Turning device suitable for large-diameter inner hole

Abstract

The utility model provides a turning device suitable for a large-diameter inner hole, which is applied to the technical field of machining, and is characterized by comprising a mounting base and a cutter bar mounted on the mounting base, a drilling blade is detachably mounted at the end of the cutter bar, a hollow hole is formed in the middle of the cutter bar, and a waste core cut by the drilling blade enters the hollow hole. A cutting tool bit for further turning a hole is coaxially assembled at the end part of the tool bar without the drilling blade; the drilling tool has the advantages that after drilling is completed, cut waste cores can be reserved in the hollow hole of the tool bar, and secondary use of the waste cores is achieved; and after drilling is completed, the cutting tool bit is installed on the tool bar, and then the hole can be further turned, so that secondary centering is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a turning device suitable for large-diameter inner holes. Background Art

[0002] Among mechanical parts, parts with holes generally account for 50% to 80% of the total number of parts. There are many types of holes, such as cylindrical holes, conical holes, threaded holes, and formed holes. The inner hole surface is also one of the important surfaces of mechanical parts.

[0003] At present, in turning processing, an internal hole turning tool is often used to process the internal hole of the workpiece. The internal hole turning tool is generally composed of a tool rod and a tool head, and the blade is fixed in the tool rod groove of the tool head by bolts; during processing, the blade is first aligned with the workpiece to be processed. After the centering is accurate, the horizontal position of the internal hole turning tool is adjusted according to the diameter of the inner hole of the workpiece. The horizontal distance of the adjustment is slightly smaller than the radius of the inner hole of the workpiece. After the adjustment, the inner hole of the workpiece is started to be processed; the processing sequence is generally: use a drill bit to drill the workpiece, and then use an internal hole tool for turning; this processing method is cumbersome to operate, with low processing efficiency and high fatigue strength; and when processing parts with a larger inner hole diameter, conventional tool processing is used to turn from a small diameter to a large diameter, resulting in a large amount of waste cutting, resulting in a waste of raw materials. Utility Model Content

[0004] The utility model aims to provide a turning device suitable for large-diameter inner holes, which has the advantages of collecting cutting waste and avoiding the waste of raw materials, while improving the processing efficiency and reducing fatigue strength.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] A turning device suitable for large-diameter inner holes, comprising a mounting base and a tool bar mounted on the mounting base;

[0007] A drilling blade is detachably mounted on the end of the tool bar, a hollow hole is provided in the middle of the tool bar, and the waste core cut off by the drilling blade enters the hollow hole;

[0008] The end of the tool bar from which the drilling insert has been removed is coaxially fitted with a cutting head for further turning the hole.

[0009] Through the above technical scheme, the mounting base is used to support the tool rod and fix the tool rod on the tool holder of the machine tool; a hollow hole is arranged in the middle of the tool rod, and during the drilling process, the waste core removed by the drilling blade will enter the hollow hole and remain in the hollow hole tube, thereby realizing the collection and secondary utilization of the waste; when the drilling process is completed, the drilling blade is removed, and the cutting head is installed on the tool rod to further turn the hole, thereby avoiding secondary centering and improving production efficiency.

[0010] In one embodiment of the utility model, the end of the tool bar is symmetrically provided with two blade grooves, the blade groove is provided with a groove and a convex block, and the drilling blade is provided with a reverse convex block and a reverse groove that cooperate with the groove and the convex block;

[0011] The knife rod is provided with a first threaded hole penetrating through the blade slot, and a first screw whose end abuts against the drilling blade is meshedly connected in the first threaded hole.

[0012] Through the above technical solution, the blade slot is used to install the drilling blade; the groove and protrusion on the blade slot are used to cooperate with the reverse protrusion and reverse groove on the drilling blade to limit the position of the drilling blade; the first screw and the first threaded hole are used to fix the drilling blade on the tool rod, thereby realizing a detachable connection between the drilling blade and the tool rod.

[0013] In one embodiment of the utility model, the tool rod is axially provided with a cutting fluid hole penetrating the tool rod, one end of the cutting fluid hole is connected to the cutting fluid pipe through a pipe joint, and the other end is connected to the blade groove.

[0014] Through the above technical solution, the cutting fluid hole is used to guide the cutting fluid to the blade groove, so as to cool the blade and the workpiece during the drilling process of the drilling blade.

[0015] In one embodiment of the present invention, the cutting tool head includes a chuck body and a cutting tool mounted on the chuck body;

[0016] The chuck body is provided with a tool rod groove connected with the tool rod, and the chuck body is radially provided with a third threaded hole; the tool rod is radially provided with a second threaded hole that penetrates the tool rod and cooperates with the third threaded hole and fixes the chuck body and the tool rod together through a top screw.

[0017] Through the above technical solution, the tool rod is inserted into the tool rod groove, and the top screw cooperates with the second threaded hole and the third threaded hole to fix the cutting head on the tool rod. Therefore, after the drilling is completed, it is convenient to install the cutting head on the tool rod to realize the turning process of the hole, avoid secondary centering, and improve production efficiency.

[0018] In an embodiment of the present invention, a cutting fluid hole section communicating with the cutting fluid hole is formed on the chuck body.

[0019] Through the above technical solution, the cutting fluid hole section is connected to the cutting fluid hole, thereby cooling the cutting tool.

[0020] In one embodiment of the present utility model, the mounting base includes a supporting base for supporting the knife bar and a fixing base for fixing the knife bar;

[0021] The support base comprises a lower shell, an upper shell hinged to the lower shell, and a plurality of top columns engaged with the upper shell and the lower shell;

[0022] The upper shell is provided with an upper arc, and the lower shell is provided with a lower arc. The upper arc and the lower arc are assembled to form a circular hole for accommodating the knife rod. Several top columns penetrate the upper shell and the lower shell until one end is located in the circular hole and abuts against the side wall of the knife rod.

[0023] In an embodiment of the present invention, a support block is fixed on the top column.

[0024] Through the above technical solution, the upper shell and the lower shell are hinged, which is convenient for removing and installing the knife rod; the upper shell and the lower shell are assembled together, the knife rod is located in the circular hole, and a plurality of top columns are used to abut the side wall of the knife rod, thereby fixing the knife rod on the support base.

[0025] In an embodiment of the present invention, bases are integrally formed on two sides of the bottom of the lower shell, and a V-shaped groove is formed on one of the bases.

[0026] The above technical solution is used to install the lower base on the guide rail of the machine tool.

[0027] In one embodiment of the present invention, a T-shaped pressing plate is connected to the bottom of the lower shell, and the T-shaped pressing plate is meshed and connected to the lower shell via supporting bolts.

[0028] Through the above technical solution, the T-shaped pressure plate is installed between the machine tool guide rail and the bed.

[0029] As described above, the turning device of the utility model suitable for large diameter inner holes has the following beneficial effects:

[0030] 1. It solves the problem that conventional internal hole turning tools need to drill holes in advance during processing, which is inefficient;

[0031] 2. When machining parts with larger inner diameters, conventional tool machining is performed from small diameter to large diameter, resulting in a large amount of waste cutting and a waste of raw materials;

[0032] 3. After drilling, the removed waste core will remain in the hollow hole of the tool bar, so that the waste core can be reused for the second time. After drilling, the cutting head can be installed on the tool bar to further turn the hole, thus avoiding secondary centering and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0034] Figure 2 It is a schematic diagram of the structure of the knife bar of an embodiment of the utility model;

[0035] Figure 3 yes Figure 2 The enlarged schematic diagram of part A in the middle;

[0036] Figure 4 yes Figure 2 The enlarged schematic diagram of part B in the middle;

[0037] Figure 5 is a cross-sectional view of the connection between the tool rod and the cutting tool head of an embodiment of the utility model;

[0038] Figure 6 It is a structural schematic diagram of a fixed base according to an embodiment of the utility model.

[0039] 1. Mounting base; 2. Supporting base; 3. Fixed base; 4. Tool bar; 5. Drilling blade; 6. Hollow hole; 7. Cutting bit; 8. Blade slot; 9. Groove; 10. Bump; 11. First threaded hole; 12. Cutting fluid hole; 71. Chuck body; 72. Cutting tool; 15. Tool bar slot; 16. Third threaded hole; 17. Second threaded hole; 18. Top screw; 19. Cutting fluid hole section; 201. Lower shell; 202. Upper shell; 203. Top column; 23. Upper arc; 24. Lower arc; 26. Support block; 27. Base; 28. V-shaped groove; 29. ​​T-shaped pressure plate; 30. Support bolt; 31. Cutting fluid threaded hole; 32. Threaded section; 33. Flat bed tool bar sleeve; 34. Inclined bed tool bar sleeve; 36. Cutting fluid pipe; 37. Pipe joint. DETAILED DESCRIPTION

[0040] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0041] See also Figures 1 to 6It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0042] See also Figure 1 , the utility model provides a turning device suitable for large diameter inner holes, comprising a mounting base 1 and a tool bar 4 mounted on the mounting base 1;

[0043] A drilling blade 5 is detachably mounted on the end of the cutter bar 4, and a hollow hole 6 is provided in the middle of the cutter bar 4, and the waste core cut off by the drilling blade 5 enters the hollow hole 6;

[0044] The end of the tool bar 4 from which the drilling insert 5 has been removed is coaxially mounted with a cutting head 7 for further turning the hole.

[0045] See also Figure 1 The mounting base 1 includes a supporting base 2 for supporting the knife bar 4 and a fixing base 3 for fixing the knife bar 4;

[0046] The support base 2 includes a lower shell 201, an upper shell 202, and three top columns 203 meshed with the upper shell 202 and the lower shell 201; the top column 203 includes a screw rod and a plum blossom handle integrally formed on the screw rod; a support block 26 is bolted to the screw rod, and the support block 26 is made of rubber; one side of the upper shell 202 is hinged to the lower shell 201, and a connecting plate is integrally formed on the other side of the upper shell 202 and the lower shell 201, and a threaded hole is opened on the connecting plate, and the upper shell 202 and the lower shell 201 are locked together by bolts;

[0047] An upper arc 23 is provided in the middle of the upper shell 202, and a lower arc 24 is provided in the middle of the lower shell 201. The upper arc 23 and the lower arc 24 are assembled to form a circular hole for accommodating the knife rod 4. The aperture of the circular hole is larger than the rod diameter of the knife rod 4. Three top columns 203 are equidistantly distributed and penetrate the upper shell 202 and the lower shell 201 until one end is located in the circular hole. The support block 26 abuts against the side wall of the knife rod 4, thereby fixing the knife rod 4 on the support base 2.

[0048] Bases 27 are integrally formed on both sides of the bottom of the lower shell 201, and a V-shaped groove 28 is opened on one of the bases 27 for mounting the support base 2 on the machine tool guide rail; a T-shaped pressure plate 29 is connected to the bottom of the lower shell 201, and the T-shaped pressure plate 29 is engaged with the lower shell 201 through a support bolt 30. The T-shaped pressure plate 29 is installed between the machine tool guide rail and the bed, thereby restricting the support base 2 on the machine tool.

[0049] See also Figure 6 The fixed base 3 is divided into two types: a flat bed tool rod sleeve 33 and an inclined bed tool rod sleeve 34. The flat bed tool rod sleeve 33 is clamped on a flat bed lathe to have 4 tool positions, and the inclined bed tool rod sleeve 34 is clamped on an inclined bed lathe to have multiple tool positions. Connecting screw holes are provided on the flat bed tool rod sleeve 33 and the inclined bed tool rod sleeve 34, and the fixed base 3 is connected and fixed to the machine tool tool holder by cooperating with the connecting screw holes and bolts.

[0050] See also Figure 2 , Figure 3 and Figure 4 Two blade grooves 8 are symmetrically arranged at the end of the tool rod 4, and grooves 9 and protrusions 10 are arranged on the inner walls of the upper and lower sides of the blade grooves 8, and the drilling blade 5 is provided with a reverse protrusion and a reverse groove that cooperate with the grooves 9 and the protrusions 10;

[0051] The side walls on both sides of the cutter bar 4 are respectively provided with first threaded holes 11 penetrating the blade slot 8, and a first screw whose end abuts against the drilling blade 5 is meshedly connected in the first threaded hole 11;

[0052] The tool rod 4 near the two blade grooves 8 is axially provided with a cutting fluid hole 12 passing through the tool rod 4, one end of the cutting fluid hole 12 is connected to the cutting fluid tube 36 through a pipe joint 37, and the other end is connected to the blade groove 8; the cutting fluid hole 12 away from the blade groove 8 is connected to the cutting fluid threaded hole 31, and the outer wall of one side of the pipe joint 37 is provided with a threaded section 32 meshing with the cutting fluid threaded hole 31, and the pipe joint 37 is screwed into the cutting fluid threaded hole 31 to be connected to the tool rod 4; the other end of the pipe joint 37 is a female head, and the female head is assembled together with the male head of the cutting fluid tube 36.

[0053] See also Figure 1 and Figure 5 The cutting tool head 7 includes a chuck body 71 and a cutting tool 72 mounted on the chuck body 71; a tool groove is provided on one side of the chuck body 71, and a tool bar groove 15 plugged with the tool bar 4 is provided on the other side, and the cutting tool 72 is assembled with the tool groove and fixed by a tool pressing screw;

[0054] A third threaded hole 16 is radially formed on the chuck body 71; a second threaded hole 17 is radially formed on the tool rod 4 and penetrates through the tool rod 4 and cooperates with the third threaded hole 16 and fixes the chuck body 71 and the tool rod 4 together through a top screw 18;

[0055] The chuck body 71 is provided with a cutting fluid hole section 19 which is in communication with the cutting fluid hole 12 . The cutting fluid hole section 19 is in communication with the tool groove, thereby cooling the cutting tool 72 .

[0056] Brief description of the use process: the drilling blade 5 is installed in the blade slot 8, the first screw cooperates with the first threaded hole 11 to realize the installation of the drilling blade 5; the right end face of the tool rod 4 is aligned with the right end face of the tool rod 4 sleeve, and they are fixed by bolts to realize the assembly of the tool rod 4 and the tool rod sleeve 4;

[0057] The rear end of the pipe joint 37 is connected and assembled with the front end of the cutting fluid pipe 36, and the female end of the pipe joint 37 is respectively assembled with the male end of the cutting fluid pipe 36, so that the cutting fluid pipe 36 is assembled with the tool bar 4;

[0058] The base 27 and the V-shaped groove 28 are installed on the machine tool guide rail, and the T-shaped pressure plate 29 is installed between the machine tool guide rail and the bed, and is engaged and connected with the lower shell 201 through the support bolts 30 to realize the installation of the support base 2;

[0059] When in use, the tool bar 4 passes through the upper arc 23 and the lower arc 24, and the top column 203 is adjusted to contact with the tool bar 4 by rotating the plum blossom handle to achieve drilling processing;

[0060] After drilling is completed, the drilling tool is removed, the tool bar 4 is assembled with the left end face of the tool bar groove 15, and is respectively connected and fixed with the second threaded hole 17 and the third threaded hole 16 through the top screw 18 to realize the installation of the cutting head 7 and perform turning processing on the hole.

[0061] In summary, the utility model not only keeps the cut waste core in the cutter bar 4, realizing the secondary use of the waste core and avoiding the waste of raw materials; after the drilling is completed, the cutting head 7 is installed on the cutter bar 4 to further turn the hole, thereby avoiding secondary centering and improving production efficiency. Therefore, the utility model effectively overcomes various shortcomings of the prior art and has a high industrial utilization value.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A turning device suitable for large diameter inner holes, characterized in that: It comprises a mounting base (1) and a knife rod (4) mounted on the mounting base (1); A drilling blade (5) is detachably mounted on the end of the knife rod (4), a hollow hole (6) is provided in the middle of the knife rod (4), and the waste core cut off by the drilling blade (5) enters the hollow hole (6); The end of the tool rod (4) from which the drilling blade (5) has been removed is coaxially equipped with a cutting head (7) for further turning the hole.

2. A turning device suitable for large diameter inner holes according to claim 1, characterized in that: The end of the knife bar (4) is symmetrically provided with two blade grooves (8), the blade groove (8) is provided with a groove (9) and a convex block (10), and the drilling blade (5) is provided with a reverse convex block and a reverse groove that cooperate with the groove (9) and the convex block (10); The knife rod (4) is provided with a first threaded hole (11) penetrating the blade slot (8), and a first screw whose end abuts against the drilling blade (5) is meshedly connected inside the first threaded hole (11).

3. A turning device suitable for large diameter inner holes according to claim 2, characterized in that: The tool rod (4) is axially provided with a cutting fluid hole (12) penetrating the tool rod (4); one end of the cutting fluid hole (12) is connected to the cutting fluid pipe (36) via a pipe joint (37), and the other end is connected to the blade groove (8).

4. A turning device suitable for large diameter inner holes according to claim 3, characterized in that: The cutting tool head (7) comprises a chuck body (71) and a cutting tool (72) mounted on the chuck body (71); The chuck body (71) is provided with a shank groove (15) for plugging into the shank (4); the chuck body (71) is radially provided with a third threaded hole (16); the shank (4) is radially provided with a second threaded hole (17) which penetrates the shank (4) and cooperates with the third threaded hole (16) and fixes the chuck body (71) and the shank (4) together through a top screw (18).

5. A turning device suitable for large diameter inner holes according to claim 4, characterized in that: The chuck body (71) is provided with a cutting fluid hole section (19) which is in communication with the cutting fluid hole (12).

6. A turning device suitable for large diameter inner holes according to claim 1, characterized in that: The mounting base (1) comprises a supporting base (2) for supporting the knife rod (4) and a fixing base (3) for fixing the knife rod (4); The support base (2) comprises a lower shell (201), an upper shell (202) hinged to the lower shell (201), and a plurality of top columns (203) engaged with the upper shell (202) and the lower shell (201); An upper circular arc (23) is provided on the upper shell (202), and a lower circular arc (24) is provided on the lower shell (201); the upper circular arc (23) and the lower circular arc (24) are assembled to form a circular hole for accommodating the knife rod (4); a plurality of top columns (203) penetrate the upper shell (202) and the lower shell (201) until one end is located in the circular hole and abuts against the side wall of the knife rod (4).

7. A turning device suitable for large diameter inner holes according to claim 6, characterized in that: A support block (26) is fixed on the top column (203).

8. A turning device suitable for large diameter inner holes according to claim 6, characterized in that: Bases (27) are integrally formed on both sides of the bottom of the lower shell (201), and a V-shaped groove (28) is formed on one of the bases (27).

9. A turning device suitable for large diameter inner holes according to claim 8, characterized in that: A T-shaped pressing plate (29) is connected to the bottom of the lower shell (201), and the T-shaped pressing plate (29) is meshedly connected to the lower shell (201) via supporting bolts (30).

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