Oil pump outer circumference detection pneumatic quantity gauge test bench

Abstract

The utility model discloses an oil pump outer periphery detection pneumatic quantity appearance test board, including a pair of parallel detection arm and a pair of guide block of detection base, the top of detection base is equipped with the workpiece placing table and the locating block of protruding, detection arm is equipped at the both sides of workpiece placing table, the front side of workpiece placing table is equipped with the locating block between two detection arms, the rear end of detection arm is fixed with guide block, and the rear edge of guide block is equipped with first inclined guide wall, the inner wall of detection arm and guide block is parallel with each other, and the inner wall of guide block is concave to the inner wall of detection arm, and the rear end of detection arm is equipped with second inclined guide wall, and the inner wall of detection arm is equipped with at least three detection air holes of longitudinal straight line arrangement, owing to the parallel of guide block and the inner wall of detection arm and the concave of guide block inner wall, two inclined guide walls play the guiding avoidance effect, and workpiece does not contact with the edge in the moving process, effectively avoids the scratch of the rejection in the detection process, improves the detection quality and the qualified rate of workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of oil pump peripheral testing, and in particular to a pneumatic measuring instrument test stand for oil pump peripheral testing. Background Technology

[0002] In the manufacturing process of oil pumps, the dimensional accuracy and surface quality of the outer diameter are crucial to the product's performance and reliability. Oil pumps have high dimensional requirements for their outer diameter, and the surface roughness must reach Rz6.3, with no obvious traces allowed. To ensure product quality, a full inspection is required at three sections of the outer diameter.

[0003] Patent CN222812358U discloses an integrated pneumatic measuring device, including a base, a dual-hole pneumatic gauge inner diameter measuring head, and a dual-hole outer diameter measuring head. Both the inner and outer diameter measuring heads are mounted on the base, with the inner diameter measuring head positioned inside the outer diameter measuring head. This integrated design enables rapid measurement of both inner and outer diameters without the need for separate measurements, significantly saving time and improving measurement efficiency. Furthermore, the high precision of pneumatic measurement ensures the accuracy of the workpiece measurement.

[0004] Similar to the pneumatic gauges described above, traditional pneumatic gauges currently employ a direct circumferential measurement method. During measurement, the product is manually placed into the chamber of the pneumatic gauge and rotated once to measure the full circumference. However, this traditional structure of pneumatic gauges has sharp edges in its clearance structure. Even with rounded edges, it is difficult to avoid scratching the product surface, thus affecting the surface quality and failing to meet the high-precision dimensional requirements and stringent surface quality standards for the outer diameter of oil pump products. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a pneumatic measuring instrument test stand for oil pump peripheral testing that does not easily damage the product surface.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a test stand for a pneumatic measuring instrument for testing the outer periphery of an oil pump, including a test base, a pair of parallel and opposite test arms and a pair of guide blocks;

[0007] The detection base is provided with a raised workpiece placement platform and a positioning block on its upper part;

[0008] The detection arms are located on both sides of the workpiece placement table;

[0009] The positioning block is located on the front side of the workpiece placement stage and between the two detection arms;

[0010] The guide block is fixed to the rear end of the detection arm, and the rear edge of the guide block is provided with a first inclined guide wall;

[0011] The inner walls of the detection arm and the guide block are parallel to each other, and the inner wall of the guide block is recessed into the inner wall of the detection arm.

[0012] The rear end of the detection arm is provided with a second inclined guide wall;

[0013] The inner wall of the detection arm is provided with at least three detection pores arranged in a longitudinal straight line.

[0014] The preferred technical solution of this utility model to solve the above-mentioned technical problems is: the detection arm is connected to the side wall of the positioning block and is suspended from the upper surface of the detection base.

[0015] The preferred technical solution of this utility model to solve the above-mentioned technical problems is as follows: the lower end of the detection arm is provided with a horizontally parallel air passage connector and a longitudinally extending air passage connector; the detection base is provided with a mounting hole coaxial with the air passage connector; the air passage connector extends into the mounting hole; and the internal air tube connecting the air passage connector extends into the mounting hole from top to top.

[0016] The preferred technical solution of this utility model to solve the above-mentioned technical problems is as follows: the side wall of the detection base is provided with a connecting component, the connecting component includes an inner connecting part extending toward the inside of the detection base and an outer connecting part extending toward the outside of the detection base, the inner connecting part is connected to the air circuit connector through an internal air pipe, and the outer connecting part is connected to the pneumatic measuring instrument main unit through an external air pipe.

[0017] The preferred technical solution of this utility model to solve the above-mentioned technical problems is as follows: the inner wall of the detection arm is provided with a horizontal protrusion, and the rear edge of the horizontal protrusion is provided with a third inclined guide wall.

[0018] The preferred technical solution of this utility model to solve the above-mentioned technical problems is: the inner edges of the upper end face of the detection arm and the guide block, as well as the edges of the rear edge of the guide block, are all rounded.

[0019] The preferred technical solution of this utility model to solve the above-mentioned technical problems is as follows: the workpiece placement platform has raised narrow edges on both sides and the front side, and the area between the narrow edges is recessed downward.

[0020] The preferred technical solution of this utility model to solve the above-mentioned technical problems is as follows: the positioning block is provided with two protrusions on the rear side, the rear end face of the protrusions is an inclined positioning surface, and the inclined positioning surfaces of the two protrusions are distributed in a figure-eight pattern.

[0021] The preferred technical solution of this utility model to solve the above-mentioned technical problems is: the lower surfaces of the guide block and the detection arm are flush.

[0022] The preferred technical solution of this utility model to solve the above-mentioned technical problem is: the length of the rear side of the workpiece placement stage extending beyond the guide block is greater than one-half of the distance between the two detection arms.

[0023] Compared with the prior art, the advantages of this utility model are: the oil pump workpiece is smoothly pushed to the detection position along the inclined guide wall, and the detection air hole can accurately detect the outer periphery of the workpiece. Since the inner walls of the guide block and the detection arm are parallel and the inner wall of the guide block is concave, the two inclined guide walls play a guiding and avoidance role, and the workpiece will not come into contact with the edge during the movement, effectively avoiding scratches and scrapping during the detection process, and improving the detection quality and pass rate of the workpiece. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the pneumatic measuring instrument test stand for testing the outer periphery of the oil pump, which is a preferred embodiment of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the pneumatic measuring instrument test stand for testing the outer periphery of the oil pump, which is a preferred embodiment of the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the pneumatic measuring instrument test stand for testing the outer periphery of the oil pump, which is a preferred embodiment of the present invention. Figure 3 ;

[0028] Figure 4 This is a schematic diagram of the pneumatic measuring instrument test stand for testing the outer periphery of the oil pump, which is a preferred embodiment of the present invention. Figure 4 ;

[0029] Figure 5 This is a diagram showing the usage status of the pneumatic gauge test stand for testing the outer periphery of the oil pump, according to a preferred embodiment of this utility model.

[0030] Figure 6 This is a test state diagram of the pneumatic gauge test bench for testing the outer periphery of the oil pump, which is a preferred embodiment of this utility model. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0032] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] This embodiment provides a pneumatic gauge test stand for testing the outer periphery of an oil pump, which is connected to the main unit of the pneumatic gauge to test the outer periphery of the oil pump.

[0035] like Figure 1-4 As shown, the test bench includes a test base 1, a pair of parallel and opposing test arms 2, and a pair of guide blocks 3. A raised workpiece placement platform 4 and a positioning block 5 are provided above the test base 1. The test arms 2 are located on both sides of the workpiece placement platform 4, and the positioning block 5 is located on the front side of the workpiece placement platform 4 and between the two test arms 2. The guide block 3 is fixed to the rear end of the test arm 2, and a first inclined guide wall 30 is provided on the rear edge of the guide block 3. The inner walls of the test arm 2 and the guide block 3 are parallel to each other, and the inner wall of the guide block 3 is recessed into the inner wall of the test arm 2. A second inclined guide wall 20 is provided at the rear end of the test arm 2, and at least three longitudinally arranged test vents 21 are provided on the inner wall of the test arm 2.

[0036] The oil pump workpiece 100 is smoothly pushed to the detection position along the inclined guide wall, and the detection air hole 21 can accurately detect the outer periphery of the workpiece. Since the inner walls of the guide block 3 and the detection arm 2 are parallel and the inner wall of the guide block 3 is concave, the two inclined guide walls play a guiding and avoidance role. The workpiece will not come into contact with the edge during the movement, effectively avoiding scratches and scrapping during the detection process, and improving the detection quality and pass rate of the workpiece.

[0037] like Figure 1-3As shown in Figures 5-6, the workpiece placement platform 4 has raised narrow edges 40 on both sides and the front side, forming a downwardly recessed area between the narrow edges 40. This design provides a stable placement platform for the workpiece, ensuring the stability of the oil pump workpiece 100 during the testing process. This design reduces friction during workpiece movement, avoids frictional damage, and also makes it easier to control the levelness of the oil pump workpiece 100.

[0038] like Figure 1-3 As shown in Figure 6, the rear side of the positioning block 5 is provided with two protrusions 51, and the rear end face of the protrusions 51 is an inclined positioning surface 50. The inclined positioning surfaces 50 of the two protrusions 51 are distributed in a figure-eight pattern. When the oil pump workpiece 100 enters the detection position between the detection arms 2 along the workpiece placement table 4, the front sides of the workpiece abut against the inclined positioning surface 50, and the detection air hole 21 is located exactly at the diameter of the oil pump workpiece 100. At this time, rotating the workpiece can detect the entire outer circumference of the oil pump workpiece 100.

[0039] like Figure 1 , 3 As shown, the detection arm 2 is connected to the side wall of the positioning block 5 and is suspended above the upper surface of the detection base 1. The guide block 3 is flush with the lower surface of the detection arm 2. This design allows the detection arm 2 to form a suspended detection space on the workpiece placement stage 4, facilitating the placement and movement of the workpiece. This suspended design also provides space for pipeline connections.

[0040] like Figure 1 , 3 As shown, the lower end of the detection arm 2 is provided with horizontally parallel and longitudinally extending air passage connectors 6. The detection base 1 is provided with mounting holes 8 coaxial with the air passage connectors 6. The air passage connectors 6 extend into the mounting holes 8, and the internal air tubes connecting the air passage connectors 6 extend into the mounting holes 8 from top to bottom. The coaxial design of the air passage connectors 6 and the mounting holes 8, as well as the connection method of the internal air tubes, ensure that the internal air tubes are supported, and the connection is protected by the mounting holes 8, ensuring the stability and sealing of the air passage and preventing air leakage.

[0041] like Figure 2 , 4 As shown, the side wall of the testing base 1 is provided with a connecting assembly 9, which includes an inner connecting part 91 extending inward toward the testing base 1 and an outer connecting part 92 extending outward toward the testing base 1. The inner connecting part 91 is connected to the air path connector 6 via an internal air pipe, and the outer connecting part 92 is connected to the pneumatic measuring instrument main unit via an external air pipe. This design realizes the air path connection between the testing platform and the pneumatic measuring instrument main unit.

[0042] like Figure 1-3As shown in Figures 5-6, the inner wall of the detection arm 2 is provided with a horizontal protrusion 22, and the rear edge of the horizontal protrusion 22 is provided with a third inclined guide wall 10. This design further optimizes the workpiece's guiding path, enabling the workpiece to move more smoothly to the detection position. The horizontal protrusion 22 matches the annular groove of the oil pump, which can play a guiding role, providing a smoother guiding path for the workpiece, reducing the shaking and deviation of the workpiece during movement, and further improving the accuracy and reliability of the detection. The third inclined guide wall 10 can guide and avoid the annular bottom of the annular groove, effectively preventing damage to the workpiece during the detection process.

[0043] like Figure 1 , 3 As shown, at least one detection vent 21 is provided at the horizontal protrusion 22, so that the outer periphery of the annular bottom of the annular groove can also be detected.

[0044] like Figure 1-3 As shown, the inner edges of the upper end face of the detection arm 2 and the guide block 3, as well as the rear edge of the guide block 3, are all rounded. This design further eliminates the potential risk of the edges scratching the workpiece, protects the surface quality of the oil pump workpiece 100, and reduces the workpiece scrap rate.

[0045] like Figure 1-3 As shown in Figure 5, the rear side of the workpiece placement stage 4 extends beyond the guide block 3 by more than half the distance between the two detection arms 2. This design provides sufficient placement space for the workpiece, ensuring that the oil pump workpiece 100 can be stably placed on the workpiece placement stage 4 when it enters between the guide blocks 3. This ensures that the oil pump workpiece 100 remains stable during movement and detection.

[0046] This paper introduces the pneumatic measuring instrument test stand for oil pump peripheral testing provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pneumatic measuring instrument test stand for testing the outer periphery of an oil pump, characterized in that: It includes a detection base, a pair of parallel and opposite detection arms, and a pair of guide blocks; The detection base is provided with a raised workpiece placement platform and a positioning block on its upper part; The detection arms are located on both sides of the workpiece placement table; The positioning block is located on the front side of the workpiece placement stage and between the two detection arms; The guide block is fixed to the rear end of the detection arm, and the rear edge of the guide block is provided with a first inclined guide wall; The inner walls of the detection arm and the guide block are parallel to each other, and the inner wall of the guide block is recessed into the inner wall of the detection arm. The rear end of the detection arm is provided with a second inclined guide wall; The inner wall of the detection arm is provided with at least three detection pores arranged in a longitudinal straight line.

2. The oil pump peripheral testing pneumatic gauge test bench according to claim 1, characterized in that: The detection arm is connected to the side wall of the positioning block and is suspended from the upper surface of the detection base.

3. The test bench for testing the pneumatic gauge of the oil pump peripheral as described in claim 1, characterized in that: The lower end of the detection arm is provided with horizontally parallel and longitudinally extended air passage connectors. The detection base is provided with mounting holes coaxial with the air passage connectors. The air passage connectors extend into the mounting holes, and the internal air tubes connecting the air passage connectors extend into the mounting holes from top to top.

4. The oil pump peripheral testing pneumatic gauge test bench according to claim 3, characterized in that: The side wall of the detection base is provided with a connecting component, which includes an inner connecting part extending toward the inside of the detection base and an outer connecting part extending toward the outside of the detection base. The inner connecting part is connected to the air circuit connector through an internal air pipe, and the outer connecting part is connected to the pneumatic measuring instrument main unit through an external air pipe.

5. The test bench for pneumatic measuring instruments for testing the outer periphery of an oil pump according to claim 1, characterized in that: The inner wall of the detection arm is provided with a horizontal protrusion, and the rear edge of the horizontal protrusion is provided with a third inclined guide wall.

6. The test bench for testing the pneumatic gauge of the oil pump peripheral as described in claim 1, characterized in that: The inner edges of the upper end faces of the detection arm and the guide block, as well as the rear edge of the guide block, are all rounded.

7. The test bench for pneumatic measuring instruments for testing the outer periphery of an oil pump according to claim 1, characterized in that: The workpiece placement platform has raised narrow edges on both sides and the front side, and the area between the narrow edges is recessed downward.

8. The test bench for testing the pneumatic gauge of the oil pump peripheral as described in claim 1, characterized in that: The positioning block has two protrusions on its rear side, and the rear end face of the protrusions is an inclined positioning surface. The inclined positioning surfaces of the two protrusions are distributed in a figure-eight pattern.

9. The test bench for pneumatic measuring instrument for oil pump peripheral testing according to claim 2, characterized in that: The lower surfaces of the guide block and the detection arm are flush.

10. The test bench for pneumatic measuring instruments for testing the outer periphery of an oil pump according to claim 2, characterized in that: The length of the rear side of the workpiece placement stage extending beyond the guide block is greater than half the distance between the two detection arms.

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