CN201259483Y

CN201259483Y - Friction wear property test apparatus for machine tool guide rail

Info

Publication number: CN201259483Y
Application number: CNU200820041317XU
Authority: CN
Inventors: 蒋书运
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2008-08-19
Filing date: 2008-08-19
Publication date: 2009-06-17
Anticipated expiration: 2018-08-19

Abstract

The utility model relates to a friction abrasion performance test device for a guide rail of a machine tool, and relates to a guide-rail pair friction abrasion test device, which belongs to the friction technical field, and comprises a test system and a measuring system, wherein, an oil baffle plate of the test system is provided with a lower sample platform, and the oil baffle plate, the lower sample platform, a first sensor installation bracket and a second sensor installation bracket are respectively arranged on a base, and a flat V-shaped guide rail is arranged between the lower sample platform and the base; an upper sample clamp is arranged between the first and the second sensor installation brackets, and the first and the second sensor installation brackets are respectively connected with a cover plate through a supporting rod. A novel machine-tool guide-rail friction abrasion test machine that can simulate the real work conditions is realized; the guide rail can be directly adopted as the sample; the device can be used for the rapid assessment of the material and the lubricant medium of the guide-rail pair, and also can be used for the acceleration service life of a straight-line guide rail pair and a rolling guide rail pair.

Description

A kind of machine tool guiding rail friction wear performance test apparatus

Technical field

The utility model relates to a kind of guideway frictional wear test device, is specifically related to V-type, Λ type rolling steel guide rail and line slideway frictional wear test device, belongs to the tribology technical field.

Background technology

Rolling guide has the autokinesis height, advantages such as friction force is little, and low-speed motion is steady are moving components commonly used in the lathe, the straight-line rolling guide set of Sheng Chaning is less demanding and install easy to adjustly to datum clamp face because of it in recent years, also obtains promotion and application in machine industry gradually.All have direct influence to machine finish, life-span the serviceable life of guide rail.After lathe used certain hour, uneven wear appearred in guide pass, and followed the tired spot corrosion of rolling body, caused that main shaft installation slide plate is offset in surface level and vertical plane, causes the workpiece processing precise decreasing.Thereby hope improves parameters such as guideway structure, material, process of surface treatment, lubricating system, reduce the guideway wearing and tearing, prolong guide rail service time as far as possible, improve the lathe life-span: develop the research technique in a kind of quick evaluation line slideway life-span simultaneously, for product selects to provide foundation.

Have not yet to see the special-purpose rubbing wear device that is applied to guideway.Standard rubbing wear machine such as the U.S. CE TR UMT-2 of company type rubbing wear machine, maximum load 1000N, the to-and-fro movement of energy analog linearity, but experience shows that the specimen test that carries out does not often have good correspondence with actual service test on the standard rubbing machine.And adopt in the conventional reciprocating formula friction wear testing machine of specimen test research material tribological property, more following sample platform is utilized common rail plate to make the supporting guiding parts or is utilized rolling bearing, the former is that friction force is big at limitation, and the latter is obvious in big load time point contact or the secondary fatigue problem of line contact lower guideway.Simultaneously, test load often use lever to load or or weight directly load, load range is limited.Reciprocating mechanism adopts crank block more, and the ram travel range of adjustment is little.When being that rated load is big by test specimen, when straight line that friction factor is little or rolling guide, life-span, load range and the measuring accuracy of conventional reciprocating formula rubbing wear device can not satisfy testing requirements.

Summary of the invention

The utility model purpose provides a kind of novel (straight line) rolling guide friction wear testing machine that can simulate actual condition, directly adopt guide rail to make sample, the rapid evaluation that can be used for guideway material, lubricant medium also can be used for the machine tool guiding rail friction wear performance test apparatus of the accelerated life test of line slideway auxiliary and rolling guide-rail pairs.

The utility model adopts following technical scheme for achieving the above object:

The utility model comprises pilot system and measuring system, and pilot system comprises linear electric motors, hinge, base, following sample platform, oil weir, goes up specimen holder, first sensor mounting bracket, second mounting frame for sensor, upper mounting plate, piston, hydraulic cylinder cover plate, hydraulic cylinder, support bar, hydraulic oil unit; Sample platform is set down on the oil baffle plate, one side of following sample platform is connected with linear electric motors by hinge, the opposite side of following sample platform is provided with first sensor mounting bracket, second mounting frame for sensor respectively, oil baffle plate, following sample platform, first sensor mounting bracket, second mounting frame for sensor are provided with on the base respectively, flat-V guide rail is set between following sample platform and the base, flat-the laminating processing of V guide rail surface, flat-V guide rail is arranged in the guide-track groove of base; Between first sensor mounting bracket, second mounting frame for sensor specimen holder is set, upper mounting plate is set on the last specimen holder, piston is set on the upper mounting plate, cover plate is set on the piston, and first sensor mounting bracket, second mounting frame for sensor are connected with cover plate by support bar respectively; Hydraulic jack is set on the cover plate, and hydraulic jack is connected with hydraulic oil unit; Measuring system comprises three axial force transducers, infrared temperature probe, photoelectric sensor, data acquisition circuit and computing machine; Three axial force transducers are arranged between specimen holder and the piston; Infrared temperature probe is installed on the base and perpendicular to guide pass and arranges; Photoelectric sensor is installed perpendicular to guideway direction of motion, and aims at sample platform side down.

Reasonablely be, guide rail of the present utility model be the linear pattern of surperficial laminating processing flat-the V guide rail, linear pattern is flat-the V guide rail is arranged in the guide-track groove of base;

Reasonablely be, guide rail of the present utility model is a V-type rolling steel guide rail, and V-type rolling steel guide rail is arranged in the guide-track groove of base.

Reasonable is that flow controller, surplus valve are set respectively on the connecting tube between hydraulic jack of the present utility model and the hydraulic oil unit.

A pair of lower guideway sample of the present utility model is installed on down on the sample platform, and a pair of upper rail sample is installed in the specimen holder, and utilizes the screw fine setting upper rail sample position of going up specimen holder one side, motion smoothing between lower guideway in the assurance.Adjust the hydraulic cylinder oil pressure by throttling valve, adjust the load that puts on the pair of guide rails pair.Linear electric motors drag down the sample platform to-and-fro movement, record the load on the friction force and guideway between guideway by three axial force transducers; Measure the guideway temperature by infrared temperature probe, and in software, adopt the method for getting average to reduce test error; Record guideway to-and-fro movement number of times by photoelectric sensor; Measuring-signal inserts data processing circuit, sends into the single-chip microcomputer pre-service after the A/D conversion, sends into computing machine again and is handled by upper computer software, calculates friction factor, guide pass temperature rise, to-and-fro movement speed and test period between guideway.

Above-mentioned machine tool guiding rail friction wear testing machine, subjects are line slideway or rolling guide, and removable slide rail anchor clamps are installed on down in the middle of the sample platform, and line slideway or rolling guide are installed on the test fixture.

The utility model adopts technique scheme, compared with prior art has following advantage:

1, replace rolling guide and rail plate commonly used with plastic-sticking guiding rail, its friction factor is low, the load-bearing capacity height, and simple in structure easy to process, broken through short shortcoming of conventional reciprocating formula rubbing wear machine life-span.

2, realize big load with the hydraulic loaded mode, and avoided the lever load mode when high-speed motion, easily to cause the problem of vibratory impulse.

3, sample platform adopts linear motor driving down, and to-and-fro movement speed is easy to adjust, wide stroke.Three axial force transducers are directly measured guide friction force, improve data accuracy greatly.

4, infrared temperature probe is measured the guideway temperature rise, and adopts the method for getting average in the period of motion, has solved the difficult problem that the guideway temperature is directly measured.

5, the following sample platform of particular design, but clamping plurality of specifications V-type, Λ type rolling steel guide rail and line slideway, trial stretch is wide.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the structural representation of the utility model V-type rolling steel guide rail.

Fig. 4 is the structural representation that the utility model uses rolling guide.

Fig. 5 is the structural representation that the utility model uses line slideway.

In the accompanying drawing: 1, linear electric motors, 2, hinge, 3, base, 4, following sample platform, 5, oil weir, 6, last specimen holder, 7, three axial force transducers, 8, infrared temperature probe, 9, photoelectric sensor, 10, the first sensor mounting bracket, 11, second mounting frame for sensor, 12, three axial force transducer upper mounting plates, 13, piston, 14, the hydraulic cylinder cover plate, 15, hydraulic cylinder, 16, support bar, 17, flow controller, 18, surplus valve, 19, hydraulic oil unit, 20, lower guideway sample locating piece, 21, the lower guideway sample, 22, dust board, 23, the upper rail sample, 24, upper rail sample locating piece, 25, line slideway slide rail anchor clamps, 26, the line slideway slide rail, 27, the line slideway slide block, 28, voussoir, 29, line slideway slide block locating piece.

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 pilot system and measuring system, and pilot system comprises linear electric motors 1, hinge 2, base 3, following sample platform 4, oil weir 5, goes up specimen holder 6, first sensor mounting bracket 10, second mounting frame for sensor 11, upper mounting plate 12, piston 13, hydraulic cylinder cover plate 14, hydraulic cylinder 15, support bar 16, hydraulic oil unit 19; Sample platform 4 is set down on the oil baffle plate 5, one side of following sample platform 4 is connected with linear electric motors 1 by hinge 2, the opposite side of following sample platform 4 is provided with first sensor mounting bracket 10, second mounting frame for sensor 11 respectively, oil baffle plate 5, following sample platform 4, first sensor mounting bracket 10, second mounting frame for sensor 11 are provided with respectively on the base 3, flat-V guide rail is set between following sample platform 4 and the base 3, flat-the laminating processing of V guide rail surface, flat-V guide rail is arranged in the guide-track groove of base 3; Between first sensor mounting bracket 10, second mounting frame for sensor 11 specimen holder 6 is set, upper mounting plate 12 is set on the last specimen holder 6, piston 13 is set on the upper mounting plate 12, cover plate 14 is set on the piston 13, and first sensor mounting bracket 10, second mounting frame for sensor 11 are connected with cover plate 14 by support bar 16 respectively; Hydraulic jack 15 is set on the cover plate 14, and hydraulic jack 15 is connected with hydraulic oil unit 19;

Measuring system comprises three axial force transducers 7, infrared temperature probe 8, photoelectric sensor 9, data acquisition circuit and computing machine; Three axial force transducers 7 are arranged between specimen holder 6 and the piston 13; Infrared temperature probe 8 is installed on the base 3 and perpendicular to guide pass and arranges; Photoelectric sensor 9 is installed perpendicular to guideway direction of motion, and aims at sample platform 4 sides down.

Reasonablely be, guide rail of the present utility model be the linear pattern of surperficial laminating processing flat-the V guide rail, linear pattern is flat-the V guide rail is arranged in the guide-track groove of base 3;

As shown in Figure 3, reasonablely be, guide rail of the present utility model is a V-type rolling steel guide rail, and V-type rolling steel guide rail is arranged in the guide-track groove of base 3.

Reasonable is that flow controller 17, surplus valve 18 are set respectively on the connecting tube between hydraulic jack 15 of the present utility model and the hydraulic oil unit 19.

Fig. 4 is the disclosed V-type rolling of the utility model steel guide rail embodiment.Before the test, a pair of lower guideway sample 21 is installed on down on the sample platform 4, a pair of upper rail sample 23 is installed in the specimen holder 6, and utilizes screw fine setting upper rail sample 23 positions of going up specimen holder 6 one sides, motion smoothing between supreme lower guideway.One side of lower guideway sample 21 is provided with lower guideway sample locating piece 20, and opposite side is provided with dust-blocking plate 22.The arranged outside upper rail sample locating piece 24 of upper rail sample 23.Open hydraulic oil unit 19, adjust the hydraulic cylinder oil pressure, adjust the load that puts on the guideway by throttling valve 17.Linear electric motors 1 drag down sample platform 4 to-and-fro movements, record the load on the friction force and guideway between guideway by three axial force transducers 7; Measure the guideway temperature by infrared temperature probe 8, and adopt the method for getting average to reduce test error; Record guideway to-and-fro movement number of times by photoelectric sensor 9; Measuring-signal inserts data processing circuit, sends into the single-chip microcomputer pre-service after the A/D conversion, sends into computing machine through the RS232 interface again and is handled by upper computer software, calculates friction factor, guide pass temperature rise, to-and-fro movement speed and test period between guideway.

Fig. 5 is the disclosed line slideway embodiment of the utility model.Change first sensor mounting bracket 10, infrared temperature probe 8 is aimed at before 26 interviews of line slideway slide rails test, line slideway slide rail anchor clamps 25 are installed on down in the sample platform 4 middle mounting grooves, by the side screw lock, line slideway slide rail 26 is installed in the line slideway slide rail anchor clamps 25, line slideway slide block 27 is installed in the specimen holder 6, and by voussoir 28 clampings, voussoir 28 is positioned at the right side of line slideway slide block 27, and the left side of line slideway slide block 27 is provided with line slideway slide block locating piece 29.The follow-up test step is identical with V-type rolling steel guide rail embodiment.

Claims

1. A machine tool guide rail friction and wear performance test device is characterized in that it includes a test system and a measurement system. The test system includes a linear motor (1), a hinge (2), a base (3), a lower sample platform (4), and a stopper. Oil plate (5), upper sample holder (6), first sensor mounting bracket (10), second sensor mounting bracket (11), upper mounting plate (12), piston (13), hydraulic cylinder cover (14 ), hydraulic cylinder (15), support rod (16), hydraulic oil station (19); the lower sample platform (4) is set on the oil baffle plate (5), and one side of the lower sample platform (4) passes through the hinge (2) Connected with the linear motor (1), the other side of the lower sample platform (4) is respectively provided with the first sensor mounting bracket (10), the second sensor mounting bracket (11), the oil retaining plate (5), the lower The sample platform (4), the first sensor mounting bracket (10), and the second sensor mounting bracket (11) are respectively arranged on the base (3), and guide rails are set between the lower sample platform (4) and the base (3). Set in the guide rail groove of the base (3); set the upper sample clamp (6) between the first sensor mounting bracket (10) and the second sensor mounting bracket (11), and set the upper sample clamp (6) Mounting plate (12), the piston (13) is set on the upper mounting plate (12), the cover plate (14) is set on the piston (13), the first sensor mounting bracket (10), the second sensor mounting bracket (11) pass through respectively The support rod (16) is connected with the cover plate (14); the hydraulic cylinder (15) is arranged on the cover plate (14), and the hydraulic cylinder (15) is connected with the hydraulic oil station (19);

The measurement system includes a three-axis force sensor (7), an infrared temperature measuring probe (8), a photoelectric sensor (9), a data acquisition circuit and a computer; the three-axis force sensor (7) is arranged between the sample holder (6) and the piston (13); the infrared temperature measuring probe (8) is installed on the base (3) and arranged perpendicular to the surface of the guide rail; the photoelectric sensor (9) is installed perpendicular to the direction of movement of the guide rail pair, and is aligned with the lower sample platform (4) side.

2. The friction and wear performance test device for machine tool guide rails according to claim 1, characterized in that the above-mentioned guide rails are linear flat-V guide rails with plastic-coated surfaces, and the linear flat-V guide rails are arranged in the guide rail grooves of the base (3) Inside;

3. The friction and wear performance test device of machine tool guide rail according to claim 1, characterized in that said guide rail is a V-shaped rolling steel guide rail, and the V-shaped rolling steel guide rail is arranged in the guide rail groove of the base (3).

4. The device for testing the friction and wear performance of machine tool guide rails according to claim 1, characterized in that: throttles (17), overflows and flow valve (18).