CN113523388A

CN113523388A - Direct-drive milling device and milling equipment

Info

Publication number: CN113523388A
Application number: CN202111077525.1A
Authority: CN
Inventors: 彭子平; 苏良飞; 古金銮
Original assignee: Jiangsu Desu Intelligent Machinery Co ltd; Stebern Changzhou New Material Technology Co ltd
Current assignee: Jiangsu Desu Intelligent Machinery Co ltd; Stebern Changzhou New Material Technology Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-10-22
Anticipated expiration: 2041-09-15
Also published as: CN113523388B

Abstract

The invention discloses a direct-drive milling device and milling equipment, wherein the milling device comprises a base, a cutter head, a rotary mounting frame and a motor system, wherein the base comprises a first mounting cavity extending along a first direction; the cutter head is rotatably arranged at the front end of the base along the axis in the first direction, a second installation cavity corresponding to the first installation cavity is arranged at the rear end of the cutter head, and installation holes penetrating through the second installation cavity are formed in the peripheral side of the cutter head; the rotary mounting frame is rotatably mounted in the mounting hole along the radial axis of the cutter head and is used for mounting a milling cutter; the motor system drive connect in the blade disc with rotate the mounting bracket, wherein, motor system include with blade disc lug connection's first motor need not intermediate links such as lead screw, chain, belt, and the at utmost avoids the not enough of anti-sound clearance, inertia, frictional force and rigidity that traditional scheme exists, and this scheme performance is better.

Description

Direct-drive milling device and milling equipment

Technical Field

The invention relates to the technical field of milling, in particular to a direct-drive milling device and milling equipment.

Background

In a traditional milling device, a common motor is mostly in an indirect connection mode through a transmission mechanism in a cutter head driving mode, although a driving effect can be achieved, inevitably, factors such as gaps, elastic deformation and friction damping are increased in the traditional driving mode (belts, gears, chains and the like) from the mechanical angle, so that the reduction and loss of the rigidity and the response characteristic of equipment are caused, and the performance is poor.

Disclosure of Invention

The invention mainly aims to provide a direct-drive milling device and milling equipment, and aims to solve the problem that the conventional milling device is poor in driving mode performance.

In order to achieve the above object, the present invention provides a direct-drive milling apparatus, including:

the base comprises a first mounting cavity extending along a first direction;

the cutter head is rotatably arranged at the front end of the base along the axis in the first direction, a second mounting cavity corresponding to the first mounting cavity is arranged at the rear end of the cutter head, and mounting holes penetrating through the second mounting cavity are formed in the peripheral side of the cutter head;

the rotary mounting frame is rotatably mounted in the mounting hole along the radial axis of the cutter head and is used for mounting a milling cutter; and the number of the first and second groups,

the motor system, the drive connect in the blade disc with the rotation mounting bracket, wherein, the motor system include with blade disc lug connection's first motor.

Optionally, the cutter head includes a first rotating shaft extending toward the first mounting cavity, the first rotating shaft is disposed in the first mounting cavity, and is rotatably mounted to the base along an axis in a first direction;

the first motor comprises a first stator arranged on the inner wall of the first mounting cavity and a first rotor fixedly connected with the first rotating shaft.

Optionally, the first rotating shaft is a hollow shaft, an inner cavity of the first rotating shaft is communicated with the second mounting cavity, a second rotating shaft is further arranged in the inner cavity of the first rotating shaft, the second rotating shaft is rotatably mounted on the base along an axis in the first direction, and one end, close to the rotating mounting frame, of the second rotating shaft is in transmission connection with the rotating mounting frame;

the motor system further comprises a second motor, the second motor comprises a second stator and a second rotor, the second rotor is fixedly connected with the second rotating shaft, the second stator is arranged in the inner cavity of the first rotating shaft and fixedly installed on the base.

Optionally, a first bevel gear located in the second mounting cavity is sleeved on the second rotating shaft, and a second bevel gear meshed with the first bevel gear is arranged on the rotary mounting frame;

the rotary mounting frame can be movably arranged along the radial direction of the cutter head;

and a telescopic mechanism is further arranged in the second mounting cavity and drives the rotary mounting frame to move along the depth direction of the mounting hole so as to adjust the engagement or separation of the first bevel gear and the second bevel gear.

Optionally, telescopic machanism includes the cylinder, the cylinder has along the flexible portion of the degree of depth direction activity of mounting hole, telescopic machanism still includes the connecting piece, the connecting piece respectively with flexible portion with the rotation mounting bracket is connected.

Optionally, the number of teeth of the first bevel gear is smaller than the number of teeth of the second bevel gear.

Optionally, the base includes a stator fixing seat located at the rear end of the first mounting cavity, and the stator fixing seat is used for fixedly mounting the second stator.

Optionally, a plurality of the mounting holes are arranged at intervals along the circumferential direction of the cutter head;

the rotary mounting frame is provided with a plurality of rotary mounting frames, and each rotary mounting frame corresponds to one of the mounting holes.

Optionally, the cutter head and the base are correspondingly provided with a grating assembly, and the grating assembly is used for detecting the rotating position of the cutter head.

The invention also provides milling equipment comprising the direct-drive milling device, wherein the direct-drive milling device comprises:

the base comprises a first mounting cavity extending along a first direction;

In the technical scheme of the invention, the motor is directly connected with the driven part (cutter head), intermediate links such as a screw rod, a gear, a chain, a speed reducer and the like are not needed, the defects of reverberation clearance, inertia, friction force and rigidity of transmission systems such as screw rod transmission and the like are avoided to the greatest extent, and the scheme has better performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of a direct-drive milling apparatus provided in the present invention;

FIG. 2 is a schematic front view of the direct drive milling apparatus of FIG. 1;

FIG. 3 is a schematic side view of the direct drive milling apparatus of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the direct drive milling apparatus of FIG. 2 along the A-A direction;

FIG. 5 is a schematic view of a portion of the first motor of FIG. 4;

fig. 6 is a partial structural schematic view of the second motor in fig. 4.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Direct-drive milling device	31	Second bevel gear
1	Base seat	4	First motor
				11	First installation cavity	41	First stator
12	Stator fixing seat	42	First rotor
				2	Cutter head	5	Second electric machine
21	First rotating shaft/hollow shaft	51	Second stator
				22	Mounting hole	52	Second rotor
23	Second mounting cavity	6	Telescopic mechanism
				24	Second rotating shaft	61	Cylinder
241	First bevel gear	611	Expansion part
				3	Rotary mounting rack	62	Connecting piece

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of this, the present invention provides a direct-drive milling device and a milling apparatus, so as to solve the problem of poor performance of the driving method of the current milling device. Fig. 1 to 6 illustrate an embodiment of a direct drive milling apparatus according to the present invention.

Referring to fig. 1 to 4, the direct-drive milling device 100 includes a base 1, a cutter head 2, a rotary mounting frame 3, and a motor system, where the base 1 includes a first mounting cavity 11 extending along a first direction; the cutter head 2 is rotatably mounted at the front end of the base 1 along the axis of the first direction, a second mounting cavity 23 corresponding to the first mounting cavity 11 is arranged at the rear end of the cutter head 2, and mounting holes 22 penetrating through the second mounting cavity 23 are formed in the peripheral side of the cutter head 2; the rotary mounting frame 3 is rotatably mounted in the mounting hole 22 along the radial axis of the cutter head 2, and the rotary mounting frame 3 is used for mounting a milling cutter; the motor system drive connect in the blade disc 2 with rotate the mounting bracket 3, wherein, the motor system include with blade disc 2 lug connection's first motor 4.

In the technical scheme of the invention, the motor is directly connected with the driven piece (the cutter head 2), intermediate links such as a screw rod, a gear, a chain, a speed reducer and the like are not needed, the defects of a reverberation gap, inertia, friction force and rigidity of transmission systems such as screw rod transmission and the like are avoided to the greatest extent, and the performance of the scheme is better.

Referring to fig. 4 to 5, in the present invention, the cutter head 2 includes a first rotating shaft 21 extending toward the first installation cavity 11, and the first rotating shaft 21 is disposed in the first installation cavity 11 and rotatably installed on the base 1 along an axis of a first direction; first motor 4 is including locating the first stator 41 of first installation cavity 11 inner wall and with first pivot 21 fixed connection's first rotor 42, through first motor 4, drive first pivot 21 rotates, in order to drive cutter head 2 rotates, is convenient for switch different milling station.

Further, referring to fig. 4 and 6, the first rotating shaft 21 is a hollow shaft 21, an inner cavity of the first rotating shaft 21 is communicated with the second mounting cavity 23, a second rotating shaft 24 is further disposed in the inner cavity of the first rotating shaft 21, the second rotating shaft 24 is rotatably mounted on the base 1 along an axis of the first direction, and one end of the second rotating shaft 24, which is close to the rotating mounting frame 3, is in transmission connection with the rotating mounting frame 3; the motor system still includes second motor 5, second motor 5 includes second stator 51 and second rotor 52, second rotor 52 with 24 fixed connection in second pivot, second stator 51 is located the inner chamber of first pivot 21, fixed mounting in base 1, so, second motor 5 drives second pivot 24 rotates, and then drives it rotates to rotate mounting bracket 3, just blade disc 2 with the coaxial setting of driving motor who rotates mounting bracket 3 reduces installation space.

Referring to fig. 4, in order to change the rotation direction of the rotating mounting frame 3, a first bevel gear 241 located in the second mounting cavity 23 is sleeved on the second rotating shaft 24, and a second bevel gear 31 engaged with the first bevel gear 241 is arranged on the rotating mounting frame 3, so that the rotating mounting frame 3 can rotate along the radial direction of the cutter head 2 as an axis; in addition, the rotary mounting frame 3 can be movably arranged along the radial direction of the cutter head 2; a telescopic mechanism 6 is further disposed in the second mounting cavity 23, the telescopic mechanism 6 drives the rotary mounting frame 3 to move along the depth direction of the mounting hole 22, so as to adjust the engagement or the disengagement of the first bevel gear 241 and the second bevel gear 31, and thus, by adjusting the position of the first bevel gear 241, the rotation of the first motor 4 and the rotation of the second motor 5 are not interfered with each other.

It should be noted that, the embodiment of the telescopic mechanism 6 is not limited in the present invention, for example, in an embodiment of the present invention, the telescopic mechanism 6 includes a cylinder 61, the cylinder 61 has a telescopic portion 611 movable along the depth direction of the mounting hole 22, the telescopic mechanism 6 further includes a connecting member 62, and the connecting member 62 is respectively connected to the telescopic portion 611 and the rotating mounting frame 3, so as to facilitate adjusting the position of the rotating mounting frame 3, and the structure is simple and the cost is low. Of course, the mode of the hydraulic cylinder can also be adopted, which is not described in detail herein,

in addition, the gear ratio of the first bevel gear 241 to the second bevel gear 31 is not limited in the present invention, and in an embodiment of the present invention, the gear ratio of the first bevel gear 241 to the second bevel gear 31 is 3:1, so that the rotating mounting frame 3 can rotate at a high speed.

In order to facilitate installation of the direct drive milling apparatus 100, the base 1 includes a stator fixing seat 12 (see fig. 1 and 4) located at a rear end of the first installation cavity 11, where the stator fixing seat 12 is used for fixedly installing the second stator 51, so as to define positions of the first stator 41 and the second stator 51, and ensure stability of movement of the first rotor 42 and the second rotor 52.

It should be noted that, the number of the mounting holes 22 is not limited in the present invention, and in order to enable the direct drive milling apparatus 100 to have more milling stations, in the present invention, a plurality of mounting holes 22 (see fig. 1 and 3) are provided and are arranged at intervals along the circumferential direction of the cutter disc 2; it is equipped with a plurality ofly to rotate mounting bracket 3, each it corresponds one to rotate mounting bracket 3 mounting hole 22 sets up, so, the last milling cutter that can install of blade disc 2 is just more, and when needs another milling cutter, it is rotatory blade disc 2 switch to another milling cutter can, need not dismouting milling cutter, improve machining efficiency.

In addition, in the present invention, the cutter head 2 and the base 1 may further be correspondingly provided with a grating assembly (not shown in the figure), and the grating assembly is configured to detect a rotation position of the cutter head 2, so that the cutter head 2 can perform high-precision positioning according to the grating assembly, where the grating assembly is known to those skilled in the art and is not described herein again.

It should be noted that, in an embodiment of the present invention, the first motor 4 and the second motor 5 are both DD direct drive motors, that is, motors directly driving the executed member to rotate. In the scheme, the DD direct drive motor directly drives the executed element and has a larger rotation speed, for example, the normal peak speed of the DD direct drive motor can reach 5-10m/s, while the conventional lead screw and the like are at most 1m/s, and the wear loss of the conventional lead screw scheme is also high, and in the scheme, no contact friction exists between the stator and the rotor, so that the DD direct drive motor can reach a very high acceleration; the positioning precision is high, and the use in a precise occasion is met; in addition, the DD direct drive motor has a wide movement speed range, for example, the lowest operation speed of the DD direct drive motor can be 1um/s, and the application range is wide; in addition, the DD direct drive motor has the advantages of low noise during operation, simple structure and low maintenance cost, and can operate in a dust-free environment.

The specific working mode of one embodiment provided by the invention comprises the following steps: the cylinder 61 firstly enables the rotary mounting frame 3 to move in the radial direction of the cutter head 2, so that the second bevel gear 31 is separated from the pre-contracted first bevel gear 241, then the first motor 4 drives the first rotating shaft 21 to rotate, so as to drive the cutter head 2 to rotate, so that the milling cutter on the rotary mounting frame 3 moves to a specific milling station, then the first motor 4 stops working, the cylinder 61 drives the second bevel gear 31 to be meshed with the first bevel gear 241, the second motor 5 starts driving the second rotating shaft 24 to rotate, so as to drive the rotary mounting frame 3 to rotate, so that the milling cutter starts to perform milling, when the milling station needs to be switched, the second motor 5 stops rotating, and then the above operations are repeated, so that another milling cutter is switched to the corresponding specific milling station.

The invention further provides a milling device, which comprises the direct-drive milling device, wherein the milling device comprises all technical characteristics of the direct-drive milling device 100, so that the milling device also has the technical effects brought by all the technical characteristics, and the details are not repeated herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A direct drive milling device, comprising:

the base comprises a first mounting cavity extending along a first direction;

the motor system is in driving connection with the cutter head and the rotary mounting frame, and comprises a first motor directly connected with the cutter head;

the cutter head comprises a first rotating shaft extending towards the first mounting cavity, the first rotating shaft is arranged in the first mounting cavity and can be rotatably mounted on the base along an axis in a first direction;

the first motor comprises a first stator arranged on the inner wall of the first mounting cavity and a first rotor fixedly connected with the first rotating shaft;

the first rotating shaft is a hollow shaft, an inner cavity of the first rotating shaft is communicated with the second mounting cavity, a second rotating shaft is further arranged in the inner cavity of the first rotating shaft, the second rotating shaft is rotatably mounted on the base along the axis in the first direction, and one end, close to the rotating mounting frame, of the second rotating shaft is in transmission connection with the rotating mounting frame;

2. The direct drive milling device according to claim 1, wherein a first bevel gear located in the second mounting cavity is sleeved on the second rotating shaft, and a second bevel gear meshed with the first bevel gear is arranged on the rotary mounting frame;

3. The direct drive milling apparatus as claimed in claim 2, wherein the telescoping mechanism comprises a cylinder having a telescoping portion movable in a depth direction of the mounting hole, and a connecting member connected to the telescoping portion and the rotating mounting frame, respectively.

4. The direct drive milling apparatus as set forth in claim 2 wherein the first bevel gear has a greater number of teeth than the second bevel gear.

5. The direct drive milling apparatus as claimed in claim 1, wherein the base includes a stator holder at a rear end of the first mounting cavity, the stator holder being configured to fixedly mount the second stator.

6. The direct drive milling apparatus as claimed in claim 1, wherein the mounting holes are provided in plural numbers, spaced circumferentially of the cutter head;

7. The direct drive milling apparatus as claimed in claim 1, wherein the cutter head and the base are correspondingly provided with grating assemblies, and the grating assemblies are used for detecting the rotation position of the cutter head.

8. Milling apparatus, characterized in that it comprises a direct drive milling device according to any one of claims 1-7.