Automobile water pump shell verification clamp

Abstract

The utility model provides an automobile water pump housing verification clamp, which comprises a box body, an extrusion mechanism and a clamping mechanism, the clamping mechanism is used for clamping an inner hole or an outer side of a water pump housing, the extrusion mechanism is used for blocking the inner hole of the water pump housing, and a sealing cavity is formed in the water pump housing. The extrusion mechanism is provided with a communicating pipe connected with external pressure equipment, the communicating pipe communicates with the sealing cavity through the extrusion mechanism, and the extrusion mechanism extrudes the water pump shell and conveys a pressure medium into the sealing cavity. The box body comprises a cabinet body and a cabinet door pivotally connected to one side of the cabinet body, a sealing element is arranged between the cabinet door and the cabinet body, so that the cabinet body and the cabinet door form a sealed verification space, and the cabinet door is made of a transparent material. According to the utility model, the purpose of automatically and statically testing the sealing performance of the water pump housing is achieved, and the detection effect is improved. And dynamic testing is carried out in the verification space, and whether the water pump cover body fails or not can be visually detected through the transparent cabinet door.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile water pump detection equipment, in particular to an automobile water pump housing calibration fixture. Background Art

[0002] The automotive water pump is a crucial component in the engine cooling system. When inspecting the water pump housing, the airtightness test is a common test item. This test is a key step in ensuring the quality of automotive water pumps. The sealing performance of the water pump housing is closely related to the performance, service life, and safety of the water pump.

[0003] Generally speaking, the common methods for conducting water pump housing sealing performance tests include visual inspection, static testing, dynamic testing, packaging testing, durability testing and other items. Among them, visual inspection is used to detect surface defects of the water pump housing, such as obvious pits and cracks. The static test is to cover the water pump housing with a sealant to seal the opening of the water pump housing (such as a sealing gasket), and then apply a certain pressure in the sealing cavity of the water pump housing, and use visual inspection to observe whether the water pump housing has signs of leakage. The dynamic test is to connect the water pump housing to the water pump, simulate the pressure and temperature conditions when the water pump is running, and put the water pump into the water tank to observe whether the water pump housing has any leakage.

[0004] Most existing testing equipment is designed for individual testing of pump casings. Dynamic and package testing currently requires placing the entire pump in a water tank, requiring operators to move it between different testing stages, increasing both the testing equipment and the workload. Furthermore, once the pump is placed in the tank, it will shake slightly after startup, requiring manual pressure to secure it. Furthermore, minute cracks against the tank bottom may not produce noticeable bubbles and may be overlooked, leading to the risk of failures going undetected. Utility Model Content

[0005] In view of this, the utility model aims to propose a car water pump housing calibration fixture that can adapt to the inspection conditions of the water pump housing in each inspection stage, and can fix the water pump during dynamic testing and packaging testing, and can avoid undetected water pump failure positions, thereby improving the inspection effect.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A vehicle water pump housing calibration fixture comprises a housing, an extrusion mechanism disposed at the upper end of the housing, and a clamping mechanism disposed at the bottom of the housing and extending upward, the clamping mechanism being used to clamp the inner hole or outer side of the water pump housing, the extrusion mechanism being used to seal the inner hole of the water pump housing, thereby forming a sealed cavity within the water pump housing;

[0008] The extrusion mechanism is provided with a connecting pipe connected to an external pressure device, the connecting pipe is connected to the sealing cavity via the extrusion mechanism, the extrusion mechanism squeezes the water pump housing and delivers pressure medium into the sealing cavity;

[0009] The box includes a cabinet body and a cabinet door pivotally connected to one side of the cabinet body. A sealing member is provided between the cabinet door and the cabinet body so that the cabinet body and the cabinet door form a sealed calibration space. The cabinet door is made of a transparent material.

[0010] Furthermore, the clamping mechanism includes a base fixedly connected to the bottom of the cabinet, a driving disk pivotally connected to the base, a plurality of clamping mechanisms evenly distributed on the driving disk, and a power mechanism for driving the driving disk to rotate;

[0011] The driving disc is evenly circumferentially formed with sliding grooves corresponding to the clamping mechanisms. When the driving disc rotates, the clamping mechanisms slide along the sliding grooves and move away from or closer to each other.

[0012] Furthermore, the clamping mechanism includes a first bearing slidably connected to the slide groove, a slide rail provided on the first bearing, a clamping arm pivotally connected to the slide rail, and a first driving portion driving the clamping arm to rotate;

[0013] A positioning plate is spaced apart above the driving plate, and the positioning plate passes through the driving plate and is fixedly connected to the base;

[0014] A positioning groove adapted to the slide rail is formed on the positioning disc. When the driving disc rotates, the slide rails move closer to or farther away from each other along the positioning groove.

[0015] Furthermore, the chute adopts an arc-shaped long chute structure, and the width of the chute is adapted to the diameter of the first bearing;

[0016] One end of the chute is close to the center of the driving disk, and the other end is close to the outer side of the driving disk. The center points of both ends of the chute are concentric with the driving disk.

[0017] Furthermore, the power mechanism includes a guide rail connected to the cabinet, a slider slidably connected to the guide rail, a push block connected to the slider, and a second driving part that drives the slider to slide;

[0018] A driving member protruding downward is provided on one side of the driving disc away from the clamping mechanism, and a rectangular groove for accommodating the sliding of the driving member is provided on the pushing block, and the rectangular groove is arranged perpendicular to the guide rail.

[0019] Furthermore, the driving member includes a circular shaft connected to the driving disc, and a second bearing sleeved on the circular shaft, and the diameter of the second bearing is adapted to the groove width of the rectangular groove.

[0020] Furthermore, the cabinet is further provided with a horizontally arranged support plate, the support plate is provided with a through hole, and the edge of the water pump housing is overlapped on the support plate;

[0021] The squeezing mechanism applies pressure to the bottom of the water pump housing; and the clamping mechanism clamps the top of the water pump housing.

[0022] Furthermore, the extrusion mechanism includes a guide shaft provided between the support plate and the top plate of the cabinet, a guide block slidably connected to the guide shaft, and a third driving part connected to the guide block;

[0023] The guide block is connected with a pressurizing portion, and the connecting pipe is arranged on the pressurizing portion.

[0024] Furthermore, the guide shaft is extended along the height direction of the cabinet, and the third driving part drives the guide block to slide up and down, so that the pressurizing part is close to or away from the water pump housing.

[0025] Furthermore, the pressurizing portion includes a support plate arranged parallel to the support plate, a connecting tube connected below the support plate, and a sealing gasket connected below the connecting tube;

[0026] The sealing gasket is concentrically arranged with the inner hole of the water pump housing;

[0027] The sealing gasket is adapted to the inner hole at the bottom of the water pump housing, one end of the connecting pipe passes through the cabinet top plate and is connected to the external pressurizing device, and the other end of the connecting pipe passes through the support plate, the connecting tube, and the sealing gasket;

[0028] The sealing gasket is detachably connected to the connecting tube.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The automobile water pump housing calibration fixture described in this utility model secures the water pump housing in place by providing a clamping mechanism, seals and squeezes the inner hole of the water pump housing using an extrusion mechanism, transmits a pressure medium using an external pressure device, and allows the medium to enter the sealed cavity through a connecting pipe. After the cabinet body and cabinet door are sealed, water is injected into the calibration space. The mechanical and medium pressures are simultaneously applied to achieve the purpose of automatically statically testing the sealing of the water pump housing, thereby improving the detection effect. In addition, the fixture can also install the water pump and the housing while the clamping mechanism is clamping the water pump housing, thereby performing dynamic testing within the calibration space. The transparent cabinet door allows intuitive detection of water pump cover failure.

[0031] Furthermore, the slideway is designed as an arc-shaped slot to prevent jamming and interference between the slide rail and the positioning slot during the rotation of the drive disc, thereby improving the smoothness of the slideway. The end of the clamping arm has a flat section and an upwardly extending insertion section, which abuts the side wall of the inner hole. The flat section supports the water pump housing and helps level the water pump housing, ensuring more accurate press-in of the sealing gasket.

[0032] In addition, the outer side of the water pump housing is clamped. In this case, the support plate can be removed to facilitate the installation of the water pump and the water pump housing and to increase the installation space. An inspection cover is provided on the back panel of the cabinet body opposite to the cabinet door. When the water pump is assembled, the inspection cover is opened for easy installation. In some water pump assemblies, the water pump shaft needs to be inserted into the water pump housing. At this time, the clamping position of the clamping arm and the water pump housing can be adjusted by rotating the drive disk and driving the first drive unit. The water pump housing can be automatically raised a certain distance without the need for other auxiliary tools, which provides convenience for water pump installation and improves installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a perspective diagram of the automobile water pump housing calibration fixture according to an embodiment of the present invention, excluding the cabinet door, from a first perspective;

[0035] Figure 2 This is a perspective schematic diagram of the automobile water pump housing calibration fixture according to an embodiment of the present invention from a second perspective without the cabinet door;

[0036] Figure 3 This is a bottom view schematic diagram of the automobile water pump housing calibration fixture according to an embodiment of the present utility model;

[0037] Figure 4 for Figure 3 Schematic cross-sectional view at AA in the middle;

[0038] Figure 5 This is a connection diagram of the clamping mechanism according to an embodiment of the present utility model clamping the inner hole of the water pump housing;

[0039] Figure 6 This is a schematic diagram of the connection between the drive disc, the clamping mechanism, and the power mechanism according to an embodiment of the present utility model;

[0040] Figure 7 This is a schematic diagram of the three-dimensional structure of the clamping mechanism described in an embodiment of the present utility model.

[0041] Description of reference numerals:

[0042] 1. Box body; 2. Extrusion mechanism; 3. Clamping mechanism; 4. Water pump housing;

[0043] 101. Cabinet body; 102. Cabinet door; 103. Inspection cover;

[0044] 201, connecting pipe; 202, guide shaft; 203, guide block; 204, third driving unit; 205, pressurizing unit;

[0045] 301, base; 302, drive plate; 303, clamping mechanism; 304, power mechanism; 305, positioning plate;

[0046] 401, sealed cavity;

[0047] 1011, support plate; 1012, through hole;

[0048] 2051, support plate; 2052, connecting tube; 2053, sealing gasket;

[0049] 3021, chute; 3022, driving member;

[0050] 3031, first bearing; 3032, slide rail; 3033, clamping arm; 3034, first driving unit;

[0051] 3051, positioning groove;

[0052] 3041, guide rail; 3042, slider; 3043, push block; 3044, second drive unit;

[0053] 30331, plane section; 30332, extension section;

[0054] 30431, rectangular groove. DETAILED DESCRIPTION

[0055] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0056] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0058] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0059] This embodiment relates to a vehicle water pump housing calibration fixture, which includes a housing 1, a squeezing mechanism 2 disposed at the upper end of the housing 1, and a clamping mechanism 3 disposed at the bottom of the housing 1 and extending upward. The clamping mechanism 3 is used to clamp the inner hole or outer side of the water pump housing 4. The squeezing mechanism 2 is used to seal the inner hole of the water pump housing 4, forming a sealed cavity 401 within the water pump housing 4. The squeezing mechanism 2 is provided with a connecting pipe 201 connected to an external pressure device. The connecting pipe 201 is connected to the sealed cavity 401 via the squeezing mechanism 2. The squeezing mechanism 2 squeezes the water pump housing 4 and delivers pressure medium into the sealed cavity 401. The housing 1 includes a cabinet 101 and a cabinet door 102 pivotally connected to one side of the cabinet 101. A seal is provided between the cabinet door 102 and the cabinet 101, so that the cabinet 101 and the cabinet door 102 form a sealed calibration space. The cabinet door 102 is made of a transparent material.

[0060] The automobile water pump housing calibration fixture of this embodiment secures the water pump housing 4 in place by providing a clamping mechanism 3. The inner hole of the water pump housing 4 is sealed and squeezed into place by a squeezing mechanism 2. A pressure medium is transmitted via an external pressure device, which enters the sealed cavity 401 through a connecting pipe 201. After sealing the cabinet body 101 and the cabinet door 102, water is injected into the calibration space. The mechanical and medium pressures are applied simultaneously to achieve the purpose of automatically statically testing the sealing of the water pump housing 4, thereby improving the detection effect. Furthermore, the fixture can also be used to install the water pump and the housing while the clamping mechanism 3 is clamping the water pump housing 4, thereby performing dynamic testing within the calibration space. The transparent cabinet door 102 allows intuitive detection of water pump cover failure.

[0061] Based on the above overall introduction, an exemplary structure of the automobile water pump housing calibration fixture of this embodiment is as follows: Figures 1 to 2 As shown, the external pressurizing device of this embodiment utilizes an air compressor, and the pressure medium is compressed air, which enters the sealed cavity 401 through the sealing gasket 2053. The sealing gasket 2053 of this embodiment is made of a hard PVC material or nylon material to prevent deformation of the sealing gasket 2053 caused by excessive pressure. The water pump housing 4 of this embodiment has its conical end facing downward and its flat end facing upward, facilitating the extrusion of the extrusion mechanism 2 and the clamping of the clamping mechanism 3 below.

[0062] like Figures 1 to 4 As shown, the clamping mechanism 3 includes a base 301 fixedly connected to the bottom of the cabinet 101, a drive disk 302 pivotally connected to the base 301, a plurality of clamping mechanisms 303 evenly distributed around the drive disk 302, and a power mechanism 304 for rotating the drive disk 302. Slide grooves 3021 are evenly distributed around the drive disk 302, corresponding to the clamping mechanisms 303. When the drive disk 302 rotates, the clamping mechanisms 303 slide along the slide grooves 3021, moving away from or toward each other.

[0063] In this embodiment, to reduce costs and maintain stability, three clamping jaws 303 are used to clamp the bottom of the water pump housing 4. To enable faster calibration, before clamping the water pump housing 4, a small sealing gasket 2053 is first inserted into the small circular hole in the housing's inner hole, and then the housing is placed in the clamp for clamping.

[0064] like Figures 5 to 7As shown, the clamping mechanism 303 includes a first bearing 3031 slidably connected to the slide groove 3021, a slide rail 3032 disposed on the first bearing 3031, a clamping arm 3033 pivotally connected to the slide rail 3032, and a first driving portion 3034 that drives the clamping arm 3033 to rotate. A positioning plate 305 is spaced apart above the drive disk 302. The positioning plate 305 passes through the drive disk 302 and is fixedly connected to the base 301. The positioning plate 305 is formed with a positioning groove 3051 that matches the slide rail 3032. When the drive disk 302 rotates, the slide rails 3032 move closer to or farther from each other along the positioning groove 3051.

[0065] The first bearing 3031 of this embodiment adopts a deep groove ball bearing, and the slide rail 3032 is overlapped on the top of the driving disk 302. In order to reduce friction, the surfaces of the slide rail 3032 and the driving disk 302 are ground. Figures 5 to 7 As shown, the longitudinal section of the slide rail 3032 is formed into an I-shape, the positioning plate 305 is a circular sheet structure, and the positioning grooves 3051 are U-shaped and evenly distributed around the circumference and are adapted to the slide rail 3032 .

[0066] like Figure 1 and Figure 2 As shown, the first driving part 3034 adopts a telescopic cylinder, and each slide rail 3032 is provided with a telescopic cylinder for adjusting the angle of the clamping arm 3033. Figure 1 As shown in , the external structures of different shells are different. When the external shape of the shell is irregular, the end of the clamping arm 3033 can be clamped from the inner hole of the shell to position it. When the external shape of the shell is a regular conical shape, Figure 2 The clamping state is in the clamping state, that is, the outer side of the shell is clamped, and the clamping force is adjusted by the driving force of the first driving part 3034.

[0067] As Figure 7 As described above, the end of the clamping arm 3033 has a flat section 30331 and an upwardly extending insertion section 30332, which abuts against the side wall of the inner hole through the insertion section 30332. The flat section 30331 is used to support the water pump housing 4 and to make the water pump housing 4 level, thereby ensuring that the pressing effect of the sealing gasket 2053 is more accurate.

[0068] In addition, if Figure 5 and Figure 6As shown, the slide groove 3021 adopts an arc-shaped elongated groove structure, and the width of the slide groove 3021 matches the diameter of the first bearing 3031. One end of the slide groove 3021 is close to the center of the drive disk 302, and the other end is close to the outside of the drive disk 302. The center points of both ends of the slide groove 3021 are concentric with the drive disk 302. The configuration of the slide groove 3021 as an arc-shaped elongated groove structure prevents jamming and interference between the slide rail 3032 and the positioning groove 3051 during the rotation of the drive disk 302, thereby improving the smoothness of the movement of the slide rail 3032.

[0069] like Figure 1 and Figure 4 As shown, the power mechanism 304 includes a guide rail 3041 connected to the cabinet 101, a slider 3042 slidably connected to the guide rail 3041, a push block 3043 connected to the slider 3042, and a second driving portion 3044 that drives the slider 3042. A downwardly protruding driving member 3022 is provided on the side of the driving disk 302 away from the clamping mechanism 303. The push block 3043 is provided with a rectangular groove 30431 that accommodates the sliding movement of the driving member 3022. The rectangular groove 30431 is arranged perpendicular to the guide rail 3041.

[0070] In terms of specific structure, Figure 1 and Figure 4 As shown, a long, rectangular mounting block is connected to the bottom of the cabinet 101. A guide rail 3041 is bolted to the mounting block, extending along the width of the cabinet 101. A second drive unit 3044, employing a telescopic cylinder, is secured to the bottom of the cabinet 101 via a cylinder mounting base. The power output of the second drive unit 3044 is connected to a slider 3042. The slider 3042 is bolted to a push block 3043.

[0071] Still Figure 1 and Figure 4 As shown, the drive member 3022 comprises a circular shaft connected to the drive disc 302 and a second bearing sleeved on the shaft. The diameter of the second bearing matches the width of the rectangular groove 30431. The second bearing is a deep groove ball bearing, and the shaft is a cylindrical rotary structure. The shaft is plugged into and fixed to the drive disc 302, and the second bearing is matingly connected to the outside of the shaft.

[0072] The pushing block 3043 of this embodiment has an upwardly open U-shaped groove at one end facing the driving member 3022. When the pushing block 3043 is driven to move back and forth along the width direction of the cabinet 101, the driving member 3022 slides in the pushing block 3043, and the rotating disk rotates back and forth accordingly, so as to drive the three upper clamping mechanisms 303 to move closer to or away from each other, adjust the clamping position of the clamping jaws, and adjust the angle between the clamping arm 3033 and the water pump housing 4 through the first driving part 3034.

[0073] In addition, if Figures 1 to 4As shown, the cabinet 101 is also provided with a horizontal support plate 1011, which is provided with a through hole 1012. The edge of the water pump housing 4 overlaps the support plate 1011. The squeezing mechanism 2 applies pressure to the bottom of the water pump housing 4; the clamping mechanism 303 clamps the top of the water pump housing 4. Figure 1 As shown in FIG, the support plate 1011 of this embodiment is bolted to the cabinet 101. When the inner hole is clamped, the support plate 1011 can be used to support the flat plate of the water pump housing 4 to reduce the bearing force of the clamping mechanism 303 to avoid damage caused by excessive pressure. Of course, the support plate 1011 can be removed if the pressure allows.

[0074] like Figure 2 As shown, the outer side of the water pump housing 4 is clamped. At this time, in order to facilitate the installation of the water pump and the water pump housing 4 and increase the installation space, the support plate 1011 can be removed. In addition, an inspection cover 103 is provided on the back plate of the cabinet body 101 opposite to the cabinet door 102. When the water pump is assembled, the inspection cover 103 is opened for easy installation. Figure 2 As shown, in some water pump assemblies, the water pump shaft needs to be inserted into the water pump housing 4. At this time, the driving disk 302 can be rotated and the first driving part 3034 can be driven to adjust the clamping position of the clamping arm 3033 and the water pump housing 4. The water pump housing 4 can be automatically raised a certain distance without the aid of other auxiliary tools, which provides convenience for water pump installation and improves installation efficiency.

[0075] like Figure 1 and Figure 4 As shown, the extrusion mechanism 2 includes a guide shaft 202 disposed between the support plate 1011 and the top plate of the cabinet 101, a guide block 203 slidably connected to the guide shaft 202, and a third drive unit 204 connected to the guide block 203. A pressurizing unit 205 is connected to the guide block 203, and the connecting pipe 201 is disposed on the pressurizing unit 205. Specifically, the third drive unit 204 utilizes a telescopic cylinder, which can achieve good stability and high pressure. The guide block 203 extends through the guide shaft 202, and the power output end of the third drive unit 204 is fixedly connected to the guide block 203.

[0076] Furthermore, the guide shaft 202 extends along the height of the cabinet 101, and the third driving portion 204 drives the guide block 203 to slide up and down, thereby moving the pressurizing portion 205 toward or away from the water pump housing 4. The provision of the guide shaft 202 improves the positioning accuracy of the sealing gasket 2053 after downward pressure, and enhances stability during pressure application, thereby preventing the water pump housing 4 from tilting upward due to force displacement.

[0077] Further, if Figure 1 and Figure 4As shown, the pressurizing unit 205 includes a support plate 2051 arranged parallel to the support plate 1011, a connecting tube 2052 connected below the support plate 2051, and a sealing gasket 2053 connected below the connecting tube 2052. The sealing gasket 2053 is arranged concentrically with the inner hole of the water pump housing 4. The sealing gasket 2053 is adapted to the inner hole at the bottom of the water pump housing 4. One end of the connecting tube 201 passes through the top plate of the cabinet 101 to communicate with the external pressurizing device, and the other end of the connecting tube 201 passes through the support plate 2051, the connecting tube 2052, and the sealing gasket 2053.

[0078] The sealing gasket 2053 is detachably connected to the connecting tube 2052. This arrangement improves the position accuracy of the sealing gasket 2053 when it is squeezed against the inner hole of the water pump, thereby improving the detection effect.

[0079] The automobile water pump housing calibration fixture described in this embodiment fixes the water pump housing 4 in place by providing a clamping mechanism 3, seals and squeezes the inner hole of the water pump housing 4 through the extrusion mechanism 2, and transmits the pressure medium through the connecting pipe 201 into the sealing cavity 401, thereby realizing the simultaneous application of mechanical pressure and medium pressure, achieving the purpose of automatically statically testing the sealing of the water pump housing 4 and improving the detection effect.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A car water pump housing calibration fixture, characterized by: The invention comprises a box body (1), an extrusion mechanism (2) arranged at the upper end of the box body (1), and a clamping mechanism (3) arranged at the bottom of the box body (1) and extending upward, wherein the clamping mechanism (3) is used to clamp the inner hole or the outer side of the water pump housing (4), and the extrusion mechanism (2) is used to seal the inner hole of the water pump housing (4), so that a sealed cavity (401) is formed in the water pump housing (4); The extrusion mechanism (2) is provided with a connecting pipe (201) connected to an external pressure device, the connecting pipe (201) is connected to the sealing cavity (401) via the extrusion mechanism (2), and the extrusion mechanism (2) squeezes the water pump housing (4) and transports pressure medium into the sealing cavity (401); The box (1) comprises a cabinet (101) and a cabinet door (102) pivotally connected to one side of the cabinet (101); a sealing member is provided between the cabinet door (102) and the cabinet (101), so that the cabinet (101) and the cabinet door (102) form a sealed calibration space; the cabinet door (102) is made of a transparent material.

2. The automobile water pump housing calibration fixture according to claim 1, characterized in that: The clamping mechanism (3) comprises a base (301) fixedly connected to the bottom of the cabinet (101), a driving disk (302) pivotally connected to the base (301), a plurality of clamping mechanisms (303) uniformly distributed on the driving disk (302), and a power mechanism (304) for driving the driving disk (302) to rotate; The driving disc (302) is evenly distributed on its circumference with sliding grooves (3021) arranged in one-to-one correspondence with the clamping mechanisms (303). When the driving disc (302) rotates, the clamping mechanisms (303) slide along the sliding grooves (3021) and move away from or closer to each other.

3. The automobile water pump housing calibration fixture according to claim 2, characterized in that: The clamping mechanism (303) includes a first bearing (3031) slidably connected to the slide groove (3021), a slide rail (3032) provided on the first bearing (3031), a clamping arm (3033) pivotally connected to the slide rail (3032), and a first driving portion (3034) for driving the clamping arm (3033) to rotate; A positioning disk (305) is spaced apart above the driving disk (302), and the positioning disk (305) passes through the driving disk (302) and is fixedly connected to the base (301); The positioning disc (305) is formed with a positioning groove (3051) adapted to the slide rail (3032). When the driving disc (302) rotates, the slide rails (3032) move closer to or farther away from each other along the positioning groove (3051).

4. The automobile water pump housing calibration fixture according to claim 3, characterized in that: The slide groove (3021) adopts an arc-shaped long groove structure, and the width of the slide groove (3021) is adapted to the diameter of the first bearing (3031); One end of the slide groove (3021) is close to the center of the driving disk (302), and the other end is close to the outside of the driving disk (302). The center points of both ends of the slide groove (3021) are concentric with the driving disk (302).

5. The automobile water pump housing calibration fixture according to claim 4, characterized in that: The power mechanism (304) comprises a guide rail (3041) connected to the cabinet (101), a slider (3042) slidably connected to the guide rail (3041), a push block (3043) connected to the slider (3042), and a second driving part (3044) for driving the slider (3042) to slide. A downwardly protruding driving member (3022) is provided on a side of the driving disc (302) away from the clamping mechanism (303), and a rectangular groove (30431) for accommodating the sliding of the driving member (3022) is provided on the pushing block (3043), and the rectangular groove (30431) is arranged perpendicular to the guide rail (3041).

6. The automobile water pump housing calibration fixture according to claim 5, characterized in that: The driving member (3022) comprises a circular shaft connected to the driving disc (302), and a second bearing sleeved on the circular shaft, wherein the diameter of the second bearing is adapted to the width of the rectangular groove (30431).

7. The automobile water pump housing calibration fixture according to claim 5, characterized in that: The cabinet (101) is further provided with a horizontally arranged support plate (1011), the support plate (1011) is provided with a through hole (1012), and the edge of the water pump housing (4) is overlapped on the support plate (1011); The squeezing mechanism (2) applies pressure to the bottom of the water pump housing (4); and the clamping mechanism (303) clamps the top of the water pump housing (4).

8. The automobile water pump housing calibration fixture according to claim 7, characterized in that: The extrusion mechanism (2) comprises a guide shaft (202) arranged between the support plate (1011) and the top plate of the cabinet (101), a guide block (203) slidably connected to the guide shaft (202), and a third driving part (204) connected to the guide block (203); The guide block (203) is connected to a pressurizing portion (205), and the connecting pipe (201) is arranged on the pressurizing portion (205).

9. The automobile water pump housing calibration fixture according to claim 8, characterized in that: The guide shaft (202) is extended along the height direction of the cabinet (101), and the third driving part (204) drives the guide block (203) to slide up and down, so that the pressurizing part (205) approaches or moves away from the water pump housing (4).

10. The automobile water pump housing calibration fixture according to claim 9, characterized in that: The pressurizing portion (205) comprises a support plate (2051) arranged parallel to the support plate (1011), a connecting tube (2052) connected below the support plate (2051), and a sealing gasket (2053) connected below the connecting tube (2052); The sealing gasket (2053) is arranged concentrically with the inner hole of the water pump housing (4); The sealing gasket (2053) is adapted to the inner hole at the bottom of the water pump housing (4); one end of the connecting pipe (201) passes through the top plate of the cabinet (101) and is connected to the external pressurizing device; the other end of the connecting pipe (201) passes through the support plate (2051), the connecting tube (2052), and the sealing gasket (2053); The sealing gasket (2053) is detachably connected to the connecting tube (2052).

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