CN212918614U - Centrifugal sealing device for rotary cutting - Google Patents

Abstract

The utility model discloses a rotary cutting centrifugal sealing device, which comprises a fixed flange, a centrifugal block and an elastic ring; the periphery of mounting flange is equipped with the annular groove, the notch orientation of annular groove the mounting flange outside is a plurality of centrifugal piece is cyclic annular distribution and movably locates in the annular groove, the outside butt of centrifugal piece the elastic ring. The rotary cutting centrifugal sealing device is provided with an elastic ring, and the elastic ring is in a contraction state under a static state. When the device rotates at a speed higher than a certain rotating speed, the centrifugal block outwards props open the elastic ring under the action of centrifugal force, so that the elastic ring is enlarged and is in close contact with a workpiece to be sealed, thereby playing a sealing role and effectively preventing chips from entering the inside of the workpiece to be sealed.

Description

Centrifugal sealing device for rotary cutting

Technical Field

The utility model relates to a sealing device technical field especially relates to a rotatory centrifugal sealing device that cuts.

Background

The arrival of industry 4.0, the less humanization of machining field, unmanned, intelligent orientation development, the loading and unloading to the work piece needs convenient, high-efficient, safe and reliable. The workpiece processing not only needs to meet the drawing requirements, but also needs clean processing working conditions, and the pollution to the environment during processing is reduced to the maximum extent.

In the rotary cutting process, a large amount of chips are generated, and the chips easily enter the workpiece to contaminate the workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cutting centrifugal sealing device can effectively avoid the smear metal to enter into inside the work piece.

In order to realize the technical purpose, the utility model provides a following technical scheme:

a rotary cutting centrifugal sealing device comprises a fixed flange, a centrifugal block and an elastic ring; the periphery of mounting flange is equipped with the annular groove, the notch orientation of annular groove the mounting flange outside is a plurality of centrifugal piece is cyclic annular distribution and movably locates in the annular groove, the outside butt of centrifugal piece the elastic ring.

As a further preferable scheme, the periphery of the fixed flange is provided with a first convex ring and a second convex ring positioned above the first convex ring, the outer diameter of the second convex ring is smaller than that of the first convex ring, and the annular groove is formed between the first convex ring and the second convex ring;

as a further preferable scheme, a limiting groove for accommodating the elastic ring is arranged on the outer side of the centrifugal block.

As a further preferred scheme, still include a solid fixed ring, cup joint mounting flange and with mounting flange is fixed, gu fixed ring's bottom surface is equipped with the boss of spacing centrifugal block, the elastic ring is located the boss with between the first bulge loop.

As a further preferred scheme, the centrifugal block is provided with a first step and a second step arranged on the inner side of the top surface of the first step, the top surface of the first step is lower than the bottom surface of the boss, and the second step is arranged on the inner side of the boss.

As a further preferable scheme, the inner side of the lower end of the fixing ring is provided with an annular groove matched with the first convex ring.

As a further preferable scheme, the fixing ring is fixed to the fixing flange by a screw, and a countersunk hole for mounting the screw is formed in the circumferential direction of the fixing ring.

As a further preferred solution, the first protruding ring is located at the bottom of the fixing flange.

As a further preferred solution, the fixing flange comprises two semicircular structures which are matched with each other.

The rotary cutting centrifugal sealing device is fixed with a part to be sealed, when the device rotates at a speed higher than a certain rotating speed, the centrifugal block outwards props the elastic ring under the action of centrifugal force, the elastic ring is enlarged and is in close contact with the workpiece to be sealed, chips are prevented from entering the inside of the workpiece to be sealed, and the device is used for machining inner holes of disc type, cylinder type and ring type parts on a lathe.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

the rotary cutting centrifugal sealing device is provided with an elastic ring, and the elastic ring is in a contraction state under a static state. When the device rotates at a speed higher than a certain rotating speed, the centrifugal block outwards props open the elastic ring under the action of centrifugal force, so that the elastic ring is enlarged and is in close contact with a workpiece to be sealed, thereby playing a sealing role and effectively preventing chips from entering the inside of the workpiece to be sealed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of a centrifugal sealing device for rotary cutting according to the present invention;

FIG. 2 is an exploded view of a rotary cutting centrifugal seal according to the present invention;

fig. 3 is a front view of the fixing flange of the present invention;

FIG. 4 is a cross-sectional view of the retaining ring of the present invention;

FIG. 5 is a schematic view of a rotary cutting centrifugal seal of the present invention mounted on a workpiece;

in the figure, a fixed flange 1; a first male ring 11; an annular groove 12; a second convex ring 13; a top ring 14; set screw hole site 15; a set screw 16; a pin 17; a fixed ring 2; a counterbore 21; a boss 22; an annular groove 23; a screw 24; an elastic ring 3; a centrifugal block 4; a first step 41; a limit groove 411; a second step 42; a rear end cap 101; a central axis 102.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1-5, the present embodiment provides a rotary cutting centrifugal sealing device, which can be used in a lathe for machining inner holes of disc-type, cylinder-type, and ring-type parts. The device comprises a fixed flange 1, a centrifugal block 4, an elastic ring 3 and a fixed ring 2. Wherein, the periphery of fixed flange 1 is equipped with annular groove 12, and the notch of annular groove 12 is towards the outside of fixed flange 1. The centrifugal blocks 4 are movably arranged in the annular groove 12, and the outer sides of the centrifugal blocks 4 are abutted to the elastic ring 3. The fixing ring 2 is sleeved with the fixing flange 1 and fixed with the fixing flange.

Referring to fig. 3, the inner side of the fixing flange 1 is a circular through hole for receiving the central shaft 102 of the workpiece. A first convex ring 11, a second convex ring 13 and a top ring 14 are sequentially arranged on the periphery of the fixed flange 1 from bottom to top, the outer diameter of the second convex ring 13 is smaller than that of the first convex ring 11, and an annular groove 12 is formed between the first convex ring 11 and the second convex ring 13; the outer diameter of the top collar 14 is smaller than the outer diameter of the second collar 13 and larger than the diameter of the annular groove 12. The top ring 14 is provided with a plurality of screw hole positions 15, and a set screw 16 passes through the screw hole positions 15 and is locked and fixed with a central shaft 102 of the workpiece.

In this embodiment, the fixing flange 1 includes two half-circle structures that mate with each other, and the two half-circle structures are designed because the parts connected to the fixing flange are structurally limited in some cases, so that the fixing flange meets the assembly requirement. In other embodiments, the fastening flange 1 may also be designed as a unitary structure.

Referring to fig. 4, the bottom surface of the fixing ring 2 is flush with the bottom surface of the second protruding ring 13, a boss 22 extending downward is disposed on the outer side of the bottom surface of the fixing ring 2, and the elastic ring 3 is located between the boss 22 and the first protruding ring 11. The lower end inner side of the fixing ring 2 is provided with an annular groove 23 matched with the first convex ring 11, so that the fixing ring 2 and the fixing flange 1 are conveniently aligned. The fixing ring 2 is locked and fixed with the top ring 14 of the fixing flange 1 through a screw 24, and a countersunk hole 21 for mounting the screw 24 is formed in the peripheral direction of the fixing ring 2.

As shown in fig. 2, a plurality of centrifugal blocks 4 are distributed in a ring shape. Each centrifugal block 4 is arc-shaped, the centrifugal block 4 is provided with a first step 41 positioned on the outer side and a second step 42 positioned on the inner side, the top surface of the first step 41 is lower than the bottom surface of the boss 22, the outer side surface of the first step 41 is provided with a limiting groove 411 for accommodating the elastic ring 3, and the limiting groove 411 is arranged to prevent the elastic ring 3 from separating from the centrifugal block 4. The second step 42 is located inside the boss 22, and a certain distance is left between the outer side surface of the second step and the inner side surface of the boss 22 to reserve a moving space for the centrifugal block 4. When the device rotates, the centrifugal block 4 shifts outwards (away from the central axis of the fixing ring), and the boss 22 plays a role of stopping the second step 42, so that the centrifugal block 4 is prevented from moving outwards excessively. The inner side of at least one centrifugal block 4 is provided with a positioning groove, and the fixed flange 1 is provided with a pin shaft 17 matched with the positioning groove to limit the circumferential position of the centrifugal block 4.

The hardness and the tensile rate of the elastic ring 3 need to be calculated according to centrifugal force, a standard O-shaped ring can be selected, the standard O-shaped ring can also be used for shearing and bonding, and the outer diameter of the elastic ring 3 is larger than that of the fixing ring 2. The elastic ring 3 can be made of rubber material

Referring to fig. 2 and 5, when assembling the rotary cutting centrifugal sealing device, the two semicircular structures are assembled into the fixed flange 1, then the centrifugal block 4 is placed into the annular groove 12 of the fixed flange 1, and after the annular groove 23 of the fixed ring 2 is attached to the second convex ring 13 of the fixed flange 1, the hexagon socket head cap screw 24 is installed to lock the fixed ring 2 on the fixed flange 1. At the moment, the centrifugal block 4 is in a movable state, then, the elastic ring 3 is sleeved on the centrifugal block 4, due to the tightening action of the elastic ring 3, the centrifugal block 4 is abutted against the inner side surface of the annular groove 23, at the moment, the elastic ring 3 is in a contraction state, a gap is reserved between the elastic ring and a groove position of the workpiece rear end cover 101, and the device can be conveniently installed in a workpiece. The entire assembly is then secured to the central shaft 102 of the part to be sealed by the set screw 16. The assembly mode is simple and efficient.

The rotary cutting centrifugal sealing device is fixed with a part to be sealed, and a certain gap is reserved between the elastic ring 3 and the rear end cover 101. When the device rotates at a speed higher than a certain rotating speed, the centrifugal block 4 outwards props the elastic ring 3 under the action of centrifugal force, so that the elastic ring 3 is enlarged and is in close contact with a workpiece to be sealed, chips are prevented from entering the inside of the workpiece to be sealed through the rear end cover 101, the effect of clean cutting is achieved, and the labor amount of subsequent cleaning of the workpiece can be reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A rotary cutting centrifugal sealing device is characterized by comprising a fixed flange, a centrifugal block and an elastic ring; the periphery of mounting flange is equipped with the annular groove, the notch orientation of annular groove the mounting flange outside is a plurality of centrifugal piece is cyclic annular distribution and movably locates in the annular groove, the outside butt of centrifugal piece the elastic ring.

2. The rotary cutting centrifugal sealing device according to claim 1, wherein the centrifugal block is provided with a limiting groove on the outer side for accommodating the elastic ring.

3. The rotary cutting centrifugal seal assembly according to claim 1, wherein the periphery of said mounting flange is provided with a first annular projection and a second annular projection located above said first annular projection, the second annular projection having an outer diameter smaller than the outer diameter of said first annular projection, said first annular projection and said second annular projection defining said annular groove therebetween.

4. The rotary cutting centrifugal sealing device according to claim 3, further comprising a fixing ring sleeved on and fixed with a fixing flange, wherein a boss for limiting the centrifugal block is arranged on the bottom surface of the fixing ring, and the elastic ring is located between the boss and the first convex ring.

5. The rotary cutting centrifugal seal device according to claim 4, wherein the centrifugal block is provided with a first step and a second step arranged inside the top surface of the first step, the top surface of the first step is lower than the bottom surface of the boss, and the second step is arranged inside the boss.

6. The rotary cutting centrifugal seal apparatus of claim 4, wherein the inner side of the lower end of the fixing ring is provided with an annular groove for engaging the first male ring.

7. The rotary cutting centrifugal seal device according to claim 4, wherein the fixing ring is fixed to the fixing flange by a screw, and a countersunk hole for mounting the screw is formed in the circumferential direction of the fixing ring.

8. A rotary cutting centrifugal seal according to claim 3, wherein said first raised ring is located at the bottom of said mounting flange.

9. The rotary cutting centrifugal seal of claim 1, wherein said mounting flange comprises two mating semi-circular configurations.

Images