. The ceramic core detection fixture according to claim 1, characterized in that: At least one of the chutes is inclined clockwise, which is referred to as a first chute, and at least one of the chutes is inclined counterclockwise, which is referred to as a second chute. Both the first chute and the second chute form an acute angle with the horizontal plane.

3. The ceramic core detection fixture according to claim 2, characterized in that: The first sliding grooves opened on the same side wall of the support column are evenly spaced and spread all over the side wall, thereby forming a first tooth-like structure; the second sliding grooves opened on the same side wall of the support column are evenly spaced and spread all over the side wall, thereby forming a second tooth-like structure; the first tooth structure and the second tooth structure are staggered on the side wall of the support column to form a diamond grid structure.

4. The ceramic core detection fixture according to claim 3, characterized in that: The distance between two adjacent first chutes or the distance between two adjacent second chutes is 2 mm to 4 mm.

5. The ceramic core detection fixture according to claim 3, characterized in that: At least one row of intersection points of the first tooth-shaped structures and the second tooth-shaped structures is located at the edges of two side walls of the support column.

6. The ceramic core inspection fixture according to any one of claims 1 to 5, characterized in that: The front end of the cantilever device is connected to a ring-shaped annular component, the center of which is provided with a center hole for inserting the end of the ceramic core, and the annular component is provided with bolt holes that pass through inside and outside, and the inner threads of the bolt holes are screwed with bolts for tightening the end of the ceramic core.

7. The ceramic core detection fixture according to claim 6, characterized in that: The plane where the annular component is located forms an obtuse angle with the plane where the mounting portion is located, and the obtuse angle is the supplementary angle of the angles formed by the first chute, the second chute and a horizontal plane.

8. The fixture for detecting ceramic cores according to claim 6, wherein: There are at least three bolt holes, and the bolt holes are arranged at equal intervals.

9. The ceramic core inspection fixture according to any one of claims 1 to 5, characterized in that: The middle portion of the cantilever device is arc-shaped, and the width gradually decreases from the mounting portion toward the annular component.

10. The ceramic core inspection fixture according to any one of claims 1 to 5, characterized in that: There are an even number of cantilever devices, and every two form a group. In the same group, one cantilever device is located at the upper part of the support column, and the other cantilever device is located at the lower part of the support column.

Images