Positioning mechanism

Abstract

The utility model discloses a positioning mechanism which comprises a base, a plurality of sliding assemblies connected to the base in a sliding mode in the first direction, a plurality of positioning assemblies and a plurality of fastening assemblies, the positioning assemblies and the fastening assemblies are connected to the sliding assemblies in a sliding mode in the second direction, and the sliding assemblies are arranged at intervals in the first direction. The multiple fastening assemblies are in one-to-one correspondence with the multiple sliding assemblies and the multiple positioning assemblies, and the fastening assemblies and the corresponding positioning assemblies are arranged in the second direction at intervals. When the positioning mechanism is used for positioning different workpieces, only the positions of the sliding assemblies, the positioning assemblies and the fastening assemblies need to be correspondingly adjusted according to the shapes and structures of the workpieces, then the workpieces are supported on the sliding assemblies, and the positioning assemblies abut against and position the workpieces; and the plurality of fastening assemblies are used for pressing the workpiece on the plurality of sliding assemblies. Therefore, the positioning mechanism improves the universality of workpiece positioning, the positioning mechanism does not need to be redesigned and manufactured for different workpieces, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece processing positioning devices, and in particular to a positioning mechanism. Background Art

[0002] At present, when a workpiece needs to be positioned, a positioning mechanism is usually designed specifically according to the shape and structure of the workpiece. However, when the shape and structure of the workpiece change, the positioning mechanism needs to be redesigned according to the change in the shape and structure of the workpiece, resulting in poor versatility and high cost of workpiece positioning. Utility Model Content

[0003] In view of the above, it is necessary to propose a positioning mechanism to improve the versatility of workpiece positioning and reduce costs.

[0004] An embodiment of the present application provides a positioning mechanism for positioning a workpiece, comprising a base, a plurality of sliding components, a plurality of positioning components and a plurality of fastening components; a plurality of sliding components are slidably connected to the base along a first direction, and the plurality of sliding components are spaced apart along the first direction, and the workpiece is supported on the plurality of sliding components; a plurality of positioning components correspond one-to-one to the plurality of sliding components, respectively, each of the positioning components is slidably connected to the corresponding sliding component along a second direction perpendicular to the first direction, and the plurality of positioning components abut and position the workpiece; a plurality of fastening components correspond one-to-one to the plurality of sliding components and the plurality of positioning components, respectively, each of the fastening components is slidably connected to the corresponding sliding component along the second direction, and each of the fastening components is spaced apart from the corresponding positioning component along the second direction, and the plurality of fastening components press the workpiece against the plurality of sliding components.

[0005] The positioning mechanism of the embodiment of the present application is connected to the base by sliding along the first direction by setting a plurality of sliding components, and a plurality of positioning components and a plurality of fastening components are connected to the plurality of sliding components by sliding along the second direction respectively. When the positioning mechanism positions workpieces of different shapes and structures, it is only necessary to adjust the positions of the plurality of sliding components, the plurality of positioning components and the plurality of fastening components according to the shape and structure of the workpiece, and then support the workpiece on the plurality of sliding components, make the plurality of positioning components abut the workpiece, and make the plurality of fastening components press the workpiece against the plurality of sliding components to complete the accurate positioning of the workpiece. In this way, the positioning mechanism of the embodiment of the present application improves the versatility of workpiece positioning, and there is no need to redesign the positioning mechanism according to the changes in the shape and structure of the workpiece, thereby reducing the cost.

[0006] In some embodiments, a sliding groove extending along the first direction is provided on the base, and each of the sliding components includes a sliding member and a supporting member; the sliding member is slidably connected to the sliding groove; the supporting member is connected to the sliding member and extends along the second direction, and the sliding member drives the corresponding supporting member to slide along the first direction, and the workpiece is supported by the supporting members of multiple sliding components, and each positioning component and each fastening component are slidably connected to the supporting member of the corresponding sliding component along the second direction.

[0007] In some embodiments, the groove walls on opposite sides of the sliding groove are provided with stop grooves extending along the first direction, and the sliding member includes a stop portion and a connecting portion; the stop portion is slidably connected to the sliding groove and extends along the second direction, and the two ends of the stop portion extend into the two stop grooves respectively; one end of the connecting portion is connected to the middle part of the stop portion, and the other end of the connecting portion extends through the sliding groove along a third direction and is connected to the corresponding support member, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In some embodiments, the connecting portion is slidably inserted into the corresponding supporting member, and each of the sliding assemblies further includes a pressing member, which is rotatably connected to an end of the connecting portion away from the stop portion and abuts against a side of the corresponding supporting member away from the base, and the pressing member presses the corresponding supporting member onto the base when the corresponding sliding member drives the corresponding supporting member to slide to a first preset position.

[0009] In some embodiments, a guide groove extending along the second direction is formed on a side of the support member of each sliding assembly facing away from the base, and each positioning assembly and each fastening assembly are slidably connected in the corresponding guide groove.

[0010] In some embodiments, the support member of each sliding component is provided with an avoidance groove extending along the second direction on one side facing the base, the avoidance groove is arranged opposite to and connected to the corresponding guide groove, the width of the avoidance groove in the first direction is smaller than the width of the guide groove in the first direction, and each positioning component includes a positioning member and a locking member; the positioning member is slidably connected to the corresponding guide groove; one end of the locking member abuts against the side of the corresponding support member facing the base, the other end of the locking member is passed through the avoidance groove and connected to the positioning member, and the locking member pulls the positioning member and locks the positioning member in the corresponding guide groove when the positioning member slides to a second preset position.

[0011] In some embodiments, the positioning member includes a moving block and a positioning pin; the moving block is slidably connected to the corresponding guiding groove, the other end of the locking member is connected to the moving block, and an insertion hole is formed on a side of the moving block facing away from the locking member; the positioning pin is movably inserted into the insertion hole and extends out of the corresponding guiding groove.

[0012] In some embodiments, each fastening assembly includes a moving member, a tension member, and a pressing member; the moving member is slidably connected to the corresponding guiding groove; one end of the tension member abuts against a side of the corresponding supporting member facing the base, and the other end passes through the avoiding groove and is connected to the moving member. When the moving member slides to a third preset position, the tension member pulls the moving member and locks the moving member in the corresponding guiding groove; the pressing member is connected to a side of the moving member facing away from the tension member, and the pressing member presses the workpiece against the supporting members of the plurality of sliding assemblies.

[0013] In some embodiments, the positioning mechanism further includes a material guiding member, which is obliquely connected to the base and is located below the supporting members of the plurality of positioning components. The material guiding member collects and guides out the debris generated during the machining of the workpiece.

[0014] In some embodiments, the base includes a seat body and two bearing members; the two bearing members are spaced apart from the seat body along the second direction, and a sliding groove is formed on a side of each of the two bearing members facing away from the seat body. The number of sliding members is two, and the two sliding members are respectively slidably connected to the two sliding grooves. Two ends of the supporting member of each sliding assembly are respectively connected to the two sliding members. The material guiding member is respectively connected to the two bearing members and is located between the two bearing members. The included angle between the material guiding member and the seat body is an acute angle. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the positioning mechanism provided by an embodiment of the present application.

[0016] Figure 2 is Figure 1 an exploded structural schematic diagram of the positioning mechanism shown in the figure.

[0017] Figure 3 is Figure 2 a three-dimensional structural schematic diagram of the supporting member in the positioning mechanism shown in the figure.

[0018] Figure 4 is Figure 2 an enlarged schematic diagram of the IV area of the positioning mechanism shown in the figure.

[0019] Description of the Main Component Symbols

[0020] Positioning mechanism 100

[0021] Base 10

[0022] Seat body 11

[0023] Carrier 12

[0024] Threaded hole 121

[0025] Sliding groove 122

[0026] Stopping groove 123

[0027] Material guiding part 20

[0028] Material guiding portion 21

[0029] Connecting ear 22

[0030] Connecting hole 221

[0031] Bolt 23

[0032] Sliding assembly 30

[0033] Supporting part 31

[0034] Perforation 311

[0035] Guiding groove 312

[0036] Avoiding groove 313

[0037] Slider 32

[0038] Stopping portion 321

[0039] Connecting portion 322

[0040] Pressing part 33

[0041] Positioning assembly 40

[0042] Positioning part 41

[0043] Moving block 411

[0044] Insertion hole 4111

[0045] Positioning pin 412

[0046] Locking part 42

[0047] Fastening assembly 50

[0048] Moving part 51

[0049] Mounting hole 511

[0050] Tensioning part 52

[0051] Extrusion part 53 Specific implementation manner

[0052] The following details the implementation manners of the present application. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0053] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0054] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that can communicate with each other. It may be directly connected, or indirectly connected through an intermediate medium. It may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the drawings.

[0055] Please refer to Figure 1 , the embodiment of the present application provides a positioning mechanism 100 for positioning a workpiece (not shown in the figure). Among them, the workpiece can be a housing, a panel, etc. of an electronic product. For the convenience of understanding, the embodiment of the present application takes the workpiece as the housing of an electronic product as an example. Obviously, this is not a limitation of the embodiment of the present application.

[0056] Please refer to Figure 1 and Figure 2, in this embodiment, the positioning mechanism 100 includes a base 10, a feeding member 20 obliquely connected to the base 10, a plurality of sliding components 30 slidably connected to the base 10 along a first direction and located above the feeding member 20, and a plurality of positioning components 40 and a plurality of fastening components 50 respectively slidably connected to the sides of the plurality of sliding components 30 away from the base 10 along a second direction. Among them, the first direction is the width direction of the base 10, that is, Figure 1 and Figure 2 the Y-axis direction in Figure 1 and Figure 2 the X-axis direction in, and the first direction and the second direction are perpendicular to each other.

[0057] The base 10 includes a seat body 11 and two bearing members 12. The seat body 11 and the two bearing members 12 are both plate-shaped. The two bearing members 12 are spaced apart along the second direction and carried on the seat body 11, and the two bearing members 12 are perpendicularly connected to the seat body 11. A plurality of threaded holes 121 are respectively formed on the sides of the two bearing members 12 close to each other, and a sliding groove 122 extending along the first direction is respectively formed on the sides of the two bearing members 12 away from the seat body 11. Stopping grooves 123 extending along the first direction are formed on the opposite side walls of each sliding groove 122; the feeding member 20 is connected to the plurality of threaded holes 121 formed on the two bearing members 12 and is located between the two bearing members 12, and the included angle between the feeding member 20 and the seat body 11 is an acute angle; both ends of each sliding component 30 are slidably installed in the two sliding grooves 122 along the first direction, and the plurality of sliding components 30 are arranged at intervals along the first direction; the plurality of positioning components 40 and the plurality of sliding components 30 correspond to each other one by one, and each positioning component 40 is slidably connected to the corresponding sliding component 30 along the second direction; the plurality of fastening components 50 and the plurality of sliding components 30 and the plurality of positioning components 40 correspond to each other one by one, and each fastening component 50 is slidably connected to the corresponding sliding component 30 along the second direction, and each fastening component 50 and the corresponding positioning component 40 are arranged at intervals along the second direction.

[0058] When the positioning mechanism 100 positions the workpiece, the positions of the plurality of sliding components 30, the plurality of positioning components 40 and the plurality of fastening components 50 are correspondingly adjusted according to the structure and shape of the workpiece, and then the workpiece is supported on the plurality of sliding components 30. Manually move and operate the plurality of positioning components 40 to make the plurality of positioning components 40 abut against the side wall of the workpiece to position the workpiece, and finally manually move and operate the plurality of fastening components 50 to make the plurality of fastening components 50 press the workpiece against the plurality of sliding components 30. When a processing device (not shown in the figure) processes the positioned workpiece, since the feeding member 20 is located below the plurality of sliding components 30, the feeding member 20 collects and exports the debris generated during the processing of the workpiece, avoiding the debris from scattering everywhere and affecting the processing environment and the processing quality of the workpiece.

[0059] In this embodiment, the material guiding member 20 includes a material guiding portion 21, a plurality of connecting lugs 22 vertically connected to both sides of the material guiding portion 21 respectively, and a plurality of bolts 23 respectively connected to the corresponding connecting lugs 22. Both the material guiding portion 21 and the plurality of connecting lugs 22 are plate-shaped. The material guiding portion 21 is located between two bearing members 12, and the included angle between the material guiding portion 21 and the base body 11 is an acute angle. Connecting holes 221 are formed in the plurality of connecting lugs 22, and the plurality of bolts 23 respectively pass through the corresponding connecting holes 221 and are connected to a plurality of threaded holes 121 formed in the two bearing members 12. In this way, it is convenient to disassemble and assemble the material guiding member 20 and the base body 11.

[0060] Please refer to Figure 3 , in this embodiment, each sliding assembly 30 includes a support member 31 extending in the second direction, two sliding members 32 respectively connected to both ends of the support member 31, and two pressing members 33 respectively rotatably connected to the two sliding members 32.

[0061] The support member 31 is block-shaped and located above the base 10. The support members 31 of the plurality of sliding assemblies 30 are arranged at intervals in the first direction. Through holes 311 are formed at both ends of each support member 31. A guiding groove 312 extending in the second direction is formed on the side of each support member 31 facing away from the base 10. An avoidance groove 313 extending in the second direction is formed on the side of each support member 31 facing the base 10. The avoidance groove 313 is disposed opposite to and communicated with the corresponding guiding groove 312. The width of the avoidance groove 313 in the first direction is smaller than the width of the guiding groove 312 in the first direction. Each positioning assembly 40 and each fastening assembly 50 are both slidably connected to the corresponding guiding groove 312, which is beneficial to improving the accuracy of the positioning assembly 40 and the fastening assembly 50 sliding in the second direction.

[0062] The two sliding members 32 of each sliding assembly 30 are respectively slidably connected to two sliding grooves 122. Each sliding member 32 includes a stop portion 321 and a connecting portion 322 vertically connected to the stop portion 321. Both the stop portion 321 and the connecting portion 322 are block-shaped. The stop portion 321 is slidably connected to the corresponding sliding groove 122 and extends in the second direction. Both ends of the stop portion 321 respectively extend into two stop grooves 123. One end of the connecting portion 322 is connected to the middle of the stop portion 321. The other end of the connecting portion 322 extends in the third direction through the sliding groove 122 and slidably passes through the through hole 311 formed in the support member 31. The third direction is the height direction of the base 10, that is Figure 1 and Figure 2In the Z-axis direction, the first direction, the second direction, and the third direction are perpendicular to each other in pairs. When the sliding member 32 slides in the corresponding sliding groove 122, the stop portion 321 cooperates with the two stop grooves 123 to prevent the sliding member 32 from disengaging from the corresponding sliding groove 122, and can further limit the sliding direction of the sliding member 32, thereby facilitating the improvement of the accuracy and stability of the sliding member 32 when sliding in the sliding groove 122.

[0063] The pressing member 33 is a cam handle. Each pressing member 33 is rotatably connected to one end of the corresponding connecting portion 322 away from the corresponding stop portion 321 and abuts against the side of the corresponding support member 31 away from the base 10. When the sliding member 32 drives the corresponding support member 31 to slide to the first preset position, the pressing member 33 is rotated to press the corresponding support member 31 to move downward, so as to press the corresponding support member 31 against the two bearing members 12 of the base 10, thereby facilitating the improvement of the stability of the multiple sliding assemblies 30 in supporting the workpiece. Among them, the first preset position is a position where the sliding member 32 drives the corresponding support member 31 to move to a position where the workpiece can be stably supported according to the shape and size of the workpiece.

[0064] Please further refer to Figure 4 In this embodiment, each positioning assembly 40 includes a positioning member 41 and a locking member 42 connected to the positioning member 41. The positioning member 41 is slidably connected to the corresponding guiding groove 312. The positioning member 41 includes a moving block 411 and a positioning pin 412 connected to the moving block 411. The positioning member 41 is slidably connected to the corresponding guiding groove 312. The locking member 42 is a toggle screw. One end of the locking member 42 abuts against the side of the corresponding support member 31 facing the base 10. The other end of the locking member 42 passes through the avoidance groove 313 and is threadedly connected to the moving block 411 of the positioning member 41. An insertion hole 4111 is formed on the side of the moving block 411 away from the locking member 42. The positioning pin 412 is movably inserted into the insertion hole 4111 and extends out of the corresponding guiding groove 312, so as to facilitate the positioning pin 412 to abut against and position the workpiece, and facilitate the replacement of the corresponding positioning pin 412 according to the structural characteristics of the workpiece.

[0065] After the workpiece is supported on the multiple support members 31, the positioning member 41 is toggled to slide to the second preset position. The second preset position is the position when the positioning pin 412 of the positioning member 41 abuts against and positions the side wall of the workpiece. At this time, the locking member 42 is screwed to pull the positioning member 41 and lock the positioning member 41 in the corresponding guiding groove 312, thereby effectively reducing the probability of loosening of the positioning assembly 40 after positioning the workpiece.

[0066] In this embodiment, each fastening assembly 50 includes a moving part 51, a tensioning part 52 and an extrusion part 53 connected to the moving part 51. The moving part 51 is block-shaped, the tensioning part 52 is a horn screw, and the extrusion part 53 is a fixing screw. The moving part 51 is slidably connected to the corresponding guide groove 312, one end of the tensioning part 52 abuts against the side of the corresponding support member 31 facing the base 10, the other end of the tensioning part 52 is inserted into the avoidance groove 313 and is threadedly connected to the moving part 51, and a mounting hole 511 is opened on the side of the moving part 51 away from the tensioning part 52, and the extrusion part 53 is threadedly connected to the mounting hole 511.

[0067] After the workpiece is positioned, the extrusion member 53 is moved so that the extrusion member 53 drives the moving member 51 to slide to the third preset position, where the extrusion member 53 abuts against the side wall of the workpiece. At this time, the tension member 52 is screwed so that the tension member 52 pulls the moving member 51 and locks the moving member 51 in the corresponding guide groove 312, and then the extrusion member 53 is screwed so that the extrusion member 53 presses the workpiece against the supporting members 31 of the plurality of sliding assemblies 30. In this way, it is easy to operate the fastening assembly 50 so that the fastening assembly 50 can quickly press the workpiece, and the probability of loosening after the fastening assembly 50 presses the workpiece can be effectively reduced.

[0068] The process of positioning the workpiece by the positioning mechanism 100 of the embodiment of the present application is roughly as follows:

[0069] Adjust the positions of the plurality of sliding components 30, the plurality of positioning components 40 and the plurality of fastening components 50 accordingly according to the structure and shape of the workpiece;

[0070] Supporting the workpiece on the support members 31 of the plurality of sliding assemblies 30;

[0071] Manually move the sliding assembly 30 so that the positioning pin 412 of the positioning member 41 abuts against the side wall of the workpiece for positioning, and screw the locking member 42 so that the locking member 42 pulls the positioning member 41 and locks the positioning member 41 in the corresponding guide groove 312;

[0072] Manually move the fastening assembly 50 to make the extrusion member 53 abut against the side wall of the workpiece, screw the tensioning member 52 to make it pull the moving member 51 and lock the moving member 51 in the corresponding guide groove 312, and screw the extrusion member 53 to make it press the workpiece onto the support members 31 of the multiple sliding assemblies 30.

[0073] In summary, in the positioning mechanism 100 of the embodiment of the present application, a plurality of sliding components 30 are slidably connected to the base 10 along the first direction, and a plurality of positioning components 40 and a plurality of fastening components 50 are respectively slidably connected to the plurality of sliding components 30 along the second direction. When the positioning mechanism 100 positions workpieces with different shapes and structures, it only needs to correspondingly adjust the positions of the plurality of sliding components 30, the plurality of positioning components 40, and the plurality of fastening components 50 according to the shape and structure of the workpiece, and then support the workpiece on the plurality of sliding components 30, make the plurality of positioning components 40 abut against the workpiece, and make the plurality of fastening components 50 press the workpiece against the plurality of sliding components 30 to complete the accurate positioning of the workpiece. In this way, the positioning mechanism 100 of the embodiment of the present application improves the versatility of workpiece positioning, and there is no need to redesign the positioning mechanism 100 according to the changes in the shape and structure of the workpiece, reducing the cost.

[0074] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present application, the present application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, it is intended to cover all changes falling within the meaning and scope of the equivalent elements of the claims in the present application.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A positioning mechanism for positioning a workpiece, characterized in that: include: Pedestal; A plurality of sliding assemblies are slidably connected to the base along a first direction, and the plurality of sliding assemblies are spaced apart along the first direction, and the workpiece is supported on the plurality of sliding assemblies; A plurality of positioning components, corresponding to the plurality of sliding components respectively, each of the positioning components is slidably connected to the corresponding sliding component along a second direction perpendicular to the first direction, and the plurality of positioning components abut against the workpiece respectively; A plurality of fastening components correspond one-to-one to the plurality of sliding components and the plurality of positioning components respectively, each of the fastening components is slidably connected to the corresponding sliding component along the second direction, and each of the fastening components and the corresponding positioning component are spaced apart along the second direction, and the plurality of fastening components press the workpiece onto the plurality of sliding components.

2. The positioning mechanism according to claim 1, characterized in that: The base is provided with a sliding groove extending along the first direction, and each of the sliding components comprises: A sliding member, slidably connected to the sliding groove; A support member is connected to the sliding member and extends along the second direction, the sliding member drives the corresponding support member to slide along the first direction, the workpiece is supported by the support members of multiple sliding components, and each positioning component and each fastening component are slidably connected to the support member of the corresponding sliding component along the second direction.

3. The positioning mechanism according to claim 2, characterized in that: The groove walls on opposite sides of the sliding groove are both provided with stop grooves extending along the first direction, and the sliding member comprises: A stopper, slidably connected to the sliding groove and extending along the second direction, with two ends of the stopper extending into the two stop grooves respectively; A connecting portion, one end of which is connected to the middle of the stop portion, and the other end of which extends along a third direction through the sliding groove and is connected to the corresponding supporting member, wherein the first direction, the second direction and the third direction are perpendicular to each other.

4. The positioning mechanism according to claim 3, characterized in that: The connecting part is slidably inserted into the corresponding supporting member, and each of the sliding assemblies further includes a pressing member, which is rotatably connected to one end of the connecting part away from the stop portion and abuts against a side of the corresponding supporting member away from the base, and the pressing member presses the corresponding supporting member onto the base when the corresponding sliding member drives the corresponding supporting member to slide to a first preset position.

5. The positioning mechanism according to claim 2, characterized in that: A guide groove extending along the second direction is provided on a side of the support member of each sliding assembly facing away from the base, and each positioning assembly and each fastening assembly are slidably connected in the corresponding guide groove.

6. The positioning mechanism according to claim 5, characterized in that: The support member of each sliding assembly is provided with an avoidance groove extending along the second direction on one side facing the base, the avoidance groove is arranged opposite to and connected to the corresponding guide groove, the width of the avoidance groove in the first direction is smaller than the width of the guide groove in the first direction, and each positioning assembly includes: A positioning member, slidably connected to the corresponding guide groove; A locking member, one end of which is in contact with the corresponding support member on one side of the base, and the other end of which is passed through the avoidance groove and connected to the positioning member. When the positioning member slides to a second preset position, the locking member pulls the positioning member and locks the positioning member in the corresponding guide groove.

7. The positioning mechanism according to claim 6, characterized in that: The positioning member comprises: A moving block is slidably connected to the corresponding guide groove, the other end of the locking member is connected to the moving block, and an insertion hole is provided on a side of the moving block away from the locking member; A positioning pin is movably inserted into the insertion hole and extends out of the corresponding guide groove.

8. The positioning mechanism according to claim 6, characterized in that: Each of the fastening assemblies comprises: A moving part, slidably connected to the corresponding guide groove; A tensioning member, one end of which is in contact with a side of the corresponding supporting member facing the base, and the other end of which is passed through the avoidance groove and connected to the moving member, wherein the tensioning member pulls the moving member and locks the moving member in the corresponding guide groove when the moving member slides to a third preset position; An extrusion member is connected to a side of the moving member facing away from the tensioning member, and the extrusion member presses the workpiece against the supporting members of the plurality of sliding assemblies.

9. The positioning mechanism according to claim 2, characterized in that: The positioning mechanism also includes a material guide member, which is obliquely connected to the base and is located below the support members of the plurality of positioning components. The material guide member collects and guides out debris generated during the processing of the workpiece.

10. The positioning mechanism according to claim 9, characterized in that: The base comprises: seat body; Two bearing members, the two bearing members are spaced apart from the base body along the second direction, and a sliding groove is respectively opened on the side of the two bearing members away from the base body, the number of the sliding members is two, and the two sliding members are respectively slidably connected to the two sliding grooves, the two ends of the supporting member of each sliding assembly are respectively connected to the two sliding members, the material guide member is respectively connected to the two bearing members and is located between the two bearing members, and the angle between the material guide member and the base body is an acute angle.

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