CN114310465B - Annular micro-lubricating device with variable-position voltage-regulating diameter-changing function and suitable for milling machine - Google Patents

Annular micro-lubricating device with variable-position voltage-regulating diameter-changing function and suitable for milling machine Download PDF

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CN114310465B
CN114310465B CN202111524622.0A CN202111524622A CN114310465B CN 114310465 B CN114310465 B CN 114310465B CN 202111524622 A CN202111524622 A CN 202111524622A CN 114310465 B CN114310465 B CN 114310465B
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rotating disc
annular
variable
oil
diameter
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CN114310465A (en
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周舒
吴淑晶
谷顾全
张卜鑫
张烨锴
朱大伟
孙鹏飞
张�诚
卢琨
王大中
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Abstract

The invention relates to a variable-position pressure-regulating diameter-variable annular trace lubricating device suitable for a milling machine, which comprises a rotating disk, a fixed disk, a trace lubricating system, a nozzle, a rotating mechanism and a lifting mechanism, wherein the rotating disk is fixed on the fixed disk; the rotating disc is horizontally arranged, an annular oil way I is arranged on the upper surface of the rotating disc, and more than two oil outlets with different diameters are arranged on the lower surface of the rotating disc; the annular oil way I is simultaneously communicated with an oil outlet of the micro-lubricating system and an oil outlet of the rotating disc; only one of the oil outlets of the rotating disc is connected with the nozzle; the fixed disc is positioned above the rotating disc and seals the annular oil path I; a pressure regulator is arranged in the micro-lubricating system; a milling cutter of the milling machine penetrates out of the center of the rotating disc, and oil outlets of the rotating disc are distributed around the milling cutter; the rotating mechanism is used for driving the rotating disc to horizontally rotate; the lifting mechanism is used for driving the rotating disc to move up and down. The product of the invention can realize lubrication on various aspects of the milling cutter without adapting to various nozzles, thereby obtaining better processing quality.

Description

Annular micro-lubricating device with variable-position voltage-regulating diameter-changing function and suitable for milling machine
Technical Field
The invention belongs to the technical field of micro-lubrication, and relates to a variable-position voltage-regulating diameter-changing annular micro-lubrication device suitable for a milling machine.
Background
The machine tool is very popular in the use degree of the machine tool in China and plays a great role in promoting the industrial development, but a large amount of cutting fluid is needed in the cutting process, certain environmental pollution is caused, the minimal quantity lubrication technology (MQL) is also called as minimal quantity lubrication, and the lubrication can be realized only by mixing and atomizing a very small quantity of lubricating oil and compressed air. Compared with the traditional casting type lubrication, the micro-lubrication is a green cooling lubrication mode, can reduce the use of cutting fluid, reduces the environmental pollution, and plays a promoting role in the development of modern industry, so that the micro-lubrication technology is urgently needed to be developed.
There are a number of drawbacks with current minimal lubrication technology. Many experiments can show that the angle of nozzle and the distance from the nozzle to the milling cutter can influence the actual lubricating effect and then influence the processing quality, and because the angle and the position of nozzle need constantly change, but less rather than the nozzle of adaptation, cause the waste of lubricated liquid easily.
During the milling process, the part of the milling cutter, which is in contact with the workpiece, is the part with the largest cutting heat, while the part of the milling cutter, which is in contact with the workpiece, is constantly changed on the workpiece contact surface, for example, the contact positions of the workpiece, the tool contact part and the milling groove are different during the milling of the end surface, and in the prior art, the nozzles are all in fixed-point injection during the milling process, so sometimes, the nozzles cannot be accurately injected to the cutting position. Particularly in the field of micro milling, the contact area between a workpiece and a milling cutter is small, and if the oil mist spraying position is not accurate, the milling part is difficult to cool and remove.
Therefore, the research on the annular minimal quantity lubrication device which is suitable for the milling machine and has variable position and pressure regulating and diameter changing is of great significance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an annular micro-lubricating device with variable-position voltage-regulating variable diameter, which is suitable for a milling machine.
In order to achieve the purpose, the invention adopts the following scheme:
a variable-position pressure-regulating diameter-variable annular micro-lubricating device suitable for a milling machine comprises a rotating disk, a fixed disk, a micro-lubricating system, a nozzle, a rotating mechanism and a lifting mechanism;
the rotating disc is horizontally arranged, an annular oil way I is arranged on the upper surface of the rotating disc, and more than two oil outlets with different diameters are arranged on the lower surface of the rotating disc; the annular oil way I is simultaneously communicated with an oil outlet of the micro-lubricating system and an oil outlet of the rotating disc; only one of the oil outlets of the rotating disc is connected with the nozzle;
the fixed disc is positioned above the rotating disc and seals the annular oil path I;
a pressure regulator is arranged in the micro-lubricating system, and the pressure regulator is required to regulate pressure because the pressure required by different gases is different, so that the micro-lubricating system can adapt to cutting of different workpieces and can use atomization of different types of gases;
a milling cutter of the milling machine penetrates out of the center of the rotating disc, and oil outlets of the rotating disc are distributed around the milling cutter;
the rotating mechanism is used for driving the rotating disc to rotate horizontally, the lifting mechanism is used for driving the rotating disc to move up and down, and the rotating mechanism and the lifting mechanism are matched to realize that the position of the nozzle can be changed randomly during cutting work of the milling machine so as to realize the function of displacement.
The 'variable position' in the variable position pressure regulating and diameter changing annular micro-lubricating device suitable for the milling machine is that the height and the angle of the nozzle can be changed, so that the position of the nozzle can be adjusted and changed; "pressure adjustable" means that the pressure of the pipeline can be adjusted; by "variable diameter" is meant that the diameter of the outlet port can be varied.
As a preferable technical scheme:
according to the annular minimal quantity lubrication device suitable for the milling machine and capable of changing pressure and diameter, the number of oil outlets of the rotating disc is 4, and the oil outlets are uniformly distributed around the circumference of the milling cutter.
According to the variable-position pressure-regulating diameter-variable annular minimal quantity lubrication device suitable for the milling machine, the oil outlets of the 4 rotating disks are respectively an oil outlet with the diameter of 20mm, an oil outlet with the diameter of 24mm, an oil outlet with the diameter of 30mm and an oil outlet with the diameter of 36mm, when different workpieces are cut and different gases are used, a nozzle is installed on the oil outlet, and the rest oil outlets are screwed by using covers.
According to the annular minimal quantity lubrication device suitable for the milling machine and capable of changing pressure and diameter, the oil outlet of the rotating disc is connected with the nozzle through the straight pipe and the bent pipe, the bent pipe is connected with the straight pipe and the nozzle, and the proper distance between the nozzle and the milling cutter can be ensured due to the arrangement of the connection mode of the oil outlet of the rotating disc and the nozzle.
The annular minimal quantity lubrication device suitable for the milling machine and capable of changing the pressure and the diameter further comprises a pressure plate; the fixed disc is composed of an upper cylinder and a lower cylinder which are coaxial, and the diameter of the lower cylinder is smaller than that of the upper cylinder; the pressing plate is positioned below the lower cylinder and connected with the lower cylinder; the rotating disc is sleeved on the lower cylinder and clamped between the upper cylinder and the pressing plate;
the lower end surface of the upper cylinder is provided with an annular oil way II, the sections of the annular oil way I and the annular oil way II are both semicircular, and the annular oil way I and the annular oil way II form an annular oil way with a circular section; the upper end surface of the upper cylinder is provided with an oil inlet which is simultaneously communicated with an oil outlet of the trace lubrication system and the annular oil way II;
the milling cutter penetrates out of the pressing plate.
The annular minimal quantity lubrication device suitable for the milling machine and capable of changing the pressure and the diameter comprises a rotating mechanism, a rotating mechanism and a control mechanism, wherein the rotating mechanism comprises a stepping motor I, a motor fixing plate I, a pinion and a bull gear; the stepping motor I is connected with the upper cylinder through a motor fixing plate I; the small gear is sleeved on an output shaft of the stepping motor I, is fixedly connected with the output shaft and is meshed with the large gear; the large gear is sleeved on the rotating disc and fixedly connected with the rotating disc; the stepping motor I is connected with a numerical control system of the machine tool.
The annular minimal quantity lubrication device with the variable-position pressure-regulating diameter suitable for the milling machine comprises a lifting mechanism, a lifting mechanism and a control mechanism, wherein the lifting mechanism comprises a stepping motor II, a synchronous pulley I, a synchronous belt, a shaft sleeve and a screw rod; the synchronous belt pulley II is connected with the synchronous belt pulley I through a synchronous belt; the synchronous belt wheel II is sleeved on an output shaft of the stepping motor II; the synchronous belt pulley I is sleeved on a shaft sleeve, the shaft sleeve is sleeved on a screw rod, and the synchronous belt pulley I and the screw rod are connected through a ball screw; the lower end of the screw rod is connected with the upper cylinder (specifically, the screw rod can be fixed); the stepping motor II is connected with a numerical control system of the machine tool.
The annular minimal quantity lubrication device suitable for the milling machine and capable of changing the pressure and the diameter comprises a lifting mechanism, a motor fixing plate II, a bearing fixing plate and a bearing fixing plate, wherein the lifting mechanism is arranged on the motor fixing plate II; the lifting mechanism is arranged in the spindle box; the stepping motor II is connected with the spindle box through a motor fixing plate II; the bearing is sleeved on the shaft sleeve; the bearing is connected with the main spindle box through a bearing fixing plate.
The annular minimal quantity lubrication device with the variable position, the pressure and the diameter is suitable for the milling machine, the lifting mechanisms are arranged in two groups, and the two groups are symmetrically arranged, so that the movement track of the milling cutter is not obstructed, and the stress of the whole mechanism is uniform.
According to the annular minimal quantity lubrication device suitable for the milling machine and capable of changing the pressure and the diameter, each group of lifting mechanisms corresponds to the two bearings and the two bearing fixing plates, the two bearings are respectively located on the upper side and the lower side of the synchronous belt pulley I, the bearings need to be used in pairs to offset axial force, and the bearings can enable the shaft sleeve to rotate and the fixing plates to achieve the function of fixing the lifting mechanisms.
Advantageous effects
(1) The annular micro-lubricating device with variable position, pressure and diameter is suitable for a milling machine, the angle of a nozzle (the angle refers to the angle of the nozzle rotating around the central shaft of a milling cutter, and the rotating disc rotates to drive the nozzle to rotate, so that the angle is changed) can be changed according to the actual cutting condition through the rotating mechanism, the height of the nozzle can be changed through the lifting mechanism, the position change of the nozzle is programmed in advance according to the position of the milling cutter in the milling process, the program is put into the milling program, so that the position of the nozzle can be continuously changed in the milling process, the nozzle can always align to the milling central position, the lubrication of various aspects of the milling cutter can be realized without adapting various nozzles, and the better processing quality is obtained;
(2) According to the variable-position pressure-regulating and diameter-changing annular minimal quantity lubrication device suitable for the milling machine, the flow speed can be changed according to requirements by matching oil outlets with different diameters with a pressure regulator in a minimal quantity lubrication system, and the variable-position pressure-regulating and diameter-changing annular minimal quantity lubrication device is suitable for cutting of different workpieces and can be atomized by using different types of gas.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the variable-position, pressure-regulating and diameter-changing annular minimal quantity lubrication device for a milling machine according to the present invention;
fig. 2 and 4 are partial structural schematic diagrams of the annular minimal quantity lubrication device with variable positions, pressure and diameter suitable for the milling machine of the invention;
FIG. 3 is a sectional view of the whole body composed of a rotating mechanism, a fixed disk, a rotating disk and a pressure plate in the variable position, pressure and diameter adjustable annular minimal quantity lubrication device suitable for a milling machine according to the present invention;
FIG. 5 is an exploded view of the lifting mechanism of the variable position, pressure and diameter annular minimal quantity lubrication device for a milling machine according to the present invention;
FIG. 6 is an assembly diagram of a lifting mechanism and a spindle box in the variable-position, pressure-regulating and diameter-changing annular minimal quantity lubrication device for the milling machine of the invention;
the lubricating system comprises a 1-minimal lubricating system, a 2-pressure regulator, a 3-oil outlet of the minimal lubricating system, a 4-lifting mechanism, a 5-rotating mechanism, a 6-oil inlet, a 7-milling cutter, a 9-nozzle, a 10-fixed disk, a 11-big gear, a 12-rotating disk, a 13-pressing plate, a 14-stepping motor I, a 15-motor fixing plate I, a 16-small gear, a 17-annular oil way I, an 18-annular oil way II, a 19-oil outlet with the diameter of 20mm, a 20-bearing fixing plate, a 21-bearing, a 22-synchronous pulley I, a 23-synchronous belt, a 24-screw, a 25-synchronous pulley II, a 26-motor fixing plate II, a 27-stepping motor II, an oil outlet with the diameter of 24mm 28-diameter, an oil outlet with the diameter of 30mm 29-diameter, an oil outlet with the diameter of 30-36 mm, a 31-bent pipe, a 32-straight pipe, an output shaft of a 34-stepping motor I, a 35-main shaft box and a 36-shaft sleeve.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A variable-position pressure-regulating diameter-variable annular micro-lubricating device suitable for a milling machine is shown in figures 1-6 and comprises a rotating disc 12, a fixed disc 10, a pressure plate 13, a micro-lubricating system 1, a nozzle 9, a rotating mechanism 5 and a lifting mechanism 4;
the rotating disc 12 is horizontally arranged, and the upper surface of the rotating disc is provided with an annular oil way I17;
the fixed disk 10 is composed of an upper cylinder and a lower cylinder which are coaxial, and the diameter of the lower cylinder is smaller than that of the upper cylinder; the pressing plate 13 is positioned below the lower cylinder and connected with the lower cylinder; the rotating disc 12 is sleeved on the lower cylinder and clamped between the upper cylinder and the pressing plate 13;
the lower end surface of the upper cylinder is provided with an annular oil way II 18, the sections of the annular oil way I17 and the annular oil way II 18 are both semicircular, and the annular oil way I17 and the annular oil way II form an annular oil way with a circular section and sealing performance; an oil inlet 6 is formed in the upper end face of the upper cylinder, and the oil inlet 6 is communicated with an oil outlet 3 of the micro-lubricating system and an annular oil way II 18 at the same time;
milling cutters 7 of the milling machine sequentially penetrate out of the center of the rotating disc 12 and the center of the pressing plate 13, 4 oil outlets with different diameters are formed in the lower surface of the rotating disc, and the oil outlets are evenly distributed around the circumference of the milling cutters 7; oil outlets of the 4 rotating disks are communicated with an annular oil path I17 and respectively comprise an oil outlet 19 with the diameter of 20mm, an oil outlet 28 with the diameter of 24mm, an oil outlet 29 with the diameter of 30mm and an oil outlet 30 with the diameter of 36 mm; only one oil outlet of the rotating disc is connected with the nozzle 9 through a section of straight pipe 32 and a section of bent pipe 31, and the bent pipe 31 is simultaneously connected with the straight pipe 32 and the nozzle 9;
a pressure regulator 2 is arranged in the micro-lubricating system 1;
the rotating mechanism 5 comprises a stepping motor I14, a motor fixing plate I15, a pinion 16 and a bull gear 11; the stepping motor I14 is connected with the upper cylinder through a motor fixing plate I15; the pinion 16 is sleeved on the output shaft 34 of the stepping motor I, is fixedly connected with the output shaft and is meshed with the bull gear 11; the bull gear 11 is sleeved on the rotating disc 12 and fixedly connected with the rotating disc; the stepping motor I14 is connected with a numerical control system of the machine tool; the rotating mechanism 5 is used for driving the rotating disc 12 to rotate horizontally;
the lifting mechanism 4 comprises a stepping motor II 27, a synchronous pulley II 25, a synchronous pulley I22, a synchronous belt 23, a shaft sleeve 36, a screw 24, a bearing 21, a motor fixing plate II 26 and a bearing fixing plate 20; the synchronous pulley II 25 is connected with the synchronous pulley I22 through a synchronous belt 23; the synchronous belt wheel II 25 is sleeved on an output shaft of the stepping motor II 27; the synchronous pulley I22 is sleeved on the shaft sleeve 36 and fixedly connected with the shaft sleeve 36, the shaft sleeve 36 is sleeved on the screw 24, and the two are connected through a ball screw; the lower end of the screw rod 24 is connected with the upper cylinder (specifically, the screw rod can be used for fixing); the stepping motor II 27 is connected with a numerical control system of the machine tool; the lifting mechanism 4 is arranged in the spindle box 35; the stepping motor II 27 is connected with the spindle box 35 through a motor fixing plate II 26; the bearing 21 is sleeved on the shaft sleeve 36; the bearing 21 is connected with a main spindle box 35 through a bearing fixing plate 20; the lifting mechanism 4 is used for driving the rotating disc 12 to move up and down; the two groups of lifting mechanisms 4 are symmetrically arranged; each set of lifting mechanism 4 corresponds to two bearings 21 and two bearing fixing plates 20, and the two bearings 21 are respectively positioned at the upper and lower sides of a synchronous pulley I22.
The annular micro-lubricating device with variable position, pressure and diameter is suitable for a milling machine, when different gases are required to be selected during working, the pressure regulator 2 can be adjusted to regulate the pressure of a pipeline, an oil outlet with a proper diameter can be selected, the nozzle 9 is installed at the selected position, and the rest oil outlets are covered by the cover;
during milling, oil mist flows from an oil outlet 3 of the trace lubrication system device to an oil inlet 6 of the fixed disc, enters a semi-circular oil path 18 and a semi-circular oil path 17, then enters an oil outlet, and finally is sprayed out from a nozzle 9;
if the position of the cutting part can not be sprayed by oil mist, an instruction can be input on a milling machine to control a stepping motor I14 to rotate, a small gear 16 is driven to rotate together, the small gear 16 and a large gear 11 are in meshing transmission, the large gear 11 drives a rotating disc 12 to rotate, the angle of a nozzle 9 is changed, the angle refers to the angle of the nozzle rotating around the central shaft of the milling cutter, and the angle is changed to enable the spraying position to be opposite to the milling center, so that the lubricating effect is prevented from being influenced by workpiece shielding;
or an instruction can be input to control the stepping motor II 27 to rotate synchronously, taking the left lifting mechanism as an example, the stepping motor II 27 drives the synchronous pulley II 25 to rotate, so that the synchronous belt 23 drives the synchronous pulley I22, the shaft sleeve 36 rotates at a fixed position, and the screw 24 only moves up and down, so that the height of the nozzle 9 changes;
the rotating mechanism 5 is matched with the lifting mechanism 4, and the nozzle is adjusted to a proper position so as to be accurately sprayed to a cutting part.
The lubricating process of the annular micro-lubricating device with the variable position, the pressure and the diameter suitable for the milling machine is as follows:
when the milling cutter 7 just touches the workpiece, the milling cutter and the workpiece only have one plane contact, and the nozzle 9 is sprayed at a fixed point; when the milling cutter 7 mills the end face, one side face is contacted with the front end plane and a workpiece, and the contact part is 90 degrees, so that the nozzle 9 rotates and sprays back and forth at 90 degrees by taking the milling cutter 7 as a rotation center; when the milling cutter 7 enters a workpiece, two side surfaces and a front end surface of the general milling cutter 7 are contacted with the workpiece, the contact part is 180 degrees, and then the nozzle 9 rotates and sprays back and forth at 180 degrees by taking the milling cutter 7 as a rotation center; when the milling cutter moves back and is far away from the workpiece, the contact part of the milling cutter and the workpiece is gradually reduced, the heat of the cutter point part of the milling cutter is the highest, the nozzle is gradually descended and moves to the part aligning with the cutter point, and fixed point spraying is carried out. The lubricating method for constantly changing the injection position in the milling process can accurately cool the cutting part and take away the cutting.

Claims (7)

1. A variable-position pressure-regulating diameter-variable annular micro-lubricating device suitable for a milling machine is characterized by comprising a rotating disc (12), a fixed disc (10), a micro-lubricating system (1), a nozzle (9), a rotating mechanism (5), a lifting mechanism (4) and a pressing plate (13);
the rotating disc (12) is horizontally placed, an annular oil way I (17) is arranged on the upper surface of the rotating disc, and more than two oil outlets with different diameters are arranged on the lower surface of the rotating disc; the annular oil way I (17) is simultaneously communicated with an oil outlet (3) of the micro-lubricating system and an oil outlet of the rotating disc; only one of the oil outlets of the rotating disc is connected with the nozzle (9);
the fixed disc (10) is positioned above the rotating disc (12) and seals an annular oil path I (17);
a pressure regulator (2) is arranged in the micro-lubricating system (1);
a milling cutter (7) of the milling machine penetrates out of the center of the rotating disc (12), and oil outlets of the rotating disc are distributed around the milling cutter (7);
the fixed disc (10) is composed of an upper cylinder and a lower cylinder which are coaxial, and the diameter of the lower cylinder is smaller than that of the upper cylinder; the pressing plate (13) is positioned below the lower cylinder and connected with the lower cylinder; the rotating disc (12) is sleeved on the lower cylinder and clamped between the upper cylinder and the pressing plate (13); the lower end surface of the upper cylinder is provided with an annular oil way II (18), the sections of the annular oil way I (17) and the annular oil way II (18) are both semicircular, and the annular oil way I (17) and the annular oil way II (18) form an annular oil way with a circular section; an oil inlet (6) is formed in the upper end face of the upper cylinder, and the oil inlet (6) is communicated with an oil outlet (3) of the micro-lubricating system and an annular oil way II (18) at the same time; the milling cutter (7) penetrates out of the pressing plate (13);
the rotating mechanism (5) comprises a stepping motor I (14), a motor fixing plate I (15), a pinion (16) and a bull gear (11); the stepping motor I (14) is connected with the upper cylinder through a motor fixing plate I (15); the small gear (16) is sleeved on an output shaft (34) of the stepping motor I, is fixedly connected with the output shaft and is meshed with the large gear (11); the bull gear (11) is sleeved on the rotating disc (12) and fixedly connected with the rotating disc; the stepping motor I (14) is connected with a numerical control system of the machine tool;
the lifting mechanism (4) comprises a stepping motor II (27), a synchronous pulley II (25), a synchronous pulley I (22), a synchronous belt (23), a shaft sleeve (36) and a screw (24); the synchronous pulley II (25) is connected with the synchronous pulley I (22) through a synchronous belt (23); a synchronous belt wheel II (25) is sleeved on an output shaft of the stepping motor II (27); the synchronous pulley I (22) is sleeved on the shaft sleeve (36) and fixedly connected with the shaft sleeve, the shaft sleeve (36) is sleeved on the screw rod (24), and the two are connected through a ball screw; the lower end of the screw (24) is connected with the upper cylinder; the stepping motor II (27) is connected with a numerical control system of the machine tool.
2. The variable-position pressure-regulating diameter-variable annular minimal quantity lubrication device suitable for the milling machine as claimed in claim 1, wherein the number of oil outlets of the rotating disc is 4, and the oil outlets are uniformly distributed around the circumference of the milling cutter (7).
3. The annular minimal quantity lubrication device with variable displacement, pressure regulation and variable diameter suitable for the milling machine as claimed in claim 2, wherein the oil outlets of the 4 rotating disks are respectively an oil outlet (19) with a diameter of 20mm, an oil outlet (28) with a diameter of 24mm, an oil outlet (29) with a diameter of 30mm and an oil outlet (30) with a diameter of 36 mm.
4. The annular minimal quantity lubrication device with the variable-position pressure-regulating variable-diameter suitable for the milling machine is characterized in that an oil outlet of the rotating disc is connected with the nozzle (9) through a section of straight pipe (32) and a section of bent pipe (31), and the bent pipe (31) is simultaneously connected with the straight pipe (32) and the nozzle (9).
5. The annular minimal quantity lubrication device with the variable-position pressure-regulating variable-diameter suitable for the milling machine is characterized in that the lifting mechanism (4) further comprises a bearing (21), a motor fixing plate II (26) and a bearing fixing plate (20); the lifting mechanism (4) is arranged in the main shaft box (35); the stepping motor II (27) is connected with the spindle box (35) through a motor fixing plate II (26); the bearing (21) is sleeved on the shaft sleeve (36); the bearing (21) is connected with the main spindle box (35) through a bearing fixing plate (20).
6. The variable-position pressure-regulating variable-diameter annular minimal quantity lubrication device suitable for the milling machine as claimed in claim 5, wherein the lifting mechanisms (4) are arranged in two groups, and the two groups are symmetrically arranged.
7. The annular minimal quantity lubrication device with the variable-position pressure-regulating variable-diameter suitable for the milling machine as claimed in claim 6, wherein each group of the lifting mechanism (4) corresponds to two bearings (21) and two bearing fixing plates (20), and the two bearings (21) are respectively positioned at the upper side and the lower side of the synchronous pulley I (22).
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CN108115462A (en) * 2017-12-29 2018-06-05 重庆大学 A kind of programmable microscale lubrication jet angle phase adjusting device and its application method
CN208449640U (en) * 2018-06-08 2019-02-01 广州市德天环保科技有限公司 A kind of automatic atomising nozzle arrangements
CN112720051A (en) * 2020-12-17 2021-04-30 上海大学 Accurate jet lubrication device suitable for MQL milling

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