CN101660594A - Error-compensating type bearing screw conveying device - Google Patents
Error-compensating type bearing screw conveying device Download PDFInfo
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- CN101660594A CN101660594A CN200810214688A CN200810214688A CN101660594A CN 101660594 A CN101660594 A CN 101660594A CN 200810214688 A CN200810214688 A CN 200810214688A CN 200810214688 A CN200810214688 A CN 200810214688A CN 101660594 A CN101660594 A CN 101660594A
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Abstract
The invention relates to a compensating error type screw conveying device which utilizes a radial bearing. The compensating error type screw conveying device is characterized by comprising a screw shaft, a nut body, the radial bearing and a position adjuster, wherein a screw is formed on the outer circumferential surface of the screw shaft; the screw shaft is inserted in the nut body, and a plurality of mounting holes are formed on the outer circumferential surface of the nut body along the spiral route of the screw; the radial bearing is arranged in the mounting holes of the nut body, an outer wheel of the radial bearing is adjacently connected outside the screw of the screw shaft, and the radial bearing rotates according to the regular position when the screw shaft or the nut body rotates; and the position adjuster is arranged at the upper part of the radial bearing and adjusts the position of the radial bearing towards the center of the screw shaft. The invention has has simple structure, and can minimize friction between the screw shaft and the nut, and minimized vibration, noise and part damages; the linear motion, the invention can completely cut off the conflict among partsin the conveying device to minimize vibration, noise and part damages; in addition, the invention can compensate clearances among parts caused by the reduction of part processing precision, as well asthe abrasion between the radial bearing and the screw due to long-term use, thereby eliminating noise, vibration, heat generation, backflash, and the like caused by the conflict among the parts, therefore, the invention has the epoch-making effect of prolonging the service life of the screw conveying device.
Description
Technical field
The present invention relates to utilize the screw conveying device of radial bearing.Specifically, relate in conjunction with screw axis and nut and rotary screw axle or nut, the activation members that makes it nut or be combined in nut is carried out in the straight-line screw conveying device, the internal thread of nut inner face is formed with the radial bearing that rotates by regular position, when taking place to isolate between radial bearing and the screw axis screw rod, be easy to compensate these error-compensating type bearing screw conveying device.
Background technique
In conjunction with screw axis and nut rotary screw axle, thereby make nut or carry out straight-line screw conveying device in conjunction with the activation members of nut and mainly used the ball screw feedway.The ball screw feedway forms spirality inner peripheral surface groove (14) at nut (13) inner face, form spirality outer peripheral surface (12) afterwards in screw axis (11) outside, insert a plurality of steel balls (10) between inner peripheral surface groove (14) and the outer peripheral surface (12), under the state that reduces friction between screw axis (11) and the nut (13), the rotating force of screw axis (11) is converted to the straight line motion of nut (13).Illustrate in order internal ball to be circulated, possess the longitudinal section of arrangement for deflecting (deflector) the mode ball screw feedway that returns part (return piece) at Fig. 1.Fig. 2 is the cross-sectional view of the ball screw feedway of Fig. 1.As shown in Figures 1 and 2, in order to be opposed to screw axis outer peripheral surface groove (12), form the nut (13) of spirality inner peripheral surface groove (14) in screw axis (11) outer installment.Insert a plurality of steel balls (10) so mutually between the outer peripheral surface groove (12) of the semi-circular cross-section of opposition and the inner peripheral surface groove (14), return part (18) for the ball that circulates (10) forms in the inner side of nut (13).Symbol 17 is parts of circulation ball (10).According to structure so, when the rotating force of ball screw feedway outside is sent to screw axis (11) and rotates these, internal ball (10) is rotated along outer peripheral surface groove (12) and inner peripheral surface groove (14), pressing screw axis (11) direction releases nut (13) or in conjunction with these activation members, circulates by returning part (18) again.
But, so traditional ball screw feedway, its complex structure and difficult processing.Machining error or wearing and tearing taking place and when the gap takes place, clashes between the part and take place to shake and noise between ball (10) and the ball (10), between the outer peripheral surface groove (12) of ball (10) and screw axis and between the interior groove (14) of ball (10) and nut (13).So vibrations and noise make part impaired, and become the reason of frequent maintenance or replacing ball screw feedway or its part in the straight line motion machinery that uses the ball screw feedway.
Summary of the invention
The present invention who creates for the problem that solves above-mentioned traditional ball screw feedway, its purpose is to provide simple in structure and minimizes between screw axis and the nut, cut off fully and carry out the conflict between the part in the straight-line feedway, and minimize the impaired error-compensating type bearing screw conveying device of vibrations, noise and part.
Other purpose of the present invention is to provide because of part processing precision descends and has the gap between the part, also compensates these when according to the friction between radial bearing and the screw rod wearing and tearing taking place.Thereby eliminate error-compensating type bearing screw conveying device because of the conflict generation noise between the part, vibrations, heat generation, backlash etc.
Another object of the present invention is to provide because of long-time when using according to the friction generation noise between radial bearing and the screw rod, vibrations, heat generation, backlash etc., be easy to compensate the gap between radial bearing and the screw rod and the power (precompressed) of adjacency, thereby abate the noise, shake, the error-compensating type bearing screw conveying device of heat generation, backlash etc.
Another object of the present invention is to provide the free of losses and critically be converted to the straight-line error-compensating type bearing screw conveying device of nut of rotatablely moving screw axis.
To achieve these goals,, it is characterized in that, comprise the screw axis that forms screw rod on the outer peripheral surface according to error-compensating type bearing screw conveying device of the present invention; Above-mentioned screw axis is inserted in inside and forms the nut body of a plurality of mounting holes at outer peripheral surface along the path that meets above-mentioned screw spiral; Be located at the mounting hole of above-mentioned nut body, and foreign steamer is in abutting connection with the screw rod outside of above-mentioned screw axis, when above-mentioned screw axis or nut body rotation, by the radial bearing of regular position rotation; And be located at the top of above-mentioned radial bearing, adjust the position regulator of radial bearing position to the screw axis center.
Above-mentioned position regulator can comprise: the supporting frame that is formed on nut body mounting hole lower end; Be inserted in above-mentioned mounting hole and be located at the spring on above-mentioned supporting frame top; Be inserted in above-mentioned mounting hole and be located at above-mentioned spring top and below the fixture of running shaft of fixed radial bearing; Utilize screw to combine with the said fixing device top that is inserted in above-mentioned mounting hole, and the said fixing device is pressed the pressurization of spring direction, adjust the compensation cap of the screw axis central direction height of said fixing device according to the screw tightening degree.
And above-mentioned position regulator comprises: the supporting frame that is formed on nut body mounting hole lower end; Be inserted in above-mentioned mounting hole and be located at the spring on above-mentioned supporting frame top; Above the flight that is inserted in above-mentioned mounting hole and is located at above-mentioned spring top and can inserts barpin is formed on, and below the fixture of running shaft of fixed radial bearing; Connect the pin-and-hole on above-mentioned mounting hole top by the screw axis length direction; Be inserted in the flight of above-mentioned pin-and-hole and fixture, according to the compensation pin of the screw axis central direction height that is inserted in flight diameter adjustable fixer partly.
Description of drawings
Fig. 1 is the structural section figure of common ball screw.
Fig. 2 is the A-A line sectional view of Fig. 1.
Fig. 3 is the exploded perspective view of the error-compensating type bearing screw conveying device of first example according to the present invention.
Fig. 4 is the longitudinal section of the error-compensating type bearing screw conveying device of first example according to the present invention.
Fig. 5 is the cross-sectional view of the error-compensating type bearing screw conveying device of first example according to the present invention.
Fig. 6 is the fixture oblique drawing of the present invention's first example.
Fig. 7 is the partial cross section figure of diagram compensation cap, fixture, radial bearing and screw rod relation.
Fig. 8 is the longitudinal section of the conveying action of diagram error-compensating type bearing screw conveying device of first example according to the present invention.
Fig. 9 is when the sectional shape of the present invention's first example screw rod is triangle, the partial cross section figure of diagram compensation cap, fixture, radial bearing and screw rod relation.
Figure 10 is the exploded perspective view of the error-compensating type bearing screw conveying device of second example according to the present invention.
Figure 11 is the longitudinal section of the error-compensating type bearing screw conveying device of second example according to the present invention.
Figure 12 is the cross-sectional view of the error-compensating type bearing screw conveying device of second example according to the present invention.
Figure 13 is to use the fixture oblique drawing at the present invention's second example.
Figure 14 is the partial cross section figure of diagram compensation pin, fixture, radial bearing and screw rod relation.
Figure 15 is the partial cross section figure of diagram compensation pin diameter and fixture position relation.
Figure 16 is the longitudinal section of the conveying action of diagram error-compensating type bearing screw conveying device of second example according to the present invention.
Figure 17 is the longitudinal section that the compensation pin independently is installed at each radial bearing of error-compensating type bearing screw conveying device of second example according to the present invention.
Figure 18 a and 18b are at the present invention's second example screw rod sectional shape when being trapezoidal, the partial cross section figure of diagram radial bearing and screw rod connecting means.
Figure 19 and 20 is longitudinal sections that the lubricant oil storage box is installed on the error-compensating type bearing screw conveying device of second example according to the present invention in addition.
＜reference numeral explanation 〉
200: screw axis 210: screw rod
300: nut body 310: mounting hole
320: breaker slot 350: pin-and-hole
360: supporting frame 400: fixture
410: body 420: axis hole
430: bearing gasket 440: projection
450: flight 500: radial bearing
600: running shaft 700: spring
800: compensation cap 900: the compensation pin
Embodiment
Below, the example that present invention will be described in detail with reference to the accompanying.
Fig. 3 to Fig. 9 is the error-compensating type bearing screw conveying device of first example according to the present invention.Figure 10 to Figure 20 is the error-compensating type bearing screw conveying device of second example according to the present invention.Used compensation cap (800) at first example as the position regulator of radial bearing, used compensation pin (900) as the position regulator of radial bearing at second example.
Fig. 3 is the exploded perspective view of the error-compensating type bearing screw conveying device of first example according to the present invention.Fig. 4 is the longitudinal section of the error-compensating type bearing screw conveying device of first example according to the present invention.Fig. 5 is the cross-sectional view of the error-compensating type bearing screw conveying device of first example according to the present invention.Fig. 6 is the fixture oblique drawing of the present invention's first example.Fig. 7 is the partial cross section figure of diagram compensation cap, fixture, radial bearing and screw rod relation.Fig. 8 is the longitudinal section of the conveying action of diagram error-compensating type bearing screw conveying device of first example according to the present invention.Fig. 9 is when the sectional shape of the present invention's first example screw rod is triangle, the partial cross section figure of diagram compensation cap, fixture, radial bearing and screw rod relation.
With reference to Fig. 3 to Fig. 5, can be included in the screw axis (200) that forms screw rod (210) on the outer peripheral surface according to error-compensating type bearing screw conveying device of the present invention, above-mentioned screw axis (200) is inserted in inner cylindrical shape nut body (300).Above-mentioned screw axis (200) connects rotating powers such as motor, and above-mentioned nut body (300) connects activation members.But standing screw axle (200) as required, above-mentioned nut body (300) can all connect rotating power and activation members.Especially, during some length of screw axis (200) length, be not straight line travelling nut body (300) by external impetus rotary screw axle (200), but with external impetus swivel nut body (300), the efficient that the while straight line moves on standing screw axle (200) is better.At example of the present invention the example of straight line motion nut body (300) with external impetus rotary screw axle (200) has been described mainly, but the present invention is not limited to these.Above-mentioned explanation is applicable to the swivel nut body with external impetus swivel nut body (300) with assuming as a matter of course, and straight line is displaced into the example on the standing screw axle (200) simultaneously.
According to one of error-compensating type bearing screw conveying device feature of the present invention is to go up screw rod (201) thread path and the engagement path that forms along the screw axis (200) of above-mentioned nut body outer peripheral surface, form a plurality of mounting holes (310), and this mounting hole (310) lining is provided with the radial bearing (500) that connects running shaft (600) and be rotated.As shown in Figure 4, at this moment, its outer wheel surface of above-mentioned radial bearing (500) is in abutting connection with the screw thread water caltrop or the screw thread side of above-mentioned screw rod (201).Thereby, the nut inner thread of the outside thread engagement of formation and above-mentioned screw axis (200).At this moment, for twocouese rotation according to above-mentioned screw axis (200), above-mentioned nut body (300) can move by twocouese, among a plurality of radial bearings (500) half be screw axis (200) when only rotating in the direction of the clock in abutting connection with screw rod (201), remaining half be screw axis (200) only when counterclockwise rotating in abutting connection with screw rod (201).Thereby, above-mentioned screw axis (200) moves also above-mentioned radial bearing (500) at regular position non-displacement (displacement) by any direction rotation and above-mentioned nut body (300) by any direction, in abutting connection with the water caltrop or the side of screw rod (201) screw thread, and only be rotated.
According to screw conveying device of the present invention, according to so simple structure, not only minimize the friction between screw axis (200) and the nut body (300), and cut off fully and carry out the conflict between the part in the straight-line feedway, and minimize the impaired of vibrations, noise and radial bearing.
According to error-compensating type bearing screw conveying device of the present invention, further feature is; When above-mentioned radial bearing (500) is connected running shaft (600) and is located at the mounting hole (310) of above-mentioned nut body (300), can adjust the position of diameter to bearing (500) screw axis (200) center.For these, error-compensating type bearing screw conveying device according to the present invention possesses the position regulator of radial bearing (500).This position regulator is that the processing precise degree of screw rod (201), nut body (300), mounting hole (310), running shaft (600), radial bearing (500) etc. descends and also needs to compensate above-mentioned radial bearing (500) after the assembling and fail with the phenomenon of suitable precompressed in abutting connection with screw rod (201), or when noise, vibrations, heat generation, backlash etc. taking place, adjust gap and the precompressed between above-mentioned radial bearing (500) and the screw rod (201) and correct these because of the conflict between the screw conveying device part and friction.
With reference to Fig. 3, Fig. 6 and Fig. 7, the position regulator of first example comprises the supporting frame (360) that is formed on nut body (300) mounting hole (310) lower end according to the present invention, be inserted in above-mentioned mounting hole (310) and be located at the spring (700) on above-mentioned supporting frame (310) top, be inserted in above-mentioned mounting hole (310) and be located at above-mentioned spring (700) top and below the fixture (400) of running shaft of fixed radial bearing (500), utilize screw to combine with said fixing device (400) top that is inserted in above-mentioned mounting hole (310), and said fixing device (400) is pressed spring (700) direction pressurize, adjust the compensation cap (800) of the screw axis central direction height of said fixing device (400) according to the screw tightening degree.
Said fixing device (400) can be by moving up and down in above-mentioned mounting hole (310).For these, when mounting hole (310) was cylindrical shape, said fixing device (400) form was for being inserted in mounting hole (310) and movably cylindrical.And the lower diameter of the body of said fixing device (410) is littler and preferably to form section between up and down poor than top external diameter.Above-mentioned spring (700) is inserted in body (410) bottom at the fixture of little external diameter, and is stopped in the section difference.
Form the axis hole (420) of the running shaft (600) of fixed radial bearing (500) in said fixing device (400) bottom.Above-mentioned axis hole (420) is provided with tap (tap), is inserted on the part of stating axis hole (420) on the running shaft (600) screw that forms in conjunction with above-mentioned tap, running shaft (600) screw in conjunction with axis hole (420) for well.
The bearing gasket (430) of recessed obliquely a part of radial bearing (500) is formed at said fixing device (400) bottom.The part of above-mentioned radial bearing (500) is inserted in above-mentioned bearing gasket (430) lining, foreign steamer of its remaining part in abutting connection with screw rod (210) for well.At this moment, the angle of inclination of bearing gasket (430) is according to screw rod (210) the structure difference of screw axis (200), but any situation also the foreign steamer of radial bearing form a certain size angle of inclination for adjacency screw rod (210) screw thread water caltrop or side.And above-mentioned axis hole this moment (420) is formed at the floor of above-mentioned bearing gasket (430), and its direction is perpendicular to floor.Thereby mounting hole (310) can keep tilting perpendicular to screw axis (200) length direction also radial bearing (500).Only change the setting angle of the also variable radial bearing of fixture (400) (500).
As Fig. 3 and shown in Figure 6, projection (440) at the underpart of said fixing device (400) with integrally formed, supporting frame (360) in mounting hole (310) lower end is gone up the breaker slot (320) that forms the above-mentioned projection of insertion (440), and the radial bearing (500) that makes it to be inserted in fixture (400) is fixed by certain orientation always.
Above-mentioned spring (700) lower end is above supporting frame (360), and the upper end sandwiches in the body of said fixing device (410) bottom.
As shown in Figure 7, above-mentioned compensation cap (800) forms outside thread in its outside, and inner face also forms the internal thread that combines with the outside thread of above-mentioned compensation cap (800) on above-mentioned mounting hole (310) top.
According to as the position regulator of the present invention's first example of above-mentioned structure, the user as shown in Figure 7, because of the machining error of part or the reasons such as parts depreciation in the middle of the use, isolation phenomenon between screw rod (201) and the radial bearing (500) and compressive force taking place when excessive or precompressed when inappropriate, moves by below or top compensating cap (800).Then, said fixing device (400) overcomes the rebounding force of above-mentioned spring (700) in compensation cap (800) bottom or is subjected to the support of rebounding force, and moves by below or top.Therefore, do not decompose whole screw conveying device and externally be easy to adjust gap and precompressed between screw rod (201) and the radial bearing (500) yet.
Fig. 8 carries nut body (300) about pressing according to the rotation of screw axis (200) according to the compensating error type screw conveying device (100a) that compensation cap (800) is adjusted gap between screw rod (201) and the radial bearing (500) and precompressed.Above-mentioned radial bearing (500) is the free of losses and critically be converted to the straight line motion of nut of rotatablely moving of screw axis (200).
The screw rod sectional shape of the compensating error type screw conveying device screw axis (200) of first example such as Fig. 3 be not only applicable to semicircular groove, and as shown in Figure 9, other shapes such as triangle, ladder shape are also directly applicable to shown in Figure 8 according to the present invention.As shown in Figure 9, when the screw rod sectional shape is triangle, the best side of radial bearing (500) in abutting connection with screw flight.At this moment, high speed rotating screw axis (200) the also adjacency between screw rod (201) and the radial bearing (500) is good, and noise improves axial support force less again, thereby carries nut body (300) safely.
Figure 10 is the exploded perspective view of the error-compensating type bearing screw conveying device of second example according to the present invention.Figure 11 is the longitudinal section of the error-compensating type bearing screw conveying device of second example according to the present invention.Figure 12 is the cross-sectional view of the error-compensating type bearing screw conveying device of second example according to the present invention.Figure 13 is to use the fixture oblique drawing at the present invention's second example.Figure 14 is the partial cross section figure of diagram compensation pin, fixture, radial bearing and screw rod relation.Figure 15 is the partial cross section figure of diagram compensation pin diameter and fixture position relation.Figure 16 is the longitudinal section of the conveying action of diagram error-compensating type bearing screw conveying device of second example according to the present invention.Figure 17 is the longitudinal section that the compensation pin independently is installed at each radial bearing of error-compensating type bearing screw conveying device of second example according to the present invention.Figure 18 a and 18b are at the present invention's second example screw rod sectional shape when being trapezoidal, the partial cross section figure of diagram radial bearing and screw rod connecting means.Figure 19 and 20 is longitudinal sections that the lubricant oil storage box is installed on the error-compensating type bearing screw conveying device of second example according to the present invention in addition.
As Figure 10 and shown in Figure 14, the position regulator of second example comprises the supporting frame (360) that is formed on nut body (300) mounting hole (310) lower end according to the present invention, be inserted in above-mentioned mounting hole (310) and be located at the spring (700) on above-mentioned supporting frame (360) top, above the flight (450) that is inserted in above-mentioned mounting hole (310) and is located at above-mentioned spring (700) top and can inserts barpin is formed on, and below the fixture (400) of running shaft (600) of fixed radial bearing (500), connect the pin-and-hole (350) on above-mentioned mounting hole (310) top by screw axis (200) length direction, be inserted in the flight (450) of above-mentioned pin-and-hole (350) and fixture (400), according to the compensation pin (900) of screw axis (200) the central direction height that is inserted in flight (450) diameter adjustable fixer (400) partly.
Above-mentioned compensation pin (900) at first is inserted under the state of above-mentioned mounting hole (310) in conjunction with the fixture (400) of spring (700) and radial bearing (500), in nut body (300) side is inserted in the pin-and-hole (350) and the flight above the fixture (450) of nut body (300).To shown in Figure 12, when the position compensation amount of each radial bearing (500) is identical, press fixture (400) on a plurality of mounting holes (310) that screw axis (200) length direction is provided with as Figure 10 with a sufficiently long compensation pin of length (900) pressurization.But, as shown in figure 17, because of machining error or wear intensity different mutually, and the position compensation amount of radial bearing (500) is when different, compensation pin (900a) is than long a little its diameter difference that makes it of the flight (450) of fixture (400), thereby each fixture (400) is installed separately, and can stick with the compensation pin in the gap between the compensation pin (900a).
With reference to Figure 10 and Figure 13, the position regulator of second example uses with compensation pin (900) replacement compensation cap (800) and is the compensating error instrument according to the present invention, different with the position regulator of first example according to the present invention is to form flight (450) on fixture (400), and nut body (300) is gone up and formed pin-and-hole (350).
Though not shown, the entire length of compensation pin (900) or compensation pin (900a) and additional pin is shorter than above-mentioned nut body (300) length, makes above-mentioned pin-and-hole (350) not fill up two side ends, on its part of not filling up in conjunction with screw and fixed compensation pin (900).
The position regulator of second example according to the present invention, because of adjusting compensation rate with compensation pin (900) diameter, compensating error is very careful.With reference to Figure 14 and Figure 15, when adding large compensation pin (900) diameter, fixture (400) and descend in conjunction with these and rotatable radial bearing (500).When reducing compensation pin (900) diameter, said fixing device (400) and radial bearing (500) rise according to the elastic force of spring (700).At this moment, supporting frame (360) and spring (700) continue to provide elastic anchorage force upwards to fixture (400).
Specifically, as shown in figure 15, fixture (400) sandwiches when the flight (450) of the pin-and-hole (350) of nut body (300) and fixture (400), and fixture (400) is subjected to the elastic force top of rebounding according to spring (700).Sandwich compensation pin (900) at the flight (450) of said fixing device (400) and also be upward to pressurization, at this moment the part of compensation pin (900) is inserted in pin-and-hole (350) and is stuck.Therefore, compensation pin (900) than inserting minor diameter compensation pin (900), fixture (400) is added to press according to the difference of diameter downwards, and radial bearing (500) is shifted to screw axis (200) central direction when diameter is big.By the wear extent of these compensation because of machining error and friction generation, thereby screw rod (200) and radial bearing (500) are mutually with suitable precompressed adjacency.
Therefore, above-mentioned radial bearing (500) lacks than the ball screw noise in abutting connection with the screw rod driving period, and obtains accurate fed distance.And, during because of the pre-drops of reason such as wearing and tearing of radial bearing (500), do not decompose yet compensating error fast of whole screw conveying device.
Figure 16 is the figure that carries nut body (300) about utilizing the rotation of screw axis (200) to press according to the compensating error type screw conveying device (100a) that compensation pin (900) is adjusted gap between screw rod (201) and the radial bearing (500) and precompressed.Above-mentioned radial bearing (500) is the free of losses and critically be converted to the straight line motion of nut of rotatablely moving of screw axis (200).In addition, when in abutting connection with screw rod (200) and long-time the enforcement wearing and tearing taking place as above-mentioned radial bearing (500), in abutting connection with the pre-drops of the radial bearing (500) of screw rod (200) gap takes place.Problems such as conflict between the generation adjacency thus and noise, vibrations, heat generation, backlash.At this moment, sandwich pin-and-hole (350) than large diameter compensation pin (900) before, and make the minor diameter compensation pin (900) of front break away from the pin-and-hole (350) of nut bodies (300) and the flight (450) of fixture (400) in nut body (300).When flight (450) lining of the pin-and-hole (350) of above-mentioned nut body (300) and fixture (400) is inserted into the compensation pin (900) of larger diameter, compensation pin (900) is added press fit device (400) according to the diameter that increases, thus problems such as conflict between the elimination part and noise, vibrations, heat generation, backlash.
The screw rod sectional shape of the compensating error type screw conveying device screw axis (200) of second example such as Figure 10 are to shown in Figure 17 according to the present invention, be not only applicable to semicircular groove, and shown in Figure 18 a and Figure 18 b, other shapes such as triangle, ladder shape are also directly applicable.When the screw rod sectional shape is ladder shape, shown in Figure 18 a, the best side of radial bearing (500) in abutting connection with screw flight.At this moment, high speed rotating screw axis (200) the also adjacency between screw rod (201) and the radial bearing (500) is good, and noise improves axial support force less again, thereby carries nut body (300) safely.But when screw axis (200) did not carry out high speed rotating, shown in Figure 18 a, this radial bearing was also harmless in abutting connection with screw rod (201) screw thread water caltrop.
According to compensating error type screw conveying device of the present invention, as shown in figure 12, go up to form be communicated with mounting hole (310) and to the lubricant oil supply orifice (370) of the friction part supplying lubricating oil of bearing (500) and screw rod (200) radially at above-mentioned nut body (300).And, shown in Figure 19 and 20,, lubricating oil storage case (1000) is set in nut body (300) outside or inside in order to be communicated with lubricant oil supply orifice (360).When nut body (300) inside is provided with lubricating oil storage case (1000), as shown in figure 20, insert radial bearing (500) in mounting hole (310) lining at above-mentioned nut body (300) two ends, in the middle mounting hole lubricating oil storage case (1000) is set.Improve the friction position of screw rod (210) and radial bearing (500) by these, and reduce wear.
Industrial applicability
According to as the present invention of above-mentioned structure, it is simple in structure and minimize friction between screw shaft and the nut. When carrying out rectilinear motion, cut off the conflict between the part in the conveying device fully, and minimize vibrations, noise and zero The damage of part. And, because of part processing precise degree descend have the gap between the part or use for a long time according to Friction between journal bearing and the screw rod also compensates these when wearing and tearing take place. Thereby eliminate because of the conflict between the part Noise, vibrations, heat generation, backlash etc. take place. Has the effect that increases the screw conveying device life-span epoch-makingly.
And, according to the present invention the free of losses and critically be converted to the straight line fortune of nut of rotatablely moving of screw shaft Moving. Therefore, can obtain energy efficiency and the high bearing screw conveying device of conveying precision.
Claims (8)
1, error-compensating type bearing screw conveying device is characterized in that, comprises the screw axis that forms screw rod on the outer peripheral surface;
Above-mentioned screw axis is inserted in inside and forms the nut body of a plurality of mounting holes at outer peripheral surface along the path that meets above-mentioned screw spiral;
Be located at the mounting hole of above-mentioned nut body, and foreign steamer is in abutting connection with the screw rod outside of above-mentioned screw axis, when above-mentioned screw axis or nut body rotation, by the radial bearing of regular position rotation; And
Be located at the top of above-mentioned radial bearing, adjust the position regulator of radial bearing position to the screw axis center.
According to the error-compensating type bearing screw conveying device of claim 1, it is characterized in that 2, above-mentioned position regulator comprises: the supporting frame that is formed on nut body mounting hole lower end; Be inserted in above-mentioned mounting hole and be located at the spring on above-mentioned supporting frame top; Be inserted in above-mentioned mounting hole and be located at above-mentioned spring top and below the fixture of running shaft of fixed radial bearing; And utilize screw to combine with the said fixing device top that is inserted in above-mentioned mounting hole, and the said fixing device is pressed the pressurization of spring direction, adjust the compensation cap of the screw axis central direction height of said fixing device according to the screw tightening degree.
According to the error-compensating type bearing screw conveying device of claim 1, it is characterized in that 3, above-mentioned position regulator comprises: the supporting frame that is formed on nut body mounting hole lower end; Be inserted in above-mentioned mounting hole and be located at the spring on above-mentioned supporting frame top; Above the flight that is inserted in above-mentioned mounting hole and is located at above-mentioned spring top and can inserts barpin is formed on, and below the fixture of running shaft of fixed radial bearing; Connect the pin-and-hole on above-mentioned mounting hole top by the screw axis length direction; And the flight that is inserted in above-mentioned pin-and-hole and fixture, according to the compensation pin of the screw axis central direction height that is inserted in flight diameter adjustable fixer partly.
4, according to the error-compensating type bearing screw conveying device of claim 1, it is characterized in that, half is a screw axis or nut body connecting screw rod when only rotating in the direction of the clock among a plurality of radial bearings, remaining half be only connecting screw rod when counterclockwise rotating of screw axis or nut body.
5, according to the error-compensating type bearing screw conveying device of claim 2 or claim 3, it is characterized in that, projection is to be integrally formed at the underpart of said fixing device, and the supporting frame in the mounting hole lower end forms the breaker slot that inserts above-mentioned projection, makes it fixture and does not rotate.
6, according to the error-compensating type bearing screw conveying device of claim 2 or claim 3, it is characterized in that, form the bearing gasket of a recessed obliquely radial bearing part in said fixing device bottom, an above-mentioned radial bearing part is inserted in above-mentioned bearing gasket, and its remaining part protrudes from the foreign steamer of the outside also projection of bearing gasket in abutting connection with screw rod.
7, according to the bearing screw conveying device of compensated for the machining error of claim 3, it is characterized in that above-mentioned compensation pin can pressurize simultaneously and be located at the fixture of a plurality of mounting holes by the screw axis length direction.
8, according to the bearing screw conveying device of compensated for the machining error of claim 3, it is characterized in that, above-mentioned compensation pin is for each different radial bearing of individually pressurize machining error or wear intensity, and is longer and be inserted into a plurality of than the flight width of fixture a little.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810214688 CN101660594B (en) | 2008-08-29 | 2008-08-29 | Error-compensating type bearing screw conveying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810214688 CN101660594B (en) | 2008-08-29 | 2008-08-29 | Error-compensating type bearing screw conveying device |
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| Publication Number | Publication Date |
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| CN101660594A true CN101660594A (en) | 2010-03-03 |
| CN101660594B CN101660594B (en) | 2013-10-16 |
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| CN 200810214688 Expired - Fee Related CN101660594B (en) | 2008-08-29 | 2008-08-29 | Error-compensating type bearing screw conveying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454243A (en) * | 2019-09-05 | 2019-11-15 | 湖南天雁机械有限责任公司 | Lay Lip river triangle bearing-type power transmission structure for turbocharger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4226862A1 (en) * | 1992-08-13 | 1994-02-17 | Siemens Ag | Medical appts. adjustment mechanism - supports carriage on spindle via eccentrically-mounted roller bearings for adjusting play in spindle direction |
| WO1997002441A1 (en) * | 1995-07-05 | 1997-01-23 | Norco, Inc. | Mechanical drive assembly |
| CN1696536A (en) * | 2005-05-22 | 2005-11-16 | 缪冬生 | Rolling type accurate nut-screw pair |
| WO2007066965A1 (en) * | 2005-12-07 | 2007-06-14 | Winner Bearings Co., Ltd. | Bearing screw feed device |
-
2008
- 2008-08-29 CN CN 200810214688 patent/CN101660594B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4226862A1 (en) * | 1992-08-13 | 1994-02-17 | Siemens Ag | Medical appts. adjustment mechanism - supports carriage on spindle via eccentrically-mounted roller bearings for adjusting play in spindle direction |
| WO1997002441A1 (en) * | 1995-07-05 | 1997-01-23 | Norco, Inc. | Mechanical drive assembly |
| CN1696536A (en) * | 2005-05-22 | 2005-11-16 | 缪冬生 | Rolling type accurate nut-screw pair |
| WO2007066965A1 (en) * | 2005-12-07 | 2007-06-14 | Winner Bearings Co., Ltd. | Bearing screw feed device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454243A (en) * | 2019-09-05 | 2019-11-15 | 湖南天雁机械有限责任公司 | Lay Lip river triangle bearing-type power transmission structure for turbocharger |
| CN110454243B (en) * | 2019-09-05 | 2024-05-17 | 湖南天雁机械有限责任公司 | Lailo triangle bearing type power transmission structure for turbocharger |
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|---|---|
| CN101660594B (en) | 2013-10-16 |
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