Cutter head mounting table for enveloping worm rotary milling machine

Abstract

The utility model relates to the field of rotary milling machines, in particular to a cutterhead mounting table for an enveloping worm rotary milling machine, which comprises a base, a rotary table rotationally connected onto the base, a cutterhead mounting seat fixed on the rotary table, a first cavity arranged on the base, a motor arranged in the first cavity, and a rotating shaft fixed on the bottom surface of the rotary table. A second cavity is formed in the rotary table, an inserting groove communicated with the second cavity is formed in the center of the cutterhead installation base, and a cutterhead tensioning mechanism is arranged in the second cavity. Through the arrangement of the cutter head tensioning mechanism, on one hand, the fixing efficiency is greatly improved, on the other hand, the fixing firmness of the cutter head is also greatly improved, and therefore the stability of the cutter head in the worm machining process is improved; and screw holes do not need to be formed in the cutterhead when the cutterhead is machined, so that on one hand, the machining difficulty of the cutterhead is greatly reduced, on the other hand, various types of cutterheads can be adapted, and the adaptability is wide.

Description

Technical Field

[0001] This utility model relates to the field of rotary milling machines, and more particularly to a cutter head mounting table for an envelope toroidal worm rotary milling machine. Background Technology

[0002] A worm milling machine is a high-precision, high-efficiency machining tool primarily used for machining worm gears. Its working principle combines the characteristics of worm gear transmission and high-speed rotation; by using a cutting tool rotating at high speed, the worm gear transmission enables high-precision machining of the workpiece. Before machining a worm gear, the cutting tool, such as a cutter head, needs to be mounted on a cutter head mounting table. For example, the planar worm gear cyclone milling cutter in patent application number CN202320465255.X uses a cutter head similar to the cyclone milling cutter mentioned above. In existing technologies, the cutter head is often secured to the mounting table with several screws. However, this screw-locking method has the following drawbacks: 1) Because the cutter head has many cutting edges, there are many sharp points, posing a significant safety hazard to operators when fixing the cutter head; 2) Screw-locking often requires time for installation and removal, resulting in low efficiency; 3) Screw fixing requires drilling holes in the cutter head, and some cutter heads, due to their special characteristics, are not suitable for screw-locking, making installation difficult. Therefore, there is an urgent need for a cutter head mounting table with high installation safety, high installation efficiency, and wide adaptability. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a cutter head mounting platform for an enveloping toroidal worm gear milling machine, thus solving the problems existing in the prior art. The present invention automatically tightens the cutter head by setting a cutter head tensioning mechanism inside the cutter head mounting platform, so that the cutter head is firmly pressed onto the cutter head mounting platform, thereby achieving the fixation of the cutter head and the cutter head mounting platform. This cutter head fixing method not only has high installation safety and high installation efficiency, but can also be adapted to various types of cutter heads.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cutter head mounting table for an enveloping toroidal worm gear milling machine, comprising a base, a turntable rotatably connected to the base, a cutter head mounting seat fixed on the turntable, a first cavity opened on the base, a motor disposed in the first cavity, the rotating shaft of the motor fixed on the bottom surface of the turntable, a second cavity opened in the turntable, a slot communicating with the second cavity opened at the center position of the cutter head mounting seat, and a cutter head tensioning mechanism disposed in the second cavity.

[0007] Preferably, the cutter head tensioning mechanism includes a hydraulic cylinder disposed in the second cavity, and a fixed clamping structure at the end of the piston rod of the hydraulic cylinder.

[0008] Preferably, the clamping structure includes a T-shaped push-pull rod fixed to the end of the piston rod of the hydraulic cylinder. The T-shaped push-pull rod is movably connected to a sleeve. The sleeve is fixed to the inner wall of the second cavity by a connecting block. The sleeve has a groove on which the T-shaped push-pull rod moves up and down. The top of the sleeve is fixed with the lower end of a connecting pipe. The upper end of the connecting pipe is fixed with a clamping sleeve. The top of the T-shaped push-pull rod is fixed with a pull rod. The pull rod passes through the groove, the sleeve, the connecting pipe and the clamping sleeve in sequence, and the upper end of the pull rod is fixed with a chuck.

[0009] Preferably, the chuck includes a base plate, on which a first annular portion is fixed. The first annular portion is connected to a second annular portion via a transition portion. A clamping portion is connected to the second annular portion. The clamping portion is trumpet-shaped, with a smaller bottom and a larger top. Several notches are provided at equal intervals on the side walls of the transition portion, the second annular portion, and the clamping portion.

[0010] Preferably, there are three equally spaced notches.

[0011] Preferably, the base is rotatably connected to the turntable via bearings.

[0012] Preferably, the cutter head mounting base has several blind holes, and an elastic structure is fixed on the bottom surface of the blind holes.

[0013] Preferably, the elastic structure is a rubber block fixed to the bottom surface of the blind hole.

[0014] Preferably, the elastic structure is a spring fixed to the bottom surface of the blind hole, and a movable plate is fixed to the upper end of the spring.

[0015] (III) Beneficial Effects

[0016] 1. This utility model, through the design of the insertion hole, allows operators to simply insert the insertion rod of the cutter head into the slot during installation, eliminating the need for additional operations and greatly improving operational safety. The cutter head tensioning mechanism automatically fixes the cutter head, significantly improving both fixing efficiency and stability, thereby enhancing the stability of the cutter head during worm gear machining. During cutter head machining, only a matching insertion rod needs to be fixedly connected to the bottom surface of the cutter head; no screw holes are required. This greatly reduces the difficulty of cutter head machining and allows for wide compatibility with various types of cutter heads.

[0017] 2. This utility model, through the design of blind holes and elastic structures, serves two purposes: firstly, it limits the movement, leaving a gap between the bottom surface of the cutter head and the top surface of the cutter head mounting base, thus allowing for sufficient clearance when the pull rod lowers the cutter head; secondly, the elastic structure also allows the support rod at the bottom of the cutter head to descend when the pull rod lowers the cutter head; furthermore, the multiple sets of blind holes and elastic structures ensure more even and comprehensive support for the cutter head from the mounting base, thereby greatly increasing the stability of the cutter head during operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0019] Figure 2 This utility model Figure 1 A sectional view.

[0020] Figure 3 This utility model Figure 1 A sectional view.

[0021] Figure 4 This is a schematic diagram of the clamping structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the clamp of this utility model.

[0023] Figure 6 This is a three-dimensional schematic diagram of the clamp of this utility model.

[0024] Figure 7 This is a schematic diagram of the cutter head mounting base, blind hole, and rubber block of this utility model.

[0025] Figure 8 This is a schematic diagram of the cutter head mounting base, blind hole, spring, and movable plate of this utility model.

[0026] In the diagram: 1-base, 2-turntable, 3-cutter head mounting base, 4-first cavity, 5-motor, 6-second cavity, 7-slot, 8-cutter head tensioning mechanism, 9-cylinder, 10-clamping structure, 11-T-shaped push-pull rod, 12-sleeve, 13-connecting block, 14-groove, 15-connecting pipe, 16-clamping sleeve, 17-pull rod, 18-clamp, 19-base plate, 20-first annular part, 21-transition part, 22-second annular part, 23-clamping part, 24-notch, 25-bearing, 26-blind hole, 27-elastic structure, 28-rubber block, 29-spring, 30-moving plate. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-8The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] This utility model provides a technical solution: a cutter head mounting platform for an enveloping toroidal worm gear milling machine, comprising a base 1, a turntable 2 rotatably connected to the base 1, a cutter head mounting seat 3 fixed on the turntable 2, a first cavity 4 formed in the base 1, a motor 5 disposed within the first cavity 4, the rotating shaft of the motor 5 fixed to the bottom surface of the turntable 2, a second cavity 6 formed within the turntable 2, a slot 7 communicating with the second cavity 6 being formed at the center of the cutter head mounting seat 3, and a cutter head tensioning mechanism 8 disposed within the second cavity 6. A rod is fixedly connected to the center of the bottom surface of the mounted cutter head. The rotating shaft of the motor 5 is fixed at the center of the bottom surface of the turntable 2, and the rotation of the turntable 2 is achieved by the motor 5, thereby achieving the rotation of the cutter head mounting seat 3, and ultimately the rotation of the cutter head. When installing the cutter head, first insert the cutter head's insert rod into the slot 7, where the outer diameter of the insert rod is equal to the inner diameter of the slot 7. The lower end of the cutter head insert rod is inserted into the cutter head tensioning mechanism 8. Then, the cutter head tensioning mechanism 8 pulls the cutter head's insert rod downwards, thus firmly pressing the cutter head onto the cutter head mounting base 3. When it is necessary to disassemble the cutter head, the cutter head tensioning mechanism 8 only needs to be operated in reverse to loosen the cutter head insert rod. This invention, through the design of the insertion hole 7, allows the operator to simply insert the cutter head's insert rod into the slot 7 during cutter head installation, eliminating the need for additional operations and greatly improving operational safety. The cutter head tensioning mechanism 8 achieves automatic fixation of the cutter head, significantly improving fixation efficiency, and also greatly enhances the firmness of the cutter head fixation, thereby improving the stability of the cutter head during worm gear machining. When machining the cutter head, it is only necessary to fix and connect a plug rod that matches the plug hole 7 on the bottom surface of the cutter head. There is no need to drill screw holes on the cutter head. On the one hand, this greatly reduces the difficulty of machining the cutter head, and on the other hand, it can be adapted to various types of cutter heads, with wide adaptability.

[0029] The cutter head tensioning mechanism 8 includes a hydraulic cylinder 9 disposed in the second cavity 6, and a clamping structure 10 fixed at the end of the piston rod of the hydraulic cylinder 9. The hydraulic cylinder 9 is fixed at the center position of the bottom surface of the second cavity 6, and the clamping structure 10 is used to control the clamping and releasing of the insert rod on the cutter head by the hydraulic cylinder 9.

[0030] The clamping structure 10 includes a T-shaped push-pull rod 11 fixed to the end of the piston rod of the oil cylinder 9. The T-shaped push-pull rod 11 is movably connected to a sleeve 12. The sleeve 12 is fixed to the inner wall of the second cavity 6 through a connecting block 13. The sleeve 12 has a groove 14 on which the T-shaped push-pull rod 11 moves up and down. The lower end of a connecting pipe 15 is fixed to the top of the sleeve 12. A clamping sleeve 16 is fixed to the upper end of the connecting pipe 15. A pull rod 17 is fixed to the top of the T-shaped push-pull rod 11. The pull rod 17 passes through the groove 14, the sleeve 12, the connecting pipe 15 and the clamping sleeve 16 in sequence. A chuck 18 is fixed to the upper end of the pull rod 17. This is the specific structure of the clamping structure 10, and its working principle is as follows: When installing the cutter head, first insert the insert rod on the cutter head into the slot 7, with the lower end of the insert rod extending into the chuck 18. At this time, there is a suitable gap between the bottom surface of the cutter head and the top surface of the cutter head mounting base 3, which is to reserve the gap for the cutter head insert rod to move downward. Then, the hydraulic cylinder 9 starts, and its piston rod retracts, pulling the chuck 18 into the clamping sleeve 16, thereby clamping and pulling down the insert rod on the cutter head until it can no longer be pulled. In this way, the cutter head is firmly fixed. When it is necessary to disassemble the cutter head, the hydraulic cylinder 9 only needs to be operated in the opposite direction to release the cutter head insert rod.

[0031] The chuck 18 includes a base plate 19, on which a first annular portion 20 is fixed. The first annular portion 20 is connected to a second annular portion 22 via a transition portion 21. A clamping portion 23 is connected to the second annular portion 22. The clamping portion 23 is trumpet-shaped, smaller at the bottom and larger at the top. Several notches 24 are equidistantly provided on the side walls of the transition portion 21, the second annular portion 22, and the clamping portion 23. This is the specific structure of the chuck 18. The outer diameter of the first annular portion 20 is equal to the inner diameter of the clamping sleeve 16, and the outer diameter of the second annular portion 22 is slightly smaller than the inner diameter of the clamping sleeve 16. The clamping portion 23 is a metal sheet with a certain degree of elasticity, capable of undergoing a certain degree of deformation. Through the cooperation of the clamping portion 23 and the notches 24, the tool holder is clamped. The diameter of the cutter head insert rod is smaller than the diameter of the top opening of the chuck 18 in the fully open state, and the diameter of the cutter head insert rod is larger than the diameter of the top opening of the chuck 18 after it is fully pulled into the clamping sleeve 16. This ensures that the cutter head insert rod can be smoothly inserted into the chuck 18 and ultimately clamped. During the process of the hydraulic cylinder 9 pulling down the pull rod 11, the chuck 18 is pulled into the clamping sleeve by the pull rod. During this process, the top opening of the chuck 18 also gradually contracts until its diameter is equal to the outer diameter of the cutter head insert rod. At this point, the chuck 18 just clamps the cutter head insert rod. Then, as the pull rod 11 continues to pull down, it pulls the chuck 18 and the cutter head insert rod together into the clamping sleeve 16 until it can no longer be pulled. This firmly fixes the pull rod, which in turn firmly fixes the cutter head, greatly improving the fixation effect.

[0032] The notch 24 is set in three equidistant openings. Setting the notch 24 to three notches notches not only achieves a good clamping effect, but also reduces the difficulty of machining the chuck 18.

[0033] The base 1 is rotatably connected to the turntable 2 via the bearing 25, thereby achieving the rotatable connection between the base 1 and the turntable 2.

[0034] The cutter head mounting base 3 has several blind holes 26. An elastic structure 27 is fixed to the bottom surface of each blind hole 26. Support rods matching the size and number of the blind holes 26 are fixed to the bottom surface of the cutter head. When the support rods are inserted into the blind holes 26 and contact the elastic structure 27, a certain gap remains between the bottom surface of the cutter head and the top surface of the cutter head mounting base 3. The elastic structure 27 serves two purposes: firstly, it limits movement, leaving a gap between the bottom surface of the cutter head and the top surface of the cutter head mounting base 3, thus allowing for sufficient clearance when the pull rod 11 pulls down the cutter head; secondly, the elastic structure 27 also allows for the lowering of the support rods at the bottom of the cutter head when the pull rod 11 pulls down the cutter head. Furthermore, the arrangement of multiple sets of blind holes 26 and elastic structures 27 ensures that the cutter head is supported more evenly and comprehensively by the cutter head mounting base 3, thereby greatly increasing the stability of the cutter head during operation.

[0035] The elastic structure 27 is a rubber block 28 fixed on the bottom surface of the blind hole 26. The reason for setting the elastic structure 27 as a rubber block 28 is that the rubber block 28 has good deformation properties and the structure is simple and easy to install.

[0036] The elastic structure 27 is a spring 29 fixed on the bottom surface of the blind hole 26. A movable plate 30 is fixed to the upper end of the spring 29. This is another embodiment of the elastic structure 27. The elastic structure 27 of this structure has stronger deformation performance and is not easily damaged.

[0037] Working Principle: When installing the cutter head, first insert the cutter head's insert rod into the slot 7, where the outer diameter of the insert rod is equal to the inner diameter of the slot 7. The lower end of the cutter head insert rod is inserted into the cutter head tensioning mechanism 8. Then, the cutter head tensioning mechanism 8 pulls the cutter head's insert rod downwards, thus firmly pressing the cutter head onto the cutter head mounting base 3. When it is necessary to disassemble the cutter head, the cutter head tensioning mechanism 8 only needs to be operated in reverse to loosen the cutter head insert rod. This invention, through the design of the insertion hole 7, allows the operator to simply insert the cutter head's insert rod into the slot 7 during cutter head installation, eliminating the need for additional operations and greatly improving operational safety. The cutter head tensioning mechanism 8 achieves automatic fixation of the cutter head, significantly improving fixation efficiency, and also greatly enhances the firmness of the cutter head fixation, thereby improving the stability of the cutter head during worm gear machining. When machining the cutter head, it is only necessary to fix and connect a plug rod that matches the plug hole 7 on the bottom surface of the cutter head. There is no need to drill screw holes on the cutter head. On the one hand, this greatly reduces the difficulty of machining the cutter head, and on the other hand, it can be adapted to various types of cutter heads, with wide adaptability.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutter head mounting table for an envelope toroidal worm gear milling machine, characterized in that, Includes a base (1), on which a turntable (2) is rotatably connected, and on which a cutter head mounting seat (3) is fixed. A first cavity (4) is provided on the base (1), and a motor (5) is provided in the first cavity (4). The rotating shaft of the motor (5) is fixed on the bottom surface of the turntable (2). A second cavity (6) is provided in the turntable (2). A slot (7) communicating with the second cavity (6) is provided at the center of the cutter head mounting seat (3). A cutter head tensioning mechanism (8) is provided in the second cavity (6).

2. The cutter head mounting table for an envelope toroidal worm gear milling machine according to claim 1, characterized in that, The cutter head tensioning mechanism (8) includes a hydraulic cylinder (9) disposed in the second cavity (6), and the piston rod end of the hydraulic cylinder (9) is fixed with a clamping structure (10).

3. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 2, characterized in that, The clamping structure (10) includes a T-shaped push-pull rod (11) fixed to the end of the piston rod of the oil cylinder (9). The T-shaped push-pull rod (11) is movably connected to a sleeve (12). The sleeve (12) is fixed to the inner wall of the second cavity (6) by a connecting block (13). The sleeve (12) has a groove (14) for the T-shaped push-pull rod (11) to move up and down. The top of the sleeve (12) is fixed with the lower end of a connecting pipe (15). The upper end of the connecting pipe (15) is fixed with a clamping sleeve (16). The top of the T-shaped push-pull rod (11) is fixed with a pull rod (17). The pull rod (17) passes through the groove (14), the sleeve (12), the connecting pipe (15), and the clamping sleeve (16) in sequence. The upper end of the pull rod (17) is fixed with a chuck (18).

4. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 3, characterized in that, The chuck (18) includes a base plate (19), on which a first annular portion (20) is fixed. The first annular portion (20) is connected to a second annular portion (22) via a transition portion (21). A clamping portion (23) is connected to the second annular portion (22). The clamping portion (23) is trumpet-shaped, with a smaller bottom and a larger top. Several notches (24) are equidistantly provided on the side walls of the transition portion (21), the second annular portion (22), and the clamping portion (23).

5. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 4, characterized in that, The notch (24) is provided in three equidistant spaces.

6. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 1, characterized in that, The base (1) is rotatably connected to the turntable (2) via a bearing (25).

7. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 1, characterized in that, The cutter head mounting base (3) has several blind holes (26), and an elastic structure (27) is fixed on the bottom surface of the blind holes (26).

8. A cutter head mounting table for an enveloping toroidal worm gear milling machine according to claim 7, characterized in that, The elastic structure (27) is a rubber block (28) fixed on the bottom surface of the blind hole (26).

9. A cutter head mounting table for an envelope toroidal worm gear milling machine according to claim 7, characterized in that, The elastic structure (27) is a spring (29) fixed on the bottom surface of the blind hole (26), and a movable plate (30) is fixed to the upper end of the spring (29).

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