End cover multi-hitching-leg-hole composite testing fixture for automobile generator

Abstract

The utility model belongs to the technical field of testing fixtures for automobile production, and particularly relates to a composite testing fixture for multiple hitching leg holes of an end cover for an automobile generator. The utility model provides an end cover multi-hitching-leg-hole composite testing fixture for an automobile generator, and the testing fixture can enable the positioning transverse shaft unit to be inserted into a bearing chamber and to be erected on the slotting plate unit through the arrangement of the slotting plate unit, the positioning transverse shaft unit and the parallel and level detection frame unit on the installation bottom plate. Therefore, the flush detection frame unit can rapidly detect hitching leg holes of which the depth direction is perpendicular to the bearing chamber, and efficiently judge the qualification of the center distance of a plurality of hitching leg holes perpendicular to the bearing chamber, the diameters of the hitching leg holes and the form and location tolerance of the hitching leg holes; and 2, whether the sizes, positions and perpendicularity of the hitching leg holes are qualified or not is detected through whether the flush detection frame unit can penetrate through all the hitching leg holes or not, then the flatness of the upper and lower end faces of the hitching leg holes is judged through the flush detection frame unit and the mounting bottom plate, and the detection mode is simple and efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of inspection tools for automobile production, in particular to a composite inspection tool with multiple hanging foot holes for an end cover of an automobile generator. Background Art

[0002] The front cover is an important part of the automobile generator. The front cover includes a bearing chamber and a hanging foot hole. The bearing chamber is used to install the bearing, and the hanging foot hole is used to assemble with automobile parts. When the front cover of the generator is manufactured, the diameter of the bearing chamber and the center distance of the hanging foot hole are important characteristics. The accuracy of these dimensions will affect the assembly and use of the generator and affect the stability of the generator. As a special tool for efficient quality control, the automobile end cover inspection fixture plays an important role in checking whether the front cover is qualified.

[0003] On the other hand, the automobile generator end cover inspection fixture generally includes a base and a detection mechanism arranged on the base. The base is used to place the front end cover horizontally. The detection mechanism is used to detect the hanging foot hole of the horizontally placed front end cover, and is used to detect the front end cover whose bearing chamber is parallel to the depth direction of the hanging foot hole.

[0004] The Chinese utility model patent with the utility model patent announcement number CN217330987U and the announcement date of 2022-08-30 discloses an automobile generator end cover inspection fixture, the structure of which includes a base and multiple detection mechanisms, the detection mechanism includes a detection column and an installation mechanism, the detection column is arranged above the base, and the installation mechanism is arranged at the bottom of the detection column. The installation mechanism includes a sleeve, the inner cavity of the sleeve is slidably and interlacedly connected with the bottom of the detection column, a compression spring is arranged at the bottom of the inner cavity of the sleeve, and slide grooves are opened on both sides of the sleeve. Blocks are fixedly connected to both sides of the bottom of the detection column, and a marking line is arranged on the top of the detection column.

[0005] The general structural principle of the automobile generator end cover inspection fixture in this utility model patent is as follows: the utility model moves the end cover downward so that the inner cavity of the end cover hanging foot hole is slidably and interlaced with the top of the corresponding detection column. As the end cover moves downward, the detection column is pressed downward to compress the compression spring, and the distance between the two hanging foot holes is detected by using multiple detection columns, and the detection column is observed to exceed the marking line of the hanging foot hole to detect the diameter of the hanging foot hole.

[0006] However, the automobile generator end cover inspection fixture has at least the following two shortcomings in actual use, in other words, which are the technical problems to be solved by the present utility model.

[0007] 1. This detection column is only applicable to the situation where the opening direction of the hanging foot hole is parallel to the depth direction of the bearing chamber, and cannot detect the situation where the opening direction of the hanging foot hole is perpendicular to the depth direction of the bearing chamber.

[0008] 2. The automobile generator end cover inspection fixture can only detect the position and diameter of the hanging foot holes, and cannot effectively detect whether the upper and lower end surfaces of all hanging foot holes are level.

[0009] So to sum up, there is an urgent need for a composite inspection fixture for multiple hanging foot holes on the end cover of an automobile generator, which is suitable for the bearing chamber being perpendicular to the depth direction of the hanging foot hole and can detect whether the end face of the hanging foot hole is horizontal, so as to be used for the detection of the hanging foot holes on the end cover of the automobile generator. Utility Model Content

[0010] The utility model provides a composite inspection tool for a plurality of hanging foot holes of an end cover of an automobile generator. The utility model can, by arranging a slotted plate unit, a positioning transverse axis unit and a flush detection frame unit on a mounting bottom plate, achieve the following: 1. The positioning transverse axis unit is inserted into a bearing chamber and mounted on the slotted plate unit, so that the flush detection frame unit can quickly detect the hanging foot holes which are perpendicular to the bearing chamber in the depth direction, and efficiently determine the eligibility of the center distances, diameters and shape and position tolerances of a plurality of hanging foot holes which are perpendicular to the bearing chamber; 2. Whether the size, position and verticality of the hanging foot holes are qualified is determined by determining whether the flush detection frame unit can pass through all the hanging foot holes, and then the flatness of the upper and lower end surfaces of the hanging foot holes is determined by the flush detection frame unit and the mounting bottom plate, and the detection method is simple and efficient.

[0011] The technical solution adopted by the utility model to solve the above problems is: a composite inspection fixture with multiple hanging foot holes for an end cover of an automobile generator, the structure of which includes a mounting base plate, slotted plate units arranged in pairs on the mounting base plate, a positioning horizontal axis unit arranged on the slotted plate unit and used for plugging into a bearing chamber, and a flush detection frame unit inserted into the detection hanging foot holes.

[0012] A further preferred technical solution is that the flush detection frame unit includes an integral plate for detecting whether the end faces of the hanging foot holes are flush, a plurality of detection columns arranged on the integral plate and used for inserting into the hanging foot holes, and a matching reset groove unit arranged on the mounting base plate and used for inserting the detection columns.

[0013] A further preferred technical solution is that the slotted plate unit includes a slotted support plate arranged on the mounting base plate.

[0014] A further preferred technical solution is that the positioning transverse axis unit includes a support rod arranged on the slotted support plate, and a fixing ring sleeved on the support rod and used to be embedded in the bearing chamber.

[0015] A further preferred technical solution is that the level detection frame unit further includes a detection block which is arranged on the integral plate, connected to the detection column, and used for detecting whether the end surface of the hanging foot hole is horizontal.

[0016] A further preferred technical solution is that the flush detection frame unit also includes a screw connection column arranged on the detection block and used for screwing the integral plate, and a matching screw hole arranged on the integral plate and used for connecting the screw connection column.

[0017] A further preferred technical solution is that: the flush detection frame unit further includes a limiting column arranged on the detection column and used for inserting into the matching reset groove unit.

[0018] A further preferred technical solution is that: the flush detection frame unit also includes a clearance groove arranged on the integral plate and used for placing the end cover plate.

[0019] A further preferred technical solution is that the slotted plate unit further includes a baffle plate which is arranged on the slotted support plate and is used to resist the support rod.

[0020] A further preferred technical solution is that: the positioning transverse axis unit also includes an end block arranged on the support rod and used for engaging the slotted support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model.

[0022] Figure 2 A perspective view of the front end cover.

[0023] Figure 3 This is a positional structural diagram of the slotted plate unit in the utility model.

[0024] Figure 4 This is a position structure diagram of the positioning horizontal axis unit in the utility model.

[0025] Figure 5 This is a positional structural diagram of the level detection rack unit in the utility model.

[0026] Figure 6 It is a positional cross-sectional view of the utility model from a left-side viewing angle.

[0027] Figure 7 It is a schematic diagram of the use of the utility model and the front end cover.

[0028] In the figure, the meanings of the symbols are as follows:

[0029] Bearing chamber a, hanging foot hole b, round hanging foot hole b1, waist hanging foot hole b2, end cover plate c;

[0030] Install the base plate 11;

[0031] Slotted plate unit 1, positioning horizontal axis unit 2, flush detection frame unit 3, matching reset groove unit 4;

[0032] Slotted support plate 101 , baffle plate 102 , support rod 201 , fixing ring 202 , end block 203 , integral plate 301 , detection column 302 , detection block 303 , screw connection column 304 , matching screw hole 305 , limit column 306 , and clearance groove 307 . DETAILED DESCRIPTION

[0033] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0034] As attached Figure 1-7 As shown, a composite inspection fixture with multiple hanging foot holes for an end cover of an automobile generator comprises a mounting base plate 11, slotted plate units 1 arranged in pairs on the mounting base plate 11, positioning transverse axis units 2 arranged on the slotted plate units 1 and used for plugging into the bearing chamber a, and a flush detection frame unit 3 for inserting and detecting the hanging foot holes b.

[0035] In this embodiment, the slotted plate unit 1 is respectively arranged at both ends of the mounting base plate 11, and the reserved space in the middle is used to place the front end cover. The slotted plate unit 1 is used to support the positioning transverse axis unit 2. After the positioning transverse axis unit 2 passes through the bearing chamber a of the front end cover, the two ends of the positioning transverse axis unit 2 are placed on the slotted plate unit 1, so that the entire front end cover is perpendicular to the mounting base 11, and the foot hole b of the front end cover is parallel to the horizontal plane. Then, the aperture size, verticality, center distance, and end surface horizontality of the foot hole b are detected by the flush detection frame unit 3 to determine whether the specifications of the foot hole meet the standards. The front end cover includes the bearing chamber a and the foot hole b. The foot hole b can be a circular foot hole or a special-shaped foot hole, for example Figure 2 As shown, the foot-hanging holes include three circular foot-hanging holes b1 and one waist-shaped foot-hanging hole b2, and the detection column 302 on the flush detection frame unit 3 can be flexibly arranged according to the specifications of the foot-hanging holes to be detected.

[0036] In addition, the positioning transverse axis unit 2 is used to be inserted into the bearing chamber a, and the positioning transverse axis unit 2 matches the aperture of the bearing chamber a, and the center of the positioning transverse axis unit 2 coincides with the center of the bearing chamber a, to prevent the gap between the bearing chamber a and the positioning transverse axis unit 2 from causing the front end cover to tilt during detection, affecting the judgment of the passivity of the hanging foot hole b by the flush detection frame unit 3.

[0037] In addition, the composite inspection fixture for multiple hanging foot holes of the end cover of the automobile generator can be directly inserted into the mounting base 11 when not in use, or it can be placed separately. The qualified inspection of the position, size and verticality of the aperture of the hanging foot hole b is based on whether the detection column 302 can smoothly pass through the hanging foot hole b. When the flush detection frame unit 3 detects the aperture of the hanging foot hole b, the detection column 302 is first inserted into the hanging foot hole b, and then inserted into the matching reset groove unit 4 on the mounting base 11 by moving left and right, so as to determine the qualification and verticality of the center distance of multiple hanging foot holes b. Among them, the matching reset groove unit 4 can be a plurality of reset holes that penetrate the mounting base 11 and are used to insert the detection column 302. Its shape, size and position are matched with the detection column 302. The purpose is to be used to insert all the detection columns 302, so as to detect the verticality of the hanging foot hole b.

[0038] Finally, the detection of whether the end face of the hanging foot hole b is horizontal is carried out by observing the gap between the integral plate 301 or the detection block 303 and the upper end face of the hanging foot hole b, and the gap between the mounting base 11 and the lower end face of the hanging foot hole, and at the same time judging whether the upper and lower end faces of the hanging foot hole b are qualified. If the end face of the hanging foot hole b is not parallel or the end face tolerance exceeds a reasonable range, there will be a gap between the integral plate 301 and the mounting base 11, and it can be judged as unqualified.

[0039] The flush detection frame unit 3 includes an integral plate 301 for detecting whether the end faces of the hanging foot holes b are flush, a plurality of detection columns 302 arranged on the integral plate 301 and used to be inserted into the hanging foot holes b, and a matching reset groove unit 4 arranged on the mounting base plate 11 and used to insert the detection columns 302.

[0040] In this embodiment, the integral plate 301 is used to connect the detection column 302, and the contact surface with the foot hole b is a horizontal surface, which is convenient for detecting the flatness of the end surface of the foot hole b. The detection column 302 is used to pass through the foot hole b, so as to detect whether the position, size and verticality of the foot hole b are qualified, so that the detection of the foot hole b is more efficient and convenient, and can easily deal with the situation where the depth direction of the foot hole is perpendicular to the bearing chamber. The detection column 302 can be a special-shaped column, such as Figure 2 As shown, when the hanging foot hole b is three circular hanging foot holes b1 and one waist-shaped hanging foot hole b2, the detection column 302 is set to three circular detection columns and one waist-shaped detection column according to the size and position of the hanging foot hole b. The number, shape, size and position of the detection column 302 are set according to the hanging foot hole b actually detected, which can meet the detection requirements of special-shaped hanging foot holes, has greater flexibility and simpler operation.

[0041] The slotted plate unit 1 includes a slotted support plate 101 disposed on the mounting base plate 11 .

[0042] In this embodiment, the slotted support plate 101 supports the support rod 201 and slightly raises the position of the front end cover on the positioning transverse axis unit 2 to prevent the front end cover from contacting the ground and affecting the detection effect. At the same time, it is very convenient to use. After the front end cover is fixed on the positioning transverse axis unit 2, it can be directly placed on the slotted support plate 101. There is no need to fix the positioning transverse axis unit 2 or the front end cover, etc. The operation is convenient and the detection efficiency is improved.

[0043] The positioning transverse axis unit 2 includes a support rod 201 disposed on the slotted support plate 101, and a fixing ring 202 sleeved on the support rod 201 and used to be embedded in the bearing chamber a.

[0044] In this embodiment, the bearing chamber a passes through the support rod 201 and is clamped by the fixing ring 202. The size of the fixing ring 202 is consistent with the size of the bearing chamber a, and there will be no displacement or falling off. The fixing ring 202 can be replaced according to the size of the bearing chamber a. Both ends of the support rod 201 are placed on the slotted support plate 101. The front end cover is perpendicular to the horizontal plane at this time, and the hanging foot hole b which is perpendicular to the bearing chamber a in the depth direction is also perpendicular to the horizontal plane. The end face of the hanging foot hole b is horizontal, so that the detection column 302 is convenient to be inserted into the hanging foot hole b from top to bottom, and the flatness of the end face of the hanging foot hole b is detected through the integral plate 301. The operation is simple and the structure is stable.

[0045] The level detection frame unit 3 further includes a detection block 303 which is arranged on the integral plate 301 and connected to the detection column 302 and is used to detect whether the end surface of the hanging foot hole b is horizontal.

[0046] In this embodiment, the function of the detection block 303 is to detect the flatness of the end face of the foot-hanging hole b, so that it can be more intuitive to observe whether the end face of the foot-hanging hole b is horizontal. At the same time, the size of the detection block 303 can be adjusted to facilitate the detection of whether the thickness of the end face of the foot-hanging hole b is qualified. In addition, the detection block 303 can cope with the situation where there is a height difference between the end faces of the foot-hanging hole b, that is, the end faces of the foot-hanging holes b are not at the same level. The detection block 303 makes the detection more intuitive, convenient and flexible.

[0047] The flush detection frame unit 3 further includes a screw connection column 304 disposed on the detection block 303 and used for screwing the integral plate 301 , and a matching screw hole 305 disposed on the integral plate 301 and used for connecting the screw connection column 304 .

[0048] In this embodiment, the screw column 304 is provided on the detection block 303, which is screwed with the matching screw hole 305 on the integral plate 301. The detection block 303 and the detection column 302 can be disassembled from the integral plate 301, so that the applicability of the flush detection frame unit 3 is stronger. The matching screw hole 305 can be set in advance according to the position of the hanging foot hole b, and the matching reset groove unit 4 should also be set accordingly, so that the hanging foot holes b of front end covers of different specifications can be detected. For the hanging foot holes b with the same center position but different aperture sizes or aperture shapes, it is only necessary to replace the matching detection column 302, which is simple to disassemble and has strong applicability.

[0049] The flush detection frame unit 3 further includes a limiting column 306 which is arranged on the detection column 302 and is used for inserting into the matching reset groove unit 4 .

[0050] In this embodiment, the limiting column 306 is inserted into the matching reset groove unit 4. When the center position of the hanging foot hole b to be detected is the same but the aperture size or aperture shape is different, the detection column 302 needs to be replaced. In order to make the replaced detection column 302 also insertable into the matching reset groove unit 4, the limiting column 306 that cooperates with the matching reset groove unit 4 is set on the detection column 302, so that there is no need to re-drill the matching reset groove unit 4 or replace the mounting base 11, so that it can be suitable for the detection of the hanging foot hole b of the front end cover of different specifications.

[0051] The flush detection frame unit 3 further includes a clearance groove 307 disposed on the integral plate 301 and used for placing the end cover plate c.

[0052] In this embodiment, the role of the give way groove 307 is to reduce the weight of the material and the composite inspection fixture of the end cover with multiple hanging feet holes for the automobile generator. There is a height difference between the end cover plate c and the end face of the hanging foot hole b. If the give way groove 307 is not set, a protrusion needs to be set in the middle of the integral plate 301, which not only limits the applicability of front end covers of other specifications, but also consumes more materials. The give way groove 307 is used to place the end cover plate c, which not only makes the structure more compact, but also the front end cover will not have unnecessary interference with the flush detection frame unit 3, and is suitable for the situation where the end cover plate c and the end face of the hanging foot hole b have different height differences.

[0053] The slotted plate unit 1 further includes a baffle 102 disposed on the slotted support plate 101 and used to resist the support rod 201 .

[0054] In this embodiment, the baffle 102 is used to limit the upper and lower positions of the support rod 201, and is used to fix the two ends of the support rod 201 to prevent the support rod 201 from falling off or shifting from the slotted support plate 101 when the inspector operates the flush detection frame unit 3 during the detection process, and enables the inspector to more smoothly insert the detection column 302 into the hanging foot hole b.

[0055] The positioning transverse axis unit 2 further includes an end block 203 disposed on the support rod 201 and used for engaging with the slotted support plate 101 .

[0056] In this embodiment, the function of the end block 203 is to enable the support rod 201 to be engaged on the slotted support plate 101. The setting of the end block 203 enables the support rod 201 to be quickly positioned on the slotted support plate 101 when placed, and the support rod 201 will not fall off or the front end cover will not shift during the detection process. The structure is more stable and reliable, and it is easier for the inspector to detect the hanging foot hole b.

[0057] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A composite inspection fixture with multiple hanging foot holes for an end cover of an automobile generator, the structure comprising a mounting base plate (11), characterized in that: It also includes slotted plate units (1) arranged in pairs on the mounting base plate (11), a positioning transverse axis unit (2) arranged on the slotted plate unit (1) and used for plugging into the bearing chamber (a), and a flush detection frame unit (3) inserted into the detection hanging foot hole (b).

2. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 1 is characterized by: The flush detection frame unit (3) comprises an integral plate (301) for detecting whether the end faces of the foot-hanging holes (b) are flush, a plurality of detection columns (302) arranged on the integral plate (301) and used for inserting into the foot-hanging holes (b), and a matching reset groove unit (4) arranged on the mounting base plate (11) and used for inserting into the detection columns (302).

3. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 1, characterized in that: The slotted plate unit (1) comprises a slotted support plate (101) arranged on the mounting base plate (11).

4. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 3 is characterized by: The positioning transverse axis unit (2) comprises a support rod (201) arranged on the slotted support plate (101), and a fixing ring (202) sleeved on the support rod (201) and used to be embedded in the bearing chamber (a).

5. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 2, characterized in that: The level detection frame unit (3) further comprises a detection block (303) which is arranged on the integral plate (301), connected to the detection column (302), and used for detecting whether the end surface of the hanging foot hole (b) is horizontal.

6. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 5, characterized in that: The flush detection frame unit (3) further comprises a screw connection column (304) arranged on the detection block (303) and used for screw connection to the integral plate (301), and a matching screw hole (305) arranged on the integral plate (301) and used for connecting the screw connection column (304).

7. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 6, characterized in that: The flush detection frame unit (3) further comprises a limiting column (306) arranged on the detection column (302) and used for inserting into the matching reset groove unit (4).

8. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 2, characterized in that: The flush detection frame unit (3) further comprises a clearance groove (307) arranged on the integral plate (301) and used for accommodating the end cover plate (c).

9. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 4, characterized in that: The slotted plate unit (1) further comprises a baffle (102) arranged on the slotted support plate (101) and used to resist the support rod (201).

10. The composite inspection fixture with multiple hanging holes for end cover of automobile generator according to claim 4, characterized in that: The positioning transverse axis unit (2) further comprises an end block (203) arranged on the support rod (201) and used for engaging the slotted support plate (101).

Images