CN112571151B

CN112571151B - Device for measuring additional load loss coefficient of milling machine without cutting

Info

Publication number: CN112571151B
Application number: CN202011614466.2A
Authority: CN
Inventors: 胡韶华; 汪女辉; 蔡维
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-10-21
Filing date: 2020-12-31
Publication date: 2022-01-28
Anticipated expiration: 2040-12-31
Also published as: CN112571151A

Abstract

The device for measuring the additional load loss coefficient of the milling machine without cutting comprises the following components: the fluid barrel is used for containing the magnetic fluid; and controlling the viscosity of the magnetic fluid by using a magnetic field; the cooling system is used for carrying away heat of the magnetic induction coil through the circulating flow of the transformer oil so as to prevent the magnetic induction coil from being overheated; the vibration module is used for applying vibration to the fluid barrel so as to simulate the vibration of the workpiece during actual cutting; the shell of the torque sensor is arranged on a frame of the milling machine, an input shaft of the torque sensor is sleeved on a milling cutter shaft, and the milling cutter shaft can drive the input shaft of the torque sensor to rotate, so that the torque force applied to the milling cutter shaft is detected through the torque sensor; the milling cutter shaft is driven by the transmission system and is provided with a milling cutter which is used for cutting; and the second triaxial acceleration sensor is arranged on the milling cutter shaft and used for detecting the vibration borne by the milling cutter shaft so as to measure the vibration value borne by the milling cutter shaft during processing.

Description

Device for measuring additional load loss coefficient of milling machine without cutting

Technical Field

The invention relates to a machine tool control and detection technology, in particular to a device for measuring the additional load loss coefficient of a milling machine without cutting.

Background

The additional loss coefficient of the machine tool is an important parameter for estimating the energy efficiency and the energy utilization rate of the machine tool, and a technical document 'research on an energy consumption online monitoring method based on the load loss characteristic of the numerical control machine tool' is disclosed in 'machine tool and hydraulic pressure' 2019, 9, month, 41, 17, and an author: zhao ping, huoshaohua, and the methods for detecting and converting the additional loss factor are mentioned in the above technical literature. The prior art mainly detects three parameters of main transmission system input power, non-processing state power value and cutting power at cutting time when the machine tool runs for calculation.

The existing detection mode is mainly to detect in the process of actually cutting a workpiece by a machine tool, obviously, a large amount of spare workpieces (metal materials) and tools are consumed, and the additional loss coefficient can be changed due to the working temperature of a main shaft and the structural change of the main shaft, and particularly, the additional loss coefficient of each machine tool even if the machine tool of the same type is in different working conditions, time and cutting states can be changed. Therefore, each machine tool needs to be regularly detected at present, and generally, tens of times or more of tests are needed for different cutting materials and different working conditions during detection, so that the materials for detection are obviously consumed in a large amount, and the cost is greatly increased. The inventor therefore proposes a device for measuring the additional load loss coefficient of a milling machine without cutting, which can complete the detection without actually cutting the material.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a device for measuring the additional load loss coefficient of a milling machine without cutting, which simulates a cut material by changing the viscosity of a magnetic fluid, thereby avoiding the waste of the cut material.

In order to achieve the purpose, the invention provides a device for measuring the additional load loss coefficient of a milling machine without cutting, which comprises a fluid barrel, a switch box and a coil barrel, wherein a hollow coil cavity is arranged in the coil barrel, the upper end and the lower end of the coil cavity are respectively sealed by a magnetic chuck and a magnetic separation disc, and the magnetic separation disc and the coil barrel are made of magnetic separation materials; an electromagnetic coil and an electromagnetic shaft are arranged in the coil cavity, and two ends of the electromagnetic shaft are respectively assembled with the magnetic suction disc and the magnetic separation disc; the electromagnetic coil generates a magnetic field after being electrified, the magnetic field acts on the magnetic fluid to change the viscosity of the magnetic fluid, and the cutting material is simulated through the viscosity of the magnetic fluid.

Preferably, the magnetic separation disc and the coil barrel are respectively assembled with the bottom of the fluid barrel and the top of the switch box, a first connecting flange is sleeved outside the switch box, the first connecting flange is fixedly assembled with a second connecting flange through a second bolt, the second connecting flange is installed on a support table, the support table is assembled with a first vibration module, and the first vibration module is used for applying vibration force to the fluid barrel to vibrate up and down along the axial direction of the fluid barrel; the first vibration module is also arranged on a third vibration frame, two third vibration frame plates and two third vibration frame sliding plates which are arranged in parallel are respectively arranged on the upper side and the lower side of the third vibration frame, the third vibration frame sliding plates can be axially and slidably sleeved on a vibration sliding shaft, two ends of the vibration sliding shaft are respectively assembled with the two second vibration frame mounting plates, and the third vibration frame can axially and reciprocally slide along the vibration sliding shaft;

one third vibration frame plate is assembled with a second vibration module, and the second vibration module is used for applying vibration reciprocating along the axial direction of the vibration sliding shaft to the third vibration frame;

the second vibration frame mounting panel is installed on the second vibration frame, still installs two second vibration frame plates that are parallel to each other on the second vibration frame, and two second vibration frame plates suit respectively on the vibration guiding axle, and the vibration guiding axle both ends are respectively with the riser assembly of putting on the shelf fixed, and two second vibration frame plates can be along vibration guiding axle endwise slip, and wherein a second vibration frame plate and the assembly of third vibration module, third vibration module are used for applying along the axial reciprocating vibration of vibration guiding axle to the second vibration frame.

Preferably, the first vibration module, the second vibration module and the third vibration module have the same structure and are vibration modules; the second vibration module and the third vibration module apply vibration to two mutually perpendicular diameter directions of the fluid barrel, so that three-axis vibration of the fluid barrel is realized through the first vibration module, the second vibration module and the third vibration module;

the fluid barrel is directly or indirectly provided with a first three-axis acceleration sensor which is used for detecting the acceleration of the fluid barrel on three axes and inputting signals into the industrial personal computer.

Preferably, the two upper frame vertical plates are both arranged on the upper frame, the upper frame is arranged on a frame body partition plate, the frame body partition plate is arranged with the frame body bottom plate in a lifting mode through a lifting mechanism, the lifting mechanism comprises a lifting sliding plate arranged on the frame body partition plate, the lifting sliding plate is arranged between a lifting lock plate and a lifting matching vertical plate, and the lifting lock plate presses the lifting sliding plate to the lifting matching vertical plate;

the lifting matching vertical plate is arranged on the lifting frame, the lifting frame is arranged on the bottom plate of the frame body, the lifting frame is also provided with a push rod motor and a lifting displacement sensor, and a push rod telescopic shaft of the push rod motor is assembled with the frame body partition plate; the input shaft of the lifting displacement sensor is assembled with the frame body partition plate.

Preferably, the lifting lock plate is fixedly assembled with one end of a lifting lock shaft, the other end of the lifting lock shaft is fixedly assembled with the unlocking inclined block after being sleeved with a second lifting pressure spring, a lifting partition plate and a lifting unlocking bar, the lifting partition plate is installed on the bottom plate of the frame body, and two ends of the second lifting pressure spring are respectively tightly pressed with the lifting partition plate and the lifting lock plate;

the lifting unlocking bar is provided with an unlocking inclined plane, a stop vertical plane and a sliding through groove respectively, the stop vertical plane is communicated with one end of the unlocking inclined plane, the sliding through groove penetrates through the lifting unlocking bar, the lifting lock shaft passes through the sliding through groove and then is assembled and fixed with the unlocking inclined block, and the lifting lock shaft can slide relative to the sliding through groove;

the unlocking inclined block is provided with a matching inclined plane and a matching vertical plane respectively, the matching inclined plane is attached to the unlocking inclined plane and assembled in a sliding mode, and the matching vertical plane can be attached to the stopping vertical plane so as to limit the maximum displacement of the lifting unlocking bar.

Preferably, two ends of the lifting unlocking bar are respectively assembled with a first locking bar end plate and a second locking bar end plate, the first locking bar end plate and the second locking bar end plate are respectively assembled and fixed with one end of a first locking plate guide shaft and one end of a second locking plate guide shaft, the other end of the first locking plate guide shaft penetrates through a lifting retaining plate and then is assembled and fixed with a lifting linkage plate through a lifting nut, and the lifting linkage plate can axially slide relative to the first locking plate guide shaft; the other end of the second lock plate guide shaft is sleeved with a first lifting spring and then penetrates through the lifting stress plate, the second lock plate guide shaft and the lifting stress plate can slide relatively, the lifting stress plate is installed on the lifting partition plate, the first lifting spring is used for applying elastic force for pushing the lifting unlocking bar to the lifting maintaining plate, so that the matching vertical face is attached to the stopping vertical face in the initial state, and the lifting lock plate is pressed against the lifting sliding plate; the lifting holding plate is mounted on the lifting partition plate.

Preferably, a lifting side guard plate is further mounted between the lifting partition plate and the lifting matching vertical plate, the lifting side guard plate is mounted on the frame body bottom plate, the lifting linkage plate is further fixedly assembled with one end of an unlocking telescopic shaft, the other end of the unlocking telescopic shaft penetrates through a lifting holding plate and then is loaded into an unlocking electromagnet, and the lifting electromagnet is mounted on the lifting frame;

the frame body partition plate is assembled with the top of the lifting sliding shaft, the bottom of the lifting sliding shaft is arranged in the lifting sliding cylinder and can be assembled with the lifting sliding cylinder in an axial sliding mode, and the lifting sliding shaft is installed on the frame body bottom plate in a lifting sliding mode.

Preferably, the displacement detection device further comprises a displacement detection assembly, wherein the displacement detection assembly comprises a first detection rod and a second detection rod, two ends of the first detection rod are respectively assembled and fixed with one end of the second detection rod and the supporting table, the other end of the second detection rod is assembled and fixed with a first detection seat, the first detection seat is provided with a first detection slide rail and a first detection vertical plate, the first detection vertical plate is assembled with an input shaft of a first displacement sensor, the first detection slide rail is clamped with the first detection guide rail, can slide and cannot move in the length direction of the second detection rod, the first detection guide rail is arranged on the second detection, and the first displacement sensor is arranged on the second detection seat; the second detection seat is also provided with a second detection vertical plate and a second detection slide rail, the second detection vertical plate is assembled with an input shaft of a second displacement sensor, the second displacement sensor is installed on a third detection seat, the third detection seat is also provided with a third detection guide rail, the third detection guide rail is clamped with the second detection slide rail, can slide and cannot move in the length direction of a second detection rod for assembly, the third detection seat is axially and slidably sleeved on a detection guide shaft, the detection guide shaft is installed on the upper frame, and the second detection rod penetrates through the through groove of the vibration plate and is not in contact with the detection guide shaft;

the third detection seat is assembled with one end of the pull rope, the other end of the pull rope rounds a guide wheel and then is loaded into the pull rope displacement sensor, the pull rope displacement sensor is installed on the upper frame, the guide wheel is sleeved on a guide wheel shaft in a circumferential rotating mode, the guide wheel shaft and the guide side plate are assembled in a circumferential rotating mode, and the guide side plate is installed on the upper frame.

Preferably, the cooling system comprises a coil barrel, transformer oil, a circulating pump and a heat exchanger, wherein a hollow coil cavity is formed in the coil barrel, and the coil cavity is filled with the transformer oil;

the bottom of the magnetic separation disc is provided with a sleeve ring, the outer part of the sleeve ring is sealed and sleeved with a switch box, the interior of the switch box is a hollow switch cavity, and the top of the switch cavity is sealed by the magnetic separation disc;

the inlet of the circulating pump is communicated with the coil cavity, the outlet of the circulating pump is communicated with the inlet of the heat exchanger, the outlet of the heat exchanger is communicated with the inlet of the check valve, the outlet of the check valve is connected into the coil cavity, a fan is arranged below the radiating fins of the heat exchanger, and the fan blows air to the radiating fins of the heat exchanger after being started so as to enable the radiating fins to radiate heat quickly;

the electromagnetic shaft is provided with a thermal sensing component, the temperature in the coil cavity is detected through the thermal sensing component, the thermal sensing component comprises a thermal sensing cavity arranged in the electromagnetic shaft, a switch air bag, a switch sliding plate, a thermal sensing power shaft and a switch spacer ring are sequentially arranged in the thermal sensing cavity from top to bottom, the switch air bag has elasticity and is filled with alcohol, the alcohol boils at 78 ℃, the bottom of the switch air bag is fixedly assembled with a switch sliding plate, the switch sliding plate is arranged at one end of a thermal power shaft, the other end of the thermal-sensitive power shaft penetrates through the switch spacing ring and the magnetic spacing disc and then is arranged in the switch chute and is assembled and fixed with the switch ring, the switch spacing ring is arranged at an opening at the bottom of the thermal sensing cavity, a thermal sensing return spring is sleeved on the part of the thermal sensing power shaft between the switch spacing ring and the switch sliding plate, and the thermal sensing return spring is used for applying elastic force for preventing the switch sliding plate from moving downwards; the switch sliding groove is arranged on the switch block, the switch block is arranged at the bottom of the magnetic separation disc and in the switch cavity, the switch block is sequentially provided with a first microswitch, a second microswitch and a third microswitch from top to bottom along the switch sliding groove, and the first microswitch, the second microswitch and the third microswitch can be respectively triggered after the switch ring moves downwards;

the trigger ends of the first micro switch and the second micro switch are respectively opposite to one end of a trigger shaft, a trigger ring is sleeved on the trigger shaft, the trigger ring is clamped with a trigger sliding hole and can be assembled in a sliding mode, the other end of the trigger shaft is arranged in a switch sliding groove, and the switch ring can drive the trigger shaft to move axially when the switch ring moves downwards; one end of the trigger sliding hole, which is far away from the switch sliding groove, is an open end and is closed by a trigger end cover, the trigger shaft penetrates through the trigger end cover and can be axially assembled with the trigger end cover in a sliding manner, the trigger end cover is arranged on the trigger sliding hole, and a part, which is positioned between the trigger end cover and the trigger ring, of the trigger shaft is sleeved with a trigger spring, the trigger spring is used for applying elastic force for pushing the trigger shaft to the switch sliding groove, so that the trigger shaft is not contacted with the trigger ends of the first micro switch and the second micro switch in an initial state, and the first micro switch and the second micro switch do not output signals at the moment;

the triggering end of the third microswitch is opposite to the switch ring in the axial direction of the thermal power shaft, and the third microswitch is triggered when the switch ring moves downwards to a maximum displacement point; the switch air bag is also internally provided with a memory spring, and the memory spring extends at 120 ℃ and shortens at 100 ℃ or below.

Preferably, the vibration module includes a switching component, a first vibration plate, a second vibration plate, a third vibration plate, a first vibration shaft, and a second vibration shaft, the second vibration plate is installed between the first vibration plate and the third vibration plate, the second vibration plate is fixedly assembled with one end of the vibration plate shaft, the other end of the vibration plate shaft passes through the third vibration plate and is axially slidably assembled with the third vibration plate, a first vibration spring and a second vibration spring are respectively sleeved on portions of the vibration plate shaft located at two sides of the third vibration plate, the third vibration plate is fixedly assembled with one end of the vibration side plate, the second vibration plate can axially move along the vibration plate shaft relative to the third vibration plate, and the first vibration spring and the second vibration spring are respectively used for providing elastic resistance to the axial movement of the vibration plate shaft;

one ends of the first vibration shaft and the second vibration shaft penetrate through the second vibration plate and then are assembled with the first vibration plate, and the first vibration shaft and the second vibration shaft are respectively assembled with the second vibration plate in a non-axial movable mode; the first vibrating plate intermittently applies pulling force through a vibrating roller to realize vibration, the vibrating roller is sleeved on the vibrating roller in a circumferential rotating mode, two ends of the vibrating roller are respectively assembled with a vibrating shaft sleeve, the vibrating shaft sleeve is installed at one end of a distance adjusting sliding block, the other end of the distance adjusting sliding block is installed in a distance adjusting sliding groove and is assembled with the distance adjusting sliding groove in a sliding mode, the distance adjusting sliding groove is arranged in the radial direction of a distance adjusting disc, the distance adjusting disc is sleeved and fixed on a vibrating power shaft, a distance adjusting pin is arranged at one end, installed in the distance adjusting sliding groove, of the distance adjusting sliding block, is clamped with the distance adjusting sliding groove and is assembled in an axial sliding mode, and the distance adjusting arc groove is arranged on a fixed disc;

the fixed disc is coaxially assembled and fixed with one end of the distance adjusting cylinder, the other end of the distance adjusting cylinder penetrates through the second vibrating vertical plate and then is installed in the switching assembly and is assembled and fixed with the third vibrating gear, the second vibrating vertical plate is installed on the bottom plate of the switching frame, the distance adjusting cylinder and the second vibrating vertical plate can rotate circumferentially and cannot move axially, the vibrating power shaft penetrates through the distance adjusting cylinder and can rotate and assemble circumferentially relative to the distance adjusting cylinder, two ends of the vibrating power shaft respectively penetrate through one switching assembly and then are assembled with the first vibrating vertical plate in a rotating manner, and one end of the vibrating power shaft penetrates through one first vibrating vertical plate and then is connected and fixed with an output shaft of the vibrating motor; the distance between the two ends of the distance-adjusting arc groove and the axis of the distance-adjusting disc is different.

The invention has the beneficial effects that:

1. the magnetic fluid replaces the traditional material for cutting, so that non-cutting measurement can be realized, and the performance of different materials can be simulated by changing the intensity of the magnetic field applied to the magnetic fluid, so that the working condition of cutting the material can be relatively really reduced. Since no actual cutting material is required, the cost can be greatly reduced. The lifting mechanism can realize the lifting of the fluid barrel, so that the cutting depth during cutting can be simulated, and the actual cutting state can be better restored.

2. The cooling system circulates the transformer oil so as to realize the heat dissipation of the electromagnetic coil, thereby avoiding the burning of the electromagnetic coil caused by overlarge heat when the electromagnetic coil is used for a long time. The heat sensing assembly of the invention boils alcohol through the oil temperature in the coil barrel, and the memory spring extends, so that the trigger ring respectively triggers the first micro switch and the second micro switch, thereby realizing the overheat protection in the coil barrel.

3. According to the invention, the three-axis vibration of the fluid barrel can be realized through the vibration module, so that the vibration of the material can be simulated during material cutting, the working condition of the actual cut material can be more truly restored, and the influence of system errors on the final measurement precision can be reduced. The switching assembly can realize synchronous and asynchronous driving of the vibration shaft and the vibration adjusting cylinder, so that vibration of the fluid barrel and amplitude adjustment are realized.

Drawings

Fig. 1-20 are schematic structural views of the present invention. Fig. 6 is a schematic structural view of the frame body base plate 110 removed; fig. 7 is a schematic structural view of the shelf with the upper portion of the shelf partition 120 removed; fig. 15 is a sectional view at a central plane where the axis of the first vibration shaft a210 is located; FIG. 16 is an enlarged view at F1 of FIG. 15; fig. 18 is a sectional view of a heat sensing power shaft 940 with its axis at the center plane; FIG. 19 is an enlarged view at F2 of FIG. 18; fig. 20 is a sectional view of the center plane of the axis of the switching telescopic shaft a 311.

Fig. 21-23 are schematic structural views of the displacement detecting assembly.

Fig. 24 is a sectional view at the center plane of the axis of the lift lock shaft 650 of the lift mechanism.

Fig. 25 to 26 are schematic structural views of the vibration module.

Fig. 27-30 are schematic structural diagrams of a switching assembly. In which a section view taken at the center plane of the axis of the switching slide shaft a960 is shown in fig. 30.

Fig. 31 is a schematic view of the structure at the fixed disk.

Fig. 32 is a schematic structural view of the milling cutter shaft B200 with a torsion sensor B300 and a second triaxial acceleration sensor B400 added thereto.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 32, the device for measuring the additional load loss coefficient of the milling machine without cutting in the embodiment includes:

a fluid tank 410 for containing magnetic fluid; the magnetic field generated by the magnetic induction coil 370 is used for controlling the magnetic field intensity of the magnetic fluid so as to control the viscosity of the magnetic fluid, thereby simulating the corresponding material performance;

a cooling system for circulating the transformer oil to remove heat of the magnetic induction coil 370 to prevent the magnetic induction coil from being overheated;

a vibration module a for applying vibration to the fluid tub 410, thereby simulating vibration of the workpiece at the time of actual cutting;

the shell of the torque sensor B300 is arranged on a frame B100 of the milling machine, an input shaft of the torque sensor B300 is sleeved on a milling cutter shaft B200, and the milling cutter shaft B200 can drive the input shaft of the torque sensor B300 to rotate, so that the torque force applied to the milling cutter shaft B200 is detected through the torque sensor; the milling cutter shaft B200 is driven by a transmission system, and a milling cutter is arranged on the milling cutter shaft B200 and used for cutting;

and the second triaxial acceleration sensor B400 is arranged on the milling cutter shaft B200 and is used for detecting the vibration borne by the milling cutter shaft B200 so as to measure the vibration value borne by the milling cutter shaft B200 during processing.

The operation process of this embodiment is as follows:

s1, respectively installing a second triaxial acceleration sensor B400 and a torsion sensor B300 on the milling cutter shaft B200;

s2, pouring the magnetic fluid into the fluid cavity 411 of the fluid barrel 410, electrifying the magnetic induction coil 370, recording the current value electrified to the magnetic induction coil, calculating the field intensity generated by the magnetic induction coil, and adsorbing the magnetic fluid by the magnetic induction coil generated magnetic field so as to change the viscosity of the magnetic fluid; the power supply circuit of the electromagnetic coil is provided with an ammeter, and the power supply current of the electromagnetic coil is detected through the ammeter;

and S3, immersing the milling cutter into the magnetic fluid, wherein the immersion depth is the cutter feeding depth, then the power system drives the milling cutter shaft until the milling cutter shaft can rotate, the power input by the power system and the torsion detected by the torsion sensor are recorded, and the torsion is converted through the torsion. The torsion force borne by the milling cutter shaft is detected by the torsion sensor, and a conversion formula among the current value of the magnetic induction coil, the power value input by the power system and the torsion value detected by the torsion sensor can be established through a plurality of experiments, wherein the conversion formula is named as a torsion conversion formula; after the torque conversion formula is obtained, the power at the milling cutter shaft can be calculated according to the current input value of the magnetic induction coil and the power value input by the power system (the torque sensor can be removed at the later stage). The power at the milling cutter shaft, the input power of the power system, the idle running power and the like can be converted into the load loss coefficient. The input current, voltage and power of the power system are respectively detected by an ammeter, a voltmeter and a power meter.

And S4, obtaining cutting power of different cutting materials and the milling cutter shaft during working through continuously and singly changing the input current value of the electromagnetic coil and the input power value of the power system of the machine tool, thereby obtaining a plurality of groups of load loss coefficients, and drawing a drawing for final determination of the subsequent load loss coefficients.

And S5, detecting the vibration direction and amplitude of the milling cutter shaft through the second triaxial acceleration sensor, so as to find out the correlation between the load loss coefficient and the vibration of the milling cutter shaft for subsequent error correction, thereby improving the final measurement precision.

Referring to fig. 1 to 32, a hollow fluid chamber 411 is formed inside the fluid barrel 410, a fluid-shaped magnetic fluid is filled in the fluid chamber 411, the bottom of the fluid barrel 410 is mounted on a magnetic chuck 430, a plurality of magnetic attraction shafts 440 are mounted at the bottom of the magnetic chuck 430, an electromagnetic coil 370 is mounted outside the magnetic attraction shafts 440, a magnetic field is generated after the electromagnetic coil is powered on, and the generated magnetic field magnetizes the magnetic attraction shafts 440 and the magnetic chuck 430 which are made of soft iron, so that an upper magnetic field is applied to the magnetic fluid to change the viscosity and the state of the magnetic fluid.

In the embodiment, the electrifying time of the electromagnetic coil is generally longer, and the electromagnetic coil generates a large amount of heat after being electrified, so that the electromagnetic coil is inevitably burnt if the heat is not dissipated in time, even electric fire is caused, and great potential safety hazards exist. The inventor designs a cooling system specially for cooling the electromagnetic coil, the cooling system comprises a coil barrel 450 and transformer oil, a hollow coil cavity 451 is formed inside the coil barrel 450, the electromagnetic coil 370 and the electromagnetic shaft 440 are both installed in the coil cavity 451, the coil cavity 451 is filled with the transformer oil, the upper end and the lower end of the coil cavity 451 are respectively sealed by a magnetic chuck 430 and a magnetic separation disk 470, and the magnetic separation disk 470 and the coil barrel 450 are made of magnetic separation materials. The electromagnetic shaft 440 is assembled with the magnetic chuck 430 and the magnetic partition plate 470 at two ends respectively, the sleeving ring 471 is installed at the bottom of the magnetic partition plate 470, the sleeving ring 471 is externally sealed and sleeved with the switch box 460, the switch box 460 is internally provided with a hollow switch cavity 461, the top of the switch cavity 462 is sealed with the magnetic partition plate 470, and the switch flange 523 is sleeved outside the switch box 460.

The electromagnetic shaft 440 is provided with a thermal sensing component, the temperature in the coil cavity 451 is detected through the thermal sensing component, the thermal sensing component comprises a thermal sensing cavity 441 arranged in the electromagnetic shaft 440, a switch air bag 910, a switch sliding plate 930, a thermal sensing power shaft 940 and a switch spacing ring 442 are sequentially arranged in the thermal sensing cavity 441 from top to bottom, the switch air bag 910 has elasticity and is filled with alcohol, the alcohol boils around 78 ℃, the bottom of the switch air bag 910 is fixedly assembled with the switch sliding plate 930, the switch sliding plate 930 is arranged at one end of the thermal sensing power shaft 940, the other end of the thermal sensing power shaft 940 penetrates through the switch spacing ring 442 and the magnetic spacing disc 470 and is then arranged in a switch sliding groove 971 and fixedly assembled with the switch ring 960, the switch spacing ring 442 is arranged at an opening at the bottom of the thermal sensing cavity 441, a thermal sensing return spring 950 is sleeved on the part of the thermal sensing power shaft 940 between the switch spacing ring 442 and the switch sliding plate 930, the thermal sensing return spring 950 is used for applying an elastic force to the switch sliding plate 930 to prevent the switch sliding plate from moving downwards; the switch chute 971 is arranged on the switch block 970, the switch block 970 is arranged at the bottom of the magnetic separation disc 470 and in the switch cavity 461, the switch block 970 is sequentially provided with a first micro switch 381, a second micro switch 382 and a third micro switch 383 from top to bottom along the switch chute 971, the triggering ends of the first micro switch 381 and the second micro switch 382 are respectively right opposite to one end of a triggering shaft 980, the triggering shaft 980 is sleeved with a triggering ring 981, the triggering ring 981 is clamped with a triggering sliding hole 972 and can be assembled in a sliding manner, the other end of the triggering shaft 980 is arranged in the switch chute 971, and the switch ring 960 can drive the triggering shaft 980 to move axially when the switch ring 960 moves downwards; trigger slide opening 972 and keep away from switch spout 971 one end and seal for open end and this end through trigger end cap 982, but trigger shaft 980 passes trigger end cap 982 and the assembly of axial sliding with it, but trigger end cap 982 is installed on trigger slide opening 972 and trigger shaft 980 is located trigger end cap 982, the cover is equipped with trigger spring 990 on the part between the trigger ring 981, trigger spring 990 is used for exerting the elasticity that promotes to switch spout 971 to trigger shaft 980 (trigger ring 981), thereby make when trigger shaft 980 initial state not with first micro-gap switch, second micro-gap switch's trigger end contact, first micro-gap switch, second micro-gap switch do not output signal this moment. The trigger end of the third micro switch 383 is opposite to the switch ring 960 in the axial direction of the thermal power shaft 940, and when the switch ring 960 moves down to the maximum displacement point, the third micro switch 383 is triggered.

Preferably, a memory spring 920 is further installed in the switching balloon 910, and the memory spring is extended at 120 ℃ and shortened at 100 ℃ or less. When the electromagnetic switch is used, the heat of the electromagnetic shaft 440 is transmitted into the switch air bag 910, when the temperature reaches 78 ℃, alcohol is boiled, a large amount of steam is generated, the steam drives the switch air bag 910 to expand, so that the switch sliding plate 930 and the thermal power shaft 940 overcome the elastic force of the thermal reset spring 950 to move downwards, the switch ring 960 moves downwards after moving downwards, the trigger shaft 980 corresponding to the first micro switch 381 is driven firstly, and the circulating pump and the fan start to operate after the first micro switch is triggered; as the temperature continues to rise, the alcohol continues to boil, so that the driving switch ring continues to move downwards, so that the trigger shaft corresponding to the second microswitch 382 triggers the second microswitch, and at the moment, the circulating pump and the fan run at full power. Once the temperature reaches 120 ℃ and above, the memory spring 920 is extended, so that the driving switch ring 960 continues to move downwards until the third micro switch 383 is triggered, and the electromagnetic coil is powered off after the third micro switch 383 is triggered. In the subsequent temperature reduction process, the memory spring can be gradually shortened and reset, the alcohol can be gradually liquefied, and the switch air bag can be contracted and reset through self-generated elasticity, so that the switch ring 960 is moved upwards and reset.

Preferably, switch ring arc surfaces 961 are arranged on the side walls of the switch ring 960 corresponding to the trigger shaft 980 respectively, and the switch ring arc surfaces 961 are used for applying an axial pushing force to the trigger shaft 980 so as to push the trigger shaft 980 away.

Signals of the first microswitch, the second microswitch and the third microswitch are all connected into the industrial personal computer, when the first microswitch is triggered for the first time, the industrial personal computer starts the circulating pump 364 and the fan so as to start cooling transformer oil, and at the moment, the circulating pump 364 and the fan are both in normal power; when the second microswitch is triggered for the first time, the industrial personal computer judges that the second microswitch is overheated, and then the circulating pump 364 and the fan are controlled to run in a maximum power state; when the third microswitch is triggered, the industrial personal computer judges that the third microswitch is overheated, the current of the electromagnetic coil is cut off, and the electromagnetic coil stops working. In this embodiment, a coil contactor is connected in series to a power supply circuit of the electromagnetic coil, a stationary contact of the coil contactor is electrically connected to a power supply, a normally open contact of the coil contactor is electrically connected to the electromagnetic coil, and a control end of the coil contactor is electrically connected to a signal end of the industrial personal computer, so that the industrial personal computer can control opening and closing of the coil contactor (the normally open contact and the stationary contact are closed).

The power supply circuits of the circulating pump 364 and the fan are respectively and electrically connected with normally open contacts of a circulating pump 364 contactor and a fan contactor, stationary contacts of the circulating pump 364 contactor and the fan contactor are respectively and electrically connected with output ends of a circulating pump 364 frequency converter and a fan frequency converter, the circulating pump 364 contactor and the fan contactor are respectively used for controlling the on-off of currents of the circulating pump 364 and the fan, and the circulating pump 364 frequency converter and the fan frequency converter are respectively used for controlling the input power of the circulating pump 364 and the fan so as to control the running power values of the circulating pump 364 and the fan; the incoming end and the power electricity of circulating pump 364 converter, fan converter are connected, the control end of circulating pump 364 converter, fan converter, circulating pump 364 contactor, fan contactor is connected with the signal end electricity of industrial computer respectively to can make the industrial computer can control the running state of circulating pump 364 converter, fan converter, circulating pump 364 contactor, fan contactor. The inlet of the circulating pump 364 is communicated with the coil cavity 451, the outlet of the circulating pump 364 is communicated with the inlet of the heat exchanger 362, the outlet of the heat exchanger 362 is communicated with the inlet of the check valve 361, the outlet of the check valve 361 is connected into the coil cavity 451, a fan 363 is installed below the radiating fins of the heat exchanger 362, and after the fan 363 is started, air is blown to the radiating fins of the heat exchanger 362 to enable the radiating fins to radiate heat quickly.

Preferably, because the system leaks and the transformer oil is lost in the actual use process, the transformer oil needs to be timely supplemented to the coil cavity 451, and this embodiment is implemented by an oil supplementing mechanism, where the oil supplementing mechanism includes a storage tank 420, a hollow storage cavity 421 is inside the storage tank 420, the top of the storage cavity 421 is communicated with one end of the filling pipe 510, and the storage cavity 421 can be filled with the transformer oil through the filling pipe in use. The bottom of the storage cavity 421 is communicated with the top of an oil supplementing conical hole 481 in an oil supplementing block 480, the oil supplementing block 480 is installed on the storage tank 420, an oil supplementing slide hole 482 is further arranged in the oil supplementing block 480, the oil supplementing conical hole 481 and the oil supplementing slide hole 482 are respectively clamped, sealed and assembled with an oil supplementing circular truncated cone 860 in an axial sliding manner, and an oil supplementing communication hole 452 for communicating the oil supplementing conical hole 481 with the coil cavity 451 is formed in the side wall of the oil supplementing conical hole 481 and the side wall of the coil barrel 450; the oil supplementing slide hole 482 is also communicated with a detection air cavity 811 in the detection air bag 810 through a communicating pipe 820, the oil supplementing slide hole 482 is positioned below the assembling position of the communicating pipe 820 and is clamped, sealed and axially slidably provided with an oil supplementing resistance ring 840, an oil supplementing spring 830 is arranged between the oil supplementing resistance ring 840 and an oil supplementing cone 860, and the oil supplementing spring 830 is used for applying elastic force to the oil supplementing cone 860 to push the oil supplementing cone 481, so that the oil supplementing cone 481 is sealed by the oil supplementing cone 860 together with air pressure in the detection air bag in an initial state. But oil supplementing resistance ring 840 and oil supplementing adjusting screw 850 one end circumferencial rotation, axial displacement assembly not, oil supplementing adjusting screw 850 other end is worn out oil supplementing piece 480 and is closed the assembly soon through the screw thread with oil supplementing piece 480. When the resistance of the oil supplementing circular truncated cone 860 to move downwards and open needs to be adjusted, the oil supplementing adjusting screw 850 only needs to be rotated circumferentially, so that the thrust applied to the oil supplementing spring 830 by the oil supplementing resistance ring 840 is adjusted. The oil supply resistance ring 840 divides the lower part of the oil supply sliding hole 482 into a sealed oil supply movable cavity 483.

The detection airbag 810 is installed at the bottom of the coil cavity 451, the detection airbag 810 is filled with pressurized gas, and the detection airbag 810 has elasticity. When the oil-supplementing device is used, the transformer oil is directly pressed on the detection air bag 810, so that the detection air bag 810 is extruded to increase the internal air pressure, and the air pressure and the oil-supplementing spring 830 can apply elastic force to the oil-supplementing circular truncated cone 860 to prevent the oil-supplementing circular truncated cone from moving downwards after being increased. After the transformer oil in the coil cavity 451 is reduced, the pressure borne by the detection air bag 810 is reduced, and the detection air bag 810 is expanded, so that the internal air pressure is reduced, after the air pressure is reduced to a preset value, because the elastic force of the oil supplementing spring cannot apply enough supporting force to the oil supplementing circular table body 860, the oil supplementing circular table body 860 moves downwards, the oil supplementing conical hole 481 is opened, the transformer oil in the storage cavity 421 enters the transformer oil amount in the coil cavity 451 through the oil supplementing communication hole 452, until the transformer oil in the coil cavity 451 applies enough pressure to the detection air bag again, when the elasticity of the air pressure matching oil supplementing spring in the detection air bag is larger than the gravity of the oil supplementing circular table body 860, the oil supplementing circular table body 860 moves upwards to reset and reseals the oil supplementing conical hole 481.

The storage tank 420 is assembled with the switch flange 523 by the first bolt, thereby achieving the assembly of the coil barrel with the storage tank 420. The outer side of the switch box 460 is further sleeved with a first connecting flange 521, the first connecting flange 521 is fixedly assembled with a second connecting flange 522 through a second bolt, the second connecting flange 522 is installed on the supporting platform 190, the supporting platform 190 is assembled with a first vibration module, and the first vibration module is used for applying a vibration force to the fluid barrel 410 to vibrate up and down along the axial direction of the fluid barrel. Circulating pump, fan, check valve, heat exchanger all pass through the support mounting on third vibration frame 180, and first vibration module is also installed on third vibration frame 180, but two third vibration frame plate 181, two third vibration frame slide 182 of parallel installation each other are installed respectively to the upper and lower both sides of third vibration frame 180, but third vibration frame slide 182 suit is on vibration slide 260 with endwise slip, vibration slide 260 both ends assemble with two second vibration frame mounting panels 163 respectively, third vibration frame 180 can be along the reciprocal slip of vibration slide 260 endwise. One of the third vibration frame plates 181 is assembled with a second vibration module for applying vibration reciprocating in the axial direction of the vibration slide shaft 260 to the third vibration frame 180.

Second vibration frame mounting plate 163 is installed on second vibration frame 160, still install two second vibration frame plates 161 that are parallel to each other on the second vibration frame 160, a vibration board leads to groove 162, two second vibration frame plates 161 suit respectively on vibration guiding axle 240, vibration guiding axle 240 both ends respectively with last set up board 151 assembly fixed, two second vibration frame plates 161 can be along vibration guiding axle 240 endwise slip, one of them second vibration frame plate 161 and the assembly of third vibration module, the third vibration module is used for exerting along the axial reciprocating vibration of vibration guiding axle 240 to second vibration frame 160. The first vibration module, the second vibration module and the third vibration module are of the same structure and are vibration modules A. The second vibration module and the third vibration module apply vibration to two mutually perpendicular diameter directions of the fluid barrel 410, so that three-axis vibration of the fluid barrel 410 is realized through the first vibration module, the second vibration module and the third vibration module, and vibration and tremor generated during workpiece processing are relatively and truly reduced.

Two upper vertical plates 151 are all installed on the upper frame 150, the upper frame 150 is installed on the frame body partition plate 120, the frame body partition plate 120 is installed in a lifting mode with the frame body bottom plate 110 through a lifting mechanism, the lifting mechanism comprises a lifting sliding plate 121 installed on the frame body partition plate 120, the lifting sliding plate 121 is installed between a lifting locking plate 640 and a lifting matching vertical plate 1111, the lifting locking plate 640 compresses the lifting sliding plate 121 towards the lifting matching vertical plate 1111, and therefore the lifting sliding plate 121 cannot move up and down to fix the distance between the frame body partition plate 120 and the frame body bottom plate 110 relatively. The lifting matching vertical plate 1111 is arranged on the lifting frame 111, the lifting frame 111 is arranged on the frame body bottom plate 110, the lifting frame 111 is further provided with a push rod motor 320 and a lifting displacement sensor 350, and a push rod telescopic shaft 321 of the push rod motor 320 is assembled with the frame body partition plate 120. The push rod motor 320 can drive the push rod telescopic shaft 321 to axially move after being started, so as to adjust the distance between the frame partition 120 and the frame base plate 110, and the design is mainly used for simulating the feed depth of the milling cutter. Preferably, mutually engaged protrusions and grooves are arranged between the mutually contacting surfaces of the lifting lock plate 640 and the lifting slide plate 121, so that the lifting lock plate 640 and the lifting slide plate 121 do not move relatively when the lifting lock plate 640 and the lifting slide plate 121 are pressed tightly. The lifting lock plate 640 is fixedly assembled with one end of the lifting lock shaft 650, the other end of the lifting lock shaft 650 is fixedly assembled with the unlocking inclined block 630 after being sleeved with the second lifting pressure spring 642, the lifting partition plate 140 and the lifting unlocking strip 620, the lifting partition plate 140 is installed on the frame body base plate 110, two ends of the second lifting pressure spring 642 are respectively pressed against the lifting partition plate 140 and the lifting lock plate 640, and therefore elasticity for pushing the lifting slide plate 121 is applied to the lifting lock plate 640. The lifting unlocking bar 620 is provided with an unlocking inclined plane 621, a stopping vertical plane 622 and a sliding through groove 623 respectively, the stopping vertical plane 622 is communicated with one end of the unlocking inclined plane 621, the sliding through groove 623 penetrates through the lifting unlocking bar 620, the lifting lock shaft 650 penetrates through the sliding through groove 623 and then is fixedly assembled with the unlocking inclined block 630, and the lifting lock shaft 650 can slide relative to the sliding through groove 623. The unlocking inclined block 630 is respectively provided with a matching inclined surface 631 and a matching vertical surface 632, the matching inclined surface 631 is attached to the unlocking inclined surface 621 and can be assembled in a sliding manner, and the matching vertical surface 632 can be attached to the stopping vertical surface 622 so as to limit the maximum displacement of the lifting unlocking bar 620; the unlocking inclined surface 621 can drive the matching inclined surface 631 to axially move along the lift lock shaft 650 when moving, so as to drive the lift lock plate 640 to move relative to the lift slide plate 121 to realize unlocking or locking. The two ends of the lifting unlocking bar 620 are respectively assembled with a first locking bar end plate 624 and a second locking bar end plate 625, the first locking bar end plate 624 and the second locking bar end plate 625 are respectively assembled and fixed with one end of a first locking plate guide shaft 230 and one end of a second locking plate guide shaft 250, the other end of the first locking plate guide shaft 230 passes through a lifting retaining plate 141 and then is assembled and fixed with a lifting linkage plate 610 through a lifting nut 231, and the lifting linkage plate 610 can axially slide relative to the first locking plate guide shaft 230; the other end of the second lock plate guide shaft 250 is sleeved with a first lifting spring 641 and then penetrates through the lifting stress plate 142, the second lock plate guide shaft 250 and the lifting stress plate 142 can slide relatively, the lifting stress plate 142 is installed on the lifting partition plate 140, and the first lifting spring 641 is used for applying an elastic force to the lifting unlocking bar 620 to push the lifting holding plate 141, so that in an initial state, the matching elevation 632 is attached to the stopping elevation 622, and the lifting lock plate 640 presses the lifting slide plate 121; the elevation maintaining plate 141 is installed on the elevation partition 140.

A lifting side guard plate 112 is further installed between the lifting partition plate 140 and the lifting matching vertical plate 1111, the lifting side guard plate 112 is installed on the frame body bottom plate 110, and an input shaft of the lifting displacement sensor 350 is assembled with the frame body partition plate 120, so as to detect the lifting displacement amount of the frame body partition plate 120. The lifting linkage plate 610 is fixedly assembled with one end of the unlocking telescopic shaft 310, the other end of the unlocking telescopic shaft 310 penetrates through the lifting holding plate 141 and then is installed in the unlocking electromagnet 310, the unlocking electromagnet 310 can drive the unlocking telescopic shaft 310 to move towards the inside after being started, so that the lifting unlocking bar 620 is driven to overcome the elastic force of the first lifting spring to move, the unlocking inclined plane 621 is attached to the matching inclined plane 631 at different positions, the lifting locking shaft 650 is driven to overcome the elastic force of the second lifting spring to drive the lifting locking plate 640 to be far away from the lifting sliding plate 121 to move so as to achieve unlocking, and the lifting sliding plate 121 can move up and down after unlocking. The lifting electromagnet 310 is installed on the lifting frame 111.

Preferably, the frame partition 120 is assembled with the top of the lifting slide shaft 210, the bottom of the lifting slide shaft 210 is installed in the lifting slide barrel 220 and is axially slidably assembled with the lifting slide barrel, and the lifting slide barrel 220 is installed on the frame base plate 110. The top of the two upper shelf plates 151 is assembled with the shelf top plate 130, and the shelf top plate 130 is not higher than the top of the fluid bucket 410. The storage tank 420 or the fluid barrel 410 is provided with a first triaxial acceleration sensor 340, the first triaxial acceleration sensor 340 is used for detecting the acceleration of the fluid barrel 410 in three axes and inputting signals into an industrial personal computer, and the design is mainly used for detecting the simulated workpiece vibration.

Preferably, since the amplitude of vibration of the fluid barrel 410 directly affects the depth of cut of the milling cutter when the fluid barrel 410 vibrates in the height direction, the depth of cut of the milling cutter (the height change of the fluid barrel 410) is detected in real time, for this reason, the inventor has designed the displacement detection assembly 700, the displacement detection assembly 700 includes a first detection rod 171 and a second detection rod 172, two ends of the first detection rod 171 are respectively assembled and fixed with one end of the second detection rod 172 and the supporting base 190, the other end of the second detection rod 172 is assembled and fixed with the first detection base 710, the first detection base 710 is mounted with a first detection slide 711 and a first detection vertical plate 712, the first detection vertical plate 712 is mounted with an input shaft of the first displacement sensor 760, the first detection slide 711 is engaged with a first detection guide 723, slidably and immovably mounted in the length direction of the second detection rod 172, the first detection guide 723 is mounted on the second detection base 720, the first displacement sensor 760 is mounted on the second probe mount 720; the second detection seat 720 is further provided with a second detection vertical plate 722 and a second detection sliding rail 721, the second detection vertical plate 722 is assembled with an input shaft of a second displacement sensor 770, the second displacement sensor 770 is installed on a third detection seat 730, the third detection seat 730 is further provided with a third detection guide rail 731, the third detection guide rail 731 is clamped with the second detection sliding rail 721, can slide and cannot be assembled in a movable manner in the length direction of the second detection rod 172, the third detection seat 730 is axially slidably sleeved on the detection guide shaft 790, the detection guide shaft 790 is installed on the upper frame 150, and the second detection rod 172 penetrates through the through groove vibration plate 162 and does not contact with the through groove vibration plate 162, so that the second vibration frame 160 can be prevented from influencing the detection result. The third detecting seat 730 is assembled with one end of a pulling rope 781, the other end of the pulling rope 781 is wound around a guide wheel 751 and then is installed in a pulling rope displacement sensor 780, the pulling rope displacement sensor 780 is installed on the upper frame 150, the guide wheel 751 is sleeved on a guide wheel shaft 750 in a circumferential rotating mode, the guide wheel shaft 750 is assembled with a guide side plate 740 in a circumferential rotating mode, and the guide side plate 740 is installed on the upper frame 150.

During the use, the triaxial displacement that the brace table 190 received can all be applyed on first probe seat 710 through second probe rod 172 to drive first probe seat 710, second probe seat 720, third probe seat 730 relative movement, then through first displacement sensor, the second displacement sensor, the displacement amount is surveyed respectively to the stay cord displacement sensor, at last with relevant signal input industrial computer, can survey the range of vibration like this on the one hand, on the other hand can calculate the depth of cut of milling cutter, thereby provide the basis in order to improve final load loss coefficient precision for subsequent error compensation.

The vibration module a includes a switching component a900, a first vibration plate a110, a second vibration plate a120, a third vibration plate a130, a first vibration axis a210, and a second vibration axis a220, the second vibration plate a120 is installed between the first vibration plate a110 and the third vibration plate a130, the second vibration plate a120 is fixedly assembled with one end of a vibration plate axis a230, the other end of the vibration plate axis a230 passes through the third vibration plate a130 and is axially slidably assembled therewith, a first vibration spring a411 and a second vibration spring a412 are respectively sleeved on portions of the vibration plate axis a230 located at both sides of the third vibration plate a130, the third vibration plate a130 is fixedly assembled with one end of a vibration side plate 191, the other end of the vibration side plate 191 is fixedly assembled with one end of a first vibration frame 180 (first vibration module), a second vibration frame 160 (second vibration module), and an upper frame 150 (third vibration module), the second vibration plate a120 is axially movable along the vibration plate axis a230 with respect to the third vibration plate a130, the first vibration spring a411 and the second vibration spring a412 are respectively used for providing elastic resistance to the axial movement of the vibration plate shaft a 230.

A vibrating plate shaft A230 of the first vibrating module is assembled with the supporting table 190, vibrating plate shafts A230 of the second vibrating module and the third vibrating module are respectively assembled with a vibrating plate A01, and vibrating plate shafts A01 of the second vibrating module and the third vibrating module are respectively assembled with a first vibrating frame plate 181 and a second vibrating frame plate 161;

the first vibration axis a210 of the first vibration module is fixedly assembled with the switch box 460, and the second vibration axis a210 of the first vibration module is axially slidably assembled with the third vibration plate a 130; the first vibration shafts A210 of the second vibration module and the third vibration module are respectively assembled with a vibration shaft plate A01;

one end of each of the first vibration axis a210 and the second vibration axis a220 passes through the second vibration plate a120 and then is assembled with the first vibration plate a110, the first vibration axis a210 and the second vibration axis a220 are respectively assembled with the second vibration plate a120 in a non-axial movable manner, when the first vibration plate a110 receives an axial acting force of the first vibration axis a210, the first vibration plate a110 drives the first vibration axis a210 and the second vibration axis a220 to synchronously move, so that the second vibration plate a120, the vibration axis plate a01 and the switch box 460 (support table 190) are driven to synchronously move, and three-axis vibration is applied to the first vibration frame plate 181, the second vibration frame plate 161 and the switch box 460 (fluid barrel 410).

The first vibrating plate A110 intermittently applies pulling force through a vibrating roller A260 to realize vibration, the vibrating roller A260 is sleeved on a vibrating roller A250 in a circumferential rotating mode, two ends of the vibrating roller A250 are respectively assembled with a vibrating shaft sleeve A550, the vibrating shaft sleeve A550 is installed at one end of a distance adjusting slider A530, the other end of the distance adjusting slider A530 is installed in a distance adjusting chute A521 and is assembled with the distance adjusting chute A521 in a sliding mode, the distance adjusting chute A521 is arranged in the radial direction of a distance adjusting disc A520, the distance adjusting disc A520 is sleeved and fixed on a vibrating power shaft A240, one end, where the distance adjusting slider A530 is installed in the distance adjusting chute A521, is provided with a distance adjusting pin A531, the distance adjusting pin A531 is installed in a distance adjusting arc groove A511 and is clamped with the distance adjusting arc groove A511 and is assembled in an axial sliding mode, the distance adjusting arc groove A511 is arranged on a fixed disc A510, the fixed disc A510 and one end of a fixed disc A540 are coaxially assembled and fixed, the other end of the distance adjusting disc A540 passes through a second vibrating roller A940 and then is installed in a switching assembly A900 and is assembled with a third vibrating gear A900, the second vibrating vertical plate A940 is mounted on a switching frame bottom plate A913, the distance adjusting cylinder A540 and the second vibrating vertical plate A940 can rotate circumferentially and cannot move axially, the vibrating power shaft A240 penetrates through the distance adjusting cylinder A540 and can rotate relative to the distance adjusting cylinder A940 circumferentially, two ends of the vibrating power shaft A240 respectively penetrate through a switching assembly A900 and then can rotate circumferentially with the first vibrating vertical plate A920, one end of the vibrating power shaft A240 penetrates through one of the first vibrating vertical plates A920 and then is connected and fixed with an output shaft of the vibrating motor A320 through a coupler, and the vibrating motor A320 can drive the vibrating power shaft A240 to rotate circumferentially after being started, so that the vibrating roller A260 is driven by the distance adjusting plate A520 to rotate circumferentially with the axis of the distance adjusting plate A520 as the center, and the vibrating roller A260 acts on the first vibrating plate A110 intermittently to apply thrust to the first vibrating plate. The distance between the two ends of the distance-adjusting arc groove A511 and the axis of the distance-adjusting disk is different, so that when the different positions of the distance-adjusting arc groove A511 are assembled with the distance-adjusting pin A531, the position of the distance-adjusting slide block can be changed in the radial direction of the distance-adjusting disk.

The switching assembly a900 comprises a switching side plate a910, the top and the bottom of the switching side plate a910 are respectively assembled with a switching frame top plate a911 and a switching frame bottom plate a913, a switching chute a912 is arranged inside the switching side plate a910, the switching chute a912 is engaged with a switching slider a933 and slidably assembled, the switching slider a933 is installed on a movable side plate a932 of the movable frame a930, a movable top plate a931 and a movable bottom plate a937 are further installed on the movable frame a930, the movable top plate a931 and the movable bottom plate a937 are respectively installed on two ends of the movable side plate a932, two first movable vertical plates a935 and two second movable vertical plates a936 are respectively installed on the movable top plate a931 and the movable bottom plate a937, the two first movable vertical plates a935 are parallel to each other, the two first movable vertical plates a935 are respectively assembled with a331 in a circumferential rotation manner, and a first vibration gear a810 is sleeved on a portion of the distance-adjusting motor shaft a between the two first movable vertical plates a935, one end of the distance-adjusting motor shaft A331 penetrates through one of the first movable vertical plates A935 and then is arranged in the distance-adjusting motor A330, the distance-adjusting motor A330 is arranged on a distance-adjusting motor plate A934, the distance-adjusting motor plate A934 is arranged on the first movable vertical plate A935 close to the distance-adjusting motor plate A934, the pitch-adjusting motor A330 can drive the pitch-adjusting motor shaft A331 to rotate circularly after being started, the first vibrating gear A810 is in mesh transmission with a second vibrating gear A821, the second vibrating gear A821 can be sleeved on the first intermediate shaft A710 in a circumferential rotation mode, the second vibration gear A821 can be meshed with the third vibration gear A831 for transmission, the first intermediate shaft A710 is assembled with one first movable vertical plate A935, the other first movable vertical plate A935 is assembled and fixed with the second intermediate shaft A720, the second intermediate shaft A720 is sleeved and fixed with a second vibration pinion A822, the second oscillating pinion a822 may mesh with the third oscillating pinion a832 such that the third oscillating pinion a832 may not rotate. The third vibration pinion a832 is fixed on the vibration power shaft a240 in a sleeved mode, the third vibration pinion a831 and the third vibration pinion a832 are in meshing transmission with the fourth vibration pinion a840 at the same time in an initial state, the fourth vibration pinion a840 is sleeved on the third intermediate shaft a730 in a circumferential rotation mode, two ends of the third intermediate shaft a730 are respectively assembled with the second movable vertical plate a936, the outer diameters, the reference circle radii, the clamping tooth shapes and the intervals of the third vibration pinion a831 and the third vibration pinion a832 are the same, and in the embodiment, the third vibration pinion a831 and the third vibration pinion a832 are gears with the same size. Due to the design, when the third vibration gear A831 and the third vibration pinion A832 are simultaneously meshed with the fourth vibration gear A840 for transmission, the distance adjusting disc A520 and the fixed disc A510 synchronously rotate, so that the radial position of the distance adjusting slide block A530 relative to the distance adjusting disc A520 is unchanged.

The movable top plate A931 is assembled with one end of the switching telescopic shaft A311, the other end of the switching telescopic shaft A311 penetrates through the switching frame top plate A911 and then is installed in the switching electromagnet A310, and after the switching electromagnet A310 is started, the switching telescopic shaft A311 can be driven to extend towards the movable top plate A931, so that the whole movable frame A930 is driven to move downwards. The bottom of the movable bottom plate A937 is fixedly assembled with one end of a movable guide shaft A960, the other end of the movable guide shaft A960 is installed in a movable guide cylinder A950 and is assembled with the movable guide cylinder A950 in an axial sliding mode, the movable guide cylinder A950 is installed on a switching frame bottom plate A913, a movable frame spring A420 is sleeved outside the movable guide shaft A960 and the movable guide cylinder A950, and the movable frame spring A420 is used for applying elastic force to the movable frame A930 to push the fourth vibration gear A840, so that the fourth vibration gear is kept to be simultaneously in meshing transmission with the third vibration gear A831 and the third vibration pinion A832.

When the thrust distance (vibration amplitude) applied to the first vibration plate a110 by the vibration roller needs to be adjusted, the electromagnet is switched to be electrified, so that the movable frame is driven to move downwards by overcoming the elastic force of a spring a420 of the movable frame until the second vibration gear a821 and the second vibration pinion a822 are respectively meshed with the third vibration gear a831 and the third vibration pinion a832, at the moment, the third vibration pinion a832 and the vibration power shaft a240 cannot rotate, and the third vibration gear a831, the third vibration pinion a832 and the fourth vibration gear 840 a are not meshed; the distance adjusting motor A330 is started, the distance adjusting motor A330 drives the second vibration gear A821 and the third vibration gear A831 to rotate circumferentially, so as to drive the fixed disc A510 to rotate circumferentially, the fixed disc A510 drives the distance adjusting pin A531 and the distance adjusting slide block A530 to slide along the distance adjusting slide groove A521 through the distance adjusting arc groove A511, and therefore the position of the vibration roller in the radial direction of the distance adjusting disc A520 is adjusted. After the distance adjustment is finished, the distance adjustment electromagnet is powered off, and the movable frame spring drives the movable frame to move upwards for resetting through elasticity. The switching frame base plate a913 of the first vibration module is mounted on the third vibration frame 180, the switching frame base plate a913 of the second vibration module is mounted on the second vibration frame 160, and the switching frame base plate a913 of the first vibration module is mounted on the upper frame 150.

After the first vibration plate a110 overcomes the elastic force of the first vibration spring a411 to pull the second vibration plate a120 away from the third vibration plate a130, the first vibration spring a411 stores the elastic force, and after the vibration drum is separated from the first vibration plate a110, the first vibration plate a110 and the second vibration plate a120 are quickly reset through the elastic force of the first vibration spring a411, and meanwhile, the second vibration spring a412 absorbs the impact force of the second vibration plate a120 moving towards the third vibration plate a130, so that the damage caused by the direct impact of the second vibration plate a120 and the third vibration plate a130 is avoided, meanwhile, the irregularity of vibration is increased, and the vibration of the workpiece is better simulated. When the vibration simulation device is used, the vibration of the workpiece during workpiece cutting can be relatively truly simulated by applying different amplitudes and frequencies through the first vibration module, the second vibration module and the third vibration module, so that a foundation is provided for fine research.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The device for measuring the additional load loss coefficient of the milling machine without cutting is characterized by comprising a fluid barrel, a switch box and a coil barrel, wherein a hollow coil cavity is arranged in the coil barrel, the upper end and the lower end of the coil cavity are respectively sealed by a magnetic suction disc and a magnetic separation disc, and the magnetic separation disc and the coil barrel are made of magnetic separation materials; an electromagnetic coil and an electromagnetic shaft are arranged in the coil cavity, and two ends of the electromagnetic shaft are respectively assembled with the magnetic suction disc and the magnetic separation disc; the electromagnetic coil generates a magnetic field after being electrified, the magnetic field acts on the magnetic fluid to change the viscosity of the magnetic fluid, and the cutting material is simulated through the viscosity of the magnetic fluid;

the magnetic partition disc and the coil barrel are respectively assembled with the bottom of the fluid barrel and the top of the switch box, a first connecting flange is sleeved outside the switch box, the first connecting flange is fixedly assembled with a second connecting flange through a second bolt, the second connecting flange is installed on a supporting table, the supporting table is assembled with a first vibration module, and the first vibration module is used for applying vibration force to the fluid barrel to vibrate up and down along the axial direction of the fluid barrel; the first vibration module is also arranged on a third vibration frame, two third vibration frame plates and two third vibration frame sliding plates which are arranged in parallel are respectively arranged on the upper side and the lower side of the third vibration frame, the third vibration frame sliding plates can be axially and slidably sleeved on a vibration sliding shaft, two ends of the vibration sliding shaft are respectively assembled with the two second vibration frame mounting plates, and the third vibration frame can axially and reciprocally slide along the vibration sliding shaft;

2. The apparatus of claim 1, wherein the first, second, and third vibration modules are all of the same structure and are vibration modules; the second vibration module and the third vibration module apply vibration to two mutually perpendicular diameter directions of the fluid barrel, so that three-axis vibration of the fluid barrel is realized through the first vibration module, the second vibration module and the third vibration module;

3. The device as claimed in claim 1, wherein the two upper frame vertical plates are both mounted on the upper frame, the upper frame is mounted on a frame body partition plate, the frame body partition plate is installed with the frame body bottom plate in a lifting manner through a lifting mechanism, the lifting mechanism comprises a lifting slide plate mounted on the frame body partition plate, the lifting slide plate is installed between a lifting lock plate and a lifting matching vertical plate, and the lifting lock plate presses the lifting slide plate to the lifting matching vertical plate;

4. The device of claim 3, wherein the lifting lock plate is fixedly assembled with one end of a lifting lock shaft, the other end of the lifting lock shaft is fixedly assembled with the unlocking inclined block after being sleeved with a second lifting pressure spring, a lifting partition plate and a lifting unlocking bar, the lifting partition plate is arranged on the bottom plate of the frame body, and two ends of the second lifting pressure spring are respectively tightly pressed with the lifting partition plate and the lifting lock plate;

5. The device as claimed in claim 4, wherein the two ends of the lifting unlocking bar are respectively assembled with a first locking bar end plate and a second locking bar end plate, the first locking bar end plate and the second locking bar end plate are respectively assembled and fixed with one end of a first locking plate guide shaft and one end of a second locking plate guide shaft, the other end of the first locking plate guide shaft passes through the lifting retaining plate and then is assembled and fixed with the lifting linkage plate through a lifting nut, and the lifting linkage plate can axially slide relative to the first locking plate guide shaft; the other end of the second lock plate guide shaft is sleeved with a first lifting spring and then penetrates through the lifting stress plate, the second lock plate guide shaft and the lifting stress plate can slide relatively, the lifting stress plate is installed on the lifting partition plate, the first lifting spring is used for applying elastic force for pushing the lifting unlocking bar to the lifting maintaining plate, so that the matching vertical face is attached to the stopping vertical face in the initial state, and the lifting lock plate is pressed against the lifting sliding plate; the lifting holding plate is mounted on the lifting partition plate.

6. The device as claimed in claim 5, wherein a lifting side guard plate is further installed between the lifting partition plate and the lifting matching vertical plate, the lifting side guard plate is installed on the frame body bottom plate, the lifting linkage plate is further assembled and fixed with one end of an unlocking telescopic shaft, the other end of the unlocking telescopic shaft penetrates through the lifting holding plate and then is installed in an unlocking electromagnet, and the lifting electromagnet is installed on the lifting frame;

7. The device of claim 1, further comprising a displacement detection assembly, wherein the displacement detection assembly comprises a first detection rod and a second detection rod, two ends of the first detection rod are respectively assembled and fixed with one end of the second detection rod and the supporting platform, the other end of the second detection rod is assembled and fixed with a first detection seat, a first detection slide rail and a first detection vertical plate are mounted on the first detection seat, the first detection vertical plate is assembled with an input shaft of the first displacement sensor, the first detection slide rail is assembled with the first detection guide rail in a clamping manner, can slide and cannot move in the length direction of the second detection rod, the first detection guide rail is mounted on the second detection seat, and the first displacement sensor is mounted on the second detection seat; the second detection seat is also provided with a second detection vertical plate and a second detection slide rail, the second detection vertical plate is assembled with an input shaft of a second displacement sensor, the second displacement sensor is installed on a third detection seat, the third detection seat is also provided with a third detection guide rail, the third detection guide rail is clamped with the second detection slide rail, can slide and cannot move in the length direction of a second detection rod for assembly, the third detection seat is axially and slidably sleeved on a detection guide shaft, the detection guide shaft is installed on the upper frame, and the second detection rod penetrates through the through groove of the vibration plate and is not in contact with the detection guide shaft;

8. The device of claim 1, further comprising a cooling system, wherein the cooling system comprises a coil barrel, transformer oil, a circulating pump and a heat exchanger, a hollow coil cavity is arranged inside the coil barrel, and the coil cavity is filled with the transformer oil;

9. The device according to claim 2, wherein the vibration module comprises a switching component, a first vibration plate, a second vibration plate, a third vibration plate, a first vibration shaft, and a second vibration shaft, the second vibration plate is mounted between the first vibration plate and the third vibration plate, the second vibration plate is fixedly assembled with one end of the vibration plate shaft, the other end of the vibration plate shaft passes through the third vibration plate and is axially slidably assembled with the third vibration plate, the portions of the vibration plate shaft located at two sides of the third vibration plate are respectively sleeved with a first vibration spring and a second vibration spring, the third vibration plate is fixedly assembled with one end of the vibration side plate, the second vibration plate can axially move along the vibration plate shaft relative to the third vibration plate, and the first vibration spring and the second vibration spring are respectively used for providing elastic resistance to the axial movement of the vibration plate shaft;