CN105619179A - Heavy duty horizontal lathe reliability test device utilizing finite element method for loading - Google Patents
Heavy duty horizontal lathe reliability test device utilizing finite element method for loading Download PDFInfo
- Publication number
- CN105619179A CN105619179A CN201610175431.0A CN201610175431A CN105619179A CN 105619179 A CN105619179 A CN 105619179A CN 201610175431 A CN201610175431 A CN 201610175431A CN 105619179 A CN105619179 A CN 105619179A
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- loading
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- sleeping carriage
- heavy
- heavy duty
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 7
- 238000011058 failure modes and effects analysis Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0966—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring a force on parts of the machine other than a motor
Abstract
The invention relates to a heavy duty horizontal lathe reliability test device utilizing a finite element method for loading and belongs to the field of mechanical test equipment. The device comprises a heavy duty horizontal lathe to be tested, wherein more than two loading units form a loading system to be used for simulating the gravity load of workpieces in various shape, borne by the heavy duty horizontal lathe; the more than two loading units are fixedly connected to a guide rail of the heavy duty horizontal lathe by using bolts via a concave base; a standard workpiece penetrates through arc-shaped clamping units on the loading units, and two ends of the standard workpiece are respectively clamped between a three-jaw chuck and a tail seat of the heavy duty horizontal lathe. The device has the advantages that by applying different tension and pressure to each loading unit, the load of workpieces with different thickness and shape to the heavy duty horizontal lathe can be simulated, and the quantity of the arc-shaped clamping units can be adjusted according to the lengths of different positions of a workpiece needing to be simulated, so that uniform load can be applied to the workpieces, and self weight and change of weight during machining of the workpiece can be simulated to the greatest extent.
Description
Technical field
The invention belongs to mechanical testing apparatus field, it relates to a kind of heavy sleeping carriage reliability test utilizing finite element method for simulating to load various workpieces.
Background technology
Heavy is the urgent need equipment that the relevant industries such as the extraordinary equipment of Chinese large-sized electric power, space flight and aviation, large ship, traffic and large-scale metallurgical and mine develop with extra-heavy type lathe, is the strategic materials being related to the national economic development and comprehensive strength. Heavy sleeping carriage is applicable to the axle class to unlike material, round shape and disk-shaped part and carries out in size, end face, grooving, cut-out, bore hole, car boring half essence and the precision work such as outer cone. The volume of part processed due to heavy sleeping carriage is big, Heavy Weight, general single workpiece weight can reach tens tons even several hundred tons, compared to the gravity of workpiece, cutting force in the course of processing is negligible, and this is also the maximum difference of the load that is operationally subject to of heavy sleeping carriage and other machine tools. The workpiece of heavy sleeping carriage processing is different, and the weight of every section is also different, and in the course of processing, the weight of workpiece self also can change gradually, so the cost that the method being difficult to the workpiece by tradition loading different shapes carries out simulating and testing like this is extremely expensive. In order to expose the thin soft link of lathe under practical working situation, evaluate the reliability of heavy sleeping carriage, it is necessary to set up the load that reliability test platform is simulated heavy sleeping carriage to greatest extent and is subject in actual military service situation, carry out reliability accelerated test.
At present, the domestic reliability test about heavy sleeping carriage and method are very few; Meanwhile, good analogy method be there is no yet for the different loads under different workpieces shape. Finite Element Method is a kind of set by discrete for the continuum cell cube turning to some limited sizes, to solve the numerical method of continuum mechanics problem, it is possible to make the finite degrees of freedom problem that a continuous print absolute liBerty degree problem becomes discrete. The present invention uses for reference finite element and the thought of global discretization is loaded by heavy sleeping carriage, the load situation that simulated machine tool is subject to.
In order to improve the reliability of heavy sleeping carriage, reduce the production loss owing to fault causes, need heavy sleeping carriage is carried out reliability accelerated test, fault data are adopted its weak links of methods analyst such as failure mode and effect analysis (FMEA), fault tree analysis (FTA), and proposes Optimal improvements method. Therefore, study a kind of heavy sleeping carriage reliability test simulating various working and there is important actual meaning. For the problems referred to above, the present invention provides a kind of heavy sleeping carriage reliability test utilizing Finite Element Method to load.
Summary of the invention
The present invention provides a kind of heavy sleeping carriage reliability test utilizing Finite Element Method to load, it is intended that the workpiece of simulation different shapes, weight, to the load situation of heavy sleeping carriage complete machine, can conveniently simulate different load situations according to different shapes workpiece.
The technical scheme that the present invention takes is: comprising a tested heavy sleeping carriage, two or more loading unit constitutes loading system, for simulating the gravity loading of the different shape workpiece that heavy sleeping carriage is subject to; Described two or more loading unit is fixedly connected on the guide rail of heavy sleeping carriage by spill base bolt, the thread jaw chuck that standard workpiece is clamped in heavy type sleeping carriage respectively through the arc grip unit on loading unit, two ends and tailstock.
Loading unit of the present invention comprises arc grip unit, roller, roller bearing, female bracket, Anti-off bolt, pressure sensor, hydraulic pressure extension bar, hydro-cylinder, hydraulic pressure oil supply hole, hydraulic pressure outlet-port and spill base, hydraulic pressure oil supply hole, hydraulic pressure outlet-port is for being connected with the hydraulic efficiency system of outside, four rolling is arranged in the pit of arc grip unit by roller bearing, arc grip unit is connected with the groove fit in female bracket by the projection of lower section and is fixed by anti-the taking off of Anti-off bolt, the lower end of female bracket is connected with pressure sensor screw top, pressure sensor is fixed on the upper surface of hydraulic pressure extension bar through the bolt hole of pressure sensor surrounding by six uniform interior hexagon bolts, rectangle perforated flat plate it is processed with bottom hydro-cylinder, the upper surface of spill base it is connected in by four bolts.
In four rolling of the present invention, the roller of the roller of two tops and two lower sections is symmetrical in the horizontal direction, and the roller on the roller in two left sides and two right sides is vertically symmetrical.
The length of the workpiece different sites that the quantity of arc grip unit of the present invention is simulated as required regulates.
The invention has the beneficial effects as follows:
1. the present invention has used for reference the thought of finite element, devises a kind of loading unit that can regulate, and by each loading unit is applied different pressures, simulation different thicknesses, the workpiece of different shapes is to the load of heavy sleeping carriage.
2. the loading unit of the present invention is made up of several arc grip unit, use for reference the thought of finite element, the length of the workpiece different sites that the quantity of arc grip unit can be simulated as required regulates, for workpiece applies uniformly distributed load, simulate the change of weight in the deadweight of workpiece and the course of processing to greatest extent.
3. each arc grip unit of the present invention all has the roller of four square type arrangements, it is possible to realize the decomposition that uniformly distributed load loads and moves, pressure can also be applied when workpiece rotates.
Accompanying drawing explanation
Fig. 1 is the integrally-built axonometric projection graph of the present invention;
Fig. 2 is the axonometric projection graph of loading unit of the present invention;
Fig. 3 is the explosive view of loading unit of the present invention;
Fig. 4 is the sectional view of arc grip unit in loading unit of the present invention;
Fig. 5 is the workpiece sample that the present invention can simulate;
In figure: 1. heavy sleeping carriage, 101. guide rails, 102. thread jaw chucks, 103. tailstocks, 2. standard workpiece, 3. loading unit, 301. hydro-cylinder, 302. spill bases, 303. hydraulic pressure oil supply holes, 304. hydraulic pressure outlet-ports, 305. arc grip unit, 306. female bracket, 307. Anti-off bolt, 308. hydraulic pressure extension bars, 309. pressure sensors, 310. rollers, 311. roller bearings, A. workpiece sample first paragraph, B. workpiece sample the 2nd section, C. workpiece sample the 3rd section, D. workpiece sample the 4th section, E. workpiece sample the 5th section.
Embodiment
Comprising a tested heavy sleeping carriage 1, two or more loading unit 3 constitutes loading system, for simulating the gravity loading of the different shape workpiece that heavy sleeping carriage is subject to; Described two or more loading unit 3 is fixedly connected on the guide rail 101 of heavy sleeping carriage 1 by spill base 302 with bolt, the thread jaw chuck 102 that standard workpiece 2 is clamped in heavy sleeping carriage 1 respectively through the arc grip unit 305 on loading unit, two ends and tailstock 103, the workpiece shape that the number of loading unit 3 is simulated according to reality increases and decreases;
Loading unit 3 of the present invention comprises arc grip unit 305, roller 310, roller bearing 311 female bracket 306, Anti-off bolt 307, pressure sensor 309, hydraulic pressure extension bar 308, hydro-cylinder 301, hydraulic pressure oil supply hole 303, hydraulic pressure outlet-port 304 and spill base 302, hydraulic pressure oil supply hole 303, hydraulic pressure outlet-port 304 is connected for the hydraulic efficiency system with outside, four rolling 310 is arranged in the pit of arc grip unit 305 by roller bearing 311, arc grip unit 305 is connected with the groove fit in female bracket 306 by the projection of lower section and passes through anti-the taking off of Anti-off bolt 307 and fix, for transmitting the pressure of vertical direction, female bracket 306 times ends and pressure sensor 309 top are threaded connection, pressure sensor 309 is fixed on the upper surface of hydraulic pressure extension bar 308 through the bolt hole of pressure sensor 309 surrounding by six uniform interior hexagon bolts, rectangle perforated flat plate it is processed with bottom hydro-cylinder 301, the upper surface of spill base 302 it is connected in by four bolts,
In four rolling 310 of the present invention, the roller of the roller of two tops and two lower sections is symmetrical in the horizontal direction, and the roller on the roller in two left sides and two right sides is vertically symmetrical;
The length of the workpiece different sites that the quantity of arc grip unit 305 of the present invention is simulated as required regulates.
Consulting Fig. 5, the present invention can simulate the weight load of different shape workpiece by several loading units 7, and the bold portion shown in Fig. 4 is the multistage axle of an arbitrary shape, and dotted portion is standard workpiece 2; Standard workpiece 2 is divided into: A section left part, A section, B section, C section, D section, E section, E section right part, and each part mentioned above is connected with a loading unit 3 respectively, carries out Kinematic Decomposition by roller 310, it is achieved dynamic load when workpiece rotates. The length ratio standard workpiece 2 of axle is short, loading unit 3 can being utilized to provide anchorage force upwards to offset the weight of standard workpiece 2 for A section left part and E section right part, described pressure sensor 309 Real-Time Monitoring loading force feeds back to control unit and realizes closed-loop control. The diameter ratio standard workpiece 2 of A section, C section, D section is big, and standard workpiece 2 is provided the weight of a downward pulling force simulation increase by corresponding loading unit 3. The diameter ratio standard workpiece 2 of B section, E section is little, and it is provided an anchorage force upwards to offset unnecessary weight by corresponding loading unit 3. The quantity of the arc grip unit 305 on each loading unit 3 can regulate according to the length of correspondent section axle; The loading regime of finite element theory is utilized, it is possible to the gravity loading of the workpiece that ratio standard workpiece 2 is short or length is identical of simulation arbitrary shape by this kind.
The present invention is before carrying out reliability test, it is necessary to being adjusted by loading unit 3 according to the workpiece shape of simulation, the length of the workpiece different sites that the quantity of arc grip unit 305 can be simulated as required regulates, it is achieved uniformly distributed load loads. If needing simulation round shape and disk-shaped part, it is also possible to adopt same theoretical adjustment loading unit 3 and arc grip unit 305, it is achieved to increase or the minimizing of standard workpiece weight. By the rotating speed of the heavy sleeping carriage of Controlling System manipulation and runtime, the workpiece shape needing simulation can be adjusted before carrying out accelerated test every time, thus monitor the failure condition when heavy sleeping carriage is subject to different loads. Fault data are adopted the weak link of the heavy sleeping carriage of the methods analysts such as failure mode and effect analysis (FMEA), fault tree analysis (FTA), and proposes Optimal improvements method. The design of the heavy each system of sleeping carriage and component is very helpful by the present invention, has important practical value for the heavy sleeping carriage component of raising and even whole aircraft reliability.
Claims (4)
1. one kind utilizes the heavy sleeping carriage reliability test that Finite Element Method loads, comprise a tested heavy sleeping carriage, it is characterized in that, two or more loading unit constitutes loading system, for simulating the gravity loading of the different shape workpiece that heavy sleeping carriage is subject to; Described two or more loading unit is fixedly connected on the guide rail of heavy sleeping carriage by spill base bolt, the thread jaw chuck that standard workpiece is clamped in heavy type sleeping carriage respectively through the arc grip unit on loading unit, two ends and tailstock.
2. a kind of heavy sleeping carriage reliability test utilizing Finite Element Method to load according to claim 1, it is characterized in that, described loading unit comprises arc grip unit, roller, roller bearing, female bracket, Anti-off bolt, pressure sensor, hydraulic pressure extension bar, hydro-cylinder, hydraulic pressure oil supply hole, hydraulic pressure outlet-port and spill base, hydraulic pressure oil supply hole, hydraulic pressure outlet-port is for being connected with the hydraulic efficiency system of outside, four rolling is arranged in the pit of arc grip unit by roller bearing, arc grip unit is connected with the groove fit in female bracket by the projection of lower section and is fixed by anti-the taking off of Anti-off bolt, the lower end of female bracket is connected with pressure sensor screw top, pressure sensor is fixed on the upper surface of hydraulic pressure extension bar through the bolt hole of pressure sensor surrounding by six uniform interior hexagon bolts, rectangle perforated flat plate it is processed with bottom hydro-cylinder, the upper surface of spill base it is connected in by four bolts.
3. a kind of heavy sleeping carriage reliability test utilizing Finite Element Method to load according to claim 2, it is characterized in that, in described four rolling, the roller of the roller of two tops and two lower sections is symmetrical in the horizontal direction, and the roller on the roller in two left sides and two right sides is vertically symmetrical.
4. a kind of heavy sleeping carriage reliability test utilizing Finite Element Method to load according to claim 2, it is characterised in that, the length of the workpiece different sites that the quantity of described arc grip unit is simulated as required regulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175431.0A CN105619179B (en) | 2016-03-25 | 2016-03-25 | A kind of heavy sleeping carriage reliability test loaded using finite element method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610175431.0A CN105619179B (en) | 2016-03-25 | 2016-03-25 | A kind of heavy sleeping carriage reliability test loaded using finite element method |
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| Publication Number | Publication Date |
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| CN105619179A true CN105619179A (en) | 2016-06-01 |
| CN105619179B CN105619179B (en) | 2017-11-14 |
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| CN201610175431.0A Expired - Fee Related CN105619179B (en) | 2016-03-25 | 2016-03-25 | A kind of heavy sleeping carriage reliability test loaded using finite element method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679957A (en) * | 2017-01-09 | 2017-05-17 | 吉林大学 | Synchronously-loading heavy-duty horizontal lathe carrier reliability test device and method for lathe carrier reliability test by such device |
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| CA2639810A1 (en) * | 2007-10-22 | 2009-04-22 | Erowa Ag | Clamping fixture including a chuck for releasably locating a workpiece pallet |
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| EP2080584A1 (en) * | 2008-01-17 | 2009-07-22 | VOLLMER WERKE Maschinenfabrik GmbH | Method and device for machining workpieces |
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| CN205520747U (en) * | 2016-03-25 | 2016-08-31 | 吉林大学 | Utilize loaded heavy sleeping carriage reliability test device of finite element method |
-
2016
- 2016-03-25 CN CN201610175431.0A patent/CN105619179B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2639810A1 (en) * | 2007-10-22 | 2009-04-22 | Erowa Ag | Clamping fixture including a chuck for releasably locating a workpiece pallet |
| DE102007062951A1 (en) * | 2007-12-21 | 2009-06-25 | Robert Bosch Gmbh | Machine tool device |
| EP2080584A1 (en) * | 2008-01-17 | 2009-07-22 | VOLLMER WERKE Maschinenfabrik GmbH | Method and device for machining workpieces |
| CN102384844A (en) * | 2011-10-17 | 2012-03-21 | 吉林大学 | Reliability test device of machine tool spindle dynamically loaded by electromagnet and dynamometer in combined manner |
| CN202255866U (en) * | 2011-10-17 | 2012-05-30 | 吉林大学 | Reliability test device of spindle of machine tool subject to hybrid dynamic loading by electromagnet and dynamometer |
| CN102889983A (en) * | 2012-09-28 | 2013-01-23 | 吉林大学 | Machine tool spindle reliability test bed based on mixed loading of electro-hydraulic servo and dynamometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679957A (en) * | 2017-01-09 | 2017-05-17 | 吉林大学 | Synchronously-loading heavy-duty horizontal lathe carrier reliability test device and method for lathe carrier reliability test by such device |
| CN106679957B (en) * | 2017-01-09 | 2023-09-05 | 吉林大学 | Device and method for testing reliability of synchronous loading heavy sleeper carriage |
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| CN105619179B (en) | 2017-11-14 |
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