A positioning drilling tool

Abstract

The utility model discloses a positioning drilling frock, including drill jig, ranging assembly and fixed component. A plurality of die holes of arranging according to set size have on drill jig, and the die hole is assembled with the drill bushing, and the lower surface of drill jig has the support part of protruding downward, which is used for contacting with the upper surface of frock clamp assembly table bottom plate, ranging assembly can determine the position of drill jig on frock clamp assembly table bottom plate, and fixed component can detachably fix drill jig on the upper surface of frock clamp assembly table bottom plate. When the new vehicle model is introduced or the technical improvement project needs to add new clamp base connecting component on frock clamp assembly table bottom plate, the positioning drilling frock can be used, and the mounting hole position of required quantity and set position can be quickly and accurately processed on frock clamp assembly table bottom plate, breaking the traditional drilling process of pure manual scribing combined with experience real allocation, realizing the standardization, flexibility and generalization of drilling processing size precision.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a positioning drilling fixture. Background Technology

[0002] In the automotive manufacturing industry, when a new model is introduced or a production line is upgraded, it is often necessary to add or replace new fixture support connection components on the existing tooling fixture assembly platform base.

[0003] like Figure 1 As shown, the bottom surface of the fixture support base connecting component is provided with two downward protruding positioning cylindrical pins 02 and four fixture threaded holes 01. The tooling fixture assembly base plate is provided with two positioning holes and four base plate threaded holes corresponding to each fixture support base connecting component. During assembly, the positioning cylindrical pins 02 are first engaged with the positioning holes to determine the position of the fixture support base connecting component on the tooling fixture assembly base plate. At this point, the fixture threaded holes 01 and the base plate threaded holes correspond one-to-one. Then, the fixture threaded holes 01 and the base plate threaded holes are fixed together with bolts, completing the assembly process of the fixture support base connecting component on the tooling fixture assembly base plate.

[0004] When adding or replacing new fixture support connection components on the existing tooling fixture assembly base plate due to adjustments in the shape (size and structure) of the new product, it is necessary to re-machine positioning holes and base plate threaded holes on the tooling fixture assembly base plate to match the new fixture support connection components.

[0005] Currently, the common method for machining positioning holes and threaded holes on the base plate of tooling fixtures is to use manual marking combined with manual drilling. However, this method has many drawbacks: the accuracy of manual marking is difficult to guarantee, with an error range of ±0.5 to 1 mm; the perpendicularity of the drill bit to the base plate cannot be ensured during manual drilling, and the vibration and shaking generated during processing can cause the hole wall to form a trumpet-shaped deformation that is larger at the top and smaller at the bottom; the roundness and positional dimensional accuracy of the holes can deviate by as much as ±1.5 mm, resulting in an extremely low rate of qualified machining quality. These problems not only cause a large amount of rework and adjustments, but also seriously slow down the progress of the entire model changeover and modification project.

[0006] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a positioning drilling tool that can improve drilling accuracy.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A positioning drilling fixture, comprising:

[0010] A drill jig has a plurality of die holes arranged in a set size, and a drill sleeve is fitted inside the die holes. The lower surface of the drill jig has a support portion that protrudes downward for contacting the upper surface of the tooling fixture assembly base plate.

[0011] The ranging component can determine the position of the drill jig on the base plate of the tooling fixture assembly; and

[0012] The fixing component allows the drill jig to be detachably fixed to the upper surface of the tooling fixture assembly base plate.

[0013] A further technical solution is that the number of the support parts is four, and the four support parts are arranged in a rectangular array with the center of the drill jig as the center.

[0014] A further technical solution is that the bottom surface of the support is a finely machined surface with a surface roughness of less than Ra0.8μm.

[0015] A further technical solution is that the total area of ​​the support part in contact with the upper surface of the tooling fixture assembly base plate does not exceed 30% of the total area of ​​the lower surface of the drill jig.

[0016] A further technical solution is that the fixing component includes:

[0017] The first locking hole is formed vertically through the support portion of the drill jig; and

[0018] The first magnetic component is assembled in the first locking hole, and the lower end of the first magnetic component can be attracted and fixed to the bottom plate of the tooling fixture assembly platform.

[0019] A further technical solution is that the first locking hole is a round hole, and the inner surface of the first locking hole has an internal thread;

[0020] The first magnetic suction component is a cylinder adapted to the first locking hole. The outer surface of the first magnetic suction component has external threads, and the top end of the first magnetic suction component has an operating end for screwing.

[0021] The first magnetic suction component is threaded into the first locking hole.

[0022] A further technical solution is that the operating end is a tool mounting groove located on the top surface of the first magnetic suction component;

[0023] Alternatively, the operating end may be a polygonal prism protruding from the first locking hole.

[0024] A further technical solution is that the ranging component includes a laser rangefinder, which includes a laser emitting element and a laser receiving element;

[0025] The laser emitting element is disposed on the drill jig, and the laser emitting element is capable of emitting bidirectional laser along the transverse and longitudinal directions of the tooling fixture assembly base plate;

[0026] The laser receiving element includes two laser receiving elements, which can move and lock along the horizontal and vertical sides of the tooling fixture assembly platform base plate, respectively. The two laser receiving elements are used to receive bidirectional lasers emitted by the laser emitting element.

[0027] A further technical solution is that the laser receiving element is fixed on a movable support, and the movable support is provided with a second magnetic attraction component that can be adsorbed and fixed to the bottom plate of the tooling fixture assembly platform.

[0028] A further technical solution is that a reference groove is provided at the edge of the upper surface of the tooling fixture assembly platform base plate, along both the width and length directions of the tooling fixture assembly platform base plate.

[0029] The laser receiving element is fixed on a movable support, which has a protrusion that slides into the reference groove.

[0030] The beneficial effects of adopting the above technical solution are as follows:

[0031] When new vehicle models are introduced or technical upgrade projects require the addition of new fixture support connection components to the base plate of the tooling fixture assembly platform, this positioning drilling fixture can be used to quickly and accurately machine the required number and positions of mounting holes on the base plate. This breaks away from the traditional drilling process that relies on purely manual marking combined with experience-based fitting, achieving standardization, flexibility, and universality in drilling dimensional accuracy. Verified in several projects, the mounting holes machined on the base plate of the tooling fixture assembly platform using this positioning drilling fixture have a 100% first-pass quality qualification rate, significantly improving work efficiency and project changeover efficiency.

[0032] The upper support of the drill jig protrudes downward from the lower end face of the drill jig, reducing the contact area between the drill jig and the base plate of the tooling fixture, and lowering the machining requirements for the bottom surface accuracy of the drill jig. At the same time, it creates a certain space between the lower end face of the drill jig and the upper end face of the base plate of the tooling fixture. This space facilitates the discharge of metal chips during drilling and avoids the huge lateral pressure caused by metal chip blockage, which can lead to drill bit deviation and vibration (tool deflection), resulting in inaccurate hole diameter and distorted hole shape.

[0033] Moreover, the drill bushing provides rigid guiding support for the drill bit, which can constrain the drilling path and prevent the drill bit from deviating, bending or vibrating during the cutting process, thereby ensuring the straightness and perpendicularity of the hole and avoiding collisions between the drilling tool and the surrounding structure. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a schematic diagram of the structure of the clamp support connection component in the prior art;

[0036] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0037] Figure 3 This is a schematic diagram of the drill jig structure in this utility model;

[0038] Figure 4 This is a schematic diagram of the movable support in this utility model. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] When a new model is introduced or a technical upgrade project requires the addition of a new fixture support connection component 30 to the tooling fixture assembly platform base plate 20, it can be achieved by using, for example Figures 2-4 The positioning drilling fixture shown can quickly and accurately machine the required number and set positions of mounting holes on the base plate 20 of the fixture assembly platform. The mounting holes include positioning holes and base plate threaded holes. Usually, when installing a fixture support connection component 30, two positioning holes and four base plate threaded holes are required.

[0042] Example 1:

[0043] The positioning drilling fixture includes a drill jig 10, a ranging component, and a fixing component. The drill jig 10 has several die holes 110 arranged according to a set size, and drill sleeves are fitted into the die holes 110. The lower surface of the drill jig 10 has a downwardly protruding support portion 101 for contacting the upper surface of the fixture assembly base plate 20. The ranging component can determine the position of the drill jig 10 on the fixture assembly base plate 20. The fixing component can detachably fix the drill jig 10 to the upper surface of the fixture assembly base plate 20.

[0044] The drill jig 10 is a rigid structure with a preset hole layout. The thickness of the drill jig 10 can be controlled within a reasonable range to meet the rigidity requirements. The die hole 110 is a through hole that penetrates the drill jig 10. The size and arrangement of the die hole 110 are processed according to the drawing requirements. The hole spacing error is controlled within the allowable range of the process. The required positioning holes and base plate threaded holes can be machined on the tooling fixture assembly base plate 20 through the die hole 110 on the drill jig 10.

[0045] To improve the utilization rate of the drill jig 10, multiple sets of base plate threaded holes of different models can be set on one drill jig 10, so that one set of positioning drilling tooling can complete the drilling of different models of fixture support connection parts 30.

[0046] The drill bushing is a guide component nested within the die hole 110. Specifically, it can be a carbide bushing, and can be a replaceable drill bushing or a quick-change drill bushing from the prior art. The drill bushing is a rigid guide component that provides rigid guide support for the drill bit, constrains the drilling path, and prevents the drill bit from deviating, bending, or vibrating during the cutting or entry process, thereby ensuring the straightness and perpendicularity of the hole and avoiding collisions between the drilling tool and surrounding structures.

[0047] The bottom surface of the support part 101 is a raised area that has been machined into a flat surface. The support part 101 protrudes downward from the lower end surface of the drill jig 10, which reduces the contact area between the drill jig 10 and the tooling fixture base plate 20, and reduces the machining requirements for the bottom surface accuracy of the drill jig 10. At the same time, it provides a certain space between the lower end surface of the drill jig 10 and the upper end surface of the tooling fixture base plate 20. The setting of this space can facilitate the discharge of iron filings during drilling, and avoid the huge lateral pressure caused by iron filings clogging, which can lead to drill bit deviation and vibration (tool deflection phenomenon), resulting in inaccurate hole diameter and distorted hole shape.

[0048] When a new vehicle model is introduced or a technical upgrade project requires the addition of new fixture support connection components 30 to the tooling fixture assembly base plate 20, this positioning drilling fixture can be used to quickly and accurately machine the required number and positions of mounting holes on the tooling fixture assembly base plate 20. This breaks away from the traditional drilling process that relies on purely manual marking combined with experience-based fitting, achieving standardization, flexibility, and universality in drilling machining dimensional accuracy. After verification in 10 projects, the mounting holes machined on the tooling fixture assembly base plate 20 using this positioning drilling fixture achieved a 100% first-pass quality qualification rate, significantly improving work efficiency and project changeover efficiency.

[0049] Example 2:

[0050] The bottom surface of the support part 101 is a raised area that has been machined into a flat surface. It can be formed into a locally finished surface by processes such as grinding, lapping or precision milling. Specifically, the bottom surface of the support part is a finished surface with a surface roughness of less than Ra0.8μm. By reducing the micro-unevenness of the bottom surface of the support part 101, the bottom surface of the support part 101 forms a surface contact with the tooling fixture base plate 20 instead of a point contact, thereby improving the flatness of the contact between the die hole 110 and the tooling fixture base plate 20 and ensuring drilling accuracy.

[0051] Furthermore, the total area of ​​the support part 101 in contact with the upper surface of the tooling fixture assembly base plate 20 does not exceed 30% of the total area of ​​the lower surface of the drill jig 10, which can ensure stable support and reduce the processing requirements for the surface accuracy of the drill jig 10.

[0052] There are four support parts 101, which are arranged in a rectangular array with the center of the drill jig 10 as the center. When the drill jig 10 is rectangular, the support parts 101 can be distributed at the four corners of the bottom surface of the drill jig 10 to ensure the stability of the support for the drill jig 10.

[0053] During the installation of the drill jig 10, the machined surface of the top of the support 101 and the surface of the tooling fixture base plate 20 achieve a gapless fit through full-plane contact. Due to the microscopic geometric precision of the machined surface, the drill jig 10 will not experience micro-displacement caused by localized stress concentration due to rough contact surfaces when pressure is applied by the fixing components. When the drilling equipment is operating, the cutting force is evenly transmitted to the base plate through the machined surface, preventing drill bit deflection caused by localized deformation of the bottom surface of the support 101.

[0054] Example 3:

[0055] In the fixing assembly, a first locking hole 122 is provided on the support part 101 of the drill jig 10, extending vertically. To ensure the stability of the fixing, a first locking hole 122 is provided on each support part 101. A first magnetic attraction component 121 is installed in the first locking hole 122, and the lower end of the first magnetic attraction component 121 can be attracted and fixed to the tooling fixture platform base plate 20. The fixing assembly tightly attracts the drill jig 10 and the tooling fixture platform base plate 20 through magnetic force, forming a rigid connection.

[0056] The first locking hole 122 is a hole structure that completely penetrates along the thickness direction of the support portion 101. Specifically, it can be realized by machining a circular hole or a polygonal hole. This hole structure provides an installation channel for the first magnetic attraction component 121, ensuring that the axis of the first magnetic attraction component 121 is perpendicular to the bottom surface of the support portion 101. The first magnetic attraction component 121 is a component capable of generating magnetic attraction force. Specifically, it can be realized by using a permanent magnet or an electromagnet, and its shape is adapted to the inner cavity shape of the first locking hole 122. During installation, by adjusting the vertical position of the first magnetic attraction component 121, its sidewall is attracted to the drill jig 10, while its bottom end is attracted to the upper surface of the tooling fixture assembly base plate 20, thereby fixing the drill jig 10 to the upper surface of the tooling fixture assembly base plate 20.

[0057] When the magnetic force of the first magnetic attraction component 121 is large, the lower end of the first magnetic attraction component 121 can complete the adsorption without directly contacting the bottom plate 20 of the tooling fixture assembly platform, which reduces the requirements for the bottom surface accuracy of the first magnetic attraction component 121 and improves the reliability of the assembly.

[0058] The vertical installation of the first magnetic attraction component 121 avoids the positioning deviation caused by the tilt of the traditional fixing device. The magnetic attraction force generated by it is evenly distributed on the contact surface between the support part 101 and the tooling fixture platform base plate 20, suppressing the lateral vibration generated by the contact between the drill bit and the workpiece during the drilling process, ensuring that the drilling axis is consistent with the vertical direction of the bottom surface of the support part 101, and avoiding hole position deviation and horn hole defects.

[0059] Furthermore, during drilling, the drill jig 10 can initially be secured by four first magnetic suction components 121. After the two positioning holes are machined, positioning pins can be inserted into the positioning holes for joint fixation before completing the machining of the remaining four base plate bolt holes, further ensuring the stability of the drill jig 10 during drilling. Alternatively, after machining two to four base plate bolt holes, the drill sleeve on the drill jig 10 can be replaced, and bolts can be used to position and tighten the base plate bolt holes in one go, allowing for the machining of the positioning holes and the remaining base plate bolt holes.

[0060] Example 4:

[0061] The first locking hole 122 is a polygonal hole, and the inner surface of the positioning hole is smooth. The first magnetic suction member 121 can be designed as a polygonal prism that fits the first locking hole 122. The polygonal fit can prevent the first magnetic suction member from rotating relative to the drill jig 10, improving the stability of the magnetic suction. Furthermore, the first magnetic suction member 121 and the first locking hole 122 adopt an interference fit to eliminate radial clearance, further preventing relative displacement caused by vibration during drilling. In this structure, the first magnetic suction member 121 is preferably an electromagnet. By energizing the first magnetic suction member 121, it becomes magnetic, which can fix the drill jig 10 on the tooling fixture base plate 20. After drilling is completed, by de-energizing the first magnetic suction member 121, it loses its magnetism, allowing the drill jig 10 to move.

[0062] Example 5:

[0063] The first locking hole 122 is a circular hole, and its inner surface has an internal thread. The first magnetic member 121 is a cylinder adapted to the first locking hole 122, and its outer surface has an external thread. The top end of the first magnetic member 121 has an operating end for screwing. The first magnetic member 121 is threadedly connected to the first locking hole 122. In this structure, the first magnetic member 121 is preferably a permanent magnet.

[0064] The operating end can be a tool mounting recess on the top surface of the first magnetic suction component. The tool mounting recess refers to a groove structure opened on the top surface, specifically a straight or cross-shaped groove that matches the geometry of the tool (flathead screwdriver or Phillips screwdriver) handle. The groove sidewalls form a circumferential constraint on the tool handle. Specifically, when the tool handle is inserted into the tool mounting recess, the groove sidewalls and the contact surface with the tool handle create a geometric limiting effect, forcing the tool axis to coincide with the axis of the first magnetic suction component 121. During the installation of the first magnetic suction component 121, the tool applies a positive or negative rotational force along the groove limiting direction, driving the first magnetic suction component 121 to move up and down, causing the drill jig 10 to move downwards and magnetically fix to the tooling fixture base plate 20, or to move upwards and release the fixation.

[0065] The operating end can also be a polygonal prism protruding from the first locking hole, which is held by a tool (wrench) and screwed on. The polygonal prism is preferably a hexagonal prism, which can be operated using a hexagonal wrench.

[0066] The first locking hole 122 is a circular hole structure that can geometrically match the cylindrical first magnetic member 121, eliminating radial clearance. The engagement of the internal and external threads forms a mechanical locking structure. By rotating, the first magnetic member 121 is screwed into the first locking hole 122. The helix angle of the threaded pair generates an axial preload, creating a rigid connection between the first magnetic member 121 and the first locking hole 122. The frictional force generated by the threaded connection and the axial preload together resist the multidimensional vibration loads during drilling operations, preventing the first magnetic member 121 from axially shifting or circumferentially deflecting.

[0067] The fixing components of the positioning drilling fixture employ a threaded magnetic fixing method to solve the problem of displacement of the magnetic suction component due to vibration under dynamic working conditions, ensuring the stability of the positioning reference of the drill bushing during drilling. The threaded connection structure enhances the torsional resistance of the magnetic suction component, avoiding positioning failure caused by drill bit wobble.

[0068] Example 6:

[0069] Preferably, the length of the first magnetic member 121 exceeds the depth of the first locking hole 122, so that after the first magnetic member 121 is screwed in, it can completely fill the first locking hole 122, avoiding stress concentration caused by partial suspension of the first locking hole 122. Moreover, after assembly, the upper end of the first magnetic member 121 protrudes from the first locking hole 122, which also facilitates the unscrewing of the first magnetic member 121 from the first locking hole 122.

[0070] Example 7:

[0071] The ranging component includes a laser rangefinder, which comprises a laser emitting element 131 and a laser receiving element. The laser emitting element 131 is mounted on the drill jig 10 and is capable of emitting bidirectional laser light along both the transverse (x-axis) and longitudinal (y-axis) directions of the fixture assembly platform base plate 20. Two laser receiving elements are included: an x-axis laser receiving element 132A and a y-axis laser receiving element 132B. The x-axis laser receiving element 132A is capable of moving and locking along the transverse direction of the fixture assembly platform base plate 20 to receive the longitudinal laser light emitted by the laser emitting element 131 along the longitudinal direction of the fixture assembly platform base plate 20. The y-axis laser receiving element 132B is capable of moving and locking along the longitudinal direction of the fixture assembly platform base plate 20 to receive the transverse laser light emitted by the laser emitting element 131 along the transverse direction of the fixture assembly platform base plate 20.

[0072] A laser rangefinder is a device that uses a laser beam to measure distance. Specifically, it can be implemented using a semiconductor laser in conjunction with a photoelectric sensor. The distance is calculated by measuring the round-trip time difference of the laser beam, and its function is to replace manual line marking, achieving digital positioning. The bidirectional laser emission refers to the laser emitting element 131 simultaneously emitting laser beams in two orthogonal directions, horizontal and vertical, along the base plate 20 of the fixture assembly platform. This can be achieved using a beam splitter prism or a dual-emitter structure. Its function is to simultaneously establish a planar coordinate system baseline, forming a spatial positioning reference. The movable laser receiving element is a detection device that can slide along the base plate 20 of the fixture assembly platform. Its function is to adjust its position based on real-time feedback from the received laser beam, achieving coordinate calibration.

[0073] According to the design requirements of the drawings, the drill jig 10 is fixed on the base plate 20 of the tooling fixture assembly platform. Specifically, two laser receiving elements are first installed on the horizontal and vertical edges of the base plate 20, respectively. The two laser receiving elements are then fixed in their designated positions. The laser emitting element 131 emits bidirectional laser light. Once both laser receiving elements have acquired the signal, the relative coordinate relationship between the drill jig 10 and the base plate 20 is captured in real time. Based on the measured distance displayed by the laser, the drill jig 10 is adjusted to the designed coordinate position, thus determining the position of the drill jig 10 and fixing it in place. The hole position reference established on the drill jig 10, combined with the positioning reference of the drill jig 10 on the base plate 20, allows for the direct determination of the drilling position on the base plate 20, eliminating the need for manual marking.

[0074] Example 8:

[0075] At the edge of the upper surface of the tooling fixture assembly platform base plate 20, reference grooves 201 are provided along both the width and length directions of the tooling fixture assembly platform base plate 20. The laser receiving element is fixed on the movable support 133. The movable support 133 is provided with a second magnetic attraction member 134 that can be attracted and fixed to the tooling fixture assembly platform base plate 20. The movable support 133 has a protrusion 135 that slides and engages with the reference groove 201, so that the movable support 133 can move laterally or longitudinally along the reference groove 201 with the laser receiving element. When it moves into place, the movable support 133 is magnetically fixed to the tooling fixture assembly platform base plate 20 by the second magnetic attraction member 134.

[0076] Four reference slots 201 can be set on the base plate 20 of the tooling fixture assembly platform. The four reference slots 201 are rectangular and surround the edge of the base plate 20. Two reference slots 201 are set along the length direction of the base plate 20 and two reference slots 201 are set along the width direction of the base plate 20. Two laser receiving elements are selected to be set in one reference slot 201 in the length direction and one reference slot 201 in the width direction. According to the working conditions, the appropriate reference slot 201 is selected to assemble the laser receiving element to avoid the fixture support connection component 30 after installation from blocking the laser receiving element.

[0077] The second magnetic component 134 is installed in the same way as the first magnetic component 121. The movable support 133 is tightly attracted to the tooling fixture assembly platform base plate 20 by magnetic force, forming a rigid connection.

[0078] The above are merely preferred embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A positioning drilling fixture, characterized in that, include: A drill jig has a plurality of die holes arranged in a set size, and a drill sleeve is fitted inside the die holes. The lower surface of the drill jig has a support portion that protrudes downward for contacting the upper surface of the tooling fixture assembly base plate. The ranging component can determine the position of the drill jig on the base plate of the tooling fixture assembly; and The fixing component allows the drill jig to be detachably fixed to the upper surface of the tooling fixture assembly base plate.

2. The positioning drilling fixture according to claim 1, characterized in that, The number of support parts is four, and the four support parts are arranged in a rectangular array with the center of the drill jig as the center.

3. The positioning drilling fixture according to claim 1, characterized in that, The bottom surface of the support is a finely machined surface with a surface roughness of less than Ra0.8μm.

4. The positioning drilling fixture according to claim 1, characterized in that, The total area of ​​the support portion in contact with the upper surface of the tooling fixture assembly base plate shall not exceed 30% of the total area of ​​the lower surface of the drill jig.

5. The positioning drilling fixture according to claim 1, characterized in that, The fixing component includes: The first locking hole is formed vertically through the support portion of the drill jig; and The first magnetic component is assembled in the first locking hole, and the lower end of the first magnetic component can be attracted and fixed to the bottom plate of the tooling fixture assembly platform.

6. The positioning drilling fixture according to claim 5, characterized in that, The first locking hole is a round hole, and the inner surface of the first locking hole has internal threads; The first magnetic suction component is a cylinder adapted to the first locking hole. The outer surface of the first magnetic suction component has external threads, and the top end of the first magnetic suction component has an operating end for screwing. The first magnetic suction component is threaded into the first locking hole.

7. The positioning drilling fixture according to claim 6, characterized in that, The operating end is a tool mounting groove located on the top surface of the first magnetic suction component; Alternatively, the operating end may be a polygonal prism protruding from the first locking hole.

8. The positioning drilling fixture according to claim 1, characterized in that, The ranging component includes a laser rangefinder, which includes a laser emitting element and a laser receiving element. The laser emitting element is disposed on the drill jig, and the laser emitting element is capable of emitting bidirectional laser along the transverse and longitudinal directions of the tooling fixture assembly base plate; The laser receiving element includes two laser receiving elements, which can move and lock along the horizontal and vertical sides of the tooling fixture assembly platform base plate, respectively. The two laser receiving elements are used to receive bidirectional lasers emitted by the laser emitting element.

9. The positioning drilling fixture according to claim 8, characterized in that, The laser receiving element is fixed on a movable support, and the movable support is provided with a second magnetic component that can be adsorbed and fixed to the bottom plate of the tooling fixture assembly platform.

10. The positioning drilling fixture according to claim 8, characterized in that, At the edge of the upper surface of the tooling fixture assembly platform base plate, a reference groove is provided along both the width and length directions of the tooling fixture assembly platform base plate. The laser receiving element is fixed on a movable support, which has a protrusion that slides into the reference groove.

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