Special cutter for deep hole machining

Abstract

The utility model discloses a special cutter for deep hole machining, which comprises a cutter handle, a cutter body is arranged at one end of the cutter handle, a cutter head is arranged at one end of the cutter body, a first step surface is arranged at one end, close to the cutter handle, of the cutter body, a second step surface is arranged at one end, close to the cutter head, of the cutter body, and a traction mechanism is arranged on the cutter head. The traction mechanism comprises a guide portion fixedly connected to one end of the tool bit, a third step face is arranged at the end, close to the tool bit, of the guide portion, a drill bit is arranged at one end of the guide portion, and a first chip groove is formed in the outer wall of the guide portion. According to the tool special for deep hole machining, through the arranged traction mechanism, the front edge of a deep hole can be pre-drilled when the tool bit punches holes, the drilling efficiency can be improved, meanwhile, the tool bit can keep an original path for continuous drilling, and therefore the phenomenon that the tool bit deviates is effectively prevented, and the drilling precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a special tool for deep hole machining. Background Art

[0002] As technology advances, machining requirements for parts in mechanical applications are becoming increasingly demanding. In machining, holes with a depth-to-diameter ratio greater than six are typically referred to as deep holes. Deep-hole cutters are tools specifically designed for deep hole machining and can be categorized as either external or internal chip removal. Traditional deep-hole cutters are typically integrated.

[0003] Publication number CN 217253077 U discloses a deep hole processing tool, which includes a tool bar with a main chip groove and a secondary chip groove; one end of the main chip groove and the secondary chip groove are respectively placed at the end of the tool bar. A processing tool set is fixed to the end of the tool bar, including an outer cylindrical cutting blade, an end cutting blade and a chipping blade, and the outer cylindrical cutting blade and the end cutting blade are respectively fixed on the groove wall of the main discharge groove, and the distance between the outer edge of the outer cylindrical cutting blade and the center of the tool bar is greater than the radius of the tool bar. A gap is left between the outer cylindrical cutting blade and the end cutting blade, and the chipping blade is fixed on the groove wall of the secondary chip groove. When the tool bar rotates, the area passed by the gap is placed within the area passed by the chipping blade. In fact, the new practical model uses multiple blades to cooperate with each other to break the metal chips formed during the punching process into small pieces to facilitate the discharge of metal chips.

[0004] However, this processing has the following shortcomings. When the tool is drilling, due to the extremely large hole depth and small hole diameter, the machining system has poor rigidity, and the tool is very likely to vibrate during the machining process, which leads to poor deep hole machining accuracy. The front end of the blade is easy to deviate from the original drilling path during drilling, and the drilling is offset, affecting the drilling accuracy.

[0005] Therefore, the utility model provides a special tool for deep hole processing to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a special tool for deep hole processing, which solves the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a special tool for deep hole processing, comprising a tool handle, a tool body is provided at one end of the tool handle, a tool head is provided at one end of the tool body, a first step surface is provided at the end of the tool body close to the tool handle, a second step surface is provided at the end of the tool body close to the tool head, and a traction mechanism is provided on the tool head;

[0008] The traction mechanism includes a guide portion fixedly connected to one end of the cutter head, a third step surface is provided at the end of the guide portion close to the cutter head, a drill bit is provided at one end of the guide portion, a first chip groove is provided on the outer wall of the guide portion, a transverse cutting edge is provided on the first chip groove, and a longitudinal cutting edge is provided on the first chip groove.

[0009] Preferably, a second chip groove is provided on the cutter body, a third chip groove is provided on the cutter head, the third chip groove is connected to the second chip groove, the third chip groove is connected to the first chip groove, and an extended blade is provided in the third chip groove. The second chip groove, the third chip groove and the extended blade are used in combination to facilitate drilling and chip removal, which is convenient to use.

[0010] Preferably, the outer wall of the cutter head is provided with three mounting grooves, each of the three mounting grooves is provided with a fixing bar, and the outer wall of the fixing bar is fixedly connected with an extrusion piece. By using the provided mounting grooves, fixing bars and extrusion pieces in combination, deep holes can be conveniently guided and drilling accuracy can be improved.

[0011] Preferably, two screw holes are provided on the inner wall of the mounting groove, and two receiving grooves are provided on the fixing bar. Bolts are provided in the receiving grooves, and the bolt threads pass through the fixing bar. One end of the bolt thread extends into the corresponding screw holes. The fixing bar can be conveniently fastened and installed in the mounting groove by using the provided screw holes, receiving grooves and bolts in combination.

[0012] Preferably, a placement portion is provided at one end of the knife handle, and a plurality of semicircular grooves are provided on the placement portion. The placement portion and the semicircular grooves are used in combination to facilitate the fixing and installation of the knife handle.

[0013] Preferably, a clamping handle is provided at one end of the placement portion, and two flat portions are provided on the clamping handle. The clamping handle and the flat portions are used in combination to conveniently drive the cutter head to rotate and stop, making operation and use more convenient.

[0014] Preferably, an oil inlet is provided on the clamping handle, and an extension hole is provided on the tool handle, and the extension hole is communicated with the inside of the oil inlet. The oil inlet and the extension hole are used in combination to facilitate the delivery of lubricating oil.

[0015] Preferably, a Y-shaped spray hole is provided on the cutter head, the Y-shaped spray hole is connected to the inside of the extension hole, the Y-shaped spray hole is connected to the third chip groove, and the Y-shaped spray hole is connected to the first chip groove. The Y-shaped spray hole can be used to conveniently discharge the lubricating oil into the first chip groove and the third chip groove, which is convenient for cooling and lubrication.

[0016] Beneficial effects

[0017] The utility model provides a special tool for deep hole processing. Compared with the existing technology, it has the following advantages:

[0018] (1) The special tool for deep hole processing can pre-drill the front edge of the deep hole when the cutter head is drilling through the traction mechanism, which can improve the drilling efficiency and enable the cutter head to maintain the original path and continue drilling, thereby effectively preventing the cutter head from deviating and improving the drilling accuracy.

[0019] (2) The special tool for deep hole processing can conveniently fix the tool handle by using the provided placement part and the semicircular groove, making it easy to install. At the same time, the provided clamping handle and the flat part can conveniently drive the tool head to rotate and stop, making it easy to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of the external structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the cutter head and guide portion of the present invention;

[0023] Figure 4 It is an assembly drawing of the fixing strip in the utility model.

[0024] In the figure: 1. Tool handle; 2. Tool body; 3. Tool head; 4. First step surface; 5. Second step surface; 6. Guide portion; 7. Third step surface; 8. Drill bit; 9. First chip groove; 10. Transverse cutting edge; 11. Longitudinal cutting edge; 12. Second chip groove; 13. Third chip groove; 14. Extension blade; 15. Mounting groove; 16. Fixing strip; 17. Extrusion piece; 18. Screw hole; 19. Accommodating groove; 20. Bolt; 21. Placement portion; 22. Semicircular groove; 23. Clamping handle; 24. Flat portion; 25. Oil inlet; 26. Extension hole; 27. Y-shaped spray hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1:

[0027] See also Figure 1 、 Figure 2 and Figure 3 A special tool for deep hole processing includes a tool handle 1, a tool body 2 is provided at one end of the tool handle 1, a tool head 3 is provided at one end of the tool body 2, a first step surface 4 is provided at the end of the tool body 2 close to the tool handle 1, a second step surface 5 is provided at the end of the tool body 2 close to the tool head 3, and a traction mechanism is provided on the tool head 3;

[0028] The traction mechanism includes a guide portion 6 fixedly connected to one end of the cutter head 3, a third step surface 7 is provided at the end of the guide portion 6 close to the cutter head 3, a drill bit 8 is provided at one end of the guide portion 6, a first chip groove 9 is provided on the outer wall of the guide portion 6, a transverse cutting edge 10 is provided on the first chip groove 9, and a longitudinal cutting edge 11 is provided on the first chip groove 9.

[0029] Example 2:

[0030] See also Figures 1 to 4 This embodiment provides a technical solution based on the first embodiment: a second chip removal groove 12 is provided on the cutter body 2, and a third chip removal groove 13 is provided on the cutter head 3. The third chip removal groove 13 is connected to the second chip removal groove 12, and the third chip removal groove 13 is connected to the first chip removal groove 9. An extended blade 14 is provided in the third chip removal groove 13; three mounting grooves 15 are provided on the outer wall of the cutter head 3, and a fixing strip 16 is provided in each of the three mounting grooves 15. The outer wall of the fixing strip 16 is fixedly connected to an extrusion piece 17; two screw holes 18 are provided on the inner wall of the mounting groove 15, and two receiving grooves 19 are provided on the fixing strip 16. Bolts 20 are provided in the receiving groove 19. The bolt 20 is threaded through the fixing bar 16, and one end of the bolt 20 is threadedly extended into the corresponding screw hole 18; a placement portion 21 is provided at one end of the tool handle 1, and a plurality of semicircular grooves 22 are provided on the placement portion 21; a clamping handle 23 is provided at one end of the placement portion 21, and two flat portions 24 are provided on the clamping handle 23; an oil inlet 25 is provided on the clamping handle 23, and an extension hole 26 is provided on the tool handle 1, and the extension hole 26 is connected to the interior of the oil inlet 25; a Y-shaped spray hole 27 is provided on the cutter head 3, and the Y-shaped spray hole 27 is connected to the interior of the extension hole 26, the Y-shaped spray hole 27 is connected to the third chip removal groove 13, and the Y-shaped spray hole 27 is connected to the first chip removal groove 9.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] It should also be noted that, in the description herein, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool for deep hole processing, comprising a tool handle (1), characterized in that: A blade body (2) is provided at one end of the blade handle (1), a blade head (3) is provided at one end of the blade body (2), a first step surface (4) is provided at the end of the blade body (2) close to the blade handle (1), a second step surface (5) is provided at the end of the blade body (2) close to the blade head (3), and a traction mechanism is provided on the blade head (3); The traction mechanism comprises a guide portion (6) fixedly connected to one end of a cutter head (3); a third step surface (7) is provided at one end of the guide portion (6) close to the cutter head (3); a drill bit (8) is provided at one end of the guide portion (6); a first chip removal groove (9) is provided on the outer wall of the guide portion (6); a transverse cutting edge (10) is provided on the first chip removal groove (9); and a longitudinal cutting edge (11) is provided on the first chip removal groove (9).

2. The deep hole machining tool according to claim 1, characterized in that: The cutter body (2) is provided with a second chip removal groove (12), the cutter head (3) is provided with a third chip removal groove (13), the third chip removal groove (13) is connected to the second chip removal groove (12), the third chip removal groove (13) is connected to the first chip removal groove (9), and an extended blade (14) is provided in the third chip removal groove (13).

3. The deep hole machining tool according to claim 1, characterized in that: The outer wall of the cutter head (3) is provided with three mounting grooves (15), each of the three mounting grooves (15) is provided with a fixing strip (16), and the outer wall of each fixing strip (16) is fixedly connected with an extrusion sheet (17).

4. The deep hole machining tool according to claim 3, characterized in that: Two screw holes (18) are provided on the inner wall of the installation groove (15), and two receiving grooves (19) are provided on the fixing bar (16). Bolts (20) are provided in the receiving grooves (19), and the bolts (20) are threadedly passed through the fixing bar (16), and one end of the bolt (20) is threadedly extended into the corresponding screw hole (18).

5. The deep hole machining tool according to claim 1, characterized in that: One end of the knife handle (1) is provided with a placement portion (21), and a plurality of semicircular grooves (22) are provided on the placement portion (21).

6. The deep hole machining tool according to claim 5, characterized in that: A clamping handle (23) is provided at one end of the placement portion (21), and two flat portions (24) are provided on the clamping handle (23).

7. The deep hole machining tool according to claim 6, characterized in that: An oil inlet (25) is provided on the clamping handle (23), and an extension hole (26) is provided on the tool handle (1), wherein the extension hole (26) is communicated with the interior of the oil inlet (25).

8. The deep hole machining tool according to claim 7, characterized in that: The cutter head (3) is provided with a Y-shaped spray hole (27), the Y-shaped spray hole (27) is connected to the interior of the extension hole (26), the Y-shaped spray hole (27) is connected to the third chip removal groove (13), and the Y-shaped spray hole (27) is connected to the first chip removal groove (9).

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