Drilling positioning tool

Abstract

The utility model discloses a drilling positioning tool, including mounting seat and positioning assembly, and positioning assembly includes locating shaft, limit knob and guide drill bushing, and locating shaft is located on mounting seat and is used for setting through the pin hole of work piece to be drilled, and the limit step of abutting with work piece to be drilled is seted up on locating shaft, and limit knob is seted up on locating shaft and is located work piece to be drilled one side of back to limit step, and the drill bit guide hole is seted up on locating shaft, and the center axis of drill bit guide hole sets through the center point of pin hole, and guide drill bushing sets up on mounting seat and is seted up with drill bit guide hole and is opposite, limit knob and limit step cooperate and restrict the displacement of work piece to be drilled, and guide drill bushing plays the role of guiding drilling path, makes the drill bit can keep vertical downward drilling path, and guide drill bushing and drill bit guide hole are opposite, and drill bit guide hole is crossed by drill bit to accurately position drilling position and guide drilling path, and the drilling precision and drilling efficiency are improved greatly, and the processing quality is improved.

Description

Technical Field

[0001] This utility model belongs to the field of drilling technology, specifically relating to a drilling positioning fixture. Background Technology

[0002] In mast-type aerial work platforms, the connecting rod is a crucial structural component connecting the lifting mechanism's mounting frame and the platform bracket. The connecting rod has pin holes and bolt holes that connect to the pin holes. During assembly, both ends of the pin must pass through the pin holes of the two connecting rods respectively. Then, connecting bolts are used to pass through the bolt holes and the pin holes to fix the pins in place. The assembly precision requirements for the connecting bolts are high. When drilling the bolt holes, they must be located on the centerline of the connecting rod's thickness direction, and the center axis of the bolt holes must coincide with the center of the pin holes. Furthermore, due to the small assembly clearance allowance and the high assembly difficulty, it often happens that the connecting bolts at both ends of the pin cannot simultaneously pass through their respective bolt holes.

[0003] Currently, bolt holes are all located and drilled manually by marking lines. Before drilling, the drill bit must be visually aligned with the marked hole center. This manual positioning is inaccurate and inefficient. Furthermore, vibration of the connecting rod during drilling can cause the drilled hole position to shift, resulting in poor machining stability. In addition, when assembling the pin onto the connecting rod, the accumulated machining errors can easily lead to assembly abnormalities. Therefore, drilling bolt holes on the connecting rod is not only time-consuming and labor-intensive, but also has low drilling positioning accuracy and a high rework rate. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a drilling positioning fixture, which aims to solve the technical problems that not only is drilling the bolt holes on the connecting rod time-consuming and laborious, but also the drilling positioning accuracy is low and the drilling rework rate is high.

[0005] To achieve the above objectives, this utility model provides a drilling positioning fixture, which includes: Mounting base; The positioning assembly includes a positioning shaft, a limiting knob, and a guide drill sleeve. The positioning shaft is mounted on a mounting base and is configured to pass through a pin hole in the workpiece to be drilled. A limiting step is provided on the positioning shaft to abut against the workpiece to be drilled. The limiting knob is sleeved on the positioning shaft and located on the side of the workpiece to be drilled away from the limiting step. A drill guide hole is provided on the positioning shaft, and the central axis of the drill guide hole passes through the center point of the pin hole. The guide drill sleeve is mounted on the mounting base and communicates with the drill guide hole.

[0006] In this embodiment of the utility model, the mounting base includes a base plate and a mounting bracket. The mounting bracket includes a mounting vertical plate and a mounting horizontal plate. The mounting vertical plate is disposed on the base plate, and the positioning shaft passes through the mounting vertical plate. The mounting horizontal plate is disposed at the upper end of the mounting vertical plate, and the guide drill sleeve passes through the mounting horizontal plate.

[0007] In this embodiment of the utility model, the positioning shaft includes a flat shaft section, a limiting section, and a positioning section. A flat shaft hole adapted to the shape of the flat shaft section is provided on the mounting plate. The flat shaft section is installed in the flat shaft hole. One end of the limiting section is connected to the flat shaft section, and the other end of the limiting section is connected to the positioning section. A limiting step is formed between the limiting section and the positioning section. The positioning section is used to pass through the pin hole. A limiting knob is sleeved on the end of the positioning section away from the limiting section, and a drill bit guide hole is opened on the positioning section.

[0008] In this embodiment of the utility model, the positioning section includes a positioning part and a connecting part. One end of the positioning part is connected to the limiting section, and the other end of the positioning part is connected to the connecting part. A limiting step is formed between the limiting section and the positioning part. The drill bit guide hole is opened on the positioning part. A stop step is formed between the positioning part and the connecting part. The limiting knob is threadedly connected to the connecting part and abuts against the stop step.

[0009] In this embodiment of the utility model, a support block is provided on the base plate, and a support groove for placing the limiting segment is provided on the support block, and the support groove is V-shaped or U-shaped.

[0010] In this embodiment of the utility model, a mounting slot is provided on the mounting plate, and a flat shaft hole is provided on the bottom wall of the mounting slot. One end of the limiting section connected to the flat shaft section is engaged in the mounting slot.

[0011] In this embodiment of the utility model, the mounting bracket further includes a stop block and a mounting fastener. The stop block is located on the side of the mounting plate facing away from the limiting section, and a mounting hole is provided at the end of the flat shaft section away from the limiting section. The mounting fastener passes through the stop block and is threadedly connected to the mounting hole.

[0012] In this embodiment of the utility model, the number of mounting brackets is set to two, and the two mounting brackets are arranged at intervals along the length direction of the base plate. The number of positioning components is the same as the number of mounting brackets and is arranged in a one-to-one correspondence.

[0013] In this embodiment of the utility model, the drilling positioning fixture further includes a clamping assembly, which includes a support block, a mounting block, and a clamping plate. The support block is disposed on the mounting base and is used to support the rod part of the workpiece to be drilled. The mounting block is disposed on one side of the support block. The clamping plate is rotatably disposed on the mounting block and is used to abut against the upper side of the rod part.

[0014] In this embodiment of the utility model, a pad is provided on the mounting base. The pad is used to support the rod head of the workpiece to be drilled, and the pin hole is opened on the rod head.

[0015] Through the above technical solution, the drilling positioning fixture provided by this utility model embodiment has the following beneficial effects: In the technical solution of this utility model, the limiting knob and the limiting step cooperate to limit the displacement of the workpiece to be drilled, thereby stably limiting the workpiece to be drilled on the positioning shaft. When the workpiece to be drilled is being positioned and drilled, the drill bit passes through the guide drill sleeve. The guide drill sleeve guides the drilling path, ensuring that the drill bit maintains a vertically downward drilling path and preventing the drill bit from deviating and causing the drilling position to shift. The guide drill sleeve is connected to the drill bit guide hole, allowing the drill bit to pass through the drill bit guide hole and the workpiece to be drilled for drilling operations. The drill bit guide hole allows the drill bit to pass through to accurately position the drilling position and guide the drilling path, realizing integrated processing of workpiece positioning and drilling. This avoids the low positioning accuracy and time-consuming and laborious drilling caused by manual scribing, and effectively prevents the workpiece to be drilled from vibrating and shifting during the drilling process, greatly improving drilling accuracy and efficiency, and enhancing processing quality.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is an exploded structural diagram of a drilling positioning fixture and a workpiece to be drilled according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the assembly structure of a drilling positioning fixture and a workpiece to be drilled according to an embodiment of the present invention. Figure 3 This is a partial structural schematic diagram of a drilling positioning fixture and a workpiece to be drilled according to an embodiment of the present invention; Figure 4 This is a cross-sectional structural diagram of a drilling positioning fixture and a workpiece to be drilled according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation bracket and positioning component in a drilling positioning fixture according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the mounting bracket in the drilling positioning fixture according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the positioning shaft in a drilling positioning fixture according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the assembly structure of a workpiece to be drilled according to an embodiment of the present invention; Figure 9 This is a partial structural schematic diagram of a workpiece to be drilled according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] The drilling positioning fixture of this utility model is described below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown, this utility model provides a drilling positioning fixture, which includes a mounting base 10 and a positioning component. The positioning component includes a positioning shaft 20, a limiting knob 30, and a guide drill sleeve 40. The positioning shaft 20 is mounted on the mounting base 10 and is used to pass through the pin hole 201 of the workpiece 200 to be drilled. The positioning shaft 20 has a limiting step 21 that abuts against the workpiece 200 to be drilled. The limiting knob 30 is sleeved on the positioning shaft 20 and is located on the side of the workpiece 200 to be drilled away from the limiting step 21. The positioning shaft 20 has a drill bit guide hole 22. The central axis of the drill bit guide hole 22 passes through the center point of the pin hole 201. The guide drill sleeve 40 is mounted on the mounting base 10 and communicates with the drill bit guide hole 22.

[0022] It should be noted that the drilling positioning fixture of this utility model can be used in drilling operations to position the workpiece to be drilled, so as to facilitate drilling operations on the workpiece. For example... Figure 8 and Figure 9 As shown, a pin hole 201 is provided on the workpiece 200 to be drilled. The drilling operation involves opening a bolt hole on the hole wall of the pin hole 201, through which the central axis passes. The bolt hole is used for the connecting bolt 401 to pass through in order to fix the pin 400 in the pin hole 201. It can be understood that this utility model does not limit the type or use of the workpiece 200 to be drilled. As long as the workpiece to be drilled has a pin hole 201 and needs to be fixed by the connecting bolt 401, it should be within the protection scope of this application. This utility model embodiment only takes the connecting rod in the aerial work machinery as an example to illustrate the workpiece 200 to be drilled. The connecting rod is used to connect the lifting mechanism mounting frame and the platform bracket. The connecting rod includes a rod body 202 and a rod head 203. The rod head 203 is located at one end of the rod body 202 and has a pin hole 201 for the pin 400 to pass through. The drilling positioning fixture of this utility model can position the connecting rod to facilitate drilling.

[0023] Specifically, one end of the positioning shaft 20 is mounted on the mounting base 10. The positioning shaft 20 has a limiting step 21 and a drill bit guide hole 22. The other end of the positioning shaft 20 is used to pass through the pin hole 201 of the workpiece 200 to be drilled, so that the workpiece 200 to be drilled is sleeved on the positioning shaft 20 and abuts against the limiting step 21. When the positioning shaft 20 passes through the pin hole 201, the limiting knob 30 is sleeved on the positioning shaft 20 and abuts against the workpiece 200 to be drilled, so that the limiting knob 30 and the limiting step 21 cooperate to limit the displacement of the workpiece 200 to be drilled, thereby stably limiting the drill rod workpiece on the positioning shaft 20. When the positioning shaft 20 passes through the pin hole 201, the central axis of the drill bit guide hole 22 passes through the center point of the pin hole 201. The guide drill sleeve 40 is mounted on the mounting base 10, and the central axis of the guide drill sleeve 40 coincides with the central axis of the drill bit guide hole 22.

[0024] When performing positioning drilling on the workpiece 200, the drill bit 300 passes through the guide drill sleeve 40. The guide drill sleeve 40 guides the drilling path, ensuring that the drill bit 300 maintains a vertically downward drilling path and preventing the drill bit 300 from deviating and causing the drilling position to shift. The guide drill sleeve 40 is connected to the drill bit guide hole 22, allowing the drill bit 300 to pass through the drill bit guide hole 22 and the workpiece 200 to be drilled for drilling operations. The drill bit guide hole 22 allows the drill bit 300 to pass through to accurately position the drilling position and guide the drilling path, realizing integrated positioning and drilling of the workpiece 200. This avoids the low positioning accuracy and time-consuming and laborious drilling caused by manual scribing, and effectively prevents the workpiece 200 from vibrating and shifting during the drilling process, greatly improving drilling accuracy and efficiency, and enhancing processing quality.

[0025] In this embodiment of the utility model, the mounting base 10 includes a base plate 11 and a mounting bracket 12. The mounting bracket 12 includes a mounting vertical plate 121 and a mounting horizontal plate 122. The mounting vertical plate 121 is disposed on the base plate 11, and the positioning shaft 20 passes through the mounting vertical plate 121. The mounting horizontal plate 122 is disposed at the upper end of the mounting vertical plate 121, and the guide drill sleeve 40 passes through the mounting horizontal plate 122.

[0026] like Figures 3 to 6As shown, the mounting plate 121 extends vertically and is mounted on the base plate 11, while the mounting horizontal plate 122 extends horizontally and is mounted on the upper end of the mounting plate 121. The base plate 11 is used to place the workpiece 200 to be drilled for stable support. One end of the positioning shaft 20 passes through the mounting plate 121, and the other end of the positioning shaft 20 passes through the pin hole 201, so that the limiting step 21 abuts against the workpiece 200. The limiting knob 30 is located on the side of the workpiece 200 facing away from the limiting step 21 and abuts against the workpiece 200, so that the limiting knob 30 and the limiting step 21 cooperate to limit the displacement of the workpiece 200, achieving precise positioning. The workpiece 200 to be drilled is effectively prevented from shifting. The guide drill sleeve 40 passes through the mounting plate 122 and communicates with the drill guide hole 22 on the positioning shaft 20. Both the guide drill sleeve 40 and the drill guide hole 22 can guide the drilling path of the drill bit 300, effectively preventing the drill bit 300 from deflecting and ensuring that the diameter of the drilling path coincides with that of the pin hole 201, thus improving drilling accuracy and ease of drilling. Furthermore, the guide drill sleeve 40 extends vertically and passes through the mounting plate 122, allowing the drill bit 300 to move downward from above the mounting plate 122 and drill, making it easier to align the drill bit 300 with the guide drill sleeve 40, further improving drilling ease of drilling.

[0027] In this embodiment of the utility model, the positioning shaft 20 includes a flat shaft section 23, a limiting section 24, and a positioning section 25. The mounting plate 121 has a flat shaft hole 1211 that matches the shape of the flat shaft section 23. The flat shaft section 23 is installed in the flat shaft hole 1211. One end of the limiting section 24 is connected to the flat shaft section 23, and the other end of the limiting section 24 is connected to the positioning section 25. A limiting step 21 is formed between the limiting section 24 and the positioning section 25. The positioning section 25 is used to pass through the pin hole 201. The limiting knob 30 is sleeved on the end of the positioning section 25 away from the limiting section 24, and the drill bit guide hole 22 is opened on the positioning section 25.

[0028] like Figures 4 to 7 As shown, the positioning shaft 20 includes a flat shaft section 23, a limiting section 24, and a mounting section connected in sequence. The flat shaft section 23 has at least one positioning plane. A flat shaft hole 1211 is provided on the mounting plate 121. The shape of the flat shaft hole 1211 is adapted to the shape of the flat shaft section 23 for positioning and installation of the flat shaft section 23, preventing the flat shaft section 23 from driving the positioning section 25 to rotate relative to the mounting plate 122 through the limiting section 24. This ensures that the drill guide hole 22 on the positioning section 25 can be kept in the vertical direction communicating with the guide drill sleeve 40, further preventing drilling position deviation and improving drilling accuracy. In addition, a limiting step 21 is formed between the limiting section 24 and the positioning section 25 to abut against the workpiece 200 to be drilled. The limiting knob 30 is connected to the positioning section 25 and cooperates with the limiting step 21 to limit the workpiece 200 to be drilled, improving the stability of drilling.

[0029] Furthermore, in a preferred embodiment of this utility model, the flat shaft segment 23 has two positioning planes arranged opposite to each other, and the flat shaft segment 23 passes through and is engaged in the flat shaft hole 1211. The flat shaft hole 1211 and the flat shaft segment 23 cooperate to limit the rotation of the positioning segment 25, which has high limiting reliability and further improves the positioning accuracy. In addition, the mounting plate 121, the flat shaft hole 1211, the mounting horizontal plate 122, and the through hole on the mounting horizontal plate 122 for the guide drill sleeve 40 to pass through are integrally formed, which further improves the positioning accuracy.

[0030] In this embodiment of the utility model, the positioning section 25 includes a positioning part 251 and a connecting part 252. One end of the positioning part 251 is connected to the limiting section 24, and the other end of the positioning part 251 is connected to the connecting part 252. A limiting step 21 is formed between the limiting section 24 and the positioning part 251. A drill bit guide hole 22 is opened on the positioning part 251. A stop step 253 is formed between the positioning part 251 and the connecting part 252. The limiting knob 30 is threadedly connected to the connecting part 252 and abuts against the stop step 253.

[0031] like Figures 4 to 7 As shown, the positioning section 25 includes a positioning part 251 and a connecting part 252 connected in sequence. A limiting step 21 is formed between the positioning part 251 and the limiting section 24, and a stop step 253 is formed between the positioning part 251 and the connecting part 252. The positioning part 251 passes through the pin hole 201. The limiting knob 30 is connected to the connecting part 252 and cooperates with the limiting step 21 to limit the workpiece 200 to be drilled on the positioning part 251. This allows the drill bit 300 to pass through the guide drill sleeve 40 and the drill bit guide hole 22 in sequence during drilling, realizing the integrated processing of positioning and drilling of the workpiece 200. It eliminates the need for manual marking and visual inspection of the drill bit 300 for positioning, making drilling more convenient. The process is quick, efficient, and precise. Furthermore, the connecting part 252 has external threads, and the limiting knob 30 has internal threads, allowing the limiting knob 30 to be threaded onto the connecting part 252. This facilitates quick and easy assembly and disassembly of the limiting knob 30, further improving drilling efficiency. The stop step 253 abuts against the limiting knob 30 to limit its displacement, preventing excessive pressure on the workpiece 200 during drilling. This ensures stable and reliable positioning. Additionally, the limiting knob 30, when tightened, abuts against the workpiece 200, effectively preventing vibration and displacement of the workpiece 200 during drilling, significantly improving drilling accuracy and efficiency, and enhancing processing quality.

[0032] In one embodiment of this utility model, a support block 50 is provided on the base plate 11, and a support groove 51 for placing the limiting segment 24 is formed on the support block 50, and the support groove 51 is V-shaped. Figure 3 and Figure 6As shown, the support block 50 is disposed on the base plate 11 and located below the limiting section 24. The support block 50 has a V-shaped support groove 51. The groove wall of the support groove 51 abuts against the limiting section 24 to stably support the limiting section 24, effectively preventing the limiting section 24 from bending downward under force and deforming during drilling, thus improving support stability and drilling reliability. Furthermore, the V-shaped support groove 51 has two oppositely arranged inclined groove walls. The limiting section 24 is supported on the inclined groove walls of the support groove 51, so that the limiting section 24 can always tend to move towards the middle of the support groove 51, thereby limiting the shaking and displacement of the limiting section 24, reducing the vibration amplitude of the limiting section 24, and further improving drilling stability.

[0033] In another embodiment of this utility model, a support block 50 is provided on the base plate 11, and a support groove 51 for placing the limiting section 24 is formed on the support block 50, and the support groove 51 is U-shaped. Specifically, the support block 50 is provided on the base plate 11 and located below the limiting section 24. The support block 50 has a U-shaped support groove 51, and the groove wall of the support groove 51 abuts against the limiting section 24 to stably support the limiting section 24. This effectively prevents the limiting section 24 from bending downward under force and deforming during drilling, thereby improving support stability and drilling reliability. Furthermore, the U-shaped support groove 51 is adapted to the contour of the limiting section 24, which helps to limit the shaking and displacement of the limiting section 24, reduces the vibration amplitude of the limiting section 24, and further improves drilling stability.

[0034] In this embodiment of the utility model, a mounting slot 1212 is provided on the mounting plate 121, and a flat shaft hole 1211 is formed on the bottom wall of the mounting slot 1212. The end of the limiting segment 24 connected to the flat shaft segment 23 is engaged in the mounting slot 1212. Figure 4 and Figure 6 As shown, the mounting plate 121 has a mounting groove 1212 on the side facing the limiting section 24, into which the limiting section 24 extends. The bottom wall of the mounting groove 1212 has a flat shaft hole 1211 for the flat shaft section 23 to pass through. The limiting section 24 is engaged in the mounting groove 1212 to position and install the limiting section 24 on the mounting plate 121, ensuring that the drill bit guide hole 22 on the positioning section 25 can communicate with the guide drill sleeve 40, thus improving the positioning accuracy.

[0035] In this embodiment of the utility model, the mounting bracket 12 further includes a stop block 123 and a mounting fastener 124. The stop block 123 is located on the side of the mounting plate 121 facing away from the limiting section 24, and the flat shaft section 23 has a mounting hole 231 at the end away from the limiting section 24. The mounting fastener 124 passes through the stop block 123 and is threadedly connected to the mounting hole 231.

[0036] like Figure 4 and Figure 5As shown, the flat shaft section 23 passes through the flat shaft hole 1211, and the flat shaft section 23 has a mounting hole 231 aligned with its extension direction. A stop block 123 is provided on one side of the mounting plate 121. The stop block 123 abuts against the mounting plate 121 and the flat shaft section 23 to restrict the movement of the flat shaft section 23 and prevent it from loosening. The mounting fastener 124 passes through the stop block 123 and connects to the mounting hole 231 to fix the stop block 123 to the mounting plate 121, improving the reliability of the limit. Furthermore, the mounting fastener 124 is threadedly connected to the mounting hole 231, offering the advantage of convenient and quick assembly. It is understood that the mounting fastener 124 can be any bolt, screw, threaded rod, or other fastener with external threads found in the prior art. The mounting hole 231 has an internal thread that connects to the mounting fastener 124, further improving assembly convenience.

[0037] In this embodiment of the utility model, the number of mounting brackets 12 is set to two, and the two mounting brackets 12 are arranged at intervals along the length direction of the base plate 11. The number of positioning components is the same as the number of mounting brackets 12 and is arranged in a one-to-one correspondence.

[0038] like Figure 1 and Figure 2 As shown, the workpiece 200 to be drilled includes a rod body 202 and two rod heads 203. The two rod heads 203 are respectively located at both ends of the rod body 202. The length direction of the base plate 11 is consistent with the length direction of the workpiece 200 to be drilled and is used to place the workpiece 200 to be drilled for stable support. The base plate 11 is provided with two mounting brackets 12, and each mounting bracket 12 is respectively provided with a positioning component, so that each positioning component can position and install one rod head 203. This not only enables quick and accurate positioning of the drilling position, but also enables simultaneous drilling of the two rod heads 203, improving the consistency of machining accuracy. It eliminates the step of manually scribing the two rod heads 203 separately and then transferring them to the drilling machine for drilling, simplifying the drilling steps, shortening the dimensional chain length during the machining process, reducing the accumulation of machining tolerances, thereby reducing the assembly difficulty of the pin 400 and improving the assembly reliability.

[0039] In this embodiment of the utility model, the drilling positioning fixture further includes a clamping assembly 60, which includes a support block 61, a mounting block 62, and a clamping plate 63. The support block 61 is disposed on the mounting base 10 and is used to support the rod portion 202 of the workpiece 200 to be drilled. The mounting block 62 is disposed on one side of the support block 61. The clamping plate 63 is rotatably disposed on the mounting block 62 and is used to abut against the upper side of the rod portion 202.

[0040] like Figures 1 to 4As shown, the support block 61 is mounted on the base plate 11 and supported on the lower side of the rod body 202 to improve the placement stability of the workpiece 200 to be drilled. A mounting block 62 is provided on one side of the support block 61, and a clamping plate 63 that can swing relative to the mounting block 62 is provided at the upper end of the mounting block 62. When the positioning shaft 20 passes through the pin hole 201 and the rod body 202 is supported on the support block 61, the clamping plate 63 is swung to the upper side of the rod body 202 so that the clamping plate 63 presses the rod body 202 onto the support block 61, which limits the vibration amplitude of the rod body 202, effectively prevents the drilling position from shifting due to vibration during the drilling process, and further improves the drilling stability.

[0041] Furthermore, such as Figures 1 to 4 As shown, the clamping assembly 60 also includes connecting fasteners. The clamping plate 63 is detachably connected to the mounting block 62 via the connecting fasteners. When the rod body 202 is placed on the support block 61, the connecting fasteners can be loosened to allow the clamping plate 63 to be rotated, preventing the clamping plate 63 from interfering with the rod body 202. When the rod body 202 is in place, the clamping plate 63 is rotated to the upper side of the rod body 202 and the connecting fasteners are tightened so that the clamping plate 63 clamps the rod body 202, ensuring stable and reliable positioning and further improving the stability of drilling. In addition, the clamping assembly 60 is provided in multiples, and the multiple clamping assemblies 60 are spaced apart on the base plate 11 along the length direction of the base plate 11 to further improve the clamping reliability.

[0042] In this embodiment of the utility model, the mounting base 10 is provided with a pad 125, which is used to support the rod head 203 of the workpiece 200 to be drilled, and the pin hole 201 is formed on the rod head 203. Figures 1 to 4 As shown, the pad 125 is placed on the base plate 11 and supported on the lower side of the rod head 203. The pad 125 and the positioning shaft 20 are offset in the vertical direction. The pad 125 is sandwiched between the rod head 203 and the base plate 11 to increase the distance between the pin hole 201 and the base plate 11, thereby avoiding the drill bit 300 and preventing the drill bit 300 from contacting the base plate 11 and causing damage to the base plate 11. The structural design is reasonable.

[0043] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drilling positioning fixture, characterized in that, The drilling positioning fixture includes: Mounting base (10); The positioning assembly includes a positioning shaft (20), a limiting knob (30), and a guide drill sleeve (40). The positioning shaft (20) is mounted on the mounting base (10) and is configured to pass through the pin hole (201) of the workpiece (200) to be drilled. The positioning shaft (20) has a limiting step (21) that abuts against the workpiece (200) to be drilled. The limiting knob (30) is sleeved on the positioning shaft (20) and located on the side of the workpiece (200) to be drilled away from the limiting step (21). The positioning shaft (20) has a drill bit guide hole (22). The central axis of the drill bit guide hole (22) passes through the center point of the pin hole (201). The guide drill sleeve (40) is mounted on the mounting base (10) and communicates with the drill bit guide hole (22).

2. The drilling positioning fixture according to claim 1, characterized in that, The mounting base (10) includes a base plate (11) and a mounting bracket (12). The mounting bracket (12) includes a mounting vertical plate (121) and a mounting horizontal plate (122). The mounting vertical plate (121) is disposed on the base plate (11), and the positioning shaft (20) passes through the mounting vertical plate (121). The mounting horizontal plate (122) is disposed at the upper end of the mounting vertical plate (121), and the guide drill sleeve (40) passes through the mounting horizontal plate (122).

3. The drilling positioning fixture according to claim 2, characterized in that, The positioning shaft (20) includes a flat shaft section (23), a limiting section (24), and a positioning section (25). The mounting plate (121) has a flat shaft hole (1211) that matches the shape of the flat shaft section (23). The flat shaft section (23) is installed in the flat shaft hole (1211). One end of the limiting section (24) is connected to the flat shaft section (23), and the other end of the limiting section (24) is connected to the positioning section (25). A limiting step (21) is formed between the limiting section (24) and the positioning section (25). The positioning section (25) is used to pass through the pin hole (201). The limiting knob (30) is sleeved on the end of the positioning section (25) away from the limiting section (24), and the drill bit guide hole (22) is opened on the positioning section (25).

4. The drilling positioning fixture according to claim 3, characterized in that, The positioning section (25) includes a positioning part (251) and a connecting part (252). One end of the positioning part (251) is connected to the limiting section (24), and the other end of the positioning part (251) is connected to the connecting part (252). A limiting step (21) is formed between the limiting section (24) and the positioning part (251). The drill bit guide hole (22) is opened on the positioning part (251). A stop step (253) is formed between the positioning part (251) and the connecting part (252). The limiting knob (30) is threadedly connected to the connecting part (252) and abuts against the stop step (253).

5. The drilling positioning fixture according to claim 3, characterized in that, The base plate (11) is provided with a support block (50), and the support block (50) is provided with a support groove (51) for placing the limiting section (24), and the support groove (51) is V-shaped or U-shaped.

6. The drilling positioning fixture according to claim 3, characterized in that, The mounting plate (121) is provided with a mounting slot (1212), the flat shaft hole (1211) is provided on the bottom wall of the mounting slot (1212), and the end of the limiting section (24) connected to the flat shaft section (23) is engaged in the mounting slot (1212).

7. The drilling positioning fixture according to claim 3, characterized in that, The mounting bracket (12) further includes a stop block (123) and a mounting fastener (124). The stop block (123) is located on the side of the mounting plate (121) facing away from the limiting section (24), and the flat shaft section (23) has a mounting hole (231) at one end away from the limiting section (24). The mounting fastener (124) passes through the stop block (123) and is threadedly connected to the mounting hole (231).

8. The drilling positioning fixture according to claim 2, characterized in that, The number of mounting brackets (12) is set to two, and the two mounting brackets (12) are spaced apart along the length direction of the base plate (11). The number of positioning components is the same as the number of mounting brackets (12) and they are set in a one-to-one correspondence.

9. The drilling positioning fixture according to any one of claims 1 to 8, characterized in that, The drilling positioning fixture also includes a clamping assembly (60), which includes a support block (61), a mounting block (62), and a clamping plate (63). The support block (61) is disposed on the mounting base (10) and is used to support the rod part (202) of the workpiece (200) to be drilled. The mounting block (62) is disposed on one side of the support block (61). The clamping plate (63) is rotatably disposed on the mounting block (62) and is used to abut against the upper side of the rod part (202).

10. The drilling positioning fixture according to any one of claims 1 to 8, characterized in that, The mounting base (10) is provided with a pad (125), which is used to support the rod head (203) of the workpiece (200) to be drilled, and the pin hole (201) is opened on the rod head (203).

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