Casting inner cavity shape correction testing fixture

Abstract

The utility model discloses a casting inner cavity shape correction gauge which comprises a detection plate, a support column and a positioning mechanism. The size of the detection plate is matched with the size of an opening of an inner cavity of the casting, the side face of the detection plate is matched with the inner wall of the casting, and the detection plate is provided with a plurality of fixing holes and a plurality of mounting holes; the supporting columns are installed in the fixing holes, and the end face formed by the bottoms of the multiple supporting columns is parallel to the detection plate. The positioning mechanism comprises a positioning rod and a spring, the positioning rod is sleeved with the spring, the first end of the spring abuts against the lower surface of the detection plate, and the positioning rod penetrates through the mounting hole. The casting inner cavity shape correction testing fixture is simple in operation, can rapidly detect the casting inner cavity, and is simple in structure and convenient to maintain; the detection efficiency is improved and the detection cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting detection, in particular to a casting inner cavity correction inspection tool. Background Art

[0002] Castings are prone to deformation during casting due to factors such as materials, temperature, and process. Castings need to be calibrated and tested to see if they meet quality requirements. Testing whether the inner cavity of a casting is deformed mainly involves testing whether the straightness of the four sides of the inner cavity is within the quality requirements. Straightness describes the degree to which the straight track on the surface of an object deviates from the ideal straight line, and is one of the important indicators for measuring the straight line properties of an object. Currently, three-coordinate measuring instruments are used for straightness measurement, which not only has high requirements for the instrument, but also is expensive and has high requirements for operators. At the same time, the measurement process takes a lot of time, resulting in low detection efficiency and high detection costs, which affects product output. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a casting inner cavity correction inspection tool, which can quickly detect whether the inner cavity of the casting is deformed, improve the inspection efficiency, and reduce the inspection cost.

[0004] An embodiment of the utility model provides a casting inner cavity correction inspection tool, comprising a detection plate, a support column and a positioning mechanism; the size of the detection plate is adapted to the size of the inner cavity opening of the casting, and the side of the detection plate is adapted to the inner wall of the casting, and the detection plate is provided with a plurality of fixing holes and a plurality of mounting holes; the support column is installed in the fixing hole, and the end surface formed by the bottom of the plurality of support columns is parallel to the detection plate; the positioning mechanism comprises a positioning rod and a spring, the spring is sleeved on the positioning rod, the first end of the spring abuts against the lower surface of the detection plate, and the positioning rod is passed through the mounting hole.

[0005] According to some embodiments of the present utility model, the positioning mechanism further includes a fixing screw and a gasket, and the gasket is sleeved on the fixing screw.

[0006] According to some embodiments of the present utility model, a screw hole is provided at the first end of the positioning rod, a positioning hole is provided at the second end of the positioning rod, and the fixing screw is installed in the screw hole.

[0007] According to some embodiments of the present utility model, the second end of the positioning rod is provided with an annular boss, and the second end of the spring abuts against the annular boss.

[0008] According to some embodiments of the present invention, the casting is provided with a cylinder, and the diameter of the positioning hole is larger than the diameter of the cylinder.

[0009] According to some embodiments of the present invention, the heights of the plurality of support columns are all the same.

[0010] According to some embodiments of the present invention, the number of the positioning mechanisms is two, and a line connecting the two positioning mechanisms forms an angle with a side edge of the detection plate.

[0011] According to some embodiments of the present utility model, a handle is installed on the detection plate.

[0012] According to some embodiments of the present invention, a plurality of avoidance holes are provided in the detection plate.

[0013] According to some embodiments of the utility model, the casting inner cavity profiling gauge further includes a feeler gauge, and the feeler gauge is used to measure the gap between the inner wall of the casting and the inspection plate.

[0014] The utility model has at least the following beneficial effects:

[0015] The casting inner cavity shape correction inspection tool includes a detection plate, a support column and a positioning mechanism. The size of the detection plate is compatible with the size of the inner cavity opening of the casting, and the side of the detection plate is compatible with the inner wall of the casting. The end surface formed by the bottom of the multiple support columns is parallel to the detection plate. The detection plate has multiple detection edges, and the multiple detection edges are all straight lines. By measuring the gap between the detection edge and the four sides of the casting inner cavity, it is detected whether the straightness of the four sides of the casting inner cavity is within the quality requirement range. The casting inner cavity shape correction inspection tool is simple to operate, can quickly detect the casting inner cavity, has a simple structure, and is easy to maintain; it improves detection efficiency and reduces detection costs, thereby improving product quality and product output.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of a casting inner cavity shape correction inspection fixture according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the casting inner cavity correction inspection fixture and the casting according to the embodiment of the utility model;

[0020] Figure 3 for Figure 1 The schematic diagram of the structure of the detection plate of the casting inner cavity correction inspection fixture is shown;

[0021] Figure 4 for Figure 1 The structural schematic diagram of the positioning mechanism of the casting inner cavity correction gauge is shown;

[0022] Figure 5 for Figure 2 Schematic diagram of the structure of the casting is shown.

[0023] Reference numerals:

[0024] Detection plate 100, fixing hole 111, mounting hole 112, avoidance hole 113, handle 120;

[0025] Support column 200, positioning mechanism 300, positioning rod 310, positioning hole 311, annular boss 312, spring 320, fixing screw 330, gasket 340;

[0026] Casting 400 , cylinder 410 , and feeler gauge 500 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "multiple" means more than two, greater than, less than, and exceeding are understood as not including the number itself, and "above", "below", and "within" are understood as including the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present utility model, unless otherwise clearly defined, words such as “set,” “install,” “connect,” and “connected” should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present utility model based on the specific content of the technical solution.

[0031] The technical solution of the utility model is described in detail below through the accompanying drawings and specific embodiments:

[0032] Please refer to Figures 1 to 3 The present embodiment discloses a casting inner cavity correction inspection fixture, including a detection plate 100, a support column 200 and a positioning mechanism 300; the size of the detection plate 100 is adapted to the inner cavity opening size of the casting 400, and the side of the detection plate 100 is adapted to the inner wall of the casting 400, and the detection plate 100 is provided with a plurality of fixing holes 111 and a plurality of mounting holes 112; the support column 200 is installed in the fixing hole 111, and the end surface formed by the bottom of the plurality of support columns 200 is parallel to the detection plate 100; the positioning mechanism 300 includes a positioning rod 310 and a spring 320, the spring 320 is sleeved on the positioning rod 310, the first end of the spring 320 abuts against the lower surface of the detection plate 100, and the positioning rod 310 is passed through the mounting hole 112. The inspection plate 100 has multiple inspection edges, all of which are straight lines. Straightness inspection is performed by measuring the gaps between the inspection edges and the four sides of the inner cavity of the casting 400. The casting inner cavity correction inspection fixture can quickly inspect the inner cavity of the casting 400. It has a simple structure and is easy to operate, which improves inspection efficiency and reduces inspection costs.

[0033] Please refer to Figure 1 and Figure 4 The positioning mechanism 300 further includes a fixing screw 330 and a gasket 340 , and the gasket 340 is sleeved on the fixing screw 330 ; the fixing screw 330 and the gasket 340 limit the range of movement of the spring 320 to prevent the spring 320 from falling.

[0034] Please refer to Figure 1 and Figure 4 The first end of the positioning rod 310 is provided with a screw hole, the second end of the positioning rod is provided with a positioning hole 311, and the fixing screw 330 is installed in the screw hole; the positioning hole 311 is used to position the casting 400.

[0035] Please refer to Figure 1 and Figure 4 The second end of the positioning rod 310 is provided with an annular boss 312, and the second end of the spring 320 abuts against the annular boss 312. The annular boss 312 and the gasket 340 together limit the range of movement of the spring 320 to prevent the spring 320 from falling.

[0036] Please refer to Figure 1 and Figure 5, the casting 400 is provided with a cylinder 410, and the diameter of the positioning hole 311 is larger than the diameter of the cylinder 410; the cylinder 410 is inserted into the positioning hole 311 for positioning. It should be noted that the cylinder 410 is the original structure on the casting 400. In order to accurately position the casting 400, the present embodiment adaptively sets the positioning rod 310 for the cylinder 410 on the casting 400, and sets the positioning hole 311 with a diameter larger than the cylinder 410 on the positioning rod 310, so that the cylinder 410 can be inserted into the positioning hole 311, thereby positioning the casting 400 to a preset position. Moreover, since the cylinder 410 is located in the cavity of the casting 400, the deformation or position offset that occurs during the casting process is relatively small, and it can be used as a reference for accurate positioning.

[0037] Please refer to Figure 1 The heights of the plurality of support columns 200 are all the same, and the support columns 200 stably support the detection plate 100. Thus, when the casting 400 is placed horizontally for detection, the detection plate 100 can be placed horizontally through the support of the support columns 200, so that the straight edge of the detection plate 100 can be used as a straightness reference datum, thereby avoiding detection errors caused by the skewness of the detection plate 100, and helping to improve the accuracy of detection.

[0038] Please refer to Figure 1 For example, there are two positioning mechanisms 300, and the line connecting the two positioning mechanisms 300 forms an angle with the side of the detection plate 100. The detection plate 100 is positioned in the casting 400 quickly and accurately by positioning at two positioning points.

[0039] Please refer to Figure 3 A handle 120 is installed on the detection board 100 to facilitate taking or placing the detection board 100 and improve detection efficiency.

[0040] Please refer to Figure 3 , a plurality of avoidance holes 113 are provided in the detection plate 100. There are generally some protruding parts in the inner cavity of the casting 400. By providing the avoidance holes 113, these protruding parts are avoided so that the detection plate 100 is flush with the inner cavity opening of the casting 400, avoiding detection errors caused by the skewness of the detection plate 100.

[0041] Please refer to Figure 2 The casting inner cavity correction gauge also includes a feeler gauge 500, which is used to be inserted between the inner wall of the casting 400 and the detection plate 100. Specifically, the specification of the feeler gauge 500 is 75 mm, and the thickness of the feeler gauge 500 is 0.02 ~ 1 mm.

[0042] During the inspection, first use a special leveling rubber hammer to knock the side frame of the casting 400 to ensure the straightness of the side frame; then cover the casting inner cavity correction gauge at the inner cavity opening of the casting 400, insert the cylinder 410 into the positioning hole 311, the side of the inspection plate 100 matches the inner wall of the casting 400, and the support column 200 abuts the bottom of the inner cavity of the casting 400. If the deformation degree of the casting 400 is greater than the quality requirement, the feeler gauge 500 can be inserted into the gap between the inner wall of the casting 400 and the inspection plate 100. For example, a feeler gauge with a thickness of 0.3 mm is used for detection, and the feeler gauge 500 is inserted between the inner wall of the casting 400 and the detection plate 100; by measuring the gap between the detection edge and the four sides of the inner cavity of the casting 400, a straightness test is performed to detect whether the inner cavity of the casting 400 is deformed; if the straightness is less than 0.30 mm, it is within the qualified range of the product, otherwise it is determined that the inner cavity of the casting 400 is deformed and needs to be corrected. The casting inner cavity correction inspection fixture can quickly detect the inner cavity of the casting 400, and the casting 400 with inner cavity deformation during the casting process can be quickly detected. The casting 400 with artificial correction can also be quickly determined whether it is within the qualified range, effectively preventing defective products from flowing into the next process; it has a simple structure and easy operation, and only needs to cooperate with the standard feeler gauge 500 for detection, and the volume of the inspection fixture is comparable to the volume of the casting 400, and is not limited by the detection space; it improves detection efficiency and reduces detection costs, thereby improving product quality and product output.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A casting inner cavity shape checking fixture, used to detect whether the inner cavity of a casting (400) is deformed, characterized in that: include: A detection plate (100), the size of the detection plate (100) being compatible with the size of the inner cavity opening of the casting (400), and the side surface of the detection plate (100) being compatible with the inner wall of the casting (400), and the detection plate (100) being provided with a plurality of fixing holes (111) and a plurality of mounting holes (112); a plurality of support columns (200), the support columns (200) being installed in the fixing holes (111), and end surfaces formed at the bottoms of the plurality of support columns (200) being parallel to the detection plate (100); A positioning mechanism (300), the positioning mechanism (300) comprising a positioning rod (310) and a spring (320), the spring (320) being sleeved on the positioning rod (310), the first end of the spring (320) being in contact with the lower surface of the detection plate (100), and the positioning rod (310) being passed through the mounting hole (112).

2. The casting inner cavity correction gauge according to claim 1, characterized in that: The positioning mechanism (300) further comprises a fixing screw (330) and a gasket (340), wherein the gasket (340) is sleeved on the fixing screw (330).

3. The casting inner cavity correction gauge according to claim 2, characterized in that: A screw hole is provided at the first end of the positioning rod (310), a positioning hole (311) is provided at the second end of the positioning rod, and the fixing screw (330) is installed in the screw hole.

4. The casting inner cavity correction gauge according to claim 2, characterized in that: The second end of the positioning rod (310) is provided with an annular boss (312), and the second end of the spring (320) abuts against the annular boss (312).

5. The casting inner cavity correction gauge according to claim 3, characterized in that: The casting (400) is provided with a cylinder (410), and the diameter of the positioning hole (311) is greater than the diameter of the cylinder (410).

6. The casting inner cavity correction gauge according to claim 1, characterized in that: The heights of the plurality of support columns (200) are all the same.

7. The casting inner cavity correction gauge according to claim 1, characterized in that: The number of the positioning mechanisms (300) is two, and a line connecting the two positioning mechanisms (300) forms an angle with a side edge of the detection plate (100).

8. The casting inner cavity shape correction gauge according to claim 1, characterized in that: A handle (120) is installed on the detection plate (100).

9. The casting inner cavity shape correction gauge according to claim 1, characterized in that: A plurality of avoidance holes (113) are provided in the detection plate (100).

10. The casting inner cavity shape correction gauge according to any one of claims 1 to 9, characterized in that: The casting inner cavity shape correction inspection tool further comprises a feeler gauge (500), wherein the feeler gauge (500) is used to measure the gap between the inner wall of the casting (400) and the inspection plate (100).

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