Positioning tool

Abstract

The utility model belongs to the technical field of aircraft assembly, and particularly relates to a positioning tool. The positioning tool comprises a positioning frame, the positioning frame is of a frame-shaped structure, a plurality of positioning arm assemblies are arranged on the two opposite sides of the positioning frame, each positioning arm assembly comprises a supporting arm and a clamping piece, the first end of each supporting arm is rotationally installed on the positioning frame, and the second end of each supporting arm extends towards the other opposite side of the positioning frame; the clamping piece is installed at the second end of the supporting arm and used for clamping a piece to be added. The positioning arm assemblies are arranged on the positioning frame, the clamping pieces of the positioning arm assemblies can clamp the clamping ends of the to-be-added pieces, the to-be-added pieces are effectively fixed, the supporting arms of the multiple positioning arm assemblies are rotationally arranged on the positioning frame so that the clamping positions can be flexibly selected and the to-be-added pieces can be avoided, and therefore the to-be-added pieces can be accurately positioned; the positioning efficiency of the to-be-added part is improved, the positioning tool can adapt to the situation that the to-be-added part is provided with the clamping end, and the application range of the positioning tool is widened.

Description

Technical Field

[0001] This utility model relates to the field of aircraft assembly technology, and in particular to a positioning tool. Background Technology

[0002] During the development of aircraft panel models, verification tests are required for each model of panel. This involves positioning and fixing the panel and the components to be installed.

[0003] In existing technologies, the part to be installed is typically positioned and fixed manually, which is not accurate enough and is time-consuming and labor-intensive. Alternatively, positioning fixtures can be used to position the part, but existing positioning fixtures cannot effectively fix the part and are not suitable for situations where the part has a clamping end that needs to be clamped. Therefore, there is an urgent need to propose a positioning fixture to solve the above problems. Utility Model Content

[0004] One objective of this utility model is to provide a positioning fixture to solve the technical problems in the prior art, such as the inability to accurately and efficiently position the part to be installed and the low adaptability of the part to be installed.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] A positioning fixture includes a positioning frame, which has a frame-like structure. Multiple positioning arm assemblies are provided on both opposite sides of the positioning frame. Each positioning arm assembly includes a support arm and a clamping member. A first end of the support arm is rotatably mounted on the positioning frame and a second end extends toward the opposite side of the positioning frame. The clamping member is mounted on the second end of the support arm and is used to clamp the part to be installed.

[0007] Optionally, the clamping member includes a positioning post and a movable arm. The positioning post is used to insert into a positioning hole on the part to be installed, and the movable arm can move closer to or further away from the positioning post to clamp the part to be installed.

[0008] Optionally, the clamping member includes a support plate disposed at the second end of the support arm, and the extension direction of the support plate is set at an angle to the extension direction of the support arm. The positioning post and the movable arm are disposed on the support plate.

[0009] Optionally, the support arm can extend and retract along its own length.

[0010] Optionally, the first end of the support arm is provided with a mounting component, the positioning frame is provided with a mounting base, both the mounting component and the mounting base are provided with through holes, and the positioning arm assembly further includes a rotating shaft, which passes through the through holes on the mounting component and the mounting base to enable the mounting component and the mounting base to be rotatably connected.

[0011] Optionally, the mounting component is provided with a first fixing hole, and the mounting base is provided with a second positioning hole. At least one of the first fixing hole and the second positioning hole is provided in multiples. The positioning arm assembly includes a locking member, which passes through the aligned first fixing hole and the second fixing hole to lock the mounting component and the mounting base.

[0012] Optionally, the upper and lower edges of the positioning frame are respectively provided with a set of positioning arm assemblies, and each set of positioning arm assemblies includes multiple positioning arm assemblies spaced apart in the horizontal direction.

[0013] Optionally, the upper and lower edges of the positioning frame are respectively provided with a set of side positioning members. Each set of side positioning members includes multiple side positioning members spaced apart in the horizontal direction. The upper and lower sets of side positioning members cooperate to abut against the part to be installed.

[0014] Optionally, a side clamp is provided at one end of the side positioning member away from the edge of the positioning frame. The side clamp has two clamping parts that can move closer to or further away from each other to clamp the part to be installed.

[0015] Optionally, the positioning frame is provided with side blocks on both the left and right opposite sides, and at least one of the side blocks can move in the left and right direction so that the side blocks on both sides cooperate to clamp the workpiece.

[0016] And / or, the positioning fixture further includes a bottom stop, which is disposed on the lower side of the positioning frame to support the workpiece;

[0017] And / or, the positioning fixture further includes multiple surface positioning components, which are installed across the upper and lower edges of the positioning frame, and can abut against one side of the workpiece, and the surface positioning components have the same curvature as the side of the workpiece.

[0018] Optionally, the surface positioning member is provided with a plurality of adsorption members at intervals along its own length direction, and the adsorption members can be adsorbed onto the side of the workpiece.

[0019] The beneficial effects of this utility model are:

[0020] This utility model proposes a positioning fixture, which is provided with a frame-shaped positioning frame and positioning arm assemblies on the positioning frame. The clamping parts of the positioning arm assemblies can clamp the clamping end of the part to be installed, so that the part to be installed is effectively fixed. The support arms of multiple positioning arm assemblies are rotatably set on the positioning frame to flexibly select the clamping position and avoid the part to be installed, so as to accurately position the part to be installed, improve the positioning efficiency of the part to be installed, and make the positioning fixture adaptable to the situation where the part to be installed has a clamping end, thus expanding the applicability of the positioning fixture. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a positioning tool provided in an embodiment of this utility model;

[0023] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 This is another structural schematic diagram of a positioning tool provided in an embodiment of the present utility model;

[0025] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0026] Figure 5 This is a schematic diagram of the positioning arm assembly provided in this embodiment of the utility model.

[0027] Figure 6 This is another structural schematic diagram of a positioning tool provided in an embodiment of the present utility model.

[0028] In the picture:

[0029] 1. Positioning framework;

[0030] 2. Positioning arm assembly; 21. Clamping component; 211. Positioning post; 212. Movable arm; 213. Support plate; 2131. Adjustment hole; 22. Support arm; 23. Mounting component; 24. Handle;

[0031] 3. Side positioning component; 31. Support column; 32. Baffle;

[0032] 4. Movable side stop; 41. Support component; 42. Movable component;

[0033] 5. Fixed side stop;

[0034] 6. Bottom stop;

[0035] 7. Surface positioning component; 71. Adsorption component;

[0036] 8. Base;

[0037] 9. Reinforcing components;

[0038] 10. Leveling components. Detailed Implementation

[0039] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0045] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] This embodiment provides a positioning fixture to solve the technical problems in the prior art, such as the inability to accurately and efficiently position the part to be installed and the low adaptability of the part to be installed.

[0047] like Figures 1-6 As shown, the positioning fixture includes a positioning frame 1, which has a frame structure. Multiple positioning arm assemblies 2 are provided on both sides of the positioning frame 1. The positioning arm assembly 2 includes a support arm 22 and a clamping member 21. The first end of the support arm 22 is rotatably mounted on the positioning frame 1 and the second end extends toward the other opposite side of the positioning frame 1. The clamping member 21 is mounted on the second end of the support arm 22 and is used to clamp the part to be installed.

[0048] Understandably, in order to facilitate subsequent operations on the component to be installed, it is necessary to place the component to be installed onto the frame-shaped positioning frame 1. Multiple positioning arm assemblies 2 are provided on both sides of the frame-shaped positioning frame 1. The support arms 22 of the positioning arm assemblies 2 on both sides extend towards each other. The support arms 22 are connected to clamping members 21 for clamping and fixing the clamping end of the component to be installed.

[0049] Generally, the parts to be installed are divided into a first part and a second part. The first and second parts need to be combined into one unit. However, when the first and second parts are combined for subsequent operations, relative movement is very likely to occur, which will affect the accuracy of subsequent operations. Therefore, in this embodiment, the support arm 22 is connected to a clamping member 21. The clamping member 21 is used to clamp and fix the clamping ends of the first and second parts, and fix them to prevent them from moving. In addition, the support arms 22 arranged in opposite directions can enable the clamping member 21 to fix the parts to be installed from two opposite directions at the same time, which improves the positioning reliability of the parts to be installed, and can cover different clamping parts of the parts to be installed, preventing stress concentration caused by uneven distribution of clamping positions, which could damage the parts to be installed. Furthermore, the support arm 22 is rotatably mounted on the positioning frame 1. When the parts to be installed are placed on the frame, the support arm 22 is pulled outward first, which can avoid interference between the support arm 22 and the parts to be installed, improving the structural rationality of the positioning fixture and its adaptability to different parts to be installed.

[0050] For example, when the first part is a frame and the second part is a corner piece, the corner piece needs to be attached to one side of the frame and fixed to the web of the frame. In this case, the frame can be placed on the frame first, then the corner piece can be placed in the preset position of the frame, and then the clamping member 21 can be used to clamp the corner piece to the web of the frame to complete the overall positioning.

[0051] like Figures 1 to 4 As shown, to optimize the load-bearing structure of the positioning arm assembly 2, optionally, a set of positioning arm assemblies 2 are provided on the upper and lower edges of the positioning frame 1, and each set of positioning arm assemblies 2 includes multiple positioning arm assemblies 2 spaced apart along the horizontal direction. By placing the positioning arm assemblies 2 on the upper and lower edges of the positioning frame 1, the support arm 22 can bear the load of the part to be installed along its own length, thereby preventing the support arm 22 from bending and affecting the positioning accuracy, extending the service life of the support arm 22, and also improving the reliability of the positioning frame 1.

[0052] like Figure 1 and Figure 2 As shown, the positioning fixture in this embodiment also has the function of positioning workpiece. Optionally, side blocks are provided on both the left and right opposite sides of the positioning frame 1, and at least one side block can move in the left and right direction so that the side blocks on both sides cooperate to clamp the workpiece.

[0053] Understandably, during the model development process of aircraft components, it is necessary to install the component to be added onto the component, and then perform tests or functional checks on the component. As described above in this embodiment, the component to be added is positioned by the positioning arm assembly 2 and the side positioning component 3, while the side stop blocks can position the component. The side stop blocks clamp the component to be added onto the positioning frame 1 from both sides, which avoids interference with the positioning arm assembly 2 and allows both the component to be added and the component to be added to be positioned on the positioning frame 1 simultaneously, facilitating the subsequent installation of the component to be added onto the component.

[0054] The workpiece is generally a panel, but it can also be other types of workpieces; there are no major restrictions here.

[0055] Optionally, the side stops on both sides of the positioning frame 1 are a movable side stop 4 and a fixed side stop 5, respectively. The movable side stop 4 can move left and right, while the fixed side stop 5 cannot move. The movable side stop 4 includes a support member 41 and a movable member 42. The support member 41 is disposed on the frame of the positioning frame 1, and the movable member 42 is slidably connected to the support member 41 and can abut against the workpiece. This arrangement enables the movable side stop 4 to move left and right through the support member 41 and the movable member 42, which facilitates positioning the workpiece from both sides and improves positioning efficiency. In addition, by adjusting the movable side stop 4, the horizontal position of the workpiece on the positioning frame 1 can be adjusted as needed, which facilitates the subsequent alignment of the part to be installed and the workpiece, enriching the functionality and operability of the positioning fixture.

[0056] In other embodiments, movable side blocks 4 can also be provided on both the left and right sides of the positioning frame 1 to further improve the clamping strength of the workpiece and the left and right adjustment range.

[0057] For example, along the left-right direction, one of the support member 41 and the movable member 42 is rotatably provided with a threaded rod, and the other is provided with a threaded hole. The threaded rod and the threaded hole cooperate with each other. The support member 41 is provided with a sliding groove along the left-right direction, and the movable member is provided with a slider, which cooperates with the sliding groove. This arrangement allows the movable member 42 to move along the sliding groove of the support member 41 by rotating the threaded rod in the threaded hole, thereby changing the relative distance between the support member 41 and the movable member 42, thus achieving the effect of left-right movement of the movable member 42. The structure is simple and the operation is stable, improving the reliability of the positioning fixture.

[0058] like Figure 3 and Figure 4 As shown, optionally, the positioning fixture also includes a bottom stop 6, which is disposed on the lower side of the positioning frame 1 to support the workpiece. This arrangement effectively supports the bottom of the workpiece, preventing the workpiece from sliding down due to insufficient clamping force of the side stop, thus improving the positioning accuracy of the positioning fixture.

[0059] To avoid interference between the bottom stop 6 and the positioning arm assembly 2 and the side positioning member 3, the bottom stop 6, the positioning arm assembly 2 and the side positioning member 3 may be alternately arranged on the lower side of the positioning frame.

[0060] Optionally, the positioning fixture also includes multiple surface positioning elements 7, which are installed across the upper and lower edges of the positioning frame 1. Each surface positioning element 7 can abut against one side of the workpiece, and the curvature of the surface positioning element 7 is consistent with that of the workpiece's side surface. This arrangement, by having the surface positioning elements 7 abut against the workpiece's side surface, further enhances the fixing strength of the workpiece and improves the reliability of the positioning fixture.

[0061] For example, the surface positioning element 7 is an arc-shaped plate structure. This arrangement reduces the obstruction of the surface positioning element 7 on the workpiece, facilitates the assembly of the workpiece and the parts to be assembled, and improves assembly efficiency.

[0062] Optionally, the surface positioning member 7 is provided with a plurality of suction members 71 spaced apart along its length, and the suction members 71 can be adsorbed onto the side of the workpiece. This arrangement further enhances the positioning strength of the workpiece by adsorbing the workpiece onto the surface positioning member 7 through the suction members 71. Exemplarily, the suction member 71 is a vacuum suction cup. In other embodiments, the suction member 71 may also be other structures, which is not the focus of this solution and will not be limited in detail here.

[0063] Optionally, the bottom of the positioning frame 1 is also provided with two bases 8 and two reinforcing members 9. The bases 8 are respectively located below the left and right sides of the positioning frame 1, and the reinforcing members 9 are respectively inclinedly connected between one side of the positioning frame 1 and the bases 8. This arrangement makes the positioning frame 1 more stable and less prone to tipping over, thus improving the reliability of the positioning fixture.

[0064] Optionally, multiple leveling components 10 are provided below the base 8 and below the bottom edge of the positioning frame 1. The leveling components 10 can extend and retract vertically. This arrangement allows the positioning fixture to be leveled by the extension and retraction of the leveling components 10 when it shakes, thereby adapting to uneven ground and improving the positioning fixture's adaptability to complex working conditions.

[0065] For example, the leveling component 10 can be an existing adjustable support structure, which is not the focus of this solution and will not be described in detail here.

[0066] To further enhance the positioning accuracy and fixing strength of the component to be installed, optionally, a set of side positioning members 3 is provided on the upper and lower edges of the positioning frame 1. Each set of side positioning members 3 includes multiple side positioning members 3 spaced apart along the horizontal direction. The upper and lower sets of side positioning members 3 cooperate to abut against the component to be installed. This arrangement, by having the side positioning members 3 abut against the upper and lower sides of the component to be installed, further prevents the component to be installed from falling or tipping over, improves the positioning accuracy and fixing strength of the component to be installed, and thus improves the reliability of the positioning fixture.

[0067] For example, the side positioning member 3 includes a support column 31 and a baffle 32. The support column 31 is disposed on the edge of the positioning frame 1, and the baffle 32 is disposed at the end of the support column 31 away from the edge of the positioning frame 1, and can abut against the side of the part to be installed. The baffle 32 has anti-slip protrusions on both sides perpendicular to the width direction of the part to be installed. This arrangement allows the side of the part to be installed to abut against the baffle 32, and the side is restricted by the anti-slip protrusions, which not only improves the positioning stability but also prevents the part to be installed from falling off the side positioning member 3, thereby improving operational safety.

[0068] To prevent the sides of the first and second parts from warping due to lack of clamping, optionally, a side clamp is provided at the end of some side positioning members 3 away from the frame of the positioning frame 1. The side clamp has two clamping parts that can move closer to or further away from each other to clamp the part to be installed. This arrangement clamps the sides of the part to be installed by the side clamp, preventing the sides of the first and second parts from warping and affecting subsequent processing operations, thus improving the positioning accuracy of the positioning fixture.

[0069] Optionally, the side positioning component 3 and the positioning arm assembly 2 are alternately arranged on the positioning frame 1 along the left-right direction. This arrangement can avoid interference between the side positioning component 3 and the positioning arm assembly 2, thereby improving the structural rationality of the positioning fixture.

[0070] like Figures 4 to 6As shown, optionally, the clamping member 21 includes a positioning post 211 and a movable arm 212. The positioning post 211 is used to insert and mate with a positioning hole on the part to be installed, and the movable arm 212 can move closer to or further away from the positioning post 211 to clamp the part to be installed. This configuration improves the positioning accuracy of the part to be installed by the engagement of the positioning post 211 with the positioning hole, and improves the ease of use and clamping strength by allowing the movable arm 212 to selectively abut against the positioning post 211.

[0071] For example, the clamping member 21 includes a support plate 213 and a quick-release clamp. The support plate 213 is disposed at the second end of the support arm 22, and the extension direction of the support plate 213 forms an angle with the extension direction of the support arm 22. The quick-release clamp is mounted on the support plate 213, which is connected to the second end of the support arm 22. The quick-release clamp is disposed on one side of the support plate 213 and has a movable arm 212. The support plate 213 is provided with a positioning post 211. When it is necessary to clamp and position the part to be installed, the positioning post 211 is aligned with the clamping end of the part to be installed, and the operating arm of the quick-release clamp is pulled, so that the movable arm 212 moves towards the support plate 213, thereby clamping the clamping end of the part to be installed. The quick-release clamp is a mature clamping structure in the prior art, which is not the focus of this solution and will not be described in detail here.

[0072] Optionally, the positioning fixture also includes a C-shaped clamp. After the clamping member 21 clamps the clamping end of the part to be installed, the C-shaped clamp is used to clamp the first part and the second part to assist in clamping and further improve the clamping strength.

[0073] Optionally, the support plate 213 is provided with multiple adjustment holes 2131 spaced apart along its length, and the base of the quick-gripper and the positioning post 211 are detachably installed in one of the adjustment holes 2131. This arrangement allows the clamping form to be changed by setting the quick-gripper and the positioning post 211 in different adjustment holes, thereby adapting to different parts to be installed and improving the overall adaptability of the positioning fixture.

[0074] To further improve the adaptability of the positioning fixture to the workpiece to be installed, the support arm 22 may optionally be extendable along its own length. This feature can improve the coverage of the positioning arm assembly 2 for different clamping positions, thereby improving the adaptability of the positioning fixture to the workpiece to be installed.

[0075] For example, the support arm 22 has a telescopic sleeve structure, and the telescopic movement of the support arm 22 is achieved by the relative movement of different sleeves. Of course, in other embodiments, the support arm 22 may also have other telescopic structures, which is not the focus of this solution and will not be described in detail here.

[0076] To enable the rotation of the support arm 22, exemplarily, a mounting member 23 is provided at the first end of the support arm 22, and a mounting seat is provided on the positioning frame 1. Both the mounting member 23 and the mounting seat have through holes. The positioning arm assembly 2 also includes a rotating shaft that passes through the through holes on the mounting member 23 and the mounting seat to rotatably connect the mounting member 23 and the mounting seat. This arrangement improves the smoothness of the rotation of the support arm 22, thereby improving the structural rationality of the positioning fixture.

[0077] Optionally, the mounting component 23 is provided with a first fixing hole, and the mounting base is provided with a second positioning hole. At least one of the first fixing hole and the second positioning hole is provided in multiple locations. The positioning arm assembly 2 includes multiple locking members, which pass through the aligned first fixing hole and second fixing hole to lock the mounting component 23 and the mounting base. This arrangement improves the strength of the support arm 22 locked onto the positioning frame 1 and prevents the support arm 22 from rotating after locking, thus affecting the positioning accuracy of the part to be installed.

[0078] For example, the mounting member 23 is plate-shaped and its length direction is consistent with the length direction of the support arm 22. The bottom of the mounting member 23 is provided with a through hole for rotatable connection with the mounting base. The mounting member 23 is provided with a plurality of fixing holes at intervals above the through hole for locking the mounting member 23 to the mounting base.

[0079] Optionally, a handle 24 is also provided on the support arm 22. This feature improves the operability of the positioning arm assembly 2, making the support arm 22 easier to grip, thereby enhancing the ease of operation of the fixing fixture.

[0080] The working principle of the positioning fixture in this embodiment is as follows:

[0081] Place the lower side of the workpiece against the bottom stop 6, then flip the workpiece up to the side against the surface positioning part 7, and move the side stop until the workpiece is clamped.

[0082] The adsorption component 71 is activated to firmly adsorb the workpiece onto the surface positioning component 7;

[0083] Place the part to be installed on the shelf, so that the side positioning part 3 abuts against the upper and lower sides of the part to be installed, and rotate the support arm 22 so that the clamping part 21 clamps the clamping end of the part to be installed.

[0084] Use a C-clamp to clamp the first and second parts to be installed, and use a side clamp to clamp the side of the part to be installed.

[0085] Holes are drilled in the space between the positioning elements 7 to make holes in the workpiece and the part to be installed, and the part to be installed is then attached to the workpiece to complete the assembly.

[0086] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A positioning fixture, comprising a positioning frame (1), characterized in that, The positioning frame (1) has a frame-like structure. Multiple positioning arm assemblies (2) are provided on both sides of the positioning frame (1). The positioning arm assembly (2) includes a support arm (22) and a clamping member (21). The first end of the support arm (22) is rotatably mounted on the positioning frame (1) and the second end extends toward the other opposite side of the positioning frame (1). The clamping member (21) is mounted on the second end of the support arm (22) and is used to clamp the part to be installed.

2. The positioning fixture according to claim 1, characterized in that, The clamping member (21) includes a positioning post (211) and a movable arm (212). The positioning post (211) is used to insert into a positioning hole on the part to be installed, and the movable arm (212) can move closer to or further away from the positioning post (211) to clamp the part to be installed.

3. The positioning fixture according to claim 2, characterized in that, The clamping member (21) includes a support plate (213), which is disposed at the second end of the support arm (22), and the extension direction of the support plate (213) is set at an angle to the extension direction of the support arm (22). The positioning post (211) and the movable arm (212) are disposed on the support plate (213).

4. The positioning fixture according to claim 1, characterized in that, The support arm (22) is capable of extending and retracting along its own length.

5. The positioning fixture according to claim 1, characterized in that, The first end of the support arm (22) is provided with a mounting part (23), the positioning frame (1) is provided with a mounting seat, both the mounting part (23) and the mounting seat are provided with through holes, the positioning arm assembly (2) also includes a rotating shaft, the rotating shaft passes through the through holes on the mounting part (23) and the mounting seat to make the mounting part (23) and the mounting seat rotatably connected.

6. The positioning fixture according to claim 5, characterized in that, The mounting component (23) is provided with a first fixing hole, and the mounting base is provided with a second positioning hole. At least one of the first fixing hole and the second positioning hole is provided in multiples. The positioning arm assembly (2) includes a locking member, which passes through the aligned first fixing hole and the second fixing hole to lock the mounting component (23) and the mounting base.

7. The positioning fixture according to any one of claims 1-6, characterized in that, The positioning frame (1) has a set of positioning arm assemblies (2) on its upper and lower edges respectively. Each set of positioning arm assemblies (2) includes multiple positioning arm assemblies (2) spaced apart in the horizontal direction.

8. The positioning fixture according to claim 7, characterized in that, The positioning frame (1) has a set of side positioning components (3) on its upper and lower edges respectively. Each set of side positioning components (3) includes multiple side positioning components (3) spaced apart along the horizontal direction. The upper and lower sets of side positioning components (3) cooperate to abut against the component to be installed.

9. The positioning fixture according to claim 8, characterized in that, The side positioning member (3) is provided with a side clamp at one end away from the frame of the positioning frame (1). The side clamp has two clamping parts that can move closer to or further away from each other to clamp the part to be installed.

10. The positioning fixture according to claim 7, characterized in that, The positioning frame (1) is provided with side blocks on both the left and right sides, and at least one side block can move in the left and right direction so that the side blocks on both sides cooperate to clamp the workpiece. And / or, the positioning fixture further includes a bottom stop (6), which is disposed on the lower side of the positioning frame (1) to support the workpiece; And / or, the positioning fixture further includes a plurality of surface positioning elements (7), which span the upper and lower edges of the positioning frame (1), and can abut against one side of the workpiece, and the surface positioning elements (7) have the same curvature as the side of the workpiece.

11. The positioning fixture according to claim 10, characterized in that, The surface positioning member (7) is provided with a plurality of adsorption members (71) spaced apart along its own length direction, and the adsorption members (71) can adsorb onto the side of the workpiece.

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