CN115709304A - Telescopic adjusting type T-shaped milling cutter and fixing assembly thereof - Google Patents

Abstract

The invention relates to the technical field of milling cutter processing equipment, in particular to a telescopic adjustable T-shaped milling cutter and its fixing assembly, including a main shaft, the bottom wall of the main shaft is equipped with a threaded column, and the bottom of the threaded column is provided with a plurality of secondary limit slots , the bottom of the main shaft is provided with a knife end reinforcing unit for reinforcing the port of the knife handle, and the bottom of the knife end reinforcing unit is provided with a mid-knife reinforcing unit for reinforcing the middle part of the knife handle. The twisting between the columns realizes the rotational movement between the inner ring gear, the long column gear, and the rack, and then realizes the purpose of reinforcing the tool holders with different diameters, and also realizes the connection between the threaded column and the bolt-type turntable. Compared with the existing method of clamping the milling cutter rod through the collet cylinder, the present invention is more convenient and stable, and the present invention uses the arc-shaped pressing part and the limit pressing part to clamp the upper section Double pressing on the handle further improves the reinforcement effect on the handle.

Description

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

technical field

The invention relates to the technical field of milling cutter processing equipment, in particular to a telescopic adjustable T-shaped milling cutter and its fixing assembly.

Background technique

A milling cutter is a rotating tool with one or more teeth for milling. When working, each tooth cuts off the allowance of the workpiece intermittently. The milling cutter is mainly used for machining planes, steps, and grooves on milling machines. , forming the surface and cutting off the workpiece, etc., the T-shaped milling cutter needs to be fixed during the processing, so that the milling cutter can play a stable role in the milling work, thereby improving the processing efficiency of the workpiece.

There are following two difficult problems in existing milling cutter in use:

1. The existing milling cutter rod and the main shaft are fixed by placing the collet tube inside the spindle nut, then inserting the milling cutter rod into the collet tube inside the spindle nut, and then twisting the spindle nut to the main shaft by hand On the bearing, then a wrench is needed to tighten the spindle nut, so that the collet cylinder can clamp the milling cutter rod, so as to achieve the purpose of fixing the milling cutter rod, but after the milling cutter rod is processed on the workpiece, it needs to be replaced with different diameters. Therefore, the staff replaces the corresponding collet barrel according to the different diameters of the milling cutter bar. If it is not suitable for storing the collet barrel, it is easy to lose it, which increases the cost of the collet barrel and affects the processing efficiency;

2. When the tool handle is fixed on the spindle, the milling cutter will generate a large friction force on the workpiece during processing. Due to the particularity of the milling cutter, the design length of the tool holder is longer, so the gap between the tool handle port and the milling cutter mouth The difference in the force received is too large, resulting in the vibration of the milling cutter mouth and the tool holder, which cannot ensure the stability of the milling cutter mouth and the cutter holder, resulting in poor processing quality of the workpiece.

Contents of the invention

In view of this, the object of the present invention is to provide a telescopic adjustable T-shaped milling cutter and its fixed assembly, the structural design of which can effectively solve the complex and complex installation of the milling cutter. The difference in force between the shank port and the milling cutter mouth is too large, resulting in the vibration of the milling cutter mouth and the tool holder.

In order to achieve the above object, the present invention provides the following technical solution: a fixed assembly of a T-shaped milling cutter, including a main shaft, a threaded post is installed on the bottom wall of the main shaft, and a plurality of secondary limit slots are opened on the bottom of the threaded post , the bottom of the main shaft is provided with a knife end reinforcement unit for reinforcing the handle port, and the bottom of the knife end reinforcement unit is provided with a middle knife reinforcement unit for reinforcing the middle part of the knife handle;

The knife end reinforcement unit includes a rotating part, the inner ring of the rotating part is installed with a protruding inner ring gear disc, and the upper and lower ends of the inner ring gear disc are rotatably connected with a reinforced outer disc, and the reinforcement The outer disk is rotatably connected to the inner ring of the rotating part, and the upper and lower ends of the reinforced outer disk are equipped with connecting sleeves in a circular array, and the side of the connecting sleeve away from the reinforced outer disk is installed with a reinforcement for penetrating the knife handle. The inner disk, the middle part of the connecting sleeve is connected to the long column gear through the bearing rotation, and the reinforced inner disk and the reinforced outer disk are provided with a circular array of penetrating transverse grooves, and the penetrating transverse grooves A rack is slidingly arranged, and the rack is meshed with the long column gear. The end of the long column gear close to the reinforced inner disc is installed with an arc-shaped pressing part for pressing the knife handle. The outer side of the rotating part is set There is a driving part for driving the rotation of the rotating part. The upper and lower ends of the reinforced outer disk are provided with dust-proof parts. Inside the limit slot;

The reinforcement unit in the knife includes a cavity box, and the bottom of the cavity box is threadedly connected with three lifting screw rods, and the inner cavity of the cavity box is used to drive the linkage part of the synchronous movement of the three lifting screw rods. A moving disc is arranged between the lifting screw rods, and a sleeve disc is rotatably connected to the inner ring of the moving disc.

Preferably, the driving part includes a threaded turntable mounted on the outer wall of the rotating member, a bolt-type turntable is installed on the top of the thread-type turntable, and the inner ring of the bolt-type turntable and the outer ring of the threaded column are provided with matching Threaded hole.

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

Preferably, a notch is formed on the side of the rack far away from the reinforced inner disk, and a spring telescopic rod is connected to the inner thread of the notch, and an arc is installed on the side of the spring telescopic rod far away from the rack.

Preferably, the dust-proof component includes a plurality of first threaded rods installed on the top of the reinforced inner disk, the bottom of the first threaded rods is covered with a first dust-proof plate, and the limiting threaded rod is positioned at the first A plurality of second screw mandrels are installed on the top of the screw mandrel to be threadedly connected to the bottom of the reinforced inner disk. The outer side of the second dust-proof plate is provided with a threaded torsion rod, and the middle part of the second dust-proof plate is provided with a circular notch for piercing the knife handle.

Preferably, the linkage part includes a hollow disc installed in the middle of the inner cavity of the cavity box, the bottom wall of the cavity box is rotatably connected with the first outer ring gear plate, and the bottom wall of the cavity box is The side of the wall corresponding to the lifting screw is connected with a connecting gear, and the connecting gear is meshed with the first outer ring gear plate. There is a linkage groove on the right side of the front end of the cavity box, and the artificial twisting wheel meshed with the second outer ring wheel toothed plate is rotatably connected in the linkage groove, and the cavity box is located below the artificial twisting wheel. There is a ratchet unit for controlling the rotation of the manual twist wheel.

Preferably, the ratchet unit includes a fixed block installed on one side of the cavity box and below the side of the ratchet disc, the top of the fixed block is rotatably connected with a clamping head for clamping the ratchet disc, and the clamping head A return spring is connected between the right end and the cavity box, and a pull rod is installed on the side of the clamping head away from the cavity box.

A telescopic adjustable T-shaped milling cutter used in a fixed assembly of a T-shaped milling cutter, comprising a milling cutter column and a tool handle set on the top of the milling cutter column, the outer side of the milling cutter column is detachably connected with a T-shaped milling cutter parts in an annular array, the tool handle includes a lower segment tool handle installed on the top of the milling cutter column, a hollow screw rod is installed on the top of the lower segment tool handle, and an upper segment is provided on the top of the lower segment tool handle A knife handle, the bottom of the upper section of the knife handle is provided with a threaded groove to facilitate the storage of the cavity screw rod. A solid screw rod is installed in the threaded groove, and the solid screw rod and the cavity screw rod are threaded.

Preferably, the top of the upper shank is provided with fixing grooves in an annular array, and the middle part of a side of the arc-shaped pressing part away from the reinforced inner disk is installed with a limiting pressing part matched with the fixing grooves. A limiting member is installed on the top of the upper knife handle, and the bottom wall of the threaded column is provided with a main limiting groove matching the limiting member.

Preferably, the top of the lower shank is equipped with arc-shaped connectors in a circular array, and the inner ring of the sleeve disc is provided with through holes for the arc-shaped connectors to pass through. The inner ring is located between the adjacent through-holes and is used for pressing arc-shaped connectors.

Compared with prior art, the beneficial effect of the present invention is:

1. Applying the technical solution of the present invention, aiming at the problems encountered in the prior art when using the telescopic adjustable T-shaped milling cutter and its fixing components, the present invention realizes internal The rotary motion between the ring wheel tooth plate, the long column gear and the wheel rack can realize the purpose of reinforcing the handle parts of different diameters, and at the same time realize the installation or disassembly between the threaded column and the bolt type turntable. Compared with Compared with the existing method of clamping the milling cutter rod through the collet cylinder, the present invention is more convenient and stable, and the present invention double-presses the upper shank through the arc-shaped pressing part and the limit pressing part, further improving the Reinforcement effect on the tool handle;

2. Applying the technical solution of the present invention, aiming at the problems encountered in the use of the telescopic adjustable T-shaped milling cutter and its fixed components in the prior art, the present invention drives the moving disc to the sleeve disc by setting the reinforcing unit in the cutter Move along the periphery of the tool handle until the arc-shaped groove on the sleeve disc presses the arc-shaped connecting piece, thereby suppressing the lower segment of the tool handle and limiting it at the same time. Compared with the prior art , the force between the end of the handle and the mouth of the milling cutter of the present invention is uniform, the handle is not easy to shake during use, and the processing efficiency of the handle is improved;

3. Applying the technical solution of the present invention, aiming at the problems encountered in the prior art when using the telescopic adjustable T-shaped milling cutter and its fixing assembly, the present invention uses the limit threaded rod and the first screw rod in the dust-proof component to 1. Under the cooperation between the threaded torsion rod and the second screw rod, the first dust-proof plate and the second dust-proof plate are surrounded on the reinforced inner disc, thereby playing a dust-proof role and facilitating its installation or disassembly.

Description of drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

Fig. 2 is an exploded view of the overall structure of the present invention;

Fig. 3 is a schematic view of the knife end reinforcing unit of the present invention;

Fig. 4 is a partially enlarged view of A in Fig. 3;

Fig. 5 is a partially enlarged view of B in Fig. 3;

Fig. 6 is a schematic view of the reinforcement unit in the knife of the present invention;

Fig. 7 is a top view of the reinforcement unit in the knife of the present invention;

Fig. 8 is a partially enlarged view of C in Fig. 7;

Fig. 9 is an exploded view of the knife handle of the present invention.

In the picture:

1. Milling cutter column; 11. T-shaped milling cutter;

2. Knife handle; 20. Fixing groove; 21. Arc connector; 22. Limiting piece; 201. Upper section of knife handle; 202. Lower section of knife handle; 2021. Cavity screw rod; , solid screw;

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

4. Knife end reinforcement unit; 41. Rotating parts; 42. Inner ring wheel sprocket; 43. Reinforced outer disc; 44. Connecting sleeve; 45. Reinforced inner disc; 46. Long column gear; 47. Wheel rack ; 470, through the transverse groove; 48, arc pressed parts; 49, limit pressed parts; 411, T-shaped slide rail; 412, C-shaped slide rail; 413, notch; 421, bolt-type turntable; 422, thread-type turntable; 431, first screw; 432, first dust-proof plate; 433, limit threaded rod; 434, second screw; 435, second dust-proof plate ; 436, threaded torsion rod;

5. Reinforcement unit in the knife; 50. Empty cylinder disc; 51. Cavity box; 52. First outer ring wheel tooth disc; 53. Connecting gear; 54. Lifting screw; 55. Moving disc; 56. Set cylinder disc; 57, through hole; 58, arc groove; 511, second outer ring wheel tooth plate; 512, artificial twisting wheel; 5130, ratchet unit; 513, ratchet disc; 514, fixed block; Holding head; 516, back-moving spring; 517, pull bar.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1 to Fig. 9, the present invention provides a technical solution:

Embodiment 1: As shown in Figures 1-5, a fixed assembly of a T-shaped milling cutter includes a main shaft 3, a threaded post 31 is installed on the bottom wall of the main shaft 3, and a plurality of secondary limit positions are provided at the bottom of the threaded post 31 Groove 33, the bottom of the main shaft 3 is provided with a knife end reinforcement unit 4 for reinforcing the handle port, the knife end reinforcement unit 4 includes a rotating part 41, and the inner ring of the rotating part 41 is equipped with a protruding inner ring wheel tooth plate 42 , the upper and lower ends of the inner ring wheel sprocket 42 are rotatably connected with a reinforced outer disc 43, and the reinforced outer disc 43 is rotatably connected at the inner ring of the rotating part 41, and the upper and lower ends of the reinforced outer disc 43 are equipped with connections in an annular array. Sleeve 44, the side of connecting sleeve 44 away from the reinforced outer disc 43 is equipped with a reinforced inner disc 45 for penetrating the knife handle, and the middle part of the connecting sleeve 44 is connected with a long column gear 46 through bearing rotation, and the reinforced inner disc 45 Between the reinforced outer disk 43, there are annular arrays of penetrating transverse grooves 470, in which the penetrating transverse grooves 470 are slidably provided with wheel racks 47, and the wheel racks 47 are meshed with the long column gears 46, and the long column gears 46 are close to the reinforcement. One end of the inner disc 45 is equipped with an arc pressing part 48 for pressing the knife handle, the outer side of the rotating part 41 is provided with a driving part for driving the rotating part 41 to rotate, and the top of the reinforcing inner disc 45 is provided with a limiting threaded rod 433, The limit threaded rod 433 is installed inside the secondary limit groove 33, and the driving part 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 thread-type turntable 422. The inner ring of the bolt-type turntable 421 and The outer ring of the threaded column 31 is provided with a matching threaded hole, and a T-shaped slide rail 411 is installed through the side wall of the transverse groove 470, and a C-shaped slide rail is installed on the side of the wheel rack 47 near the T-shaped slide rail 411. 412, the rack 47 is provided with a notch 413 away from the side of the reinforced inner disk 45, the notch 413 is internally threaded with a spring telescopic rod 414, and the spring telescopic rod 414 is equipped with an arc part away from the side of the rack 47 415, the upper and lower ends of the reinforced outer disc 43 are provided with dust-proof parts, the dust-proof parts include a plurality of first screw rods 431 installed on the top of the reinforced inner disc 45, and the bottom of the first screw rods 431 is provided with a first Dustproof plate 432, limit threaded rod 433 is threaded on the top of the first screw mandrel 431 and the bottom of reinforcement inner disc 45 is equipped with a plurality of second screw mandrels 434, and the outer side of reinforcement inner disc 45 is provided with second Dust-proof plate 435, one end of the second screw rod 434 penetrates the outside of the second dust-proof plate 435 and is threadedly connected with a threaded torsion rod 436, and the middle part of the second dust-proof plate 435 is provided with a round notch for piercing the knife handle .

During work, when the handle part 2 passes through the interior of the reinforced inner disk 45, the staff twists the threaded turntable 422 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 The bolt-type turntable 421 and the threaded column 31 are fully stable, and a wrench can be used to twist the bolt-type turntable 421. When the bolt-type turntable 421 is twisted, the connected rotating member 41 and the inner ring wheel sprocket 42 are driven to rotate At the same time, the inner ring toothed plate 42 drives the long column gear 46 to rotate, and then the long column gear 46 drives the wheel racks 47 at the upper and lower ends to rotate, so that the four wheel racks 47 realize telescopic movement in the penetrating transverse groove 470, and then The periphery of the tool handle 2 is pressed by reinforcing the arc-shaped pressing part 48 in the inner disk 45, thereby achieving the purpose of reinforcing the tool handle 2 with different diameters.

During work, when the internal parts of the knife end reinforcement unit 4 are damaged, the threaded rod 433 can be unscrewed on the first screw rod 431, and the threaded torsion rod 436 can be unscrewed on the threaded torsion rod 436 to reinforce The inner ring of the inner disc 45 is maintained, and simultaneously, the first dust-proof plate 432 and the second anti-dust plate 432 and the second The dust plate 435 surrounds the reinforced inner disc 45, thereby playing a role of dust prevention, and is convenient for its installation or disassembly.

It is worth noting that the present invention realizes the rotational movement between the inner ring gear tooth plate 42, the long column gear 46, and the gear rack 47 by setting the twist between the bolt type turntable 421 and the threaded column 31, and then realizes the adjustment of different diameters. The tool handle part 2 is reinforced, and at the same time, the installation or disassembly between the threaded column 31 and the bolt-type turntable 421 is realized. Compared with the existing method of clamping the milling cutter bar through the collet cylinder, the present invention is more Convenience and stability.

It is worth noting that, by setting the T-shaped slide rail 411 and the C-shaped slide rail 412 in the present invention, the gear rack 47 can maintain limited movement in the through transverse groove 470, and at the same time, the gear teeth and the long columns in the gear rack 47 can be improved. The gear 46 is kept in tight meshing, so as to prevent the rack and rack 47 from shaking left and right, and improve the movement stability of the rack and rack 47 .

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 groove body area passing through the transverse groove 470, which is beneficial to prevent the gear rack 47 from excessively moving. The cooperation between the telescopic rod 414 and the arc-shaped part 415 makes the rack 47 return quickly, and the threaded connection between the spring telescopic rod 414 and the rack 47 can disassemble the rack 47 .

Embodiment two:

The technical solution is basically the same as that of Embodiment 1, the difference is that as shown in Figure 2 and Figure 9, a telescopic adjustable T-shaped milling cutter used in the fixed assembly of a T-shaped milling cutter includes a milling cutter column 1 and a milling cutter The tool handle 2 at the top of the column 1, the outer side of the milling cutter column 1 is detachably connected with a T-shaped milling cutter 11 in a circular array through bolts, the tool handle 2 includes a lower section of the tool handle 202 installed on the top of the milling cutter column 1, The top of the lower segment handle 202 is provided with a cavity screw 2021, the top of the lower segment handle 202 is provided with an upper segment handle 201, and the bottom of the upper segment handle 201 is provided with a thread thread groove 2022 that is convenient for the cavity screw rod 2021 to be accommodated. A solid screw 2023 is installed in the slot 2022, and the solid screw 2023 and the cavity screw 2021 are threadedly connected. The top of the upper handle 201 is provided with a ring-shaped fixed groove 20, and the arc-shaped pressed part 48 is far away from the inner circle of the reinforcement. The middle part of one side of the disc 45 is equipped with a limiting pressing part 49 compatible with the fixing groove 20, a limiting part 22 is installed on the top of the upper knife handle 201, and the bottom wall of the threaded column 31 is provided with a stopper 22 that is compatible with the limiting part 22. The main limit groove 32.

The worker inserts the hollow threaded rod 2021 on the lower handle 202 into the threaded groove 2022 for rotational movement, so that the telescopic movement between the upper handle 201 and the lower handle 202 can be realized, and at the same time, it is beneficial to prevent external dust from entering The outer wall of the solid screw rod 2023 and the inner wall of the hollow screw rod 2021.

First, during the insertion of the tool handle 2, the worker inserts the limiter 22 at the top of the tool handle 2 into the main limit groove 32 on the threaded column 31, so that the fixed groove 20 on the tool handle 2 and the limiter are pressed 49 is aligned, and then during the movement of the arc-shaped pressing part 48 close to the handle part 2, the limit pressing part 49 is directly pressed in the fixing groove 20 on the handle part 2 to further improve the reinforcement effect on the handle part 2 .

Embodiment three:

The technical solution is basically the same as that of Embodiment 1, the difference is that as shown in Figures 6-8, the bottom of the knife end reinforcement unit 4 is provided with a middle knife reinforcement unit 5 for reinforcing the middle part of the handle, and the middle knife reinforcement unit 5 includes Cavity box 51, the bottom of cavity box 51 is threadedly connected with three lifting screw rods 54, the inner chamber of cavity box 51 is used to drive the linkage part of three lifting screw rods 54 synchronous movement, between three lifting screw rods 54 A moving disc 55 is provided, and the inner ring of the moving disc 55 is rotatably connected with a sleeve disc 56. The linkage part includes a hollow disc 50 installed in the middle of the inner cavity of the cavity box 51, and the bottom wall of the cavity box 51 rotates. The first outer ring tooth plate 52 is connected, and the bottom wall of the inner cavity of the cavity box 51 is connected with the connecting gear 53 in rotation corresponding to the side of the lifting screw 54. The connecting gear 53 meshes with the first outer ring wheel tooth plate 52, and the lifting The top of the screw mandrel 54 passes through the cavity of the cavity box 51 and is fixedly connected with the connecting gear 53. The right side of the front end of the cavity box 51 is provided with a linkage groove, and the linkage groove is rotatably connected with the second outer ring wheel tooth plate 511. Engaged artificial twisting wheel 512, the top of the lower knife handle 202 is equipped with arc-shaped connectors 21 in an annular array, and the inner ring of the sleeve disc 56 is provided with through holes 57 for the arc-shaped connectors 21 to pass through. The inner ring of the cylinder disc 56 is located between the adjacent through holes 57 to form an arc groove 58 for pressing the arc connector 21. The cavity box 51 is located below the artificial twist wheel 512 and is provided with a device for controlling the artificial twist. The ratchet unit 5130 that the wheel 512 rotates. The ratchet unit 5130 includes a fixed block 514 installed on one side of the cavity box 51 and below the side of the ratchet disc 513. The top of the fixed block 514 is rotatably connected with a clamping head for clamping the ratchet disc 513. 515, 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.

During work, when the tool handle is fixed on the main shaft 3 so that the design length of the tool bar is longer, the staff twists the artificial twisting wheel 512 to rotate, and the artificial twisting wheel 512 drives the empty cylinder disc 50 and the first outer ring gear teeth The disk 52 rotates synchronously, and then the first outer ring toothed disk 52 drives the three connecting gears 53 to rotate synchronously to realize the synchronous rotation of the lifting screw 54, and then realize the lifting movement of the moving disk 55 on the lifting screw 54, According to the length of the cutter bar, move the moving disc 55 to the middle of the cutter bar, then turn the sleeve disc 56 so that the through hole 57 passes through the arc connector 21 on the lower handle 202, and then turn the sleeve circle disk 56, so that the arc-shaped connecting member 21 moves to the inside of the arc-shaped groove 58, and then the second outer ring wheel toothed plate 511 and the first outer ring wheel toothed plate 52 are rotated again by manually twisting the wheel 512, so that the moving circle The disk 55 moves upward until the arc-shaped connecting piece 21 is close to the arc-shaped groove 58, so as to play a role of reinforcement at the middle position of the knife handle 2 and limit the position of the knife handle 2 at the same time. Compared with the prior art, the force between the end of the handle and the edge of the milling cutter in the present invention is uniform, the handle is not easy to shake during use, and the processing efficiency of the handle part 2 is improved.

When the manual twisting wheel 512 rotates, the clamping head 515 will suppress the ratchet disc 513 at any time under the cooperation of the return spring 516 to prevent the manual twisting wheel 512 from rotating in a small range. At the same time, the pull rod 517 can be pulled to drive the clamping head. 515 is separated from the inside of the ratchet disc 513, and then the artificial twisting wheel 512 can be quickly twisted to rotate, thereby improving the convenience of quick locking of the artificial twisting wheel 512.

Working principle: When used for telescopic adjustable T-type milling cutter and its fixed components, when used:

First, during the insertion process of the tool handle 2, the staff inserts the stopper 22 on the top of the knife handle 2 into the main stop groove 32 on the threaded column 31, so that the fixed groove 20 on the knife handle 2 and the limiter Pressed parts 49 are aligned, and 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-shaped 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 will drive the rotating part 41 and the inner ring gear 42 to rotate, and the inner ring gear 42 will drive the long column gear 46 rotates, and then the long column gear 46 drives the racks 47 at the upper and lower ends to rotate, so that the four racks 47 realize telescopic movement in the transverse groove 470, and then the arc-shaped pressed parts in the inner disc 45 are reinforced 48 suppresses the periphery of the knife handle 2, and then when the arc-shaped pressing part 48 moves close to the knife handle 2, the limit pressing part 49 is directly pressed in the fixed groove 20 on the knife handle 2;

Second, when the internal parts of the knife end reinforcement unit 4 are damaged, it can be unscrewed on the first screw mandrel 431 by the limit threaded rod 433, and the threaded torsion rod 436 can be unscrewed on the threaded torsion rod 436 to reinforce The inner ring of the inner disc 45 is maintained, and simultaneously, the first dust-proof plate 432 and the second anti-dust plate 432 and the second The dust plate 435 is surrounded on the reinforced inner disk 45, and then plays a dust-proof effect;

Third, when the tool handle is fixed on the main shaft 3 so that the design length of the tool bar is longer, the staff twists the artificial twisting wheel 512 to rotate, and the artificial twisting wheel 512 drives the empty cylinder disc 50 and the first outer ring gear teeth The disk 52 rotates synchronously, and then the first outer ring toothed disk 52 drives the three connecting gears 53 to rotate synchronously to realize the synchronous rotation of the lifting screw 54, and then realize the lifting movement of the moving disk 55 on the lifting screw 54, According to the length of the cutter bar, move the moving disc 55 to the middle of the cutter bar, then turn the sleeve disc 56 so that the through hole 57 passes through the arc connector 21 on the lower handle 202, and then turn the sleeve circle disk 56, so that the arc-shaped connecting member 21 moves to the inside of the arc-shaped groove 58, and then the second outer ring wheel toothed plate 511 and the first outer ring wheel toothed plate 52 are rotated again by manually twisting the wheel 512, so that the moving circle The disc 55 moves upward until the arc-shaped connecting piece 21 is tightly attached to the arc-shaped groove 58, so as to play a role of reinforcement at the middle position of the knife handle 2.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A fixed assembly of a T-type milling cutter, comprising a main shaft (3), characterized in that: the bottom wall of the main shaft (3) is equipped with a threaded post (31), and the bottom of the threaded post (31) is provided with A plurality of secondary limit grooves (33), the bottom of the main shaft (3) is provided with a knife end reinforcement unit (4) for reinforcing the handle port, and the bottom of the knife end reinforcement unit (4) is provided with a A mid-knife reinforcing unit (5) for reinforcing the middle part of the shank; The knife end reinforcement unit (4) includes a rotating member (41), the inner ring of the rotating member (41) is equipped with a protruding inner ring wheel tooth plate (42), and the inner ring wheel tooth plate (42) The upper and lower ends of the upper and lower ends are rotatably connected with a reinforced outer disc (43), and the reinforced outer disc (43) is rotatably connected at the inner ring of the rotating member (41), and the upper and lower ends of the reinforced outer disc (43) are equipped with Connecting sleeves (44) in an annular array, the side of the connecting sleeve (44) away from the reinforced outer disk (43) is equipped with a reinforced inner disk (45) for penetrating the knife handle, the connecting sleeve (44) There is a long column gear (46) that is rotatably connected to the middle part of the center through bearings, and an annular array of penetrating transverse grooves (470) is provided between the reinforced inner disk (45) and the reinforced outer disk (43). A gear rack (47) is provided slidingly through the transverse groove (470), and the gear rack (47) is engaged with the long column gear (46), and the long column gear (46) is close to the reinforced inner disk (45 ) is equipped with an arc pressing part (48) for pressing the handle of a knife, and the outer side of the rotating part (41) is provided with a driving part for driving the rotating part (41) to rotate, and the reinforced outer disk (43 ) are provided with dust-proof parts at the upper and lower ends, and the top of the reinforced inner disc (45) is provided with a limit threaded rod (433), and the limit threaded rod (433) is set on the inner side of the secondary limit groove (33) ; The reinforcement unit (5) in the knife comprises a cavity box (51), the bottom of the cavity box (51) is threadedly connected with three lifting screw rods (54), and the inner cavity of the cavity box (51) is used for In the linkage part that drives the three lifting screw rods (54) to move synchronously, a moving disk (55) is arranged between the three lifting screw rods (54), and the inner ring of the moving disk (55) is rotatably connected There is sleeve disc (56). 2. The fixing assembly of a T-shaped milling cutter according to claim 1, characterized in that: the driving part includes a threaded turntable (422) installed on the outer wall of the rotating member (41), and the threaded turntable (422) The top of 422) is equipped with a bolt type turntable (421), and the inner ring of the bolt type turntable (421) and the outer ring of the threaded column (31) are provided with matching threaded holes. 3. The fixing assembly of a T-shaped milling cutter according to claim 1, characterized in that: a T-shaped slide rail (411) is installed on the side wall penetrating through the transverse groove (470), and the rack and wheel (47) A C-shaped slide rail (412) is installed near the side of the T-shaped slide rail (411). 4. The fixing assembly of a T-shaped milling cutter according to claim 3, characterized in that: a notch (413) is opened on the side of the rack (47) away from the reinforced inner disc (45), The notch (413) is internally threaded with a spring telescopic rod (414), and the side of the spring telescopic rod (414) away from the rack (47) is provided with an arc (415). 5. The fixing assembly of a T-shaped milling cutter according to claim 1, characterized in that: the dust-proof component includes a plurality of first screw rods (431) installed on the top of the reinforced inner disk (45), The bottom of the first screw rod (431) is covered with a first dust-proof plate (432), and the limit threaded rod (433) is threaded on the top of the first screw rod (431) to connect the reinforced inner circle The bottom of the disc (45) is equipped with a plurality of second screw mandrels (434), and the outer side of the reinforced inner disc (45) is covered with a second dust-proof plate (435), and the second screw mandrels (434) One end of the second dustproof plate (435) is threaded through the outer side of the second dustproof plate (435) and threaded torsion bar (436). 6. The fixing assembly of a T-shaped milling cutter according to claim 1, characterized in that: the linkage part includes a hollow disc (50) installed in the middle of the inner cavity of the cavity box (51), the The bottom wall of the cavity box (51) is rotatably connected with the first outer ring gear plate (52), and the bottom wall of the inner cavity of the cavity box (51) is rotatably connected with a connecting gear on one side corresponding to the lifting screw (54). (53), the connecting gear (53) is meshed with the first outer ring toothed disc (52), and the top of the lifting screw (54) passes through the cavity of the cavity box (51) and is connected with the connecting gear ( 53) Fixed connection, the right side of the front end of the cavity box (51) is provided with a linkage groove, and the artificial twisting wheel (512 ), the cavity box (51) is located below the artificial twisting wheel (512) and is provided with a ratchet unit (5130) for controlling the rotation of the artificial twisting wheel (512). 7. The fixing assembly of a T-shaped milling cutter according to claim 6, characterized in that: the ratchet unit (5130) includes a wheel mounted on one side of the cavity box (51) and below the side of the ratchet disc (513). The fixed block (514), the top of the fixed block (514) is rotatably connected with the clamping head (515) for clamping the ratchet disc (513), the right end of the clamping head (515) and the cavity box ( 51) is connected with a return spring (516), and a pull rod (517) is installed on the side of the clamping head (515) away from the cavity box (51). 8. The telescopic adjustable T-type milling cutter used in the fixed assembly of a T-type milling cutter according to any one of claims 1 and 7, characterized in that: it includes a milling cutter column (1) and is arranged on the milling cutter The tool handle (2) at the top of the column (1), the outer side of the milling cutter column (1) is detachably connected with T-shaped milling cutters (11) in an annular array, the tool handle (2) It includes a lower segment tool 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 segment tool handle (202), and a top of the lower segment tool handle (202) is provided with The upper section of the handle (201), the bottom of the upper section of the knife handle (201) is provided with a threaded groove (2022) to facilitate the storage of the cavity screw (2021), and a solid screw is installed in the threaded groove (2022) (2023), threaded connection between the solid screw rod (2023) and the cavity screw rod (2021). 9. A telescopic adjustable T-shaped milling cutter according to claim 8, characterized in that: the top of the upper shank (201) is provided with a fixed groove (20) in an annular array, and the arc-shaped pressing Part (48) away from the middle part of a side of the reinforced inner disc (45) is equipped with a limiting pressing part (49) that is compatible with the fixing groove (20), and a limiting part is installed on the top of the upper section of the knife handle (201) (22), the bottom wall of the threaded column (31) is provided with a main limiting slot (32) matching the limiting member (22). 10. A telescopic adjustable T-shaped milling cutter according to claim 8, characterized in that: the top of the lower handle (202) is equipped with arc-shaped connectors (21) in a circular array, and the sleeve The inner ring of the sleeve disc (56) is provided with a through hole (57) for piercing the arc connector (21), and the inner ring of the sleeve disc (56) is located between the adjacent through holes (57). Arc slots 58 for pressing the arc connectors (21) are spaced apart.

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