CN111157377A - Roller roughness retentivity testing machine - Google Patents
Roller roughness retentivity testing machine Download PDFInfo
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- CN111157377A CN111157377A CN201911410973.1A CN201911410973A CN111157377A CN 111157377 A CN111157377 A CN 111157377A CN 201911410973 A CN201911410973 A CN 201911410973A CN 111157377 A CN111157377 A CN 111157377A
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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
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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
- G01N3/56—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
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- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- 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 retentivity testing machine, which relates to the technical field of material tests and comprises a base, a roller sample rotating device, a test force loading and unloading device and a test force torque and rotating speed measuring and controlling system, wherein the test force loading and unloading device is used for applying test forces to different axial positions of a sample. By adopting the testing machine provided by the invention, the change conditions of different friction distances to the surface roughness and the surface appearance of the sample can be obtained at different axial positions of one sample, and the roughness falling trend can be conveniently and quantitatively analyzed.
Description
Technical Field
The invention relates to the technical field of material tests, in particular to a roller roughness retentivity testing machine.
Background
In the rolling process of the cold rolling working roll, on one hand, the rolled material is subjected to plastic deformation, and on the other hand, the surface appearance of the cold rolling working roll is marked on the surface of the rolled material. Along with the increase of the rolling distance, the roughness of the surface of the roller is gradually reduced, so that on one hand, the friction coefficient is reduced, and accidents such as steel slipping and clamping occur, so that the roller is damaged accidently and abnormally; on the other hand, variations in the surface roughness of the rolled material cause an increase in the defective rate. Therefore, a trend in the development of cold rolls is to require that the roughness be maintained for a long time and at a high level over a long rolling distance, and methods and apparatuses for evaluating the roughness-maintaining ability are also being increasingly appreciated.
Disclosure of Invention
The invention provides a roller roughness retentivity testing machine for testing the roughness retentivity of different roller materials.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a roller roughness retentivity testing machine comprises a base, a roller sample rotating device, a test force loading and unloading device and a test force torque and rotating speed measuring and controlling system, wherein the test force loading and unloading device is used for applying test force to different axial positions of a sample.
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 test 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 test sample is in a long round bar shape, and tapered holes are formed in the shaft ends of the combined bearing block and the combined tailstock in a matched mode.
The technical scheme of the invention is further improved as follows: the base is provided with a track for installing the combined tailstock, 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 back and forth 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 sliding seat, a test force multiplying device and a sample accompanying clamping device; the bidirectional sliding seat can slide along the axial direction and the radial direction of the sample; the test force multiplication device comprises a loading bearing seat installed on a bidirectional sliding seat, a rope wheel is installed at one end of an articulated shaft in the loading bearing seat, weights are hung on the rope wheel, the other end of the articulated shaft is connected with a loading gear and a loading rack matched with the loading gear, the loading rack is connected with a accompanied sample through a accompanied sample clamping device, the end part of the accompanied sample is in contact with the sample and the axis of the accompanied sample is radially coincided 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: still including accompanying the sample guider, accompany the sample guider center be provided with accompany the sample outer circumference complex round hole, accompany the sample guider setting between accompany sample clamping device and sample.
The technical scheme of the invention is further improved as follows: still include cooling medium spray set, cooling medium 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, return water filter tray sets up in the sample below, and 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 rotating speed measuring and controlling system is composed of a torque sensor, a data measuring and controlling box, a servo motor driver and multichannel data measuring and controlling software, wherein the torque sensor is arranged between a servo motor and a combined bearing seat, a servo motor output shaft is connected with the torque sensor through a coupler, the torque sensor is connected with a combined bearing seat rotating shaft through the coupler, the multichannel data measuring and controlling software achieves sample rotating speed, test turn number, a collecting channel, parameter setting of collecting frequency and control of starting and stopping of a test, the data measuring and controlling box controls the servo motor to rotate according to the set rotating speed and turn number through controlling the servo motor driver, and meanwhile, the data measuring and controlling box transmits torque, rotating speed and turn number in the torque sensor to the multichannel data measuring and controlling software after collecting.
The technical scheme of the invention is further improved as follows: the coupler adopts the mode of key connection, and the coupler between servo motor and the torque sensor adopts elastic coupling, and the coupler between torque sensor and the combination bearing frame adopts hard coupling.
Due to the adoption of the technical scheme, the invention has the technical progress that:
by adopting the testing machine provided by the invention, the change conditions of different friction distances to the surface roughness and the surface appearance of the sample can be obtained at different axial positions of one sample, and the roughness falling trend can be conveniently and quantitatively analyzed. The long round bar-shaped sample is easy to process, and uniform abrasion of the sample in the circumferential direction is realized. The test force multiplication device adopts a rope wheel and weight loading mode, so that the test force can not change due to abrasion accompanying the test sample in the test process.
Drawings
FIG. 1 is a schematic top view of the connection structure of the present invention;
FIG. 2 is a schematic side view of the connection of the present invention;
FIG. 3 is a flow chart of the operation of the test force, torque, and rotational speed measurement and control system;
the device comprises a base 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, an accompanied sample 9, an accompanied sample guiding device 10, an accompanied sample clamping device 11, a loading rack 12, a bidirectional sliding seat 13, a loading gear 14, a loading bearing seat 15, a rope pulley 16, a weight 17, a spray pipe 18, a backwater filtering tray 19, a spray pump 20 and a liquid storage tank.
Detailed Description
As shown in figure 1, the roller roughness retentivity testing machine comprises a base 1, a roller sample rotating device, a test force loading and unloading device and a test force torque and rotating speed measuring and controlling system, wherein the test force loading and unloading device is used for applying test force to different axial positions of a sample 6.
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 the combined bearing seat 5 through the coupler 3 in a rotating mode, and a test sample 6 is hinged between the combined bearing seat 5 and the combined tailstock 7. Wherein the sample 6 is in a long round bar shape, and tapered holes are arranged at the shaft ends of the combined bearing seat 5 and the combined tailstock 7 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 the positioning, tightness, assembly and disassembly 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. The specific rack that can set up on the track, the gear of installation on the hand wheel, reciprocal linear motion has been realized to the cooperation of rack and pinion, also can choose for use any other transmission methods among the prior art, as long as can realize straight reciprocating motion can.
The test force loading and unloading device comprises a bidirectional slide carriage 12, a test force multiplying device and a sample accompanying clamping device 10; the bidirectional sliding base 12 can slide along the axial direction and the radial direction of the test sample 6, and the specific mechanical form of the bidirectional sliding can be any one of the prior arts, for example, two mutually perpendicular lead screw moving devices are mounted at the lower end of the bidirectional sliding base to realize the movement in two directions; the test force multiplication device comprises a loading bearing seat 14 installed on a bidirectional sliding seat 12, a rope wheel 15 is installed at one end of an articulated shaft in the loading bearing seat 14, weights 16 are hung on the rope wheel 15, the other end of the articulated shaft is connected with a loading gear 13 and a loading rack 11 matched with the loading gear 13, the loading rack 11 is connected with an accompanying sample through an accompanying sample clamping device, the end part of the accompanying sample is in contact with the sample 6, the axis of the accompanying sample is radially overlapped with the sample 6, and the increase multiple of the test force is determined by the nominal diameter ratio of the rope wheel 15 to the loading gear 13. The device can also comprise an accompanying sample guiding device 9, wherein the center of the accompanying sample guiding device is provided with a round hole matched with the outer circumference of an accompanying sample 8, and the accompanying sample guiding device is arranged between an accompanying sample clamping device 10 and the sample 6; the accompanied sample holding device 10 may be selected from a chuck-like device on a machine tool or a locking device such as a sleeve combined with a lock nut, and the structure of the holding device 10 is not particularly limited in this embodiment, and any one of the holding devices in the prior art may be selected.
The cooling medium spraying device comprises a liquid storage tank 20, a spraying pump 19, a spraying pipe 17, a backwater filtering tray 18, a splash guard and a connecting hose, wherein the liquid storage tank 20 is arranged in the base 1, the connecting hose is connected with the spraying pipe 17 through the spraying pump 19, an outlet of the spraying pipe 17 is opposite to the sample 6, the backwater filtering tray 18 is arranged below the sample 6, a backwater inlet of the backwater filtering tray 18 is connected with the liquid storage tank 20, and magnets and filter paper are arranged in the backwater filtering tray 18.
Preferably, a splash guard can be arranged on the bidirectional sliding seat to prevent the bidirectional sliding seat from splashing.
The test force torque rotating speed measuring and controlling system consists of a torque sensor 4, a data measuring and controlling box, a servo motor driver, a computer and multi-channel data measuring and controlling software, wherein the torque sensor 4 is arranged between a 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 multi-channel data measuring and controlling software realizes the parameter setting of the sample rotating speed, the number of test turns, a collecting channel and the collecting frequency and controls the starting and stopping of the test, the data measuring and controlling box controls the servo motor to rotate according to the set rotating speed and the number, meanwhile, the data measurement and control box collects the torque, the rotating speed and the number of turns in the torque sensor and then transmits the collected torque, the rotating speed and the number of turns to multi-channel data measurement and control software, and meanwhile, the data measurement and control box is also used for controlling the starting and stopping of the spraying pump.
Preferably, the coupler 3 is in a key connection mode, the coupler 3 between the servo motor 2 and the torque sensor 4 is an elastic coupler, and the coupler 3 between the torque sensor 4 and the combined bearing seat 5 is a hard coupler.
The specific choice of equipment and parameters can be referred to by the following examples:
the servo motor is manufactured by Nanjing Estan company, and has the model number as follows: EMG-15DPB22, speed range: 0-2000 rpm, and a rated torque of 7.16 Nm. The torque sensor, the data measurement and control box and the measurement and control software are made of products of Beijing Haibohua company, the parameters of the rotating speed, the type of a cooling medium, the test force, the acquisition period and the sample number are set according to the test requirements before the test, the device is started by pressing after the setting is finished, the device runs according to the set parameters, the parameters of the torque, the rotating speed and the accumulated rotating number are displayed on a display in real time, the data is recorded in a background, the device is automatically stopped after the set rotating speed is reached, and after the data is stored, historical data can be inquired according to the sample number to compare.
The axial telescopic stroke of the tail seat 7 is 200mm, and the sample 6 is phi 30mm and has the length of 50-250 mm. The detectable range is 200 mm. The cross-sectional dimension of the test sample 8 is 10 x 10mm, and the length range is 40-200 mm.
The test force loading and unloading assembly comprises the following components:
a bidirectional slide 12 (axial movement range 200mm, radial movement range 160 mm).
The diameter of the rope wheel 15 is 400 mm, the diameter of the loading tooth 13 is 40 mm, and the torque transmission ratio is 10: 1.
The liquid storage tank 20 is welded by stainless steel, and a solid-liquid separation device is arranged in the liquid storage tank to purify the cooling liquid. The backwater filtering tray 18 is welded by stainless steel, and a liquid return port is provided with a strong magnet for adsorbing scrap iron in the cooling liquid.
Claims (9)
1. A roller roughness retentivity testing machine is characterized in that: the device comprises a base (1), a roller sample rotating device, a test force loading and unloading device and a test force torque and rotating speed measuring and controlling system, wherein the test force loading and unloading device is used for applying test force to different axial positions of a sample (6).
2. The roll roughness retention tester as claimed in claim 1, wherein: 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 test sample (6) is hinged between the rotating shaft of the combined bearing seat (5) and the combined tailstock (7).
3. The roll roughness retention tester as claimed in claim 2, wherein: the test sample (6) is in a long round bar shape, and tapered holes are formed in the shaft ends of the combined bearing seat (5) and the combined tailstock (7) in a matched mode.
4. The roll roughness retention tester as claimed in claim 2, wherein: the combined tailstock structure is characterized in that 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).
5. The roll roughness retention tester as claimed in claim 2, wherein: the test force loading and unloading device comprises a bidirectional slide seat (12), a test force multiplying device and a sample accompanying clamping device (10); the bidirectional slide carriage (12) can slide along the axial direction and the radial direction of the test sample (6); experimental power multiplication device is including installing loading bearing frame (14) on two-way slide (12), rope sheave (15) are installed to articulated shaft one end in loading bearing frame (14), the last suspension of rope sheave (15) has weight (16), the articulated shaft other end is connected with loading gear (13) and with loading gear (13) complex loading rack (11), loading rack (11) are connected with through accompanying sample clamping device and accompany the sample, accompany sample tip and sample (6) contact and accompany the radial coincidence of sample axis and sample (6), the increase multiple of experimental power is confirmed by the nominal diameter ratio of rope sheave (15) and loading gear (13).
6. The roll roughness retention tester as claimed in claim 2, wherein: still including accompanying sample guider (9), accompany sample guider center be provided with accompany sample (8) outer circumference complex round hole, accompany sample guider setting between accompany sample clamping device (10) and sample (6).
7. The roll roughness retention tester as claimed in claim 2, wherein: still include cooling medium spray set, cooling medium spray set includes reservoir (20), spray pump (19), shower (17), return water filter tray (18), splashproof water cover 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).
8. The roll roughness retention tester as claimed in claim 2, wherein: the test force torque rotating speed measuring and controlling system consists of a torque sensor (4), a data measuring and controlling box, a servo motor driver and multi-channel data measuring and controlling software, wherein the torque sensor (4) is arranged between a 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 multi-channel data measuring and controlling software realizes the parameter setting of the sample rotating speed, the number of test turns, a collection channel and the collection frequency and controls the start and stop of a test, the data measuring and controlling box controls the servo motor to rotate according to the set rotating speed and number of turns by controlling the, meanwhile, the data measurement and control box collects the torque, the rotating speed and the number of turns in the torque sensor and then transmits the collected torque, the rotating speed and the number of turns to multi-channel data measurement and control software.
9. The roll roughness retention tester as claimed in claim 8, wherein: the coupler (3) adopts a key connection mode, the coupler (3) between the servo motor (2) and the torque sensor (4) adopts an elastic coupler, and the coupler (3) between the torque sensor (4) and the combined bearing seat (5) adopts a hard coupler.
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 |
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| 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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| CN111157377A true CN111157377A (en) | 2020-05-15 |
| CN111157377B CN111157377B (en) | 2023-10-20 |
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