A drill jig, a drilling system and a drilling method

Abstract

This invention belongs to the field of hole machining technology and discloses a drilling jig, a drilling system, and a drilling method. The drilling jig includes a first drilling template and a second drilling template. The first drilling template has a first guide hole and a tool hole, and the second drilling template has a second guide hole. The first guide hole is used to connect with the workpiece or to allow the cutting head of the drilling device to pass through. The second guide hole is used to allow the cutting head of the drilling device to pass through and corresponds to the tool hole. The first drilling template is connected to the workpiece, and the second drilling template is connected to the first drilling template. First, the workpiece is machined according to the position of the preset second guide hole on the second drilling template. Then, the second drilling template is disassembled, and the workpiece is machined according to the position of the preset first guide hole on the first drilling template. Finally, the connection position between the workpiece and the first drilling template is changed, and the unmachined holes on the workpiece are machined, thereby completing the machining of all holes on the workpiece.

Description

Technical Field

[0001] This invention relates to the field of hole machining technology, and more particularly to a drill jig, a drilling system, and a drilling method. Background Technology

[0002] During aircraft assembly, different components are mainly connected using rivets and bolts, which requires the machining of a large number of connecting holes. Drill jigs are used to assist in machining these connecting holes, improving drilling efficiency and reducing the skill requirements for workers.

[0003] In actual machining, many workpieces have holes with small spacing, causing interference between corresponding holes on the drill jig. Current technology typically uses an AB drill template for hole design, with staggered hole positions on the AB templates. When machining the workpiece, plate A is first connected to it, and drilling is performed according to the hole positions designed on plate A. After machining, plate A is removed, and plate B is then connected to the workpiece, and drilling is performed according to the hole positions designed on plate B. This process of removing plate A and replacing plate B easily leads to hole position deviations when drilling through plate B, resulting in low machining accuracy, significantly impacting assembly, and frequent drill template changes, leading to low work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling jig, a drilling system, and a drilling method to solve the problems of low machining accuracy of holes on workpieces and difficulty in replacing drilling jig templates.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On the one hand, a drill jig is provided, comprising:

[0007] A first drilling template, which is provided with a first guide hole and a tool passage hole. The first guide hole is used to connect with the workpiece and to allow the tool head of the drilling device to pass through.

[0008] The second drilling template is detachably connected to the first drilling template. The second drilling template is provided with a second guide hole, the distribution position of which corresponds to the through hole. The second guide hole is used for the cutting head of the drilling device to pass through.

[0009] Preferably, the drill jig further includes a connecting component, one end of which passes through the first guide hole for connecting the first drill jig to the workpiece.

[0010] Preferably, the first guide hole is a tapered hole, and the diameter of the upper end of the first guide hole along the drilling device's penetration direction is larger than the diameter of the lower end of the first guide hole; the connecting assembly includes a first connector and a second connector, the first connector is placed inside the first guide hole, the first connector includes a side wall and a bottom surface, the bottom surface of the first connector has an opening for the rod portion of the second connector to pass through, the shape of the side wall of the first connector matches the shape of the hole wall of the first guide hole, and the head of the second connector abuts against the bottom surface of the first connector.

[0011] Preferably, both the first guide hole and the second guide hole have snap-fit ​​grooves on their outer peripheral sides, which are used to snap the drilling device.

[0012] Preferably, the first drilling template and the second drilling template are respectively provided with chip removal grooves on the side opposite to the drilling device, and the chip removal grooves penetrate the end face of the first drilling template or the second drilling template.

[0013] Preferably, the first drilling template is provided with a first connecting hole, and the second drilling template is provided with a second connecting hole, the first connecting hole and the second connecting hole being used to detachably connect the first drilling template and the second drilling template.

[0014] On the other hand, a drilling system is provided, including a drilling device and a drill jig as described in any one of the above, wherein the drilling device can engage with the first drill template or the second drill template.

[0015] Preferably, the drilling device includes a fixing member and a drill bit. One end of the fixing member is connected to the drill bit, and the other end of the fixing member is provided with a snap-fit ​​member for snapping into a snap-fit ​​groove on the first drilling template or the second drilling template.

[0016] Preferably, the fixing member has a channel along its axial direction, and one end of the fixing member connected to the first drilling template or the second drilling template is provided with a cutting end. The cutting end can pass through the first guide hole or the second guide hole and is clearance-fitted with the first guide hole or the second guide hole. The cutting end has a through hole at one end communicating with the channel. The channel and the through hole are for the cutting head of the drill to pass through.

[0017] On the other hand, a drilling method is provided for application in the drilling system, the drilling method comprising:

[0018] Connect the workpiece to the first drill template at a portion of the first guide hole in the first drill template;

[0019] Connect the first drill template to the second drill template so that the second guide hole and the through hole are set accordingly;

[0020] The drill bit of the control drilling device passes through the second guide hole and the through hole in sequence to process the first set of holes in the workpiece;

[0021] Disassemble the second drill template;

[0022] The drill bit of the drilling device is controlled to pass through the first guide hole to process the second set of holes in the workpiece;

[0023] Change the connection position between the first drilling template and the workpiece;

[0024] The drilling device controls the cutting head to pass through the first guide hole corresponding to the unmachined hole in the workpiece, and to machine the third set of holes in the workpiece.

[0025] The beneficial effects of this invention are:

[0026] The drilling jig provided by this invention includes a first drilling template and a second drilling template. All holes on a workpiece can be machined by connecting or disassembling the first and second drilling templates. The first drilling template has a first guide hole and a through hole. The first guide hole is used to connect the workpiece and allow the cutting head of the drilling device to pass through. The second drilling template has a second guide hole, which is used for the cutting head of the drilling device to pass through and its distribution corresponds to the through hole. The first drilling template is connected to the workpiece, and the second drilling template is connected to the first drilling template. The workpiece is machined according to the positions of the second guide hole and the through hole. Then, the second drilling template is disassembled, and the drilling device is connected to the first drilling template. The workpiece is machined according to the positions of the preset first guide holes on the first drilling template. Finally, the connection position between the workpiece and the first drilling template is changed, and the unmachined holes on the workpiece are machined, thereby completing the machining of all holes on the workpiece. Throughout the entire machining process, there is no need to install or disassemble the workpiece on the second drilling template; the workpiece is always connected to the first drilling template, reducing the number of times the workpiece is disassembled and reassembled. The machined hole positions are less prone to deviation, thus improving the machining accuracy of the holes on the workpiece.

[0027] The drilling system provided by this invention includes a drilling jig and a drilling device, which can improve the machining accuracy of holes on a workpiece.

[0028] The drilling method provided by this invention avoids the workpiece being installed or removed from the second drilling template during drilling, reduces the number of times the workpiece is disassembled and reassembled, makes it less likely for the machined hole position to deviate, and improves the machining accuracy of the hole on the workpiece. Attached Figure Description

[0029] Figure 1 This is an assembly diagram of the drilling system provided in a specific embodiment of the present invention;

[0030] Figure 2This is a schematic diagram of the structure of the first drilling template provided in a specific embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the second drilling template provided in a specific embodiment of the present invention;

[0032] Figure 4 This is a cross-sectional view of the connection structure between the workpiece and the first drill template provided in a specific embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the first connector provided in a specific embodiment of the present invention;

[0034] Figure 6 This is a structural schematic diagram of the drill and fixing component provided in a specific embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the back side of the second drilling template provided in a specific embodiment of the present invention;

[0036] Figure 8 This is an assembly diagram of other embodiments provided in the specific embodiments of the present invention.

[0037] In the picture:

[0038] 1. First drill template; 11. First guide hole; 12. Through hole;

[0039] 2. Second drilling template; 21. Second guide hole;

[0040] 3. Workpiece;

[0041] 4. Drilling device; 41. Drilling tool; 42. Fixing component; 421. Snap-fit ​​component; 422. Exit end;

[0042] 5. First connecting component; 51. Side wall; 52. Bottom surface;

[0043] 6. Second connecting piece; 61. Connecting bolt; 62. Connecting nut;

[0044] 7. Snap-fit ​​slot;

[0045] 8. Chip removal groove;

[0046] 91. First connecting hole; 92. Second connecting hole. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] This invention provides a drill jig, a drilling system, and a drilling method. In the process of aircraft assembly, the drilling efficiency is improved and the operation is easier for workers by using the drill jig, drilling system, and drilling method provided by this invention.

[0052] like Figure 1 As shown, the drilling system provided in a specific embodiment of the present invention includes a drilling jig and a drilling device 4. The drilling jig is provided with a guide hole. During the processing of the workpiece 3, the drilling device 4 needs to be fixed to the drilling jig, and the workpiece 3 is processed through the position of the preset hole on the drilling jig.

[0053] like Figure 1-3As shown, the drill jig includes a first drill template 1 and a second drill template 2. The first drill template 1 has a first guide hole 11 and a through hole 12. The first guide hole 11 is used to connect with the workpiece 3 and to allow the cutting head of the drilling device 4 to pass through. The second drill template 2 is detachably connected to the first drill template 1. The second drill template 2 has a second guide hole 21, the distribution of which corresponds to the through hole 12. The second guide hole 21 is used to allow the cutting head of the drilling device 4 to pass through. Specifically, when the holes to be processed on the workpiece 3 are too dense, the diameter of the through hole 12 is smaller than the diameter of the first guide hole 11, while meeting the processing requirements of the holes on the workpiece 3, to avoid interference between the through hole 12 and the first guide hole 11. The position and number of the first guide hole 11, the second guide hole 21, and the through hole 12 are adapted to the position and number of holes to be processed on the workpiece 3. The diameter of the through hole 12 is larger than the diameter of the hole to be processed, so that the through hole 12 can both allow the cutting head of the drilling device 4 to pass through without affecting the size of the holes to be processed on the workpiece 3.

[0054] The first drilling template 1 is connected to the workpiece 3, and the second drilling template 2 is connected to the first drilling template 1. The workpiece 3 is machined according to the positions of the second guide hole 21 and the through hole 12. Then, the second drilling template 2 is disassembled, and the drilling device 4 is connected to the first drilling template 1. The workpiece 3 is machined according to the position of the preset first guide hole 11 on the first drilling template 1. Finally, the connection position between the workpiece 3 and the first drilling template 1 is changed, and the unmachined holes on the workpiece 3 are machined, thus completing the machining of all holes on the workpiece 3. Throughout the entire machining process, there is no need to install or remove the workpiece 3 from the second drilling template 2; the workpiece 3 remains connected to the first drilling template 1. This reduces the number of times the workpiece 3 is disassembled and reassembled, making it less prone to deviation in the machined hole positions, thereby improving the machining accuracy of the holes on the workpiece 3.

[0055] like Figure 4-5 As shown, during the processing of workpiece 3, workpiece 3 needs to be connected to the first drilling template 1. The first drilling template 1 and workpiece 3 are connected by a connecting component, which includes a first connecting member 5 and a second connecting member 6.

[0056] To ensure that the first connecting member 5 does not loosen, that is, to ensure the stability of the connection between the first drilling template 1 and the workpiece 3, the first guide hole 11 is a tapered hole, and the diameter of the upper end of the first guide hole 11 along the drilling device 4 is larger than the diameter of the lower end of the first guide hole 11; the first connecting member 5 is placed in the first guide hole 11, and the first connecting member 5 includes a side wall 51 and a bottom surface 52. The bottom surface 52 of the first connecting member 5 is provided with an opening for the rod of the second connecting member 6 to pass through. The shape of the side wall 51 of the first connecting member 5 matches the shape of the hole wall of the first guide hole 11, and the head of the second connecting member 6 abuts against the bottom surface 52 of the first connecting member 5. The first connector 5 is used to fix the second connector 6. The first guide hole 11 is a tapered hole that is wider at the top and narrower at the bottom, so that the first connector 5 cannot move downward after being placed in the first guide hole 11, thus fixing the first connector 5. The head of the second connector 6 abuts against the bottom surface 52 of the first connector 5, preventing the head of the second connector 6 from being exposed outside the first drill template 1, which would cause the second connector 6 to interfere with the drilling device 4 passing through the first guide hole 11 or the through hole 12. Specifically, in this embodiment, the second connector 6 is a connecting bolt 61, and is equipped with a connecting nut 62 to lock and fix the second connector 6.

[0057] like Figure 1-3 As shown, during the machining of workpiece 3, the second drill template 2 needs to be connected to the first drill template 1. The first drill template 1 has a first connecting hole 91, and the second drill template 2 has a second connecting hole 92. The first connecting hole 91 and the second connecting hole 92 are used to detachably connect the first drill template 1 and the second drill template 2. In this embodiment, the first connecting hole 91 is opened at each of the four corners of the first drill template 1, and the second connecting hole 92 is opened at each of the four corners of the second drill template 2, making the connection between the first drill template 1 and the second drill template 2 more stable. Specifically, bolts are used to pass through the first connecting hole 91 and the second connecting hole 92 to connect the first drill template 1 and the second drill template 2, and then locked and fixed with nuts.

[0058] like Figure 1-3 and Figure 6 As shown, during the processing of workpiece 3, the drilling device 4 needs to be connected to the first drilling template 1 (not shown in the figure) or to the second drilling template 2.

[0059] To enable the drilling device 4 to connect with the first drilling template 1 or the second drilling template 2, a locking groove 7 is provided on the outer periphery of both the first guide hole 11 and the second guide hole 21. The locking groove 7 is used to lock the drilling device 4. Adaptively, the drilling device 4 includes a fixing member 42 and a drill bit 41. One end of the fixing member 42 is connected to the drill bit 41, and the other end of the fixing member 42 is provided with a locking member 421, which is used to lock with the locking groove 7 on the first drilling template 1 or the second drilling template 2.

[0060] Furthermore, in order to allow the drill bit of the drill 41 to pass smoothly through and act on the workpiece 3, the fixing member 42 has a channel along its axial direction. The end of the fixing member 42 connected to the first drill template 1 or the second drill template 2 is provided with a cutting end 422. The cutting end 422 can pass through the first guide hole 11 or the second guide hole 21 and is clearance-fitted with the first guide hole 11 or the second guide hole 21. The cutting end 422 has a through hole at one end that communicates with the channel. The channel and the through hole allow the drill bit of the drill 41 to pass through.

[0061] Specifically, in this embodiment, the end of the fixing member 42 connected to the cutting end 422 is round-headed, and the other end is square-headed. The square-headed end of the fixing member 42 is connected to the drill 41, and the cutting end 422 is clearance-fitted with the first guide hole 11 or the second guide hole 21. The snap-fit ​​member 421 is a combination of a cylindrical head and a cylindrical rod. Correspondingly, the snap-fit ​​groove 7 includes a circular hole for the cylindrical head of the snap-fit ​​member 421 to pass through and a slide rail for locking the cylindrical head and allowing the cylindrical rod to slide. The snap-fit ​​groove 7 is an arc-shaped groove arranged around the axis of the first guide hole 11 or the second guide hole 21, and two snap-fit ​​grooves 7 are provided along the periphery of each first guide hole 11 and second guide hole 21. The two snap-fit ​​grooves 7 are centrally symmetrically arranged with the center of the first guide hole 11 or the second guide hole 21 as the center of symmetry, making the snap-fit ​​more stable. The snap-fit ​​groove 7 is set in an arc shape so that the snap-fit ​​groove 7 can match the shape of the first guide hole 11 and the second guide hole 21. During the snap-fit ​​process, the protruding end 422 of the fixing member 42 is inserted through the first guide hole 11 or the second guide hole 21. The cylindrical head of the snap-fit ​​member 421 is aligned with the hole on the snap-fit ​​groove 7. The cylindrical head of the fixing member 42 is pushed into the circular hole of the snap-fit ​​groove 7 and rotated along the arc direction of the snap-fit ​​groove 7. By rotating and sliding the snap-fit ​​member 421 in the snap-fit ​​groove 7, the fixing member 42 is tightened and fixed to the first drill template 1 or the second drill template 2.

[0062] Furthermore, such as Figure 1-3 and Figure 7 As shown, in order to remove waste chips after processing and make the processing smoother, the first drilling template 1 and the second drilling template 2 are respectively provided with chip removal grooves 8 on the side opposite to the connecting drilling device 4. The chip removal grooves 8 penetrate through the end face of the first drilling template 1 or the second drilling template 2. Specifically, in this embodiment, the chip removal grooves 8 are set as multiple interconnected grooves distributed laterally or longitudinally along the first drilling template 1 or the second drilling template 2, which facilitates airflow and ensures smooth chip removal.

[0063] like Figure 8 As shown, in other embodiments, there is no limitation on the size of the first drilling template 1 and the second drilling template 2. Two or more first drilling templates 1 and one or more second drilling templates 2 can be combined and connected to the workpiece 3 for drilling the workpiece 3.

[0064] This embodiment also provides a drilling method, applied to the drilling system described above.

[0065] The drilling method provided in this specific embodiment is described below:

[0066] Drilling methods include:

[0067] Connect the workpiece 3 to the first drill template 1 at part of the first guide hole 11 of the first drill template 1;

[0068] Connect the first drilling template 1 and the second drilling template 2 so that the second guide hole 21 is set to correspond with the through hole 12;

[0069] The cutting head of the drilling device 4 passes through the second guide hole 21 and the through hole 12 in sequence to process the first set of holes in the workpiece 3;

[0070] Disassemble the second drill template 2;

[0071] The drill bit of the drilling device 4 is controlled to pass through the first guide hole 11 to process the second set of holes in the workpiece 3;

[0072] Change the connection position between the first drilling template 1 and the workpiece 3;

[0073] The drill bit of the drilling device 4 is controlled to pass through the first guide hole 11 corresponding to the unmachined hole of the workpiece 3, and the workpiece 3 is machined for the third set of holes.

[0074] Specifically, the drilling method includes the following steps:

[0075] Step 1: Prepare for the process. This includes determining the positions of the first guide hole 11 and the through hole 12 based on the distribution of the holes to be machined on the workpiece 3 and the dimensions of the drilling device 4 to avoid interference during the machining process. Then, determine the position of the second guide hole 21 based on the positions of the remaining holes to be machined on the workpiece 3. Some of the holes to be machined on the workpiece 3 will be made into temporary holes for connection with the drill jig. The diameter of the temporary holes is smaller than the diameter of the holes to be machined. This completes the preparation work.

[0076] Step 2: Install workpiece 3 onto the first drilling template 1.

[0077] Specifically, the connecting component is placed in the first guide hole 11 corresponding to the temporary hole on the first drilling template 1 and the workpiece 3. The connecting component passes through the first guide hole 11 and the temporary hole on the workpiece 3, and the workpiece 3 is installed on the first drilling template 1 through the connecting component.

[0078] Step 3: Connect the first drill template 1 and the second drill template 2 so that the second guide hole 21 is set to correspond with the through hole 12.

[0079] Specifically, the first drilling template 1 is provided with one or more first connecting holes 91, and the second drilling template 2 is provided with corresponding second connecting holes 92. The first drilling template 1 and the second drilling template 2 can be connected by connecting parts such as bolts and nuts.

[0080] Step 4: Fix the drilling device 4 onto the second drilling template 2, and make the cutting head of the drilling device 4 face the second guide hole 21 and the through hole 12.

[0081] Specifically, the drilling device 4 is fixed to the second drilling template 2 by snapping together with the snap-fit ​​part 421 and the snap-fit ​​groove 7, and the cutting head of the drilling device 4 is positioned directly opposite the second guide hole 21 and the through hole 12.

[0082] Step 5: Start the drilling device 4 to process the first set of holes on the workpiece 3, that is, process the workpiece 3 according to the position of the second guide hole 21 preset on the second drilling template 2.

[0083] Step 6: Repeat steps 4 and 5 until all the first group of holes on workpiece 3 have been machined.

[0084] Step 7: Disassemble the second drill template 2, fix the drilling device 4 on the first drill template 1, and set the cutting head of the drilling device 4 to face the first guide hole 11.

[0085] Specifically, the drilling device 4 is disassembled from the second drilling template 2, and the second drilling template 2 is disassembled from the first drilling template 1. At this time, the first drilling template 1 is still connected to the workpiece 3. The drilling device 4 is fixed on the first drilling template 1, and the cutting head of the drilling device 4 is positioned directly opposite the first guide hole 11.

[0086] Step 8: Start the drilling device 4 to process the second set of holes in the workpiece 3, that is, process the workpiece 3 according to the position of the first guide hole 11 preset on the first drilling template 1.

[0087] Step 9: Repeat Step 7, which involves aligning the drill bit of the drilling device 4 with the first guide hole 11, and Step 8, until all the second set of holes to be processed on the workpiece 3 are completed.

[0088] Step 9: Change the connection position between the first guide hole 11 and the workpiece 3 so that the cutting head of the drilling device 4 is aligned with the first guide hole 11 corresponding to the unmachined hole of the workpiece 3, and machine the third set of holes on the workpiece 3.

[0089] Specifically, the connecting assembly is disassembled and placed in the first guide hole 11 corresponding to the pre-machined hole on the workpiece 3. The second connecting piece 6 is replaced with a connecting bolt 61 of a different specification to fit and pass through the pre-machined hole on the workpiece 3, thereby reconnecting the workpiece 3 to the first drill template 1. The drill bit of the drilling device 4 is aligned with the position of the remaining unmachined hole on the workpiece 3 to machine the third set of holes on the workpiece 3.

[0090] In steps five, seven, and eight above, during drilling, the drilling device 4 needs to be sequentially engaged with the engaging groove 7 around each first guide hole 11 or second guide hole 21 to complete the machining of all holes on the workpiece 3. In other embodiments, if the drilling device 4 has a sufficient number of cutting heads, multiple cutting heads on the drilling device 4 can be simultaneously inserted into multiple first guide holes 11 or second guide holes 21 of the first drilling template 1 or the second drilling template 2 to simultaneously machine multiple holes to be machined on the workpiece 3.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drill jig, characterized in that, include: The first drilling template (1) is provided with a first guide hole (11) and a through hole (12). The diameter of the through hole (12) is smaller than the diameter of the first guide hole (11). Multiple first guide holes (11) are provided. The first guide holes (11) are used to connect with the workpiece (3) and to allow the cutting head of the drilling device (4) to pass through. The workpiece (3) is connected to the first drilling template (1) through a portion of the first guide holes (11) on the first drilling template (1). The second drilling template (2) is detachably connected to the first drilling template (1). The second drilling template (2) is provided with a second guide hole (21). The distribution position of the second guide hole (21) corresponds to the through hole (12). The second guide hole (21) is used for the cutting head of the drilling device (4) to pass through. Both the first guide hole (11) and the second guide hole (21) are provided with snap-fit ​​grooves (7) on their outer periphery, and the snap-fit ​​grooves (7) are used to snap the drilling device (4).

2. The drill jig according to claim 1, characterized in that, The drill jig also includes a connecting component, one end of which is provided with the first guide hole (11) for connecting the first drill template (1) to the workpiece (3).

3. The drill jig according to claim 2, characterized in that, The first guide hole (11) is a tapered hole. The diameter of the upper end of the first guide hole (11) along the drilling device (4) penetration direction is larger than the diameter of the lower end of the first guide hole (11). The connecting assembly includes a first connector (5) and a second connector (6). The first connector (5) is placed in the first guide hole (11). The first connector (5) includes a side wall (51) and a bottom surface (52). The bottom surface (52) of the first connector (5) is provided with an opening for the rod of the second connector (6) to pass through. The shape of the side wall (51) of the first connector (5) matches the shape of the hole wall of the first guide hole (11). The head of the second connector (6) abuts against the bottom surface (52) of the first connector (5).

4. The drill jig according to claim 1, characterized in that, The first drilling template (1) and the second drilling template (2) are respectively provided with chip removal grooves (8) on the side opposite to the drilling device (4), and the chip removal grooves (8) penetrate the end face of the first drilling template (1) or the second drilling template (2).

5. The drill jig according to claim 1, characterized in that, The first drilling template (1) is provided with a first connecting hole (91), and the second drilling template (2) is provided with a second connecting hole (92). The first connecting hole (91) and the second connecting hole (92) are used to detachably connect the first drilling template (1) and the second drilling template (2).

6. A drilling system, characterized in that, The device includes a drilling device (4) and a drill jig as described in any one of claims 1-5, wherein the drilling device (4) can engage with the first drill template (1) or the second drill template (2).

7. The drilling system according to claim 6, characterized in that, The drilling device (4) includes a fixing member (42) and a drill (41). One end of the fixing member (42) is connected to the drill (41), and the other end of the fixing member (42) is provided with a snap-fit ​​member (421). The snap-fit ​​member (421) is used to snap-fit ​​with the snap-fit ​​groove (7) on the first drilling template (1) or the second drilling template (2).

8. The drilling system according to claim 7, characterized in that, The fixing member (42) has a channel along its axial direction. The end of the fixing member (42) connected to the first drill template (1) or the second drill template (2) is provided with a cutting end (422). The cutting end (422) can pass through the first guide hole (11) or the second guide hole (21) and is clearance-fitted with the first guide hole (11) or the second guide hole (21). The cutting end (422) has a through hole at one end communicating with the channel. The channel and the through hole are for the cutting head of the drill (41) to pass through.

9. A drilling method, applied to the drilling system according to any one of claims 6-8, characterized in that, The drilling method includes: The workpiece (3) is connected to the first drill template (1) at part of the first guide hole (11) of the first drill template (1); Connect the first drill template (1) and the second drill template (2) so that the second guide hole (21) and the through hole (12) are set in correspondence; The cutting head of the drilling device (4) passes through the second guide hole (21) and the through hole (12) in sequence to process the first set of holes in the workpiece (3); Disassemble the second drill template (2); The drill bit of the drilling device (4) is controlled to pass through the first guide hole (11) to process the second set of holes in the workpiece (3); Change the connection position between the first drilling template (1) and the workpiece (3); The drill bit of the drilling device (4) is controlled to pass through the first guide hole (11) corresponding to the unprocessed hole of the workpiece (3) to process the third set of holes of the workpiece (3).

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