KR101843281B1 - Sensor of detecting flow - Google Patents

Abstract

The flow rate sensor includes a housing, a rotating rotor, a slit rotating part, and a sensing control part. The housing includes an inlet through which the cutting oil flows, an outlet through which the cutting oil is discharged, an inner space through which the inlet and the outlet communicate with each other, and first and second sidewalls facing each other. The rotating rotor is disposed on the first sidewall and is supported by the first rotating shaft and includes a first magnet unit. The slit rotating portion is disposed on the second sidewall and includes a second magnet unit, and rotates in conjunction with the rotation of the rotating rotor by attraction by the first and second magnetic fields. The flow rate sensor includes an encoder for sensing and measuring coolant information from the rotation of the slit rotary part, a communication unit for wirelessly transmitting coolant information, and a power unit for supplying power to the encoder and the communication unit.

Description

SENSOR OF DETECTING FLOW [0002]

The present invention relates to a flow velocity sensor. More particularly, the present invention relates to a flow rate sensor for sensing a flow of cutting fluid used in a machine tool.

The cutting oil used in the machine tool can perform the lubrication action between the cutting tool and the workpiece, and the cooling function of the cutting tool and the workpiece. Specifically, the coolant may be injected between the cutting tool and the workpiece, and then recirculated by the coolant recovery device, and then re-injected between the cutting tool and the workpiece.

The cutting oil may include a plurality of closed chips and sludge generated after machining, and these foreign substances may interfere with the flow of the cutting oil and degrade the lubrication and cooling performance. In addition, when the flow path through which the cutting oil flows is clogged by the foreign matter, there arises a problem that productivity loss caused by stopping the operation of the machine tool and failure of the coolant recovery device occur.

Therefore, it is necessary to remove the closed chips and the sludge contained in the cutting oil through the sensor for sensing the flow of the cutting oil, or replace the filter. However, the conventional sensor is disposed on the path of the cutting oil, Or the malfunctions and faults frequently occur due to the closed chips and the sludge, resulting in a problem that operational reliability is deteriorated.

An object of the present invention is to provide a flow velocity sensor having improved operational reliability.

It is to be understood that the invention is not limited to the disclosed exemplary embodiments and that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

In order to achieve the above object, the flow rate sensor according to exemplary embodiments of the present invention includes a housing, a rotating rotor, a slit rotating part, and a sensing control part. Wherein the housing extends in a first direction and has an inlet through which the cutting oil flows, an outlet extending in the first direction and discharging the cutting oil, and a second outlet communicating the inlet and the outlet with each other and extending in a second direction intersecting the first direction And first and second sidewalls extending in the second direction and facing each other. Wherein the rotary rotor is supported by a first rotary shaft disposed on the first side wall and projecting toward the inner space in a third direction intersecting with the first and second directions, And a first magnet unit that rotates about the first rotation axis by the flow of the cutting oil flowing into the first sidewall and forms a first magnetic field toward the second sidewall. Wherein the slit rotation portion is supported by a second rotation axis disposed on the second sidewall and protruding outward in the third direction, and a second magnetic field corresponding to the first magnetic field toward the second sidewall, And includes a magnet unit, and rotates in conjunction with rotation of the rotating rotor by attraction by the first and second magnetic fields. Wherein the flow rate sensor is disposed in the third direction from the slit rotary part and includes an encoder for sensing and measuring coolant information from rotation of the slit rotary part, a communication unit for wirelessly transmitting the coolant information, And a power supply unit for supplying power to the power supply unit.

In the exemplary embodiments, the rotating rotor may include a rotating rotor body having a cylindrical shape opened in the third direction, spaced from the outer circumferential surface of the rotating rotor body, and having a first radial direction A plurality of guide members spaced apart from each other on an inner circumferential surface of the rotating rotor body and extending along the third direction and each projecting in a direction opposite to the first radial direction, A first fixing groove which is attached to the rotor body and rotates together with the rotating rotor body and to which the first magnet unit is fixed and a second fixing groove which is fixed to the rotor body by the attraction force by the first and second magnetic fields, A plurality of stones projecting along the first radial direction and being inserted into the respective guide members so as to be movable along the opposite direction, It may further include a moving unit comprising the parts.

In exemplary embodiments, the housing may further include a bottom connecting the first and second sidewalls to each other, and a bracket attached to the bottom and extending toward the interior space in a direction opposite to the second direction have. The first rotation axis may be disposed on the bracket and protrude along the third direction.

In exemplary embodiments, the slit rotating portion may further include a plurality of slits arranged respectively in a second radial direction around the second rotation axis, and a second fixing groove to which the second magnet unit is fixed have.

In exemplary embodiments, the encoder may include a photosensor that emits light to each of the slits and senses the emitted light. The encoder may sense the coolant information from the emitted light sensed by the photosensor. The cutting oil information may include a flow rate of the cutting oil and a speed of the cutting oil.

In the exemplary embodiments, the sensing control unit may further include a power generation unit electrically connected to the slit rotation unit and generating power by rotation of the slit rotation unit. The power unit may include a battery, which is electrically connected to the power generation unit and stores power generated by the power generation unit.

In exemplary embodiments, the auxiliary housing may further include a secondary housing attached to the second sidewall to cover and accommodate the slit rotation portion and the sensing control portion.

As described above, the flow velocity sensor according to the exemplary embodiments of the present invention is interlocked with the rotation of the rotating rotor at the outside of the housing by the rotating rotor and the first and second magnet units rotating by the flow of the cutting oil The flow of the cutting oil can be sensed by using the rotating slit rotating part.

Since the slit rotation part is rotated by the magnetic force from the outside of the housing, there is no fear that the cutting oil leaks to the outside, and the operation reliability of the sensing control part disposed at the upper part of the slit rotation part can be secured.

Particularly, since the first and second magnet units can be closely contacted with each other by the magnetic force through the movable unit including the first magnet unit inserted into the rotating rotor body and movable up and down , The rotational interlocking of the slit rotating part with respect to the rotation of the rotating rotor can be ensured.

In addition, since the battery disposed in the power unit can be charged from the power generating unit that is generated by the rotation of the slit rotating unit, there is no need for an external power source, and a compact flow velocity sensor can be realized.

1 is an exploded perspective view showing a flow velocity sensor according to exemplary embodiments.
FIG. 2 is an assembled perspective view showing the bracket of FIG. 1 and a rotating rotor mounted on the bracket.
3 is an exploded perspective view showing the bracket of FIG. 2 and the rotating rotor mounted on the bracket.
FIG. 4 is an assembled perspective view illustrating the housing and the slit rotating unit of FIG. 1;
5 is a side view showing a rotating rotor and a slit rotating part viewed from a first direction.
FIG. 6 is a block diagram showing the sensing control unit of FIG. 1. FIG.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprise", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be construed as meaning consistent with meaning in the context of the relevant art and are not to be construed as ideal or overly formal in meaning unless expressly defined in the present application .

1 is an exploded perspective view showing a flow velocity sensor according to exemplary embodiments. FIG. 2 is an assembled perspective view showing the bracket of FIG. 1 and a rotating rotor mounted on the bracket. 3 is an exploded perspective view showing the bracket of FIG. 2 and the rotating rotor mounted on the bracket. FIG. 4 is an assembled perspective view illustrating the housing and the slit rotating unit of FIG. 1; 5 is a side view showing a rotating rotor and a slit rotating part viewed from a first direction. FIG. 6 is a block diagram showing the sensing control unit of FIG. 1. FIG.

1 to 6, the flow velocity sensor according to exemplary embodiments includes a housing 100, a rotary rotor 200, a slit rotation unit 300, a sensing control unit 400, and an auxiliary housing 500 can do.

The housing 100 extends in a first direction D1 and includes an inlet 110 through which the cutting oil flows, an outlet 120 through which the cutting oil is discharged in a first direction D1 and an outlet 120 through which the inlet 100 and the outlet 120 extending in a second direction D2 and extending in a second direction D2 intersecting the first direction D1, first and second sidewalls extending in a second direction D2, 102, 104 and the bottom 106 connecting the first and second sidewalls 102, 104 to one another.

The housing 100 receives the rotating rotor 200 to be described later and the inner space 130 in which the rotating rotor 200 is rotated by the flow of the cutting oil through which the cutting oil is discharged from the inlet 100 through the outlet 120 ). ≪ / RTI >

The housing 100 further includes a gasket groove 108 and a gasket (not shown) for preventing the cutting oil from leaking through the first and second sidewalls 102, 104 and the bottom 106 .

The first and second sidewalls 102 and 104 may be spaced apart in a third direction D3 that extends in a second direction D2 and intersects the first and second directions D1 and D2, And the first and second sidewalls 102 and 104 can be connected by the bottom 106. [ For example, the first and second directions D1 and D2 may be orthogonal to each other, and the second and third directions D2 and D3 may be orthogonal to each other.

The rotary rotor 200 may be supported by a first rotary shaft 210 disposed on the first side wall 102 and projecting toward the inner space 130 in a third direction D3. The rotary rotor 200 rotates about the first rotary shaft 210 by the flow of the cutting oil accommodated in the inner space 130 and flows in the first direction D1, And a first magnet unit 220 that forms one magnetic field.

The first magnet unit 220 may be disposed in a first fixing groove 264 described later to form the first magnetic field toward the second side wall 104. For example, a plurality of first magnet units 220 may be provided and an N pole magnetic field may be formed. Alternatively, the first magnet unit 220 may form an S pole magnetic field. Further, the first magnet unit 220 may include a permanent magnet.

Specifically, the rotating rotor 200 includes a rotating rotor body 230 having a cylindrical shape opened in the third direction D3, a plurality of blades 240, guide members 250, and a moving unit 260 .

The rotating rotor body 230 can be rotated by the flow along the first direction D1 of the cutting oil and can be mounted to the first rotating shaft 210 through the first bearing 232. [ The rotating rotor body 230 is attached to a moving unit 260 to be described later so that the rotating rotor body 230 and the moving unit 260 can rotate together.

The blades 240 may be spaced apart from each other on the outer circumferential surface of the rotor rotor body 230 and extend in the first radial direction around the first rotation axis 210. The blades 240 are disposed on the path of the coolant and can be rotated by the flow of the coolant.

The guide members 250 may be spaced apart from each other on the inner circumferential surface of the rotating rotor body 230 and may extend in the third direction D3 and protrude in the opposite direction from the first radial direction.

The guide members 250 guide the protrusions 266 to guide the moving unit 260 to move in the direction opposite to the third direction D3 or the third direction D3.

5, the mobile unit 260 is attached to the rotating rotor body 230 and rotates together with the rotating rotor body 230, and a first fixing groove 264 (see FIG. 5) in which the first magnet unit 220 is fixed (Magnetic force) generated by the first magnetic field formed by the first magnet unit 220 and the second magnetic field formed by the second magnet unit 320 described later and the third direction D3 or the third direction (D3).

Specifically, the mobile unit 260 may include a plurality of protrusions 266 inserted into and guided in the respective guide members 250 and protruding along the first radial direction. The moving unit 260 may be mounted on the first rotating shaft 210 through the second bearing 262 so that the moving unit 260 can smoothly rotate around the first rotating shaft 210.

The rotary shaft 200 may be mounted to the first rotary shaft 210 through a first coupling member 270. The first coupling member 270 may include a second bearing 262, A bush 272 connecting the first and second bearings 232 and 262 and the first bearing 232 to the first rotation shaft 210.

The housing 100 may further include a bracket 140 attached to the bottom 106 and extending toward the interior space 130 in a direction opposite to the second direction D2. The first rotation axis 210 may be disposed on the bracket 140 and protrude along the third direction D3.

The slit rotating part 300 is supported by a second rotating shaft 310 disposed on the second side wall 104 and protruding outward in a third direction D3, And a second magnet unit 320 forming the second magnetic field corresponding to the second magnetic field. In addition, the slit rotating part 300 can rotate in conjunction with the rotation of the rotating rotor 200 by attraction (magnetic force) by the first and second magnetic fields.

The second magnet unit 320 may be disposed in a second fixing groove 324 described later to form the second magnetic field toward the second side wall 104. For example, a plurality of second magnet units 320 may be provided, and when the first magnet unit 220 forms an N pole magnetic field, the second magnet unit 320 may form an S pole magnetic field . Alternatively, when the first magnet unit 220 forms an S pole magnetic field, the second magnet unit 320 may form an N pole magnetic field. Further, the second magnet unit 320 may include a permanent magnet.

The rotating rotor 200 and the slit rotating unit 300 can rotate in conjunction with each other by attraction (magnetic force) by the first and second magnetic fields. The moving unit 260 of the rotating rotor 200 can also be moved by the attracting force toward the second side wall 104 along the third direction D3 by the protrusions 266 and the guide members 250 have. Accordingly, there is an advantage that the rotational interlocking of the rotating rotor 200 and the slit rotating part 300 can be assured.

More specifically, the slit rotation unit 300 includes a plurality of slits 330 arranged in the second radial direction around the second rotation axis 310, and a plurality of second fixing grooves 324 ). ≪ / RTI >

The slit rotating part 300 may be mounted on the second rotary shaft 310 through the third bearing 312 and the second fastening hole 340 may pass through the third bearing 312 to rotate the second rotary shaft 310 As shown in Fig. Accordingly, the slit rotation part 300 can be mounted on the second rotation shaft 310. [

The slits 300 can pass the light emitted by the photosensors 412 and 414 of the encoder 410 to be described later so that the encoder 410 can transmit the light emitted from the slit rotating part 300 and the rotating rotor 200 Rotation can be detected.

The sensing control unit 400 includes an encoder 410 disposed in the third direction D3 from the slit rotating unit 300 and sensing and measuring cutting oil information from the rotation of the slit rotating unit 300, A communication unit 420 and a power supply unit 430 for supplying power to the encoder 410 and the communication unit 420. [

The encoder 410 may include photo sensors 412 and 414 that emit light to each of the slits 330 and sense the emitted light. For example, the photo sensors 412 and 414 may be arranged to face each other with the slit rotating part 300 facing each other about the second rotation axis 310, and some of the photosensors 412 and 414 (412) emits the light, and some sensors (414) can sense light passing through the slits (330).

In addition, the encoder 410 may sense the coolant information using the sensors 412 and 414. For example, the light sensed by the sensor 414 is converted into an electrical signal, and the encoder 410 counts the number of the electrical signals to sense and measure the coolant information. For example, the coolant information may include a flow rate of the coolant and a speed of the coolant.

The communication unit 420 may transmit the coolant information wirelessly to a terminal (not shown). For example, the terminal may include a personal computer, a smart phone, a server, and the like, and the user can confirm the coolant information through the terminal.

For example, the communication unit 420 may transmit the coolant information to the terminal using a wireless communication method such as WIFI, RFID, or BLUETOOTH.

The power unit 430 can supply power to the encoder 410 and the communication unit 420. The power unit 430 can be electrically connected to an external power source to receive the power. Alternatively, the power source unit 430 may include a battery for storing the power source.

In the exemplary embodiments, the sensing control unit 400 may further include a power generation unit 440 electrically connected to the slit rotation unit 300 and generating power by rotation of the slit rotation unit 300. For example, a power generation coil (not shown) is wound around the slit rotation part 300 along the third direction D3 to insert the power generation magnet into the slit rotation part 300, And a current generated by the power generation coil is generated as the power source by being electrically connected to the power generation coil. For example, the power generation unit 440 may include a rectifying circuit for rectifying the current, and the power generation unit 440 may be electrically connected to the battery of the power supply unit 430.

The flow sensor may further include an auxiliary housing 500 attached to the second sidewall 104 and adapted to cover and receive the slit rotation unit 300 and the sensing control unit 400. In the exemplary embodiment,

The flow rate sensor according to the exemplary embodiments of the present invention may include a rotating rotor 200 rotated by the flow of the cutting oil and a plurality of first and second magnet units 220 and 320, The flow of the coolant can be sensed by using the slit rotating unit 300 rotated in conjunction with the rotation of the rotating rotor 200. [

Since the slit rotating part 300 rotates by the attraction force (magnetic force) from the outside of the housing 100, the operation of the sensing control part 400 disposed adjacent to the slit rotating part 300 without concern that the cutting oil leaks to the outside Reliability can be secured.

Particularly, the first and second magnet units 220 and 320 are inserted into the rotating rotor body 230 and movable in the third direction D3 through the mobile unit 260 including the first magnet unit 220 Can be brought into close contact with the second side wall 104 by the magnetic force so that the rotational interlocking of the slit rotating part 300 with respect to the rotation of the rotating rotor 200 can be ensured.

Further, since the battery disposed in the power source unit 430 can be charged from the power generating unit 440 generated by the rotation of the slit rotating unit 300, a separate external power source is not required, and the implementation of a compact flow velocity sensor There are advantages.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It can be understood that.

100: housing 102: first side wall
104: second side wall 106: bottom
110: inlet 120: outlet
130: inner space 140: bracket
200: rotating rotor 210: first rotating shaft
220: first magnet unit 230: rotating rotor body
232: first bearing 240: blade
250: guide member 260: mobile unit
262: second bearing 264: first fixing groove
266: protrusion 270: first fastener
300: slit rotation part 310: second rotation axis
312: third bearing 320: second magnet unit
330: slit 340: second fastener
400: detection control unit 410: encoder
412, 414: Photoelectric sensor 420: Communication unit
430: power source unit 440: power source unit
500: auxiliary housing

Claims (7)

An inner wall extending in a first direction and extending in a second direction that communicates the inlet and the outlet with each other and intersects the first direction, an inlet port through which the coolant flows, a discharge port extending in the first direction and discharging the coolant, And a housing including first and second sidewalls extending in the second direction and facing each other;
And a second rotation axis which is supported by the first rotation axis which is disposed on the first side wall and protrudes toward the inner space in a third direction intersecting with the first and second directions, A first magnet unit rotating about the first rotation axis by a flow of cutting oil and forming a first magnetic field toward the second side wall;
And a second magnet unit disposed on the second sidewall and supported by a second rotation shaft protruding outward in the third direction and forming a second magnetic field corresponding to the first magnetic field toward the second sidewall A slit rotating part that rotates in conjunction with rotation of the rotating rotor by attraction by the first and second magnetic fields; And
An encoder disposed in the third direction from the slit rotating part for sensing and measuring coolant information from the rotation of the slit rotating part; a communication unit for wirelessly transmitting the coolant information; and a controller for supplying power to the encoder and the communication unit And a detection control unit including a power unit,
The rotating rotor includes:
A rotating rotor body mounted on the first rotating shaft and having a cylindrical shape opened in the third direction;
A plurality of blades disposed on a path of the cutting oil and spaced apart from each other on an outer circumferential surface of the rotary rotor body and each extending in a first radial direction around the first rotary shaft;
A plurality of guide members spaced apart from each other on an inner circumferential surface of the rotating rotor body and extending along the third direction and protruding in a direction opposite to the first radial direction; And
A first fixing groove which is attached to the rotating rotor body and rotates together with the rotating rotor body and to which the first magnet unit is fixed and a second fixing groove which is fixed by the attraction by the first and second magnetic fields, Further comprising: a moving unit including a plurality of protrusions inserted into and guided by the respective guide members so as to be movable along opposite directions of the three directions, and protruding along the first radial direction. delete 2. The apparatus of claim 1, wherein the housing further comprises a bottom connecting the first and second sidewalls, and a bracket attached to the bottom and extending toward the interior space in a direction opposite to the second direction,
Wherein the first rotation axis is disposed on the bracket and protrudes along the third direction. 2. The apparatus according to claim 1, wherein the slit-
A plurality of slits arranged respectively in a second radial direction around the second rotation axis; And
Further comprising a second fixing groove to which the second magnet unit is fixed. 5. The apparatus of claim 4, wherein the encoder includes a photosensor that emits light to each of the slits and senses the emitted light,
Wherein the encoder senses the coolant information from the emitted light sensed by the photosensor,
Wherein the coolant information includes a flow rate of the coolant and a speed of the coolant. [2] The apparatus according to claim 1, wherein the sensing control unit further includes a power generating unit electrically connected to the slit rotating unit and generating power by rotation of the slit rotating unit,
Wherein the power unit includes a battery electrically connected to the power generation unit and storing power generated by the power generation unit. The flow sensor of claim 1, further comprising an auxiliary housing attached to the second sidewall to cover and receive the slit rotation part and the sensing control part.

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