Magnetorheological damping vibration reduction cutter head

Abstract

The present invention discloses a magnetorheological damping and vibration reduction cutter head, comprising a housing, a rear end cover, a housing magnetic conductive device, a central magnetic conductive device, and a cutter head. The housing and the rear end cover are threadedly connected; the central magnetic conductive device and the housing magnetic conductive device are disposed within the housing; a gap is formed between the housing magnetic conductive device and the central magnetic conductive device, and the gap is filled with magnetorheological fluid, forming a magnetorheological damping channel; the cutter head is fixed to one end of the housing by screws. The present invention has a simple structure and achieves vibration reduction through the damping motion of the central magnetic conductive device. The current is used to control the viscosity of the magnetorheological fluid, thereby varying the resistance of the central magnetic conductive device, thereby realizing a cutter head with variable damping force.

Description

Technical Field

[0001] The present invention relates to a cutter head, in particular to a cutter head with damping and vibration reduction. Background Art

[0002] Cutting different materials on a lathe sometimes requires replacing different cutter heads. Traditional cutter heads experience varying degrees of vibration when cutting different materials on the same lathe, and the vibration frequency varies when cutting materials of varying hardness. Failure to implement vibration reduction measures can result in high scrap rates or severe cutter head wear, necessitating frequent cutter head replacements and increasing production costs. Therefore, when cutting different materials on the same lathe, multi-harmonic vibration control is necessary to adapt the cutter head to the vibrations generated when cutting multiple materials. Summary of the Invention

[0003] Based on the above description, the present invention proposes a magnetorheological damping and vibration reduction cutter head, which achieves the purpose of vibration reduction through the damping movement of the central core magnetic conductive device, and controls the viscosity of the magnetorheological fluid by the current size to change the resistance of the central core magnetic conductive device, thereby realizing a cutter head with changing damping force, ensuring the stability of the cutter head during cutting, and greatly improving the product yield.

[0004] The technical solutions adopted in the present invention are as follows:

[0005] The magnetorheological damping and vibration reduction cutter head includes a housing, a rear end cover, a housing magnetic conductive device, a core magnetic conductive device, and a cutter head. The housing is threadedly connected to the rear end cover. The core magnetic conductive device and the housing magnetic conductive device are sequentially provided from the center of the housing outward. The cutter head is fixed to one end of the housing by screws. A gap is formed between the housing magnetic conductive device and the core magnetic conductive device, and the gap is filled with magnetorheological fluid to form a magnetorheological damping channel.

[0006] The outer shell magnetic conductor comprises an outer head magnetic conductor, an outer tail magnetic conductor and an outer middle magnetic conductor; the outer tail magnetic conductor is located on the bottom of the outer shell; the outer head magnetic conductor is located at the end of the outer shell; and the two ends of the outer middle magnetic conductor are respectively connected to the outer tail magnetic conductor and the outer head magnetic conductor;

[0007] The outer middle magnetic conductor includes a first outer middle magnetic conductor, a second outer middle magnetic conductor and a third outer middle magnetic conductor; a first outer magnetic isolation ring is installed between the first outer middle magnetic conductor and the second outer middle magnetic conductor; a second outer magnetic isolation ring is installed between the second outer middle magnetic conductor and the third outer middle magnetic conductor; outer magnetic isolation cylinders are respectively installed on the first outer middle magnetic conductor, the second outer middle magnetic conductor and the third outer middle magnetic conductor; the first outer middle magnetic conductor is connected to the outer tail magnetic conductor; the third outer middle magnetic conductor is connected to the outer end magnetic conductor;

[0008] The core magnetic conductor device includes an inner head magnetic conductor, an inner tail magnetic conductor and an inner middle magnetic conductor; the inner middle magnetic conductor is sawtooth-shaped; the inner middle magnetic conductor is respectively connected to the inner head magnetic conductor and the inner tail magnetic conductor;

[0009] The inner central magnetic conductor includes a first inner central magnetic conductor, a second inner central magnetic conductor, and a third inner central magnetic conductor; a first inner magnetic isolation ring is installed between the first inner central magnetic conductor and the second inner central magnetic conductor; a second inner magnetic isolation ring is installed between the second inner central magnetic conductor and the third inner central magnetic conductor; conductive coils are respectively wound around the recesses of the first inner central magnetic conductor, the second inner central magnetic conductor, and the third inner central magnetic conductor, and an inner magnetic isolation cylinder is provided outside the conductive coil; the inner magnetic isolation cylinder corresponds to the outer magnetic isolation cylinder, and a gap is provided between them;

[0010] A pipe is provided in the center of the core magnetic conductive device, and a wire is passed through the pipe; one end of the wire is connected to the conductive coil, and the other end is connected to the external power supply;

[0011] An inner tail magnetic isolation sheet is fixed to the bottom recess of the inner tail magnetic conductor; an inner end magnetic isolation sheet is fixed to the end recess of the inner head magnetic conductor; the inner tail magnetic isolation cylinder is wrapped on the inner tail magnetic conductor; and the inner end magnetic isolation cylinder is wrapped on the inner head magnetic conductor.

[0012] Furthermore, an annular gasket is installed between the housing and the rear end cover.

[0013] Furthermore, the pipe is a corrugated pipe.

[0014] Furthermore, the inner magnetic isolation cylinder and the outer magnetic isolation cylinder have the same height and are parallel to each other.

[0015] Furthermore, the first outer magnetic isolation ring, the second outer magnetic isolation ring, the first inner magnetic isolation ring, and the second inner magnetic isolation ring have the same thickness.

[0016] Furthermore, the first outer isolation magnetic ring corresponds to the first inner isolation magnetic ring.

[0017] Furthermore, the second outer isolation magnetic ring corresponds to the second inner isolation magnetic ring.

[0018] The present invention has a simple structure and extends the service life of the cutter head through the damping motion of the central magnetic device. When the cutter head is operating, it vibrates as it cuts material. This vibration can be simplified as an up-and-down translational vibration. When the cutter head housing moves downward due to vibration, the central magnetic device maintains its position due to inertia, moving in the opposite direction relative to the outer housing. At this point, the central magnetic device exerts a counterforce on the housing, which reduces the vibration displacement. When the vibration increases, the coil is energized to generate a magnetic field, causing the magnetorheological fluid to solidify. The central magnetic device then exerts a greater counterforce on the housing, effectively controlling the vibration of the cutter head. When the cutter head moves upward due to vibration, the vibration reduction principle is the same as when the cutter head moves downward. When the cutter head swings in one direction, the central magnetic device swings in the opposite direction, offsetting the force generated by the swinging cutter head and achieving the purpose of vibration reduction. When the cutter head cuts different materials, the wire energizes the energized coil, making the magnetorheological fluid more viscous. The swing of the core magnetic device consumes more force to achieve a better damping effect, and the cutter head can suppress vibrations of different frequencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below. The embodiments of the present invention are only for illustrating a specific structure, and the scale of the structure is not limited by the embodiments.

[0022] See Figures 1 to 2 The magnetorheological damping and vibration reduction cutter head includes a shell 1, a rear end cover 2, a shell magnetic conductive device 3, a core magnetic conductive device 4 and a cutter head 5. The shell 1 is threadedly connected to the rear end cover 2; an annular gasket 6 is installed between the shell 1 and the rear end cover 2; the core magnetic conductive device 4 and the shell magnetic conductive device 3 are sequentially provided from the center of the shell 1 to the outside; the cutter head 5 is fixed to one end of the shell 1 by a screw 11; a gap is formed between the shell magnetic conductive device 3 and the core magnetic conductive device 4, and the gap is filled with magnetorheological fluid to form a magnetorheological damping channel 7.

[0023] The outer shell magnetic conductor 3 includes an outer head magnetic conductor 31, an outer tail magnetic conductor 32 and an outer middle magnetic conductor 33; the outer tail magnetic conductor 32 is located on the bottom of the outer shell 1; the outer head magnetic conductor 31 is located at the end of the outer shell 1; the two ends of the outer middle magnetic conductor 33 are respectively connected to the outer tail magnetic conductor 32 and the outer head magnetic conductor 31.

[0024] The outer middle magnetic conductor 33 includes a first outer middle magnetic conductor 331, a second outer middle magnetic conductor 332 and a third outer middle magnetic conductor 333; a first outer magnetic isolation ring 334 is installed between the first outer middle magnetic conductor 331 and the second outer middle magnetic conductor 332; a second outer magnetic isolation ring 335 is installed between the second outer middle magnetic conductor 332 and the third outer middle magnetic conductor 333; the first outer magnetic isolation ring 334 and the second outer magnetic isolation ring 335 have the same thickness.

[0025] Outer magnetic isolation tubes 336 are respectively installed on the first outer middle magnetic conductor 331, the second outer middle magnetic conductor 332 and the third outer middle magnetic conductor 333; the first outer middle magnetic conductor 331 is connected to the outer tail magnetic conductor 32; the third outer middle magnetic conductor 333 is connected to the outer end magnetic conductor 31.

[0026] The core magnetic conductive device 4 includes an inner head magnetic conductive body 43, an inner tail magnetic conductive body 41 and an inner middle magnetic conductive body 42; the inner middle magnetic conductive body is sawtooth-shaped; the inner middle magnetic conductive body 42 is respectively connected to the inner head magnetic conductive body 43 and the inner tail magnetic conductive body 41.

[0027] The inner central magnetic conductor 42 includes a first inner central magnetic conductor 421, a second inner central magnetic conductor 422, and a third inner central magnetic conductor 423. A first inner magnetic isolation ring 424 is installed between the first inner central magnetic conductor 421 and the second inner central magnetic conductor 422. A second inner magnetic isolation ring 425 is installed between the second inner central magnetic conductor 422 and the third inner central magnetic conductor 423. The first and second inner magnetic isolation rings 424, 425 have the same thickness and are parallel to each other. The first outer magnetic isolation ring 334 corresponds to the first inner magnetic isolation ring 424. The second outer magnetic isolation ring 335 corresponds to the second inner magnetic isolation ring 425.

[0028] Conductive coils 426 are wound around the recesses of the first inner middle magnetic conductor 421, the second inner middle magnetic conductor 422 and the third inner middle magnetic conductor 423, respectively. An inner magnetic isolation tube 427 is provided outside the conductive coil 426. The inner magnetic isolation tube 427 corresponds to the outer magnetic isolation tube 336 with a gap therebetween. The inner magnetic isolation tube 427 and the outer magnetic isolation tube 336 have the same height and are parallel to each other.

[0029] A bellows 8 is provided at the center of the core magnetic conductive device 4, and a wire 10 is passed through the bellows; one end of the wire is connected to the conductive coil 426, and the other end is connected to an external power supply.

[0030] An inner tail magnetic isolation sheet 411 is fixed to the bottom recess of the inner tail magnetic conductor 41; an inner end magnetic isolation sheet 431 is fixed to the end recess of the inner head magnetic conductor 43; the inner tail magnetic isolation tube 412 is wrapped around the inner tail magnetic conductor; and the inner end magnetic isolation tube 432 is wrapped around the inner head magnetic conductor.

[0031] A sealing ring 9 is installed at the connection between the outer tail magnetic conductor 32 and the bellows 8.

Claims

1. Magnetorheological damping vibration reduction cutter head, characterized by The invention comprises a shell, a rear end cover, a shell magnetic conductive device, a core magnetic conductive device, and a cutter head, wherein the shell is threadedly connected to the rear end cover; the core magnetic conductive device and the shell magnetic conductive device are sequentially provided from the center of the shell outward; the cutter head is fixed to one end of the shell by screws; a gap is formed between the shell magnetic conductive device and the core magnetic conductive device, and the gap is filled with magnetorheological fluid to form a magnetorheological damping channel; The shell magnetic conductive device includes an outer head magnetic conductive body, an outer tail magnetic conductive body and an outer middle magnetic conductive body; the outer tail magnetic conductive body is located on the bottom of the shell; the outer head magnetic conductive body is located at the end of the shell; the two ends of the outer middle magnetic conductive body are respectively connected to the outer tail magnetic conductive body and the outer head magnetic conductive body; The outer middle magnetic conductor includes a first outer middle magnetic conductor, a second outer middle magnetic conductor and a third outer middle magnetic conductor; a first outer magnetic isolation ring is installed between the first outer middle magnetic conductor and the second outer middle magnetic conductor; a second outer magnetic isolation ring is installed between the second outer middle magnetic conductor and the third outer middle magnetic conductor; outer magnetic isolation cylinders are respectively installed on the first outer middle magnetic conductor, the second outer middle magnetic conductor and the third outer middle magnetic conductor; the first outer middle magnetic conductor is connected to the outer tail magnetic conductor; the third outer middle magnetic conductor is connected to the outer end magnetic conductor; The core magnetic conductive device includes an inner head magnetic conductive body, an inner tail magnetic conductive body and an inner middle magnetic conductive body; the inner middle magnetic conductive body is sawtooth-shaped; the inner middle magnetic conductive body is respectively connected to the inner head magnetic conductive body and the inner tail magnetic conductive body; The inner central magnetic conductor comprises a first inner central magnetic conductor, a second inner central magnetic conductor and a third inner central magnetic conductor; a first inner magnetic isolation ring is installed between the first inner central magnetic conductor and the second inner central magnetic conductor; a second inner magnetic isolation ring is installed between the second inner central magnetic conductor and the third inner central magnetic conductor; the recesses of the first inner central magnetic conductor, the second inner central magnetic conductor and the third inner central magnetic conductor are respectively wound with conductive coils, and an inner magnetic isolation cylinder is provided outside the conductive coils; the inner magnetic isolation cylinder corresponds to the outer magnetic isolation cylinder, and a gap is provided between them; A pipe is provided at the center of the central core magnetic conductive device, and a wire is passed through the pipe; one end of the wire is connected to the conductive coil, and the other end is connected to an external power supply; An inner tail magnetic isolation sheet is fixed to the bottom recess of the inner tail magnetic conductor; an inner end magnetic isolation sheet is fixed to the end recess of the inner head magnetic conductor; the inner tail magnetic isolation tube is wrapped on the inner tail magnetic conductor; and the inner end magnetic isolation tube is wrapped on the inner head magnetic conductor.

2. The magnetorheological damping vibration reduction cutter head according to claim 1, characterized in that An annular gasket is installed between the shell and the rear end cover.

3. The magnetorheological damping vibration reduction cutter head according to claim 1, characterized in that The pipeline is a corrugated pipe.

4. The magnetorheological damping vibration reduction cutter head according to claim 1, characterized in that The inner magnetic isolation cylinder and the outer magnetic isolation cylinder have the same height and are parallel to each other.

5. The magnetorheological damping vibration reduction cutter head according to claim 1, characterized in that The thicknesses of the first outer magnetic isolation ring, the second outer magnetic isolation ring, the first inner magnetic isolation ring, and the second inner magnetic isolation ring are the same.

6. The magnetorheological damping tool head according to claim 1 or 5, characterized in that The first outer isolation magnetic ring corresponds to the first inner isolation magnetic ring.

7. The magnetorheological damping tool head according to claim 1 or 5, characterized in that The second outer isolation magnetic ring corresponds to the second inner isolation magnetic ring.

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