CN111157377B - Roller roughness retention testing machine - Google Patents
Roller roughness retention testing machine Download PDFInfo
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- CN111157377B CN111157377B CN201911410973.1A CN201911410973A CN111157377B CN 111157377 B CN111157377 B CN 111157377B CN 201911410973 A CN201911410973 A CN 201911410973A CN 111157377 B CN111157377 B CN 111157377B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a roller roughness maintenance testing machine, which relates to the technical field of material testing and comprises a base, a roller sample rotating device, a testing force loading and unloading device for applying testing force to different axial positions of a sample and a testing force torque rotating speed measuring and controlling system. The testing machine can obtain the change conditions of different friction distances on the surface roughness and the surface morphology of the sample at different axial positions of one sample, and is convenient for quantitatively analyzing the roughness drop trend.
Description
Technical Field
The invention relates to the technical field of material tests, in particular to a roller roughness retention testing machine.
Background
During the rolling process, the cold rolling working roll makes the rolled material generate plastic deformation, and marks the surface morphology of the cold rolling working roll onto the surface of the rolled material. As the rolling distance increases, the roughness of the roller surface gradually decreases, on one hand, the friction coefficient is reduced, and accidents such as slipping, steel clamping and the like occur, so that the roller is damaged abnormally in accident; on the other hand, the variation of the surface roughness of the rolled material causes the increase of defective rate. One trend in the development of cold rolls is therefore to require that their roughness be maintained for a longer period of time and at a higher level over long rolling distances, and methods and apparatus for evaluating the roughness maintenance are also becoming increasingly important.
Disclosure of Invention
The invention aims to provide a roller roughness maintenance testing machine for testing the roughness maintenance capability of different roller materials.
In order to solve the technical problems, the invention adopts the following technical scheme:
a roller roughness maintenance testing machine comprises a base, a roller sample rotating device, a testing force loading and unloading device for applying testing force to different axial positions of a sample, and a testing force torque rotating speed measuring and controlling system.
The technical scheme of the invention is further improved as follows: the roller rotating device comprises a servo motor, a coupler, a combined bearing seat and a combined tailstock, wherein an output shaft of the servo motor is connected with a rotating shaft of the combined bearing seat through the coupler, and a sample is hinged between the rotating shaft of the combined bearing seat and the combined tailstock.
The technical scheme of the invention is further improved as follows: the sample is in a long round bar shape, and the shaft ends of the combined bearing seat and the combined tailstock are provided with conical holes in a matched mode.
The technical scheme of the invention is further improved as follows: the base is provided with a combined tailstock installing rail, the rear end of the combined tailstock is provided with a hand wheel, and the hand wheel rotates to drive the combined tailstock to move forwards and backwards along the axial direction of the combined tailstock.
The technical scheme of the invention is further improved as follows: the test force loading and unloading device comprises a bidirectional slide seat, a test force multiplying device and a test sample clamping device; the bidirectional slide seat can slide along the axial direction and the radial direction of the sample; the test force multiplication device comprises a loading bearing seat arranged on the bidirectional sliding seat, a rope wheel is arranged at one end of a hinged shaft in the loading bearing seat, a weight is hung on the rope wheel, a loading gear and a loading rack matched with the loading gear are connected at the other end of the hinged shaft, a accompany sample is connected to the loading rack through a accompany sample clamping device, the end part of the accompany sample is contacted with the sample, the axis of the accompany sample is radially coincident with the sample, and the increase multiple of the test force is determined by the nominal diameter ratio of the rope wheel and the loading gear.
The technical scheme of the invention is further improved as follows: the device comprises a sample holding device, a sample guiding device, a sample holding device, a sample guiding device and a sample guiding device.
The technical scheme of the invention is further improved as follows: still include coolant spray set, coolant spray set includes reservoir, spray pump, shower, return water filter tray, splashproof water cover and coupling hose, the reservoir sets up in the base, coupling hose passes through the spray pump and is connected with the shower, and the shower export is relative with the sample, the return water filters the tray setting in the sample below, and the return water filter tray return water mouth is connected with the reservoir, set up magnet and filter paper in the return water filter tray.
The technical scheme of the invention is further improved as follows: the test force torque rotation speed measurement and control system is composed of a torque sensor, a data measurement and control box, a servo motor driver and multichannel data measurement and control software, wherein the torque sensor is arranged between the servo motor and the combined bearing seat, an output shaft of the servo motor is connected with the torque sensor through a coupler, the torque sensor is connected with a rotating shaft of the combined bearing seat through the coupler, the multichannel data measurement and control software realizes parameter setting of sample rotation speed, test number of turns, acquisition channels and acquisition frequency and control start and stop of a test, the data measurement and control box controls the servo motor to rotate according to the set rotation speed and number of turns through controlling the servo motor driver, and torque, rotation speed and number of turns in the torque sensor are acquired by the data measurement and control box and then transmitted to the multichannel data measurement and control software.
The technical scheme of the invention is further improved as follows: the coupling adopts a key connection mode, the coupling between the servo motor and the torque sensor adopts an elastic coupling, and the coupling between the torque sensor and the combined bearing seat adopts a hard coupling.
By adopting the technical scheme, the invention has the following technical progress:
the testing machine can obtain the change conditions of different friction distances on the surface roughness and the surface morphology of the sample at different axial positions of one sample, and is convenient for quantitatively analyzing the roughness drop trend. The sample adopts a long round bar shape, is easy to process, and realizes uniform abrasion of the sample in the circumferential direction. The test force multiplication device adopts a rope wheel and weight loading mode, so that the test force cannot be changed due to abrasion of accompanying samples in the test process.
Drawings
FIG. 1 is a schematic top view of a connection structure of the present invention;
FIG. 2 is a schematic side view of the connection structure of the present invention;
FIG. 3 is a flow chart of the test force torque speed measurement and control system;
wherein, 1, a base, 2, a servo motor, 3, a coupler, 4, a torque sensor, 5, a combined bearing seat, 6, a sample, 7, a combined tailstock, 8, a accompanying sample, 9, an accompanying sample guiding device, 10 and an accompanying sample clamping device, 11, loading racks, 12, two-way sliding seats, 13, loading gears, 14, loading bearing seats, 15, rope pulleys, 16, weights, 17, spray pipes, 18, backwater filtering trays, 19, spray pumps, 20 and liquid storage tanks.
Detailed Description
As shown in FIG. 1, the roller roughness maintenance testing machine comprises a base 1, a roller sample rotating device, a testing force loading and unloading device for applying testing force to different axial positions of a sample 6 and a testing force torque rotating speed measuring and controlling system.
The roller rotating device comprises a servo motor 2, a coupler 3, a combined bearing seat 5 and a combined tailstock 7, wherein an output shaft of the servo motor 2 is connected with a rotating shaft of the combined bearing seat 5 through the coupler 3, and a sample 6 is hinged between the rotating shaft of the combined bearing seat 5 and the combined tailstock 7. Wherein the sample 6 is in a long round bar shape, and the shaft ends of the combined bearing seat 5 and the combined tailstock 7 are provided with conical holes in a matching way.
In order to enable the combined tailstock 7 to move back and forth along the axis of the sample 6 to realize positioning, tightness and loading and unloading of the sample 6, a track for installing the combined tailstock 7 is arranged on the base 1, a hand wheel is arranged at the rear end of the combined tailstock 7, and the hand wheel rotates to drive the combined tailstock 7 to move back and forth along the axial direction of the combined tailstock 7. Specifically, a rack can be arranged on the track, a gear is arranged on the hand wheel, and the cooperation of the gear and the rack realizes the reciprocating linear motion, and any other transmission mode in the prior art can be selected as long as the linear reciprocating motion can be realized.
The test force loading and unloading device comprises a bidirectional slide seat 12, a test force multiplying device and a test sample clamping device 10; the bidirectional slide seat 12 can slide along the axial direction and the radial direction of the sample 6, and the specific mechanical form of bidirectional sliding can be any one of the prior art, for example, two mutually perpendicular screw rod moving devices are arranged at the lower end of the bidirectional slide seat to realize movement in two directions; the test force multiplication device comprises a loading bearing seat 14 arranged on a bidirectional sliding seat 12, a rope pulley 15 is arranged at one end of a hinge shaft in the loading bearing seat 14, a weight 16 is hung on the rope pulley 15, a loading gear 13 and a loading rack 11 matched with the loading gear 13 are connected at the other end of the hinge shaft, a test sample is connected with the loading rack 11 through a test sample clamping device, the end of the test sample is contacted with a sample 6, the axis of the test sample is radially coincident with the sample 6, and the increase multiple of the test force is determined by the nominal diameter ratio of the rope pulley 15 and the loading gear 13. The device also comprises a accompanying sample guiding device 9, wherein a round hole matched with the outer circumference of the accompanying sample 8 is arranged in the center of the accompanying sample guiding device, and the accompanying sample guiding device is arranged between the accompanying sample clamping device 10 and the sample 6; the sample holding device 10 may be a chuck-like device on a machine tool or a sleeve-coupled locking device such as a lock nut, and the structure of the holding device 10 is not particularly limited in this embodiment, and any holding device in the prior art may be used.
The cooling medium spraying device comprises a liquid storage tank 20, a spray pump 19, a spray pipe 17, a backwater filtering tray 18, a splash cover and a connecting hose, wherein the liquid storage tank 20 is arranged in the base 1, the connecting hose is connected with the spray pipe 17 through the spray pump 19, an outlet of the spray pipe 17 is opposite to the sample 6, the backwater filtering tray 18 is arranged below the sample 6, a backwater outlet of the backwater filtering tray 18 is connected with the liquid storage tank 20, and a magnet and filter paper are arranged in the backwater filtering tray 18.
Preferably, a splash-proof cover can be arranged on the bidirectional slide seat to prevent splashing of the bidirectional slide seat.
The test force torque rotation speed measurement and control system consists of a torque sensor 4, a data measurement and control box, a servo motor driver, a computer and multichannel data measurement and control software, wherein the torque sensor 4 is arranged between the servo motor 2 and a combined bearing seat 5, an output shaft of the servo motor 2 is connected with the torque sensor 4 through a coupler 3, the torque sensor 4 is connected with a rotating shaft of the combined bearing seat 5 through the coupler 3, the multichannel data measurement and control software realizes parameter setting of sample rotation speed, test number of turns, acquisition channel and acquisition frequency and control start and stop of a test, the data measurement and control box controls the servo motor to rotate according to the set rotation speed and number of turns by controlling the servo motor driver, and meanwhile, the data measurement and control box transmits torque, rotation speed and number of turns in the torque sensor to the multichannel data measurement and control software after acquisition, and control box is also used for controlling start and stop of a spray pump.
Preferably, the coupling 3 adopts a key connection mode, the coupling 3 between the servo motor 2 and the torque sensor 4 adopts an elastic coupling, and the coupling 3 between the torque sensor 4 and the combined bearing seat 5 adopts a hard coupling.
Specific choices of devices and parameters may be referred to by way of example as follows:
the servo motor is manufactured by Nanjing Esston corporation, and the model is: EMG-15DPB22, speed range: 0-2000 rpm, rated torque of 7.16Nm. The torque sensor, the data measurement and control box and the measurement and control software are manufactured by Beijing Haibhua company, the parameters of the rotating speed, the cooling medium type, the test force, the acquisition period and the sample number are set according to the test requirements before the test, the device is started after the setting is finished, the device operates according to the set parameters, the parameters of the rotating speed, the rotating speed and the accumulated rotating number are displayed on a display in real time, the data is recorded in the background, the device automatically stops after the set rotating speed is reached, after the data is stored, the historical data query can be carried out according to the sample number, and the data comparison is carried out.
The axial expansion stroke of the tail seat 7 is 200mm, the test sample 6 is phi 30mm, and the length is 50-250 mm. The detectable range is 200mm. The cross section size of the accompanying sample 8 is 10mm by 10mm, and the length range is 40 mm to 200mm.
The test force loading and unloading assembly includes the following:
the two-way slide 12 (axial movement range 200mm, radial movement range 160 mm).
The diameter of the rope pulley 15 is 400 to mm, the diameter of the loading tooth 13 is 40 to mm, and the torque transmission ratio is 10: 1.
The liquid storage tank 20 is made of stainless steel by welding, and is internally provided with a solid-liquid separation device for purifying the cooling liquid. The backwater filtering tray 18 is welded by stainless steel, and the backwater opening is provided with a powerful magnet for adsorbing scrap iron in the cooling liquid.
Claims (6)
1. The utility model provides a roll roughness keeps nature test machine which characterized in that: the device comprises a base (1), a roller sample rotating device, a test force loading and unloading device for applying test force to different axial positions of a sample (6) and a test force torque rotating speed measurement and control system; the roller sample rotating device comprises a servo motor (2), a coupler (3), a combined bearing seat (5) and a combined tailstock (7), wherein an output shaft of the servo motor (2) is connected with a rotating shaft of the combined bearing seat (5) through the coupler (3), and a sample (6) is hinged between the rotating shaft of the combined bearing seat (5) and the combined tailstock (7); the test force loading and unloading device comprises a bidirectional slide seat (12), a test force multiplying device and a test sample clamping device (10); the bidirectional slide seat (12) can slide along the axial direction and the radial direction of the sample (6); the test force multiplication device comprises a loading bearing seat (14) arranged on a bidirectional sliding seat (12), a rope wheel (15) is arranged at one end of a hinge shaft in the loading bearing seat (14), a weight (16) is hung on the rope wheel (15), a loading gear (13) and a loading rack (11) matched with the loading gear (13) are connected at the other end of the hinge shaft, a accompany sample (8) is connected with the loading rack (11) through a accompany sample clamping device (10), the end part of the accompany sample (8) is in contact with a sample (6), the axis of the accompany sample is radially overlapped with the sample (6), and the increment of the test force is determined by the nominal diameter ratio of the rope wheel (15) and the loading gear (13); the test force torque rotation speed measurement and control system is composed of a torque sensor (4), a data measurement and control box, a servo motor driver and multichannel data measurement and control software, wherein the torque sensor (4) is arranged between the servo motor (2) and a combined bearing seat (5), an output shaft of the servo motor (2) is connected with the torque sensor (4) through a coupler (3), the torque sensor (4) is connected with a rotating shaft of the combined bearing seat (5) through the coupler (3), the multichannel data measurement and control software realizes parameter setting of sample rotation speed, test number of turns, acquisition channels and acquisition frequency and control start and stop, the data measurement and control box controls the servo motor to rotate according to the set rotation speed and number of turns through controlling the servo motor driver, and meanwhile, the data measurement and control box transmits torque, rotation speed and number of turns in the torque sensor to the multichannel data measurement and control software after acquisition.
2. The roll roughness maintenance testing machine of claim 1, wherein: the sample (6) is in a long round bar shape, and the shaft ends of the combined bearing seat (5) and the combined tailstock (7) are provided with conical holes in a matching way.
3. The roll roughness maintenance testing machine of claim 1, wherein: the combined tail seat is characterized in that a track for installing the combined tail seat (7) is arranged on the base (1), a hand wheel is arranged at the rear end of the combined tail seat (7), and the hand wheel rotates to drive the combined tail seat (7) to move forwards and backwards along the axial direction of the combined tail seat (7).
4. The roll roughness maintenance testing machine of claim 1, wherein: the device is characterized by further comprising a accompanying sample guiding device (9), a round hole matched with the outer circumference of the accompanying sample (8) is formed in the center of the accompanying sample guiding device (9), and the accompanying sample guiding device (9) is arranged between the accompanying sample clamping device (10) and the sample (6).
5. The roll roughness maintenance testing machine of claim 1, wherein: still include coolant spray set, coolant spray set includes reservoir (20), spray pump (19), shower (17), return water filter tray (18), splash guard and coupling hose, reservoir (20) set up in base (1), coupling hose passes through spray pump (19) and is connected with shower (17), and shower (17) export is relative with sample (6), return water filter tray (18) set up in sample (6) below, and return water filter tray (18) return water mouth is connected with reservoir (20), set up magnet and filter paper in return water filter tray (18).
6. The roll roughness maintenance testing machine of claim 1, wherein: the coupling (3) adopts a key connection mode, the coupling (3) between the servo motor (2) and the torque sensor (4) adopts an elastic coupling, and the coupling (3) between the torque sensor (4) and the combined bearing seat (5) adopts a hard coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410973.1A CN111157377B (en) | 2019-12-31 | 2019-12-31 | Roller roughness retention testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410973.1A CN111157377B (en) | 2019-12-31 | 2019-12-31 | Roller roughness retention testing machine |
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| Publication Number | Publication Date |
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| CN111157377A CN111157377A (en) | 2020-05-15 |
| CN111157377B true CN111157377B (en) | 2023-10-20 |
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| CN201911410973.1A Active CN111157377B (en) | 2019-12-31 | 2019-12-31 | Roller roughness retention testing machine |
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