Tooth-shaped embedded tool bit and blade combined drill

Abstract

The utility model relates to the technical field of drill bits, in particular to a tooth-shaped embedded type tool bit and blade combined drill, which is characterized in that when in use, a tool bit and tool apron component is mounted at the bottom end of a drill rod main body, and a worker enables the drill rod main body to be connected with a rotating shaft of a machine tool through a clamping part, so that the drill rod main body is mounted and the machine tool is started; therefore, the rotating shaft drives the tool apron and tool bit assembly to quickly rotate through the drill rod main body, and the convenience is improved; comprising a drill rod main body, a clamping part and a first clamping groove, the drill rod main body is cylindrical, two chip removal grooves are formed in the outer wall of the drill rod main body, the chip removal grooves are symmetrical about the axis of the drill rod main body and are formed in the outer wall of the drill rod main body in a spiral extending mode, and the clamping part is arranged at the top end of the drill rod main body; the first clamping groove is composed of a plurality of strip-shaped concave teeth distributed in a tooth shape, the clamping part comprises a straight tangent plane on the annular wall and an annular groove, and the tool apron and tool bit assembly is detachably installed at the bottom of the drill rod body.

Description

Technical Field

[0001] This utility model relates to the technical field of drill bits, and in particular to a toothed embedded cutter head and insert combination drill. Background Technology

[0002] In existing technologies, traditional drill bits are mostly of a one-piece structure, requiring replacement of the entire bit after wear, which is costly. While some replaceable-insert drill bits allow for insert replacement, they suffer from the following problems:

[0003] 1. The blade fixing method is complicated and inconvenient to disassemble;

[0004] 2. Insufficient rigidity in the connection between the cutting tool and the substrate can easily lead to vibration and decreased machining accuracy;

[0005] 3. The blade tooth design is simple and difficult to adapt to different materials (such as high-hardness metals or laminated composite materials).

[0006] Therefore, there is an urgent need for a combined drill structure that combines high cutting performance, easy replacement, and high stability. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a toothed embedded cutter head and blade combination drill.

[0008] This utility model discloses a toothed embedded cutter head and insert combination drill, comprising a drill rod body, a clamping part, and a first slot. The drill rod body is cylindrical, and its outer wall has two chip removal grooves. These grooves are symmetrical about the axis of the drill rod body and extend spirally. The top of the drill rod body has a clamping part, and the bottom of the drill rod body has a first slot, which is composed of several toothed strip-shaped concave teeth. The clamping part includes a straight cut surface and an annular groove on its ring wall, and includes a cutter head assembly. The cutter head assembly is detachably installed at the bottom of the drill rod body. In use, the cutter head and cutter head assembly is installed at the bottom of the drill rod body. The operator connects the drill rod body to the machine tool's rotating shaft through the clamping part, thus completing the installation of the drill rod body. The machine tool is then started, causing the rotating shaft to drive the cutter head assembly to rotate rapidly through the drill rod body. Waste chips are discharged through the two chip removal grooves on the drill rod body, improving convenience.

[0009] Preferably, the tool holder and tool head assembly includes a tool holder body, strip-shaped protrusions, a second retaining groove, a side tool mounting base, a side cutting tool, a side tool fixing screw, a main cutting tool, threaded holes, countersunk holes, and a tool holder locking screw. The top of the tool holder body has several strip-shaped protrusions arranged in a toothed pattern, which mesh with the first retaining groove. The top of the tool holder body has two sets of threaded holes, and the tool holder body has two sets of countersunk holes. Each set of countersunk holes contains a set of tool holder locking screws, which are threaded into the set of threaded holes. A second retaining groove is located at the center of the bottom of the tool holder body. The tool holder body has a set of side cutter mounting seats on both sides. The side cutting cutter is fixedly mounted on the side cutter mounting seat by side cutter fixing screws, and the main cutting cutter is fixedly mounted on the second slot. During assembly, the side cutting cutter is fixedly mounted in the side cutter mounting seat with the help of the side cutter fixing screws, and the main cutting cutter is mounted in the second slot with the help of the positive and negative thread bolts. Then, the operating strip-shaped convex teeth engage with the first slot to complete the positioning of the tool holder body. After that, the tool holder locking screw passes through the countersunk hole and is threaded into the threaded hole to complete the fixed installation of the tool holder body.

[0010] Preferably, the sidewall of the tool holder body is symmetrically provided with two sets of tool holder chip removal grooves. The top end of the tool holder chip removal groove is connected to the bottom end of the chip removal groove. The tool holder chip removal groove is formed by splicing two arc-shaped grooves with different radii, and the outer arc-shaped groove is larger than the inner arc-shaped groove. During operation, the chips are removed by cooperating with the tool holder chip removal groove and the chip removal groove.

[0011] Preferably, the main cutting tool is blade-shaped and symmetrical along its centerline, with a mounting hole at its bottom and an S-shaped main cutting edge at the center of its front end. The center of the main cutting edge is at the front end, and a V-shaped tapering drill surface is formed from the center to the two side edges. The main cutting tool is installed by assembling the positive and negative thread bolts with the mounting hole, and the main cutting tool cuts the workpiece through the main cutting edge.

[0012] Preferably, the main cutting tool has a ridge on one side and a chip removal groove and a chip guide groove on the other side. The depth of the chip removal groove is less than the depth of the chip guide groove. The chip removal groove is a groove with a smooth transition connecting to one side wall of the main cutting edge on its inner side. One side edge of the chip guide groove is connected to the chip guide groove. The chip guide groove is an arc-shaped groove on the side wall of the cutting tool. Its upper end is connected to the main cutting edge, its right end is connected to the chip removal groove, and its bottom end is connected to the chip removal groove of the tool holder. The ridge enhances the strength of the cutting edge on the main cutting tool. The chip removal groove and the chip guide groove guide the chips to the chip removal groove of the tool holder, and then guide them to the chip removal groove of the drill rod body through the chip removal groove of the tool holder.

[0013] Preferably, the side cutting tool is a polygonal alloy blade, with one corner extending beyond the outer wall of the tool holder as a chip section.

[0014] Preferably, the included angle between the two sides of the main cutting edge is 146°~150°, with the middle of the main cutting edge on the main cutting tool as the endpoint.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the cutter head and cutter holder assembly is installed at the bottom of the drill rod body. The operator connects the drill rod body to the machine tool's rotating shaft through the clamping part, thereby completing the installation of the drill rod body. The machine tool is then started, causing the rotating shaft to drive the cutter head and cutter holder assembly to rotate rapidly through the drill rod body. Waste chips are discharged through the two chip removal grooves on the drill rod body, improving convenience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the present invention;

[0018] Figure 3 This is an enlarged structural diagram of the drill pipe body and the No. 1 slot, etc.

[0019] Figure 4 This is a first exploded structural diagram of the tool holder body and main cutting tool, etc.

[0020] Figure 5 This is a second exploded structural diagram of the tool holder body and main cutting tool.

[0021] The following are labels in the attached diagram: 1. Drill rod body; 2. Clamping part; 3. No. 1 slot; 4. Tool holder body; 5. Strip tooth; 6. No. 2 slot; 7. Side tool mounting base; 8. Side cutting tool; 9. Side tool fixing screw; 10. Main cutting tool; 11. Threaded hole; 12. Countersunk hole; 13. Tool holder locking screw; 14. Positive and negative thread bolt. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0023] like Figures 1 to 5As shown, the toothed embedded cutter head and blade combination drill of this utility model includes a drill rod body 1, a clamping part 2, and a first slot 3. The drill rod body 1 is cylindrical, and the outer wall of the drill rod body 1 is provided with two chip removal grooves. The chip removal grooves are symmetrical about the axis of the drill rod body 1 and spirally extended on the outer wall of the drill rod body 1. The top end of the drill rod body 1 is provided with the clamping part 2, and the bottom end of the drill rod body 1 is provided with the first slot 3. The first slot 3 is composed of several strip-shaped concave teeth distributed in a tooth shape. The clamping part 2 includes a flat cut surface and an annular groove on the annular wall, and includes a cutter head assembly. The cutter head assembly is detachably installed at the bottom of the drill rod body 1.

[0024] like Figures 2 to 5 As shown, the tool holder and tool head assembly includes a tool holder body 4, strip-shaped protrusions 5, a second slot 6, a side tool mounting base 7, a side cutting tool 8, a side tool fixing screw 9, a main cutting tool 10, threaded holes 11, countersunk holes 12, and a tool holder locking screw 13. The top of the tool holder body 4 is provided with several strip-shaped protrusions 5 arranged in a tooth shape, and the strip-shaped protrusions 5 engage with the first slot 3. The top of the tool holder body 4 is provided with two sets of threaded holes 11, and the tool holder body 4 is provided with two sets of countersunk holes 12. Each set of countersunk holes 12 is provided with a set of tool holder locking screws 13, and the tool holder locking screws 13 are threadedly connected to a set of threaded holes 11. The bottom center of the tool holder body 4 is provided with a second slot 6, and a set of side tool mounting bases 7 are provided on both sides of the tool holder body 4. The side cutting tool 8 is fixedly mounted on the side tool mounting base 7 by the side tool fixing screw 9, and the main cutting tool 10 is fixedly mounted on the second slot 6.

[0025] In this embodiment, during assembly, the operating side cutting tool 8 is fixedly installed in the side tool mounting seat 7 with the cooperation of the side tool fixing screw 9, and the operating main cutting tool 10 is installed in the second slot 6 with the cooperation of the positive and negative thread bolts 14. Then, the operating strip-shaped convex tooth 5 engages with the first slot 3 to complete the positioning of the tool holder body 4. Then, the tool holder locking screw 13 passes through the countersunk hole 12 and is threadedly connected to the threaded hole 11 to complete the fixed installation of the tool holder body 4. The drill rod body 1 is connected to the machine tool's rotating shaft through the clamping part 2 to complete the installation of the drill rod body 1. The machine tool is started, so that the rotating shaft drives the tool holder head assembly to rotate rapidly through the drill rod body 1. The waste chips are discharged through the two chip removal grooves on the drill rod body 1. Example 2

[0026] Based on Example 1, such as Figures 1 to 5 As shown, the toothed embedded cutter head and blade combination drill of this utility model has two sets of chip removal grooves symmetrically arranged on the four side walls of the cutter body. The top end of the chip removal groove is connected to the bottom end of the chip removal groove.

[0027] like Figure 4 and Figure 5As shown, the main cutting tool 10 is plate-shaped and symmetrical along its centerline. It has a mounting hole at its bottom and an S-shaped main cutting edge at the center of its front end. The center of the main cutting edge is at the front end, and a V-shaped tapering drill surface is formed from the center to the two side edges.

[0028] like Figures 3 to 5 As shown, the main cutting tool 10 has a ridge on one side and a chip removal groove and a chip extraction groove on the other side. The depth of the chip removal groove is less than the depth of the chip extraction groove. The chip removal groove is a groove with a smooth transition connecting to one side wall of the main cutting edge on its inner side. One side edge of the groove connects to the chip extraction groove. The chip extraction groove is an arc-shaped groove on the side wall of the tool. Its upper end is connected to the main cutting edge, its right end is connected to the chip removal groove, and its bottom end is connected to the tool holder chip removal groove.

[0029] The side cutting tool 8 is a polygonal alloy blade, with one corner extending beyond the outer wall of the tool holder as a chip section;

[0030] With the middle of the main cutting edge on the main cutting tool 10 as the endpoint, the included angle between the two sides of the main cutting edge is 146°~150°.

[0031] The chip removal groove of the tool holder is composed of two arc-shaped grooves with different radii, with the outer arc-shaped groove being larger than the inner arc-shaped groove.

[0032] In this embodiment, the chips are removed by the chip removal groove and chip removal groove of the tool holder. The spine enhances the strength of the cutting edge on the main cutting tool 10. The chip removal groove and chip guiding groove guide the chips to the chip removal groove of the tool holder, and then guide them to the chip removal groove of the drill rod body 1.

[0033] The toothed embedded cutter head and blade combination drill of this utility model has a liquid inlet on the drill rod body 1. The drill rod body 1 of the toothed embedded cutter head and blade combination drill of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from technical personnel in this field.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A toothed embedded cutter head and insert combination drill, comprising a drill rod body (1), a clamping part (2), and a first slot (3), wherein the drill rod body (1) is cylindrical, and the outer wall of the drill rod body (1) is provided with two chip removal grooves, the chip removal grooves being symmetrical about the axis of the drill rod body (1) and spirally extending on the outer wall of the drill rod body (1), the top end of the drill rod body (1) is provided with the clamping part (2), and the bottom end of the drill rod body (1) is provided with the first slot (3), the first slot (3) being composed of several strip-shaped concave teeth distributed in a toothed shape, and the clamping part (2) including a flat cut surface and an annular groove on the annular wall, characterized in that, It includes a tool holder and tool head assembly, which is detachably mounted on the bottom of the drill pipe body (1).

2. The combination drill of the insert and the indexable head with a tooth profile according to claim 1, characterized in that, The tool holder and tool head assembly includes a tool holder body (4), strip-shaped protrusions (5), a second slot (6), a side tool mounting base (7), a side cutting tool (8), a side tool fixing screw (9), a main cutting tool (10), a threaded hole (11), a countersunk hole (12), and a tool holder locking screw (13). The top of the tool holder body (4) is provided with several strip-shaped protrusions (5) arranged in a tooth shape. The strip-shaped protrusions (5) mesh with the first slot (3). The top of the tool holder body (4) is provided with two sets of threaded holes (11). 4) Two sets of countersunk holes (12) are provided on the upper part. Each set of countersunk holes (12) is provided with a set of tool holder locking screws (13). The tool holder locking screws (13) are threadedly connected to a set of threaded holes (11). The bottom center of the tool holder body (4) is provided with a second slot (6). A set of side tool mounting seats (7) are provided on both sides of the tool holder body (4). The side cutting tool (8) is fixedly mounted on the side tool mounting seat (7) by the side tool fixing screw (9). The main cutting tool (10) is fixedly mounted on the second slot (6).

3. The combination drill of the insert and the indexable head with teeth as claimed in claim 2, characterized in that, The main body of the tool holder (4) has two sets of tool holder chip removal grooves symmetrically arranged on the side wall. The top end of the tool holder chip removal groove is connected to the bottom end of the chip removal groove. The tool holder chip removal groove is formed by splicing two arc-shaped grooves with different radii. The outer arc-shaped groove is larger than the inner arc-shaped groove.

4. The combination drill of the insert and the indexable head according to claim 3, wherein, The main cutting tool (10) is plate-shaped and symmetrical along its centerline. It has a mounting hole at its bottom and an S-shaped cutting edge at the center of its front end. The center of the cutting edge is at the front end, and a V-shaped tapering drill surface is formed from the center to the two side edges.

5. The combination drill of the insert and the indexable head according to claim 4, wherein, The main cutting tool (10) has a ridge on one side and a chip removal groove and a chip extraction groove on the other side. The depth of the chip removal groove is less than the depth of the chip extraction groove. The chip removal groove is a groove with a smooth transition connecting to one side wall of the main cutting edge on its inner side. One side edge of the groove connects to the chip extraction groove. The chip extraction groove is an arc-shaped groove on the side wall of the blade. Its upper end is connected to the main cutting edge, its right end is connected to the chip removal groove, and its bottom end is connected to the chip removal groove of the tool holder.

6. The combination drill of the insert and the indexable head according to claim 2, wherein, The side cutting tool (8) is a polygonal alloy blade with one corner extending beyond the outer wall of the tool holder as a chip section.

7. The combination drill of the insert and the indexable head according to claim 4, wherein, With the middle of the main cutting edge on the main cutting tool (10) as the endpoint, the included angle between the two sides of the main cutting edge is 146°~150°.

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