CN204556253U - A kind of ball screw assembly, wear measurement testing table - Google Patents

A kind of ball screw assembly, wear measurement testing table Download PDF

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Publication number
CN204556253U
CN204556253U CN201520208079.7U CN201520208079U CN204556253U CN 204556253 U CN204556253 U CN 204556253U CN 201520208079 U CN201520208079 U CN 201520208079U CN 204556253 U CN204556253 U CN 204556253U
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CN
China
Prior art keywords
ball screw
screw assembly
slide plate
guide rail
mounting hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520208079.7U
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Chinese (zh)
Inventor
汤文成
徐楠楠
李建勋
徐向红
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Southeast University
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Southeast University
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Filing date
Publication date
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Priority to CN201520208079.7U priority Critical patent/CN204556253U/en
Application granted granted Critical
Publication of CN204556253U publication Critical patent/CN204556253U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Ball screw assembly, abrasion amount measuring testing table of the present utility model, comprise base plate, two of each band one slide block is set in parallel in the guide rail of both side ends above base plate,, the slide plate that be fixedly installed in two slide blocks on vertical with guide rail, described slide plate offers a mounting hole, ball screw assembly, is through mounting hole, and leading screw nut is fixedly connected with mounting hole, lead screw shaft and guide rail parallel; Described lead screw shaft one end is connected with shaft coupling through bearing seat, and the shaft coupling other end connects servomotor; Described servomotor side is provided with the direction of motion constant force output device consistent with ball screw assembly; Displacement transducer is provided with bottom described slide plate.Of the present utility model test bed, in screw mandrel wear process, slide plate can be driven to make the rectilinear motion of precise speed by lead screw shaft, determine position by displacement measurement module, limit working range, can to test this ball-screw wear extent at any time under the effect of constant axial pretightning force.

Description

A kind of ball screw assembly, wear measurement testing table
Technical field
The utility model belongs to ball screw assembly, dynamic performance technical field, is specifically related to ball screw assembly, wear extent test experimental bed.
Background technology
Precise ball screw pair is the key feature of numerically-controlled machine, and the height of its manufacture level determines the precision height of numerically-controlled machine to a great extent.After a certain period of use time, surfacing has part and peels off ball screw assembly, and ball and track produce gap, directly affect the equipment use precision such as lathe.The physical dimension of ball and track, material technology, processing technology, the operating mode used are correct understanding leading screw mechanical property, wearing and tearing, the key in life-span.Usual people take the wear extent of the leading screw region measurement lead screw pair of wearing and tearing apart, waste time and energy, and being dismounted for multiple times, the wear extent of repetitive measurement lead screw pair, easy coup injury leading screw, repeats assembling and may produce new trueness error, and take the rear dress that easily causes apart and unmatch or assemble pretty troublesome.
Therefore, it is very necessary for realizing lead screw pair carries out mechanical property entry experiment test when not tearing open, and the exploitation of relevant experiment test device is indispensable.Along with engineering goods, numerically-controlled machine are to high speed, high precision int, Composite and environmental protection future development, more and more higher requirement is proposed to the performance of ball screw assembly.Lead screw pair wear extent lacks along with experimental data, produces adverse influence to the research of lead screw pair mechanical model.Wear extent is the important usability parameter of ball screw assembly, it directly have influence on positioning precision, serviceable life energy loss, temperature change (undue temperature rise will cause lubricant worsen, wearing and tearing aggravation, even cause working surface to be burnt) and noise, vibration change, therefore the real-time measurement of wear extent is that ball screw assembly, is necessary.
Utility model content
For prior art Problems existing, the utility model provides a kind of ball screw assembly, wear measurement testing table, structure is simple, under the prerequisite of not taking ball-screw apart, energy indirect inspection ball-screw wear extent, and the ball screw assembly, wear extent of energy repetitive measurement different times, ensure that leading screw is excellent and convenient test is easy, reliable results.
The technical solution of the utility model is: a kind of ball screw assembly, wear measurement testing table, comprise base plate, two of each band one slide block is set in parallel in the guide rail of both side ends above base plate,, the slide plate that be fixedly installed in two slide blocks on vertical with guide rail, described slide plate offers a mounting hole, ball screw assembly, is through mounting hole, and leading screw nut is fixedly connected with mounting hole, lead screw shaft and guide rail parallel; Described lead screw shaft one end is connected with shaft coupling through bearing seat, and the shaft coupling other end connects servomotor; Described servomotor side is provided with the direction of motion constant force output device consistent with ball screw assembly; Displacement transducer is provided with bottom described slide plate.
Further, bottom described constant force output device, be provided with cushion block two, bottom described bearing seat, be provided with cushion block one.
Further, below described slide plate, be provided with the displacement transducer guide plate be slidably connected with displacement transducer, institute's displacement sensors guide plate and guide rail parallel.
Further, described constant force output device is RCP2-RA10C-I-86P-2.5-50-P2-P-B model electricity cylinder.Carry the function measuring electric cylinder push rod shift length, can release at the push rod of electric cylinder and while being pressed on slide plate with constant force, measure push rod shift value.
The beneficial effects of the utility model: compared with prior art, the utility model tool has the following advantages: the utility model is ball screw assembly, abrasion amount measuring testing table, indirectly measures lead screw pair wear extent in real time.Usually, people need the leading screw after taking wearing and tearing apart, waste time and energy, and being dismounted for multiple times, the wear extent of repetitive measurement lead screw pair, so easy coup injury leading screw, repeats assembling and may produce new trueness error, and takes the rear dress that easily causes apart and unmatch or assemble pretty troublesome.Test data of experiment will require to take multiple measurements in lead screw pair wear process, and record numerical value, compares numerical value.Under the prerequisite of not taking ball-screw apart, the utility model device energy indirect inspection ball-screw wear extent, this measuring method still first in the industry cycle.Due to complicacy and the diversity of lead screw pair work operating mode, this technology energy repetitive measurement wear extent, ensure that leading screw is excellent and convenient test is easy, reliable results.Servomotor makes leading screw according to requirement of experiment speed and acceleration even running.High-precision displacement transducer strictly controls screw travel scope and start-stop position.Constant force output device high precision constant force thrust is to the pretightning force needed for feed screw nut, and the devices such as its measuring accuracy depends primarily on force snesor and displacement transducer, and therefore measuring accuracy is relatively high, such as high-precision electric cylinder can meet the accuracy requirement of test.
The assembly of this experiment table is less, and structure is simple, and therefore processing cost is lower, simple to operate; In addition, each size of components of this device is less, therefore easy to carry.
Accompanying drawing explanation
Fig. 1 is test experimental bed schematic diagram.
Fig. 2 is test experimental bed cut-open view.
Fig. 3 is base arrangement schematic diagram.
Fig. 4 is guide rail structure schematic diagram.
Fig. 5 is slide block structure schematic diagram.
Fig. 6 is slide plate schematic diagram.
Fig. 7 is servomotor structural representation.
Fig. 8 is shaft coupling schematic diagram.
Fig. 9 is bearing block structure schematic diagram.
Figure 10 is backing plate one structural representation.
Figure 11 is lead screw shaft structural representation.
Figure 12 is leading screw nut structure schematic diagram.
Figure 13 is displacement sensor structure schematic diagram.
Figure 14 is constant force output device structural representation.
Figure 15 is cushion block two structural representation.
Figure 16 is motor fixing seat structural representation.
Have in figure: 1 base plate, 2 guide rails, 3 slide blocks, 4 slide plates, 5 servomotors, 6 shaft couplings, 7 bearing seats, 8 backing plate one, 9 lead screw shaft, 10 leading screw nuts, 11 displacement transducer slide blocks, 12 displacement transducer bases, 13 constant force output device, 14 cushion block two, 15 motor fixing seat.
Embodiment
Below in conjunction with Figure of description, the utility model is described further.
Ball screw assembly, abrasion amount measuring testing table of the present utility model comprises base plate 1, two of each band one slide block 3 is set in parallel in the guide rail 2 of both side ends above base plate 1,, the slide plate 4 that be fixedly installed in two slide blocks 3 on vertical with guide rail 2, described slide plate 4 offers a mounting hole, ball screw assembly, is through mounting hole, leading screw nut 10 is fixedly connected with mounting hole, and lead screw shaft 9 is parallel with guide rail 2; Described lead screw shaft 9 one end is connected with shaft coupling 6 through bearing seat 7, and shaft coupling 6 other end connects servomotor 5; Described servomotor 5 is arranged in motor fixing seat 15, the downside connecting bottom board 1 of described motor fixing seat 15.Described servomotor 5 side is provided with the direction of motion constant force output device consistent with ball screw assembly, 13; Displacement transducer 11 is provided with bottom described slide plate 4.
Be provided with the displacement transducer guide plate 12 be slidably connected with displacement transducer 11 below described slide plate 4, institute's displacement sensors guide plate 12 is parallel with guide rail 2.Backing plate 1 is placed on below bearing seat 7.Cushion block 2 14 is below constant force output device 13.Its supporting role.
Servomotor, displacement transducer, constant force output device are as comparatively general in: RCP2-RA10C-I-86P-2.5-50-P2-P-B model electricity cylinder, carry the function measuring electric cylinder push rod shift length, can release at the push rod of electric cylinder and while being pressed on slide plate with constant force, measure push rod shift value.Their structure is comparatively common, and therefore its inner structure and annexation do not elaborate.
This test experimental bed is adopted to carry out the operation steps of testing:
Step one, first, drives shaft coupling to rotate by servomotor, and shaft coupling drives lead screw shaft to rotate, and the slide plate that lead screw shaft rotary actuation is enclosed within leading screw nut moves, and slide plate is run to initial position; Described initial position is by the presetting fixed position in the push rod telescopic extensions of constant force output device of displacement transducer;
The push rod of step 2, constant force output device is released and is pressed on slide plate with constant force, records initial push rod shift value A, and regains push rod;
Step 3, control slide plate stop at initial position after 10h runs repeatedly;
Step 4, again released by the push rod of constant force output device and be pressed on slide plate with constant force, record current push rod shift value B, the absolute value of two numerical value A and B difference is current ball screw assembly, wear extent.
Further, after step one and step 2 terminate, according to step 3 and step 4 repetition test, the push rod shift value of survey record different times (20h, 50h, 100h, 200h), and compare with initial push rod shift value A, the ball screw assembly, wear extent of survey record different times.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. a ball screw assembly, wear measurement testing table, it is characterized in that: comprise base plate (1), two of each band one slide block (3) is set in parallel in the guide rail (2) of base plate (1) top both side ends,, the slide plate (4) that be fixedly installed in two slide blocks (3) on vertical with guide rail (2), described slide plate (4) offers a mounting hole, ball screw assembly, is through mounting hole, leading screw nut (10) is fixedly connected with mounting hole, and lead screw shaft (9) is parallel with guide rail (2); Described lead screw shaft (9) one end is connected with shaft coupling (6) through bearing seat (7), and shaft coupling (6) other end connects servomotor (5); Described servomotor (5) side is provided with the direction of motion constant force output device consistent with ball screw assembly, (13); Described slide plate (4) bottom is provided with displacement transducer (11).
2. a kind of ball screw assembly, wear measurement testing table according to claim 1, it is characterized in that: described constant force output device (13) bottom is provided with cushion block two (14), described bearing seat (7) bottom is provided with cushion block one (8).
3. a kind of ball screw assembly, wear measurement testing table according to claim 1, it is characterized in that: described slide plate (4) below is provided with the displacement transducer guide plate (12) be slidably connected with displacement transducer (11), and institute's displacement sensors guide plate (12) is parallel with guide rail (2).
4. a kind of ball screw assembly, wear measurement testing table according to claim 1, is characterized in that: described constant force output device (13) is RCP2-RA10C-I-86P-2.5-50-P2-P-B model electricity cylinder.
CN201520208079.7U 2015-04-08 2015-04-08 A kind of ball screw assembly, wear measurement testing table Expired - Fee Related CN204556253U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520208079.7U CN204556253U (en) 2015-04-08 2015-04-08 A kind of ball screw assembly, wear measurement testing table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520208079.7U CN204556253U (en) 2015-04-08 2015-04-08 A kind of ball screw assembly, wear measurement testing table

Publications (1)

Publication Number Publication Date
CN204556253U true CN204556253U (en) 2015-08-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792640A (en) * 2015-04-08 2015-07-22 东南大学 Wear measurement test bed for ball screw pair
CN107831010A (en) * 2017-10-11 2018-03-23 北京精密机电控制设备研究所 A kind of electromechanical actuator ball-screw fault monitoring system
CN108871744A (en) * 2018-05-10 2018-11-23 东南大学 A kind of multi-state line slideway auxiliary friction wear testing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792640A (en) * 2015-04-08 2015-07-22 东南大学 Wear measurement test bed for ball screw pair
CN107831010A (en) * 2017-10-11 2018-03-23 北京精密机电控制设备研究所 A kind of electromechanical actuator ball-screw fault monitoring system
CN108871744A (en) * 2018-05-10 2018-11-23 东南大学 A kind of multi-state line slideway auxiliary friction wear testing machine

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150812

Termination date: 20200408