TWI572449B - Nanofluid minimal quantity lubrication device - Google Patents

Description

Nano fluid micro lubrication equipment

The present invention relates to a micro-lubrication apparatus, and more particularly to a nano-fluid lubrication apparatus for providing a cutting spray containing nano particles.

The lubrication methods in the current grinding process can be roughly divided into wet lubrication, dry lubrication and semi-dry lubrication. The wet lubrication is the effect of spraying a large amount of cutting fluid to the grinding position to achieve lubrication cooling when the grinding wheel is grinding, but The amount of wet-lubricating cutting fluid used is between several liters and several tens of liters per minute. Not only is the cost of the cutting fluid high, but it also imposes an environmental burden, and the debris generated by cutting is also required to be wet. In addition to the high temperature of the grinding wheel when cutting with wet lubrication, the cutting is often accompanied by smoke, which causes the health of the operator to be affected. Therefore, in consideration of cutting cost, health and environmental protection, The rapid development of grinding abrasives and dry lubrication have become another option for grinding. However, due to the lack of cutting fluid in the dry cutting, it is easy to cause the grinding wheel to wear too fast, the surface precision is not good, and the processing temperature is too high. A high problem occurs.

In view of the above problems caused by dry and wet lubrication, a semi-dry lubrication, that is, Minimal Quantity Lubrication, has been proposed to solve the problem of excessive use of cutting fluid in wet lubrication and excessive wear of the grinding wheel in dry lubrication. The micro-lubrication is achieved by atomizing a very small amount of cutting fluid by high-pressure gas, and then spraying the atomized cutting fluid to the cutting position to achieve excellent lubrication and cooling effect. The amount of cutting fluid used for micro-lubrication is only required per hour. Between several milliliters and tens of milliliters, and after atomizing the cutting fluid, the nanofluid can effectively improve the heat transfer coefficient of the cutting fluid, and can improve the roughness of the cutting surface and reduce the grinding force during the cutting process. However, since the micro-lubrication uses only a small amount of cutting fluid for lubrication cooling, the cooling effect is limited, so that the surface of the workpiece may be scorched.

The invention generates oscillation by the amplitude rod of the oscillating device, so that the nano particles contained in the cutting liquid containing the nano particles of the oil cup can be evenly distributed, thereby providing a cutting spray containing nano particles, thereby greatly improving The lubrication and cooling effect of the cutting spray, in order to avoid the occurrence of scorching on the surface of the grinding workpiece.

The invention relates to a nano-fluid micro-lubricating device for providing a cutting spray containing nano particles, wherein the nano-fluid lubricating device comprises an oil feeding device and an oscillating device, the oil feeding device having an oil cup and an oil a mist mixer having an accommodating space, the oil mist mixer having a chamber communicating with the accommodating space of the oil cup, the accommodating space of the oil cup accommodating a nanoparticle containing a cutting fluid, the oscillating device has an amplitude rod and an oscillator, the amplitude rod has a fixed end and an oscillating end, the oscillator is coupled to the fixed end of the amplitude rod, and the oscillating end of the amplitude rod is located at the In the cutting fluid containing nano particles.

According to the present invention, the amplitude rod of the vibrating device is located in the cutting fluid containing the nano particles, and the cavitation generated by the oscillation enables the nano particles in the cutting liquid containing the nano particles to be uniformly dispersed, and The oil mist mixer mixes the cutting liquid containing the nano particles and the high pressure gas, and ejects the cutting jet to form the nanometer-containing cutting spray, and the cooling of the nanoparticle-containing cutting spray can effectively reduce the cutting. The temperature is avoided to avoid burning of the workpiece and prolong the life of the grinding wheel.

100‧‧‧Nano fluid micro-lubrication equipment

110‧‧‧oil supply unit

111‧‧‧ oil cup

111a‧‧‧ accommodating space

111b‧‧‧ bottom

111c‧‧‧ oil hole

111d‧‧‧Filter

111e‧‧‧ top

111f‧‧‧ openings

111g‧‧‧ cup lid

111h‧‧‧Perforation

112‧‧‧Oil mist mixer

112a‧‧‧室

113‧‧‧Air filter

114‧‧‧Solenoid valve

115‧‧‧frequency modulator

120‧‧‧Oscillator

121‧‧‧amplitude rod

121a‧‧‧ fixed end

121b‧‧‧Oscillation end

121c‧‧‧ opening

122‧‧‧Oscillator

122a‧‧‧through holes

122b‧‧‧Oscillating components

122c‧‧‧electrode

123‧‧‧Fixed parts

123a‧‧‧through hole

123b‧‧‧ sidewall

123c‧‧‧ joint slot

124‧‧‧Connected parts

125‧‧‧Insulating sleeve

130‧‧‧Fixed devices

131‧‧‧ Mounting

131a‧‧‧floor

131b‧‧‧立板

131c‧‧‧ connection pad

131d‧‧‧ guiding slot

132‧‧‧Mobile board

132a‧‧‧Combined perforation

132b‧‧‧ Combined tying

133‧‧‧Support frame

133a‧‧‧first cantilever

133b‧‧‧second cantilever

133c‧‧‧stop plate

L‧‧‧Cutting fluid containing nano particles

H‧‧‧bond hole

S‧‧‧ combined space

D‧‧‧ spacing

Figure 1 is a perspective assembled view of a nanofluidic micro-lubrication apparatus in accordance with an embodiment of the present invention.

Figure 2 is an exploded perspective view of the nanofluidic micro-lubrication apparatus in accordance with an embodiment of the present invention.

Figure 3 is a partial cross-sectional view of the nanofluidic micro-lubrication apparatus in accordance with an embodiment of the present invention.

Figure 4 is an exploded perspective view of an oscillating device in accordance with an embodiment of the present invention.

Figure 5 is an exploded perspective view of a fixture in accordance with an embodiment of the present invention.

Figure 6 is a perspective assembled view of the nanofluidic micro-lubrication apparatus in accordance with an embodiment of the present invention.

Figure 7 is a partial cross-sectional view of the nanofluid minilubrication apparatus in accordance with an embodiment of the present invention.

Referring to FIG. 1 , a nano-fluid lubricating device 100 includes an oil supply device 110 , an oscillating device 120 and a fixing device 130 . The oil feeding device 110 and the oscillating device 120 are disposed on the first embodiment of the present invention. Fixing device 130.

Referring to Figures 1, 2 and 3, the oil supply device 110 has an oil cup 111 and an oil mist mixer 112. The oil cup 111 has an accommodating space 111a, a bottom portion 111b, an oil outlet hole 111c, and a filter. The housing 111d, a top portion 111e, an opening 111f and a cup cover 111g, the accommodating space 111a is for accommodating a cutting fluid L containing nano particles, the oil outlet hole 111c is located at the bottom portion 111b, and the filter 111d is disposed at The accommodating space 111a is disposed, and the filter 111d covers the oil outlet hole 111c. The opening 111f is located at the top portion 111e. The lid 111g covers the opening 111f to prevent impurities from falling into the accommodating space 111a. Oil mist mixer The chamber 112 has a chamber 112a, and the chamber 112a communicates with the accommodating space 111a of the oil cup 111. The cutting fluid L containing the nanoparticles flows to the oil mist mixer via the filter 111d and the oil outlet 111c. In the chamber 112a of 112, the filter 111d prevents impurities in the cutting fluid L containing the nanoparticles from flowing into the chamber 112a of the oil mist mixer 112 to block the oil pipe. The oil mist mixer 112 receives a high-pressure gas (not shown) in addition to the cutting fluid L containing the nano particles, and the high-pressure gas and the cutting fluid L containing the nano particles. After being sufficiently mixed in the chamber 112a, it is ejected by a tubing (not shown) of the oil mist mixer 112 to form a cutting spray containing nano particles (not shown), in this embodiment. In the middle, the nano particles are graphite-based particles, such as carbon nanotubes and graphite thin.

Referring to FIG. 1 , in the embodiment, the high pressure gas is injected into the chamber 112 a of the oil mist mixer 112 via an air cleaner 113 , a solenoid valve 114 , and a frequency modulator 115 . The cutting liquid L containing the nanoparticles is mixed, and the cutting spray containing the nanoparticles is ejected from the chamber 112a.

Referring to Figures 1, 2 and 3, the oscillating device 120 has an amplitude rod 121, an oscillator 122 and a fixing member 123. The amplitude rod 121 has a fixed end 121a and an oscillating end 121b. The oscillator 122 is combined. The fixing member 123 is coupled to the oscillator 122 at the fixed end 121a of the amplitude rod 121, and the oscillator 122 is located between the fixing member 123 and the amplitude rod 121. Please refer to FIGS. 2 and 3, In the embodiment, the oscillator 122 and the fixing member 123 are located outside the oil cup 111, and the amplitude rod 121 is inserted into a through hole 111h of the cup cover 111g, and the oscillating end 121b of the amplitude rod 121 is located therein. In the cutting fluid L containing nano particles. Referring to FIGS. 3 and 4, the oscillator 122 has a plurality of oscillating elements 122b and a plurality of electrodes 122c. The oscillating elements 122b and the electrodes 122c are spaced apart and arranged along the axial direction of the amplitude rod 121. In the embodiment, the oscillating element 122b is a piezoelectric material. When a high frequency power source is applied to the oscillating elements 122b and the electrodes 122c, the oscillating elements 122b vibrate to provide an axial direction. Oscillation, and the oscillation generated by the oscillating elements 122b is amplified by the amplitude rod 121 and transmitted to the cutting fluid L containing the nanoparticles, and cavitation is generated in the cutting fluid L containing the nanoparticles ( Cavitation), so that the nanoparticles in the cutting fluid L containing the nanoparticles can be uniformly dispersed to avoid the agglomeration effect of the nanoparticles in the cutting fluid L containing the nanoparticles, see Fig. 3, Preferably, the amplitude rod 121 and the filter 111d are arranged along the axial direction of the amplitude rod 121. The amplitude rod 121 is a stepped amplitude rod, which can achieve an optimal amplification oscillation effect. In addition, the amplitude rod 121 The oscillating end 121b and the filter 111d have a spacing D, and the spacing D is between 5 and 10 mm, so that the oscillation transmitted through the amplitude rod 121 can be used in the cutting fluid L containing the nano particles. Form the best cavitation effect.

Referring to FIGS. 3 and 4, in the embodiment, the fixing member 123 has a through hole 123a. The oscillator 122 has a permanent through hole 122a. The fixed end 121a of the amplitude rod 121 has an opening 121c. The hole 123a, the through hole 122a and the opening 121c form a coupling hole H. In the embodiment, a coupling member 124 is inserted into the coupling hole H to fix the fixing member 123, the oscillator 122 and the amplitude. The rods 121 are integrated so that the oscillation generated by the oscillator 122 can be transmitted to the amplitude rod 121, and then amplified by the amplitude rod 121 and transmitted to the cutting liquid L containing the nanoparticles, preferably, The coupling member 124 can be a metal screw. Therefore, the oscillating device 120 further has an insulating sleeve 125. The insulating sleeve 125 is disposed in the through hole 122a, and the insulating sleeve 125 is located at the electrodes 122c and the coupling member. Between 124, the electrodes 122c are prevented from being short-circuited by contact with the bonding member 124.

Referring to Figures 1, 2 and 5, the fixing device 130 has a mounting seat 131 and a moving plate 132. The moving plate 132 is coupled to the mounting seat 131. The oil feeding device 110 is disposed on the mounting seat 131. The oscillating device The mounting plate 131 has a bottom plate 131a, a vertical plate 131b and at least one connecting pad 131c. The vertical plate 131b is coupled to the bottom plate 131a, and the connecting pad 131c is coupled. The oil supply device 110 is connected to the oil supply device 110 and the vertical plate 131b via the connection pad The 131c is connected to the vertical plate 131b. The vertical plate 131b has a plurality of guiding grooves 131d, and the guiding plate 131d extends through the vertical plate 131b. The moving plate 132 has a plurality of coupling through holes 132a and a plurality of coupling pins 132b. Each of the coupling pins 132b is inserted into the coupling hole 132a and each of the guiding grooves 131d to join the vertical plate 131b and the moving plate 132.

Referring to FIGS. 1 and 6, the moving plate 132 can be moved to a first position and a second position by the guiding grooves 131d. Referring to FIG. 1, when the combining pins 132b are located in the respective guides. When the bottom of the groove 131d is at the bottom of the groove 131d, the moving plate 132 is located at the first position. At this time, the oscillating end 121b of the amplitude rod 121 is located in the cutting fluid L containing the nano particles, please refer to FIG. When the pin 132b is located at the top of each of the guiding slots 131d, the moving plate 132 is located at the second position. At this time, the amplitude rod 121 is separated from the oil cup 111. Therefore, the cup cover 111g can be taken from the oil cup 111. Next, the cutting fluid L containing the nanoparticles is added to the accommodating space 111a.

Referring to Figures 2, 3 and 7, the moving plate 132 has a support frame 133. The support frame 133 is located above the oil cup 111. The fixing member 123 of the oscillating device 120 is coupled to the support frame 133 so that the oil cup 111 is located below the oscillating device 120. Referring to FIGS. 1 and 3, in the embodiment, the support frame 133 has a first cantilever 133a, a second cantilever 133b, a stop plate 133c and a combined space S. The joint space S is located between the first cantilever 133a and the second cantilever 133b. Referring to FIGS. 2 and 3, the fixing member 123 has a side wall 123b and a coupling groove 123c. The coupling groove 123c is recessed in the side wall. 123b, the first cantilever 133a and the second cantilever 133b are located in the coupling groove 123c to limit the fixing member 123 to the joint space S, and the oscillation device 120 can be prevented from moving in the X-axis and the Z-axis direction. In the second and seventh embodiments, the two ends of the blocking plate 133c are respectively coupled to the first cantilever 133a and the second cantilever 133b, and the blocking plate 133c is pressed against the fixing member 123 to further avoid the oscillating device 120. Moving in the Y-axis direction, the fixing member 123 can be more stably restricted to the combined space In the middle S to ensure the vibration generated by the oscillating device 120 The swash can be transferred to the cutting fluid L containing the nanoparticles to achieve the best cavitation effect.

In the present invention, the amplitude rod 121 of the vibrating device 120 is located in the cutting fluid L containing the nano particles, and the cavitation generated by the oscillation enables the nano particles in the cutting liquid L containing the nano particles to be uniformly dispersed. And the oil mist mixer 112 mixes the cutting liquid L containing the nano particles with the high pressure gas, and ejects the cutting jet to form the nanometer-containing cutting spray, and performs cooling and lubrication with the cutting spray containing the nano particles. It can effectively reduce the cutting temperature to avoid the burning of the workpiece and prolong the service life of the grinding wheel.

The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. .

100‧‧‧Nano fluid micro-lubrication equipment

110‧‧‧oil supply unit

111‧‧‧ oil cup

111a‧‧‧ accommodating space

111b‧‧‧ bottom

111d‧‧‧Filter

111e‧‧‧ top

111g‧‧‧ cup lid

112‧‧‧Oil mist mixer

113‧‧‧Air filter

114‧‧‧Solenoid valve

115‧‧‧frequency modulator

120‧‧‧Oscillator

121‧‧‧amplitude rod

130‧‧‧Fixed devices

131c‧‧‧ connection pad

131d‧‧‧ guiding slot

132‧‧‧Mobile board

132b‧‧‧ Combined tying

L‧‧‧Cutting fluid containing nano particles

Claims (14)

A nano-fluid micro-lubricating device for providing a cutting spray containing nano particles, the nano-fluid lubricating device comprising: an oil supply device having an oil cup and an oil mist mixer, the oil cup having a a accommodating space and a filter, the filter is disposed in the accommodating space, the oil mist mixer has a chamber, the chamber is connected to the accommodating space of the oil cup, and the accommodating space of the oil cup is accommodated a cutting fluid containing nano particles; and an oscillating device having an amplitude rod and an oscillator, the amplitude rod having a fixed end and an oscillating end, the oscillator being coupled to the fixed end of the amplitude rod, The oscillating end of the amplitude rod is located in the cutting fluid containing the nano particles, wherein the amplitude rod and the filter are axially arranged along one of the amplitude rods, and the oscillating end of the amplitude rod and the filter have A pitch of between 5 and 10 mm. The nano fluid mini-lubricating device of claim 1, wherein the oil cup has a bottom and an oil outlet, the oil outlet is located at the bottom, and the filter covers the oil outlet, the The cutting fluid of the nanoparticle flows into the chamber of the oil mist mixer through the filter and the oil outlet. The nanofluid mini-lubricating device of claim 1, wherein the oil cup further has a top, an opening and a cup cover, the opening is located at the top, the lid covers the opening, the lid has A perforation, the amplitude rod is inserted in the perforation. The nanofluid mini-lubricating device of claim 1, wherein the amplitude rod is a stepped amplitude rod. The nano-fluid mini-lubricating device of claim 1, wherein the oscillating device has a fixing member and a coupling member, and the oscillator is located between the fixing member and the amplitude rod, the fixing member has a transparent a hole having a constant perforation, the fixed end of the amplitude rod having an opening, the through hole, the through hole and the opening forming a coupling hole, wherein the coupling member is inserted into the coupling hole to The fixture, the oscillator and the amplitude rod are integrated. The nanofluid mini-lubrication device of claim 5, wherein the oscillator has a plurality of oscillating elements and a plurality of electrodes, each of the oscillating elements and each of the electrodes being spaced apart and along the axial direction of the amplitude rod Arrange to provide axial oscillation. The nano-fluid mini-lubricating device of claim 6, wherein the oscillating device further has an insulating sleeve, the insulating sleeve is disposed in the through-hole, and the insulating sleeve is located at the electrodes and the bonding member between. The nanofluid mini-lubricating device of claim 1, further comprising a fixing device, wherein the oiling device and the oscillating device are disposed on the fixing device. The nano fluid mini-lubricating device of claim 8, wherein the fixing device has a mounting seat and a moving plate, the moving plate is coupled to the mounting seat, and the oil feeding device is disposed on the mounting seat, the oscillation The device is disposed on the moving plate, the moving plate is movable to a first position and a second position, and when the moving plate is located in the first position, the oscillating end of the amplitude rod is located in the cutting of the nano particle In the liquid, when the moving plate is in the second position, the amplitude rod is separated from the oil cup. The nano fluid mini-lubricating device of claim 9, wherein the oscillating device has a fixing member coupled to the oscillator, the moving plate has a support frame, and the support frame is located in the oil cup Above, the fixing member is coupled to the support frame. The nanofluid mini-lubricating device of claim 10, wherein the support frame has a first cantilever, a second cantilever, and a combined space, and the combined space is located in the first cantilever and the second cantilever The fixing member has a side wall and a coupling groove. The coupling groove is recessed in the side wall. The first cantilever and the second cantilever are located in the coupling groove to limit the fixing member to the joint space. Such as the nano fluid mini-lubricating device described in claim 11 of the patent scope, wherein the branch The bracket has a stopper plate, and two ends of the stopper plate are respectively coupled to the first cantilever and the second cantilever, and the stopper plate presses the fixing member. The nano fluid mini-lubricating device of claim 9, wherein the mounting base has a bottom plate and a vertical plate, the vertical plate is coupled to the bottom plate, and the oil feeding device is coupled to the vertical plate, the vertical plate has a plurality of guiding slots, each of the guiding slots extending through the vertical plate, the moving plate has a plurality of combined through holes and a plurality of combining bolts, each of the connecting through holes corresponding to each of the guiding slots, wherein the combining bolts are inserted in the combination The perforations and the guiding grooves are combined to join the vertical plate and the moving plate. The nano fluid mini-lubricating device of claim 13, wherein the mounting seat has at least one connecting pad coupled between the oil feeding device and the vertical plate, and the oil feeding device is connected via the connecting pad The riser is located below the oscillating device.