Positioning and drilling device for door machining

Abstract

This utility model relates to the field of door processing technology, and in particular to a positioning drilling device for door processing. Specifically, it includes: a clamping assembly inside a housing, connected to a driving assembly, the driving assembly being mounted on the outer wall of the housing; a drilling sleeve slidably mounted on the housing in the horizontal direction, the drilling sleeve being connected to an adjusting assembly via a sliding frame; a fixing plate connected to the housing via a telescopic assembly; a fixing block on the fixing plate; a first threaded rod rotatably mounted on the fixing block; two fixing heads on two opposite threaded areas of the first threaded rod; through grooves at both ends of the fixing plate, with guide posts within the through grooves; guide grooves on the fixing heads, the guide grooves sliding on the guide posts; and an overlapping plate at the top of the fixing plate. This device solves the problems of low drilling position accuracy, low efficiency, and poor product consistency in conventional door processing methods.

Description

Technical Field

[0001] This utility model relates to the field of door processing technology, and in particular to a positioning drilling device for door processing. Background Technology

[0002] In the manufacturing process of doors (such as wooden doors and metal doors), drilling is a key step in installing hardware such as hinges and locks.

[0003] Currently, most small and medium-sized enterprises use manual measurement and marking or simple clamps, supplemented by conventional processing methods such as hand-held electric drills, to process door bodies. However, this conventional door body processing method suffers from low drilling accuracy, low efficiency, and poor product consistency.

[0004] Therefore, how to provide a positioning drilling device for door body processing that can improve production efficiency and applicability while ensuring the drilling accuracy of the door body is an urgent technical problem to be solved. Utility Model Content

[0005] This utility model provides a positioning drilling device for door body processing, which solves the problems of low drilling position accuracy, low efficiency and poor product consistency in conventional door body processing methods.

[0006] This utility model provides a positioning drilling device for door processing, comprising: a housing, a clamping assembly disposed inside the housing, the clamping assembly being connected to a driving assembly, the driving assembly being disposed on the outer side wall of the housing, the driving component being used to drive the clamping assembly to clamp the door, and a drilling sleeve being slidably disposed on the housing in the horizontal direction, the drilling sleeve being connected to an adjusting assembly via a sliding frame, the adjusting assembly being used to adjust the position of the drilling sleeve on the housing; A fixed plate is connected to the housing via a telescopic assembly. The telescopic assembly is used to adjust the vertical distance between the fixed plate and the housing. A fixed block is provided on the fixed plate, and a first threaded rod is rotatably provided on the fixed block. Two fixed heads are respectively provided on two opposite threaded areas of the first threaded rod. Through grooves are provided at both ends of the fixed plate, and guide posts are provided in the through grooves. Guide grooves are provided on the fixed heads, and the guide grooves slide on the guide posts. The fixed heads are slidably connected to the fixed plate through the guide grooves. An overlapping plate is provided at the top of the fixed plate. The overlapping plate and the two fixed heads surround the top corner of the door hinge side by three sides for pressing and fixing.

[0007] In one possible implementation, the clamping assembly includes a second threaded rod, a movable block, a clamping plate, and a clamping head. The second threaded rod is rotatably disposed between two opposite sidewalls of the housing along its length, and one end of the second threaded rod extends through the sidewall of the housing and is connected to the drive assembly. Two movable blocks are respectively disposed on the two opposite threaded areas of the second threaded rod. The movable blocks extend through the sidewall of the housing and are connected to the clamping head through the clamping plate.

[0008] In one possible implementation, a movable plate is provided between the movable block and the clamping plate, and guide frames are provided at both the upper and lower ends of the side wall of the movable plate. Guide plates are provided at both the upper and lower ends of the side wall of the housing. The guide frames are sleeved in the guide plates, and the movable plate is slidably connected to the housing through the guide frames.

[0009] In one possible implementation, a limiting groove is provided on the side wall of the housing, and the moving block slides at least partially within the limiting groove.

[0010] In one possible implementation, the drive assembly includes a motor, a first pulley, and a second pulley. The motor is mounted on the top of the housing via a reinforcing plate. The first pulley is mounted on the rotating shaft of the motor. The first pulley and the second pulley are connected by a belt. The second pulley is mounted on the second threaded rod. The first pulley and the second pulley are covered with a protective cover.

[0011] In one possible implementation, the telescopic assembly includes a third threaded rod, a sliding sleeve, and a sliding rod. The third threaded rod is rotatably mounted on the sliding sleeve, the sidewall of the sliding sleeve is connected to the fixed plate, the third threaded rod is screwed to the sliding rod, and the bottom end of the sliding rod is connected to the housing via the adjusting assembly.

[0012] In one possible implementation, positioning grooves are provided on both opposite sidewalls of the sliding sleeve, and positioning blocks are provided on both opposite sidewalls of the sliding rod, with the positioning blocks sliding within the positioning grooves.

[0013] In one possible implementation, the adjusting assembly includes an adjusting frame, a fourth threaded rod, and an adjusting block. The top end of the adjusting frame is connected to the bottom end of the sleeve rod, and the bottom end of the adjusting frame is connected to the housing. The fourth threaded rod is rotatably disposed between the two side walls of the adjusting frame, and the adjusting block is screwed onto the fourth threaded rod. The bottom end of the adjusting block is connected to the sliding frame.

[0014] In one possible implementation, a first scale corresponding to the adjustment block is provided on the side wall of the adjustment frame away from the clamping head.

[0015] In one possible implementation, a second scale corresponding to the positioning block is provided on both sides of the positioning groove.

[0016] The beneficial effects of this utility model are as follows: First, the vertical distance between the fixed plate and the housing is adjusted by the telescopic component to accommodate drilling positions at different heights. Then, rotating the first threaded rod drives the two fixed heads to move towards each other along the guide post. Through cooperation with the overlapping plate at the top of the fixed plate, they enclose and press the top corner of the door hinge side from three directions, achieving precise positioning. Simultaneously, the drive component drives the clamping component to clamp the door body from both sides. Finally, the position of the sliding frame with the drilling sleeve in the horizontal direction of the door body is adjusted by the adjusting component. After determining the drilling point, the drill bit can pass through the positioned drilling sleeve to drill a hole in the door body. The fixing method of the overlapping plate and fixed heads, along with the clamping component, ensures the stability of the door hinge side during processing. Furthermore, the telescopic and adjusting components adjust the horizontal and vertical positions of the drilling sleeve in the door body, providing precise positioning. This ensures the processing accuracy of the hinge mounting holes. It solves the problems of low drilling position accuracy, low efficiency, and poor product consistency inherent in conventional door processing methods. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a first-view perspective perspective view of a positioning drilling device for door body processing according to the present invention. Figure 2 This is a second-view perspective perspective view of a positioning drilling device for door body processing according to the present invention. Figure 3 This is an exploded perspective view of the telescopic component of a positioning drilling device for door body processing according to the present invention. Figure 4 This is a perspective view of the fixing block portion of a positioning drilling device for door body processing according to the present invention; Figure 5 This is a cross-sectional perspective view of the clamping component of a positioning drilling device for door body processing according to the present invention; Figure 6 This is a three-dimensional cross-sectional view of the housing of a positioning drilling device for door processing according to the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Clamping assembly; 101. Second threaded rod; 102. Moving block; 103. Clamping plate; 104. Clamping head; 2. Drive assembly; 201. Motor; 202. First pulley; 203. Second pulley; 3. Telescopic assembly; 301. Third threaded rod; 302. Sliding sleeve; 303. Sliding rod; 4. Adjustment assembly; 401. Adjustment frame; 402. Fourth threaded rod; 403. Adjustment block; 5. Housing; 6. Drilling sleeve; 7. Sliding frame; 8. Fixing plate; 9. Fixing block; 10. First threaded rod; 11. Fixing head; 12. Through groove; 13. Guide post; 14. Guide groove; 15. Overlap plate; 16. Moving plate; 17. Guide frame; 18. Guide plate; 19. Limiting groove; 20. Reinforcing plate; 21. Protective cover; 22. Positioning groove; 23. Positioning block; 24. Slot hole; 25. Gasket. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] 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" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] See Figures 1 to 6 This utility model provides a positioning drilling device for door body processing, comprising: The housing 5 is provided with a clamping component 1, which is connected to the driving component 2. The driving component 2 is located on the outer wall of the housing 5. The driving component is used to drive the clamping component 1 to clamp the door body. The housing 5 is slidably provided with a drilling sleeve 6 in the horizontal direction. The drilling sleeve 6 is connected to the adjusting component 4 through the sliding frame 7. The adjusting component 4 is used to adjust the position of the drilling sleeve 6 on the housing 5.

[0024] The fixed plate 8 is connected to the housing 5 via the telescopic assembly 3. The telescopic assembly 3 is used to adjust the vertical distance between the fixed plate 8 and the housing 5. The fixed plate 8 is provided with a fixed block 9. The fixed block 9 is rotatably provided with a first threaded rod 10. Two fixed heads 11 are respectively provided on two opposite threaded areas of the first threaded rod 10. The fixed plate 8 is provided with through grooves 12 at both ends. Guide posts 13 are provided in the through grooves 12. Guide grooves 14 are provided on the fixed heads 11. The guide grooves 14 slide on the guide posts 13. The fixed heads 11 are slidably connected to the fixed plate 8 through the guide grooves 14. The top of the fixed plate 8 is provided with an overlapping plate 15. The overlapping plate 15 and the two fixed heads 11 surround the top corner of the door hinge side by three sides for pressing and fixing.

[0025] When the fixing plate 8 is connected to the door body, the sides of the top corners on the hinge side abut against the bottom surface of the overlapping plate 15 and the opposite sides of the two fixing heads 11. The cooperation between the guide groove 14 and the guide post 13 restricts the fixing head 11 to move only axially when driven by the first threaded rod 10. The housing 5 has slots 24 on both opposite sidewalls along the width direction, which provide a channel for the movement of the drill sleeve 6.

[0026] Specifically, firstly, the vertical distance between the fixed plate 8 and the housing 5 is adjusted using the telescopic component 3 to accommodate drilling positions at different heights. Then, the first threaded rod 10 is rotated, driving the two fixed heads 11 to move towards each other along the guide post 13. By cooperating with the overlapping plate 15 at the top of the fixed plate 8, they enclose and press the top corner of the door hinge side from three directions, achieving precise positioning. Simultaneously, the drive component 2 drives the clamping component 1 to clamp the door from both sides. Finally, the position of the sliding frame 7 with the drilling sleeve 6 in the horizontal direction of the door is adjusted using the adjusting component 4. After determining the drilling point, the drill bit can pass through the positioned drilling sleeve 6 to drill a hole in the door. The fixing method of the overlapping plate 15 and the fixed heads 11, along with the clamping component 1, ensures the stability of the door hinge side during processing. Furthermore, the telescopic component 3 and the adjusting component 4 adjust the horizontal and vertical positions of the drilling sleeve 6 in the door, providing precise positioning of the drilling position. This ensures the processing accuracy of the hinge mounting holes.

[0027] In some embodiments, the clamping assembly 1 includes a second threaded rod 101, a moving block 102, a clamping plate 103, and a clamping head 104. The second threaded rod 101 is rotatably disposed between two opposite sidewalls of the housing 5 along its length direction, and one end of the second threaded rod 101 extends through the sidewall of the housing 5 and is connected to the drive assembly 2. Two moving blocks 102 are respectively disposed on the two opposite threaded areas of the second threaded rod 101. The moving blocks 102 extend through the sidewall of the housing 5 and are connected to the clamping head 104 through the clamping plate 103.

[0028] Among them, the two clamping heads 104 are provided with pads 25 on their opposite sides. The pads 25 increase the friction between the clamping heads 104 and the side wall of the door, thereby improving the stability of the clamping heads 104 when clamping the door.

[0029] Specifically, the drive assembly 2 drives the second threaded rod 101 to rotate, enabling the two moving blocks 102 to move synchronously towards each other. This, in turn, drives the clamping heads 104 on both sides to move synchronously via the clamping plate 103, thereby clamping or releasing the door from the left and right sides. The rapid, synchronous, and centered clamping of the door ensures that the housing 5 does not move laterally or longitudinally when drilling holes in the door.

[0030] It should be noted that a movement channel is reserved on the side wall of the housing 5 for the movement of the moving block 102, and the movement of the moving block 102 will not be obstructed.

[0031] In some embodiments, a movable plate 16 is provided between the movable block 102 and the clamping plate 103. Guide frames 17 are provided at both the upper and lower ends of the side wall of the movable plate 16, and guide plates 18 are provided at both the upper and lower ends of the side wall of the housing 5. The guide frames 17 are sleeved in the guide plates 18, and the movable plate 16 is slidably connected to the housing 5 through the guide frames 17.

[0032] When the moving block 102 moves, the moving plate 16 moves synchronously, and the guide frame 17 slides along the guide plate 18 on the housing 5. The cooperation between the guide frame 17 and the guide plate 18 provides additional guidance and support for the movement of the clamping plate 103, enhancing the stability and rigidity during the clamping process and improving the reliability of the clamping.

[0033] In some embodiments, a limiting groove 19 is provided on the side wall of the housing 5, and the moving block 102 slides at least partially within the limiting groove 19.

[0034] When the movable block 102 moves under the drive of the second threaded rod 101, part of its structure always slides within the limiting groove 19. This ensures that the movable block 102 moves along the horizontal axis.

[0035] In some embodiments, the drive assembly 2 includes a motor 201, a first pulley 202, and a second pulley 203. The motor 201 is mounted on the top of the housing 5 via a reinforcing plate 20. The first pulley 202 is mounted on the rotating shaft of the motor 201. The first pulley 202 and the second pulley 203 are connected by a belt. The second pulley 203 is mounted on the second threaded rod 101. The first pulley 202 and the second pulley 203 are covered by a protective cover 21.

[0036] The rotating shaft of motor 201 drives the first pulley 202 to rotate, and transmits power to the second pulley 203 via a belt, thereby driving the second threaded rod 101 to rotate. The protective cover 21 prevents dust and debris from interfering with the transmission, improving the safety of the equipment.

[0037] In some embodiments, the telescopic assembly 3 includes a third threaded rod 301, a sliding sleeve 302, and a sliding rod 303. The third threaded rod 301 is rotatably mounted on the sliding sleeve 302. The side wall of the sliding sleeve 302 is connected to the fixed plate 8. The third threaded rod 301 is screwed to the sliding rod 303. The bottom end of the sliding rod 303 is connected to the housing 5 through the adjusting assembly 4.

[0038] Rotating the third threaded rod 301 drives the slide rod 303 to extend or retract relative to the sliding sleeve 302, thereby raising or lowering the entire fixed plate 8 to adjust the height of the housing 5. This ensures that the set height of the housing 5 can be stably maintained during drilling.

[0039] In some embodiments, the sliding sleeve 302 is provided with positioning grooves 22 on two opposite side walls, and the sliding rod 303 is provided with positioning blocks 23 on two opposite side walls, and the positioning blocks 23 slide in the positioning grooves 22.

[0040] During the lifting and lowering of the slide rod 303 relative to the sliding sleeve 302, the positioning block 23 on the slide rod 303 is restricted to slide within the positioning groove 22 of the sliding sleeve 302. This ensures the axial movement of the slide rod 303 and guarantees the stability of its movement.

[0041] In some embodiments, the adjusting assembly 4 includes an adjusting frame 401, a fourth threaded rod 402, and an adjusting block 403. The top end of the adjusting frame 401 is connected to the bottom end of the sleeve rod, and the bottom end of the adjusting frame 401 is connected to the housing 5. The fourth threaded rod 402 is rotatably disposed between the two side walls of the adjusting frame 401. The adjusting block 403 is screwed onto the fourth threaded rod 402, and the bottom end of the adjusting block 403 is connected to the sliding frame 7.

[0042] Rotating the fourth threaded rod 402 drives the adjusting block 403, which is screwed to it, to move horizontally within the adjusting frame 401. The sliding frame 7 and the drilling sleeve 6 move synchronously, thereby precisely adjusting the lateral position of the drilled hole. This adapts to the hinge mounting hole spacing requirements of different door sizes.

[0043] In some embodiments, a first scale corresponding to the adjustment block 403 is provided on the side wall of the adjustment frame 401 away from the clamping head 104.

[0044] During adjustment, the operator can precisely control the movement distance of the adjusting block 403 by directly referring to the reading of the first scale. This achieves quantitative adjustment of the drilling position, improving drilling accuracy and efficiency.

[0045] In some embodiments, the positioning groove 22 is provided with a second scale corresponding to the positioning block 23 on both sides.

[0046] In this system, with the operator using the overlapping plate 15 at the top of the fixed plate 8 to surround and press the top corner of the door hinge side from three directions, the height of the housing 5 can be precisely read and controlled based on the position of the positioning block 23 on the second scale next to the positioning groove 22 when adjusting the height. This facilitates quick adjustment of the drilling sleeve 6 to a height that matches the drilling position, improving the convenience and accuracy of the operation.

[0047] Work process First, the operator places the door to be processed in the processing area. Then, the overlapping plate 15 is placed on the top surface of the hinge side of the door. The first threaded rod 10 is rotated, driving the two fixed heads 11 to move towards each other along the guide post 13. Through cooperation with the overlapping plate 15 on the top of the fixed plate 8, they enclose and press the top corner of the hinge side of the door from three directions. Next, the motor 201 is started, the first pulley 202 rotates, driving the second pulley 203 to rotate. The second threaded rod 101 rotates synchronously, driving the two moving blocks 102 to move towards each other within the limiting groove 19 of the housing 5. The moving plate 16, clamping plate 103, and clamping head 104 move synchronously. Simultaneously, the guide frame 17 slides along the guide plate 18 of the housing 5, thereby clamping and fixing the door from both sides.

[0048] Then, the operator rotates the third threaded rod 301 according to the height of the drilled hole position on the door. The drive slide rod 303 drives the fixed plate 8 to rise and fall. The operator can refer to the second scale next to the positioning slot 22 for precise height positioning.

[0049] Finally, according to the hinge hole position requirements, the operator rotates the fourth threaded rod 402, driving the adjusting block 403 to move horizontally within the adjusting frame 401, thereby moving the sliding frame 7 and the drilling sleeve 6 to the predetermined drilling position. The operator can refer to the first scale on the adjusting frame 401 to ensure accurate positioning. After all positioning is completed, the drilling machine can then perform drilling operations on the door body through the precisely positioned drilling sleeve 6.

[0050] This invention enables multi-directional, multi-point coordinated fixing and guided drilling of the door body. It effectively solves the problem of easy displacement or warping of the door body in traditional processing, significantly improving the processing accuracy, consistency, and operational efficiency of hinge mounting holes, making it particularly suitable for mass production.

[0051] In the above embodiments, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning drilling device for door body processing, characterized in that, include: A housing, wherein a clamping assembly is provided inside the housing, the clamping assembly is connected to a driving assembly, the driving assembly is disposed on the outer side wall of the housing, the driving component is used to drive the clamping assembly to clamp the door body, and a drilling sleeve is slidably provided on the housing in the horizontal direction, the drilling sleeve is connected to an adjustment assembly through a sliding frame, the adjustment assembly is used to adjust the position of the drilling sleeve on the housing; A fixed plate is connected to the housing via a telescopic assembly. The telescopic assembly is used to adjust the vertical distance between the fixed plate and the housing. A fixed block is provided on the fixed plate, and a first threaded rod is rotatably provided on the fixed block. Two fixed heads are respectively provided on two opposite threaded areas of the first threaded rod. Through grooves are provided at both ends of the fixed plate, and guide posts are provided in the through grooves. Guide grooves are provided on the fixed heads, and the guide grooves slide on the guide posts. The fixed heads are slidably connected to the fixed plate through the guide grooves. An overlapping plate is provided at the top of the fixed plate. The overlapping plate and the two fixed heads surround the top corner of the door hinge side by three sides for pressing and fixing.

2. The positioning drilling device for door body processing according to claim 1, characterized in that, The clamping assembly includes a second threaded rod, a movable block, a clamping plate, and a clamping head. The second threaded rod is rotatably disposed between two opposite sidewalls of the housing along its length, and one end of the second threaded rod protrudes through the sidewall of the housing and is connected to the drive assembly. Two movable blocks are respectively disposed on the two opposite threaded areas of the second threaded rod. The movable blocks protrude through the sidewall of the housing and are connected to the clamping head through the clamping plate.

3. The positioning drilling device for door body processing according to claim 2, characterized in that, A movable plate is provided between the movable block and the clamping plate. Guide frames are provided at both the upper and lower ends of the side wall of the movable plate. Guide plates are provided at both the upper and lower ends of the side wall of the housing. The guide frames are sleeved in the guide plates. The movable plate is slidably connected to the housing through the guide frames.

4. The positioning drilling device for door body processing according to claim 3, characterized in that, The side wall of the housing is provided with a limiting groove, and the moving block slides at least partially within the limiting groove.

5. The positioning drilling device for door body processing according to claim 2, characterized in that, The drive assembly includes a motor, a first pulley, and a second pulley. The motor is mounted on the top of the housing via a reinforcing plate. The first pulley is mounted on the rotating shaft of the motor. The first pulley and the second pulley are connected by a belt. The second pulley is mounted on the second threaded rod. The first pulley and the second pulley are covered with a protective cover.

6. The positioning drilling device for door body processing according to claim 1, characterized in that, The telescopic assembly includes a third threaded rod, a sliding sleeve, and a sliding rod. The third threaded rod is rotatably mounted on the sliding sleeve. The side wall of the sliding sleeve is connected to the fixed plate. The third threaded rod is screwed to the sliding rod. The bottom end of the sliding rod is connected to the housing through the adjusting assembly.

7. The positioning drilling device for door body processing according to claim 6, characterized in that, The sliding sleeve has positioning grooves on its two opposite side walls, and the sliding rod has positioning blocks on its two opposite side walls. The positioning blocks slide within the positioning grooves.

8. The positioning drilling device for door body processing according to claim 6, characterized in that, The adjustment assembly includes an adjustment frame, a fourth threaded rod, and an adjustment block. The top end of the adjustment frame is connected to the bottom end of the sleeve rod, and the bottom end of the adjustment frame is connected to the housing. The fourth threaded rod is rotatably disposed between the two side walls of the adjustment frame. The adjustment block is screwed onto the fourth threaded rod, and the bottom end of the adjustment block is connected to the sliding frame.

9. The positioning drilling device for door body processing according to claim 8, characterized in that, The adjustment frame has a first scale corresponding to the adjustment block on its side wall away from the clamping head.

10. The positioning drilling device for door body processing according to claim 7, characterized in that, The positioning groove is provided with a second scale corresponding to the positioning block on both sides.

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