Improved special cutter for upper chip removal in large-hole and deep-hole machining

Abstract

The utility model discloses a large hole deep hole processing upper chip removal improved special cutter, which comprises a cutter handle and a cutter head which are detachably connected, the top of the cutter head is provided with a connecting column, the connecting column is integrally provided with a limiting column, the bottom of the cutter handle is provided with a first limiting groove, the limiting column is inserted into the first limiting groove, and the cutter head is provided with a second limiting groove. A limiting strip is integrally formed on the outer wall of the limiting column, a second limiting groove is formed in the inner wall of the first limiting groove, and the limiting strip is clamped into the second limiting groove. Due to the detachable design of the cutter handle and the cutter head, after the cutter head of the hole machining cutter is damaged, the cutter handle and the cutter head can be separated by screwing the bolt, only the cutter head needs to be replaced independently, the cutter handle does not need to be replaced consistently, the price of a single cutter head is lower compared with the price of a complete cutter, and then the use cost of the cutter is relatively reduced; and the manufacturing cost of a processing enterprise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hole processing tools, in particular to an improved chip removal special tool for processing large holes and deep holes. Background Art

[0002] Large hole and deep hole machining are common machining processes in the field of metalworking, which are used to machine holes with large diameters or deep depths. The tool used for hole machining usually consists of a tool holder and a set of blades. The tool holder is fixed to the milling machine or milling machine spindle, and the blade is located at the end of the tool holder. When the tool holder rotates, the blade is responsible for cutting the workpiece and carrying away the chips. The chips generated during the cutting process will automatically rise when leaving the workpiece and be carried away by the blade. This design can reduce the interference of chips on the cutting process, and it is also more convenient for cooling and lubricating the cutting fluid.

[0003] After searching, the patent with application number CN201721773029.9 discloses a special reamer for mating hole processing, which belongs to the field of mold processing technology. The utility model includes a mounting head and a reamer detachably connected to the mounting head, the reamer includes a working part and a connecting part, the diameter of the working part is larger than the diameter of the connecting part, the connecting part is detachably connected to the mounting head, the working part extends out of the mounting head, the working part includes a first cutting part and a second cutting part which are integrally arranged, the diameter of the first cutting part is smaller than the diameter of the second cutting part, and the first cutting part and the second cutting part are provided with a transition step, the outer wall of the working part is provided with a plurality of spiral blades along the circumference, the rotation direction of the spiral blades is the same as the rotation direction of the reamer when working, the spiral blades are distributed in the entire length direction of the working part, and the spiral blades of the first cutting part and the second cutting part are a whole, and a chip groove is provided between two adjacent spiral blades. The utility model has the advantages of improving efficiency and being easy to use.

[0004] Most of the current special tools for hole processing are tools with a shank and a cutter head integrally formed. After long-term use, the cutter head is severely worn and cannot even be repaired through secondary processing. The entire tool can only be replaced, which increases the manufacturing cost of the processing company. Therefore, we need to propose a special tool with improved chip removal for large hole and deep hole processing. Utility Model Content

[0005] The purpose of the utility model is to provide a special tool with improved chip removal for large-hole and deep-hole processing. Through the detachable design of the tool handle and the tool head, after the tool head of the hole processing tool is damaged, the tool handle and the tool head can be separated by tightening the bolt. Only the tool head needs to be replaced separately, and there is no need to replace the tool handle together. Compared with the price of a complete tool, the price of a single tool head is lower, thereby relatively reducing the cost of using the tool, that is, reducing the manufacturing cost of the processing enterprise, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved chip removal special tool for large hole deep hole processing, comprising a detachably connected tool handle and a tool head, a connecting column is installed on the top of the tool head, a limiting column is integrally formed on the connecting column, a first limiting groove is opened at the bottom of the tool handle, the limiting column is inserted into the inside of the first limiting groove, a limiting strip is integrally formed on the outer wall of the limiting column, a second limiting groove is opened on the inner wall of the first limiting groove, and the limiting strip is clamped in the inside of the second limiting groove;

[0007] A groove is provided on the side wall of the limiting strip, a clamping assembly is movably installed inside the groove, a clamping slot is provided on the inner wall of the second limiting slot, and the clamping assembly is clamped inside the clamping slot.

[0008] Preferably, the locking assembly comprises a sphere movably mounted inside the groove, a spring is connected between the sphere and the inner wall of the groove, and an end of the sphere away from the spring is locked inside the locking slot.

[0009] Preferably, a positioning column is connected to the bottom of the knife handle, a positioning groove is formed on the top of the connecting column, and the positioning column is inserted into the positioning groove.

[0010] Preferably, the limiting column is installed inside the first limiting groove by means of bolts, a through hole is provided on the side wall of the first limiting groove, a threaded blind hole aligned with the through hole is provided on the side wall of the limiting column, and one end of the bolt passes through the through hole and is threadedly connected to the inside of the threaded blind hole.

[0011] Preferably, a chip removal groove is provided on the outer wall of the cutter head, and a cutting edge is provided at the bottom end of the cutter head.

[0012] Preferably, the limiting strips are semi-cylindrical limiting strips, and four groups of the limiting strips are provided. The four groups of limiting strips are equidistantly distributed in a ring shape on the outer wall of the limiting column.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts the detachable design of the tool handle and the tool head. After the tool head of the hole processing tool is damaged, the tool handle and the tool head can be separated by tightening the bolt. Only the tool head needs to be replaced separately, and there is no need to replace the tool handle together. Compared with the price of a complete tool, the price of a single tool head is lower, thereby relatively reducing the cost of using the tool, that is, reducing the manufacturing cost of the processing enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of part A in the middle;

[0018] Figure 4 For this utility model Figure 2 Enlarged view of part B in the middle.

[0019] In the figure: 1. tool handle; 2. tool head; 21. chip groove; 3. blade; 4. connecting column; 5. bolt; 6. positioning column; 7. through hole; 8. limiting column; 9. limiting strip; 10. positioning groove; 11. groove; 12. spring; 13. sphere; 14. first limiting groove; 15. second limiting groove; 16. slot; 17. threaded blind hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: an improved chip removal special tool for large hole deep hole processing, comprising a detachably connected tool handle 1 and a tool head 2, a connecting column 4 is installed on the top of the tool head 2, a limiting column 8 is integrally formed on the connecting column 4, a first limiting groove 14 is provided at the bottom of the tool handle 1, the outer diameter of the limiting column 8 is equal to the inner diameter of the first limiting groove 14, the height of the limiting column 8 is equal to the depth of the first limiting groove 14, the limiting column 8 is inserted into the inside of the first limiting groove 14, a limiting strip 9 is integrally formed on the outer wall of the limiting column 8, a second limiting groove 15 is provided on the inner wall of the first limiting groove 14, and the limiting strip 9 is clamped in the inside of the second limiting groove 15, so as to facilitate the disassembly and assembly of the tool head 2 and the tool handle 1;

[0022] A groove 11 is provided on the side wall of the limiting strip 9, and a positioning assembly is movably installed inside the groove 11. A clamping groove 16 is provided on the inner wall of the second limiting groove 15, and the clamping assembly is clamped in the inside of the clamping groove 16 to achieve preliminary positioning of the handle 1 and the blade head 2.

[0023] The locking assembly includes a sphere 13 movably mounted inside the groove 11 , a spring 12 is connected between the sphere 13 and the inner wall of the groove 11 , an end of the sphere 13 away from the spring 12 is locked inside the slot 16 , and the ball diameter of the sphere 13 is equal to the inner diameter of the groove 11 .

[0024] The bottom of the knife handle 1 is connected with a positioning column 6 , and the positioning column 6 is arranged in a ring shape with at least four groups at equal angles. The top of the connecting column 4 is provided with a positioning groove 10 , which is aligned with the positioning column 6 , and the positioning column 6 is inserted into the inside of the positioning groove 10 .

[0025] The limiting column 8 is installed inside the first limiting groove 14 by means of a bolt 5. A through hole 7 is provided on the side wall of the first limiting groove 14. A threaded blind hole 17 aligned with the through hole 7 is provided on the side wall of the limiting column 8. One end of the bolt 5 passes through the through hole 7 and is threadedly connected to the inside of the threaded blind hole 17.

[0026] A chip removal groove 21 is provided on the outer wall of the cutter head 2 to facilitate the discharge of waste chips generated during the drilling process. A cutting edge 3 is provided at the bottom end of the cutter head 2 .

[0027] The limiting strips 9 are configured as semi-cylindrical limiting strips, and four groups of limiting strips 9 are provided. The four groups of limiting strips 9 are distributed in an annular shape and at equal intervals on the outer wall of the limiting column 8 .

[0028] When in use, the tool is mounted on a tool holder for drilling, the tool head 2 is aligned with the position to be processed, and the tool is driven to rotate and move downward to perform large-hole and deep-hole processing. During the hole processing, the waste chips generated will be discharged upward along the chip discharge groove 21 out of the hole;

[0029] When the cutter head 2 is damaged, it can be replaced separately. Use a screwdriver (or other disassembly tool) to unscrew the bolt 5, pull the cutter head 2 downward, and drive the limit column 8 to disengage from the first limit groove 14. During this process, the ball 13 moves downward to disengage from the card slot 16, and the ball 13 is squeezed into the interior of the groove 11. At the same time, the limit strip 9 slides downward along the second limit groove 15, and the positioning column 6 disengages from the positioning groove 10, completing the disassembly of the cutter head 2. The operation is simple and saves time for disassembly. Then the newly prepared cutter head 2 can be reinstalled on the lower end of the handle 1. The specific installation method is similar to the disassembly process and will not be repeated here.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool with improved chip removal for large hole and deep hole machining, characterized by: The invention comprises a detachably connected knife handle (1) and a knife head (2), wherein a connecting column (4) is installed on the top of the knife head (2), a limiting column (8) is integrally formed on the connecting column (4), a first limiting groove (14) is provided on the bottom of the knife handle (1), the limiting column (8) is inserted into the inside of the first limiting groove (14), a limiting strip (9) is integrally formed on the outer wall of the limiting column (8), a second limiting groove (15) is provided on the inner wall of the first limiting groove (14), and the limiting strip (9) is clamped into the inside of the second limiting groove (15); A groove (11) is provided on the side wall of the limiting strip (9), a locking assembly is movably installed inside the groove (11), a locking groove (16) is provided on the inner wall of the second limiting groove (15), and the locking assembly is locked inside the locking groove (16).

2. The special tool with improved chip removal for large hole and deep hole machining according to claim 1, characterized in that: The locking assembly comprises a sphere (13) movably mounted inside the groove (11); a spring (12) is connected between the sphere (13) and the inner wall of the groove (11); and an end of the sphere (13) away from the spring (12) is locked inside the locking slot (16).

3. The special tool with improved chip removal for large hole and deep hole machining according to claim 2 is characterized in that: The bottom of the knife handle (1) is connected to a positioning column (6), the top of the connecting column (4) is provided with a positioning groove (10), and the positioning column (6) is inserted into the interior of the positioning groove (10).

4. The special tool with improved chip removal for large hole and deep hole machining according to claim 1, characterized in that: The limiting column (8) is installed inside the first limiting groove (14) by means of a bolt (5); a through hole (7) is provided on the side wall of the first limiting groove (14); a threaded blind hole (17) aligned with the through hole (7) is provided on the side wall of the limiting column (8); one end of the bolt (5) passes through the through hole (7) and is threadedly connected inside the threaded blind hole (17).

5. The special tool with improved chip removal for large hole and deep hole machining according to claim 1 is characterized in that: A chip removal groove (21) is provided on the outer wall of the cutter head (2), and a cutting edge (3) is provided at the bottom end of the cutter head (2).

6. The special tool with improved chip removal for large hole and deep hole machining according to claim 1, characterized in that: The limiting strips (9) are configured as semi-cylindrical limiting strips, and four groups of the limiting strips (9) are provided. The four groups of the limiting strips (9) are distributed in an annular shape and at equal distances on the outer wall of the limiting column (8).

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