Intake resonant cavity assembly testing fixture

Abstract

The utility model relates to the technical field of automobile part detection tools, in particular to an air inlet resonant cavity assembly detection tool which comprises a base, a first supporting mechanism, a first positioning mechanism, a second positioning mechanism, a third positioning mechanism and a detection pin. The first supporting mechanism, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism are sequentially fixed to the base, the top of the first supporting mechanism abuts against the middle of an air inlet resonant cavity body, and the first positioning mechanism is connected with a mounting hole in one side of the air inlet resonant cavity body in a clamped mode. The second positioning mechanism is connected with a pipe opening of an air inlet resonant cavity air pipe in a clamped mode, the top of the third positioning mechanism is provided with a positioning hole corresponding to a mounting hole in the other side of an air inlet resonant cavity body in position, and one end of the detection pin penetrates through the mounting hole in the other side of the air inlet resonant cavity body and is inserted into the positioning hole. According to the utility model, the quality of the air inlet resonant cavity assembly can be detected, the detection efficiency is high, and the detection cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts inspection tools, and more specifically, to an intake resonant cavity assembly inspection tool. Background Art

[0002] A car contains tens of thousands of parts. Ensuring that the geometric dimensions and tolerances of these parts meet design requirements is crucial to both part assembly and vehicle performance. This requires monitoring the dimensions and tolerances of these parts to ensure they meet design requirements. For parts produced in small batches, coordinate measuring machines (CMMs) can be used to inspect their geometric dimensions and tolerances. For parts produced in large batches, specialized inspection tools, known as gaging fixtures, are required.

[0003] As an important part of the automobile, the intake resonant cavity assembly is fixed to the car body through two mounting holes. If there is a large deviation in the relative positions of the two mounting holes, it will not be able to be installed on the car body. The intake resonant cavity assembly is also equipped with an air pipe. If the air pipe interferes with the car body sheet metal, long-term wear will cause the air pipe to wear out, resulting in air leakage, increased intake noise, and affecting the function and NVH performance of the entire vehicle. Therefore, the intake resonant cavity assembly is subject to a full inspection.

[0004] Prior art Chinese patent CN201921389219.X discloses a three-coordinate measuring machine specifically for automobile parts testing, relating to the field of automobile parts testing technology, comprising: a workbench, an XYZ three-axis motion mechanism, a probe, a turntable, and a drive assembly; the workbench is provided with the XYZ three-axis motion mechanism, the XYZ three-axis motion mechanism is mounted on the XYZ three-axis motion mechanism, and the XYZ three-axis motion mechanism is used to drive the probe to reciprocate horizontally, longitudinally, and vertically; the turntable is rotatably mounted on the workbench, the drive assembly is mounted on the workbench and drives the turntable to rotate, and the turntable is detachably mounted with an object to be measured. This technical solution detachably fixes the object to be measured on an automatically rotating turntable, making it convenient for staff to move the object to be measured to a position where the probe can easily measure. However, the detection efficiency is low and it is not suitable for large quantities of automobile parts. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcoming of low detection efficiency of the measuring instrument in the prior art. The utility model proposes an intake resonant cavity assembly inspection tool, which can quickly detect the installation accuracy of the intake resonant cavity assembly and has high detection efficiency.

[0006] To achieve the above-mentioned purpose, the present scheme provides an intake resonant cavity assembly inspection fixture, including a base, a first supporting mechanism, a first positioning mechanism, a second positioning mechanism, a third positioning mechanism and an inspection pin. The first supporting mechanism, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism are fixed on the base in sequence. The top of the first supporting mechanism abuts against the middle part of the intake resonant cavity body. The first positioning mechanism is clamped with the mounting hole on one side of the intake resonant cavity body. The second positioning mechanism is clamped with the pipe mouth of the intake resonant cavity air pipe. The top of the third positioning mechanism is provided with a positioning hole corresponding to the position of the mounting hole on the other side of the intake resonant cavity body. One end of the inspection pin passes through the mounting hole on the other side of the intake resonant cavity body and is inserted into the positioning hole.

[0007] In the present technical solution, the first supporting mechanism, the first positioning mechanism, the second positioning mechanism, and the third positioning mechanism are respectively arranged according to the installation position of the intake resonant cavity assembly. During the inspection, the staff first pulls out the inspection pin, places the middle part of the intake resonant cavity body on the first supporting mechanism, adjusts the position of the intake resonant cavity body, and engages the mounting hole on one side of the intake resonant cavity body with the first positioning mechanism, then adjusts the position of the intake resonant cavity air pipe, engages the intake resonant cavity air pipe with the second positioning mechanism, and then aligns the mounting hole on the other side of the intake resonant cavity body with the positioning hole, and finally inserts the inspection pin into the mounting hole and the positioning hole on the other side of the intake resonant cavity body. If the inspection pin can be fully inserted, the intake resonant cavity assembly is qualified. If the inspection pin cannot be fully inserted, the intake resonant cavity assembly is unqualified. The inspection fixture can simulate the installation process of the intake resonant cavity assembly, which not only detects the accuracy of its two mounting holes, but also detects the installation position of the air pipe.

[0008] As a preferred solution, in order to engage with the mounting hole on one side of the intake resonance cavity body, a first protrusion is provided on the first positioning mechanism, and the first protrusion is adapted to the mounting hole on one side of the intake resonance cavity body. The outer diameter of the first protrusion is adapted to the inner diameter of the mounting hole on one side of the intake resonance cavity body, and the dimensional accuracy of the mounting hole is judged by the engagement between the first protrusion and the mounting hole on one side of the intake resonance cavity body.

[0009] As a preferred solution, in order to detect whether the installation position of the intake resonance cavity air pipe meets the standards, a second protrusion is provided on the second positioning mechanism. The second protrusion is adapted to the pipe mouth of the intake resonance cavity air pipe, which can effectively detect and ensure that the installation position of the intake resonance cavity air pipe is accurate, thereby ensuring the normal operation of the intake resonance cavity assembly. The outer diameter of the second protrusion and the inner diameter of the pipe mouth of the intake resonance cavity air pipe can be used to judge the dimensional accuracy of the intake resonance cavity air pipe through the clamping condition of the second protrusion and the intake resonance cavity air pipe.

[0010] As a preferred solution, in order to roughly position the mounting hole on the other side of the intake resonance cavity body, the top of the third positioning mechanism has an abutment surface adapted to the mounting hole on the other side of the intake resonance cavity body, and the positioning hole is provided on the abutment surface.

[0011] As a preferred solution, one end of the inspection pin has a retaining ring, a first shaft segment and a second shaft segment which are coaxially arranged in sequence. The size of the first shaft end is adapted to the size of the mounting hole on the other side of the air intake resonance cavity body, the size diameter of the second shaft segment is adapted to the size of the positioning hole, and the end of the second shaft end away from the first shaft end is provided with a chamfer to make the inspection pin easier to insert. The length and outer diameter of the first shaft end are respectively adapted to the length and inner diameter of the mounting hole on the other side of the air intake resonance cavity body, and the length and outer diameter of the second shaft end are respectively adapted to the length and inner diameter of the positioning hole. When the inspection pin is inserted into the mounting hole and the positioning hole on the other side of the air intake resonance cavity body, if the retaining ring abuts against the abutment surface, it can be judged that the inspection pin is fully inserted, thereby judging that the air intake resonance cavity assembly has passed the inspection.

[0012] As a preferred solution, in order to protect the third positioning mechanism, a bushing is embedded in the third positioning mechanism, and the positioning hole is provided on the bushing. The bushing increases the structural strength of the third positioning mechanism to avoid cracking.

[0013] As a preferred solution, in order to support the air intake resonance cavity air pipe, a second supporting mechanism is fixed on the base, and the top of the second supporting mechanism is provided with a semicircular groove adapted to the air intake resonance cavity air pipe. The semicircular groove can simulate the installation environment of the air intake resonance cavity air pipe while providing support.

[0014] As a preferred solution, in order to prevent the intake resonant cavity assembly from moving, two clamping mechanisms are fixed on the base, and the two clamping mechanisms correspond to the positions of the first positioning mechanism and the third positioning mechanism respectively. The two clamping mechanisms clamp the two sides of the intake resonant cavity body respectively. The two clamping mechanisms can quickly clamp the two sides of the intake resonant cavity body to avoid shaking and affecting the detection efficiency.

[0015] As a preferred solution, in order to realize the clamping function, the two clamping mechanisms have the same structure and both include a bracket, a clamping claw, a connecting rod and a handle. The bracket is fixed on the base, and the clamping claw and the handle are respectively connected to the top of the bracket. One end of the connecting rod is connected to the handle, and the other end of the connecting rod is connected to the clamping claw. The staff rotates the handle, and under the drive of the connecting rod, each clamping claw cooperates with the top of the first positioning mechanism and the third positioning mechanism to clamp the two sides of the intake resonance cavity body.

[0016] As a preferred solution, in order to facilitate the movement of the inspection tool, handles are provided on both sides of the base.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The inspection fixture of the utility model is preliminarily positioned by the first supporting mechanism, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism adapted to the installation position of the intake resonant cavity assembly, and then the inspection pin is inserted into the position of the positioning hole for accuracy detection.

[0019] 2. The inspection fixture of the utility model can simulate the installation environment through the first supporting mechanism, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism, and is fixed by two clamping mechanisms. It has high detection efficiency and can meet the comprehensive detection of large quantities of intake resonance cavity assemblies.

[0020] 3. The inspection pin is matched with two shaft sections corresponding to the mounting holes and positioning holes on the other side of the intake resonance cavity body, which not only detects the size progress of the mounting hole on this side but also detects the relative size accuracy of the two mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the intake resonant cavity assembly inspection fixture in use;

[0022] Figure 2 yes Figure 1 Schematic diagram of another perspective;

[0023] Figure 3 This is a schematic structural diagram of the intake resonant cavity assembly inspection fixture of the utility model;

[0024] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0025] Figure 5 It is a structural diagram of inspection and cancellation;

[0026] Figure 6 It is the structural intention diagram of the clamping mechanism;

[0027] Figure 7 It is a structural diagram of the intake resonance cavity assembly.

[0028] In the figure: the air intake resonant cavity body 1; the air intake resonant cavity air pipe 11; the base 2; the handle 21; the first supporting mechanism 3; the first positioning mechanism 4; the first protrusion 41; the second positioning mechanism 5; the second protrusion 51; the third positioning mechanism 6; the positioning hole 61; the bushing 62; the abutment surface 63; the inspection pin 7; the retaining ring 71; the first shaft section 72; the second shaft section 73; the second supporting mechanism 8; the semicircular groove 81; the clamping mechanism 9; the bracket 91; the clamping claw 92; the connecting rod 93; and the handle 94. DETAILED DESCRIPTION

[0029] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0032] Example 1:

[0033] like Figures 1 to 5 As shown, this embodiment provides an intake resonant cavity assembly inspection fixture, including a base 2, a first supporting mechanism 3, a first positioning mechanism 4, a second positioning mechanism 5, a third positioning mechanism 6 and an inspection pin 7. The first supporting mechanism 3, the first positioning mechanism 4, the second positioning mechanism 5 and the third positioning mechanism 6 are fixed on the base 2 in sequence. The top of the first supporting mechanism 3 abuts against the middle of the intake resonant cavity body 1, the first positioning mechanism 4 is engaged with the mounting hole on one side of the intake resonant cavity body 1, and the second positioning mechanism 5 is engaged with the pipe mouth of the intake resonant cavity air pipe 11. The top of the third positioning mechanism 6 is provided with a positioning hole 61 corresponding to the position of the mounting hole on the other side of the intake resonant cavity body 1, and one end of the inspection pin 7 passes through the mounting hole on the other side of the intake resonant cavity body 1 and is inserted into the positioning hole 61. A second supporting mechanism 8 is also fixed on the base 2, and the top of the second supporting mechanism 8 is provided with a semicircular groove 81 adapted to the intake resonant cavity air pipe 11.

[0034] In this embodiment, the intake resonance cavity assembly consists of an intake resonance cavity body 1 and an intake resonance cavity air pipe 11, wherein the intake resonance cavity body 1 has mounting holes on both sides connected to the vehicle body, the intake resonance cavity air pipe 11 is connected to the air filter, the first supporting mechanism 3, the first positioning mechanism 4, the second positioning mechanism 5, the third positioning mechanism 6 and the second supporting mechanism 8 respectively correspond to various positions at the bottom of the intake resonance cavity assembly and are vertically fixed on the base 2 by fasteners, the first supporting mechanism 3, the first positioning mechanism 4, the second positioning mechanism 5, the third positioning mechanism 6 and the second supporting mechanism 8 are made of steel, which has the advantages of high strength and wear resistance, and is suitable for the inspection of large quantities of parts.

[0035] Specifically, a first protrusion 41 is provided on the first positioning mechanism 4 , and the first protrusion 41 is adapted to the mounting hole on one side of the intake resonance cavity body 1 .

[0036] In this embodiment, the first protrusion 41 is a cylindrical structure, and its outer diameter is adapted to the inner diameter of the mounting hole on one side of the intake resonance cavity body 1 .

[0037] Specifically, a second protrusion 51 is provided on the second positioning mechanism 5 , and the second protrusion 51 is adapted to the pipe opening of the intake resonance cavity air pipe 11 .

[0038] In this embodiment, the shape of the second protrusion 51 matches the shape of the pipe opening of the intake resonance cavity air pipe 11 , and the second positioning mechanism 5 can simulate the installation position of the intake resonance cavity air pipe 11 .

[0039] Specifically, the top of the third positioning mechanism 6 has an abutting surface 63 adapted to the mounting hole on the other side of the intake resonance cavity body 1 , and the positioning hole 61 is provided on the abutting surface 63 .

[0040] In this embodiment, since the other side of the intake resonance cavity body 1 is an inclined structure, the abutting surface 63 on the third positioning mechanism 6 is also inclined accordingly.

[0041] Specifically, a bushing 62 is embedded in the third positioning mechanism 6 , and the positioning hole 61 is provided on the bushing 62 .

[0042] In this embodiment, a socket is provided on the top of the third positioning mechanism 6 , and a bushing 62 is installed in the socket. The strength of the bushing 62 is higher than that of the third positioning mechanism 6 , and can cope with multiple insertion tests of the inspection pin 7 .

[0043] Specifically, one end of the inspection pin 7 has a retaining ring 71, a first shaft segment 72 and a second shaft segment 73 which are coaxially arranged in sequence. The size of the first shaft end is adapted to the size of the mounting hole on the other side of the intake resonance cavity body 1, the diameter of the second shaft segment 73 is adapted to the size of the positioning hole 61, and the end of the second shaft end away from the first shaft end is provided with a chamfer.

[0044] In this embodiment, the chamfer can facilitate the insertion of the inspection pin 7 and improve the inspection efficiency. The inspection pin 7 is made of aluminum, is light in weight, and is easy for staff to operate.

[0045] Example 2:

[0046] This embodiment is similar to embodiment 1, except that, in this embodiment, Figures 1 to 3 、 Figure 6 As shown, two clamping mechanisms 9 are fixed on the base 2 , respectively. The two clamping mechanisms 9 correspond to the positions of the first positioning mechanism 4 and the third positioning mechanism 6 , respectively. The two clamping mechanisms 9 clamp the two sides of the intake resonance cavity body 1 .

[0047] Specifically, the two clamping mechanisms 9 have the same structure and both include a bracket 91, a clamping jaw 92, a connecting rod 93 and a handle 94. The bracket 91 is fixed on the base 2, and the clamping jaw 92 and the handle 94 are respectively connected to the top of the bracket 91. One end of the connecting rod 93 is connected to the handle 94, and the other end of the connecting rod 93 is connected to the clamping jaw 92.

[0048] Example 3:

[0049] This embodiment is similar to embodiment 1, except that, in this embodiment, Figures 1 to 3 As shown, handles 21 are provided on both sides of the base 2.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An air intake resonant cavity assembly inspection fixture, characterized in that: The invention comprises a base (2), a first supporting mechanism (3), a first positioning mechanism (4), a second positioning mechanism (5), a third positioning mechanism (6) and a check pin (7); the first supporting mechanism (3), the first positioning mechanism (4), the second positioning mechanism (5) and the third positioning mechanism (6) are fixed on the base (2) in sequence; the top of the first supporting mechanism (3) abuts against the middle of the air intake resonance cavity body (1); the first positioning mechanism (4) is engaged with the mounting hole on one side of the air intake resonance cavity body (1); the second positioning mechanism (5) is engaged with the pipe mouth of the air intake resonance cavity air pipe (11); the top of the third positioning mechanism (6) is provided with a positioning hole (61) corresponding to the mounting hole position on the other side of the air intake resonance cavity body (1); one end of the check pin (7) passes through the mounting hole on the other side of the air intake resonance cavity body (1) and is inserted into the positioning hole (61).

2. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: The first positioning mechanism (4) is provided with a first protrusion (41), and the first protrusion (41) is adapted to a mounting hole on one side of the intake resonant cavity body (1).

3. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: The second positioning mechanism (5) is provided with a second protrusion (51), and the second protrusion (51) is adapted to the pipe opening of the air intake resonance cavity air pipe (11).

4. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: The top of the third positioning mechanism (6) has an abutting surface (63) adapted to the mounting hole on the other side of the intake resonance cavity body (1), and the positioning hole (61) is provided on the abutting surface (63).

5. The air intake resonant cavity assembly inspection fixture according to claim 4, characterized in that: One end of the inspection pin (7) has a retaining ring (71), a first shaft section (72) and a second shaft section (73) which are coaxially arranged in sequence. The size of the first shaft section is adapted to the size of the mounting hole on the other side of the intake resonant cavity body (1). The diameter of the second shaft section (73) is adapted to the size of the positioning hole (61). The end of the second shaft section away from the first shaft end is provided with a chamfer.

6. The air intake resonant cavity assembly inspection fixture according to claim 4, characterized in that: A bushing (62) is embedded in the third positioning mechanism (6), and the positioning hole (61) is provided on the bushing (62).

7. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: A second supporting mechanism (8) is fixed on the base (2), and a semicircular groove (81) adapted to the air intake resonance cavity air pipe (11) is provided on the top of the second supporting mechanism (8).

8. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: Two clamping mechanisms (9) are fixed on the base (2), respectively. The two clamping mechanisms (9) correspond to the positions of the first positioning mechanism (4) and the third positioning mechanism (6), respectively. The two clamping mechanisms (9) clamp the two sides of the intake resonant cavity body (1).

9. The air intake resonant cavity assembly inspection fixture according to claim 8, characterized in that: The two clamping mechanisms (9) have the same structure and both include a bracket (91), a clamping claw (92), a connecting rod (93) and a handle (94). The bracket (91) is fixed on the base (2). The clamping claw (92) and the handle (94) are respectively connected to the top of the bracket (91). One end of the connecting rod (93) is connected to the handle (94) in a rotational manner, and the other end of the connecting rod (93) is connected to the clamping claw (92) in a rotational manner.

10. The air intake resonant cavity assembly inspection fixture according to claim 1, characterized in that: Handles (21) are respectively provided on both sides of the base (2).

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