CN201251536Y - Journal and bushing friction and wear property tester of machine tool spindle - Google Patents
Journal and bushing friction and wear property tester of machine tool spindle Download PDFInfo
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- CN201251536Y CN201251536Y CNU2008200413165U CN200820041316U CN201251536Y CN 201251536 Y CN201251536 Y CN 201251536Y CN U2008200413165 U CNU2008200413165 U CN U2008200413165U CN 200820041316 U CN200820041316 U CN 200820041316U CN 201251536 Y CN201251536 Y CN 201251536Y
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Abstract
The utility model relates to a journal and bushing friction and wear property tester of a machine tool spindle which belongs to the field of testers, in particular to a simulation detector of the friction and wear process of a journal and bushing pair of a machine tool spindle. The detector comprises a drive part, a test part, a loading part and a measuring system; a frequency converter of the drive part is connected with a speed regulating motor; the main shaft of the speed regulating motor is connected with a supporting shaft through a coupler; the supporting shaft is a stepped shaft; a strain beam of the test part is vertically arranged on the upper end of an upper test specimen clamp; an upper specimen is locked in a square groove on the lower end of the upper test specimen clamp by a screw; a circular lower test specimen is arranged below the upper test specimen; the upper end of the strain beam of the loading part is interference fit connected with a force application lever; and one end of the force application lever is provided with a counterweight, and the other end is provided with a poise rack. The utility model provides a tester which simulates actual working conditions, has simple structure, can effectively assess the auxiliary material and the lubrication media friction property of a sliding bearing of the tester, and can speed up the wear test.
Description
Technical field
The utility model relates to test unit, is specifically related to simulation, the pick-up unit of the secondary process of friction and wear of machine tool chief axis axle journal bearing shell, belongs to the tribology technical field.
Background technology
Sliding bearing is one of support-drive disk assembly of using always, and the tribological property of machine tool chief axis sliding bearing pair had a direct impact machine tool accuracy, life-span.The machine tool chief axis sliding bearing pair is after work surpasses 10000 hours, and serious tired spot corrosion and fine crack appear in journal surface, causes machine tool accuracy, wear extent and life-span far below external like product.The main cause that produces this phenomenon is the not coupling research of process system such as sliding bearing auxiliary material, Surface Engineering and lubricant parameter, thereby anti-wear and wear-resistant performance is relatively poor.
Present standard rubbing wear machine both domestic and external is usually used in the tribological property evaluation of different materials, or is used for the rapid evaluation of lubricant medium performance, but does not often have corresponding relation between the specimen test that carries out on the standard rubbing wear machine and actual service test.Based on the characteristics of sliding bearing pair, its rubbing wear not only is subjected to the influence of the attribute of material own, and also with the characteristic of lubricant medium, lubricating status is closely related.And according to tribology principle, when the wearing and tearing of sliding bearing mainly occurred in startup and parking, this moment, lubricating status belonged to boundary lubrication, and surface of friction pair micro-bulge directly contact causes wearing and tearing.In order to select suitable friction pair material, process for surface coating and lubricant medium coupling, the simulation actual condition is very necessary.
On April 18th, 2006; University On The Mountain Of Swallows had once submitted the patented claim of a " on-line measuring and testing machine for radial sliding bearing friction and wearing " by name to; China's application number is 200610012604.3; wherein disclose a kind of sliding bearing friction and wearing on-line measurement device, can realize that the urgency of friction pair scuffing failure and wear out failure moment is stopped protection.But its structure is comparatively complicated, and the friction coefficient measurement method exists not enough, especially when the friction pair friction factor hour, error is very big.
Summary of the invention
The utility model is at the problems referred to above, for studying different axle journal bearing shell auxiliary materials, especially the friction and wear characteristic of journal surface coating under different lubricating condition, a kind of simulation actual condition has been proposed, simple in structure, simultaneously the test unit of sliding bearing auxiliary material, lubricant medium tribological property can be effectively assessed, and accelerated wear test can be realized.The utility model adopts sample friction ring simulation axle journal down, friction ring surface preparation coating, coupon simulation bush material in the employing, reasonably optimizing test parameters; Measure the sample minor shifts amount that goes up by high accuracy displacement sensor, calculate friction factor, the secondary tribological property of realization axle journal bearing shell is accurately assessed.
The utility model adopts following technical scheme for achieving the above object:
The utility model comprises drive part, test portion, loading section, measuring system;
Drive part of the present utility model comprises frequency converter, buncher, shaft coupling, back shaft, bearing, base; Frequency converter is connected with buncher, and the main shaft of buncher links to each other with back shaft by shaft coupling, and back shaft is a multidiameter, is fixed on the bearing, and bearing is arranged on the base;
Test portion comprises strain beam, last specimen holder, goes up sample, plays sample, oil ring; Strain beam is vertically set on the specimen holder upper end; Sample is gone up in the square groove inner bolt locking of last specimen holder lower end, and the below of last sample is provided with annular sample down; Following sample and back shaft clearance fit, and use nut lock; The inboard of following sample is provided with oil ring, oil ring and back shaft interference fit;
Loading section comprises support, application of force lever, counterweight frame, balancing weight, the upper end interference fit of strain beam connects application of force lever, the application of force lever pine support that is threaded, and support is installed on the base, application of force lever one end is provided with balancing weight, and the application of force lever other end is provided with the counterweight frame;
Measuring system comprises eddy current displacement sensor, data processing circuit and computing machine; Eddy current displacement sensor is oppositely arranged on a side of specimen holder, directly over the electric turbine displacement transducer stop screw is set, and eddy current displacement sensor is connected with base by sensor stand; Probe is set in the sensor stand, and the measuring-signal of eddy current displacement sensor inserts data processing circuit, through AD conversion and single-chip microcomputer pre-service, and the input computing machine.
Reasonable is to connect by flexible strand between two parts of shaft coupling of the present utility model.
Reasonablely be, bearing of the present utility model comprises a pair of angular contact ball bearing, preload ring, end cap, and angular contact bearing is arranged in the middle part of bearing face-to-face, and the outside of angular contact bearing is provided with preload ring respectively, and the outside of preload ring is provided with end cap respectively.
The utility model adopts technique scheme, compared with prior art has following advantage:
1, the utility model is drawn the streibeck curve of the axle journal bearing shell pair under certain load by test, obtains the critical rotary speed of friction pair when boundary lubrication condition, confirmed test parameter, simulation actual condition; Adopt the skew of specimen holder under the friction force effect on the displacement sensor, calculate the secondary friction factor of axle journal bearing shell, overcome the friction coefficient and be difficult for the accurate shortcoming of measuring.
2, the utility model can be used for evaluating the secondary friction and wear behavior of axle journal bearing shell of different materials and treatment process; In lubricant medium, add adjuvant, can study effect and the lubrication mechanism of adjuvant in rubbing wear.
3, the utility model can realize quickening frictional wear experiment by the effective control load of leverage; Measuring system can and show the accurate on-line measurement of friction force, can be used for the research of the secondary friction of axle journal bearing shell rule.
4, be with oily chain on the oil ring of the present utility model, oily chain one end immerses lubricating cup, and oil ring drives oily chain rotation during test, for friction pair provides lubricated.
5, connect by flexible strand between two parts of shaft coupling of the present utility model, in order to the buffering absorbing.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of measure portion of the present utility model.
Wherein: 1, frequency converter, 2, buncher, 3, shaft coupling, 4, back shaft, 5, angular contact ball bearing, 6, bearing, 7, preload ring, 8, end cap, 9, support, 10, oil ring, 11, sample down, 12, go up sample, 13, go up specimen holder, 14, strain beam, 15, application of force lever, 16, eddy current displacement sensor, 17, sensor stand, 18, stop screw, 19, balancing weight, 20, the counterweight frame.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:
As shown in Figure 1 and Figure 2, the utility model comprises drive part, test portion, loading section, measuring system;
Drive part comprises frequency converter 1, buncher 2, shaft coupling 3, back shaft 4, bearing 6, base; Frequency converter 1 is connected with buncher 2, and the main shaft of buncher 2 links to each other with back shaft 4 by shaft coupling 3, and back shaft 4 is a multidiameter, is fixed on the bearing 6, and bearing 6 is arranged on the base;
Test portion comprises strain beam 14, last specimen holder 13, goes up sample 12, plays sample 11, oil ring 10; Strain beam 14 is vertically set on specimen holder 13 upper ends; Sample 12 is gone up in the square groove inner bolt locking of last specimen holder 13 lower ends, and the below of last sample 12 is provided with annular sample 11 down; Following sample 11 and back shaft 4 clearance fit, and use nut lock; The inboard of following sample 11 is provided with oil ring 10, oil ring 10 and back shaft 4 interference fit;
Loading section comprises support 9, application of force lever 15, counterweight frame 20, balancing weight 19, the upper end interference fit of strain beam 14 connects application of force lever 15, the application of force lever 15 pines support 9 that is threaded, support 9 is installed on the base, application of force lever 15 1 ends are provided with balancing weight 19, and application of force lever 15 other ends are provided with counterweight frame 20;
Measuring system comprises eddy current displacement sensor 16, data processing circuit and computing machine; Eddy current displacement sensor 16 is oppositely arranged on a side of specimen holder 13, and stop screw 18 is set directly over the electric turbine displacement transducer 16, and eddy current displacement sensor 16 is connected with base by sensor stand 17; In the sensor stand 17 probe is set, the measuring-signal of eddy current displacement sensor 16 inserts data processing circuit, through AD conversion and single-chip microcomputer pre-service, and the input computing machine.
Connect by flexible strand between two parts of shaft coupling 3 of the present utility model.
Bearing 6 of the present utility model comprises a pair of angular contact ball bearing 5, preload ring 7, end cap 8, and angular contact bearing 5 is arranged in the middle part of bearing 6 face-to-face, and the outside of angular contact bearing 5 is provided with preload ring 7 respectively, and the outside of preload ring 7 is provided with end cap 8 respectively.
Claims (3)
1, a kind of machine tool chief axis axle journal bearing shell friction and wear behavior test unit is characterized in that: comprise drive part, test portion, loading section, measuring system;
Drive part comprises frequency converter (1), buncher (2), shaft coupling (3), back shaft (4), bearing (6), base; Frequency converter (1) is connected with buncher (2), and the main shaft of buncher (2) links to each other with back shaft (4) by shaft coupling (3), and back shaft (4) is a multidiameter, is fixed on the bearing (6), and bearing (6) is arranged on the base;
Test portion comprises strain beam (14), last specimen holder (13), goes up sample (12), plays sample (11), oil ring (10); Strain beam (14) is vertically set on specimen holder (13) upper end; Sample (12) is gone up in the square groove inner bolt locking of last specimen holder (13) lower end, and the below of last sample (12) is provided with annular sample (11) down; Following sample (11) and back shaft (4) clearance fit, and use nut lock; The inboard of following sample (11) is provided with oil ring (10), oil ring (10) and back shaft (4) interference fit;
Loading section comprises support (9), application of force lever (15), counterweight frame (20), balancing weight (19), the upper end interference fit of strain beam (14) connects application of force lever (15), application of force lever (15) the pine support (9) that is threaded, support (9) is installed on the base, application of force lever (15) one ends are provided with balancing weight (19), and application of force lever (15) other end is provided with counterweight frame (20);
Measuring system comprises eddy current displacement sensor (16), data processing circuit and computing machine; Eddy current displacement sensor (16) is oppositely arranged on a side of specimen holder (13), and stop screw (18) is set directly over the electric turbine displacement transducer (16), and eddy current displacement sensor (16) is connected with base by sensor stand (17); Sensor stand is provided with probe in (17), and the measuring-signal of eddy current displacement sensor (16) inserts data processing circuit, through AD conversion and single-chip microcomputer pre-service, and the input computing machine.
2, machine tool chief axis axle journal bearing shell friction and wear behavior test unit according to claim 1 is characterized in that connecting by flexible strand between two parts of above-mentioned shaft coupling (3).
3, machine tool chief axis axle journal bearing shell friction and wear behavior test unit according to claim 1, it is characterized in that above-mentioned bearing (6) comprises a pair of angular contact ball bearing (5), preload ring (7), end cap (8), angular contact bearing (5) is arranged in the middle part of bearing (6) face-to-face, the outside of angular contact bearing (5) is provided with preload ring (7) respectively, and the outside of preload ring (7) is provided with end cap (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200413165U CN201251536Y (en) | 2008-08-19 | 2008-08-19 | Journal and bushing friction and wear property tester of machine tool spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200413165U CN201251536Y (en) | 2008-08-19 | 2008-08-19 | Journal and bushing friction and wear property tester of machine tool spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251536Y true CN201251536Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200413165U Expired - Fee Related CN201251536Y (en) | 2008-08-19 | 2008-08-19 | Journal and bushing friction and wear property tester of machine tool spindle |
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| CN (1) | CN201251536Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080704A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Suspension type damper used for high speed rotating machine |
| CN102735484A (en) * | 2012-06-26 | 2012-10-17 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN103279065A (en) * | 2013-06-21 | 2013-09-04 | 济钢集团有限公司 | Large-scale drive motor bearing bush detecting system |
| CN107132140A (en) * | 2017-05-18 | 2017-09-05 | 江苏电力装备有限公司 | A kind of material wear test real-time detection apparatus |
| CN107271250A (en) * | 2017-08-09 | 2017-10-20 | 济南大学 | Suppress the mould of fretting wear sample |
| CN109342244A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | Bearing shell friction and wear test testing machine and its test method |
| CN111649941A (en) * | 2020-06-12 | 2020-09-11 | 上海大学 | Multifunctional sliding bearing friction wear testing machine |
-
2008
- 2008-08-19 CN CNU2008200413165U patent/CN201251536Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080704A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Suspension type damper used for high speed rotating machine |
| CN102080704B (en) * | 2011-02-16 | 2012-05-23 | 东南大学 | Suspension type damper used for high speed rotating machine |
| CN102735484A (en) * | 2012-06-26 | 2012-10-17 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN102735484B (en) * | 2012-06-26 | 2014-09-10 | 吉林大学 | Dynamometer and hydraulic mixed loading table for testing reliability of power servo knife rest |
| CN103279065A (en) * | 2013-06-21 | 2013-09-04 | 济钢集团有限公司 | Large-scale drive motor bearing bush detecting system |
| CN103279065B (en) * | 2013-06-21 | 2015-11-04 | 济钢集团有限公司 | A kind of large-scale drive motor bearing shell detection system |
| CN107132140A (en) * | 2017-05-18 | 2017-09-05 | 江苏电力装备有限公司 | A kind of material wear test real-time detection apparatus |
| CN107271250A (en) * | 2017-08-09 | 2017-10-20 | 济南大学 | Suppress the mould of fretting wear sample |
| CN107271250B (en) * | 2017-08-09 | 2023-05-16 | 济南大学 | Mould for pressing friction and wear test sample |
| CN109342244A (en) * | 2018-11-19 | 2019-02-15 | 江苏科技大学 | Bearing shell friction and wear test testing machine and its test method |
| CN111649941A (en) * | 2020-06-12 | 2020-09-11 | 上海大学 | Multifunctional sliding bearing friction wear testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20120819 |