CN114279701B - Ball screw pair fluency detection device - Google Patents
Ball screw pair fluency detection device Download PDFInfo
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- CN114279701B CN114279701B CN202111678562.8A CN202111678562A CN114279701B CN 114279701 B CN114279701 B CN 114279701B CN 202111678562 A CN202111678562 A CN 202111678562A CN 114279701 B CN114279701 B CN 114279701B
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- supporting block
- locking
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- stretching
- sliding rail
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention belongs to the technical field of transmission machinery production, and particularly relates to a ball screw pair fluency detection device which comprises a detection table, wherein a sliding rail and a front supporting block are respectively fixed at the top of the detection table, the front supporting block is in contact with one end of the sliding rail, a rear supporting block and a locking piece are respectively connected onto the sliding rail in a sliding manner, and a stretching rod is fixed on one side wall of the rear supporting block. According to the invention, the slide rail, the front supporting block, the rear supporting block and the clamping mechanism are arranged, so that the screw rod body is fixedly clamped by adopting the central hole, the deviation is avoided, the detection reliability is ensured, the connecting plate, the nut seat and the detection mechanism are arranged, the driving unit drives the nut seat to move so as to enable the screw rod body to rotate, the driving of the screw rod body is realized in a reverse transmission mode, the detection mechanism is matched, the change condition of the driving force in the whole stroke is detected more simply and conveniently, and the two groups of acquired data are adopted for comparison and analysis, so that the error is reduced, and the result is more true and effective.
Description
Technical Field
The invention relates to the technical field of transmission machinery production, in particular to a device for detecting the smoothness of a ball screw pair.
Background
In recent years, with the continuous improvement of the domestic and foreign automation level, the demand of the market for the ball screw pair is larger and larger, and the demand is higher and higher, meanwhile, the comprehensive performance requirement for the screw is stricter, the fluency is one of very important indexes, and the running fluency of the ball screw pair is as follows: in the effective stroke, the difference value between the maximum value and the minimum value of the driving force of any lead is larger, the smoothness is worse, the difference value tends to be zero, the smoothness is better, and the ball screw smoothness directly influences the precision, noise, temperature rise, service life and the like of the ball screw.
The existing detection of the smoothness of the ball screw can only be used for sensing whether clamping stagnation exists or not by rotating the nut by hands of a person, sensing whether the local pretightening force of the assembly is suddenly changed or not, and judging whether the ball screw is qualified or not in a data quantification mode, wherein the mode only depends on personal sensing, and whether the ball screw is qualified or not cannot be reasonably and accurately judged, so that the detection device of the smoothness of the ball screw pair is provided for solving the problem.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a device for detecting the fluency of a ball screw pair, which solves the problem that the fluency is inaccurate when a transmission passing person judges by himself.
(II) technical scheme
The invention adopts the following technical scheme for realizing the purposes:
The utility model provides a ball screw pair fluency detection device, includes the detection platform, the top of detection platform is fixed with slide rail and preceding supporting shoe respectively, preceding supporting shoe is contacted with the one end of slide rail, sliding connection has back supporting shoe and retaining member respectively on the slide rail, a lateral wall of back supporting shoe is fixed with the stretching rod, the other end at the stretching rod is established to the retaining member cover, clamping mechanism and two clamping mechanism between relatively being provided with in preceding supporting shoe and the back supporting shoe have the lead screw body, be provided with the locking mechanism that is used for fastening on the slide rail on the retaining member, the top sliding connection of slide rail has the connecting plate, be provided with the detection mechanism that is used for detecting the nut seat on the lead screw body on the connecting plate, the one end of connecting plate and the drive unit fixed connection who sets up on the detection platform.
Further, the clamping mechanism comprises inner cavities respectively formed in the front supporting block and the rear supporting block, rotary ejector pins are fixed in the inner cavities through bearings, the surfaces of the rotary ejector pins are respectively provided with a stretching nut through threaded connection, one ends of the stretching nuts are respectively provided with an expanding sleeve, one ends of the expanding sleeves are respectively provided with a first locking nut through threaded connection, and one ends of the rotary ejector pins are respectively provided with a second locking nut through threaded connection.
Further, the locking mechanism comprises two locking screws which are symmetrically connected to the front face of the locking piece through threads, pressing blocks are sleeved on the surfaces of the two locking screws, the end parts of the two locking screws are in tight contact with the sliding rail, a side wall of the locking piece is rotationally connected with a stretching screw through a bearing, and one end of the stretching screw is in threaded connection with the stretching rod.
Further, the detection mechanism comprises an installation piece fixed at the top of the connecting plate, the bottom of the nut seat is detachably installed in the installation piece through a cylindrical pin, and two tension pressure sensors are symmetrically fixed on the surface of the installation piece.
(III) beneficial effects
Compared with the prior art, the invention provides a device for detecting the smoothness of a ball screw pair, which has the following beneficial effects:
According to the invention, the slide rail, the front supporting block, the rear supporting block and the clamping mechanism are arranged, so that the screw rod body is fixedly clamped by adopting the central hole, the deviation is avoided, the detection reliability is ensured, the connecting plate, the nut seat and the detection mechanism are arranged, the driving unit drives the nut seat to move so as to rotate the screw rod body, the driving of the screw rod body is realized in a reverse transmission mode, the detection mechanism is matched, the change condition of the driving force in the whole stroke is detected more simply and conveniently, and the two groups of acquired data are adopted for comparison and analysis, so that the error is reduced, and the result is more true and effective.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of the present invention at A;
FIG. 3 is a schematic view of the front support block of the present invention in front cut-away configuration;
FIG. 4 is a schematic view of a locking mechanism according to the present invention;
fig. 5 is a schematic side view of the mounting member of the present invention.
In the figure: 1. a detection table; 2. a slide rail; 3. a front support block; 4. a rear support block; 5. a locking member; 6. a stretching rod; 7. clamping mechanism; 701. an inner cavity; 702. rotating the thimble; 703. stretching the nut; 704. expanding sleeve; 705. a first lock nut; 706. a second lock nut; 8. a screw body; 9. a locking mechanism; 901. a locking screw; 902. briquetting; 903. stretching the screw; 10. a connecting plate; 11. a nut seat; 12. a detection mechanism; 1201. a mounting member; 1202. a cylindrical pin; 1203. and (5) pulling the pressure sensor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1, fig. 2 and fig. 4, a device for detecting the smoothness of a ball screw pair according to an embodiment of the present invention includes a detection table 1, a slide rail 2 and a front support block 3 are fixed at the top of the detection table 1, the front support block 3 contacts one end of the slide rail 2, a rear support block 4 and a locking member 5 are slidably connected to the slide rail 2, a stretching rod 6 is fixed to a side wall of the rear support block 4, the locking member 5 is sleeved at the other end of the stretching rod 6, a clamping mechanism 7 is relatively arranged between the front support block 3 and the rear support block 4, a screw body 8 is clamped between the two clamping mechanisms 7, a locking mechanism 9 for fastening on the slide rail 2 is arranged on the locking member 5, a connecting plate 10 is slidably connected above the slide rail 2, a detection mechanism 12 for detecting a nut seat 11 on the screw body 8 is arranged on the connecting plate 10, and one end of the connecting plate 10 is fixedly connected to a driving unit arranged on the detection table 1; in summary, during detection, the clamping mechanism 7 on the front supporting block 3 is operated, after one end of the detected screw rod body 8 is clamped, the rear supporting block 4 is moved to a proper position, the clamping mechanism 7 on the rear supporting block 4 is operated to clamp the other end of the screw rod body 8, then the locking mechanism 9 is operated, the rear supporting block 4 can be relatively firmly fixed on the sliding rail 2 through the locking piece 5 and the stretching rod 6, the locking piece 5 can be axially moved by the operation of the locking mechanism 9, so that the distance between the locking piece and the rear supporting block 4 can be pulled, the thermal elongation generated by the operation of the screw rod body 8 is eliminated, finally, the connecting plate 10 is controlled to linearly move by the driving unit, the nut seat 11 is driven to linearly move, the screw rod body 8 rotates under the pushing of the nut seat 11, the detection mechanism 12 collects force change data, the change data is transmitted to the PC end through the signal amplifier, the change of the full stroke force of the screw rod body 8 is analyzed, the two groups of data can be compared and analyzed, the error generated by the external influence is reduced, and the detection result is more true.
As shown in fig. 3, in some embodiments, the clamping mechanism 7 includes an inner cavity 701 respectively formed in the front supporting block 3 and the rear supporting block 4, the inner cavity 701 is fixed with a rotary thimble 702 through bearings, the surfaces of the rotary thimble 702 are all connected with a stretching nut 703 through threads, one end of the stretching nut 703 is fixed with an expansion sleeve 704, one end of the expansion sleeve 704 is connected with a first locking nut 705 through threads, one end of the rotary thimble 702 is connected with a second locking nut 706 through threads, the first locking nut 705 is matched with the expansion sleeve 704, the screw body 8 is radially clamped, then a person uses one hand to clamp and limit one end of the rotary thimble 702 at the second locking nut 706, the rotary thimble 702 cannot rotate, the other hand rotates the stretching nut 703, a central hole of the screw body 8 is tightly attached to the end of the rotary thimble 702, and the central hole is an original reference when the screw body 8 is processed.
As shown in fig. 4, in some embodiments, the locking mechanism 9 includes two locking screws 901 symmetrically connected to the front surface of the locking member 5 through threads, a pressing block 902 is sleeved on the surfaces of the two locking screws 901, the ends of the two locking screws 901 are in tight contact with the sliding rail 2, a side wall of the locking member 5 is rotatably connected with a stretching screw 903 through a bearing, one end of the stretching screw 903 is in threaded connection with the stretching rod 6, the locking screw 901 is rotated to enable the locking member 5 to be locked or unlocked as required, the pressing block 902 can bear and expand the stress area when the two locking screws 901 are screwed to perform locking and positioning, so that the pressing deformation of the locking member 5 is avoided, the normal sliding of the locking member 5 on the sliding rail 2 is affected, and the distance between the locking member 5 and the rear supporting block 4 can be enlarged before the locking member 5 is fixed by rotating the stretching screw 903, so as to eliminate the thermal elongation generated by the operation of the screw body 8.
As shown in fig. 2 and fig. 5, in some embodiments, the detection mechanism 12 includes a mounting member 1201 fixed on the top of the connection plate 10, the bottom of the nut seat 11 is detachably mounted in the mounting member 1201 through a cylindrical pin 1202, two tension pressure sensors 1203 are symmetrically fixed on the surface of the mounting member 1201, the cylindrical pin 1202 can conveniently disassemble and assemble the nut seat 11, and the two tension pressure sensors 1203 can simultaneously collect data on two sides, so that personnel can analyze the data conveniently, and errors are reduced.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a ball screw pair fluency detection device, includes detection platform (1), its characterized in that: the top of the detection table (1) is respectively fixed with a sliding rail (2) and a front supporting block (3), the front supporting block (3) is in contact with one end of the sliding rail (2), a rear supporting block (4) and a locking piece (5) are respectively connected onto the sliding rail (2) in a sliding manner, a stretching rod (6) is fixed on one side wall of the rear supporting block (4), the locking piece (5) is sleeved on the other end of the stretching rod (6), a clamping mechanism (7) is arranged in the front supporting block (3) and the rear supporting block (4) and a screw rod body (8) is clamped between the two clamping mechanisms (7), a locking mechanism (9) used for being fastened onto the sliding rail (2) is arranged on the locking piece (5), a detection mechanism (12) used for detecting a screw rod seat (11) on the screw rod body (8) is arranged on the connecting plate (10), and one end of the connecting plate (10) is fixedly connected with a driving unit arranged on the detection table (1); the clamping mechanism (7) comprises inner cavities (701) which are respectively arranged in a front supporting block (3) and a rear supporting block (4), rotary ejector pins (702) are fixed in the inner cavities (701) through bearings, stretching nuts (703) are connected to the surfaces of the rotary ejector pins (702) through threads, expanding sleeves (704) are fixed at one ends of the stretching nuts (703), first locking nuts (705) are connected to one ends of the expanding sleeves (704) through threads, and second locking nuts (706) are connected to one ends of the rotary ejector pins (702) through threads; the locking mechanism (9) comprises two locking screws (901) which are symmetrically connected to the front surface of the locking piece (5) through threads, pressing blocks (902) are sleeved on the surfaces of the two locking screws (901), the end parts of the two locking screws (901) are in close contact with the sliding rail (2), a side wall of the locking piece (5) is rotationally connected with a stretching screw (903) through a bearing, and one end of the stretching screw (903) is in threaded connection with the stretching rod (6); the detection mechanism (12) comprises an installation piece (1201) fixed at the top of the connecting plate (10), the bottom of the nut seat (11) is detachably installed in the installation piece (1201) through a cylindrical pin (1202), and two tension pressure sensors (1203) are symmetrically fixed on the surface of the installation piece (1201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111678562.8A CN114279701B (en) | 2021-12-31 | 2021-12-31 | Ball screw pair fluency detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111678562.8A CN114279701B (en) | 2021-12-31 | 2021-12-31 | Ball screw pair fluency detection device |
Publications (2)
| Publication Number | Publication Date |
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| CN114279701A CN114279701A (en) | 2022-04-05 |
| CN114279701B true CN114279701B (en) | 2024-05-31 |
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| CN202111678562.8A Active CN114279701B (en) | 2021-12-31 | 2021-12-31 | Ball screw pair fluency detection device |
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| CN114279701A (en) | 2022-04-05 |
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