Combined pagoda drill structure

Abstract

The utility model relates to the field of drill bit tools, and particularly discloses a combined pagoda drill structure which comprises a drill handle, a plurality of cutting edge bodies and a drill tip, the drill handle comprises a sleeve rod, a connecting base and a fixing rod, sleeve rod inserting holes are formed in the middles of the cutting edge bodies, the cutting edge bodies are inserted into the sleeve rod through the sleeve rod inserting holes, and a connecting rod is arranged at the bottom of the drill tip. The threaded hole is formed in the middle of one end of the sleeve rod, the connecting rod is in threaded connection with the threaded hole, the cutting edge bodies can be separated from the drill handle, the cutting edge bodies of different sizes can be replaced at any time, hole drilling of different sizes can be adapted, and due to the fact that the maximum size of the cutting edge can be set, deep holes can be drilled.

Description

Technical Field

[0001] This utility model relates to the field of drill tools, specifically to a combined pagoda drill structure. Background Technology

[0002] Step drills, also known as step drills or pagoda drills, are mainly used for drilling thin steel plates up to 3mm thick. One drill bit can replace multiple drill bits, and can process holes of different diameters as needed. Large holes can be processed in one go without changing drill bits or drilling positioning holes.

[0003] In actual production, there may be steel plates with a size greater than 3mm but not more than 5mm. If a tower drill is used to drill such steel plates, it may drill into the cutting edge of the next step, causing the hole to enlarge. Therefore, a tower drill structure is needed to solve this problem. Utility Model Content

[0004] This utility model aims to solve the technical problems mentioned in the background section above, and proposes the following technical solutions:

[0005] A combined pagoda drill structure includes a drill shank, several cutting edges, and a drill tip. The drill shank includes a sleeve, a connecting base, and a fixing rod. The sleeve and fixing rod are respectively fixed at the center of both ends of the connecting base. The connecting base has several first positioning slots at one end of the sleeve. Several chip removal grooves are provided on the side of the cutting edges. A sleeve insertion hole is provided in the middle of the cutting edges. Several second positioning slots are provided at one end of the cutting edges. Several positioning pins are provided at the other end of the cutting edges. The positioning pins, second positioning slots, and first positioning slots correspond in position, size, and number. A connecting rod is provided at the bottom of the drill tip. A threaded hole is provided in the middle of one end of the sleeve. The connecting rod is threadedly connected to the threaded hole.

[0006] Preferably, the cross-section of the fixing rod is hexagonal.

[0007] Preferably, the connecting base is a frustum structure with one end of the sleeve rod being larger and the other end of the fixing rod being smaller.

[0008] Preferably, a locking block is provided at the bottom of the drill tip, the locking block is distributed around the connecting rod, and the cross-section of the locking block is a trapezoidal structure.

[0009] Preferably, a rubber pad is provided at the bottom of the second positioning slot.

[0010] The beneficial effects of this utility model are:

[0011] 1. By setting the cutting edge body to be separable from the drill shank, different sizes of cutting edge bodies can be replaced at any time, which can adapt to drilling holes of different sizes. Furthermore, because the maximum cutting edge size can be set, relatively deep holes can be drilled.

[0012] 2. By setting a locking block at the bottom of the drill tip, the locking block can hold the cutting edge when the drill tip is tightened. After the drill tip is installed, there will be no gap between the cutting edges, thus preventing the cutting edges from shaking during drilling.

[0013] 3. By setting a rubber pad at the bottom of the second positioning slot, the gap between the cutting edges can be effectively reduced, preventing the cutting edges from shaking during drilling. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention in Embodiment 1;

[0016] Figure 3 This is a schematic diagram of the drill tip structure in Example 2;

[0017] Figure 4 This is a schematic diagram of the cutting edge structure in Example 3.

[0018] In the diagram: 1. Drill shank; 1-1. Sleeve rod; 1-2. Connecting base; 1-3. Fixing rod; 2. Cutting edge; 2-1. Chip removal groove; 2-2. Sleeve rod insertion hole; 2-3. Second positioning slot; 2-4. Positioning pin; 3. Drill tip; 3-1. Connecting rod; 3-2. Locking block; 4. First positioning slot; 5. Threaded hole; 6. Rubber pad. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be understood that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described by the terms "fixed connection" and "fixed setting" include, but are not limited to, "welding," "riveting," "adhesion," and "threaded connection." The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0021] The terms “upper,” “lower,” “front,” “back,” “left,” “right,” “top,” “bottom,” “inner,” and “outer,” etc., 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] Example 1

[0023] Reference Figure 1 A combined pagoda drill structure includes a drill shank 1, multiple sets of cutting edges 2, and a drill tip 3. The radii of the multiple sets of cutting edges 2 gradually increase from top to bottom. The drill shank 1 includes a sleeve 1-1, a connecting base 1-2, and a fixing rod 1-3. The sleeve 1-1 and the fixing rod 1-3 are respectively fixed at the center of both ends of the connecting base 1-2. The connecting base 1-2 is provided with a first positioning slot 4 at one end of the sleeve 1-1. The cutting edges 2 are provided with chip removal grooves 2-1 on their sides. The cutting edges 2 are provided with a sleeve insertion hole 2-2 in the middle. The cutting edges 2 are provided with a second positioning slot 2-3 at one end and a positioning pin 2-4 at the other end. The positioning pin 2-4, the second positioning slot 2-3, and the first positioning slot 4 are corresponding in position, size, and number. The drill tip 3 is provided with a connecting rod 3-1 at the bottom. The sleeve 1-1 is provided with a threaded hole 5 in the middle of one end, and the connecting rod 3-1 is threadedly connected to the threaded hole 5.

[0024] Preferably, the cross-section of the fixing rod 1-3 is a hexagonal structure.

[0025] Preferably, the connecting base 1-2 is a frustum structure with one end of the sleeve rod 1-1 being larger and the other end of the fixing rod 1-3 being smaller.

[0026] In actual operation, in case one, if a hole of a specific diameter needs to be drilled, first select a cutting edge 2 of appropriate size according to the required hole size, and then insert the corresponding cutting edge 2 into the sleeve 1-1 on the drill shank 1 in the order of largest to smallest. During the insertion process, adjust the direction and insert the positioning pins 2-4 on the cutting edge 2 into the first positioning slot 4 and the second positioning slot 2-3 respectively. Then tighten the drill tip 3 on the top of the sleeve 1-1.

[0027] This replacement method allows for the replacement of cutting edges of different sizes at any time, enabling the drilling of holes of different sizes.

[0028] Scenario 2: When the hole to be drilled is deep and has a large radius, and a conventional pagoda drill cannot complete the task, the cutting edge 2 can be inserted into the sleeve 1-1 on the drill shank 1 in the order of smallest to largest to smallest. Figure 2 At this point, the drill bit has a structure that is small at both ends and large in the middle. At this point, a deeper hole can be drilled through the cutting edge 2 located in the middle part.

[0029] Example 2

[0030] Reference Figure 3 The difference between this embodiment and embodiment one is that a locking block 3-2 is provided at the bottom of the drill tip 3. The locking block 3-2 is distributed around the connecting rod 3-1. The cross section of the locking block 3-2 is trapezoidal. The locking block 3-2 can hold the cutting edge 2 when the drill tip 3 is tightened. After the drill tip 3 is installed, there will be no gap between the cutting edge 2, which will prevent the cutting edge 2 from shaking when drilling.

[0031] Example 3

[0032] Reference Figure 4 The difference between this embodiment and the first embodiment is that a rubber pad 6 is provided at the bottom of the second positioning slot 2-3. The rubber pad can effectively reduce the gap between the cutting edge bodies 2 and prevent the cutting edge bodies 2 from shaking during drilling.

Claims

1. A combined pagoda drill structure, comprising a drill shank (1), a plurality of cutting edges (2), and a drill tip (3), characterized in that, The drill shank (1) includes a sleeve (1-1), a connecting base (1-2), and a fixing rod (1-3). The sleeve (1-1) and the fixing rod (1-3) are respectively fixed at the center of both ends of the connecting base (1-2). The connecting base (1-2) is provided with several first positioning slots (4) at one end of the sleeve (1-1). Several chip removal grooves (2-1) are provided on the side of the cutting edge (2). A sleeve insertion hole (2-2) is provided in the middle of the cutting edge (2). The cutting edge (2) is provided with a plurality of second positioning slots (2-3) at one end and a plurality of positioning pins (2-4) at the other end. The positioning pins (2-4), the second positioning slots (2-3) and the first positioning slots (4) are corresponding in position, size and number. The drill tip (3) is provided with a connecting rod (3-1) at the bottom. The sleeve (1-1) is provided with a threaded hole (5) in the middle of one end. The connecting rod (3-1) is threadedly connected to the threaded hole (5).

2. The combined pagoda drill structure according to claim 1, characterized in that, The cross-section of the fixing rod (1-3) is hexagonal.

3. The combined pagoda drill structure according to claim 1, characterized in that, The connecting base (1-2) is a frustum structure with one end of the sleeve rod (1-1) being larger and the other end of the fixing rod (1-3) being smaller.

4. The combined pagoda drill structure according to claim 2, characterized in that, The bottom of the drill tip (3) is provided with a locking block (3-2), which is distributed around the connecting rod (3-1). The cross section of the locking block (3-2) is trapezoidal.

5. A combined pagoda drill structure according to claim 1, characterized in that, A rubber pad (6) is provided at the bottom of the second positioning slot (2-3).

Images