CN102597551A - Contact-exposing-type screw conveying apparatus using a bearing - Google Patents
Contact-exposing-type screw conveying apparatus using a bearing Download PDFInfo
- Publication number
- CN102597551A CN102597551A CN2010800503871A CN201080050387A CN102597551A CN 102597551 A CN102597551 A CN 102597551A CN 2010800503871 A CN2010800503871 A CN 2010800503871A CN 201080050387 A CN201080050387 A CN 201080050387A CN 102597551 A CN102597551 A CN 102597551A
- Authority
- CN
- China
- Prior art keywords
- screw
- rod
- bearing bracket
- type bearing
- screw axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a contact-exposing-type screw conveying apparatus using a radial bearing. The screw-conveying apparatus using a bearing comprises: a screw shaft; a nut coupled to the screw shaft via a screw, wherein said nut comprises a plurality of rod-shaped bearing holders, each of which has a rod shape extending in the direction of the screw shaft, and which are spaced apart from each other in a circumferential direction along the outer surface of the screw shaft; a plurality of radial bearings arranged in the lower portion of each of the rod-shaped bearing holders along a helical path formed in accordance with the pitches of male screws of the screw shaft; and spacers for fixing both ends of each of the rod-shaped bearing holders, such that each of the rod-shaped bearing holders can maintain a predetermined distance from the center of the screw shaft and maintain a predetermined distance from each other in the circumferential direction of the screw shaft.
Description
Technical field
The present invention relates to a kind of screw conveyer equipment that uses radial bearing; More particularly; Relate to and a kind ofly use the visible profile shaft of contact of radial bearing to hold screw conveyer equipment, the regular position rotation of said radial bearing in the internal surface of the nut that is connected with screw axis with the mode that radial bearing is formed internal thread.
Background technique
Multiple screw conveyer equipment is disclosed; In these screw conveyer equipment each is used for the screw axis scyewed joint to nut; Then power plant are connected to any in screw axis and the nut, thereby the nut (and the load that is connected with nut) or the screw axis (and the load that is connected with screw axis) that allow not to be connected with power plant move linearly.
In this case, nut is formed with corresponding to the externally threaded internal thread that is formed on the screw axis place therein, and this internal thread has various structures and shape.Internal thread forms through in the internal surface of nut, cutting the screw thread that engages with the outside thread of screw axis, perhaps installs rotationally along the ball of the outside thread root motion of screw axis through the spiral path in the nut internal surface to form.
Simultaneously, when internal thread formed through in the nut of screw conveyer equipment, cutting screw thread, this screw conveyer equipment was applicable to the low speed transfer operation, but and was not suitable for high speed transfer operation and high frequency transfer operation.This is because a large amount of generations owing to rub of noise and heat.Therefore, the spiral path in the nut ball is installed the ball screw transfer equipment mainly with the screw conveyer equipment that acts on high speed transfer operation and high frequency transfer operation.But the ball screw transfer equipment has complicated structure and is difficult to processing.In addition, in the ball screw transfer equipment,, can be easy to form process errors or gap between the root of ball and screw axis or between the ball shell at ball and nut, and between ball, possibly often bump or rub owing to use wearing and tearing.The gap that between these elements, produces, collision or friction-produced noise, vibration and heat, thereby cause the damage of these elements.As a result, the ball screw transfer equipment has very short working life.Therefore, owing to be used for high speed transfer operation and the required linear motion machine (for example automatic machinery) of high frequency transfer operation, the ball screw transfer equipment is changed continually.
Replace the ball screw transfer equipment free ball be, a kind of radial bearing screw conveyer of cicada equipment, wherein, the radial bearing that its rotatingshaft is fixed in the cylindrical shape nut body is set up and is fixed on the spiral path.Radial bearing screw conveyer equipment comprises: a kind of structure; In this structure; The rotatingshaft of radial bearing protrudes from the spiral path of the inwall of cylindrical shape nut main body; The inner loop of radial bearing is inserted in the rotatingshaft and is installed to rotatingshaft, and the end surface of the external rings of radial bearing is along the externally threaded upper surface of screw axis and rolling motion; Also comprise a kind of structure, in this structure, the external peripheral surface of the external rings of radial bearing (side surface) is along the externally threaded sidewall of screw axis and rolling motion; Perhaps a kind of structure in this structure, forms through hole at cylindrical shape nut main body place, and radial bearing is installed to said through hole, and the external rings of radial bearing is along the externally threaded sidewall of screw axis or top edge and rolling motion.
Have very big advantage though use the screw conveyer equipment of radial bearing to compare with the ball screw transfer equipment, this need improve owing to underlying cause.
At first, traditional known radial bearing screw conveyer equipment has lower handling property and productivity.This is because cylindrical-shaped main body is installed on the spiral path as nut main body and the radial bearing that contacts with screw axis at the internal surface place of main body.When bearing shaft when the internal surface of cylindrical-shaped main body protrusion and radial bearing are installed to projection, this processing is practically impossible.Moreover this processing needs sizable processing cost, thereby does not have practical application.Internal surface place and the radial bearing that is formed on cylindrical-shaped main body when the through hole that is used to form spiral path is when being installed to the bracket supports in these holes, and these holes that respective holder is installed should be formed in the cylindrical-shaped main body place and pass along accurate spiral path.Therefore, the problem of existence is: be very difficult to process cylindrical-shaped main body, must prepare independent support according to each radial bearing that will install, and increase the generation of the quantity and the error of parts.
But, the most important thing is that traditional known radial bearing screw conveyer equipment has very big problem: with the naked eye unlikely discern the contact condition between radial bearing and the screw axis.When the parts place that before assembling, handles produces process errors and because parts wear and tear in use or change when producing play, screw conveyer equipment can not move smoothly, and perhaps friction noise is vibrated in generation.Therefore, need adjust the preload between radial bearing and the screw axis after a while, so that compensating error and elimination play.Moreover, in order accurately to adjust preload, must discern the radial bearing at any point place and the generation of process errors between the screw axis or play.But traditional known radial bearing screw conveyer equipment uses cylindrical-shaped main body.Therefore,, then can not discern the contact condition between radial bearing and the screw axis, perhaps be difficult to discern this contact condition from the outside in case assemble.
The part of traditional known radial bearing screw conveyer equipment has the preload regulating device.But disclosed all preload regulating devices refer to the preload regulating device on the central direction of screw axis in legacy equipment.When the preload of the enterprising conduct of the central direction of screw axis between bearing and screw axis is adjusted, radial bearing is changed respectively with respect to the orbiting radius at the center of screw axis, thereby causes new friction and noise.That is to say, when carrying out preload on the central direction at screw axis, the preload of radial bearing adjustment has been influenced the preload to another radial bearing.Therefore, for the suitable preload that keeps between whole radial bearings and the screw axis, be difficult to adjustment equally.
Summary of the invention
Technical problem
Therefore, proposed the present invention, and an object of the present invention is to provide a kind of visible profile shaft that contacts that can improve working ability and assembling and have the hardness of enhancing and hold screw conveyer equipment to the problems referred to above.
Another object of the present invention provides a kind ofly can be in the contact condition of with the naked eye discerning between radial bearing and the screw axis holds screw conveyer equipment must the some place accurately adjusting the visible profile shaft of contacting of preload.
A further object of the present invention provides a kind of visible profile shaft of contact that can on the longitudinal direction of screw axis, adjust preload and holds screw conveyer equipment.
Technological scheme
According to an aspect of the present invention; Can realize above-mentioned and other purposes through providing the visible profile shaft of a kind of contact to hold screw conveyer equipment; The visible profile shaft of this contact hold screw rod biography equipment comprise screw axis and with the nut of screw axis scyewed joint; Wherein this nut comprises: a plurality of rod-type bearing bracket; These a plurality of rod-type bearing bracket are arranged in the outer circumferential sides place of screw axis, so that along the circumferential direction be spaced apart from each other with intended distance, each rod-type bearing bracket has the rod shape of on the longitudinal direction of screw axis, extending; A plurality of radial bearings, these a plurality of radial bearings are installed along the spiral path of the outside thread pitch that is suitable for screw axis at part place, the bottom of each rod-type bearing bracket; And spacer, this spacer is used for fixing the opposed end of each rod-type bearing bracket, so that the rod-type bearing bracket is opened with the Center Gap of intended distance and screw axis and along the circumferential direction remained on the screw axis place with spaced apart distance.
According to a further aspect in the invention; Each rod-type bearing bracket can be formed with internal thread at the longitudinal part section place of its opposite side; Each spacer can be formed with the support mounting hole, and the end of rod-type bearing bracket can be inserted in the support mounting hole, and the support mounting hole of spacer can be formed with tapped hole in its outside; The end of rod-type bearing bracket can insert in the support mounting hole of spacer, so that the support set screw carries out fastening from tapped hole respectively.
According to one side more of the present invention; Each spacer can be formed with the support mounting hole; The end of each rod-type bearing support can be inserted in the support mounting hole, and the support mounting hole runs through spacer, the support mounting hole can be respectively within it the office, lateral part of wall be formed with the screw mouth (taps) of predetermined depth; The screw mouth of support mounting hole can carry out screw threads for fastening with preload adjustment screw respectively, so that the rod-type bearing bracket is shifted on the longitudinal direction of screw axis.
Beneficial effect
According to the present invention with above-mentioned structure, technique effect is following.
At first, needn't form bearing shaft, perhaps needn't form the bearing bracket mounting hole at cylindrical shape nut main body place at the internal surface place of cylindrical shape nut.Moreover because a plurality of Bearing Installation to rod-type bearing bracket is only assembled through spacer then, the processibility of radial bearing screw transporter can be significantly improved with assembling.
Because bearing bracket and nut main body is integrally formed, can reduce the number of components of bearing screw conveyer equipment, can make bearing screw conveyer equipment compactly, and the hardness that can improve nut.
When production part process errors or play, can when making the contact condition of with the naked eye discerning between radial bearing and the screw axis, only accurately adjust preload along the central direction or the longitudinal direction of screw axis subsequently at essential some place.
Because spacer can be modified being suitable for mounted equipment and having the function of attachment plate, bearing screw conveyer equipment do not need under the situation of attachment plate independently compatible mutually with said equipment.
If necessary, when using cup spring, each rod-type bearing bracket is flexibly pushed along the central direction of screw axis by cup spring, can automatically regulate the bias state of rod-type bearing bracket with respect to the screw axis center.
Because support set screw or preload adjustment screw are arranged as the longitudinal direction that is parallel to screw axis serially; And the preload of the radial bearing of arranging with the predetermined party parallactic angle can be through support set screw or preload adjustment screw suitable rotation and on the longitudinal direction of screw axis, adjust; Preload adjustment screw can be consistent with respect to the orbiting radius at screw axis center, and after the preload adjustment, does not also change.Therefore, at place, azimythal angle the preload adjustment of bearing is not radially influenced at the opposing party's parallactic angle place the radially preload adjustment of bearing.Thereby, maybe be fast and easily carry out the preload of whole radial bearings with respect to screw axis, and the friction or the connection of generation after the preload adjustment are minimized.
According to the present invention; When production part process errors or play; Subsequently can be in the contact condition of with the naked eye discerning between radial bearing and the screw axis, only through selecting necessary point critically to adjust preload along the central direction or the longitudinal direction of screw axis.
Description of drawings
To be expressly understood above-mentioned and other purposes, characteristic and other advantages of the present invention more according to the following detailed description that combines appended accompanying drawing to carry out, in the accompanying drawing:
Fig. 1 illustrates the exploded perspective view that holds screw conveyer equipment according to the visible profile shaft of the contact of the first embodiment of the present invention;
Fig. 2 is the stereogram that illustrates after the assembling of rod-type bearing bracket being used for the first embodiment of the present invention and radial bearing;
Fig. 3 illustrates the rod-type bearing bracket shown in Fig. 2 and the exploded perspective view of radial bearing;
Fig. 4 illustrates according to the visible profile shaft of the contact of the first embodiment of the present invention to hold the stereogram after the assembling of screw conveyer equipment;
Fig. 5 illustrates the front cross sectional view that holds screw conveyer equipment according to the visible profile shaft of the contact of the first embodiment of the present invention;
Fig. 6 illustrates contact according to a second embodiment of the present invention it is thus clear that profile shaft holds the exploded perspective view of screw conveyer equipment;
Fig. 7 is the stereogram that illustrates after the assembling that the visible profile shaft of the contact shown in Fig. 6 holds screw conveyer equipment;
Fig. 8 illustrates the contact of a third embodiment in accordance with the invention it is thus clear that profile shaft holds the exploded perspective view of screw conveyer equipment;
Fig. 9 is the stereogram after the visible profile shaft of the contact shown in Fig. 8 holds the assembling of screw conveyer equipment;
Figure 10 illustrates the contact of a fourth embodiment in accordance with the invention it is thus clear that profile shaft holds the exploded perspective view of screw conveyer equipment; And
Figure 11 is the stereogram that illustrates after the assembling that the visible profile shaft of the contact shown in Figure 10 holds screw conveyer equipment.
Reference character in the accompanying drawing
1: screw axis 3: outside thread
5,5a, 5ax, 5b: rod-type bearing bracket 7: main body
9: bearing mounting hole 10: bearing support
11: arm 12: internal thread
13: neck 14: tabular surface
15: groove 17: radial bearing
19: external rings 21: rotatingshaft
23a, 23b, 23c: spacer 25: screw rod axis hole
27a, 27b, 27c: support mounting hole 29a, 29b: screw mouth
31a, 31b: support set screw 33: cup spring
35: tapped hole 37: drive-type fluting set screw
39: preload adjustment screw 41: screw headstock
43: tapped hole
Embodiment
Hereinafter, will describe exemplary embodiment of the present invention with reference to appended accompanying drawing in detail.
[first embodiment]
At first, with reference to Fig. 5, can see that from Fig. 5 the visible profile shaft of contact of the present invention holds screw conveyer equipment, it comprises: screw axis 1, and this screw axis is formed with outside thread 3 at its external peripheral surface place; And rod-type bearing bracket nut, wherein, a plurality of radial bearings 17 are installed on the spiral path corresponding to outside thread 3 in how right forming each other.Characteristic of the present invention is used to provide a kind of rod-type bearing bracket nut.
With reference to Fig. 1 or 4; Holding screw conveyer equipment according to the visible profile shaft of the contact of the first embodiment of the present invention comprises: screw axis; This screw axis is formed with outside thread 3 at its external peripheral surface place; And a plurality of rod-type bearing bracket 5, these a plurality of rod-type bearing bracket with intended distance at the outer circumferential sides place of screw axis 1 along circumferential directions, the opposed end of each rod-type bearing bracket 5 is fixed through spacer 23a simultaneously.The part place is equipped with radial bearing 17 to each rod-type bearing bracket in its underpart.The visible profile shaft of contact of the present invention holds screw conveyer equipment and comprises nut, and this nut is made up of rod-type bearing bracket 5, the radial bearing 17 and the spacer 23a that connects with the opposed end of rod-type bearing bracket 5 that are formed on the part place, bottom of each rod-type bearing bracket 5.Screw axis 1 is connected with rotational power plant (such as motor), and spacer 23a is connected with load.According to the occasion needs, screw axis 1 can be connected with load, and spacer 23a can be connected with rotational power plant.
Hold of screw conveyer equipment according to the visible profile shaft of contact of the present invention and be characterised in that bearing bracket and nut main body are integrally formed.Of the present invention another is characterised in that bearing bracket forms the shape of rod or bar, and arranges with intended distance round screw axis 1, and be simultaneously parallel with the longitudinal direction of screw axis 1, thereby each bearing bracket is around screw axis 1 orbiting.
As shown in fig. 1, each in the rod-type bearing bracket 5 has the upwardly extending rod shape in the side of screw axis 1.Be provided with between two rod-type bearings 5 at least, especially, preferably provide even number rod-type bearing bracket 5 how right to form each other.Rod-type bearing bracket 5 along the circumferential direction is arranged in the outside of screw axis 1 with intended distance.
The opposed end of fixing each the rod-type bearing bracket 5 of spacer 23a so that rod-type bearing bracket 5 opens with the Center Gap of intended distance and screw axis, and along the circumferential direction remains on screw axis 1 place with spaced apart distance.
In this case, each radial bearing 17 is mounted in the surface of its external rings 19 with the screw thread top edge or the thread flank surfaces of screw axis 1 outside thread 3 and contacts.For this reason; The bottom part of each rod-type bearing bracket 5 is formed with the bearing support 10 of inclination; And bearing support 10 respectively therein heart place be formed with bearing mounting hole 9, said bearing mounting hole is perpendicular to bearing support 10, and upwards through bearing support (shown in Fig. 2 and 3).Especially; The part that each bearing support 10 can be formed the feasible radial bearing 17 that is associated is recessed into obliquely; And other not recessed parts of radial bearing 17 are projected into the outside of bearing support 10, contact with the outside thread 3 of screw axis 1 with the external rings 19 of the projection that allows radial bearing 17.In this case, bearing support 10 has the angle of inclination that the structure according to the outside thread 3 of screw axis 1 changes.But under any situation, the size of bearing support 10 allows the external rings of radial bearing 17 to contact with the screw thread top edge or the side surface of screw axis 1 outside thread 3.Although not shown, preferably, bearing mounting hole 9 is formed with screw mouth respectively, and the part that rotatingshaft 21 inserts in the bearing mounting holes 9 is formed with the screw thread that connects with screw mouth respectively, thereby respectively rotatingshaft 21 is threaded onto bearing mounting hole 9.
Therefore, the radial bearing formula female thread of nut becomes with the outside thread 3 of screw axis 1 and engages.
Screw conveyer equipment must be carried out two-way transfer operation.For this reason; Rod-type bearing bracket 5 is mounted under the state that direction respect to one another tilts towards the radial bearing of installing each other 17 at rod-type bearing bracket 5 places and contacts, so that can pass through two-way rotation and the bidirectional-movement (as shown in Figure 5) of screw axis 1 or spacer 23a with the outside thread 3 of screw axis 1.According to this structure; Sense of rotation regardless of screw axis that is connected with rotational power plant 1 or spacer 23a; Radial bearing 17 contacts with the screw thread top edge or the side surface of the outside thread 3 of screw axis 1 in the regular position of rod-type bearing bracket 5 under the situation that does not have displacement, so that only be rotated.
According to bearing screw conveyer equipment of the present invention; The processibility of radial bearing screw conveyer equipment can improve through this simple structure with assembling significantly; The number of components of bearing screw conveyer equipment can reduce to half perhaps still less owing to the integrally formed of bearing bracket and nut main body; Bearing screw conveyer equipment can be made compactly, and the hardness of nut can be enhanced.Moreover owing between rod-type bearing bracket 5, predetermined gap is arranged, the surface and the contact condition between the radial bearing 17 of screw axis 1 outside thread 3 can with the naked eye be discerned from the outside through this gap.
The another feature of holding screw conveyer equipment according to the visible profile shaft of contact of the present invention is to adjust the height of rod-type bearing bracket 5 in spacer 23a, thereby allows the position with respect to screw axis 1 center adjustment radial bearing 17.For this reason, the opposed end of each rod-type bearing bracket 5 is formed with arm 11, and said arm is thinner than the main body of rod-type bearing bracket 5, and said arm 11 is formed with the groove 15 of non-perforation respectively in its outside, and said groove is towards the central direction guiding of screw axis 1.Moreover each separator 23a side surface place within it is formed with support mounting hole 27 along the longitudinal direction of rod-type bearing bracket 5, so that the arm 11 of rod-type bearing bracket 5 inserts in the support mounting hole 27 respectively and is installed to support mounting hole 27.The support mounting hole 27 of spacer 23a is formed with screw mouth 29a in its outside; Said screw mouth passes towards the central direction of screw axis 1, so that support set screw 31 inserts in the associated recesses 15 of screw mouth 29a and arm 11 in its tail end respectively and is fastened to the associated recesses 15 of screw mouth 29a and arm 11.Be assembled at screw conveyer equipment and make under radial bearing 17 and the screw axis 1 suitable state of contact; When support set screw 31a is further tightened; Be installed to rod-type bearing bracket 5 motion a little on the central direction of screw axis 1 of associated supports mounting hole 27a, so that radial bearing 17 closely contacts with the surface of screw axis 1 outside thread 3.On the other hand, when support set screw 31a was discharged a little, the rod-type bearing bracket 5 that is installed to associated supports mounting hole 27a moved a little and leaves the center of screw axis 1, so that radial bearing 17 not too closely contacts with the surface of screw axis 1 outside thread 3.
Under the situation of suitably preload and after outside thread 3, rod-type bearing bracket 5, spacer 23a and the radial bearing 17 of assembling screw axis 1; Because their machining accuracy variation; When radial bearing 17 does not contact with the outside thread 3 of screw axis 1, maybe be through the use position controlling device with this preload of post-compensation.Moreover; When owing to the collision between the parts of screw conveyer equipment, friction, vibration, when heating produces play, this play can compensate through gap and the preload that the use position regulating device is adjusted between the outside thread of radial bearing 17 and screw axis 1.
Although accompanying drawing has schematically shown each spacer 23a and formed cylinder form, the external structure of spacer 23a is not limited thereto.For example, spacer 23a can make amendment by different shape, to be suitable for wherein being equipped with the equipment of transfer equipment of the present invention.If so, can directly be attached to each equipment according to transfer equipment of the present invention, and not need attached independently attachment plate.
Of the present invention another is characterised in that: when rod-type bearing bracket 5 temporarily from the center-biased of screw axis 1 and under bias state during orbiting; Rod-type bearing bracket 5 is regulated automatically, so that the center line of the center line of screw axis 1 and Orbiting rod-type bearing bracket 5 is consistent.For this reason; Shown in Fig. 1 or 5; The present invention has a kind of structure, and wherein the arm 11 of each rod-type bearing bracket 5 is formed with neck 13, and this neck has the diameter littler than other parts of arm 11 on the inward direction of groove 15; And neck 13 is provided with cup spring 33, and this cup spring can hold the arm 11 of all rod-type bearing bracket 5 and on the central direction of screw axis 1, elastic force is provided.In the cup spring 33 each is inserted in the outside of rod-type bearing bracket 5 and is installed to the outside of rod-type bearing bracket 5, and the size of its inner diameter can allow radial bearing 17 under normal state, suitably contacting with screw axis 1 under the preload.According to this structure, even when the temporary transient biasing of a part of rod-type bearing bracket 5, rod-type bearing bracket 5 also can be by automatic adjusting.
[second embodiment]
Second to the 4th embodiment of the present invention is characterised in that: make rod-type bearing bracket 5a and the 5b longitudinal direction superior displacement at screw axis 1, so that between the outside thread 3 of with the naked eye in the contact condition between the surface of outside identification outside thread 3 and the radial bearing 17, adjusting screw axis 1 and radial bearing 17, contact preload.
The visible profile shaft that contacts that Fig. 6 and 7 illustrates according to a second embodiment of the present invention holds screw conveyer equipment.The visible profile shaft of contact according to a second embodiment of the present invention holds screw conveyer equipment and also comprises screw axis 1 and rod-type bearing bracket nut, and this screw axis is formed with outside thread at its external peripheral surface place, and this rod-type bearing bracket nut thread is connected to screw axis 1.Rod-type bearing bracket nut comprises the radial bearing 17 by rod-type bearing bracket 5a and 5b supporting.At least two rod-type bearing bracket 5a and 5b are set, even number rod-type bearing bracket 5a and 5b preferably are set, how right to form each other, and on relative direction, arrange round screw axis 1.Rod-type bearing bracket 5a and 5b have the longitudinal direction corresponding to the longitudinal direction of screw axis 1, and arrange round screw axis 1, when arranging with the predetermined party parallactic angle, to carry out around orbital motion around screw axis 1.Thereby, be arranged on the center maintenance identical azimythal angle of the radial bearing 17 at identical rod-type bearing bracket 5a and 5b place with respect to screw axis 1.Moreover the distance that is arranged between the radial bearing 17 at identical rod-type bearing bracket 5a and 5b place is adjusted, so that each radial bearing 17 is arranged on the spiral path corresponding to the outside thread 3 of screw axis 1.Rod-type bearing bracket 5a and 5b with intended distance at the outer circumferential sides place of screw axis 1 along circumferential directions, and the opposed end of each rod-type bearing bracket 5a or 5b is fixed by spacer 23d.
That is to say; As shown in Figure 6; Screw conveyer equipment according to a second embodiment of the present invention also comprises: a plurality of rod- type bearing bracket 5a and 5b; The outer circumferential sides that these a plurality of rod-type bearing bracket are arranged in screw axis 1 is sentenced just and along the circumferential direction is spaced apart from each other with intended distance, and it has the rod shape of on the longitudinal direction of screw axis 1, extending simultaneously; A plurality of radial bearings 17, these a plurality of radial bearings are at the part place, bottom of each rod- type bearing bracket 5a or 5b, install along the spiral path of the pitch that is suitable for screw axis 1 outside thread 3; And spacer 23d; Said spacer is used for fixing the opposed end of rod- type bearing bracket 5a or 5b; So that rod- type bearing bracket 5a and 5b open with the Center Gap of intended distance and screw axis 1, and along the circumferential direction remain on screw axis 1 place with spaced apart distance.
As shown in Figure 7, each radial bearing 17 must be mounted in the surface of its external rings 19 with the screw thread top edge or the thread flank surfaces of the outside thread 3 of screw axis 1 and contact.For this reason; The bottom part of each rod-type bearing bracket 5a or 5b is formed with the tabular surface 14 that forms through cutting; And the bearing support 10 that is formed with inclination at the mounting points place of corresponding radial bearing 17; Bearing support 10 respectively therein heart place be formed with bearing mounting hole 9, said bearing mounting hole is perpendicular to bearing support 10 and upwards through this bearing support 10 (as shown in Figure 7).Especially; The part that each bearing support 10 can be formed the feasible radial bearing 17 that is associated is recessed into obliquely; And other not recessed parts of radial bearing 17 protrude into the outside of bearing support 10, so that allow the external rings 19 of the projection of radial bearing 17 to contact with the outside thread 3 of screw axis 1.In this case, bearing support 10 has the angle of inclination that the structure according to the outside thread 3 of screw axis 1 changes.But under any situation, the size of bearing support 10 allows the external rings of radial bearing 17 and the screw thread top edge or the flanked of screw axis 1 outside thread 3 to touch.Although not shown, preferably, bearing mounting hole 9 is formed with screw mouth respectively, and in the part that running shaft 21 inserts in the bearing mounting hole 9, is formed with the screw thread that connects with screw mouth respectively, thereby respectively running shaft 21 is threaded onto bearing mounting hole 9.
Moreover as shown in Figure 6, screw conveyer equipment must be carried out the two-way relative movement between screw axis 1 and the nut.For this reason, radial bearing 17 is mounted obliquely within rod-type bearing bracket 5a and 5b place, and around the median plane of screw axis 1 to arranging each other.That is to say that to be installed to the installation direction of rod-type bearing bracket 5b opposite with radial bearing 17 respectively for the installation direction that radial bearing 17 is installed to rod-type bearing bracket 5a.Therefore, the radial bearing 17 that is installed to rod-type bearing bracket 5a only uses when the relative right-hand side with respect to screw axis 1 moves at nut.In this case, the radial bearing 17 that is installed to rod-type bearing bracket 5a rotates when contacting with the left wall of the outside thread 3 of screw axis 1 or left edge.On the other hand, the radial bearing 17 that is installed to rod-type bearing bracket 5b only uses when the relative left-hand side with respect to screw axis 1 moves at nut.In this case, the radial bearing 17 that is installed to rod-type bearing bracket 5b rotates when contacting with the right wall of the outside thread 3 of screw axis 1 or upper right edge.Through this structure, can successfully realize the two-way relative movement between screw axis 1 and the nut.
As shown in Figure 7, owing between rod-type bearing bracket 5a in the second embodiment of the present invention and the 5b predetermined gap is arranged, can discern outside thread 3 surfaces of screw axis 1 and the contact condition between the radial bearing 17 through this gap.
In the second embodiment of the present invention; In order to make rod- type bearing bracket 5a and 5b longitudinal direction superior displacement at screw axis 1; So that contact preload in the contact condition between the surface of with the naked eye discerning outside thread 3 from the outside and the radial bearing 17 between adjustment screw axis 1 outside thread 3 and the radial bearing 17; Shown in Fig. 6 and 7; Each rod- type bearing bracket 5a or 5b are formed with internal thread 12 at the longitudinal part section place of its opposite side, and each spacer 23d is formed with support mounting hole 27c, and the end of rod- type bearing bracket 5a or 5b can insert in these support mounting holes.The support mounting hole 27c of spacer 23d is formed with tapped hole 43 at its outer side surface place; The end of rod- type bearing bracket 5a or 5b inserts among the support mounting hole 27c of spacer 23d, so that support set screw 31b is fastened to the internal thread 12 of rod- type bearing bracket 5a or 5b respectively from tapped hole 43.In this case, the preload on the longitudinal direction of screw axis 1 can be adjusted through tightening at the opposite sides of rod- type bearing bracket 5a and 5b or discharging support set screw 31b.
The internal thread 12 of rod- type bearing support 5a and 5b forms with respect to the center of rod- type bearing bracket 5a and 5b setovers a little, and the tapped hole 43 of spacer 23d also forms respectively with respect to the center of support mounting hole 27c and setovers a little.According to this structure, possibly during using screw conveyer equipment, prevent own rotation in the support mounting hole 27c that each rod- type bearing bracket 5a or 5b be associated.
[the 3rd embodiment]
Fig. 8 and 9 illustrates the visible profile shaft of contacting of a kind of a third embodiment in accordance with the invention and holds screw conveyer equipment.Shown in Fig. 8 and 9; In the third embodiment of the present invention; The end of rod-type bearing bracket 5a and 5b can be inserted among the support mounting hole 27b; This support mounting hole 27b is formed on spacer 23b place, so that pass this spacer, the support mounting hole 27b part place in the wall outside within it is formed with screw mouth 29b with predetermined depth respectively; Preload adjustment screw 39 is threadably fastened to the screw mouth 29b of support mounting hole 27b, so that on the longitudinal direction of screw axis 1, promote rod-type bearing bracket 5a and 5b respectively.Rod-type bearing bracket 5a that has and installed and 5b quantity identical distance device 39 support mounting hole 27b form with intended distance relative to each other spaced apart.The little diameter of inner diameter of support mounting hole 27b that each rod-type bearing bracket 5a or 5b have than are associated in its tail end and screw mouth 29b, and assembled to allow its terminal part under assembled state, to advance in the screw mouth 29b of support mounting hole.Drive-type fluting set screw 37 can be used as preload adjustment screw 39.Under the situation of fastening this preload adjustment screw 39, the lateral parts of rod-type bearing bracket 5a and 5b contacts with the inner surface of preload adjustment screw 39 respectively.Assembled at bearing screw conveyer equipment so that under radial bearing 17 and the screw axis 1 suitable state of contact; When preload adjustment screw 39 is tightened when inwardly advancing; Be installed to rod-type bearing bracket 5a and the 5b motion a little on the longitudinal direction of screw axis 1 of the support mounting hole 27b that is associated, so that radial bearing 17 closely contacts with outside thread 3 surfaces of screw axis 1.On the other hand; When preload adjustment screw 39 is discharged a little; The rod-type bearing bracket 5a and the 5b that are installed to the support mounting hole 27b that is associated move a little and leave the center of screw axis 1, so that radial bearing 17 not too closely contacts with outside thread 3 surfaces of screw axis 1.
After outside thread 3, rod- type bearing bracket 5a and 5b, spacer 23b and the radial bearing 17 of assembling screw axis 1; Because their machining accuracy variation; When radial bearing 17 does not contact with the outside thread 3 of screw axis 1 under suitable preload, maybe be through using preload adjustment screw 39 with this preload of post-compensation.Moreover; When owing to the collision between the parts of screw conveyer equipment, friction, vibration, when heating produces play, this play can compensate through gap and the preload of using preload adjustment screw 39 to adjust between the outside thread of radial bearing 17 and screw axis 1.
Because preload adjustment screw 39 can be arranged to parallel with the longitudinal direction of screw axis 1 continuously; And the preload of the radial bearing of arranging with identical azimythal angle 17 can through rotate preload adjustment screw 39 and on the longitudinal direction of screw axis 1 by adjustment simultaneously; Preload adjustment screw 39 can be consistent with respect to the orbiting radius at screw axis center, after the preload adjustment, does not also change.Therefore, at place, azimythal angle the preload adjustment of bearing is not radially influenced at the opposing party's parallactic angle place the radially preload adjustment of bearing.Therefore, maybe be fast and easily carry out the preload of whole radial bearings with respect to screw axis, and the friction or the connection of generation after the preload adjustment are minimized.
[the 4th embodiment]
Figure 10 and 11 illustrates the visible profile shaft of contacting of a fourth embodiment in accordance with the invention and holds screw apparatus.Although the third embodiment of the present invention shown in Fig. 8 and 9 illustrates the end of the opposed end of rod- type bearing bracket 5a and 5b and is provided with preload adjustment screw 39, the invention is not restricted to this.As in the fourth embodiment of the present invention shown in Figure 10 and 11; Only end of each rod- type bearing support 5a or 5b also is provided with preload adjustment screw 39; Perhaps in rod-type bearing bracket 5a, 5ax and 5b; Except the rod-type bearing bracket 5ax that is assembled into spacer 23c, have only remaining rod- type bearing bracket 5a and 5b also to be provided with preload adjustment screw 39.
Under the situation of using preload adjustment screw 39; Although the end of each rod- type bearing bracket 5a or 5b only is fixed to spacer 23c through preload adjustment screw 39; Rod- type bearing bracket 5a or 5b can also following manner further be fixed firmly to spacer 23c: rod-type bearing bracket 5a or b are formed with internal thread 12 at the longitudinal part section place of its opposite side; Preload adjustment screw 39 is formed with tapped hole 35 respectively, and support set screw 31b is fastened to the internal thread 12 of rod- type bearing bracket 5a or 5b through the tapped hole 35 that passes preload adjustment screw 39 respectively then.Setover a little and tapped hole 35 also forms when setovering a little with respect to the center of preload adjustment screw 39 when the internal thread 12 of rod- type bearing bracket 5a and 5b forms with respect to the center of rod- type bearing bracket 5a and 5b, possibly prevent each rod- type bearing bracket 5a or 5b oneself rotation.
Shown in Figure 10 and 11; When the end of rod-type bearing bracket 5a, 5ax and 5b does not use preload adjustment screw 39; Their end can be fixed to spacer 23c in the following manner: spacer side place within it is formed with support mounting hole 27c; The end of rod-type bearing bracket can be inserted into respectively in these support mounting holes; Each support mounting hole 27c passes the half the of the spacer 23c that is associated, and tapped hole 43 forms the biasing with respect to support mounting hole 27c respectively, and support set screw 31b is fastened to the longitudinal part section of rod-type bearing bracket 5a, 5ax and 5b through passing tapped hole 43 respectively then.Screw thread headstock 41 can be formed at tapped hole 43 places of spacer 23c further, at the half support mounting hole 27c place that connect and in the outside of tapped hole 43.In this case, the internal thread that is formed on the longitudinal part section place of rod-type bearing bracket 5a, 5ax and 5b also can form respectively through the tapped hole 43 of spacer 23c with respect to the center-biased of rod-type bearing bracket 5a, 5ax and 5b.When internal thread 12 and tapped hole 43 are formed biasing, can prevent that each rod-type bearing bracket 5a, 5ax or 5b from oneself rotating between the screw conveyer equipment spreadable life according to the present invention.
Each embodiment has been described with the best mode of embodiment of the present invention.Although disclose the preferred embodiments of the present invention for purposes of illustration, one of skill in the art will appreciate that under the situation that does not break away from disclosed scope and spirit in the appending claims, possibly carry out various modifications, interpolation or replacement.
Claims (6)
1. the visible profile shaft of contact holds screw conveyer equipment, and it comprises screw axis and the nut that is threaded with screw axis,
Wherein, Said nut comprises: a plurality of rod-type bearing bracket; Said a plurality of rod-type bearing bracket is arranged in the outer circumferential sides place of screw axis, so that along the circumferential direction be spaced apart from each other with intended distance, each rod-type bearing bracket has the rod shape of on the longitudinal direction of screw axis, extending; A plurality of radial bearings, said a plurality of radial bearings are installed along the spiral path of the outside thread pitch that is suitable for screw axis at the place, bottom of each rod-type bearing bracket; And spacer, said spacer is used for fixing the opposed end of each rod-type bearing bracket, so that the rod-type bearing bracket is opened with the Center Gap of intended distance and screw axis and along the circumferential direction remained on the screw axis place with spaced apart distance.
2. the visible profile shaft of contact according to claim 1 holds screw conveyer equipment; Wherein, The opposed end of each rod-type bearing bracket is formed with arm, and said arm is thinner than the main body of rod-type bearing bracket, and said arm is formed with groove respectively in its outside; Said groove is towards the central direction guiding of screw axis; Each spacer side surface place within it is formed with along the support mounting hole of the longitudinal direction of rod-type bearing bracket, so that the arm of rod-type bearing bracket inserts in the support mounting hole respectively and is installed to the support mounting hole, the support mounting hole of spacer is formed with screw mouth in its outside; Said screw mouth passes towards the central direction of screw axis, so that screw inserts in the groove of screw mouth and arm respectively in its tail end and is fastened to the groove of screw mouth and arm.
3. the visible profile shaft of contact according to claim 2 holds screw conveyer equipment; Wherein, The arm of each rod-type bearing bracket is formed with neck; Said neck has the diameter littler than other parts of arm on the inward direction of groove, said neck inserts in cup spring in its outside and is installed to cup spring, and said cup spring has the inner diameter of the arm that can hold all rod-type bearing bracket of arranging around screw axis respectively.
4. the visible profile shaft of contact according to claim 1 holds screw conveyer equipment; Wherein, Each rod-type bearing bracket is formed with internal thread at the longitudinal part section place of its opposite side; Each spacer is formed with the support mounting hole, and the end of rod-type bearing bracket can insert in the said support mounting hole, and the support mounting hole of spacer is formed with tapped hole in its outside; The end of rod-type bearing bracket is inserted in the support mounting hole of spacer, so that the support set screw carries out fastening from tapped hole respectively.
5. the visible profile shaft of contact according to claim 1 holds screw conveyer equipment; Wherein each spacer is formed with the support mounting hole; The end of each rod-type bearing bracket can insert in the said support mounting hole; Said support mounting hole runs through said spacer; Support mounting hole a plurality of parts place in the wall outside within it is formed with the screw mouth of predetermined depth respectively, and the screw mouth of support mounting hole utilizes preload adjustment screw to carry out screw threads for fastening, so that the rod-type bearing bracket is shifted on the longitudinal direction of screw axis respectively.
6. the visible profile shaft of contact according to claim 5 holds screw conveyer equipment; Wherein, Each rod-type bearing bracket is formed with internal thread at the longitudinal part section place of its opposite side; Preload adjustment screw respectively therein heart place be formed with tapped hole, the support set screw is secured to the internal thread of rod-type bearing bracket respectively through the tapped hole that passes preload adjustment screw.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090092097A KR101083739B1 (en) | 2009-09-29 | 2009-09-29 | Bearing screw conveying device of which contacts are exposed |
| KR10-2009-0092097 | 2009-09-29 | ||
| KR1020090122976A KR101084376B1 (en) | 2009-12-11 | 2009-12-11 | Bearing screw conveying device of which contacts are exposed and adjusted easily |
| KR10-2009-0122976 | 2009-12-11 | ||
| PCT/KR2010/003166 WO2011040690A1 (en) | 2009-09-29 | 2010-05-19 | Contact-exposing-type screw conveying apparatus using a bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102597551A true CN102597551A (en) | 2012-07-18 |
Family
ID=43826473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800503871A Pending CN102597551A (en) | 2009-09-29 | 2010-05-19 | Contact-exposing-type screw conveying apparatus using a bearing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102597551A (en) |
| WO (1) | WO2011040690A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006134A (en) * | 2013-02-25 | 2014-08-27 | 株式会社万都 | Nut screw conveying device |
| CN107002841A (en) * | 2014-12-09 | 2017-08-01 | 斯凯孚公司 | Planetary roller screw mechanism |
| CN109099128A (en) * | 2018-10-17 | 2018-12-28 | 深圳盛世电梯股份有限公司 | A kind of bearing screw driven system |
| CN110691925A (en) * | 2018-03-08 | 2020-01-14 | 株式会社运诺 | Bearing screw rod transfer device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT517943B1 (en) * | 2015-10-15 | 2017-06-15 | Rene Semmelrath | Screw drive with at least one bearing as a planet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1949049A1 (en) * | 1969-09-29 | 1971-04-01 | Gaertner Robert | Spindle drive |
| JP2594535Y2 (en) * | 1991-05-21 | 1999-04-26 | 株式会社協豊製作所 | Lead screw device |
| US20090133523A1 (en) * | 2007-11-26 | 2009-05-28 | Cheun Bok Song | Error-compensating bearing screw conveying device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286663A (en) * | 1985-06-13 | 1986-12-17 | Nippon Denso Co Ltd | Feed screw device |
| JPH05126226A (en) * | 1991-05-07 | 1993-05-21 | Takeuchi Seiko Kk | Rectilinear feeding device |
| JP2940295B2 (en) * | 1992-02-10 | 1999-08-25 | 株式会社デンソー | Lead screw device |
| KR100860720B1 (en) * | 2007-08-13 | 2008-09-29 | 송천복 | Bearing screw type transferring |
-
2010
- 2010-05-19 WO PCT/KR2010/003166 patent/WO2011040690A1/en active Application Filing
- 2010-05-19 CN CN2010800503871A patent/CN102597551A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1949049A1 (en) * | 1969-09-29 | 1971-04-01 | Gaertner Robert | Spindle drive |
| JP2594535Y2 (en) * | 1991-05-21 | 1999-04-26 | 株式会社協豊製作所 | Lead screw device |
| US20090133523A1 (en) * | 2007-11-26 | 2009-05-28 | Cheun Bok Song | Error-compensating bearing screw conveying device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006134A (en) * | 2013-02-25 | 2014-08-27 | 株式会社万都 | Nut screw conveying device |
| CN107002841A (en) * | 2014-12-09 | 2017-08-01 | 斯凯孚公司 | Planetary roller screw mechanism |
| CN107002841B (en) * | 2014-12-09 | 2020-03-06 | 斯凯孚公司 | Planetary roller screw mechanism |
| US10781900B2 (en) | 2014-12-09 | 2020-09-22 | Aktiebolaget Skf | Planetary roller screw mechanism |
| CN110691925A (en) * | 2018-03-08 | 2020-01-14 | 株式会社运诺 | Bearing screw rod transfer device |
| CN110691925B (en) * | 2018-03-08 | 2023-01-17 | 株式会社运诺 | Bearing screw rod transfer device |
| CN109099128A (en) * | 2018-10-17 | 2018-12-28 | 深圳盛世电梯股份有限公司 | A kind of bearing screw driven system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011040690A1 (en) | 2011-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102597551A (en) | Contact-exposing-type screw conveying apparatus using a bearing | |
| KR102405704B1 (en) | Open-type ball nut and ball screw-type transfer device and Cartesian coordinate robot with the ball nut | |
| US20090133523A1 (en) | Error-compensating bearing screw conveying device | |
| CN104117719A (en) | Spiral hole milling device | |
| KR20090094446A (en) | Mechanism for feeding blanks to be threaded into a thread rolling machine | |
| CN102686895A (en) | Radially adjustable shaft bearing assembly | |
| KR101084376B1 (en) | Bearing screw conveying device of which contacts are exposed and adjusted easily | |
| CN102615300A (en) | Elastic boring bar capable of realizing automatic adjustment for radial direction of boring cutter | |
| CN208195690U (en) | A kind of boring cutter | |
| US10502304B2 (en) | Drive transmission device for transmitting rotary drive | |
| KR101083739B1 (en) | Bearing screw conveying device of which contacts are exposed | |
| CN208261997U (en) | A kind of longitudinal fine tuning differential attachment of gear grinding machines feed mechanism | |
| KR101039623B1 (en) | Bearing screw conveying device of which contacts adapter | |
| KR20130104955A (en) | Bearing screw transferrer with adjustable function of concentricity | |
| CN106558848A (en) | The stopping means of universal circuit breaker drawer seat | |
| KR100635479B1 (en) | Apparatus for forming oil groove of sliding bearing and sliding bearing be formed with the apparatus | |
| CN209026129U (en) | Adjustable lead-screw drive mechanism | |
| CN207750377U (en) | A kind of precision it is adjustable and repair can anti-vibration linear bearing | |
| CN102615301A (en) | Elastic boring bar | |
| KR102159435B1 (en) | A lubricating device for a rolling machine | |
| KR101150340B1 (en) | Bearing screw conveying device of which contacts are exposed | |
| CN102221737B (en) | Fine adjuster for projection photoetching objective | |
| TW202100282A (en) | Inclining and rotating table apparatus | |
| CN202045307U (en) | Spindle locking device for spring forming equipment | |
| KR101715307B1 (en) | Weight adjustment apparatus of the tablet punch press machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |