Drilling positioning tool

Abstract

The utility model relates to a drilling positioning tool and relates to the technical field of tool clamps, the drilling positioning tool comprises a first positioning plate, a second positioning plate and a base which are sequentially arranged in the vertical direction, the second positioning plate is fixed to the base, and a limiting hole allowing a drill bit to penetrate through is formed in the first positioning plate; the first positioning plate and the second positioning plate are arranged at an interval and form a positioning space for inserting a workpiece; a plurality of positioning pieces used for positioning workpieces are arranged in the positioning space, each positioning piece comprises a positioning block and a positioning screw rod, the positioning blocks are connected to the second positioning plate, and the positioning screw rods transversely penetrate through the positioning blocks and are in threaded fit with the positioning blocks. The drilling device has the effect of preventing position deviation of a workpiece during drilling, and the machining precision of drilling can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of tooling and fixtures, and in particular to a drilling positioning tooling. Background Art

[0002] After a traditional workpiece is demolded from a mold, it is necessary to drill holes at corresponding locations in order to facilitate assembly with other workpieces. When drilling, a drilling tool is required. The drilling tool mainly includes an upper positioning plate and a lower positioning plate. Both the upper positioning plate and the lower positioning plate are provided with holes for the drill bit to pass through. There is a gap between the upper positioning plate and the lower positioning plate. The workpiece is inserted into the gap, and then the drill bit is inserted into the hole to complete the drilling of the workpiece.

[0003] However, during the drilling process, the workpiece will be subjected to the centrifugal force generated by the rotation of the drill bit, which may cause the position of the workpiece to shift, resulting in low drilling processing accuracy and the workpiece yield rate needs to be improved. Utility Model Content

[0004] The purpose of the present application is to provide a drilling positioning tool that can improve the drilling processing accuracy.

[0005] The drilling positioning tool provided in this application adopts the following technical solution:

[0006] A drilling positioning tool comprises a first positioning plate, a second positioning plate and a base which are arranged in sequence along the vertical direction, the second positioning plate is fixed on the base, a limiting hole for a drill bit to pass through is opened on the first positioning plate, and the first positioning plate and the second positioning plate are arranged at intervals to form a positioning space for inserting a workpiece;

[0007] A plurality of positioning members for positioning the workpiece are arranged in the positioning space, and the positioning members include a positioning block and a positioning screw. The positioning block is connected to the second positioning plate, and the positioning screw passes through the positioning block transversely and cooperates with the positioning block thread.

[0008] By adopting the above technical solution, when positioning the workpiece, the positioning screw is rotated to move along its own length direction and approach the side wall of the workpiece. The positioning screw acts on the workpiece to fix the workpiece, which can prevent the possibility of position displacement of the workpiece during drilling and ensure the processing accuracy of the drilling.

[0009] Optionally, a clamping block for tightly fitting against the side wall of the workpiece is provided at the end of the positioning screw, an arc groove is provided on one side of the clamping block, and a plurality of guide rods arranged around the positioning screw are extended laterally on the other side of the clamping block, the guide rods are inserted into the positioning block and are slidably connected to the positioning block.

[0010] By adopting the above technical solution, the arc groove on the abutting block can better fit with the side wall surface of the workpiece, thereby preventing collision caused by direct contact between the positioning screw and the workpiece.

[0011] Optionally, a through hole for a drill bit to extend into is formed on the second positioning plate, and the through hole is coaxially arranged with the limiting hole.

[0012] By adopting the above technical solution, if a through hole needs to be opened in the workpiece, the drill can be fed continuously until the end of the drill penetrates the workpiece and finally enters the through hole.

[0013] Optionally, a guide sleeve coaxially arranged with the limiting hole is detachably connected to the first positioning plate, and the guide sleeve is in communication with the limiting hole.

[0014] By adopting the above technical solution, when the drill bit descends until it is at the same height as the end of the guide sleeve, observe whether the drill bit and the guide sleeve are on the same axis. If not, adjust the position of the drill bit in time. If they are on the same axis, continue to drive the drill bit down to complete the drilling of the workpiece. In addition, even if an error occurs during observation and the drill bit causes damage to the guide sleeve, the guide sleeve can be disassembled, assembled and replaced, thereby providing better protection for the first positioning plate.

[0015] Optionally, it also includes a fixing part for fixing the workpiece, the fixing part includes a clamp that can be mounted on the plurality of positioning screws, the clamp is provided with a plurality of annular grooves matching the positioning screws, the two ends of the clamp are bent toward the center thereof, and the middle part of the clamp can be in close contact with the side wall of the workpiece.

[0016] By adopting the above technical solution, the two ends of the clamp are bent away from the center of the clamp, and then the clamp is mounted on the positioning screw. Since the clamp has elastic force, the clamp rebounds to its initial state, and the groove wall of the annular groove abuts against the positioning screw. When the workpiece is about to deviate, the clamp is constrained by the positioning screw, thereby preventing the workpiece from moving.

[0017] Optionally, the fixing member further includes a limit plate and a limit screw, wherein the limit plate is rotatably connected to the base and can fit with the workpiece, and a constraint hole is opened on the limit plate, and the limit screw can pass through the constraint hole and cooperate with the base thread.

[0018] By adopting the above technical solution, before the workpiece is inserted into the positioning space, the limit plate is vertically set on the base due to its own gravity. After the workpiece is inserted into the positioning space, the limit plate is rotated until the limit plate is horizontally set. At this time, the limit screw is screwed into the constraint hole and matched with the base thread. At this time, the limit plate is fixed, and the end cross bar of the limit plate is at the avoidance opening and the side wall surface is in contact with the workpiece. Compared with the limiting method of the workpiece by the clamp, it is more convenient and quick to disassemble and assemble.

[0019] Optionally, a clamping member for clamping a workpiece is further provided in the positioning space, and a receiving hole for accommodating the clamping member is provided on the bottom side of the first positioning plate, and the receiving hole is communicated with the limiting hole;

[0020] The clamping member includes a guide sleeve and an elastic element. The guide sleeve is inserted into the accommodating hole. One end of the elastic element is connected to the wall surface of the accommodating hole, and the other end of the elastic element is connected to the guide sleeve.

[0021] By adopting the above technical solution, based on the fact that a reinforcing column is provided on the workpiece and a drilling point to be drilled is provided on the reinforcing column, during the process of inserting the workpiece into the positioning space, if the reinforcing column and the guide sleeve are in a coaxial state, the guide sleeve will descend and cover the outer end of the reinforcing column under the action of the compressed spring, thereby forming a limit for the workpiece.

[0022] Optionally, an outer ring end of the guide sleeve is provided with a ramp groove around itself.

[0023] By adopting the above technical solution, when the workpiece is inserted into the positioning space, the outer wall of the workpiece will contact the end face of the guide sleeve and be guided by the slope groove of the outer ring of the guide sleeve. When the workpiece is inserted into the positioning space, the guide sleeve rises, and the elastic element contracts. When the guide sleeve and the reinforcement column are in a coaxial state, the elastic element rebounds, and the guide sleeve descends and covers the outer end of the reinforcement column, thereby fixing the workpiece.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The present application provides a plurality of positioning members in the positioning space. When positioning the workpiece, the positioning screw is rotated to move the positioning screw along its own length direction and approach the side wall of the workpiece. The positioning screw acts on the workpiece to fix the workpiece, thereby preventing the possibility of position displacement of the workpiece during drilling and ensuring the processing accuracy of the drilling.

[0026] 2. The present application is provided with a guide sleeve. When the drill bit descends until it is at the same height as the end of the guide sleeve, observe whether the drill bit and the guide sleeve are on the same axis. If not, adjust the position of the drill bit in time. If they are on the same axis, continue to drive the drill bit down to complete the drilling of the workpiece. In addition, even if an error is observed and the drill bit causes damage to the guide sleeve, the guide sleeve can be disassembled and replaced, which provides better protection for the first positioning plate.

[0027] 3. In the present application, a clamping part is provided to preliminarily fix the workpiece. A reinforcing column is provided on the workpiece, and a drilling point to be drilled is provided on the reinforcing column. During the process of inserting the workpiece into the positioning space, if the reinforcing column and the guide sleeve are in a coaxial state, the guide sleeve will descend and cover the outer end of the reinforcing column under the action of the compressed spring, thereby forming a limit for the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the drilling positioning tool in Example 1 of the present application;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the drilling positioning tool in Example 1 of the present application after the first positioning plate is removed;

[0030] Figure 3 is a schematic cross-sectional structural diagram of the positioning member in Example 1 of the present application;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the drilling positioning tool in Example 2 of the present application;

[0032] Figure 5 It is a schematic diagram of the exploded structure of the drilling positioning tool in Example 3 of the present application;

[0033] Figure 6 It is a schematic diagram of the cross-sectional structure of the clamping component in Example 3 of the present application.

[0034] In the figure, 1, first positioning plate; 11, limiting hole; 12, accommodating hole; 2, second positioning plate; 21, through hole; 3, base; 4, workpiece; 41, plate body; 42, shell cover; 43, reinforcing column; 44, reinforcing rib; 5, positioning member; 51, positioning block; 52, positioning screw; 53, tightening block; 531, arc groove; 532, insertion hole; 54, guide rod; 55, convex edge; 6, guide sleeve; 7, fixing member; 71, clamp; 711, annular groove; 72, limiting plate; 721, restraining hole; 73, limiting screw; 8, clamping member; 81, guide sleeve; 811, ramp groove; 812, restraining groove; 813, avoidance groove; 82, elastic element; 10, positioning space; 20, avoidance opening. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0036] Embodiment 1:

[0037] A drilling positioning tool, referring to Figure 1 and Figure 2 , including a first positioning plate 1, a second positioning plate 2 and a base 3 which are arranged in sequence along the vertical direction, the second positioning plate 2 is fixed on the base 3, the first positioning plate 1 is provided with a limiting hole 11 for the drill bit to pass through, the first positioning plate 1 and the second positioning plate 2 are spaced apart to form a positioning space 10 for inserting a workpiece 4, and a plurality of positioning members 5 for positioning the workpiece 4 are arranged in the positioning space 10.

[0038] Reference Figure 2 and Figure 3 A clearance opening 20 for avoiding the workpiece 4 is opened on the same side of the second positioning plate 2 and the base 3 to ensure that the workpiece 4 can smoothly enter the positioning space 10 for positioning. Furthermore, a corresponding clearance opening 20 is also opened on the first positioning plate 1 for relevant personnel to observe the matching status of the workpiece 4.

[0039] Reference Figure 1 The first positioning plate 1 is detachably connected with a guide sleeve 6 coaxially arranged with the limiting hole 11 by screws, and the guide sleeve 6 is connected with the limiting hole 11. When the drill bit drills the workpiece 4, it will pass through the guide sleeve 6 and the limiting hole 11 on the first positioning plate 1 in sequence, and then contact the workpiece 4. In this embodiment, the guide sleeve 6 mainly guides the drilling and serves as a reference for judging whether the drill bit and the limiting hole 11 are aligned.

[0040] When the drill bit descends until it is at the same height as the end of the guide sleeve 6, observe whether the drill bit and the guide sleeve 6 are on the same axis. If not, adjust the position of the drill bit in time. If they are, continue to drive the drill bit down to complete the drilling of the workpiece 4. In addition, even if an error is observed and the drill bit causes damage to the guide sleeve 6, the guide sleeve 6 can be disassembled and replaced, thereby providing better protection for the first positioning plate 1.

[0041] It should be noted that the number of the limiting holes 11 matches the number of positions on the workpiece 4 where holes need to be drilled. In the present embodiment, there are three points to be drilled on the workpiece 4. Correspondingly, the number of the limiting holes 11 and the guide sleeves 6 are both set to three, and the three limiting holes 11 are connected to the three guide sleeves 6 one by one.

[0042] Reference Figure 2The workpiece 4 mainly includes a plate body part 41 and a shell cover part 42. The shell cover part 42 is located on one side of the plate body part and is connected with the plate body part 41. Correspondingly, a through opening connected to the shell cover is opened on the plate body part 41, and three circular reinforcing columns 43 are arranged on the plate body around the through opening. The center of each reinforcing column 43 is the drilling point where the drill bit needs to drill a hole.

[0043] Reference Figure 1 The workpiece 4 first enters the arc-shaped setting on one side of the positioning space 10. Correspondingly, a plurality of positioning members 5 are provided. The positioning members 5 are arranged around the arc edge of the workpiece 4 to better fix the workpiece 4. In this embodiment, there are 5 positioning members 5, all of which can abut against the side wall surface of the workpiece 4.

[0044] Reference Figure 2 and Figure 3 The positioning member 5 includes a positioning block 51 and a positioning screw 52. The positioning block 51 is arranged on the second positioning plate 2. The positioning screw 52 horizontally penetrates the positioning block 51 and is threadedly engaged with the positioning block 51. When the workpiece 4 enters the positioning space 10, the corresponding positioning screws 52 at each position are screwed to make the positioning screws 52 cooperate with the side wall of the workpiece 4 to complete the fixation of the workpiece 4.

[0045] In addition, the two ends of the positioning block 51 in the vertical direction are detachably connected to the first positioning plate 1 and the second positioning plate 2 by screws, that is, the height of the positioning block 51 is the size of the gap between the first positioning plate 1 and the second positioning plate 2. In this embodiment, the height of the positioning block 51 is greater than the thickness of the plate body portion 41 of the workpiece 4 to ensure that the workpiece 4 can be smoothly inserted from the avoidance opening 20 into the positioning space 10.

[0046] Furthermore, in order to better fix the workpiece 4, a clamping block 53 for tightly fitting against the side wall of the workpiece 4 is provided at the end of the positioning screw 52, ​​and an arc groove 531 is provided on one side of the clamping block 53, and the groove wall of the arc groove 531 can fit against the side wall of the workpiece 4. A plurality of guide rods 54 arranged around the positioning screw 52 are laterally extended on the other side of the clamping block 53. In the present embodiment, 5 guide rods 54 are provided, and the guide rods 54 are inserted into the positioning block 51 and are slidably connected with the positioning block 51.

[0047] When positioning the workpiece 4, the positioning screw 52 is rotated to move the positioning screw 52 along its own length direction and approach the side wall of the workpiece 4. The positioning screw 52 further pushes the abutment block 53 to move. Under the constraint of the guide rod 54, the abutment block finally fits against the side wall of the workpiece 4.

[0048] When the workpiece 4 is drilled, the positioning screw 52 is rotated in the opposite direction to make it retreat. During the retreat process, the positioning screw 52 drives the clamping block 53 to retreat synchronously. Specifically, a convex edge 55 is arranged around the end of the positioning screw 52. One end of the positioning screw 52 having the convex edge 55 is inserted into the clamping block 53. Correspondingly, the clamping block 53 is provided with an insertion hole 532 for accommodating the convex edge 55. The convex edge 55 fits with the wall of the insertion hole 532, thereby driving the clamping block 53 to move synchronously while the threaded rod moves along its own length direction.

[0049] It should be noted that since there are multiple positioning members 5, the positioning screws 52 are set at different positions. Correspondingly, the shapes of the clamping blocks 53 corresponding to the positioning screws 52 at different positions will also be different, that is, the curvature of the arc groove 531 on the clamping block 53 is different, so that the clamping block 53 can better fit the side wall of the workpiece 4.

[0050] In addition, a through hole 21 for the drill bit to extend into is provided on the second positioning plate 2. The through hole 21 is coaxially arranged with the limiting hole 11. If a through hole needs to be opened in the workpiece 4, the drill bit can be fed continuously until the end of the drill bit penetrates the workpiece 4 and finally enters the through hole 21.

[0051] Reference Figure 1 and Figure 2 , and also includes a fixing member 7 for fixing the workpiece 4. The fixing member 7 includes a clamp 71 that can be mounted on multiple positioning screws 52. The clamp 71 is provided with multiple annular grooves 711 that match the positioning screws 52. Both ends of the clamp 71 are bent toward the center thereof, and the middle portion of the clamp 71 can be tightly attached to the side wall of the workpiece 4.

[0052] The clamp 71 is elastic, so that the two ends of the clamp 71 are bent away from the center thereof, and then the clamp 71 is mounted on the positioning screw 52. Since the clamp 71 has elastic force, the clamp 71 rebounds to its initial state, and the groove wall of the annular groove 711 abuts against the positioning screw 52. When the workpiece 4 is about to deviate, the clamp 71 is constrained by the positioning screw 52, ​​thereby preventing the workpiece 4 from moving.

[0053] The implementation principle of Example 1 of the present application is:

[0054] Insert the workpiece 4 into the positioning space 10 from the avoidance opening 20, then align the reinforcing column 43 and the guide sleeve 6 so that the reinforcing column 43 and the guide sleeve 6 are coaxially arranged, then turn the positioning screw 52, ​​and the positioning screw 52, ​​under the guidance of the guide rod 54, pushes the clamping block 53 toward the workpiece 4, and the arc groove 531 of the clamping block 53 finally abuts against the side wall of the workpiece 4 to complete the positioning of the workpiece 4, and then extend the drill bit into the limiting hole 11 to perform drilling operation on the workpiece 4.

[0055] Embodiment 2:

[0056] Reference Figure 4 The difference between this embodiment 2 and embodiment 1 is that the fixing member 7 also includes a limit plate 72 and a limit screw 73. The limit plate 72 is rotatably connected to the base 3 and can fit with the workpiece 4. A constraint hole 721 is opened on the limit plate 72. The limit screw 73 can pass through the constraint hole 721 and cooperate with the base 3 thread. In this embodiment, two limit plates 72 and two limit screws 73 are provided. The two limit plates 72 and the two limit screws 73 are arranged in a one-to-one correspondence, with one limit plate 72 and one limit screw 73 as a group, and are arranged opposite to each other on the base 3.

[0057] The implementation principle of Example 2 of the present application is:

[0058] Before the workpiece 4 is inserted into the positioning space 10, the limit plate 72 is vertically set on the base 3 due to its own gravity. After the workpiece 4 is inserted into the positioning space 10, the limit plate 72 is rotated until the limit plate 72 is horizontally set. At this time, the limit screw 73 is screwed into the constraint hole 721 and matched with the thread of the base 3. At this time, the limit plate 72 is fixed, and the end cross bar of the limit plate 72 is at the avoidance opening 20 and the side wall surface is in contact with the workpiece 4. Compared with the limiting method of the clamp 71 for the workpiece 4, it is more convenient and quick to disassemble and assemble.

[0059] Embodiment 3:

[0060] Reference Figure 5 and Figure 6 The difference between the present embodiment 3 and the embodiment 2 is that a clamping member 8 for clamping the workpiece 4 is further provided in the positioning space 10, and a receiving hole 12 for accommodating the clamping member 8 is provided on the bottom side of the first positioning plate 1, and the receiving hole 12 is connected with the limiting hole 11; in addition, the aperture of the receiving hole 12 is larger than the aperture of the limiting hole 11. In the present embodiment, the aperture of the receiving hole 12 is twice that of the limiting hole 11.

[0061] The clamping member 8 includes a guide sleeve 81 and an elastic element 82. In the present embodiment, the elastic element 82 is preferably a spring. In other embodiments, the elastic element 82 may also be made of materials such as elastic sponge. The guide sleeve 81 is inserted into the accommodating hole 12. One end of the elastic element 82 is fixedly connected to the wall of the accommodating hole 12. The other end of the elastic element 82 is fixedly connected to the guide sleeve 81. Furthermore, an annular constraint groove 812 is provided on the guide sleeve 81. The constraint groove 812 is arranged around the guide sleeve 81. The elastic element 82 extends into the constraint groove 812 and is constrained by the wall of the constraint groove 812.

[0062] Furthermore, the outer ring wall of the guide sleeve 81 abuts against the hole wall of the accommodating hole 12, and the inner ring aperture of the guide sleeve 81 is larger than the aperture of the limiting hole 11 to facilitate the drill bit to pass through. The inner ring and outer ring at the end of the guide sleeve 81 are both provided with a ramp groove 811 around themselves.

[0063] When the workpiece 4 is inserted into the positioning space 10, the outer wall of the workpiece 4 will contact the end face of the guide sleeve 81 and be guided by the outer ring slope groove 811 of the guide sleeve 81. When the workpiece 4 is inserted into the positioning space 10, the guide sleeve 81 rises, and the elastic element 82 contracts. When the guide sleeve 81 and the reinforcing column 43 are in a coaxial state, the elastic element 82 rebounds, and the guide sleeve 81 descends and covers the outer end of the reinforcing column 43 to fix the workpiece 4. When the workpiece 4 is pulled out, it is guided by the inner ring slope groove 811 of the guide sleeve 81 and rises.

[0064] It should be noted that in Figure 6 In the embodiment, the guide sleeve 81 is still in the process of descending and has not yet fully engaged with the reinforcing column 43 .

[0065] In addition, since the reinforcing columns 43 on the plate-like parts of some workpieces 4 may have additionally extended reinforcing ribs 44 to improve the overall strength of the workpiece 4, in this embodiment, an avoidance groove 813 for avoiding the reinforcing ribs 44 is provided on the guide sleeve 81 to ensure smooth cooperation between the guide sleeve 81 and the reinforcing columns 43.

[0066] It should be noted that, in the present embodiment, if the reinforcing column 43 of the workpiece 4 is partially extended with reinforcing ribs 44, and the guide sleeve 81 is lowered too deep so that the guide sleeve 81 is constrained by the reinforcing ribs 44, then the ruler plate can be inserted into the gap between the workpiece 4 and the first positioning plate 1, and the guide sleeve 81 can be lifted up by the ruler plate to remove the workpiece 4, and the size of the spring can be replaced in time to prevent the guide sleeve 81 from descending too far.

[0067] The implementation principle of Example 3 of the present application is:

[0068] Based on the fact that a reinforcing column 43 is provided on the workpiece 4 and a drilling point to be drilled is provided on the reinforcing column 43, during the process of inserting the workpiece 4 into the positioning space 10, if the reinforcing column 43 and the guide sleeve 81 are in a coaxial state, under the action of the compressed spring, the guide sleeve 81 will descend and cover the outer end of the reinforcing column 43, thereby forming a limit for the workpiece 4.

[0069] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drilling positioning tool, It is characterized in that The invention comprises a first positioning plate (1), a second positioning plate (2) and a base (3) which are arranged in sequence along the vertical direction, the second positioning plate (2) being fixed on the base (3), the first positioning plate (1) being provided with a limiting hole (11) for a drill to pass through, and the first positioning plate (1) and the second positioning plate (2) being arranged at an interval to form a positioning space (10) for inserting a workpiece (4); A plurality of positioning members (5) for positioning the workpiece (4) are arranged in the positioning space (10), the positioning members (5) comprising a positioning block (51) and a positioning screw (52), the positioning block (51) being connected to the second positioning plate (2), the positioning screw (52) penetrating the positioning block (51) transversely and being threadedly engaged with the positioning block (51).

2. A drilling positioning tool according to claim 1, It is characterized in that The end of the positioning screw (52) is provided with a clamping block (53) for tightly contacting the side wall of the workpiece (4); an arc groove (531) is provided on one side of the clamping block (53); and a plurality of guide rods (54) arranged around the positioning screw (52) extend transversely from the other side of the clamping block (53); the guide rods (54) are inserted into the positioning block (51) and are slidably connected to the positioning block (51).

3. A drilling positioning tool according to claim 1, It is characterized in that The second positioning plate (2) is provided with a through hole (21) for a drill bit to extend into, and the through hole (21) is coaxially arranged with the limiting hole (11).

4. A drilling positioning tool according to claim 3, It is characterized in that A guide sleeve (6) coaxially arranged with the limiting hole (11) is detachably connected to the first positioning plate (1), and the guide sleeve (6) is in communication with the limiting hole (11).

5. A drilling positioning tool according to claim 1, It is characterized in that It also includes a fixing member (7) for fixing the workpiece (4), the fixing member (7) including a clamp (71) that can be mounted on the plurality of positioning screws (52), the clamp (71) being provided with a plurality of annular grooves (711) that match the positioning screws (52), the two ends of the clamp (71) being bent toward the center thereof, and the middle portion of the clamp (71) being able to fit tightly against the side wall of the workpiece (4).

6. A drilling positioning tool according to claim 5, It is characterized in that The fixing member (7) further comprises a limiting plate (72) and a limiting screw (73); the limiting plate (72) is rotatably connected to the base (3) and can fit with the workpiece (4); a restraining hole (721) is provided on the limiting plate (72); the limiting screw (73) can pass through the restraining hole (721) and be threadedly engaged with the base (3).

7. The drilling positioning tool according to claim 1, It is characterized in that A clamping member (8) for clamping a workpiece (4) is also provided in the positioning space (10); a receiving hole (12) for receiving the clamping member (8) is provided on the bottom side of the first positioning plate (1); the receiving hole (12) is communicated with the limiting hole (11); The clamping member (8) comprises a guide sleeve (81) and an elastic element (82); the guide sleeve (81) is inserted into the accommodating hole (12); one end of the elastic element (82) is connected to the wall surface of the accommodating hole (12); and the other end of the elastic element (82) is connected to the guide sleeve (81).

8. A drilling positioning tool according to claim 7, It is characterized in that An outer ring end of the guide sleeve (81) is provided with a ramp groove (811) around itself.

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