CN202305208U - Loading running-in device of ball screw assembly - Google Patents
Loading running-in device of ball screw assembly Download PDFInfo
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- CN202305208U CN202305208U CN2011203694548U CN201120369454U CN202305208U CN 202305208 U CN202305208 U CN 202305208U CN 2011203694548 U CN2011203694548 U CN 2011203694548U CN 201120369454 U CN201120369454 U CN 201120369454U CN 202305208 U CN202305208 U CN 202305208U
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- ball screw
- screw assembly
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- limit switch
- magnetic powder
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Abstract
The utility model discloses a loading running-in device of a ball screw assembly, which belongs to the field of a running-in device of the ball screw assembly. A spindle box and a tail seat are used for fixing the ball screw assembly, a location plate is used for being fixedly connected with a ball nut of the ball screw assembly, a limit switch and a limit switch trigger rod achieve automatic reverse running-in of the ball screw assembly, a magnetic powder brake is used for exerting axial load on the ball screw assembly, a reverse mechanism controls positive and negative rotation of the top, and a control cabinet controls other devices. The magnetic powder brake is used for exerting the axial load on the ball screw assembly, so that leave-factory performance of the ball screw assembly is improved, control of loading load is accurate, and temperature rise of the ball screw assembly after running-in can be conveniently and accurately measured.
Description
Technical field
The utility model relates to a kind of test unit of ball screw assembly,, more particularly, relates to a kind of ball screw assembly, loading running in machine that applies axial load through magnetic powder brake.
Background technology
Running-in is one of operation of ball screw assembly, production, all need carry out running-in before every suit ball screw assembly, dispatches from the factory, to improve its performance.Ball screw assembly, running-in in the past all is under the situation of zero load, to carry out; Under this situation; Can't learn the temperature rise of ball screw assembly, after the running-in; The ball-recirculation reversing device whether firmly, come off, whether O-ring seal firm, whether distortion and dislocation and the dynamic unloaded pretension torque of ball screw assembly, still meet situation such as drawing requirement.
One Chinese patent application number is 91220060.X; Invention and created name is: ball screw assembly, running-in and fatigue tester; This application case is made up of Hydraulic Station, controller, reverse mechanism, oil motor, charger, leading screw, nut, and oil motor is connected with leading screw, reverse mechanism respectively, and controller is connected with Hydraulic Station, reverse mechanism, charger respectively; Charger is a fluid pressure type oil cylinder with two oil pockets; Constitute by cylinder body, piston, gland bonnet, be arranged on the leading screw, and between two nuts on the ball screw assembly.This application case is converted into the internal force of system with plus load, makes and bears an axial load between nut and leading screw, just bears pulling force on one section leading screw between two nuts; When rotational lead screw, nut are done to move again, there is the alternation contact stress on nut and the leading screw raceway; Realized the life-span of the life-span of testing machine greater than ball screw assembly; But guaranteed the completion of test one-time continuous, but the deficiency that this application case exists is: the fluid pressure type cylinder structure is complicated, and the frequent back and forth movement of oil cylinder; Easy abrasion causes leakage of oil and influences the operate as normal of equipment.
At present, a lot of ball screw assembly, general performance tests, its ball screw assembly, running-in all is under the situation of zero load, to carry out.As: Chinese patent ZL200620161148.4; Invention and created name is: high speed and precision ball screw assembly, general performance test; This application case has a base, and at base rear end and anterior front-end bearing pedestal and the rear bearing block that is provided for supporting ball screw assembly, respectively, the base front end is equipped with waits upon the clothes motor; Wait upon on the output shaft of obeying motor the shaft coupling that is connected with ball-screw is housed; There is base-mounted line slideway the both sides of front-end bearing pedestal, rear bearing block, and two line slideways are parallel with the center line of front-end bearing pedestal, rear bearing block, and two line slideways support the worktable that is connected with ball-screw nut.This tester cooperates acceleration transducer, temperature sensor, Digital Noise sensor grating chi and double-frequency laser to survey people's device and computing machine; Can accomplish the online in real time of acceleration, speed, bearing accuracy and the leading screw thermal elongation of ball screw assembly, under load condition measures; Promoted the ball screw assembly, detection means; But this tester does not apply axial load to ball screw assembly, as yet, promptly tests under the situation of zero load; Can not simulate ball screw assembly, in actual use receive force environment, so data measured can not embody the performance of ball screw assembly, exactly.
Summary of the invention
The technical matters that utility model will solve
The deficiency that the utility model moves under the situation of zero load to ball screw assembly, running-in appearance of the prior art; Provide a kind of ball screw assembly, to load running in machine; Apply axial load to ball screw assembly, during running-in; To improve the performance of ball screw assembly,, also can conveniently record the temperature rise of ball screw assembly, after the running-in, convenient test ball-recirculation reversing device whether firmly, come off; Whether O-ring seal firm, distortion and dislocation, and whether the dynamic unloaded pretension torque of ball screw assembly, still meets situation such as drawing requirement.
Technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of ball screw assembly, of the utility model loads running in machine, comprises main spindle box, location-plate, planker, guide rail, tailstock and lathe bed, also comprises limit switch, reverse mechanism, magnetic powder brake and switch board, wherein,
ⅰ, main spindle box are fixed on an end of lathe bed, and tailstock is slidingly installed on the lathe bed and the corresponding other end in main spindle box position, and this tailstock can move on the length direction of lathe bed, and the top of main spindle box and tailstock is positioned on the same horizontal line, is used for fixing ball screw assembly;
ⅱ, planker are socketed on the guide rail, can slide at the axial direction of guide rail, and location-plate is connected with planker mutually, and this location-plate is positioned at the top of planker, and location-plate is provided with the U-shaped groove, is used for being connected mutually with the ball nut of ball screw assembly;
ⅲ, limit switch are installed in lathe bed one side through screw retention; Limit switch is provided with 2; Side near limit switch on the planker is fixed with the limit switch frizzen, through contacting of limit switch frizzen and limit switch, realizes the automatic reverse running-in of ball screw assembly;
ⅳ, magnetic powder brake are positioned at lathe bed one side; This magnetic powder brake is connected with planker mutually, and the output shaft of magnetic powder brake is meshed with spur rack, and this spur rack is fixed on the lathe bed; With axially paralleling of guide rail, magnetic powder brake is used for applying axial load to ball screw assembly;
ⅴ, the logical enough belts of reverse mechanism are connected with the belt wheel of main spindle box, the top rotation in the driving main shaft case, thus control top positive and negative rotation;
ⅵ, switch board are provided with guidance panel, and switch board is connected with other device that loads running in machine, controls other device work.
More specifically, described main spindle box is provided with chuck, through the fixing ball-screw of this chuck.The both sides of U-shaped groove are provided with threaded hole on the described location-plate, realize being fixedly connected of location-plate and ball nut through threaded hole.
Principle of work: ball screw assembly, after assembling is accomplished, measure unloaded pretension torque before, must carry out running-in, through running-in, check the quality of assembling.In lathe uses, receive force environment in order to reach ball screw assembly,, this running-in appearance has increased the device magnetic powder brake that applies axial load to ball screw assembly.During actual the use; Ball screw assembly, is contained between main spindle box and tailstock top through the two ends center pit, is fixed up ball-screw with chuck, prevent that it from rotating at circumferencial direction at the main spindle box end; Ball nut is fixed on the location-plate; According to client's demand, ball screw assembly, is applied certain axial load, come and go the running-in official hour with certain rotating speed.
Beneficial effect
The technical scheme that adopts the utility model to provide is compared with existing known technology, has following remarkable result:
(1) ball screw assembly, of the utility model loads running in machine has increased the magnetic powder brake that applies axial load to ball screw assembly; Can reach ball screw assembly, and in lathe uses, receive force environment; Improve the effect of running-in greatly, can improve the performance of dispatching from the factory of ball screw assembly;
(2) magnetic powder brake of the utility model employing loads axial load, and load with hydraulic cylinder and compare, the environmental pollution situation such as little, no leakage of oil that take up room, and the control of the size of loaded load is accurately;
(3) the loading running in machine of the utility model is provided with limit switch, is used reverse mechanism, realizes control automatically through switch board, and the automaticity of running-in operation is high, and labour intensity reduces greatly, has reduced production cost.
Description of drawings
Fig. 1 is the synoptic diagram that a kind of ball screw assembly, of the utility model loads the running in machine front view;
The structural representation that Fig. 2 analyses and observe for the A-A direction of the utility model.
Label declaration in the synoptic diagram:
The 1-main spindle box; The 2-limit switch; The 3-location-plate; The 4-planker; The 5-guide rail; The 6-tailstock; The 7-lathe bed; The 8-reverse mechanism; The 9-magnetic powder brake; The 10-switch board.
Embodiment
For further understanding the content of the utility model, the utility model is described in detail in conjunction with accompanying drawing.
In conjunction with Fig. 1 and Fig. 2, the utility model comprises main spindle box 1, limit switch 2, location-plate 3, planker 4, guide rail 5, tailstock 6, lathe bed 7, reverse mechanism 8, magnetic powder brake 9 and switch board 10, and main spindle box 1 is fixed on an end of lathe bed 7; Tailstock 6 is slidingly installed on the lathe bed 7 and the corresponding other end in main spindle box 1 position, and main spindle box 1 is positioned on the same horizontal line with the top of tailstock 6, is used for fixing ball screw assembly; Planker 4 is socketed on the guide rail 5, and location-plate 3 is connected with planker 4 mutually, and location-plate 3 is provided with the U-shaped groove; Be used for being connected mutually with the ball nut of ball screw assembly,, limit switch 2 is installed in lathe bed 7 one sides through screw retention, and limit switch 2 is provided with 2; Side near limit switch 2 on the planker 4 is fixed with the limit switch frizzen, through contacting of limit switch frizzen and limit switch 2, realizes the automatic reverse running-in of ball screw assembly; Magnetic powder brake 9 is connected with planker 4 mutually, and the output shaft of magnetic powder brake 9 is meshed with spur rack, and this spur rack is fixed on the lathe bed 7; With axially paralleling of guide rail 5; Magnetic powder brake 9 is used for applying axial load to ball screw assembly,, and reverse mechanism 8 logical enough belts are connected the top rotation in the driving main shaft case 1 with the belt wheel of main spindle box 1; Thereby control top positive and negative rotation; Switch board 10 is provided with guidance panel, and switch board 10 is connected with other device that loads running in machine, controls other device work.
Below in conjunction with embodiment the utility model is done further to describe.
Embodiment
The ball screw assembly, of present embodiment loads running in machine, and in an end of lathe bed 7, tailstock 6 is slidingly installed on the slide rail of lathe bed 7 main spindle box 1 through bolt; Main spindle box 1 and tailstock 6 lay respectively at the two ends of lathe bed 7, and this tailstock 6 can move on the slide rail of lathe bed 7, and main spindle box 1 is positioned on the same horizontal line with the top of tailstock 6; Ball screw assembly,, is strengthened fixing through the chuck on the main spindle box 1 between main spindle box and tailstock top through two ends center pit clamping, and planker 4 is socketed on the guide rail 5; Can slide at the axial direction of guide rail 5, on planker 4, this location-plate 3 is positioned at the top of planker 4 to location-plate 3 through screw retention; Location-plate 3 is provided with the U-shaped groove, and the both sides of this U-shaped groove are provided with threaded hole, realizes being fixedly connected of location-plate 3 and ball nut through threaded hole; Limit switch 2 is installed in lathe bed 7 one sides through screw retention, and limit switch 2 is provided with 2, and the side near limit switch 2 on the planker 4 is fixed with the limit switch frizzen; Through contacting of limit switch frizzen and limit switch 2, realize the automatic reverse running-in of ball screw assembly,, magnetic powder brake 9 is positioned at lathe bed 7 one sides; This magnetic powder brake 9 is connected with planker 4 mutually, and the output shaft of magnetic powder brake 9 is meshed with spur rack, and this spur rack is fixed on the lathe bed 7; With axially paralleling of guide rail 5, magnetic powder brake 9 is used for applying axial load to ball screw assembly,, and reverse mechanism 8 logical enough belts are connected with the belt wheel of main spindle box 1; Top rotation in the driving main shaft case 1, this reverse mechanism 8 commutates through electrical control, thereby controls top positive and negative rotation; Switch board 10 is provided with guidance panel, and switch board 10 is connected with other device that loads running in machine, controls other device work.
Select for use an interior circulating ball lead screw pair of being furnished with O-ring seal to carry out the running-in experiment in the present embodiment, concrete running-in experimentation is following:
(A) load ball screw assembly: ball screw assembly, be fixed on load on top between running in machine main spindle box 1 and the tailstock 6, leaning on main spindle box 1 end with the fixing ball-screw of chuck simultaneously, prevent ball-screw and top between relatively rotate;
(B) fixing ball nut: the ball nut on the ball screw assembly, is fixed in the U-shaped groove of location-plate 3 through being threaded, when making the ball-screw rotation, ball nut does not rotate together along with ball-screw and does rectilinear motion;
(C) running-in operation: the axial force that magnetic powder brake 9 applies during running-in is identical with the pretightning force of ball screw assembly; The present embodiment pretightning force requires to be 4Kg; The magnitude of load of setting magnetic powder brake 9 through the guidance panel on the switch board 10 is 4 Kg; Rotating speed is 150 r/min during running-in, and requirement of accuracy class of circulating ball lead screw pair is 2 grades in this, and reciprocal running-in number of times is set at 60 times in the effective travel;
When the utility model is applied to other ball screw assembly, running-in; Reciprocal running-in number of times can be selected to set according to accuracy class in the concrete effective travel: when precision is 1,2 grades; Reciprocal running-in number of times >=50 in the effective travel, when precision is 3,4 grades, reciprocal running-in number of times >=40 in the effective travel; When precision is 5,7,10 grades, reciprocal running-in number of times >=30 in the effective travel;
(D) shut-down sequence: after treating the running-in number of times end of step (C) setting, close the control power supply of magnetic powder brake 9 earlier, close the power supply that loads running in machine again;
(E) performance parameter test: performance parameter test comprises: accomplish the temperature rise test of ball nut after 1. running is stopped in half a minute, promptly cooperate survey 2 points on the cylindrical at nut, get its temperature rise maximal value, present embodiment is measured as 6 ℃; 2. recheck dynamic unloaded pretension torque, its limit deviation value should meet the requirement of drawing; 3. the ball-recirculation reversing device should be firm, do not allow to become flexible, misplace, come off or exceed the distortion of requirement; 4. O-ring seal should firm, not allow distortion and dislocation;
(F) unloading ball screw assembly: unclamp being threaded of location-plate 3 and ball nut, through driving ball screw assembly, is allocated and transported and left the loading running in machine.
Present embodiment has increased the magnetic powder brake that applies axial load to ball screw assembly; Can reach ball screw assembly, and in lathe uses, receive force environment; Improved the effect of running-in greatly, can improve the performance of dispatching from the factory of ball screw assembly,, and the automaticity of running-in operation is high; Labour intensity reduces greatly, has reduced production cost.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in the accompanying drawing also is one of embodiment of the utility model, and practical structure is not limited thereto.So,, under the situation that does not break away from the utility model creation aim,, all should belong to the protection domain of the utility model without creationary frame mode similar and the embodiment of designing with this technical scheme if those of ordinary skill in the art is enlightened by it.
Claims (3)
1. a ball screw assembly, loads running in machine; Comprise main spindle box (1), location-plate (3), planker (4), guide rail (5), tailstock (6) and lathe bed (7); It is characterized in that; Also comprise limit switch (2), reverse mechanism (8), magnetic powder brake (9) and switch board (10), wherein
ⅰ, main spindle box (1) are fixed on an end of lathe bed (7); Tailstock (6) is slidingly installed in lathe bed (7) and goes up and the corresponding other end in main spindle box (1) position; This tailstock (6) can move on the length direction of lathe bed (7); Main spindle box (1) and the top of tailstock (6) are positioned on the same horizontal line, are used for fixing ball screw assembly;
ⅱ, planker (4) are socketed on the guide rail (5); Can slide at the axial direction of guide rail (5); Location-plate (3) is connected with planker (4) mutually; This location-plate (3) is positioned at the top of planker (4), and location-plate (3) is provided with the U-shaped groove, is used for being connected mutually with the ball nut of ball screw assembly;
ⅲ, limit switch (2) are installed in lathe bed (7) one sides through screw retention; Limit switch (2) is provided with 2; The side that planker (4) is gone up near limit switch (2) is fixed with the limit switch frizzen; Through contacting of limit switch frizzen and limit switch (2), realize the automatic reverse running-in of ball screw assembly;
ⅳ, magnetic powder brake (9) are positioned at lathe bed (7) one sides; This magnetic powder brake (9) is connected with planker (4) mutually; The output shaft of magnetic powder brake (9) is meshed with spur rack; This spur rack is fixed on the lathe bed (7), and with axially paralleling of guide rail (5), magnetic powder brake (9) is used for applying axial load to ball screw assembly;
ⅴ, the logical enough belts of reverse mechanism (8) are connected with the belt wheel of main spindle box (1), the top rotation in the driving main shaft case (1), thus control top positive and negative rotation;
ⅵ, switch board (10) are provided with guidance panel, and switch board (10) is connected with other device that loads running in machine, controls other device work.
2. a kind of ball screw assembly, according to claim 1 loads running in machine, and it is characterized in that: described main spindle box (1) is provided with chuck, through the fixing ball-screw of this chuck.
3. a kind of ball screw assembly, according to claim 1 and 2 loads running in machine, it is characterized in that: the both sides that described location-plate (3) is gone up the U-shaped groove are provided with threaded hole, realize being fixedly connected of location-plate (3) and ball nut through threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203694548U CN202305208U (en) | 2011-09-30 | 2011-09-30 | Loading running-in device of ball screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203694548U CN202305208U (en) | 2011-09-30 | 2011-09-30 | Loading running-in device of ball screw assembly |
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| Publication Number | Publication Date |
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| CN202305208U true CN202305208U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203694548U Expired - Lifetime CN202305208U (en) | 2011-09-30 | 2011-09-30 | Loading running-in device of ball screw assembly |
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| CN (1) | CN202305208U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445340A (en) * | 2011-09-30 | 2012-05-09 | 优励聂夫（南京）科技有限公司 | Loading running-in device for ball screw pair and running-in testing method thereof |
| CN108303252A (en) * | 2018-05-09 | 2018-07-20 | 济宁市微科特机械制造有限责任公司 | A kind of ball-screw accelerating lifetime testing device |
| CN109029984A (en) * | 2018-08-25 | 2018-12-18 | 南京理工大学 | A kind of fourth gear converted measurement mechanism suitable for ball screw assembly, |
-
2011
- 2011-09-30 CN CN2011203694548U patent/CN202305208U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445340A (en) * | 2011-09-30 | 2012-05-09 | 优励聂夫（南京）科技有限公司 | Loading running-in device for ball screw pair and running-in testing method thereof |
| CN102445340B (en) * | 2011-09-30 | 2013-08-07 | 优励聂夫（南京）科技有限公司 | Running-in testing method of loading running-in device for ball screw pair |
| CN108303252A (en) * | 2018-05-09 | 2018-07-20 | 济宁市微科特机械制造有限责任公司 | A kind of ball-screw accelerating lifetime testing device |
| CN109029984A (en) * | 2018-08-25 | 2018-12-18 | 南京理工大学 | A kind of fourth gear converted measurement mechanism suitable for ball screw assembly, |
| CN109029984B (en) * | 2018-08-25 | 2023-12-08 | 南京理工大学 | Four-gear conversion measuring mechanism suitable for ball screw pair |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151210 Address after: Taicang City, Jiangsu province science and Technology Park 215400 Jianxiong Road No. 20 Patentee after: China run Hai Precision Technology Co., Ltd. Address before: 210039, No. 8, long Tibet Road, Yuhua Economic Development Zone, Nanjing, Jiangsu Patentee before: Excellent Nie Fu (Nanjing) Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |