Integrated high-speed forming stepped drill

Abstract

This utility model discloses an integrated high-speed forming stepped drill, comprising: a stepped drill body and an internal heat dissipation assembly; the stepped drill body includes a lower drill bit, a connecting shank fixedly connected in the middle of the drill bit, and a chip removal groove opened on one side of the drill bit. The integrated high-speed forming stepped drill of this utility model has a pre-reserved heat dissipation cavity inside the drill bit, a heat-conducting cone fitted to its inner wall, and a heat-conducting straight cylinder sleeved on the connecting shank inside the heat dissipation cavity. This allows the heat generated inside the drill bit during use to be conducted to the heat-conducting cone and the heat-conducting straight cylinder respectively. This, in conjunction with the external heat dissipation fins at the outer end of the heat-conducting cone and the internal heat dissipation fins at the outer end of the heat-conducting straight cylinder, enables rapid outward heat dissipation, improving the heat dissipation effect. Simultaneously, during high-speed forming drilling, the multiple sets of curved external heat dissipation fins on the top of the high-speed rotating drill bit can also uniformly contact the airflow and drive the airflow inward as it rotates at high speed, accelerating heat dissipation and improving the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of stepped drilling technology, specifically an integrated high-speed forming stepped drill. 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. They can process holes of different diameters as needed and can complete the processing of large holes in one go without changing drill bits or drilling positioning holes. The one-piece high-speed forming step drill can achieve rapid drilling of materials under high-speed conditions.

[0003] Existing one-piece high-speed forming step drills, such as the one disclosed in CN215902795U, have a rotating structure that disconnects the connecting part and the adapter. However, the internal structure of this step drill is solid, which makes it difficult to quickly conduct and dissipate the heat generated inside the hole during use. Therefore, we propose an one-piece high-speed forming step drill. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] An integrated high-speed forming stepped drill includes: a stepped drill body and an internal heat dissipation assembly; the stepped drill body includes a lower drill bit, a connecting shank fixedly connected in the middle of the drill bit, and a chip removal groove opened on one side of the drill bit; the internal heat dissipation assembly includes a heat dissipation cavity reserved in the drill bit, a heat-conducting cone movably installed in the heat dissipation cavity, an upper heat-conducting ring fixedly connected to the upper part of the heat-conducting cone, multiple sets of external heat dissipation fins arranged and fixedly installed at the upper end of the upper heat-conducting ring, a heat-conducting straight cylinder movably installed at the outer end of the connecting shank, and internal heat dissipation fins arranged and fixedly installed at the outer end of the heat-conducting straight cylinder.

[0007] Preferably, a lower heat-conducting ring is also fixedly connected to the bottom of the heat-conducting straight cylinder.

[0008] Preferably, a limiting ring is fixedly connected to the top of the heat-conducting straight cylinder, and the limiting ring is welded and fixed to the connecting handle.

[0009] Preferably, the outer heat dissipation fins are all curved structures, and the inner heat dissipation fins are strip structures.

[0010] Preferably, the heat-conducting cone is attached to the inner wall of the heat dissipation cavity, and the upper heat-conducting ring is welded to the drill bit.

[0011] Preferably, the diameter of the lower heat-conducting ring is the same as the bottom aperture of the heat-conducting cone.

[0012] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0013] 1. In this utility model, the heat dissipation cavity reserved inside the drill bit, the heat-conducting cone installed on its inner wall, and the heat-conducting straight cylinder sleeved on the connecting handle inside the heat dissipation cavity can respectively conduct the heat generated inside the drill bit during use to the heat-conducting cone and the heat-conducting straight cylinder, thereby cooperating with the outer heat dissipation fins at the outer end of the heat-conducting cone and the inner heat dissipation fins at the outer end of the heat-conducting straight cylinder to quickly dissipate heat outward, so as to improve the heat dissipation effect of the internal heat.

[0014] 2. In this utility model, during high-speed forming drilling, the high-speed rotating drill bit has multiple sets of curved external heat dissipation fins on its top. These fins can also contact the airflow evenly and drive the airflow inward as the drill bit rotates at high speed. This results in good heat dissipation effect on the upper part of the external and internal heat dissipation fins during the high-speed rotation of the drill bit, allowing the heat inside the drill bit to be quickly dissipated from the inner end, thereby improving its service life. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a side sectional view of the present invention;

[0017] Figure 3 This is a disassembly diagram of the heat-conducting cone and heat-conducting straight cylinder of this utility model;

[0018] Figure 4 This is another perspective of the disassembly diagram of the heat-conducting cone and heat-conducting straight cylinder of this utility model.

[0019] Figure label:

[0020] 100. Step drill body; 101. Drill bit; 102. Connecting shank; 103. Chip removal groove;

[0021] 200. Internal heat dissipation component; 201. Heat dissipation cavity; 202. Heat-conducting cone; 203. Upper heat-conducting ring; 204. External heat dissipation fins; 205. Heat-conducting straight cylinder; 206. Internal heat dissipation fins; 207. Lower heat-conducting ring; 208. Restriction ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing an integrated high-speed forming stepped drill.

[0024] Example 1:

[0025] Combination Figure 1-4 As shown, this utility model provides an integrated high-speed forming step drill, comprising: a step drill body 100 and an internal heat dissipation assembly 200; the step drill body 100 includes a lower drill bit 101, a connecting shank 102 fixedly connected to the middle of the drill bit 101, and a chip removal groove 103 opened on one side of the drill bit 101; the internal heat dissipation assembly 200 includes a heat dissipation cavity 201 reserved in the drill bit 101, a heat-conducting cone 202 movably installed in the heat dissipation cavity 201, an upper heat-conducting ring 203 fixedly connected to the upper part of the heat-conducting cone 202, multiple sets of external heat dissipation fins 204 arranged and fixedly installed on the upper end of the upper heat-conducting ring 203, and a connecting shank 102. 2. A heat-conducting straight cylinder 205 is movably installed at the outer end. Inner heat dissipation fins 206 are arranged and fixedly installed at the outer end of the heat-conducting straight cylinder 205. A lower heat-conducting ring 207 is also fixedly connected to the bottom of the heat-conducting straight cylinder 205. A limiting ring 208 is also fixedly connected to the top of the heat-conducting straight cylinder 205. The limiting ring 208 is welded and fixed to the connecting handle 102. The outer heat dissipation fins 204 are all curved structures. The inner heat dissipation fins 206 are strip structures. The heat-conducting cone 202 is attached to the inner wall of the heat dissipation cavity 201. The upper heat-conducting ring 203 is welded and fixed to the drill bit 101. The diameter of the lower heat-conducting ring 207 is the same as the bottom hole diameter of the heat-conducting cone 202.

[0026] Specifically, the step drill, also known as a step drill or pagoda drill, is mainly used for drilling thin steel plates within 3mm. One drill bit can replace multiple drill bits. High-speed step drills can achieve rapid drilling of materials under high-speed conditions. An integrated step drill refers to a drill bit 101 and a connecting shank 102 that are integrated into one structure. The step drill body 100 has a pre-reserved heat dissipation cavity 201 inside the drill bit 101, and a heat-conducting cone 202 is fitted to the inner wall of the cavity. The heat-conducting straight cylinder 205, which is outer sleeved on the inner connecting shank 102, can conduct the heat generated inside the drill bit 101 during use to the heat-conducting cone 202 and the heat-conducting straight cylinder 205 respectively. This, in conjunction with the outer heat dissipation fins 204 at the outer end of the heat-conducting cone 202 and the inner heat dissipation fins 206 at the outer end of the heat-conducting straight cylinder 205, allows for rapid outward heat dissipation, thereby improving the heat dissipation effect inside the drill bit 101. Simultaneously, during high-speed forming drilling, the high-speed rotating drill bit 101... The top of the heat-conducting cone 202 has multiple sets of curved external heat dissipation fins 204, which can also uniformly contact the airflow and drive the airflow inward as the drill bit 101 rotates at high speed. This allows the upper part of the external heat dissipation fins 204 and the internal heat dissipation fins 206 to have a good heat dissipation effect during the high-speed rotation of the drill bit 101, so as to quickly dissipate the heat inside the drill bit 101 from the inner end, thereby improving its service life. The upper heat-conducting ring 203 at the upper end of the heat-conducting cone 202 is mainly used for heat conduction and fixing between the drill bit 101. The lower heat-conducting ring 207 at the bottom of the heat-conducting straight cylinder 205 can press the bottom opening of the heat-conducting cone 202 through the contact area between the bottom and the drill bit 101, so that the heat-conducting cone 202 can fit tightly against the inner wall of the heat dissipation cavity 201, thereby achieving good heat conduction. The limiting ring 208 at the top of the heat-conducting straight cylinder 205 mainly limits the connection position of the connecting handle 102, so as to avoid blocking the external heat dissipation fins 204 after connection.

[0027] Working principle and usage process of this utility model:

[0028] During high-speed drilling with the step drill bit 101, the heat generated at its inner end is transferred within the heat dissipation cavity 201 to the heat-conducting cone 202 and heat-conducting straight cylinder 205. The heat is then dissipated outward through the outer heat dissipation fins 204 and inner heat dissipation fins 206 arranged on the heat-conducting cone 202 and heat-conducting straight cylinder 205. Simultaneously, the high-speed rotating drill bit 101 also drives the multiple sets of outer heat dissipation fins 204 at its inner end to rotate. As the outer heat dissipation fins 204 rotate, they fully contact the airflow for heat dissipation and, through their curved structure, transport the airflow to the inner end. This ensures that the upper part of the heat-conducting straight cylinder 205 and the inner heat dissipation fins 206 also fully contact the airflow, thereby quickly dissipating the heat inside the heat-conducting cone 202 and heat-conducting straight cylinder 205 and reducing the internal heat during the high-speed rotation of the drill bit 101.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A one-piece high-speed forming stepped drill, characterized in that, include: Step drill body (100), internal heat dissipation assembly (200); The step drill body (100) includes a lower drill bit (101), a connecting shank (102) fixedly connected in the middle of the drill bit (101), and a chip removal groove (103) opened on one side of the drill bit (101). The internal heat dissipation assembly (200) includes a heat dissipation cavity (201) reserved in the drill bit (101), a heat-conducting cone (202) movably installed in the heat dissipation cavity (201), an upper heat-conducting ring (203) fixedly connected to the upper part of the heat-conducting cone (202), multiple sets of external heat dissipation fins (204) arranged and fixedly installed at the upper end of the upper heat-conducting ring (203), a heat-conducting straight cylinder (205) movably installed at the outer end of the connecting handle (102), and internal heat dissipation fins (206) arranged and fixedly installed at the outer end of the heat-conducting straight cylinder (205).

2. The integrated high-speed forming stepped drill according to claim 1, characterized in that, The bottom of the heat-conducting cylinder (205) is also fixedly connected to a lower heat-conducting ring (207).

3. The integrated high-speed forming stepped drill according to claim 1, characterized in that, The top of the heat-conducting straight cylinder (205) is also fixedly connected to a limiting ring (208), and the limiting ring (208) is welded and fixed to the connecting handle (102).

4. The integrated high-speed forming stepped drill according to claim 1, characterized in that, The outer heat dissipation fins (204) are all curved structures, and the inner heat dissipation fins (206) are strip structures.

5. The integrated high-speed forming stepped drill according to claim 1, characterized in that, The heat-conducting cone (202) is attached to the inner wall of the heat dissipation cavity (201), and the upper heat-conducting ring (203) is welded to the drill bit (101).

6. The integrated high-speed forming stepped drill according to claim 2, characterized in that, The diameter of the lower heat-conducting ring (207) is the same as the bottom aperture of the heat-conducting cone (202).

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