A new template trepanning device

Abstract

The utility model discloses a novel template trepanning device relates to template trepanning technical field, including the handle, the top fixed mounting of handle has the pistol drill, the front end fixed mounting of pistol drill has the mounting sleeve, the front end of pistol drill is installed with adjustable drill bit through the mounting sleeve, adjustable drill bit includes the connecting shaft, the rear end fixed mounting of connecting shaft has the plug -in block. The utility model adopts the above -mentioned structure, and the device is moved along the radial by the adjustment module drive slide block and drives the sawtooth alloy blade, can realize the continuous adjustment of multiple hole diameters on the same adjustable drill bit, thoroughly gets rid of the limitation of traditional core drill one drill one diameter, and the construction personnel need not frequently replace whole drill bit, only need to rotate the adjusting handle and lock the screw rod, can complete the aperture adjustment quickly, the flexibility and adaptability of template trepanning operation are improved significantly, especially suitable for the complex construction scene of multiple specification aperture demand.

Description

Technical Field

[0001] This utility model belongs to the field of template hole-opening technology, and specifically relates to a novel template hole-opening device. Background Technology

[0002] In the field of template processing, core drills have become a common tool for creating slots due to their efficient large-diameter drilling capabilities. Their unique ring-shaped cutting edge design significantly improves the efficiency of large-diameter drilling by cutting the outer material while retaining the central core material. Compared with traditional twist drills, they can significantly reduce cutting resistance and energy consumption when processing holes with a diameter of 60mm or more. However, with the diversification of template processing needs, the limitations of this conventional core drill have gradually been exposed in practical applications.

[0003] When different sizes of holes need to be made on the template, the existing core drills cannot meet the need for flexible switching. Due to the structural design, each core drill is only suitable for a single hole diameter. If the hole diameter needs to be changed, the entire drill bit must be replaced. This process not only relies on a special wrench to disassemble the fastening parts, but also involves complicated operation steps, which consume a lot of time and manpower. Furthermore, the drill bit interface may be worn due to repeated disassembly and assembly, affecting the subsequent drilling accuracy and stability. Especially in construction scenarios with tight schedules, frequent replacement of drill bits will undoubtedly slow down the overall processing progress.

[0004] Furthermore, the use and carrying of existing core drills are significantly inconvenient. In engineering practice, different projects have significantly different requirements for template hole diameters. Construction workers often need to carry multiple sizes of core drills to cope with diverse tasks. These drill bits are of different sizes and numerous, which not only increases the burden of tool storage and transportation, but also easily leads to the loss or confusion of drill bits, further exacerbating the complexity of construction management. Therefore, there is an urgent need for a more flexible and convenient template hole-opening solution to break through the application bottleneck of existing technologies and improve the efficiency and convenience of template processing. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a novel template opening device to solve the problems raised in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A novel template opening device includes a handle, a pistol drill is fixedly mounted on the top of the handle, an mounting sleeve is fixedly mounted on the front end of the pistol drill, and an adjustable drill bit is mounted on the front end of the pistol drill through the mounting sleeve.

[0008] The adjustable drill bit includes a coupling shaft, a plug is fixedly installed at the rear end of the coupling shaft, the plug is inserted into the inside of the mounting sleeve, a mounting post is fixedly installed at the front end of the coupling shaft, an adjustable drill assembly is fixedly installed at equal intervals in a ring on the outer side of the mounting post, and an adjustment module is fixedly installed on the outer side of the adjustable drill assembly.

[0009] As a preferred technical solution, the top and bottom of the mounting sleeve are both threaded with countersunk hexagonal screws, and the mounting sleeve is used to install the insert block.

[0010] As a preferred technical solution, the adjustable drill set includes a fixed base, which is arranged in a ring at equal intervals and fixedly installed on the outside of the mounting column. A rail frame is fixedly installed on the outside of the fixed base. A lead screw is rotatably connected inside the rail frame. A slider is threadedly connected to the outer surface of the lead screw. A mounting base is fixedly installed on the side of the slider away from the pistol drill. A connecting plate is installed inside the mounting base by countersunk hexagonal screws. A serrated alloy blade is fixedly installed on the outer end of the connecting plate. The adjustment module is located at the outer end of the rail frame.

[0011] As a preferred technical solution, the top and bottom of the connecting plate are fixedly installed with reinforcing support arms, and the front end of the reinforcing support arms is connected to the serrated alloy blade.

[0012] As a preferred technical solution, the adjustment module includes a side plate, which is fixedly installed on the outer end of the rail frame. An adjustment handle is rotatably connected to the outer side of the side plate, and a locking screw is threaded to one side of the adjustment handle. The end of the locking screw passes through the adjustment handle.

[0013] As a preferred technical solution, the outer side of the side plate is provided with locking holes arranged in a ring at equal intervals, and the end of the locking screw is inserted into the locking hole.

[0014] As a preferred technical solution, the locking screw is a hand-tightening screw, the cross-sectional shape of the internal cavity of the slider and the rail frame is cross-shaped, and the outer surface corners of the rail frame, mounting column and fixing seat are rounded.

[0015] In summary, the present invention has the following main advantages:

[0016] First, this device drives the serrated alloy blade to move radially by adjusting the module drive slider, which can achieve continuous adjustment of multiple hole diameters on the same adjustable drill bit, completely getting rid of the limitation of traditional core drills that drill one diameter at a time. Construction personnel do not need to frequently change the entire drill bit. They only need to turn the adjustment handle and lock the screw to quickly complete the hole diameter adjustment, which significantly improves the flexibility and adaptability of template opening operations. It is especially suitable for complex construction scenarios with multiple hole diameter requirements.

[0017] Secondly, the adjustable design of this device makes it possible to replace multiple traditional drill bits with a single drill bit. This not only reduces the number of tools to carry and management costs, but also avoids the time wasted due to frequent drill bit replacements. The adjustment process does not require special tools, making operation simple and quick, and significantly shortening construction preparation time. At the same time, when the cutting edge wears out, the cutting edge assembly can be replaced independently without the need for complete scrapping, reducing operating costs and improving operational economy and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the adjustable drill bit structure of this utility model;

[0022] Figure 5 This is a utility model Figure 4 A magnified structural diagram at point A.

[0023] Reference numerals: 1. Grip; 2. Pistol drill; 3. Adjustable drill bit; 31. Coupling; 32. Insert block; 33. Mounting post; 34. Adjustable drill set; 341. Fixed base; 342. Rail frame; 343. Lead screw; 344. Slider; 345. Mounting base; 346. Connecting plate; 347. Serrated alloy blade; 348. Reinforcing support arm; 35. Adjustment module; 351. Side plate; 352. Adjustment handle; 353. Locking screw; 354. Locking hole; 4. Mounting sleeve; 5. Countersunk hex screw. Detailed Implementation

[0024] Example

[0025] refer to Figures 1 to 5 A novel template opening device according to this embodiment includes a handle 1, a pistol drill 2 fixedly installed on the top of the handle 1, an installation sleeve 4 fixedly installed on the front end of the pistol drill 2, and an adjustable drill bit 3 installed on the front end of the pistol drill 2 through the installation sleeve 4.

[0026] The adjustable drill bit 3 includes a coupling 31. A plug 32 is fixedly installed at the rear end of the coupling 31 and inserted into the mounting sleeve 4. A mounting post 33 is fixedly installed at the front end of the coupling 31. An adjustable drill assembly 34 is fixedly installed on the outer side of the mounting post 33 in a ring at equal intervals. An adjustment module 35 is fixedly installed on the outer side of the adjustable drill assembly 34. During use, the plug 32 at the rear end of the coupling 31 of the adjustable drill bit 3 is first inserted into the mounting sleeve 4 at the front end of the pistol drill 2. It is then tightened by countersunk hexagonal screws 5 at the top and bottom of the mounting sleeve 4 to achieve stable power transmission. If the opening diameter needs to be adjusted, the adjustment module 35 is operated. The adjustment handle 352 is rotated to drive the lead screw 343 inside the rail frame 342 to rotate. Because the lead screw 343 and the slider 344 are threaded together... The slider 344 slides along the cross-shaped cavity inside the rail frame 342, driving the mounting base 345 and the serrated alloy blade 347 to move radially, changing the circumferential diameter of the blade. After adjustment, the locking screw 353 is screwed into the corresponding locking hole 354 of the side plate 351 to fix the position. After starting the pistol drill 2, the power is transmitted to the adjustable drill set 34 through the coupling shaft 31, causing the serrated alloy blade 347 to rotate at high speed to cut the template. The outer rail frame 342 of the fixed base 341 provides support for the slider 344. The top and bottom reinforcing arms 348 of the connecting plate 346 enhance the structural strength of the blade. As the drill bit feeds, the required large-diameter slot is formed. When the blade is worn and needs to be replaced, the connecting plate 346 and the blade can be removed by loosening the screw inside the mounting base 345.

[0027] refer to Figures 1-5 The top and bottom of the mounting sleeve 4 are threaded with countersunk hexagonal screws 5. The mounting sleeve 4 is fitted with the insert block 32 through the countersunk hexagonal screws 5. During the use of this device, when connecting the adjustable drill bit 3 to the pistol drill 2, first insert the insert block 32 at the rear end of the coupling 31 into the mounting sleeve 4. At this time, the threaded holes at the top and bottom of the mounting sleeve 4 are aligned with the corresponding holes on the insert block 32. Use a tool to screw the countersunk hexagonal screws 5 into the threaded holes. As the screw is screwed in, the screw head gradually sinks into the countersunk hole on the surface of the mounting sleeve 4. At the same time, the shank of the screw is in close contact with the hole wall on the insert block 32 and generates axial tension, so that the insert block 32 and the mounting sleeve 4 fit tightly together. This threaded connection method utilizes the self-locking characteristic of the screw, which can effectively prevent the insert block 32 from loosening due to vibration or torque during the operation of the drill bit, ensuring stable power transmission between the adjustable drill bit 3 and the pistol drill 2. When it is necessary to disassemble the drill bit, unscrew the countersunk hexagonal screws 5 in the opposite direction to release the lock on the insert block 32 and achieve quick disassembly.

[0028] refer to Figures 4-5The adjustable drill set 34 includes a fixed base 341, which is arranged in a ring at equal intervals and fixedly installed on the outside of the mounting post 33. A rail frame 342 is fixedly installed on the outside of the fixed base 341. A lead screw 343 is rotatably connected inside the rail frame 342. A slider 344 is threadedly connected to the outer surface of the lead screw 343. A mounting base 345 is fixedly installed on the side of the slider 344 away from the pistol drill 2. A connecting plate 346 is installed inside the mounting base 345 by countersunk hexagonal screws 5. A serrated alloy blade 347 is fixedly installed on the outer end of the connecting plate 346. The adjusting module 35 is located on the outer end of the rail frame 342. Reinforcing support arms 348 are fixedly installed on the top and bottom of the connecting plate 346. The front end of the reinforcing support arm 348 is connected to the serrated alloy blade 347. During the use of this device, when the adjusting module 35 is activated, the adjusting handle 352 on the outer end of the rail frame 342 rotates, driving the internal lead screw 343 to rotate. Because the lead screw 343 is threaded with the slider 344... The slider 344 is connected to the cross-shaped cavity inside the rail frame 342. The slider 344 slides linearly along the rail frame 342, thereby driving the mounting base 345 and connecting plate 346 fixed to the slider 344 to move radially, realizing the position adjustment of the sawtooth alloy blade 347 and changing the opening diameter. After the adjustment is in place, the locking screw 353 is inserted into the corresponding locking hole 354 of the side plate 351 to limit the rotation of the screw 343 to fix the position of the blade. When drilling, the power of the pistol drill 2 is transmitted to the mounting column 33 through the coupling shaft 31, which drives the adjustable drill set 34 arranged in a ring to rotate synchronously. The sawtooth alloy blade 347 cuts the template. During this process, the fixed base 341 provides stable support for the rail frame 342. The reinforcing support arms 348 at the top and bottom of the connecting plate 346 are connected to the sawtooth alloy blade 347 to enhance the blade's resistance to deformation. The rounded corner design of the rail frame 342, mounting column 33 and fixed base 341 reduces motion interference and ensures stable and efficient operation of the drill bit.

[0029] refer to Figures 4-5The adjustment module 35 includes a side plate 351, which is fixedly installed on the outer end of the rail frame 342. An adjustment handle 352 is rotatably connected to the outer side of the side plate 351. A locking screw 353 is threadedly connected to one side of the adjustment handle 352, and the end of the locking screw 353 passes through the adjustment handle 352. Locking holes 354 are evenly spaced and arranged in a ring on the outer side of the side plate 351. The end of the locking screw 353 is inserted into the locking hole 354. The locking screw 353 is a hand-tightening screw. The cross-sectional shape of the internal cavity of the slider 344 and the rail frame 342 is cross-shaped. The corners of the outer surfaces of the rail frame 342, the mounting column 33, and the fixing seat 341 are all rounded. During the use of this device, when the adjustment module 35 is working, rotating the adjustment handle 352, which is rotatably connected to the side plate 351, drives the lead screw 343, which is coaxially mounted with the adjustment handle 352, to rotate synchronously. 344 adopts a threaded fit, and the slider 344 is adapted to the cross-shaped cavity inside the rail frame 342. The rotation of the lead screw 343 is converted into the linear movement of the slider 344 along the rail frame 342, which in turn drives the mounting base 345, the connecting plate 346, and the serrated alloy blade 347 to move radially, thereby realizing the adjustment of the hole diameter. When the required hole diameter is adjusted, the hand-tight locking screw 353 is turned so that its end passes through the adjusting handle 352 and is inserted into the corresponding locking hole 354 on the outside of the side plate 351. The cooperation between the locking screw 353 and the locking hole 354 restricts the rotation of the adjusting handle 352 and the lead screw 343, thereby fixing the position of the slider 344 and ensuring that the serrated alloy blade 347 remains stable during the drilling process. In addition, the rounded corner design of the outer surface of the rail frame 342, the mounting column 33, and the fixing base 341 can effectively reduce the friction and stress concentration between components, ensuring smooth adjustment and overall structural stability.

[0030] Operating principle and advantages: During use, the adjustable drill bit 3 is first connected to the pistol drill 2. The insert block 32 at the rear end of the coupling 31 is inserted into the mounting sleeve 4 at the front end of the pistol drill 2. The countersunk hexagonal screws 5 at the top and bottom of the mounting sleeve 4 are used to tighten the insert block 32 and the mounting sleeve 4, ensuring a stable power transmission between the adjustable drill bit 3 and the pistol drill 2. If the opening diameter needs to be adjusted, the adjustment module 35 is operated for adjustment. Turning the adjustment handle 352 drives the lead screw 343 inside the rail frame 342 to rotate. Since the lead screw 343 is threadedly connected to the slider 344... Driven by the lead screw 343, the slider 344 slides along the internal cavity of the rail frame 342. Since the slider 344 is fixed to the mounting base 345, its movement causes the mounting base 345 and the serrated alloy blade 347 to move radially, changing the circumferential diameter of the circle formed by the serrated alloy blade 347 and thus adjusting the opening diameter. After adjustment, the locking screw 353 is screwed into the corresponding locking hole 354 on the side plate 351. The locking screw 353 limits the rotation of the lead screw 343 during drilling, ensuring the position of the serrated alloy blade 347. After adjustment... The handle 1 can be gripped, and then the pistol drill 2 can be started. The power of the pistol drill 2 is transmitted to the adjustable drill set 34 through the coupling 31. The serrated alloy blade 347 rotates at high speed to cut the template. During the cutting process, the rail frame 342 on the outside of the fixed seat 341 locks the slider 344 and the lead screw 343, providing support and ensuring the stability of the movement of the serrated alloy blade 347. At the same time, the reinforcing support arms 348 at the top and bottom of the connecting plate 346 are connected to the serrated alloy blade 347 to enhance the structural strength of the blade and reduce the risk of blade deformation or damage during the cutting process. The head continues to feed, and the serrated alloy insert 347 cuts the template material in the circumferential direction to form the required large-diameter slot. When the serrated alloy insert 347 wears out after long-term use and needs to be replaced, use a tool wrench to loosen the countersunk hex screws 5 at the top and bottom of the mounting sleeve 4, and pull out the insert block 32 of the adjustable drill bit 3 from the mounting sleeve 4 to remove the drill bit. If only the serrated alloy insert 347 needs to be replaced, loosen the countersunk hex screws 5 inside the mounting base 345 used to fix the connecting plate 346, and remove the connecting plate 346 and the insert for replacement.

[0031] By adjusting the module 35 to drive the slider 344, the serrated alloy blade 347 moves radially, allowing for multiple hole diameter adjustments on the same adjustable drill bit 3. This eliminates the need for frequent replacement of the entire drill bit. Compared to traditional core drills that require multiple drill bits of different specifications, this device can quickly adapt to different hole diameter requirements, significantly improving the flexibility of template drilling operations. Traditional core drill replacement requires a special wrench, which is cumbersome. This device uses countersunk hexagonal screws 5 to fix the insert 32 and mounting sleeve 4, and the adjusting handle 352 and locking screw 353 to achieve hole diameter adjustment and fixation. The operating tools are simple, and the adjustment and disassembly processes do not require complicated steps, greatly shortening preparation time and improving work efficiency. Since a single adjustable drill bit 3 can cover multiple hole diameter requirements, construction personnel do not need to carry multiple core drills of different specifications, reducing... The reduced number and weight of tools decreases the difficulty of tool storage and transportation, while avoiding the problems of drill bit loss and confusion caused by carrying a large number of drill bits, thus facilitating construction management. The adjustable drill set 34's central rail frame 342 provides stable guidance for the slider 344, the reinforced support arm 348 enhances the structural strength of the serrated alloy blade 347, and the locking design of the adjustment module 35 prevents the lead screw 343 from rotating during drilling. The multiple structural designs ensure stable operation of the drill bit during drilling, reducing hole diameter deviation caused by drill bit shaking or loose parts, and improving drilling accuracy and quality. When the serrated alloy blade 347 wears and needs to be replaced, the connecting plate 346 and the blade can be removed simply by loosening the countersunk hexagonal screw 5 inside the mounting base 345, without disassembling the entire drill bit, reducing maintenance difficulty, shortening maintenance time, and ensuring the continuity of template drilling operations.

Claims

1. A novel template opening device, characterized in that: Includes a grip (1), on the top of the grip (1) a pistol drill (2) is fixedly installed, and a mounting sleeve (4) is fixedly installed at the front end of the pistol drill (2). An adjustable drill bit (3) is installed at the front end of the pistol drill (2) through the mounting sleeve (4). The adjustable drill bit (3) includes a connecting shaft (31), a plug (32) is fixedly installed at the rear end of the connecting shaft (31), the plug (32) is inserted into the inside of the mounting sleeve (4), a mounting column (33) is fixedly installed at the front end of the connecting shaft (31), an adjustable drill assembly (34) is fixedly installed on the outer side of the mounting column (33) in a ring at equal intervals, and an adjustment module (35) is fixedly installed on the outer side of the adjustable drill assembly (34).

2. The novel template opening device according to claim 1, characterized in that: The top and bottom of the mounting sleeve (4) are threaded with countersunk hexagonal screws (5), and the mounting sleeve (4) is used to install the insert (32).

3. The novel template opening device according to claim 2, characterized in that: The adjustable drill set (34) includes a fixed seat (341), which is fixedly installed on the outside of the mounting column (33) in a ring with equal spacing. A rail frame (342) is fixedly installed on the outside of the fixed seat (341). A lead screw (343) is rotatably connected inside the rail frame (342). A slider (344) is threadedly connected to the outer surface of the lead screw (343). A mounting seat (345) is fixedly installed on the side of the slider (344) away from the pistol drill (2). A connecting plate (346) is installed inside the mounting seat (345) by countersunk hexagonal screws (5). A serrated alloy blade (347) is fixedly installed on the outer end of the connecting plate (346). The adjustment module (35) is located on the outer end of the rail frame (342).

4. The novel template opening device according to claim 3, characterized in that: The top and bottom of the connecting plate (346) are fixedly installed with reinforcing support arms (348), and the front end of the reinforcing support arms (348) is connected to the serrated alloy blade (347).

5. A novel template opening device according to claim 4, characterized in that: The adjustment module (35) includes a side plate (351), which is fixedly installed on the outer end of the rail frame (342). An adjustment handle (352) is rotatably connected to the outer side of the side plate (351). A locking screw (353) is threadedly connected to one side of the adjustment handle (352), and the end of the locking screw (353) passes through the adjustment handle (352).

6. A novel template opening device according to claim 5, characterized in that: The side plate (351) has locking holes (354) arranged in a ring at equal intervals on its outer side, and the end of the locking screw (353) is inserted into the locking hole (354).

7. A novel template opening device according to claim 6, characterized in that: The locking screw (353) is a hand-tightening screw, the internal cavity cross-section of the slider (344) and the rail frame (342) is cross-shaped, and the outer surface corners of the rail frame (342), the mounting column (33) and the fixing seat (341) are rounded.

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