CN114413712A

CN114413712A - Axle housing detection tool

Info

Publication number: CN114413712A
Application number: CN202210053392.2A
Authority: CN
Inventors: 谭二锟; 徐通; 王思宇; 刘继东; 徐洪阳
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-04-29

Abstract

The application relates to an axle housing detection tool, which comprises a frame, a positioning assembly, a detection assembly and a detection tool, wherein the frame is provided with a first side, the positioning assembly and the detection assembly are arranged on the first side of the frame, the positioning assembly is provided with a positioning surface used for being attached to an axle housing, the detection assembly is provided with a first detection surface parallel to the positioning surface, and the detection tool is arranged on the first side of the frame. Above-mentioned utensil is examined to axle housing sets up locating component, through laminating locating surface and axle housing, makes the relative axle housing of axle housing examine the utensil location to in detecting the axle housing. Through setting up the determine module, make when locating surface and axle housing laminating, the distance between first detection face and the axle housing is confirmed to can stretch into between first detection face and the axle housing with the detection instrument, and detect the size of axle housing. Because above-mentioned testing process, it is fixed with the axle housing to fix the locating surface, detect through the detection instrument can, need not to use the size that three-coordinate measuring machine just can detect the axle housing, make the testing process convenient quick.

Description

Axle housing detection tool

Technical Field

The application relates to the technical field of automotive checking tools, in particular to an axle housing checking tool.

Background

The axle is an important part of a vehicle, and the size and the assembly precision of the axle with other parts have important influence on the performance of the vehicle, so that the axle housing needs to be detected in the manufacturing process of the vehicle. In the related art, a three-coordinate measuring machine is generally used to inspect axle housings.

However, the axle housing measuring device in the related art has the problem of low detection efficiency.

Disclosure of Invention

Based on this, it is necessary to provide the axle housing that can short-term test axle housing to the problem that axle housing detection efficiency is low among the correlation technique and examine utensil.

According to an aspect of the application, a utensil is examined to axle housing for detect the axle housing, utensil includes is examined to the axle housing:

a frame having a first side;

the positioning assembly and the detection assembly are arranged on the first side of the frame, the positioning assembly is provided with a positioning surface for being attached to the axle housing, and the detection assembly is provided with a first detection surface parallel to the positioning surface; and

a detection tool disposed on the first side of the frame.

Above-mentioned utensil is examined to axle housing sets up the frame, makes to connect respectively in the locating component and the determine module relatively fixed of frame, sets up locating component, through laminating locating surface and axle housing, makes the relative axle housing of axle housing examine the location to in detecting the axle housing. Through setting up the determine module, make when locating surface and axle housing laminating, the distance between first detection face and the axle housing is confirmed to can stretch into between first detection face and the axle housing with the detection instrument, and whether the size that detects the axle housing is qualified. Because above-mentioned testing process, it is fixed with the axle housing to fix the locating surface, detect through the detection instrument can, need not to use the size that three-coordinate measuring machine just can detect the axle housing, make the testing process convenient quick.

In one embodiment, the axle housing has two lower reaction rod mounting brackets spaced apart in a first direction, and the first side of the frame has two first rod bodies disposed opposite each other in the first direction;

detection element is including locating two respectively two reaction pole installing support detects the piece under on the first body of rod, first detection face includes it deviates from on the reaction pole installing support detects the piece down a side surface of frame.

In one embodiment, the frame further comprises a second rod connected between the two first rods;

the detection assembly further comprises an upper reaction rod mounting support detection piece arranged on the second rod body, and the first detection surface comprises a side surface deviating from the frame on the upper reaction rod mounting support detection piece.

In one embodiment, two steel plate spring supports are arranged on the axle housing at intervals along a first direction;

the detection assembly further comprises two steel plate spring support detection pieces which are arranged on the first rod body respectively, and the two steel plate spring support detection pieces are provided with second detection surfaces respectively along one ends of the first direction and the first direction.

In one embodiment, an accommodating space for at least partially accommodating the axle housing is formed between the two first rod bodies.

In one embodiment, a plurality of holes to be detected are formed in the axle housing, the first detection surface is recessed into the detection assembly to form a plurality of detection holes corresponding to the holes to be detected, and the radial size of each detection hole is larger than that of the corresponding hole to be detected.

In one embodiment, the positioning assembly includes at least three positioning members respectively disposed on the first side of the frame;

the positioning surface comprises a side surface of the positioning piece, which is far away from the frame.

In one embodiment, the positioning part is provided with a positioning hole corresponding to the hole to be detected;

the axle housing inspection device further comprises two fixing pieces in one-to-one correspondence with the positioning holes, and the fixing pieces are used for sequentially penetrating through the corresponding positioning holes and the detection holes to be detected so that the positioning pieces are fixedly connected with the axle housing.

In one embodiment, the axle housing detection tool further comprises a datum component arranged on the other side of the frame, and the datum component is provided with a datum surface and a datum hole formed by the datum surface and recessed in the datum component.

In one embodiment, the reference assembly comprises at least three reference members respectively arranged on the frame;

and the datum parts are respectively provided with sub datum surfaces, the sub datum surfaces are recessed towards the datum parts to form the datum holes, and the sub datum surfaces are positioned on the same plane and form the datum surfaces.

Drawings

FIG. 1 is a schematic assembly diagram of an axle housing inspection tool and an axle housing according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an axle housing fixture in the embodiment shown in FIG. 1;

FIG. 3 is a schematic structural view of the inspection tool and axle housing fixture of the embodiment of FIG. 2 during use;

FIG. 4 is an assembly schematic view of the axle housing fixture and axle housing of the embodiment of FIG. 1 from another perspective;

FIG. 5 is a schematic structural view of an inspection tool, inspection assembly and axle housing during use in accordance with an embodiment of the present application;

FIG. 6 is a schematic view of an assembly of a fiducial component and a frame in an embodiment of the present application.

In the figure: 10. an axle housing; 12. a lower reaction rod mounting bracket; 14. a steel plate spring support; 20. a frame; 22. a first rod body; 24. a second rod body; 30. a positioning assembly; 32. positioning the surface; 34. a positioning member; 40. a detection component; 41. a first detection surface; 42. the lower reaction rod mounting bracket detection member; 44. the upper reaction rod is provided with a bracket detection piece; 46. a leaf spring support detection member; 48. a second detection surface; 49. a detection hole; 50. a detection means; 60. a connecting member; 80. a fixing member; 90. a reference assembly; 92. a reference plane; 94. a reference hole; 96. a reference member; 960. a connecting portion; 962. a reference portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

FIG. 1 is a schematic assembly diagram of an axle housing inspection tool and an axle housing according to an embodiment of the present application; FIG. 2 is a schematic structural diagram of an axle housing fixture in the embodiment shown in FIG. 1; FIG. 3 is a schematic structural diagram of the inspection tool and the axle housing inspection tool in the use process in the embodiment shown in FIG. 2.

Referring to fig. 1-3, an axle housing testing fixture provided in an embodiment of the present application is used for testing an axle housing 10, and includes a frame 20, a positioning assembly 30, a testing assembly 40, and a testing tool 50 (see fig. 3). As shown in fig. 2, the frame 20 has a first side, the positioning assembly 30 and the detecting assembly 40 are disposed on the first side of the frame 20, the positioning assembly 30 has a positioning surface 32 for fitting with the axle housing 10, the detecting assembly 40 has a first detecting surface 41 parallel to the positioning surface 32, and as shown in fig. 1 and 3, the detecting tool 50 is disposed on the first side of the frame 20.

In the axle housing testing fixture, the frame 20 is used for being placed on the axle housing 10, and the positioning assemblies 30 and the detecting assemblies 40 which are respectively connected to the frame 20 are kept relatively fixed by arranging the frame 20. Set up locating component 30, make locating component 30 pass through locating surface 32 and the laminating of axle housing 10 to make the relative axle housing of axle housing 10 examine a location, so that the testing result is accurate. By providing the detecting assembly 40 with the first detecting surface 41, the first detecting surface 41 is parallel to the positioning surface 32, so that when the positioning surface 32 is fitted to the axle housing 10, a certain distance is provided between the first detecting surface 41 and the axle housing 10, so that the detecting tool 50 can extend between the first detecting surface 41 and the axle housing 10 to detect whether the actual gap value between the first detecting surface 41 and the axle housing 10 is equal to the ideal gap value between the first detecting surface 41 and the axle housing 10. So, realized the measurement to the surface size of axle housing 10, and only need in the measurement process with locating surface 32 and axle housing 10 laminating back, will detect instrument 50 stretch into first detection face 41 and axle housing 10 between can, make the measurement process convenient quick, improve the detection efficiency of axle housing 10.

It should be appreciated that when the locating surface 32 is engaged with the axle housing 10, the first sensing surface 41 is configured to have a gap with a surface of the axle housing 10 for the sensing tool 50 to extend into the gap and measure the size of the gap to detect whether the size of the axle housing 10 is satisfactory.

Specifically, first detection face 41 is used for corresponding with the profile of waiting to detect of axle housing 10, and the profile of waiting to detect of axle housing 10 and the surface that axle housing 10 is used for laminating with locating surface 32 are located the coplanar, and when locating surface 32 and axle housing 10 laminating, first detection face 41 is parallel with the profile of waiting to detect of axle housing 10, and first detection face 41 and wait to detect ideal clearance value between the profile and can set up according to the measurement needs.

In one embodiment, the ideal clearance value between the first sensing surface 41 and the profile to be measured of the axle housing 10 is 3 mm.

Alternatively, as shown in fig. 3, the detection tool 50 may employ a wedge-shaped feeler. The wedge-shaped clearance gauge is provided with scales along the lengthwise extension direction, and the thickness of the wedge-shaped clearance gauge along one end of the lengthwise extension direction is gradually reduced towards the other end. In actual use, the wedge feeler is inserted between the first detection surface 41 and the axle housing 10 (see fig. 1) to measure the actual gap value between the first detection surface 41 and the axle housing 10 by reading the scale on the wedge feeler.

In other embodiments, the measuring tool 50 can be other gauges as long as the distance between the axle housing 10 and the first detecting surface 41 can be measured. For example, the detection tool 50 may also employ a feeler gauge or a go/no-go gauge. The feeler is a gauge composed of a group of thin steel sheets with different thicknesses, and in the actual use process, the feeler is inserted between the axle housing 10 and the first detection surface 41, and is pulled back and forth, when a slight resistance is sensed, the clearance value is close to the value marked on the feeler, and when the resistance is sensed to be too large or too small, the clearance value is larger or smaller than the value marked on the feeler. Lead to the no-go gage including the different logical rule and the no-go gage of size, in the in-service use process, if lead to the rule can stretch into between axle housing 10 and the first detection face 41, the no-go gage can not stretch into, then axle housing 10 is qualified. It will be appreciated that the size of the pass-stop gauge is configured to correspond to a desired clearance value between the axle housing 10 and the first sensing surface 41.

In some embodiments, as shown in FIG. 1, the frame 20 includes a plurality of rods connected to one another.

Optionally, the material of frame 20 can adopt the carbon fiber to reduce the weight of utensil is examined to the axle housing, make utensil is examined to the axle housing be convenient for operate and use. Through adopting the material to be the body of rod of carbon fiber, in the in-service use process, the production line that can be used for axle housing 10 by one-man operation and examined the utensil to the axle housing makes axle housing 10's detection efficiency further improve.

In one embodiment, the radial dimension of the shaft body is 30 mm.

FIG. 4 is an assembly view of the axle housing fixture and the axle housing from another perspective in the embodiment of FIG. 1.

In some embodiments, as shown in fig. 2 and 4, the axle housing 10 has two lower reaction rod mounting brackets 12 spaced apart along a first direction, the first side of the frame 20 has two first rods 22 oppositely disposed along the first direction, the detecting assembly 40 includes two lower reaction rod mounting bracket detecting members 42 respectively disposed on the two first rods 22, and the first detecting surface 41 includes a side surface of the lower reaction rod mounting bracket detecting member 42 facing away from the frame 20. It should be noted that the side of the lower reaction bar mounting bracket 12 adjacent the frame 20 has a profile to be inspected. Thus, by arranging the lower reaction rod mounting bracket detection piece 42, the first detection surface 41 arranged on the lower reaction rod mounting bracket detection piece 42 can correspond to the profile to be detected of the lower reaction rod mounting bracket 12, so that the actual gap value between the first detection surface 41 and the profile to be detected can be measured by the detection tool 50, and compared with the ideal gap value, whether the size of the lower reaction rod mounting bracket 12 is qualified or not is judged, and the size detection of the profile to be detected on the lower reaction rod mounting bracket 12 is realized.

Specifically, the first direction is a lengthwise extending direction of the axle housing 10.

In some embodiments, as shown in fig. 2-4, the two first rods 22 have a receiving space therebetween for at least partially receiving the axle housing 10. It should be noted that the axle housing 10 is provided with a rear cover located between the two thrust rods, and the rear cover is used for accommodating and protecting components of a vehicle transmission system such as a speed reduction structure and a differential structure. In this manner, the lower reaction rod mounting bracket detection member 42 on the first rod body 22 is brought into proximity with the lower reaction rod mounting bracket 12 by providing an accommodation space between the two first rod bodies 22 to accommodate the rear cover of the axle housing 10 for measurement by the detection tool 50 (see FIG. 3).

In some embodiments, as shown in fig. 2, the frame 20 further includes a second rod 24 connected between the two first rods 22, the detecting assembly 40 further includes an upper reaction rod mounting bracket detecting element 44 disposed on the second rod 24, and the first detecting surface 41 includes a side surface of the upper reaction rod mounting bracket detecting element 44 facing away from the frame 20. It should be noted that as shown in fig. 1 and 4, the axle housing 10 is also provided with an upper reaction bar mounting bracket having a profile to be inspected on a side thereof adjacent the frame 20. By providing the reaction rod mounting bracket detection piece 44, the first detection surface 41 provided on the reaction rod mounting bracket detection piece 44 can be made to correspond to the to-be-detected profile provided on the reaction rod mounting bracket, so that the size of the to-be-detected profile of the reaction rod mounting bracket can be detected by inserting the detection tool 50 (see fig. 3) between the reaction rod mounting bracket detection piece 44 and the reaction rod mounting bracket.

Alternatively, the second rod 24 is connected to one end of each of the two first rods 22, so that the second rod 24 does not interfere with the accommodating space between the two first rods 22.

Specifically, as shown in FIG. 2, the lower reaction rod mounting bracket detection member 42 is disposed at one end of the first rod 22, and the second rod 24 is connected to the other end of the first rod 22.

In some embodiments, as shown in fig. 1-3, two leaf spring supports 14 are spaced apart from each other along the first direction on the axle housing 10, the detecting assembly 40 further includes two leaf spring support detecting members 46 respectively disposed on the two first rods 22, and one end of each of the two leaf spring support detecting members 46 facing away from each other along the first direction has a second detecting surface 48. It should be noted that the sides of the two leaf spring supports 14 facing each other in the first direction each have a profile to be detected. Therefore, by providing the leaf spring support detector 46, the second detection surface 48 can correspond to the profile to be detected of the leaf spring support 14, so that the actual distance between the second detection surface 48 and the profile to be detected can be measured by the detection tool 50, and whether the size of the leaf spring support 14 meets the requirement or not can be detected by comparing the actual distance with the preset distance.

It should be noted that the second detection surface 48 is configured to be disposed parallel to and spaced from the profile to be detected of the leaf spring support 14 when the locating surface 32 is engaged with the axle housing 10.

In one embodiment, as shown in FIGS. 1-2 and 4, leaf spring support detection element 46 is disposed on an end of first rod 22 distal from lower reaction bar mounting bracket detection element 42 such that the positions of lower reaction bar mounting bracket detection element 42 and leaf spring support detection element 46 correspond to the positions of lower reaction bar mounting bracket 12 and leaf spring support 14, respectively.

Above-mentioned utensil is examined to axle housing, through setting up detection assembly 40 including lower reaction pole installing support detection piece 42, go up reaction pole installing support detection piece 44 and leaf spring support detection piece 46, make the axle housing examine the utensil and can detect the size precision of waiting to detect the profile on reaction pole installing support 12 down, go up reaction pole installing support and the leaf spring support 14, because the profile that the aforesaid is waited to detect all has important influence to the installation accuracy of vehicle, consequently, above-mentioned utensil is examined to axle housing can axle housing 10 have higher precision, make the testing process convenient quick.

Alternatively, the detection assembly 40 may be made of an aluminum alloy, and the surface of the detection assembly 40 is anodized to form a hard protective layer on the surface of the aluminum alloy workpiece, so as to improve the wear resistance and the service life of the detection assembly 40.

In some embodiments, as shown in FIG. 2, the axle housing fixture further includes a plurality of connectors 60, and opposite ends of the connectors 60 are connected to the frame 20 and the corresponding sensing assembly 40 and positioning assembly 30, respectively. Thus, by arranging the connecting piece 60, the detecting component 40 and the positioning component 30 protrude out of the frame 20, so that the positioning surface 32 can be attached to the axle housing 10, and the first detecting surface 41 and the second detecting surface 48 are close to the corresponding to-be-detected profiles.

FIG. 5 is a schematic structural view of a testing tool, a testing assembly and an axle housing during use in accordance with an embodiment of the present application.

In order to enable the axle housing detection tool to be further used for detecting the hole position degree on the axle housing 10, in some embodiments, as shown in fig. 2 and 5, a plurality of holes to be detected are formed in the axle housing 10, the first detection surface 41 is recessed into the detection assembly 40 to form a plurality of detection holes 49 corresponding to the holes to be detected, and the radial size of the detection holes 49 is larger than that of the corresponding holes to be detected. In this manner, the detection hole 49 corresponding to the hole to be detected is provided to detect the position degree of the hole to be detected by the detection tool 50 provided on the first side of the frame 20.

Alternatively, as shown in fig. 5, the inspection tool 50 may employ a scribe pin having a scribe end for scribing a surface of the workpiece. In the actual detection process, the marking pin is arranged in the detection hole 49 in a penetrating mode, the marking end of the marking pin abuts against the axle housing 10, and the marking pin is rotated to enable the marking end to mark a line corresponding to the shape of the detection hole 49 on the surface of the axle housing 10. Because the radial dimension of the detection hole 49 is larger than that of the hole to be detected, the hole to be detected is positioned in the line marked by the marking pin, so that the difference between the actual position and the ideal position of the hole to be measured can be determined by measuring the distance between the edge of the hole to be detected and the line, and the detection of the position degree of the hole to be detected is realized.

It should be appreciated that the scribe pin is configured to fit into the inspection hole 49, for example, the radial dimension of the scribe pin is configured to fit into the radial dimension of the inspection hole 49, such that the scribe pin facilitates scribing a line on the surface of the axle housing 10 consistent with the dimension of the inspection hole 49, thereby enabling accurate positional measurement of the hole to be measured.

In one embodiment, the scribing pin is made of 4Cr13, and is subjected to quenching treatment, the heat treatment hardness HRC of the scribing pin is 50-55, the nominal size of the outer diameter of the scribing pin is the nominal size of the detection hole 49, the tolerance is +0/-0.01mm, and the surface roughness Ra of the scribing pin is less than or equal to 0.8 mu m.

In some embodiments, the form to be inspected of the axle housing 10 is recessed into the axle housing 10 to form the hole to be inspected. It should be noted that the hole to be detected is used to mount the axle housing 10 to other components of the vehicle, and therefore, the position of the hole to be detected and the size of the axle housing 10 provided with the hole to be detected both have an important influence on the assembly accuracy of the vehicle. Treat the type through the setting and cave in towards axle housing 10 and form and treat the inspection hole, make and can realize respectively treating the position degree of inspection hole and being equipped with the detection of treating the size of the axle housing 10 of inspection hole department through first detection face 41 to the assembly precision of axle housing 10 and other parts of vehicle has been guaranteed.

Alternatively, a plurality of holes to be detected are respectively provided in the lower reaction rod mounting bracket 12 and the upper reaction rod mounting bracket, a plurality of detection holes 49 are respectively provided in the lower reaction rod mounting bracket detection piece 42 and the upper reaction rod mounting bracket detection piece 44, the detection hole 49 provided in the lower reaction rod mounting bracket detection piece 42 corresponds to the hole to be detected provided in the lower reaction rod mounting bracket 12, and the detection hole 49 provided in the upper reaction rod mounting bracket detection piece 44 corresponds to the hole to be detected provided in the upper reaction rod mounting bracket.

In order to accurately position the gauge assembly relative to the axle housing 10, in some embodiments, as shown in fig. 1 and 2, the positioning assembly 30 includes at least three positioning members 34 respectively disposed on a first side of the frame 20, and the positioning surface 32 includes a side surface of the positioning members 34 facing away from the frame 10. So, through setting up three setting element 34, a side surface that deviates from frame 10 on every setting element 34 is equivalent to a setpoint, confirms locating surface 32 through three surface to make the axle housing examine a relative axle housing 10 accurate positioning, make the position relation between examining an subassembly and the axle housing 10 confirmed by accurate ground, improve the detection precision that the axle housing examined a utensil.

Alternatively, the positioning member 34 may be made of an aluminum alloy, and the surface of the positioning member 34 is anodized.

In order to fix the positioning member 34 relative to the axle housing 10, in some embodiments, the positioning member 34 is provided with a positioning hole corresponding to the hole to be detected, as shown in fig. 2 and 4, the axle housing testing fixture further includes two fixing members 80 corresponding to the positioning hole one to one, and the fixing members 80 are used for sequentially penetrating through the corresponding positioning hole and the hole to be detected, so that the positioning member 34 is fixedly connected to the axle housing 10. So, through setting up locating hole and mounting 80, make setting element 34 and axle housing 10 pass through mounting 80 and realize fixed connection, and because the locating hole corresponds with waiting to detect the hole, need not to change the original structure of axle housing 10 and just can realize being connected of axle housing 10 and mounting 80 to save the process, and make the structure that does not influence axle housing 10 to the detection of axle housing 10.

Specifically, a side surface of the positioning member 34 facing away from the frame 10 is disposed corresponding to the hole to be detected, wherein any two of the surfaces are recessed into the positioning member 34 to form a positioning hole corresponding to the hole to be detected.

Alternatively, the fixing member 80 may employ a positioning pin to fix the positioning member 34 relative to the axle housing 10 and to detachably connect the fixing member 80, the positioning member 34 and the axle housing 10.

In one embodiment, one of the mounts 80 may be a cylindrical pin having a radial dimension that is matched to the radial dimension of the corresponding locating and sensing holes 49 to limit the freedom of the axle housing in two directions. Another mounting 80 may employ a diamond pin to limit the degree of freedom of the axle housing in another direction, thereby enabling the axle housing to be fixedly connected to the axle housing 10 and avoiding the occurrence of an over-positioning condition.

Optionally, the fixing member 80 may be made of 4Cr13, and is quenched and heat treated to have a hardness of HRC 50-55 and a surface roughness Ra of less than or equal to 0.8 μm. The nominal size of the outer diameter of the cylindrical pin is the nominal size of the detection hole 49 with a tolerance of +0/-0.01 mm.

To provide greater accuracy in axle housing fixture dimensions, in some embodiments, as shown in FIGS. 1 and 6, the axle housing fixture further includes a datum assembly 90 disposed on the other side of the frame 20, the datum assembly 90 having a datum surface 92 and a datum hole 94 formed by the datum surface 92 recessed into the datum assembly 90. So, through setting up benchmark subassembly 90 to establish the benchmark when examining the utensil to the axle housing and carrying out three-dimensional measurement, make the self size accuracy of utensil is examined to the axle housing, with the accuracy of improvement to the testing result of axle housing 10.

Optionally, a coordinate tag for three-coordinate measurement is provided on the rod body near the reference assembly 90.

In some embodiments, as shown in fig. 1 and 6, the datum assembly 90 includes at least three datum members 96 respectively disposed on the other side of the frame 20, the datum members 96 each having a sub-datum surface recessed into the datum member 96 to form a datum hole 94, the sub-datum surfaces lying in a common plane and forming the datum surface 92. In this way, at least three sub-reference surfaces and corresponding reference holes 94 are provided to meet the reference requirement in three-coordinate measurement.

In one embodiment, as shown in FIG. 1, the number of datums 96 is 4 to more accurately establish the datums.

In some embodiments, as shown in FIG. 6, reference piece 96 includes a connecting portion 960 coupled to frame 20 and a reference portion 962, reference portion 962 being disposed at an end of connecting portion 960 facing away from frame 20, reference portion 962 being provided with a sub-reference surface and a reference hole 94.

Alternatively, the connecting portion 960 may be made of carbon fiber, and the reference portion 962 includes a resin block and a steel sleeve embedded in the resin block, and the steel sleeve is provided with the reference hole 94.

Therefore, the application provides a pair of utensil is examined to axle housing through setting up locating component 30, detection module 40, detection instrument 50, mounting 80 and benchmark subassembly 90, makes the axle housing examine the utensil location accurate, measure convenient, weight is lighter to make the detection efficiency of axle housing 10 improve.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an utensil is examined to axle housing for detect the axle housing, its characterized in that, utensil includes is examined to the axle housing:

a frame having a first side;

a detection tool disposed on the first side of the frame.

2. The axle housing inspection fixture of claim 1 wherein two lower reaction bar mounting brackets are spaced apart on the axle housing in a first direction, the first side of the frame having two first bar bodies oppositely disposed in the first direction;

3. The axle housing fixture of claim 2, wherein the frame further comprises a second rod connected between the two first rods;

4. The axle housing inspection tool of claim 2 wherein the axle housing is provided with two leaf spring supports spaced apart in a first direction;

5. The axle housing fixture of claim 2 wherein an accommodation space is provided between the two first rods for at least partially accommodating the axle housing.

6. The axle housing detection tool according to claim 1, wherein a plurality of holes to be detected are formed in the axle housing, the first detection surface is recessed into the detection assembly to form a plurality of detection holes corresponding to the holes to be detected, and the radial size of each detection hole is larger than that of the corresponding hole to be detected.

7. The axle housing inspection tool of claim 6 wherein the locating assembly includes at least three locating members respectively disposed on the first side of the frame;

8. The axle housing inspection tool according to claim 7, wherein the positioning member is provided with a positioning hole corresponding to the hole to be inspected;

9. The axle housing fixture of claim 1, further comprising a datum assembly disposed on the other side of the frame, the datum assembly having a datum surface and a datum hole formed by the datum surface recessed into the datum assembly.

10. The axle housing inspection tool of claim 9 wherein the datum assembly includes at least three datum members respectively disposed on the frame;