Piston inner cavity inclined oil hole position detection tool

Abstract

The utility model provides a piston inner cavity inclined oil hole position detection tool, which comprises a base, an upright post, a backup plate and a pressing block, a top surface positioning seat is arranged on the base, the top surface positioning seat is used for positioning a casting piston to be detected, the base is connected with the top surface backup plate through the upright post, the liftable pressing block is arranged at the bottom of the top surface backup plate, and the pressing block is used for positioning the casting piston to be detected. The pressing block descends to be in contact with the to-be-tested casting piston and is used for pressing the to-be-tested casting piston and the top surface positioning seat; a backup plate is installed on one side of the base, at least one inclined inspection hole is formed in the backup plate, and a measuring core rod can be inserted into the inspection hole and used for inspecting whether the angle and the depth of an inner inclined oil hole of a casting piston to be detected meet requirements or not. The angle, position and depth of the inclined oil hole of the casting piston can be accurately detected, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the field of piston detection or automobile parts manufacturing, in particular to a piston inner cavity inclined oil hole position detection tool. Background Art

[0002] The angle and position of the inclined oil hole of the piston need to be measured in the casting state. At present, the angle and position of the inclined oil hole are basically measured by three-coordinate measurement. However, for the small diameter inclined oil hole, that is, the diameter of the three-coordinate probe is larger than the hole diameter of the inclined oil hole, the three-coordinate cannot detect the hole depth of the inclined oil hole, and the angle and position cannot be measured. Therefore, the traditional measurement method is used for measurement, but the processing quality of the inclined oil hole of the piston has strict requirements, and the traditional detection method is inefficient and difficult to ensure the accuracy of the detection. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a piston inner cavity inclined oil hole position detection tool for accurately detecting the angle, position and depth of the inclined oil hole of the casting piston to improve the detection efficiency and accuracy.

[0004] The utility model achieves the above technical purpose through the following technical means.

[0005] A piston inner cavity inclined oil hole position detection tool, comprising a base, a column, a backing plate and a pressing block,

[0006] A top surface positioning seat is installed on the base, and the top surface positioning seat is used to position the piston of the casting to be tested. The base is connected to the top surface support plate through a column, and a lifting and lowering pressing block is installed at the bottom of the top surface support plate. The pressing block descends and contacts the piston of the casting to be tested, so as to press the piston of the casting to be tested and the top surface positioning seat tightly.

[0007] A backing plate is installed on one side of the base, and the backing plate is provided with at least one inclined inspection hole, into which a measuring mandrel can be inserted for inspecting whether the angle and depth of the inclined oil hole in the piston of the casting to be tested meet the requirements.

[0008] Furthermore, at least one groove is provided on the end surface of the top surface positioning seat, and the groove cooperates with the protrusion on one end of the casting piston to be tested, and is used for circumferential positioning of the casting piston to be tested.

[0009] Furthermore, the clamping block is provided with two guide core rods, which pass through the top surface support plate and are used to limit the rotation of the clamping block; the clamping block is connected to one end of a rocker arm, and the rocker arm is threadedly matched with the top surface support plate. By rotating the rocker arm, the lifting and lowering of the clamping block is controlled to tighten or loosen the piston of the casting to be tested.

[0010] Further, when the measuring core rod is completely inserted into the inclined oil hole and slides freely therein, the angle of the inclined oil hole of the casting piston to be measured meets the requirements.

[0011] Furthermore, the measuring mandrel is provided with a scale mark or a depth groove. When the scale mark meets the requirement or is between the open and closed positions of the depth groove, the depth of the inclined oil hole of the casting piston to be measured meets the requirement.

[0012] Furthermore, the support plate is symmetrically provided with two inspection holes, each inspection hole is embedded with a bushing, and the measuring core rod is clearance-matched with the bushing.

[0013] The beneficial effects of the utility model are:

[0014] 1. The piston inner cavity inclined oil hole position detection tooling described in the utility model can accurately determine whether the processed inclined oil hole meets the requirements of the drawing and ensure the depth of the processed inclined oil hole.

[0015] 2. The piston inner cavity inclined oil hole position detection tooling described in the utility model can perform repeated and rapid measurements at the production site, thereby improving detection efficiency during actual use and increasing the detection cycle by about 70%.

[0016] 3. The piston inner cavity inclined oil hole position detection tooling described in the utility model can measure the angle, position and depth of the inclined oil hole, and is simple and convenient to operate. Workers can measure and self-check, ensuring the timeliness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are some embodiments of the utility model. For ordinary technicians in this field, it is obvious that other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a three-dimensional diagram of the tooling for detecting the position of the inclined oil hole in the piston cavity described in the utility model.

[0019] Figure 2 This is a three-dimensional diagram of the detection tooling of the utility model installing the casting piston to be tested.

[0020] Figure 3 This is a circumferential positioning diagram of the piston described in the utility model.

[0021] In the figure:

[0022] 1- rocker; 2- measuring mandrel; 3- back plate; 4- guide mandrel; 5- column; 6- base; 7- top surface positioning seat; 8- clamping block; 9- top surface back plate; 10- piston of the casting to be measured; 11- inspection hole. DETAILED DESCRIPTION

[0023] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1As shown, the piston inner cavity inclined oil hole position detection tool described in the utility model includes a base 6, a column 5 and a backing plate 3. The base 6 serves as the foundation of the entire tool, and stably supports the entire detection tool. Two columns 5 are vertically installed on both sides of the bottom plate 6. The two columns 5 are connected to the top backing plate 9, which can ensure that the top backing plate 9 and the clamping block 8 can be stably installed on the bottom plate 6. The top surface positioning seat 7 is detachably mounted on the base 6. The top surface positioning seat 7 is located in the center of the tool and is used to place and position the casting piston 10 to be tested. At least one groove is provided on the top surface positioning seat 7. The groove can cooperate with the protrusion on one end of the casting piston 10 to be tested, and is used for circumferential positioning of the casting piston 10 to be tested. Figure 3 As shown, it is ensured that the casting piston 10 to be tested can maintain the correct position during the testing process.

[0027] like Figure 2 As shown, the clamping block 8 can be lifted and lowered on the top surface support plate 9. By lowering the clamping block 8, the casting piston 10 to be tested and the top surface positioning seat 7 are completely clamped, which is convenient for detection. The top surface support plate 9, the column 5 and the clamping block 8 form a complete support and clamping structure to ensure the accuracy of the detection. A support plate 3 is installed on one side of the base 6. The support plate 3 is provided with an inspection hole 11. The measuring core rod 2 is inserted into the inspection hole 11 to check whether the angle and depth of the inclined oil hole machined in the casting piston 10 to be tested meet the requirements. When the measuring core rod 2 can be fully inserted into the inclined oil hole and slide freely therein, it indicates that the angle processing quality of the inclined oil hole is qualified. The measuring core rod 2 is provided with a scale mark. When the scale mark meets the requirements, it indicates that the depth processing quality of the inclined oil hole is qualified.

[0028] Since there are two symmetrical oblique oil holes on the casting piston 10 to be tested, two inspection holes 11 are symmetrically provided on the support plate 3 and equipped with a measuring core rod 2 to measure the quality of the two oblique oil holes.

[0029] In the embodiment, two guide core rods 4 are provided on the clamping block 8, and the guide core rods 4 pass through the top surface support plate 9 to limit the rotation of the clamping block 8, so as to ensure that the clamping block 8 can move smoothly and accurately. The clamping block 8 is connected to one end of the rocker 1, and the rocker 1 is threadedly matched with the top surface support plate 9. By rotating the rocker 1, the movement of the clamping block 8 can be controlled, thereby clamping or loosening the piston 10 of the casting to be tested.

[0030] In another embodiment, a digital scale mark or a depth groove is provided on the measuring mandrel 2, and the width of the depth groove is related to the error size. When the measuring mandrel 2 is fully inserted into the inclined oil hole processed in the casting piston 10 to be tested, the visual depth position must be between the open and closed ends of the depth groove to be qualified.

[0031] In another embodiment, a bushing is embedded in each inspection hole 11, and the measuring core rod 2 is in clearance with the bushing. Since repeated inspections will cause the wall of the inspection hole 11 to wear, which will affect the angle measurement, a wear-resistant bushing is embedded in the inspection hole 11. The wear-resistant bushing has a long service life and will not be easily worn by the inserted measuring core rod 2. Even if the wear-resistant bushing is worn, it can be directly replaced. More importantly, when inspecting two different angles of the casting piston 10 to be tested, it is not necessary to replace all the tooling, but only the wear-resistant bushings with different internal angles need to be replaced.

[0032] The working principle of the piston inner cavity inclined oil hole position detection tooling described in the utility model is as follows:

[0033] S01: placing the casting piston 10 to be tested on the top surface positioning seat 7, and making the groove of the casting piston 10 to be tested closely contact with the raised part in the top surface positioning seat 7.

[0034] S02: Rotate the rocker 1 to drive the clamping block 8 to completely clamp the piston 10 and the top surface positioning seat 7 of the casting to be tested.

[0035] S03: Insert the measuring mandrel 2 into the inspection hole 11 on the back plate 3 to check whether the angle and position of the oblique oil hole actually processed on the piston meet the requirements. If the measuring mandrel 2 can be fully inserted into the bottom of the processed oblique oil hole and can slide freely in the hole, it is determined that the angle processing is qualified; when the measuring mandrel 2 is fully inserted into the oblique oil hole processed by the piston, the visual depth position must be between the opening and closing of the depth groove to be qualified.

[0036] The advantages of the piston inner cavity inclined oil hole position detection tooling described in the utility model are simple measurement process, high measurement efficiency, and effective self-inspection of the processing process. It can effectively measure and inspect the angle of the inclined oil hole required by the drawing. The operation is simple and convenient. The measurement cost is relatively low.

[0037] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0038] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for detecting the position of the inclined oil hole in the inner cavity of a piston, characterized in that: It comprises a base (6), a column (5), a backing plate (3) and a pressing block (8), A top surface positioning seat (7) is installed on the base (6), and the top surface positioning seat (7) is used to position the piston (10) of the casting to be tested. The base (6) is connected to the top surface support plate (9) through a column (5), and a lifting and lowering pressing block (8) is installed at the bottom of the top surface support plate (9). The pressing block (8) is lowered to contact the piston (10) of the casting to be tested, so as to press the piston (10) of the casting to be tested and the top surface positioning seat (7). A backing plate (3) is installed on one side of the base (6), and at least one inclined inspection hole (11) is provided on the backing plate (3). A measuring mandrel (2) can be inserted into the inspection hole (11) to inspect whether the angle and depth of the inclined oil hole in the casting piston (10) to be tested meet the requirements.

2. The piston inner cavity oblique oil hole position detection tool according to claim 1, characterized in that: At least one groove is provided on the end surface of the top surface positioning seat (7), and the groove cooperates with a protrusion on one end of the casting piston (10) to be tested, and is used for circumferential positioning of the casting piston (10) to be tested.

3. The piston inner cavity inclined oil hole position detection tool according to claim 1, characterized in that: The clamping block (8) is provided with two guide core rods (4), and the guide core rods (4) pass through the top surface support plate (9) and are used to limit the rotation of the clamping block (8); the clamping block (8) is connected to one end of a rocker (1), and the rocker (1) is threadedly matched with the top surface support plate (9). By rotating the rocker (1), the lifting and lowering of the clamping block (8) is controlled to clamp or loosen the piston (10) of the casting to be tested.

4. The piston inner cavity oblique oil hole position detection tool according to claim 1, characterized in that: When the measuring core rod (2) is completely inserted into the inclined oil hole and slides freely therein, the angle of the inclined oil hole of the casting piston (10) to be measured meets the requirements.

5. The piston inner cavity oblique oil hole position detection tool according to claim 1, characterized in that: The measuring mandrel (2) is provided with a scale mark or a depth groove. When the scale mark meets the requirement or is between the opening and closing of the depth groove, the depth of the inclined oil hole of the casting piston (10) to be measured meets the requirement.

6. The piston inner cavity inclined oil hole position detection tool according to claim 1, characterized in that: The backing plate (3) is symmetrically provided with two inspection holes (11), each inspection hole (11) is embedded with a bushing, and the measuring core rod (2) is clearance-matched with the bushing.

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