Hand-held nut drill jig

Abstract

The utility model discloses a handheld nut drill jig relates to the technical field of drilling, the handheld nut drill jig includes: drill jig main part, adjusting top silk and drill bushing, the working surface of drill jig main part is provided with the guide hole for placing drill bushing, the lateral wall of drill jig main part is provided with the cooperation through slot for placing adjusting top silk, the guide hole is along Z axle axial bore, the cooperation through slot is along Y axle axial slot, and the guide hole with cooperation through slot intercommunication, adjusting top silk is inserted in cooperation through slot, one end of adjusting top silk extends to the guide hole, and one end of adjusting top silk extension in the guide hole is in abutment in the lateral wall of drill bushing. Through setting adjusting top silk, realize the drill bushing locking of drill jig main part, can improve the convenience of the replacement of the drill bushing of nut drill jig, simplify the replacement operation of drill jig main part simultaneously, reduce the maintenance cost of nut drill jig.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, specifically to a handheld nut drill jig. Background Technology

[0002] In the aerospace manufacturing field, current nut drill jigs generally use carbide drill bushings, which are inserted into the drill jig holes with an interference fit. This avoids direct contact between the drill bit and the drill jig body, reducing the wear rate of the drill bit. Because the drill bushings of nut drill jigs are installed using an interference fit, the interchangeability of the drill bushings is poor, making replacement inconvenient. After disassembling the drill bushing, the guide hole needs to be recalibrated, increasing maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a handheld nut drill jig, which locks the drill sleeve of the drill jig body by setting an adjusting set screw, which can improve the convenience of replacing the drill sleeve of the nut drill jig, simplify the replacement operation of the drill jig body, and reduce the maintenance cost of the nut drill jig.

[0004] This utility model provides a handheld nut drill jig, which includes: a drill jig body, an adjusting screw and a drill sleeve. The working surface of the drill jig body is provided with a guide hole for placing the drill sleeve, and the side wall of the drill jig body is provided with a mating groove for placing the adjusting screw. The guide hole is axially formed along the Z-axis, the mating groove is axially formed along the Y-axis, and the guide hole and the mating groove are interconnected. The adjusting set screw is inserted into the mating through groove, one end of the adjusting set screw extends into the guide hole, and the end of the adjusting set screw extending into the guide hole abuts against the side wall of the drill sleeve.

[0005] Furthermore, the mating groove is a threaded hole, and the adjusting set screw is threadedly connected inside the threaded hole.

[0006] Furthermore, the drill bushing and the guide hole are clearance fit.

[0007] Furthermore, the drill bushing is a cylindrical assembly, and the material of the drill bushing is cemented carbide.

[0008] Furthermore, the working surface of the drill jig body is also provided with several pin holes, which are arranged parallel to the guide holes.

[0009] Furthermore, the drill jig body is provided with a number of positioning pins, and one of the positioning pins is inserted into one of the pin holes.

[0010] Furthermore, the handheld nut drill jig also includes a handle and a spring steel sheet for connecting the handle and the drill jig body; One end of the spring steel sheet is fixed to one end of the handle, and the other end of the spring steel sheet is fixed to the drill jig body.

[0011] Furthermore, one end of the grip is provided with a slot, and one end of the spring steel sheet is inserted into the slot.

[0012] Furthermore, the grip and the spring steel sheet are locked together by bolts.

[0013] Furthermore, the drill jig body is provided with a stepped groove, the shape and contour of which match the shape and contour of the other end of the spring steel sheet.

[0014] This utility model provides a handheld nut drill jig. By setting a threaded hole in the radial direction of the guide hole of the nut drill jig, and using an adjusting screw to lock and unlock the drill sleeve in the guide hole, the convenience of replacing the drill sleeve of the nut drill jig can be improved, while simplifying the replacement operation of the drill jig body and reducing the maintenance cost of the nut drill jig. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the nut drill jig structure in an embodiment of this utility model; Figure 2 This is a schematic diagram of the back structure of the nut drill jig in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the drill jig body in an embodiment of this utility model; Figure 4 This is a schematic diagram of the handle structure of the nut drill jig in this embodiment of the utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please refer to Figures 1 to 4This utility model provides a handheld nut drill jig, which includes a drill jig body 1, an adjusting set screw 6, and a drill sleeve 4. The working surface of the drill jig body 1 is provided with a guide hole 12 for placing the drill sleeve 4, and the side wall of the drill jig body 1 is provided with a mating groove 11 for placing the adjusting set screw 6. The guide hole 12 is axially open along the Z-axis, and the mating groove 11 is axially open along the Y-axis. The guide hole 12 and the mating groove 11 are interconnected, that is, the mating groove 11 is located in the radial direction of the guide hole 12. The adjusting set screw 6 located in the mating groove 11 can connect with the drill sleeve 4 located in the guide hole 12 to form an abutment locking structure.

[0018] Furthermore, the mating groove 11 can also be configured to be slotted along the X-axis, that is, the groove opening of the mating groove 11 can be set on the other side wall of the drill jig body 1, ensuring that the mating groove 11 is located in the radial direction of the guide hole 12, so as to meet the clamping and locking requirements of the adjusting set screw 6 on the drill sleeve 4.

[0019] The adjusting set screw 6 is inserted into the mating groove 11, with one end extending into the guide hole 12, and the end of the adjusting set screw 6 extending into the guide hole 12 abutting against the side wall of the drill sleeve 4. The direct contact between the adjusting set screw 6 and the outer side wall of the drill sleeve 4 increases the contact pressure and friction between the drill sleeve 4 and the inner wall of the guide hole 12, ensuring a tight fit between the drill sleeve 4 and the guide hole 12 to meet the drilling guidance operation requirements of the drilling equipment.

[0020] Furthermore, the mating groove 11 is a threaded hole, and the adjusting screw 6 is threaded into the threaded hole. The adjusting screw 6 is provided with an external thread, so that the adjusting screw 6 can be threaded into the mating groove 11 through the external thread. By rotating the adjusting screw 6, the mating depth of the adjusting screw 6 in the mating groove 11 can be controlled. The adjusting screw 6 can be adjusted to extend into the guide hole 12, so that the adjusting screw 6 abuts against the side wall of the drill sleeve 4, thereby locking the drill sleeve 4; or the adjusting screw 6 can be adjusted to retract into the mating groove 11, so that the adjusting screw 6 and the drill sleeve 4 maintain a distance, thereby unlocking the drill sleeve 4, so that the drill sleeve 4 can be disassembled.

[0021] Specifically, the drill sleeve 4 and the guide hole 12 are clearance fit, and the fit tolerance between the drill sleeve 4 and the guide hole 12 is H7 / g6, or the fit tolerance between the drill sleeve 4 and the guide hole 12 is H8 / f7, so that the drill sleeve 4 can be easily fitted inside the guide hole 12, so that the drill sleeve 4 can be quickly replaced.

[0022] Furthermore, the drill sleeve 4 is a cylindrical assembly, the inner diameter of which can be adapted to the specifications of the drill bit of the drilling equipment to meet the guiding operation of the drill bit. The drill jig body 1 is made of steel, and the drill sleeve 4 is made of cemented carbide, which has the physical properties of high hardness, wear resistance, and good strength and toughness. By fitting the drill sleeve 4 into the guide hole 12, direct contact between the drill bit of the drilling equipment and the guide hole 12 of the drill jig body 1 is avoided, thereby reducing the wear and tear of the drill bit.

[0023] Furthermore, the working surface of the drill jig body 1 is provided with a plurality of pin holes 13, which are arranged parallel to the guide holes 12. The arrangement of the pin holes 13 corresponds to the hole positions of the support plate nut. The drill jig body 1 is provided with a plurality of positioning pins 5, one of which is inserted into one of the pin holes 13, so that the positioning pin 5 can be inserted into the hole positions of the support plate nut to achieve positioning of the support plate nut and ensure the accuracy of the support plate nut installation.

[0024] Specifically, the handheld nut drill jig also includes a handle 3 and a spring steel plate 2 for connecting the handle 3 and the drill jig body 1. One end of the spring steel plate 2 is fixed to one end of the handle 3, and the other end of the spring steel plate 2 is fixed to the drill jig body 1. The handle 3 provides a handhold for the operator, allowing the operator to use the drill jig handheld.

[0025] Furthermore, one end of the grip 3 is provided with a slot 31, and one end of the spring steel sheet 2 is inserted into the slot 31. The design of the slot 31 improves the assembly stability between the spring steel sheet 2 and the grip 3, and enables the assembly positioning of the spring steel sheet 2. The spring steel sheet 2 is used to realize the flexible connection between the grip 3 and the main body of the drill bushing 4, so that the operator can adjust the position of the drill jig according to the structural requirements of the actual installation position of the support plate nut, thereby improving the versatility of the drill jig in different usage scenarios.

[0026] Specifically, the grip 3 and the spring steel plate 2 are locked together by bolts. The bolts are used to lock and fix the grip 3 and the spring steel plate 2 to ensure the stability of the connection between the spring steel plate 2 and the grip 3.

[0027] Furthermore, the drill jig body 1 is provided with a stepped groove 14, the shape and contour of which match the shape and contour of the other end of the spring steel sheet 2. The drill jig body 1 and the spring steel sheet 2 are locked together by bolts, with one end of the spring steel sheet 2 correspondingly fitting in the stepped groove 14. By locking the spring steel sheet 2 and the drill jig body 1 with bolts, the handle 3 and the drill jig body 1 can be connected based on the spring steel sheet 2. The spring steel sheet 2 has high elasticity and good fatigue resistance, which can meet the usage requirements of handheld drill jigs.

[0028] Specifically, the installation and replacement process of the drill sleeve 4 of the handheld nut drill jig is as follows: Insert the drill bushing 4 into the guide hole 12 of the drill jig body 1, and rotate the adjusting screw 6 clockwise so that the end of the adjusting screw 6 extends into the guide hole 12 and presses against the side of the drill bushing 4.

[0029] If the drill bushing 4 is worn, the adjusting screw 6 can be rotated counterclockwise to loosen the locking of the drill bushing 4, so that the old drill bushing 4 can be quickly removed. After inserting the new drill bushing 4 into the guide hole 12, the new drill bushing 4 can be re-fixed by rotating the adjusting screw 6.

[0030] This utility model provides a handheld nut drill jig. By setting a threaded hole in the radial direction of the guide hole 12 of the nut drill jig, and using the adjusting screw 6 to lock and unlock the drill sleeve 4 inside the guide hole 12, the convenience of replacing the drill sleeve 4 of the nut drill jig can be improved. At the same time, the replacement operation of the drill jig body 1 can be simplified. After locking and unlocking the drill sleeve 4 by adjusting the adjusting screw 6, the drill sleeve 4 can be quickly disassembled and replaced based on the clearance fit between the drill sleeve 4 and the guide hole 12, avoiding damage to the guide hole 12. At the same time, it can reduce the recalibration of the guide hole 12 after replacing the drill sleeve 4, simplify the replacement operation of the drill sleeve 4, and effectively reduce the maintenance cost of the nut drill jig.

[0031] Furthermore, the above provides a detailed description of a handheld nut drill jig provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A handheld nut drill jig, characterized in that, The handheld nut drill jig includes: a drill jig body, an adjusting set screw, and a drill sleeve. The working surface of the drill jig body is provided with a guide hole for placing the drill sleeve, and the side wall of the drill jig body is provided with a mating groove for placing the adjusting set screw. The guide hole is axially formed along the Z-axis, the mating groove is axially formed along the Y-axis, and the guide hole and the mating groove are interconnected. The adjusting set screw is inserted into the mating through groove, one end of the adjusting set screw extends into the guide hole, and the end of the adjusting set screw extending into the guide hole abuts against the side wall of the drill sleeve.

2. The handheld nut drill jig as described in claim 1, characterized in that, The fitting slot is a threaded hole, and the adjusting set screw is threadedly connected inside the threaded hole.

3. The handheld nut drill jig as described in claim 1, characterized in that, The drill bushing and the guide hole are clearance fit.

4. The handheld nut drill jig as described in claim 1, characterized in that, The drill bushing is a cylindrical assembly, and the material of the drill bushing is cemented carbide.

5. The handheld nut drill jig as described in claim 1, characterized in that, The working surface of the drill jig body is also provided with several pin holes, which are arranged parallel to the guide holes.

6. The handheld nut drill jig as described in claim 5, characterized in that, The drill jig body is provided with several positioning pins, and one of the positioning pins is inserted into one of the pin holes.

7. The handheld nut drill jig as described in claim 1, characterized in that, The handheld nut drill jig also includes a handle and a spring steel sheet for connecting the handle and the drill jig body; One end of the spring steel sheet is fixed to one end of the handle, and the other end of the spring steel sheet is fixed to the drill jig body.

8. The handheld nut drill jig as described in claim 7, characterized in that, One end of the grip is provided with a slot, and one end of the spring steel sheet is inserted into the slot.

9. The handheld nut drill jig as described in claim 8, characterized in that, The grip and the spring steel sheet are locked together by bolts.

10. The handheld nut drill jig as described in claim 7, characterized in that, The drill jig body is provided with a stepped groove, the shape and contour of which match the shape and contour of the other end of the spring steel sheet.

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