Umbrella type round hole punching drill bit

Abstract

The utility model relates to the field of building construction, and particularly discloses an umbrella type round hole punching drill bit which comprises a telescopic center shaft. The upper ends of the multiple hinged telescopic assemblies are hinged to the upper end of the center shaft, and the multiple hinged telescopic assemblies surround the side wall of the center shaft; the cutting tools correspond to the hinged telescopic assemblies one to one, and the cutting tools are vertically connected with the ends, away from the center shaft, of the hinged telescopic assemblies. According to the scheme, the cutting tool stably supported by the hinged telescopic assembly stably rotates around the center shaft, the cutting tool can stably cut the drilling position, and large-size hole punching treatment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an umbrella-type round hole opening drill bit. Background Technique

[0002] During on-site construction and decoration, in order to meet the design requirements, it is inevitable to make holes in wooden boards or decorative panels. Conventional drilling tools include hole saws, engraving machines, milling machines, and drilling machines. Among them, the size of the hole saw is too fixed and needs to be set to meet the on-site construction requirements to the greatest extent. However, when the hole size does not match the size of the hole saw, the hole saw cannot meet the construction requirements; engraving machines and milling machines are suitable for processing at fixed positions and are not suitable for on-site construction. Moreover, their configuration costs are high and their flexibility is not strong.

[0003] The drill is the most suitable tool for on-site drilling. However, most conventional drill bits are only suitable for drilling small holes. For larger round holes, small-sized drill bits are difficult to construct, and there is a lack of a method for drilling large-diameter round holes in one go. Content of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides an umbrella-type round hole opening drill bit to solve the problem that most conventional drill bits are only suitable for drilling small holes, and it is difficult for small-sized drill bits to construct larger round holes.

[0005] To achieve the above purpose, the basic scheme of the utility model is as follows: The umbrella-type round hole opening drill bit includes:

[0006] A telescopic central shaft;

[0007] A number of articulated telescopic components, the upper ends of the number of articulated telescopic components are all articulated with the upper end of the central shaft, and the number of articulated telescopic components surround the side wall of the central shaft;

[0008] A number of cutting tools, the cutting tools correspond to the articulated telescopic components one by one, and the cutting tools are vertically connected to the ends of the articulated telescopic components away from the central shaft.

[0009] The technical principle of the utility model is as follows: When using the umbrella-type round hole opening drill bit, connect the end of the central shaft to the drilling tool; then determine the center and radius of the drilling position on the wooden board or decorative panel; then adjust the articulated telescopic components according to the center and radius of the drilling position. After the adjustment is completed, make the lower end of the central shaft abut against the center of the drilling position on the wooden board or decorative panel, start the drilling tool, the drilling tool drives the entire umbrella-type round hole opening drill bit to rotate through the central shaft, and the cutting tools stably supported by the articulated telescopic components rotate stably around the central shaft. The cutting tools can stably cut the drilling position to achieve the opening treatment of large-sized holes.

[0010] In the above process, according to the requirements of the drilling size, the position of the cutting tool can be adjusted, so that larger holes can be drilled, improving the drilling efficiency and accuracy of large-sized holes.

[0011] Furthermore, the articulated telescopic assembly includes:

[0012] A leg, which is inclined, and the upper end of the leg is hinged to the outer wall of the upper end of the central axis;

[0013] A fan bone, which is inclined, and the upper end of the fan bone is hinged to the middle part of the leg;

[0014] A sliding part vertically slidably mounted on the central axis, and the side wall of the sliding part is hinged to the lower end of the fan bone;

[0015] A support part for fixing the cutting tool, and one end of the support part and the lower end of the leg can be locked and connected;

[0016] The leg, the fan bone, the support part and the cutting tool are located in the same vertical plane.

[0017] With the above settings, the fan bone can cooperate with the sliding part to support the leg and the support part. When controlling the position of the sliding part on the central axis, the horizontal position of the support part can be adjusted, and then the horizontal position of the cutting tool can be controlled to adapt to the drilling of holes with different radii. The adjustment is convenient and reliable; at the same time, by adjusting the position between one end of the support part and the lower end of the leg, the cutting tool can be kept in a vertical cutting state with the wooden board or decorative panel, making the subsequent cutting smooth and with high cutting accuracy.

[0018] Furthermore, the support part includes:

[0019] A support rod, which is horizontally arranged, and the middle part of the support rod is detachably connected to the cutting tool;

[0020] A first bolt, which is detachably installed at the end of the support rod and the lower end of the leg.

[0021] With the above settings, when adjusting the angle between the support rod and the leg, loosen the first bolt, rotate the support rod to the horizontal state, and then the first bolt locks the support rod and the leg again, and the first bolt makes the cooperation between the support rod and the leg precise.

[0022] Furthermore, a sliding groove for horizontally sliding and adjusting the position of the cutting tool is provided at the middle part of the support rod, and a number of second bolts that can abut against the support rod are provided on the cutting tool.

[0023] With the above settings, when it is necessary to finely adjust the position of the cutting tool according to the radius position at the drilling point, loosen the second bolt. At this time, control the cutting tool to slide horizontally along the chute. When the cutting tool is accurately located at the circumference of the drilling hole, lock the second bolt between the cutting tool and the support rod to achieve accurate positioning of the cutting tool.

[0024] Furthermore, the sliding part includes:

[0025] A sliding ring, the outer wall of the sliding ring is hinged to the lower end of the fan bone, and the inner wall of the sliding ring is in coaxial sliding contact with the outer wall of the central shaft;

[0026] A third bolt, the third bolt can pass through the sliding ring and abut against the outer wall of the central shaft.

[0027] With the above settings, when adjusting the position of the sliding ring, after reaching the position at the required radius edge, screw the third bolt through the sliding ring and tighten it against the outer wall of the central shaft to lock the positions of the support rod, the fan bone and the leg, and stably support the cutting of the cutting tool.

[0028] Furthermore, the central shaft includes:

[0029] A fixed rod, the lower end of the fixed rod is hollow to form a telescopic cavity, and the sliding ring is slidably mounted on the fixed rod;

[0030] A spring, the spring is coaxially installed in the telescopic cavity of the fixed rod;

[0031] A positioning rod, the upper end of the positioning rod is slidably mounted coaxially in the telescopic cavity of the fixed rod, and the upper end of the positioning rod abuts against or is connected to the lower end of the spring.

[0032] With the above settings, when drilling a hole in a wooden board or a decorative panel, the conical end of the positioning rod abuts against the center of the drilling hole, so that the cutting tool can accurately contact the edge to be cut of the wooden board or the decorative panel.

[0033] Furthermore, a ring-shaped flange is provided on the outer wall of the lower end of the positioning rod, and the flange can abut against the lower end of the fixed rod.

[0034] With the above settings, the flange can prevent the positioning rod from extending too much into the telescopic cavity, so that the cutting tool continuously contacts the wooden board or the decorative panel during the cutting process.

[0035] Furthermore, the number of the articulated telescopic components is greater than or equal to three, and several articulated telescopic components are circumferentially and uniformly arranged around the central shaft.

[0036] With the above settings, multiple articulated telescopic components support the cutting tool, increasing the stability during the hole opening process. Description of the Drawings

[0037] Figure 1This is a schematic structural diagram of the umbrella-shaped round-hole drilling bit in the main viewing direction of the embodiment of the present utility model.

[0038] Figure 2 This is a schematic structural diagram of the umbrella-shaped round-hole drilling bit in the top viewing direction of the embodiment of the present utility model.

[0039] In the above-mentioned drawings: fixed rod 10, telescopic cavity 101, spring 102, positioning rod 103, flange 104, cutting tool 20, leg 30, fan bone 301, support rod 302, first bolt 303, second bolt 304, sliding ring 305. Specific embodiments

[0040] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.

[0041] This embodiment is basically as Figure 1 and Figure 2 shown. The embodiment of the present utility model proposes an umbrella-shaped round-hole drilling bit, which includes a telescopic central axis, three articulated telescopic components, and three cutting tools 20. The cutting tools 20 correspond to the articulated telescopic components one by one. The central axis includes a fixed rod 10, a spring 102, and a positioning rod 103. The lower end of the fixed rod 10 is hollow to form a telescopic cavity 101. The spring 102 is coaxially installed in the telescopic cavity 101 of the fixed rod 10. The upper end of the positioning rod 103 is coaxially and slidably installed in the telescopic cavity 101 of the fixed rod 10, and the upper end of the positioning rod 103 abuts against the lower end of the spring 102. A ring-shaped flange 104 is provided on the outer wall of the lower end of the positioning rod 103. The flange 104 can abut against the lower end of the fixed rod 10. At the same time, the lower end of the positioning rod 103 is in a conical head shape, which is convenient for the lower end of the positioning rod 103 to be stably limited on the wooden board or decorative panel.

[0042] At the same time, as Figure 2 shown, the number of the articulated telescopic components is three, and the three articulated telescopic components are circumferentially and evenly arranged around the central axis.

[0043] As Figure 1 and Figure 2As shown in the figure, the articulated telescopic assembly includes a leg 30, a fan bone 301, a sliding part vertically and slidably mounted on the central axis, and a support part for fixing the cutting tool 20. The support part includes a support rod 302 and a first bolt 303. The sliding part includes a sliding ring 305 and a third bolt. The sliding ring 305 is slidably mounted on the fixed rod 10, and the third bolt can pass through the sliding ring 305 and abut against the outer wall of the central axis. Both the leg 30 and the fan bone 301 are inclined. The upper end of the leg 30 is hinged to the outer wall of the upper end of the central axis, the upper end of the fan bone 301 is hinged to the middle part of the leg 30, and the side wall of the sliding ring 305 is hinged to the lower end of the fan bone 301. The support rod 302 is horizontally arranged, and the first bolt 303 is horizontally penetrated and threadedly mounted at the end of the support rod 302 and the lower end of the leg 30, as Figure 2 shown, a chute for horizontally sliding and adjusting the position of the cutting tool 20 is provided at the middle part of the support rod 302. Two second bolts 304 that can abut against the support rod 302 are provided on the cutting tool 20. The cutting tool 20 is vertically arranged on the support rod 302.

[0044] In addition, the leg 30, the fan bone 301, the support part and the cutting tool 20 are located in the same vertical plane.

[0045] When the umbrella-type round-hole drilling bit in this embodiment is in use, first install the end of the fixed rod 10 on the drilling tool, and then determine the center and radius of the drilling position on the wooden board or decorative panel. Then, adjust the articulated telescopic assembly according to the center and radius of the drilling position. At this time, control the vertical height of the sliding ring 305 so that the fan bone 301 drives the leg 30 to rotate in the vertical or horizontal direction, thereby adjusting the position of the support rod 302 in the horizontal diameter direction of the drilling. At the same time, after reaching the position at the edge of the required radius, screw the third bolt through the sliding ring 305 and abut it tightly against the outer wall of the central axis to lock the positions of the support rod 302, the fan bone 301 and the leg 30.

[0046] Then, according to the included angle between the support rod 302 and the leg 30, loosen the first bolt 303. After rotating the support rod 302 to the horizontal state, the first bolt 303 locks the support rod 302 and the leg 30 again, so that the cutting tool 20 is kept in a vertical cutting state with the wooden board or decorative panel, making the subsequent cutting smooth and with high cutting accuracy.

[0047] When it is necessary to finely adjust the position of the cutting tool 20 according to the radius position of the drilling, loosen the second bolt 304. At this time, control the cutting tool 20 to horizontally slide along the chute. When the cutting tool 20 is accurately located at the circumference of the drilling, lock the second bolt 304 between the cutting tool 20 and the support rod 302 to achieve precise positioning of the cutting tool 20.

[0048] When drilling a wooden board or a decorative panel, the conical end of the positioning rod 103 abuts against the center of the drilling position, so that the cutting tool 20 can contact the edge to be cut of the wooden board or the decorative panel. At this time, the drilling tool is started, and the drilling tool drives the entire umbrella-shaped round hole drilling bit to rotate through the fixing rod 10. The three cutting tools 20 stably supported by the articulated telescopic assembly rotate stably around the central axis. The cutting tool 20 can stably cut the drilling position to realize the opening process of large-size holes.

[0049] In the above process, the position of the cutting tool 20 can be adjusted according to the requirements of the drilling size, and then larger holes can be drilled to improve the drilling efficiency and drilling accuracy.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Umbrella-type round hole drilling drill bit, characterized in that: include: retractable center axis; A plurality of hinged telescopic assemblies, the upper ends of the plurality of hinged telescopic assemblies are hinged to the upper end of the central axis, and the plurality of hinged telescopic assemblies surround the side walls of the central axis; A plurality of cutting tools are provided, wherein the cutting tools correspond to the articulated telescopic components one by one, and the cutting tools are vertically connected to one end of the articulated telescopic components away from the central axis.

2. The umbrella-type round hole drilling drill bit according to claim 1, characterized in that: The articulated telescopic assembly comprises: The legs are tilted and the upper ends of the legs are hinged to the upper outer wall of the central shaft; The fan ribs are arranged obliquely, and the upper ends of the fan ribs are hinged to the middle parts of the legs; A sliding part vertically slidably mounted on the central axis, wherein the side wall of the sliding part is hinged to the lower end of the fan rib; A support portion for fixing the cutting tool, wherein one end of the support portion is lockably connected to the lower end of the support leg; The supporting legs, the fan ribs, the supporting part and the cutting tool are located on the same vertical plane.

3. The umbrella-type round hole drilling drill bit according to claim 2, characterized in that: The support portion comprises: A support rod, the support rod is horizontally arranged, and the middle part of the support rod is detachably connected to the cutting tool; A first bolt is detachably mounted on the end of the support rod and the lower end of the support leg.

4. The umbrella-type round hole drilling drill bit according to claim 3, characterized in that: A slide groove for horizontally sliding and adjusting the position of the cutting tool is arranged at the middle of the support rod, and a plurality of second bolts that can abut against the support rod are arranged on the cutting tool.

5. The umbrella-type round hole drilling drill bit according to claim 4, characterized in that: The sliding portion comprises: A sliding ring, wherein the outer wall of the sliding ring is hinged to the lower end of the fan rib, and the inner wall of the sliding ring is in coaxial sliding contact with the outer wall of the central shaft; A third bolt can pass through the sliding ring and abut against the outer wall of the central shaft.

6. The umbrella-type round hole drilling drill bit according to claim 5, characterized in that: The central axis includes: A fixed rod, the lower end of which is hollow and forms a telescopic cavity, and a sliding ring is slidably mounted on the fixed rod; A spring, wherein the spring is coaxially mounted in the telescopic cavity of the fixed rod; The upper end of the positioning rod is coaxially slidably installed in the telescopic cavity of the fixed rod, and the upper end of the positioning rod is against or connected to the lower end of the spring.

7. The umbrella-type round hole drilling drill bit according to claim 6, characterized in that: An annular flange is arranged on the outer wall of the lower end of the positioning rod, and the flange can abut against the lower end of the fixing rod.

8. The umbrella-type round hole drilling drill bit according to any one of claims 1 to 7, characterized in that: The number of the articulated telescopic components is greater than or equal to three, and the plurality of articulated telescopic components are evenly arranged circumferentially around the central axis.

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