A telescopic adjustable T-type milling cutter and its fixing assembly

Abstract

The present invention relates to the technical field of milling cutter processing equipment, and specifically to a telescopic adjustable T-type milling cutter and its fixing assembly, including a main shaft, a threaded column is installed on the bottom wall of the main shaft, a plurality of secondary limit grooves are opened at the bottom of the threaded column, a tool end reinforcement unit for reinforcing the tool handle port is provided at the bottom of the main shaft, and a tool middle reinforcement unit for reinforcing the middle part of the tool handle is provided at the bottom of the tool end reinforcement unit for reinforcing the middle part of the tool handle. The present invention realizes the rotational movement between the inner ring gear plate, the long column gear and the gear rack by setting the torsion between the bolt-type turntable and the threaded column, thereby realizing the purpose of reinforcing tool handle parts of different diameters, and also realizing the installation or disassembly between the threaded column and the bolt-type turntable. Compared with the existing method of clamping the milling cutter rod by an elastic chuck tube, the present invention is more convenient and stable, and the present invention further improves the reinforcement effect of the tool handle part by double pressing the upper section of the tool handle by the arc pressing part and the limit pressing part.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutter processing equipment, in particular to a telescopic adjustable T-type milling cutter and a fixing component thereof. Background Art

[0002] A milling cutter is a rotating tool with one or more teeth used for milling. When working, each tooth cuts off the excess of the workpiece intermittently in sequence. The milling cutter is mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines. The T-type milling cutter needs to be fixed during the processing so that the milling cutter can play a stabilizing role during milling work, thereby improving the processing efficiency of the workpiece.

[0003] The existing milling cutter has the following two problems during use:

[0004] 1. The existing fixation between the milling cutter rod and the spindle is to place the elastic collet tube inside the spindle nut, then insert the milling cutter rod into the elastic collet tube inside the spindle nut, then twist the spindle nut onto the spindle bearing by hand, and then tighten the spindle nut with a wrench so that the elastic collet tube clamps the milling cutter rod, thereby achieving the purpose of fixing the milling cutter rod. However, after the milling cutter rod processes the workpiece, it is necessary to replace the milling cutter rod with different diameters. Therefore, the staff replaces the corresponding elastic collet tube according to the milling cutter rods with different diameters. If the elastic collet tube is not suitable for storage, it is easy to lose, thereby increasing the cost of the elastic collet tube and affecting the processing efficiency.

[0005] 2. When the tool holder is fixed on the spindle, the milling cutter generates a large friction force on the workpiece during processing. Due to the particularity of the milling cutter, the tool rod is designed to be longer. Therefore, the force difference between the tool holder port and the milling cutter mouth is too large, causing the milling cutter mouth and the tool rod to shake. The stability of the milling cutter mouth and the tool rod cannot be ensured, which leads to poor processing quality of the workpiece. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a telescopic adjustable T-type milling cutter and its fixing assembly. The structural design of the telescopic adjustable T-type milling cutter and its fixing assembly can effectively solve the problems of complicated installation of the milling cutter and the large difference in force between the shank port and the milling cutter mouth, resulting in shaking of the milling cutter mouth and the tool rod.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixing assembly of a T-type milling cutter, comprising a spindle, a threaded column is installed on the bottom wall of the spindle, a plurality of secondary limit grooves are opened at the bottom of the threaded column, a tool end reinforcement unit for reinforcing a tool handle port is provided at the bottom of the spindle, and a tool middle reinforcement unit for reinforcing the middle part of the tool handle is provided at the bottom of the tool end reinforcement unit;

[0008] The blade end reinforcement unit comprises a rotating member, the inner ring of the rotating member is provided with a protruding inner ring gear disk, the upper and lower ends of the inner ring gear disk are rotatably connected with a reinforced outer disk, the reinforced outer disk is rotatably connected to the inner ring of the rotating member, the upper and lower ends of the reinforced outer disk are provided with connecting sleeves in an annular array, a reinforced inner disk for penetrating a knife handle is provided on the side of the connecting sleeve away from the reinforced outer disk, a long column gear is rotatably connected between the middle parts of the connecting sleeve through a bearing, a through transverse groove in an annular array is provided between the reinforced inner disk and the reinforced outer disk, a gear rack is slidably provided in the through transverse groove, the gear rack and the long column gear are meshed, an arc-shaped pressing member for pressing the knife handle is installed at one end of the long column gear close to the reinforced inner disk, a driving member for driving the rotating member to rotate is provided on the outer side of the rotating member, a dustproof member is provided at the upper and lower ends of the reinforced outer disk, a limiting threaded rod is provided on the top of the reinforced inner disk, and the limiting threaded rod is penetrated into the inner side of the secondary limiting groove;

[0009] The reinforcement unit in the knife includes a cavity box, and three lifting screws are threadedly connected to the bottom of the cavity box. The inner cavity of the cavity box is used to drive the linkage part of the three lifting screws to move synchronously. A movable disc is arranged between the three lifting screws, and the inner ring of the movable disc is rotatably connected to a sleeve disc.

[0010] Preferably, the driving component comprises a threaded turntable mounted on the outer wall of the rotating member, a bolted turntable is mounted on the top of the threaded turntable, and matching threaded holes are provided in the inner ring of the bolted turntable and the outer ring of the threaded column.

[0011] Preferably, a T-shaped slide rail is installed on the side wall of the through-transverse groove, and a C-shaped slide rail is installed on the side of the gear rack close to the T-shaped slide rail.

[0012] Preferably, a notch is provided on a side of the gear rack away from the reinforced inner disc, a spring telescopic rod is threadedly connected to the notch, and an arc-shaped member is installed on a side of the spring telescopic rod away from the gear rack.

[0013] Preferably, the dust-proof component includes a plurality of first screw rods installed on the top of the reinforced inner disc, a first dust-proof plate is sleeved on the bottom of the first screw rod, the limiting threaded rod is threadedly connected to the top of the first screw rod, a plurality of second screw rods are installed on the bottom of the reinforced inner disc, a second dust-proof plate is sleeved on the outer side of the reinforced inner disc, one end of the second screw rod passes through the outer side of the second dust-proof plate and is threadedly connected to a threaded torsion rod, and a circular groove for passing the knife handle is opened in the middle part of the second dust-proof plate.

[0014] Preferably, the linkage part includes a hollow cylindrical disc installed in the middle of the inner cavity of the cavity box, the bottom wall of the cavity box is rotatably connected to the first outer ring wheel gear disc, and the inner cavity bottom wall of the cavity box corresponding to the side of the lifting screw rod is rotatably connected to a connecting gear, the connecting gear and the first outer ring wheel gear disc are meshed, the top of the lifting screw rod passes through the inner cavity of the cavity box and is fixedly connected to the connecting gear, a linkage groove is provided on the right side of the front end of the cavity box, and an artificial twisting wheel meshing with the second outer ring wheel gear disc is rotatably connected in the linkage groove, and the cavity box is provided with a ratchet unit for controlling the rotation of the artificial twisting wheel below the artificial twisting wheel.

[0015] Preferably, the ratchet unit includes a fixed block installed on one side of the cavity box and located below the ratchet disk side, the top of the fixed block is rotatably connected to a clamping head for clamping the ratchet disk, a return spring is connected between the right end of the clamping head and the cavity box, and a pull rod is installed on the side of the clamping head away from the cavity box.

[0016] A telescopic adjustable T-type milling cutter used in a fixing assembly of a T-type milling cutter comprises a milling cutter column and a tool handle member arranged on the top of the milling cutter column, the outer side of the milling cutter column is detachably connected with a T-type milling cutter member in an annular array by bolts, the tool handle member comprises a lower tool handle mounted on the top of the milling cutter column, a cavity screw rod is mounted on the top of the lower tool handle, an upper tool handle is arranged on the top of the lower tool handle, a threaded groove is provided at the bottom of the upper tool handle for accommodating the cavity screw rod, a solid screw rod is mounted in the threaded groove, and the solid screw rod and the cavity screw rod are threadedly connected.

[0017] Preferably, a fixing groove in a circular array is provided on the top of the upper section of the knife handle, a limiting pressing part adapted to the fixing groove is installed in the middle of a side surface of the arc-shaped pressing part away from the reinforced inner disk, a limiting part is installed on the top of the upper section of the knife handle, and a main limiting groove adapted to the limiting part is provided on the bottom wall of the threaded column.

[0018] Preferably, an arc-shaped connecting piece in a ring array is installed on the top of the lower section of the shank, the inner ring of the sleeve disc is provided with through holes for the arc-shaped connecting piece to pass through, and the inner ring of the sleeve disc is provided with an arc-shaped groove between adjacent through holes for pressing the arc-shaped connecting piece.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The technical solution of the present invention is applied to solve the problems encountered in the prior art when using a telescopic adjustable T-type milling cutter and its fixing assembly. The present invention realizes the rotational movement between the inner ring gear plate, the long column gear and the gear rack by setting the torsion between the bolt-type turntable and the threaded column, thereby achieving the purpose of reinforcing the handle parts of different diameters, and also realizing the installation or disassembly between the threaded column and the bolt-type turntable. Compared with the existing method of clamping the milling cutter rod by an elastic chuck tube, the present invention is more convenient and stable. In addition, the present invention further improves the reinforcement effect of the handle part by double pressing the upper section of the handle through the arc pressing part and the limit pressing part;

[0021] 2. The technical solution of the present invention is applied to solve the problems encountered in the prior art when using a telescopic adjustable T-type milling cutter and its fixing assembly. The present invention sets a reinforcement unit in the cutter to drive the moving disc to move the sleeve disc along the periphery of the handle until the arc groove on the sleeve disc presses the arc connecting piece, thereby pressing the lower section of the handle and limiting it at the same time. Compared with the prior art, the force between the handle port and the milling cutter mouth of the present invention is uniform, and the handle is not easy to shake during use, thereby improving the processing efficiency of the handle.

[0022] 3. By applying the technical solution of the present invention, in order to solve the problems encountered in the prior art when using a telescopic adjustable T-type milling cutter and its fixing assembly, the present invention surrounds the first dustproof plate and the second dustproof plate on the reinforced inner disc through the cooperation between the limiting threaded rod, the first screw rod, the threaded torsion rod and the second screw rod in the dustproof component, thereby playing a dustproof role and facilitating its installation or disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is an exploded view of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the blade end reinforcement unit of the present invention;

[0026] Figure 4 for Figure 3 A partial enlarged view of middle A;

[0027] Figure 5 for Figure 3 A partial enlarged view of B in the middle;

[0028] Figure 6 It is a schematic diagram of a reinforcement unit in a knife of the present invention;

[0029] Figure 7 A top view of a reinforcement unit in a knife of the present invention;

[0030] Figure 8 for Figure 7 A partial enlarged view of middle C;

[0031] Fig. 9 It is an exploded view of the knife handle of the present invention.

[0032] In the figure:

[0033] 1. Milling cutter column; 11. T-type milling cutter piece;

[0034] 2. Tool handle; 20. Fixing groove; 21. Arc-shaped connecting piece; 22. Limiting piece; 201. Upper tool handle; 202. Lower tool handle; 2021. Cavity screw rod; 2022. Threaded groove; 2023. Solid screw rod;

[0035] 3. Main shaft; 31. Threaded column; 32. Main limit groove; 33. Secondary limit groove;

[0036] 4. Knife end reinforcement unit; 41. Rotating member; 42. Inner ring gear plate; 43. Reinforced outer disc; 44. Connecting sleeve; 45. Reinforced inner disc; 46. Long column gear; 47. Gear rack; 470. Through transverse groove; 48. Arc-shaped pressed part; 49. Limit pressed part; 411. T-type slide rail; 412. C-type slide rail; 413. Notch; 414. Spring telescopic rod; 415. Arc-shaped part; 421. Bolt-type turntable; 422. Threaded turntable; 431. First screw rod; 432. First dustproof plate; 433. Limit threaded rod; 434. Second screw rod; 435. Second dustproof plate; 436. Threaded torsion rod;

[0037] 5. Reinforcement unit in the knife; 50. Hollow cylindrical disc; 51. Cavity box; 52. First outer ring gear disc; 53. Connecting gear; 54. Lifting screw; 55. Moving disc; 56. Sleeve disc; 57. Through hole; 58. Arc groove; 511. Second outer ring gear disc; 512. Manual twisting wheel; 5130. Ratchet unit; 513. Ratchet disc; 514. Fixed block; 515. Clamping head; 516. Reset spring; 517. Pull rod. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 9 , the present invention provides a technical solution:

[0040] Embodiment 1: Figure 1-Figure 5 As shown, a fixing assembly of a T-type milling cutter includes a spindle 3, a threaded column 31 is installed on the bottom wall of the spindle 3, a plurality of secondary limit grooves 33 are opened at the bottom of the threaded column 31, a tool end reinforcement unit 4 for reinforcing the tool handle port is provided at the bottom of the spindle 3, and the tool end reinforcement unit 4 includes a rotating member 41, an inner ring of the rotating member 41 is installed with a protruding inner ring gear disk 42, and the upper and lower ends of the inner ring gear disk 42 are rotatably connected with a reinforced outer disc 43, the reinforced outer disc 43 is rotatably connected to the inner ring of the rotating member 41, and the upper and lower ends of the reinforced outer disc 43 are installed with connecting sleeves 44 in a ring array, and the connecting sleeves 44 are away from the reinforced outer disc 43. A reinforced inner disc 45 for penetrating the knife handle is installed on one side, a long column gear 46 is rotatably connected between the middle part of the connecting sleeve 44 through a bearing, a through transverse groove 470 in a ring array is opened between the reinforced inner disc 45 and the reinforced outer disc 43, a gear rack 47 is slidably arranged in the through transverse groove 470, the gear rack 47 is meshed with the long column gear 46, an arc-shaped pressing member 48 for pressing the knife handle is installed at one end of the long column gear 46 close to the reinforced inner disc 45, a driving component for driving the rotating member 41 to rotate is arranged on the outer side of the rotating member 41, a limiting threaded rod 433 is arranged on the top of the reinforced inner disc 45, and the limiting threaded rod 433 The driving component is arranged inside the secondary limit groove 33, and includes a threaded turntable 422 installed on the outer wall of the rotating member 41. A bolt-type turntable 421 is installed on the top of the threaded turntable 422. The inner ring of the bolt-type turntable 421 and the outer ring of the threaded column 31 are provided with matching threaded holes. A T-shaped slide rail 411 is installed on the side wall of the transverse groove 470. A C-shaped slide rail 412 is installed on the side of the gear rack 47 close to the T-shaped slide rail 411. A notch 413 is opened on the side of the gear rack 47 away from the reinforced inner disc 45. A spring telescopic rod 414 is connected to the inner thread of the notch 413. An arc is installed on the side of the spring telescopic rod 414 away from the gear rack 47. Shaped part 415, dustproof components are provided at the upper and lower ends of the reinforced outer disk 43, the dustproof components include a plurality of first screw rods 431 installed on the top of the reinforced inner disk 45, a first dustproof plate 432 is sleeved on the bottom of the first screw rod 431, a limiting threaded rod 433 is threadedly connected to the top of the first screw rod 431, a plurality of second screw rods 434 are installed on the bottom of the reinforced inner disk 45, a second dustproof plate 435 is sleeved on the outer side of the reinforced inner disk 45, one end of the second screw rod 434 passes through the outer side of the second dustproof plate 435 and is threadedly connected with a threaded torsion rod 436, and a circular groove for passing the knife handle is opened in the middle of the second dustproof plate 435.

[0041] During operation, when the tool handle member 2 passes through the interior of the reinforced inner disc 45, the staff member twists the threaded turntable 422 by hand to drive the bolt-type turntable 421 to rotate, so that the bolt-type turntable 421 is rotated and tightened outside the threaded column 31. In order to make the bolt-type turntable 421 and the threaded column 31 fully stable, a wrench can be used to twist the bolt-type turntable 421. When the bolt-type turntable 421 is twisted, it drives the connected rotating member 41 and the inner ring gear plate 42 to rotate. At the same time, the inner ring gear plate 42 drives the long column gear 46 to rotate. Then the long column gear 46 drives the gear racks 47 at the upper and lower ends to rotate, so that the four gear racks 47 can realize telescopic movement in the through-transverse groove 470, and then the outer periphery of the tool handle member 2 is pressed by the arc-shaped pressing member 48 in the reinforced inner disc 45, thereby achieving the purpose of reinforcing tool handle members 2 of different diameters.

[0042] During operation, when the parts inside the blade end reinforcement unit 4 are damaged, the inner ring of the reinforced inner disc 45 can be repaired by unscrewing the limiting threaded rod 433 on the first threaded rod 431 and unscrewing the threaded torsion rod 436 on the threaded torsion rod 436. At the same time, through the cooperation between the limiting threaded rod 433, the first threaded rod 431, the threaded torsion rod 436 and the second threaded rod 434, the first dustproof plate 432 and the second dustproof plate 435 are surrounded on the reinforced inner disc 45, thereby playing a dustproof role and facilitating its installation or disassembly.

[0043] It is worth noting that the present invention realizes the rotational movement between the inner ring gear plate 42, the long column gear 46, and the gear rack 47 by setting the torsion between the bolt-type turntable 421 and the threaded column 31, thereby achieving the purpose of reinforcing the tool handle parts 2 of different diameters, and also realizes the installation or disassembly between the threaded column 31 and the bolt-type turntable 421. Compared with the existing method of clamping the milling cutter rod by an elastic chuck tube, the present invention is more convenient and stable.

[0044] It is worth noting that the present invention sets a T-shaped slide rail 411 and a C-shaped slide rail 412, so that the gear rack 47 can maintain limited movement in the through-transverse groove 470, and at the same time improves the close engagement between the gear teeth in the gear rack 47 and the long column gear 46 to prevent the gear rack 47 from shaking left and right, thereby improving the movement stability of the gear rack 47.

[0045] It is worth noting that the present invention sets the spring in the spring telescopic rod 414 as a compression spring, and the cross-sectional area of ​​the arc-shaped member 415 is larger than the area of ​​the groove body passing through the transverse groove 470, which is beneficial to prevent the gear rack 47 from excessive movement. Through the cooperation between the spring telescopic rod 414 and the arc-shaped member 415, the gear rack 47 can return to its original position quickly, and the threaded connection between the spring telescopic rod 414 and the gear rack 47 can disassemble the gear rack 47.

[0046] Embodiment 2:

[0047] The technical solution is basically the same as that of the first embodiment, except that Figure 2 and Fig. 9 As shown, a telescopic adjustable T-type milling cutter used in a fixing assembly of a T-type milling cutter comprises a milling cutter column 1 and a handle member 2 arranged on the top of the milling cutter column 1. The outer side of the milling cutter column 1 is detachably connected with a T-type milling cutter member 11 in a ring array by bolts. The handle member 2 comprises a lower section handle 202 installed on the top of the milling cutter column 1, a cavity screw rod 2021 is installed on the top of the lower section handle 202, an upper section handle 201 is arranged on the top of the lower section handle 202, and a hole is provided at the bottom of the upper section handle 201 for facilitating the cavity screw rod 2021 to move. A threaded groove 2022 is accommodated, and a solid screw rod 2023 is installed in the threaded groove 2022. The solid screw rod 2023 and the cavity screw rod 2021 are threadedly connected. A fixing groove 20 in a ring array is opened on the top of the upper section of the shank 201. A limiting pressing part 49 matched with the fixing groove 20 is installed in the middle of the side of the arc-shaped pressing part 48 away from the reinforced inner disk 45. A limiting part 22 is installed on the top of the upper section of the shank 201, and a main limiting groove 32 matched with the limiting part 22 is opened on the bottom wall of the threaded column 31.

[0048] The staff inserts the cavity screw 2021 on the lower section handle 202 into the threaded groove 2022 for rotational movement, thereby realizing the telescopic movement between the upper section handle 201 and the lower section handle 202, which is also helpful to prevent external dust from entering the outer wall of the solid screw 2023 and the inner wall of the cavity screw 2021.

[0049] First, when the staff inserts the handle member 2, the limiting member 22 on the top of the handle member 2 is inserted into the main limiting groove 32 on the threaded column 31, so that the fixed groove 20 on the handle member 2 and the limiting pressing member 49 are aligned, and then when the arc-shaped pressing member 48 moves close to the handle member 2, the limiting pressing member 49 is directly pressed in the fixed groove 20 on the handle member 2, thereby further improving the reinforcement effect of the handle member 2.

[0050] Embodiment three:

[0051] The technical solution is basically the same as that of the first embodiment, except that Figure 6-Figure 8As shown, a mid-knife reinforcement unit 5 for reinforcing the middle part of the knife handle is provided at the bottom of the knife end reinforcement unit 4, and the mid-knife reinforcement unit 5 includes a cavity box 51, and three lifting screws 54 are threadedly connected to the bottom of the cavity box 51. The inner cavity of the cavity box 51 is used to drive the linkage part of the three lifting screws 54 to move synchronously. A moving disc 55 is provided between the three lifting screws 54, and the inner ring of the moving disc 55 is rotatably connected to a sleeve disc 56. The linkage part includes a hollow cylindrical disc 50 installed in the middle of the inner cavity of the cavity box 51, and the bottom wall of the cavity box 51 is rotatably connected to a first outer ring gear disc 52. The bottom wall of the inner cavity of the cavity box 51 is rotatably connected to one side of the lifting screw 54, and the connecting gear 53 is meshed with the first outer ring gear disc 52. The top end of the lifting screw 54 passes through the inner cavity of the cavity box 51 and is fixedly connected to the connecting gear 53. A linkage groove is provided on the right side of the front end of the cavity box 51. The manual twisting wheel 512 meshing with the second outer ring gear disc 511 is rotatably connected, the top of the lower section of the knife handle 202 is equipped with an arc-shaped connecting member 21 in a ring array, the inner ring of the sleeve disc 56 is provided with a through hole 57 for the arc-shaped connecting member 21 to pass through, and the inner ring of the sleeve disc 56 is provided with an arc groove 58 for pressing the arc-shaped connecting member 21 between adjacent through holes 57. The cavity box 51 is located below the manual twisting wheel 512 and is provided with a useful The ratchet unit 5130 is used to control the rotation of the manual twisting wheel 512. The ratchet unit 5130 includes a fixed block 514 installed on one side of the cavity box 51 and located below the ratchet disc 513. The top of the fixed block 514 is rotatably connected to a clamping head 515 for clamping the ratchet disc 513. A return spring 516 is connected between the right end of the clamping head 515 and the cavity box 51. A pull rod 517 is installed on the side of the clamping head 515 away from the cavity box 51.

[0052] During operation, when the tool handle is fixed on the main shaft 3 so that the tool rod is designed to be longer, the staff twists the manual twisting wheel 512 to rotate, and the manual twisting wheel 512 drives the hollow cylinder disc 50 and the first outer ring gear disc 52 to rotate synchronously, and then the first outer ring gear disc 52 drives the three connecting gears 53 to rotate synchronously, so as to realize the synchronous direction rotation of the lifting screw rod 54, and then realize the lifting and lowering movement of the moving disc 55 on the lifting screw rod 54. According to the length of the tool rod, the moving disc 55 is moved to the middle part of the tool rod, and then the sleeve disc 56 is rotated so that the through hole 57 is in the arc-shaped connecting piece 21 on the lower section tool handle 202. Pass through, and then rotate the sleeve disc 56 to move the arc-shaped connecting member 21 to the inside of the arc-shaped groove 58, and then manually twist the wheel 512 to rotate the second outer ring gear disc 511 and the first outer ring gear disc 52 again, so that the movable disc 55 moves upward until the arc-shaped connecting member 21 is tightly attached to the arc-shaped groove 58, so as to reinforce the middle position of the tool handle 2 and limit the tool handle 2. Compared with the prior art, the force between the tool handle port and the milling cutter mouth of the present invention is uniform, and the tool handle is not easy to shake during use, thereby improving the processing efficiency of the tool handle 2.

[0053] When the manual twisting wheel 512 rotates, the clamping head 515 can press the ratchet disk 513 at any time with the cooperation of the reset spring 516 to prevent the manual twisting wheel 512 from rotating slightly. At the same time, the pull rod 517 can also be pulled to drive the clamping head 515 out of the ratchet disk 513, and then the manual twisting wheel 512 can be quickly twisted to rotate, thereby improving the convenience of quick locking of the manual twisting wheel 512.

[0054] Working principle: When used for telescopic adjustable T-type milling cutter and its fixing components:

[0055] First, when the staff inserts the tool handle 2, the staff inserts the limiting piece 22 on the top of the tool handle 2 into the main limiting groove 32 on the threaded column 31, so that the fixing groove 20 on the tool handle 2 is aligned with the limiting pressing piece 49. The staff twists the threaded turntable 422 by hand to drive the bolt-type turntable 421 to rotate, so that the bolt-type turntable 421 is rotated and tightened outside the threaded column 31. In order to make the bolt-type turntable 421 and the threaded column 31 fully stable, a wrench can be used to twist on the bolt-type turntable 421. When the bolt-type turntable 421 is twisted During the process, the connected rotating member 41 and the inner ring gear plate 42 are driven to rotate, and at the same time, the inner ring gear plate 42 drives the long column gear 46 to rotate, and then the long column gear 46 drives the gear racks 47 at the upper and lower ends to rotate, so that the four gear racks 47 can realize telescopic movement in the through transverse groove 470, and then the arc-shaped pressing member 48 in the reinforced inner disc 45 is used to press the periphery of the handle member 2, and then when the arc-shaped pressing member 48 moves close to the handle member 2, the limiting pressing member 49 is directly pressed in the fixed groove 20 on the handle member 2;

[0056] Second, when the parts inside the blade end reinforcement unit 4 are damaged, the inner ring of the reinforced inner disc 45 can be repaired by unscrewing the limiting threaded rod 433 on the first screw rod 431 and unscrewing the threaded torsion rod 436 on the threaded torsion rod 434. At the same time, the first dustproof plate 432 and the second dustproof plate 435 are surrounded on the reinforced inner disc 45 by the cooperation between the limiting threaded rod 433, the first screw rod 431, the threaded torsion rod 436 and the second screw rod 434, thereby playing a dustproof role;

[0057] Third, when the handle is fixed on the spindle 3 so that the design length of the tool rod is longer, the staff twists the manual twisting wheel 512 to rotate, and the manual twisting wheel 512 drives the hollow cylinder disc 50 and the first outer ring gear disc 52 to rotate synchronously, and then the first outer ring gear disc 52 drives the three connecting gears 53 to rotate synchronously, so as to realize the synchronous direction rotation of the lifting screw rod 54, and then realize the lifting and lowering movement of the movable disc 55 on the lifting screw rod 54, and according to the length of the tool rod, the movable disc 55 is moved to the middle of the tool rod. The sleeve disc 56 is then rotated to allow the through hole 57 to pass through the arc-shaped connecting piece 21 on the lower section of the tool handle 202, and then the sleeve disc 56 is rotated again to move the arc-shaped connecting piece 21 to the inside of the arc-shaped groove 58, and then the second outer ring gear disc 511 and the first outer ring gear disc 52 are rotated again by manually twisting the wheel 512 to move the moving disc 55 upward until the arc-shaped connecting piece 21 is tightly attached to the arc-shaped groove 58, so as to play a reinforcing role in the middle position of the tool handle 2.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0059] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic adjustable T-type milling cutter, characterized in that: A fixing assembly including a T-type milling cutter; The fixing assembly of the T-type milling cutter comprises a main shaft (3), a threaded column (31) is installed on the bottom wall of the main shaft (3), a plurality of secondary limit grooves (33) are provided at the bottom of the threaded column (31), a tool end reinforcement unit (4) for reinforcing the tool handle port is provided at the bottom of the main shaft (3), and a tool middle reinforcement unit (5) for reinforcing the middle part of the tool handle is provided at the bottom of the tool end reinforcement unit (4); The blade end reinforcement unit (4) comprises a rotating member (41), the inner ring of the rotating member (41) is provided with a protruding inner ring gear disc (42), the upper and lower ends of the inner ring gear disc (42) are rotatably connected to a reinforced outer disc (43), the reinforced outer disc (43) is rotatably connected to the inner ring of the rotating member (41), the upper and lower ends of the reinforced outer disc (43) are provided with connecting sleeves (44) in an annular array, the side of the connecting sleeve (44) away from the reinforced outer disc (43) is provided with a reinforced inner disc (45) for penetrating the knife handle, the middle part of the connecting sleeve (44) is rotatably connected to a long column gear (46) via a bearing, the reinforced inner disc (45) and the reinforced outer disc (43) are connected to each other in a circular manner, and the inner disc (45) and the reinforced outer disc (43) are connected to each other in a circular manner. A through transverse groove (470) in an annular array is provided between the disks (43), a gear rack (47) is slidably provided in the through transverse groove (470), the gear rack (47) is meshed with the long column gear (46), an arc-shaped pressing member (48) for pressing the knife handle is installed at one end of the gear rack (47) close to the reinforced inner disk (45), a driving member for driving the rotating member (41) to rotate is provided on the outer side of the rotating member (41), dustproof members are provided at the upper and lower ends of the reinforced outer disk (43), a limiting threaded rod (433) is provided on the top of the reinforced inner disk (45), and the limiting threaded rod (433) is penetrated through the inner side of the secondary limiting groove (33); The knife reinforcement unit (5) comprises a cavity box (51), the bottom of the cavity box (51) is threadedly connected to three lifting screws (54), the inner cavity of the cavity box (51) is provided with a linkage part for driving the three lifting screws (54) to move synchronously, a moving disc (55) is provided between the three lifting screws (54), and the inner ring of the moving disc (55) is rotatably connected to a sleeve disc (56); The driving component comprises a threaded turntable (422) mounted on the outer wall of the rotating member (41), a bolted turntable (421) being mounted on the top of the threaded turntable (422), and matching threaded holes are provided on the inner ring of the bolted turntable (421) and the outer ring of the threaded column (31); The T-shaped milling cutter comprises a milling cutter column (1) and a tool handle member (2) arranged at the top of the milling cutter column (1); the outer side of the milling cutter column (1) is detachably connected to a T-shaped milling cutter member (11) in an annular array via bolts; the tool handle member (2) comprises a lower tool handle (202) installed at the top of the milling cutter column (1); a cavity screw rod (2021) is installed at the top of the lower tool handle (202); an upper tool handle (201) is arranged at the top of the lower tool handle (202); a threaded groove (2022) is provided at the bottom of the upper tool handle (201) for accommodating the cavity screw rod (2021); a solid screw rod (2023) is installed in the threaded groove (222); and the solid screw rod (2023) and the cavity screw rod (2021) are threadedly connected; The top of the upper section of the knife handle (201) is provided with fixing grooves (20) in an annular array, a limiting pressing piece (49) adapted to the fixing grooves (20) is installed in the middle of a side surface of the arc-shaped pressing piece (48) away from the reinforcing inner disc (45), a limiting piece (22) is installed on the top of the upper section of the knife handle (201), and a main limiting groove (32) adapted to the limiting piece (22) is provided on the bottom wall of the threaded column (31); The top of the lower section of the shank (202) is provided with arc-shaped connecting members (21) in a ring array, the inner ring of the sleeve disc (56) is provided with through holes (57) for the arc-shaped connecting members (21) to pass through, and the inner ring of the sleeve disc (56) is provided with arc-shaped grooves (58) located between adjacent through holes (57) for pressing the arc-shaped connecting members (21).

2. The telescopic adjustable T-type milling cutter according to claim 1, characterized in that: A T-shaped slide rail (411) is installed on the side wall of the through-transverse groove (470), and a C-shaped slide rail (412) is installed on the side of the gear rack (47) close to the T-shaped slide rail (411).

3. The telescopic adjustable T-type milling cutter according to claim 2, characterized in that: A notch (413) is provided on a side of the gear rack (47) away from the reinforcing inner disc (45); a spring telescopic rod (414) is internally threadedly connected to the notch (413); and an arc-shaped member (415) is installed on a side of the spring telescopic rod (414) away from the gear rack (47).

4. The telescopic adjustable T-type milling cutter according to claim 1, characterized in that: The dustproof component comprises a plurality of first screw rods (431) mounted on the top of the reinforced inner disc (45); a first dustproof plate (432) is sleeved on the bottom of the first screw rods (431); the limiting threaded rod (433) is threadedly connected to the top of the first screw rod (431); a plurality of second screw rods (434) are mounted on the bottom of the reinforced inner disc (45); a second dustproof plate (435) is sleeved on the outer side of the reinforced inner disc (45); one end of the second screw rod (434) passes through the outer side of the second dustproof plate (435) and is threadedly connected to a threaded torsion rod (436); and a circular notch for passing a knife handle is opened in the middle of the second dustproof plate (435).

5. The telescopic adjustable T-type milling cutter according to claim 1, characterized in that: The linkage part comprises a hollow cylindrical disc (50) mounted in the middle of the inner cavity of the cavity box (51), a second outer ring gear disc (511) being mounted on the hollow cylindrical disc (50), a first outer ring gear disc (52) being rotatably connected to the bottom wall of the cavity box (51), a connecting gear (53) being rotatably connected to a side of the inner cavity bottom wall of the cavity box (51) corresponding to the lifting screw rod (54), the connecting gear (53) being meshed with the first outer ring gear disc (52), the top end of the lifting screw rod (54) passing through the inner cavity of the cavity box (51) and being fixedly connected to the connecting gear (53), a linkage groove being provided on the right side of the front end of the cavity box (51), an artificial twisting wheel (512) being rotatably connected to the second outer ring gear disc (511), and a ratchet unit (5130) for controlling the rotation of the artificial twisting wheel (512) being provided below the artificial twisting wheel (512) in the cavity box (51).

6. The telescopic adjustable T-type milling cutter according to claim 5, characterized in that: The ratchet unit (5130) includes a fixed block (514) installed on one side of the cavity box (51) and located below the ratchet disc (513); the top of the fixed block (514) is rotatably connected to a clamping head (515) for clamping the ratchet disc (513); a return spring (516) is connected between the right end of the clamping head (515) and the cavity box (51); and a pull rod (517) is installed on the side of the clamping head (515) away from the cavity box (51).

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