CN220083888U - Workpiece detection jig - Google Patents

Abstract

The embodiment of the disclosure discloses work piece detection tool, include: a base and a fixing assembly. The base is provided with a movable groove. The fixed component is movably arranged in the movable groove and is used for loading a workpiece comprising at least two measuring points. The fixed assembly is movable within the movable slot such that each measurement point of the workpiece can be positioned in sequence on the fixed inspection location.

Description

Workpiece detection jig

Technical Field

The disclosure relates to the technical field of workpiece detection, in particular to a workpiece detection jig.

Background

Before the workpiece is assembled in each field, the precision measurement is usually required to be carried out on the workpiece, so that the precision of the workpiece is ensured to meet the assembly requirement. In the related art, a measuring tool such as a height gauge is generally used to measure the size of a plurality of measuring points on a workpiece. In actual operation, after the workpiece is placed on the inspection platform, for a plurality of measurement points in the same workpiece, it is often necessary to move the inspection structure of the inspection tool to each measurement point of the workpiece in order to inspect the accuracy of each measurement point. Alternatively, different measurement points of the workpiece are moved to the inspection tool for manual alignment. For example, the inspection tool is a height gauge, and in the actual operation process, the inspection needle of the height gauge needs to be moved above different measuring points of the workpiece for precision inspection, or the workpiece needs to be directly moved below the inspection needle of the height gauge for manual alignment.

Disclosure of Invention

The embodiment of the disclosure provides a workpiece detection jig, and in order to achieve the above purpose, the disclosure provides the following technical scheme.

The present disclosure provides a workpiece inspection jig, comprising: the base has the movable groove, and fixed subassembly movably sets up in the movable groove, and fixed subassembly is used for loading the work piece that includes two at least measuring points, and fixed subassembly is movable in the movable groove so that each measuring point of work piece can be located fixed detection position in proper order.

The technical scheme of the present disclosure is described in further detail below through the accompanying drawings and examples.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view illustrating a workpiece inspection jig according to some embodiments of the disclosure;

fig. 2 illustrates a schematic structural diagram of a press block of a workpiece detection jig provided by some embodiments of the present disclosure;

fig. 3 illustrates a schematic structural diagram of a fixing assembly of a workpiece inspection jig provided by some embodiments of the present disclosure;

Fig. 4 illustrates a schematic diagram of a press block and a fixing assembly of a workpiece detection jig provided by some embodiments of the present disclosure;

FIG. 5 is a schematic view showing a first limit fitting portion and a limit portion of a fixing assembly of the workpiece inspection jig in the embodiment shown in FIG. 1;

FIG. 6 shows a partial enlarged view of FIG. 5;

FIG. 7 is a schematic diagram showing a second limit fitting portion and a limit portion of a fixing assembly of the workpiece inspection jig in the embodiment shown in FIG. 1;

FIG. 8 shows a partial enlarged view of FIG. 7;

fig. 9 is a schematic perspective view illustrating a workpiece inspection jig according to other embodiments of the present disclosure;

fig. 10 is a schematic structural view of a press block of a workpiece detection jig according to other embodiments of the present disclosure;

FIG. 11 is a schematic structural view of a fixture assembly of a workpiece inspection jig according to other embodiments of the present disclosure;

FIG. 12 is a schematic view of a workpiece being flattened using a press block on a workpiece inspection jig provided in accordance with further embodiments of the present disclosure;

FIG. 13 is a schematic view showing a first limit fitting portion and a first limit portion of a fixing assembly of the workpiece inspection jig in the embodiment shown in FIG. 9;

FIG. 14 is a schematic view showing a second limit fitting portion and a second limit portion of a fixing assembly of the workpiece inspection jig in the embodiment shown in FIG. 9;

FIG. 15 is a schematic view showing a third limit fitting portion and a third limit portion of a fixing assembly of the workpiece inspection jig in the embodiment shown in FIG. 9;

fig. 16 shows a schematic view of the stationary assembly of fig. 13-15 in different stop zones of the movable trough.

In the figure, 1, a base; 11. a movable groove; 12. a limit part; 12a, a first limit area; 12b, a second limiting area; 12c, a third limit area; 121. a first limiting surface; 122. the second limiting surface; 2. a fixing assembly; 21. a movable block; 211. a limit matching part; 211a, a first limit matching part; 211b, a second limit matching part; 211c, a third limit matching part; 211d, a fourth limit matching part; 2111. a first limit mating surface; 2112. the second limit matching surface; 22. fixing the column; 221. a limiting shaft; 222. fixing the end face; 223. a protrusion; 224. a measurement reference section; 23. a body; 231. a support surface; 231a, first support protrusions; 232. a clamping surface; 232a, second support protrusions; 233. a rotation hole; 234. a limit groove; 24. a clamping member; 241. a first structural member; 242. a second structural member; 243. a third structural member; 244. a fourth structural member; 25. positioning columns; 3. briquetting; 31. a through hole; 32. a convex column; 33. a pressing section; 34. a limit protrusion; 341. positioning the notch; 4. a workpiece; 41. a first measurement point; 42. a second measurement point; 43. a third measurement point; 44. a fourth measurement point; a. fixing the detection bit.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The precision requirement of part fields on the workpiece is higher, and the workpiece is usually required to be measured before being assembled, so that the precision of the workpiece is ensured to meet the assembly requirement. The accuracy of several measurement points on the workpiece 4 can typically be measured using a height detection device (e.g., a height gauge, etc.).

In order to improve the measurement efficiency and the measurement accuracy of the workpiece, the embodiment of the disclosure provides a workpiece detection jig, which can be matched with a measuring tool such as a height gauge to measure whether the accuracy of each measuring point of the workpiece 4 meets the requirement. The workpiece detection jig can fix the workpiece 4. The workpiece detection jig can place the workpiece 4 on a platform of a height gauge, and can quickly and accurately move each measuring point of the workpiece 4 fixed on the workpiece detection jig to a fixed detection position a. Therefore, the height gauge needle can detect the height of each measuring point at the fixed detecting position a without moving horizontally, and the measuring points do not need to be manually moved to the fixed detecting position for test alignment. Therefore, the workpiece detection jig provided by the embodiment of the disclosure not only improves the measurement accuracy of the workpiece 4, but also improves the detection efficiency of the workpiece 4.

It should be noted that the fixed detection position may be understood as a fixed position or area in space, e.g. the fixed detection position may be a fixed position which remains unchanged with respect to the platform position of the height gauge. The fixed test site may be located on an extension of the gauge pin.

In some alternative embodiments, referring to fig. 1 and 9, a workpiece inspection jig may include a base 1 and a fixture assembly 2. The base 1 may be mounted on a predetermined structure (e.g., a platform of a height gauge). For example, the base 1 has a mounting portion for snapping into a predetermined structure to fix the base 1, so that the base 1 can be fixed with respect to the predetermined structure. The base 1 has a movable slot 11, the fixed assembly 2 is movably disposed in the movable slot 11, the fixed assembly 2 can be used for loading a workpiece 4 including at least two measuring points, and the fixed assembly 2 is movable in the movable slot 11 so that each measuring point of the workpiece 4 can be sequentially located on the fixed detecting position a. That is, the side surface of the fixed unit 2 is locked to a specific position of the inner edge of the movable groove 11, and the position of the measuring point at the fixed detection position a can be controlled. Thus, the different measuring points can be controlled to be sequentially located at the fixed detecting position a by clamping different side surfaces of the fixed assembly 2 into specific positions (the specific positions can be the same position or different positions) of the inner edge of the movable groove 11. It can be seen that the fixed detection position a can also be understood as a position defined by the cooperation of the side surface of the fixed assembly 2 and the inner edge of the movable groove 11.

The preset structure may be a platform of a height gauge, and the mounting portion may be a limit structure disposed on the base 1. The limiting structure can be in limiting fit with the platform of the height gauge to limit the relative positions of the base 1 and the platform, so that the base can be fixed with the relative positions of the platform. For example, the mounting portion on the base 1 may be limiting plates disposed on two sides of the base, where the distance between the limiting plates is matched with the size of the platform, so that the base 1 is clamped on the platform through the limiting plates. The base 1 and the fixing component 2 can be two single pieces, the base 1 is fixed on the platform, and the fixing component 2 can be freely movably arranged in the movable groove 11.

The workpiece 4 can be placed on a platform of a height gauge by the workpiece detection jig, the fixed assembly 2 can move in the movable groove 11, so that different side surfaces of the fixed assembly 2 can be sequentially clamped into the same or different specific positions of the inner edge of the movable groove 11, and the workpiece 4 can be sequentially positioned at the fixed detection position a without passing through the measuring point. The workpiece detection jig can facilitate the workpiece 4 to move on the height gauge platform rapidly, accurately and stably so as to be matched with a detection needle of the height gauge to carry out precision detection on different measurement points at the fixed detection a position. The workpiece detection jig can improve the accuracy of height gauge measurement and the detection efficiency of the workpiece 4.

In some alternative embodiments, the movable slot 11 may be a blind slot, i.e. the movable slot 11 has a bottom wall, and the fixed component 2 may be supported on the bottom wall and slidably adjustable along the bottom wall. The smoother the surface of which the fixed assembly 2 is made, the higher the detection accuracy. In some alternative embodiments of the present disclosure, the movable slot 11 may penetrate the base 1, and the workpiece inspection jig is configured such that the fixed assembly 2 may be directly supported to the stage of the height gauge in a state of being mounted to the stage of the height gauge. The platform manufacturing process of the height gauge is relatively high, the surface of the platform is relatively horizontal, the movable groove is arranged to be of a through structure, the fixed assembly 2 can be conveniently supported on the platform, the production process requirement of the base is reduced, the bottom wall with high requirement on horizontal parameters is not required to be manufactured on the base 1, and the detection precision of the workpiece 4 is ensured.

It should be understood that the base 1 is mainly used for conveniently and accurately defining the limit area where the fixing assembly 2 is located, so that the base 1 is not an essential technical feature of the workpiece detection fixture if the limit area can be defined in other manners. The limit area is understood to mean an area defined in the movable groove by the side surface of the fixed component 2 cooperating with the inner edge of the movable groove 11, which allows the measuring point to be located at a fixed measuring position. For example, in the case where the platform of the height gauge or the like has adopted the groove provided for the limitation, the above-mentioned workpiece detection jig may not have the base 1, and the limitation of the fixing member 2 can be achieved by placing the fixing member 2 in the groove at this time. Of course, the above-mentioned limit areas may be defined in other manners, and are not limited only herein.

The movable slot 11 has at least one limiting portion 12, and as shown in fig. 7 or 13, the fixed assembly 2 has at least one limiting engagement portion, and a measuring point may be located on the fixed detecting position a in a state where one limiting portion 12 is in limiting engagement with one limiting engagement portion. Alternatively, the above-mentioned limit portion 12 may be located at the inner edge of the movable groove 11, and the limit engaging portion may be located at the side surface of the fixed assembly 2.

The number of the limit matching parts 211 and the number of the limit parts 12 can be multiple, and the limit matching parts 211 and the limit parts are opposite to each other one by one, and the number of the limit matching parts is equal. The limit engaging portion 211 may include only one, and the limit portions 12 include at least two, and the limit engaging portion 211 may be respectively engaged with each limit portion 12 in a limit manner. The limit engaging portions 211 may include at least two, and the limit portion 12 may include only one limit engaging portion, and the limit portion 12 may be engaged with each limit engaging portion.

In one possible embodiment, the movable slot 11 has at least two limit stops 12, and the stationary component 2 is movable within the movable slot 11 such that each limit stop engagement 211 can move a limit stop 12. Each measurement point on the workpiece 4 can be sequentially located on the fixed detection position a in a state where the fixed members 2 are moved so that the limit engaging portions 211 are engaged with each limit portion 12, respectively.

The "limiting portion 12" is understood as a limiting area in the movable groove 11, and the limiting area may be disposed along the inner edge of the movable groove 11, so that the fixed assembly 2 may be conveniently and rapidly moved to the limiting area during workpiece detection. The movable slot 11 has one or more limit parts 12. After the moving fixing assembly 2 moves the limit matching portion 211 to the limit area, the limit matching portion 211 and the limit portion 12 cooperate to limit the fixing assembly 2 to the limit area, so that the workpiece 4 can be limited to the position of the limit area. In a state where the fixed assembly 2 moves to each of the limit areas, or in a state where the limit fitting portion 211 of the fixed assembly 2 is fitted with the limit portion of the movable groove 11 in a limit manner, each measurement point on the workpiece 4 to be measured may be located at the fixed detection position a.

The fixed component 2 can be freely movably arranged in the movable groove 11, so that the fixed component 2 can move to different limit areas in a translational manner in the movable groove 11. When the fixed component 2 moves to any limit area, the fixed component 2 can be in a limit state. In this limit state, the position and posture of the fixed component 2 on the opposite base are unique, the side surface of the fixed component 2 corresponding to the limit fitting portion 211 is engaged with the inner edge of the movable groove 11 corresponding to the limit portion 12, and the fixed component 2 is limited in at least two directions and cannot move. Each limit area corresponds to each measuring point one by one. When the fixed component 2 moves into each limit area, the measuring point of the workpiece 4 corresponding to the limit area can be located at the fixed detection position a. When the movable fixing assembly 2 moves to each limit area to detect corresponding measuring points, the position of the detection needle is not required to be moved, and the detection efficiency is remarkably improved.

When the workpiece detection jig provided by the disclosure is used, an operator only needs to sequentially move the fixing assembly 2 to each limit area so that the limit matching part 211 and the limit part 12 are clamped, and the height data of each measuring point can be detected through the height gauge respectively. The workpiece detection jig is simple to operate, can rapidly detect data, and remarkably improves the detection precision of the workpiece 4 and the detection efficiency of the workpiece 4.

The workpiece 4 has at least two measurement points, taking the case that the workpiece 4 has three measurement points as an example, when the workpiece 4 is detected by adopting the workpiece detection jig, the workpiece 4 can be fixed on the fixed component 2 first, and then the position of the fixed component 2 is moved, so that the fixed component 2 is respectively moved into three limit areas to respectively detect the three measurement points. The fixed component 2 is in the state of each limit area, and the limit matching part 211 and the limit part are in limit matching, so that the outer side surface of the limit matching part 211 and the inner edge of the limit part can be clamped and limited, and at the moment, the measuring point of the workpiece 4 fixed by the fixed component 2 is positioned at the fixed detection position a. As shown in fig. 13, a state diagram of moving the fixing element 2 to the first limit region 12a is shown. Referring to fig. 16, the first limiting area 12a is an area where the fixing assembly 2 is located when the first limiting matching portion and the first limiting portion are matched, and at this time, the first measuring point 41 of the workpiece 4 is located directly below the detecting needle of the height gauge, and the height data of the first measuring point 41 can be detected. Next, referring to fig. 14, a state diagram of moving the fixing element 2 to the second limiting area 12b is shown. Referring to fig. 16, the second limiting area 12b is an area where the fixing assembly 2 is located when the second limiting matching portion and the second limiting portion are matched, at this time, the detecting needle of the height gauge does not need to move on the horizontal plane (or the platform plane), and the second measuring point 42 of the workpiece 4 may be located directly below the detecting needle of the height gauge, so that the height data of the second measuring point 42 may be detected. Next, referring to fig. 15, a state diagram of moving the fixing element 2 to the third limit region 12c is shown. Referring to fig. 16, the third limiting area 12c is an area where the fixing assembly 2 is located when the third limiting matching portion and the third limiting portion are matched, and at this time, the detecting needle of the height gauge does not need to move on the horizontal plane (or the platform plane), and the third measuring point 43 of the workpiece 4 is located right below the detecting needle of the height gauge, so that the height data of the third measuring point 43 can be detected. Fig. 16 is a schematic view showing three states of the fixing assembly 2 and the workpiece 4 provided in fig. 13 to 15 on the same base 1. As can be seen from fig. 16, in all three states, three measuring points on the workpiece 4 can be located on the fixed measuring position a, i.e. all three measuring points can be located directly below the measuring needle of the height gauge. Therefore, the height gauge can realize the precision detection of the three measuring points without moving the detection needle on the horizontal plane when measuring the three measuring points. If the height gauge has detection errors in the direction perpendicular to the platform, as all the measuring points of the workpiece 4 are measured at the same position, the detection errors of the height gauge on all the measuring points are the same, and the detected height values of all the measuring points have no errors, so that the detection precision of the workpiece detection jig is remarkably improved.

In addition to sequentially adjusting each measurement point of the workpiece 4 to the fixed detection position a in a translational manner, the embodiments of the present disclosure may sequentially move each measurement point of the workpiece 4 to the fixed detection position a in a rotational movement manner. For example, the movable slot 11 has a limiting portion 12, and the fixed assembly 2 is rotatably movable at the limiting portion 12 to change the measuring point on the fixed detecting position a. Specifically, for different limit engaging portions, the limit engaging portions are engaged with the limit portions 12 (inner edges of the movable grooves 11), and it can be understood that the side surfaces corresponding to the different limit engaging portions are engaged with the inner edges of the movable grooves corresponding to the same limit portion 12, so that the measuring point can be ensured to be positioned at the fixed detection position a.

After the workpiece 4 is fixed on the workpiece detection jig, when a plurality of measuring points of the workpiece 4 are required to be measured respectively, an operator only needs to adjust the position or angle of the fixed assembly 2, so that each limit matching part of the fixed assembly 2 is in limit matching with the limit part 12 in the movable groove 11 respectively. When a certain limit matching part of the adjusting and fixing assembly 2 is in limit matching with the limit part 12 in the movable groove 11, a measuring point corresponding to the limit matching part on the workpiece 4 can be located on a fixed detection position, data can be conveniently and directly measured through the height gauge, and the position of the detection needle of the height gauge does not need to be adjusted on a horizontal plane (the horizontal plane can be understood to be a plane parallel to a platform plane or perpendicular to the detection needle). The workpiece detection jig provided by the embodiment of the disclosure facilitates detection of each measuring point of the workpiece 4, and is beneficial to improving the detection efficiency of the workpiece 4. Meanwhile, the accuracy and consistency of the measurement of the workpiece 4 can be improved by adopting the detection jig.

The fixed component 2 can rotate and shift in the movable groove 11, so that the limit matching parts 211 on the fixed component 2 are respectively in limit matching with the limit parts 12 in the movable groove 11. When any limit matching part 211 of the fixing assembly 2 is in limit matching with the limit part 12, the fixing assembly 2 can be in a limit state. In this limited state, the fixed assembly 2 is unique in position and posture relative to the card holder 1, and is limited in at least two directions, and cannot move.

In some alternative embodiments, referring to fig. 5 and 6, the stop 12 may include a first stop surface 121 and a second stop surface 122 positioned within the movable slot 11. An included angle is formed between the first limiting surface 121 and the second limiting surface 122. Referring to fig. 6, the limit engaging portion includes a corner portion on the fixing component 2, the corner portion has a first limit engaging surface 2111 and a second limit engaging surface 2112, and an included angle is formed between the first limit engaging surface 2111 and the second limit engaging surface 2112. In a state where any one of the limit fitting portions is in limit fitting with the limit portion 12, the first limit fitting surface 2111 of the limit fitting portion is fitted to the first limit surface 121, and the second limit fitting surface 2112 of the limit fitting portion is fitted to the second limit surface 122.

In the above embodiment, the included angle between the first limiting surface 121 and the second limiting surface 122 in the movable slot 11 is equal to the included angle between the first limiting mating surface 2111 and the second limiting mating surface 2112 of the limiting mating portion on the fixed assembly 2. When the first limit mating surface 2111 and the first limit surface 121 are mated and the second limit mating surface 2112 and the second limit surface 122 are mated, the position of the fixed assembly 2 on the base movable slot 11 is unique. The measuring point of the workpiece 4 corresponding to the limit fitting portion is located right below the detecting needle of the height gauge.

As shown in fig. 6, when the workpiece 4 has four measurement points, the workpiece 4 may be provided with four corner portions each constituting a limit fitting portion. Each corner has a first limit mating surface 2111 and a second limit mating surface 2112. The first stop mating surface 2111 and the second stop mating surface 2112 may be perpendicular. The limiting portion 12 of the movable groove 11 may be a positioning angle, and the positioning angle has a first limiting mating surface 2111 and a second limiting mating surface 2112. The first limit mating surface 2111 and the second limit mating surface 2112 are perpendicular. When measuring the workpiece 4, only the position of the fixed component 2 needs to be moved, so that the four corners on the fixed component 2 are respectively accommodated in the positioning angles of the movable groove 11. When the corner part and the positioning angle are completely embedded, the limit matching part and the limit part 12 can reach the limit matching state. The workpiece detection jig reduces the measurement difficulty and improves the working efficiency.

When the fixing component 2 moves into the corresponding limiting area, the two limiting matching surfaces of the fixing component 2 are respectively and at least partially attached to the two limiting surfaces in the corresponding limiting area. The two limiting surfaces in the limiting area play a role in limiting the position of the fixed assembly 2, and the stability of the fixed assembly 2 is improved, so that when the fixed assembly 2 is positioned in the limiting area, corresponding measuring points on the workpiece 4 fixed on the fixed assembly 2 can be just positioned under the detecting needle of the height gauge.

It will be appreciated that to achieve that the measuring points of the workpiece 4 can be moved to the same position by moving the fixing assembly 2, it is necessary to adaptively design the shape and size of the workpiece 4 to be measured, the fixing assembly 2, and the limit areas.

It will be appreciated that each of the stop portions 12 of the fixed assembly workpiece 4 may also include a first stop surface and a second stop surface within the movable slot 11, as shown in the workpiece inspection jig of fig. 13-16. An included angle is formed between the first limiting surface and the second limiting surface. The limiting and matching part comprises a corner part positioned on the fixed component 2, the corner part is provided with a first limiting and matching surface and a second limiting and matching surface, and an included angle is formed between the first limiting and matching surface and the second limiting and matching surface. In the state that any one of the limit fitting portions is in limit fit with the corresponding limit portion 12, the first limit fitting surface and the first limit surface of the limit fitting portion are fitted, and the second limit fitting surface and the second limit surface of the limit fitting portion are fitted. In this embodiment, the included angle between the first limit surface and the second limit surface of any limit portion 12 in the movable slot 11 may be equal to the included angle between the first limit mating surface and the second limit mating surface of the limit mating portion on the fixed component 2. Therefore, when the limit matching part is matched with the corresponding limit part, the first limit matching surface of the limit matching part is matched with the corresponding first limit surface, and the second limit matching surface of the limit matching part is matched with the corresponding second limit surface, the position of the fixing component on the base movable groove is unique. The measuring point of the workpiece 4 corresponding to the limit fitting portion may be located directly below the detecting needle of the height gauge.

As shown in fig. 8, when the solution of adjusting each measurement point of the workpiece 4 to the fixed detection position a by the rotary movement method is adopted, in the state that the workpiece 4 is loaded on the fixed assembly 2, the distances between each measurement point on the workpiece 4 and the first limit mating surface 2111 on the corresponding limit mating portion may be the same, and the distances between each measurement point on the workpiece 4 and the second limit mating surface 2112 on the corresponding limit mating portion may be the same. Therefore, in the case of rotationally moving the fixed unit 2, each measurement point on the workpiece 4 can be sequentially located on the fixed detection position a.

In the above embodiment, as shown in fig. 5 and 6, the first limiting surface 121 and the second limiting surface 122 may be perpendicular, and a straight line formed by intersecting the first limiting surface 121 and the second limiting surface 122 may be used as an initial position. The direction perpendicular to the first limiting surface 121 is the Y-axis direction, and the direction perpendicular to the second limiting surface 122 is the X-axis direction. When any of the limit fitting portions of the fixing component 2 is in limit fitting with the limit portion 12, a first limit fitting surface 2111 of the limit fitting portion is attached to the first limit surface 121, and a second limit fitting surface 2112 of the limit fitting portion is attached to the second limit surface 122. The distance between the first limit mating surface 2111 of the current limit mating portion and the corresponding measurement point is the Y-axis direction coordinate of the measurement point, and the distance between the second limit surface 122 of the current limit mating portion and the corresponding measurement point is the X-axis direction coordinate of the measurement point. Therefore, in the above embodiment of the present disclosure, the distances between each measurement point on the workpiece 4 and the first limit fitting surface 2111 of the corresponding limit fitting portion are equal, so that it can be ensured that the Y-axis direction coordinates of the measurement points corresponding to each limit fitting portion are equal when any limit fitting portion and the limit portion 12 are in limit fitting. Similarly, the distances between each measuring point on the workpiece 4 and the second limit fitting surface 2112 of the corresponding limit fitting portion are equal, so that it is ensured that the X-axis direction coordinates of the measuring points corresponding to each limit fitting portion are equal when any limit fitting portion is in limit fitting with the limit portion 12. Therefore, when any limit matching part of the fixing assembly 2 is in limit matching with the limit part 12, the corresponding coordinates of the measurement points to be measured of the limit matching parts are the same relative to the initial position. That is, each measurement point may be located at the same position (fixed detection position a) at the time of precision detection.

Referring to fig. 5 and 6, in the measurement process, the first limit matching portion 211a is first clamped into the limit portion 12, and at this time, the first measurement point 41 of the workpiece 4 is located on the fixed detection position a, and the height gauge can test the accuracy of the first measurement point 41. Then, referring to fig. 7 and 8, the fixing assembly is rotated clockwise by 90 degrees, and the second limit engaging portion 211b is locked into the limit engaging portion 12 for limiting. At this time, the second measurement point 42 of the workpiece 4 is located on the fixed detection position a, and the height gauge can test the accuracy of the second measurement point 42. Similarly, the third limit engaging portion 211c is locked into the limit portion 12 for limiting by the clockwise rotation degree again. At this time, the third measurement point 43 of the workpiece 4 is located on the fixed detection position a, and the height gauge can test the accuracy of the third measurement point 43. Finally, the fourth limit fitting portion 211d is locked into the limit fitting portion for limiting by the clockwise rotation degree. At this time, the fourth measurement point 44 of the workpiece 4 is located on the fixed detection position a, and the height gauge can test the accuracy of the fourth measurement point 44.

The workpiece inspection jig of the present disclosure can be used to inspect the precision of various workpieces 4. As an example, the work detection jig may be used for detecting the annular work 4 for fixing the optical element in the optical system. Different optical elements can be fixed on both sides of the annular workpiece 4. In the optical system, each optical element needs to be strictly set according to preset parameters, and the annular workpiece 4 can control the optical elements on two sides to be strictly set according to the preset parameters, so that the imaging quality of the optical system can be ensured. For example, both sides of the annular workpiece 4 may fix the screen and the lens, respectively. The scheme disclosed by the application can be used for detecting that parameters such as thickness, angle and the like between two surfaces of the annular workpiece meet the precision requirement, so that the precision of optical elements such as a screen, a lens and the like fixed on two sides of the annular workpiece can be ensured to meet the requirement. Here, a plurality of points on the annular workpiece satisfying a preset rule may be detected to determine whether the uniformity of the thickness thereof satisfies the accuracy requirement. Each point is understood to be a measuring point on the annular workpiece. As an example, the screen and lens may be rectangular, where the measurement points in the annular workpiece are the four vertices of the rectangle.

In general, the annular workpiece may further be provided with a plurality of bumps, where the bumps are used to support the screen and the lens, and the distance and the inclination angle of the optical elements such as the lens may have a particularly serious influence on the optical imaging quality of the product, and the positional deviation of each bump of the annular workpiece is particularly important, where the bumps are measurement points of the annular workpiece 4.

In some alternative embodiments, referring to fig. 1, 2 and 4, the workpiece detection fixture may further include a pressing block 3, where the pressing block 3 has a through hole 31, and in a state where the pressing block 3 is mounted on the fixing assembly 2, the pressing block 3 can flatten the workpiece 4, and the through hole 31 avoids each measurement point on the workpiece 4.

Taking the plastic workpiece 4 as an example, the plastic workpiece has a large injection molding surface, and the whole size is not easy to ensure. And the workpiece 4 is of a hollow structure, and the injection molding part of the hollow structure often has warping after the product is molded, so that the workpiece is required to be uniformly flattened during measurement, and the workpiece can be measured with high precision. In order to improve measurement accuracy, the workpiece detection jig in the embodiment of the disclosure further comprises a pressing block 3, wherein the pressing block 3 is located on the upper surface of the annular workpiece, and the pressing block 3 can flatten the workpiece 4 so that all salient points or bottom surfaces of one side, close to the base, of the workpiece 4 are on the same horizontal plane.

The gravity center position of the pressing block 3 and the gravity center position of the workpiece on the fixing assembly 2 keep the normal direction of the measuring reference surface to coincide when clamping, so that uniform pressure can be applied to the workpiece, and the warped workpiece can be uniformly flattened by utilizing the self gravity of the pressing block 3.

The middle part of briquetting 3 sets up thru hole 31, has played the effect of dodging each measuring point on work piece 4, and briquetting 3 can not shelter from the measuring direction of the detection needle of altitude rule, ensures that the altitude rule accomplishes the precision measurement smoothly.

In some alternative embodiments, referring to fig. 2, the press block 3 may have a plurality of bosses 32, each boss 32 being supported on the workpiece 4 in a state in which the press block 3 is mounted to the fixing assembly 2. The projections 32 are distributed at the edge of the pressing block 3 and or at the position close to the edge. The studs 32 may be uniformly distributed so that the studs 32 may uniformly distribute gravity to the workpiece 4, facilitating flattening of the warped workpiece 4. When the workpiece 4 is substantially quadrangular, the pressing block 3 may be quadrangular, and four projections 32 are provided on the pressing block 3, and each projection 32 is provided near four corners of the pressing block 3. When the pressing block 3 is pressed on the workpiece 4, the four convex columns 32 of the pressing block 3 respectively prop against the four corners of the workpiece 4, so that the workpiece 4 is uniformly stressed for a circle, the workpiece 4 is uniformly deformed, and the whole workpiece 4 is uniformly flattened.

Each boss 32 may also be disposed at the edge of the through hole 31 on the pressing block 3, and each boss 32 is disposed at intervals along the edge of the through hole 31. Taking the pressing block 3 as a rectangle as an example, the through holes 31 on the pressing block 3 are also rectangle, four convex columns 32 are arranged on the pressing block 3, each convex column 32 is positioned at the edge of the through hole 31, and each convex column 32 is respectively positioned at four corners of the through hole 31.

In some alternative embodiments, referring to fig. 2, 3 and 4, the press block 3 has a pressing portion 33 and a plurality of limit protrusions 34. Each of the limiting protrusions 34 is connected to the pressing portion 33, and each of the limiting protrusions 34 is sequentially disposed at intervals along the edge of the pressing portion 33, and each of the limiting protrusions 34 can be attached to the peripheral side wall of the fixing assembly 2 in a state that the pressing block 3 is mounted on the fixing assembly 2.

The pressing part 33 is in a ring shape and the size can be larger than that of the workpiece 4, the through hole 31 is arranged in the middle of the pressing part 33, and the through hole 31 can be used for avoiding a measuring point on the workpiece 4. Each of the stopper protrusions 34 is vertically connected to the pressing portion 33. Each of the limit protrusions 34 can extend to the fixed assembly 2 in a state where the pressing block 3 is pressed against the workpiece 4, and is attached to the outer wall of the fixed assembly 2. Each limiting convex part 34 is distributed along the circumferential direction of the fixed assembly 2 in sequence, and can limit the pressing part 33, so as to prevent the pressing part 33 from shifting horizontally relative to the fixed assembly 2. The fixed assembly 2 has a movable block 21 and a fixed column 22, the cross-sectional area of the movable block 21 is larger than that of the fixed column 22, the fixed column 22 is vertically connected to the fixed column 22, each limit matching portion is arranged on the movable block 21, one end of the fixed column 22, which is away from the movable block 21, is a fixed end face 222, and the workpiece 4 is supported on the fixed end face 222. The cross section of the fixing post 22 may be non-circular. In this way, in the state that the pressing block 3 is pressed on the workpiece 4, each limit protrusion 34 can extend to different positions of the fixing column 22, and the pressing block 3 can be prevented from rotating around the fixing column 22 by limit fit between each limit protrusion 34 and the outer wall surface of the fixing column 22.

In some alternative embodiments, the circumferential side wall of the fixing component 2 is provided with a plurality of limiting shafts 221, the pressing part 33 is provided with a plurality of sides, at least part of sides are provided with limiting convex parts 34, and at least two adjacent sides of the pressing part 33 are provided with positioning notches 341. In a state where the pressing block 3 is mounted to the fixing member 2, the stopper shaft 221 may be caught at least in the positioning notch 341 of the stopper protrusion 34 on the adjacent two sides of the pressing portion 33.

In the above embodiment, the limiting shaft 221 plays a role in limiting the pressing block 3, so as to prevent the pressing block 3 from shifting, so that the position of the pressing block 3 is kept fixed, and meanwhile, the workpiece 4 flattened by the pressing block 3 is ensured to be kept unchanged in position. The limiting shaft 221 is tightly matched with the positioning notch 341, and the limiting shaft 221 can limit the left-right offset of the pressing block 3 in the direction perpendicular to the limiting shaft 221. In order to improve the limiting effect, notches may be provided on the limiting protrusions 34 on the sides of the press block 3.

If the positioning notches 341 are formed on the two opposite limit protrusions 34 of the pressing block 3, the extending directions of the two limit shafts 221 matched with the two positioning notches 341 are identical, and the two limit shafts 221 are located in the same straight line. Two spacing axles 221 all play the effect that carries out spacingly to briquetting 3 in same direction, and the structural redundancy, and the more location opening 341 and spacing axle 221 quantity that sets up, can make the precision of each structure position reduce. Thus, the disclosed embodiments may optimally retain only one locating notch 341 and one limiting shaft 221 in the same direction.

In order to both enhance the retaining effect on the press block 3 and avoid providing too many notches and retaining shafts 221, in some alternative embodiments only notches may be provided on the retaining ledges 34 on two or more adjacent sides of the press block 3. Because the extending directions of the limiting shafts 221 matched with the openings are different, the limiting shafts 221 limit the pressing blocks 3 in different directions, so that the limiting effect on the pressing blocks 3 is improved, and the offset of the pressing blocks 3 is greatly reduced.

Here, taking the briquette 3 as an example of a quadrangle, positioning notches 341 are provided on the limit protrusions 34 on two sides adjacent to four sides of the briquette 3. The fixed column 22 is provided with only two limiting shafts 221, and the two limiting shafts 221 are respectively clamped into the two positioning notches 341. The extending directions of the two limiting shafts 221 are perpendicular, and then one limiting shaft 221 is used for limiting the deviation of the pressing block 3 in the direction of the second limiting shaft 221, and the second limiting shaft 221 is used for limiting the deviation of the pressing block 3 in the direction of the first limiting shaft 221. Therefore, the pressing block 3 can be limited in two directions perpendicular to each other, and the pressing block 3 is stable in position and not easy to deflect.

When the pressing block 3 is triangular, the positioning notch 341 can be formed on the limiting protrusion 34 on one side of the pressing block 3, and the positioning notch 341 is in spacing fit with the limiting shaft 221 on the fixing column 22, so that the pressing block 3 is stable in position.

When the pressing block 3 is hexagonal, the positioning notch 341 may be disposed on the limiting protruding portions 34 on two adjacent sides of the pressing block 3, and the two positioning notches 341 are in spacing fit with the limiting shaft 221 on the fixing column 22. The direction of the two limiting shafts 221 is not used, and the pressing block 3 can be limited in two directions, so that the pressing block 3 is stable in position. The pressing block 3 can also be provided with the positioning notch 341 on the limiting convex part 34 on the three adjacent sides, the three positioning notches 341 are in limiting fit with the three limiting shafts 221 on the fixed column 22, the directions of the three limiting shafts 221 are not used, and the pressing block 3 can be limited in three directions, so that the position of the pressing block 3 is stable.

In some alternative embodiments, referring to fig. 3, a plurality of protrusions 223 are provided on the fixing end surface 222 at the top of the fixing post 22 of the fixing assembly 2, and in a direction along the vertical fixing end surface 222, the extending lengths of the protrusions 223 are equal, and the workpiece inspection jig is configured such that each protrusion 223 is respectively supported on the surface of the workpiece 4 in a state that the workpiece 4 is loaded on the fixing assembly 2.

In the above embodiment, the workpiece 4 may not be directly attached to the fixed end surface 222, the workpiece 4 is supported on each protrusion 223, and a gap is formed between the workpiece 4 and the fixed end surface 222, so that the fixed end surface 222 is prevented from interfering with the workpiece 4, and the workpiece 4 cannot be flattened or is difficult to be flattened. One side of the workpiece 4 in the thickness direction is provided with measurement points, and each measurement point may be a bump provided on the surface of the workpiece 4. Each of the projections 223 on the fixed end face 222 is supported on the other side face of the workpiece 4 in the thickness direction.

The area of the fixed end face 222 is large. Because of the process precision problem, the fixed end face 222 is generally difficult to be an absolute plane, if the workpiece 4 is directly placed on the fixed end face 222, there is a possibility that a local area between the fixed end face and the workpiece cannot be completely attached, so that the position stability of the workpiece 4 is affected, and because the fixed end face 222 supports the bottom of the workpiece 4 in a large area, the workpiece 4 is not easy to be flattened by the pressing block 3. In the above-described embodiment of the present disclosure, a plurality of protrusions 223 may be provided on the fixing end surface 222, and then the top end surface of the protrusion 223 and the fixing end surface 222 are not in the same plane, and the top end surface of the protrusion 223 and the fixing end surface 222 are parallel. Compared with the workpiece 4 directly supported on the fixed end face 222, the total area of the top end face of each protrusion 223 is smaller than the fixed end face 222, so that the contact area of the pressing block 3 and the fixed assembly 2 is reduced, and the workpiece 4 is stably supported on the fixed assembly 2.

The fixing end face 222 may be polygonal, taking a rectangle as an example, the fixing end face 222 has four corners, each corner is provided with a protrusion 223, by arranging the fixing end face 222 on each corner of the fixing end face 222, the mutual distance between the protrusions 223 is larger, and the protrusions 223 are located at the edge positions of the fixing end face 222, so that the support stability is better. The work 4 is not liable to shake while the work 4 is supported on the projections 223.

The heights of the protrusions 223 on the fixing end surface 222 are the same so that the fixing post 22 can smoothly support the work 4, and the work 4 located on the protrusions 223 is not skewed. The height difference of each stud 32 may be required to be within 1um to meet the accuracy requirements of the workpiece 4.

In some alternative embodiments, the workpiece 4 may have a plurality of mating projections, and the workpiece inspection jig is configured such that each projection 223 is respectively engaged with each mating projection in a state in which the workpiece 4 is loaded on the fixing assembly 2.

The work piece 4 is provided with mating projections which provide the fulcrum for the projections 223 on the fixed end face 222. The bottom end face of the mating protrusion is a plane, the top end face of the protrusion 223 is a plane, and the bottom end face of the mating protrusion is attached to the top end face of the protrusion 223. When the workpiece 4 is substantially rectangular, the four corners of the workpiece 4 are respectively provided with a mating protrusion, and the fixed end face 222 is also substantially rectangular, the four corners of the fixed end face 222 are respectively provided with a protrusion 223, and in a state that the workpiece 4 is placed on the fixed column 22, the four protrusions 223 on the fixed end face 222 are respectively supported on the four mating protrusions of the workpiece 4, so that the workpiece 4 is kept in a stable state.

In some alternative embodiments, referring to fig. 3 and 4, a measurement reference portion 224 is also provided on the fixing end surface 222 of the fixing assembly 2 in a protruding manner. When the workpiece 4 is placed on the fixed end face 222 of the fixed post 22, the workpiece 4 shields the protrusion 223 on the fixed end face 222, so that the height gauge cannot measure the distance between the protrusion 223 and the measurement point. In the present disclosure, the measurement reference portion 224 is disposed at the middle position of the fixed end surface 222, and when the workpiece 4 and the pressing block 3 are both supported on the fixed end surface 222, because the middle portion of the workpiece 4 has a middle hole and the middle portion of the pressing cover has a through hole 31, the measurement reference portion 224 is not covered, so that the height gauge can conveniently measure the measurement reference portion 224, and the zeroing operation can be performed.

The extension length of the measurement reference portion 224 and the extension length of the projection 223 are equal in a direction perpendicular to the fixed end face 222. The upper surface of the measurement reference portion 224 and the upper surface of each protrusion 223 are located in the same plane, and the height position of the measurement reference portion 224 is the height position of each protrusion 223.

In some alternative embodiments, the movable slot 11 may be designed such that a limit area of the measurement reference portion 224 is formed in the movable slot 11, and when the fixed component 2 moves into the limit area, the measurement reference portion 224 on the fixed component 2 may be located on the fixed detection position a, so that the zeroing operation in the measurement process is facilitated, and the accuracy of detecting the measurement point is further improved.

For example, two limiting surfaces may be disposed in the limiting area, and an included angle is formed between the two limiting surfaces, and when the fixing component 2 moves into the corresponding limiting area, two adjacent surfaces of the fixing component 2 are respectively attached to the two limiting surfaces in the corresponding limiting area. The two limiting surfaces in the limiting area play a role in limiting the position of the fixed assembly 2, and the stability of the fixed assembly 2 is improved, so that when the fixed assembly 2 is located in the limiting area, the measuring reference part 224 on the fixed assembly 2 is located right below the detecting needle of the height gauge.

It should be noted that the zeroing operation may be performed before each measurement point is measured, or the zeroing operation may be performed before a measurement is performed at a certain measurement point.

In some alternative embodiments, the fixed assembly 2 may not be moved in a position such that the measurement datum 224 is moved onto the fixed test site a. The position of the measurement reference portion 224 remains unchanged when the fixed assembly 2 is adjusted such that each of the limit fitting portions of the fixed assembly 2 is in limit fit with the limit portion 12 on the base, respectively. For example, in the case where the workpiece 4 is fixed to the fixed unit 2, the reference portion 224 is surrounded by each measurement point of the workpiece 4, and the distances from the reference portion 224 to the measurement points are equal. So at every time returning to zero, this measurement benchmark all is located the coplanar, and fixed subassembly 2 all is located the coplanar of the platform of altitude gage promptly for measurement process keeps the uniformity, satisfies work piece 4 measurement accuracy requirement.

The fixed component 2 is provided with a supporting surface 231, the supporting surface 231 is a flat surface, and when the fixed component 2 is placed in the movable groove of the base, the supporting surface 231 can be directly attached to the platform of the height gauge. The fixture 2 shown in fig. 4 may also be provided with a support surface so that the fixture can be fitted to the platform of the height gauge.

In some alternative embodiments, as shown in fig. 10, the fixing component 2 has a supporting surface 231, a plurality of first supporting protrusions 231a are disposed on the supporting surface 231 at intervals, each first supporting protrusion 231a is disposed on an edge of the supporting surface 231, each first supporting protrusion 231a is provided with a first protruding plane, and in a state that the workpiece inspection fixture is mounted on the platform of the height gauge, the first protruding planes are attached to the platform.

The surface of the fixing component 2 facing the platform may be a supporting surface 231, and the supporting surface 231 has a larger area. Because of the problem of process precision, the supporting surface 231 and the upper surface of the platform are not absolute planes, if the supporting surface 231 is directly placed on the upper surface of the platform, there is a possibility that a local area between the supporting surface 231 and the upper surface of the platform is not difficult to be completely attached, so that the position stability of the workpiece 4 is affected, and further the detection precision of the workpiece 4 is affected. In the embodiment of the present disclosure, a plurality of first supporting protrusions 231a are disposed on the supporting surface 231, so that the first protruding plane of the first supporting protrusions 231a and the supporting surface 231 are not in the same plane, and the first protruding plane and the supporting surface 231 are parallel. For the supporting surface 231 directly supports on the platform, the total area of each first convex plane of the present disclosure is smaller than the supporting surface 231, which reduces the contact area between the fixing component 2 and the platform, and is beneficial for the stable support of the fixing component 2 on the platform.

The supporting surface 231 may be polygonal, taking a rectangle as an example, the supporting surface 231 has four corners, each corner is provided with a first supporting protrusion 231a, and by disposing the first supporting protrusions 231a on each corner of the supporting surface 231, the first supporting protrusions 231a are relatively spaced apart from each other, and the supporting protrusions are located at the edge positions of the supporting surface 231, so that the supporting stability is better. When the fixing component 2 is supported on the upper surface of the platform, the fixing component 2 is not easy to shake.

The workpiece 4 may be a structural member constituting different equipment devices, and the workpiece 4 to be detected may be the workpiece 4 to be detected in each equipment device. The measurement point may be a substructure to be tested in the workpiece 4. The at least two measurement points may be different substructures or may also be different regions of the same substructures. As an example, the measurement point may be a point on a carrier table for carrying other structures. The above-mentioned equipment device may be a device such as a mobile phone, and the workpiece 4 to be detected may be a stand platform for carrying, for example, a screen of the mobile phone in a housing of the device such as the mobile phone. In the present disclosure, there is no unique limitation on the work 4 and the measurement point.

In some alternative embodiments, the workpiece 4 may be an optical lens frame for carrying optical elements. Typically, the optical lens frame may fix the optical lenses in the optical system so that the optical elements may be set according to preset parameters.

As an example, the optical lens frame may be a frame designed to facilitate fitting of an optical lens such as a curved lens in an optical system to a preset parameter, and a plurality of support tables may be provided in the frame in advance. When the optical system is assembled and adjusted, the optical lens can be assembled and adjusted to meet optical expectations only by buckling the optical lens into the optical lens frame and stabilizing the optical lens frame on each supporting table.

Only by improving the precision of each support table, the installation of the optical lens can be made to meet the expectations. In general, the accuracy of each support table can be measured by a height gauge. For different optical lens frames and different support tables on the same optical lens frame, it is often necessary to move the optical lens frame on a stage of a height gauge to measure the different optical lens frames and the different support tables on the same optical lens frame, and to see from the test results whether the support tables in each optical lens frame meet a preset accuracy. The optical lens frame has at least two measurement points, which may be the support table above or other structure associated with the height position of the support table. It will be appreciated that the workpiece 4 is not limited to an optical lens frame, and is not limited thereto.

Referring to fig. 9, 10 and 11, the fixing assembly 2 may include a body 23 and a clamping member 24, the clamping member 24 including a first structural member 241 and a second structural member 242, the first structural member 241 being connected to the body 23, the second structural member 242 being connected to the first structural member 241, the second structural member 242 being capable of being moved toward or away from the body 23 to cooperatively clamp or release the workpiece 4 with the body 23.

The first structural member 241 of the clamping member may apply a pulling force to the second structural member 242 connected thereto such that the second structural member 242 may generate a force toward the body 23, thereby enabling the second structural member 242 of the clamping member 24 to apply a clamping force to the workpiece 4 to clamp the workpiece 4 (e.g., an optical lens frame) in place. For other modes of fixing the workpiece 4, the clamping and fixing workpiece 4 provided by the embodiment of the disclosure is simpler in structure, good in fixing effect and convenient to detach. The body 23 and the clamping member 24 may be sequentially arranged along a horizontal direction, and if the bottom of the workpiece 4 has no supporting structure, the workpiece 4 and the second structural member 242 or the body 23 may be kept at a fixed longitudinal position by virtue of friction force.

The first structural member 241 is connected to the body 23, while the second structural member 242 may be indirectly connected to the first structural member 241. The second structural member 242 may be connected to the first structural member 241 by a fourth structural member 244. For example, the first structural member 241 and the second structural member 242 may be vertically connected to both ends of the fourth structural member 244, respectively. The second structural member 242 and the first structural member 241 have a sufficient distance therebetween, so that when the workpiece 4 is clamped, the fourth structural member 244 can extend to the inner side of the workpiece 4, so that the second structural member 242 can be pressed against a corresponding position in the workpiece 4, thereby facilitating clamping of the workpiece 4 and preventing displacement of the workpiece 4.

In some alternative embodiments, an elastic member is connected between the first structural member 241 and the body 23, wherein the elastic member is in a stretched state to apply an elastic force to the first structural member 241 toward the body 23 so that the second structural member 242 and the body 23 can clamp the workpiece 4.

In the disclosed embodiment, the elastic member applies an elastic force toward the body 23 to the first structural member 241 such that the second structural member 242 has a tendency to move toward the body 23. In the state that the workpiece detection jig clamps the workpiece 4, the second structural member 242 can be propped against one side of the workpiece 4, which is away from the main body, and the second structural member 242 and the main body 23 are matched to clamp and fix the workpiece 4. In order to reduce the space of the surface of the body 23 for accommodating the workpiece 4 and to avoid interference between the elastic member and the workpiece 4, a recess may be provided in the body 23 in which the elastic member can be fitted. The first structural member 241 may also extend into the recess, and the first structural member 241 is connected to the elastic member. The recess has a depth along which the first structural member 241 may extend and retract. When it is desired to clamp the workpiece 4, the clamp 24 may be moved to a side remote from the body 23 such that the first structural member 241 slides outwardly along the recess, with the resilient member in tension. After the workpiece 4 is adjusted in place, the clamp 24 is released and the resilient member recovery deformation can apply a pulling force to the first structural member 241 toward the side of the body 23 such that the second structural member 242 is pressed against the workpiece 4.

In some alternative embodiments, the body 23 has a clamping surface 232, the clamping surface 232 is provided with a second supporting protrusion 232a, the second supporting protrusion 232a has a second protruding plane, and in a state in which the workpiece 4 is clamped by the workpiece inspection jig, the workpiece 4 may be located between the second structural member 242 and the second protruding plane.

The clamping surface 232 is provided with a second supporting protrusion 232a in a protruding manner, and can be matched with the second structural member 242 to clamp and fix the workpiece 4. Two second supporting protrusions 232a may be provided on the clamping surface 232, and the two second supporting protrusions 232a may be provided at intervals. And two clamping pieces 24 may be disposed on the fixing assembly 2, where the two clamping pieces 24 are disposed at intervals, and as shown in the figure, the two clamping pieces 24 respectively cooperate with two second convex planes to clamp the workpiece 4. Through the setting of two clamping pieces 24 and two second support convex parts 232a, can be at work piece 4 along square both sides of length, centre gripping work piece 4 respectively for work piece 4 both sides balance atress prevents that work piece 4 is crooked, has improved the fixed effect of centre gripping, and work piece 4 can keep in fixed position, does benefit to the detection of accomplishing work piece 4 precision smoothly.

In some alternative embodiments, referring to fig. 10, 11 and 12, the securing assembly 2 may include a locating post 25 provided on the body 23, and the locating post 25 may be configured to mate with a locating mating hole in the workpiece 4. In this scheme, except that adopt the mode of centre gripping to fix between work piece 4 and the fixed subassembly 2, still adopted reference column 25 and location mating hole to carry out spacing cooperation, the fixed effect of work piece 4 has been improved, and work piece 4 can keep the fixed displacement that does not take place with fixed subassembly 2 to keep the position, has improved the detection precision. If the workpiece 4 is clamped by the clamping member 24 and the body 23, the workpiece 4 moves downwards under the action of gravity, which seriously affects the detection accuracy. In the embodiment of the disclosure, the workpiece 4 and the fixing assembly 2 further adopt a scheme of inserting and fixing the positioning column 25 and the positioning matching hole, so that the force for supporting the workpiece 4 can be provided, and the workpiece 4 is prevented from sliding downwards under the action of gravity. The positioning posts 25 and the positioning mating holes may each extend in a horizontal direction, or, in other words, the extending directions of the positioning posts 25 and the positioning mating holes are all parallel to the upper surface of the platform. The number of the positioning columns 25 can be two or more, the number of the positioning matching holes is equal to that of the positioning columns 25, the diameter of the positioning columns 25 is matched with the inner diameter of the positioning holes, and the position of the workpiece 4 is defined more accurately through the design of a plurality of positioning matching columns and a plurality of positioning matching holes. The clamping assembly and the body 23 mainly limit the workpiece 4 in the horizontal direction, and the positioning and matching column mainly limit the workpiece 4 in the longitudinal direction. The clamping assembly and the positioning column 25 are matched to carry out omnibearing limiting on the workpiece 4, so that the workpiece 4 is fastened on the fixed assembly 2, and the workpiece 4 is not easy to shift relative to the fixed assembly 2.

The positioning column 25 can be arranged on the clamping surface 232, so that when the workpiece 4 contacts the clamping surface 232, the positioning column 25 can be inserted into the positioning matching hole of the workpiece 4 in a homeopathic manner. For example, two second supporting protrusions 232a may be disposed on the clamping surface 232, and positioning posts 25 may be disposed on the second protruding planes of the two second supporting protrusions 232 a. When the workpiece 4 is clamped, the workpiece 4 is close to the two second convex planes, and then the position of the workpiece 4 is adjusted, so that the positioning columns 25 on the two convex planes are smoothly inserted into the two positioning matching holes on the workpiece 4, and the workpiece 4 is initially positioned. The clamp 24 is then operated again to press against the workpiece 4 so that the workpiece 4 remains constrained to the locating post 25 and is not easily disengaged from the locating post 25. The positioning matching hole of the workpiece 4 may be a hole which is set for realizing the function of the workpiece 4, the set hole may be multiplexed when the workpiece 4 is accurately detected, and correspondingly, the specific position of the positioning column 25 on the clamping surface 232 may be defined according to the multiplexed hole of the workpiece 4. Alternatively, the positioning hole in the workpiece 4 may be a hole in the workpiece 4 designed to mate with the positioning post 25, where the specific position of the positioning post 25 on the clamping surface 232 may be defined as required, and there is no specific limitation.

In some alternative embodiments, the body 23 may be provided with a rotation hole 233, and the rotation hole 233 may be understood as a possible embodiment of the "recess" above. The first structural member 241 may be cylindrical, the first structural member 241 is rotatably connected to the rotation hole 233, and elastic members are connected to the inner walls of the first structural member 241 and the rotation hole 233.

In this scheme, the elastic component can be the spring, and the diapire of rotatory hole 233 can be connected to elastic component one end, and first structure 241 is connected to elastic component's the other end, and first structure 241 can be rotatory along the circumference of rotatory hole 233, and first structure 241 can also slide in order to drive second structure 242 and be close to or keep away from body 23 along the extending direction of rotatory hole 233 simultaneously.

The rotatable engagement of the first structural member 241 and the rotation hole 233 facilitates the fixing and removal of the workpiece 4. When the workpiece 4 needs to be mounted, the clamping member 24 may be rotated first so that the second structural member 242 is away from the second supporting protrusion 232a, avoiding the fixed position of the workpiece 4. Then, it is convenient to place the work 4 on the second support protrusion 232a so that the positioning posts 25 on the second support protrusion 232a can be inserted into the rotation-fit holes. Then, the clamping piece 24 is pulled outwards, the clamping piece 24 is rotated reversely, the clamping piece 24 is released, the clamping piece 24 abuts against the workpiece 4 under the elastic force of the elastic component, and the clamping piece 24 is matched with the body 23 to fix the workpiece 4.

In some alternative embodiments, referring to fig. 10 and 11, the body 23 is provided with a limiting groove 234 communicating with the rotation hole 233, and the clamping member 24 further includes a third structural member 243, where the third structural member 243 is connected to the first structural member 241, and the third structural member 243 is limited in the limiting groove 234 in a state where the fixing assembly 2 fixes the workpiece 4.

In this embodiment, in the state that the clamping member 24 and the body 23 clamp and fix the workpiece 4, the third structural member 243 is just limited in the limiting groove 234, so that the clamping member 24 is positioned, the clamping member 24 can keep the state of clamping and fixing the workpiece 4, and the fixing effect on the workpiece 4 is improved. The position where the second structural member 242 applies force to the workpiece 4 is unchanged, and the workpiece 4 can be kept unchanged in a fixed posture. The extending direction of the limiting groove 234 and the extending direction of the rotation hole 233 have an included angle. For example, the extending direction of the limiting groove 234 may be perpendicular to the extending direction of the rotation hole 233.

When the workpiece 4 needs to be disassembled, the clamping member 24 is pulled in a direction away from the body 23, so that the third structural member 243 is separated from the limiting groove 234, and then the clamping member 24 is rotated, so that the second structural member 242 is away from the second supporting protrusion 232a. Subsequently, the clamping member 24 is released, the third structural member 243 on the clamping member 24 can be supported on the clamping surface 232 such that the end of the third structural member 243 is spaced from the body 23, and no external force is required, the third structural member 243 can be kept in a state of being spaced from the second convex plane of the second supporting protrusion 232a, and finally the workpiece 4 can be easily removed.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the disclosure to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims (6)

1. A work piece detects tool, its characterized in that includes:

the base is provided with a movable groove;

the fixed component is movably arranged in the movable groove and is used for loading a workpiece comprising at least two measuring points;

the fixed component can move in the movable groove so that each measuring point of the workpiece can be positioned on the fixed detection position in sequence.

2. The workpiece inspection jig of claim 1, wherein the movable slot penetrates the base, the workpiece inspection jig being configured such that the fixed assembly is supported on a platform of the height inspection device in a state of being mounted on the platform of the height inspection device;

the movable groove and the fixed assembly are used for adjusting the measuring point to a fixed detecting position in any one of the following matching modes:

the movable groove is provided with at least one limiting part, the fixed assembly is provided with at least one limiting matching part, and one measuring point is positioned on the fixed detection position in a state that one limiting part is in limiting matching with one limiting matching part;

The movable groove is provided with at least two limiting parts, the fixed assembly can move to any one of the limiting parts in the movable groove, and each measuring point on the workpiece can be sequentially positioned on the fixed detection position under the state that the fixed assembly moves to each limiting part respectively;

the movable groove is provided with a limiting part, and the fixed component can move rotationally at the limiting part to change the measuring point on the fixed detection position.

3. The workpiece detection jig according to claim 2, wherein the limit portion includes a first limit surface and a second limit surface, an included angle is formed between the first limit surface and the second limit surface, the limit fitting portion includes a first limit fitting surface and a second limit fitting surface, an included angle is formed between the first limit fitting surface and the second limit fitting surface, and in a state in which the limit portion and the limit fitting portion are in limit fitting, the first limit fitting surface and the first limit surface are fitted together, and the second limit fitting surface and the second limit surface are fitted together;

and in the state that the workpiece is loaded on the fixing assembly, the distances between each measuring point on the workpiece and the first limiting matching surface on the corresponding limiting matching part are the same, and the distances between each measuring point on the workpiece and the second limiting matching surface on the corresponding limiting matching part are the same.

4. The workpiece inspection jig according to any one of claims 1 to 3, wherein the workpiece inspection jig further comprises a press block having a through hole, a pressing portion, a plurality of bosses, and a plurality of limit protrusions;

each limiting convex part is connected to the pressing part, and each limiting convex part is sequentially arranged at intervals along the edge of the pressing part;

a plurality of limiting shafts are arranged on the peripheral side wall of the fixing assembly;

the pressing part is provided with a plurality of side edges, and at least part of the side edges are provided with the limit convex parts;

the limiting convex parts on at least two adjacent side edges of the pressing part are provided with positioning notches;

under the briquetting install in fixed subassembly state, the briquetting can flatten the work piece, the thru hole dodges each measuring point on the work piece, each projection supports on the work piece, each spacing convex part laminating in fixed subassembly week lateral wall, spacing axle card is gone into the location breach of spacing convex part on two adjacent sides on the pressure portion at least.

5. The workpiece detection jig according to any one of claims 1 to 3, wherein the fixing member has a supporting surface, and a measurement reference portion and a plurality of projections are provided on a fixing end surface of the fixing member;

The extension length of each protrusion is equal along the direction perpendicular to the fixed end surface;

the workpiece is provided with a plurality of matching convex parts, and the workpiece detection jig is configured to be respectively attached to each matching convex part in a state that the workpiece is loaded on the fixed assembly; the support surface is provided with a plurality of first support convex parts at intervals, each first support convex part is arranged at the edge of the support surface, and each first support convex part is provided with a first convex plane;

and in a state that the workpiece detection jig is arranged on a platform of the height gauge, the first convex plane is attached to the platform.

6. The workpiece detection jig as claimed in any one of claims 1 to 3, wherein the fixing assembly comprises a body, a clamping piece, a fourth structural piece and a positioning column arranged on the body, wherein the positioning column is used for being inserted into a positioning matching hole on a workpiece;

the clamping piece comprises a first structural piece, a second structural piece and a third structural piece, the first structural piece is connected with the body, the third structural piece is connected with the first structural piece, the second structural piece is connected with the first structural piece, the first structural piece and the second structural piece are respectively and vertically connected with two ends of the fourth structural piece, and the second structural piece can be close to or far from the body to clamp or release a workpiece with the body;

The body is provided with a rotating hole and a limiting groove communicated with the rotating hole, the first structural member is rotatably connected with the rotating hole, the inner walls of the first structural member and the rotating hole are connected with an elastic member, and the elastic member is in a stretching state so as to apply elastic force towards the body to the first structural member, so that the second structural member and the body clamp a workpiece;

the body is provided with a clamping surface, the clamping surface is provided with a second supporting convex part, and the second supporting convex part is provided with a second convex plane;

in a state that the workpiece detection jig clamps a workpiece, the workpiece is positioned between the second structural member and the second convex plane;

and in the state that the fixing assembly is used for fixing the workpiece, the third structural part is limited in the limiting groove.