High-speed metal ceramic reamer

Abstract

The utility model discloses a high-speed metal ceramic reamer, which relates to the technical field of metal processing tools and comprises a drill body, a conical cutter body and an equal-ratio scaling punching structure. The top end of the drill body is connected with a drilling machine through a connecting pin, and the bottom cutter body is provided with a spine end and cutting teeth for gradually reaming; three groups of punching structures which are reduced in an equal ratio in the axial direction are mounted on the peripheral side of the cutter body, and each group comprises a cylindrical punching head, bottom end teeth and peripheral side polishing teeth. The punching head is matched with the conical surface of the cutter body through the wedging groove, fixed-diameter punching is achieved through the teeth, and hole walls are synchronously polished through the grinding teeth. The three punching structures can be scaled and replaced at equal ratio, dynamic aperture adjustment is supported, and the problems that a traditional tool is low in efficiency and poor in precision are solved.

Description

Technical Field

[0001] This utility model relates to the field of metal processing tool technology, and more specifically, to a high-speed metal-ceramic hole expander. Background Technology

[0002] In the reaming operation at the steel tapping outlet in the metallurgical industry, traditional tools generally adopt a split design. That is, after gradually reaming the hole with a single conical drill bit, a separate grinding head is then used to polish the hole wall. Such tools rely on multiple processes. For example, a fixed-diameter drill bit made of high-speed steel needs to be replaced multiple times to adapt to different hole diameter requirements, and the roughness of the hole wall after reaming can easily lead to an increase in the resistance to molten steel flow.

[0003] The existing technology has the following main problems: the separation of hole enlargement and grinding functions leads to low efficiency; the lack of dynamic hole diameter adjustment capability makes it difficult to adapt to the modification of steel outlets of various specifications; how to realize the integrated operation of hole enlargement and grinding and support dynamic hole diameter adjustment has become a technical problem that urgently needs to be solved. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a high-speed metal-ceramic hole expander to overcome the above-mentioned technical problems existing in the existing related technologies.

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

[0006] A high-speed metal-ceramic hole expander includes a drill body, a connecting pin fixedly provided at the top end of the drill body, a cutter body fixedly provided at the bottom end of the drill body, a spiked end provided at the bottom end of the cutter body, cutting teeth provided on the periphery of the cutter body, a connecting hole provided on the cutter body, and a drilling structure connected to the cutter body through the connecting hole.

[0007] Furthermore, the drilling structure includes a drilling head, teeth, grinding teeth, a mating groove, a docking seat, and a connecting bolt. The bottom end of the drilling head has teeth, the periphery of the drilling head has grinding teeth, the center of the drilling head has a mating groove, and the top end of the drilling head is fixedly connected to a docking seat, with a connecting bolt connected inside the docking seat.

[0008] Furthermore, the groove fits into the cutter body, and the connecting bolt includes a bolt and a nut.

[0009] Furthermore, the included angle between the two pairs of connecting bolts in the same group of the perforated structure is ninety degrees, and the connecting holes fit into the bolts.

[0010] Furthermore, the blade is conical, and the three sets of drilling structures on the blade are proportionally reduced from the drill body to the spike tip.

[0011] Furthermore, the punch head is fixedly connected to the cutter body by a connecting bolt passing through the connecting hole.

[0012] The beneficial effects of this utility model are as follows: This utility model achieves integrated operation of hole enlargement, fixed diameter hole opening and hole wall grinding through the coordinated design of conical cutter body and three sets of proportionally scaled hole-making structures. The modular hole-making structure supports proportional scaling, solves the adaptation problem of multi-specification steel outlet modification, and reduces maintenance costs, providing the metallurgical industry with an efficient, high-precision and long-life hole enlargement solution. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of a high-speed metal-ceramic expander according to an embodiment of the present utility model;

[0015] Figure 2 This is a front view of the drill body of a high-speed metal-ceramic reamer according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the drilling structure of a high-speed metal-ceramic hole expander according to an embodiment of the present utility model;

[0017] Figure 4 This is a bottom view of the drill body of a high-speed metal-ceramic reamer according to an embodiment of the present utility model.

[0018] In the picture:

[0019] 1. Drill body; 2. Connecting pin; 3. Cutting tool body; 4. Spike tip; 5. Cutting teeth; 6. Drilling structure; 601. Drilling head; 602. Teeth; 603. Grinding teeth; 604. Mating groove; 605. Seat; 606. Connecting bolt; 7. Connecting hole. Detailed Implementation

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

[0021] According to an embodiment of the present invention, a high-speed metal-ceramic expander is provided.

[0022] Example 1;

[0023] like Figure 1-4 As shown, the high-speed metal-ceramic reamer according to an embodiment of the present invention includes a drill body 1, a connecting pin 2 fixedly provided at the top end of the drill body 1, a cutter body 3 fixedly provided at the bottom end of the drill body 1, a spike end 4 provided at the bottom end of the cutter body 3, cutting teeth 5 provided on the periphery of the cutter body 3, a connecting hole 7 opened on the cutter body 3, and a drilling structure 6 connected to the cutter body 3 through the connecting hole 7. The connecting pin 2 at the top end of the drill body 1 is used to connect with the drilling machine. The cutter body 3 and the cutting teeth 5 are used to expand the hole of the steel outlet. The spike end 4 is generally directly opposite the center of the steel outlet. When the drilling machine pushes the cutter body 3, the cutter body 3 will gradually expand the hole of the steel outlet through the conical design.

[0024] The drilling structure 6 includes a drilling head 601, teeth 602, grinding teeth 603, a mating groove 604, a mating seat 605, and a connecting bolt 606. The bottom end of the drilling head 601 has teeth 602, the periphery of the drilling head 601 has grinding teeth 603, the center of the drilling head 601 has a mating groove 604, and the top end of the drilling head 601 is fixedly connected to the mating seat 605. The connecting bolt 606 is connected inside the mating seat 605. The main body of the drilling head 601 of the drilling structure 6 is cylindrical, with a hollowed-out bottom end. During the advance of the 602 toothed drill, a fixed-circle opening can be made directly at the steel outlet. It should be noted that the drilling structure 6 can be made proportionally smaller or larger according to the actual drilling requirements, so that it can directly drill a circular hole of a fixed diameter. The cooperation between the drilling structure 6, the drill body 1, and the cutter body 3 can open a circular hole of a fixed diameter while gradually expanding the hole. At the same time, the grinding teeth 603 can grind the inner circumference of the expanded steel outlet, making the inner circumference of the steel outlet smoother.

[0025] The fitting groove 604 fits into the cutter body 3. The connecting bolt 606 includes a bolt and a nut. The included angle between the two pairs of connecting bolts 606 in the same group of the drilling structure 6 is 90 degrees. The connecting hole 7 fits into the bolt. The cutter body 3 is tapered. The three groups of drilling structures 6 on the cutter body 3 decrease proportionally from the drill body 1 to the spike end 4. The drilling head 601 is fixedly connected to the cutter body 3 through the connecting bolt 606 in the connecting hole 7. The smallest drilling structure 6 near the spike end 4 cuts into the steel outlet first. Utilizing the centering effect of the spike end 4, the small-diameter hole provides precise guidance for subsequent hole enlargement, avoiding large-diameter cutters. To mitigate the risk of eccentricity caused by direct impact, the subsequent two enlarged structures sequentially enlarge the hole diameter, reducing the amount of material cut per pass, lowering the drilling rig's propulsion resistance, and extending tool life. During the small-diameter hole-opening stage, debris from the central area is prioritized for removal to prevent debris blockage during large-diameter cutting. Staged cutting reduces heat accumulation during a single machining operation. Combined with the cermet material of the drilling head 601, it can effectively suppress tool deformation caused by high temperatures. By replacing the drilling structures 6 with different proportional coefficients, if the steel outlet is partially damaged, the smallest drilling structure 6 can be used to quickly open the hole, and then the size can be gradually enlarged to the target size, avoiding the need to replace the entire liner.

[0026] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0027] In summary, with the help of the above-mentioned technical solution of this utility model, the top connecting pin 2 of the drill body 1 is used to connect with the drilling machine, the cutter body 3 and the cutting teeth 5 are used to enlarge the steel outlet, the spike end 4 is generally directly facing the center of the steel outlet, when the drilling machine pushes the cutter body 3, the cutter body 3 will gradually enlarge the steel outlet through the conical design, the main body of the drilling head 601 of the drilling structure 6 is cylindrical, and its bottom end is hollowed out, the teeth 602 can directly make a fixed circle opening at the steel outlet during the drilling process. It should be noted that the drilling structure 6 can be made proportionally smaller or larger according to the actual drilling requirements, so that it can directly drill a circle hole of fixed diameter. The cooperation between the drilling structure 6, the drill body 1 and the cutter body 3 can open a circle hole of fixed diameter while gradually enlarging the hole, and the grinding teeth 603 can grind the enlarged steel outlet. The inner circumference of the steel outlet is ground to make it smoother. The smallest drilling structure 6, near the spike end 4, cuts into the steel outlet first. Utilizing the centering effect of the spike end 4, the small-diameter opening provides precise guidance for subsequent hole enlargement, avoiding the risk of eccentricity caused by direct impact from large-diameter tools. The subsequent two sets of enlargement structures sequentially enlarge the hole diameter, reducing the amount of material cut per pass, lowering the drilling machine's propulsion resistance, and extending tool life. During the small-diameter opening stage, debris in the central area is prioritized for removal to prevent debris blockage during large-diameter cutting. Staged cutting reduces heat accumulation during a single machining operation. Combined with the metal-ceramic material of the drilling head 601, it can effectively suppress tool deformation caused by high temperatures. By replacing the drilling structures 6 with different proportional coefficients, if the steel outlet is partially damaged, it can be quickly opened through the smallest drilling structure 6, and then gradually enlarged to the target size, avoiding the need to replace the entire liner.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-speed metal-ceramic expander, characterized in that, The device includes a drill body (1), a connecting pin (2) fixedly provided at the top end of the drill body (1), a cutter body (3) fixedly provided at the bottom end of the drill body (1), a spike end (4) provided at the bottom end of the cutter body (3), cutting teeth (5) provided on the periphery of the cutter body (3), a connecting hole (7) provided on the cutter body (3), and a drilling structure (6) connected to the cutter body (3) through the connecting hole (7).

2. The high-speed metal-ceramic expander according to claim 1, characterized in that, The drilling structure (6) includes a drilling head (601), teeth (602), grinding teeth (603), a mating groove (604), a docking seat (605), and a connecting bolt (606). The bottom end of the drilling head (601) is provided with teeth (602).

3. A high-speed metal-ceramic expander according to claim 2, characterized in that, The punch head (601) has grinding teeth (603) on its periphery, and a mating groove (604) is provided in the center of the punch head (601).

4. A high-speed metal-ceramic expander according to claim 3, characterized in that, The top end of the punch head (601) is fixedly connected to a docking seat (605), and a connecting bolt (606) is connected inside the docking seat (605).

5. A high-speed metal-ceramic expander according to claim 4, characterized in that, The fitting groove (604) fits into the blade body (3), and the connecting bolt (606) includes a bolt and a nut.

6. A high-speed metal-ceramic expander according to claim 5, characterized in that, The included angle between the two pairs of connecting bolts (606) in the same group of the perforated structure (6) is 90 degrees, and the connecting hole (7) fits into the bolt.

7. A high-speed metal-ceramic expander according to claim 6, characterized in that, The blade (3) is conical, and the three sets of drilling structures (6) on the blade (3) are proportionally reduced from the drill body (1) to the spike end (4).

8. A high-speed metal-ceramic expander according to claim 7, characterized in that, The punch head (601) is fixedly connected to the blade body (3) by passing through the connecting hole (7) via the connecting bolt (606).

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