Deep hole machining device and method for cutter

Abstract

The invention relates to the field of deep hole machining, in particular to a deep hole machining device of a cutter and a machining method.The deep hole machining device of the cutter comprises a workbench, a drill rod arranged on the workbench and a supporting mechanism, and the supporting mechanism comprises a plurality of supporting rods installed on the circumferential face of the drill rod in a sliding mode; the multiple supporting rods are circumferentially and evenly distributed around the axis of the drill rod and can make contact with the inner wall of a deep hole in a workpiece, and a driving mechanism used for driving the multiple supporting rods to move synchronously is installed on the drill rod. The problem that the straightness and the surface roughness of the deep hole are affected is solved.

Description

Technical Field

[0001] This invention relates to the field of deep hole machining, and in particular to a deep hole machining apparatus and method for a cutting tool. Background Technology

[0002] Deep hole machining refers to the machining of holes where the ratio of depth to diameter (length-to-diameter ratio, L / D) is greater than a certain value (common standards are L / D > 5 or 6), and in some extreme cases, the length can even be greater. This type of hole machining requires high precision and surface quality. It is also affected by factors such as poor machinability of the material being machined, and limitations imposed on the tool holder by the hole diameter (e.g., small diameter, large length leading to poor rigidity and low strength). Vibration is easily generated during cutting, which in turn affects the straightness and surface roughness of the deep hole, becoming a major challenge in production.

[0003] In related technologies, please refer to Chinese invention application CN119328201A, which discloses a deep hole machining axis correction device, including a drill bit, a drive assembly for driving the drill bit to rotate, a drill rod connected to a support circular plate in the drive assembly, a power assembly for driving the drill rod to rotate forward, and an adjustment mechanism. The adjustment mechanism includes an adjustment cylinder and an adjustment plate. The number of adjustment cylinders is 4 and they are evenly distributed on the adjustment plate. A circular hole is provided in the center of the adjustment plate, through which the drill rod passes. An adjustment arc plate is connected to the end of the piston rod of the adjustment cylinder. The adjustment plate is fixed to the base plate by a connecting rod. The adjustment arc plate can contact the drill rod. When the adjustment cylinder is activated, the adjustment cylinder drives the adjustment arc plate to contact the drill rod, preventing the drill rod from deviating during the drilling process.

[0004] Regarding the aforementioned technologies, if only the adjusting arc plate is used to limit the drill rod, the drill rod will still easily vibrate as it gradually penetrates the workpiece, which will affect the straightness and surface roughness of the deep hole. Summary of the Invention

[0005] To address the issues affecting the straightness and surface roughness of deep holes, this invention provides a deep hole machining apparatus and method for cutting tools.

[0006] In a first aspect, the deep hole machining apparatus for cutting tools provided by the present invention adopts the following technical solution: A deep hole machining apparatus for a cutting tool includes a worktable, a drill rod disposed on the worktable, and a support mechanism. The support mechanism includes a plurality of support rods slidably mounted on the circumferential surface of the drill rod. The plurality of support rods are evenly distributed circumferentially around the axis of the drill rod. Each of the plurality of support rods can contact the inner wall of the deep hole in the workpiece. A drive mechanism for driving the plurality of support rods to move synchronously is installed on the drill rod.

[0007] Preferably, the drill rod is fitted with a telescopic ring, and when the telescopic ring expands outward, the outer circumferential surface of the telescopic ring can contact the inner wall of the deep hole on the workpiece. The drill rod is equipped with a scaling mechanism for driving the telescopic ring to shrink and expand.

[0008] Preferably, a cleaning mechanism is installed on the drill pipe. The cleaning mechanism includes a cleaning ring slidably installed on the drill pipe. The axis of the cleaning ring is the same as the axis of the drill pipe. The cleaning ring can rotate around the axis of the drill pipe. A cleaning rod that can fit against the outer circumferential surface of the drill pipe is fixedly connected to the cleaning ring. The cleaning mechanism also includes a connecting member for driving the cleaning ring to rotate.

[0009] Preferably, the drill pipe has a support cavity formed therein, and a plurality of support rods extend into the support cavity. A plurality of support cylinders, each sleeved on a support rod, are rotatably mounted in the support cavity. Each of the plurality of support cylinders has an internal thread, and each of the plurality of support rods has an external thread that engages with the internal thread. The drive mechanism includes a drive rod rotatably mounted in the support cavity, a first bevel gear fixedly connected to the drive rod, and a second bevel gear meshing with the first bevel gear fixedly connected to each of the plurality of support cylinders.

[0010] Preferably, the drill rod has an installation groove on its end face, the drive rod has a spiral groove, a drive plate that is spirally connected to the drive rod is slidably installed in the installation groove, a baffle is hinged to the drive plate, the baffle can contact the workpiece, and a limiting member for limiting the baffle is installed on the drive plate.

[0011] Preferably, a torsion spring is sleeved on the hinge shaft installed in the baffle, a limit groove is formed on the drive plate, and the limiting component includes a limit spring fixedly connected to the inner wall of the limit groove and a limit block slidably installed in the limit groove. The limit block is fixedly connected to the limit spring and abuts against the baffle. An abutment block is fixedly connected to the inner wall of the mounting groove, and a limiting inclined surface that can contact the abutment block is formed at the end of the limit block away from the limit spring.

[0012] Preferably, a first L-shaped rod is fixedly connected to the workbench, a connecting rod is fixedly connected to the first L-shaped rod, a second L-shaped rod is fixedly connected to the connecting rod, a first magnet is embedded in the second L-shaped rod, and a first iron block that cooperates with the first magnet is embedded in the baffle.

[0013] Preferably, sealing plates are fixedly connected to both sides of the drive plate, and the opposite ends of the two sealing plates are inserted through the inner wall of the mounting groove, with the side walls of the two sealing plates in contact with the inner wall of the mounting groove.

[0014] Preferably, the support mechanism and the telescopic ring are arranged in multiple sets at equal intervals along the length of the drill rod.

[0015] Secondly, the deep hole machining method for a cutting tool provided by the present invention adopts the following technical solution: A method for machining deep holes with a cutting tool includes the following steps: S1. First, place the workpiece in the fixed cylinder and use limit clamps to fix the workpiece. S2. Then start the first motor and the second motor so that the drill rod drives the cutting blade to drill holes in the workpiece; S3. As the drill rod gradually penetrates deeper into the workpiece, the baffle comes into contact with the workpiece, the baffle moves relative to the drill rod, and the baffle drives multiple support rods to extend outward and contact the inner wall of the deep hole on the workpiece. S4. When the support rod contacts the inner wall of the deep hole, the limiting block separates from the baffle, the baffle flips over and enters the deep hole; S5. After the workpiece is drilled, the telescopic ring expands outward and contacts the inner wall of the deep hole on the workpiece. At the same time, the first motor drives the drill rod to be pulled out of the workpiece. The drill rod drives the telescopic ring to move. The telescopic ring cleans the debris remaining on the inner wall of the deep hole. S6. After the baffle is pulled out of the deep hole, the baffle flips to a vertical position, and the first magnet and the first iron block attract each other, which can retract the support rod. At the same time, the drive rod drives the cleaning ring to rotate, and the cleaning ring drives the cleaning rod to clean the outer circumference of the drill rod.

[0016] In summary, the present invention has at least the following beneficial technical effects: 1. When drilling is required, the workpiece is first placed in the fixed cylinder and fixed with limit calipers. Then, the first and second motors are started, causing the drill rod to drive the cutting blade to drill the workpiece. As the drill rod gradually penetrates the workpiece, multiple baffles abut against the workpiece in sequence. The baffles move relative to the drill rod, and the baffles drive the drive rod to rotate. The drive rod drives multiple support rods to extend outward and contact the inner wall of the deep hole on the workpiece, thereby supporting the drill rod and preventing it from vibrating. This solves the problem of affecting the straightness and surface roughness of the deep hole. 2. When the drill rod is pulled out of the workpiece, the scaling mechanism is activated. The scaling mechanism drives the telescopic ring to expand outward and contact the inner wall of the deep hole on the workpiece. The drill rod drives the telescopic ring to move, and the telescopic ring cleans the debris remaining on the inner wall of the deep hole. 3. When the drill rod is pulled out of the workpiece, the cleaning ring is rotated, which drives the cleaning rod to move, and the cleaning rod cleans the outer circumference of the drill rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the deep hole machining device for the cutting tool according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the drill pipe structure according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the telescopic ring according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the support mechanism according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the limiting member according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the drive mechanism according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the scaling mechanism according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Worktable; 11. First L-shaped rod; 12. Connecting rod; 13. Second L-shaped rod; 2. Clamping mechanism; 21. Clamping base; 22. Fixing cylinder; 23. Limiting caliper; 3. Drilling mechanism; 31. Mounting base; 32. First motor; 33. Drilling screw; 34. Second motor; 35. Drill rod; 36. Cutting blade; 4. Support mechanism; 41. Support rod; 42. Support cylinder; 421. Second bevel gear; 5. Drive mechanism; 51. Drive rod; 511. First bevel gear; 52. Drive plate; 5 21. Sealing plate; 53. Baffle; 54. Limiting spring; 55. Limiting block; 56. Abutment block; 6. Telescopic ring; 61. First arc plate; 62. Second arc plate; 7. Scaling mechanism; 71. Moving rod; 711. Second stop block; 72. First threaded cylinder; 721. First stop block; 73. First rotating rod; 731. Third bevel gear; 74. Second threaded cylinder; 741. Fourth bevel gear; 75. Second screw; 76. Moving ring; 8. Cleaning mechanism; 81. Cleaning ring; 82. Cleaning rod; 83. Rotating shaft; 84. Support rod. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 The present invention will be described in further detail below.

[0027] This invention discloses a deep hole machining apparatus and method for a cutting tool. (Refer to...) Figures 1 to 5The deep hole machining device for the cutting tool includes a worktable 1, a clamping mechanism 2, a drilling mechanism 3, and a support mechanism 4. The clamping mechanism 2 includes a clamping base 21 slidably mounted on the worktable 1. A fixed cylinder 22 for placing the workpiece is fixedly connected to the clamping base 21. Multiple limit clamps 23 are installed on the fixed cylinder 22. A cylinder for driving the clamping base 21 to move is fixedly connected to the worktable 1. The drilling mechanism 3 includes a mounting base 31 slidably mounted on the worktable 1, a drilling screw 33 rotatably mounted on the worktable 1, and a first motor 32 fixedly connected to the worktable 1. The output shaft of the first motor 32 is fixedly connected to the drilling screw 33. The drilling screw 33 is threadedly connected to the mounting base 31. A second motor 34 is fixedly connected to the mounting base 31. A drill rod 35 is fixedly connected to the output shaft of the second motor 34. A cutting tool is fixedly connected to the end of the drill rod 35 away from the second motor 34. The support mechanism 4 includes multiple support rods 41 slidably mounted on the circumferential surface of the drill rod 35. The multiple support rods 41 are evenly distributed circumferentially around the axis of the drill rod 35, and each of the multiple support rods 41 can contact the inner wall of the deep hole on the workpiece. The drill rod 35 is equipped with a drive mechanism 5 for driving the multiple support rods 41 to move synchronously. When drilling is required, the workpiece is first placed in the fixed cylinder 22 and fixed with the limit clamp 23. Then, the first motor 32 and the second motor 34 are started, so that the drill rod 35 drives the cutting blade 36 to drill the workpiece. As the drill rod 35 gradually penetrates into the workpiece, the drive mechanism 5 is started. The drive mechanism 5 drives the multiple support rods 41 to extend outward and contact the inner wall of the deep hole on the workpiece, thereby supporting the drill rod 35 and preventing the drill rod 35 from vibrating. This solves the problem of affecting the straightness and surface roughness of the deep hole.

[0028] A ball groove is provided on the end face of the support rod 41 away from the drill rod 35. A ball is placed in the ball groove and the ball contacts the inner wall of the deep hole to reduce the friction between the support rod 41 and the inner wall of the deep hole.

[0029] Reference Figures 3 to 7 A telescopic ring 6 is fitted on the drill rod 35. When the telescopic ring 6 expands outward, its outer circumferential surface can contact the inner wall of the deep hole on the workpiece. A scaling mechanism 7 is installed on the drill rod 35 to drive the telescopic ring 6 to shrink and expand. The telescopic ring 6 is composed of multiple first arc plates 61 and multiple second arc plates 62. The first arc plates 61 and second arc plates 62 are staggered. The two ends of the second arc plates 62 are respectively inserted into two adjacent first arc plates 61. The second arc plates 62 are slidably connected to the first arc plates 61 and to the support rod 41. Moving the first arc plates 61 controls the expansion and shrinkage of the telescopic ring 6. When the support rod 41 extends outward, it cannot drive the second arc plates 62 to expand outward. The first arc plates 61 are connected to the scaling mechanism 7, which drives the first arc plates 61 to expand outward, thereby enlarging the telescopic ring 6.

[0030] Reference Figures 3 to 5 A cleaning mechanism 8 is installed on the drill rod 35. The cleaning mechanism 8 includes a cleaning ring 81 slidably installed on the drill rod 35. The axis of the cleaning ring 81 is the same as the axis of the drill rod 35. The cleaning ring 81 can rotate around the axis of the drill rod 35. A cleaning rod 82 that can fit against the outer peripheral surface of the drill rod 35 is fixedly connected to the cleaning ring 81. The cleaning mechanism 8 also includes a connecting piece for driving the cleaning ring 81 to rotate. When the drill rod 35 is pulled out of the workpiece, the cleaning ring 81 is rotated, and the cleaning ring 81 drives the cleaning rod 82 to move. The cleaning rod 82 cleans the outer peripheral surface of the drill rod 35.

[0031] Reference Figures 3 to 7 The drill pipe 35 has a support cavity formed therein, and multiple support rods 41 extend into the support cavity. Multiple support cylinders 42, each sleeved on a support rod 41, are rotatably mounted in the support cavity. Each support cylinder 42 has an internal thread, and each support rod 41 has an external thread that mates with the internal thread. A sliding groove extending along the length of the support rod 41 is formed on the support rod 41. A sliding block placed in the sliding groove is fixedly connected to the second arc plate 62. As the support rod 41 moves outward, the sliding block slides in the sliding groove, and the second arc plate 62 does not move with the support rod 41. The sliding block also restricts the rotation of the support rod 41. When the second arc plate 62 moves outward, the sliding block... When the support rod 41 moves inward to the end of the sliding groove, it can drive the sliding block to move and simultaneously drive the second arc plate 62 to retract inward. The driving mechanism 5 includes a drive rod 51 rotatably installed in the support cavity. A first bevel gear 511 is fixedly connected to the drive rod 51. A second bevel gear 421 that meshes with the first bevel gear 511 is fixedly connected to each of the multiple support cylinders 42. When the drive rod 51 is rotated, the drive rod 51 drives the first bevel gear 511 to rotate. The first bevel gear 511 drives the second bevel gear 421 to rotate. The second bevel gear 421 drives the support cylinder 42 to rotate. The support cylinder 42 drives the support rod 41 to move.

[0032] A mounting groove is provided on the end face of the drill rod 35, and a spiral groove is provided on the drive rod 51. A drive plate 52, which is spirally connected to the drive rod 51, is slidably installed in the mounting groove. A slider placed in the spiral groove is fixedly connected to the drive plate 52. When the slider on the drive plate 52 moves, the slider can drive the drive rod 51 to rotate. The spiral angle of the spiral groove on the drive rod 51 is 30°. A baffle 53 is hinged to the drive plate 52. The baffle 53 can contact the workpiece. A limiting member is installed on the drive plate 52 to limit the baffle 53. As the drill rod 35 gradually penetrates into the workpiece, the baffle 53 abuts against the workpiece. The baffle 53 moves relative to the drill rod 35, and the baffle 53 drives the drive plate 52 to move. The drive plate 52 drives the drive rod 51 to rotate (here). When the support rod 41 contacts the inner wall of the deep hole, the limiting member releases the limiting member on the baffle 53, and the baffle 53 flips and enters the deep hole.

[0033] Reference Figures 4 to 6 A torsion spring is sleeved on the hinge shaft installed in the baffle 53. A limit groove is opened on the drive plate 52. The limit component includes a limit spring 54 fixedly connected to the inner wall of the limit groove and a limit block 55 slidably installed in the limit groove. The limit block 55 is fixedly connected to the limit spring 54 and abuts against the baffle 53. An abutment block 56 is fixedly connected to the inner wall of the mounting groove. The end of the limit block 55 away from the limit spring 54 is formed with a limit inclined surface that can contact the abutment block 56. During the movement of the drive plate 52, the drive plate 52 drives the limit block 55 to move. When the abutment block 56 contacts the limit inclined surface, the limit block 55 retracts into the limit groove, so that the limit block 55 separates from the baffle 53, and the baffle 53 can be flipped.

[0034] Reference Figures 1 to 5 A first L-shaped rod 11 is fixedly connected to the workbench 1. A connecting rod 12 is fixedly connected to the first L-shaped rod 11. A second L-shaped rod 13 is fixedly connected to the connecting rod 12. A first magnet is embedded in the second L-shaped rod 13. A first iron block that works with the first magnet is embedded in the baffle 53. When the baffle 53 is pulled out of the deep hole, the torsion spring drives the baffle 53 to flip to a vertical position. The first magnet and the first iron block attract each other. The baffle 53 moves again relative to the drill rod 35, and the support rod 41 can be retracted.

[0035] Reference Figure 5 and Figure 6 Both sides of the drive plate 52 are fixedly connected with sealing plates 521. The opposite ends of the two sealing plates 521 are inserted through the inner wall of the mounting groove, and the side walls of the two sealing plates 521 are in contact with the inner wall of the mounting groove to prevent debris from entering the mounting groove.

[0036] Multiple sets of support mechanisms 4 and telescopic rings 6 are equidistantly arranged along the length of drill rod 35.

[0037] Reference Figures 2 to 8 The scaling mechanism 7 includes a movable rod 71 passing through the support cavity, a first threaded cylinder 72 slidably installed in the support cavity, and a first rotating rod 73 rotatably installed in the support cavity. The first rotating rod 73 has a helical groove with a helix angle of 30°. A slider placed in the helical groove is fixedly connected to the first threaded cylinder 72. The first threaded cylinder 72 is helically connected to the first rotating rod 73. Movement of the first threaded cylinder 72 can drive the first rotating rod 73 to rotate. A third bevel gear 731 is fixedly connected to the first rotating rod 73. Multiple second... Each of the multiple threaded cylinders 74 is threadedly connected to a second screw 75, which is slidably connected to the drill rod 35. The multiple second screws 75 are respectively positioned corresponding to and fixedly connected to the first arc plate 61. Each of the multiple second threaded cylinders 74 is fixedly connected to a fourth bevel gear 741 that meshes with a third bevel gear 731. A first stop 721 is fixedly connected to the first threaded cylinder 72, and a second stop 711 is fixedly connected to the moving rod 71. The first stop 721 contacts the second stop 711. A sliding groove is formed on the drill rod 35, and the moving rod 71... The drill rod 35 is inserted into the sliding groove, and a movable ring 76 is fitted on it. The movable ring 76 is fixedly connected to the movable rod 71 by a fixing block. A second iron block is embedded in the movable ring 76, and a second magnet that works in conjunction with the second iron block is embedded in the first L-shaped rod 11. As the drill rod 35 penetrates deeper into the workpiece, when the workpiece is about to be drilled, the second magnet and the second iron block attract each other, and the movable ring 76 moves relative to the drill rod 35. The movable ring 76 drives the movable rod 71 to move, the movable rod 71 drives the second stop 711 to move, and the second stop 711 pushes the first stop 721 to move. A stop block 721 drives the first threaded cylinder 72 to move, the first threaded cylinder 72 drives the first rotating rod 73 to rotate, the first rotating rod 73 drives the third bevel gear 731 to rotate, the third bevel gear 731 drives the fourth bevel gear 741 to rotate, the fourth bevel gear 741 drives the second threaded cylinder 74 to rotate, the second threaded cylinder 74 drives the second screw 75 to rotate, and the second screw 75 drives the first arc plate 61 to move, thereby expanding the telescopic ring 6. When the support rod 41 retracts, the support rod 41 drives the second arc plate 62 to move, thereby shrinking the telescopic ring 6.

[0038] Reference Figures 2 to 5 The drill rod 35 has an opening for the cleaning ring 81 to be rotatably installed. A rotating shaft 83 extending into the opening is fixedly connected to the drive rod 51. A support rod 84 is fixedly connected to the rotating shaft 83. The support rod 84 is fixedly connected to the cleaning ring 81. During the rotation of the drive rod 51, the drive rod 51 drives the rotating shaft 83 to rotate, the rotating shaft 83 drives the support rod 84 to rotate, and the support rod 84 drives the cleaning ring 81 to rotate.

[0039] The implementation principle of a deep hole machining device for a cutting tool according to an embodiment of the present invention is as follows: When drilling is required on a workpiece, the workpiece is first placed in a fixed cylinder 22 and fixed using a limiting caliper 23. Then, the first motor 32 and the second motor 34 are started, causing the drill rod 35 to drive the cutting blade 36 to drill the workpiece. As the drill rod 35 gradually penetrates deeper into the workpiece, multiple baffles 53 sequentially abut against the workpiece. The baffles 53 move relative to the drill rod 35, and the baffles 53 drive the drive rod 51 to rotate. The drive rod 51 drives multiple support rods 41 to extend outward and contact the inner wall of the deep hole on the workpiece, thereby supporting the drill rod 35. When the abutting block 56 contacts the limiting inclined surface, the limiting block 55 retracts into the limiting groove, the limiting block 55 separates from the baffle 53, the baffle 53 flips over, and enters the deep hole. When the workpiece is about to be drilled, the second magnet attracts the second iron block, and the moving ring 76 moves relative to the drill rod 35. The moving ring 76 drives the first arc plate 61 to move, causing multiple telescopic rings 6 to expand simultaneously and contact the inner wall of the deep hole on the workpiece. When the drill rod 35 drives the telescopic rings 6 to return, the telescopic rings 6 clean the debris remaining on the inner wall of the deep hole. When the baffle 53 is pulled out of the deep hole, the torsion spring drives the baffle 53 to flip to a vertical position, and the first magnet attracts the first iron block. The baffle 53 moves relative to the drill rod 35 again, and the baffle 53 drives the support rod 41 to retract. The support rod 41 drives the second arc plate 62 to move, shrinking the telescopic rings 6. At the same time, the drive rod 51 drives the cleaning ring 81 to rotate, and the cleaning ring 81 drives the cleaning rod 82 to clean the outer circumference of the drill rod 35.

[0040] A method for machining deep holes with a cutting tool includes the following steps: S1. First, place the workpiece in the fixed cylinder 22 and use the limit clamp 23 to fix the workpiece.

[0041] S2. Then start the first motor 32 and the second motor 34, so that the drill rod 35 drives the cutting blade 36 to drill the workpiece.

[0042] S3. As the drill rod 35 gradually penetrates deeper into the workpiece, the baffle 53 comes into contact with the workpiece, and the baffle 53 moves relative to the drill rod 35. The baffle 53 drives multiple support rods 41 to extend outward and contact the inner wall of the deep hole on the workpiece.

[0043] S4. When the support rod 41 contacts the inner wall of the deep hole, the limiting block 55 separates from the baffle 53, the baffle 53 flips over and enters the deep hole.

[0044] S5. After the workpiece is drilled, the telescopic ring 6 expands outward and contacts the inner wall of the deep hole on the workpiece. At the same time, the first motor 32 drives the drill rod 35 to be pulled out of the workpiece. The drill rod 35 drives the telescopic ring 6 to move, and the telescopic ring 6 cleans the debris remaining on the inner wall of the deep hole.

[0045] S6. When the baffle 53 is pulled out of the deep hole, the baffle 53 flips to a vertical position, the first magnet and the first iron block attract each other, and the support rod 41 can be retracted. At the same time, the drive rod 51 drives the cleaning ring 81 to rotate, and the cleaning ring 81 drives the cleaning rod 82 to clean the outer circumference of the drill rod 35.

[0046] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A deep hole machining apparatus for a cutting tool, comprising a worktable (1), a drill rod (35) disposed on the worktable (1), and a support mechanism (4), characterized in that: The support mechanism (4) includes multiple support rods (41) that are slidably mounted on the circumferential surface of the drill rod (35). The multiple support rods (41) are evenly distributed around the axis of the drill rod (35). The multiple support rods (41) can all contact the inner wall of the deep hole on the workpiece. The drill rod (35) is equipped with a drive mechanism (5) for driving the multiple support rods (41) to move synchronously.

2. The deep hole machining apparatus for a cutting tool according to claim 1, characterized in that: The drill rod (35) is fitted with a telescopic ring (6). When the telescopic ring (6) expands outward, the outer circumferential surface of the telescopic ring (6) can contact the inner wall of the deep hole on the workpiece. The drill rod (35) is equipped with a scaling mechanism (7) for driving the telescopic ring (6) to shrink and expand.

3. The deep hole machining apparatus for a cutting tool according to claim 1, characterized in that: A cleaning mechanism (8) is installed on the drill rod (35). The cleaning mechanism (8) includes a cleaning ring (81) slidably installed on the drill rod (35). The axis of the cleaning ring (81) is the same as the axis of the drill rod (35). The cleaning ring (81) can rotate around the axis of the drill rod (35). A cleaning rod (82) that can fit against the outer circumferential surface of the drill rod (35) is fixedly connected to the cleaning ring (81). The cleaning mechanism (8) also includes a connecting piece for driving the cleaning ring (81) to rotate.

4. The deep hole machining apparatus for a cutting tool according to claim 1, characterized in that: The drill rod (35) has a support cavity formed therein, and multiple support rods (41) extend into the support cavity. Multiple support cylinders (42) are rotatably installed in the support cavity and respectively sleeved on the support rods (41). Multiple support cylinders (42) are formed with internal threads, and multiple support rods (41) are formed with external threads that cooperate with the internal threads. The drive mechanism (5) includes a drive rod (51) rotatably installed in the support cavity. A first bevel gear (511) is fixedly connected to the drive rod (51), and a second bevel gear (421) that meshes with the first bevel gear (511) is fixedly connected to each of the multiple support cylinders (42).

5. The deep hole machining apparatus for a cutting tool according to claim 4, characterized in that: The drill rod (35) has an installation groove on its end face, and the drive rod (51) has a spiral groove. A drive plate (52) that is spirally connected to the drive rod (51) is slidably installed in the installation groove. A baffle (53) is hinged to the drive plate (52). The baffle (53) can contact the workpiece. A limiting member for limiting the baffle (53) is installed on the drive plate (52).

6. The deep hole machining apparatus for a cutting tool according to claim 5, characterized in that: A torsion spring is sleeved on the hinge shaft installed in the baffle (53). A limit groove is opened on the drive plate (52). The limit member includes a limit spring (54) fixedly connected to the inner wall of the limit groove and a limit block (55) slidably installed in the limit groove. The limit block (55) is fixedly connected to the limit spring (54) and abuts against the baffle (53). An abutment block (56) is fixedly connected to the inner wall of the mounting groove. The end of the limit block (55) away from the limit spring (54) is formed with a limit slope that can contact the abutment block (56).

7. The deep hole machining apparatus for a cutting tool according to claim 6, characterized in that: A first L-shaped rod (11) is fixedly connected to the workbench (1), a connecting rod (12) is fixedly connected to the first L-shaped rod (11), a second L-shaped rod (13) is fixedly connected to the connecting rod (12), a first magnet is embedded in the second L-shaped rod (13), and a first iron block that works in conjunction with the first magnet is embedded in the baffle (53).

8. The deep hole machining apparatus for a cutting tool according to claim 5, characterized in that: Both sides of the drive plate (52) are fixedly connected with sealing plates (521). The opposite ends of the two sealing plates (521) are both inserted into the inner wall of the mounting groove, and the side walls of the two sealing plates (521) are in contact with the inner wall of the mounting groove.

9. The deep hole machining apparatus for a cutting tool according to claim 2, characterized in that: The support mechanism (4) and the telescopic ring (6) are both arranged in multiple sets at equal intervals along the length of the drill rod (35).

10. A method for deep hole machining with a cutting tool, using the deep hole machining apparatus for a cutting tool according to any one of claims 1-9, characterized in that, Includes the following steps: S1. First, place the workpiece in the fixed cylinder (22) and use the limit clamp (23) to fix the workpiece; S2. Then start the first motor (32) and the second motor (34) so ​​that the drill rod (35) drives the cutting blade (36) to drill the workpiece; S3. As the drill rod (35) gradually penetrates into the workpiece, the baffle (53) comes into contact with the workpiece, the baffle (53) moves relative to the drill rod (35), and the baffle (53) drives multiple support rods (41) to extend outward and contact the inner wall of the deep hole on the workpiece. S4. When the support rod (41) contacts the inner wall of the deep hole, the limiting block (55) separates from the baffle (53), the baffle (53) flips over and enters the deep hole; S5. After the workpiece is drilled, the telescopic ring (6) expands outward and contacts the inner wall of the deep hole on the workpiece. At the same time, the first motor (32) drives the drill rod (35) to be pulled out of the workpiece. The drill rod (35) drives the telescopic ring (6) to move. The telescopic ring (6) cleans the debris remaining on the inner wall of the deep hole. S6. When the baffle (53) is pulled out of the deep hole, the baffle (53) flips to a vertical position, the first magnet and the first iron block attract each other, and the support rod (41) can be retracted. At the same time, the drive rod (51) drives the cleaning ring (81) to rotate, and the cleaning ring (81) drives the cleaning rod (82) to clean the outer circumference of the drill rod (35).

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