Positioning jig

Abstract

A positioning jig comprises a reference assembly which comprises a base and a reference piece connected with the base, the reference piece is provided with a positioning groove, and the positioning groove is provided with a first positioning face, a second positioning face and a third positioning face which are connected in the first direction, the second direction and the third direction respectively; the first positioning assembly comprises a flexible positioning part and a pushing part, the flexible positioning part is arranged opposite to the first positioning surface and is in sliding connection with the base, and the pushing part is connected with the base and abuts against the inclined surface of the flexible positioning part; the second positioning assembly is arranged opposite to the second positioning surface and is connected with the base; and the third positioning assembly is arranged opposite to the third positioning surface and is connected with the base. According to the positioning jig, the first positioning assembly, the second positioning assembly and the third positioning assembly sequentially abut against the workpieces to the corresponding positioning faces, so that the peripheral sides of the workpieces are sequentially positioned to the first positioning face, the second positioning face and the third positioning face, the workpieces are stably positioned into the positioning grooves, and the positioning precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to a positioning fixture. Background Art

[0002] Nowadays, people have higher and higher requirements for product precision, especially electronic equipment. During the product processing, positioning fixtures are used to position the product, so that the processing equipment can accurately process the product.

[0003] At present, when positioning fixtures are used to position products with special-shaped structures, such as earphone shells, multiple positioning parts are generally arranged at intervals along the extension direction of the special-shaped structure, and multiple cylinders drive the corresponding positioning parts to move synchronously toward the reference part to position the product to the reference part. However, when multiple cylinders operate at the same time, their synchronization is poor, resulting in some positioning parts contacting the product while other positioning parts have not yet contacted the product, causing the product to deflect in the positioning fixture under the push of the positioning parts and detach from the positioning fixture, thereby reducing the positioning accuracy. Utility Model Content

[0004] In view of the above situation, it is necessary to provide a positioning fixture to improve the positioning accuracy.

[0005] The embodiment of the present application provides a positioning fixture for positioning a workpiece, the positioning fixture comprising: a reference component, comprising a base and a reference member connected to the base, the reference member being provided with a positioning groove, the positioning groove being provided with a first positioning surface, a second positioning surface and a third positioning surface connected in a first direction, a second direction and a third direction, respectively, and the first direction, the second direction and the third direction are perpendicular to each other; a first positioning component, comprising a flexible positioning component and a push component, the flexible positioning component being arranged opposite to the first positioning surface and being slidably connected to the base, the push component being connected to the base and abutting against the inclined surface of the flexible positioning component, the push component being used to drive the flexible positioning component to move along the first direction so that the flexible positioning component flexibly pushes and positions the workpiece to the first positioning surface; a second positioning component being arranged opposite to the second positioning surface and connected to the base, the second positioning component being used to push and position the workpiece to the second positioning surface; and a third positioning component being arranged opposite to the third positioning surface and connected to the base, the third positioning component being used to push and position the workpiece to the third positioning surface.

[0006] When the above-mentioned positioning fixture is used, the pushing member in the first positioning component is first used to drive the flexible positioning member to flexibly push and position the workpiece to the first positioning surface, so that the workpiece maintains a preset orientation and placement position in the positioning groove, and then the second positioning component is used to push the workpiece to the second positioning surface, and finally the third positioning component pushes the workpiece to the third positioning surface. In this way, the first positioning component, the second positioning component and the third positioning component push the workpiece to the corresponding positioning surfaces in turn, so that the circumferential side of the workpiece can be positioned to the first positioning surface, the second positioning surface and the third positioning surface in turn, so that the workpiece always maintains a preset orientation and placement position in the positioning groove, thereby realizing stable positioning of the workpiece in the positioning groove, avoiding the workpiece from swinging out of the positioning groove due to the synchronous pushing operation of multiple positioning members, and improving the positioning accuracy.

[0007] In some embodiments, a receiving groove is provided on the side of the base facing the flexible positioning member, and the flexible positioning member includes: a first positioning portion, which is arranged opposite to the first positioning surface along the first direction and abuts against the inclined surface of the pushing member, and the first positioning portion is provided with an installation groove on the side facing the base, and the first positioning portion is used to push the workpiece along the first direction under the drive of the pushing member; an elastic portion, the two ends of the elastic portion elastically abut against the bottom of the installation groove and the bottom of the receiving groove respectively, and the elastic portion is used to drive the first positioning portion to reset.

[0008] In some embodiments, the first positioning assembly further includes: a guide member connected to the base and provided with a guide groove along the first direction, wherein the guide groove receives the first positioning portion to guide the first positioning portion.

[0009] In some embodiments, the pushing member includes: a pushing driving part connected to the base; a pushing part connected to the pushing driving part and the pushing part is provided with a pushing inclined surface, the pushing inclined surface abuts against the flexible positioning member, and the pushing part is used to push the flexible positioning member through the pushing inclined surface under the drive of the pushing driving part.

[0010] In some embodiments, the reference member is provided with a connecting hole along the second direction, the connecting hole passes through the opposite sides of the reference member and is arranged opposite to the second positioning surface; the second positioning assembly includes a second positioning member and a positioning driving member arranged on the base, the second positioning member is movably passed through the connecting hole and connected to the positioning driving member, and the positioning driving member is used to drive the second positioning member to move close to the second positioning surface under the guidance of the connecting hole.

[0011] In some embodiments, the third positioning assembly includes: a pressing driving member, which is arranged on the base at a distance from the reference member; a third positioning member, which is arranged opposite to the third positioning surface and connected to the pressing driving member, and the third positioning member is provided with limiting holes passing through the opposite sides of the third positioning member, and the third positioning member is used to rotate to the top of the third positioning surface under the drive of the pressing driving member, and press the workpiece to the third positioning surface along the third direction; and a limiting member, which is arranged between the reference member and the pressing driving member and connected to the base, and the limiting member is used to be inserted into the limiting hole when the third positioning member rotates to the top of the third positioning surface to limit the third positioning member.

[0012] In some embodiments, the positioning fixture also includes a fourth positioning component, and the fourth positioning component includes: a fourth positioning member, which is penetrated through the base along the third direction and extends out of the third positioning surface, and the fourth positioning member is provided with a positioning inclined surface adapted to the workpiece at one end facing the third positioning component; an elastic member, and the opposite ends of the elastic member elastically support the fourth positioning member and the base respectively, and the elastic member is used to drive the fourth positioning member to move along the third direction so that the positioning inclined surface pushes the workpiece to the second positioning surface.

[0013] In some embodiments, the base is provided with a receiving groove for accommodating the elastic member, and the fourth positioning member includes a positioning rod and a protrusion connected to each other, one end of the positioning rod penetrates into the receiving groove and abuts against the bottom of the groove at the opposite ends of the elastic member respectively, the other end of the positioning rod extends out of the third positioning surface and is provided with the positioning inclined surface, the protrusion is located in the receiving groove and protrudes from the peripheral side of the positioning rod, and the protrusion is used to limit the positioning rod.

[0014] In some embodiments, the positioning fixture further includes: a rotating member, the rotating member is connected to the side wall of the base, and the rotating member is used to drive the base to rotate a preset angle.

[0015] In some embodiments, both the first positioning assembly and the reference member are provided with avoidance grooves, and the avoidance grooves are used to avoid external processed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a positioning fixture and a workpiece adapted thereto provided in an embodiment of the present application.

[0017] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the positioning fixture shown in another angle.

[0018] Figure 3 for Figure 2The shown schematic diagram is a partial enlargement of the positioning fixture at position III.

[0019] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the reference component, the first positioning component and the fourth positioning component in the positioning fixture is shown.

[0020] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the first positioning component in the positioning fixture is shown.

[0021] Figure 6 for Figure 4 A schematic cross-sectional view of the reference component and the fourth positioning component in the positioning fixture along the VI-VI direction is shown.

[0022] Main component symbols

[0023] Positioning fixture 100

[0024] Benchmark Components 10

[0025] Base 11

[0026] Storage slot 111

[0027] Positioning station 112

[0028] Accommodating groove 113

[0029] Reference piece 12

[0030] Positioning slot 121

[0031] First positioning surface 122

[0032] Second positioning surface 123

[0033] The third positioning surface 124

[0034] Connection hole 125

[0035] The first positioning component 20

[0036] Flexible positioning piece 21

[0037] First positioning portion 211

[0038] Installation slot 2111

[0039] Elastic portion 212

[0040] Push member 22

[0041] Pushing driving unit 221

[0042] Pushing portion 222

[0043] Push slope 2221

[0044] Guide 23

[0045] Guide groove 231

[0046] Avoidance slot 24

[0047] Covering member 25

[0048] The second positioning component 30

[0049] The second positioning member 31

[0050] Positioning drive 32

[0051] The third positioning component 40

[0052] Pressing driving member 41

[0053] The third positioning member 42

[0054] Limit hole 421

[0055] Limiting piece 43

[0056] Fourth positioning component 50

[0057] Fourth positioning member 51

[0058] Positioning slope 511

[0059] Positioning rod 512

[0060] Raised portion 513

[0061] Elastic member 52

[0062] Rotating member 60

[0063] Workpiece 200 DETAILED DESCRIPTION

[0064] In order to more clearly understand the purpose, features and advantages of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present application, and the embodiments described are only a part of the embodiments of the present application, rather than all of the embodiments.

[0065] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0066] See also Figure 1The present application embodiment provides a positioning fixture 100, which includes a reference component 10, a first positioning component 20, a second positioning component 30 and a third positioning component 40. The positioning fixture 100 is used to position a workpiece 200. The workpiece 200 may be an earphone shell, a mobile phone mid-plate, etc. It can be understood that Figure 1 A Cartesian three-dimensional coordinate system is established in the first direction, where the first direction is the movement direction of the first positioning component 20, that is, Figure 1 The X-axis direction is shown, and the second direction is the movement direction of the second positioning assembly 30, that is, Figure 1 The Y-axis direction shown in FIG. 1 is the movement direction of the third positioning assembly 40, that is, Figure 1 The Z-axis direction is shown.

[0067] See also Figure 1 , Figure 2 and Figure 3 The reference component 10 includes a base 11 and a reference member 12 connected to the base 11. The reference member 12 is provided with a positioning groove 121. The positioning groove 121 is provided with a first positioning surface 122, a second positioning surface 123 and a third positioning surface 124 connected along the first direction, the second direction and the third direction, respectively, and the first direction, the second direction and the third direction are perpendicular to each other. The first positioning component 20 includes a flexible positioning component 21 and a push member 22. The flexible positioning component 21 is arranged opposite to the first positioning surface 122 and is slidably connected to the base 11. The push member 22 is connected to the base 11 and abuts against the inclined surface of the flexible positioning component 21. The push member 22 is used to drive the flexible positioning component 21 to move along the first direction, so that the flexible positioning component 21 flexibly pushes and positions the workpiece 200 to the first positioning surface 122. The second positioning component 30 is arranged opposite to the second positioning surface 123 and is connected to the base 11. The second positioning component 30 is used to push and position the workpiece 200 to the second positioning surface 123. The third positioning assembly 40 is disposed opposite to the third positioning surface 124 and connected to the base 11 . The third positioning assembly 40 is used to push and position the workpiece 200 to the third positioning surface 124 .

[0068] When the above-mentioned positioning fixture 100 is used, the push member 22 in the first positioning component 20 drives the flexible positioning component 21 to flexibly push and position the workpiece 200 to the first positioning surface 122, so that the workpiece 200 maintains a preset orientation and placement position in the positioning groove 121, and then the second positioning component 30 pushes the workpiece 200 to the second positioning surface 123, and finally the third positioning component 40 pushes the workpiece 200 to the third positioning surface 124. In this way, the first positioning component 20, the second positioning component 30 and the third positioning component 40 push the workpiece 200 to the corresponding positioning surfaces in turn, so that the peripheral side of the workpiece 200 can be positioned to the first positioning surface 122, the second positioning surface 123 and the third positioning surface 124 in turn, so that the workpiece 200 always maintains a preset orientation and placement position in the positioning groove 121, and the workpiece 200 is stably positioned in the positioning groove 121, avoiding the workpiece 200 from swinging out of the positioning groove 121 when multiple positioning components are pushed synchronously, thereby improving the positioning accuracy.

[0069] It can be understood that, due to the excessive driving force provided by the push member 22, when the third positioning assembly 40 pushes the workpiece 200, the push member 22 cancels the driving force of the flexible positioning member 21 to move close to the first positioning surface 122, so that the flexible positioning member 21 is away from the first positioning surface 122 by a preset distance and forms a preset spacing with the positioned workpiece 200, so that the third positioning assembly 40 can stably push the workpiece 200 along the third direction to move close to the third positioning surface 124, and the push member 22 drives the flexible positioning member 21 to move close to the first positioning surface 122 after the third positioning assembly 40 completes the positioning operation, so that the flexible positioning member 21 pushes the workpiece 200 to the first positioning surface 122. When the flexible positioning member 21 forms a preset spacing with the workpiece 200, the workpiece 200 still maintains its preset orientation and placement position under the positioning of the second positioning assembly 30.

[0070] In this embodiment, the groove wall corresponding to the first positioning surface 122 in the positioning groove 121 is adapted to the workpiece 200. When the workpiece 200 is placed in the positioning groove 121 by a robot or an operator, the groove wall corresponding to the first positioning surface 122 in the positioning groove 121 can be abutted against the workpiece 200, so as to perform preliminary positioning of the workpiece 200 and prevent the workpiece 200 from significantly deflecting or shaking in the positioning groove 121, thereby facilitating subsequent positioning operations of the first positioning assembly 20, the second positioning assembly 30 and the third positioning assembly 40.

[0071] See also Figure 4 and Figure 5In some embodiments, a receiving groove 111 is provided on a side of the base 11 facing the flexible positioning member 21, and the flexible positioning member 21 includes a first positioning portion 211 and an elastic portion 212. The first positioning portion 211 is arranged opposite to the first positioning surface 122 along the first direction and abuts against the inclined surface of the push member 22. A mounting groove 2111 is provided on a side of the first positioning portion 211 facing the base 11, and the first positioning portion 211 is used to push the workpiece 200 along the first direction under the drive of the push member 22. The two ends of the elastic portion 212 elastically abut the bottom of the mounting groove 2111 and the bottom of the receiving groove 111, respectively, and the elastic portion 212 is used to drive the first positioning portion 211 to reset. In this embodiment, the elastic portion 212 can be a spring.

[0072] Thus, by setting the specific structure of the above-mentioned flexible positioning member 21, the first positioning portion 211 can move close to the first positioning surface 122 along the first direction under the push of the push member 22, and compress the elastic portion 212 to the bottom of the receiving groove 111, so that the first positioning portion 211 forms a flexible contact with the workpiece 200, avoiding the workpiece 200 from being damaged by excessive pressure, and at the same time achieving the function of positioning the workpiece 200 to the first positioning surface 122. In addition, by setting the receiving groove 111 and the mounting groove 2111 to cooperate with each other to accommodate the elastic portion 212, the elastic portion 212 can be limited, so that the elastic portion 212 always provides elastic force along the first direction, and the stability of the elastic force provided by the elastic portion 212 is improved.

[0073] See also Figure 4 In some embodiments, the first positioning assembly 20 further includes a guide member 23 , which is connected to the base 11 and is provided with a guide groove 231 along the first direction, and the guide groove 231 receives the first positioning portion 211 to guide the first positioning portion 211 .

[0074] In this way, by setting the above-mentioned guide member 23, the guide groove 231 can accommodate the first positioning portion 211 that moves along the first direction, so that the first positioning portion 211 always moves along the first direction close to the first positioning surface 122 under the guidance of the guide member 23, thereby avoiding misalignment between the first positioning portion 211 and the workpiece 200 and the first positioning surface 122, thereby improving the positioning stability of the first positioning component 20.

[0075] See also Figure 5 In some embodiments, the first positioning component 20 and the reference member 12 are both provided with a position-avoiding groove 24, and the position-avoiding groove 24 is used to avoid the external processing member 200. In this embodiment, the external processing member 200 can be a milling cutter in a processing machine.

[0076] Thus, by providing the avoidance groove 24 , when the external processing part 200 processes the positioned workpiece 200 , the avoidance groove 24 can avoid the external processing part 200 , thereby preventing the first positioning component 20 and the reference part 12 from interfering with the processing operation of the external processing part 200 .

[0077] It can be understood that the number and position of the avoidance grooves 24 can be adaptively set according to the preset processing position of the workpiece 200. In this embodiment, the first positioning surface 122, the second positioning surface 123 and the end of the first positioning portion 211 away from the push member 22 are all provided with avoidance grooves 24.

[0078] See also Figure 4 In some embodiments, the first positioning assembly 20 further includes a covering member 25 , which covers the guide groove 231 and is connected to the guide member 23 .

[0079] In this way, by setting the above-mentioned cover member 25, the cover member 25 can be made to abut against the first positioning portion 211 along the third direction to limit the first positioning portion 211, thereby preventing the first positioning portion 211 from swinging when driven by the elastic force of the elastic portion 212 or the pushing drive of the pushing member 22, so that the first positioning portion 211 always moves along the first direction, which is beneficial for the first positioning assembly 20 to stably position the workpiece 200.

[0080] See also Figure 1 , Figure 2 and Figure 4 In some embodiments, a plurality of positioning jigs 100 share the same base 11 , and the base 11 is further provided with a plurality of positioning stations 112 , and the plurality of positioning jigs 100 are respectively provided at corresponding positioning stations 112 .

[0081] In this way, by arranging multiple positioning jigs 100 at corresponding positioning stations 112 , multiple positioning jigs 100 can simultaneously perform positioning operations on multiple workpieces 200 , without having to perform positioning operations on multiple workpieces 200 one by one, thereby improving the positioning efficiency of the positioning jigs 100 .

[0082] See also Figure 5 In some embodiments, the push member 22 includes a push driving portion 221 and a push portion 222. The push driving portion 221 is connected to the base 11, and the push portion 222 is connected to the push driving portion 221. The push inclined surfaces 2221 are provided at opposite ends of the push portion 222. The push portion 222 drives the two push inclined surfaces 2221 to push the two flexible positioning members 21 synchronously. In this embodiment, the push driving portion 221 can be a cylinder. In other embodiments, the push portion 222 can also be provided with only one push inclined surface 2221 for pushing one flexible positioning member 21.

[0083] In this way, by setting the specific structure of the pushing member 22, the pushing portion 222 can synchronously push the two flexible positioning members 21 through the two pushing inclined surfaces 2221 under the drive of the pushing driving portion 221, thereby simplifying the mechanical structure of the first positioning component 20, avoiding the first positioning component 20 from occupying too large an installation space, and reducing the use cost of the positioning fixture 100.

[0084] See also Figure 1 and Figure 4 In some embodiments, the reference member 12 is provided with a connection hole 125 along the second direction, the connection hole 125 passes through the two opposite sides of the reference member 12 and is arranged opposite to the second positioning surface 123. The second positioning assembly 30 includes a second positioning member 31 and a positioning driving member 32 arranged on the base 11, the second positioning member 31 is movably arranged through the connection hole 125 and connected to the positioning driving member 32, and the positioning driving member 32 is used to drive the second positioning member 31 to move close to the second positioning surface 123 under the guidance of the connection hole 125. In this embodiment, the positioning driving member 32 can be a cylinder.

[0085] In this way, by setting the above-mentioned connecting hole 125 and the specific structure of the second positioning component 30, the positioning driving member 32 can drive the second positioning member 31 to move accurately close to the second positioning surface 123 under the guidance of the connecting hole 125, so that the second positioning member 31 can accurately push the workpiece 200 to the second positioning surface 123, thereby improving the positioning accuracy of the second positioning component 30.

[0086] See also Figure 1 In some embodiments, the third positioning assembly 40 includes a pressing driving member 41, a third positioning member 42 and a limiting member 43. The pressing driving member 41 is arranged on the base 11 at a distance from the reference member 12. The third positioning member 42 is arranged opposite to the third positioning surface 124 and connected to the pressing driving member 41, and the third positioning member 42 is provided with limiting holes 421 that penetrate the opposite sides of the third positioning member 42. The third positioning member 42 is used to rotate to the top of the third positioning surface 124 under the drive of the pressing driving member 41, and press the workpiece 200 to the third positioning surface 124 along the third direction. The limiting member 43 is arranged between the reference member 12 and the pressing driving member 41 and connected to the base 11. The limiting member 43 is used to insert the limiting hole 421 when the third positioning member 42 rotates to the top of the third positioning surface 124 to limit the third positioning member 42. In this embodiment, the pressing driving member 41 can be a rotary telescopic cylinder.

[0087] In this way, by setting the specific structure of the above-mentioned third positioning component 40, when the pressing driving member 41 drives the third positioning member 42 to rotate to above the third positioning surface 124, the limiting member 43 can be inserted into the limiting hole 421 opened by the third positioning member 42, so that the limiting member 43 and the limiting hole 421 cooperate with each other to limit the movement direction of the third positioning member 42, and then the third positioning member 42 can accurately press the workpiece 200 to move along the third direction to the third positioning surface 124, which is beneficial to improve the positioning accuracy of the third positioning component 40.

[0088] See also Figure 4 and Figure 6 In some embodiments, the positioning fixture 100 further includes a fourth positioning assembly 50, and the fourth positioning assembly 50 includes a fourth positioning member 51 and an elastic member 52. The fourth positioning member 51 is arranged in the third direction through the base 11 and extends out of the third positioning surface 124, and one end of the fourth positioning member 51 facing the third positioning assembly 40 is provided with a positioning inclined surface 511 adapted to the workpiece 200. The opposite ends of the elastic member 52 elastically support the fourth positioning member 51 and the base 11 respectively, and the elastic member 52 is used to drive the fourth positioning member 51 to move along the third direction so that the positioning inclined surface 511 pushes the workpiece 200 to the second positioning surface 123. In this embodiment, the elastic member 52 can be a spring. It can be understood that the positioning inclined surface 511 is adapted to the workpiece 200, and the positioning inclined surface 511 can be a plane or a curved surface. In this embodiment, the positioning inclined surface 511 is a positioning curved surface.

[0089] In this way, by setting the specific structure of the above-mentioned fourth positioning component 50, when the workpiece 200 is placed in the positioning groove 121 or the third positioning component 42 presses the workpiece 200 close to the third positioning surface 124, the fourth positioning component 51 can be driven by the elastic component 52 to elastically support the workpiece 200 through the positioning inclined surface 511, so that the workpiece 200 is in contact with the second positioning surface 123, thereby ensuring that the workpiece 200 maintains a preset orientation in the positioning groove 121, avoiding the workpiece 200 from shaking during the positioning process, and facilitating other positioning components to accurately push the preset area of ​​the workpiece 200 to the corresponding positioning surface, thereby improving the positioning accuracy; in addition, the fourth positioning component 51 also forms a flexible contact with the workpiece 200 under the action of the elastic component 52, preventing the workpiece 200 from being damaged during the positioning process, which is beneficial to improving the quality of the workpiece 200.

[0090] See also Figure 6The base 11 is provided with a receiving groove 113 for accommodating the elastic member 52. The fourth positioning member 51 includes a positioning rod 512 and a protrusion 513 connected to each other. One end of the positioning rod 512 penetrates into the receiving groove 113 and abuts against the bottom of the receiving groove 113 at the opposite ends of the elastic member 52 respectively. The other end of the positioning rod 512 extends out of the second positioning surface 123 and is provided with a positioning inclined surface 511. The protrusion 513 is located in the receiving groove 113 and protrudes from the peripheral side of the positioning rod 512. The protrusion 513 is used to limit the positioning rod 512.

[0091] In this way, by setting the specific structure of the above-mentioned receiving groove 113 and the fourth positioning member 51, when the positioning rod 512 moves toward the workpiece 200 placed in the positioning groove 121 under the drive of the elastic member 52, the protrusion 513 abuts against the bottom of the groove 113 adjacent to the second positioning surface 123, so that the protrusion 513 limits the movement distance of the positioning rod 512 and prevents the fourth positioning member 51 from detaching from the base 11.

[0092] See also Figure 1 In some embodiments, the positioning fixture 100 further includes a rotating member 60, which is connected to the side wall of the base 11 and is used to drive the base 11 to rotate by a preset angle. In this embodiment, the rotating member 60 can be a flange connected to a rotating cylinder.

[0093] Thus, by providing the above-mentioned rotating member 60 , the rotating member 60 can drive the base 11 to drive the positioned workpiece 200 to rotate by a preset angle, so that the external processing member 200 can process multiple preset processing areas of the workpiece 200 .

[0094] The working process of the positioning fixture 100 is roughly as follows:

[0095] First, the manipulator or the operator places the workpiece 200 in the positioning groove 121, and the push driving part 221 drives the push part 222 to push the first positioning part 211 through the push inclined surface 2221, so that the first positioning part 211 moves along the first direction and pushes the workpiece 200 under the drive of the push part 222, and the elastic part 212 is compressed to the bottom of the receiving groove 111 by the first positioning part 211, and at the same time, the elastic member 52 drives the fourth positioning member 51 to push the lower surface of the workpiece 200 through the positioning inclined surface 511, and the workpiece 200 is positioned to the first positioning surface 122 under the joint action of the positioning inclined surface 511 and the first positioning part 211, so that the workpiece 200 maintains the preset direction and placement position in the positioning groove 121;

[0096] Then, the positioning driving member 32 drives the second positioning member 31 to move close to the second positioning surface 123 under the guidance of the connecting hole 125, so that the second positioning member 31 pushes the workpiece 200 to the second positioning surface 123;

[0097] Next, the push portion 222 is separated from the first positioning portion 211 under the driving of the push driving portion 221, and the compressed elastic portion 212 provides elastic force to drive the first positioning portion 211 and the workpiece 200 to form a preset distance, and the push driving member 41 drives the third positioning member 42 to rotate to above the third positioning surface 124, and the limiting member 43 is inserted into the limiting hole 421 to limit the third positioning member 42 when the third positioning member 42 rotates to above the third positioning surface 124, and the push driving member 41 drives the third positioning member 42 to move close to the third positioning surface 124 under the limitation of the limiting member 43, so that the workpiece 200 is positioned to the third positioning surface 124 by the third positioning member 42;

[0098] Finally, the pushing driving part drives the pushing part 222 to push the first positioning part 211 through the pushing inclined surface 2221, so that the first positioning part 211 moves along the first direction under the drive of the pushing part 222 to push the workpiece 200, and positions the workpiece 200 to the first positioning surface 122 again, so that the peripheral side of the workpiece 200 is positioned to the first positioning surface 122, the second positioning surface 123 and the third positioning surface 124 in sequence, so that the workpiece 200 always maintains a preset orientation and placement position in the positioning groove 121, and stably positions the workpiece 200 in the positioning groove 121, and avoids the workpiece 200 from being deflected and separated from the positioning groove 121 when multiple positioning parts push synchronously, thereby improving the positioning accuracy. After the rotating part 60 completes processing in one of the preset areas of the workpiece 200, it drives the base 11 to drive the positioned workpiece 200 to rotate the preset angle, so that the external processing part 200 processes other preset areas of the workpiece 200.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A positioning fixture for positioning a workpiece, characterized in that: The positioning fixture includes: A reference assembly comprises a base and a reference member connected to the base, wherein the reference member is provided with a positioning groove, wherein the positioning groove is provided with a first positioning surface, a second positioning surface and a third positioning surface connected in a first direction, a second direction and a third direction respectively, and the first direction, the second direction and the third direction are perpendicular to each other; A first positioning assembly includes a flexible positioning member and a push member, wherein the flexible positioning member is arranged opposite to the first positioning surface and is slidably connected to the base, the push member is connected to the base and abuts against the inclined surface of the flexible positioning member, and the push member is used to drive the flexible positioning member to move along the first direction so that the flexible positioning member flexibly pushes and positions the workpiece to the first positioning surface; A second positioning assembly, disposed opposite to the second positioning surface and connected to the base, the second positioning assembly being used to push and position the workpiece to the second positioning surface; and A third positioning assembly is disposed opposite to the third positioning surface and connected to the base, and the third positioning assembly is used to push and position the workpiece to the third positioning surface.

2. The positioning fixture according to claim 1, characterized in that: The base is provided with a receiving groove on one side facing the flexible positioning member, and the flexible positioning member includes: A first positioning portion, arranged along the first direction opposite to the first positioning surface and abutting against the inclined surface of the push member, a mounting groove is provided on a side of the first positioning portion facing the base, and the first positioning portion is used to push the workpiece along the first direction under the drive of the push member; The elastic part has two ends elastically abutting against the groove bottom of the installation groove and the groove bottom of the receiving groove respectively, and the elastic part is used to drive the first positioning part to reset.

3. The positioning fixture according to claim 2, characterized in that: The first positioning component also includes: A guide member is connected to the base and is provided with a guide groove along the first direction, wherein the guide groove receives the first positioning portion to guide the first positioning portion.

4. The positioning fixture according to claim 1, characterized in that: The push member comprises: A push driving part connected to the base; The push portion is connected to the push driving portion and is provided with a push inclined surface, the push inclined surface abuts against the flexible positioning member, and the push portion is used to push the flexible positioning member through the push inclined surface under the drive of the push driving portion.

5. The positioning fixture according to claim 1, characterized in that: The reference member is provided with a connecting hole along the second direction, the connecting hole passes through two opposite sides of the reference member and is arranged opposite to the second positioning surface; The second positioning assembly includes a second positioning member and a positioning driving member arranged on the base, the second positioning member is movably passed through the connecting hole and connected to the positioning driving member, and the positioning driving member is used to drive the second positioning member to move close to the second positioning surface under the guidance of the connecting hole.

6. The positioning fixture according to claim 1, characterized in that: The third positioning component comprises: A pressing driving member, arranged on the base at a distance from the reference member; a third positioning member, arranged opposite to the third positioning surface and connected to the pressing driving member, and the third positioning member is provided with limiting holes penetrating through two opposite sides of the third positioning member, and the third positioning member is used to rotate to the top of the third positioning surface under the drive of the pressing driving member, and press the workpiece to the third positioning surface along the third direction; and A limiting member is disposed between the reference member and the pressing driving member and connected to the base, and is used for inserting into the limiting hole when the third positioning member rotates to above the third positioning surface to limit the third positioning member.

7. The positioning fixture according to claim 1, characterized in that: The positioning fixture further includes a fourth positioning component, and the fourth positioning component includes: a fourth positioning member, which is arranged along the third direction through the base and extends out of the third positioning surface, and one end of the fourth positioning member facing the third positioning component is provided with a positioning inclined surface adapted to the workpiece; An elastic member, wherein opposite ends of the elastic member elastically abut against the fourth positioning member and the base respectively, and the elastic member is used to drive the fourth positioning member to move along the third direction so that the positioning inclined surface pushes the workpiece to the second positioning surface.

8. The positioning fixture according to claim 7, characterized in that: The base is provided with a receiving groove for accommodating the elastic member, and the fourth positioning member includes a positioning rod and a protruding portion connected to each other, one end of the positioning rod penetrates into the receiving groove and abuts against the opposite ends of the elastic member with the bottom of the groove, respectively, and the other end of the positioning rod extends out of the third positioning surface and is provided with the positioning inclined surface, the protruding portion is located in the receiving groove and protrudes from the peripheral side of the positioning rod, and the protruding portion is used to limit the positioning rod.

9. The positioning fixture according to claim 1, characterized in that: The positioning fixture also includes: A rotating member is connected to a side wall of the base, and is used to drive the base to rotate a preset angle.

10. The positioning fixture according to claim 1, characterized in that: The first positioning component and the reference member are both provided with avoidance grooves, and the avoidance grooves are used to avoid external processed parts.

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