CN201322877Y - Performance testing device of precise servo linear drive system - Google Patents
Performance testing device of precise servo linear drive system Download PDFInfo
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- CN201322877Y CN201322877Y CNU2008202038361U CN200820203836U CN201322877Y CN 201322877 Y CN201322877 Y CN 201322877Y CN U2008202038361 U CNU2008202038361 U CN U2008202038361U CN 200820203836 U CN200820203836 U CN 200820203836U CN 201322877 Y CN201322877 Y CN 201322877Y
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Abstract
The utility model discloses a performance testing device of precise servo linear drive system, comprising bed legs and a bed body supported by the bed legs, wherein a main screw mandrel guide way pair and an auxiliary screw mandrel guide way pair are arranged on the bed body, and a main servo-actuator and an auxiliary servo-actuator are respectively connected to the screw mandrels of the main screw mandrel guide way pair and the auxiliary screw mandrel guide way pair through a shaft coupling, and a work table and an auxiliary work table are respectively arranged at two sides of the bed body, and screw mandrel nuts in the main screw mandrel guide way pair and the auxiliary screw mandrel guide way pair are fastened below the work table and the auxiliary work table, and load with various mass can be placed on the work table, and a rotor of the first displacement grating ruler is fastened to the work table, and a rotor of the second displacement grating ruler is fastened to the auxiliary work table, and the signal output terminals of a first linear displacement grating ruler and a second linear displacement grating ruler are connected to a controller of the testing device, and the first linear displacement grating ruler and the second linear displacement grating ruler respectively form a loop precise servo drive system with a main drive unit and an auxiliary drive unit respectively. The utility model can simulate various working conditions to perform drive performance test and parameter measurement of precise servo rotating machine and control unit thereof, and perform technique evaluation for each constituent link of the system under various predetermined conditions.
Description
Technical field
The utility model is a kind of elaborate servo linear drive system performance test unit, be particularly related to a kind of linearity (straight line) the feed system duty that can simulate high-grade, digitally controlled machine tools, bearing under the situations such as various operating loads, working resistance, speed, acceleration, the driveability test and the parameter measurement of elaborate servo electric rotating machine and control module thereof can be carried out, even the test unit of technical feature and serviceability index evaluation can be carried out related components, some key structure.
Background technology
As the numerically-controlled machine forward of equipment manufacture core at a high speed, efficient, high precision, intellectuality, compoundization, environmental protection direction develop.The servo drive system of numerically-controlled machine generally is made up of driving control unit, driver element, mechanical transmission unit, executive component and detection feedback element etc.In the middle of various numerical controlled machinery equipments, except some superfast occasion is used the AC linear motor, still a large amount of the employing by electric rotating machine drives the ball-screw rotation, does straight-line servo driving mode by execution members such as ball nut drive worktable then.
Carry out in the servo drive system design typification process, definite principle of each component units is different.Indexs such as executive component and detection feedback element such as precision, speed, acceleration are independent variable in design selection by the function decision of work.The type selecting of mechanical transmission unit depends on the serviceability requirement of the servo driving of numerically-controlled machine, but the performance adaptive domain degree of mechanical transmission units such as general ball guide screw nat is very wide, and it is enough substantially therefore only ball guide screw nat to be carried out the exercise performance examination.Because the action of numerically-controlled machine by driven by servomotor, therefore must design and type selecting according to the high request of numerically-controlled machine to servomotor and the proposition of servo driving control module thereof.Numerically-controlled machine is as follows to the performance requirement of servo linear drive system:
1. precision height.For positional precision and the contour machining precision that guarantees moving-member, require to have enough precision, and when load or working resistance variation, strong antijamming capability is arranged, can accurate, the constant airspeed in holding position.
2. response is fast.Response is the dynamic property of servo-drive system fast, has reflected the tracking accuracy of system, requires overshoot little.The interpolation time of numerically-controlled machine all below 20ms, in so short instruction transformation period, requires the rapid acceleration and deceleration of servomotor at present.
3. speed-regulating range width.At present to require the speed adjustable range of feed servo system generally be 0-40m/min to numerically-controlled machine, and what have reaches 240m/min.Except ball guide screw nat and speed reduction unit play the deceleration chronotropic action, servomotor will have wideer speed adjustable range.
4. big torque.During the lathe high speed feed, can drive necessary load and realize quickening to start, can suddenly fast stop before shutting down.During the lathe slow cutting, the cutting-in and the amount of feeding are all bigger, and the resistance that is subjected to is very big.Modern numerically-controlled machine much adopts servomotor and ball-screw shaft coupling direct connection, and this just requires the feeding motor can export enough big torque.
5. servo stiffness height.Servo stiffness is meant whole servo-drive system, under the effect that is subjected to external applied loads such as moment of torsion, moment of flexure, cutting force, inertial force, does not produce the ability of position deviation in the direction of regulation, includes static servo stiffness and dynamic servo rigidity.
6. inertia mates.Moving-member quickens and bigger inertia is all arranged when slowing down owing to require the fast-response of system can be good, thereby the inertia of motor will with the inertia coupling of moving-member, require the inertia of drive motor to be not less than the inertia sum of all moving components usually.
7. anti-overload ability is strong.Owing to require to have very fast response speed during the motor acceleration and deceleration, at this moment motor may be worked under the condition of overload, therefore requires motor that very strong anti-overload ability is arranged.Usually the 4-6 that requires to transship in several minutes does not doubly damage yet.
Along with the development of modern numerically-controlled machine, in order to realize the working ability of high-accuracy high-efficiency rate, require the servo drive system reaction fast on the one hand, setup time is shortened in start and stop quick and precisely; Also require motion process steady on the other hand, impact for a short time, when high-speed cruising, can realize level and smooth control, to prevent to produce the shock and vibration in the high-speed cruising.For another example in the crossbeam mobile model high-speed numeric control milling machine of gantry,, must adopt bilateral synchro system to drive when gantry span during greater than 2m.For main shaft and the heavy lathe of main spindle box, bilateral synchronous follow-up drive system adopts the control of master-slave mode intersection feedback principle, generally should make bilateral tracking error less than 0.01mm.Therefore carry out bilateral synchronized drive technology test important realistic meaning is arranged equally.
At present, China's servo drive system industry does not also have the special driving performance test apparatus, can't set up industry standard, is difficult to form the performance expression and the evaluation method of the autonomous servo-drive system of China (containing main shaft) product.
The utility model content
The purpose of this utility model is to consider the problems referred to above and provides a kind of and can the serviceability of drive system be detected, can verify the elaborate servo linear drive system performance test unit that each factor exerts an influence to the system synthesis technical feature by single factor method test.The utility model helps to promote the foundation of industry standard, and the performance that helps to form the servo-drive system product is expressed and evaluation method.
The technical solution of the utility model is: include cabinet base and be bearing in lathe bed on the cabinet base, main screw mandrel guideway and paranema rod guide pair are installed on its medial bed, main servo motor and secondary servomotor are installed in respectively on main servo motor mount and the secondary servomotor mount pad, and be connected by the screw mandrel of shaft coupling respectively with main screw mandrel guideway and paranema rod guide pair, worktable and subtask platform are installed in the both sides of lathe bed respectively, drive the main screw mandrel guideway of worktable and subtask platform motion and the feed screw nut in the paranema rod guide pair be fixed tightly in worktable and subtask platform below, can lay the load of various quality sizes on the worktable, mover and worktable as the first linear displacement grating chi of position feedback transducer tighten up, mover and subtask platform as the second linear displacement grating chi of position feedback transducer tighten up, the signal output part of the first linear displacement grating chi and the second linear displacement grating chi is connected with the controller of test unit, and the first linear displacement grating chi and the second linear displacement grating chi are formed full cut-off ring elaborate servo drive system respectively with above-mentioned main driver element and secondary driver element.
Between above-mentioned main servo motor and secondary servomotor and the shaft coupling and between shaft coupling and the screw mandrel and between screw mandrel and the feed screw nut all through the elimination interstitial treatment.
On the above-mentioned subtask platform analog main shaft is installed, can installs on the analog main shaft and be convenient to do the measuring basis that positional precision is measured.
Above-mentioned subtask platform can connect with stationary table, can unite driving, or throws off connection with worktable, distinguishes drive controlling.
The above-mentioned first linear displacement grating chi and the second linear displacement grating chi are accurate linear displacement grating chi.
The above-mentioned resistance gauge that is fixed for the simulation cutting resistance at an end of testing table lathe bed.
Above-mentioned resistance gauge is the hydraulic coupling device, or the atmospheric pressure device.
Above-mentioned resistance gauge is made up of cylinder barrel and piston, and the oil-in of cylinder barrel is connected with oil pump by retaining valve, and is connected with pressure adjusting pressuring valve and tensimeter between the oil-in of cylinder barrel and the retaining valve.
By the utility model device, can carry out the driveability test and the parameter measurement of elaborate servo electric rotating machine and control module thereof, and down the link of respectively forming of system be carried out the technical feature evaluation various imposing a condition.The utility model is that a kind of design is ingenious, function admirable, convenient and practical elaborate servo linear drive system performance test unit.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model resistance gauge.
Embodiment
Embodiment:
Structural representation of the present utility model such as Fig. 1, shown in 2, include cabinet base 12 and be bearing in lathe bed 1 on the cabinet base 12, main screw mandrel guideway 5 and paranema rod guide pair 9 are installed on its medial bed 1, main servo motor 8 and secondary servomotor 8A are installed in respectively on main servo motor mount 7 and the secondary servomotor mount pad 7A, and be connected by the screw mandrel of shaft coupling respectively with main screw mandrel guideway 5 and paranema rod guide pair 9, worktable 3 and subtask platform 10 are installed in the both sides of lathe bed 1 respectively, drive the main screw mandrel guideway 5 of worktable 3 and 10 motions of subtask platform and the feed screw nut in the paranema rod guide pair 9 be fixed tightly in worktable 3 and subtask platform 10 below, can lay the load 4 of various quality sizes on the worktable 3, mover and worktable 3 as the first linear displacement grating chi 6 of position feedback transducer tighten up, mover and subtask platform 10 as the second linear displacement grating chi 6A of position feedback transducer tighten up, the signal output part of the first linear displacement grating chi 6 and the second linear displacement grating chi 6A is connected with the controller of test unit, and the first linear displacement grating chi 6 and the second linear displacement grating chi 6A form full cut-off ring elaborate servo drive system respectively with above-mentioned main driver element and secondary driver element.Select the screw mandrel guideway that possesses enough mechanical rigids for use according to the size that may produce impulsive force during type selecting, precision grade and results precision adapt.Lathe bed 1 will have enough rigidity, flexing resistance and absorbing; Main screw mandrel guideway 5, paranema rod guide pair 9 will possess enough mechanical rigids, can lay the load 4 of various quality sizes on the worktable 3, simulate the workpiece that will drive with this, the servomotor mount pad can be convenient for changing as mechanical interface, thereby different tested motors are installed.
Between above-mentioned main servo motor (8) and secondary servomotor (8A) and the shaft coupling and between shaft coupling and the screw mandrel and between screw mandrel and the feed screw nut all through the elimination interstitial treatment.
The controller of above-mentioned test unit is a digitial controller.
In the present embodiment, on the above-mentioned subtask platform 10 analog main shaft 11 is installed also, can installs on the analog main shaft 11 and be convenient to do the measuring basis that positional precision is measured.Above-mentioned subtask platform 10 can with worktable 3 fixed connections, unite and drive test, or throw off with worktable 3 and to connect, by main servo drive system and secondary servo drive unit system drive controlling respectively, carry out the driven in synchronism test.On analog main shaft, install and measure benchmark easily, be convenient to do positional precision and measure; Because in being similar to gantry crossbeam mobile model high-speed numeric control milling machine,, must adopt bilateral synchro system to drive when gantry span during greater than 2m.For main shaft and the heavy lathe of main spindle box, bilateral synchro system adopts master-slave mode intersection feedback principle to control, and the general tracking error of controlling requires less than 0.01mm.
In the present embodiment, the above-mentioned first linear displacement grating chi 6 and the second linear displacement grating chi 6A are accurate linear displacement grating chi.
An above-mentioned end at testing table lathe bed 1 is fixed for the resistance gauge 2 of simulation cutting resistance.Above-mentioned resistance gauge 2 is the hydraulic coupling device, or the atmospheric pressure device.In the present embodiment, above-mentioned resistance gauge 2 is made up of cylinder barrel and piston, and the oil-in of cylinder barrel is connected with oil pump 16 by retaining valve 14, and is connected with pressure adjusting pressuring valve 15 and tensimeter 13 between the oil-in of cylinder barrel and the retaining valve 14.Preestablish the size of pressure by pressure adjusting pressuring valve 15, thereby regulate the size that is applied to resistance on the worktable.
The test method of the utility model elaborate servo linear drive system performance test unit, it can carry out following experiment:
1) on worktable, lays the structure of the load of various quality sizes, the workpiece that simulation will drive, speed and acceleration with various settings drives worktable then, bearing accuracy and running precision by accurate surveying work platform, the performance of evaluation servo-drive system is carried out the driveability test and the parameter testing of servo electric rotating machine and control module thereof;
2) down the link of respectively forming of system is carried out technical evaluation various imposing a condition, it is specially: under the constant situation of the driving control unit in the servo drive system, mechanical transmission unit, executive component and detection feedback element, change different tested servomotors, thereby evaluation servomotor technical target of the product provides performance to express and the evaluation method foundation.
3) on the basis of above-mentioned pilot project, the utility model elaborate servo linear drive system performance test unit can carry out following experiment by resistance gauge:
1. worktable 3 promotes resistance gauge piston, testing platform feed accuracy with work feed speed;
2. worktable is forced in worktable by servo locked motionless by the resistance gauge piston, detects the servo-drive system rigidity;
3. the resistance gauge piston applies the maximum force of energy push work platform, detects the maximum thrust output of servo-drive system.
By the utility model device and above-mentioned test method, can carry out the driveability test and the parameter measurement of elaborate servo electric rotating machine and control module thereof, and down the link of respectively forming of system be carried out technical evaluation various imposing a condition.For example, under the constant situation such as the driving control unit in the servo drive system, mechanical transmission unit, executive component and detection feedback element, and change different tested servomotors, thereby evaluation servomotor technical target of the product provides performance to express and the evaluation method foundation.
Claims (8)
1, a kind of elaborate servo linear drive system performance test unit, include cabinet base (12) and be bearing in lathe bed (1) on the cabinet base (12), it is characterized in that being equipped with on the lathe bed (1) main screw mandrel guideway (5) and paranema rod guide pair (9), main servo motor (8) and secondary servomotor (8A) are installed in respectively on main servo motor mount (7) and the secondary servomotor mount pad (7A), and be connected by the screw mandrel of shaft coupling respectively with main screw mandrel guideway (5) and paranema rod guide pair (9), worktable (3) and subtask platform (10) are installed in the both sides of lathe bed (1) respectively, drive the main screw mandrel guideway (5) of worktable (3) and subtask platform (10) motion and the feed screw nut in the paranema rod guide pair (9) be fixed tightly in worktable (3) and subtask platform (10) below, can lay the load (4) of various quality sizes on the worktable (3), mover and worktable (3) as the first linear displacement grating chi (6) of position feedback transducer tighten up, mover and subtask platform (10) as the second linear displacement grating chi (6A) of position feedback transducer tighten up, the signal output part of the first linear displacement grating chi (6) and the second linear displacement grating chi (6A) is connected with the controller of test unit, and the first linear displacement grating chi (6) and the second linear displacement grating chi (6A) are formed full cut-off ring elaborate servo drive system respectively with above-mentioned main driver element and secondary driver element.
2, elaborate servo linear drive system performance test unit according to claim 1, it is characterized in that between above-mentioned main servo motor (8) and secondary servomotor (8A) and the shaft coupling and shaft coupling and screw mandrel between and between screw mandrel and the feed screw nut all through the elimination interstitial treatment.
3, elaborate servo linear drive system performance test unit according to claim 1 is characterized in that being equipped with on the above-mentioned subtask platform (10) analog main shaft (11), and analog main shaft (11) is gone up to install and is convenient to do the measuring basis that positional precision is measured.
4, elaborate servo linear drive system performance test unit according to claim 3, it is characterized in that above-mentioned subtask platform (10) can with worktable (3) fixed connection, can unite driving, or throw off connection, distinguish drive controlling with worktable (3).
5, elaborate servo linear drive system performance test unit according to claim 1 is characterized in that the above-mentioned first linear displacement grating chi (6) and the second linear displacement grating chi (6A) are accurate linear displacement grating chi.
6,, it is characterized in that an above-mentioned end at testing table lathe bed (1) is fixed for the resistance gauge (2) of simulation cutting resistance according to each described elaborate servo linear drive system performance test unit of claim 1 to 5.
7, elaborate servo linear drive system performance test unit according to claim 6 is characterized in that above-mentioned resistance gauge (2) is the hydraulic coupling device, or the atmospheric pressure device.
8, elaborate servo linear drive system performance test unit according to claim 7, it is characterized in that above-mentioned resistance gauge (2) is made up of cylinder barrel and piston (17), the oil-in of cylinder barrel is connected with oil pump (16) by retaining valve (14), and is connected with pressure adjusting pressuring valve (15) and tensimeter (13) between the oil-in of cylinder barrel and the retaining valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202038361U CN201322877Y (en) | 2008-11-21 | 2008-11-21 | Performance testing device of precise servo linear drive system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008202038361U CN201322877Y (en) | 2008-11-21 | 2008-11-21 | Performance testing device of precise servo linear drive system |
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| CN201322877Y true CN201322877Y (en) | 2009-10-07 |
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| CNU2008202038361U Expired - Fee Related CN201322877Y (en) | 2008-11-21 | 2008-11-21 | Performance testing device of precise servo linear drive system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262905A (en) * | 2011-04-21 | 2011-11-30 | 中国科学院光电技术研究所 | Clearance-eliminating precision guide displacement device |
| CN109708577A (en) * | 2019-01-04 | 2019-05-03 | 永发（江苏）模塑包装科技有限公司 | A kind of molding equipment of paper pulp moulding product automatically resets calibrating installation |
-
2008
- 2008-11-21 CN CNU2008202038361U patent/CN201322877Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262905A (en) * | 2011-04-21 | 2011-11-30 | 中国科学院光电技术研究所 | Clearance-eliminating precision guide displacement device |
| CN102262905B (en) * | 2011-04-21 | 2012-09-19 | 中国科学院光电技术研究所 | Clearance-eliminating precision guide displacement device |
| CN109708577A (en) * | 2019-01-04 | 2019-05-03 | 永发（江苏）模塑包装科技有限公司 | A kind of molding equipment of paper pulp moulding product automatically resets calibrating installation |
| CN109708577B (en) * | 2019-01-04 | 2021-12-21 | 永发（江苏）模塑包装科技有限公司 | Automatic resetting and calibrating device for forming equipment of pulp molding product |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20091007 Termination date: 20111121 |